61 lines
2.0 KiB
C
61 lines
2.0 KiB
C
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/*
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* Copyright 2014 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_ASYNC_INVOKER_INL_H_
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#define RTC_BASE_ASYNC_INVOKER_INL_H_
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#include "api/scoped_refptr.h"
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#include "rtc_base/bind.h"
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#include "rtc_base/event.h"
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#include "rtc_base/message_handler.h"
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#include "rtc_base/ref_counted_object.h"
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#include "rtc_base/third_party/sigslot/sigslot.h"
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#include "rtc_base/thread.h"
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#include "rtc_base/thread_annotations.h"
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namespace rtc {
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class AsyncInvoker;
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// Helper class for AsyncInvoker. Runs a task and triggers a callback
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// on the calling thread if necessary.
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class AsyncClosure {
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public:
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explicit AsyncClosure(AsyncInvoker* invoker);
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virtual ~AsyncClosure();
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// Runs the asynchronous task, and triggers a callback to the calling
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// thread if needed. Should be called from the target thread.
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virtual void Execute() = 0;
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protected:
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AsyncInvoker* invoker_;
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// Reference counted so that if the AsyncInvoker destructor finishes before
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// an AsyncClosure's destructor that's about to call
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// "invocation_complete_->Set()", it's not dereferenced after being
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// destroyed.
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scoped_refptr<RefCountedObject<Event>> invocation_complete_;
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};
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// Simple closure that doesn't trigger a callback for the calling thread.
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template <class FunctorT>
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class FireAndForgetAsyncClosure : public AsyncClosure {
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public:
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explicit FireAndForgetAsyncClosure(AsyncInvoker* invoker, FunctorT&& functor)
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: AsyncClosure(invoker), functor_(std::forward<FunctorT>(functor)) {}
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virtual void Execute() { functor_(); }
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private:
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typename std::decay<FunctorT>::type functor_;
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};
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} // namespace rtc
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#endif // RTC_BASE_ASYNC_INVOKER_INL_H_
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