123594114f
This is the next step towards making MessageHandler a pure virtual interface. All dependencies that require automatic cleanup should be depending on the MessageHandlerAutoCleanup class. Next step will be to remove the ctor from MessageHandler and make it a pure virtual interface. Bug: webrtc:11908 Change-Id: I9321b6d9e57c167868f8b896a5345fbfe19af0e9 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/183984 Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org> Commit-Queue: Tommi <tommi@webrtc.org> Cr-Commit-Position: refs/heads/master@{#32090}
61 lines
1.8 KiB
C++
61 lines
1.8 KiB
C++
/*
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* Copyright 2004 The WebRTC Project Authors. All rights reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef RTC_BASE_MESSAGE_HANDLER_H_
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#define RTC_BASE_MESSAGE_HANDLER_H_
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#include <utility>
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#include "api/function_view.h"
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#include "rtc_base/constructor_magic.h"
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#include "rtc_base/system/rtc_export.h"
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namespace rtc {
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struct Message;
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// MessageQueue/Thread Messages get dispatched to a MessageHandler via the
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// |OnMessage()| callback method.
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//
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// Note: Besides being an interface, the class can perform automatic cleanup
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// in the destructor.
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// TODO(bugs.webrtc.org/11908): The |auto_cleanup| parameter and associated
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// logic is a temporary step while changing the MessageHandler class to be
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// a pure virtual interface. The automatic cleanup step involves a number of
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// complex operations and as part of this interface, can easily go by unnoticed
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// and bundled into situations where it's not needed.
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class RTC_EXPORT MessageHandler {
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public:
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virtual ~MessageHandler();
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virtual void OnMessage(Message* msg) = 0;
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protected:
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// TODO(bugs.webrtc.org/11908): Remove this ctor.
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explicit MessageHandler(bool auto_cleanup);
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private:
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RTC_DISALLOW_COPY_AND_ASSIGN(MessageHandler);
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};
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class RTC_EXPORT MessageHandlerAutoCleanup : public MessageHandler {
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public:
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~MessageHandlerAutoCleanup() override;
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protected:
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MessageHandlerAutoCleanup();
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private:
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RTC_DISALLOW_COPY_AND_ASSIGN(MessageHandlerAutoCleanup);
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};
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} // namespace rtc
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#endif // RTC_BASE_MESSAGE_HANDLER_H_
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