80 lines
2.6 KiB
Java
80 lines
2.6 KiB
Java
/*
|
|
* Copyright (c) 2024, 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.
|
|
*/
|
|
|
|
/*
|
|
* @test id=default
|
|
* @bug 8335269
|
|
* @summary Test that Thread.yield loop polls for safepoints
|
|
* @requires vm.continuations
|
|
* @library /test/lib
|
|
* @run junit/othervm ThreadPollOnYield
|
|
*/
|
|
|
|
/*
|
|
* @test id=c2
|
|
* @bug 8335269
|
|
* @summary Test that Thread.yield loop polls for safepoints
|
|
* @requires vm.continuations & vm.compMode != "Xcomp"
|
|
* @library /test/lib
|
|
* @run junit/othervm -Xcomp -XX:-TieredCompilation -XX:CompileCommand=inline,*::yield* -XX:CompileCommand=inline,*::*Yield ThreadPollOnYield
|
|
*/
|
|
|
|
import java.util.concurrent.atomic.AtomicBoolean;
|
|
|
|
import jdk.test.lib.thread.VThreadPinner;
|
|
import org.junit.jupiter.api.Test;
|
|
import static org.junit.jupiter.api.Assertions.*;
|
|
|
|
class ThreadPollOnYield {
|
|
static void foo(AtomicBoolean done) {
|
|
while (!done.get()) {
|
|
Thread.yield();
|
|
}
|
|
}
|
|
|
|
@Test
|
|
void testThreadYieldPolls() throws Exception {
|
|
AtomicBoolean done = new AtomicBoolean();
|
|
var vthread = Thread.ofVirtual().start(() -> {
|
|
VThreadPinner.runPinned(() -> foo(done));
|
|
});
|
|
Thread.sleep(5000);
|
|
done.set(true);
|
|
vthread.join();
|
|
|
|
System.out.println("First vthread done");
|
|
|
|
AtomicBoolean done2 = new AtomicBoolean();
|
|
vthread = Thread.ofVirtual().start(() -> {
|
|
VThreadPinner.runPinned(() -> foo(done2));
|
|
});
|
|
long start = System.currentTimeMillis();
|
|
while (System.currentTimeMillis() - start < 5000) {
|
|
Thread.sleep(250);
|
|
System.gc();
|
|
}
|
|
done2.set(true);
|
|
vthread.join();
|
|
}
|
|
}
|