JavaScriptCore-1218.tar.gz

[apple/javascriptcore.git] / heap / HandleBlockInlines.h

diff --git a/heap/HandleBlockInlines.h b/heap/HandleBlockInlines.h
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+/*
+ * Copyright (C) 2013 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.
+ */
+
+#ifndef HandleBlockInlines_h
+#define HandleBlockInlines_h
+
+#include "BlockAllocator.h"
+#include "HandleBlock.h"
+
+namespace JSC {
+
+inline HandleBlock* HandleBlock::create(DeadBlock* block, HandleSet* handleSet)
+{
+    Region* region = block->region();
+    return new (NotNull, block) HandleBlock(region, handleSet);
+}
+
+inline HandleBlock::HandleBlock(Region* region, HandleSet* handleSet)
+    : HeapBlock<HandleBlock>(region)
+    , m_handleSet(handleSet)
+{
+}
+
+inline char* HandleBlock::payloadEnd()
+{
+    return reinterpret_cast<char*>(this) + region()->blockSize();
+}
+
+inline char* HandleBlock::payload()
+{
+    return reinterpret_cast<char*>(this) + WTF::roundUpToMultipleOf<sizeof(double)>(sizeof(HandleBlock));
+}
+
+inline HandleNode* HandleBlock::nodes()
+{
+    return reinterpret_cast<HandleNode*>(payload());
+}
+
+inline HandleNode* HandleBlock::nodeAtIndex(unsigned i)
+{
+    ASSERT(i < nodeCapacity());
+    return &nodes()[i];
+}
+
+inline unsigned HandleBlock::nodeCapacity()
+{
+    return (payloadEnd() - payload()) / sizeof(HandleNode);
+}
+
+} // namespace JSC
+    
+#endif // HandleBlockInlines_h