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70 lines
2.2 KiB
C++
70 lines
2.2 KiB
C++
/**
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* The MIT License (MIT)
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*
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* Copyright (c) 2013-2020 Winlin
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy of
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* this software and associated documentation files (the "Software"), to deal in
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* the Software without restriction, including without limitation the rights to
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* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
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* the Software, and to permit persons to whom the Software is furnished to do so,
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* subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
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* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
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* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#ifndef SRS_APP_THREADS_HPP
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#define SRS_APP_THREADS_HPP
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#include <srs_core.hpp>
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#include <srs_app_hourglass.hpp>
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// Protect server in high load.
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class SrsCircuitBreaker : public ISrsFastTimer
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{
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private:
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// The config for high/critical water level.
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bool enabled_;
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int high_threshold_;
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int high_pulse_;
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int critical_threshold_;
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int critical_pulse_;
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int dying_threshold_;
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int dying_pulse_;
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private:
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// Reset the water-level when CPU is low for N times.
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// @note To avoid the CPU change rapidly.
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int hybrid_high_water_level_;
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int hybrid_critical_water_level_;
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int hybrid_dying_water_level_;
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public:
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SrsCircuitBreaker();
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virtual ~SrsCircuitBreaker();
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public:
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srs_error_t initialize();
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public:
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// Whether hybrid server water-level is high.
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bool hybrid_high_water_level();
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bool hybrid_critical_water_level();
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bool hybrid_dying_water_level();
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// interface ISrsFastTimer
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private:
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srs_error_t on_timer(srs_utime_t interval);
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};
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extern SrsCircuitBreaker* _srs_circuit_breaker;
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// Initialize global or thread-local variables.
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extern srs_error_t srs_thread_initialize();
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#endif
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