diff -r 000000000000 -r 4f2f89ce4247 WebCore/platform/ThreadCheck.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/WebCore/platform/ThreadCheck.h	Fri Sep 17 09:02:29 2010 +0300
@@ -0,0 +1,50 @@
+/*
+ * Copyright (C) 2007 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 COMPUTER, 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 COMPUTER, 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 ThreadCheck_h
+#define ThreadCheck_h
+
+namespace WebCore {
+    enum ThreadViolationBehavior {
+        NoThreadCheck,
+        LogOnFirstThreadViolation,
+        LogOnThreadViolation,
+        RaiseExceptionOnThreadViolation
+    };
+    enum ThreadViolationRound {
+        ThreadViolationRoundOne = 0,
+        ThreadViolationRoundTwo,
+        MaximumThreadViolationRound
+    };
+    void setDefaultThreadViolationBehavior(ThreadViolationBehavior, ThreadViolationRound);
+    void reportThreadViolation(const char* function, ThreadViolationRound);
+}
+
+extern "C" void WebCoreReportThreadViolation(const char* function, WebCore::ThreadViolationRound);
+
+#define WebCoreThreadViolationCheckRoundOne() ::WebCore::reportThreadViolation(WTF_PRETTY_FUNCTION, WebCore::ThreadViolationRoundOne)
+#define WebCoreThreadViolationCheckRoundTwo() ::WebCore::reportThreadViolation(WTF_PRETTY_FUNCTION, WebCore::ThreadViolationRoundTwo)
+
+#endif