[+] AuThreading::WaitForMultipleAddressesOrWithIO (Mixed userspace monitors with IO primitives)

[+] AuThreading::WaitMultipleIOTrigger
[+] AuThreading::WaitMulipleContainer

Include/Aurora/Threading/WakeOnAddress.hpp

@@ -95,6 +95,11 @@
 ***/
 #pragma once
 
+namespace Aurora::IO::Loop
+{
+    struct ILoopSource;
+}
+
 namespace Aurora::Threading
 {
     // Specifies to break a thread context yield when volatile pTargetAddress [... EWaitMethod operation ...] constant pCompareAddress
@@ -102,6 +107,7 @@ namespace Aurora::Threading
         eNotEqual, eEqual, eLessThanCompare, eGreaterThanCompare, eLessThanOrEqualsCompare, eGreaterThanOrEqualsCompare, eAnd, eNotAnd
     ))
         
+    // User-provided wait head for allocation-less wait on multiple addresses
     struct AU_ALIGN(sizeof(void *)) WaitMultipleEntry
     {
         AuUInt8                       internalContext[128];
@@ -129,6 +135,7 @@ namespace Aurora::Threading
         bool                          bIgnoreCurrentFlag {};
     };
 
+    // User-provided container of WaitMultipleEntry for allocation-less wait on multiple addresses
     struct WaitMulipleContainer
     {
         // Assign this to a virtually contiguous array of WaitMultipleEntry entries.
@@ -139,6 +146,29 @@ namespace Aurora::Threading
         AuUInt64                      qwNanoseconds {};
     };
 
+    // User-provided node for additional AuLoop-based IO objects to use in an alternative non-futex/non-keyedevent/non-waitonaddress path. 
+    struct WaitMultipleIOTrigger
+    {
+        AuSPtr<IO::Loop::ILoopSource> pLoopSource;
+        bool                          bIgnoreCurrentFlag      {};
+        AuUInt16                      uHasStateChangedCounter {};
+    };
+
+    // User-provided container of WaitMultipleIOTrigger entries.
+    struct WaitMulipleContainerWithIO :
+        WaitMulipleContainer
+    {
+        // array of WaitMultipleIOTrigger
+        AuMemoryViewWrite             lsArray;
+
+        // Break after one trigger?
+        bool                          bWaitOnlyOne {};
+
+        // Optional output parameter: index to the first triggered IO object  
+        AuUInt32 *                    pTriggeredIndex {};
+    };
+
+
     AUKN_SYM void WakeAllOnAddress(const void *pTargetAddress);
 
     AUKN_SYM void WakeOnAddress(const void *pTargetAddress);
@@ -225,6 +255,9 @@ namespace Aurora::Threading
     AUKN_SYM bool WaitForMultipleAddressesAnd(const WaitMulipleContainer &waitMultipleOnAddress);
     
 
+    // Mixed IO (FD/Handle/similar) with user-space waitlists. Functionality is a superset of WaitForMultipleAddressesOr
+    AUKN_SYM bool WaitForMultipleAddressesOrWithIO(const WaitMulipleContainerWithIO &waitMultipleOnAddress);
+
     // C++ doesn't allow for implicit casting between nonvolatile and volatile pointers.
     // The following stubs unify the above APIs for non-volatile marked atomic containers.
     // Whether the underlying data of "pTargetAddress" is thread-locally-volatile or not is upto the chosen compiler intrin used to load/store and/or whether you upcast to volatile later on.

Source/Threading/AuWakeOnAddress.cpp

@@ -417,6 +417,12 @@ namespace Aurora::Threading
                     return true;
                 }
             }
+
+            if (this->bSemaphoreActive &&
+                this->pSemaphore)
+            {
+                this->pSemaphore->AddOne();
+            }
         }
         else if (this->pCompareAddress)
         {
@@ -2135,4 +2141,202 @@ namespace Aurora::Threading
 
         return bStatus;
     }
+
+    AUKN_SYM bool WaitForMultipleAddressesOrWithIO(const WaitMulipleContainerWithIO &waitMultipleOnAddress)
+    {
+        AuLoop::WaitForMultipleLoopSourcesParameters       parameters;
+        AuList<AuSPtr<AuLoop::ILoopSource>>                loopSourceVec;
+        AuList<AuLoop::WaitForMultipleLoopSourcesInOutOpt> outVec;
+        bool bResult {}, bAny {}, bSleepStatus {};
+        AuUInt32 uTicks {};
+        WaitEntry *pWaitEntryMain {}, *pWaitEntryAux {};
+
+        SysAssertDbg(!IsWaitOnRecommended(), "WoA not in emulation mode");
+        
+        auto uCountOfIO = waitMultipleOnAddress.lsArray.Count<WaitMultipleIOTrigger>();
+        auto pBaseOfIO  = waitMultipleOnAddress.lsArray.Begin<WaitMultipleIOTrigger>();
+
+        if (waitMultipleOnAddress.pTriggeredIndex)
+        {
+            *waitMultipleOnAddress.pTriggeredIndex = AuUInt32(-1);
+        }
+
+        if (!AuTryResize(loopSourceVec, uCountOfIO + 1))
+        {
+            SysPushErrorMemory();
+            return false;
+        }
+
+        if (!AuTryResize(outVec, uCountOfIO + 1))
+        {
+            SysPushErrorMemory();
+            return false;
+        }
+        
+        for (AU_ITERATE_N(i, uCountOfIO))
+        {
+            loopSourceVec[i + 1]        = pBaseOfIO[i].pLoopSource;
+            outVec       [i + 1].bSkip  = pBaseOfIO[i].bIgnoreCurrentFlag;
+        }
+
+        auto uCount = waitMultipleOnAddress.waitArray.Count<WaitMultipleEntry>();
+        auto pBase  = waitMultipleOnAddress.waitArray.Begin<WaitMultipleEntry>();
+
+    #if defined(HACK_NO_INVALID_ACCESS_LEAK_SHARED_REF_ON_DESTROYED_THREAD)
+        auto pTempHoldMe = tlsWaitEntry;
+        auto pHead       = pTempHoldMe.get();
+    #else
+        auto pHead       = &tlsWaitEntry;
+    #endif
+
+        if (!pHead->pSemaphore)
+        {
+            pHead->pSemaphore = AuLoop::NewLSSemaphoreSlow(0u);
+        }
+
+        pHead->bSemaphoreActive    = true;
+
+        loopSourceVec[0]           = pHead->pSemaphore;
+        outVec       [0].bSkip     = false;
+
+        parameters.bIsVectorShared = true;
+        parameters.uFlags          = AuLoop::kWaitMultipleFlagAny;
+
+        if (waitMultipleOnAddress.bWaitOnlyOne)
+        {
+            parameters.uFlags      |= AuLoop::kWaitMultipleFlagBreakAfterOne;
+        }
+
+        parameters.vecArray  = loopSourceVec;
+        parameters.vecArray2 = outVec;
+
+        do
+        {
+            for (AU_ITERATE_N(i, uCount))
+            {
+                auto &current = pBase[i];
+                auto pCurrent = AuReinterpretCast<MultipleInternalContext>(pBase[i].internalContext);
+                auto &state   = pCurrent->state;
+
+                if (current.bIgnoreCurrentFlag)
+                {
+                    continue;
+                }
+
+                pCurrent->pBefore     = nullptr;
+                pCurrent->pNext       = nullptr;
+                pCurrent->uMinTrigger = 0;
+                pCurrent->uCounter = 0;
+
+                pWaitEntryAux = gProcessWaitables.WaitBufferFrom2(current.pTargetAddress, current.uSize, current.pCompareAddress, current.eMethod, pCurrent, &waitMultipleOnAddress);
+                if (!pWaitEntryAux)
+                {
+                    break;
+                }
+                else
+                {
+                    pWaitEntryMain = pWaitEntryAux;
+                }
+
+                state.qwNanosecondsAbs = waitMultipleOnAddress.qwNanoseconds;
+                bAny = true;
+            }
+
+            if (!bAny && !uCountOfIO)
+            {
+                return true;
+            }
+
+            if (!pWaitEntryAux)
+            {
+                bSleepStatus = false;
+            }
+            else if (!AuAtomicLoad(&pWaitEntryAux->bAlive))
+            {
+                bSleepStatus = false;
+            }
+            else
+            {
+                auto uNow = AuTime::SteadyClockNS();
+                bool bTimeOutEarly {};
+
+                if (!waitMultipleOnAddress.qwNanoseconds)
+                {
+                    parameters.optTimeoutMS = {};
+                }
+                else if (uNow >= waitMultipleOnAddress.qwNanoseconds)
+                {
+                    if (uTicks)
+                    {
+                        bTimeOutEarly = true;
+                    }
+                    else
+                    {
+                        parameters.optTimeoutMS = 0;
+                    }
+                }
+                else
+                {
+                    parameters.optTimeoutMS = AuNSToMS<AuUInt32>(waitMultipleOnAddress.qwNanoseconds - uNow);
+                }
+
+                if (bTimeOutEarly)
+                {
+                    bSleepStatus = false;
+                }
+                else
+                {
+                    bSleepStatus = AuLoop::WaitMultipleLoopSources2(parameters);
+                }
+            }
+
+            for (AU_ITERATE_N(i, uCount))
+            {
+                auto &current = pBase[i];
+                auto pCurrent = AuReinterpretCast<MultipleInternalContext>(pBase[i].internalContext);
+                auto &state   = pCurrent->state;
+
+                if (current.bIgnoreCurrentFlag)
+                {
+                    continue;
+                }
+
+                if (!WaitBuffer::Compare(current.pTargetAddress, current.uSize, current.pCompareAddress, kMax64, current.eMethod))
+                {
+                    current.uHasStateChangedCounter++;
+                    bResult = true;
+                }
+
+                gProcessWaitables.RemoveSelf(current.pTargetAddress, pWaitEntryMain);
+            }
+
+            for (AU_ITERATE_N(i, uCountOfIO))
+            {
+                auto &refTriggered = outVec[i + 1].uTriggered;
+
+                if (refTriggered)
+                {
+                    pBaseOfIO[i].uHasStateChangedCounter += refTriggered;
+                    refTriggered = 0;
+                    bResult = true;
+
+                    if (waitMultipleOnAddress.pTriggeredIndex)
+                    {
+                        *waitMultipleOnAddress.pTriggeredIndex = i;
+                    }
+                }
+            }
+
+            uTicks++;
+        }
+        while (!bResult && (!waitMultipleOnAddress.qwNanoseconds || bSleepStatus));
+
+        pHead->bSemaphoreActive    = false;
+
+    #if defined(HACK_NO_INVALID_ACCESS_LEAK_SHARED_REF_ON_DESTROYED_THREAD)
+        pTempHoldMe.reset();
+    #endif
+
+        return bResult;
+    }
 }

Source/Threading/AuWakeOnAddress.hpp

@@ -132,6 +132,9 @@ namespace Aurora::Threading
         auline WaitEntry *GetBefore(const void *pAddress);
         auline WaitEntry *GetSimilarFirstItr(const void *pAddress);
         auline void       SetBefore(const void *pAddress, WaitEntry *pNext);
+
+        AuSPtr<AuLoop::ILSSemaphore> pSemaphore;
+        volatile bool                bSemaphoreActive {};
     };
 
     struct ProcessListWait