test/jdk/java/foreign/UpcallTestHelper.java

/*
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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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 *
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 * 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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import jdk.test.lib.process.OutputAnalyzer;
import jdk.test.lib.process.ProcessTools;
import jdk.test.lib.Utils;

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.TimeoutException;

import static org.testng.Assert.fail;

public class UpcallTestHelper extends NativeTestHelper {

    public OutputAnalyzer runInNewProcess(Class<?> target, boolean useSpec, String... programArgs) throws IOException, InterruptedException {
        return runInNewProcess(target, useSpec, List.of(), List.of(programArgs));
    }

    public OutputAnalyzer runInNewProcess(Class<?> target, boolean useSpec, List<String> vmArgs, List<String> programArgs) throws IOException, InterruptedException {
        assert !target.isArray();

        List<String> command = new ArrayList<>(List.of(
            "--enable-native-access=ALL-UNNAMED",
            "-Djava.library.path=" + System.getProperty("java.library.path"),
            "-Djdk.internal.foreign.UpcallLinker.USE_SPEC=" + useSpec
        ));
        command.addAll(vmArgs);
        command.add(target.getName());
        command.addAll(programArgs);

        try {
            ProcessBuilder pb = ProcessTools.createTestJavaProcessBuilder(command);
            // note that it's important to use ProcessTools.startProcess here since this makes sure output streams of the
            // fork don't fill up, which could make the process stall while writing to stdout/stderr
            Process process = ProcessTools.startProcess(target.getName(), pb, null, null, 1L, TimeUnit.MINUTES);
            OutputAnalyzer output = new OutputAnalyzer(process);
            output.outputTo(System.out);
            output.errorTo(System.err);
            return output;
        } catch (TimeoutException e) {
            fail("Timeout while waiting for forked process");
            return null;
        }
    }
}