8298073: gc/metaspace/CompressedClassSpaceSizeInJmapHeap.java causes test task timeout on macosx

8241293: CompressedClassSpaceSizeInJmapHeap.java time out after 8 minutes

Reviewed-by: phh
Backport-of: 99a6c47855ad82e81a80726cf3aa4522c547716d

Author: GoeLin

test/hotspot/jtreg/gc/metaspace/CompressedClassSpaceSizeInJmapHeap.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2013, 2020, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2013, 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
@@ -32,11 +32,12 @@
  * @library /test/lib
  * @modules java.base/jdk.internal.misc
  *          java.management
- * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:CompressedClassSpaceSize=50m gc.metaspace.CompressedClassSpaceSizeInJmapHeap
+ * @run main/timeout=240 gc.metaspace.CompressedClassSpaceSizeInJmapHeap
  */
 
 import jdk.test.lib.JDKToolLauncher;
 import jdk.test.lib.Platform;
+import jdk.test.lib.apps.LingeredApp;
 import jdk.test.lib.process.OutputAnalyzer;
 import jdk.test.lib.process.ProcessTools;
 import jdk.test.lib.SA.SATestUtils;
@@ -55,7 +56,9 @@ public static void main(String[] args) throws Exception {
             return;
         }
 
-        String pid = Long.toString(ProcessTools.getProcessId());
+        LingeredApp theApp = new LingeredApp();
+        LingeredApp.startApp(List.of("-XX:CompressedClassSpaceSize=50m"), theApp);
+        String pid = Long.toString(theApp.getPid());
 
         JDKToolLauncher jmap = JDKToolLauncher.create("jhsdb")
                                               .addToolArg("jmap")
@@ -75,6 +78,8 @@ public static void main(String[] args) throws Exception {
         OutputAnalyzer output = new OutputAnalyzer(read(out));
         output.shouldContain("CompressedClassSpaceSize = 52428800 (50.0MB)");
         out.delete();
+
+        LingeredApp.stopApp(theApp);
     }
 
     private static void run(ProcessBuilder pb) throws Exception {