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/*
* Copyright (c) 2003, 2018, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package nsk.jvmti.SuspendThreadList;
import java.io.PrintStream;
import nsk.share.*;
import nsk.share.jvmti.*;
public class suspendthrdlst002 extends DebugeeClass {
// load native library if required
static {
System.loadLibrary("suspendthrdlst002");
}
// run test from command line
public static void main(String argv[]) {
argv = nsk.share.jvmti.JVMTITest.commonInit(argv);
// JCK-compatible exit
System.exit(run(argv, System.out) + Consts.JCK_STATUS_BASE);
}
// run test from JCK-compatible environment
public static int run(String argv[], PrintStream out) {
return new suspendthrdlst002().runIt(argv, out);
}
/* =================================================================== */
// scaffold objects
ArgumentHandler argHandler = null;
Log log = null;
long timeout = 0;
int status = Consts.TEST_PASSED;
// constants
public static final int DEFAULT_THREADS_COUNT = 10;
// tested thread
suspendthrdlst002Thread threads[] = null;
int threadsCount = 0;
// run debuggee
public int runIt(String argv[], PrintStream out) {
argHandler = new ArgumentHandler(argv);
log = new Log(out, argHandler);
timeout = argHandler.getWaitTime() * 60 * 1000; // milliseconds
threadsCount = argHandler.findOptionIntValue("threads", DEFAULT_THREADS_COUNT);
// create tested threads
threads = new suspendthrdlst002Thread[threadsCount];
for (int i = 0; i < threadsCount; i++) {
threads[i] = new suspendthrdlst002Thread("TestedThread #" + i);
}
// run tested threads
log.display("Staring tested threads");
try {
for (int i = 0; i < threadsCount; i++) {
threads[i].start();
if (!threads[i].checkReady()) {
throw new Failure("Unable to prepare tested thread: " + threads[i]);
}
}
// testing sync
log.display("Sync: thread started");
status = checkStatus(status);
} finally {
// let threads to finish
for (int i = 0; i < threadsCount; i++) {
threads[i].letFinish();
}
}
// wait for thread to finish
log.display("Finishing tested threads");
try {
for (int i = 0; i < threadsCount; i++) {
threads[i].join();
}
} catch (InterruptedException e) {
throw new Failure(e);
}
// testing sync
log.display("Sync: thread finished");
status = checkStatus(status);
return status;
}
}
/* =================================================================== */
// basic class for tested threads
class suspendthrdlst002Thread extends Thread {
private volatile boolean threadReady = false;
private volatile boolean shouldFinish = false;
// make thread with specific name
public suspendthrdlst002Thread(String name) {
super(name);
}
// run thread continuously
public void run() {
// run in a loop
threadReady = true;
int i = 0;
int n = 1000;
while (!shouldFinish) {
if (n <= 0) {
n = 1000;
}
if (i > n) {
i = 0;
n = n - 1;
}
i = i + 1;
Thread.yield();
}
}
// check if thread is ready
public boolean checkReady() {
try {
while (!threadReady) {
sleep(1000);
}
} catch (InterruptedException e) {
throw new Failure("Interruption while preparing tested thread: \n\t" + e);
}
return threadReady;
}
// let thread to finish
public void letFinish() {
shouldFinish = true;
}
}
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