Imported QtWebKit TP3 (git b57bc6801f1876c3220d5a4bfea33d620d477443)

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

1 files changed, 93 insertions, 0 deletions

diff --git a/Source/JavaScriptCore/debugger/ScriptProfilingScope.h b/Source/JavaScriptCore/debugger/ScriptProfilingScope.h
new file mode 100644
index 000000000..ba6bdfc51
--- /dev/null
+++ b/Source/JavaScriptCore/debugger/ScriptProfilingScope.h
@@ -0,0 +1,93 @@
+/*
+ * Copyright (C) 2015 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 ScriptProfilingScope_h
+#define ScriptProfilingScope_h
+
+#include "Debugger.h"
+#include "JSGlobalObject.h"
+#include <wtf/Optional.h>
+
+namespace JSC {
+
+class ScriptProfilingScope {
+public:
+    ScriptProfilingScope(JSGlobalObject* globalObject, ProfilingReason reason)
+        : m_globalObject(globalObject)
+        , m_reason(reason)
+    {
+        if (shouldStartProfile())
+            m_startTime = m_globalObject->debugger()->willEvaluateScript();
+    }
+
+    ~ScriptProfilingScope()
+    {
+        if (shouldEndProfile())
+            m_globalObject->debugger()->didEvaluateScript(m_startTime.value(), m_reason);
+    }
+
+private:
+    bool shouldStartProfile() const
+    {
+        if (!m_globalObject)
+            return false;
+
+        if (!m_globalObject->hasDebugger())
+            return false;
+
+        if (!m_globalObject->debugger()->hasProfilingClient())
+            return false;
+
+        if (m_globalObject->debugger()->isAlreadyProfiling())
+            return false;
+
+        return true;
+    }
+
+    bool shouldEndProfile() const
+    {
+        // Did not start a profile.
+        if (!m_startTime)
+            return false;
+
+        // Debugger may have been removed.
+        if (!m_globalObject->hasDebugger())
+            return false;
+
+        // Profiling Client may have been removed.
+        if (!m_globalObject->debugger()->hasProfilingClient())
+            return false;
+
+        return true;
+    }
+
+    JSGlobalObject* m_globalObject { nullptr };
+    Optional<double> m_startTime;
+    ProfilingReason m_reason;
+};
+
+}
+
+#endif // ScriptProfilingScope_h