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Diffstat (limited to 'src/system/Qt3DSMemoryTracker.cpp')
| -rw-r--r-- | src/system/Qt3DSMemoryTracker.cpp | 164 |
1 files changed, 164 insertions, 0 deletions
diff --git a/src/system/Qt3DSMemoryTracker.cpp b/src/system/Qt3DSMemoryTracker.cpp new file mode 100644 index 0000000..8aef951 --- /dev/null +++ b/src/system/Qt3DSMemoryTracker.cpp @@ -0,0 +1,164 @@ +/**************************************************************************** +** +** 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 |