Use Flight Recorder when registerStandardMXBeans is called

Netflix · Sep 3, 2024 · 9bb718a · 9bb718a
1 parent fdf7d82
commit 9bb718a
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diff --git a/spectator-ext-jvm/build.gradle b/spectator-ext-jvm/build.gradle
@@ -55,5 +55,7 @@ def testJava17 = tasks.register('testJava17', Test) {
   javaLauncher = javaToolchains.launcherFor {
     languageVersion = JavaLanguageVersion.of(17)
   }
+
+  jvmArgs '-XX:+UseG1GC'
 }
 check.dependsOn testJava17
diff --git a/spectator-ext-jvm/src/main/java/com/netflix/spectator/jvm/Jmx.java b/spectator-ext-jvm/src/main/java/com/netflix/spectator/jvm/Jmx.java
@@ -27,6 +27,8 @@
 import java.lang.management.ManagementFactory;
 import java.lang.management.MemoryPoolMXBean;
 import java.lang.management.ThreadMXBean;
+import java.util.concurrent.Executor;
+import java.util.concurrent.Executors;
 
 /**
  * Helpers for working with JMX mbeans.
@@ -42,6 +44,15 @@ private Jmx() {
    * mbeans from the local jvm.
    */
   public static void registerStandardMXBeans(Registry registry) {
+    if (JavaFlightRecorder.isSupported()) {
+      Executor executor = Executors.newSingleThreadExecutor(r -> {
+        Thread t = new Thread(r, "spectator-jfr");
+        t.setDaemon(true);
+        return t;
+      });
+      JavaFlightRecorder.monitorDefaultEvents(registry, executor);
+      return;
+    }
     monitorClassLoadingMXBean(registry);
     monitorThreadMXBean(registry);
     monitorCompilationMXBean(registry);