mirror of
https://github.com/berkeleydb/je.git
synced 2024-10-05 05:36:55 +00:00
81 lines
2.6 KiB
Java
81 lines
2.6 KiB
Java
/*-
|
||
* Copyright (C) 2002, 2017, Oracle and/or its affiliates. All rights reserved.
|
||
*
|
||
* This file was distributed by Oracle as part of a version of Oracle Berkeley
|
||
* DB Java Edition made available at:
|
||
*
|
||
* http://www.oracle.com/technetwork/database/database-technologies/berkeleydb/downloads/index.html
|
||
*
|
||
* Please see the LICENSE file included in the top-level directory of the
|
||
* appropriate version of Oracle Berkeley DB Java Edition for a copy of the
|
||
* license and additional information.
|
||
*/
|
||
|
||
package com.sleepycat.utilint;
|
||
|
||
import static org.junit.Assert.assertEquals;
|
||
import static org.junit.Assert.assertTrue;
|
||
|
||
import java.util.logging.Logger;
|
||
|
||
import org.junit.Test;
|
||
|
||
import com.sleepycat.util.test.TestBase;
|
||
|
||
public class StatsTrackerTest extends TestBase {
|
||
|
||
enum TestType {GET, PUT, DELETE} ;
|
||
|
||
/*
|
||
* Test thread stack trace dumping
|
||
*/
|
||
@Test
|
||
public void testActivityCounter()
|
||
throws InterruptedException {
|
||
|
||
Integer maxNumThreadDumps = 3;
|
||
|
||
Logger logger = Logger.getLogger("test");
|
||
StatsTracker<TestType> tracker =
|
||
new StatsTracker<TestType>(TestType.values(),
|
||
logger,
|
||
2,
|
||
1,
|
||
maxNumThreadDumps,
|
||
100);
|
||
|
||
/*
|
||
* If there is only one concurrent thread, there should be no thread
|
||
* dumps.
|
||
*/
|
||
for (int i = 0; i < 20; i++) {
|
||
long startA = tracker.markStart();
|
||
Thread.sleep(10);
|
||
tracker.markFinish(TestType.GET, startA);
|
||
}
|
||
|
||
/* Did we see some thread dumps? */
|
||
assertEquals(0, tracker.getNumCompletedDumps() );
|
||
|
||
/*
|
||
* Simulate three concurrent threads. There should be automatic thread
|
||
* dumping, because the tracker is configured to dump when there are
|
||
* more than two concurrent threads with operations of > 1 ms.
|
||
*/
|
||
for (int i = 0; i < 20; i++) {
|
||
long startA = tracker.markStart();
|
||
long startB = tracker.markStart();
|
||
long startC = tracker.markStart();
|
||
Thread.sleep(10);
|
||
tracker.markFinish(TestType.GET, startA);
|
||
tracker.markFinish(TestType.GET, startB);
|
||
tracker.markFinish(TestType.GET, startC);
|
||
}
|
||
|
||
long expectedMaxDumps = maxNumThreadDumps;
|
||
|
||
/* Did we see some thread dumps? */
|
||
assertTrue(tracker.getNumCompletedDumps() > 1);
|
||
assertTrue(tracker.getNumCompletedDumps() <= expectedMaxDumps);
|
||
}
|
||
}
|