Moving src/webrtc into src/.
In order to eliminate the WebRTC Subtree mirror in Chromium, WebRTC is moving the content of the src/webrtc directory up to the src/ directory. NOPRESUBMIT=true NOTREECHECKS=true NOTRY=true TBR=tommi@webrtc.org Bug: chromium:611808 Change-Id: Iac59c5b51b950f174119565bac87955a7994bc38 Reviewed-on: https://webrtc-review.googlesource.com/1560 Commit-Queue: Mirko Bonadei <mbonadei@webrtc.org> Reviewed-by: Henrik Kjellander <kjellander@webrtc.org> Cr-Commit-Position: refs/heads/master@{#19845}
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582
api/proxy.h
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582
api/proxy.h
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@ -0,0 +1,582 @@
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/*
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* Copyright 2013 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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// This file contains Macros for creating proxies for webrtc MediaStream and
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// PeerConnection classes.
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// TODO(deadbeef): Move this to pc/; this is part of the implementation.
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//
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// Example usage:
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//
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// class TestInterface : public rtc::RefCountInterface {
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// public:
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// std::string FooA() = 0;
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// std::string FooB(bool arg1) const = 0;
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// std::string FooC(bool arg1) = 0;
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// };
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//
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// Note that return types can not be a const reference.
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//
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// class Test : public TestInterface {
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// ... implementation of the interface.
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// };
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//
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// BEGIN_PROXY_MAP(Test)
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// PROXY_SIGNALING_THREAD_DESTRUCTOR()
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// PROXY_METHOD0(std::string, FooA)
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// PROXY_CONSTMETHOD1(std::string, FooB, arg1)
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// PROXY_WORKER_METHOD1(std::string, FooC, arg1)
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// END_PROXY_MAP()
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//
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// Where the destructor and first two methods are invoked on the signaling
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// thread, and the third is invoked on the worker thread.
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//
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// The proxy can be created using
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//
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// TestProxy::Create(Thread* signaling_thread, Thread* worker_thread,
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// TestInterface*).
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//
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// The variant defined with BEGIN_SIGNALING_PROXY_MAP is unaware of
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// the worker thread, and invokes all methods on the signaling thread.
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//
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// The variant defined with BEGIN_OWNED_PROXY_MAP does not use
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// refcounting, and instead just takes ownership of the object being proxied.
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#ifndef WEBRTC_API_PROXY_H_
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#define WEBRTC_API_PROXY_H_
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#include <memory>
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#include <utility>
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#include "webrtc/rtc_base/event.h"
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#include "webrtc/rtc_base/thread.h"
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namespace webrtc {
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template <typename R>
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class ReturnType {
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public:
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template<typename C, typename M>
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void Invoke(C* c, M m) { r_ = (c->*m)(); }
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template <typename C, typename M, typename T1>
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void Invoke(C* c, M m, T1 a1) {
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r_ = (c->*m)(std::move(a1));
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}
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template <typename C, typename M, typename T1, typename T2>
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void Invoke(C* c, M m, T1 a1, T2 a2) {
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r_ = (c->*m)(std::move(a1), std::move(a2));
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}
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template <typename C, typename M, typename T1, typename T2, typename T3>
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void Invoke(C* c, M m, T1 a1, T2 a2, T3 a3) {
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r_ = (c->*m)(std::move(a1), std::move(a2), std::move(a3));
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}
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template<typename C, typename M, typename T1, typename T2, typename T3,
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typename T4>
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void Invoke(C* c, M m, T1 a1, T2 a2, T3 a3, T4 a4) {
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r_ = (c->*m)(std::move(a1), std::move(a2), std::move(a3), std::move(a4));
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}
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template<typename C, typename M, typename T1, typename T2, typename T3,
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typename T4, typename T5>
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void Invoke(C* c, M m, T1 a1, T2 a2, T3 a3, T4 a4, T5 a5) {
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r_ = (c->*m)(std::move(a1), std::move(a2), std::move(a3), std::move(a4),
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std::move(a5));
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}
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R moved_result() { return std::move(r_); }
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private:
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R r_;
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};
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template <>
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class ReturnType<void> {
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public:
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template<typename C, typename M>
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void Invoke(C* c, M m) { (c->*m)(); }
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template <typename C, typename M, typename T1>
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void Invoke(C* c, M m, T1 a1) {
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(c->*m)(std::move(a1));
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}
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template <typename C, typename M, typename T1, typename T2>
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void Invoke(C* c, M m, T1 a1, T2 a2) {
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(c->*m)(std::move(a1), std::move(a2));
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}
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template <typename C, typename M, typename T1, typename T2, typename T3>
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void Invoke(C* c, M m, T1 a1, T2 a2, T3 a3) {
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(c->*m)(std::move(a1), std::move(a2), std::move(a3));
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}
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void moved_result() {}
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};
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namespace internal {
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class SynchronousMethodCall
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: public rtc::MessageData,
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public rtc::MessageHandler {
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public:
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explicit SynchronousMethodCall(rtc::MessageHandler* proxy)
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: e_(), proxy_(proxy) {}
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~SynchronousMethodCall() {}
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void Invoke(const rtc::Location& posted_from, rtc::Thread* t) {
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if (t->IsCurrent()) {
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proxy_->OnMessage(nullptr);
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} else {
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e_.reset(new rtc::Event(false, false));
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t->Post(posted_from, this, 0);
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e_->Wait(rtc::Event::kForever);
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}
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}
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private:
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void OnMessage(rtc::Message*) {
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proxy_->OnMessage(nullptr);
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e_->Set();
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}
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std::unique_ptr<rtc::Event> e_;
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rtc::MessageHandler* proxy_;
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};
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} // namespace internal
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template <typename C, typename R>
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class MethodCall0 : public rtc::Message,
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public rtc::MessageHandler {
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public:
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typedef R (C::*Method)();
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MethodCall0(C* c, Method m) : c_(c), m_(m) {}
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R Marshal(const rtc::Location& posted_from, rtc::Thread* t) {
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internal::SynchronousMethodCall(this).Invoke(posted_from, t);
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return r_.moved_result();
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}
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private:
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void OnMessage(rtc::Message*) { r_.Invoke(c_, m_); }
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C* c_;
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Method m_;
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ReturnType<R> r_;
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};
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template <typename C, typename R>
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class ConstMethodCall0 : public rtc::Message,
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public rtc::MessageHandler {
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public:
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typedef R (C::*Method)() const;
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ConstMethodCall0(C* c, Method m) : c_(c), m_(m) {}
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R Marshal(const rtc::Location& posted_from, rtc::Thread* t) {
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internal::SynchronousMethodCall(this).Invoke(posted_from, t);
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return r_.moved_result();
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}
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private:
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void OnMessage(rtc::Message*) { r_.Invoke(c_, m_); }
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C* c_;
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Method m_;
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ReturnType<R> r_;
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};
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template <typename C, typename R, typename T1>
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class MethodCall1 : public rtc::Message,
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public rtc::MessageHandler {
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public:
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typedef R (C::*Method)(T1 a1);
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MethodCall1(C* c, Method m, T1 a1) : c_(c), m_(m), a1_(std::move(a1)) {}
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R Marshal(const rtc::Location& posted_from, rtc::Thread* t) {
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internal::SynchronousMethodCall(this).Invoke(posted_from, t);
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return r_.moved_result();
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}
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private:
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void OnMessage(rtc::Message*) { r_.Invoke(c_, m_, std::move(a1_)); }
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C* c_;
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Method m_;
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ReturnType<R> r_;
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T1 a1_;
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};
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template <typename C, typename R, typename T1>
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class ConstMethodCall1 : public rtc::Message,
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public rtc::MessageHandler {
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public:
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typedef R (C::*Method)(T1 a1) const;
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ConstMethodCall1(C* c, Method m, T1 a1) : c_(c), m_(m), a1_(std::move(a1)) {}
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R Marshal(const rtc::Location& posted_from, rtc::Thread* t) {
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internal::SynchronousMethodCall(this).Invoke(posted_from, t);
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return r_.moved_result();
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}
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private:
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void OnMessage(rtc::Message*) { r_.Invoke(c_, m_, std::move(a1_)); }
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C* c_;
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Method m_;
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ReturnType<R> r_;
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T1 a1_;
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};
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template <typename C, typename R, typename T1, typename T2>
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class MethodCall2 : public rtc::Message,
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public rtc::MessageHandler {
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public:
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typedef R (C::*Method)(T1 a1, T2 a2);
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MethodCall2(C* c, Method m, T1 a1, T2 a2)
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: c_(c), m_(m), a1_(std::move(a1)), a2_(std::move(a2)) {}
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R Marshal(const rtc::Location& posted_from, rtc::Thread* t) {
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internal::SynchronousMethodCall(this).Invoke(posted_from, t);
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return r_.moved_result();
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}
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private:
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void OnMessage(rtc::Message*) {
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r_.Invoke(c_, m_, std::move(a1_), std::move(a2_));
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}
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C* c_;
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Method m_;
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ReturnType<R> r_;
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T1 a1_;
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T2 a2_;
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};
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template <typename C, typename R, typename T1, typename T2, typename T3>
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class MethodCall3 : public rtc::Message,
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public rtc::MessageHandler {
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public:
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typedef R (C::*Method)(T1 a1, T2 a2, T3 a3);
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MethodCall3(C* c, Method m, T1 a1, T2 a2, T3 a3)
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: c_(c),
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m_(m),
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a1_(std::move(a1)),
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a2_(std::move(a2)),
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a3_(std::move(a3)) {}
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R Marshal(const rtc::Location& posted_from, rtc::Thread* t) {
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internal::SynchronousMethodCall(this).Invoke(posted_from, t);
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return r_.moved_result();
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}
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private:
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void OnMessage(rtc::Message*) {
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r_.Invoke(c_, m_, std::move(a1_), std::move(a2_), std::move(a3_));
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}
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C* c_;
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Method m_;
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ReturnType<R> r_;
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T1 a1_;
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T2 a2_;
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T3 a3_;
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};
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template <typename C, typename R, typename T1, typename T2, typename T3,
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typename T4>
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class MethodCall4 : public rtc::Message,
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public rtc::MessageHandler {
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public:
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typedef R (C::*Method)(T1 a1, T2 a2, T3 a3, T4 a4);
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MethodCall4(C* c, Method m, T1 a1, T2 a2, T3 a3, T4 a4)
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: c_(c),
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m_(m),
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a1_(std::move(a1)),
|
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a2_(std::move(a2)),
|
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a3_(std::move(a3)),
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a4_(std::move(a4)) {}
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R Marshal(const rtc::Location& posted_from, rtc::Thread* t) {
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internal::SynchronousMethodCall(this).Invoke(posted_from, t);
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return r_.moved_result();
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}
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private:
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void OnMessage(rtc::Message*) {
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r_.Invoke(c_, m_, std::move(a1_), std::move(a2_), std::move(a3_),
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std::move(a4_));
|
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}
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|
||||
C* c_;
|
||||
Method m_;
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||||
ReturnType<R> r_;
|
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T1 a1_;
|
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T2 a2_;
|
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T3 a3_;
|
||||
T4 a4_;
|
||||
};
|
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|
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template <typename C, typename R, typename T1, typename T2, typename T3,
|
||||
typename T4, typename T5>
|
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class MethodCall5 : public rtc::Message,
|
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public rtc::MessageHandler {
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public:
|
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typedef R (C::*Method)(T1 a1, T2 a2, T3 a3, T4 a4, T5 a5);
|
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MethodCall5(C* c, Method m, T1 a1, T2 a2, T3 a3, T4 a4, T5 a5)
|
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: c_(c),
|
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m_(m),
|
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a1_(std::move(a1)),
|
||||
a2_(std::move(a2)),
|
||||
a3_(std::move(a3)),
|
||||
a4_(std::move(a4)),
|
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a5_(std::move(a5)) {}
|
||||
|
||||
R Marshal(const rtc::Location& posted_from, rtc::Thread* t) {
|
||||
internal::SynchronousMethodCall(this).Invoke(posted_from, t);
|
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return r_.moved_result();
|
||||
}
|
||||
|
||||
private:
|
||||
void OnMessage(rtc::Message*) {
|
||||
r_.Invoke(c_, m_, std::move(a1_), std::move(a2_), std::move(a3_),
|
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std::move(a4_), std::move(a5_));
|
||||
}
|
||||
|
||||
C* c_;
|
||||
Method m_;
|
||||
ReturnType<R> r_;
|
||||
T1 a1_;
|
||||
T2 a2_;
|
||||
T3 a3_;
|
||||
T4 a4_;
|
||||
T5 a5_;
|
||||
};
|
||||
|
||||
|
||||
// Helper macros to reduce code duplication.
|
||||
#define PROXY_MAP_BOILERPLATE(c) \
|
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template <class INTERNAL_CLASS> \
|
||||
class c##ProxyWithInternal; \
|
||||
typedef c##ProxyWithInternal<c##Interface> c##Proxy; \
|
||||
template <class INTERNAL_CLASS> \
|
||||
class c##ProxyWithInternal : public c##Interface { \
|
||||
protected: \
|
||||
typedef c##Interface C; \
|
||||
\
|
||||
public: \
|
||||
const INTERNAL_CLASS* internal() const { return c_; } \
|
||||
INTERNAL_CLASS* internal() { return c_; }
|
||||
|
||||
#define END_PROXY_MAP() \
|
||||
};
|
||||
|
||||
#define SIGNALING_PROXY_MAP_BOILERPLATE(c) \
|
||||
protected: \
|
||||
c##ProxyWithInternal(rtc::Thread* signaling_thread, INTERNAL_CLASS* c) \
|
||||
: signaling_thread_(signaling_thread), c_(c) {} \
|
||||
\
|
||||
private: \
|
||||
mutable rtc::Thread* signaling_thread_;
|
||||
|
||||
#define WORKER_PROXY_MAP_BOILERPLATE(c) \
|
||||
protected: \
|
||||
c##ProxyWithInternal(rtc::Thread* signaling_thread, \
|
||||
rtc::Thread* worker_thread, INTERNAL_CLASS* c) \
|
||||
: signaling_thread_(signaling_thread), \
|
||||
worker_thread_(worker_thread), \
|
||||
c_(c) {} \
|
||||
\
|
||||
private: \
|
||||
mutable rtc::Thread* signaling_thread_; \
|
||||
mutable rtc::Thread* worker_thread_;
|
||||
|
||||
// Note that the destructor is protected so that the proxy can only be
|
||||
// destroyed via RefCountInterface.
|
||||
#define REFCOUNTED_PROXY_MAP_BOILERPLATE(c) \
|
||||
protected: \
|
||||
~c##ProxyWithInternal() { \
|
||||
MethodCall0<c##ProxyWithInternal, void> call( \
|
||||
this, &c##ProxyWithInternal::DestroyInternal); \
|
||||
call.Marshal(RTC_FROM_HERE, destructor_thread()); \
|
||||
} \
|
||||
\
|
||||
private: \
|
||||
void DestroyInternal() { c_ = nullptr; } \
|
||||
rtc::scoped_refptr<INTERNAL_CLASS> c_;
|
||||
|
||||
// Note: This doesn't use a unique_ptr, because it intends to handle a corner
|
||||
// case where an object's deletion triggers a callback that calls back into
|
||||
// this proxy object. If relying on a unique_ptr to delete the object, its
|
||||
// inner pointer would be set to null before this reentrant callback would have
|
||||
// a chance to run, resulting in a segfault.
|
||||
#define OWNED_PROXY_MAP_BOILERPLATE(c) \
|
||||
public: \
|
||||
~c##ProxyWithInternal() { \
|
||||
MethodCall0<c##ProxyWithInternal, void> call( \
|
||||
this, &c##ProxyWithInternal::DestroyInternal); \
|
||||
call.Marshal(RTC_FROM_HERE, destructor_thread()); \
|
||||
} \
|
||||
\
|
||||
private: \
|
||||
void DestroyInternal() { delete c_; } \
|
||||
INTERNAL_CLASS* c_;
|
||||
|
||||
#define BEGIN_SIGNALING_PROXY_MAP(c) \
|
||||
PROXY_MAP_BOILERPLATE(c) \
|
||||
SIGNALING_PROXY_MAP_BOILERPLATE(c) \
|
||||
REFCOUNTED_PROXY_MAP_BOILERPLATE(c) \
|
||||
public: \
|
||||
static rtc::scoped_refptr<c##ProxyWithInternal> Create( \
|
||||
rtc::Thread* signaling_thread, INTERNAL_CLASS* c) { \
|
||||
return new rtc::RefCountedObject<c##ProxyWithInternal>(signaling_thread, \
|
||||
c); \
|
||||
}
|
||||
|
||||
#define BEGIN_PROXY_MAP(c) \
|
||||
PROXY_MAP_BOILERPLATE(c) \
|
||||
WORKER_PROXY_MAP_BOILERPLATE(c) \
|
||||
REFCOUNTED_PROXY_MAP_BOILERPLATE(c) \
|
||||
public: \
|
||||
static rtc::scoped_refptr<c##ProxyWithInternal> Create( \
|
||||
rtc::Thread* signaling_thread, rtc::Thread* worker_thread, \
|
||||
INTERNAL_CLASS* c) { \
|
||||
return new rtc::RefCountedObject<c##ProxyWithInternal>(signaling_thread, \
|
||||
worker_thread, c); \
|
||||
}
|
||||
|
||||
#define BEGIN_OWNED_PROXY_MAP(c) \
|
||||
PROXY_MAP_BOILERPLATE(c) \
|
||||
WORKER_PROXY_MAP_BOILERPLATE(c) \
|
||||
OWNED_PROXY_MAP_BOILERPLATE(c) \
|
||||
public: \
|
||||
static std::unique_ptr<c##Interface> Create( \
|
||||
rtc::Thread* signaling_thread, rtc::Thread* worker_thread, \
|
||||
std::unique_ptr<INTERNAL_CLASS> c) { \
|
||||
return std::unique_ptr<c##Interface>(new c##ProxyWithInternal( \
|
||||
signaling_thread, worker_thread, c.release())); \
|
||||
}
|
||||
|
||||
#define PROXY_SIGNALING_THREAD_DESTRUCTOR() \
|
||||
private: \
|
||||
rtc::Thread* destructor_thread() const { return signaling_thread_; } \
|
||||
\
|
||||
public: // NOLINTNEXTLINE
|
||||
|
||||
#define PROXY_WORKER_THREAD_DESTRUCTOR() \
|
||||
private: \
|
||||
rtc::Thread* destructor_thread() const { return worker_thread_; } \
|
||||
\
|
||||
public: // NOLINTNEXTLINE
|
||||
|
||||
#define PROXY_METHOD0(r, method) \
|
||||
r method() override { \
|
||||
MethodCall0<C, r> call(c_, &C::method); \
|
||||
return call.Marshal(RTC_FROM_HERE, signaling_thread_); \
|
||||
}
|
||||
|
||||
#define PROXY_CONSTMETHOD0(r, method) \
|
||||
r method() const override { \
|
||||
ConstMethodCall0<C, r> call(c_, &C::method); \
|
||||
return call.Marshal(RTC_FROM_HERE, signaling_thread_); \
|
||||
}
|
||||
|
||||
#define PROXY_METHOD1(r, method, t1) \
|
||||
r method(t1 a1) override { \
|
||||
MethodCall1<C, r, t1> call(c_, &C::method, std::move(a1)); \
|
||||
return call.Marshal(RTC_FROM_HERE, signaling_thread_); \
|
||||
}
|
||||
|
||||
#define PROXY_CONSTMETHOD1(r, method, t1) \
|
||||
r method(t1 a1) const override { \
|
||||
ConstMethodCall1<C, r, t1> call(c_, &C::method, std::move(a1)); \
|
||||
return call.Marshal(RTC_FROM_HERE, signaling_thread_); \
|
||||
}
|
||||
|
||||
#define PROXY_METHOD2(r, method, t1, t2) \
|
||||
r method(t1 a1, t2 a2) override { \
|
||||
MethodCall2<C, r, t1, t2> call(c_, &C::method, std::move(a1), \
|
||||
std::move(a2)); \
|
||||
return call.Marshal(RTC_FROM_HERE, signaling_thread_); \
|
||||
}
|
||||
|
||||
#define PROXY_METHOD3(r, method, t1, t2, t3) \
|
||||
r method(t1 a1, t2 a2, t3 a3) override { \
|
||||
MethodCall3<C, r, t1, t2, t3> call(c_, &C::method, std::move(a1), \
|
||||
std::move(a2), std::move(a3)); \
|
||||
return call.Marshal(RTC_FROM_HERE, signaling_thread_); \
|
||||
}
|
||||
|
||||
#define PROXY_METHOD4(r, method, t1, t2, t3, t4) \
|
||||
r method(t1 a1, t2 a2, t3 a3, t4 a4) override { \
|
||||
MethodCall4<C, r, t1, t2, t3, t4> call(c_, &C::method, std::move(a1), \
|
||||
std::move(a2), std::move(a3), \
|
||||
std::move(a4)); \
|
||||
return call.Marshal(RTC_FROM_HERE, signaling_thread_); \
|
||||
}
|
||||
|
||||
#define PROXY_METHOD5(r, method, t1, t2, t3, t4, t5) \
|
||||
r method(t1 a1, t2 a2, t3 a3, t4 a4, t5 a5) override { \
|
||||
MethodCall5<C, r, t1, t2, t3, t4, t5> call(c_, &C::method, std::move(a1), \
|
||||
std::move(a2), std::move(a3), \
|
||||
std::move(a4), std::move(a5)); \
|
||||
return call.Marshal(RTC_FROM_HERE, signaling_thread_); \
|
||||
}
|
||||
|
||||
// Define methods which should be invoked on the worker thread.
|
||||
#define PROXY_WORKER_METHOD0(r, method) \
|
||||
r method() override { \
|
||||
MethodCall0<C, r> call(c_, &C::method); \
|
||||
return call.Marshal(RTC_FROM_HERE, worker_thread_); \
|
||||
}
|
||||
|
||||
#define PROXY_WORKER_CONSTMETHOD0(r, method) \
|
||||
r method() const override { \
|
||||
ConstMethodCall0<C, r> call(c_, &C::method); \
|
||||
return call.Marshal(RTC_FROM_HERE, worker_thread_); \
|
||||
}
|
||||
|
||||
#define PROXY_WORKER_METHOD1(r, method, t1) \
|
||||
r method(t1 a1) override { \
|
||||
MethodCall1<C, r, t1> call(c_, &C::method, std::move(a1)); \
|
||||
return call.Marshal(RTC_FROM_HERE, worker_thread_); \
|
||||
}
|
||||
|
||||
#define PROXY_WORKER_CONSTMETHOD1(r, method, t1) \
|
||||
r method(t1 a1) const override { \
|
||||
ConstMethodCall1<C, r, t1> call(c_, &C::method, std::move(a1)); \
|
||||
return call.Marshal(RTC_FROM_HERE, worker_thread_); \
|
||||
}
|
||||
|
||||
#define PROXY_WORKER_METHOD2(r, method, t1, t2) \
|
||||
r method(t1 a1, t2 a2) override { \
|
||||
MethodCall2<C, r, t1, t2> call(c_, &C::method, std::move(a1), \
|
||||
std::move(a2)); \
|
||||
return call.Marshal(RTC_FROM_HERE, worker_thread_); \
|
||||
}
|
||||
|
||||
#define PROXY_WORKER_CONSTMETHOD2(r, method, t1, t2) \
|
||||
r method(t1 a1, t2 a2) const override { \
|
||||
ConstMethodCall2<C, r, t1, t2> call(c_, &C::method, std::move(a1), \
|
||||
std::move(a2)); \
|
||||
return call.Marshal(RTC_FROM_HERE, worker_thread_); \
|
||||
}
|
||||
|
||||
#define PROXY_WORKER_METHOD3(r, method, t1, t2, t3) \
|
||||
r method(t1 a1, t2 a2, t3 a3) override { \
|
||||
MethodCall3<C, r, t1, t2, t3> call(c_, &C::method, std::move(a1), \
|
||||
std::move(a2), std::move(a3)); \
|
||||
return call.Marshal(RTC_FROM_HERE, worker_thread_); \
|
||||
}
|
||||
|
||||
#define PROXY_WORKER_CONSTMETHOD3(r, method, t1, t2) \
|
||||
r method(t1 a1, t2 a2, t3 a3) const override { \
|
||||
ConstMethodCall3<C, r, t1, t2, t3> call(c_, &C::method, std::move(a1), \
|
||||
std::move(a2), std::move(a3)); \
|
||||
return call.Marshal(RTC_FROM_HERE, worker_thread_); \
|
||||
}
|
||||
|
||||
} // namespace webrtc
|
||||
|
||||
#endif // WEBRTC_API_PROXY_H_
|
||||
Reference in New Issue
Block a user