Imported QtWebKit TP3 (git b57bc6801f1876c3220d5a4bfea33d620d477443)

Change-Id: I3b1d8a2808782c9f34d50240000e20cb38d3680f
Reviewed-by: Konstantin Tokarev <annulen@yandex.ru>

1 files changed, 91 insertions, 0 deletions

diff --git a/Source/JavaScriptCore/dfg/DFGToFTLDeferredCompilationCallback.cpp b/Source/JavaScriptCore/dfg/DFGToFTLDeferredCompilationCallback.cpp
new file mode 100644
index 000000000..a18664173
--- /dev/null
+++ b/Source/JavaScriptCore/dfg/DFGToFTLDeferredCompilationCallback.cpp
@@ -0,0 +1,91 @@
+/*
+ * 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. ``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 "DFGToFTLDeferredCompilationCallback.h"
+
+#if ENABLE(FTL_JIT)
+
+#include "CodeBlock.h"
+#include "DFGJITCode.h"
+#include "Executable.h"
+#include "JSCInlines.h"
+
+namespace JSC { namespace DFG {
+
+ToFTLDeferredCompilationCallback::ToFTLDeferredCompilationCallback()
+{
+}
+
+ToFTLDeferredCompilationCallback::~ToFTLDeferredCompilationCallback() { }
+
+Ref<ToFTLDeferredCompilationCallback> ToFTLDeferredCompilationCallback::create()
+{
+    return adoptRef(*new ToFTLDeferredCompilationCallback());
+}
+
+void ToFTLDeferredCompilationCallback::compilationDidBecomeReadyAsynchronously(
+    CodeBlock* codeBlock, CodeBlock* profiledDFGCodeBlock)
+{
+    if (Options::verboseOSR()) {
+        dataLog(
+            "Optimizing compilation of ", *codeBlock, " (for ", *profiledDFGCodeBlock,
+            ") did become ready.\n");
+    }
+    
+    profiledDFGCodeBlock->jitCode()->dfg()->forceOptimizationSlowPathConcurrently(
+        profiledDFGCodeBlock);
+}
+
+void ToFTLDeferredCompilationCallback::compilationDidComplete(
+    CodeBlock* codeBlock, CodeBlock* profiledDFGCodeBlock, CompilationResult result)
+{
+    if (Options::verboseOSR()) {
+        dataLog(
+            "Optimizing compilation of ", *codeBlock, " (for ", *profiledDFGCodeBlock,
+            ") result: ", result, "\n");
+    }
+    
+    if (profiledDFGCodeBlock->replacement() != profiledDFGCodeBlock) {
+        if (Options::verboseOSR()) {
+            dataLog(
+                "Dropping FTL code block ", *codeBlock, " on the floor because the "
+                "DFG code block ", *profiledDFGCodeBlock, " was jettisoned.\n");
+        }
+        return;
+    }
+    
+    if (result == CompilationSuccessful)
+        codeBlock->ownerScriptExecutable()->installCode(codeBlock);
+    
+    profiledDFGCodeBlock->jitCode()->dfg()->setOptimizationThresholdBasedOnCompilationResult(
+        profiledDFGCodeBlock, result);
+
+    DeferredCompilationCallback::compilationDidComplete(codeBlock, profiledDFGCodeBlock, result);
+}
+
+} } // JSC::DFG
+
+#endif // ENABLE(FTL_JIT)