test/hotspot/jtreg/runtime/appcds/jvmti/ClassFileLoadHookTest.java

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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * 2 along with this work; if not, write to the Free Software Foundation,
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/*
 * @test
 * @summary Test jvmti class file loader hook interaction with AppCDS
 * @library /test/lib /test/hotspot/jtreg/runtime/appcds
 * @requires vm.cds
 * @modules java.base/jdk.internal.misc
 *          jdk.jartool/sun.tools.jar
 *          java.management
 * @build ClassFileLoadHook
 * @run main/othervm/native ClassFileLoadHookTest
 */


import jdk.test.lib.Asserts;
import jdk.test.lib.cds.CDSOptions;
import jdk.test.lib.process.OutputAnalyzer;
import jdk.test.lib.process.ProcessTools;


public class ClassFileLoadHookTest {
    public static String sharedClasses[] = {
        "ClassFileLoadHook",
        "ClassFileLoadHook$TestCaseId",
        "ClassFileLoadHook$1",
        "LoadMe"
    };

    public static void main(String[] args) throws Exception {
        String wbJar =
            ClassFileInstaller.writeJar("WhiteBox.jar", "sun.hotspot.WhiteBox");
        String appJar =
            ClassFileInstaller.writeJar("ClassFileLoadHook.jar", sharedClasses);
        String useWb = "-Xbootclasspath/a:" + wbJar;

        // First, run the test class directly, w/o sharing, as a baseline reference
        ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
                "-XX:+UnlockDiagnosticVMOptions",
                "-XX:+WhiteBoxAPI",
                useWb,
                "-agentlib:SimpleClassFileLoadHook=LoadMe,beforeHook,after_Hook",
                "ClassFileLoadHook",
                "" + ClassFileLoadHook.TestCaseId.SHARING_OFF_CFLH_ON);
        TestCommon.executeAndLog(pb, "no-sharing").shouldHaveExitValue(0);

        // Run with AppCDS, but w/o CFLH - second baseline
        TestCommon.testDump(appJar, sharedClasses, useWb);
        OutputAnalyzer out = TestCommon.exec(appJar,
                "-XX:+UnlockDiagnosticVMOptions",
                "-XX:+WhiteBoxAPI", useWb,
                "ClassFileLoadHook",
                "" + ClassFileLoadHook.TestCaseId.SHARING_ON_CFLH_OFF);

        TestCommon.checkExec(out);


        // Now, run with AppCDS with -Xshare:auto and CFLH
        out = TestCommon.execAuto("-cp", appJar,
                "-XX:+UnlockDiagnosticVMOptions",
                "-XX:+WhiteBoxAPI", useWb,
                "-agentlib:SimpleClassFileLoadHook=LoadMe,beforeHook,after_Hook",
                "ClassFileLoadHook",
                "" + ClassFileLoadHook.TestCaseId.SHARING_AUTO_CFLH_ON);

        CDSOptions opts = (new CDSOptions()).setXShareMode("auto");
        TestCommon.checkExec(out, opts);

        // Now, run with AppCDS -Xshare:on and CFLH
        out = TestCommon.exec(appJar,
                "-XX:+UnlockDiagnosticVMOptions",
                "-XX:+WhiteBoxAPI", useWb,
                "-agentlib:SimpleClassFileLoadHook=LoadMe,beforeHook,after_Hook",
                "ClassFileLoadHook",
                "" + ClassFileLoadHook.TestCaseId.SHARING_ON_CFLH_ON);
        TestCommon.checkExec(out);
    }
}