diff options
Diffstat (limited to '')
93 files changed, 10562 insertions, 808 deletions
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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); 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\ 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); 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\ 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 @@ +# 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/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 @@ +# 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; 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+ 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, ×pec) 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, ×pec) 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, ×pec) 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 @@ +# 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; 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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 @@ +# 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/dictionary/Makefile.in b/libnetdata/dictionary/Makefile.in new file mode 100644 index 000000000..bafd64a8a --- /dev/null +++ b/libnetdata/dictionary/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; 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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 @@ +# 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/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 @@ +# 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; 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+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; 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+ (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; 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@@ -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; 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- 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 @@ +# 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/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 @@ +# 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; 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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 + +AUTOMAKE_OPTIONS = subdir-objects +MAINTAINERCLEANFILES = $(srcdir)/Makefile.in + + +dist_noinst_DATA = \ + README.md \ + $(NULL) diff --git a/libnetdata/simple_pattern/Makefile.in b/libnetdata/simple_pattern/Makefile.in new file mode 100644 index 000000000..575850f03 --- /dev/null +++ b/libnetdata/simple_pattern/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; 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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 --- /dev/null +++ b/libnetdata/socket/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/socket/Makefile.in b/libnetdata/socket/Makefile.in new file mode 100644 index 000000000..45f13d068 --- /dev/null +++ b/libnetdata/socket/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; 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+ 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 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install-ps install-ps-am install-strip installcheck \ + installcheck-am installdirs maintainer-clean \ + maintainer-clean-generic mostlyclean mostlyclean-generic pdf \ + pdf-am ps ps-am tags-am uninstall uninstall-am + + +# Tell versions [3.59,3.63) of GNU make to not export all variables. +# Otherwise a system limit (for SysV at least) may be exceeded. +.NOEXPORT: 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 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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 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NETDATA_THREADS_H 1 + +#include "../libnetdata.h" extern pid_t gettid(void); diff --git a/libnetdata/url/Makefile.am b/libnetdata/url/Makefile.am new file mode 100644 index 000000000..1cb69ed99 --- /dev/null +++ b/libnetdata/url/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/url/Makefile.in b/libnetdata/url/Makefile.in new file mode 100644 index 000000000..8ccc4fd64 --- /dev/null +++ b/libnetdata/url/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 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install-ps install-ps-am install-strip installcheck \ + installcheck-am installdirs maintainer-clean \ + maintainer-clean-generic mostlyclean mostlyclean-generic pdf \ + pdf-am ps ps-am tags-am uninstall uninstall-am + + +# Tell versions [3.59,3.63) of GNU make to not export all variables. +# Otherwise a system limit (for SysV at least) may be exceeded. +.NOEXPORT: 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 |