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 import static jdk.test.lib.Asserts.assertEQ;
  25 import static jdk.test.lib.Asserts.assertFalse;
  26 import static jdk.test.lib.Asserts.assertTrue;
  27 import jdk.test.lib.DynamicVMOption;
  28 
  29 /**
  30  * @test TestDynMaxHeapFreeRatio
  31  * @bug 8028391
  32  * @summary Verify that MaxHeapFreeRatio flag is manageable
  33  * @library /testlibrary
  34  * @modules java.base/jdk.internal.misc
  35  * @modules java.management
  36  * @run main TestDynMaxHeapFreeRatio
  37  * @run main/othervm -XX:MinHeapFreeRatio=0 -XX:MaxHeapFreeRatio=100 TestDynMaxHeapFreeRatio
  38  * @run main/othervm -XX:MinHeapFreeRatio=10 -XX:MaxHeapFreeRatio=50 -XX:-UseAdaptiveSizePolicy TestDynMaxHeapFreeRatio
  39  * @run main/othervm -XX:MinHeapFreeRatio=10 -XX:MaxHeapFreeRatio=50 TestDynMaxHeapFreeRatio
  40  * @run main/othervm -XX:MinHeapFreeRatio=51 -XX:MaxHeapFreeRatio=52 TestDynMaxHeapFreeRatio
  41  * @run main/othervm -XX:MinHeapFreeRatio=75 -XX:MaxHeapFreeRatio=100 TestDynMaxHeapFreeRatio
  42  */
  43 public class TestDynMaxHeapFreeRatio {
  44 
  45     public static void main(String args[]) throws Exception {
  46 
  47         // low boundary value
  48         int minValue = DynamicVMOption.getInt("MinHeapFreeRatio");
  49         System.out.println("MinHeapFreeRatio= " + minValue);
  50 
  51         String badValues[] = {
  52             null,
  53             "",

  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 import static jdk.test.lib.Asserts.assertEQ;
  25 import static jdk.test.lib.Asserts.assertFalse;
  26 import static jdk.test.lib.Asserts.assertTrue;
  27 import jdk.test.lib.DynamicVMOption;
  28 
  29 /**
  30  * @test TestDynMaxHeapFreeRatio
  31  * @bug 8028391
  32  * @summary Verify that MaxHeapFreeRatio flag is manageable
  33  * @library /test/lib
  34  * @modules java.base/jdk.internal.misc
  35  * @modules java.management
  36  * @run main TestDynMaxHeapFreeRatio
  37  * @run main/othervm -XX:MinHeapFreeRatio=0 -XX:MaxHeapFreeRatio=100 TestDynMaxHeapFreeRatio
  38  * @run main/othervm -XX:MinHeapFreeRatio=10 -XX:MaxHeapFreeRatio=50 -XX:-UseAdaptiveSizePolicy TestDynMaxHeapFreeRatio
  39  * @run main/othervm -XX:MinHeapFreeRatio=10 -XX:MaxHeapFreeRatio=50 TestDynMaxHeapFreeRatio
  40  * @run main/othervm -XX:MinHeapFreeRatio=51 -XX:MaxHeapFreeRatio=52 TestDynMaxHeapFreeRatio
  41  * @run main/othervm -XX:MinHeapFreeRatio=75 -XX:MaxHeapFreeRatio=100 TestDynMaxHeapFreeRatio
  42  */
  43 public class TestDynMaxHeapFreeRatio {
  44 
  45     public static void main(String args[]) throws Exception {
  46 
  47         // low boundary value
  48         int minValue = DynamicVMOption.getInt("MinHeapFreeRatio");
  49         System.out.println("MinHeapFreeRatio= " + minValue);
  50 
  51         String badValues[] = {
  52             null,
  53             "",