winmutex.h

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/********************************************************************************************
* Twitch Broadcasting SDK
*
* This software is supplied under the terms of a license agreement with Twitch Interactive, Inc. and
* may not be copied or used except in accordance with the terms of that agreement
* Copyright (c) 2012-2015 Twitch Interactive, Inc.
*********************************************************************************************/

#pragma once

#include "twitchsdk/core/mutex.h"

#include <windows.h>


namespace ttv
{
    class WinMutex;
    class WinConditionMutex;
    class WinMutexFactory;
}

class ttv::WinMutex : public IMutex
{
public:
    WinMutex();
    virtual ~WinMutex();

    virtual TTV_ErrorCode Lock() override;
    virtual TTV_ErrorCode TryLock() override;
    virtual TTV_ErrorCode Unlock() override;

private:
    TTV_ErrorCode Destroy();

    CRITICAL_SECTION mCriticalSection;
    bool mLocked;
};


class ttv::WinConditionMutex : public IConditionMutex
{
public:
    WinConditionMutex();
    virtual ~WinConditionMutex();

    virtual TTV_ErrorCode Lock() override;
    virtual TTV_ErrorCode TryLock() override;
    virtual TTV_ErrorCode Unlock() override;
    virtual TTV_ErrorCode Wait() override;
    virtual TTV_ErrorCode WaitFor(uint64_t timeoutMilliseconds) override;
    virtual TTV_ErrorCode Signal() override;
    virtual TTV_ErrorCode Broadcast() override;

private:
    TTV_ErrorCode Destroy();

    CRITICAL_SECTION mCriticalSection;
    CONDITION_VARIABLE mConditionVariable;
    bool mLocked;
};


class ttv::WinMutexFactory : public IMutexFactory
{
public:
#pragma push_macro("CreateMutex")
#undef CreateMutex
    virtual TTV_ErrorCode CreateMutex(std::shared_ptr<IMutex>& result) override;
#pragma pop_macro("CreateMutex")

    virtual TTV_ErrorCode CreateConditionMutex(std::shared_ptr<IConditionMutex>& result) override;
};