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#ifndef __PLATFORMSEMAPHORE_H
#define __PLATFORMSEMAPHORE_H
#if SUPPORT_THREADS
#ifndef SEMAPHORE_API_PTHREAD
#define SEMAPHORE_API_PTHREAD (UNITY_LINUX || UNITY_PEPPER || UNITY_ANDROID || UNITY_PS3 || UNITY_BB10 || UNITY_TIZEN)
#endif
#endif // SUPPORT_THREADS
#if SEMAPHORE_API_PTHREAD
#if UNITY_PEPPER
# include <errno.h>
# if defined(__native_client__)
# include <semaphore.h>
# else
# include <sys/semaphore.h>
# endif
#else
# include <semaphore.h>
# include <errno.h>
#endif
#include "Runtime/Utilities/Word.h"
#include "Runtime/Utilities/NonCopyable.h"
class PlatformSemaphore : public NonCopyable
{
friend class Semaphore;
protected:
void Create();
void Destroy();
void WaitForSignal();
void Signal();
private:
sem_t m_Semaphore;
};
#define REPORT_SEM_ERROR(action) ErrorStringMsg ("Failed to %s a semaphore (%s)\n", action, strerror (errno))
inline void PlatformSemaphore::Create() { if (sem_init(&m_Semaphore, 0, 0) == -1) REPORT_SEM_ERROR ("open"); }
inline void PlatformSemaphore::Destroy() { if (sem_destroy(&m_Semaphore) == -1) REPORT_SEM_ERROR ("destroy"); }
#if !UNITY_BB10
inline void PlatformSemaphore::WaitForSignal() { if (sem_wait(&m_Semaphore) == -1) REPORT_SEM_ERROR ("wait on"); }
#else
inline void PlatformSemaphore::WaitForSignal() {
int ret = 0;
while ((ret = sem_wait(&m_Semaphore)) == -1 && errno == EINTR)
{
continue;
}
if( ret == -1 )
REPORT_SEM_ERROR ("wait on");
}
#endif
inline void PlatformSemaphore::Signal() {
if (sem_post(&m_Semaphore) == -1)
REPORT_SEM_ERROR ("post to");
}
#undef REPORT_SEM_ERROR
#endif // SEMAPHORE_API_PTHREAD
#endif // __PLATFORMSEMAPHORE_H
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