AuroraRuntime/Source/Threading/Threads/OSThread.cpp

/***
    Copyright (C) 2021 J Reece Wilson (a/k/a "Reece"). All rights reserved.

    File: OSThread.cpp
    Date: 2021-6-12
    Author: Reece
***/
#include <Source/RuntimeInternal.hpp>
#include "Threads.hpp"
#include "OSThread.hpp"
#include "../WaitFor.hpp"
#include "ThreadHandles.hpp"
#include "TLSView.hpp"

#if defined(AURORA_IS_LINUX_DERIVED)
    #include <sys/resource.h>
#endif

#if defined(AURORA_HAS_PTHREADS)
    #include <sched.h>
#endif

#if defined(AURORA_PLATFORM_WIN32)
    #include <Aux_ulib.h>
#endif

#include "SpawnThread.hpp"

namespace Aurora::Threading::Threads
{
    static ThreadInfo gDummyThreadInfo;

    OSThread::OSThread(const ThreadInfo &info) : info_(info)
    {
        this->name_ = info.name.value_or("Aurora Thread");
        this->terminated_ = Primitives::EventShared(true, false);

        // maybe we should atomic exchange compare these when needed frogthink
        this->terminateSignal_    = Primitives::EventShared(true, false, true);
        this->terminatedSignalLs_ = Loop::NewLSEvent(true, false);
        this->terminateSignalLs_  = Loop::NewLSEvent(true, false, true);

        this->exitOnlyOnce_ = Primitives::CriticalSectionUnique();
        SysAssert(this->terminated_ ? true : false, "out of memory");
    }

    OSThread::OSThread() : info_(gDummyThreadInfo)
    {
        this->name_ = "Main Thread";
        this->terminated_ = Primitives::EventShared(true, false);
        this->exitOnlyOnce_ = Primitives::CriticalSectionUnique();
    }

    OSThread::OSThread(AuUInt64 id) : info_(gDummyThreadInfo)
    {
        this->name_ = "System Thread";
        this->handle_ = reinterpret_cast<decltype(handle_)>(id);
    }

    OSThread::~OSThread()
    {
        bool bDetached {};
        bool bDetachedSuccess {};

        if (this->contextUsed_)
        {
            if (this->detached_)
            {
                bDetached = true;
            }
            else
            {
                Exit();
                WaitFor(this->terminated_.get());
            }
        }

        this->terminated_.reset();
        FreeOSContext();

        if (bDetached)
        {
            if (this->tlsReferenceThread_)
            {
                AU_LOCK_GUARD(this->tlsLock_);
                AU_LOCK_GUARD(this->tlsReferenceThread_->tlsLock_);

                AuExchange(this->tlsReferenceThread_->tls_, this->tls_);
                AuExchange(this->tlsReferenceThread_->threadFeatures_, this->threadFeatures_);
                
                bDetachedSuccess = true;
            }
        }

        if (bDetachedSuccess || !bDetached)
        {
            HookReleaseThreadResources();
        }
    }

    // Called whenever an aurora thread is exiting
    void OSThread::HookOnExit()
    {

    }

    // Called whenever a thread object is released, or on thread termination
    // Whichever is soonest
    // It is possible a user may wish to keep a thread handle open
    // Is is expected for a system thread to release on dtor unlike our aurora threads 
    void OSThread::HookReleaseThreadResources()
    {
        tls_.reset();

        for (const auto &feature : this->threadFeatures_)
        {
            feature->Cleanup();
        }
    }

    void OSThread::AddLastHopeTlsHook(const AuSPtr<AuThreads::IThreadFeature> &feature)
    {
        // TODO: mutex
        if (!feature)
        {
            return;
        }
        AuTryInsert(this->threadFeatures_, feature);
    }

    void OSThread::Detach()
    {
        this->detached_ = true;
    }

    AuSPtr<IWaitable> OSThread::AsWaitable()
    {
        return this->terminated_;
    }

    void OSThread::SendExitSignal()
    {
        this->exiting_ = true;

        if (this->terminateSignalLs_)
        {
            this->terminateSignalLs_->Set();
        }

        if (this->terminateSignal_)
        {
            this->terminateSignal_->Set();
        }
    }

    bool OSThread::Run()
    {
        if (!this->terminated_)
        {
            SysPanic("::Run called on system thread");
        }

        if (AuExchange(this->contextUsed_, true))
        {
            return false;
        }

        this->terminated_->Reset();

        return ExecuteNewOSContext([=]()
        {
            try
            {
                // this functional backends are being deprecated
                if (this->info_.callbacks)
                {
                    this->info_.callbacks->OnEntry(this);
                }
            }
            catch (...)
            {
                Debug::PrintError();
            }
        });
    }

    void OSThread::Exit()
    {
        while ((!this->terminated_) || (!this->terminated_->TryLock()))
        {
            if (Exit(false)) break;
        }
    }

    bool OSThread::Exit(bool willReturnToOS)
    {
        if (GetThread() == this)
        {
            if (!this->InternalKill(false))
            {
                return false;
            }

            // release handle + sigterm
            if (!willReturnToOS)
            {
                TeminateOSContext(true);
                while (true)
                {
                    YieldToOtherThread();
                }
            }
        }
        else
        {
            // exit signal 
            this->exiting_ = true;

            if (!this->terminated_)
            {
                return true;
            }

            // attempt to join with the thread once it has exited, or timeout 
            if (WaitFor(this->terminated_.get(), 15 * 1000))
            {
                return true;
            }

            // Do not force terminate if we're marked as dead and still running
            // The thread must've requested suicide and got stuck in a lengthy clean up effort
            if (!this->exitOnlyOnce_->TryLock())
            {
                AuLogWarn("Watchdog error - OS thread context didn't finish in 15 seconds, but he should exiting now.");
                return false;
            }

            AuLogWarn("Watchdog error - OS thread context didn't finish in 15 seconds, forcefully terminating without a watchdog overlooking onExit");

            // Kill the current OS thread instance
            TeminateOSContext(false);

            // Dispatch kill callback from within an emulated thread context (no switch, just just change thread tls)
            ExecuteInDeadThread([=]()
            {
                this->InternalKill(true);
            });

            this->exitOnlyOnce_->Unlock();
        }
        return true;
    }

    bool OSThread::Exiting()
    {
        return this->exiting_;
    }

    void OSThread::SetName(const AuString &name)
    {
        this->name_ = name;
    }

    EThreadThrottle OSThread::GetThrottle()
    {
        return this->throttle_;
    }

    EThreadPriority OSThread::GetPriority()
    {
        return this->prio_;
    }

    AuHwInfo::CpuBitId OSThread::GetMask()
    {
        return this->mask_;
    }

    AuString OSThread::GetName()
    {
        return this->name_;
    }

    void OSThread::SetAffinity(const HWInfo::CpuBitId &mask)
    {
        auto zero = HWInfo::CpuBitId();
        
        if (mask == zero ||
            mask == zero.Not())
        {
            this->mask_ = HWInfo::GetCPUInfo().maskAllCores;
            this->userManagingAffinity_ = false;

            UpdatePrio(this->throttle_, this->prio_);
        }
        else
        {
            this->mask_ = mask;
            this->userManagingAffinity_ = true;
        }

        UpdateAffinity(this->mask_);
    }

    void OSThread::SetPriority(EThreadPriority prio)
    {
        if (!EThreadPriorityIsValid(prio))
        {
            return;
        }

        UpdatePrio(this->throttle_, prio);
    }

    void OSThread::SetThrottle(EThreadThrottle throttle)
    {
        if (!EThreadThrottleIsValid(throttle))
        {
            return;
        }

        this->throttle_ = throttle;
        UpdatePrio(this->throttle_, this->prio_);
    }

    AuSPtr<TLSView> OSThread::GetTlsView()
    {
        if (!this->tls_)
        {
            this->tls_ = AuMakeShared<TLSViewImpl>();
        }

        return this->tls_;
    }

    bool OSThread::ExecuteNewOSContext(AuFunction<void()> task)
    {
        this->task_ = task;

        auto ret = SpawnThread([this]()
        {
            this->_ThreadEP();
        }, GetName(), this->info_.stackSize);
        
        if (ret.first)
        {
            this->handle_ = (decltype(handle_))ret.second;
        }

        return ret.first;
    }

    void OSThread::_ThreadEP()
    {
        // Poke TLS reference thread entity
        // TODO: we need an internal OSThread *TryPokeTLSThread()
        auto osThread = static_cast<OSThread *>(GetThread());
        this->tlsReferenceThread_ = osThread;

        OSAttach();
        try
        {
            task_();
        }
        catch (...)
        {
            SysPushErrorHAL("OS Thread Aborted");
        }
        Exit(true);
    }

    void OSThread::ExecuteInDeadThread(AuFunction<void()> callback)
    {
        auto old = HandleCurrent();

        if (this == old) [[unlikely]]
        {
            callback();
            return;
        }

        if (old)
        {
            static_cast<OSThread *>(old)->OSDeatach();
        }
        
        this->OSAttach();
        
        callback();

        if (old)
        {
            HandleRegister(old);
            static_cast<OSThread *>(old)->OSDeatach();
        }
        else [[unlikely]]
        {
            HandleRemove();
        }
    }

    void OSThread::UpdateName()
    {
    #if defined(AURORA_IS_MODERNNT_DERIVED)

        if (this->handle_ == INVALID_HANDLE_VALUE)
        {
            return;
        }

        if ((AuBuild::kCurrentPlatform == AuBuild::EPlatform::ePlatformWin32) && (!AuSwInfo::IsWindows10OrGreater()))
        {
            static const DWORD kMSVCExceptionSetName = 0x406D1388;

        #pragma pack(push,8)
            typedef struct tagTHREADNAME_INFO
            {
                DWORD dwType;
                LPCSTR szName;
                DWORD dwThreadID;
                DWORD dwFlags;
            } THREADNAME_INFO;
        #pragma pack(pop)

            if (!IsDebuggerPresent())
            {
                return;
            }

            THREADNAME_INFO info;
            info.dwType = 0x1000;
            info.szName = this->name_.c_str();
            info.dwThreadID = ::GetThreadId(this->handle_);
            info.dwFlags = 0;

            auto raise = AuStaticCast<void(__cdecl *)(THREADNAME_INFO &)>([](THREADNAME_INFO &info)
            {
                __try
                {
                    RaiseException(kMSVCExceptionSetName, 0, sizeof(info) / sizeof(ULONG_PTR), (ULONG_PTR *)&info);
                }
                __except (EXCEPTION_EXECUTE_HANDLER)
                {
                }
            });

            raise(info);
        }
        else
        {
            static HRESULT(WINAPI * SetThreadDescription_f)(HANDLE, PCWSTR);
            if (!SetThreadDescription_f)
            {
                SetThreadDescription_f = AuReinterpretCast<decltype(SetThreadDescription_f)>(GetProcAddress(GetModuleHandleW(L"Kernel32.dll"), "SetThreadDescription"));
            }

            if (SetThreadDescription_f)
            {
                SetThreadDescription_f(this->handle_, AuLocale::ConvertFromUTF8(this->name_).c_str());
            }
        }

    #elif defined(AURORA_HAS_PTHREADS)

        pthread_setname_np(this->handle_, this->name_.c_str());
    
    #endif
    }

    void OSThread::OSAttach()
    {
        HandleRegister(this);
    #if defined(AURORA_IS_LINUX_DERIVED)
        this->unixThreadId_ = gettid();
    #elif defined(AURORA_IS_XNU_DERIVED)
        this->unixThreadId_ = pthread_getthreadid_np();
    #elif defined(AURORA_IS_BSD_DERIVED)
        #if __FreeBSD_version < 900031
            long lwpid;
            thr_self(&lwpid);
            this->unixThreadId_ = lwpid;
        #elif __FreeBSD_version > 900030
            this->unixThreadId_ = pthread_getthreadid_np();
        #else
            static_assert(false);
        #endif
    #elif defined(AURORA_HAS_PTHREADS)
        this->unixThreadId_ = 0; // !!!!
    #endif

        UpdatePrio(this->throttle_, this->prio_);
        SetAffinity(this->mask_);
        UpdateName();
    }

    static AuHashMap<EThreadPriority, int> kNiceMap 
    {
        {
            EThreadPriority::ePrioRT, -19
        },
        {
            EThreadPriority::ePrioAboveHigh, -19
        },
        {
            EThreadPriority::ePrioHigh, -11
        },
        {
            EThreadPriority::ePrioNormal, -2
        },
        {
            EThreadPriority::ePrioLow, 5
        },
        {
            EThreadPriority::ePrioLowest, 15
        }
    };

#if defined(AURORA_IS_MODERNNT_DERIVED)
    static const AuHashMap<EThreadPriority, int> kWin32Map
    {
        {
            EThreadPriority::ePrioRT, THREAD_PRIORITY_TIME_CRITICAL
        },
        {
            EThreadPriority::ePrioAboveHigh, THREAD_PRIORITY_HIGHEST
        },
        {
            EThreadPriority::ePrioHigh, THREAD_PRIORITY_ABOVE_NORMAL
        },
        {
            EThreadPriority::ePrioNormal, THREAD_PRIORITY_NORMAL
        },
        {
            EThreadPriority::ePrioLow, THREAD_PRIORITY_BELOW_NORMAL
        },
        {
            EThreadPriority::ePrioLowest, THREAD_PRIORITY_LOWEST
        }
    };
#endif


#if defined(AURORA_IS_XNU_DERIVED)
    static const AuHashMap<AuPair<EThreadThrottle, EThreadPriority>, AuPair<AuUInt32, int>> kXnuQoSLevel
    {
        // Rt
        {
            AuMakePair(EThreadThrottle::eNormal, EThreadPriority::ePrioRT), AuMakePair(DISPATCH_QUEUE_PRIORITY_HIGH, 10)
        },
        {
            AuMakePair(EThreadThrottle::eNormal, EThreadPriority::ePrioAboveHigh), AuMakePair(DISPATCH_QUEUE_PRIORITY_DEFAULT, 5)
        },
        {
            AuMakePair(EThreadThrottle::eNormal, EThreadPriority::ePrioHigh), AuMakePair(DISPATCH_QUEUE_PRIORITY_DEFAULT, 1)
        },
        {
            AuMakePair(EThreadThrottle::eNormal, EThreadPriority::ePrioNormal), AuMakePair(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0)
        },
        {
            AuMakePair(EThreadThrottle::eNormal, EThreadPriority::ePrioLow), AuMakePair(DISPATCH_QUEUE_PRIORITY_LOW, 0)
        },
        {
            AuMakePair(EThreadThrottle::eNormal, EThreadPriority::ePrioLowest), AuMakePair(DISPATCH_QUEUE_PRIORITY_BACKGROUND, 0)
        },

        // Perf
        {
            AuMakePair(EThreadThrottle::ePerformance, EThreadPriority::ePrioRT), AuMakePair(DISPATCH_QUEUE_PRIORITY_HIGH, 10)
        },
        {
            AuMakePair(EThreadThrottle::ePerformance, EThreadPriority::ePrioAboveHigh), AuMakePair(DISPATCH_QUEUE_PRIORITY_HIGH, 8)
        },
        {
            AuMakePair(EThreadThrottle::ePerformance, EThreadPriority::ePrioHigh), AuMakePair(DISPATCH_QUEUE_PRIORITY_HIGH, 3)
        },
        {
            AuMakePair(EThreadThrottle::ePerformance, EThreadPriority::ePrioNormal), AuMakePair(DISPATCH_QUEUE_PRIORITY_HIGH, 0)
        },
        {
            AuMakePair(EThreadThrottle::ePerformance, EThreadPriority::ePrioLow), AuMakePair(DISPATCH_QUEUE_PRIORITY_DEFAULT, 1)
        },
        {
            AuMakePair(EThreadThrottle::ePerformance, EThreadPriority::ePrioLowest), AuMakePair(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0)
        },

        // Efficient
        {
            AuMakePair(EThreadThrottle::eEfficient, EThreadPriority::ePrioRT), AuMakePair(DISPATCH_QUEUE_PRIORITY_LOW, 10)
        },
        {
            AuMakePair(EThreadThrottle::eEfficient, EThreadPriority::ePrioAboveHigh), AuMakePair(DISPATCH_QUEUE_PRIORITY_LOW, 1)
        },
        {
            AuMakePair(EThreadThrottle::eEfficient, EThreadPriority::ePrioHigh), AuMakePair(DISPATCH_QUEUE_PRIORITY_LOW, 0)
        },
        {
            AuMakePair(EThreadThrottle::eEfficient, EThreadPriority::ePrioNormal), AuMakePair(DISPATCH_QUEUE_PRIORITY_BACKGROUND, 0)
        },
        {
            AuMakePair(EThreadThrottle::eEfficient, EThreadPriority::ePrioLow), AuMakePair(DISPATCH_QUEUE_PRIORITY_BACKGROUND, -1)
        },
        {
            AuMakePair(EThreadThrottle::eEfficient, EThreadPriority::ePrioLowest), AuMakePair(DISPATCH_QUEUE_PRIORITY_BACKGROUND, -2)
        }
    };
#endif

    void OSThread::UpdatePrio(EThreadThrottle throttle, EThreadPriority prio)
    {
    #if defined(AURORA_IS_MODERNNT_DERIVED)

        if (this->handle_ == INVALID_HANDLE_VALUE)
        {
            return;
        }

        const int *val;
        if (!AuTryFind(kWin32Map, prio, val))
        {
            return;
        }

        if (!SetThreadPriority(this->handle_, *val))
        {
            SysPushErrorHAL("Couldn't update thread priority");
        }

        THREAD_POWER_THROTTLING_STATE throttlingState {};
        throttlingState.Version = THREAD_POWER_THROTTLING_CURRENT_VERSION;

        switch (throttle)
        {
        case EThreadThrottle::eNormal:
            throttlingState.ControlMask = 0;
            throttlingState.StateMask = 0;
            break;
        case EThreadThrottle::ePerformance:
            throttlingState.ControlMask = THREAD_POWER_THROTTLING_EXECUTION_SPEED;
            throttlingState.StateMask = 0;
            break;
        case EThreadThrottle::eEfficient:
            throttlingState.ControlMask = THREAD_POWER_THROTTLING_EXECUTION_SPEED;
            throttlingState.StateMask = THREAD_POWER_THROTTLING_EXECUTION_SPEED;
            break;
        }

        SetThreadInformation(this->handle_,
                             ThreadPowerThrottling,
                             &throttlingState,
                             sizeof(throttlingState));

    //#elif defined(AURORA_IS_XNU_DERIVED)


    #elif defined(AURORA_HAS_PTHREADS)

        if (!this->handle_)
        {
            return;
        }

        if (prio == EThreadPriority::ePrioRT)
        {
            sched_param param {};
            param.sched_priority = sched_get_priority_min(SCHED_RR);

            if (pthread_setschedparam(this->handle_, SCHED_RR, &param) == 0)
            {
                return;
            }

            // fall through on error
        }
        else if (this->prio_ == EThreadPriority::ePrioRT)
        {
            int policyNonRT = 
            #if defined(AURORA_IS_XNU_DERIVED)
                SCHED_FIFO;
            #else
                SCHED_OTHER;
            #endif  

            sched_param param {};
            param.sched_priority = sched_get_priority_min(policyNonRT);
            pthread_setschedparam(this->handle_, policyNonRT, &param);
        }

        const int *val;
        if (!AuTryFind(kNiceMap, prio, val))
        {
            return;
        }

        if (auto tid = unixThreadId_)
        {
            // TODO: per thread beaviour is a linux bug
            setpriority(PRIO_PROCESS, tid, *val);
        }
    #endif

    #if defined(AURORA_IS_LINUX_DERIVED) || defined(AURORA_IS_BSD_DERIVED)
        switch (throttle)
        {
        case EThreadThrottle::eNormal:
            this->throttleMask_ = AuHwInfo::GetCPUInfo().maskAllCores;
            break;
        case EThreadThrottle::ePerformance:
            this->throttleMask_ = AuHwInfo::GetCPUInfo().maskPCores;
            break;
        case EThreadThrottle::eEfficient:
            this->throttleMask_ = AuHwInfo::GetCPUInfo().maskECores;
            break;
        }

        UpdateAffinity(this->mask_);
    #endif

        this->prio_ = prio;
    }

    void OSThread::UpdateAffinity(const HWInfo::CpuBitId &mask)
    {
    #if defined(AURORA_IS_MODERNNT_DERIVED)

        if (this->handle_ == INVALID_HANDLE_VALUE)
        {
            return;
        }

        if ((AuBuild::kCurrentPlatform != AuBuild::EPlatform::ePlatformWin32) || (AuSwInfo::IsWindows10OrGreater()))
        {
            static BOOL(WINAPI * SetThreadSelectedCpuSets_f)(HANDLE, const ULONG *, ULONG);
            if (!SetThreadSelectedCpuSets_f)
            {
                SetThreadSelectedCpuSets_f = AuReinterpretCast<decltype(SetThreadSelectedCpuSets_f)>(GetProcAddress(GetModuleHandleW(L"Kernel32.dll"), "SetThreadSelectedCpuSets"));
            }

            auto sets = mask.ToCpuSets();

            if (SetThreadSelectedCpuSets_f)
            {
                if (SetThreadSelectedCpuSets_f(this->handle_, sets.data(), sets.size()))
                {
                    return;
                }
                
                SysPushErrorUnavailableError("SetThreadSelectedCpuSets is expected on modern NT (CoreOS?) excluding Windows; or Win10+");
            }
        }

    #if defined(AURORA_PLATFORM_WIN32)
        GROUP_AFFINITY affinityGroup {0};
        mask.ToMsWin7GroupAffinity(&affinityGroup);
        if (SetThreadGroupAffinity(this->handle_, &affinityGroup, nullptr))
        {
            return;
        }
    #endif

        SysPushErrorUnavailableError("Couldn't set thread affinity");
        return;

    #elif defined(AURORA_HAS_PTHREADS)
        
        auto mask2 = mask.And(this->throttleMask_);

        if (mask2.CpuBitCount() == 0)
        {
            switch (this->throttle_)
            {
            case EThreadThrottle::eNormal:
                break;
            case EThreadThrottle::ePerformance:
                mask2 = AuHwInfo::GetCPUInfo().maskPCores;
                break;
            case EThreadThrottle::eEfficient:
                mask2 = AuHwInfo::GetCPUInfo().maskECores;
                break;
            }
        }

        cpu_set_t cpuset;
        CPU_ZERO(&cpuset);
        
        AuUInt8 index {};
        while (mask2.CpuBitScanForward(index, index))
        {
            CPU_SET(index, &cpuset);
            index++;
        }

        if (pthread_setaffinity_np(this->handle_, sizeof(cpuset), &cpuset) != 0)
        {
            SysPushErrorHAL("Couldn't set affinity mask");
        }

        return;

    #endif
    }

    void OSThread::OSDeatach()
    {

    }

    bool OSThread::InternalKill(bool locked)
    {
        if (this->terminated_)
        {
            if (!locked)
            {
                if (!this->exitOnlyOnce_->TryLock())
                {
                    return false;
                }
            }
        }

        HookOnExit();

        try
        {
            // dispatch kill callback
            if (this->info_.callbacks)
            {
                this->info_.callbacks->OnExit(this);
            }
        }
        catch (...)
        {
            Debug::PrintError();
            AuLogWarn("Couldn't deinitialize thread");
            AuLogWarn("The smart thing to do at this point would be to panic");
            AuLogWarn("...but we could continue");
            AuLogWarn("Carrying on despite the potential for data integrity loss and memory leaks");
            Telemetry::Mayday();
        }

        HookReleaseThreadResources();

        if (this->terminated_)
        {
            this->exitOnlyOnce_->Unlock();
            this->terminated_->Set();
      
        } 

        if (this->terminatedSignalLs_)
        {
            this->terminatedSignalLs_->Set();
        }

        return true;
    }

    void OSThread::TeminateOSContext(bool calledFromThis)
    {
    #if defined(AURORA_IS_MODERNNT_DERIVED)

        if (this->handle_ == INVALID_HANDLE_VALUE)
        {
            return;
        }

        if (calledFromThis)
        {
            ExitThread(0);
        }
        else
        {
            TerminateThread(this->handle_, 0);
        }

    #elif defined(AURORA_HAS_PTHREADS)

        pthread_kill(this->handle_, SIGTERM);

    #else
    
        SysPanic("Not implemented");
    
    #endif
    }

    void OSThread::FreeOSContext()
    {
    #if defined(AURORA_IS_MODERNNT_DERIVED)
        AuWin32CloseHandle(this->handle_);
    #endif
    }

    AuSPtr<Loop::ILoopSource> OSThread::AsLoopSource()
    {
        return this->terminateSignalLs_;
    }
        
    AuSPtr<IWaitable> OSThread::GetShutdownSignalWaitable()
    {
        return this->terminateSignal_;
    }

    AuSPtr<Loop::ILoopSource> OSThread::GetShutdownSignalLS()
    {
        return this->terminateSignalLs_;
    }

    void InitThreading()
    {
    #if defined(AURORA_PLATFORM_WIN32)
        AuxUlibInitialize();
    #endif
    }
}