test/gc/g1/TestSummarizeRSetStats.java
Print this page
*** 23,164 ****
/*
* @test TestSummarizeRSetStats.java
* @bug 8013895
* @library /testlibrary
! * @build TestSummarizeRSetStats
* @summary Verify output of -XX:+G1SummarizeRSetStats
* @run main TestSummarizeRSetStats
*
* Test the output of G1SummarizeRSetStats in conjunction with G1SummarizeRSetStatsPeriod.
*/
- import com.oracle.java.testlibrary.*;
- import java.lang.Thread;
- import java.util.ArrayList;
- import java.util.Arrays;
-
- class RunSystemGCs {
- // 4M size, both are directly allocated into the old gen
- static Object[] largeObject1 = new Object[1024 * 1024];
- static Object[] largeObject2 = new Object[1024 * 1024];
-
- static int[] temp;
-
- public static void main(String[] args) {
- // create some cross-references between these objects
- for (int i = 0; i < largeObject1.length; i++) {
- largeObject1[i] = largeObject2;
- }
-
- for (int i = 0; i < largeObject2.length; i++) {
- largeObject2[i] = largeObject1;
- }
-
- int numGCs = Integer.parseInt(args[0]);
-
- if (numGCs > 0) {
- // try to force a minor collection: the young gen is 4M, the
- // amount of data allocated below is roughly that (4*1024*1024 +
- // some header data)
- for (int i = 0; i < 1024 ; i++) {
- temp = new int[1024];
- }
- }
-
- for (int i = 0; i < numGCs - 1; i++) {
- System.gc();
- }
- }
- }
-
public class TestSummarizeRSetStats {
! public static String runTest(String[] additionalArgs, int numGCs) throws Exception {
! ArrayList<String> finalargs = new ArrayList<String>();
! String[] defaultArgs = new String[] {
! "-XX:+UseG1GC",
! "-Xmn4m",
! "-Xmx20m",
! "-XX:InitiatingHeapOccupancyPercent=100", // we don't want the additional GCs due to initial marking
! "-XX:+PrintGC",
! "-XX:+UnlockDiagnosticVMOptions",
! "-XX:G1HeapRegionSize=1M",
! };
!
! finalargs.addAll(Arrays.asList(defaultArgs));
! if (additionalArgs != null) {
! finalargs.addAll(Arrays.asList(additionalArgs));
}
! finalargs.add(RunSystemGCs.class.getName());
! finalargs.add(String.valueOf(numGCs));
! ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
! finalargs.toArray(new String[0]));
! OutputAnalyzer output = new OutputAnalyzer(pb.start());
! output.shouldHaveExitValue(0);
! String result = output.getStdout();
! return result;
! }
! private static void expectStatistics(String result, int expectedCumulative, int expectedPeriodic) throws Exception {
! int actualTotal = result.split("Concurrent RS processed").length - 1;
! int actualCumulative = result.split("Cumulative RS summary").length - 1;
! if (expectedCumulative != actualCumulative) {
! throw new Exception("Incorrect amount of RSet summaries at the end. Expected " + expectedCumulative + ", got " + actualCumulative);
! }
! if (expectedPeriodic != (actualTotal - actualCumulative)) {
! throw new Exception("Incorrect amount of per-period RSet summaries at the end. Expected " + expectedPeriodic + ", got " + (actualTotal - actualCumulative));
! }
! }
! public static void main(String[] args) throws Exception {
! String result;
! // no RSet statistics output
! result = runTest(null, 0);
! expectStatistics(result, 0, 0);
!
! // no RSet statistics output
! result = runTest(null, 2);
! expectStatistics(result, 0, 0);
!
! // no RSet statistics output
! result = runTest(new String[] { "-XX:G1SummarizeRSetStatsPeriod=1" }, 3);
! expectStatistics(result, 0, 0);
!
! // single RSet statistics output at the end
! result = runTest(new String[] { "-XX:+G1SummarizeRSetStats" }, 0);
! expectStatistics(result, 1, 0);
!
! // single RSet statistics output at the end
! result = runTest(new String[] { "-XX:+G1SummarizeRSetStats" }, 2);
! expectStatistics(result, 1, 0);
!
! // single RSet statistics output
! result = runTest(new String[] { "-XX:+G1SummarizeRSetStats", "-XX:G1SummarizeRSetStatsPeriod=1" }, 0);
! expectStatistics(result, 1, 0);
!
! // two times RSet statistics output
! result = runTest(new String[] { "-XX:+G1SummarizeRSetStats", "-XX:G1SummarizeRSetStatsPeriod=1" }, 1);
! expectStatistics(result, 1, 1);
!
! // four times RSet statistics output
! result = runTest(new String[] { "-XX:+G1SummarizeRSetStats", "-XX:G1SummarizeRSetStatsPeriod=1" }, 3);
! expectStatistics(result, 1, 3);
!
! // three times RSet statistics output
! result = runTest(new String[] { "-XX:+G1SummarizeRSetStats", "-XX:G1SummarizeRSetStatsPeriod=2" }, 3);
! expectStatistics(result, 1, 2);
!
! // single RSet statistics output
! result = runTest(new String[] { "-XX:+G1SummarizeRSetStats", "-XX:G1SummarizeRSetStatsPeriod=100" }, 3);
! expectStatistics(result, 1, 1);
}
}
--- 23,85 ----
/*
* @test TestSummarizeRSetStats.java
* @bug 8013895
* @library /testlibrary
! * @build TestSummarizeRSetStatsTools TestSummarizeRSetStats
* @summary Verify output of -XX:+G1SummarizeRSetStats
* @run main TestSummarizeRSetStats
*
* Test the output of G1SummarizeRSetStats in conjunction with G1SummarizeRSetStatsPeriod.
*/
public class TestSummarizeRSetStats {
! public static void main(String[] args) throws Exception {
! String result;
! if (!TestSummarizeRSetStatsTools.testingG1GC()) {
! return;
}
! // no remembered set summary output
! result = TestSummarizeRSetStatsTools.runTest(null, 0);
! TestSummarizeRSetStatsTools.expectRSetSummaries(result, 0, 0);
! // no remembered set summary output
! result = TestSummarizeRSetStatsTools.runTest(null, 2);
! TestSummarizeRSetStatsTools.expectRSetSummaries(result, 0, 0);
! // no remembered set summary output
! result = TestSummarizeRSetStatsTools.runTest(new String[] { "-XX:G1SummarizeRSetStatsPeriod=1" }, 3);
! TestSummarizeRSetStatsTools.expectRSetSummaries(result, 0, 0);
! // single remembered set summary output at the end
! result = TestSummarizeRSetStatsTools.runTest(new String[] { "-XX:+G1SummarizeRSetStats" }, 0);
! TestSummarizeRSetStatsTools.expectRSetSummaries(result, 1, 0);
! // single remembered set summary output at the end
! result = TestSummarizeRSetStatsTools.runTest(new String[] { "-XX:+G1SummarizeRSetStats" }, 2);
! TestSummarizeRSetStatsTools.expectRSetSummaries(result, 1, 0);
! // single remembered set summary output
! result = TestSummarizeRSetStatsTools.runTest(new String[] { "-XX:+G1SummarizeRSetStats", "-XX:G1SummarizeRSetStatsPeriod=1" }, 0);
! TestSummarizeRSetStatsTools.expectRSetSummaries(result, 1, 0);
! // two times remembered set summary output
! result = TestSummarizeRSetStatsTools.runTest(new String[] { "-XX:+G1SummarizeRSetStats", "-XX:G1SummarizeRSetStatsPeriod=1" }, 1);
! TestSummarizeRSetStatsTools.expectRSetSummaries(result, 1, 2);
! // four times remembered set summary output
! result = TestSummarizeRSetStatsTools.runTest(new String[] { "-XX:+G1SummarizeRSetStats", "-XX:G1SummarizeRSetStatsPeriod=1" }, 3);
! TestSummarizeRSetStatsTools.expectRSetSummaries(result, 1, 6);
!
! // three times remembered set summary output
! result = TestSummarizeRSetStatsTools.runTest(new String[] { "-XX:+G1SummarizeRSetStats", "-XX:G1SummarizeRSetStatsPeriod=2" }, 3);
! TestSummarizeRSetStatsTools.expectRSetSummaries(result, 1, 4);
! // single remembered set summary output
! result = TestSummarizeRSetStatsTools.runTest(new String[] { "-XX:+G1SummarizeRSetStats", "-XX:G1SummarizeRSetStatsPeriod=100" }, 3);
! TestSummarizeRSetStatsTools.expectRSetSummaries(result, 1, 2);
}
}