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/*
* Copyright (c) 2008-2017, NVIDIA CORPORATION. All rights reserved.
*
* NVIDIA CORPORATION and its licensors retain all intellectual property
* and proprietary rights in and to this software, related documentation
* and any modifications thereto. Any use, reproduction, disclosure or
* distribution of this software and related documentation without an express
* license agreement from NVIDIA CORPORATION is strictly prohibited.
*/
// Copyright (c) 2004-2008 AGEIA Technologies, Inc. All rights reserved.
// Copyright (c) 2001-2004 NovodeX AG. All rights reserved.
#include "ReadCheck.h"
#include "ApexRWLockable.h"
#include "PsThread.h"
#include "ApexSDKIntl.h"
namespace nvidia
{
namespace apex
{
ReadCheck::ReadCheck(const ApexRWLockable* scene, const char* functionName)
: mLockable(scene), mName(functionName), mErrorCount(0)
{
if (GetApexSDK()->isConcurrencyCheckEnabled() && mLockable && !mLockable->isEnabled())
{
if (!mLockable->startRead() && !mLockable->isEnabled())
{
APEX_INTERNAL_ERROR("An API read call (%s) was made from thread %d but acquireReadLock() was not called first, note that "
"when ApexSDKDesc::enableConcurrencyCheck is enabled all API reads and writes must be "
"wrapped in the appropriate locks.", mName, uint32_t(nvidia::Thread::getId()));
}
// Record the NpScene read/write error counter which is
// incremented any time a NpScene::startWrite/startRead fails
// (see destructor for additional error checking based on this count)
mErrorCount = mLockable->getReadWriteErrorCount();
}
}
ReadCheck::~ReadCheck()
{
if (GetApexSDK()->isConcurrencyCheckEnabled() && mLockable)
{
// By checking if the NpScene::mConcurrentErrorCount has been incremented
// we can detect if an erroneous read/write was performed during
// this objects lifetime. In this case we also print this function's
// details so that the user can see which two API calls overlapped
if (mLockable->getReadWriteErrorCount() != mErrorCount && !mLockable->isEnabled())
{
APEX_INTERNAL_ERROR("Leaving %s on thread %d, an API overlapping write on another thread was detected.", mName, uint32_t(nvidia::Thread::getId()));
}
mLockable->stopRead();
}
}
}
}
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