emo/xbps
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

proplib: use GCC atomic builtins if supported.

Browse Source
This commit is contained in:
Juan RP
2014-10-09 14:41:43 +02:00
parent 09c630a825
commit fe76af7702
3 changed files with 65 additions and 12 deletions
Download Patch File Download Diff File Expand all files Collapse all files

46
lib/portableproplib/prop_object_impl.h
View File

@ -277,36 +277,58 @@ struct _prop_object_iterator {
static pthread_once_t x = PTHREAD_ONCE_INIT;
#define _PROP_ONCE_RUN(x,f) pthread_once(&(x),(void(*)(void))f)
#ifndef HAVE_ATOMICS /* NO ATOMIC SUPPORT, USE A MUTEX */
#define _PROP_NEED_REFCNT_MTX
#define _PROP_ATOMIC_INC32(x) \
do { \
pthread_mutex_lock(&_prop_refcnt_mtx); \
(*(x))++; \
pthread_mutex_unlock(&_prop_refcnt_mtx); \
} while (/*CONSTCOND*/0)
#define _PROP_ATOMIC_DEC32(x) \
do { \
pthread_mutex_lock(&_prop_refcnt_mtx); \
(*(x))--; \
pthread_mutex_unlock(&_prop_refcnt_mtx); \
} while (/*CONSTCOND*/0)
#define _PROP_ATOMIC_INC32_NV(x, v) \
do { \
pthread_mutex_lock(&_prop_refcnt_mtx); \
v = ++(*(x)); \
pthread_mutex_unlock(&_prop_refcnt_mtx); \
} while (/*CONSTCOND*/0)
#define _PROP_ATOMIC_DEC32_NV(x, v) \
do { \
pthread_mutex_lock(&_prop_refcnt_mtx); \
v = --(*(x)); \
pthread_mutex_unlock(&_prop_refcnt_mtx); \
} while (/*CONSTCOND*/0)
#else /* GCC ATOMIC BUILTINS */
#define _PROP_ATOMIC_INC32(x) \
do { \
pthread_mutex_lock(&_prop_refcnt_mtx); \
(*(x))++; \
pthread_mutex_unlock(&_prop_refcnt_mtx); \
(void)__sync_fetch_and_add(x, 1); \
} while (/*CONSTCOND*/0)
#define _PROP_ATOMIC_DEC32(x) \
do { \
pthread_mutex_lock(&_prop_refcnt_mtx); \
(*(x))--; \
pthread_mutex_unlock(&_prop_refcnt_mtx); \
(void)__sync_fetch_and_sub(x, 1); \
} while (/*CONSTCOND*/0)
#define _PROP_ATOMIC_INC32_NV(x, v) \
do { \
pthread_mutex_lock(&_prop_refcnt_mtx); \
v = ++(*(x)); \
pthread_mutex_unlock(&_prop_refcnt_mtx); \
v = __sync_add_and_fetch(x, 1); \
} while (/*CONSTCOND*/0)
#define _PROP_ATOMIC_DEC32_NV(x, v) \
do { \
pthread_mutex_lock(&_prop_refcnt_mtx); \
v = --(*(x)); \
pthread_mutex_unlock(&_prop_refcnt_mtx); \
v = __sync_sub_and_fetch(x, 1); \
} while (/*CONSTCOND*/0)
#endif /* !HAVE_ATOMICS */
/*
* Language features.
*/