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authorDaniel Baumann <daniel.baumann@progress-linux.org>2018-11-07 12:22:44 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2018-11-07 12:22:44 +0000
commit1e6c93250172946eeb38e94a92a1fd12c9d3011e (patch)
tree8ca5e16dfc7ad6b3bf2738ca0a48408a950f8f7e /libnetdata
parentUpdate watch file (diff)
downloadnetdata-1e6c93250172946eeb38e94a92a1fd12c9d3011e.tar.xz
netdata-1e6c93250172946eeb38e94a92a1fd12c9d3011e.zip
Merging upstream version 1.11.0+dfsg.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r--libnetdata/Makefile.am28
-rw-r--r--libnetdata/Makefile.in664
-rw-r--r--libnetdata/README.md6
-rw-r--r--libnetdata/adaptive_resortable_list/Makefile.am9
-rw-r--r--libnetdata/adaptive_resortable_list/Makefile.in464
-rw-r--r--libnetdata/adaptive_resortable_list/README.md93
-rw-r--r--libnetdata/adaptive_resortable_list/adaptive_resortable_list.c (renamed from src/adaptive_resortable_list.c)13
-rw-r--r--libnetdata/adaptive_resortable_list/adaptive_resortable_list.h (renamed from src/adaptive_resortable_list.h)45
-rw-r--r--libnetdata/avl/Makefile.am9
-rw-r--r--libnetdata/avl/Makefile.in464
-rw-r--r--libnetdata/avl/README.md11
-rw-r--r--libnetdata/avl/avl.c (renamed from src/avl.c)67
-rw-r--r--libnetdata/avl/avl.h (renamed from src/avl.h)23
-rw-r--r--libnetdata/buffer/Makefile.am9
-rw-r--r--libnetdata/buffer/Makefile.in464
-rw-r--r--libnetdata/buffer/README.md11
-rw-r--r--libnetdata/buffer/buffer.c (renamed from src/web_buffer.c)7
-rw-r--r--libnetdata/buffer/buffer.h (renamed from src/web_buffer.h)4
-rw-r--r--libnetdata/clocks/Makefile.am9
-rw-r--r--libnetdata/clocks/Makefile.in464
-rw-r--r--libnetdata/clocks/README.md0
-rw-r--r--libnetdata/clocks/clocks.c204
-rw-r--r--libnetdata/clocks/clocks.h (renamed from src/clocks.h)15
-rw-r--r--libnetdata/config/Makefile.am9
-rw-r--r--libnetdata/config/Makefile.in464
-rw-r--r--libnetdata/config/README.md46
-rw-r--r--libnetdata/config/appconfig.c (renamed from src/appconfig.c)39
-rw-r--r--libnetdata/config/appconfig.h135
-rw-r--r--libnetdata/dictionary/Makefile.am9
-rw-r--r--libnetdata/dictionary/Makefile.in464
-rw-r--r--libnetdata/dictionary/README.md0
-rw-r--r--libnetdata/dictionary/dictionary.c (renamed from src/dictionary.c)4
-rw-r--r--libnetdata/dictionary/dictionary.h (renamed from src/dictionary.h)6
-rw-r--r--libnetdata/eval/Makefile.am9
-rw-r--r--libnetdata/eval/Makefile.in464
-rw-r--r--libnetdata/eval/README.md0
-rw-r--r--libnetdata/eval/eval.c (renamed from src/eval.c)52
-rw-r--r--libnetdata/eval/eval.h (renamed from src/eval.h)20
-rw-r--r--libnetdata/inlined.h (renamed from src/inlined.h)13
-rw-r--r--libnetdata/libnetdata.c (renamed from src/common.c)696
-rw-r--r--libnetdata/libnetdata.h (renamed from src/common.h)252
-rw-r--r--libnetdata/locks/Makefile.am9
-rw-r--r--libnetdata/locks/Makefile.in464
-rw-r--r--libnetdata/locks/README.md0
-rw-r--r--libnetdata/locks/locks.c (renamed from src/locks.c)15
-rw-r--r--libnetdata/locks/locks.h (renamed from src/locks.h)6
-rw-r--r--libnetdata/log/Makefile.am9
-rw-r--r--libnetdata/log/Makefile.in464
-rw-r--r--libnetdata/log/README.md0
-rw-r--r--libnetdata/log/log.c (renamed from src/log.c)67
-rw-r--r--libnetdata/log/log.h (renamed from src/log.h)15
-rw-r--r--libnetdata/os.c218
-rw-r--r--libnetdata/os.h70
-rw-r--r--libnetdata/popen/Makefile.am9
-rw-r--r--libnetdata/popen/Makefile.in464
-rw-r--r--libnetdata/popen/README.md0
-rw-r--r--libnetdata/popen/popen.c (renamed from src/popen.c)8
-rw-r--r--libnetdata/popen/popen.h (renamed from src/popen.h)7
-rw-r--r--libnetdata/procfile/Makefile.am9
-rw-r--r--libnetdata/procfile/Makefile.in464
-rw-r--r--libnetdata/procfile/README.md61
-rw-r--r--libnetdata/procfile/procfile.c (renamed from src/procfile.c)12
-rw-r--r--libnetdata/procfile/procfile.h (renamed from src/procfile.h)30
-rw-r--r--libnetdata/simple_pattern/Makefile.am9
-rw-r--r--libnetdata/simple_pattern/Makefile.in464
-rw-r--r--libnetdata/simple_pattern/README.md36
-rw-r--r--libnetdata/simple_pattern/simple_pattern.c (renamed from src/simple_pattern.c)4
-rw-r--r--libnetdata/simple_pattern/simple_pattern.h (renamed from src/simple_pattern.h)5
-rw-r--r--libnetdata/socket/Makefile.am9
-rw-r--r--libnetdata/socket/Makefile.in464
-rw-r--r--libnetdata/socket/README.md0
-rw-r--r--libnetdata/socket/socket.c (renamed from src/socket.c)64
-rw-r--r--libnetdata/socket/socket.h (renamed from src/socket.h)9
-rw-r--r--libnetdata/statistical/Makefile.am9
-rw-r--r--libnetdata/statistical/Makefile.in464
-rw-r--r--libnetdata/statistical/README.md0
-rw-r--r--libnetdata/statistical/statistical.c (renamed from src/statistical.c)193
-rw-r--r--libnetdata/statistical/statistical.h (renamed from src/statistical.h)13
-rw-r--r--libnetdata/storage_number/Makefile.am9
-rw-r--r--libnetdata/storage_number/Makefile.in464
-rw-r--r--libnetdata/storage_number/README.md10
-rw-r--r--libnetdata/storage_number/storage_number.c (renamed from src/storage_number.c)4
-rw-r--r--libnetdata/storage_number/storage_number.h (renamed from src/storage_number.h)6
-rw-r--r--libnetdata/threads/Makefile.am9
-rw-r--r--libnetdata/threads/Makefile.in464
-rw-r--r--libnetdata/threads/README.md0
-rw-r--r--libnetdata/threads/threads.c (renamed from src/threads.c)4
-rw-r--r--libnetdata/threads/threads.h (renamed from src/threads.h)6
-rw-r--r--libnetdata/url/Makefile.am9
-rw-r--r--libnetdata/url/Makefile.in464
-rw-r--r--libnetdata/url/README.md0
-rw-r--r--libnetdata/url/url.c (renamed from src/url.c)8
-rw-r--r--libnetdata/url/url.h (renamed from src/url.h)4
93 files changed, 10562 insertions, 808 deletions
diff --git a/libnetdata/Makefile.am b/libnetdata/Makefile.am
new file mode 100644
index 000000000..d2710f0a3
--- /dev/null
+++ b/libnetdata/Makefile.am
@@ -0,0 +1,28 @@
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+ clocks \
+ config \
+ dictionary \
+ eval \
+ locks \
+ log \
+ popen \
+ procfile \
+ simple_pattern \
+ socket \
+ statistical \
+ storage_number \
+ threads \
+ url \
+ $(NULL)
+
+dist_noinst_DATA = \
+ README.md \
+ $(NULL)
diff --git a/libnetdata/Makefile.in b/libnetdata/Makefile.in
new file mode 100644
index 000000000..4ee89a69b
--- /dev/null
+++ b/libnetdata/Makefile.in
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+
+
+
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diff --git a/libnetdata/adaptive_resortable_list/README.md b/libnetdata/adaptive_resortable_list/README.md
new file mode 100644
index 000000000..0ba3ec9b5
--- /dev/null
+++ b/libnetdata/adaptive_resortable_list/README.md
@@ -0,0 +1,93 @@
+
+# Adaptive Re-sortable List (ARL)
+
+This library allows netdata to read a series of `name - value` pairs
+in the **fastest possible way**.
+
+ARLs are used all over netdata, as they are the most
+CPU utilization efficient way to process `/proc` files. They are used to
+process both vertical (csv like) and horizontal (one pair per line) `name - value` pairs.
+
+## How ARL works
+
+It maintains a linked list of all `NAME` (keywords), sorted in the
+order found in the data source. The linked list is kept
+sorted at all times - the data source may change at any time, the
+linked list will adapt at the next iteration.
+
+### Initialization
+
+During initialization (just once), the caller:
+
+- calls `arl_create()` to create the ARL
+
+- calls `arl_expect()` multiple times to register the expected keywords
+
+The library will call the `processor()` function (given to
+`arl_create()`), for each expected keyword found.
+The default `processor()` expects `dst` to be an `unsigned long long *`.
+
+Each `name` keyword may have a different `processor()` (by calling
+`arl_expect_custom()` instead of `arl_expect()`).
+
+### Data collection iterations
+
+For each iteration through the data source, the caller:
+
+- calls `arl_begin()` to initiate a data collection iteration.
+ This is to be called just ONCE every time the source is re-evaluated.
+
+- calls `arl_check()` for each entry read from the file.
+
+### Cleanup
+
+When the caller exits:
+
+- calls `arl_free()` to destroy this and free all memory.
+
+### Performance
+
+ARL maintains a list of `name` keywords found in the data source (even the ones
+that are not useful for data collection).
+
+If the data source maintains the same order on the `name-value` pairs, for each
+each call to `arl_check()` only an `strcmp()` is executed to verify the
+expected order has not changed, a counter is incremented and a pointer is changed.
+So, if the data source has 100 `name-value` pairs, and their order remains constant
+over time, 100 successful `strcmp()` are executed.
+
+In the unlikely event that an iteration sees the data source with a different order,
+for each out-of-order keyword, a full search of the remaining keywords is made. But
+this search uses 32bit hashes, not string comparisons, so it should also be fast.
+
+When all expectations are satisfied (even in the middle of an iteration),
+the call to `arl_check()` will return 1, to signal the caller to stop the loop,
+saving valuable CPU resources for the rest of the data source.
+
+In the following test we used alternative methods to process, **1M times**,
+a data source like `/proc/meminfo`, already tokenized, in memory,
+to extract the same number of expected metrics:
+
+test|code|string comparison|number parsing|duration
+:---:|:---:|:---:|:---:|:---:|
+1|if-else-if-else-if|`strcmp()`|`strtoull()`|4630.337 ms
+2|nested loops|inline `simple_hash()` and `strcmp()`|`strtoull()`|1597.481 ms
+3|nested loops|inline `simple_hash()` and `strcmp()`|`str2ull()`|923.523 ms
+4|if-else-if-else-if|inline `simple_hash()` and `strcmp()`|`strtoull()`| 854.574 ms
+5|if-else-if-else-if|statement expression `simple_hash()` and `strcmp()`|`strtoull()`|912.013 ms
+6|if-continue|inline `simple_hash()` and `strcmp()`|`strtoull()`|842.279 ms
+7|if-else-if-else-if|inline `simple_hash()` and `strcmp()`|`str2ull()`|602.837 ms
+8|ARL|ARL|`strtoull()`|350.360 ms
+9|ARL|ARL|`str2ull()`|157.237 ms
+
+Compared to unoptimized code (test No 1: 4.6sec):
+
+ - before ARL netdata was using test No **7** with hashing and a custom `str2ull()` to achieve 602ms.
+ - the current ARL implementation is test No **9** that needs only 157ms (29 times faster vs unoptimized code, about 4 times faster vs optimized code).
+
+[Check the source code of this test](../../tests/profile/benchmark-value-pairs.c).
+
+## Limitations
+
+Do not use ARL if the a name/keyword may appear more than once in the
+source data.
diff --git a/src/adaptive_resortable_list.c b/libnetdata/adaptive_resortable_list/adaptive_resortable_list.c
index c564efff3..7f4c6c53d 100644
--- a/src/adaptive_resortable_list.c
+++ b/libnetdata/adaptive_resortable_list/adaptive_resortable_list.c
@@ -1,4 +1,6 @@
-#include "adaptive_resortable_list.h"
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "../libnetdata.h"
// the default processor() of the ARL
// can be overwritten at arl_create()
@@ -20,6 +22,15 @@ inline void arl_callback_str2kernel_uint_t(const char *name, uint32_t hash, cons
// fprintf(stderr, "name '%s' with hash %u and value '%s' is %llu\n", name, hash, value, (unsigned long long)*d);
}
+inline void arl_callback_ssize_t(const char *name, uint32_t hash, const char *value, void *dst) {
+ (void)name;
+ (void)hash;
+
+ register ssize_t *d = dst;
+ *d = (ssize_t)str2ll(value, NULL);
+ // fprintf(stderr, "name '%s' with hash %u and value '%s' is %zd\n", name, hash, value, *d);
+}
+
// create a new ARL
ARL_BASE *arl_create(const char *name, void (*processor)(const char *, uint32_t, const char *, void *), size_t rechecks) {
ARL_BASE *base = callocz(1, sizeof(ARL_BASE));
diff --git a/src/adaptive_resortable_list.h b/libnetdata/adaptive_resortable_list/adaptive_resortable_list.h
index d05a8ede7..011ee73d9 100644
--- a/src/adaptive_resortable_list.h
+++ b/libnetdata/adaptive_resortable_list/adaptive_resortable_list.h
@@ -1,43 +1,9 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "../libnetdata.h"
+
#ifndef NETDATA_ADAPTIVE_RESORTABLE_LIST_H
-#define NETDATA_ADAPTIVE_RESORTABLE_LIST_H
-
-/*
- * ADAPTIVE RE-SORTABLE LIST
- * This structure allows netdata to read a file of NAME VALUE lines
- * in the fastest possible way.
- *
- * It maintains a linked list of all NAME (keywords), sorted in the
- * same order as found in the source data file.
- * The linked list is kept sorted at all times - the source file
- * may change at any time, the list will adapt.
- *
- * The caller:
- *
- * 1. calls arl_create() to create a list
- *
- * 2. calls arl_expect() to register the expected keyword
- *
- * Then:
- *
- * 3. calls arl_begin() to initiate a data collection iteration.
- * This is to be called just ONCE every time the source is re-scanned.
- *
- * 4. calls arl_check() for each line read from the file.
- *
- * Finally:
- *
- * 5. calls arl_free() to destroy this and free all memory.
- *
- * The program will call the processor() function, given to
- * arl_create(), for each expected keyword found.
- * The default processor() expects dst to be an unsigned long long *.
- *
- * LIMITATIONS
- * DO NOT USE THIS IF THE A NAME/KEYWORD MAY APPEAR MORE THAN
- * ONCE IN THE SOURCE DATA SET.
- */
-
-#include "common.h"
+#define NETDATA_ADAPTIVE_RESORTABLE_LIST_H 1
#define ARL_ENTRY_FLAG_FOUND 0x01 // the entry has been found in the source data
#define ARL_ENTRY_FLAG_EXPECTED 0x02 // the entry is expected by the program
@@ -116,6 +82,7 @@ extern void arl_begin(ARL_BASE *base);
extern void arl_callback_str2ull(const char *name, uint32_t hash, const char *value, void *dst);
extern void arl_callback_str2kernel_uint_t(const char *name, uint32_t hash, const char *value, void *dst);
+extern void arl_callback_ssize_t(const char *name, uint32_t hash, const char *value, void *dst);
// check a keyword against the ARL
// this is to be called for each keyword read from source data
diff --git a/libnetdata/avl/Makefile.am b/libnetdata/avl/Makefile.am
new file mode 100644
index 000000000..1cb69ed99
--- /dev/null
+++ b/libnetdata/avl/Makefile.am
@@ -0,0 +1,9 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+AUTOMAKE_OPTIONS = subdir-objects
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+
+
+dist_noinst_DATA = \
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diff --git a/libnetdata/avl/Makefile.in b/libnetdata/avl/Makefile.in
new file mode 100644
index 000000000..5982eb85b
--- /dev/null
+++ b/libnetdata/avl/Makefile.in
@@ -0,0 +1,464 @@
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+# Copyright (C) 1994-2013 Free Software Foundation, Inc.
+
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+# with or without modifications, as long as this notice is preserved.
+
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+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
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+dist_noinst_DATA = \
+ README.md \
+ $(NULL)
+
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+
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+ && { if test -f $@; then exit 0; else break; fi; }; \
+ exit 1;; \
+ esac; \
+ done; \
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+ $(am__cd) $(top_srcdir) && \
+ $(AUTOMAKE) --gnu libnetdata/avl/Makefile
+.PRECIOUS: Makefile
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+ @case '$?' in \
+ *config.status*) \
+ cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh;; \
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+ || cp -p $$d/$$file "$(distdir)/$$file" \
+ || exit 1; \
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+ install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
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+ fi
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+
+clean-generic:
+
+distclean-generic:
+ -test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
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+
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+ @echo "This command is intended for maintainers to use"
+ @echo "it deletes files that may require special tools to rebuild."
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+ -rm -f Makefile
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+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
diff --git a/libnetdata/avl/README.md b/libnetdata/avl/README.md
new file mode 100644
index 000000000..48212a715
--- /dev/null
+++ b/libnetdata/avl/README.md
@@ -0,0 +1,11 @@
+# AVL
+
+AVL is a library indexing objects in B-Trees.
+
+`avl_insert()`, `avl_remove()` and `avl_search()` are adaptations
+of the AVL algorithm found in `libavl` v2.0.3, so that they do not
+use any memory allocations and their memory footprint is optimized
+(by eliminating non-necessary data members).
+
+In addition to the above, this version of AVL, provides versions using locks
+and traversal functions. \ No newline at end of file
diff --git a/src/avl.c b/libnetdata/avl/avl.c
index a2c6911e7..c44bef307 100644
--- a/src/avl.c
+++ b/libnetdata/avl/avl.c
@@ -1,4 +1,6 @@
-#include "common.h"
+// SPDX-License-Identifier: LGPL-3.0-or-later
+
+#include "../libnetdata.h"
/* ------------------------------------------------------------------------- */
/*
@@ -10,7 +12,6 @@
* libavl - library for manipulation of binary trees.
* Copyright (C) 1998, 1999, 2000, 2001, 2002, 2004 Free Software
* Foundation, Inc.
- * GNU Lesser General Public License
*/
@@ -44,7 +45,7 @@ avl *avl_insert(avl_tree *tree, avl *item) {
avl *p, *q; /* Iterator, and parent. */
avl *n; /* Newly inserted node. */
avl *w; /* New root of rebalanced subtree. */
- int dir; /* Direction to descend. */
+ unsigned char dir; /* Direction to descend. */
unsigned char da[AVL_MAX_HEIGHT]; /* Cached comparison results. */
int k = 0; /* Number of cached results. */
@@ -61,7 +62,7 @@ avl *avl_insert(avl_tree *tree, avl *item) {
if (p->avl_balance != 0)
z = q, y = p, k = 0;
- da[k++] = dir = (cmp > 0);
+ da[k++] = dir = (unsigned char)(cmp > 0);
}
n = q->avl_link[dir] = item;
@@ -149,7 +150,7 @@ avl *avl_remove(avl_tree *tree, avl *item) {
k = 0;
p = (avl *) &tree->root;
for(cmp = -1; cmp != 0; cmp = tree->compar(item, p)) {
- int dir = (cmp > 0);
+ unsigned char dir = (unsigned char)(cmp > 0);
pa[k] = p;
da[k++] = dir;
@@ -283,7 +284,7 @@ avl *avl_remove(avl_tree *tree, avl *item) {
// ---------------------------
// traversing
-int avl_walker(avl *node, int (*callback)(void *entry, void *data), void *data) {
+int avl_walker(avl *node, int (*callback)(void * /*entry*/, void * /*data*/), void *data) {
int total = 0, ret = 0;
if(node->avl_link[0]) {
@@ -305,9 +306,9 @@ int avl_walker(avl *node, int (*callback)(void *entry, void *data), void *data)
return total;
}
-int avl_traverse(avl_tree *t, int (*callback)(void *entry, void *data), void *data) {
- if(t->root)
- return avl_walker(t->root, callback, data);
+int avl_traverse(avl_tree *tree, int (*callback)(void * /*entry*/, void * /*data*/), void *data) {
+ if(tree->root)
+ return avl_walker(tree->root, callback, data);
else
return 0;
}
@@ -348,16 +349,16 @@ void avl_unlock(avl_tree_lock *t) {
// ---------------------------
// operations with locking
-void avl_init_lock(avl_tree_lock *t, int (*compar)(void *a, void *b)) {
- avl_init(&t->avl_tree, compar);
+void avl_init_lock(avl_tree_lock *tree, int (*compar)(void * /*a*/, void * /*b*/)) {
+ avl_init(&tree->avl_tree, compar);
#ifndef AVL_WITHOUT_PTHREADS
int lock;
#ifdef AVL_LOCK_WITH_MUTEX
- lock = netdata_mutex_init(&t->mutex, NULL);
+ lock = netdata_mutex_init(&tree->mutex, NULL);
#else
- lock = netdata_rwlock_init(&t->rwlock);
+ lock = netdata_rwlock_init(&tree->rwlock);
#endif
if(lock != 0)
@@ -366,38 +367,38 @@ void avl_init_lock(avl_tree_lock *t, int (*compar)(void *a, void *b)) {
#endif /* AVL_WITHOUT_PTHREADS */
}
-avl *avl_search_lock(avl_tree_lock *t, avl *a) {
- avl_read_lock(t);
- avl *ret = avl_search(&t->avl_tree, a);
- avl_unlock(t);
+avl *avl_search_lock(avl_tree_lock *tree, avl *item) {
+ avl_read_lock(tree);
+ avl *ret = avl_search(&tree->avl_tree, item);
+ avl_unlock(tree);
return ret;
}
-avl * avl_remove_lock(avl_tree_lock *t, avl *a) {
- avl_write_lock(t);
- avl *ret = avl_remove(&t->avl_tree, a);
- avl_unlock(t);
+avl * avl_remove_lock(avl_tree_lock *tree, avl *item) {
+ avl_write_lock(tree);
+ avl *ret = avl_remove(&tree->avl_tree, item);
+ avl_unlock(tree);
return ret;
}
-avl *avl_insert_lock(avl_tree_lock *t, avl *a) {
- avl_write_lock(t);
- avl * ret = avl_insert(&t->avl_tree, a);
- avl_unlock(t);
+avl *avl_insert_lock(avl_tree_lock *tree, avl *item) {
+ avl_write_lock(tree);
+ avl * ret = avl_insert(&tree->avl_tree, item);
+ avl_unlock(tree);
return ret;
}
-int avl_traverse_lock(avl_tree_lock *t, int (*callback)(void *entry, void *data), void *data) {
+int avl_traverse_lock(avl_tree_lock *tree, int (*callback)(void * /*entry*/, void * /*data*/), void *data) {
int ret;
- avl_read_lock(t);
- ret = avl_traverse(&t->avl_tree, callback, data);
- avl_unlock(t);
+ avl_read_lock(tree);
+ ret = avl_traverse(&tree->avl_tree, callback, data);
+ avl_unlock(tree);
return ret;
}
-void avl_init(avl_tree *t, int (*compar)(void *a, void *b)) {
- t->root = NULL;
- t->compar = compar;
+void avl_init(avl_tree *tree, int (*compar)(void * /*a*/, void * /*b*/)) {
+ tree->root = NULL;
+ tree->compar = compar;
}
-// ------------------ \ No newline at end of file
+// ------------------
diff --git a/src/avl.h b/libnetdata/avl/avl.h
index 19648cd1d..070bb3d3d 100644
--- a/src/avl.h
+++ b/libnetdata/avl/avl.h
@@ -1,7 +1,10 @@
+// SPDX-License-Identifier: LGPL-3.0-or-later
#ifndef _AVL_H
#define _AVL_H 1
+#include "../libnetdata.h"
+
/* Maximum AVL tree height. */
#ifndef AVL_MAX_HEIGHT
#define AVL_MAX_HEIGHT 92
@@ -56,31 +59,31 @@ typedef struct avl_tree_lock {
* a is linked directly to the tree, so it has to
* be properly allocated by the caller.
*/
-avl *avl_insert_lock(avl_tree_lock *t, avl *a) NEVERNULL WARNUNUSED;
-avl *avl_insert(avl_tree *t, avl *a) NEVERNULL WARNUNUSED;
+avl *avl_insert_lock(avl_tree_lock *tree, avl *item) NEVERNULL WARNUNUSED;
+avl *avl_insert(avl_tree *tree, avl *item) NEVERNULL WARNUNUSED;
/* Remove an element a from the AVL tree t
* returns a pointer to the removed element
* or NULL if an element equal to a is not found
* (equal as returned by t->compar())
*/
-avl *avl_remove_lock(avl_tree_lock *t, avl *a) WARNUNUSED;
-avl *avl_remove(avl_tree *t, avl *a) WARNUNUSED;
+avl *avl_remove_lock(avl_tree_lock *tree, avl *item) WARNUNUSED;
+avl *avl_remove(avl_tree *tree, avl *item) WARNUNUSED;
/* Find the element into the tree that equal to a
* (equal as returned by t->compar())
* returns NULL is no element is equal to a
*/
-avl *avl_search_lock(avl_tree_lock *t, avl *a);
-avl *avl_search(avl_tree *t, avl *a);
+avl *avl_search_lock(avl_tree_lock *tree, avl *item);
+avl *avl_search(avl_tree *tree, avl *item);
/* Initialize the avl_tree_lock
*/
-void avl_init_lock(avl_tree_lock *t, int (*compar)(void *a, void *b));
-void avl_init(avl_tree *t, int (*compar)(void *a, void *b));
+void avl_init_lock(avl_tree_lock *tree, int (*compar)(void *a, void *b));
+void avl_init(avl_tree *tree, int (*compar)(void *a, void *b));
-int avl_traverse_lock(avl_tree_lock *t, int (*callback)(void *entry, void *data), void *data);
-int avl_traverse(avl_tree *t, int (*callback)(void *entry, void *data), void *data);
+int avl_traverse_lock(avl_tree_lock *tree, int (*callback)(void *entry, void *data), void *data);
+int avl_traverse(avl_tree *tree, int (*callback)(void *entry, void *data), void *data);
#endif /* avl.h */
diff --git a/libnetdata/buffer/Makefile.am b/libnetdata/buffer/Makefile.am
new file mode 100644
index 000000000..1cb69ed99
--- /dev/null
+++ b/libnetdata/buffer/Makefile.am
@@ -0,0 +1,9 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+AUTOMAKE_OPTIONS = subdir-objects
+MAINTAINERCLEANFILES = $(srcdir)/Makefile.in
+
+
+dist_noinst_DATA = \
+ README.md \
+ $(NULL)
diff --git a/libnetdata/buffer/Makefile.in b/libnetdata/buffer/Makefile.in
new file mode 100644
index 000000000..21bbd3cc9
--- /dev/null
+++ b/libnetdata/buffer/Makefile.in
@@ -0,0 +1,464 @@
+# Makefile.in generated by automake 1.14.1 from Makefile.am.
+# @configure_input@
+
+# Copyright (C) 1994-2013 Free Software Foundation, Inc.
+
+# This Makefile.in is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+# PARTICULAR PURPOSE.
+
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diff --git a/libnetdata/buffer/README.md b/libnetdata/buffer/README.md
new file mode 100644
index 000000000..a7cfef89d
--- /dev/null
+++ b/libnetdata/buffer/README.md
@@ -0,0 +1,11 @@
+# BUFFER
+
+`BUFFER` is a convenience library for working with strings in `C`.
+Mainly, `BUFFER`s eliminate the need for tracking the string length, thus providing
+a safe alternative for string operations.
+
+Also, they are super fast in printing and appending data to the string and its `buffer_strlen()`
+is just a lookup (it does not traverse the string).
+
+Netdata uses `BUFFER`s for preparing web responses and buffering data to be sent upstream or
+to backend databases. \ No newline at end of file
diff --git a/src/web_buffer.c b/libnetdata/buffer/buffer.c
index 50c76f6d6..50672324b 100644
--- a/src/web_buffer.c
+++ b/libnetdata/buffer/buffer.c
@@ -1,4 +1,6 @@
-#include "common.h"
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "../libnetdata.h"
#define BUFFER_OVERFLOW_EOF "EOF"
@@ -379,8 +381,7 @@ void buffer_free(BUFFER *b) {
freez(b);
}
-void buffer_increase(BUFFER *b, size_t free_size_required)
-{
+void buffer_increase(BUFFER *b, size_t free_size_required) {
buffer_overflow_check(b);
size_t left = b->size - b->len;
diff --git a/src/web_buffer.h b/libnetdata/buffer/buffer.h
index 694c9d4ce..8e431bfd5 100644
--- a/src/web_buffer.h
+++ b/libnetdata/buffer/buffer.h
@@ -1,6 +1,10 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
#ifndef NETDATA_WEB_BUFFER_H
#define NETDATA_WEB_BUFFER_H 1
+#include "../libnetdata.h"
+
#define WEB_DATA_LENGTH_INCREASE_STEP 1024
typedef struct web_buffer {
diff --git a/libnetdata/clocks/Makefile.am b/libnetdata/clocks/Makefile.am
new file mode 100644
index 000000000..1cb69ed99
--- /dev/null
+++ b/libnetdata/clocks/Makefile.am
@@ -0,0 +1,9 @@
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+
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+
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diff --git a/libnetdata/clocks/Makefile.in b/libnetdata/clocks/Makefile.in
new file mode 100644
index 000000000..118d60317
--- /dev/null
+++ b/libnetdata/clocks/Makefile.in
@@ -0,0 +1,464 @@
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+MAINTAINERCLEANFILES = $(srcdir)/Makefile.in
+dist_noinst_DATA = \
+ README.md \
+ $(NULL)
+
+all: all-am
+
+.SUFFIXES:
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+ @for dep in $?; do \
+ case '$(am__configure_deps)' in \
+ *$$dep*) \
+ ( cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh ) \
+ && { if test -f $@; then exit 0; else break; fi; }; \
+ exit 1;; \
+ esac; \
+ done; \
+ echo ' cd $(top_srcdir) && $(AUTOMAKE) --gnu libnetdata/clocks/Makefile'; \
+ $(am__cd) $(top_srcdir) && \
+ $(AUTOMAKE) --gnu libnetdata/clocks/Makefile
+.PRECIOUS: Makefile
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+ @case '$?' in \
+ *config.status*) \
+ cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh;; \
+ *) \
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+ dist_files=`for file in $$list; do echo $$file; done | \
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+ sort -u` ;; \
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+ if test -f $$file || test -d $$file; then d=.; else d=$(srcdir); fi; \
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+ || cp -p $$d/$$file "$(distdir)/$$file" \
+ || exit 1; \
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+ fi
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diff --git a/libnetdata/clocks/README.md b/libnetdata/clocks/README.md
new file mode 100644
index 000000000..e69de29bb
--- /dev/null
+++ b/libnetdata/clocks/README.md
diff --git a/libnetdata/clocks/clocks.c b/libnetdata/clocks/clocks.c
new file mode 100644
index 000000000..f303ccddc
--- /dev/null
+++ b/libnetdata/clocks/clocks.c
@@ -0,0 +1,204 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "../libnetdata.h"
+
+#ifndef HAVE_CLOCK_GETTIME
+inline int clock_gettime(clockid_t clk_id, struct timespec *ts) {
+ struct timeval tv;
+ if(unlikely(gettimeofday(&tv, NULL) == -1)) {
+ error("gettimeofday() failed.");
+ return -1;
+ }
+ ts->tv_sec = tv.tv_sec;
+ ts->tv_nsec = (tv.tv_usec % USEC_PER_SEC) * NSEC_PER_USEC;
+ return 0;
+}
+#endif
+
+static inline time_t now_sec(clockid_t clk_id) {
+ struct timespec ts;
+ if(unlikely(clock_gettime(clk_id, &ts) == -1)) {
+ error("clock_gettime(%d, &timespec) failed.", clk_id);
+ return 0;
+ }
+ return ts.tv_sec;
+}
+
+static inline usec_t now_usec(clockid_t clk_id) {
+ struct timespec ts;
+ if(unlikely(clock_gettime(clk_id, &ts) == -1)) {
+ error("clock_gettime(%d, &timespec) failed.", clk_id);
+ return 0;
+ }
+ return (usec_t)ts.tv_sec * USEC_PER_SEC + (ts.tv_nsec % NSEC_PER_SEC) / NSEC_PER_USEC;
+}
+
+static inline int now_timeval(clockid_t clk_id, struct timeval *tv) {
+ struct timespec ts;
+
+ if(unlikely(clock_gettime(clk_id, &ts) == -1)) {
+ error("clock_gettime(%d, &timespec) failed.", clk_id);
+ tv->tv_sec = 0;
+ tv->tv_usec = 0;
+ return -1;
+ }
+
+ tv->tv_sec = ts.tv_sec;
+ tv->tv_usec = (suseconds_t)((ts.tv_nsec % NSEC_PER_SEC) / NSEC_PER_USEC);
+ return 0;
+}
+
+inline time_t now_realtime_sec(void) {
+ return now_sec(CLOCK_REALTIME);
+}
+
+inline usec_t now_realtime_usec(void) {
+ return now_usec(CLOCK_REALTIME);
+}
+
+inline int now_realtime_timeval(struct timeval *tv) {
+ return now_timeval(CLOCK_REALTIME, tv);
+}
+
+inline time_t now_monotonic_sec(void) {
+ return now_sec(CLOCK_MONOTONIC);
+}
+
+inline usec_t now_monotonic_usec(void) {
+ return now_usec(CLOCK_MONOTONIC);
+}
+
+inline int now_monotonic_timeval(struct timeval *tv) {
+ return now_timeval(CLOCK_MONOTONIC, tv);
+}
+
+inline time_t now_boottime_sec(void) {
+ return now_sec(CLOCK_BOOTTIME);
+}
+
+inline usec_t now_boottime_usec(void) {
+ return now_usec(CLOCK_BOOTTIME);
+}
+
+inline int now_boottime_timeval(struct timeval *tv) {
+ return now_timeval(CLOCK_BOOTTIME, tv);
+}
+
+inline usec_t timeval_usec(struct timeval *tv) {
+ return (usec_t)tv->tv_sec * USEC_PER_SEC + (tv->tv_usec % USEC_PER_SEC);
+}
+
+inline msec_t timeval_msec(struct timeval *tv) {
+ return (msec_t)tv->tv_sec * MSEC_PER_SEC + ((tv->tv_usec % USEC_PER_SEC) / MSEC_PER_SEC);
+}
+
+inline susec_t dt_usec_signed(struct timeval *now, struct timeval *old) {
+ usec_t ts1 = timeval_usec(now);
+ usec_t ts2 = timeval_usec(old);
+
+ if(likely(ts1 >= ts2)) return (susec_t)(ts1 - ts2);
+ return -((susec_t)(ts2 - ts1));
+}
+
+inline usec_t dt_usec(struct timeval *now, struct timeval *old) {
+ usec_t ts1 = timeval_usec(now);
+ usec_t ts2 = timeval_usec(old);
+ return (ts1 > ts2) ? (ts1 - ts2) : (ts2 - ts1);
+}
+
+inline void heartbeat_init(heartbeat_t *hb)
+{
+ hb->monotonic = hb->realtime = 0ULL;
+}
+
+// waits for the next heartbeat
+// it waits using the monotonic clock
+// it returns the dt using the realtime clock
+
+usec_t heartbeat_next(heartbeat_t *hb, usec_t tick) {
+ heartbeat_t now;
+ now.monotonic = now_monotonic_usec();
+ now.realtime = now_realtime_usec();
+
+ usec_t next_monotonic = now.monotonic - (now.monotonic % tick) + tick;
+
+ while(now.monotonic < next_monotonic) {
+ sleep_usec(next_monotonic - now.monotonic);
+ now.monotonic = now_monotonic_usec();
+ now.realtime = now_realtime_usec();
+ }
+
+ if(likely(hb->realtime != 0ULL)) {
+ usec_t dt_monotonic = now.monotonic - hb->monotonic;
+ usec_t dt_realtime = now.realtime - hb->realtime;
+
+ hb->monotonic = now.monotonic;
+ hb->realtime = now.realtime;
+
+ if(unlikely(dt_monotonic >= tick + tick / 2)) {
+ errno = 0;
+ error("heartbeat missed %llu monotonic microseconds", dt_monotonic - tick);
+ }
+
+ return dt_realtime;
+ }
+ else {
+ hb->monotonic = now.monotonic;
+ hb->realtime = now.realtime;
+ return 0ULL;
+ }
+}
+
+// returned the elapsed time, since the last heartbeat
+// using the monotonic clock
+
+inline usec_t heartbeat_monotonic_dt_to_now_usec(heartbeat_t *hb) {
+ if(!hb || !hb->monotonic) return 0ULL;
+ return now_monotonic_usec() - hb->monotonic;
+}
+
+int sleep_usec(usec_t usec) {
+
+#ifndef NETDATA_WITH_USLEEP
+ // we expect microseconds (1.000.000 per second)
+ // but timespec is nanoseconds (1.000.000.000 per second)
+ struct timespec rem, req = {
+ .tv_sec = (time_t) (usec / 1000000),
+ .tv_nsec = (suseconds_t) ((usec % 1000000) * 1000)
+ };
+
+ while (nanosleep(&req, &rem) == -1) {
+ if (likely(errno == EINTR)) {
+ debug(D_SYSTEM, "nanosleep() interrupted (while sleeping for %llu microseconds).", usec);
+ req.tv_sec = rem.tv_sec;
+ req.tv_nsec = rem.tv_nsec;
+ } else {
+ error("Cannot nanosleep() for %llu microseconds.", usec);
+ break;
+ }
+ }
+
+ return 0;
+#else
+ int ret = usleep(usec);
+ if(unlikely(ret == -1 && errno == EINVAL)) {
+ // on certain systems, usec has to be up to 999999
+ if(usec > 999999) {
+ int counter = usec / 999999;
+ while(counter--)
+ usleep(999999);
+
+ usleep(usec % 999999);
+ }
+ else {
+ error("Cannot usleep() for %llu microseconds.", usec);
+ return ret;
+ }
+ }
+
+ if(ret != 0)
+ error("usleep() failed for %llu microseconds.", usec);
+
+ return ret;
+#endif
+}
diff --git a/src/clocks.h b/libnetdata/clocks/clocks.h
index ca5715254..d576d86b9 100644
--- a/src/clocks.h
+++ b/libnetdata/clocks/clocks.h
@@ -1,6 +1,10 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
#ifndef NETDATA_CLOCKS_H
#define NETDATA_CLOCKS_H 1
+#include "../libnetdata.h"
+
#ifndef HAVE_STRUCT_TIMESPEC
struct timespec {
time_t tv_sec; /* seconds */
@@ -17,7 +21,10 @@ typedef unsigned long long msec_t;
typedef unsigned long long usec_t;
typedef long long susec_t;
-typedef usec_t heartbeat_t;
+typedef struct heartbeat {
+ usec_t monotonic;
+ usec_t realtime;
+} heartbeat_t;
/* Linux value is as good as any other */
#ifndef CLOCK_REALTIME
@@ -105,7 +112,7 @@ extern time_t now_boottime_sec(void);
extern usec_t now_boottime_usec(void);
-extern usec_t timeval_usec(struct timeval *ts);
+extern usec_t timeval_usec(struct timeval *tv);
extern msec_t timeval_msec(struct timeval *tv);
extern usec_t dt_usec(struct timeval *now, struct timeval *old);
@@ -119,6 +126,8 @@ extern void heartbeat_init(heartbeat_t *hb);
extern usec_t heartbeat_next(heartbeat_t *hb, usec_t tick);
/* Returns elapsed time in microseconds since last heartbeat */
-extern usec_t heartbeat_dt_usec(heartbeat_t *hb);
+extern usec_t heartbeat_monotonic_dt_to_now_usec(heartbeat_t *hb);
+
+extern int sleep_usec(usec_t usec);
#endif /* NETDATA_CLOCKS_H */
diff --git a/libnetdata/config/Makefile.am b/libnetdata/config/Makefile.am
new file mode 100644
index 000000000..1cb69ed99
--- /dev/null
+++ b/libnetdata/config/Makefile.am
@@ -0,0 +1,9 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+AUTOMAKE_OPTIONS = subdir-objects
+MAINTAINERCLEANFILES = $(srcdir)/Makefile.in
+
+
+dist_noinst_DATA = \
+ README.md \
+ $(NULL)
diff --git a/libnetdata/config/Makefile.in b/libnetdata/config/Makefile.in
new file mode 100644
index 000000000..940ccb8d8
--- /dev/null
+++ b/libnetdata/config/Makefile.in
@@ -0,0 +1,464 @@
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diff --git a/libnetdata/config/README.md b/libnetdata/config/README.md
new file mode 100644
index 000000000..5e170caa9
--- /dev/null
+++ b/libnetdata/config/README.md
@@ -0,0 +1,46 @@
+# netdata ini config files
+
+Configuration files `netdata.conf` and `stream.conf` are netdata ini files.
+
+## Motivation
+
+The whole idea came up when we were evaluating the documentation involved
+in maintaining a complex configuration system. Our intention was to give
+configuration options for everything imaginable. But then, documenting all
+these options would require a tremendous amount of time, users would have
+to search through endless pages for the option they need, etc.
+
+We concluded then that **configuring software like that is a waste of time
+and effort**. Of course there must be plenty of configuration options, but
+the implementation itself should require a lot less effort for both the
+developers and the users.
+
+So, we did this:
+
+1. No configuration is required to run netdata
+2. There are plenty of options to tweak
+3. There is minimal documentation (or no at all)
+
+## Why this works?
+
+The configuration file is a `name = value` dictionary with `[sections]`.
+Write whatever you like there as long as it follows this simple format.
+
+Netdata loads this dictionary and then when the code needs a value from
+it, it just looks up the `name` in the dictionary at the proper `section`.
+In all places, in the code, there are both the `names` and their
+`default values`, so if something is not found in the configuration
+file, the default is used. The lookup is made using B-Trees and hashes
+(no string comparisons), so they are super fast. Also the `names` of the
+settings can be `my super duper setting that once set to yes, will turn the world upside down = no`
+- so goodbye to most of the documentation involved.
+
+Next, netdata can generate a valid configuration for the user to edit.
+No need to remember anything or copy and paste settings. Just get the
+configuration from the server (`/netdata.conf` on your netdata server),
+edit it and save it.
+
+Last, what about options you believe you have set, but you misspelled?
+When you get the configuration file from the server, there will be a
+comment above all `name = value` pairs the server does not use.
+So you know that whatever you wrote there, is not used.
diff --git a/src/appconfig.c b/libnetdata/config/appconfig.c
index 2424864b5..411538446 100644
--- a/src/appconfig.c
+++ b/libnetdata/config/appconfig.c
@@ -1,4 +1,6 @@
-#include "common.h"
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "../libnetdata.h"
#define CONFIG_FILE_LINE_MAX ((CONFIG_MAX_NAME + CONFIG_MAX_VALUE + 1024) * 2)
@@ -7,11 +9,11 @@
#define CONFIG_VALUE_LOADED 0x01 // has been loaded from the config
#define CONFIG_VALUE_USED 0x02 // has been accessed from the program
-#define CONFIG_VALUE_CHANGED 0x04 // has been changed from the loaded value
+#define CONFIG_VALUE_CHANGED 0x04 // has been changed from the loaded value or the internal default value
#define CONFIG_VALUE_CHECKED 0x08 // has been checked if the value is different from the default
struct config_option {
- avl avl; // the index - this has to be first!
+ avl avl; // the index entry of this entry - this has to be first!
uint8_t flags;
uint32_t hash; // a simple hash to speed up searching
@@ -24,7 +26,7 @@ struct config_option {
};
struct section {
- avl avl;
+ avl avl; // the index entry of this section - this has to be first!
uint32_t hash; // a simple hash to speed up searching
// we first compare hashes, and only if the hashes are equal we do string comparisons
@@ -40,25 +42,6 @@ struct section {
// readers are protected using the rwlock in avl_tree_lock
};
-static int appconfig_section_compare(void *a, void *b);
-
-struct config netdata_config = {
- .sections = NULL,
- .mutex = NETDATA_MUTEX_INITIALIZER,
- .index = {
- { NULL, appconfig_section_compare },
- AVL_LOCK_INITIALIZER
- }
-};
-
-struct config stream_config = {
- .sections = NULL,
- .mutex = NETDATA_MUTEX_INITIALIZER,
- .index = {
- { NULL, appconfig_section_compare },
- AVL_LOCK_INITIALIZER
- }
-};
// ----------------------------------------------------------------------------
// locking
@@ -104,7 +87,7 @@ static struct config_option *appconfig_option_index_find(struct section *co, con
// ----------------------------------------------------------------------------
// config sections index
-static int appconfig_section_compare(void *a, void *b) {
+int appconfig_section_compare(void *a, void *b) {
if(((struct section *)a)->hash < ((struct section *)b)->hash) return -1;
else if(((struct section *)a)->hash > ((struct section *)b)->hash) return 1;
else return strcmp(((struct section *)a)->name, ((struct section *)b)->name);
@@ -445,7 +428,7 @@ int appconfig_load(struct config *root, char *filename, int overwrite_used)
FILE *fp = fopen(filename, "r");
if(!fp) {
- error("CONFIG: cannot open file '%s'", filename);
+ // info("CONFIG: cannot open file '%s'. Using internal defaults.", filename);
return 0;
}
@@ -493,10 +476,8 @@ int appconfig_load(struct config *root, char *filename, int overwrite_used)
error("CONFIG: ignoring line %d of file '%s', name is empty.", line, filename);
continue;
}
- if(!value) {
- debug(D_CONFIG, "CONFIG: ignoring line %d of file '%s', value is empty.", line, filename);
- continue;
- }
+
+ if(!value) value = "";
struct config_option *cv = appconfig_option_index_find(co, name, 0);
diff --git a/libnetdata/config/appconfig.h b/libnetdata/config/appconfig.h
new file mode 100644
index 000000000..6ac666d8b
--- /dev/null
+++ b/libnetdata/config/appconfig.h
@@ -0,0 +1,135 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+/*
+ * This section manages ini config files, like netdata.conf and stream.conf
+ *
+ * It is organized like this:
+ *
+ * struct config (i.e. netdata.conf or stream.conf)
+ * .sections = a linked list of struct section
+ * .mutex = a mutex to protect the above linked list due to multi-threading
+ * .index = an AVL tree of struct section
+ *
+ * struct section (i.e. [global] or [health] of netdata.conf)
+ * .value = a linked list of struct config_option
+ * .mutex = a mutex to protect the above linked list due to multi-threading
+ * .value_index = an AVL tree of struct config_option
+ *
+ * struct config_option (ie. a name-value pair for each ini file option)
+ *
+ * The following operations on name-value options are supported:
+ * SET to set the value of an option
+ * SET DEFAULT to set the value and the default value of an option
+ * GET to get the value of an option
+ * EXISTS to check if an option exists
+ * MOVE to move an option from a section to another section, and/or rename it
+ *
+ * GET and SET operations are provided for the following data types:
+ * STRING
+ * NUMBER (long long)
+ * FLOAT (long double)
+ * BOOLEAN (false, true)
+ * BOOLEAN ONDEMAND (false, true, auto)
+ *
+ * GET and SET operations create struct config_option, if it is not already present.
+ * This allows netdata to run even without netdata.conf and stream.conf. The internal
+ * defaults are used to create the structure that should exist in the ini file and the config
+ * file can be downloaded from the server.
+ *
+ * Also 2 operations are supported for the whole config file:
+ *
+ * LOAD To load the ini file from disk
+ * GENERATE To generate the ini file (this is used to download the ini file from the server)
+ *
+ * For each option (name-value pair), the system maintains 4 flags:
+ * LOADED to indicate that the value has been loaded from the file
+ * USED to indicate that netdata used the value
+ * CHANGED to indicate that the value has been changed from the loaded value or the internal default value
+ * CHECKED is used internally for optimization (to avoid an strcmp() every time GET is called).
+ *
+ * TODO:
+ * 1. The linked lists and the mutexes can be removed and the AVL trees can become DICTIONARY.
+ * This part of the code was written before we add traversal to AVL.
+ *
+ * 2. High level data types could be supported, to simplify the rest of the code:
+ * MULTIPLE CHOICE to let the user select one of the supported keywords
+ * this would allow users see in comments the available options
+ *
+ * SIMPLE PATTERN to let the user define netdata SIMPLE PATTERNS
+ *
+ * 3. Sorting of options should be supported.
+ * Today, when the ini file is downloaded from the server, the options are shown in the order
+ * they appear in the linked list (the order they were added, listing changed options first).
+ * If we remove the linked list, the order they appear in the AVL tree will be used (which is
+ * random due to simple_hash()).
+ * Ideally, we support sorting of options when generating the ini file.
+ *
+ * 4. There is no free() operation. So, memory is freed on netdata exit.
+ *
+ * 5. Avoid memory fragmentation
+ * Since entries are created from multiple threads and a lot of allocations are required
+ * for each config_option, fragmentation can be a problem for IoT.
+ *
+ * 6. Although this way of managing options is quite flexible and dynamic, it wastes memory
+ * for the names of the options. Since most of the option names are static, we could provide
+ * a method to allocate only the dynamic option names.
+ */
+
+#ifndef NETDATA_CONFIG_H
+#define NETDATA_CONFIG_H 1
+
+#include "../libnetdata.h"
+
+#define CONFIG_FILENAME "netdata.conf"
+
+#define CONFIG_SECTION_GLOBAL "global"
+#define CONFIG_SECTION_WEB "web"
+#define CONFIG_SECTION_STATSD "statsd"
+#define CONFIG_SECTION_PLUGINS "plugins"
+#define CONFIG_SECTION_REGISTRY "registry"
+#define CONFIG_SECTION_HEALTH "health"
+#define CONFIG_SECTION_BACKEND "backend"
+#define CONFIG_SECTION_STREAM "stream"
+
+// these are used to limit the configuration names and values lengths
+// they are not enforced by config.c functions (they will strdup() all strings, no matter of their length)
+#define CONFIG_MAX_NAME 1024
+#define CONFIG_MAX_VALUE 2048
+
+struct config {
+ struct section *sections;
+ netdata_mutex_t mutex;
+ avl_tree_lock index;
+};
+
+#define CONFIG_BOOLEAN_INVALID 100 // an invalid value to check for validity (used as default initialization when needed)
+
+#define CONFIG_BOOLEAN_NO 0 // disabled
+#define CONFIG_BOOLEAN_YES 1 // enabled
+
+#ifndef CONFIG_BOOLEAN_AUTO
+#define CONFIG_BOOLEAN_AUTO 2 // enabled if it has useful info when enabled
+#endif
+
+extern int appconfig_load(struct config *root, char *filename, int overwrite_used);
+
+extern char *appconfig_get(struct config *root, const char *section, const char *name, const char *default_value);
+extern long long appconfig_get_number(struct config *root, const char *section, const char *name, long long value);
+extern LONG_DOUBLE appconfig_get_float(struct config *root, const char *section, const char *name, LONG_DOUBLE value);
+extern int appconfig_get_boolean(struct config *root, const char *section, const char *name, int value);
+extern int appconfig_get_boolean_ondemand(struct config *root, const char *section, const char *name, int value);
+
+extern const char *appconfig_set(struct config *root, const char *section, const char *name, const char *value);
+extern const char *appconfig_set_default(struct config *root, const char *section, const char *name, const char *value);
+extern long long appconfig_set_number(struct config *root, const char *section, const char *name, long long value);
+extern LONG_DOUBLE appconfig_set_float(struct config *root, const char *section, const char *name, LONG_DOUBLE value);
+extern int appconfig_set_boolean(struct config *root, const char *section, const char *name, int value);
+
+extern int appconfig_exists(struct config *root, const char *section, const char *name);
+extern int appconfig_move(struct config *root, const char *section_old, const char *name_old, const char *section_new, const char *name_new);
+
+extern void appconfig_generate(struct config *root, BUFFER *wb, int only_changed);
+
+extern int appconfig_section_compare(void *a, void *b);
+
+#endif /* NETDATA_CONFIG_H */
diff --git a/libnetdata/dictionary/Makefile.am b/libnetdata/dictionary/Makefile.am
new file mode 100644
index 000000000..1cb69ed99
--- /dev/null
+++ b/libnetdata/dictionary/Makefile.am
@@ -0,0 +1,9 @@
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+
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new file mode 100644
index 000000000..bafd64a8a
--- /dev/null
+++ b/libnetdata/dictionary/Makefile.in
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diff --git a/libnetdata/dictionary/README.md b/libnetdata/dictionary/README.md
new file mode 100644
index 000000000..e69de29bb
--- /dev/null
+++ b/libnetdata/dictionary/README.md
diff --git a/src/dictionary.c b/libnetdata/dictionary/dictionary.c
index 512b4bbe6..dd94a801d 100644
--- a/src/dictionary.c
+++ b/libnetdata/dictionary/dictionary.c
@@ -1,4 +1,6 @@
-#include "common.h"
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "../libnetdata.h"
// ----------------------------------------------------------------------------
// dictionary statistics
diff --git a/src/dictionary.h b/libnetdata/dictionary/dictionary.h
index f028dbb30..61b9bfc61 100644
--- a/src/dictionary.h
+++ b/libnetdata/dictionary/dictionary.h
@@ -1,6 +1,10 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
#ifndef NETDATA_DICTIONARY_H
#define NETDATA_DICTIONARY_H 1
+#include "../libnetdata.h"
+
struct dictionary_stats {
unsigned long long inserts;
unsigned long long deletes;
@@ -35,7 +39,7 @@ typedef struct dictionary {
extern DICTIONARY *dictionary_create(uint8_t flags);
extern void dictionary_destroy(DICTIONARY *dict);
-extern void *dictionary_set(DICTIONARY *dict, const char *name, void *value, size_t value_len);
+extern void *dictionary_set(DICTIONARY *dict, const char *name, void *value, size_t value_len) NEVERNULL;
extern void *dictionary_get(DICTIONARY *dict, const char *name);
extern int dictionary_del(DICTIONARY *dict, const char *name);
diff --git a/libnetdata/eval/Makefile.am b/libnetdata/eval/Makefile.am
new file mode 100644
index 000000000..1cb69ed99
--- /dev/null
+++ b/libnetdata/eval/Makefile.am
@@ -0,0 +1,9 @@
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+
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+
+
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+ README.md \
+ $(NULL)
diff --git a/libnetdata/eval/Makefile.in b/libnetdata/eval/Makefile.in
new file mode 100644
index 000000000..0b8341b03
--- /dev/null
+++ b/libnetdata/eval/Makefile.in
@@ -0,0 +1,464 @@
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diff --git a/libnetdata/eval/README.md b/libnetdata/eval/README.md
new file mode 100644
index 000000000..e69de29bb
--- /dev/null
+++ b/libnetdata/eval/README.md
diff --git a/src/eval.c b/libnetdata/eval/eval.c
index 84369f6d4..0316edac0 100644
--- a/src/eval.c
+++ b/libnetdata/eval/eval.c
@@ -1,4 +1,6 @@
-#include "common.h"
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "../libnetdata.h"
// ----------------------------------------------------------------------------
// data structures for storing the parsed expression in memory
@@ -1057,33 +1059,33 @@ static inline EVAL_NODE *parse_full_expression(const char **string, int *error)
// ----------------------------------------------------------------------------
// public API
-int expression_evaluate(EVAL_EXPRESSION *exp) {
- exp->error = EVAL_ERROR_OK;
+int expression_evaluate(EVAL_EXPRESSION *expression) {
+ expression->error = EVAL_ERROR_OK;
- buffer_reset(exp->error_msg);
- exp->result = eval_node(exp, (EVAL_NODE *)exp->nodes, &exp->error);
+ buffer_reset(expression->error_msg);
+ expression->result = eval_node(expression, (EVAL_NODE *)expression->nodes, &expression->error);
- if(unlikely(isnan(exp->result))) {
- if(exp->error == EVAL_ERROR_OK)
- exp->error = EVAL_ERROR_VALUE_IS_NAN;
+ if(unlikely(isnan(expression->result))) {
+ if(expression->error == EVAL_ERROR_OK)
+ expression->error = EVAL_ERROR_VALUE_IS_NAN;
}
- else if(unlikely(isinf(exp->result))) {
- if(exp->error == EVAL_ERROR_OK)
- exp->error = EVAL_ERROR_VALUE_IS_INFINITE;
+ else if(unlikely(isinf(expression->result))) {
+ if(expression->error == EVAL_ERROR_OK)
+ expression->error = EVAL_ERROR_VALUE_IS_INFINITE;
}
- else if(unlikely(exp->error == EVAL_ERROR_UNKNOWN_VARIABLE)) {
+ else if(unlikely(expression->error == EVAL_ERROR_UNKNOWN_VARIABLE)) {
// although there is an unknown variable
// the expression was evaluated successfully
- exp->error = EVAL_ERROR_OK;
+ expression->error = EVAL_ERROR_OK;
}
- if(exp->error != EVAL_ERROR_OK) {
- exp->result = NAN;
+ if(expression->error != EVAL_ERROR_OK) {
+ expression->result = NAN;
- if(buffer_strlen(exp->error_msg))
- buffer_strcat(exp->error_msg, "; ");
+ if(buffer_strlen(expression->error_msg))
+ buffer_strcat(expression->error_msg, "; ");
- buffer_sprintf(exp->error_msg, "failed to evaluate expression with error %d (%s)", exp->error, expression_strerror(exp->error));
+ buffer_sprintf(expression->error_msg, "failed to evaluate expression with error %d (%s)", expression->error, expression_strerror(expression->error));
return 0;
}
@@ -1134,14 +1136,14 @@ EVAL_EXPRESSION *expression_parse(const char *string, const char **failed_at, in
return exp;
}
-void expression_free(EVAL_EXPRESSION *exp) {
- if(!exp) return;
+void expression_free(EVAL_EXPRESSION *expression) {
+ if(!expression) return;
- if(exp->nodes) eval_node_free((EVAL_NODE *)exp->nodes);
- freez((void *)exp->source);
- freez((void *)exp->parsed_as);
- buffer_free(exp->error_msg);
- freez(exp);
+ if(expression->nodes) eval_node_free((EVAL_NODE *)expression->nodes);
+ freez((void *)expression->source);
+ freez((void *)expression->parsed_as);
+ buffer_free(expression->error_msg);
+ freez(expression);
}
const char *expression_strerror(int error) {
diff --git a/src/eval.h b/libnetdata/eval/eval.h
index 6a5562fd4..57dae9d0b 100644
--- a/src/eval.h
+++ b/libnetdata/eval/eval.h
@@ -1,8 +1,22 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
#ifndef NETDATA_EVAL_H
-#define NETDATA_EVAL_H
+#define NETDATA_EVAL_H 1
+
+#include "../libnetdata.h"
#define EVAL_MAX_VARIABLE_NAME_LENGTH 300
+typedef enum rrdcalc_status {
+ RRDCALC_STATUS_REMOVED = -2,
+ RRDCALC_STATUS_UNDEFINED = -1,
+ RRDCALC_STATUS_UNINITIALIZED = 0,
+ RRDCALC_STATUS_CLEAR = 1,
+ RRDCALC_STATUS_RAISED = 2,
+ RRDCALC_STATUS_WARNING = 3,
+ RRDCALC_STATUS_CRITICAL = 4
+} RRDCALC_STATUS;
+
typedef struct eval_variable {
char *name;
uint32_t hash;
@@ -59,7 +73,7 @@ typedef struct eval_expression {
extern EVAL_EXPRESSION *expression_parse(const char *string, const char **failed_at, int *error);
// free all resources allocated for an expression
-extern void expression_free(EVAL_EXPRESSION *op);
+extern void expression_free(EVAL_EXPRESSION *expression);
// convert an error code to a message
extern const char *expression_strerror(int error);
@@ -69,4 +83,6 @@ extern const char *expression_strerror(int error);
// 2 = FAILED, the error message is in: buffer_tostring(expression->error_msg)
extern int expression_evaluate(EVAL_EXPRESSION *expression);
+extern int health_variable_lookup(const char *variable, uint32_t hash, struct rrdcalc *rc, calculated_number *result);
+
#endif //NETDATA_EVAL_H
diff --git a/src/inlined.h b/libnetdata/inlined.h
index 9ab2dca73..6a5994c12 100644
--- a/src/inlined.h
+++ b/libnetdata/inlined.h
@@ -1,7 +1,9 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
#ifndef NETDATA_INLINED_H
-#define NETDATA_INLINED_H
+#define NETDATA_INLINED_H 1
-#include "common.h"
+#include "libnetdata.h"
#ifdef KERNEL_32BIT
typedef uint32_t kernel_uint_t;
@@ -245,12 +247,17 @@ static inline char *strncpyz(char *dst, const char *src, size_t n) {
}
static inline int read_file(const char *filename, char *buffer, size_t size) {
+ if(unlikely(!size)) return 3;
+
int fd = open(filename, O_RDONLY, 0666);
- if(unlikely(fd == -1))
+ if(unlikely(fd == -1)) {
+ buffer[0] = '\0';
return 1;
+ }
ssize_t r = read(fd, buffer, size);
if(unlikely(r == -1)) {
+ buffer[0] = '\0';
close(fd);
return 2;
}
diff --git a/src/common.c b/libnetdata/libnetdata.c
index 94fd5e429..de330cae8 100644
--- a/src/common.c
+++ b/libnetdata/libnetdata.c
@@ -1,4 +1,6 @@
-#include "common.h"
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "libnetdata.h"
#ifdef __APPLE__
#define INHERIT_NONE 0
@@ -8,17 +10,6 @@
# define MADV_DONTFORK INHERIT_NONE
#endif /* __FreeBSD__ || __APPLE__*/
-char *netdata_configured_hostname = NULL;
-char *netdata_configured_config_dir = NULL;
-char *netdata_configured_log_dir = NULL;
-char *netdata_configured_plugins_dir = NULL;
-char *netdata_configured_web_dir = NULL;
-char *netdata_configured_cache_dir = NULL;
-char *netdata_configured_varlib_dir = NULL;
-char *netdata_configured_home_dir = NULL;
-char *netdata_configured_host_prefix = NULL;
-char *netdata_configured_timezone = NULL;
-
struct rlimit rlimit_nofile = { .rlim_cur = 1024, .rlim_max = 1024 };
int enable_ksm = 1;
@@ -36,182 +27,172 @@ const char *program_version = VERSION;
// routines.
#ifdef NETDATA_LOG_ALLOCATIONS
-static struct memory_statistics {
- volatile size_t malloc_calls_made;
- volatile size_t calloc_calls_made;
- volatile size_t realloc_calls_made;
- volatile size_t strdup_calls_made;
- volatile size_t free_calls_made;
- volatile size_t memory_calls_made;
- volatile size_t allocated_memory;
- volatile size_t mmapped_memory;
-} memory_statistics;
-
-static inline void print_allocations(const char *file, const char *function, const unsigned long line) {
- static struct memory_statistics old = { 0, 0, 0, 0, 0, 0, 0, 0 };
-
- //if(unlikely(!(memory_statistics.memory_calls_made % 5))) {
- fprintf(stderr, "(%04lu@%-10.10s:%-15.15s): Allocated %zu KB (+%zu B), mmapped %zu KB (+%zu B): malloc %zu (+%zu), calloc %zu (+%zu), realloc %zu (+%zu), strdup %zu (+%zu), free %zu (+%zu)\n",
- line, file, function,
- (memory_statistics.allocated_memory + 512) / 1024, memory_statistics.allocated_memory - old.allocated_memory,
- (memory_statistics.mmapped_memory + 512) / 1024, memory_statistics.mmapped_memory - old.mmapped_memory,
- memory_statistics.malloc_calls_made, memory_statistics.malloc_calls_made - old.malloc_calls_made,
- memory_statistics.calloc_calls_made, memory_statistics.calloc_calls_made - old.calloc_calls_made,
- memory_statistics.realloc_calls_made, memory_statistics.realloc_calls_made - old.realloc_calls_made,
- memory_statistics.strdup_calls_made, memory_statistics.strdup_calls_made - old.strdup_calls_made,
- memory_statistics.free_calls_made, memory_statistics.free_calls_made - old.free_calls_made
- );
-
- memcpy(&old, &memory_statistics, sizeof(struct memory_statistics));
- //}
+static __thread struct memory_statistics {
+ volatile ssize_t malloc_calls_made;
+ volatile ssize_t calloc_calls_made;
+ volatile ssize_t realloc_calls_made;
+ volatile ssize_t strdup_calls_made;
+ volatile ssize_t free_calls_made;
+ volatile ssize_t memory_calls_made;
+ volatile ssize_t allocated_memory;
+ volatile ssize_t mmapped_memory;
+} memory_statistics = { 0, 0, 0, 0, 0, 0, 0, 0 };
+
+__thread size_t log_thread_memory_allocations = 0;
+
+static inline void print_allocations(const char *file, const char *function, const unsigned long line, const char *type, size_t size) {
+ static __thread struct memory_statistics old = { 0, 0, 0, 0, 0, 0, 0, 0 };
+
+ fprintf(stderr, "%s iteration %zu MEMORY TRACE: %lu@%s : %s : %s : %zu\n",
+ netdata_thread_tag(),
+ log_thread_memory_allocations,
+ line, file, function,
+ type, size
+ );
+
+ fprintf(stderr, "%s iteration %zu MEMORY ALLOCATIONS: (%04lu@%-40.40s:%-40.40s): Allocated %zd KB (%+zd B), mmapped %zd KB (%+zd B): %s : malloc %zd (%+zd), calloc %zd (%+zd), realloc %zd (%+zd), strdup %zd (%+zd), free %zd (%+zd)\n",
+ netdata_thread_tag(),
+ log_thread_memory_allocations,
+ line, file, function,
+ (memory_statistics.allocated_memory + 512) / 1024, memory_statistics.allocated_memory - old.allocated_memory,
+ (memory_statistics.mmapped_memory + 512) / 1024, memory_statistics.mmapped_memory - old.mmapped_memory,
+ type,
+ memory_statistics.malloc_calls_made, memory_statistics.malloc_calls_made - old.malloc_calls_made,
+ memory_statistics.calloc_calls_made, memory_statistics.calloc_calls_made - old.calloc_calls_made,
+ memory_statistics.realloc_calls_made, memory_statistics.realloc_calls_made - old.realloc_calls_made,
+ memory_statistics.strdup_calls_made, memory_statistics.strdup_calls_made - old.strdup_calls_made,
+ memory_statistics.free_calls_made, memory_statistics.free_calls_made - old.free_calls_made
+ );
+
+ memcpy(&old, &memory_statistics, sizeof(struct memory_statistics));
}
-static inline void malloc_accounting(const char *file, const char *function, const unsigned long line, size_t size) {
-#if defined(HAVE_C___ATOMIC) && !defined(NETDATA_NO_ATOMIC_INSTRUCTIONS)
- __atomic_fetch_add(&memory_statistics.memory_calls_made, 1, __ATOMIC_SEQ_CST);
- __atomic_fetch_add(&memory_statistics.malloc_calls_made, 1, __ATOMIC_SEQ_CST);
- __atomic_fetch_add(&memory_statistics.allocated_memory, size, __ATOMIC_SEQ_CST);
-#else
- // this is for debugging - we don't care locking it
- memory_statistics.memory_calls_made++;
- memory_statistics.malloc_calls_made++;
- memory_statistics.allocated_memory += size;
-#endif
- print_allocations(file, function, line);
+static inline void mmap_accounting(size_t size) {
+ if(log_thread_memory_allocations) {
+ memory_statistics.memory_calls_made++;
+ memory_statistics.mmapped_memory += size;
+ }
}
-static inline void mmap_accounting(size_t size) {
-#if defined(HAVE_C___ATOMIC) && !defined(NETDATA_NO_ATOMIC_INSTRUCTIONS)
- __atomic_fetch_add(&memory_statistics.malloc_calls_made, 1, __ATOMIC_SEQ_CST);
- __atomic_fetch_add(&memory_statistics.mmapped_memory, size, __ATOMIC_SEQ_CST);
-#else
- // this is for debugging - we don't care locking it
- memory_statistics.memory_calls_made++;
- memory_statistics.mmapped_memory += size;
-#endif
+void *mallocz_int(const char *file, const char *function, const unsigned long line, size_t size) {
+ if(log_thread_memory_allocations) {
+ memory_statistics.memory_calls_made++;
+ memory_statistics.malloc_calls_made++;
+ memory_statistics.allocated_memory += size;
+ print_allocations(file, function, line, "malloc()", size);
+ }
+
+ size_t *n = (size_t *)malloc(sizeof(size_t) + size);
+ if (unlikely(!n)) fatal("mallocz() cannot allocate %zu bytes of memory.", size);
+ *n = size;
+ return (void *)&n[1];
}
-static inline void calloc_accounting(const char *file, const char *function, const unsigned long line, size_t size) {
-#if defined(HAVE_C___ATOMIC) && !defined(NETDATA_NO_ATOMIC_INSTRUCTIONS)
- __atomic_fetch_add(&memory_statistics.memory_calls_made, 1, __ATOMIC_SEQ_CST);
- __atomic_fetch_add(&memory_statistics.calloc_calls_made, 1, __ATOMIC_SEQ_CST);
- __atomic_fetch_add(&memory_statistics.allocated_memory, size, __ATOMIC_SEQ_CST);
-#else
- // this is for debugging - we don't care locking it
- memory_statistics.memory_calls_made++;
- memory_statistics.calloc_calls_made++;
- memory_statistics.allocated_memory += size;
-#endif
- print_allocations(file, function, line);
+void *callocz_int(const char *file, const char *function, const unsigned long line, size_t nmemb, size_t size) {
+ size = nmemb * size;
+
+ if(log_thread_memory_allocations) {
+ memory_statistics.memory_calls_made++;
+ memory_statistics.calloc_calls_made++;
+ memory_statistics.allocated_memory += size;
+ print_allocations(file, function, line, "calloc()", size);
+ }
+
+ size_t *n = (size_t *)calloc(1, sizeof(size_t) + size);
+ if (unlikely(!n)) fatal("callocz() cannot allocate %zu bytes of memory.", size);
+ *n = size;
+ return (void *)&n[1];
}
-static inline void realloc_accounting(const char *file, const char *function, const unsigned long line, void *ptr, size_t size) {
- (void)ptr;
+void *reallocz_int(const char *file, const char *function, const unsigned long line, void *ptr, size_t size) {
+ if(!ptr) return mallocz_int(file, function, line, size);
-#if defined(HAVE_C___ATOMIC) && !defined(NETDATA_NO_ATOMIC_INSTRUCTIONS)
- __atomic_fetch_add(&memory_statistics.memory_calls_made, 1, __ATOMIC_SEQ_CST);
- __atomic_fetch_add(&memory_statistics.realloc_calls_made, 1, __ATOMIC_SEQ_CST);
- __atomic_fetch_add(&memory_statistics.allocated_memory, size, __ATOMIC_SEQ_CST);
-#else
- // this is for debugging - we don't care locking it
- memory_statistics.memory_calls_made++;
- memory_statistics.realloc_calls_made++;
- memory_statistics.allocated_memory += size;
-#endif
- print_allocations(file, function, line);
+ size_t *n = (size_t *)ptr;
+ n--;
+ size_t old_size = *n;
+
+ n = realloc(n, sizeof(size_t) + size);
+ if (unlikely(!n)) fatal("reallocz() cannot allocate %zu bytes of memory (from %zu bytes).", size, old_size);
+
+ if(log_thread_memory_allocations) {
+ memory_statistics.memory_calls_made++;
+ memory_statistics.realloc_calls_made++;
+ memory_statistics.allocated_memory += (size - old_size);
+ print_allocations(file, function, line, "realloc()", size - old_size);
+ }
+
+ *n = size;
+ return (void *)&n[1];
}
-static inline void strdup_accounting(const char *file, const char *function, const unsigned long line, const char *s) {
+char *strdupz_int(const char *file, const char *function, const unsigned long line, const char *s) {
size_t size = strlen(s) + 1;
-#if defined(HAVE_C___ATOMIC) && !defined(NETDATA_NO_ATOMIC_INSTRUCTIONS)
- __atomic_fetch_add(&memory_statistics.memory_calls_made, 1, __ATOMIC_SEQ_CST);
- __atomic_fetch_add(&memory_statistics.strdup_calls_made, 1, __ATOMIC_SEQ_CST);
- __atomic_fetch_add(&memory_statistics.allocated_memory, size, __ATOMIC_SEQ_CST);
-#else
- // this is for debugging - we don't care locking it
- memory_statistics.memory_calls_made++;
- memory_statistics.strdup_calls_made++;
- memory_statistics.allocated_memory += size;
-#endif
- print_allocations(file, function, line);
+ if(log_thread_memory_allocations) {
+ memory_statistics.memory_calls_made++;
+ memory_statistics.strdup_calls_made++;
+ memory_statistics.allocated_memory += size;
+ print_allocations(file, function, line, "strdup()", size);
+ }
+
+ size_t *n = (size_t *)malloc(sizeof(size_t) + size);
+ if (unlikely(!n)) fatal("strdupz() cannot allocate %zu bytes of memory.", size);
+
+ *n = size;
+ char *t = (char *)&n[1];
+ strcpy(t, s);
+ return t;
}
-static inline void free_accounting(const char *file, const char *function, const unsigned long line, void *ptr) {
- (void)file;
- (void)function;
- (void)line;
+void freez_int(const char *file, const char *function, const unsigned long line, void *ptr) {
+ if(unlikely(!ptr)) return;
- if(likely(ptr)) {
-#if defined(HAVE_C___ATOMIC) && !defined(NETDATA_NO_ATOMIC_INSTRUCTIONS)
- __atomic_fetch_add(&memory_statistics.memory_calls_made, 1, __ATOMIC_SEQ_CST);
- __atomic_fetch_add(&memory_statistics.free_calls_made, 1, __ATOMIC_SEQ_CST);
-#else
- // this is for debugging - we don't care locking it
+ size_t *n = (size_t *)ptr;
+ n--;
+ size_t size = *n;
+
+ if(log_thread_memory_allocations) {
memory_statistics.memory_calls_made++;
memory_statistics.free_calls_made++;
-#endif
+ memory_statistics.allocated_memory -= size;
+ print_allocations(file, function, line, "free()", size);
}
-}
-#endif
-#ifdef NETDATA_LOG_ALLOCATIONS
-char *strdupz_int(const char *file, const char *function, const unsigned long line, const char *s) {
- strdup_accounting(file, function, line, s);
+ free(n);
+}
#else
-char *strdupz(const char *s) {
-#endif
+char *strdupz(const char *s) {
char *t = strdup(s);
if (unlikely(!t)) fatal("Cannot strdup() string '%s'", s);
return t;
}
-#ifdef NETDATA_LOG_ALLOCATIONS
-void *mallocz_int(const char *file, const char *function, const unsigned long line, size_t size) {
- malloc_accounting(file, function, line, size);
-#else
-void *mallocz(size_t size) {
-#endif
+void freez(void *ptr) {
+ free(ptr);
+}
+void *mallocz(size_t size) {
void *p = malloc(size);
if (unlikely(!p)) fatal("Cannot allocate %zu bytes of memory.", size);
return p;
}
-#ifdef NETDATA_LOG_ALLOCATIONS
-void *callocz_int(const char *file, const char *function, const unsigned long line, size_t nmemb, size_t size) {
- calloc_accounting(file, function, line, nmemb * size);
-#else
void *callocz(size_t nmemb, size_t size) {
-#endif
-
void *p = calloc(nmemb, size);
if (unlikely(!p)) fatal("Cannot allocate %zu bytes of memory.", nmemb * size);
return p;
}
-#ifdef NETDATA_LOG_ALLOCATIONS
-void *reallocz_int(const char *file, const char *function, const unsigned long line, void *ptr, size_t size) {
- realloc_accounting(file, function, line, ptr, size);
-#else
void *reallocz(void *ptr, size_t size) {
-#endif
-
void *p = realloc(ptr, size);
if (unlikely(!p)) fatal("Cannot re-allocate memory to %zu bytes.", size);
return p;
}
-#ifdef NETDATA_LOG_ALLOCATIONS
-void freez_int(const char *file, const char *function, const unsigned long line, void *ptr) {
- free_accounting(file, function, line, ptr);
-#else
-void freez(void *ptr) {
#endif
- free(ptr);
-}
+// --------------------------------------------------------------------------------------------------------------------
void json_escape_string(char *dst, const char *src, size_t size) {
const char *t;
@@ -244,52 +225,6 @@ void json_fix_string(char *s) {
}
}
-int sleep_usec(usec_t usec) {
-
-#ifndef NETDATA_WITH_USLEEP
- // we expect microseconds (1.000.000 per second)
- // but timespec is nanoseconds (1.000.000.000 per second)
- struct timespec rem, req = {
- .tv_sec = (time_t) (usec / 1000000),
- .tv_nsec = (suseconds_t) ((usec % 1000000) * 1000)
- };
-
- while (nanosleep(&req, &rem) == -1) {
- if (likely(errno == EINTR)) {
- debug(D_SYSTEM, "nanosleep() interrupted (while sleeping for %llu microseconds).", usec);
- req.tv_sec = rem.tv_sec;
- req.tv_nsec = rem.tv_nsec;
- } else {
- error("Cannot nanosleep() for %llu microseconds.", usec);
- break;
- }
- }
-
- return 0;
-#else
- int ret = usleep(usec);
- if(unlikely(ret == -1 && errno == EINVAL)) {
- // on certain systems, usec has to be up to 999999
- if(usec > 999999) {
- int counter = usec / 999999;
- while(counter--)
- usleep(999999);
-
- usleep(usec % 999999);
- }
- else {
- error("Cannot usleep() for %llu microseconds.", usec);
- return ret;
- }
- }
-
- if(ret != 0)
- error("usleep() failed for %llu microseconds.", usec);
-
- return ret;
-#endif
-}
-
unsigned char netdata_map_chart_names[256] = {
[0] = '\0', //
[1] = '_', //
@@ -1183,124 +1118,6 @@ int snprintfz(char *dst, size_t n, const char *fmt, ...) {
return ret;
}
-// ----------------------------------------------------------------------------
-// system functions
-// to retrieve settings of the system
-
-int processors = 1;
-long get_system_cpus(void) {
- processors = 1;
-
- #ifdef __APPLE__
- int32_t tmp_processors;
-
- if (unlikely(GETSYSCTL_BY_NAME("hw.logicalcpu", tmp_processors))) {
- error("Assuming system has %d processors.", processors);
- } else {
- processors = tmp_processors;
- }
-
- return processors;
- #elif __FreeBSD__
- int32_t tmp_processors;
-
- if (unlikely(GETSYSCTL_BY_NAME("hw.ncpu", tmp_processors))) {
- error("Assuming system has %d processors.", processors);
- } else {
- processors = tmp_processors;
- }
-
- return processors;
- #else
-
- char filename[FILENAME_MAX + 1];
- snprintfz(filename, FILENAME_MAX, "%s/proc/stat", netdata_configured_host_prefix);
-
- procfile *ff = procfile_open(filename, NULL, PROCFILE_FLAG_DEFAULT);
- if(!ff) {
- error("Cannot open file '%s'. Assuming system has %d processors.", filename, processors);
- return processors;
- }
-
- ff = procfile_readall(ff);
- if(!ff) {
- error("Cannot open file '%s'. Assuming system has %d processors.", filename, processors);
- return processors;
- }
-
- processors = 0;
- unsigned int i;
- for(i = 0; i < procfile_lines(ff); i++) {
- if(!procfile_linewords(ff, i)) continue;
-
- if(strncmp(procfile_lineword(ff, i, 0), "cpu", 3) == 0) processors++;
- }
- processors--;
- if(processors < 1) processors = 1;
-
- procfile_close(ff);
-
- debug(D_SYSTEM, "System has %d processors.", processors);
- return processors;
-
- #endif /* __APPLE__, __FreeBSD__ */
-}
-
-pid_t pid_max = 32768;
-pid_t get_system_pid_max(void) {
- #ifdef __APPLE__
- // As we currently do not know a solution to query pid_max from the os
- // we use the number defined in bsd/sys/proc_internal.h in XNU sources
- pid_max = 99999;
- return pid_max;
- #elif __FreeBSD__
- int32_t tmp_pid_max;
-
- if (unlikely(GETSYSCTL_BY_NAME("kern.pid_max", tmp_pid_max))) {
- pid_max = 99999;
- error("Assuming system's maximum pid is %d.", pid_max);
- } else {
- pid_max = tmp_pid_max;
- }
-
- return pid_max;
- #else
-
- static char read = 0;
- if(unlikely(read)) return pid_max;
- read = 1;
-
- char filename[FILENAME_MAX + 1];
- snprintfz(filename, FILENAME_MAX, "%s/proc/sys/kernel/pid_max", netdata_configured_host_prefix);
-
- unsigned long long max = 0;
- if(read_single_number_file(filename, &max) != 0) {
- error("Cannot open file '%s'. Assuming system supports %d pids.", filename, pid_max);
- return pid_max;
- }
-
- if(!max) {
- error("Cannot parse file '%s'. Assuming system supports %d pids.", filename, pid_max);
- return pid_max;
- }
-
- pid_max = (pid_t) max;
- return pid_max;
-
- #endif /* __APPLE__, __FreeBSD__ */
-}
-
-unsigned int hz;
-void get_system_HZ(void) {
- long ticks;
-
- if ((ticks = sysconf(_SC_CLK_TCK)) == -1) {
- error("Cannot get system clock ticks");
- }
-
- hz = (unsigned int) ticks;
-}
-
/*
// poor man cycle counting
static unsigned long tsc;
@@ -1359,3 +1176,272 @@ int recursively_delete_dir(const char *path, const char *reason) {
return ret;
}
+
+static int is_virtual_filesystem(const char *path, char **reason) {
+
+#if defined(__APPLE__) || defined(__FreeBSD__)
+ (void)path;
+ (void)reason;
+#else
+ struct statfs stat;
+ // stat.f_fsid.__val[0] is a file system id
+ // stat.f_fsid.__val[1] is the inode
+ // so their combination uniquely identifies the file/dir
+
+ if (statfs(path, &stat) == -1) {
+ if(reason) *reason = "failed to statfs()";
+ return -1;
+ }
+
+ if(stat.f_fsid.__val[0] != 0 || stat.f_fsid.__val[1] != 0) {
+ errno = EINVAL;
+ if(reason) *reason = "is not a virtual file system";
+ return -1;
+ }
+#endif
+
+ return 0;
+}
+
+int verify_netdata_host_prefix() {
+ if(!netdata_configured_host_prefix)
+ netdata_configured_host_prefix = "";
+
+ if(!*netdata_configured_host_prefix)
+ return 0;
+
+ char buffer[FILENAME_MAX + 1];
+ char *path = netdata_configured_host_prefix;
+ char *reason = "unknown reason";
+ errno = 0;
+
+ struct stat sb;
+ if (stat(path, &sb) == -1) {
+ reason = "failed to stat()";
+ goto failed;
+ }
+
+ if((sb.st_mode & S_IFMT) != S_IFDIR) {
+ errno = EINVAL;
+ reason = "is not a directory";
+ goto failed;
+ }
+
+ path = buffer;
+ snprintfz(path, FILENAME_MAX, "%s/proc", netdata_configured_host_prefix);
+ if(is_virtual_filesystem(path, &reason) == -1)
+ goto failed;
+
+ snprintfz(path, FILENAME_MAX, "%s/sys", netdata_configured_host_prefix);
+ if(is_virtual_filesystem(path, &reason) == -1)
+ goto failed;
+
+ if(netdata_configured_host_prefix && *netdata_configured_host_prefix)
+ info("Using host prefix directory '%s'", netdata_configured_host_prefix);
+
+ return 0;
+
+failed:
+ error("Ignoring host prefix '%s': path '%s' %s", netdata_configured_host_prefix, path, reason);
+ netdata_configured_host_prefix = "";
+ return -1;
+}
+
+char *strdupz_path_subpath(const char *path, const char *subpath) {
+ if(unlikely(!path || !*path)) path = ".";
+ if(unlikely(!subpath)) subpath = "";
+
+ // skip trailing slashes in path
+ size_t len = strlen(path);
+ while(len > 0 && path[len - 1] == '/') len--;
+
+ // skip leading slashes in subpath
+ while(subpath[0] == '/') subpath++;
+
+ // if the last character in path is / and (there is a subpath or path is now empty)
+ // keep the trailing slash in path and remove the additional slash
+ char *slash = "/";
+ if(path[len] == '/' && (*subpath || len == 0)) {
+ slash = "";
+ len++;
+ }
+ else if(!*subpath) {
+ // there is no subpath
+ // no need for trailing slash
+ slash = "";
+ }
+
+ char buffer[FILENAME_MAX + 1];
+ snprintfz(buffer, FILENAME_MAX, "%.*s%s%s", (int)len, path, slash, subpath);
+ return strdupz(buffer);
+}
+
+int path_is_dir(const char *path, const char *subpath) {
+ char *s = strdupz_path_subpath(path, subpath);
+
+ size_t max_links = 100;
+
+ int is_dir = 0;
+ struct stat statbuf;
+ while(max_links-- && stat(s, &statbuf) == 0) {
+ if((statbuf.st_mode & S_IFMT) == S_IFDIR) {
+ is_dir = 1;
+ break;
+ }
+ else if((statbuf.st_mode & S_IFMT) == S_IFLNK) {
+ char buffer[FILENAME_MAX + 1];
+ ssize_t l = readlink(s, buffer, FILENAME_MAX);
+ if(l > 0) {
+ buffer[l] = '\0';
+ freez(s);
+ s = strdupz(buffer);
+ continue;
+ }
+ else {
+ is_dir = 0;
+ break;
+ }
+ }
+ else {
+ is_dir = 0;
+ break;
+ }
+ }
+
+ freez(s);
+ return is_dir;
+}
+
+int path_is_file(const char *path, const char *subpath) {
+ char *s = strdupz_path_subpath(path, subpath);
+
+ size_t max_links = 100;
+
+ int is_file = 0;
+ struct stat statbuf;
+ while(max_links-- && stat(s, &statbuf) == 0) {
+ if((statbuf.st_mode & S_IFMT) == S_IFREG) {
+ is_file = 1;
+ break;
+ }
+ else if((statbuf.st_mode & S_IFMT) == S_IFLNK) {
+ char buffer[FILENAME_MAX + 1];
+ ssize_t l = readlink(s, buffer, FILENAME_MAX);
+ if(l > 0) {
+ buffer[l] = '\0';
+ freez(s);
+ s = strdupz(buffer);
+ continue;
+ }
+ else {
+ is_file = 0;
+ break;
+ }
+ }
+ else {
+ is_file = 0;
+ break;
+ }
+ }
+
+ freez(s);
+ return is_file;
+}
+
+void recursive_config_double_dir_load(const char *user_path, const char *stock_path, const char *subpath, int (*callback)(const char *filename, void *data), void *data, size_t depth) {
+ if(depth > 3) {
+ error("CONFIG: Max directory depth reached while reading user path '%s', stock path '%s', subpath '%s'", user_path, stock_path, subpath);
+ return;
+ }
+
+ char *udir = strdupz_path_subpath(user_path, subpath);
+ char *sdir = strdupz_path_subpath(stock_path, subpath);
+
+ debug(D_HEALTH, "CONFIG traversing user-config directory '%s', stock config directory '%s'", udir, sdir);
+
+ DIR *dir = opendir(udir);
+ if (!dir) {
+ error("CONFIG cannot open user-config directory '%s'.", udir);
+ }
+ else {
+ struct dirent *de = NULL;
+ while((de = readdir(dir))) {
+ if(de->d_type == DT_DIR || de->d_type == DT_LNK) {
+ if( !de->d_name[0] ||
+ (de->d_name[0] == '.' && de->d_name[1] == '\0') ||
+ (de->d_name[0] == '.' && de->d_name[1] == '.' && de->d_name[2] == '\0')
+ ) {
+ debug(D_HEALTH, "CONFIG ignoring user-config directory '%s/%s'", udir, de->d_name);
+ continue;
+ }
+
+ if(path_is_dir(udir, de->d_name)) {
+ recursive_config_double_dir_load(udir, sdir, de->d_name, callback, data, depth + 1);
+ continue;
+ }
+ }
+
+ if(de->d_type == DT_REG || de->d_type == DT_LNK) {
+ size_t len = strlen(de->d_name);
+ if(path_is_file(udir, de->d_name) &&
+ len > 5 && !strcmp(&de->d_name[len - 5], ".conf")) {
+ char *filename = strdupz_path_subpath(udir, de->d_name);
+ callback(filename, data);
+ freez(filename);
+ }
+ else
+ debug(D_HEALTH, "CONFIG ignoring user-config file '%s/%s'", udir, de->d_name);
+ }
+ }
+
+ closedir(dir);
+ }
+
+ debug(D_HEALTH, "CONFIG traversing stock config directory '%s', user config directory '%s'", sdir, udir);
+
+ dir = opendir(sdir);
+ if (!dir) {
+ error("CONFIG cannot open stock config directory '%s'.", sdir);
+ }
+ else {
+ struct dirent *de = NULL;
+ while((de = readdir(dir))) {
+ if(de->d_type == DT_DIR || de->d_type == DT_LNK) {
+ if( !de->d_name[0] ||
+ (de->d_name[0] == '.' && de->d_name[1] == '\0') ||
+ (de->d_name[0] == '.' && de->d_name[1] == '.' && de->d_name[2] == '\0')
+ ) {
+ debug(D_HEALTH, "CONFIG ignoring stock config directory '%s/%s'", sdir, de->d_name);
+ continue;
+ }
+
+ if(path_is_dir(sdir, de->d_name)) {
+ // we recurse in stock subdirectory, only when there is no corresponding
+ // user subdirectory - to avoid reading the files twice
+
+ if(!path_is_dir(udir, de->d_name))
+ recursive_config_double_dir_load(udir, sdir, de->d_name, callback, data, depth + 1);
+
+ continue;
+ }
+ }
+
+ if(de->d_type == DT_REG || de->d_type == DT_LNK) {
+ size_t len = strlen(de->d_name);
+ if(path_is_file(sdir, de->d_name) && !path_is_file(udir, de->d_name) &&
+ len > 5 && !strcmp(&de->d_name[len - 5], ".conf")) {
+ char *filename = strdupz_path_subpath(sdir, de->d_name);
+ callback(filename, data);
+ freez(filename);
+ }
+ else
+ debug(D_HEALTH, "CONFIG ignoring stock config file '%s/%s'", sdir, de->d_name);
+ }
+ }
+
+ closedir(dir);
+ }
+
+ freez(udir);
+ freez(sdir);
+}
diff --git a/src/common.h b/libnetdata/libnetdata.h
index 15fc50a6a..0bac3dc8f 100644
--- a/src/common.h
+++ b/libnetdata/libnetdata.h
@@ -1,10 +1,16 @@
-#ifndef NETDATA_COMMON_H
-#define NETDATA_COMMON_H 1
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#ifndef NETDATA_LIB_H
+#define NETDATA_LIB_H 1
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
+#define OS_LINUX 1
+#define OS_FREEBSD 2
+#define OS_MACOS 3
+
// ----------------------------------------------------------------------------
// system include files for all netdata C programs
@@ -14,9 +20,9 @@
#if defined(HAVE_JEMALLOC_JEMALLOC_H)
#include <jemalloc/jemalloc.h>
-#else
+#else // !defined(HAVE_JEMALLOC_JEMALLOC_H)
#include <malloc.h>
-#endif
+#endif // !defined(HAVE_JEMALLOC_JEMALLOC_H)
#elif defined(ENABLE_TCMALLOC)
@@ -28,7 +34,18 @@
#include <malloc.h>
#endif /* __FreeBSD__ || __APPLE__ */
-#endif
+#endif /* !defined(ENABLE_JEMALLOC) && !defined(ENABLE_TCMALLOC) */
+
+// ----------------------------------------------------------------------------
+
+#if defined(__FreeBSD__)
+#include <pthread_np.h>
+#define NETDATA_OS_TYPE "freebsd"
+#elif defined(__APPLE__)
+#define NETDATA_OS_TYPE "macos"
+#else
+#define NETDATA_OS_TYPE "linux"
+#endif /* __FreeBSD__, __APPLE__*/
#include <pthread.h>
#include <errno.h>
@@ -42,41 +59,20 @@
#include <arpa/inet.h>
#include <netinet/tcp.h>
#include <sys/ioctl.h>
-
-#ifdef HAVE_NETINET_IN_H
-#include <netinet/in.h>
-#endif
-
-#ifdef HAVE_RESOLV_H
-#include <resolv.h>
-#endif
-
+#include <libgen.h>
#include <dirent.h>
#include <fcntl.h>
#include <getopt.h>
#include <grp.h>
#include <pwd.h>
#include <locale.h>
-
-#ifdef HAVE_NETDB_H
-#include <netdb.h>
-#endif
-
#include <net/if.h>
-
#include <poll.h>
#include <signal.h>
#include <syslog.h>
#include <sys/mman.h>
-
-#ifdef HAVE_SYS_PRCTL_H
-#include <sys/prctl.h>
-#endif
-
#include <sys/resource.h>
#include <sys/socket.h>
-#include <sys/stat.h>
-#include <sys/statvfs.h>
#include <sys/syscall.h>
#include <sys/time.h>
#include <sys/types.h>
@@ -86,6 +82,42 @@
#include <unistd.h>
#include <uuid/uuid.h>
+#ifdef HAVE_NETINET_IN_H
+#include <netinet/in.h>
+#endif
+
+#ifdef HAVE_RESOLV_H
+#include <resolv.h>
+#endif
+
+#ifdef HAVE_NETDB_H
+#include <netdb.h>
+#endif
+
+#ifdef HAVE_SYS_PRCTL_H
+#include <sys/prctl.h>
+#endif
+
+#ifdef HAVE_SYS_STAT_H
+#include <sys/stat.h>
+#endif
+
+#ifdef HAVE_SYS_VFS_H
+#include <sys/vfs.h>
+#endif
+
+#ifdef HAVE_SYS_STATFS_H
+#include <sys/statfs.h>
+#endif
+
+#ifdef HAVE_SYS_MOUNT_H
+#include <sys/mount.h>
+#endif
+
+#ifdef HAVE_SYS_STATVFS_H
+#include <sys/statvfs.h>
+#endif
+
// #1408
#ifdef MAJOR_IN_MKDEV
#include <sys/mkdev.h>
@@ -94,10 +126,6 @@
#include <sys/sysmacros.h>
#endif
-/*
-#include <mntent.h>
-*/
-
#ifdef STORAGE_WITH_MATH
#include <math.h>
#include <float.h>
@@ -117,27 +145,6 @@
#include <sys/capability.h>
#endif
-// ----------------------------------------------------------------------------
-// netdata chart priorities
-
-// This is a work in progress - to scope is to collect here all chart priorities.
-// These should be based on the CONTEXT of the charts + the chart id when needed
-// - for each SECTION +1000 (or +X000 for big sections)
-// - for each FAMILY +100
-// - for each CHART +10
-
-// Memory Section - 1xxx
-#define NETDATA_CHART_PRIO_MEM_SYSTEM 1000
-#define NETDATA_CHART_PRIO_MEM_SYSTEM_AVAILABLE 1010
-#define NETDATA_CHART_PRIO_MEM_SYSTEM_COMMITTED 1020
-#define NETDATA_CHART_PRIO_MEM_SYSTEM_PGFAULTS 1030
-#define NETDATA_CHART_PRIO_MEM_KERNEL 1100
-#define NETDATA_CHART_PRIO_MEM_SLAB 1200
-#define NETDATA_CHART_PRIO_MEM_HUGEPAGES 1250
-#define NETDATA_CHART_PRIO_MEM_KSM 1300
-#define NETDATA_CHART_PRIO_MEM_NUMA 1400
-#define NETDATA_CHART_PRIO_MEM_HW 1500
-
// ----------------------------------------------------------------------------
// netdata common definitions
@@ -197,92 +204,6 @@
#define GUID_LEN 36
-// ----------------------------------------------------------------------------
-// netdata include files
-
-#include "clocks.h"
-#include "log.h"
-#include "threads.h"
-#include "locks.h"
-#include "simple_pattern.h"
-#include "avl.h"
-#include "global_statistics.h"
-#include "storage_number.h"
-#include "web_buffer.h"
-#include "web_buffer_svg.h"
-#include "url.h"
-#include "popen.h"
-
-#include "procfile.h"
-#include "appconfig.h"
-#include "dictionary.h"
-#include "proc_self_mountinfo.h"
-#include "plugin_checks.h"
-#include "plugin_idlejitter.h"
-#include "plugin_nfacct.h"
-
-#if defined(__FreeBSD__)
-#include <pthread_np.h>
-#include "plugin_freebsd.h"
-#define NETDATA_OS_TYPE "freebsd"
-#elif defined(__APPLE__)
-#include "plugin_macos.h"
-#define NETDATA_OS_TYPE "macos"
-#else
-#include "plugin_proc.h"
-#include "plugin_proc_diskspace.h"
-#define NETDATA_OS_TYPE "linux"
-#endif /* __FreeBSD__, __APPLE__*/
-
-typedef enum rrdcalc_status {
- RRDCALC_STATUS_REMOVED = -2,
- RRDCALC_STATUS_UNDEFINED = -1,
- RRDCALC_STATUS_UNINITIALIZED = 0,
- RRDCALC_STATUS_CLEAR = 1,
- RRDCALC_STATUS_RAISED = 2,
- RRDCALC_STATUS_WARNING = 3,
- RRDCALC_STATUS_CRITICAL = 4
-} RRDCALC_STATUS;
-
-#include "eval.h"
-#include "health.h"
-
-#include "statistical.h"
-#include "socket.h"
-#include "rrd.h"
-#include "plugin_tc.h"
-#include "plugins_d.h"
-#include "statsd.h"
-#include "rrd2json.h"
-#include "rrd2json_api_old.h"
-#include "web_client.h"
-#include "web_server.h"
-#include "registry.h"
-#include "signals.h"
-#include "daemon.h"
-#include "main.h"
-#include "unit_test.h"
-#include "ipc.h"
-#include "backends.h"
-#include "backend_prometheus.h"
-#include "inlined.h"
-#include "adaptive_resortable_list.h"
-#include "rrdpush.h"
-#include "web_api_v1.h"
-#include "web_api_old.h"
-
-extern char *netdata_configured_hostname;
-extern char *netdata_configured_config_dir;
-extern char *netdata_configured_log_dir;
-extern char *netdata_configured_plugins_dir_base;
-extern char *netdata_configured_plugins_dir;
-extern char *netdata_configured_web_dir;
-extern char *netdata_configured_cache_dir;
-extern char *netdata_configured_varlib_dir;
-extern char *netdata_configured_home_dir;
-extern char *netdata_configured_host_prefix;
-extern char *netdata_configured_timezone;
-
extern void netdata_fix_chart_id(char *s);
extern void netdata_fix_chart_name(char *s);
@@ -296,6 +217,7 @@ extern int snprintfz(char *dst, size_t n, const char *fmt, ...) PRINTFLIKE(3, 4
// memory allocation functions that handle failures
#ifdef NETDATA_LOG_ALLOCATIONS
+extern __thread size_t log_thread_memory_allocations;
#define strdupz(s) strdupz_int(__FILE__, __FUNCTION__, __LINE__, s)
#define callocz(nmemb, size) callocz_int(__FILE__, __FUNCTION__, __LINE__, nmemb, size)
#define mallocz(size) mallocz_int(__FILE__, __FUNCTION__, __LINE__, size)
@@ -307,13 +229,13 @@ extern void *callocz_int(const char *file, const char *function, const unsigned
extern void *mallocz_int(const char *file, const char *function, const unsigned long line, size_t size);
extern void *reallocz_int(const char *file, const char *function, const unsigned long line, void *ptr, size_t size);
extern void freez_int(const char *file, const char *function, const unsigned long line, void *ptr);
-#else
+#else // NETDATA_LOG_ALLOCATIONS
extern char *strdupz(const char *s) MALLOCLIKE NEVERNULL;
extern void *callocz(size_t nmemb, size_t size) MALLOCLIKE NEVERNULL;
extern void *mallocz(size_t size) MALLOCLIKE NEVERNULL;
extern void *reallocz(void *ptr, size_t size) MALLOCLIKE NEVERNULL;
extern void freez(void *ptr);
-#endif
+#endif // NETDATA_LOG_ALLOCATIONS
extern void json_escape_string(char *dst, const char *src, size_t size);
extern void json_fix_string(char *s);
@@ -327,19 +249,9 @@ extern struct rlimit rlimit_nofile;
extern int enable_ksm;
-extern int sleep_usec(usec_t usec);
-
extern char *fgets_trim_len(char *buf, size_t buf_size, FILE *fp, size_t *len);
-extern int processors;
-extern long get_system_cpus(void);
-
-extern pid_t pid_max;
-extern pid_t get_system_pid_max(void);
-
-/* Number of ticks per second */
-extern unsigned int hz;
-extern void get_system_HZ(void);
+extern int verify_netdata_host_prefix();
extern int recursively_delete_dir(const char *path, const char *reason);
@@ -348,6 +260,18 @@ extern const char *os_type;
extern const char *program_version;
+extern char *strdupz_path_subpath(const char *path, const char *subpath);
+extern int path_is_dir(const char *path, const char *subpath);
+extern int path_is_file(const char *path, const char *subpath);
+extern void recursive_config_double_dir_load(
+ const char *user_path
+ , const char *stock_path
+ , const char *subpath
+ , int (*callback)(const char *filename, void *data)
+ , void *data
+ , size_t depth
+);
+
/* fix for alpine linux */
#ifndef RUSAGE_THREAD
#ifdef RUSAGE_CHILDREN
@@ -357,4 +281,28 @@ extern const char *program_version;
#define BITS_IN_A_KILOBIT 1000
-#endif /* NETDATA_COMMON_H */
+
+extern void netdata_cleanup_and_exit(int ret) NORETURN;
+extern char *netdata_configured_host_prefix;
+
+#include "os.h"
+#include "storage_number/storage_number.h"
+#include "threads/threads.h"
+#include "buffer/buffer.h"
+#include "locks/locks.h"
+#include "avl/avl.h"
+#include "inlined.h"
+#include "clocks/clocks.h"
+#include "popen/popen.h"
+#include "simple_pattern/simple_pattern.h"
+#include "socket/socket.h"
+#include "config/appconfig.h"
+#include "log/log.h"
+#include "procfile/procfile.h"
+#include "dictionary/dictionary.h"
+#include "eval/eval.h"
+#include "statistical/statistical.h"
+#include "adaptive_resortable_list/adaptive_resortable_list.h"
+#include "url/url.h"
+
+#endif // NETDATA_LIB_H
diff --git a/libnetdata/locks/Makefile.am b/libnetdata/locks/Makefile.am
new file mode 100644
index 000000000..1cb69ed99
--- /dev/null
+++ b/libnetdata/locks/Makefile.am
@@ -0,0 +1,9 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+AUTOMAKE_OPTIONS = subdir-objects
+MAINTAINERCLEANFILES = $(srcdir)/Makefile.in
+
+
+dist_noinst_DATA = \
+ README.md \
+ $(NULL)
diff --git a/libnetdata/locks/Makefile.in b/libnetdata/locks/Makefile.in
new file mode 100644
index 000000000..38520f78e
--- /dev/null
+++ b/libnetdata/locks/Makefile.in
@@ -0,0 +1,464 @@
+# Makefile.in generated by automake 1.14.1 from Makefile.am.
+# @configure_input@
+
+# Copyright (C) 1994-2013 Free Software Foundation, Inc.
+
+# This Makefile.in is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+# PARTICULAR PURPOSE.
+
+@SET_MAKE@
+
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+VPATH = @srcdir@
+am__is_gnu_make = test -n '$(MAKEFILE_LIST)' && test -n '$(MAKELEVEL)'
+am__make_running_with_option = \
+ case $${target_option-} in \
+ ?) ;; \
+ *) echo "am__make_running_with_option: internal error: invalid" \
+ "target option '$${target_option-}' specified" >&2; \
+ exit 1;; \
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diff --git a/libnetdata/locks/README.md b/libnetdata/locks/README.md
new file mode 100644
index 000000000..e69de29bb
--- /dev/null
+++ b/libnetdata/locks/README.md
diff --git a/src/locks.c b/libnetdata/locks/locks.c
index c5b42c921..91e226902 100644
--- a/src/locks.c
+++ b/libnetdata/locks/locks.c
@@ -1,4 +1,6 @@
-#include "common.h"
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "../libnetdata.h"
// ----------------------------------------------------------------------------
// automatic thread cancelability management, based on locks
@@ -82,6 +84,7 @@ int __netdata_mutex_unlock(netdata_mutex_t *mutex) {
int netdata_mutex_init_debug( const char *file, const char *function, const unsigned long line, netdata_mutex_t *mutex) {
usec_t start = 0;
+ (void)start;
if(unlikely(debug_flags & D_LOCKS)) {
start = now_boottime_usec();
@@ -97,6 +100,7 @@ int netdata_mutex_init_debug( const char *file, const char *function, const unsi
int netdata_mutex_lock_debug( const char *file, const char *function, const unsigned long line, netdata_mutex_t *mutex) {
usec_t start = 0;
+ (void)start;
if(unlikely(debug_flags & D_LOCKS)) {
start = now_boottime_usec();
@@ -112,6 +116,7 @@ int netdata_mutex_lock_debug( const char *file, const char *function, const unsi
int netdata_mutex_trylock_debug( const char *file, const char *function, const unsigned long line, netdata_mutex_t *mutex) {
usec_t start = 0;
+ (void)start;
if(unlikely(debug_flags & D_LOCKS)) {
start = now_boottime_usec();
@@ -127,6 +132,7 @@ int netdata_mutex_trylock_debug( const char *file, const char *function, const u
int netdata_mutex_unlock_debug( const char *file, const char *function, const unsigned long line, netdata_mutex_t *mutex) {
usec_t start = 0;
+ (void)start;
if(unlikely(debug_flags & D_LOCKS)) {
start = now_boottime_usec();
@@ -215,6 +221,7 @@ int __netdata_rwlock_trywrlock(netdata_rwlock_t *rwlock) {
int netdata_rwlock_destroy_debug( const char *file, const char *function, const unsigned long line, netdata_rwlock_t *rwlock) {
usec_t start = 0;
+ (void)start;
if(unlikely(debug_flags & D_LOCKS)) {
start = now_boottime_usec();
@@ -230,6 +237,7 @@ int netdata_rwlock_destroy_debug( const char *file, const char *function, const
int netdata_rwlock_init_debug( const char *file, const char *function, const unsigned long line, netdata_rwlock_t *rwlock) {
usec_t start = 0;
+ (void)start;
if(unlikely(debug_flags & D_LOCKS)) {
start = now_boottime_usec();
@@ -245,6 +253,7 @@ int netdata_rwlock_init_debug( const char *file, const char *function, const uns
int netdata_rwlock_rdlock_debug( const char *file, const char *function, const unsigned long line, netdata_rwlock_t *rwlock) {
usec_t start = 0;
+ (void)start;
if(unlikely(debug_flags & D_LOCKS)) {
start = now_boottime_usec();
@@ -260,6 +269,7 @@ int netdata_rwlock_rdlock_debug( const char *file, const char *function, const u
int netdata_rwlock_wrlock_debug( const char *file, const char *function, const unsigned long line, netdata_rwlock_t *rwlock) {
usec_t start = 0;
+ (void)start;
if(unlikely(debug_flags & D_LOCKS)) {
start = now_boottime_usec();
@@ -275,6 +285,7 @@ int netdata_rwlock_wrlock_debug( const char *file, const char *function, const u
int netdata_rwlock_unlock_debug( const char *file, const char *function, const unsigned long line, netdata_rwlock_t *rwlock) {
usec_t start = 0;
+ (void)start;
if(unlikely(debug_flags & D_LOCKS)) {
start = now_boottime_usec();
@@ -290,6 +301,7 @@ int netdata_rwlock_unlock_debug( const char *file, const char *function, const u
int netdata_rwlock_tryrdlock_debug( const char *file, const char *function, const unsigned long line, netdata_rwlock_t *rwlock) {
usec_t start = 0;
+ (void)start;
if(unlikely(debug_flags & D_LOCKS)) {
start = now_boottime_usec();
@@ -305,6 +317,7 @@ int netdata_rwlock_tryrdlock_debug( const char *file, const char *function, cons
int netdata_rwlock_trywrlock_debug( const char *file, const char *function, const unsigned long line, netdata_rwlock_t *rwlock) {
usec_t start = 0;
+ (void)start;
if(unlikely(debug_flags & D_LOCKS)) {
start = now_boottime_usec();
diff --git a/src/locks.h b/libnetdata/locks/locks.h
index 36962fef2..850dd7ebc 100644
--- a/src/locks.h
+++ b/libnetdata/locks/locks.h
@@ -1,5 +1,9 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
#ifndef NETDATA_LOCKS_H
-#define NETDATA_LOCKS_H
+#define NETDATA_LOCKS_H 1
+
+#include "../libnetdata.h"
typedef pthread_mutex_t netdata_mutex_t;
#define NETDATA_MUTEX_INITIALIZER PTHREAD_MUTEX_INITIALIZER
diff --git a/libnetdata/log/Makefile.am b/libnetdata/log/Makefile.am
new file mode 100644
index 000000000..1cb69ed99
--- /dev/null
+++ b/libnetdata/log/Makefile.am
@@ -0,0 +1,9 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+AUTOMAKE_OPTIONS = subdir-objects
+MAINTAINERCLEANFILES = $(srcdir)/Makefile.in
+
+
+dist_noinst_DATA = \
+ README.md \
+ $(NULL)
diff --git a/libnetdata/log/Makefile.in b/libnetdata/log/Makefile.in
new file mode 100644
index 000000000..abf812b67
--- /dev/null
+++ b/libnetdata/log/Makefile.in
@@ -0,0 +1,464 @@
+# Makefile.in generated by automake 1.14.1 from Makefile.am.
+# @configure_input@
+
+# Copyright (C) 1994-2013 Free Software Foundation, Inc.
+
+# This Makefile.in is free software; the Free Software Foundation
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diff --git a/libnetdata/log/README.md b/libnetdata/log/README.md
new file mode 100644
index 000000000..e69de29bb
--- /dev/null
+++ b/libnetdata/log/README.md
diff --git a/src/log.c b/libnetdata/log/log.c
index edb4482a0..198e98bd9 100644
--- a/src/log.c
+++ b/libnetdata/log/log.c
@@ -1,4 +1,6 @@
-#include "common.h"
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "../libnetdata.h"
int web_server_is_multithreaded = 1;
@@ -56,7 +58,7 @@ static inline void log_unlock() {
netdata_mutex_unlock(&log_mutex);
}
-int open_log_file(int fd, FILE **fp, const char *filename, int *enabled_syslog) {
+static FILE *open_log_file(int fd, FILE *fp, const char *filename, int *enabled_syslog, int is_stdaccess, int *fd_ptr) {
int f, devnull = 0;
if(!filename || !*filename || !strcmp(filename, "none") || !strcmp(filename, "/dev/null")) {
@@ -75,8 +77,10 @@ int open_log_file(int fd, FILE **fp, const char *filename, int *enabled_syslog)
// don't do anything if the user is willing
// to have the standard one
if(!strcmp(filename, "system")) {
- if(fd != -1 && fp != &stdaccess)
- return fd;
+ if(fd != -1 && !is_stdaccess) {
+ if(fd_ptr) *fd_ptr = fd;
+ return fp;
+ }
filename = "stderr";
}
@@ -91,19 +95,20 @@ int open_log_file(int fd, FILE **fp, const char *filename, int *enabled_syslog)
f = open(filename, O_WRONLY | O_APPEND | O_CREAT, 0664);
if(f == -1) {
error("Cannot open file '%s'. Leaving %d to its default.", filename, fd);
- return fd;
+ if(fd_ptr) *fd_ptr = fd;
+ return fp;
}
}
- if(devnull && fp == &stdaccess) {
- fd = -1;
- *fp = NULL;
- }
-
// if there is a level-2 file pointer
// flush it before switching the level-1 fds
- if(fp && *fp)
- fflush(*fp);
+ if(fp)
+ fflush(fp);
+
+ if(devnull && is_stdaccess) {
+ fd = -1;
+ fp = NULL;
+ }
if(fd != f && fd != -1) {
// it automatically closes
@@ -111,57 +116,61 @@ int open_log_file(int fd, FILE **fp, const char *filename, int *enabled_syslog)
if (t == -1) {
error("Cannot dup2() new fd %d to old fd %d for '%s'", f, fd, filename);
close(f);
- return fd;
+ if(fd_ptr) *fd_ptr = fd;
+ return fp;
}
// info("dup2() new fd %d to old fd %d for '%s'", f, fd, filename);
close(f);
}
else fd = f;
- if(fp && !*fp) {
- *fp = fdopen(fd, "a");
- if (!*fp)
+ if(!fp) {
+ fp = fdopen(fd, "a");
+ if (!fp)
error("Cannot fdopen() fd %d ('%s')", fd, filename);
else {
- if (setvbuf(*fp, NULL, _IOLBF, 0) != 0)
+ if (setvbuf(fp, NULL, _IOLBF, 0) != 0)
error("Cannot set line buffering on fd %d ('%s')", fd, filename);
}
}
- return fd;
+ if(fd_ptr) *fd_ptr = fd;
+ return fp;
}
void reopen_all_log_files() {
if(stdout_filename)
- open_log_file(STDOUT_FILENO, (FILE **)&stdout, stdout_filename, &output_log_syslog);
+ open_log_file(STDOUT_FILENO, stdout, stdout_filename, &output_log_syslog, 0, NULL);
if(stderr_filename)
- open_log_file(STDERR_FILENO, (FILE **)&stderr, stderr_filename, &error_log_syslog);
+ open_log_file(STDERR_FILENO, stderr, stderr_filename, &error_log_syslog, 0, NULL);
if(stdaccess_filename)
- stdaccess_fd = open_log_file(stdaccess_fd, (FILE **)&stdaccess, stdaccess_filename, &access_log_syslog);
+ stdaccess = open_log_file(stdaccess_fd, stdaccess, stdaccess_filename, &access_log_syslog, 1, &stdaccess_fd);
}
void open_all_log_files() {
// disable stdin
- open_log_file(STDIN_FILENO, (FILE **)&stdin, "/dev/null", NULL);
+ open_log_file(STDIN_FILENO, stdin, "/dev/null", NULL, 0, NULL);
- open_log_file(STDOUT_FILENO, (FILE **)&stdout, stdout_filename, &output_log_syslog);
- open_log_file(STDERR_FILENO, (FILE **)&stderr, stderr_filename, &error_log_syslog);
- stdaccess_fd = open_log_file(stdaccess_fd, (FILE **)&stdaccess, stdaccess_filename, &access_log_syslog);
+ open_log_file(STDOUT_FILENO, stdout, stdout_filename, &output_log_syslog, 0, NULL);
+ open_log_file(STDERR_FILENO, stderr, stderr_filename, &error_log_syslog, 0, NULL);
+ stdaccess = open_log_file(stdaccess_fd, stdaccess, stdaccess_filename, &access_log_syslog, 1, &stdaccess_fd);
}
// ----------------------------------------------------------------------------
// error log throttling
-time_t error_log_throttle_period_backup = 0;
time_t error_log_throttle_period = 1200;
unsigned long error_log_errors_per_period = 200;
+unsigned long error_log_errors_per_period_backup = 0;
int error_log_limit(int reset) {
static time_t start = 0;
static unsigned long counter = 0, prevented = 0;
+ // fprintf(stderr, "FLOOD: counter=%lu, allowed=%lu, backup=%lu, period=%llu\n", counter, error_log_errors_per_period, error_log_errors_per_period_backup, (unsigned long long)error_log_throttle_period);
+
// do not throttle if the period is 0
if(error_log_throttle_period == 0)
return 0;
@@ -181,7 +190,7 @@ int error_log_limit(int reset) {
if(prevented) {
char date[LOG_DATE_LENGTH];
log_date(date, LOG_DATE_LENGTH);
- fprintf(stderr, "%s: %s Resetting logging for process '%s' (prevented %lu logs in the last %ld seconds).\n"
+ fprintf(stderr, "%s: %s LOG FLOOD PROTECTION reset for process '%s' (prevented %lu logs in the last %ld seconds).\n"
, date
, program_name
, program_name
@@ -202,7 +211,7 @@ int error_log_limit(int reset) {
if(prevented) {
char date[LOG_DATE_LENGTH];
log_date(date, LOG_DATE_LENGTH);
- fprintf(stderr, "%s: %s Resuming logging from process '%s' (prevented %lu logs in the last %ld seconds).\n"
+ fprintf(stderr, "%s: %s LOG FLOOD PROTECTION resuming logging from process '%s' (prevented %lu logs in the last %ld seconds).\n"
, date
, program_name
, program_name
@@ -224,7 +233,7 @@ int error_log_limit(int reset) {
if(!prevented) {
char date[LOG_DATE_LENGTH];
log_date(date, LOG_DATE_LENGTH);
- fprintf(stderr, "%s: %s Too many logs (%lu logs in %ld seconds, threshold is set to %lu logs in %ld seconds). Preventing more logs from process '%s' for %ld seconds.\n"
+ fprintf(stderr, "%s: %s LOG FLOOD PROTECTION too many logs (%lu logs in %ld seconds, threshold is set to %lu logs in %ld seconds). Preventing more logs from process '%s' for %ld seconds.\n"
, date
, program_name
, counter
diff --git a/src/log.h b/libnetdata/log/log.h
index 81c85481b..48e1599a7 100644
--- a/src/log.h
+++ b/libnetdata/log/log.h
@@ -1,6 +1,10 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
#ifndef NETDATA_LOG_H
#define NETDATA_LOG_H 1
+#include "../libnetdata.h"
+
#define D_WEB_BUFFER 0x0000000000000001
#define D_WEB_CLIENT 0x0000000000000002
#define D_LISTENER 0x0000000000000004
@@ -55,8 +59,8 @@ extern int access_log_syslog;
extern int error_log_syslog;
extern int output_log_syslog;
-extern time_t error_log_throttle_period, error_log_throttle_period_backup;
-extern unsigned long error_log_errors_per_period;
+extern time_t error_log_throttle_period;
+extern unsigned long error_log_errors_per_period, error_log_errors_per_period_backup;
extern int error_log_limit(int reset);
extern void open_all_log_files();
@@ -64,8 +68,11 @@ extern void reopen_all_log_files();
static inline void debug_dummy(void) {}
-#define error_log_limit_reset() do { error_log_throttle_period = error_log_throttle_period_backup; error_log_limit(1); } while(0)
-#define error_log_limit_unlimited() do { error_log_throttle_period = 0; } while(0)
+#define error_log_limit_reset() do { error_log_errors_per_period = error_log_errors_per_period_backup; error_log_limit(1); } while(0)
+#define error_log_limit_unlimited() do { \
+ error_log_limit_reset(); \
+ error_log_errors_per_period = ((error_log_errors_per_period_backup * 10) < 10000) ? 10000 : (error_log_errors_per_period_backup * 10); \
+ } while(0)
#ifdef NETDATA_INTERNAL_CHECKS
#define debug(type, args...) do { if(unlikely(debug_flags & type)) debug_int(__FILE__, __FUNCTION__, __LINE__, ##args); } while(0)
diff --git a/libnetdata/os.c b/libnetdata/os.c
new file mode 100644
index 000000000..0248eb627
--- /dev/null
+++ b/libnetdata/os.c
@@ -0,0 +1,218 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "os.h"
+
+// ----------------------------------------------------------------------------
+// system functions
+// to retrieve settings of the system
+
+int processors = 1;
+long get_system_cpus(void) {
+ processors = 1;
+
+#ifdef __APPLE__
+ int32_t tmp_processors;
+
+ if (unlikely(GETSYSCTL_BY_NAME("hw.logicalcpu", tmp_processors))) {
+ error("Assuming system has %d processors.", processors);
+ } else {
+ processors = tmp_processors;
+ }
+
+ return processors;
+#elif __FreeBSD__
+ int32_t tmp_processors;
+
+ if (unlikely(GETSYSCTL_BY_NAME("hw.ncpu", tmp_processors))) {
+ error("Assuming system has %d processors.", processors);
+ } else {
+ processors = tmp_processors;
+ }
+
+ return processors;
+#else
+
+ char filename[FILENAME_MAX + 1];
+ snprintfz(filename, FILENAME_MAX, "%s/proc/stat", netdata_configured_host_prefix);
+
+ procfile *ff = procfile_open(filename, NULL, PROCFILE_FLAG_DEFAULT);
+ if(!ff) {
+ error("Cannot open file '%s'. Assuming system has %d processors.", filename, processors);
+ return processors;
+ }
+
+ ff = procfile_readall(ff);
+ if(!ff) {
+ error("Cannot open file '%s'. Assuming system has %d processors.", filename, processors);
+ return processors;
+ }
+
+ processors = 0;
+ unsigned int i;
+ for(i = 0; i < procfile_lines(ff); i++) {
+ if(!procfile_linewords(ff, i)) continue;
+
+ if(strncmp(procfile_lineword(ff, i, 0), "cpu", 3) == 0) processors++;
+ }
+ processors--;
+ if(processors < 1) processors = 1;
+
+ procfile_close(ff);
+
+ debug(D_SYSTEM, "System has %d processors.", processors);
+ return processors;
+
+#endif /* __APPLE__, __FreeBSD__ */
+}
+
+pid_t pid_max = 32768;
+pid_t get_system_pid_max(void) {
+#ifdef __APPLE__
+ // As we currently do not know a solution to query pid_max from the os
+ // we use the number defined in bsd/sys/proc_internal.h in XNU sources
+ pid_max = 99999;
+ return pid_max;
+#elif __FreeBSD__
+ int32_t tmp_pid_max;
+
+ if (unlikely(GETSYSCTL_BY_NAME("kern.pid_max", tmp_pid_max))) {
+ pid_max = 99999;
+ error("Assuming system's maximum pid is %d.", pid_max);
+ } else {
+ pid_max = tmp_pid_max;
+ }
+
+ return pid_max;
+#else
+
+ static char read = 0;
+ if(unlikely(read)) return pid_max;
+ read = 1;
+
+ char filename[FILENAME_MAX + 1];
+ snprintfz(filename, FILENAME_MAX, "%s/proc/sys/kernel/pid_max", netdata_configured_host_prefix);
+
+ unsigned long long max = 0;
+ if(read_single_number_file(filename, &max) != 0) {
+ error("Cannot open file '%s'. Assuming system supports %d pids.", filename, pid_max);
+ return pid_max;
+ }
+
+ if(!max) {
+ error("Cannot parse file '%s'. Assuming system supports %d pids.", filename, pid_max);
+ return pid_max;
+ }
+
+ pid_max = (pid_t) max;
+ return pid_max;
+
+#endif /* __APPLE__, __FreeBSD__ */
+}
+
+unsigned int system_hz;
+void get_system_HZ(void) {
+ long ticks;
+
+ if ((ticks = sysconf(_SC_CLK_TCK)) == -1) {
+ error("Cannot get system clock ticks");
+ }
+
+ system_hz = (unsigned int) ticks;
+}
+
+// =====================================================================================================================
+// FreeBSD
+
+#if (TARGET_OS == OS_FREEBSD)
+
+int getsysctl_by_name(const char *name, void *ptr, size_t len) {
+ size_t nlen = len;
+
+ if (unlikely(sysctlbyname(name, ptr, &nlen, NULL, 0) == -1)) {
+ error("FREEBSD: sysctl(%s...) failed: %s", name, strerror(errno));
+ return 1;
+ }
+ if (unlikely(nlen != len)) {
+ error("FREEBSD: sysctl(%s...) expected %lu, got %lu", name, (unsigned long)len, (unsigned long)nlen);
+ return 1;
+ }
+ return 0;
+}
+
+int getsysctl_simple(const char *name, int *mib, size_t miblen, void *ptr, size_t len) {
+ size_t nlen = len;
+
+ if (unlikely(!mib[0]))
+ if (unlikely(getsysctl_mib(name, mib, miblen)))
+ return 1;
+
+ if (unlikely(sysctl(mib, miblen, ptr, &nlen, NULL, 0) == -1)) {
+ error("FREEBSD: sysctl(%s...) failed: %s", name, strerror(errno));
+ return 1;
+ }
+ if (unlikely(nlen != len)) {
+ error("FREEBSD: sysctl(%s...) expected %lu, got %lu", name, (unsigned long)len, (unsigned long)nlen);
+ return 1;
+ }
+
+ return 0;
+}
+
+int getsysctl(const char *name, int *mib, size_t miblen, void *ptr, size_t *len) {
+ size_t nlen = *len;
+
+ if (unlikely(!mib[0]))
+ if (unlikely(getsysctl_mib(name, mib, miblen)))
+ return 1;
+
+ if (unlikely(sysctl(mib, miblen, ptr, len, NULL, 0) == -1)) {
+ error("FREEBSD: sysctl(%s...) failed: %s", name, strerror(errno));
+ return 1;
+ }
+ if (unlikely(ptr != NULL && nlen != *len)) {
+ error("FREEBSD: sysctl(%s...) expected %lu, got %lu", name, (unsigned long)*len, (unsigned long)nlen);
+ return 1;
+ }
+
+ return 0;
+}
+
+int getsysctl_mib(const char *name, int *mib, size_t len) {
+ size_t nlen = len;
+
+ if (unlikely(sysctlnametomib(name, mib, &nlen) == -1)) {
+ error("FREEBSD: sysctl(%s...) failed: %s", name, strerror(errno));
+ return 1;
+ }
+ if (unlikely(nlen != len)) {
+ error("FREEBSD: sysctl(%s...) expected %lu, got %lu", name, (unsigned long)len, (unsigned long)nlen);
+ return 1;
+ }
+ return 0;
+}
+
+
+#endif
+
+
+// =====================================================================================================================
+// MacOS
+
+#if (TARGET_OS == OS_MACOS)
+
+int getsysctl_by_name(const char *name, void *ptr, size_t len) {
+ size_t nlen = len;
+
+ if (unlikely(sysctlbyname(name, ptr, &nlen, NULL, 0) == -1)) {
+ error("MACOS: sysctl(%s...) failed: %s", name, strerror(errno));
+ return 1;
+ }
+ if (unlikely(nlen != len)) {
+ error("MACOS: sysctl(%s...) expected %lu, got %lu", name, (unsigned long)len, (unsigned long)nlen);
+ return 1;
+ }
+ return 0;
+}
+
+#endif // (TARGET_OS == OS_MACOS)
+
diff --git a/libnetdata/os.h b/libnetdata/os.h
new file mode 100644
index 000000000..2494174bc
--- /dev/null
+++ b/libnetdata/os.h
@@ -0,0 +1,70 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#ifndef NETDATA_OS_H
+#define NETDATA_OS_H
+
+#include "libnetdata.h"
+
+// =====================================================================================================================
+// Linux
+
+#if (TARGET_OS == OS_LINUX)
+
+
+// =====================================================================================================================
+// FreeBSD
+
+#elif (TARGET_OS == OS_FREEBSD)
+
+#include <sys/sysctl.h>
+
+#define GETSYSCTL_BY_NAME(name, var) getsysctl_by_name(name, &(var), sizeof(var))
+extern int getsysctl_by_name(const char *name, void *ptr, size_t len);
+
+#define GETSYSCTL_MIB(name, mib) getsysctl_mib(name, mib, sizeof(mib)/sizeof(int))
+
+extern int getsysctl_mib(const char *name, int *mib, size_t len);
+
+#define GETSYSCTL_SIMPLE(name, mib, var) getsysctl_simple(name, mib, sizeof(mib)/sizeof(int), &(var), sizeof(var))
+#define GETSYSCTL_WSIZE(name, mib, var, size) getsysctl_simple(name, mib, sizeof(mib)/sizeof(int), var, size)
+
+extern int getsysctl_simple(const char *name, int *mib, size_t miblen, void *ptr, size_t len);
+
+#define GETSYSCTL_SIZE(name, mib, size) getsysctl(name, mib, sizeof(mib)/sizeof(int), NULL, &(size))
+#define GETSYSCTL(name, mib, var, size) getsysctl(name, mib, sizeof(mib)/sizeof(int), &(var), &(size))
+
+extern int getsysctl(const char *name, int *mib, size_t miblen, void *ptr, size_t *len);
+
+
+// =====================================================================================================================
+// MacOS
+
+#elif (TARGET_OS == OS_MACOS)
+
+#include <sys/sysctl.h>
+
+#define GETSYSCTL_BY_NAME(name, var) getsysctl_by_name(name, &(var), sizeof(var))
+extern int getsysctl_by_name(const char *name, void *ptr, size_t len);
+
+
+// =====================================================================================================================
+// unknown O/S
+
+#else
+#error unsupported operating system
+#endif
+
+
+// =====================================================================================================================
+// common for all O/S
+
+extern int processors;
+extern long get_system_cpus(void);
+
+extern pid_t pid_max;
+extern pid_t get_system_pid_max(void);
+
+extern unsigned int system_hz;
+extern void get_system_HZ(void);
+
+#endif //NETDATA_OS_H
diff --git a/libnetdata/popen/Makefile.am b/libnetdata/popen/Makefile.am
new file mode 100644
index 000000000..1cb69ed99
--- /dev/null
+++ b/libnetdata/popen/Makefile.am
@@ -0,0 +1,9 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+AUTOMAKE_OPTIONS = subdir-objects
+MAINTAINERCLEANFILES = $(srcdir)/Makefile.in
+
+
+dist_noinst_DATA = \
+ README.md \
+ $(NULL)
diff --git a/libnetdata/popen/Makefile.in b/libnetdata/popen/Makefile.in
new file mode 100644
index 000000000..0a699332f
--- /dev/null
+++ b/libnetdata/popen/Makefile.in
@@ -0,0 +1,464 @@
+# Makefile.in generated by automake 1.14.1 from Makefile.am.
+# @configure_input@
+
+# Copyright (C) 1994-2013 Free Software Foundation, Inc.
+
+# This Makefile.in is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+# PARTICULAR PURPOSE.
+
+@SET_MAKE@
+
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diff --git a/libnetdata/popen/README.md b/libnetdata/popen/README.md
new file mode 100644
index 000000000..e69de29bb
--- /dev/null
+++ b/libnetdata/popen/README.md
diff --git a/src/popen.c b/libnetdata/popen/popen.c
index eda1c05b9..845363fd2 100644
--- a/src/popen.c
+++ b/libnetdata/popen/popen.c
@@ -1,4 +1,6 @@
-#include "common.h"
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "../libnetdata.h"
/*
struct mypopen {
@@ -67,7 +69,7 @@ FILE *mypopen(const char *command, volatile pid_t *pidptr)
// close all files
int i;
- for(i = (int) (sysconf(_SC_OPEN_MAX) - 1); i > 0; i--)
+ for(i = (int) (sysconf(_SC_OPEN_MAX) - 1); i >= 0; i--)
if(i != STDIN_FILENO && i != STDERR_FILENO && i != pipefd[PIPE_WRITE]) close(i);
// move the pipe to stdout
@@ -136,7 +138,7 @@ FILE *mypopene(const char *command, volatile pid_t *pidptr, char **env) {
// close all files
int i;
- for(i = (int) (sysconf(_SC_OPEN_MAX) - 1); i > 0; i--)
+ for(i = (int) (sysconf(_SC_OPEN_MAX) - 1); i >= 0; i--)
if(i != STDIN_FILENO && i != STDERR_FILENO && i != pipefd[PIPE_WRITE]) close(i);
// move the pipe to stdout
diff --git a/src/popen.h b/libnetdata/popen/popen.h
index 3dd79bb4d..90d4b829b 100644
--- a/src/popen.h
+++ b/libnetdata/popen/popen.h
@@ -1,6 +1,10 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
#ifndef NETDATA_POPEN_H
#define NETDATA_POPEN_H 1
+#include "../libnetdata.h"
+
#define PIPE_READ 0
#define PIPE_WRITE 1
@@ -8,4 +12,7 @@ extern FILE *mypopen(const char *command, volatile pid_t *pidptr);
extern FILE *mypopene(const char *command, volatile pid_t *pidptr, char **env);
extern int mypclose(FILE *fp, pid_t pid);
+extern void signals_unblock(void);
+extern void signals_reset(void);
+
#endif /* NETDATA_POPEN_H */
diff --git a/libnetdata/procfile/Makefile.am b/libnetdata/procfile/Makefile.am
new file mode 100644
index 000000000..1cb69ed99
--- /dev/null
+++ b/libnetdata/procfile/Makefile.am
@@ -0,0 +1,9 @@
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+
+
+dist_noinst_DATA = \
+ README.md \
+ $(NULL)
diff --git a/libnetdata/procfile/Makefile.in b/libnetdata/procfile/Makefile.in
new file mode 100644
index 000000000..643e00ba1
--- /dev/null
+++ b/libnetdata/procfile/Makefile.in
@@ -0,0 +1,464 @@
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diff --git a/libnetdata/procfile/README.md b/libnetdata/procfile/README.md
new file mode 100644
index 000000000..279885f93
--- /dev/null
+++ b/libnetdata/procfile/README.md
@@ -0,0 +1,61 @@
+
+# PROCFILE
+
+procfile is a library for reading text data files (i.e `/proc` files) in the fastest possible way.
+
+## How it works
+
+The library automatically adapts (through the iterations) its memory so that each file
+is read with single `read()` call.
+
+Then the library splits the file into words, using the supplied separators.
+The library also supported quoted words (i.e. strings within of which the separators are ignored).
+
+### Initialization
+
+Initially the caller:
+
+- calls `procfile_open()` to open the file and allocate the structures needed.
+
+### Iterations
+
+For each iteration, the caller:
+
+- calls `procfile_readall()` to read updated contents.
+ This call also rewinds (`lseek()` to 0) before reading it.
+
+ For every file, a [BUFFER](../buffer/) is used that is automatically adjusted to fit
+ the entire file contents of the file. So the file is read with a single `read()` call
+ (providing atomicity / consistency when the data are read from the kernel).
+
+ Once the data are read, 2 arrays of pointers are updated:
+
+ - a `words` array, pointing to each word in the data read
+ - a `lines` array, pointing to the first word for each line
+
+ This is highly optimized. Both arrays are automatically adjusted to
+ fit all contents and are updated in a single pass on the data.
+
+ The library provides a number of macros:
+
+ - `procfile_lines()` returns the # of lines read
+ - `procfile_linewords()` returns the # of words in the given line
+ - `procfile_word()` returns a pointer the given word #
+ - `procfile_line()` returns a pointer to the first word of the given line #
+ - `procfile_lineword()` returns a pointer to the given word # of the given line #
+
+### Cleanup
+
+When the caller exits:
+
+- calls `procfile_free()` to close the file and free all memory used.
+
+### Performance
+
+- a **raspberry Pi 1** (the oldest single core one) can process 5.000+ `/proc` files per second.
+- a **J1900 Celeron** processor can process 23.000+ `/proc` files per second per core.
+
+To achieve this kind of performance, the library tries to work in batches so that the code
+and the data are inside the processor's caches.
+
+This library is extensively used in netdata and its plugins.
diff --git a/src/procfile.c b/libnetdata/procfile/procfile.c
index 044f975b5..4a812baab 100644
--- a/src/procfile.c
+++ b/libnetdata/procfile/procfile.c
@@ -1,5 +1,6 @@
-#include "common.h"
-#include "procfile.h"
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "../libnetdata.h"
#define PF_PREFIX "PROCFILE"
@@ -7,6 +8,8 @@
#define PFLINES_INCREASE_STEP 10
#define PROCFILE_INCREMENT_BUFFER 512
+int procfile_open_flags = O_RDONLY;
+
int procfile_adaptive_initial_allocation = 0;
// if adaptive allocation is set, these store the
@@ -391,7 +394,7 @@ void procfile_set_open_close(procfile *ff, const char *open, const char *close)
procfile *procfile_open(const char *filename, const char *separators, uint32_t flags) {
debug(D_PROCFILE, PF_PREFIX ": Opening file '%s'", filename);
- int fd = open(filename, O_RDONLY, 0666);
+ int fd = open(filename, procfile_open_flags, 0666);
if(unlikely(fd == -1)) {
if(unlikely(!(flags & PROCFILE_FLAG_NO_ERROR_ON_FILE_IO))) error(PF_PREFIX ": Cannot open file '%s'", filename);
return NULL;
@@ -427,7 +430,7 @@ procfile *procfile_reopen(procfile *ff, const char *filename, const char *separa
close(ff->fd);
}
- ff->fd = open(filename, O_RDONLY, 0666);
+ ff->fd = open(filename, procfile_open_flags, 0666);
if(unlikely(ff->fd == -1)) {
procfile_close(ff);
return NULL;
@@ -451,6 +454,7 @@ procfile *procfile_reopen(procfile *ff, const char *filename, const char *separa
void procfile_print(procfile *ff) {
size_t lines = procfile_lines(ff), l;
char *s;
+ (void)s;
debug(D_PROCFILE, "File '%s' with %zu lines and %zu words", procfile_filename(ff), ff->lines->len, ff->words->len);
diff --git a/src/procfile.h b/libnetdata/procfile/procfile.h
index 012c6efe1..b107358ab 100644
--- a/src/procfile.h
+++ b/libnetdata/procfile/procfile.h
@@ -1,31 +1,10 @@
-/*
- * procfile is a library for reading kernel files from /proc
- *
- * The idea is this:
- *
- * - every file is opened once with procfile_open().
- *
- * - to read updated contents, we rewind it (lseek() to 0) and read again
- * with procfile_readall().
- *
- * - for every file, we use a buffer that is adjusted to fit its entire
- * contents in memory, allowing us to read it with a single read() call.
- * (this provides atomicity / consistency on the data read from the kernel)
- *
- * - once the data are read, we update two arrays of pointers:
- * - a words array, pointing to each word in the data read
- * - a lines array, pointing to the first word for each line
- *
- * This is highly optimized. Both arrays are automatically adjusted to
- * fit all contents and are updated in a single pass on the data:
- * - a raspberry Pi can process 5.000+ files / sec.
- * - a J1900 celeron processor can process 23.000+ files / sec.
-*/
-
+// SPDX-License-Identifier: GPL-3.0-or-later
#ifndef NETDATA_PROCFILE_H
#define NETDATA_PROCFILE_H 1
+#include "../libnetdata.h"
+
// ----------------------------------------------------------------------------
// An array of words
@@ -103,6 +82,9 @@ extern char *procfile_filename(procfile *ff);
// ----------------------------------------------------------------------------
+// set to the O_XXXX flags, to have procfile_open and procfile_reopen use them when opening proc files
+extern int procfile_open_flags;
+
// set this to 1, to have procfile adapt its initial buffer allocation to the max allocation used so far
extern int procfile_adaptive_initial_allocation;
diff --git a/libnetdata/simple_pattern/Makefile.am b/libnetdata/simple_pattern/Makefile.am
new file mode 100644
index 000000000..1cb69ed99
--- /dev/null
+++ b/libnetdata/simple_pattern/Makefile.am
@@ -0,0 +1,9 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
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diff --git a/libnetdata/simple_pattern/Makefile.in b/libnetdata/simple_pattern/Makefile.in
new file mode 100644
index 000000000..575850f03
--- /dev/null
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@@ -0,0 +1,464 @@
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diff --git a/libnetdata/simple_pattern/README.md b/libnetdata/simple_pattern/README.md
new file mode 100644
index 000000000..22ccf373a
--- /dev/null
+++ b/libnetdata/simple_pattern/README.md
@@ -0,0 +1,36 @@
+## netdata simple patterns
+
+Unix prefers regular expressions. But they are just too hard, too cryptic
+to use, write and understand.
+
+So, netdata supports **simple patterns**.
+
+Simple patterns are a space separated list of words, that can have `*`
+as a wildcard. Each world may use any number of `*`. Simple patterns
+allow **negative** matches by prefixing a word with `!`.
+
+So, `pattern = !*bad* *` will match anything, except all those that
+contain the word `bad`.
+
+Simple patterns are quite powerful: `pattern = *foobar* !foo* !*bar *`
+matches everything containing `foobar`, except strings that start
+with `foo` or end with `bar`.
+
+You can use the netdata command line to check simple patterns,
+like this:
+
+```sh
+# netdata -W simple-pattern '*foobar* !foo* !*bar *' 'hello world'
+RESULT: MATCHED - pattern '*foobar* !foo* !*bar *' matches 'hello world'
+
+# netdata -W simple-pattern '*foobar* !foo* !*bar *' 'hello world bar'
+RESULT: NOT MATCHED - pattern '*foobar* !foo* !*bar *' does not match 'hello world bar'
+
+# netdata -W simple-pattern '*foobar* !foo* !*bar *' 'hello world foobar'
+RESULT: MATCHED - pattern '*foobar* !foo* !*bar *' matches 'hello world foobar'
+```
+
+netdata stops processing to the first positive or negative match
+(left to right). If it is not matched by either positive or negative
+patterns, it is denied at the end.
+
diff --git a/src/simple_pattern.c b/libnetdata/simple_pattern/simple_pattern.c
index 747b5150a..57b0aecc8 100644
--- a/src/simple_pattern.c
+++ b/libnetdata/simple_pattern/simple_pattern.c
@@ -1,4 +1,6 @@
-#include "common.h"
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "../libnetdata.h"
struct simple_pattern {
const char *match;
diff --git a/src/simple_pattern.h b/libnetdata/simple_pattern/simple_pattern.h
index d0b75af7e..b96a018ef 100644
--- a/src/simple_pattern.h
+++ b/libnetdata/simple_pattern/simple_pattern.h
@@ -1,6 +1,11 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
#ifndef NETDATA_SIMPLE_PATTERN_H
#define NETDATA_SIMPLE_PATTERN_H
+#include "../libnetdata.h"
+
+
typedef enum {
SIMPLE_PATTERN_EXACT,
SIMPLE_PATTERN_PREFIX,
diff --git a/libnetdata/socket/Makefile.am b/libnetdata/socket/Makefile.am
new file mode 100644
index 000000000..1cb69ed99
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+ && { if test -f $@; then exit 0; else break; fi; }; \
+ exit 1;; \
+ esac; \
+ done; \
+ echo ' cd $(top_srcdir) && $(AUTOMAKE) --gnu libnetdata/socket/Makefile'; \
+ $(am__cd) $(top_srcdir) && \
+ $(AUTOMAKE) --gnu libnetdata/socket/Makefile
+.PRECIOUS: Makefile
+Makefile: $(srcdir)/Makefile.in $(top_builddir)/config.status
+ @case '$?' in \
+ *config.status*) \
+ cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh;; \
+ *) \
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+ esac;
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+ cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+
+$(top_srcdir)/configure: @MAINTAINER_MODE_TRUE@ $(am__configure_deps)
+ cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
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+ cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+$(am__aclocal_m4_deps):
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+cscope cscopelist:
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+ topsrcdirstrip=`echo "$(top_srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
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+ */*) $(MKDIR_P) `echo "$$dist_files" | \
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+ if test -f $$file || test -d $$file; then d=.; else d=$(srcdir); fi; \
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+ fi; \
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+ test -f "$(distdir)/$$file" \
+ || cp -p $$d/$$file "$(distdir)/$$file" \
+ || exit 1; \
+ fi; \
+ done
+check-am: all-am
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+ $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
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+ fi
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+
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+
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+ -test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
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+
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+ @echo "it deletes files that may require special tools to rebuild."
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diff --git a/libnetdata/socket/README.md b/libnetdata/socket/README.md
new file mode 100644
index 000000000..e69de29bb
--- /dev/null
+++ b/libnetdata/socket/README.md
diff --git a/src/socket.c b/libnetdata/socket/socket.c
index 8bede73fd..c266efeb4 100644
--- a/src/socket.c
+++ b/libnetdata/socket/socket.c
@@ -1,4 +1,6 @@
-#include "common.h"
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "../libnetdata.h"
// --------------------------------------------------------------------------------------------------------------------
// various library calls
@@ -45,12 +47,14 @@ int sock_setreuse(int fd, int reuse) {
}
int sock_setreuse_port(int fd, int reuse) {
- int ret = -1;
+ int ret;
#ifdef SO_REUSEPORT
ret = setsockopt(fd, SOL_SOCKET, SO_REUSEPORT, &reuse, sizeof(reuse));
if(ret == -1 && errno != ENOPROTOOPT)
error("failed to set SO_REUSEPORT on socket %d", fd);
+#else
+ ret = -1;
#endif
return ret;
@@ -80,7 +84,7 @@ int sock_enlarge_out(int fd) {
// --------------------------------------------------------------------------------------------------------------------
-char *strdup_client_description(int family, const char *protocol, const char *ip, int port) {
+char *strdup_client_description(int family, const char *protocol, const char *ip, uint16_t port) {
char buffer[100 + 1];
switch(family) {
@@ -148,7 +152,7 @@ int create_listen_socket_unix(const char *path, int listen_backlog) {
return sock;
}
-int create_listen_socket4(int socktype, const char *ip, int port, int listen_backlog) {
+int create_listen_socket4(int socktype, const char *ip, uint16_t port, int listen_backlog) {
int sock;
debug(D_LISTENER, "LISTENER: IPv4 creating new listening socket on ip '%s' port %d, socktype %d", ip, port, socktype);
@@ -244,7 +248,7 @@ int create_listen_socket6(int socktype, uint32_t scope_id, const char *ip, int p
return sock;
}
-static inline int listen_sockets_add(LISTEN_SOCKETS *sockets, int fd, int family, int socktype, const char *protocol, const char *ip, int port) {
+static inline int listen_sockets_add(LISTEN_SOCKETS *sockets, int fd, int family, int socktype, const char *protocol, const char *ip, uint16_t port) {
if(sockets->opened >= MAX_LISTEN_FDS) {
error("LISTENER: Too many listening sockets. Failed to add listening %s socket at ip '%s' port %d, protocol %s, socktype %d", protocol, ip, port, protocol, socktype);
close(fd);
@@ -296,7 +300,7 @@ void listen_sockets_close(LISTEN_SOCKETS *sockets) {
sockets->failed = 0;
}
-static inline int bind_to_this(LISTEN_SOCKETS *sockets, const char *definition, int default_port, int listen_backlog) {
+static inline int bind_to_this(LISTEN_SOCKETS *sockets, const char *definition, uint16_t default_port, int listen_backlog) {
int added = 0;
struct addrinfo hints;
struct addrinfo *result = NULL, *rp = NULL;
@@ -396,10 +400,10 @@ static inline int bind_to_this(LISTEN_SOCKETS *sockets, const char *definition,
for (rp = result; rp != NULL; rp = rp->ai_next) {
int fd = -1;
- int family = -1;
+ int family;
char rip[INET_ADDRSTRLEN + INET6_ADDRSTRLEN] = "INVALID";
- int rport = default_port;
+ uint16_t rport = default_port;
family = rp->ai_addr->sa_family;
switch (family) {
@@ -444,17 +448,19 @@ static inline int bind_to_this(LISTEN_SOCKETS *sockets, const char *definition,
int listen_sockets_setup(LISTEN_SOCKETS *sockets) {
listen_sockets_init(sockets);
- sockets->backlog = (int) config_get_number(sockets->config_section, "listen backlog", sockets->backlog);
+ sockets->backlog = (int) appconfig_get_number(sockets->config, sockets->config_section, "listen backlog", sockets->backlog);
- int old_port = sockets->default_port;
- sockets->default_port = (int) config_get_number(sockets->config_section, "default port", sockets->default_port);
- if(sockets->default_port < 1 || sockets->default_port > 65535) {
- error("LISTENER: Invalid listen port %d given. Defaulting to %d.", sockets->default_port, old_port);
- sockets->default_port = (int) config_set_number(sockets->config_section, "default port", old_port);
+ long long int old_port = sockets->default_port;
+ long long int new_port = appconfig_get_number(sockets->config, sockets->config_section, "default port", sockets->default_port);
+ if(new_port < 1 || new_port > 65535) {
+ error("LISTENER: Invalid listen port %lld given. Defaulting to %lld.", new_port, old_port);
+ sockets->default_port = (uint16_t) appconfig_set_number(sockets->config, sockets->config_section, "default port", old_port);
}
+ else sockets->default_port = (uint16_t)new_port;
+
debug(D_OPTIONS, "LISTENER: Default listen port set to %d.", sockets->default_port);
- char *s = config_get(sockets->config_section, "bind to", sockets->default_bind_to);
+ char *s = appconfig_get(sockets->config, sockets->config_section, "bind to", sockets->default_bind_to);
while(*s) {
char *e = s;
@@ -585,6 +591,8 @@ static inline int connect_to_this_ip46(int protocol, int socktype, const char *h
switch (ai->ai_addr->sa_family) {
case PF_INET: {
struct sockaddr_in *pSadrIn = (struct sockaddr_in *)ai->ai_addr;
+ (void)pSadrIn;
+
debug(D_CONNECT_TO, "ai_addr = sin_family: %d (AF_INET = %d, AF_INET6 = %d), sin_addr: '%s', sin_port: '%s'",
pSadrIn->sin_family,
AF_INET,
@@ -596,6 +604,8 @@ static inline int connect_to_this_ip46(int protocol, int socktype, const char *h
case PF_INET6: {
struct sockaddr_in6 *pSadrIn6 = (struct sockaddr_in6 *) ai->ai_addr;
+ (void)pSadrIn6;
+
debug(D_CONNECT_TO,"ai_addr = sin6_family: %d (AF_INET = %d, AF_INET6 = %d), sin6_addr: '%s', sin6_port: '%s', sin6_flowinfo: %u, sin6_scope_id: %u",
pSadrIn6->sin6_family,
AF_INET,
@@ -968,10 +978,10 @@ inline POLLINFO *poll_add_fd(POLLJOB *p
, uint32_t flags
, const char *client_ip
, const char *client_port
- , void *(*add_callback)(POLLINFO *pi, short int *events, void *data)
- , void (*del_callback)(POLLINFO *pi)
- , int (*rcv_callback)(POLLINFO *pi, short int *events)
- , int (*snd_callback)(POLLINFO *pi, short int *events)
+ , void *(*add_callback)(POLLINFO * /*pi*/, short int * /*events*/, void * /*data*/)
+ , void (*del_callback)(POLLINFO * /*pi*/)
+ , int (*rcv_callback)(POLLINFO * /*pi*/, short int * /*events*/)
+ , int (*snd_callback)(POLLINFO * /*pi*/, short int * /*events*/)
, void *data
) {
debug(D_POLLFD, "POLLFD: ADD: request to add fd %d, slots = %zu, used = %zu, min = %zu, max = %zu, next free = %zd", fd, p->slots, p->used, p->min, p->max, p->first_free?(ssize_t)p->first_free->slot:(ssize_t)-1);
@@ -1286,7 +1296,9 @@ static void poll_events_process(POLLJOB *p, POLLINFO *pi, struct pollfd *pf, sho
debug(D_POLLFD, "POLLFD: LISTENER: reading data from UDP slot %zu (fd %d)", i, fd);
- // FIXME: access_list is not applied to UDP
+ // TODO: access_list is not applied to UDP
+ // but checking the access list on every UDP packet will destroy
+ // performance, especially for statsd.
pf->events = 0;
pi->rcv_callback(pi, &pf->events);
@@ -1349,11 +1361,11 @@ static void poll_events_process(POLLJOB *p, POLLINFO *pi, struct pollfd *pf, sho
}
void poll_events(LISTEN_SOCKETS *sockets
- , void *(*add_callback)(POLLINFO *pi, short int *events, void *data)
- , void (*del_callback)(POLLINFO *pi)
- , int (*rcv_callback)(POLLINFO *pi, short int *events)
- , int (*snd_callback)(POLLINFO *pi, short int *events)
- , void (*tmr_callback)(void *timer_data)
+ , void *(*add_callback)(POLLINFO * /*pi*/, short int * /*events*/, void * /*data*/)
+ , void (*del_callback)(POLLINFO * /*pi*/)
+ , int (*rcv_callback)(POLLINFO * /*pi*/, short int * /*events*/)
+ , int (*snd_callback)(POLLINFO * /*pi*/, short int * /*events*/)
+ , void (*tmr_callback)(void * /*timer_data*/)
, SIMPLE_PATTERN *access_list
, void *data
, time_t tcp_request_timeout_seconds
@@ -1423,6 +1435,8 @@ void poll_events(LISTEN_SOCKETS *sockets
usec_t timer_usec = timer_milliseconds * USEC_PER_MS;
usec_t now_usec = 0, next_timer_usec = 0, last_timer_usec = 0;
+ (void)last_timer_usec;
+
if(unlikely(timer_usec)) {
now_usec = now_boottime_usec();
next_timer_usec = now_usec - (now_usec % timer_usec) + timer_usec;
diff --git a/src/socket.h b/libnetdata/socket/socket.h
index 7b3e726ec..f5412b63d 100644
--- a/src/socket.h
+++ b/libnetdata/socket/socket.h
@@ -1,14 +1,19 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
#ifndef NETDATA_SOCKET_H
#define NETDATA_SOCKET_H
+#include "../libnetdata.h"
+
#ifndef MAX_LISTEN_FDS
#define MAX_LISTEN_FDS 50
#endif
typedef struct listen_sockets {
+ struct config *config; // the config file to use
const char *config_section; // the netdata configuration section to read settings from
const char *default_bind_to; // the default bind to configuration string
- int default_port; // the default port to use
+ uint16_t default_port; // the default port to use
int backlog; // the default listen backlog to use
size_t opened; // the number of sockets opened
@@ -19,7 +24,7 @@ typedef struct listen_sockets {
int fds_families[MAX_LISTEN_FDS]; // the family of the open sockets (AF_UNIX, AF_INET, AF_INET6)
} LISTEN_SOCKETS;
-extern char *strdup_client_description(int family, const char *protocol, const char *ip, int port);
+extern char *strdup_client_description(int family, const char *protocol, const char *ip, uint16_t port);
extern int listen_sockets_setup(LISTEN_SOCKETS *sockets);
extern void listen_sockets_close(LISTEN_SOCKETS *sockets);
diff --git a/libnetdata/statistical/Makefile.am b/libnetdata/statistical/Makefile.am
new file mode 100644
index 000000000..1cb69ed99
--- /dev/null
+++ b/libnetdata/statistical/Makefile.am
@@ -0,0 +1,9 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+AUTOMAKE_OPTIONS = subdir-objects
+MAINTAINERCLEANFILES = $(srcdir)/Makefile.in
+
+
+dist_noinst_DATA = \
+ README.md \
+ $(NULL)
diff --git a/libnetdata/statistical/Makefile.in b/libnetdata/statistical/Makefile.in
new file mode 100644
index 000000000..8209a1ecb
--- /dev/null
+++ b/libnetdata/statistical/Makefile.in
@@ -0,0 +1,464 @@
+# Makefile.in generated by automake 1.14.1 from Makefile.am.
+# @configure_input@
+
+# Copyright (C) 1994-2013 Free Software Foundation, Inc.
+
+# This Makefile.in is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
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+
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+ README.md \
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+ $(AUTOMAKE) --gnu libnetdata/statistical/Makefile
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+ @case '$?' in \
+ *config.status*) \
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diff --git a/libnetdata/statistical/README.md b/libnetdata/statistical/README.md
new file mode 100644
index 000000000..e69de29bb
--- /dev/null
+++ b/libnetdata/statistical/README.md
diff --git a/src/statistical.c b/libnetdata/statistical/statistical.c
index d4b33fd5a..15792fd15 100644
--- a/src/statistical.c
+++ b/libnetdata/statistical/statistical.c
@@ -1,37 +1,36 @@
-#include "common.h"
+// SPDX-License-Identifier: GPL-3.0-or-later
-// --------------------------------------------------------------------------------------------------------------------
-
-inline LONG_DOUBLE sum_and_count(const LONG_DOUBLE *series, size_t entries, size_t *count) {
- if(unlikely(entries == 0)) {
- if(likely(count))
- *count = 0;
+#include "../libnetdata.h"
- return NAN;
- }
+LONG_DOUBLE default_single_exponential_smoothing_alpha = 0.1;
- if(unlikely(entries == 1)) {
- if(likely(count))
- *count = (isnan(series[0])?0:1);
+void log_series_to_stderr(LONG_DOUBLE *series, size_t entries, calculated_number result, const char *msg) {
+ const LONG_DOUBLE *value, *end = &series[entries];
- return series[0];
+ fprintf(stderr, "%s of %zu entries [ ", msg, entries);
+ for(value = series; value < end ;value++) {
+ if(value != series) fprintf(stderr, ", ");
+ fprintf(stderr, "%" LONG_DOUBLE_MODIFIER, *value);
}
+ fprintf(stderr, " ] results in " CALCULATED_NUMBER_FORMAT "\n", result);
+}
+
+// --------------------------------------------------------------------------------------------------------------------
- size_t i, c = 0;
+inline LONG_DOUBLE sum_and_count(const LONG_DOUBLE *series, size_t entries, size_t *count) {
+ const LONG_DOUBLE *value, *end = &series[entries];
LONG_DOUBLE sum = 0;
+ size_t c = 0;
- for(i = 0; i < entries ; i++) {
- LONG_DOUBLE value = series[i];
- if(unlikely(isnan(value) || isinf(value))) continue;
- c++;
- sum += value;
+ for(value = series; value < end ; value++) {
+ if(isnormal(*value)) {
+ sum += *value;
+ c++;
+ }
}
- if(likely(count))
- *count = c;
-
- if(unlikely(c == 0))
- return NAN;
+ if(unlikely(!c)) sum = NAN;
+ if(likely(count)) *count = c;
return sum;
}
@@ -44,9 +43,7 @@ inline LONG_DOUBLE average(const LONG_DOUBLE *series, size_t entries) {
size_t count = 0;
LONG_DOUBLE sum = sum_and_count(series, entries, &count);
- if(unlikely(count == 0))
- return NAN;
-
+ if(unlikely(!count)) return NAN;
return sum / (LONG_DOUBLE)count;
}
@@ -65,7 +62,7 @@ LONG_DOUBLE moving_average(const LONG_DOUBLE *series, size_t entries, size_t per
for(i = 0, count = 0; i < entries; i++) {
LONG_DOUBLE value = series[i];
- if(unlikely(isnan(value) || isinf(value))) continue;
+ if(unlikely(!isnormal(value))) continue;
if(unlikely(count < period)) {
sum += value;
@@ -116,33 +113,25 @@ inline LONG_DOUBLE *copy_series(const LONG_DOUBLE *series, size_t entries) {
}
LONG_DOUBLE median_on_sorted_series(const LONG_DOUBLE *series, size_t entries) {
- if(unlikely(entries == 0))
- return NAN;
-
- if(unlikely(entries == 1))
- return series[0];
-
- if(unlikely(entries == 2))
- return (series[0] + series[1]) / 2;
+ if(unlikely(entries == 0)) return NAN;
+ if(unlikely(entries == 1)) return series[0];
+ if(unlikely(entries == 2)) return (series[0] + series[1]) / 2;
- LONG_DOUBLE avg;
+ LONG_DOUBLE average;
if(entries % 2 == 0) {
size_t m = entries / 2;
- avg = (series[m] + series[m + 1]) / 2;
+ average = (series[m] + series[m + 1]) / 2;
}
else {
- avg = series[entries / 2];
+ average = series[entries / 2];
}
- return avg;
+ return average;
}
LONG_DOUBLE median(const LONG_DOUBLE *series, size_t entries) {
- if(unlikely(entries == 0))
- return NAN;
-
- if(unlikely(entries == 1))
- return series[0];
+ if(unlikely(entries == 0)) return NAN;
+ if(unlikely(entries == 1)) return series[0];
if(unlikely(entries == 2))
return (series[0] + series[1]) / 2;
@@ -184,7 +173,7 @@ LONG_DOUBLE running_median_estimate(const LONG_DOUBLE *series, size_t entries) {
for(i = 0; i < entries ; i++) {
LONG_DOUBLE value = series[i];
- if(unlikely(isnan(value) || isinf(value))) continue;
+ if(unlikely(!isnormal(value))) continue;
average += ( value - average ) * 0.1f; // rough running average.
median += copysignl( average * 0.01, value - median );
@@ -196,47 +185,36 @@ LONG_DOUBLE running_median_estimate(const LONG_DOUBLE *series, size_t entries) {
// --------------------------------------------------------------------------------------------------------------------
LONG_DOUBLE standard_deviation(const LONG_DOUBLE *series, size_t entries) {
- if(unlikely(entries < 1))
- return NAN;
-
- if(unlikely(entries == 1))
- return series[0];
-
- size_t i, count = 0;
- LONG_DOUBLE sum = 0;
+ if(unlikely(entries == 0)) return NAN;
+ if(unlikely(entries == 1)) return series[0];
- for(i = 0; i < entries ; i++) {
- LONG_DOUBLE value = series[i];
- if(unlikely(isnan(value) || isinf(value))) continue;
+ const LONG_DOUBLE *value, *end = &series[entries];
+ size_t count;
+ LONG_DOUBLE sum;
- count++;
- sum += value;
+ for(count = 0, sum = 0, value = series ; value < end ;value++) {
+ if(likely(isnormal(*value))) {
+ count++;
+ sum += *value;
+ }
}
- if(unlikely(count == 0))
- return NAN;
-
- if(unlikely(count == 1))
- return sum;
+ if(unlikely(count == 0)) return NAN;
+ if(unlikely(count == 1)) return sum;
LONG_DOUBLE average = sum / (LONG_DOUBLE)count;
- for(i = 0, count = 0, sum = 0; i < entries ; i++) {
- LONG_DOUBLE value = series[i];
- if(unlikely(isnan(value) || isinf(value))) continue;
-
- count++;
- sum += powl(value - average, 2);
+ for(count = 0, sum = 0, value = series ; value < end ;value++) {
+ if(isnormal(*value)) {
+ count++;
+ sum += powl(*value - average, 2);
+ }
}
- if(unlikely(count == 0))
- return NAN;
-
- if(unlikely(count == 1))
- return average;
-
- LONG_DOUBLE variance = sum / (LONG_DOUBLE)(count - 1); // remove -1 to have a population stddev
+ if(unlikely(count == 0)) return NAN;
+ if(unlikely(count == 1)) return average;
+ LONG_DOUBLE variance = sum / (LONG_DOUBLE)(count); // remove -1 from count to have a population stddev
LONG_DOUBLE stddev = sqrtl(variance);
return stddev;
}
@@ -244,21 +222,36 @@ LONG_DOUBLE standard_deviation(const LONG_DOUBLE *series, size_t entries) {
// --------------------------------------------------------------------------------------------------------------------
LONG_DOUBLE single_exponential_smoothing(const LONG_DOUBLE *series, size_t entries, LONG_DOUBLE alpha) {
- size_t i, count = 0;
- LONG_DOUBLE level = 0, sum = 0;
+ if(unlikely(entries == 0))
+ return NAN;
if(unlikely(isnan(alpha)))
- alpha = 0.3;
+ alpha = default_single_exponential_smoothing_alpha;
- for(i = 0; i < entries ; i++) {
- LONG_DOUBLE value = series[i];
- if(unlikely(isnan(value) || isinf(value))) continue;
- count++;
+ const LONG_DOUBLE *value = series, *end = &series[entries];
+ LONG_DOUBLE level = (1.0 - alpha) * (*value);
+
+ for(value++ ; value < end; value++) {
+ if(likely(isnormal(*value)))
+ level = alpha * (*value) + (1.0 - alpha) * level;
+ }
- sum += value;
+ return level;
+}
+
+LONG_DOUBLE single_exponential_smoothing_reverse(const LONG_DOUBLE *series, size_t entries, LONG_DOUBLE alpha) {
+ if(unlikely(entries == 0))
+ return NAN;
- LONG_DOUBLE last_level = level;
- level = alpha * value + (1.0 - alpha) * last_level;
+ if(unlikely(isnan(alpha)))
+ alpha = default_single_exponential_smoothing_alpha;
+
+ const LONG_DOUBLE *value = &series[entries -1];
+ LONG_DOUBLE level = (1.0 - alpha) * (*value);
+
+ for(value++ ; value >= series; value--) {
+ if(likely(isnormal(*value)))
+ level = alpha * (*value) + (1.0 - alpha) * level;
}
return level;
@@ -268,8 +261,10 @@ LONG_DOUBLE single_exponential_smoothing(const LONG_DOUBLE *series, size_t entri
// http://grisha.org/blog/2016/02/16/triple-exponential-smoothing-forecasting-part-ii/
LONG_DOUBLE double_exponential_smoothing(const LONG_DOUBLE *series, size_t entries, LONG_DOUBLE alpha, LONG_DOUBLE beta, LONG_DOUBLE *forecast) {
- size_t i, count = 0;
- LONG_DOUBLE level = series[0], trend, sum;
+ if(unlikely(entries == 0))
+ return NAN;
+
+ LONG_DOUBLE level, trend;
if(unlikely(isnan(alpha)))
alpha = 0.3;
@@ -277,24 +272,22 @@ LONG_DOUBLE double_exponential_smoothing(const LONG_DOUBLE *series, size_t entri
if(unlikely(isnan(beta)))
beta = 0.05;
+ level = series[0];
+
if(likely(entries > 1))
trend = series[1] - series[0];
else
trend = 0;
- sum = series[0];
-
- for(i = 1; i < entries ; i++) {
- LONG_DOUBLE value = series[i];
- if(unlikely(isnan(value) || isinf(value))) continue;
- count++;
+ const LONG_DOUBLE *value = series;
+ for(value++ ; value >= series; value--) {
+ if(likely(isnormal(*value))) {
- sum += value;
+ LONG_DOUBLE last_level = level;
+ level = alpha * *value + (1.0 - alpha) * (level + trend);
+ trend = beta * (level - last_level) + (1.0 - beta) * trend;
- LONG_DOUBLE last_level = level;
-
- level = alpha * value + (1.0 - alpha) * (level + trend);
- trend = beta * (level - last_level) + (1.0 - beta) * trend;
+ }
}
if(forecast)
diff --git a/src/statistical.h b/libnetdata/statistical/statistical.h
index 675389021..586c6b34a 100644
--- a/src/statistical.h
+++ b/libnetdata/statistical/statistical.h
@@ -1,5 +1,15 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
#ifndef NETDATA_STATISTICAL_H
-#define NETDATA_STATISTICAL_H
+#define NETDATA_STATISTICAL_H 1
+
+#include "../libnetdata.h"
+
+#ifndef isnormal
+#define isnormal(x) (fpclassify(x) == FP_NORMAL)
+#endif
+
+extern void log_series_to_stderr(LONG_DOUBLE *series, size_t entries, calculated_number result, const char *msg);
extern LONG_DOUBLE average(const LONG_DOUBLE *series, size_t entries);
extern LONG_DOUBLE moving_average(const LONG_DOUBLE *series, size_t entries, size_t period);
@@ -8,6 +18,7 @@ extern LONG_DOUBLE moving_median(const LONG_DOUBLE *series, size_t entries, size
extern LONG_DOUBLE running_median_estimate(const LONG_DOUBLE *series, size_t entries);
extern LONG_DOUBLE standard_deviation(const LONG_DOUBLE *series, size_t entries);
extern LONG_DOUBLE single_exponential_smoothing(const LONG_DOUBLE *series, size_t entries, LONG_DOUBLE alpha);
+extern LONG_DOUBLE single_exponential_smoothing_reverse(const LONG_DOUBLE *series, size_t entries, LONG_DOUBLE alpha);
extern LONG_DOUBLE double_exponential_smoothing(const LONG_DOUBLE *series, size_t entries, LONG_DOUBLE alpha, LONG_DOUBLE beta, LONG_DOUBLE *forecast);
extern LONG_DOUBLE holtwinters(const LONG_DOUBLE *series, size_t entries, LONG_DOUBLE alpha, LONG_DOUBLE beta, LONG_DOUBLE gamma, LONG_DOUBLE *forecast);
extern LONG_DOUBLE sum_and_count(const LONG_DOUBLE *series, size_t entries, size_t *count);
diff --git a/libnetdata/storage_number/Makefile.am b/libnetdata/storage_number/Makefile.am
new file mode 100644
index 000000000..1cb69ed99
--- /dev/null
+++ b/libnetdata/storage_number/Makefile.am
@@ -0,0 +1,9 @@
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diff --git a/libnetdata/storage_number/README.md b/libnetdata/storage_number/README.md
new file mode 100644
index 000000000..206c42b87
--- /dev/null
+++ b/libnetdata/storage_number/README.md
@@ -0,0 +1,10 @@
+# netdata storage number
+
+Although `netdata` does all its calculations using `long double`, it stores all values using
+a **custom-made 32-bit number**.
+
+This custom-made number can store in 29 bits values from `-167772150000000.0` to `167772150000000.0`
+with a precision of 0.00001 (yes, it's a floating point number, meaning that higher integer values
+have less decimal precision) and 3 bits for flags.
+
+This provides an extremely optimized memory footprint with just 0.0001% max accuracy loss.
diff --git a/src/storage_number.c b/libnetdata/storage_number/storage_number.c
index c7bbaa8d9..db4cb700b 100644
--- a/src/storage_number.c
+++ b/libnetdata/storage_number/storage_number.c
@@ -1,4 +1,6 @@
-#include "common.h"
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "../libnetdata.h"
storage_number pack_storage_number(calculated_number value, uint32_t flags)
{
diff --git a/src/storage_number.h b/libnetdata/storage_number/storage_number.h
index ef81863fd..5353ab60b 100644
--- a/src/storage_number.h
+++ b/libnetdata/storage_number/storage_number.h
@@ -1,5 +1,9 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
#ifndef NETDATA_STORAGE_NUMBER_H
-#define NETDATA_STORAGE_NUMBER_H
+#define NETDATA_STORAGE_NUMBER_H 1
+
+#include "../libnetdata.h"
#ifdef NETDATA_WITHOUT_LONG_DOUBLE
diff --git a/libnetdata/threads/Makefile.am b/libnetdata/threads/Makefile.am
new file mode 100644
index 000000000..1cb69ed99
--- /dev/null
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@@ -0,0 +1,9 @@
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new file mode 100644
index 000000000..0a4460bcc
--- /dev/null
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@@ -0,0 +1,464 @@
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diff --git a/libnetdata/threads/README.md b/libnetdata/threads/README.md
new file mode 100644
index 000000000..e69de29bb
--- /dev/null
+++ b/libnetdata/threads/README.md
diff --git a/src/threads.c b/libnetdata/threads/threads.c
index b9ca3c085..133d9a547 100644
--- a/src/threads.c
+++ b/libnetdata/threads/threads.c
@@ -1,4 +1,6 @@
-#include "common.h"
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "../libnetdata.h"
static size_t default_stacksize = 0, wanted_stacksize = 0;
static pthread_attr_t *attr = NULL;
diff --git a/src/threads.h b/libnetdata/threads/threads.h
index e2ed6a4ff..eec6ad0e3 100644
--- a/src/threads.h
+++ b/libnetdata/threads/threads.h
@@ -1,5 +1,9 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
#ifndef NETDATA_THREADS_H
-#define NETDATA_THREADS_H
+#define NETDATA_THREADS_H 1
+
+#include "../libnetdata.h"
extern pid_t gettid(void);
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new file mode 100644
index 000000000..1cb69ed99
--- /dev/null
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diff --git a/libnetdata/url/Makefile.in b/libnetdata/url/Makefile.in
new file mode 100644
index 000000000..8ccc4fd64
--- /dev/null
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diff --git a/libnetdata/url/README.md b/libnetdata/url/README.md
new file mode 100644
index 000000000..e69de29bb
--- /dev/null
+++ b/libnetdata/url/README.md
diff --git a/src/url.c b/libnetdata/url/url.c
index 6be4d9648..07a9f8069 100644
--- a/src/url.c
+++ b/libnetdata/url/url.c
@@ -1,4 +1,6 @@
-#include "common.h"
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "../libnetdata.h"
// ----------------------------------------------------------------------------
// URL encode / decode
@@ -58,7 +60,9 @@ char *url_decode_r(char *to, char *url, size_t size) {
while(*s && d < e) {
if(unlikely(*s == '%')) {
if(likely(s[1] && s[2])) {
- *d++ = from_hex(s[1]) << 4 | from_hex(s[2]);
+ char t = from_hex(s[1]) << 4 | from_hex(s[2]);
+ // avoid HTTP header injection
+ *d++ = (char)((isprint(t))? t : ' ');
s += 2;
}
}
diff --git a/src/url.h b/libnetdata/url/url.h
index fa44d49a8..6cef6d7a8 100644
--- a/src/url.h
+++ b/libnetdata/url/url.h
@@ -1,6 +1,10 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
#ifndef NETDATA_URL_H
#define NETDATA_URL_H 1
+#include "../libnetdata.h"
+
// ----------------------------------------------------------------------------
// URL encode / decode
// code from: http://www.geekhideout.com/urlcode.shtml