JavaScriptCore-1218.tar.gz

[apple/javascriptcore.git] / heap / CopyVisitor.cpp

diff --git a/heap/CopyVisitor.cpp b/heap/CopyVisitor.cpp
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+/*
+ * Copyright (C) 2012 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. 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 INC. 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 "CopyVisitor.h"
+
+#include "CopyVisitorInlines.h"
+#include "CopyWorkList.h"
+#include "GCThreadSharedData.h"
+#include "JSCell.h"
+#include "JSObject.h"
+#include <wtf/Threading.h>
+
+namespace JSC {
+
+CopyVisitor::CopyVisitor(GCThreadSharedData& shared)
+    : m_shared(shared)
+{
+}
+
+void CopyVisitor::copyFromShared()
+{
+    size_t next, end;
+    m_shared.getNextBlocksToCopy(next, end);
+    while (next < end) {
+        for (; next < end; ++next) {
+            CopiedBlock* block = m_shared.m_blocksToCopy[next];
+            if (!block->hasWorkList())
+                continue;
+
+            CopyWorkList& workList = block->workList();
+            for (CopyWorkList::iterator it = workList.begin(); it != workList.end(); ++it)
+                visitCell(*it);
+
+            ASSERT(!block->liveBytes());
+            m_shared.m_copiedSpace->recycleEvacuatedBlock(block);
+        }
+        m_shared.getNextBlocksToCopy(next, end);
+    }
+    ASSERT(next == end);
+}
+
+} // namespace JSC