28 * lock attempt times out
29 */
30 import java.util.concurrent.locks.*;
31 import java.util.concurrent.*;
32
33 public class Bug6571733 {
34
35 void test(String[] args) throws Throwable {
36 test(true);
37 test(false);
38 }
39
40 void test(boolean fairness) throws Throwable {
41 final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fairness);
42
43 // obtain read lock
44 lock.readLock().lock();
45
46 Thread thread = new Thread() { public void run() {
47 try {
48 check (! lock.writeLock().tryLock(0, TimeUnit.DAYS));
49
50 lock.readLock().lock();
51 lock.readLock().unlock();
52 } catch (Throwable t) { unexpected(t); }}};
53
54 thread.start();
55 thread.join();
56 }
57
58 //--------------------- Infrastructure ---------------------------
59 volatile int passed = 0, failed = 0;
60 void pass() {passed++;}
61 void fail() {failed++; Thread.dumpStack();}
62 void fail(String msg) {System.err.println(msg); fail();}
63 void unexpected(Throwable t) {failed++; t.printStackTrace();}
64 void check(boolean cond) {if (cond) pass(); else fail();}
65 public static void main(String[] args) throws Throwable {
66 new Bug6571733().instanceMain(args);}
67 void instanceMain(String[] args) throws Throwable {
68 try {test(args);} catch (Throwable t) {unexpected(t);}
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28 * lock attempt times out
29 */
30 import java.util.concurrent.locks.*;
31 import java.util.concurrent.*;
32
33 public class Bug6571733 {
34
35 void test(String[] args) throws Throwable {
36 test(true);
37 test(false);
38 }
39
40 void test(boolean fairness) throws Throwable {
41 final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fairness);
42
43 // obtain read lock
44 lock.readLock().lock();
45
46 Thread thread = new Thread() { public void run() {
47 try {
48 check(! lock.writeLock().tryLock(0, TimeUnit.DAYS));
49
50 lock.readLock().lock();
51 lock.readLock().unlock();
52 } catch (Throwable t) { unexpected(t); }}};
53
54 thread.start();
55 thread.join();
56 }
57
58 //--------------------- Infrastructure ---------------------------
59 volatile int passed = 0, failed = 0;
60 void pass() {passed++;}
61 void fail() {failed++; Thread.dumpStack();}
62 void fail(String msg) {System.err.println(msg); fail();}
63 void unexpected(Throwable t) {failed++; t.printStackTrace();}
64 void check(boolean cond) {if (cond) pass(); else fail();}
65 public static void main(String[] args) throws Throwable {
66 new Bug6571733().instanceMain(args);}
67 void instanceMain(String[] args) throws Throwable {
68 try {test(args);} catch (Throwable t) {unexpected(t);}
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