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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
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* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
/* @test
* @bug 4076283
* @summary java.lang.ref.SoftReference should reliably prevent
* OutOfMemoryErrors
* @author Peter Jones
* @author Mark Reinhold
*/
/* If this test fails, an OutOfMemoryError will be thrown */
import java.lang.ref.SoftReference;
public class Bash {
static class TestReference extends SoftReference {
public static TestReference head;
public TestReference next;
public TestReference(Object referent) {
super(referent);
next = head;
head = this;
}
}
final static int NUM_BLOCKS = 2048;
final static int BLOCK_SIZE = 32768;
public static void main(String[] args) throws Exception {
for (int i = 0; i < NUM_BLOCKS; ++ i) {
TestReference ref = new TestReference(new byte[BLOCK_SIZE]);
}
int emptyCount = 0;
int fullCount = 0;
for (TestReference r = TestReference.head; r != null; r = r.next) {
if (r.get() == null) emptyCount++;
else fullCount++;
}
System.err.println(fullCount + " full, " + emptyCount + " empty ");
}
}