32 * java.management
33 */
34
35 import jdk.test.lib.ProcessTools;
36 import jdk.test.lib.OutputAnalyzer;
37 import java.util.LinkedList;
38
39 public class TestG1TraceEagerReclaimHumongousObjects {
40 public static void main(String[] args) throws Exception {
41 testGCLogs();
42 testHumongousObjectGCLogs();
43 }
44
45 private static void testGCLogs() throws Exception {
46
47 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC",
48 "-Xms128M",
49 "-Xmx128M",
50 "-Xmn16M",
51 "-XX:G1HeapRegionSize=1M",
52 "-XX:+PrintGC",
53 "-XX:+UnlockExperimentalVMOptions",
54 "-XX:G1LogLevel=finest",
55 "-XX:+G1TraceEagerReclaimHumongousObjects",
56 GCTest.class.getName());
57
58 OutputAnalyzer output = new OutputAnalyzer(pb.start());
59
60 // As G1EagerReclaimHumongousObjects is set(default), below logs should be displayed.
61 // And GCTest doesn't have humongous objects, so values should be zero.
62 output.shouldContain("[Humongous Reclaim");
63 output.shouldContain("[Humongous Total: 0]");
64 output.shouldContain("[Humongous Candidate: 0]");
65 output.shouldContain("[Humongous Reclaimed: 0]");
66
67 output.shouldHaveExitValue(0);
68 }
69
70 private static void testHumongousObjectGCLogs() throws Exception {
71 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC",
72 "-Xms128M",
73 "-Xmx128M",
74 "-Xmn16M",
75 "-XX:G1HeapRegionSize=1M",
76 "-XX:+PrintGC",
77 "-XX:+UnlockExperimentalVMOptions",
78 "-XX:G1LogLevel=finest",
79 "-XX:+G1TraceEagerReclaimHumongousObjects",
80 GCWithHumongousObjectTest.class.getName());
81
82 OutputAnalyzer output = new OutputAnalyzer(pb.start());
83
84 // As G1ReclaimDeadHumongousObjectsAtYoungGC is set(default), below logs should be displayed.
85 output.shouldContain("[Humongous Reclaim");
86 output.shouldContain("[Humongous Total");
87 output.shouldContain("[Humongous Candidate");
88 output.shouldContain("[Humongous Reclaimed");
89
90 // As G1TraceReclaimDeadHumongousObjectsAtYoungGC is set and GCWithHumongousObjectTest has humongous objects,
91 // these logs should be displayed.
92 output.shouldContain("Live humongous");
93 output.shouldContain("Dead humongous region");
94 output.shouldHaveExitValue(0);
95 }
96
97 static class GCTest {
98 private static byte[] garbage;
99
100 public static void main(String [] args) {
101 System.out.println("Creating garbage");
102 // create 128MB of garbage. This should result in at least one GC
103 for (int i = 0; i < 1024; i++) {
104 garbage = new byte[128 * 1024];
105 }
106 System.out.println("Done");
107 }
108 }
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32 * java.management
33 */
34
35 import jdk.test.lib.ProcessTools;
36 import jdk.test.lib.OutputAnalyzer;
37 import java.util.LinkedList;
38
39 public class TestG1TraceEagerReclaimHumongousObjects {
40 public static void main(String[] args) throws Exception {
41 testGCLogs();
42 testHumongousObjectGCLogs();
43 }
44
45 private static void testGCLogs() throws Exception {
46
47 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC",
48 "-Xms128M",
49 "-Xmx128M",
50 "-Xmn16M",
51 "-XX:G1HeapRegionSize=1M",
52 "-Xlog:gc+phases=trace",
53 "-XX:+UnlockExperimentalVMOptions",
54 GCTest.class.getName());
55
56 OutputAnalyzer output = new OutputAnalyzer(pb.start());
57
58 // As G1EagerReclaimHumongousObjects is set(default), below logs should be displayed.
59 // And GCTest doesn't have humongous objects, so values should be zero.
60 output.shouldContain("Humongous Reclaim");
61 output.shouldContain("Humongous Total: 0");
62 output.shouldContain("Humongous Candidate: 0");
63 output.shouldContain("Humongous Reclaimed: 0");
64
65 output.shouldHaveExitValue(0);
66 }
67
68 private static void testHumongousObjectGCLogs() throws Exception {
69 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC",
70 "-Xms128M",
71 "-Xmx128M",
72 "-Xmn16M",
73 "-XX:G1HeapRegionSize=1M",
74 "-Xlog:gc+phases=trace,gc+humongous=trace",
75 "-XX:+UnlockExperimentalVMOptions",
76 GCWithHumongousObjectTest.class.getName());
77
78 OutputAnalyzer output = new OutputAnalyzer(pb.start());
79
80 // As G1ReclaimDeadHumongousObjectsAtYoungGC is set(default), below logs should be displayed.
81 output.shouldContain("Humongous Reclaim");
82 output.shouldContain("Humongous Total");
83 output.shouldContain("Humongous Candidate");
84 output.shouldContain("Humongous Reclaimed");
85
86 // As G1TraceReclaimDeadHumongousObjectsAtYoungGC is set and GCWithHumongousObjectTest has humongous objects,
87 // these logs should be displayed.
88 output.shouldContain("Live humongous");
89 output.shouldContain("Dead humongous region");
90 output.shouldHaveExitValue(0);
91 }
92
93 static class GCTest {
94 private static byte[] garbage;
95
96 public static void main(String [] args) {
97 System.out.println("Creating garbage");
98 // create 128MB of garbage. This should result in at least one GC
99 for (int i = 0; i < 1024; i++) {
100 garbage = new byte[128 * 1024];
101 }
102 System.out.println("Done");
103 }
104 }
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