14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24 package MyPackage;
25
26 /**
27 * @test
28 * @summary Verifies the JVMTI Heap Monitor API
29 * @build Frame
30 * @compile HeapMonitorTest.java
31 * @run main/othervm/native -agentlib:HeapMonitor MyPackage.HeapMonitorTest
32 */
33
34 import java.io.PrintStream;
35
36 public class HeapMonitorTest {
37
38 static {
39 try {
40 System.loadLibrary("HeapMonitor");
41 } catch (UnsatisfiedLinkError ule) {
42 System.err.println("Could not load HeapMonitor library");
43 System.err.println("java.library.path: "
44 + System.getProperty("java.library.path"));
45 throw ule;
46 }
47 }
48
49 native static int checkFrames(Frame[] frames);
50 native static int enableSampling();
51
52 public static int cnt;
53 public static int g_tmp[];
54 public int array[];
55
56 public static int helper() {
57 int sum = 0;
58 // Let us assume that the array is 24 bytes of memory.
59 for (int i = 0; i < 127000 / 6; i++) {
60 int tmp[] = new int[1];
61 // Force it to be kept.
62 g_tmp = tmp;
63 sum += g_tmp[0];
64 }
65 return sum;
66 }
67
68 public static void wrapper() {
69 int sum = 0;
70 for (int j = 0; j < 1000; j++) {
71 sum += helper();
72 }
73 System.out.println(sum);
74 }
75
76 public static void main(String[] args) {
77 Frame[] frames = new Frame[3];
78 frames[0] = new Frame("helper", "()I", "HeapMonitorTest.java", 60);
79 frames[1] = new Frame("wrapper", "()V", "HeapMonitorTest.java", 71);
80 frames[2] = new Frame("main", "([Ljava/lang/String;)V", "HeapMonitorTest.java", 83);
81
82 enableSampling();
83 wrapper();
84
85 int status = checkFrames(frames);
86 if (status != 0) {
87 throw new RuntimeException("Non-zero status returned from the agent: " + status);
88 }
89 }
90 }
|
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24 package MyPackage;
25
26 /**
27 * @test
28 * @summary Verifies the JVMTI Heap Monitor API
29 * @build Frame
30 * @compile HeapMonitorTest.java
31 * @run main/othervm/native -agentlib:HeapMonitor MyPackage.HeapMonitorTest
32 */
33
34 public class HeapMonitorTest {
35
36 static {
37 try {
38 System.loadLibrary("HeapMonitor");
39 } catch (UnsatisfiedLinkError ule) {
40 System.err.println("Could not load HeapMonitor library");
41 System.err.println("java.library.path: "
42 + System.getProperty("java.library.path"));
43 throw ule;
44 }
45 }
46
47 private static int g_tmp[];
48
49 private native static int checkFrames(Frame[] frames);
50 private native static int enableSampling();
51
52 private static int helper() {
53 int sum = 0;
54 // Let us assume that the array is 24 bytes of memory.
55 for (int i = 0; i < 127000 / 6; i++) {
56 int tmp[] = new int[1];
57 // Force it to be kept.
58 g_tmp = tmp;
59 sum += g_tmp[0];
60 }
61 return sum;
62 }
63
64 private static void wrapper() {
65 int sum = 0;
66 for (int j = 0; j < 1000; j++) {
67 sum += helper();
68 }
69 System.out.println(sum);
70 }
71
72 public static void main(String[] args) {
73 Frame[] frames = new Frame[3];
74 frames[0] = new Frame("helper", "()I", "HeapMonitorTest.java", 56);
75 frames[1] = new Frame("wrapper", "()V", "HeapMonitorTest.java", 67);
76 frames[2] = new Frame("main", "([Ljava/lang/String;)V", "HeapMonitorTest.java", 79);
77
78 enableSampling();
79 wrapper();
80
81 int status = checkFrames(frames);
82 if (status != 0) {
83 throw new RuntimeException("Non-zero status returned from the agent: " + status);
84 }
85 }
86 }
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