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#include "Thread.h"
BH_Semaphore *BH_SemaphoreNew(int value)
{
BH_Semaphore *semaphore;
/* Allocate space for mutex and initialize it */
semaphore = malloc(sizeof(BH_Semaphore));
if (semaphore)
{
semaphore->handle = CreateSemaphore(NULL, value, 0x7FFF, NULL);
if (!semaphore->handle)
{
free(semaphore);
return NULL;
}
}
return semaphore;
}
void BH_SemaphoreFree(BH_Semaphore *semaphore)
{
CloseHandle(semaphore->handle);
free(semaphore);
}
int BH_SemaphorePost(BH_Semaphore *semaphore)
{
if (!ReleaseSemaphore(semaphore->handle, 1, NULL))
return BH_ERROR;
return BH_OK;
}
int BH_SemaphoreWait(BH_Semaphore *semaphore)
{
if (WaitForSingleObject(semaphore->handle, INFINITE))
return BH_ERROR;
return BH_OK;
}
int BH_SemaphoreTryWait(BH_Semaphore *semaphore)
{
if (WaitForSingleObject(semaphore->handle, 0))
return BH_ERROR;
return BH_OK;
}
int BH_SemaphoreWaitFor(BH_Semaphore *semaphore,
uint32_t timeout)
{
switch (WaitForSingleObject(semaphore->handle, timeout))
{
case 0: return BH_OK;
case WAIT_TIMEOUT: return BH_TIMEOUT;
default: return BH_ERROR;
}
}
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