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#ifndef __SEMAPHORE_H |
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#define __SEMAPHORE_H |
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|
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#define SEM_VALUE_MAX 64 |
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|
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#if defined(c_plusplus) || defined(__cplusplus) |
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extern "C" { |
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#endif /* c_plusplus || __cplusplus */ |
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|
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/* MacOS X doesn't implement unnamed POSIX semaphores, event though |
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the libc defines them! */ |
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#if (defined(__MACH__) && defined(__APPLE__)) |
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#include <mach/mach_init.h> |
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#include <mach/task.h> |
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#include <mach/semaphore.h> |
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|
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#define sem_t semaphore_t |
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#define sem_init(SEM,UNUSED,VALUE) semaphore_create(current_task(), (SEM), SYNC_POLICY_FIFO, (VALUE)) |
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#define sem_destroy(SEM) semaphore_destroy(current_task(), *(SEM)) |
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#define sem_wait(SEM) semaphore_wait(*(SEM)) |
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#define sem_post(SEM) semaphore_signal(*(SEM)) |
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#else |
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typedef struct psem { |
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pthread_mutex_t sem_lock; |
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int sem_value; |
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int sem_waiting; |
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} sem_t; |
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|
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int sem_init(sem_t* sem, int pshared, unsigned int value); |
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int sem_destroy(sem_t* sem); |
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sem_t sem_open(const char* name, int oflag, ...); |
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int sem_close(sem_t* sem); |
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int sem_unlink(const char* name); |
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int sem_wait(sem_t* sem); |
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int sem_trywait(sem_t* sem); |
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int sem_post(sem_t* sem); |
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int sem_getvalue(sem_t* sem, int* sval); |
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#endif |
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|
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#if defined(c_plusplus) || defined(__cplusplus) |
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}; |
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#endif /* c_plusplus || __cplusplus */ |
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|
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#endif /* __SEMAPHORE_H */ |
