Move Source/WTF/wtf to Source/wtf

Source/WTF/wtf/MemoryInstrumentation.cpp

-/*
- * 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>
-#include <string.h>
-
-#if DEBUG_POINTER_INSTRUMENTATION
-#include <stdio.h>
-#include <wtf/Assertions.h>
-#endif
-
-namespace WTF {
-
-MemoryInstrumentation::MemoryInstrumentation(MemoryInstrumentationClient* client)
-    : m_client(client)
-{
-}
-
-MemoryInstrumentation::~MemoryInstrumentation()
-{
-}
-
-void MemoryInstrumentation::reportEdge(const void* target, const char* name, MemberType memberType)
-{
-    m_client->reportEdge(target, name, memberType);
-}
-
-MemoryObjectType MemoryInstrumentation::getObjectType(MemoryObjectInfo* objectInfo)
-{
-    return objectInfo->objectType();
-}
-
-void MemoryInstrumentation::reportLinkToBuffer(const void* buffer, MemoryObjectType ownerObjectType, size_t size, const char* className, const char* edgeName)
-{
-    MemoryObjectInfo memoryObjectInfo(this, ownerObjectType, 0);
-    memoryObjectInfo.reportObjectInfo(buffer, ownerObjectType, size);
-    memoryObjectInfo.setClassName(className);
-    m_client->reportLeaf(memoryObjectInfo, edgeName);
-}
-
-MemoryInstrumentation::WrapperBase::WrapperBase(MemoryObjectType objectType, const void* pointer)
-    : m_pointer(pointer)
-    , m_ownerObjectType(objectType)
-{
-#if DEBUG_POINTER_INSTRUMENTATION
-    m_callStackSize = s_maxCallStackSize;
-    WTFGetBacktrace(m_callStack, &m_callStackSize);
-#endif
-}
-
-void MemoryInstrumentation::WrapperBase::process(MemoryInstrumentation* memoryInstrumentation)
-{
-    processPointer(memoryInstrumentation, false);
-}
-
-void MemoryInstrumentation::WrapperBase::processPointer(MemoryInstrumentation* memoryInstrumentation, bool isRoot)
-{
-    MemoryObjectInfo memoryObjectInfo(memoryInstrumentation, m_ownerObjectType, m_pointer);
-    if (isRoot)
-        memoryObjectInfo.markAsRoot();
-    callReportMemoryUsage(&memoryObjectInfo);
-
-    const void* realAddress = memoryObjectInfo.reportedPointer();
-    ASSERT(realAddress);
-
-    if (memoryObjectInfo.firstVisit()) {
-        memoryInstrumentation->countObjectSize(realAddress, memoryObjectInfo.objectType(), memoryObjectInfo.objectSize());
-        memoryInstrumentation->m_client->reportNode(memoryObjectInfo);
-    }
-
-    if (realAddress != m_pointer)
-        memoryInstrumentation->m_client->reportBaseAddress(m_pointer, realAddress);
-
-    if (memoryObjectInfo.firstVisit()
-        && !memoryObjectInfo.customAllocation()
-        && !memoryInstrumentation->checkCountedObject(realAddress)) {
-#if DEBUG_POINTER_INSTRUMENTATION
-        fputs("Unknown object counted:\n", stderr);
-        WTFPrintBacktrace(m_callStack, m_callStackSize);
-#endif
-    }
-}
-
-void MemoryInstrumentation::WrapperBase::processRootObjectRef(MemoryInstrumentation* memoryInstrumentation)
-{
-    MemoryObjectInfo memoryObjectInfo(memoryInstrumentation, m_ownerObjectType, m_pointer);
-    memoryObjectInfo.markAsRoot();
-    callReportMemoryUsage(&memoryObjectInfo);
-
-    ASSERT(m_pointer == memoryObjectInfo.reportedPointer());
-    memoryInstrumentation->m_client->reportNode(memoryObjectInfo);
-}
-
-#if COMPILER(MSVC)
-static const char* className(const char* functionName, char* buffer, const int maxLength)
-{
-    // MSVC generates names like this: 'WTF::FN<class WebCore::SharedBuffer>::fn'
-    static const char prefix[] = "WTF::FN<";
-    ASSERT(!strncmp(functionName, prefix, sizeof(prefix) - 1));
-    const char* begin = strchr(functionName, ' ');
-    if (!begin) { // Fallback.
-        strncpy(buffer, functionName, maxLength);
-        buffer[maxLength - 1] = 0;
-        return buffer;
-    }
-    const char* end = strrchr(begin, '>');
-    ASSERT(end);
-    int length = end - begin;
-    length = length < maxLength ? length : maxLength - 1;
-    memcpy(buffer, begin, length);
-    buffer[length] = 0;
-    return buffer;
-}
-#else
-static const char* className(const char* functionName, char* buffer, const int maxLength)
-{
-#if COMPILER(CLANG)
-    static const char prefix[] = "[T =";
-#elif COMPILER(GCC)
-    static const char prefix[] = "[with T =";
-#else
-    static const char prefix[] = "T =";
-#endif
-    const char* begin = strstr(functionName, prefix);
-    if (!begin) { // Fallback.
-        strncpy(buffer, functionName, maxLength);
-        buffer[maxLength - 1] = 0;
-        return buffer;
-    }
-    begin += sizeof(prefix);
-    const char* end = strchr(begin, ']');
-    ASSERT(end);
-    int length = end - begin;
-    length = length < maxLength ? length : maxLength - 1;
-    memcpy(buffer, begin, length);
-    buffer[length] = 0;
-    return buffer;
-}
-#endif
-
-void MemoryClassInfo::callReportObjectInfo(MemoryObjectInfo* memoryObjectInfo, const void* objectAddress, const char* stringWithClassName, MemoryObjectType objectType, size_t actualSize)
-{
-    memoryObjectInfo->reportObjectInfo(objectAddress, objectType, actualSize);
-    char buffer[256];
-    memoryObjectInfo->setClassName(className(stringWithClassName, buffer, sizeof(buffer)));
-}
-
-void MemoryClassInfo::init(const void* objectAddress, const char* stringWithClassName, MemoryObjectType objectType, size_t actualSize)
-{
-    callReportObjectInfo(m_memoryObjectInfo, objectAddress, stringWithClassName, objectType, actualSize);
-    m_memoryInstrumentation = m_memoryObjectInfo->memoryInstrumentation();
-    m_objectType = m_memoryObjectInfo->objectType();
-    m_skipMembers = !m_memoryObjectInfo->firstVisit();
-}
-
-void MemoryClassInfo::addRawBuffer(const void* buffer, size_t size, const char* className, const char* edgeName)
-{
-    if (!m_skipMembers)
-        m_memoryInstrumentation->addRawBuffer(buffer, m_objectType, size, className, edgeName);
-}
-
-void MemoryClassInfo::addPrivateBuffer(size_t size, MemoryObjectType ownerObjectType, const char* className, const char* edgeName)
-{
-    if (!size)
-        return;
-    if (m_skipMembers)
-        return;
-    if (!ownerObjectType)
-        ownerObjectType = m_objectType;
-    m_memoryInstrumentation->countObjectSize(0, ownerObjectType, size);
-    m_memoryInstrumentation->reportLinkToBuffer(0, ownerObjectType, size, className, edgeName);
-}
-
-void MemoryClassInfo::setCustomAllocation(bool customAllocation)
-{
-    m_memoryObjectInfo->setCustomAllocation(customAllocation);
-}
-
-} // namespace WTF