ppsspp/base/mutex.h

#pragma once
// Simple cross platform mutex implementation.
// Similar to the new C++11 api.
// Windows and pthreads implementations in one.

#ifdef _WIN32
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#else
#include <pthread.h>
#include <errno.h>
#endif


class recursive_mutex {
#ifdef _WIN32
	typedef CRITICAL_SECTION mutexType;
#else
	typedef pthread_mutex_t mutexType;
#endif
public:
	recursive_mutex() {
#ifdef _WIN32
		InitializeCriticalSection(&mut_);
#else
		pthread_mutex_init(&mut_, NULL);
#endif
	}
	~recursive_mutex() {
#ifdef _WIN32
		DeleteCriticalSection(&mut_);
#else
		pthread_mutex_destroy(&mut_);
#endif
	}
	bool trylock() {
#ifdef _WIN32
		return TryEnterCriticalSection(&mut_) == TRUE;
#else
		return pthread_mutex_trylock(&mut_) != EBUSY;
#endif
	}
	void lock() {
#ifdef _WIN32
		EnterCriticalSection(&mut_);
#else
		pthread_mutex_lock(&mut_);
#endif
	}
	void unlock() {
#ifdef _WIN32
		LeaveCriticalSection(&mut_);
#else
		pthread_mutex_unlock(&mut_);
#endif
	}

private:
	mutexType mut_;
};

class lock_guard {
public:
	lock_guard(recursive_mutex &mtx) : mtx_(mtx) {mtx_.lock();}
	~lock_guard() {mtx_.unlock();}

private:
	recursive_mutex &mtx_;
};

#undef p
#undef MIN
#undef MAX
#undef min
#undef max
#undef DrawText
#undef itoa