1 files changed, 93 insertions, 0 deletions
diff --git a/Source/JavaScriptCore/interpreter/RegisterFile.cpp b/Source/JavaScriptCore/interpreter/RegisterFile.cpp
new file mode 100644
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+++ b/Source/JavaScriptCore/interpreter/RegisterFile.cpp
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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 "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::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 = globalObject;
+}
+
+bool RegisterFile::clearGlobalObject(JSGlobalObject* globalObject)
+{
+    return m_globalObject.clear(globalObject);
+}
+
+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