lf_semaphore.h

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#ifndef LF_SEMAPHORE_H
#define LF_SEMAPHORE_H
 
#ifndef NUMBER_OF_WORKERS
#define NUMBER_OF_WORKERS 1
#endif // NUMBER_OF_WORKERS
 
#include "low_level_platform.h"
#include <stdlib.h>

typedef struct {
  size_t count;

  lf_mutex_t mutex;

  lf_cond_t cond;
} lf_semaphore_t;

lf_semaphore_t* lf_semaphore_new(size_t count);

void lf_semaphore_release(lf_semaphore_t* semaphore, size_t i);

void lf_semaphore_acquire(lf_semaphore_t* semaphore);

void lf_semaphore_wait(lf_semaphore_t* semaphore);

void lf_semaphore_destroy(lf_semaphore_t* semaphore);
 
#endif // LF_SEMAPHORE_H