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#ifndef __ASURA_SEMAPHORE_H__
#define __ASURA_SEMAPHORE_H__
#include "../utils_config.h"
#if ASURA_THREAD_WIN32
#include <windows.h>
#endif
namespace_begin(AsuraEngine)
namespace_begin(Threading)
class SemaphoreImpl;
///
/// ź
///
class Semaphore
{
public:
Semaphore(unsigned int init_count = 1);
~Semaphore();
void Signal();
bool Wait(int timeout = ASURA_MUTEX_MAXWAIT);
private:
SemaphoreImpl* m_Impl;
};
class SemaphoreImpl
{
public:
SemaphoreImpl(unsigned int init_value)
: m_Count(init_value)
{
};
virtual ~SemaphoreImpl() {};
virtual void Signal() = 0;
virtual bool Wait(int timeout) = 0;
inline int Current() { return m_Count; }
protected:
unsigned int m_Count;
};
#define wait(sem, ...) sem.Wait(__VA_ARGS__)
#define signal(sem) sem.Signal()
#if ASURA_THREAD_WIN32
class SemaphoreWin32 : public SemaphoreImpl
{
public:
SemaphoreWin32(unsigned int init_value);
~SemaphoreWin32();
void Signal() override;
bool Wait(int timeout) override;
private:
HANDLE m_Sem;
};
#endif // ASURA_THREAD_WIN32
namespace_end
namespace_end
#endif
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