5 * This code is free software; you can redistribute it and/or modify it
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 * @ignore 8041506, 8041946, 8042051
26 * @test TestHumongousShrinkHeap
27 * @bug 8036025
28 * @summary Verify that heap shrinks after GC in the presence of fragmentation due to humongous objects
29 * @library /testlibrary
30 * @run main/othervm -XX:MinHeapFreeRatio=10 -XX:MaxHeapFreeRatio=50 -XX:+UseG1GC -XX:G1HeapRegionSize=1M -verbose:gc TestHumongousShrinkHeap
31 */
32
33 import java.lang.management.ManagementFactory;
34 import java.lang.management.MemoryUsage;
35 import java.util.ArrayList;
36 import java.util.List;
37 import sun.management.ManagementFactoryHelper;
38 import static com.oracle.java.testlibrary.Asserts.*;
39
40 public class TestHumongousShrinkHeap {
41
42 public static final String MIN_FREE_RATIO_FLAG_NAME = "MinHeapFreeRatio";
43 public static final String MAX_FREE_RATIO_FLAG_NAME = "MaxHeapFreeRatio";
44
45 private static final ArrayList<ArrayList<byte[]>> garbage = new ArrayList<>();
46 private static final int PAGE_SIZE = 1024 * 1024; // 1M
47 private static final int PAGES_NUM = 5;
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5 * This code is free software; you can redistribute it and/or modify it
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 TestHumongousShrinkHeap
26 * @bug 8036025 8056043
27 * @summary Verify that heap shrinks after GC in the presence of fragmentation due to humongous objects
28 * @library /testlibrary
29 * @run main/othervm -XX:MinHeapFreeRatio=10 -XX:MaxHeapFreeRatio=50 -XX:+UseG1GC -XX:G1HeapRegionSize=1M -verbose:gc TestHumongousShrinkHeap
30 */
31
32 import java.lang.management.ManagementFactory;
33 import java.lang.management.MemoryUsage;
34 import java.util.ArrayList;
35 import java.util.List;
36 import sun.management.ManagementFactoryHelper;
37 import static com.oracle.java.testlibrary.Asserts.*;
38
39 public class TestHumongousShrinkHeap {
40
41 public static final String MIN_FREE_RATIO_FLAG_NAME = "MinHeapFreeRatio";
42 public static final String MAX_FREE_RATIO_FLAG_NAME = "MaxHeapFreeRatio";
43
44 private static final ArrayList<ArrayList<byte[]>> garbage = new ArrayList<>();
45 private static final int PAGE_SIZE = 1024 * 1024; // 1M
46 private static final int PAGES_NUM = 5;
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