DynamicCodeGeneratedTest.java

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/*
 * @test
 * @bug 8212155
 * @summary Test concurrent enabling and posting of DynamicCodeGenerated events.
 * @requires vm.jvmti
 * @library /test/lib
 * @run main/othervm/native -agentlib:DynamicCodeGenerated DynamicCodeGeneratedTest
 */

import java.lang.ref.Reference;

public class DynamicCodeGeneratedTest {
    static {
        System.loadLibrary("DynamicCodeGenerated");
    }
    public static native void changeEventNotificationMode();

    public static void main(String[] args) {
        // Try to enable DynamicCodeGenerated event while it is posted
        // using JvmtiDynamicCodeEventCollector from VtableStubs::find_stub
        Thread t = new Thread(() -> {
            changeEventNotificationMode();
        });
        t.setDaemon(true);
        t.start();

        for (int i = 0; i < 2000; i++) {
            new Thread(() -> {
                String result = "string" + System.currentTimeMillis();
                Reference.reachabilityFence(result);
            }).start();
        }
    }
}