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108 lines
2.5 KiB
C++
108 lines
2.5 KiB
C++
/*
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* SRT - Secure, Reliable, Transport
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* Copyright (c) 2020 Haivision Systems Inc.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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*/
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#include "platform_sys.h"
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#include <iomanip>
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#include <math.h>
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#include <stdexcept>
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#include "sync.h"
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#include "srt_compat.h"
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#include "common.h"
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////////////////////////////////////////////////////////////////////////////////
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//
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// Clock frequency helpers
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//
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////////////////////////////////////////////////////////////////////////////////
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namespace {
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template <int val>
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int pow10();
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template <>
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int pow10<10>()
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{
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return 1;
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}
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template <int val>
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int pow10()
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{
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return 1 + pow10<val / 10>();
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}
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}
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int srt::sync::clockSubsecondPrecision()
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{
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const int64_t ticks_per_sec = (srt::sync::steady_clock::period::den / srt::sync::steady_clock::period::num);
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const int decimals = pow10<ticks_per_sec>();
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return decimals;
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}
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////////////////////////////////////////////////////////////////////////////////
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//
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// SyncCond (based on stl chrono C++11)
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//
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////////////////////////////////////////////////////////////////////////////////
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srt::sync::Condition::Condition() {}
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srt::sync::Condition::~Condition() {}
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void srt::sync::Condition::init() {}
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void srt::sync::Condition::destroy() {}
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void srt::sync::Condition::wait(UniqueLock& lock)
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{
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m_cv.wait(lock);
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}
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bool srt::sync::Condition::wait_for(UniqueLock& lock, const steady_clock::duration& rel_time)
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{
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// Another possible implementation is wait_until(steady_clock::now() + timeout);
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return m_cv.wait_for(lock, rel_time) != std::cv_status::timeout;
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}
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bool srt::sync::Condition::wait_until(UniqueLock& lock, const steady_clock::time_point& timeout_time)
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{
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return m_cv.wait_until(lock, timeout_time) != std::cv_status::timeout;
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}
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void srt::sync::Condition::notify_one()
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{
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m_cv.notify_one();
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}
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void srt::sync::Condition::notify_all()
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{
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m_cv.notify_all();
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}
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////////////////////////////////////////////////////////////////////////////////
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//
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// CThreadError class - thread local storage error wrapper
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//
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////////////////////////////////////////////////////////////////////////////////
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// Threal local error will be used by CUDTUnited
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// with a static scope, therefore static thread_local
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static thread_local srt::CUDTException s_thErr;
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void srt::sync::SetThreadLocalError(const srt::CUDTException& e)
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{
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s_thErr = e;
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}
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srt::CUDTException& srt::sync::GetThreadLocalError()
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{
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return s_thErr;
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}
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