Add support for PGO instrumentation (#471)

* Add support for PGO instrumentation

This commit adds support for PGO instrumentation. This should be
enabled by adding the `--pgo-instrument` option to the Gradle
command line. When this is done, then the generated binary will
be compiled with PGO instrumentation enabled, and the binary
name will be suffixed with `-instrumented`.

It is possible to run the instrumented binary directly too,
in which case the profile files will be written in the same
directory as the binary.

* Add support for a PGO profiles directory

By convention, the directory is set to `src/pgo-profiles/<binary>`.
For example, for the `main` binary, the directory where to put
PGO profiles would be `src/pgo-profiles/main`. If that directory
is present _and that we're not instrumenting_, then the profile
will be used when compiling with native image.

It is possible to provide multiple profiles in a single directory.

* Remove GraalVM version from workflows

* Add documentation about PGO support

See #457

* Fix JUnit native test

* Make checkstyle happy

* Fix tests

* Temporarily(?) disable testing with config cache

As we're not compatible. Test `org.graalvm.buildtools.gradle.OfficialMetadataRepoFunctionalTest`
throws an incomprehensible error message, in all versions of Gradle I've tested:

```
Configuration cache state could not be cached: field `spec` of `org.gradle.api.internal.tasks.execution.SelfDescribingSpec` bean found in task `:compileJava` of type `org.gradle.api.tasks.compile.JavaCompile`: error writing value of type 'org.gradle.api.internal.tasks.compile.CompilerForkUtils$$Lambda$1235/0x00000008015b1c38'
> Unable to make field private final java.lang.Object[] java.lang.invoke.SerializedLambda.capturedArgs accessible: module java.base does not "opens java.lang.invoke" to unnamed module @3cc98b0c
```

This PR also rewrote some code which fixed other configuration
cache issues which arose _before_ reaching this one.

* Upgrade to JUnit 5.10.0

* Make checkstyle happy

* Fix test

* Restore configuration cache tests

* Update baseline versions for config cache

.github/actions/prepare-environment/action.yml

@@ -6,14 +6,10 @@ inputs:
     description: 'secrets.GITHUB_TOKEN'
     required: false
     default: ''
-  graalvm-version:
-    description: 'GraalVM version to use'
-    required: false
-    default: 'dev'
   java-version:
     description: 'Java version to use'
     required: false
-    default: '11'
+    default: '17'
   push-access:
     description: 'Does this workflow require push access?'
     required: false
@@ -26,13 +22,13 @@ inputs:
 runs:
   using: "composite"
   steps:
-    - name: "🔧 Install GraalVM ${{ inputs.graalvm-version }} (JDK${{ inputs.java-version }})"
+    - name: "🔧 Install GraalVM (JDK${{ inputs.java-version }})"
       uses: graalvm/setup-graalvm@main
       with:
         components: 'native-image'
         github-token: ${{ inputs.github-token }}
         java-version: ${{ inputs.java-version }}
-        version: ${{ inputs.graalvm-version }}
+        distribution: 'graalvm'
     - name: "🔒 Configure push access"
       if: ${{ inputs.push-access == '1' }}
       shell: "bash"

.github/workflows/deploy-documentation.yml

@@ -18,8 +18,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        graalvm-version: [ latest ]
-        java-version: [ 11 ]
+        java-version: [ 17 ]
         os: [ ubuntu-20.04 ]
     steps:
       - name: "☁  Checkout repository"
@@ -30,7 +29,6 @@ jobs:
         uses: ./.github/actions/prepare-environment
         with:
           github-token: ${{ secrets.GITHUB_TOKEN }}
-          graalvm-version: ${{ matrix.graalvm-version }}
           java-version: ${{ matrix.java-version }}
           push-access: 1
           ssh-key: ${{ secrets.SSH_PRIVATE_KEY }}

.github/workflows/deploy-snapshots.yml

@@ -20,8 +20,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        graalvm-version: [ latest ]
-        java-version: [ 11 ]
+        java-version: [ 17 ]
         os: [ ubuntu-22.04 ]
     steps:
       - name: "☁  Checkout repository"
@@ -32,7 +31,6 @@ jobs:
         uses: ./.github/actions/prepare-environment
         with:
           github-token: ${{ secrets.GITHUB_TOKEN }}
-          graalvm-version: ${{ matrix.graalvm-version }}
           java-version: ${{ matrix.java-version }}
           push-access: 1
           ssh-key: ${{ secrets.SSH_PRIVATE_KEY }}

.github/workflows/test-graalvm-metadata.yml

@@ -24,16 +24,14 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        graalvm-version: [ 22.3.0 ]
-        java-version: [ 11 ]
+        java-version: [ 17 ]
         os: [ ubuntu-20.04 ]
     steps:
       - name: "☁️ Checkout repository"
         uses: actions/checkout@v2
       - name: "🔧 Prepare environment"
         uses: ./.github/actions/prepare-environment
         with:
-          graalvm-version: ${{ matrix.graalvm-version }}
           java-version: ${{ matrix.java-version }}
           github-token: ${{ secrets.GITHUB_TOKEN }}
       - name: "❓ Checkstyle"

.github/workflows/test-junit-platform-native.yml

@@ -24,16 +24,14 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        graalvm-version: [ 22.3.0 ]
-        java-version: [ 11 ]
+        java-version: [ 17 ]
         os: [ ubuntu-20.04 ]
     steps:
       - name: "☁️ Checkout repository"
         uses: actions/checkout@v2
       - name: "🔧 Prepare environment"
         uses: ./.github/actions/prepare-environment
         with:
-          graalvm-version: ${{ matrix.graalvm-version }}
           java-version: ${{ matrix.java-version }}
           github-token: ${{ secrets.GITHUB_TOKEN }}
       - name: "❓ Checkstyle"

.github/workflows/test-native-gradle-plugin.yml

@@ -28,16 +28,14 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        graalvm-version: [ latest ] # dev
-        java-version: [ 11 ]
+        java-version: [ 17 ]
         os: [ ubuntu-20.04 ]
     steps:
       - name: "☁️ Checkout repository"
         uses: actions/checkout@v2
       - name: "🔧 Prepare environment"
         uses: ./.github/actions/prepare-environment
         with:
-          graalvm-version: ${{ matrix.graalvm-version }}
           java-version: ${{ matrix.java-version }}
           github-token: ${{ secrets.GITHUB_TOKEN }}
       - name: "❓ Unit tests and inspections"
@@ -54,18 +52,16 @@ jobs:
       fail-fast: false
       matrix:
         gradle-version: ["current", "7.4"]
-        gradle-config-cache-version: ["current", "7.5.1"]
+        gradle-config-cache-version: ["current", "8.0.1"]
         # Following versions are disabled temporarily in order to speed up PR testing
         # "7.3.3", "7.2", "7.1", "6.8.3"
-        graalvm-version: [ latest ] # dev
-        java-version: [ 11 ]
+        java-version: [ 17 ]
         os: [ ubuntu-20.04 ]
     steps:
       - name: "☁️ Checkout repository"
         uses: actions/checkout@v2
       - uses: ./.github/actions/prepare-environment
         with:
-          graalvm-version: ${{ matrix.graalvm-version }}
           java-version: ${{ matrix.java-version }}
           github-token: ${{ secrets.GITHUB_TOKEN }}
       - name: "❓ Check and test the plugin"
@@ -86,15 +82,13 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        graalvm-version: [ latest ]
-        java-version: [ 11 ]
+        java-version: [ 17 ]
         os: [ windows-latest ]
     steps:
       - name: "☁️ Checkout repository"
         uses: actions/checkout@v2
       - uses: ./.github/actions/prepare-environment
         with:
-          graalvm-version: ${{ matrix.graalvm-version }}
           java-version: ${{ matrix.java-version }}
           github-token: ${{ secrets.GITHUB_TOKEN }}
       - name: "❓ Check and test the Gradle plugin"

.github/workflows/test-native-maven-plugin.yml

@@ -28,15 +28,13 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        graalvm-version: [ latest ] # dev
-        java-version: [ 11 ]
+        java-version: [ 17 ]
         os: [ ubuntu-20.04 ]
     steps:
       - name: "☁️ Checkout repository"
         uses: actions/checkout@v2
       - uses: ./.github/actions/prepare-environment
         with:
-          graalvm-version: ${{ matrix.graalvm-version }}
           java-version: ${{ matrix.java-version }}
           github-token: ${{ secrets.GITHUB_TOKEN }}
       - name: "❓ Check and test the plugin"
@@ -55,15 +53,13 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        graalvm-version: [ latest ] # dev
-        java-version: [ 11 ]
+        java-version: [ 17 ]
         os: [ windows-latest ]
     steps:
       - name: "☁️ Checkout repository"
         uses: actions/checkout@v2
       - uses: ./.github/actions/prepare-environment
         with:
-          graalvm-version: ${{ matrix.graalvm-version }}
           java-version: ${{ matrix.java-version }}
           github-token: ${{ secrets.GITHUB_TOKEN }}
       - name: "❓ Check and test the Maven plugin"

build-logic/gradle-functional-testing/src/main/groovy/org.graalvm.build.functional-testing.gradle

@@ -75,14 +75,14 @@ gradlePlugin.testSourceSets(sourceSets.functionalTest)
 configurations.functionalTestImplementation.extendsFrom(configurations.testImplementation)
 
 def graalVm = javaToolchains.launcherFor {
-    languageVersion.set(JavaLanguageVersion.of(11))
-    vendor.set(JvmVendorSpec.matching("GraalVM"))
+    languageVersion.set(JavaLanguageVersion.of(17))
+//    vendor.set(JvmVendorSpec.matching("Oracle Corporation"))
 }
 
 def fullFunctionalTest = tasks.register("fullFunctionalTest")
 
 ['functionalTest', 'configCacheFunctionalTest'].each { baseName ->
-    ["current", "7.4", "7.6.2"].each { gradleVersion ->
+    ["current", "7.4", "7.6.2", "8.0.1"].each { gradleVersion ->
         String taskName = gradleVersion == 'current' ? baseName : "gradle${gradleVersion}${baseName.capitalize()}"
         // Add a task to run the functional tests
         def testTask = tasks.register(taskName, Test) {
@@ -105,6 +105,14 @@ def fullFunctionalTest = tasks.register("fullFunctionalTest")
             javaLauncher.set(graalVm)
             if (baseName == 'configCacheFunctionalTest') {
                 systemProperty('config.cache', 'true')
+                // These args are required so that we can debug tests which
+                // run with the configuration cache, see https://github.com/gradle/gradle/issues/25898
+                jvmArgs = [
+                        '--add-opens=java.base/java.lang=ALL-UNNAMED',
+                        '--add-opens=java.base/java.util=ALL-UNNAMED',
+                        '--add-opens=java.base/java.lang.invoke=ALL-UNNAMED',
+                        '--add-opens=java.base/java.net=ALL-UNNAMED',
+                ]
             }
         }
         fullFunctionalTest.configure {

common/junit-platform-native/build.gradle

@@ -61,7 +61,7 @@ dependencies {
 
 apply from: "gradle/native-image-testing.gradle"
 
-test {
+tasks.named('test') {
     doFirst {
         delete { delete testIdsDir.get().asFile }
     }

common/junit-platform-native/src/main/java/org/graalvm/junit/platform/config/jupiter/JupiterConfigProvider.java

@@ -81,16 +81,25 @@ public void onLoad(NativeImageConfiguration config) {
                 "org.junit.jupiter.engine.execution.ConditionEvaluator",
                 "org.junit.jupiter.engine.execution.ExecutableInvoker",
                 "org.junit.jupiter.params.provider.EnumSource$Mode",
+                // new in Junit 5.10
+                "org.junit.platform.launcher.core.LauncherConfig",
+                "org.junit.jupiter.engine.config.InstantiatingConfigurationParameterConverter"
         };
         for (String className : buildTimeInitializedClasses) {
             config.initializeAtBuildTime(className);
         }
 
-        try {
-            Class <?> executor = Class.forName("org.junit.jupiter.engine.extension.TimeoutExtension$ExecutorResource");
-            config.registerAllClassMembersForReflection(executor);
-        } catch (ClassNotFoundException e) {
-            debug("Failed to register class for reflection. Reason: %s", e);
+        String[] registeredForReflection = {
+                "org.junit.jupiter.engine.extension.TimeoutExtension$ExecutorResource",
+                "org.junit.jupiter.engine.extension.TimeoutInvocationFactory$SingleThreadExecutorResource"
+        };
+        for (String className : registeredForReflection) {
+            try {
+                Class <?> executor = Class.forName(className);
+                config.registerAllClassMembersForReflection(executor);
+            } catch (ClassNotFoundException e) {
+                debug("Failed to register class for reflection. Reason: %s", e);
+            }
         }
     }
 

docs/src/docs/asciidoc/gradle-plugin.adoc

@@ -449,6 +449,47 @@ include::../snippets/gradle/kotlin/build.gradle.kts[tags=include-metadata]
 
 For more advanced configurations you can declare a `org.graalvm.buildtools.gradle.tasks.CollectReachabilityMetadata` task and set the appropriate properties.
 
+[[pgo-support]]
+== Profile-guided optimizations
+
+The plugin supports building images with https://www.graalvm.org/latest/reference-manual/native-image/guides/optimize-native-executable-with-pgo/[Profile-Guided Optimizations].
+
+It works in 3 phases:
+
+- the first one consists in generating a binary with instrumentation enabled
+- the second phase consists in running the binary in order to gather profiling information
+- the third phase consists in compiling the binary with the generated profile
+
+In order to generate a binary with instrumentation enabled, you should run the `nativeCompile` command with the `--pgo-instrument` command line option:
+
+`./gradlew nativeCompile --pgo-instrument`
+
+This will generate a binary under `build/native/nativeCompile` with the `-instrumented` suffix.
+You can run the binary to gather profiling data:
+
+[source,bash]
+----
+$ cd build/native/nativeCompile/
+$ ./my-application-instrumented`
+----
+
+A `default.iprof` file will be generated once the application is stopped.
+Alternatively, you can have Gradle both generate and run the instrumented binary in a single command by running:
+
+`./gradlew nativeCompile --pgo-instrument nativeRun`
+
+In which case the profile will automatically be stored into `build/native/nativeCompile`.
+
+The last phase consists in copying the generated profile, so that it's automatically used when building the native binary.
+The conventional location for profiles is `src/pgo-profiles/<name of the binary>`.
+By default, we're using the `main` binary so the location will be `src/pgo-profiles/main`.
+Copy the `default.iprof` file into that directory, then run:
+
+`./gradlew nativeCompile`
+
+The profile will automatically be used and the binary compiled with PGO.
+It is possible to include more than one profile, in which case you should rename the `.iprof` files in the `src/pgo-profiles/main` directory.
+
 [[plugin-configurations]]
 == Configurations defined by the plugin
 

docs/src/docs/asciidoc/index.adoc

@@ -19,6 +19,12 @@ If you are using alternative build systems, see <<alternative-build-systems.adoc
 [[changelog]]
 == Changelog
 
+=== Release 0.9.24
+
+==== Gradle plugin
+
+* Add support for PGO
+
 === Release 0.9.23
 
 * Upgrade metadata to 0.3.2

gradle/libs.versions.toml

@@ -11,8 +11,8 @@ mavenEmbedder = "3.8.6"
 mavenWagon = "3.4.3"
 graalvm = "22.0.0"
 jackson = "2.13.3"
-junitPlatform = "1.8.1"
-junitJupiter = "5.8.1"
+junitPlatform = "1.9.3"
+junitJupiter = "5.10.0"
 aether = "1.1.0"
 slf4j = "1.7.9"
 groovy = "3.0.11"

gradle/wrapper/gradle-wrapper.properties

@@ -1,5 +1,5 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-8.0.2-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.2.1-bin.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists