_mutex_win32.h

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/* === S T A R T =========================================================== */

#ifndef __ETL__MUTEX_WIN32_H_
#define __ETL__MUTEX_WIN32_H_

/* === H E A D E R S ======================================================= */

#include <windows.h>
// extern HANDLE CreateMutex(NULL, FALSE, NULL);
// extern CloseHandle(handle);
// extern WaitForSingleObject(handle, INFINITE);
// extern ReleaseMutex(handle);

/* === M A C R O S ========================================================= */


/* === C L A S S E S & S T R U C T S ======================================= */

_ETL_BEGIN_NAMESPACE

class mutex
{
    HANDLE handle;
public:

    mutex()
    { handle = CreateMutex(NULL, FALSE, NULL); }

    ~mutex()
    { CloseHandle(handle); }

    class lock
    {
        mutex *_mtx;
    public:
        lock(mutex &x):_mtx(&x) { _mtx->lock_mutex(); }
        ~lock() { _mtx->unlock_mutex(); }
        mutex &get() { return *_mtx; }
    };

    void lock_mutex(void)
    { WaitForSingleObject(handle, INFINITE); }

    bool try_lock_mutex(void)
    { return WaitForSingleObject(handle, INFINITE)==WAIT_FAILED; }

    void unlock_mutex(void)
    { ReleaseMutex(handle); }
};

_ETL_END_NAMESPACE

/* === E X T E R N S ======================================================= */

/* === E N D =============================================================== */

#endif