Fix (cosmetic) typos in dict.h

[redis.git] / src / zmalloc.c

diff --git a/src/zmalloc.c b/src/zmalloc.c
index 5e5598cf1ce7a28c86daaaf3fcfcceb373786d9a..43d60a9c6691942043f396dafadce83f5b985497 100644 (file)
--- a/src/zmalloc.c
+++ b/src/zmalloc.c
@@ -30,6 +30,15 @@
 
 #include <stdio.h>
 #include <stdlib.h>
 
 #include <stdio.h>
 #include <stdlib.h>

+
+/* This function provide us access to the original libc free(). This is useful
+ * for instance to free results obtained by backtrace_symbols(). We need
+ * to define this function before including zmalloc.h that may shadow the
+ * free implementation if we use jemalloc or another non standard allocator. */
+void zlibc_free(void *ptr) {
+    free(ptr);
+}
+

 #include <string.h>
 #include <pthread.h>
 #include "config.h"
 #include <string.h>
 #include <pthread.h>
 #include "config.h"


@@ -100,17 +109,19 @@ static size_t used_memory = 0;
 static int zmalloc_thread_safe = 0;
 pthread_mutex_t used_memory_mutex = PTHREAD_MUTEX_INITIALIZER;
 
 static int zmalloc_thread_safe = 0;
 pthread_mutex_t used_memory_mutex = PTHREAD_MUTEX_INITIALIZER;
 

-static void zmalloc_oom(size_t size) {
+static void zmalloc_default_oom(size_t size) {

     fprintf(stderr, "zmalloc: Out of memory trying to allocate %zu bytes\n",
         size);
     fflush(stderr);
     abort();
 }
 
     fprintf(stderr, "zmalloc: Out of memory trying to allocate %zu bytes\n",
         size);
     fflush(stderr);
     abort();
 }
 

+static void (*zmalloc_oom_handler)(size_t) = zmalloc_default_oom;
+

 void *zmalloc(size_t size) {
     void *ptr = malloc(size+PREFIX_SIZE);
 
 void *zmalloc(size_t size) {
     void *ptr = malloc(size+PREFIX_SIZE);
 

-    if (!ptr) zmalloc_oom(size);
+    if (!ptr) zmalloc_oom_handler(size);

 #ifdef HAVE_MALLOC_SIZE
     update_zmalloc_stat_alloc(zmalloc_size(ptr),size);
     return ptr;
 #ifdef HAVE_MALLOC_SIZE
     update_zmalloc_stat_alloc(zmalloc_size(ptr),size);
     return ptr;


@@ -124,7 +135,7 @@ void *zmalloc(size_t size) {
 void *zcalloc(size_t size) {
     void *ptr = calloc(1, size+PREFIX_SIZE);
 
 void *zcalloc(size_t size) {
     void *ptr = calloc(1, size+PREFIX_SIZE);
 

-    if (!ptr) zmalloc_oom(size);
+    if (!ptr) zmalloc_oom_handler(size);

 #ifdef HAVE_MALLOC_SIZE
     update_zmalloc_stat_alloc(zmalloc_size(ptr),size);
     return ptr;
 #ifdef HAVE_MALLOC_SIZE
     update_zmalloc_stat_alloc(zmalloc_size(ptr),size);
     return ptr;


@@ -146,7 +157,7 @@ void *zrealloc(void *ptr, size_t size) {
 #ifdef HAVE_MALLOC_SIZE
     oldsize = zmalloc_size(ptr);
     newptr = realloc(ptr,size);
 #ifdef HAVE_MALLOC_SIZE
     oldsize = zmalloc_size(ptr);
     newptr = realloc(ptr,size);

-    if (!newptr) zmalloc_oom(size);
+    if (!newptr) zmalloc_oom_handler(size);

 
     update_zmalloc_stat_free(oldsize);
     update_zmalloc_stat_alloc(zmalloc_size(newptr),size);
 
     update_zmalloc_stat_free(oldsize);
     update_zmalloc_stat_alloc(zmalloc_size(newptr),size);


@@ -155,7 +166,7 @@ void *zrealloc(void *ptr, size_t size) {
     realptr = (char*)ptr-PREFIX_SIZE;
     oldsize = *((size_t*)realptr);
     newptr = realloc(realptr,size+PREFIX_SIZE);
     realptr = (char*)ptr-PREFIX_SIZE;
     oldsize = *((size_t*)realptr);
     newptr = realloc(realptr,size+PREFIX_SIZE);

-    if (!newptr) zmalloc_oom(size);
+    if (!newptr) zmalloc_oom_handler(size);

 
     *((size_t*)newptr) = size;
     update_zmalloc_stat_free(oldsize);
 
     *((size_t*)newptr) = size;
     update_zmalloc_stat_free(oldsize);


@@ -227,8 +238,8 @@ void zmalloc_enable_thread_safeness(void) {
     zmalloc_thread_safe = 1;
 }
 
     zmalloc_thread_safe = 1;
 }
 

-void zlibc_free(void *ptr) {
-    free(ptr);
+void zmalloc_set_oom_handler(void (*oom_handler)(size_t)) {
+    zmalloc_oom_handler = oom_handler;

 }
 
 /* Get the RSS information in an OS-specific way.
 }
 
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