| /* |
| * 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 |