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srs/trunk/src/app/srs_app_async_call.hpp

83 lines
2.7 KiB
C++

/**
* The MIT License (MIT)
*
* Copyright (c) 2013-2020 Winlin
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of
* this software and associated documentation files (the "Software"), to deal in
* the Software without restriction, including without limitation the rights to
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
* the Software, and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#ifndef SRS_APP_ASYNC_CALL_HPP
#define SRS_APP_ASYNC_CALL_HPP
#include <srs_core.hpp>
#include <string>
#include <vector>
#include <srs_app_st.hpp>
// The async call for http hooks, for the http hooks will switch st-thread,
// so we must use isolate thread to avoid the thread corrupt,
// for example, when dvr call http hooks, the video receive thread got
// a video and pass it to the dvr again.
// Futhurmore, the aync call never block the main worker thread.
class ISrsAsyncCallTask
{
public:
ISrsAsyncCallTask();
virtual ~ISrsAsyncCallTask();
public:
// Execute the task async.
// This method is the actual execute method of task,
// for example, to notify callback server.
virtual srs_error_t call() = 0;
// Convert task to string to describe it.
// It's used for logger.
virtual std::string to_string() = 0;
};
// The async callback for dvr, callback and other async worker.
// When worker call with the task, the worker will do it in isolate thread.
// That is, the task is execute/call in async mode.
class SrsAsyncCallWorker : public ISrsCoroutineHandler
{
private:
SrsCoroutine* trd;
protected:
std::vector<ISrsAsyncCallTask*> tasks;
srs_cond_t wait;
srs_mutex_t lock;
public:
SrsAsyncCallWorker();
virtual ~SrsAsyncCallWorker();
public:
virtual srs_error_t execute(ISrsAsyncCallTask* t);
virtual int count();
public:
virtual srs_error_t start();
virtual void stop();
// Interface ISrsReusableThreadHandler
public:
virtual srs_error_t cycle();
private:
virtual void flush_tasks();
};
#endif