diff --git a/Include/Aurora/IO/Loop/Loop.hpp b/Include/Aurora/IO/Loop/Loop.hpp
index d947f1ed..ea7a2ff9 100644
--- a/Include/Aurora/IO/Loop/Loop.hpp
+++ b/Include/Aurora/IO/Loop/Loop.hpp
@@ -27,9 +27,10 @@ namespace Aurora::IO::Loop
                                           bool bAny = { true },
                                           AuOptional<AuUInt32> optTimeoutMS = {});
 
-    static const AuUInt64 kWaitMultipleFlagAny       = 1 << 0;
-    static const AuUInt64 kWaitMultipleFlagNoSpin    = 1 << 1;
-    static const AuUInt64 kWaitMultipleFlagAvoidKern = 1 << 2;
+    static const AuUInt64 kWaitMultipleFlagAny           = 1 << 0;
+    static const AuUInt64 kWaitMultipleFlagNoSpin        = 1 << 1;
+    static const AuUInt64 kWaitMultipleFlagAvoidKern     = 1 << 2;
+    static const AuUInt64 kWaitMultipleFlagBreakAfterOne = 1 << 3;
 
     AUKN_SYM bool WaitMultipleLoopSourcesEx(const AuList<AuSPtr<Loop::ILoopSource>> &lsList,
                                             AuList<AuSPtr<Loop::ILoopSource>> &signaled,
diff --git a/Source/IO/Loop/LSIOHandle.hpp b/Source/IO/Loop/LSIOHandle.hpp
index bcc98de1..ae839ed1 100644
--- a/Source/IO/Loop/LSIOHandle.hpp
+++ b/Source/IO/Loop/LSIOHandle.hpp
@@ -27,7 +27,7 @@ namespace Aurora::IO::Loop
     #endif
         virtual ELoopSource    GetType() override;
 
-    protected:
+    //protected:
         AuSPtr<IIOHandle> pHandle;
     };
 }
\ No newline at end of file
diff --git a/Source/IO/Loop/Loop.NT.cpp b/Source/IO/Loop/Loop.NT.cpp
index a1feede4..469a76b9 100644
--- a/Source/IO/Loop/Loop.NT.cpp
+++ b/Source/IO/Loop/Loop.NT.cpp
@@ -12,7 +12,7 @@
 
 namespace Aurora::IO::Loop
 {
-    AuList<AuSPtr<ILoopSource>> WaitMultipleOrObjects(const AuList<AuSPtr<ILoopSource>> &objects, bool bZeroTick, AuUInt32 dwTimeoutReq, bool &bTooMany)
+    AuList<AuSPtr<ILoopSource>> WaitMultipleOrObjects(const AuList<AuSPtr<ILoopSource>> &objects, bool bZeroTick, AuUInt32 dwTimeoutReq, bool bAllowOthers, bool &bTooMany)
     {
         bool isWinLoop;
         AuList<AuSPtr<ILoopSourceEx>> loopSourceExs;
@@ -108,6 +108,17 @@ namespace Aurora::IO::Loop
             }
         }
 
+        if (isPump)
+        {
+            // msg loop queue for trigger 
+            AuTryInsert(triggered, msgSource);
+
+            if (!bAllowOthers)
+            {
+                error = true;
+            }
+        }
+
         for (const auto &source : loopSourceExs)
         {
             if (!error)
@@ -119,7 +130,7 @@ namespace Aurora::IO::Loop
                 for (const auto &handle : source->GetHandles())
                 {
                     if ((firstTriggered == handle) ||
-                        (WaitForSingleObject(reinterpret_cast<HANDLE>(handle), 0) == WAIT_OBJECT_0))
+                        (bAllowOthers && WaitForSingleObject(reinterpret_cast<HANDLE>(handle), 0) == WAIT_OBJECT_0))
                     {
                         lastHandle = handle;
                         wasTriggered = true;
@@ -138,12 +149,6 @@ namespace Aurora::IO::Loop
             source->OnFinishSleep();
         }
 
-        if (isPump)
-        {
-            // msg loop queue for trigger 
-            AuTryInsert(triggered, msgSource);
-        }
-
         return triggered;
     }
 }
\ No newline at end of file
diff --git a/Source/IO/Loop/Loop.cpp b/Source/IO/Loop/Loop.cpp
index ba371ad4..a199602f 100644
--- a/Source/IO/Loop/Loop.cpp
+++ b/Source/IO/Loop/Loop.cpp
@@ -8,6 +8,7 @@
 #include <Source/RuntimeInternal.hpp>
 #include "Loop.hpp"
 #include "ILoopSourceEx.hpp"
+#include "LSIOHandle.hpp"
 #include <Source/Threading/Primitives/SMTYield.hpp>
 
 namespace Aurora::IO::Loop
@@ -53,9 +54,9 @@ namespace Aurora::IO::Loop
     }
 
 #if defined(AURORA_IS_MODERNNT_DERIVED)
-    AuList<AuSPtr<ILoopSource>> WaitMultipleOrObjects(const AuList<AuSPtr<ILoopSource>> &objects, bool bZeroTick, AuUInt32 timeout, bool &bTooMany);
+    AuList<AuSPtr<ILoopSource>> WaitMultipleOrObjects(const AuList<AuSPtr<ILoopSource>> &objects, bool bZeroTick, AuUInt32 timeout, bool bAllowOthers, bool &bTooMany);
 #endif
-    AuList<AuSPtr<ILoopSource>> WaitMultipleOrObjectsFallback(const AuList<AuSPtr<ILoopSource>> &objects, AuUInt32 timeout, bool bZeroTick, bool &bTimeout);
+    AuList<AuSPtr<ILoopSource>> WaitMultipleOrObjectsFallback(const AuList<AuSPtr<ILoopSource>> &objects, AuUInt32 timeout, bool bZeroTick, bool bAllowOthers, bool &bTimeout);
 
     void ResetLoopSourceFalseAlarm(const AuSPtr<Loop::ILoopSource> &pLoopSource)
     {
@@ -292,6 +293,12 @@ namespace Aurora::IO::Loop
                      itr != lsList2.end();
                      )
                 {
+                    if (signalTemp.size() &&
+                        uFlags & kWaitMultipleFlagBreakAfterOne)
+                    {
+                        break;
+                    }
+
                     auto pSource = *itr;
                     if (!pSource)
                     {
@@ -342,8 +349,13 @@ namespace Aurora::IO::Loop
                 AuThreadPrimitives::DoTryIf([&]()
                 {
                     DoTheThing(false);
-                    return lsList2.size() != lsList.size() || 
-                        !bAnyFound;
+
+                    if (!bAnyFound)
+                    {
+                        return true;
+                    }
+
+                    return bool(signalTemp.size());
                 });
 
                 if (bAnyFound)
@@ -356,7 +368,10 @@ namespace Aurora::IO::Loop
                 DoTheThing(true);
             }
 
-            if (lsList2.size())
+            bool bAllowOthers = !(uFlags & kWaitMultipleFlagBreakAfterOne);
+
+            if (lsList2.size() &&
+                (bAllowOthers || signalTemp.empty()))
             {
                 bZeroTick |= bool(signalTemp.size());
                 AuUInt32 uTimeoutMS {};
@@ -381,7 +396,7 @@ namespace Aurora::IO::Loop
                 if (AuBuild::kCurrentVendor == AuBuild::EVendor::eGenericMicrosoft &&
                     lsList2.size() < MAXIMUM_WAIT_OBJECTS)
                 {
-                    signaled = WaitMultipleOrObjects(lsList2, bZeroTick, uTimeoutMS, bTooMany);
+                    signaled = WaitMultipleOrObjects(lsList2, bZeroTick, uTimeoutMS, bAllowOthers, bTooMany);
                     bTimedout = uTimeoutEnd && uTimeoutMS && !bZeroTick ?
                         Time::SteadyClockNS() >= uTimeoutEnd :
                         false;
@@ -394,7 +409,7 @@ namespace Aurora::IO::Loop
 
                 if (bTooMany)
                 {
-                    signaled = WaitMultipleOrObjectsFallback(lsList2, uTimeoutMS, bZeroTick, bTimedout);
+                    signaled = WaitMultipleOrObjectsFallback(lsList2, uTimeoutMS, bZeroTick, bAllowOthers, bTimedout);
                     bTimedout &= !bZeroTick;
                 }
             }
@@ -412,7 +427,7 @@ namespace Aurora::IO::Loop
         }
     }
 
-    AuList<AuSPtr<ILoopSource>> WaitMultipleOrObjectsFallback(const AuList<AuSPtr<ILoopSource>> &objects, AuUInt32 timeout, bool bZeroTick, bool &bTimeout)
+    AuList<AuSPtr<ILoopSource>> WaitMultipleOrObjectsFallback(const AuList<AuSPtr<ILoopSource>> &objects, AuUInt32 timeout, bool bZeroTick, bool bAllowOthers, bool &bTimeout)
     {
         AuList<AuSPtr<ILoopSourceEx>> loopSourceExs;
         AuList<AuSPtr<ILoopSource>> triggered;
@@ -468,7 +483,6 @@ namespace Aurora::IO::Loop
 
         auto pListener = AuMakeSharedThrow<AuLoop::ILoopSourceSubscriberFunctional>([&](const AuSPtr<ILoopSource> &source)
         {
-            AU_DEBUG_MEMCRUNCH;
             triggered.push_back(source);
             return false;
         });
@@ -495,19 +509,21 @@ namespace Aurora::IO::Loop
         for (AU_ITERATE_N(i, loopSourceExs.size()))
         {
             auto pLoopSource = loopSourceExs[i];
-         
-            if (std::find(triggered.begin(), triggered.end(), pLoopSource) == triggered.end())
-            {
-                auto eType = pLoopSource->GetType();
 
-                if (!bTimeout ||
-                    eType == ELoopSource::eSourceFastMutex ||
-                    eType == ELoopSource::eSourceFastSemaphore ||
-                    eType == ELoopSource::eSourceFastEvent)
+            if (bAllowOthers || triggered.empty())
+            {
+                if (std::find(triggered.begin(), triggered.end(), pLoopSource) == triggered.end())
                 {
-                    if (pLoopSource->IsSignaledNoSpinIfUserland())
+                    auto eType = pLoopSource->GetType();
+
+                    if (eType == ELoopSource::eSourceFastMutex ||
+                        eType == ELoopSource::eSourceFastSemaphore ||
+                        eType == ELoopSource::eSourceFastEvent)
                     {
-                        triggered.push_back(pLoopSource);
+                        if (pLoopSource->IsSignaledNoSpinIfUserland())
+                        {
+                            triggered.push_back(pLoopSource);
+                        }
                     }
                 }
             }
@@ -515,7 +531,19 @@ namespace Aurora::IO::Loop
             pLoopSource->OnFinishSleep();
         }
 
-        return triggered;
+        if (!bAllowOthers && triggered.size() > 1)
+        {
+            for (AU_ITERATE_N_TO_X(i, 1, triggered.size()))
+            {
+                ResetLoopSourceFalseAlarm(triggered[i]);
+            }
+
+            return { triggered[0] };
+        }
+        else
+        {
+            return triggered;
+        }
     }
 
     AUKN_SYM AuInt64                DbgLoopSourceToReadFd(AuSPtr<ILoopSource> pLoopSource)
@@ -546,6 +574,14 @@ namespace Aurora::IO::Loop
             return -1;
         }
 
+        if (auto pIOHandle = AuDynamicCast<Loop::LSIOHandle>(pLoopSource))
+        {
+            return pIOHandle->pHandle->GetOSWriteHandleSafe().OrElse([&]()
+            {
+                return pIOHandle->pHandle->GetOSReadHandleSafe();
+            }).ValueOr(AuUInt(-1));
+        }
+
         auto pSourceEx = AuDynamicCast<Loop::ILoopSourceEx>(pLoopSource);
         if (!pSourceEx)
         {