JavaScriptCore-7601.1.46.3.tar.gz

[apple/javascriptcore.git] / runtime / BasicBlockLocation.h

diff --git a/runtime/BasicBlockLocation.h b/runtime/BasicBlockLocation.h
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+/*
+ * Copyright (C) 2014 Apple Inc. All rights reserved.
+ * Copyright (C) 2014 Saam Barati. <saambarati1@gmail.com>
+ *
+ * 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. ``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
+ * 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 BasicBlockLocation_h
+#define BasicBlockLocation_h
+
+#include "MacroAssembler.h"
+#include <wtf/RefCounted.h>
+#include <wtf/RefPtr.h>
+#include <wtf/Vector.h>
+
+namespace JSC {
+
+class CCallHelpers;
+class LLIntOffsetsExtractor;
+
+class BasicBlockLocation {
+public:
+    typedef std::pair<int, int> Gap;
+
+    BasicBlockLocation(int startOffset = -1, int endOffset = -1);
+
+    int startOffset() const { return m_startOffset; }
+    int endOffset() const { return m_endOffset; }
+    void setStartOffset(int startOffset) { m_startOffset = startOffset; }
+    void setEndOffset(int endOffset) { m_endOffset = endOffset; }
+    bool hasExecuted() const { return m_hasExecuted; }
+    void insertGap(int, int);
+    Vector<Gap> getExecutedRanges() const;
+    JS_EXPORT_PRIVATE void dumpData() const;
+#if ENABLE(JIT)
+    void emitExecuteCode(CCallHelpers&, MacroAssembler::RegisterID) const;
+#endif
+
+private:
+    friend class LLIntOffsetsExtractor;
+
+    int m_startOffset;
+    int m_endOffset;
+    bool m_hasExecuted;
+    Vector<Gap> m_gaps;
+};
+
+} // namespace JSC
+
+#endif // BasicBlockLocation_h