53 private final static String PROMOTION_OUTSIDE_PLAB_NAME = EventNames.PromoteObjectOutsidePLAB;
54
55 // This value needs to match the command line option set above
56 private final static int MAX_TENURING_THRESHOLD = 5;
57
58 // Keep track of the collection count just before and after JFR recording
59 private static int startGCCount = 0;
60
61 // Dummy objects to keep things alive and assure allocation happens
62 public static Object dummy;
63 public static Object[] keepAlive = new Object[128];
64 public static Object[] age = new Object[128];
65
66 public static void test() throws Exception {
67 GarbageCollectorMXBean ycBean = null;
68
69 List<GarbageCollectorMXBean> gcBeans = ManagementFactory.getGarbageCollectorMXBeans();
70 for (GarbageCollectorMXBean gcBean : gcBeans) {
71 if ("PS Scavenge".equals(gcBean.getName())
72 || "G1 Young Generation".equals(gcBean.getName())
73 || ("ParNew".equals(gcBean.getName()))) {
74 ycBean = gcBean;
75 }
76
77 if (ycBean != null) {
78 break;
79 }
80 }
81
82 if (ycBean == null) {
83 assertNotNull(ycBean, "Test failed since the MXBean for the Young Collector could not be found.");
84 return; // To remove IDE warning
85 }
86
87 System.gc(); // Clear nusery before recording
88
89 // Get total GC count before recording
90 for (GarbageCollectorMXBean gcBean : gcBeans) {
91 startGCCount += gcBean.getCollectionCount();
92 }
93
94 Recording recording = new Recording();
95 recording.enable(PROMOTION_IN_NEW_PLAB_NAME);
96 recording.enable(PROMOTION_OUTSIDE_PLAB_NAME);
97 recording.start();
98
99 byte[] largeBytes = new byte[1024 * 10];
100 byte[] smallBytes = new byte[64];
101
102 // Some large strings to keep alive for tenuring
103 for (int i = 0; i < keepAlive.length / 2; i++) {
104 ThreadLocalRandom.current().nextBytes(largeBytes);
105 keepAlive[i] = new String(largeBytes);
106 }
107
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53 private final static String PROMOTION_OUTSIDE_PLAB_NAME = EventNames.PromoteObjectOutsidePLAB;
54
55 // This value needs to match the command line option set above
56 private final static int MAX_TENURING_THRESHOLD = 5;
57
58 // Keep track of the collection count just before and after JFR recording
59 private static int startGCCount = 0;
60
61 // Dummy objects to keep things alive and assure allocation happens
62 public static Object dummy;
63 public static Object[] keepAlive = new Object[128];
64 public static Object[] age = new Object[128];
65
66 public static void test() throws Exception {
67 GarbageCollectorMXBean ycBean = null;
68
69 List<GarbageCollectorMXBean> gcBeans = ManagementFactory.getGarbageCollectorMXBeans();
70 for (GarbageCollectorMXBean gcBean : gcBeans) {
71 if ("PS Scavenge".equals(gcBean.getName())
72 || "G1 Young Generation".equals(gcBean.getName())
73 || "G1 Young".equals(gcBean.getName())
74 || "ParNew".equals(gcBean.getName())) {
75 ycBean = gcBean;
76 }
77
78 if (ycBean != null) {
79 break;
80 }
81 }
82
83 if (ycBean == null) {
84 assertNotNull(ycBean, "Test failed since the MXBean for the Young Collector could not be found.");
85 return; // To remove IDE warning
86 }
87
88 System.gc(); // Clear nursery before recording
89
90 // Get total GC count before recording
91 for (GarbageCollectorMXBean gcBean : gcBeans) {
92 startGCCount += gcBean.getCollectionCount();
93 }
94
95 Recording recording = new Recording();
96 recording.enable(PROMOTION_IN_NEW_PLAB_NAME);
97 recording.enable(PROMOTION_OUTSIDE_PLAB_NAME);
98 recording.start();
99
100 byte[] largeBytes = new byte[1024 * 10];
101 byte[] smallBytes = new byte[64];
102
103 // Some large strings to keep alive for tenuring
104 for (int i = 0; i < keepAlive.length / 2; i++) {
105 ThreadLocalRandom.current().nextBytes(largeBytes);
106 keepAlive[i] = new String(largeBytes);
107 }
108
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