AuroraSupport/AuroraRuntime
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[+] ConditionEx::WaitForSignalAbsNS

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This commit is contained in:
Reece Wilson 2023-11-29 06:08:09 +00:00
parent f06248f687
commit 22f2e73954
2 changed files with 24 additions and 17 deletions
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13
Include/Aurora/Threading/Primitives/ConditionEx.hpp
View File

@ -10,21 +10,26 @@
namespace Aurora::Threading::Primitives
{
/**
A comprehensive CV that does not strictly abide by typical assumptions. <br>
This object depends on the synchronization of primitives within our abstraction layer rather than the OS's implementation of condition variables. <br>
A more comprehensive CV that does not strictly abide by the alternative stricter assumptions.
This object depends on the synchronization of primitives within our abstraction layer rather than
the OS's implementation of condition variables.
In some instances, the cond mutex/var implementations are directly backed by an OS primitive,
sometimes they're reimplemented. In this primitive any locking interface can be used, and an
AuThreadPrimitive is used for the sleep operation.
Note: Missing 'pWaitable's cannnot serve as an `atomic wait for while is [not] value` operation.
There are no legal use cases for this feature. It's just there.
*/
struct ConditionEx
{
virtual void WaitForSignal() = 0;
virtual void WaitForSignal(IWaitable *pWaitable) = 0;
virtual void WaitForSignal(const AuSPtr<IWaitable> &pWaitable) = 0;
virtual bool WaitForSignalNS(AuUInt64 uRelativeNanoseconds) = 0;
virtual bool WaitForSignalNS(IWaitable *pWaitable, AuUInt64 uRelativeNanoseconds) = 0;
virtual bool WaitForSignalNS(const AuSPtr<IWaitable> &pWaitable, AuUInt64 uRelativeNanoseconds) = 0;
virtual bool WaitForSignalAbsNS(AuUInt64 uAbsNanoseconds) = 0;
virtual bool WaitForSignalAbsNS(const AuSPtr<IWaitable> &pWaitable, AuUInt64 uAbsNanoseconds) = 0;
virtual void Broadcast() = 0;
virtual void Signal() = 0;
};

26
Source/Threading/Primitives/AuConditionEx.cpp
View File

@ -15,14 +15,15 @@ namespace Aurora::Threading::Primitives
{
SemaphoreConditionVariableImpl();
void WaitForSignal(IWaitable *pWaitable) override;
void WaitForSignal(const AuSPtr<IWaitable> &pWaitable) override;
void WaitForSignal() override;
bool WaitForSignalNS(AuUInt64 uRelativeNanoseconds) override;
bool WaitForSignalNS(IWaitable *waitable, AuUInt64 uRelativeNanoseconds) override;
bool WaitForSignalNS(const AuSPtr<IWaitable> &waitable, AuUInt64 uRelativeNanoseconds) override;
bool WaitForSignalAbsNS(AuUInt64 uAbsNanoseconds) override;
bool WaitForSignalAbsNS(const AuSPtr<IWaitable> &pWaitable, AuUInt64 uAbsNanoseconds) override;
void Signal() override;
void Broadcast() override;
@ -43,13 +44,7 @@ namespace Aurora::Threading::Primitives
return WaitForSignalNS(nullptr, uRelativeNanoseconds);
}
bool SemaphoreConditionVariableImpl::WaitForSignalNS(IWaitable *pWaitable, AuUInt64 uRelativeNanoseconds)
{
return WaitForSignalNS(pWaitable ? AuUnsafeRaiiToShared(pWaitable) : AuSPtr<IWaitable> {},
uRelativeNanoseconds);
}
bool SemaphoreConditionVariableImpl::WaitForSignalNS(const AuSPtr<IWaitable> &pWaitable,
bool SemaphoreConditionVariableImpl::WaitForSignalAbsNS(const AuSPtr<IWaitable> &pWaitable,
AuUInt64 uRelativeNanoseconds)
{
AuAtomicAdd(&this->uWaiters_, 1u);
@ -59,7 +54,7 @@ namespace Aurora::Threading::Primitives
pWaitable->Unlock();
}
auto bSuccess = this->s_.LockNS(uRelativeNanoseconds);
auto bSuccess = this->s_.LockAbsNS(uRelativeNanoseconds);
if (!bSuccess)
{
auto uWaiters = this->uWaiters_;
@ -85,9 +80,11 @@ namespace Aurora::Threading::Primitives
return bSuccess;
}
void SemaphoreConditionVariableImpl::WaitForSignal(IWaitable *pWaitable)
bool SemaphoreConditionVariableImpl::WaitForSignalNS(const AuSPtr<IWaitable> &pWaitable,
AuUInt64 uAbsNanoseconds)
{
return WaitForSignal(AuUnsafeRaiiToShared(pWaitable));
return this->WaitForSignalAbsNS(pWaitable,
uAbsNanoseconds ? AuTime::SteadyClockNS() + uAbsNanoseconds : 0);
}
void SemaphoreConditionVariableImpl::WaitForSignal(const AuSPtr<IWaitable> &pWaitable)
@ -112,6 +109,11 @@ namespace Aurora::Threading::Primitives
WaitForSignal(nullptr);
}
bool SemaphoreConditionVariableImpl::WaitForSignalAbsNS(AuUInt64 uAbsNanoseconds)
{
return this->WaitForSignalAbsNS({}, uAbsNanoseconds);
}
void SemaphoreConditionVariableImpl::Signal()
{
AuUInt32 uWaitCount {};