From c7b46a471996e45a464a2b52d6cdc81487f19a05 Mon Sep 17 00:00:00 2001
From: antirez <antirez@gmail.com>
Date: Fri, 25 Sep 2015 15:34:16 +0200
Subject: [PATCH] zmalloc.c converted to use atomicvar.h.

---
 src/zmalloc.c | 38 +++++---------------------------------
 1 file changed, 5 insertions(+), 33 deletions(-)

diff --git a/src/zmalloc.c b/src/zmalloc.c
index 640ee19e..da62447e 100644
--- a/src/zmalloc.c
+++ b/src/zmalloc.c
@@ -43,6 +43,7 @@ void zlibc_free(void *ptr) {
 #include <pthread.h>
 #include "config.h"
 #include "zmalloc.h"
+#include "atomicvar.h"
 
 #ifdef HAVE_MALLOC_SIZE
 #define PREFIX_SIZE (0)
@@ -67,32 +68,11 @@ void zlibc_free(void *ptr) {
 #define free(ptr) je_free(ptr)
 #endif
 
-#if defined(__ATOMIC_RELAXED)
-#define update_zmalloc_stat_add(__n) __atomic_add_fetch(&used_memory, (__n), __ATOMIC_RELAXED)
-#define update_zmalloc_stat_sub(__n) __atomic_sub_fetch(&used_memory, (__n), __ATOMIC_RELAXED)
-#elif defined(HAVE_ATOMIC)
-#define update_zmalloc_stat_add(__n) __sync_add_and_fetch(&used_memory, (__n))
-#define update_zmalloc_stat_sub(__n) __sync_sub_and_fetch(&used_memory, (__n))
-#else
-#define update_zmalloc_stat_add(__n) do { \
-    pthread_mutex_lock(&used_memory_mutex); \
-    used_memory += (__n); \
-    pthread_mutex_unlock(&used_memory_mutex); \
-} while(0)
-
-#define update_zmalloc_stat_sub(__n) do { \
-    pthread_mutex_lock(&used_memory_mutex); \
-    used_memory -= (__n); \
-    pthread_mutex_unlock(&used_memory_mutex); \
-} while(0)
-
-#endif
-
 #define update_zmalloc_stat_alloc(__n) do { \
     size_t _n = (__n); \
     if (_n&(sizeof(long)-1)) _n += sizeof(long)-(_n&(sizeof(long)-1)); \
     if (zmalloc_thread_safe) { \
-        update_zmalloc_stat_add(_n); \
+        atomicIncr(used_memory,__n,&used_memory_mutex); \
     } else { \
         used_memory += _n; \
     } \
@@ -102,7 +82,7 @@ void zlibc_free(void *ptr) {
     size_t _n = (__n); \
     if (_n&(sizeof(long)-1)) _n += sizeof(long)-(_n&(sizeof(long)-1)); \
     if (zmalloc_thread_safe) { \
-        update_zmalloc_stat_sub(_n); \
+        atomicDecr(used_memory,__n,&used_memory_mutex); \
     } else { \
         used_memory -= _n; \
     } \
@@ -222,18 +202,10 @@ size_t zmalloc_used_memory(void) {
     size_t um;
 
     if (zmalloc_thread_safe) {
-#if defined(__ATOMIC_RELAXED) || defined(HAVE_ATOMIC)
-        um = update_zmalloc_stat_add(0);
-#else
-        pthread_mutex_lock(&used_memory_mutex);
-        um = used_memory;
-        pthread_mutex_unlock(&used_memory_mutex);
-#endif
-    }
-    else {
+        atomicGet(used_memory,um,&used_memory_mutex);
+    } else {
         um = used_memory;
     }
-
     return um;
 }