Add New Test to Track Number of Jitted Methods

src/coreclr/vm/jitinterface.cpp

@@ -140,7 +140,14 @@ FCIMPLEND
 FCIMPL1(INT64, GetCompiledMethodCount, CLR_BOOL currentThread)
 {
     FCALL_CONTRACT;
-
+    // WIP-DEBUG-ONLY change: Windows is causing problems in the CI, but can't
+    // be replicated locally. Using this for some logging there to try to figure
+    // it out.
+    printf("\nENTERING GETCOMPILEDMETHODCOUNT:");
+    printf("%d\n", currentThread ? 1 : 0);
+    printf("%ld\n", (long) t_cMethodsJittedForThread);
+    printf("%ld\n", (long) AtomicLoad64WithoutTearing(&g_cMethodsJitted));
+    printf(":EXITING GETCOMPILEDMETHODCOUNT\n");
     return currentThread ? t_cMethodsJittedForThread : AtomicLoad64WithoutTearing(&g_cMethodsJitted);
 }
 FCIMPLEND

src/tests/Directory.Build.targets

@@ -153,6 +153,7 @@
   <Target Name="CheckForTestOutsideOfGroup" BeforeTargets="Build">
     <Error Condition="'$(InMergedTestDirectory)' == 'true'
       and '$(OutputType)' == 'Exe'
+      and '$(_CLRTestNeedsToRun)' == 'true'
       and '$(RequiresProcessIsolation)' != 'true'
       and '$(BuildAsStandalone)' != 'true'
       and '$(IsMergedTestRunnerAssembly)' != 'true'"
@@ -510,7 +511,7 @@
     </ItemGroup>
   </Target>
 
-  <PropertyGroup Condition="'$(Language)' == 'C#' and ('$(BuildAsStandalone)' == 'true' or '$(RequiresProcessIsolation)' == 'true' or '$(InMergedTestDirectory)' == 'true' or '$(IsMergedTestRunnerAssembly)' == 'true')">
+  <PropertyGroup Condition="'$(Language)' == 'C#' and '$(_CLRTestNeedsToRun)' == 'true' and ('$(BuildAsStandalone)' == 'true' or '$(RequiresProcessIsolation)' == 'true' or '$(InMergedTestDirectory)' == 'true' or '$(IsMergedTestRunnerAssembly)' == 'true')">
     <ReferenceXUnitWrapperGenerator Condition="'$(ReferenceXUnitWrapperGenerator)' == ''">true</ReferenceXUnitWrapperGenerator>
   </PropertyGroup>
 

src/tests/readytorun/JittedMethodsCountingTest/JittedMethodsCountingTest.cs

@@ -0,0 +1,60 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+
+using System;
+using Xunit;
+
+using InteropServices = System.Runtime.InteropServices;
+using JitInfo = System.Runtime.JitInfo;
+
+public class JittedMethodsCountingTest
+{
+    private const int MAX_JITTED_METHODS_ACCEPTED = 70;
+
+    [Fact]
+    public static int TestEntryPoint()
+    {
+        // If DOTNET_ReadyToRun is disabled, then this test ought to be skipped.
+        if (!IsReadyToRunEnvSet())
+        {
+            Console.WriteLine("\nThis test is only supported in ReadyToRun scenarios."
+                              + " Skipping...\n");
+            return 100;
+        }
+
+        if (IsRunCrossgen2Set() && IsRunningOnARM64())
+        {
+            Console.WriteLine("\nThis test is currently unsupported on ARM64 when"
+                              + " RunCrossGen2 is enabled. Skipping...\n");
+            return 100;
+        }
+
+        Console.WriteLine("\nHello World from Jitted Methods Counting Test!");
+
+        long jits = JitInfo.GetCompiledMethodCount(false);
+        Console.WriteLine("Number of Jitted Methods in App: {0}\n", jits);
+
+        return (jits >= 0 && jits <= MAX_JITTED_METHODS_ACCEPTED) ? 100 : 101;
+    }
+
+    private static bool IsReadyToRunEnvSet()
+    {
+        string? dotnetR2R = Environment.GetEnvironmentVariable("DOTNET_ReadyToRun");
+        return (string.IsNullOrEmpty(dotnetR2R) || dotnetR2R == "1");
+    }
+
+    private static bool IsRunCrossgen2Set()
+    {
+        string? runCrossgen2 = Environment.GetEnvironmentVariable("RunCrossGen2");
+        return (runCrossgen2 == "1");
+    }
+
+    private static bool IsRunningOnARM64()
+    {
+        InteropServices.Architecture thisMachineArch = InteropServices
+                                                      .RuntimeInformation
+                                                      .OSArchitecture;
+
+        return (thisMachineArch == InteropServices.Architecture.Arm64);
+    }
+}

src/tests/readytorun/JittedMethodsCountingTest/JittedMethodsCountingTest.csproj

@@ -0,0 +1,13 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <DebugType>pdbonly</DebugType>
+    <Optimize>true</Optimize>
+    <JitOptimizationSensitive>true</JitOptimizationSensitive>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <Compile Include="JittedMethodsCountingTest.cs" />
+  </ItemGroup>
+
+</Project>