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comparison test/gc/metaspace/TestMetaspaceMemoryPool.java @ 12248:73d0d0218068

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8024718: Metaspace performance counters and memory pools should report the same data Reviewed-by: stefank, dholmes, coleenp
author ehelin
date Tue, 17 Sep 2013 20:59:07 +0200
parents 7944aba7ba41
children
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12247:fac394091d73 12248:73d0d0218068
20 * or visit www.oracle.com if you need additional information or have any 20 * or visit www.oracle.com if you need additional information or have any
21 * questions. 21 * questions.
22 */ 22 */
23 23
24 import java.util.List; 24 import java.util.List;
25 import java.lang.management.ManagementFactory; 25 import java.lang.management.*;
26 import java.lang.management.MemoryManagerMXBean; 26 import com.oracle.java.testlibrary.*;
27 import java.lang.management.MemoryPoolMXBean; 27 import static com.oracle.java.testlibrary.Asserts.*;
28 import java.lang.management.MemoryUsage;
29
30 import java.lang.management.RuntimeMXBean;
31 import java.lang.management.ManagementFactory;
32 28
33 /* @test TestMetaspaceMemoryPool 29 /* @test TestMetaspaceMemoryPool
34 * @bug 8000754 30 * @bug 8000754
35 * @summary Tests that a MemoryPoolMXBeans is created for metaspace and that a 31 * @summary Tests that a MemoryPoolMXBeans is created for metaspace and that a
36 * MemoryManagerMXBean is created. 32 * MemoryManagerMXBean is created.
33 * @library /testlibrary
37 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:-UseCompressedOops TestMetaspaceMemoryPool 34 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:-UseCompressedOops TestMetaspaceMemoryPool
38 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:-UseCompressedOops -XX:MaxMetaspaceSize=60m TestMetaspaceMemoryPool 35 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:-UseCompressedOops -XX:MaxMetaspaceSize=60m TestMetaspaceMemoryPool
39 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:+UseCompressedOops -XX:+UseCompressedClassPointers TestMetaspaceMemoryPool 36 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:+UseCompressedOops -XX:+UseCompressedClassPointers TestMetaspaceMemoryPool
40 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:+UseCompressedOops -XX:+UseCompressedClassPointers -XX:CompressedClassSpaceSize=60m TestMetaspaceMemoryPool 37 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:+UseCompressedOops -XX:+UseCompressedClassPointers -XX:CompressedClassSpaceSize=60m TestMetaspaceMemoryPool
41 */ 38 */
42 public class TestMetaspaceMemoryPool { 39 public class TestMetaspaceMemoryPool {
43 public static void main(String[] args) { 40 public static void main(String[] args) {
44 verifyThatMetaspaceMemoryManagerExists(); 41 verifyThatMetaspaceMemoryManagerExists();
45 verifyMemoryPool(getMemoryPool("Metaspace"), isFlagDefined("MaxMetaspaceSize"));
46 42
47 if (runsOn64bit()) { 43 boolean isMetaspaceMaxDefined = InputArguments.containsPrefix("-XX:MaxMetaspaceSize");
48 if (usesCompressedOops()) { 44 verifyMemoryPool(getMemoryPool("Metaspace"), isMetaspaceMaxDefined);
45
46 if (Platform.is64bit()) {
47 if (InputArguments.contains("-XX:+UseCompressedOops")) {
49 MemoryPoolMXBean cksPool = getMemoryPool("Compressed Class Space"); 48 MemoryPoolMXBean cksPool = getMemoryPool("Compressed Class Space");
50 verifyMemoryPool(cksPool, true); 49 verifyMemoryPool(cksPool, true);
51 } 50 }
52 } 51 }
53 }
54
55 private static boolean runsOn64bit() {
56 return !System.getProperty("sun.arch.data.model").equals("32");
57 }
58
59 private static boolean usesCompressedOops() {
60 return isFlagDefined("+UseCompressedOops");
61 }
62
63 private static boolean isFlagDefined(String name) {
64 RuntimeMXBean runtimeMxBean = ManagementFactory.getRuntimeMXBean();
65 List<String> args = runtimeMxBean.getInputArguments();
66 for (String arg : args) {
67 if (arg.startsWith("-XX:" + name)) {
68 return true;
69 }
70 }
71 return false;
72 } 52 }
73 53
74 private static void verifyThatMetaspaceMemoryManagerExists() { 54 private static void verifyThatMetaspaceMemoryManagerExists() {
75 List<MemoryManagerMXBean> managers = ManagementFactory.getMemoryManagerMXBeans(); 55 List<MemoryManagerMXBean> managers = ManagementFactory.getMemoryManagerMXBeans();
76 for (MemoryManagerMXBean manager : managers) { 56 for (MemoryManagerMXBean manager : managers) {
93 throw new RuntimeException("Expected to find a memory pool with name " + name); 73 throw new RuntimeException("Expected to find a memory pool with name " + name);
94 } 74 }
95 75
96 private static void verifyMemoryPool(MemoryPoolMXBean pool, boolean isMaxDefined) { 76 private static void verifyMemoryPool(MemoryPoolMXBean pool, boolean isMaxDefined) {
97 MemoryUsage mu = pool.getUsage(); 77 MemoryUsage mu = pool.getUsage();
98 assertDefined(mu.getInit(), "init"); 78 long init = mu.getInit();
99 assertDefined(mu.getUsed(), "used"); 79 long used = mu.getUsed();
100 assertDefined(mu.getCommitted(), "committed"); 80 long committed = mu.getCommitted();
81 long max = mu.getMax();
82
83 assertGTE(init, 0L);
84 assertGTE(used, init);
85 assertGTE(committed, used);
101 86
102 if (isMaxDefined) { 87 if (isMaxDefined) {
103 assertDefined(mu.getMax(), "max"); 88 assertGTE(max, committed);
104 } else { 89 } else {
105 assertUndefined(mu.getMax(), "max"); 90 assertEQ(max, -1L);
106 }
107 }
108
109 private static void assertDefined(long value, String name) {
110 assertTrue(value != -1, "Expected " + name + " to be defined");
111 }
112
113 private static void assertUndefined(long value, String name) {
114 assertEquals(value, -1, "Expected " + name + " to be undefined");
115 }
116
117 private static void assertEquals(long actual, long expected, String msg) {
118 assertTrue(actual == expected, msg);
119 }
120
121 private static void assertTrue(boolean condition, String msg) {
122 if (!condition) {
123 throw new RuntimeException(msg);
124 } 91 }
125 } 92 }
126 } 93 }