Atmosphere-libs/libstratosphere/source/os/impl/os_internal_condition_variable_impl.pthread.cpp

74 lines
2.6 KiB
C++

/*
* Copyright (c) Atmosphère-NX
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stratosphere.hpp>
#include "os_timeout_helper.hpp"
#include "os_thread_manager.hpp"
#if defined(AMS_OS_IMPL_USE_PTHREADS)
namespace ams::os::impl {
namespace {
}
void InternalConditionVariableImpl::Initialize() {
/* TODO: What should be done here? */
}
void InternalConditionVariableImpl::Finalize() {
/* TODO: What should be done here? */
}
void InternalConditionVariableImpl::Signal() {
AMS_ABORT_UNLESS(pthread_cond_signal(std::addressof(m_pthread_cond)) == 0);
}
void InternalConditionVariableImpl::Broadcast() {
AMS_ABORT_UNLESS(pthread_cond_broadcast(std::addressof(m_pthread_cond)) == 0);
}
void InternalConditionVariableImpl::Wait(InternalCriticalSection *cs) {
AMS_ABORT_UNLESS(pthread_cond_wait(std::addressof(m_pthread_cond), std::addressof(cs->Get()->m_pthread_mutex)) == 0);
}
ConditionVariableStatus InternalConditionVariableImpl::TimedWait(InternalCriticalSection *cs, const TimeoutHelper &timeout_helper) {
struct timespec ts;
const auto gettime_res = clock_gettime(CLOCK_REALTIME, std::addressof(ts));
AMS_ASSERT(gettime_res == 0);
AMS_UNUSED(gettime_res);
constexpr s64 NanoSecondsPerSecond = TimeSpan::FromSeconds(1).GetNanoSeconds();
const s64 ns = timeout_helper.GetTimeLeftOnTarget().GetNanoSeconds();
ts.tv_sec += (ns / NanoSecondsPerSecond);
ts.tv_nsec += (ns % NanoSecondsPerSecond);
if (ts.tv_nsec >= NanoSecondsPerSecond) {
ts.tv_sec += ts.tv_nsec / NanoSecondsPerSecond;
ts.tv_nsec %= NanoSecondsPerSecond;
}
const auto res = pthread_cond_timedwait(std::addressof(m_pthread_cond), std::addressof(cs->Get()->m_pthread_mutex), std::addressof(ts));
if (res != 0) {
AMS_ABORT_UNLESS(res == ETIMEDOUT);
return ConditionVariableStatus::TimedOut;
}
return ConditionVariableStatus::Success;
}
}
#endif