96 lines
3.3 KiB
Java
96 lines
3.3 KiB
Java
/*
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* Copyright (c) 2003, 2022, 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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import java.io.*;
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/*
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* @test
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*
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* @summary converted from VM Testbase nsk/jvmti/SingleStep/singlestep001.
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* VM Testbase keywords: [quick, jpda, jvmti, onload_only_caps, noras]
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* VM Testbase readme:
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* DESCRIPTION
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* This test exercises the JVMTI event SingleStep.
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* It verifies that this event can be enabled and disabled during
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* program execution.
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* The test works as follows. Breakpoint is set at special method
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* 'bpMethod()'. Upon reaching the breakpoint, agent enables SingleStep
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* event generation. All the received events are counted. When the
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* method 'bpMethod()' is leaved and accordingly, the program returns
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* to the calling method 'runThis()', the agent disables the event
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* generation.
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* At least one SingleStep event must be received for the each method
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* mentioned above. Also after disabling the event no more events
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* must be received.
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* COMMENTS
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*
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* @requires vm.continuations
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* @library /test/lib
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* @compile --enable-preview -source ${jdk.version} singlestep01.java
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* @run main/othervm/native --enable-preview -agentlib:singlestep01 singlestep01
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*/
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public class singlestep01 {
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static {
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System.loadLibrary("singlestep01");
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}
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static volatile int result;
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native int check();
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public static void main(String[] argv) throws Exception {
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Thread thread = Thread.ofPlatform().start(() -> {
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result = new singlestep01().runThis();
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});
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thread.join();
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if (result != 0) {
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throw new RuntimeException("Unexpected status: " + result);
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}
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thread = Thread.ofVirtual().start(() -> {
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result = new singlestep01().runThis();
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});
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thread.join();
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if (result != 0) {
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throw new RuntimeException("Unexpected status: " + result);
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}
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}
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private int runThis() {
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Thread.currentThread().setName("singlestep01Thr");
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System.out.println("\nReaching a breakpoint method ...\n");
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bpMethod();
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System.out.println("The breakpoint method leaved ...");
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return check();
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}
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/**
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* dummy method used only to reach breakpoint set in the agent
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*/
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private void bpMethod() {
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int dummyVar = 0;
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}
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}
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