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test/gc/arguments/TestG1HeapRegionSize.java
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rev 8851 : [mq]: webrev.00
@@ -25,42 +25,59 @@
* @test TestG1HeapRegionSize
* @key gc
* @bug 8021879
* @summary Verify that the flag G1HeapRegionSize is updated properly
* @modules java.management/sun.management
- * @run main/othervm -Xmx64m TestG1HeapRegionSize 1048576
- * @run main/othervm -XX:G1HeapRegionSize=2m -Xmx64m TestG1HeapRegionSize 2097152
- * @run main/othervm -XX:G1HeapRegionSize=3m -Xmx64m TestG1HeapRegionSize 2097152
- * @run main/othervm -XX:G1HeapRegionSize=64m -Xmx256m TestG1HeapRegionSize 33554432
+ * @library /testlibrary
+ * @run main TestG1HeapRegionSize
*/
-import com.sun.management.HotSpotDiagnosticMXBean;
-import com.sun.management.VMOption;
-import java.lang.management.ManagementFactory;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
-public class TestG1HeapRegionSize {
+import java.util.ArrayList;
+import java.util.Arrays;
- public static void main(String[] args) {
- HotSpotDiagnosticMXBean diagnostic =
- ManagementFactory.getPlatformMXBean(HotSpotDiagnosticMXBean.class);
+import jdk.test.lib.*;
- String expectedValue = getExpectedValue(args);
- VMOption option = diagnostic.getVMOption("UseG1GC");
- if (option.getValue().equals("false")) {
- System.out.println("Skipping this test. It is only a G1 test.");
- return;
- }
+public class TestG1HeapRegionSize {
- option = diagnostic.getVMOption("G1HeapRegionSize");
- if (!expectedValue.equals(option.getValue())) {
- throw new RuntimeException("Wrong value for G1HeapRegionSize. Expected " + expectedValue + " but got " + option.getValue());
+ private static void checkG1HeapRegionSize(String[] flags, int expectedValue, int exitValue) throws Exception {
+ ArrayList<String> flagList = new ArrayList<String>();
+ flagList.addAll(Arrays.asList(flags));
+ flagList.add("-XX:+UseG1GC");
+ flagList.add("-XX:+PrintFlagsFinal");
+ flagList.add("-version");
+
+ ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(flagList.toArray(new String[0]));
+ OutputAnalyzer output = new OutputAnalyzer(pb.start());
+ output.shouldHaveExitValue(exitValue);
+
+ if (exitValue == 0) {
+ String stdout = output.getStdout();
+ //System.out.println(stdout);
+ int flagValue = getFlagValue("G1HeapRegionSize", stdout);
+ if (flagValue != expectedValue) {
+ throw new RuntimeException("Wrong value for G1HeapRegionSize. Expected " + expectedValue + " but got " + flagValue);
+ }
}
}
- private static String getExpectedValue(String[] args) {
- if (args.length != 1) {
- throw new RuntimeException("Wrong number of arguments. Expected 1 but got " + args.length);
+ private static int getFlagValue(String flag, String where) {
+ Matcher m = Pattern.compile(flag + "\\s+:?=\\s+\\d+").matcher(where);
+ if (!m.find()) {
+ throw new RuntimeException("Could not find value for flag " + flag + " in output string");
}
- return args[0];
+ String match = m.group();
+ return Integer.parseInt(match.substring(match.lastIndexOf(" ") + 1, match.length()));
}
+ public static void main(String args[]) throws Exception {
+ final int M = 1024 * 1024;
+
+ checkG1HeapRegionSize(new String[] { "-Xmx64m" /* default is 1m */ }, 1*M, 0);
+ checkG1HeapRegionSize(new String[] { "-Xmx64m", "-XX:G1HeapRegionSize=2m" }, 2*M, 0);
+ checkG1HeapRegionSize(new String[] { "-Xmx64m", "-XX:G1HeapRegionSize=3m" }, 2*M, 0);
+ checkG1HeapRegionSize(new String[] { "-Xmx256m", "-XX:G1HeapRegionSize=32m" }, 32*M, 0);
+ checkG1HeapRegionSize(new String[] { "-Xmx256m", "-XX:G1HeapRegionSize=64m" }, 32*M, 1);
+ }
}
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