[wasm-mt] Allow JSImport promises to run on managed threadpool worker threads

eng/Version.Details.xml

@@ -1,8 +1,8 @@
 <Dependencies>
   <ProductDependencies>
-    <Dependency Name="Microsoft.NETCore.Runtime.ICU.Transport" Version="8.0.0-preview.3.23163.3">
+    <Dependency Name="Microsoft.NETCore.Runtime.ICU.Transport" Version="8.0.0-preview.4.23177.3">
       <Uri>https://github.com/dotnet/icu</Uri>
-      <Sha>b3cb54fec4eb845b37038c934d6c9dc17cdfb181</Sha>
+      <Sha>389d19d09d3cf16ec0143dba065fcd704ab8e48c</Sha>
     </Dependency>
     <Dependency Name="System.Net.MsQuic.Transport" Version="8.0.0-alpha.1.23166.1">
       <Uri>https://github.com/dotnet/msquic</Uri>
@@ -85,9 +85,9 @@
       <Sha>f32e148d67dbf348685c3076a37e8bc68ab3a30f</Sha>
       <SourceBuild RepoName="cecil" ManagedOnly="true" />
     </Dependency>
-    <Dependency Name="Microsoft.NET.Workload.Emscripten.Current.Manifest-8.0.100.Transport" Version="8.0.0-preview.4.23170.1">
+    <Dependency Name="Microsoft.NET.Workload.Emscripten.Current.Manifest-8.0.100.Transport" Version="8.0.0-preview.4.23177.1">
       <Uri>https://github.com/dotnet/emsdk</Uri>
-      <Sha>a464820353b7956538b07c9b53103d793b5e15b6</Sha>
+      <Sha>e4089ed2abe29bdc25bab2c261940175d0846824</Sha>
       <SourceBuild RepoName="emsdk" ManagedOnly="true" />
     </Dependency>
   </ProductDependencies>

eng/Versions.props

@@ -216,7 +216,7 @@
     <!-- Mono Cecil -->
     <MicrosoftDotNetCecilVersion>0.11.4-alpha.23163.1</MicrosoftDotNetCecilVersion>
     <!-- ICU -->
-    <MicrosoftNETCoreRuntimeICUTransportVersion>8.0.0-preview.3.23163.3</MicrosoftNETCoreRuntimeICUTransportVersion>
+    <MicrosoftNETCoreRuntimeICUTransportVersion>8.0.0-preview.4.23177.3</MicrosoftNETCoreRuntimeICUTransportVersion>
     <!-- MsQuic -->
     <MicrosoftNativeQuicMsQuicVersion>2.1.7</MicrosoftNativeQuicMsQuicVersion>
     <SystemNetMsQuicTransportVersion>8.0.0-alpha.1.23166.1</SystemNetMsQuicTransportVersion>
@@ -235,7 +235,7 @@
          Note: when the name is updated, make sure to update dependency name in eng/pipelines/common/xplat-setup.yml
                like - DarcDependenciesChanged.Microsoft_NET_Workload_Emscripten_Current_Manifest-8_0_100_Transport
     -->
-    <MicrosoftNETWorkloadEmscriptenCurrentManifest80100TransportVersion>8.0.0-preview.4.23170.1</MicrosoftNETWorkloadEmscriptenCurrentManifest80100TransportVersion>
+    <MicrosoftNETWorkloadEmscriptenCurrentManifest80100TransportVersion>8.0.0-preview.4.23177.1</MicrosoftNETWorkloadEmscriptenCurrentManifest80100TransportVersion>
     <MicrosoftNETRuntimeEmscriptenVersion>$(MicrosoftNETWorkloadEmscriptenCurrentManifest80100TransportVersion)</MicrosoftNETRuntimeEmscriptenVersion>
     <!-- workloads -->
     <SwixPackageVersion>1.1.87-gba258badda</SwixPackageVersion>

eng/pipelines/common/templates/pipeline-with-resources.yml

@@ -60,10 +60,10 @@ resources:
         ROOTFS_DIR: /crossrootfs/ppc64le
 
     - container: browser_wasm
-      image: mcr.microsoft.com/dotnet-buildtools/prereqs:ubuntu-18.04-webassembly-net8-20230322221728-80fdceb
+      image: mcr.microsoft.com/dotnet-buildtools/prereqs:ubuntu-18.04-webassembly-net8-20230327150025-4404b5c
 
     - container: wasi_wasm
-      image: mcr.microsoft.com/dotnet-buildtools/prereqs:ubuntu-20.04-webassembly-net8-20230322221804-80fdceb
+      image: mcr.microsoft.com/dotnet-buildtools/prereqs:ubuntu-20.04-webassembly-net8-20230327150037-4404b5c
 
     - container: freebsd_x64
       image: mcr.microsoft.com/dotnet-buildtools/prereqs:ubuntu-18.04-cross-freebsd-12

eng/pipelines/libraries/helix-queues-setup.yml

@@ -201,6 +201,6 @@ jobs:
 
     # Browser WebAssembly windows
     - ${{ if in(parameters.platform, 'browser_wasm_win', 'wasi_wasm_win') }}:
-      - (Windows.Amd64.Server2022.Open)windows.amd64.server2022.open@mcr.microsoft.com/dotnet-buildtools/prereqs:windowsservercore-ltsc2022-helix-webassembly-net8-20230319084205-80fdceb
+      - (Windows.Amd64.Server2022.Open)windows.amd64.server2022.open@mcr.microsoft.com/dotnet-buildtools/prereqs:windowsservercore-ltsc2022-helix-webassembly-net8-20230327150108-4404b5c
 
     ${{ insert }}: ${{ parameters.jobParameters }}

src/libraries/System.Private.CoreLib/src/System.Private.CoreLib.Shared.projitems

@@ -2523,8 +2523,9 @@
     <Compile Include="$(MSBuildThisFileDirectory)System\Threading\PortableThreadPool.ThreadCounts.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)System\Threading\PortableThreadPool.WaitThread.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)System\Threading\PortableThreadPool.WorkerThread.cs" />
+    <Compile Include="$(MSBuildThisFileDirectory)System\Threading\PortableThreadPool.WorkerThread.NonBrowser.cs" Condition="'$(TargetsBrowser)' != 'true'"/>
     <Compile Include="$(MSBuildThisFileDirectory)System\Threading\PortableThreadPool.WorkerTracking.cs" />
-    <Compile Include="$(MSBuildThisFileDirectory)System\Threading\PortableThreadPool.Unix.cs" Condition="'$(TargetsUnix)' == 'true' or '$(TargetsBrowser)' == 'true' or '$(TargetsWasi)' == 'true'" />
+    <Compile Include="$(MSBuildThisFileDirectory)System\Threading\PortableThreadPool.Unix.cs" Condition="'$(TargetsUnix)' == 'true' or ('$(TargetsBrowser)' == 'true' and '$(FeatureWasmThreads)' != 'true') or '$(TargetsWasi)' == 'true'" />
     <Compile Include="$(MSBuildThisFileDirectory)System\Threading\PortableThreadPool.Windows.cs" Condition="'$(TargetsWindows)' == 'true'" />
     <Compile Include="$(MSBuildThisFileDirectory)System\Threading\LowLevelLifoSemaphore.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)System\Threading\LowLevelLifoSemaphore.Windows.cs" Condition="'$(TargetsWindows)' == 'true'" />

src/libraries/System.Private.CoreLib/src/System/Threading/LowLevelLifoSemaphore.cs

@@ -39,6 +39,9 @@ public LowLevelLifoSemaphore(int initialSignalCount, int maximumSignalCount, int
 
         public bool Wait(int timeoutMs, bool spinWait)
         {
+#if TARGET_BROWSER && FEATURE_WASM_THREADS
+            ThrowIfInvalidSemaphoreKind(LifoSemaphoreKind.Normal);
+#endif
             Debug.Assert(timeoutMs >= -1);
 
             int spinCount = spinWait ? _spinCount : 0;

src/libraries/System.Private.CoreLib/src/System/Threading/PortableThreadPool.WorkerThread.NonBrowser.cs

@@ -0,0 +1,81 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+
+using System.Diagnostics.Tracing;
+
+namespace System.Threading
+{
+    internal sealed partial class PortableThreadPool
+    {
+        /// <summary>
+        /// The worker thread infastructure for the CLR thread pool.
+        /// </summary>
+        private static partial class WorkerThread
+        {
+
+            /// <summary>
+            /// Semaphore for controlling how many threads are currently working.
+            /// </summary>
+            private static readonly LowLevelLifoSemaphore s_semaphore =
+                new LowLevelLifoSemaphore(
+                    0,
+                    MaxPossibleThreadCount,
+                    AppContextConfigHelper.GetInt32Config(
+                        "System.Threading.ThreadPool.UnfairSemaphoreSpinLimit",
+                        SemaphoreSpinCountDefault,
+                        false),
+                    onWait: () =>
+                    {
+                        if (NativeRuntimeEventSource.Log.IsEnabled())
+                        {
+                            NativeRuntimeEventSource.Log.ThreadPoolWorkerThreadWait(
+                                (uint)ThreadPoolInstance._separated.counts.VolatileRead().NumExistingThreads);
+                        }
+                    });
+
+            private static readonly ThreadStart s_workerThreadStart = WorkerThreadStart;
+
+            private static void WorkerThreadStart()
+            {
+                Thread.CurrentThread.SetThreadPoolWorkerThreadName();
+
+                PortableThreadPool threadPoolInstance = ThreadPoolInstance;
+
+                if (NativeRuntimeEventSource.Log.IsEnabled())
+                {
+                    NativeRuntimeEventSource.Log.ThreadPoolWorkerThreadStart(
+                        (uint)threadPoolInstance._separated.counts.VolatileRead().NumExistingThreads);
+                }
+
+                LowLevelLock threadAdjustmentLock = threadPoolInstance._threadAdjustmentLock;
+                LowLevelLifoSemaphore semaphore = s_semaphore;
+
+                while (true)
+                {
+                    bool spinWait = true;
+                    while (semaphore.Wait(ThreadPoolThreadTimeoutMs, spinWait))
+                    {
+                            WorkerDoWork(threadPoolInstance, ref spinWait);
+                    }
+
+                    if (WorkerTimedOutMaybeStop(threadPoolInstance, threadAdjustmentLock))
+                    {
+                            break;
+                    }
+                }
+            }
+
+
+            private static void CreateWorkerThread()
+            {
+                // Thread pool threads must start in the default execution context without transferring the context, so
+                // using UnsafeStart() instead of Start()
+                Thread workerThread = new Thread(s_workerThreadStart);
+                workerThread.IsThreadPoolThread = true;
+                workerThread.IsBackground = true;
+                // thread name will be set in thread proc
+                workerThread.UnsafeStart();
+            }
+        }
+    }
+}