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authorDaniel Baumann <daniel.baumann@progress-linux.org>2023-02-06 16:11:30 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2023-02-06 16:11:30 +0000
commitaa2fe8ccbfcb117efa207d10229eeeac5d0f97c7 (patch)
tree941cbdd387b41c1a81587c20a6df9f0e5e0ff7ab /libnetdata/onewayalloc
parentAdding upstream version 1.37.1. (diff)
downloadnetdata-aa2fe8ccbfcb117efa207d10229eeeac5d0f97c7.tar.xz
netdata-aa2fe8ccbfcb117efa207d10229eeeac5d0f97c7.zip
Adding upstream version 1.38.0.upstream/1.38.0
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'libnetdata/onewayalloc')
-rw-r--r--libnetdata/onewayalloc/README.md4
-rw-r--r--libnetdata/onewayalloc/onewayalloc.c13
-rw-r--r--libnetdata/onewayalloc/onewayalloc.h2
3 files changed, 19 insertions, 0 deletions
diff --git a/libnetdata/onewayalloc/README.md b/libnetdata/onewayalloc/README.md
index 1f459c263..3fa0d9fd3 100644
--- a/libnetdata/onewayalloc/README.md
+++ b/libnetdata/onewayalloc/README.md
@@ -1,6 +1,10 @@
<!--
title: "One Way Allocator"
custom_edit_url: https://github.com/netdata/netdata/edit/master/libnetdata/onewayallocator/README.md
+sidebar_label: "One way allocator"
+learn_status: "Published"
+learn_topic_type: "Tasks"
+learn_rel_path: "Developers/libnetdata libraries"
-->
# One Way Allocator
diff --git a/libnetdata/onewayalloc/onewayalloc.c b/libnetdata/onewayalloc/onewayalloc.c
index 59c3b6859..2f007b189 100644
--- a/libnetdata/onewayalloc/onewayalloc.c
+++ b/libnetdata/onewayalloc/onewayalloc.c
@@ -14,6 +14,12 @@ typedef struct owa_page {
struct owa_page *last; // the last page on the list - we currently allocate on this
} OWA_PAGE;
+static size_t onewayalloc_total_memory = 0;
+
+size_t onewayalloc_allocated_memory(void) {
+ return __atomic_load_n(&onewayalloc_total_memory, __ATOMIC_RELAXED);
+}
+
// allocations need to be aligned to CPU register width
// https://en.wikipedia.org/wiki/Data_structure_alignment
static inline size_t natural_alignment(size_t size) {
@@ -60,6 +66,7 @@ static OWA_PAGE *onewayalloc_create_internal(OWA_PAGE *head, size_t size_hint) {
// OWA_PAGE *page = (OWA_PAGE *)netdata_mmap(NULL, size, MAP_ANONYMOUS|MAP_PRIVATE, 0);
// if(unlikely(!page)) fatal("Cannot allocate onewayalloc buffer of size %zu", size);
OWA_PAGE *page = (OWA_PAGE *)mallocz(size);
+ __atomic_add_fetch(&onewayalloc_total_memory, size, __ATOMIC_RELAXED);
page->size = size;
page->offset = natural_alignment(sizeof(OWA_PAGE));
@@ -183,11 +190,17 @@ void onewayalloc_destroy(ONEWAYALLOC *owa) {
// head->stats_mallocs_made, head->stats_mallocs_size,
// head->stats_pages, head->stats_pages_size);
+ size_t total_size = 0;
OWA_PAGE *page = head;
while(page) {
+ total_size += page->size;
+
OWA_PAGE *p = page;
page = page->next;
+
// munmap(p, p->size);
freez(p);
}
+
+ __atomic_sub_fetch(&onewayalloc_total_memory, total_size, __ATOMIC_RELAXED);
}
diff --git a/libnetdata/onewayalloc/onewayalloc.h b/libnetdata/onewayalloc/onewayalloc.h
index e536e0542..a415b063b 100644
--- a/libnetdata/onewayalloc/onewayalloc.h
+++ b/libnetdata/onewayalloc/onewayalloc.h
@@ -16,4 +16,6 @@ void onewayalloc_freez(ONEWAYALLOC *owa, const void *ptr);
void *onewayalloc_doublesize(ONEWAYALLOC *owa, const void *src, size_t oldsize);
+size_t onewayalloc_allocated_memory(void);
+
#endif // ONEWAYALLOC_H