Include GWT version, commit in JFR output

dev/codeserver/java/com/google/gwt/dev/codeserver/CodeServer.java

@@ -24,6 +24,7 @@
 import com.google.gwt.dev.javac.UnitCacheSingleton;
 import com.google.gwt.dev.util.DiskCachingUtil;
 import com.google.gwt.dev.util.log.PrintWriterTreeLogger;
+import com.google.gwt.dev.util.log.perf.GwtStartupEvent;
 import com.google.gwt.thirdparty.guava.common.collect.ImmutableMap;
 
 import java.io.File;
@@ -51,6 +52,7 @@ public static void main(String[] args) throws Exception {
     if (!options.parseArgs(args)) {
       System.exit(1);
     }
+    new GwtStartupEvent(CodeServer.class);
 
     main(options);
   }

dev/core/src/com/google/gwt/dev/About.java

@@ -24,7 +24,7 @@
  */
 public class About {
   /**
-   * Tag used for text replacement of the SVN version (split up to avoid
+   * Tag used for text replacement of the Git version (split up to avoid
    * replacing it here).
    */
   private static final String GWT_GITREV_TAG = "@GWT_" + "GITREV@";
@@ -35,7 +35,7 @@ public class About {
    */
   private static final String GWT_VERSION_TAG = "@GWT_" + "VERSION@";
 
-  private static final String gwtName = "Google Web Toolkit";
+  private static final String gwtName = "GWT Web Toolkit";
   private static final String gwtGitRev;
   private static final GwtVersion gwtVersion;
 

dev/core/src/com/google/gwt/dev/CompilePermsServer.java

@@ -26,6 +26,7 @@
 import com.google.gwt.dev.util.arg.ArgHandlerLogLevel;
 import com.google.gwt.dev.util.arg.OptionLogLevel;
 import com.google.gwt.dev.util.log.PrintWriterTreeLogger;
+import com.google.gwt.dev.util.log.perf.GwtStartupEvent;
 import com.google.gwt.util.tools.ArgHandlerString;
 
 import java.io.File;
@@ -234,6 +235,7 @@ public static void main(String[] args) {
     int exitCode = -1;
     final CompileServerOptions options = new CompileServerOptionsImpl();
     if (new ArgProcessor(options).processArgs(args)) {
+      new GwtStartupEvent(CompilePermsServer.class);
       PrintWriterTreeLogger logger = new PrintWriterTreeLogger();
       logger.setMaxDetail(options.getLogLevel());
       if (run(options, logger)) {

dev/core/src/com/google/gwt/dev/Compiler.java

@@ -35,6 +35,7 @@
 import com.google.gwt.dev.util.arg.ArgHandlerWarDir;
 import com.google.gwt.dev.util.arg.ArgHandlerWorkDirOptional;
 import com.google.gwt.dev.util.arg.OptionOptimize;
+import com.google.gwt.dev.util.log.perf.GwtStartupEvent;
 import com.google.gwt.dev.util.log.perf.SimpleEvent;
 import com.google.gwt.thirdparty.guava.common.collect.Sets;
 import com.google.gwt.thirdparty.guava.common.io.MoreFiles;
@@ -101,6 +102,7 @@ public static void main(String[] args) {
      */
     final CompilerOptions options = new CompilerOptionsImpl();
     if (new ArgProcessor(options).processArgs(args)) {
+      new GwtStartupEvent(Compiler.class);
       CompileTask task = new CompileTask() {
         @Override
         public boolean run(TreeLogger logger) throws UnableToCompleteException {

dev/core/src/com/google/gwt/dev/DevMode.java

@@ -46,6 +46,7 @@
 import com.google.gwt.dev.util.arg.ArgHandlerWarDir;
 import com.google.gwt.dev.util.arg.ArgHandlerWorkDirOptional;
 import com.google.gwt.dev.util.arg.OptionModulePathPrefix;
+import com.google.gwt.dev.util.log.perf.GwtStartupEvent;
 import com.google.gwt.dev.util.log.perf.SimpleEvent;
 import com.google.gwt.thirdparty.guava.common.io.MoreFiles;
 import com.google.gwt.thirdparty.guava.common.io.RecursiveDeleteOption;
@@ -473,6 +474,7 @@ public static void main(String[] args) {
      */
     DevMode hostedMode = new DevMode();
     if (new ArgProcessor(hostedMode.options).processArgs(args)) {
+      new GwtStartupEvent(DevMode.class);
       hostedMode.run();
       // Exit w/ success code.
       System.exit(0);

dev/core/src/com/google/gwt/dev/util/log/perf/GwtStartupEvent.java

@@ -0,0 +1,47 @@
+/*
+ * Copyright 2026 GWT Project Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not
+ * use this file except in compliance with the License. You may obtain a copy of
+ * the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations under
+ * the License.
+ */
+package com.google.gwt.dev.util.log.perf;
+
+import com.google.gwt.dev.About;
+
+import jdk.jfr.Category;
+import jdk.jfr.Description;
+import jdk.jfr.Event;
+import jdk.jfr.Name;
+import jdk.jfr.StackTrace;
+
+/**
+ * Logs the class that was used to run GWT and the GWT build in use.
+ */
+@Name("gwt.Startup")
+@Description("Basic startup info about the current GWT process")
+@Category("GWT")
+@StackTrace(false)
+public class GwtStartupEvent extends Event {
+  @Description("GWT compiler version")
+  final String gwtVersion = About.getGwtVersion();
+
+  @Description("Git revision of the GWT compiler build")
+  final String gwtCommit = About.getGwtGitRev();
+
+  @Description("Class being invoked to start the compiler")
+  final Class<?> main;
+
+  public GwtStartupEvent(Class<?> main) {
+    this.main = main;
+    commit();
+  }
+}

dev/core/test/com/google/gwt/dev/AboutTest.java

@@ -24,14 +24,19 @@ public class AboutTest extends TestCase {
 
   public void testGwtName() {
     String result = About.getGwtName();
-    assertTrue("Google Web Toolkit".equals(result));
+    assertTrue("GWT Web Toolkit".equals(result));
   }
 
   public void testGwtSvnRev() {
     String result = About.getGwtSvnRev();
     assertFalse(result.length() == 0);
   }
 
+  public void testGwtGitRev() {
+    String result = About.getGwtGitRev();
+    assertFalse(result.length() == 0);
+  }
+
   public void testGwtVersion() {
     String result = About.getGwtVersion();
     assertFalse(result.length() == 0);

user/src/com/google/gwt/junit/JUnitShell.java

@@ -63,6 +63,7 @@
 import com.google.gwt.dev.util.arg.ArgHandlerStrict;
 import com.google.gwt.dev.util.arg.ArgHandlerWarDir;
 import com.google.gwt.dev.util.arg.ArgHandlerWorkDirOptional;
+import com.google.gwt.dev.util.log.perf.GwtStartupEvent;
 import com.google.gwt.junit.JUnitMessageQueue.ClientStatus;
 import com.google.gwt.junit.client.GWTTestCase;
 import com.google.gwt.junit.client.TimeoutException;
@@ -694,6 +695,8 @@ static JUnitShell getUnitTestShell() {
       if (!argProcessor.processArgs(args)) {
         throw new JUnitFatalLaunchException("Error processing shell arguments");
       }
+      new GwtStartupEvent(JUnitShell.class);
+
       // Always bind to the wildcard address and substitute the host address in
       // URLs. Note that connectAddress isn't actually used here, as we
       // override it from the runsStyle in getModuleUrl, but we set it to match