Use NonCapturingTimer

Author: pranavkm

Diff for: build/dependencies.props

@@ -10,6 +10,7 @@
     <MicrosoftBuildTasksCorePackageVersion>15.6.82</MicrosoftBuildTasksCorePackageVersion>
     <MicrosoftBuildUtilitiesCorePackageVersion>15.6.82</MicrosoftBuildUtilitiesCorePackageVersion>
     <MicrosoftExtensionsHashCodeCombinerSourcesPackageVersion>2.2.0-preview3-35252</MicrosoftExtensionsHashCodeCombinerSourcesPackageVersion>
+    <MicrosoftExtensionsNonCapturingTimerSourcesPackageVersion>2.2.0-preview3-35252</MicrosoftExtensionsNonCapturingTimerSourcesPackageVersion>
     <MicrosoftExtensionsPrimitivesPackageVersion>2.2.0-preview3-35252</MicrosoftExtensionsPrimitivesPackageVersion>
     <MicrosoftNETCoreApp20PackageVersion>2.0.9</MicrosoftNETCoreApp20PackageVersion>
     <MicrosoftNETCoreApp21PackageVersion>2.1.3</MicrosoftNETCoreApp21PackageVersion>

Diff for: src/FS.Physical/FS.Physical.csproj

@@ -17,4 +17,8 @@
     <ProjectReference Include="..\FS.Globbing\FS.Globbing.csproj" />
   </ItemGroup>
 
+  <ItemGroup>
+    <PackageReference Include="Microsoft.Extensions.NonCapturingTimer.Sources" Version="$(MicrosoftExtensionsNonCapturingTimerSourcesPackageVersion)" PrivateAssets="All" />
+  </ItemGroup>
+
 </Project>

Diff for: src/FS.Physical/PhysicalFilesWatcher.cs

@@ -9,6 +9,7 @@
 using System.Threading.Tasks;
 using Microsoft.Extensions.FileProviders.Physical.Internal;
 using Microsoft.Extensions.FileSystemGlobbing;
+using Microsoft.Extensions.Internal;
 using Microsoft.Extensions.Primitives;
 
 namespace Microsoft.Extensions.FileProviders.Physical
@@ -90,7 +91,7 @@ public PhysicalFilesWatcher(
             _filters = filters;
 
             PollingChangeTokens = new ConcurrentDictionary<IPollingChangeToken, IPollingChangeToken>();
-            _timerFactory = () => new Timer(RaiseChangeEvents, state: PollingChangeTokens, dueTime: TimeSpan.Zero, period: DefaultPollingInterval);
+            _timerFactory = () => NonCapturingTimer.Create(RaiseChangeEvents, state: PollingChangeTokens, dueTime: TimeSpan.Zero, period: DefaultPollingInterval);
         }
 
         internal bool PollForChanges { get; }