webkitgtk-2.16.5HEADwebkitgtk-2.16.5master

1 files changed, 53 insertions, 0 deletions

diff --git a/Source/JavaScriptCore/dfg/DFGPlanInlines.h b/Source/JavaScriptCore/dfg/DFGPlanInlines.h
new file mode 100644
index 000000000..151f089db
--- /dev/null
+++ b/Source/JavaScriptCore/dfg/DFGPlanInlines.h
@@ -0,0 +1,53 @@
+/*
+ * Copyright (C) 2017 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. 
+ */
+
+#pragma once
+
+#include "DFGPlan.h"
+
+namespace JSC { namespace DFG {
+
+#if ENABLE(DFG_JIT)
+
+template<typename Func>
+void Plan::iterateCodeBlocksForGC(const Func& func)
+{
+    if (!isKnownToBeLiveDuringGC())
+        return;
+    
+    // Compilation writes lots of values to a CodeBlock without performing
+    // an explicit barrier. So, we need to be pessimistic and assume that
+    // all our CodeBlocks must be visited during GC.
+
+    func(codeBlock);
+    func(codeBlock->alternative());
+    if (profiledDFGCodeBlock)
+        func(profiledDFGCodeBlock);
+}
+
+#endif // ENABLE(DFG_JIT)
+
+} } // namespace JSC::DFG
+