6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
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 * @bug 7038914
27 * @summary Verify that the reference handler does not die after an OOME allocating the InterruptedException object
28 * @run main/othervm -Xmx16M -XX:-UseTLAB OOMEInReferenceHandler
29 * @author peter.levart@gmail.com
30 */
31
32 import java.lang.ref.*;
33
34 public class OOMEInReferenceHandler {
35 static Object[] fillHeap() {
36 Object[] first = null, last = null;
37 int size = 1 << 20;
38 while (size > 0) {
39 try {
40 Object[] array = new Object[size];
41 if (first == null) {
42 first = array;
43 } else {
44 last[0] = array;
45 }
46 last = array;
90
91 // release waste & referent
92 waste = null;
93 referent = null;
94
95 // wait at most 10 seconds for success or failure
96 for (int i = 0; i < 20; i++) {
97 if (refQueue.poll() != null) {
98 // Reference Handler thread still working -> success
99 return;
100 }
101 System.gc();
102 Thread.sleep(500L); // wait a little to allow GC to do it's work before allocating objects
103 if (!referenceHandlerThread.isAlive()) {
104 // Reference Handler thread died -> failure
105 throw new Exception("Reference Handler thread died.");
106 }
107 }
108
109 // no sure answer after 10 seconds
110 throw new IllegalStateException("Reference Handler thread stuck.");
111 }
112 }
|
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
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 * @bug 7038914 8016341
27 * @summary Verify that the reference handler does not die after an OOME allocating the InterruptedException object
28 * @run main/othervm -Xmx16M -XX:-UseTLAB OOMEInReferenceHandler
29 * @author peter.levart@gmail.com
30 */
31
32 import java.lang.ref.*;
33
34 public class OOMEInReferenceHandler {
35 static Object[] fillHeap() {
36 Object[] first = null, last = null;
37 int size = 1 << 20;
38 while (size > 0) {
39 try {
40 Object[] array = new Object[size];
41 if (first == null) {
42 first = array;
43 } else {
44 last[0] = array;
45 }
46 last = array;
90
91 // release waste & referent
92 waste = null;
93 referent = null;
94
95 // wait at most 10 seconds for success or failure
96 for (int i = 0; i < 20; i++) {
97 if (refQueue.poll() != null) {
98 // Reference Handler thread still working -> success
99 return;
100 }
101 System.gc();
102 Thread.sleep(500L); // wait a little to allow GC to do it's work before allocating objects
103 if (!referenceHandlerThread.isAlive()) {
104 // Reference Handler thread died -> failure
105 throw new Exception("Reference Handler thread died.");
106 }
107 }
108
109 // no sure answer after 10 seconds
110 throw new IllegalStateException("Reference Handler thread stuck. weakRef.get(): " + weakRef.get());
111 }
112 }
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