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 }
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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 }
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