Revert "Replaces SynchronousMethodCall with rtc::Thread::Invoke."
This reverts commit b0e0728159f07269a875c5b53658603cf6733480.
Reason for revert:
Causes Chromium tests to timeout, preventing rolls into Chromium.
Original change's description:
> Replaces SynchronousMethodCall with rtc::Thread::Invoke.
>
> Given that we already have Thread:.Invoke that can be used with lambda,
> SynchronousMethodCall doesn't add any value.
>
> This simplification prepares for simulated time peer connection tests.
>
> Bug: webrtc:11255
> Change-Id: I478a11f15e30e009dae4a3fee2120f6d7a03355f
> Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/165683
> Commit-Queue: Sebastian Jansson <srte@webrtc.org>
> Reviewed-by: Steve Anton <steveanton@webrtc.org>
> Cr-Commit-Position: refs/heads/master@{#30217}
TBR=steveanton@webrtc.org,srte@webrtc.org
# Not skipping CQ checks because original CL landed > 1 day ago.
Bug: webrtc:11255
Change-Id: I9d3aa218013129db7a09a77500a0547ce9ae341a
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/166047
Reviewed-by: Guido Urdaneta <guidou@webrtc.org>
Commit-Queue: Guido Urdaneta <guidou@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#30265}
diff --git a/api/proxy.h b/api/proxy.h
index 474b9a6..385992e 100644
--- a/api/proxy.h
+++ b/api/proxy.h
@@ -70,6 +70,106 @@
namespace webrtc {
+template <typename R>
+class ReturnType {
+ public:
+ template <typename C, typename M, typename... Args>
+ void Invoke(C* c, M m, Args&&... args) {
+ r_ = (c->*m)(std::forward<Args>(args)...);
+ }
+
+ R moved_result() { return std::move(r_); }
+
+ private:
+ R r_;
+};
+
+template <>
+class ReturnType<void> {
+ public:
+ template <typename C, typename M, typename... Args>
+ void Invoke(C* c, M m, Args&&... args) {
+ (c->*m)(std::forward<Args>(args)...);
+ }
+
+ void moved_result() {}
+};
+
+namespace internal {
+
+class RTC_EXPORT SynchronousMethodCall : public rtc::MessageData,
+ public rtc::MessageHandler {
+ public:
+ explicit SynchronousMethodCall(rtc::MessageHandler* proxy);
+ ~SynchronousMethodCall() override;
+
+ void Invoke(const rtc::Location& posted_from, rtc::Thread* t);
+
+ private:
+ void OnMessage(rtc::Message*) override;
+
+ rtc::Event e_;
+ rtc::MessageHandler* proxy_;
+};
+
+} // namespace internal
+
+template <typename C, typename R, typename... Args>
+class MethodCall : public rtc::Message, public rtc::MessageHandler {
+ public:
+ typedef R (C::*Method)(Args...);
+ MethodCall(C* c, Method m, Args&&... args)
+ : c_(c),
+ m_(m),
+ args_(std::forward_as_tuple(std::forward<Args>(args)...)) {}
+
+ R Marshal(const rtc::Location& posted_from, rtc::Thread* t) {
+ internal::SynchronousMethodCall(this).Invoke(posted_from, t);
+ return r_.moved_result();
+ }
+
+ private:
+ void OnMessage(rtc::Message*) { Invoke(std::index_sequence_for<Args...>()); }
+
+ template <size_t... Is>
+ void Invoke(std::index_sequence<Is...>) {
+ r_.Invoke(c_, m_, std::move(std::get<Is>(args_))...);
+ }
+
+ C* c_;
+ Method m_;
+ ReturnType<R> r_;
+ std::tuple<Args&&...> args_;
+};
+
+template <typename C, typename R, typename... Args>
+class ConstMethodCall : public rtc::Message, public rtc::MessageHandler {
+ public:
+ typedef R (C::*Method)(Args...) const;
+ ConstMethodCall(const C* c, Method m, Args&&... args)
+ : c_(c),
+ m_(m),
+ args_(std::forward_as_tuple(std::forward<Args>(args)...)) {}
+
+ R Marshal(const rtc::Location& posted_from, rtc::Thread* t) {
+ internal::SynchronousMethodCall(this).Invoke(posted_from, t);
+ return r_.moved_result();
+ }
+
+ private:
+ void OnMessage(rtc::Message*) { Invoke(std::index_sequence_for<Args...>()); }
+
+ template <size_t... Is>
+ void Invoke(std::index_sequence<Is...>) {
+ r_.Invoke(c_, m_, std::move(std::get<Is>(args_))...);
+ }
+
+ const C* c_;
+ Method m_;
+ ReturnType<R> r_;
+ std::tuple<Args&&...> args_;
+};
+
// Helper macros to reduce code duplication.
#define PROXY_MAP_BOILERPLATE(c) \
template <class INTERNAL_CLASS> \
@@ -113,14 +213,16 @@
// 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() { \
- destructor_thread()->template Invoke<void>(RTC_FROM_HERE, \
- [&] { c_ = nullptr; }); \
- } \
- \
- private: \
+#define REFCOUNTED_PROXY_MAP_BOILERPLATE(c) \
+ protected: \
+ ~c##ProxyWithInternal() { \
+ MethodCall<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
@@ -128,14 +230,16 @@
// 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() { \
- destructor_thread()->template Invoke<void>(RTC_FROM_HERE, \
- [&] { delete c_; }); \
- } \
- \
- private: \
+#define OWNED_PROXY_MAP_BOILERPLATE(c) \
+ public: \
+ ~c##ProxyWithInternal() { \
+ MethodCall<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) \
@@ -185,95 +289,112 @@
\
public: // NOLINTNEXTLINE
-#define PROXY_METHOD0_BASE(t, modifier, r, method) \
- r method() modifier override { \
- return t->template Invoke<r>(RTC_FROM_HERE, [&] { return c_->method(); }); \
+#define PROXY_METHOD0(r, method) \
+ r method() override { \
+ MethodCall<C, r> call(c_, &C::method); \
+ return call.Marshal(RTC_FROM_HERE, signaling_thread_); \
}
-#define PROXY_METHOD1_BASE(t, modifier, r, method, t1) \
- r method(t1 a1) modifier override { \
- return t->template Invoke<r>(RTC_FROM_HERE, \
- [&] { return c_->method(std::move(a1)); }); \
+#define PROXY_CONSTMETHOD0(r, method) \
+ r method() const override { \
+ ConstMethodCall<C, r> call(c_, &C::method); \
+ return call.Marshal(RTC_FROM_HERE, signaling_thread_); \
}
-#define PROXY_METHOD2_BASE(t, modifier, r, method, t1, t2) \
- r method(t1 a1, t2 a2) modifier override { \
- return t->template Invoke<r>(RTC_FROM_HERE, [&] { \
- return c_->method(std::move(a1), std::move(a2)); \
- }); \
+#define PROXY_METHOD1(r, method, t1) \
+ r method(t1 a1) override { \
+ MethodCall<C, r, t1> call(c_, &C::method, std::move(a1)); \
+ return call.Marshal(RTC_FROM_HERE, signaling_thread_); \
}
-#define PROXY_METHOD3_BASE(t, modifier, r, method, t1, t2, t3) \
- r method(t1 a1, t2 a2, t3 a3) modifier override { \
- return t->template Invoke<r>(RTC_FROM_HERE, [&] { \
- return c_->method(std::move(a1), std::move(a2), std::move(a3)); \
- }); \
+#define PROXY_CONSTMETHOD1(r, method, t1) \
+ r method(t1 a1) const override { \
+ ConstMethodCall<C, r, t1> call(c_, &C::method, std::move(a1)); \
+ return call.Marshal(RTC_FROM_HERE, signaling_thread_); \
}
-#define PROXY_METHOD4_BASE(t, modifier, r, method, t1, t2, t3, t4) \
- r method(t1 a1, t2 a2, t3 a3, t4 a4) modifier override { \
- return t->template Invoke<r>(RTC_FROM_HERE, [&] { \
- return c_->method(std::move(a1), std::move(a2), std::move(a3), \
- std::move(a4)); \
- }); \
+#define PROXY_METHOD2(r, method, t1, t2) \
+ r method(t1 a1, t2 a2) override { \
+ MethodCall<C, r, t1, t2> call(c_, &C::method, std::move(a1), \
+ std::move(a2)); \
+ return call.Marshal(RTC_FROM_HERE, signaling_thread_); \
}
-#define PROXY_METHOD5_BASE(t, modifier, r, method, t1, t2, t3, t4, t5) \
- r method(t1 a1, t2 a2, t3 a3, t4 a4, t5 a5) modifier override { \
- return t->template Invoke<r>(RTC_FROM_HERE, [&] { \
- return c_->method(std::move(a1), std::move(a2), std::move(a3), \
- std::move(a4), std::move(a5)); \
- }); \
+#define PROXY_METHOD3(r, method, t1, t2, t3) \
+ r method(t1 a1, t2 a2, t3 a3) override { \
+ MethodCall<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_METHOD0(r, method) \
- PROXY_METHOD0_BASE(signaling_thread_, , r, method)
+#define PROXY_METHOD4(r, method, t1, t2, t3, t4) \
+ r method(t1 a1, t2 a2, t3 a3, t4 a4) override { \
+ MethodCall<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_CONSTMETHOD0(r, method) \
- PROXY_METHOD0_BASE(signaling_thread_, const, r, method)
-
-#define PROXY_METHOD1(r, method, t1) \
- PROXY_METHOD1_BASE(signaling_thread_, , r, method, t1)
-
-#define PROXY_CONSTMETHOD1(r, method, t1) \
- PROXY_METHOD1_BASE(signaling_thread_, const, r, method, t1)
-
-#define PROXY_METHOD2(r, method, t1, t2) \
- PROXY_METHOD2_BASE(signaling_thread_, , r, method, t1, t2)
-
-#define PROXY_METHOD3(r, method, t1, t2, t3) \
- PROXY_METHOD3_BASE(signaling_thread_, , r, method, t1, t2, t3)
-
-#define PROXY_METHOD4(r, method, t1, t2, t3, t4) \
- PROXY_METHOD4_BASE(signaling_thread_, , r, method, t1, t2, t3, t4)
-
-#define PROXY_METHOD5(r, method, t1, t2, t3, t4, t5) \
- PROXY_METHOD5_BASE(signaling_thread_, , r, method, t1, t2, t3, t4, t5)
+#define PROXY_METHOD5(r, method, t1, t2, t3, t4, t5) \
+ r method(t1 a1, t2 a2, t3 a3, t4 a4, t5 a5) override { \
+ MethodCall<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) \
- PROXY_METHOD0_BASE(worker_thread_, , r, method)
+#define PROXY_WORKER_METHOD0(r, method) \
+ r method() override { \
+ MethodCall<C, r> call(c_, &C::method); \
+ return call.Marshal(RTC_FROM_HERE, worker_thread_); \
+ }
-#define PROXY_WORKER_CONSTMETHOD0(r, method) \
- PROXY_METHOD0_BASE(worker_thread_, const, r, method)
+#define PROXY_WORKER_CONSTMETHOD0(r, method) \
+ r method() const override { \
+ ConstMethodCall<C, r> call(c_, &C::method); \
+ return call.Marshal(RTC_FROM_HERE, worker_thread_); \
+ }
-#define PROXY_WORKER_METHOD1(r, method, t1) \
- PROXY_METHOD1_BASE(worker_thread_, , r, method, t1)
+#define PROXY_WORKER_METHOD1(r, method, t1) \
+ r method(t1 a1) override { \
+ MethodCall<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) \
- PROXY_METHOD1_BASE(worker_thread_, const, r, method, t1)
+#define PROXY_WORKER_CONSTMETHOD1(r, method, t1) \
+ r method(t1 a1) const override { \
+ ConstMethodCall<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) \
- PROXY_METHOD2_BASE(worker_thread_, , r, method, t1, t2)
+#define PROXY_WORKER_METHOD2(r, method, t1, t2) \
+ r method(t1 a1, t2 a2) override { \
+ MethodCall<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) \
- PROXY_METHOD2_BASE(worker_thread_, const, r, method, t1, t2)
+#define PROXY_WORKER_CONSTMETHOD2(r, method, t1, t2) \
+ r method(t1 a1, t2 a2) const override { \
+ ConstMethodCall<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) \
- PROXY_METHOD3_BASE(worker_thread_, , r, method, t1, t2, t3)
+#define PROXY_WORKER_METHOD3(r, method, t1, t2, t3) \
+ r method(t1 a1, t2 a2, t3 a3) override { \
+ MethodCall<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) \
- PROXY_METHOD3_BASE(worker_thread_, const, r, method, t1, t2, t3)
+#define PROXY_WORKER_CONSTMETHOD3(r, method, t1, t2) \
+ r method(t1 a1, t2 a2, t3 a3) const override { \
+ ConstMethodCall<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
