67 lines
2.1 KiB
C++
67 lines
2.1 KiB
C++
/*
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* Copyright (C) 2016 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef WIFICOND_EVENT_LOOP_H_
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#define WIFICOND_EVENT_LOOP_H_
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#include <functional>
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namespace android {
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namespace wificond {
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// Abstract class for dispatching tasks.
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class EventLoop {
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public:
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enum ReadyMode {
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kModeInput,
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kModeOutput
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};
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virtual ~EventLoop() {}
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// Enqueues a callback.
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// This function can be called on any thread.
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virtual void PostTask(const std::function<void()>& callback) = 0;
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// Enqueues a callback to be processed after a specified period of time.
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// |delay_ms| is delay time in milliseconds. It should not be negative.
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// This function can be called on any thread.
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virtual void PostDelayedTask(const std::function<void()>& callback,
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int64_t delay_ms) = 0;
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// Monitoring file descriptor for data.
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// Callback will be executed when specific file descriptor is ready.
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// File descriptor is provided as a parameter to this callback:
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// This function can be called on any thread.
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// This returns true upon success and returns false when it failed.
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virtual bool WatchFileDescriptor(
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int fd,
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ReadyMode mode,
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const std::function<void(int)>& callback_) = 0;
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// Stop monitoring file descriptor |fd|.
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// This function can be called on any thread.
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// This returns true upon success and returns false when it failed to
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// remove the file descriptor, or this file descriptor was not registered
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// for watching.
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virtual bool StopWatchFileDescriptor(int fd) = 0;
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};
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} // namespace wificond
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} // namespace android
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#endif // WIFICOND_EVENT_LOOP_H_
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