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 TestG1HeapRegionSize 26 * @key gc 27 * @bug 8021879 28 * @summary Verify that the flag G1HeapRegionSize is updated properly 29 * @modules java.management/sun.management 30 * @run main/othervm -Xmx64m TestG1HeapRegionSize 1048576 31 * @run main/othervm -XX:G1HeapRegionSize=2m -Xmx64m TestG1HeapRegionSize 2097152 32 * @run main/othervm -XX:G1HeapRegionSize=3m -Xmx64m TestG1HeapRegionSize 2097152 33 * @run main/othervm -XX:G1HeapRegionSize=64m -Xmx256m TestG1HeapRegionSize 33554432 34 */ 35 36 import com.sun.management.HotSpotDiagnosticMXBean; 37 import com.sun.management.VMOption; 38 import java.lang.management.ManagementFactory; 39 40 public class TestG1HeapRegionSize { 41 42 public static void main(String[] args) { 43 HotSpotDiagnosticMXBean diagnostic = 44 ManagementFactory.getPlatformMXBean(HotSpotDiagnosticMXBean.class); 45 46 String expectedValue = getExpectedValue(args); 47 VMOption option = diagnostic.getVMOption("UseG1GC"); 48 if (option.getValue().equals("false")) { 49 System.out.println("Skipping this test. It is only a G1 test."); 50 return; 51 } 52 53 option = diagnostic.getVMOption("G1HeapRegionSize"); 54 if (!expectedValue.equals(option.getValue())) { 55 throw new RuntimeException("Wrong value for G1HeapRegionSize. Expected " + expectedValue + " but got " + option.getValue()); 56 } 57 } 58 59 private static String getExpectedValue(String[] args) { 60 if (args.length != 1) { 61 throw new RuntimeException("Wrong number of arguments. Expected 1 but got " + args.length); 62 } 63 return args[0]; 64 } 65 66 } | 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 TestG1HeapRegionSize 26 * @key gc 27 * @bug 8021879 28 * @summary Verify that the flag G1HeapRegionSize is updated properly 29 * @modules java.management/sun.management 30 * @library /testlibrary 31 * @run main TestG1HeapRegionSize 32 */ 33 34 import java.util.regex.Matcher; 35 import java.util.regex.Pattern; 36 37 import java.util.ArrayList; 38 import java.util.Arrays; 39 40 import jdk.test.lib.*; 41 42 public class TestG1HeapRegionSize { 43 44 private static void checkG1HeapRegionSize(String[] flags, int expectedValue, int exitValue) throws Exception { 45 ArrayList<String> flagList = new ArrayList<String>(); 46 flagList.addAll(Arrays.asList(flags)); 47 flagList.add("-XX:+UseG1GC"); 48 flagList.add("-XX:+PrintFlagsFinal"); 49 flagList.add("-version"); 50 51 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(flagList.toArray(new String[0])); 52 OutputAnalyzer output = new OutputAnalyzer(pb.start()); 53 output.shouldHaveExitValue(exitValue); 54 55 if (exitValue == 0) { 56 String stdout = output.getStdout(); 57 //System.out.println(stdout); 58 int flagValue = getFlagValue("G1HeapRegionSize", stdout); 59 if (flagValue != expectedValue) { 60 throw new RuntimeException("Wrong value for G1HeapRegionSize. Expected " + expectedValue + " but got " + flagValue); 61 } 62 } 63 } 64 65 private static int getFlagValue(String flag, String where) { 66 Matcher m = Pattern.compile(flag + "\\s+:?=\\s+\\d+").matcher(where); 67 if (!m.find()) { 68 throw new RuntimeException("Could not find value for flag " + flag + " in output string"); 69 } 70 String match = m.group(); 71 return Integer.parseInt(match.substring(match.lastIndexOf(" ") + 1, match.length())); 72 } 73 74 public static void main(String args[]) throws Exception { 75 final int M = 1024 * 1024; 76 77 checkG1HeapRegionSize(new String[] { "-Xmx64m" /* default is 1m */ }, 1*M, 0); 78 checkG1HeapRegionSize(new String[] { "-Xmx64m", "-XX:G1HeapRegionSize=2m" }, 2*M, 0); 79 checkG1HeapRegionSize(new String[] { "-Xmx64m", "-XX:G1HeapRegionSize=3m" }, 2*M, 0); 80 checkG1HeapRegionSize(new String[] { "-Xmx256m", "-XX:G1HeapRegionSize=32m" }, 32*M, 0); 81 checkG1HeapRegionSize(new String[] { "-Xmx256m", "-XX:G1HeapRegionSize=64m" }, 32*M, 1); 82 } 83 } |