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 KeepAliveSoftReference
26 * @summary This test case uses a java.lang.ref.SoftReference referencing a class instance to keep a class alive.
27 * @library /testlibrary /../../test/lib /runtime/testlibrary
28 * @library classes
29 * @build KeepAliveSoftReference test.Empty
30 * @build ClassUnloadCommon
31 * @run main ClassFileInstaller sun.hotspot.WhiteBox
32 * sun.hotspot.WhiteBox$WhiteBoxPermission
33 * @run main/othervm -Xbootclasspath/a:. -Xmn8m -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI KeepAliveSoftReference
34 */
35
36 import java.lang.ref.SoftReference;
37 import sun.hotspot.WhiteBox;
38
39 /**
40 * Test that verifies that classes are not unloaded when specific types of references are kept to them.
41 */
42 public class KeepAliveSoftReference {
43 private static final String className = "test.Empty";
44 private static final WhiteBox wb = WhiteBox.getWhiteBox();
45
46 public static void main(String... args) throws Exception {
47 ClassLoader cl = ClassUnloadCommon.newClassLoader();
48 Class<?> c = cl.loadClass(className);
49 Object o = c.newInstance();
|
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24 /*
25 * @test KeepAliveSoftReference
26 * @summary This test case uses a java.lang.ref.SoftReference referencing a class instance to keep a class alive.
27 * @library /testlibrary /../../test/lib /runtime/testlibrary
28 * @library classes
29 * @build com.oracle.java.testlibrary.* KeepAliveSoftReference test.Empty
30 * @build ClassUnloadCommon
31 * @run main ClassFileInstaller sun.hotspot.WhiteBox
32 * sun.hotspot.WhiteBox$WhiteBoxPermission
33 * @run main/othervm -Xbootclasspath/a:. -Xmn8m -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI KeepAliveSoftReference
34 */
35
36 import java.lang.ref.SoftReference;
37 import sun.hotspot.WhiteBox;
38
39 /**
40 * Test that verifies that classes are not unloaded when specific types of references are kept to them.
41 */
42 public class KeepAliveSoftReference {
43 private static final String className = "test.Empty";
44 private static final WhiteBox wb = WhiteBox.getWhiteBox();
45
46 public static void main(String... args) throws Exception {
47 ClassLoader cl = ClassUnloadCommon.newClassLoader();
48 Class<?> c = cl.loadClass(className);
49 Object o = c.newInstance();
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