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/*
* Copyright (C) 2012 Google Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "MemoryInstrumentation.h"
#include <wtf/MemoryObjectInfo.h>
#if DEBUG_POINTER_INSTRUMENTATION
#include <stdio.h>
#include <wtf/Assertions.h>
#endif
namespace WTF {
MemoryInstrumentation::MemoryInstrumentation(MemoryInstrumentationClient* client)
: m_client(client)
, m_rootObjectInfo(adoptPtr(new MemoryObjectInfo(this, 0)))
{
}
MemoryInstrumentation::~MemoryInstrumentation()
{
}
MemoryObjectType MemoryInstrumentation::getObjectType(MemoryObjectInfo* objectInfo)
{
return objectInfo->objectType();
}
void MemoryInstrumentation::callReportObjectInfo(MemoryObjectInfo* memoryObjectInfo, const void* pointer, MemoryObjectType objectType, size_t objectSize)
{
memoryObjectInfo->reportObjectInfo(pointer, objectType, objectSize);
}
MemoryInstrumentation::InstrumentedPointerBase::InstrumentedPointerBase(MemoryObjectInfo* memoryObjectInfo)
: m_ownerObjectType(memoryObjectInfo->objectType())
{
#if DEBUG_POINTER_INSTRUMENTATION
m_callStackSize = s_maxCallStackSize;
WTFGetBacktrace(m_callStack, &m_callStackSize);
#endif
}
void MemoryInstrumentation::InstrumentedPointerBase::process(MemoryInstrumentation* memoryInstrumentation)
{
MemoryObjectInfo memoryObjectInfo(memoryInstrumentation, m_ownerObjectType);
const void* originalPointer = callReportMemoryUsage(&memoryObjectInfo);
const void* pointer = memoryObjectInfo.reportedPointer();
ASSERT(pointer);
if (pointer != originalPointer && memoryInstrumentation->visited(pointer))
return;
memoryInstrumentation->countObjectSize(pointer, memoryObjectInfo.objectType(), memoryObjectInfo.objectSize());
if (!memoryInstrumentation->checkCountedObject(pointer)) {
#if DEBUG_POINTER_INSTRUMENTATION
fputs("Unknown object counted:\n", stderr);
WTFPrintBacktrace(m_callStack, m_callStackSize);
#endif
}
}
void MemoryClassInfo::init(const void* pointer, MemoryObjectType objectType, size_t actualSize)
{
m_memoryObjectInfo->reportObjectInfo(pointer, objectType, actualSize);
m_memoryInstrumentation = m_memoryObjectInfo->memoryInstrumentation();
m_objectType = m_memoryObjectInfo->objectType();
}
void MemoryClassInfo::addRawBuffer(const void* const& buffer, size_t size)
{
m_memoryInstrumentation->addRawBuffer(buffer, m_objectType, size);
}
void MemoryClassInfo::addPrivateBuffer(size_t size, MemoryObjectType ownerObjectType)
{
if (!size)
return;
if (!ownerObjectType)
ownerObjectType = m_objectType;
m_memoryInstrumentation->countObjectSize(0, ownerObjectType, size);
}
} // namespace WTF
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