jdk-24/test/jdk/com/sun/jdi/JdbLastErrorTest.java

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/*
 * @test
 * @bug 8292302
 * @summary Test persistence of native last error value under jdb (Windows)
 * @requires (os.family == "windows") & (vm.compMode != "Xcomp") & (vm.compMode != "Xint")
 * @library /test/lib
 * @enablePreview
 * @run main/othervm JdbLastErrorTest
 */

import jdk.test.lib.process.OutputAnalyzer;
import lib.jdb.JdbCommand;
import lib.jdb.JdbTest;

import java.lang.foreign.FunctionDescriptor;
import java.lang.foreign.Linker;
import java.lang.foreign.SymbolLookup;
import java.lang.foreign.ValueLayout;
import java.lang.invoke.MethodHandle;

class TestNativeLastError {

    static final int VALUE = 42;

    public static void main(String[] args) throws Throwable {
        testWindows();
    }

    private static void testWindows() throws Throwable {
        Linker linker = Linker.nativeLinker();
        System.loadLibrary("Kernel32");
        SymbolLookup lookup = SymbolLookup.loaderLookup();
        MethodHandle getLastError = linker.downcallHandle(
            lookup.find("GetLastError").orElseThrow(),
            FunctionDescriptor.of(ValueLayout.JAVA_INT));
        MethodHandle setLastError = linker.downcallHandle(
            lookup.find("SetLastError").orElseThrow(),
            FunctionDescriptor.ofVoid(ValueLayout.JAVA_INT));

        for (int i = 0; i < 10; i++) {
            setLastError.invoke(VALUE);
            int lastError = (int) getLastError.invoke();
            System.out.println(lastError);
            if (lastError != VALUE) {
                throw new RuntimeException("failed, lastError = " + lastError);
            }
        }
    }
}

public class JdbLastErrorTest extends JdbTest {

    public static void main(String argv[]) {
        LaunchOptions lo = new LaunchOptions(DEBUGGEE_CLASS);
        lo.addVMOptions("--enable-preview");
        new JdbLastErrorTest(lo).run();
    }

    private JdbLastErrorTest(LaunchOptions launchOptions) {
        super(launchOptions);
    }

    private static final String DEBUGGEE_CLASS = TestNativeLastError.class.getName();

    @Override
    protected void runCases() {
        // Simply run app within jdb.
        // App should finish and exit, or report last error mismatch on failure.
        JdbCommand runCommand = JdbCommand.run();
        runCommand.allowExit();
        jdb.command(runCommand);
        new OutputAnalyzer(jdb.getJdbOutput()).shouldMatch("The application exited");
        new OutputAnalyzer(jdb.getJdbOutput()).shouldNotMatch("failed, lastError = ");
    }
}