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