8299241: jdk/jfr/api/consumer/streaming/TestJVMCrash.java generates unnecessary core file

Backport-of: 188911c925e4067c7f912c5ddb6f715bad7a3892

Author: GoeLin

test/jdk/jdk/jfr/api/consumer/streaming/TestJVMCrash.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2019, 2021, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2019, 2022, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -43,7 +43,7 @@ public class TestJVMCrash {
     public static void main(String... args) throws Exception  {
         int id = 1;
         while (true) {
-            try (TestProcess process = new TestProcess("crash-application-" + id++))  {
+            try (TestProcess process = new TestProcess("crash-application-" + id++, false /* createCore */))  {
                 AtomicInteger eventCounter = new AtomicInteger();
                 try (EventStream es = EventStream.openRepository(process.getRepository())) {
                     // Start from first event in repository

test/jdk/jdk/jfr/api/consumer/streaming/TestProcess.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2019, 2020, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2019, 2022, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -54,11 +54,16 @@ private static class TestEvent extends Event {
     private final Path path;
 
     public TestProcess(String name) throws IOException {
+        this(name, true /* createCore */);
+    }
+
+    public TestProcess(String name, boolean createCore) throws IOException {
         this.path = Paths.get("action-" + System.currentTimeMillis()).toAbsolutePath();
         String[] args = {
                 "--add-exports",
                 "java.base/jdk.internal.misc=ALL-UNNAMED",
                 "-XX:StartFlightRecording:settings=none",
+                "-XX:" + (createCore ? "+" : "-") + "CreateCoredumpOnCrash",
                 TestProcess.class.getName(), path.toString()
             };
         ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(args);