8335124: com/sun/management/ThreadMXBean/ThreadCpuTimeArray.java failed with CPU time out of expected range

kevinjwalls · kevinjwalls · commit 79a3554e1da6 · 2024-06-28T19:01:36.000Z
Reviewed-by: phh, cjplummer
diff --git a/test/jdk/com/sun/management/ThreadMXBean/ThreadCpuTimeArray.java b/test/jdk/com/sun/management/ThreadMXBean/ThreadCpuTimeArray.java
@@ -75,7 +75,6 @@ public static void main(String[] argv)
         // threads block after doing some computation
         waitUntilThreadBlocked();
 
-
         long times[] = mbean.getThreadCpuTime(ids);
         long userTimes[] = mbean.getThreadUserTime(ids);
 
@@ -222,6 +221,8 @@ private static void waitUntilThreadBlocked()
                 }
             }
         }
+        // Account for threads using CPU for a few millis after their WAITING state is visible:
+        goSleep(500);
     }
 
     public static void doit() {

Original file line number	Diff line number	Diff line change
`@@ -75,7 +75,6 @@ public static void main(String[] argv)`
`75`	`75`	`// threads block after doing some computation`
`76`	`76`	`waitUntilThreadBlocked();`
`77`	`77`
`78`		`-`
`79`	`78`	`long times[] = mbean.getThreadCpuTime(ids);`
`80`	`79`	`long userTimes[] = mbean.getThreadUserTime(ids);`
`81`	`80`
`@@ -222,6 +221,8 @@ private static void waitUntilThreadBlocked()`
`222`	`221`	`}`
`223`	`222`	`}`
`224`	`223`	`}`
	`224`	`+ // Account for threads using CPU for a few millis after their WAITING state is visible:`
	`225`	`+ goSleep(500);`
`225`	`226`	`}`
`226`	`227`
`227`	`228`	`public static void doit() {`