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Atmosphere/libraries/libstratosphere/source/os/os_sdk_condition_variable.cpp
2020-11-14 03:37:51 -08:00

48 lines
1.8 KiB
C++

/*
* Copyright (c) 2018-2020 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 "impl/os_thread_manager.hpp"
#include "impl/os_timeout_helper.hpp"
namespace ams::os {
void SdkConditionVariableType::Wait(SdkMutexType &mutex) {
/* Check that we own the mutex. */
AMS_ABORT_UNLESS(os::IsSdkMutexLockedByCurrentThread(std::addressof(mutex)));
/* Wait on the mutex. */
GetReference(this->_storage).Wait(GetPointer(mutex._storage));
}
bool SdkConditionVariableType::TimedWait(SdkMutexType &mutex, TimeSpan timeout) {
/* Check preconditions. */
AMS_ASSERT(timeout.GetNanoSeconds() >= 0);
AMS_ABORT_UNLESS(os::IsSdkMutexLockedByCurrentThread(std::addressof(mutex)));
/* Handle zero timeout by unlocking and re-locking. */
if (timeout == TimeSpan(0)) {
GetReference(mutex._storage).Leave();
GetReference(mutex._storage).Enter();
return false;
}
/* Handle timed wait. */
impl::TimeoutHelper timeout_helper(timeout);
auto status = GetReference(this->_storage).TimedWait(GetPointer(mutex._storage), timeout_helper);
return status == ConditionVariableStatus::Success;
}
}