12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24 /*
25 * @test
26 * @bug 4530538
27 * @summary Basic unit test of ThreadInfo.getLockName()
28 * and ThreadInfo.getLockOwnerName()
29 * @author Mandy Chung
30 * @author Jaroslav Bachorik
31 *
32 * @library /lib/testlibrary
33 *
34 * @build jdk.testlibrary.*
35 * @run main/othervm Locks
36 */
37 import java.lang.management.*;
38 import java.util.Arrays;
39 import java.util.Optional;
40 import java.util.concurrent.Phaser;
41 import java.util.function.Predicate;
42 import jdk.testlibrary.LockFreeLogManager;
43
44 public class Locks {
45
46 private static final Object OBJA = new Object();
47 private static final Object OBJB = new Object();
48 private static final EnhancedWaiter OBJC = new EnhancedWaiter();
49 private static final ThreadMXBean TM = ManagementFactory.getThreadMXBean();
50 private static final LockFreeLogManager LOGGER = new LockFreeLogManager();
51
52 private static String getLockName(Object lock) {
53 if (lock == null) return null;
54
55 return lock.getClass().getName() + '@' +
56 Integer.toHexString(System.identityHashCode(lock));
57 }
58
59 private static void assertNoLock(Thread t) {
60 if (t == null) {
61 return;
62 }
63 Optional<ThreadInfo> result = Arrays.asList(
64 TM.getThreadInfo(TM.getAllThreadIds(), true, true)).
65 stream().
66 filter(tInfo -> (tInfo != null && tInfo.getLockOwnerName() != null)
67 ? tInfo.getLockOwnerName().equals(t.getName()) : false).
68 findAny();
69 if (result.isPresent()) {
70 throw new RuntimeException("Thread " + t.getName() + " is not "
71 + "supposed to be hold any lock. Currently owning lock : "
72 + result.get().getLockName());
73 }
74 }
75
76 /*
77 * Handy debug function to check if error condition is because of test code or not.
78 */
79 private static void printStackTrace(Thread thread) {
80 if (thread == null) {
81 return;
82 }
83 StackTraceElement[] stackTrace = thread.getStackTrace();
84 log("Stack dump : Thread -> " + thread.getName());
85 for (StackTraceElement stackTraceEl : stackTrace) {
86 log("\t" + stackTraceEl.toString());
87 }
88 }
|
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24 /*
25 * @test
26 * @bug 4530538
27 * @summary Basic unit test of ThreadInfo.getLockName()
28 * and ThreadInfo.getLockOwnerName()
29 * @author Mandy Chung
30 * @author Jaroslav Bachorik
31 *
32 * @library /lib/testlibrary /test/lib
33 *
34 * @build jdk.testlibrary.*
35 * @run main/othervm Locks
36 */
37 import java.lang.management.*;
38 import java.util.Arrays;
39 import java.util.Objects;
40 import java.util.Optional;
41 import java.util.concurrent.Phaser;
42 import java.util.function.Predicate;
43 import jdk.test.lib.log.LockFreeLogManager;
44
45 public class Locks {
46
47 private static final Object OBJA = new Object();
48 private static final Object OBJB = new Object();
49 private static final EnhancedWaiter OBJC = new EnhancedWaiter();
50 private static final ThreadMXBean TM = ManagementFactory.getThreadMXBean();
51 private static final LockFreeLogManager LOGGER = new LockFreeLogManager();
52
53 private static String getLockName(Object lock) {
54 if (lock == null) return null;
55
56 return lock.getClass().getName() + '@' +
57 Integer.toHexString(System.identityHashCode(lock));
58 }
59
60 private static void assertNoLock(Thread t) {
61 if (t == null) {
62 return;
63 }
64 String name = t.getName();
65 Optional<ThreadInfo> result = Arrays.stream(
66 TM.getThreadInfo(TM.getAllThreadIds(), true, true))
67 .filter(Objects::nonNull)
68 .filter(i -> name.equals(i.getLockOwnerName()))
69 .findAny();
70 if (result.isPresent()) {
71 throw new RuntimeException("Thread " + t.getName() + " is not "
72 + "supposed to be hold any lock. Currently owning lock : "
73 + result.get().getLockName());
74 }
75 }
76
77 /*
78 * Handy debug function to check if error condition is because of test code or not.
79 */
80 private static void printStackTrace(Thread thread) {
81 if (thread == null) {
82 return;
83 }
84 StackTraceElement[] stackTrace = thread.getStackTrace();
85 log("Stack dump : Thread -> " + thread.getName());
86 for (StackTraceElement stackTraceEl : stackTrace) {
87 log("\t" + stackTraceEl.toString());
88 }
89 }
|