diff -r 000000000000 -r 4f2f89ce4247 WebCore/html/FileThreadTask.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/WebCore/html/FileThreadTask.h	Fri Sep 17 09:02:29 2010 +0300
@@ -0,0 +1,242 @@
+/*
+ * Copyright (C) 2010 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 FileThreadTask_h
+#define FileThreadTask_h
+
+#include "CrossThreadCopier.h"
+#include "FileThread.h"
+#include <memory>
+#include <wtf/PassOwnPtr.h>
+#include <wtf/PassRefPtr.h>
+#include <wtf/TypeTraits.h>
+
+namespace WebCore {
+
+// Traits for the Task.
+template<typename T> struct FileThreadTaskTraits {
+    typedef const T& ParamType;
+};
+
+template<typename T> struct FileThreadTaskTraits<T*> {
+    typedef T* ParamType;
+};
+
+template<typename T> struct FileThreadTaskTraits<PassRefPtr<T> > {
+    typedef PassRefPtr<T> ParamType;
+};
+
+template<typename T> struct FileThreadTaskTraits<PassOwnPtr<T> > {
+    typedef PassOwnPtr<T> ParamType;
+};
+
+class FileThreadTask0 : public FileThread::Task {
+public:
+    typedef void (FileStream::*Method)();
+    typedef FileThreadTask0 FileThreadTask;
+
+    static PassOwnPtr<FileThreadTask> create(FileStream* stream, Method method)
+    {
+        return new FileThreadTask(stream, method);
+    }
+
+private:
+    FileThreadTask0(FileStream* stream, Method method)
+        : FileThread::Task(stream)
+        , m_method(method)
+    {
+    }
+
+    virtual void performTask()
+    {
+        (*stream().*m_method)();
+    }
+
+private:
+    Method m_method;
+};
+
+template<typename P1, typename MP1>
+class FileThreadTask1 : public FileThread::Task {
+public:
+    typedef void (FileStream::*Method)(MP1);
+    typedef FileThreadTask1<P1, MP1> FileThreadTask;
+    typedef typename FileThreadTaskTraits<P1>::ParamType Param1;
+
+    static PassOwnPtr<FileThreadTask> create(FileStream* stream, Method method, Param1 parameter1)
+    {
+        return new FileThreadTask(stream, method, parameter1);
+    }
+
+private:
+    FileThreadTask1(FileStream* stream, Method method, Param1 parameter1)
+        : FileThread::Task(stream)
+        , m_method(method)
+        , m_parameter1(parameter1)
+    {
+    }
+
+    virtual void performTask()
+    {
+        (*stream().*m_method)(m_parameter1);
+    }
+
+private:
+    Method m_method;
+    P1 m_parameter1;
+};
+
+template<typename P1, typename MP1, typename P2, typename MP2>
+class FileThreadTask2 : public FileThread::Task {
+public:
+    typedef void (FileStream::*Method)(MP1, MP2);
+    typedef FileThreadTask2<P1, MP1, P2, MP2> FileThreadTask;
+    typedef typename FileThreadTaskTraits<P1>::ParamType Param1;
+    typedef typename FileThreadTaskTraits<P2>::ParamType Param2;
+
+    static PassOwnPtr<FileThreadTask> create(FileStream* stream, Method method, Param1 parameter1, Param2 parameter2)
+    {
+        return new FileThreadTask(stream, method, parameter1, parameter2);
+    }
+
+private:
+    FileThreadTask2(FileStream* stream, Method method, Param1 parameter1, Param2 parameter2)
+        : FileThread::Task(stream)
+        , m_method(method)
+        , m_parameter1(parameter1)
+        , m_parameter2(parameter2)
+    {
+    }
+
+    virtual void performTask()
+    {
+        (*stream().*m_method)(m_parameter1, m_parameter2);
+    }
+
+private:
+    Method m_method;
+    P1 m_parameter1;
+    P2 m_parameter2;
+};
+
+template<typename P1, typename MP1, typename P2, typename MP2, typename P3, typename MP3>
+class FileThreadTask3 : public FileThread::Task {
+public:
+    typedef void (FileStream::*Method)(MP1, MP2, MP3);
+    typedef FileThreadTask3<P1, MP1, P2, MP2, P3, MP3> FileThreadTask;
+    typedef typename FileThreadTaskTraits<P1>::ParamType Param1;
+    typedef typename FileThreadTaskTraits<P2>::ParamType Param2;
+    typedef typename FileThreadTaskTraits<P3>::ParamType Param3;
+
+    static PassOwnPtr<FileThreadTask> create(FileStream* stream, Method method, Param1 parameter1, Param2 parameter2, Param3 parameter3)
+    {
+        return new FileThreadTask(stream, method, parameter1, parameter2, parameter3);
+    }
+
+private:
+    FileThreadTask3(FileStream* stream, Method method, Param1 parameter1, Param2 parameter2, Param3 parameter3)
+        : FileThread::Task(stream)
+        , m_method(method)
+        , m_parameter1(parameter1)
+        , m_parameter2(parameter2)
+        , m_parameter3(parameter3)
+    {
+    }
+
+    virtual void performTask()
+    {
+        (*stream().*m_method)(m_parameter1, m_parameter2, m_parameter3);
+    }
+
+private:
+    Method m_method;
+    P1 m_parameter1;
+    P2 m_parameter2;
+    P3 m_parameter3;
+};
+
+PassOwnPtr<FileThread::Task> createFileThreadTask(
+    FileStream* const callee,
+    void (FileStream::*method)());
+
+PassOwnPtr<FileThread::Task> createFileThreadTask(
+    FileStream* const callee,
+    void (FileStream::*method)())
+{
+    return FileThreadTask0::create(
+        callee,
+        method);
+}
+
+template<typename P1, typename MP1>
+PassOwnPtr<FileThread::Task> createFileThreadTask(
+    FileStream* const callee,
+    void (FileStream::*method)(MP1),
+    const P1& parameter1)
+{
+    return FileThreadTask1<typename CrossThreadCopier<P1>::Type, MP1>::create(
+        callee,
+        method,
+        CrossThreadCopier<P1>::copy(parameter1));
+}
+
+template<typename P1, typename MP1, typename P2, typename MP2>
+PassOwnPtr<FileThread::Task> createFileThreadTask(
+    FileStream* const callee,
+    void (FileStream::*method)(MP1, MP2),
+    const P1& parameter1,
+    const P2& parameter2)
+{
+    return FileThreadTask2<typename CrossThreadCopier<P1>::Type, MP1, typename CrossThreadCopier<P2>::Type, MP2>::create(
+        callee,
+        method,
+        CrossThreadCopier<P1>::copy(parameter1),
+        CrossThreadCopier<P2>::copy(parameter2));
+}
+
+template<typename P1, typename MP1, typename P2, typename MP2, typename P3, typename MP3>
+PassOwnPtr<FileThread::Task> createFileThreadTask(
+    FileStream* const callee,
+    void (FileStream::*method)(MP1, MP2, MP3),
+    const P1& parameter1,
+    const P2& parameter2,
+    const P3& parameter3)
+{
+    return FileThreadTask3<typename CrossThreadCopier<P1>::Type, MP1, typename CrossThreadCopier<P2>::Type, MP2, typename CrossThreadCopier<P3>::Type, MP3>::create(
+        callee,
+        method,
+        CrossThreadCopier<P1>::copy(parameter1),
+        CrossThreadCopier<P2>::copy(parameter2),
+        CrossThreadCopier<P3>::copy(parameter3));
+}
+
+} // namespace WebCore
+
+#endif // FileThreadTask_h