stan/jdk-24
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

5080203: TEST_BUG: ThreadStateTest fails intermittently

Browse Source 
Retry a few times to check thread status before reporting failure

Reviewed-by: swamyv
This commit is contained in:
Mandy Chung 2009-05-26 18:02:44 -07:00
parent bb698a2b6f
commit 354731edb5
1 changed files with 25 additions and 64 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

89
jdk/test/java/lang/management/ThreadMXBean/ThreadStateTest.java
View File

@ -24,14 +24,13 @@
/*
* @test
* @bug 4967283 5080203
* @ignore Due to 5080203, cannot rely on this test always passing.
* @summary Basic unit test of thread states returned by
* ThreadMXBean.getThreadInfo.getThreadState().
* It also tests lock information returned by ThreadInfo.
*
* @author Mandy Chung
*
* @build ThreadExecutionSynchronizer
* @build ThreadExecutionSynchronizer Utils
* @run main ThreadStateTest
*/
@ -43,7 +42,6 @@ import java.util.concurrent.locks.LockSupport;
public class ThreadStateTest {
private static final ThreadMXBean tm = ManagementFactory.getThreadMXBean();
private static boolean testFailed = false;
static class Lock {
private String name;
@ -64,32 +62,32 @@ public class ThreadStateTest {
MyThread myThread = new MyThread("MyThread");
// before myThread starts
// checkThreadState(myThread, Thread.State.NEW);
// Utils.checkThreadState(myThread, Thread.State.NEW);
myThread.start();
myThread.waitUntilStarted();
checkThreadState(myThread, Thread.State.RUNNABLE);
Utils.checkThreadState(myThread, Thread.State.RUNNABLE);
checkLockInfo(myThread, Thread.State.RUNNABLE, null, null);
myThread.suspend();
goSleep(10);
Utils.goSleep(10);
checkSuspendedThreadState(myThread, Thread.State.RUNNABLE);
myThread.resume();
synchronized (globalLock) {
myThread.goBlocked();
checkThreadState(myThread, Thread.State.BLOCKED);
Utils.checkThreadState(myThread, Thread.State.BLOCKED);
checkLockInfo(myThread, Thread.State.BLOCKED,
globalLock, Thread.currentThread());
}
myThread.goWaiting();
checkThreadState(myThread, Thread.State.WAITING);
Utils.checkThreadState(myThread, Thread.State.WAITING);
checkLockInfo(myThread, Thread.State.WAITING,
globalLock, null);
myThread.goTimedWaiting();
checkThreadState(myThread, Thread.State.TIMED_WAITING);
Utils.checkThreadState(myThread, Thread.State.TIMED_WAITING);
checkLockInfo(myThread, Thread.State.TIMED_WAITING,
globalLock, null);
@ -102,32 +100,30 @@ public class ThreadStateTest {
Bug ID : 5062095
***********************************************
myThread.goParked();
checkThreadState(myThread, Thread.State.WAITING);
Utils.checkThreadState(myThread, Thread.State.WAITING);
checkLockInfo(myThread, Thread.State.WAITING, null, null);
myThread.goTimedParked();
checkThreadState(myThread, Thread.State.TIMED_WAITING);
Utils.checkThreadState(myThread, Thread.State.TIMED_WAITING);
checkLockInfo(myThread, Thread.State.TIMED_WAITING, null, null);
*/
myThread.goSleeping();
checkThreadState(myThread, Thread.State.TIMED_WAITING);
Utils.checkThreadState(myThread, Thread.State.TIMED_WAITING);
checkLockInfo(myThread, Thread.State.TIMED_WAITING, null, null);
myThread.terminate();
// checkThreadState(myThread, ThreadState.TERMINATED);
// Utils.checkThreadState(myThread, ThreadState.TERMINATED);
try {
myThread.join();
} catch (InterruptedException e) {
e.printStackTrace();
System.out.println("Unexpected exception.");
testFailed = true;
System.out.println("TEST FAILED: Unexpected exception.");
throw new RuntimeException(e);
}
if (testFailed)
throw new RuntimeException("TEST FAILED.");
System.out.println("Test passed.");
}
@ -148,32 +144,7 @@ public class ThreadStateTest {
throw new RuntimeException(t.getName() + " expected to be suspended " +
" but isSuspended() returns " + info.isSuspended());
}
checkThreadState(t, state);
}
private static void checkThreadState(Thread t, Thread.State expected) {
ThreadInfo ti = tm.getThreadInfo(t.getId());
Thread.State state = ti.getThreadState();
if (state == null) {
throw new RuntimeException(t.getName() + " expected to have " +
expected + " but got null.");
}
if (state != expected) {
if (expected == Thread.State.BLOCKED) {
int retryCount=0;
while (ti.getThreadState() != expected) {
if (retryCount >= 500) {
throw new RuntimeException(t.getName() +
" expected to have " + expected + " but got " + state);
}
goSleep(100);
}
} else {
throw new RuntimeException(t.getName() + " expected to have " +
expected + " but got " + state);
}
}
Utils.checkThreadState(t, state);
}
private static String getLockName(Object lock) {
@ -250,16 +221,6 @@ public class ThreadStateTest {
}
}
private static void goSleep(long ms) {
try {
Thread.sleep(ms);
} catch (InterruptedException e) {
e.printStackTrace();
System.out.println("Unexpected exception.");
testFailed = true;
}
}
static class MyThread extends Thread {
private ThreadExecutionSynchronizer thrsync = new ThreadExecutionSynchronizer();
@ -335,7 +296,7 @@ public class ThreadStateTest {
LockSupport.park();
// give a chance for the main thread to block
System.out.println(" myThread is going to park.");
goSleep(10);
Utils.goSleep(10);
break;
}
case TIMED_PARKED: {
@ -346,7 +307,7 @@ public class ThreadStateTest {
LockSupport.parkUntil(deadline);
// give a chance for the main thread to block
goSleep(10);
Utils.goSleep(10);
break;
}
case SLEEPING: {
@ -375,7 +336,7 @@ public class ThreadStateTest {
public void waitUntilStarted() {
// wait for MyThread.
thrsync.waitForSignal();
goSleep(10);
Utils.goSleep(10);
}
public void goBlocked() {
@ -383,7 +344,7 @@ public class ThreadStateTest {
setState(BLOCKED);
// wait for MyThread to get blocked
thrsync.waitForSignal();
goSleep(20);
Utils.goSleep(20);
}
public void goWaiting() {
@ -391,28 +352,28 @@ public class ThreadStateTest {
setState(WAITING);
// wait for MyThread to wait on object.
thrsync.waitForSignal();
goSleep(20);
Utils.goSleep(20);
}
public void goTimedWaiting() {
System.out.println("Waiting myThread to go timed waiting.");
setState(TIMED_WAITING);
// wait for MyThread timed wait call.
thrsync.waitForSignal();
goSleep(20);
Utils.goSleep(20);
}
public void goParked() {
System.out.println("Waiting myThread to go parked.");
setState(PARKED);
// wait for MyThread state change to PARKED.
thrsync.waitForSignal();
goSleep(20);
Utils.goSleep(20);
}
public void goTimedParked() {
System.out.println("Waiting myThread to go timed parked.");
setState(TIMED_PARKED);
// wait for MyThread.
thrsync.waitForSignal();
goSleep(20);
Utils.goSleep(20);
}
public void goSleeping() {
@ -420,21 +381,21 @@ public class ThreadStateTest {
setState(SLEEPING);
// wait for MyThread.
thrsync.waitForSignal();
goSleep(20);
Utils.goSleep(20);
}
public void terminate() {
System.out.println("Waiting myThread to terminate.");
setState(TERMINATE);
// wait for MyThread.
thrsync.waitForSignal();
goSleep(20);
Utils.goSleep(20);
}
private void setState(int newState) {
switch (state) {
case BLOCKED:
while (state == BLOCKED) {
goSleep(20);
Utils.goSleep(20);
}
state = newState;
break;