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Chromium requires that all code that waits on a sync primitive be annotated with ScopedAllowBaseSyncPrimitives(ForTesting). Webrtc already imports ScopedAllowBaseSyncPrimitives. ScopedAllowBaseSyncPrimitivesForTesting is equivalent but can only be used in tests and doesn't required adding a friend declaration to thread_restrictions.h. Previously, the code that is annotated with ScopedAllowBaseSyncPrimitivesForTesting in this CL didn't fail because it ran on a TaskRunner annotated with the deprecated WithBaseSyncPrimitives() trait (cf. https://cs.chromium.org/chromium/src/content/renderer/media/webrtc/task_queue_factory_unittest.cc?l=23&rcl=362f3723ac358d932ea2e3af65512a1243697a31). Change-Id: Id7cfa2ea108870de86dc887458ae783c807791cc Bug: chromium:889029 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/128823 Commit-Queue: Francois Pierre Doray <fdoray@chromium.org> Reviewed-by: Tommi <tommi@webrtc.org> Cr-Commit-Position: refs/heads/master@{#27339}
74 lines
2.1 KiB
C++
74 lines
2.1 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_EVENT_H_
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#define RTC_BASE_EVENT_H_
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#if defined(WEBRTC_WIN)
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#include <windows.h>
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#elif defined(WEBRTC_POSIX)
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#include <pthread.h>
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#else
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#error "Must define either WEBRTC_WIN or WEBRTC_POSIX."
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#endif
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namespace rtc {
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class Event {
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public:
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static const int kForever = -1;
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Event();
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Event(bool manual_reset, bool initially_signaled);
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Event(const Event&) = delete;
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Event& operator=(const Event&) = delete;
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~Event();
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void Set();
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void Reset();
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// Wait for the event to become signaled, for the specified number of
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// |milliseconds|. To wait indefinetly, pass kForever.
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bool Wait(int milliseconds);
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private:
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#if defined(WEBRTC_WIN)
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HANDLE event_handle_;
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#elif defined(WEBRTC_POSIX)
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pthread_mutex_t event_mutex_;
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pthread_cond_t event_cond_;
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const bool is_manual_reset_;
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bool event_status_;
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#endif
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};
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// These classes are provided for compatibility with Chromium.
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// The rtc::Event implementation is overriden inside of Chromium for the
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// purposes of detecting when threads are blocked that shouldn't be as well as
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// to use the more accurate event implementation that's there than is provided
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// by default on some platforms (e.g. Windows).
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// When building with standalone WebRTC, this class is a noop.
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// For further information, please see the
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// ScopedAllowBaseSyncPrimitives(ForTesting) classes in Chromium.
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class ScopedAllowBaseSyncPrimitives {
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public:
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ScopedAllowBaseSyncPrimitives() {}
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~ScopedAllowBaseSyncPrimitives() {}
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};
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class ScopedAllowBaseSyncPrimitivesForTesting {
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public:
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ScopedAllowBaseSyncPrimitivesForTesting() {}
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~ScopedAllowBaseSyncPrimitivesForTesting() {}
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};
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} // namespace rtc
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#endif // RTC_BASE_EVENT_H_
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