2 * mono-semaphore.h: Definitions for generic semaphore usage
5 * Geoff Norton <gnorton@novell.com>
7 * (C) 2009 Novell, Inc.
10 #ifndef _MONO_SEMAPHORE_H_
11 #define _MONO_SEMAPHORE_H_
14 #ifdef HAVE_SEMAPHORE_H
15 #include <semaphore.h>
18 #if defined (HAVE_SEMAPHORE_H) || defined (USE_MACH_SEMA)
19 # define MONO_HAS_SEMAPHORES
21 # if defined (USE_MACH_SEMA)
22 # include <mach/mach_init.h>
23 # include <mach/task.h>
24 # include <mach/semaphore.h>
25 typedef semaphore_t MonoSemType;
26 # define MONO_SEM_INIT(addr,value) semaphore_create (current_task (), (addr), SYNC_POLICY_FIFO, (value))
27 # define MONO_SEM_WAIT(sem) semaphore_wait (*(sem))
28 # define MONO_SEM_POST(sem) semaphore_signal (*(sem))
29 # define MONO_SEM_DESTROY(sem) semaphore_destroy (current_task (), *(sem))
31 typedef sem_t MonoSemType;
32 # define MONO_SEM_INIT(addr,value) sem_init ((addr), 0, (value))
33 # define MONO_SEM_WAIT(sem) sem_wait ((sem))
34 # define MONO_SEM_POST(sem) sem_post ((sem))
35 # define MONO_SEM_DESTROY(sem) sem_destroy ((sem))
37 #elif defined(PLATFORM_WIN32)
38 # define MONO_HAS_SEMAPHORES
39 typedef HANDLE MonoSemType;
40 # define MONO_SEM_INIT(addr,value) do {*(addr) = CreateSemaphore( NULL, (value), 10, NULL);} while(0)
41 # define MONO_SEM_WAIT(sem) WaitForSingleObject ((sem), INFINITE)
42 # define MONO_SEM_POST(sem) ReleaseSemaphore ((sem), 1, NULL)
43 # define MONO_SEM_DESTROY(sem) CloseHandle ((sem))
46 #endif /* _MONO_SEMAPHORE_H_ */