test/gc/g1/TestShrinkToOneRegion.java

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   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 TestShrinkToOneRegion.java
  26  * @bug 8013872

  27  * @summary Shrinking the heap down to one region used to hit an assert
  28  * @run main/othervm -XX:+UseG1GC -XX:G1HeapRegionSize=32m -Xmx256m TestShrinkToOneRegion
  29  *
  30  * Doing a System.gc() without having allocated many objects will shrink the heap.
  31  * With a large region size we will shrink the heap to one region.
  32  */
  33 public class TestShrinkToOneRegion {
  34     public static void main(String[] args) {
  35         System.gc();
  36     }
  37 }


   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 TestShrinkToOneRegion.java
  26  * @bug 8013872
  27  * @requires vm.gc=="G1" | vm.gc=="null"
  28  * @summary Shrinking the heap down to one region used to hit an assert
  29  * @run main/othervm -XX:+UseG1GC -XX:G1HeapRegionSize=32m -Xmx256m TestShrinkToOneRegion
  30  *
  31  * Doing a System.gc() without having allocated many objects will shrink the heap.
  32  * With a large region size we will shrink the heap to one region.
  33  */
  34 public class TestShrinkToOneRegion {
  35     public static void main(String[] args) {
  36         System.gc();
  37     }
  38 }