119 lines
4.0 KiB
Java
119 lines
4.0 KiB
Java
/*
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* Copyright (c) 2021, 2023, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/*
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* @test id=default
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* @summary Test verifies that selfsuspend doesn' block unmount by VTMTDisabler
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* @library /test/lib
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* @compile SelfSuspendDisablerTest.java
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* @run main/othervm/native -agentlib:SelfSuspendDisablerTest SelfSuspendDisablerTest
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*/
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/*
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* @test id=no-vmcontinuations
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* @requires vm.continuations
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* @library /test/lib
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* @compile SelfSuspendDisablerTest.java
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* @run main/othervm/native -agentlib:SelfSuspendDisablerTest -XX:+UnlockExperimentalVMOptions -XX:-VMContinuations SelfSuspendDisablerTest
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*/
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public class SelfSuspendDisablerTest {
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static {
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System.loadLibrary("SelfSuspendDisablerTest");
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}
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// Tested JVM TI thread states
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static final int NEW = 0; // No bits are set
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static final int TERMINATED = 2; // JVMTI_THREAD_STATE_TERMINATED
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static final int RUNNABLE = 5; // JVMTI_THREAD_STATE_ALIVE & JVMTI_THREAD_STATE_RUNNABLE
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static final int SUSPENDED = 0x100005; // RUNNABLE & JVMTI_THREAD_STATE_SUSPENDED
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native static boolean isSuspended(Thread thread);
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native static void selfSuspend();
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native static void resume(Thread thread);
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native static void suspendAllVirtualThreads();
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native static void resumeAllVirtualThreads();
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native static int getThreadState(Thread thread);
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private static void sleep(long millis) {
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try {
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Thread.sleep(millis);
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} catch (InterruptedException ie) {
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// ignore InterruptedException
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}
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}
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private static void testJvmtiThreadState(Thread thread, int expectedState) {
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String kindStr = thread.isVirtual()? "virtual " : "platform";
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int state = getThreadState(thread);
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System.out.printf("Expected %s thread state: %06X got: %06X\n",
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kindStr, expectedState, state);
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if (state != expectedState) {
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throw new RuntimeException("Test FAILED: Unexpected thread state");
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}
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}
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public static void main(String argv[]) throws Exception {
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Thread t1 = Thread.ofPlatform().factory().newThread(() -> {
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testJvmtiThreadState(Thread.currentThread(), RUNNABLE);
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selfSuspend();
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});
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Thread t2 = Thread.ofVirtual().factory().newThread(() -> {
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testJvmtiThreadState(Thread.currentThread(), RUNNABLE);
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while(!isSuspended(t1)) {
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Thread.yield();
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}
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Thread.yield(); // provoke unmount
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testJvmtiThreadState(t1, SUSPENDED);
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resume(t1);
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suspendAllVirtualThreads();
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});
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testJvmtiThreadState(t1, NEW);
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testJvmtiThreadState(t2, NEW);
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t1.start();
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t2.start();
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while(!isSuspended(t2)) {
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sleep(100);
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}
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testJvmtiThreadState(t2, SUSPENDED);
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resumeAllVirtualThreads();
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t2.join();
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t1.join();
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testJvmtiThreadState(t1, TERMINATED);
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testJvmtiThreadState(t2, TERMINATED);
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}
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}
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