12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
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 /**
25 * @test
26 * @bug 8031320
27 * @summary Verify that RTMSpinLoopCount affects time spent
28 * between locking attempts.
29 * @library /test/lib /
30 * @modules java.base/jdk.internal.misc
31 * java.management
32 * @build sun.hotspot.WhiteBox
33 * @run driver ClassFileInstaller sun.hotspot.WhiteBox
34 * sun.hotspot.WhiteBox$WhiteBoxPermission
35 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions
36 * -XX:+WhiteBoxAPI
37 * compiler.rtm.locking.TestRTMSpinLoopCount
38 */
39
40 package compiler.rtm.locking;
41
42 import compiler.testlibrary.rtm.BusyLock;
43 import compiler.testlibrary.rtm.CompilableTest;
44 import compiler.testlibrary.rtm.RTMLockingStatistics;
45 import compiler.testlibrary.rtm.RTMTestBase;
46 import compiler.testlibrary.rtm.predicate.SupportedCPU;
47 import compiler.testlibrary.rtm.predicate.SupportedOS;
48 import compiler.testlibrary.rtm.predicate.SupportedVM;
49 import jdk.test.lib.Asserts;
50 import jdk.test.lib.process.OutputAnalyzer;
51 import jdk.test.lib.cli.CommandLineOptionTest;
52 import jdk.test.lib.cli.predicate.AndPredicate;
53
54 import java.util.List;
55
56 /**
57 * Test verifies that RTMSpinLoopCount increase time spent between retries
58 * by comparing amount of retries done with different RTMSpinLoopCount's values.
59 */
60 public class TestRTMSpinLoopCount extends CommandLineOptionTest {
61 private static final int LOCKING_TIME = 1000;
62 private static final int RTM_RETRY_COUNT = 1000;
63 private static final boolean INFLATE_MONITOR = true;
64 private static final long MAX_ABORTS = RTM_RETRY_COUNT + 1L;
65 private static final int[] SPIN_LOOP_COUNTS
66 = new int[] { 0, 100, 1_000, 1_000_000, 10_000_000 };
67
68 private TestRTMSpinLoopCount() {
69 super(new AndPredicate(new SupportedCPU(), new SupportedOS(), new SupportedVM()));
70 }
71
72 @Override
73 protected void runTestCases() throws Throwable {
74 long[] aborts = new long[TestRTMSpinLoopCount.SPIN_LOOP_COUNTS.length];
75 for (int i = 0; i < TestRTMSpinLoopCount.SPIN_LOOP_COUNTS.length; i++) {
76 aborts[i] = getAbortsCountOnLockBusy(
77 TestRTMSpinLoopCount.SPIN_LOOP_COUNTS[i]);
78 }
79
80 for (int i = 1; i < aborts.length; i++) {
81 Asserts.assertLTE(aborts[i], aborts[i - 1], "Increased spin loop "
82 + "count should not increase retries count.");
83 }
84 }
85
86 private long getAbortsCountOnLockBusy(int spinLoopCount) throws Throwable {
87 CompilableTest test = new BusyLock();
88
89 OutputAnalyzer outputAnalyzer = RTMTestBase.executeRTMTest(
90 test,
91 CommandLineOptionTest.prepareNumericFlag("RTMRetryCount",
92 TestRTMSpinLoopCount.RTM_RETRY_COUNT),
104
105 List<RTMLockingStatistics> statistics = RTMLockingStatistics.fromString(
106 test.getMethodWithLockName(), outputAnalyzer.getOutput());
107
108 Asserts.assertEQ(statistics.size(), 1,
109 "VM output should contain exactly one entry for method "
110 + test.getMethodWithLockName());
111
112 RTMLockingStatistics lock = statistics.get(0);
113
114 Asserts.assertLTE(lock.getTotalAborts(),
115 TestRTMSpinLoopCount.MAX_ABORTS, String.format("Total aborts "
116 + "count (%d) should be less or equal to %d",
117 lock.getTotalAborts(),
118 TestRTMSpinLoopCount.MAX_ABORTS));
119
120 return lock.getTotalAborts();
121 }
122
123 public static void main(String args[]) throws Throwable {
124 new TestRTMSpinLoopCount().test();
125 }
126 }
|
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
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 /**
25 * @test
26 * @bug 8031320
27 * @summary Verify that RTMSpinLoopCount affects time spent
28 * between locking attempts.
29 * @library /test/lib /
30 * @modules java.base/jdk.internal.misc
31 * java.management
32 * @requires vm.flavor == "server" & !vm.emulatedClient & vm.rtm.cpu & vm.rtm.os
33 * @build sun.hotspot.WhiteBox
34 * @run driver ClassFileInstaller sun.hotspot.WhiteBox
35 * sun.hotspot.WhiteBox$WhiteBoxPermission
36 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions
37 * -XX:+WhiteBoxAPI
38 * compiler.rtm.locking.TestRTMSpinLoopCount
39 */
40
41 package compiler.rtm.locking;
42
43 import compiler.testlibrary.rtm.BusyLock;
44 import compiler.testlibrary.rtm.CompilableTest;
45 import compiler.testlibrary.rtm.RTMLockingStatistics;
46 import compiler.testlibrary.rtm.RTMTestBase;
47 import jdk.test.lib.Asserts;
48 import jdk.test.lib.process.OutputAnalyzer;
49 import jdk.test.lib.cli.CommandLineOptionTest;
50
51 import java.util.List;
52
53 /**
54 * Test verifies that RTMSpinLoopCount increase time spent between retries
55 * by comparing amount of retries done with different RTMSpinLoopCount's values.
56 */
57 public class TestRTMSpinLoopCount {
58 private static final int LOCKING_TIME = 1000;
59 private static final int RTM_RETRY_COUNT = 1000;
60 private static final boolean INFLATE_MONITOR = true;
61 private static final long MAX_ABORTS = RTM_RETRY_COUNT + 1L;
62 private static final int[] SPIN_LOOP_COUNTS
63 = new int[] { 0, 100, 1_000, 1_000_000, 10_000_000 };
64
65 protected void runTestCases() throws Throwable {
66 long[] aborts = new long[TestRTMSpinLoopCount.SPIN_LOOP_COUNTS.length];
67 for (int i = 0; i < TestRTMSpinLoopCount.SPIN_LOOP_COUNTS.length; i++) {
68 aborts[i] = getAbortsCountOnLockBusy(
69 TestRTMSpinLoopCount.SPIN_LOOP_COUNTS[i]);
70 }
71
72 for (int i = 1; i < aborts.length; i++) {
73 Asserts.assertLTE(aborts[i], aborts[i - 1], "Increased spin loop "
74 + "count should not increase retries count.");
75 }
76 }
77
78 private long getAbortsCountOnLockBusy(int spinLoopCount) throws Throwable {
79 CompilableTest test = new BusyLock();
80
81 OutputAnalyzer outputAnalyzer = RTMTestBase.executeRTMTest(
82 test,
83 CommandLineOptionTest.prepareNumericFlag("RTMRetryCount",
84 TestRTMSpinLoopCount.RTM_RETRY_COUNT),
96
97 List<RTMLockingStatistics> statistics = RTMLockingStatistics.fromString(
98 test.getMethodWithLockName(), outputAnalyzer.getOutput());
99
100 Asserts.assertEQ(statistics.size(), 1,
101 "VM output should contain exactly one entry for method "
102 + test.getMethodWithLockName());
103
104 RTMLockingStatistics lock = statistics.get(0);
105
106 Asserts.assertLTE(lock.getTotalAborts(),
107 TestRTMSpinLoopCount.MAX_ABORTS, String.format("Total aborts "
108 + "count (%d) should be less or equal to %d",
109 lock.getTotalAborts(),
110 TestRTMSpinLoopCount.MAX_ABORTS));
111
112 return lock.getTotalAborts();
113 }
114
115 public static void main(String args[]) throws Throwable {
116 new TestRTMSpinLoopCount().runTestCases();
117 }
118 }
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