Merge WebKit at r75315: Initial merge by git.

Change-Id: I570314b346ce101c935ed22a626b48c2af266b84

1 files changed, 96 insertions, 0 deletions

diff --git a/Source/WebCore/workers/WorkerRunLoop.h b/Source/WebCore/workers/WorkerRunLoop.h
new file mode 100644
index 0000000..9d4edfd
--- /dev/null
+++ b/Source/WebCore/workers/WorkerRunLoop.h
@@ -0,0 +1,96 @@
+/*
+ * Copyright (C) 2009 Google 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:
+ * 
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * 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.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT
+ * OWNER 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 WorkerRunLoop_h
+#define WorkerRunLoop_h
+
+#if ENABLE(WORKERS)
+
+#include "ScriptExecutionContext.h"
+#include <wtf/MessageQueue.h>
+#include <wtf/OwnPtr.h>
+#include <wtf/PassOwnPtr.h>
+
+namespace WebCore {
+
+    class ModePredicate;
+    class WorkerContext;
+    class WorkerSharedTimer;
+
+    class WorkerRunLoop {
+    public:
+        WorkerRunLoop();
+        ~WorkerRunLoop();
+        
+        // Blocking call. Waits for tasks and timers, invokes the callbacks.
+        void run(WorkerContext*);
+
+        // Waits for a single task and returns.
+        MessageQueueWaitResult runInMode(WorkerContext*, const String& mode);
+
+        void terminate();
+        bool terminated() { return m_messageQueue.killed(); }
+
+        void postTask(PassOwnPtr<ScriptExecutionContext::Task>);
+        void postTaskForMode(PassOwnPtr<ScriptExecutionContext::Task>, const String& mode);
+
+        unsigned long createUniqueId() { return ++m_uniqueId; }
+
+        static String defaultMode();
+
+        class Task : public Noncopyable {
+        public:
+            static PassOwnPtr<Task> create(PassOwnPtr<ScriptExecutionContext::Task> task, const String& mode);
+            ~Task() { }
+            const String& mode() const { return m_mode; }
+            void performTask(ScriptExecutionContext* context);
+
+        private:
+            Task(PassOwnPtr<ScriptExecutionContext::Task> task, const String& mode);
+        
+            OwnPtr<ScriptExecutionContext::Task> m_task;
+            String m_mode;
+        };
+
+    private:
+        friend class RunLoopSetup;
+        MessageQueueWaitResult runInMode(WorkerContext*, const ModePredicate&);
+
+        MessageQueue<Task> m_messageQueue;
+        OwnPtr<WorkerSharedTimer> m_sharedTimer;
+        int m_nestedCount;
+        unsigned long m_uniqueId;
+    };
+
+} // namespace WebCore
+
+#endif // ENABLE(WORKERS)
+
+#endif // WorkerRunLoop_h