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/*
* Copyright (C) 2008 Apple 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:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
* 3. Neither the name of Apple Computer, Inc. ("Apple") 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 APPLE AND ITS 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 APPLE OR ITS 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 "RegisterFile.h"
#include "ConservativeRoots.h"
#include "Interpreter.h"
#include "JSGlobalData.h"
#include "JSGlobalObject.h"
namespace JSC {
static size_t committedBytesCount = 0;
static Mutex& registerFileStatisticsMutex()
{
DEFINE_STATIC_LOCAL(Mutex, staticMutex, ());
return staticMutex;
}
RegisterFile::~RegisterFile()
{
void* base = m_reservation.base();
m_reservation.decommit(base, reinterpret_cast<intptr_t>(m_commitEnd) - reinterpret_cast<intptr_t>(base));
addToCommittedByteCount(-(reinterpret_cast<intptr_t>(m_commitEnd) - reinterpret_cast<intptr_t>(base)));
m_reservation.deallocate();
}
void RegisterFile::gatherConservativeRoots(ConservativeRoots& conservativeRoots)
{
for (Register* it = start(); it != end(); ++it) {
JSValue v = it->jsValue();
if (!v.isCell())
continue;
conservativeRoots.add(v.asCell());
}
}
void RegisterFile::releaseExcessCapacity()
{
m_reservation.decommit(m_start, reinterpret_cast<intptr_t>(m_commitEnd) - reinterpret_cast<intptr_t>(m_start));
addToCommittedByteCount(-(reinterpret_cast<intptr_t>(m_commitEnd) - reinterpret_cast<intptr_t>(m_start)));
m_commitEnd = m_start;
m_maxUsed = m_start;
}
void RegisterFile::setGlobalObject(JSGlobalObject* globalObject)
{
m_globalObject.set(globalObject->globalData(), globalObject, &m_globalObjectOwner, this);
}
JSGlobalObject* RegisterFile::globalObject()
{
return m_globalObject.get();
}
void RegisterFile::initializeThreading()
{
registerFileStatisticsMutex();
}
size_t RegisterFile::committedByteCount()
{
MutexLocker locker(registerFileStatisticsMutex());
return committedBytesCount;
}
void RegisterFile::addToCommittedByteCount(long byteCount)
{
MutexLocker locker(registerFileStatisticsMutex());
ASSERT(static_cast<long>(committedBytesCount) + byteCount > -1);
committedBytesCount += byteCount;
}
} // namespace JSC
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