8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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 * @summary Stress test timed park when pinned
27 * @requires vm.debug != true
28 * @run main PinALot 500000
29 */
30
31 /*
32 * @test
33 * @requires vm.debug == true
34 * @run main/othervm/timeout=300 PinALot 200000
35 */
36
37 import java.time.Duration;
38 import java.time.Instant;
39 import java.util.concurrent.atomic.AtomicInteger;
40 import java.util.concurrent.locks.LockSupport;
41
42 public class PinALot {
43
44 static final Object lock = new Object();
45
46 public static void main(String[] args) throws Exception {
47 int iterations = 1_000_000;
48 if (args.length > 0) {
49 iterations = Integer.parseInt(args[0]);
50 }
51 final int ITERATIONS = iterations;
52
53 AtomicInteger count = new AtomicInteger();
54
55 Thread thread = Thread.ofVirtual().start(() -> {
56 synchronized (lock) {
57 while (count.incrementAndGet() < ITERATIONS) {
58 LockSupport.parkNanos(1);
59 }
60 }
61 });
62
63 boolean terminated;
64 do {
65 terminated = thread.join(Duration.ofSeconds(1));
66 System.out.println(Instant.now() + " => " + count.get());
67 } while (!terminated);
68
69 int countValue = count.get();
70 if (countValue != ITERATIONS) {
71 throw new RuntimeException("count = " + countValue);
72 }
73 }
74 }
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8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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 * @summary Stress test timed park when pinned
27 * @requires vm.debug != true
28 * @library /test/lib
29 * @run main/othervm --enable-native-access=ALL-UNNAMED PinALot 500000
30 */
31
32 /*
33 * @test
34 * @requires vm.debug == true
35 * @library /test/lib
36 * @run main/othervm/timeout=300 --enable-native-access=ALL-UNNAMED PinALot 200000
37 */
38
39 import java.time.Duration;
40 import java.time.Instant;
41 import java.util.concurrent.atomic.AtomicInteger;
42 import java.util.concurrent.locks.LockSupport;
43
44 import jdk.test.lib.thread.VThreadPinner;
45
46 public class PinALot {
47
48 public static void main(String[] args) throws Exception {
49 int iterations = 1_000_000;
50 if (args.length > 0) {
51 iterations = Integer.parseInt(args[0]);
52 }
53 final int ITERATIONS = iterations;
54
55 AtomicInteger count = new AtomicInteger();
56
57 Thread thread = Thread.ofVirtual().start(() -> {
58 VThreadPinner.runPinned(() -> {
59 while (count.incrementAndGet() < ITERATIONS) {
60 LockSupport.parkNanos(1);
61 }
62 });
63 });
64
65 boolean terminated;
66 do {
67 terminated = thread.join(Duration.ofSeconds(1));
68 System.out.println(Instant.now() + " => " + count.get());
69 } while (!terminated);
70
71 int countValue = count.get();
72 if (countValue != ITERATIONS) {
73 throw new RuntimeException("count = " + countValue);
74 }
75 }
76 }
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