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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

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/*

 * @test TestOverloadCompileQueues

 * @bug 8163511

 * @summary Test overloading the C1 and C2 compile queues with tasks.

 * @run main/othervm -XX:-TieredCompilation -XX:CompileThreshold=2 -XX:CICompilerCount=1

 *                   compiler.classUnloading.methodUnloading.TestOverloadCompileQueues

 * @run main/othervm -XX:TieredCompileTaskTimeout=1000 -XX:CompileThresholdScaling=0.001 -XX:CICompilerCount=2

 *                   compiler.classUnloading.methodUnloading.TestOverloadCompileQueues

 */

package compiler.classUnloading.methodUnloading;

import java.lang.reflect.Method;

import java.net.URL;

import java.net.URLClassLoader;

public class TestOverloadCompileQueues {

    public static final int ITERS = 500; // Increase for longer stress testing

    // Some methods to fill up the compile queue

    public static void test0() { }

    public static void test1() { }

    public static void test2() { }

    public static void test3() { }

    public static void test4() { }

    public static void test5() { }

    public static void test6() { }

    public static void test7() { }

    public static void test8() { }

    public static void test9() { }

    public static void test10() { }

    public static void test11() { }

    public static void test12() { }

    public static void test13() { }

    public static void test14() { }

    public static void test15() { }

    public static void test16() { }

    public static void test17() { }

    public static void test18() { }

    public static void test19() { }

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

        Class<?> thisClass = TestOverloadCompileQueues.class;

        ClassLoader defaultLoader = thisClass.getClassLoader();

        URL classesDir = thisClass.getProtectionDomain().getCodeSource().getLocation();

        for (int i = 0; i < ITERS; ++i) {

            // Load test class with own class loader

            URLClassLoader myLoader = URLClassLoader.newInstance(new URL[] {classesDir}, defaultLoader.getParent());

            Class<?> testClass = Class.forName(thisClass.getCanonicalName(), true, myLoader);

            // Execute all test methods to trigger compilation and fill up compile queue

            for (int j = 1; j < 20; ++j) {

                Method method = testClass.getDeclaredMethod("test" + j);

                method.invoke(null);

                method.invoke(null);

            }

            // Unload dead classes from ealier iterations

            System.gc();

        }

    }

}