/* Copyright (C) 2013 Interactive Brokers LLC. All rights reserved. This code is subject to the terms
 * and conditions of the IB API Non-Commercial License or the IB API Commercial License, as applicable. */

#include "StdAfx.h"
#include "EMutex.h"

EMutex::EMutex()
{
#if defined(IB_POSIX)
    pthread_mutex_init(&cs, NULL);
#elif defined(IB_WIN32)
	InitializeCriticalSection(&cs);
#else
#   error "Not implemented on this platform"
#endif
}

EMutex::~EMutex(void)
{
	Leave();
#if defined(IB_POSIX)
    pthread_mutex_destroy(&cs);
#elif defined(IB_WIN32)
	DeleteCriticalSection(&cs);
#else
#   error "Not implemented on this platform"
#endif
}

bool EMutex::TryEnter()
{
#if defined(IB_POSIX)
    return pthread_mutex_trylock(&cs) == 0;
#elif defined(IB_WIN32)
	return TryEnterCriticalSection(&cs);
#else
#   error "Not implemented on this platform"
#endif
}

void EMutex::Enter() {
#if defined(IB_POSIX)
    pthread_mutex_lock(&cs);
#elif defined(IB_WIN32)
	EnterCriticalSection(&cs);
#else
#   error "Not implemented on this platform"
#endif
}

void EMutex::Leave() {
#if defined(IB_POSIX)
    pthread_mutex_unlock(&cs);
#elif defined(IB_WIN32)
	LeaveCriticalSection(&cs);
#else
#   error "Not implemented on this platform"
#endif
}