JavaScriptCore-7600.1.4.9.tar.gz

[apple/javascriptcore.git] / bytecode / ProfiledCodeBlockJettisoningWatchpoint.cpp

diff --git a/bytecode/ProfiledCodeBlockJettisoningWatchpoint.cpp b/bytecode/ProfiledCodeBlockJettisoningWatchpoint.cpp
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+++ b/bytecode/ProfiledCodeBlockJettisoningWatchpoint.cpp
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+/*
+ * Copyright (C) 2013, 2014 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. ``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. 
+ */
+
+#include "config.h"
+#include "ProfiledCodeBlockJettisoningWatchpoint.h"
+
+#if ENABLE(DFG_JIT)
+
+#include "CodeBlock.h"
+#include "DFGCommon.h"
+#include "DFGExitProfile.h"
+#include "JSCInlines.h"
+
+namespace JSC {
+
+void ProfiledCodeBlockJettisoningWatchpoint::fireInternal()
+{
+    if (DFG::shouldShowDisassembly()) {
+        dataLog(
+            "Firing profiled watchpoint ", RawPointer(this), " on ", *m_codeBlock, " due to ",
+            m_exitKind, " at ", m_codeOrigin, "\n");
+    }
+    
+    // FIXME: Maybe this should call alternative().
+    // https://bugs.webkit.org/show_bug.cgi?id=123677
+    CodeBlock* machineBaselineCodeBlock = m_codeBlock->baselineAlternative();
+    CodeBlock* sourceBaselineCodeBlock =
+        baselineCodeBlockForOriginAndBaselineCodeBlock(
+            m_codeOrigin, machineBaselineCodeBlock);
+    
+    if (sourceBaselineCodeBlock) {
+        sourceBaselineCodeBlock->addFrequentExitSite(
+            DFG::FrequentExitSite(
+                m_codeOrigin.bytecodeIndex, m_exitKind,
+                exitingJITTypeFor(m_codeBlock->jitType())));
+    }
+    
+    m_codeBlock->jettison(Profiler::JettisonDueToProfiledWatchpoint, CountReoptimization);
+    
+    if (isOnList())
+        remove();
+}
+
+} // namespace JSC
+
+#endif // ENABLE(DFG_JIT)