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/****************************************************************************
**
** Copyright (C) 1993-2009 NVIDIA Corporation.
** Copyright (C) 2017 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of Qt 3D Studio.
**
** $QT_BEGIN_LICENSE:GPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 or (at your option) any later version
** approved by the KDE Free Qt Foundation. The licenses are as published by
** the Free Software Foundation and appearing in the file LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "SystemPrefix.h"
//==============================================================================
// Includes
//==============================================================================
#include "Qt3DSMemoryTracker.h"
#include "foundation/Qt3DSLogging.h"
//==============================================================================
// Namespace
//==============================================================================
namespace Q3DStudio {
//==============================================================================
/**
* Construct and reset the tracker.
*/
CMemoryTracker::CMemoryTracker()
: m_TrackingOverhead(0)
{
Q3DStudio_memset(&m_TrackingHashBin, 0, sizeof(m_TrackingHashBin));
CMemoryStatistics::Overhead() += sizeof(m_TrackingHashBin);
}
//==============================================================================
/**
* Destructor
*/
CMemoryTracker::~CMemoryTracker()
{
CMemoryStatistics::Overhead() -= sizeof(m_TrackingHashBin);
}
//==============================================================================
/**
* Add information about allocation
* @param inPtr contains info about a new allocation
*/
void CMemoryTracker::Remember(SMemoryInfo *inPointer)
{
if (inPointer) {
// Update global tracking
m_TrackingOverhead += sizeof(SMemoryInfo);
// Locate a suitable hashbin
size_t theHashBin =
(reinterpret_cast<size_t>(inPointer) >> 2) % Q3DStudio_MEMORY_LINETRACKINGSIZE;
size_t theStartHashBin = theHashBin;
while (m_TrackingHashBin[theHashBin]) {
++theHashBin;
if (theHashBin >= Q3DStudio_MEMORY_LINETRACKINGSIZE)
theHashBin = 0;
if (theHashBin == theStartHashBin) {
// We've run out of room in the hashbin.
// Abort and increase the bin size.
qCCritical(qt3ds::OUT_OF_MEMORY)
<< "Memory Tracker Error: Ran out of room in tracker hashbin "
<< Q3DStudio_MEMORY_LINETRACKINGSIZE;
// exit( -1 );
}
}
// Set WatchGuard and store the pointer in the hash bin
inPointer->m_DogTag = TRACKER_DOGTAG;
m_TrackingHashBin[theHashBin] = inPointer;
}
}
//==============================================================================
/**
* Remove information on an allocation
* @param inPtr contains info about the allocation we are releasing
*/
void CMemoryTracker::Forget(SMemoryInfo *inPointer)
{
if (inPointer) {
// Update global tracking
m_TrackingOverhead -= sizeof(SMemoryInfo);
// Locate the pointer in the hash bin
size_t theHashBin = Q3DStudio_max<size_t>(0, (reinterpret_cast<size_t>(inPointer) >> 2)
% Q3DStudio_MEMORY_LINETRACKINGSIZE);
size_t theStartHashBin = theHashBin;
while (m_TrackingHashBin[theHashBin] != inPointer) {
++theHashBin;
if (theHashBin >= Q3DStudio_MEMORY_LINETRACKINGSIZE)
theHashBin = 0;
if (theHashBin == theStartHashBin) {
// We were unable to locate the pointer in the hash bin.
// This is really bad, but not catastrophic
qCWarning(qt3ds::OUT_OF_MEMORY)
<< "Memory Tracker Warning. Can't find pointer in tracker hashbin";
return;
}
}
// Verify watch guard. Something is trashing memory if this call fails.
Q3DStudio_ASSERT(m_TrackingHashBin[theHashBin]->m_DogTag == TRACKER_DOGTAG);
// Clear the pointer from the hash bin
m_TrackingHashBin[theHashBin] = NULL;
}
}
//==============================================================================
/**
* Dump the memory list stored in the hash bin.
* @param inFileName the report filename or NULL to dump to the logger
*/
INT32 CMemoryTracker::Report(IStream *inStream /*=NULL*/)
{
INT32 theTotalBytes = 0;
CHAR theLine[256];
for (INT32 theBinIndex = 0; theBinIndex < Q3DStudio_MEMORY_LINETRACKINGSIZE; ++theBinIndex) {
if (m_TrackingHashBin[theBinIndex]) {
CMemoryTracker::SMemoryInfo *theInfo = m_TrackingHashBin[theBinIndex];
Q3DStudio_sprintf(theLine, sizeof(theLine), "0x%p, %8d, %s, %s(%hd)\n", theInfo,
theInfo->m_Size, theInfo->m_Type, theInfo->m_File, theInfo->m_Line);
CMemoryStatistics::Report(inStream, theLine);
theTotalBytes += theInfo->m_Size;
}
}
return theTotalBytes;
}
} // namespace Q3DStudio
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