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https://github.com/Atmosphere-NX/Atmosphere
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42 lines
1.2 KiB
C++
42 lines
1.2 KiB
C++
#include <mesosphere/threading/KConditionVariable.hpp>
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#include <mesosphere/threading/KScheduler.hpp>
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#include <mesosphere/core/KCoreContext.hpp>
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namespace mesosphere
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{
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void KConditionVariable::wait_until_impl(const KSystemClock::time_point &timeoutPoint) noexcept
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{
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// Official kernel counts number of waiters, but that isn't necessary
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bool hasWaited = false;
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KThread *currentThread = KCoreContext::GetCurrentInstance().GetCurrentThread();
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{
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KScopedCriticalSection criticalSection{};
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mutex_.unlock();
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if (currentThread->WaitForKernelSync(waiterList) && timeoutPoint > KSystemClock::time_point{}) {
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hasWaited = true;
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currentThread->SetAlarmTime(timeoutPoint);
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}
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}
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if (hasWaited) {
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currentThread->ClearAlarm();
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}
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mutex_.lock();
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}
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void KConditionVariable::notify_one() noexcept
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{
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KScopedCriticalSection criticalSection{};
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auto t = waiterList.begin();
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if (t != waiterList.end()) {
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t->ResumeFromKernelSync();
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}
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}
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void KConditionVariable::notify_all() noexcept
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{
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KScopedCriticalSection criticalSection{};
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KThread::ResumeAllFromKernelSync(waiterList);
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}
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}
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