diff options
| -rw-r--r-- | pixman/pixman-private.h | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/pixman/pixman-private.h b/pixman/pixman-private.h index 9dcdca78..857e035e 100644 --- a/pixman/pixman-private.h +++ b/pixman/pixman-private.h @@ -805,6 +805,82 @@ _pixman_log_error (const char *function, const char *message); #endif /* + * Thread primitives + */ + +/* Atomic accessors */ + +#if defined (WIN32) || !defined(ATOMIC_OPS_REQUIRE_MEMORY_BARRIER) + +#define PIXMAN_ATOMIC_POINTER_GET(atomic) \ + (*(void **)(atomic)) +#define PIXMAN_ATOMIC_POINTER_SET(atomic,value) \ + ((*(void **)(atomic)) = (value)) +#define PIXMAN_ATOMIC_INT_GET(atomic) \ + (*(int *)(atomic)) +#define PIXMAN_ATOMIC_INT_SET(atomic, value) \ + (*(int *)(atomic)) + +#else + +#define PIXMAN_ATOMIC_POINTER_GET(atomic) \ + (_pixman_atomic_pointer_get ((atomic))) +#define PIXMAN_ATOMIC_POINTER_SET(atomic, value) \ + (_pixman_atomic_pointer_set ((atomic), (value))) +#define PIXMAN_ATOMIC_INT_GET(atomic) \ + (_pixman_atomic_int_get ((atomic))) +#define PIXMAN_ATOMIC_INT_SET(atomic, value) \ + (_pixman_atomic_int_set ((atomic), (value))) + +#endif + +/* Mutexes */ + +#if defined (WIN32) + +#include <windows.h> + +#define PIXMAN_DEFINE_LOCK(name) \ + static CRITICAL_SECTION __ ## name ## _critical_section; \ + static CRITICAL_SECTION *__ ## name ## _ptr; + +#define PIXMAN_LOCK(name) \ + if (!PIXMAN_ATOMIC_POINTER_GET ((void **)&__ ## name ## _ptr)) \ + { \ + _pixman_win32_initialize_critical_section ( \ + &__ ## name ## _ptr, \ + &__ ## name ## _critical_section); \ + } \ + \ + EnterCriticalSection(&__ ## name ## _critical_section) + +#define PIXMAN_UNLOCK(name) \ + LeaveCriticalSection(&__ ## name ## _critical_section) + +#else + +#define PIXMAN_DEFINE_LOCK(name) \ + static pthread_mutex_t __ ## name ## _mutex = \ + PTHREAD_MUTEX_INITIALIZER; + +#define PIXMAN_LOCK(name) \ + pthread_mutex_lock(&__ ## name ## _mutex) + +#define PIXMAN_UNLOCK(name) \ + pthread_mutex_unlock(&__ ## name ## _mutex) + +#endif + +/* Atomic operations */ + +#if 0 /* FIXME define these */ +PIXMAN_ATOMIC_POINTER_CMPXCHG() +PIXMAN_ATOMIC_INT_DEC_AND_TEST(atomic *a) +PIXMAN_ATOMIC_INT_CMPXCHG(atomic, ...) +#endif + + +/* * Timers */ |