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/*
** Copyright (c) 2021 Advanced Micro Devices, Inc. All rights reserved.
**
** Permission is hereby granted, free of charge, to any person obtaining a
** copy of this software and associated documentation files (the "Software"),
** to deal in the Software without restriction, including without limitation
** the rights to use, copy, modify, merge, publish, distribute, sublicense,
** and/or sell copies of the Software, and to permit persons to whom the
** Software is furnished to do so, subject to the following conditions:
**
** The above copyright notice and this permission notice shall be included in
** all copies or substantial portions of the Software.
**
** THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
** IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
** FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
** AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
** LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
** FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
** DEALINGS IN THE SOFTWARE.
*/
#ifndef GFXRECON_INTERCEPTION_UTILS_REF_TRACKER_COUNTER_H
#define GFXRECON_INTERCEPTION_UTILS_REF_TRACKER_COUNTER_H
#include "util/defines.h"
#include <mutex>
#include <map>
#include <Windows.h>
GFXRECON_BEGIN_NAMESPACE(gfxrecon)
GFXRECON_BEGIN_NAMESPACE(util)
GFXRECON_BEGIN_NAMESPACE(interception)
//-----------------------------------------------------------------------------
/// This class helps detect re-entrance problems.
//-----------------------------------------------------------------------------
class RefTrackerCounter
{
public:
//-----------------------------------------------------------------------------
/// Default constructor
//-----------------------------------------------------------------------------
RefTrackerCounter();
//-----------------------------------------------------------------------------
/// Destructor
//-----------------------------------------------------------------------------
~RefTrackerCounter();
//-----------------------------------------------------------------------------
/// Constructor taking a mutex pointer.
/// \param pM The mutex pointer.
//-----------------------------------------------------------------------------
RefTrackerCounter(std::mutex* pM);
//-----------------------------------------------------------------------------
/// Use an external mutex rather than once created by this class.
/// \param pM The external mutex to use.
//-----------------------------------------------------------------------------
void UseExternalMutex(std::mutex* pM);
//-----------------------------------------------------------------------------
/// Pre-increment operator
//-----------------------------------------------------------------------------
void Increment();
//-----------------------------------------------------------------------------
/// Pre-decrement operator
//-----------------------------------------------------------------------------
void Decrement();
//-----------------------------------------------------------------------------
/// Post-increment operator
//-----------------------------------------------------------------------------
void operator++();
//-----------------------------------------------------------------------------
/// Post-decrement operator
//-----------------------------------------------------------------------------
void operator--();
//-----------------------------------------------------------------------------
/// Pre-increment operator
//-----------------------------------------------------------------------------
void operator++(int);
//-----------------------------------------------------------------------------
/// Pre-decrement operator
//-----------------------------------------------------------------------------
void operator--(int);
//-----------------------------------------------------------------------------
/// Equality operator
/// \param v The other RefTrackerCounter's count.
/// \return True if this count is equal to the other's.
//-----------------------------------------------------------------------------
bool operator==(UINT32 v);
//-----------------------------------------------------------------------------
/// Greater than operator.
/// \param v The other RefTrackerCounter's count.
/// \return True if this count is greater than the other's.
//-----------------------------------------------------------------------------
bool operator>(UINT32 v);
//-----------------------------------------------------------------------------
/// Return the current reference count.
/// \return The current reference count.
//-----------------------------------------------------------------------------
UINT32 GetRef();
private:
/// If using an external mutex (by using the constructor passing in a mutex or calling UseExternalMutex())
bool is_using_external_mutex_;
/// Pointer to a mutex to ensure the reference counter is only updated by one thread at a time
std::mutex* mutex_;
/// Map of reference count and thread ID.
std::map<UINT32, int> map_inside_wrapper_;
};
GFXRECON_END_NAMESPACE(interception)
GFXRECON_END_NAMESPACE(util)
GFXRECON_END_NAMESPACE(gfxrecon)
#endif // GFXRECON_INTERCEPTION_UTILS_REF_TRACKER_COUNTER_H
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