diff options
Diffstat (limited to 'implement.h')
| -rw-r--r-- | implement.h | 24 |
1 files changed, 12 insertions, 12 deletions
diff --git a/implement.h b/implement.h index 41c220d..1addce6 100644 --- a/implement.h +++ b/implement.h @@ -119,27 +119,27 @@ struct pthread_attr_t_ { */ /* - * The following macros provide exclusive access to an object's pointer. + * The following macros are used to serialise access to an object, + * including possibly before it is initialised. * See mutex.c:pthread_mutex_lock() for an example. */ -#define PTW32_OBJECT_GET(type, ppObject, pDest) \ - while (((pDest) = (type) InterlockedCompareExchangePointer((PVOID *)(ppObject), \ - (PVOID)PTW32_OBJECT_IN_USE, \ - (PVOID)PTW32_OBJECT_IN_USE)) \ +#define PTW32_OBJECT_GET(type, pObject, Dest) \ + while (((Dest) = (type) InterlockedExchange((LPLONG)(pObject), \ + (LONG)PTW32_OBJECT_IN_USE)) \ == (type)PTW32_OBJECT_IN_USE) \ { \ Sleep(0); \ } -#define PTW32_OBJECT_SET(ppObject, value) \ - (void) InterlockedExchangePointer((PVOID *)(ppObject), (PVOID)(value)) +#define PTW32_OBJECT_SET(pObject, value) \ + (void) InterlockedExchange((LPLONG)(pObject), (LONG)(value)) -#define PTW32_OBJECT_TRYGET(type, ppObject, pDest) \ - ((((pDest) = (type) InterlockedExchangePointer((PVOID *)(ppObject), \ - (PVOID)PTW32_OBJECT_IN_USE)) \ - == (type)PTW32_OBJECT_IN_USE) ? ((void) InterlockedExchangePointer((PVOID *)(ppObject), \ - (PVOID)(pDest)) , 0) \ +#define PTW32_OBJECT_TRYGET(type, pObject, Dest) \ + ((((Dest) = (type) InterlockedExchange((LPLONG)(pObject), \ + (LONG)PTW32_OBJECT_IN_USE)) \ + == (type)PTW32_OBJECT_IN_USE) ? ((void) InterlockedExchange((LPLONG)(pObject), \ + (LONG)(Dest)) , 0) \ : 1) #define PTW32_OBJECT_IN_USE ((void *) -2) |