49 |
|
import java.io.ObjectInputStream; |
50 |
|
import java.io.ObjectOutputStream; |
51 |
|
import java.lang.management.ManagementFactory; |
52 |
+ |
import java.lang.management.LockInfo; |
53 |
|
import java.lang.management.ThreadInfo; |
54 |
|
import java.lang.management.ThreadMXBean; |
55 |
|
import java.lang.reflect.Constructor; |
244 |
|
} |
245 |
|
} |
246 |
|
|
247 |
+ |
private static final ThreadMXBean THREAD_MXBEAN |
248 |
+ |
= ManagementFactory.getThreadMXBean(); |
249 |
+ |
|
250 |
|
/** |
251 |
|
* The scaling factor to apply to standard delays used in tests. |
252 |
|
* May be initialized from any of: |
288 |
|
static volatile TestCase currentTestCase; |
289 |
|
// static volatile int currentRun = 0; |
290 |
|
static { |
291 |
< |
Runnable checkForWedgedTest = new Runnable() { public void run() { |
291 |
> |
Runnable wedgedTestDetector = new Runnable() { public void run() { |
292 |
|
// Avoid spurious reports with enormous runsPerTest. |
293 |
|
// A single test case run should never take more than 1 second. |
294 |
|
// But let's cap it at the high end too ... |
314 |
|
} |
315 |
|
lastTestCase = currentTestCase; |
316 |
|
}}}; |
317 |
< |
Thread thread = new Thread(checkForWedgedTest, "checkForWedgedTest"); |
317 |
> |
Thread thread = new Thread(wedgedTestDetector, "WedgedTestDetector"); |
318 |
|
thread.setDaemon(true); |
319 |
|
thread.start(); |
320 |
|
} |
358 |
|
// Never report first run of any test; treat it as a |
359 |
|
// warmup run, notably to trigger all needed classloading, |
360 |
|
if (i > 0) |
361 |
< |
System.out.printf("%n%s: %d%n", toString(), elapsedMillis); |
361 |
> |
System.out.printf("%s: %d%n", toString(), elapsedMillis); |
362 |
|
} |
363 |
|
} |
364 |
|
|
1087 |
|
} |
1088 |
|
} |
1089 |
|
|
1090 |
+ |
/** Returns true if thread info might be useful in a thread dump. */ |
1091 |
+ |
static boolean threadOfInterest(ThreadInfo info) { |
1092 |
+ |
final String name = info.getThreadName(); |
1093 |
+ |
String lockName; |
1094 |
+ |
if (name == null) |
1095 |
+ |
return true; |
1096 |
+ |
if (name.equals("Signal Dispatcher") |
1097 |
+ |
|| name.equals("WedgedTestDetector")) |
1098 |
+ |
return false; |
1099 |
+ |
if (name.equals("Reference Handler")) { |
1100 |
+ |
// Reference Handler stacktrace changed in JDK-8156500 |
1101 |
+ |
StackTraceElement[] stackTrace; String methodName; |
1102 |
+ |
if ((stackTrace = info.getStackTrace()) != null |
1103 |
+ |
&& stackTrace.length > 0 |
1104 |
+ |
&& (methodName = stackTrace[0].getMethodName()) != null |
1105 |
+ |
&& methodName.equals("waitForReferencePendingList")) |
1106 |
+ |
return false; |
1107 |
+ |
// jdk8 Reference Handler stacktrace |
1108 |
+ |
if ((lockName = info.getLockName()) != null |
1109 |
+ |
&& lockName.startsWith("java.lang.ref")) |
1110 |
+ |
return false; |
1111 |
+ |
} |
1112 |
+ |
if ((name.equals("Finalizer") || name.equals("Common-Cleaner")) |
1113 |
+ |
&& (lockName = info.getLockName()) != null |
1114 |
+ |
&& lockName.startsWith("java.lang.ref")) |
1115 |
+ |
return false; |
1116 |
+ |
if (name.startsWith("ForkJoinPool.commonPool-worker") |
1117 |
+ |
&& (lockName = info.getLockName()) != null |
1118 |
+ |
&& lockName.startsWith("java.util.concurrent.ForkJoinPool")) |
1119 |
+ |
return false; |
1120 |
+ |
return true; |
1121 |
+ |
} |
1122 |
+ |
|
1123 |
|
/** |
1124 |
|
* A debugging tool to print stack traces of most threads, as jstack does. |
1125 |
|
* Uninteresting threads are filtered out. |
1134 |
|
} |
1135 |
|
} |
1136 |
|
|
1100 |
– |
ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean(); |
1137 |
|
System.err.println("------ stacktrace dump start ------"); |
1138 |
< |
for (ThreadInfo info : threadMXBean.dumpAllThreads(true, true)) { |
1139 |
< |
final String name = info.getThreadName(); |
1140 |
< |
String lockName; |
1105 |
< |
if ("Signal Dispatcher".equals(name)) |
1106 |
< |
continue; |
1107 |
< |
if ("Reference Handler".equals(name) |
1108 |
< |
&& (lockName = info.getLockName()) != null |
1109 |
< |
&& lockName.startsWith("java.lang.ref.Reference$Lock")) |
1110 |
< |
continue; |
1111 |
< |
if (("Finalizer".equals(name) || "Common-Cleaner".equals(name)) |
1112 |
< |
&& (lockName = info.getLockName()) != null |
1113 |
< |
&& lockName.startsWith("java.lang.ref")) |
1114 |
< |
continue; |
1115 |
< |
if ("checkForWedgedTest".equals(name)) |
1116 |
< |
continue; |
1117 |
< |
System.err.print(info); |
1118 |
< |
} |
1138 |
> |
for (ThreadInfo info : THREAD_MXBEAN.dumpAllThreads(true, true)) |
1139 |
> |
if (threadOfInterest(info)) |
1140 |
> |
System.err.print(info); |
1141 |
|
System.err.println("------ stacktrace dump end ------"); |
1142 |
|
|
1143 |
|
if (sm != null) System.setSecurityManager(sm); |
1164 |
|
} |
1165 |
|
|
1166 |
|
/** |
1167 |
+ |
* Returns the thread's blocker's class name, if any, else null. |
1168 |
+ |
*/ |
1169 |
+ |
String blockerClassName(Thread thread) { |
1170 |
+ |
ThreadInfo threadInfo; LockInfo lockInfo; |
1171 |
+ |
if ((threadInfo = THREAD_MXBEAN.getThreadInfo(thread.getId(), 0)) != null |
1172 |
+ |
&& (lockInfo = threadInfo.getLockInfo()) != null) |
1173 |
+ |
return lockInfo.getClassName(); |
1174 |
+ |
return null; |
1175 |
+ |
} |
1176 |
+ |
|
1177 |
+ |
/** |
1178 |
|
* Checks that future.get times out, with the default timeout of |
1179 |
|
* {@code timeoutMillis()}. |
1180 |
|
*/ |
1473 |
|
} |
1474 |
|
|
1475 |
|
/** |
1476 |
+ |
* Returns a new started daemon Thread running the given action, |
1477 |
+ |
* wrapped in a CheckedRunnable. |
1478 |
+ |
*/ |
1479 |
+ |
Thread newStartedThread(Action action) { |
1480 |
+ |
return newStartedThread(checkedRunnable(action)); |
1481 |
+ |
} |
1482 |
+ |
|
1483 |
+ |
/** |
1484 |
|
* Waits for the specified time (in milliseconds) for the thread |
1485 |
|
* to terminate (using {@link Thread#join(long)}), else interrupts |
1486 |
|
* the thread (in the hope that it may terminate later) and fails. |
1527 |
|
} |
1528 |
|
} |
1529 |
|
|
1530 |
+ |
Runnable checkedRunnable(Action action) { |
1531 |
+ |
return new CheckedRunnable() { |
1532 |
+ |
public void realRun() throws Throwable { |
1533 |
+ |
action.run(); |
1534 |
+ |
}}; |
1535 |
+ |
} |
1536 |
+ |
|
1537 |
|
public abstract class ThreadShouldThrow extends Thread { |
1538 |
|
protected abstract void realRun() throws Throwable; |
1539 |
|
|