Repo created

TMessagesProj/jni/voip/webrtc/base/sequenced_task_runner_helpers.h

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+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef BASE_SEQUENCED_TASK_RUNNER_HELPERS_H_
+#define BASE_SEQUENCED_TASK_RUNNER_HELPERS_H_
+
+namespace base {
+
+class SequencedTaskRunner;
+
+// Template helpers which use function indirection to erase T from the
+// function signature while still remembering it so we can call the
+// correct destructor/release function.
+//
+// We use this trick so we don't need to include bind.h in a header
+// file like sequenced_task_runner.h. We also wrap the helpers in a
+// templated class to make it easier for users of DeleteSoon to
+// declare the helper as a friend.
+template <class T>
+class DeleteHelper {
+ private:
+  static void DoDelete(const void* object) {
+    delete static_cast<const T*>(object);
+  }
+
+  friend class SequencedTaskRunner;
+};
+
+template <class T>
+class ReleaseHelper {
+ private:
+  static void DoRelease(const void* object) {
+    static_cast<const T*>(object)->Release();
+  }
+
+  friend class SequencedTaskRunner;
+};
+
+}  // namespace base
+
+#endif  // BASE_SEQUENCED_TASK_RUNNER_HELPERS_H_