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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
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 *
 * 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).
 *
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 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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/*
 * @test
 * @summary Test verifies that selfsuspend doesn' block unmount by VTMTDisabler
 * @library /test/lib
 * @compile --enable-preview -source ${jdk.version} SelfSuspendDisablerTest.java
 * @run main/othervm/native --enable-preview -agentlib:SelfSuspendDisablerTest SelfSuspendDisablerTest
 */

public class SelfSuspendDisablerTest {

    static {
        System.loadLibrary("SelfSuspendDisablerTest");
    }

    native static boolean isSuspended(Thread thread);
    native static void selfSuspend();
    native static void resume(Thread thread);
    native static void suspendAllVirtualThreads();
    native static void resumeAllVirtualThreads();


    private static void sleep(long millis) {
        try {
            Thread.sleep(millis);
        } catch (InterruptedException ie) {
            // ignore InterruptedException
        }
    }

    public static void main(String argv[]) throws Exception {
        Thread t1 = Thread.ofPlatform().start(() -> {
            selfSuspend();
        });
        Thread t2 = Thread.ofVirtual().start(() -> {
            while(!isSuspended(t1)) {
              Thread.yield();
            }
            Thread.yield(); // provoke unmount
            resume(t1);
            suspendAllVirtualThreads();
        });

        while(!isSuspended(t2)) {
            sleep(100);
        }
        resumeAllVirtualThreads();

        t2.join();
        t1.join();
    }

}