142 lines
4.6 KiB
Java
142 lines
4.6 KiB
Java
/*
|
|
* Copyright (c) 2014, 2015, Oracle and/or its affiliates. All rights reserved.
|
|
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
|
|
*
|
|
* This code is free software; you can redistribute it and/or modify it
|
|
* under the terms of the GNU General Public License version 2 only, as
|
|
* published by the Free Software Foundation.
|
|
*
|
|
* This code is distributed in the hope that it will be useful, but WITHOUT
|
|
* 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).
|
|
*
|
|
* You should have received a copy of the GNU General Public License version
|
|
* 2 along with this work; if not, write to the Free Software Foundation,
|
|
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
*
|
|
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
|
|
* or visit www.oracle.com if you need additional information or have any
|
|
* questions.
|
|
*
|
|
*/
|
|
|
|
import java.io.BufferedInputStream;
|
|
import java.io.ByteArrayOutputStream;
|
|
import java.io.IOException;
|
|
import java.util.concurrent.Callable;
|
|
import java.util.Random;
|
|
|
|
import jdk.test.lib.Asserts;
|
|
import jdk.test.lib.ByteCodeLoader;
|
|
import jdk.test.lib.InfiniteLoop;
|
|
import jdk.test.lib.Utils;
|
|
import sun.hotspot.WhiteBox;
|
|
|
|
public final class Helper {
|
|
public static final WhiteBox WHITE_BOX = WhiteBox.getWhiteBox();
|
|
public static final Random RNG = Utils.getRandomInstance();
|
|
|
|
private static final long THRESHOLD = WHITE_BOX.getIntxVMFlag("CompileThreshold");
|
|
private static final String TEST_CASE_IMPL_CLASS_NAME = "Helper$TestCaseImpl";
|
|
private static byte[] CLASS_DATA;
|
|
static {
|
|
try {
|
|
CLASS_DATA = loadClassData(TEST_CASE_IMPL_CLASS_NAME);
|
|
} catch (IOException e) {
|
|
throw new Error("TESTBUG: cannot load class byte code", e);
|
|
}
|
|
}
|
|
|
|
private Helper() {
|
|
}
|
|
|
|
public static void startInfiniteLoopThread(Runnable action) {
|
|
startInfiniteLoopThread(action, 0L);
|
|
}
|
|
|
|
public static void startInfiniteLoopThread(Runnable action, long millis) {
|
|
Thread t = new Thread(new InfiniteLoop(action, millis));
|
|
t.setDaemon(true);
|
|
t.start();
|
|
}
|
|
|
|
public static int callMethod(Callable<Integer> callable, int expected) {
|
|
int result = 0;
|
|
for (int i = 0; i < THRESHOLD; ++i) {
|
|
try {
|
|
result = callable.call();
|
|
} catch (Exception e) {
|
|
throw new AssertionError(
|
|
"Exception occurred during test method execution", e);
|
|
}
|
|
Asserts.assertEQ(result, expected, "Method returns unexpected value");
|
|
}
|
|
return result;
|
|
}
|
|
|
|
private static byte[] loadClassData(String name) throws IOException {
|
|
try (BufferedInputStream in = new BufferedInputStream(
|
|
ClassLoader.getSystemResourceAsStream(name.replace(".", "/")
|
|
+ ".class"))) {
|
|
ByteArrayOutputStream result = new ByteArrayOutputStream();
|
|
byte[] buffer = new byte[1024];
|
|
int read;
|
|
while ((read = in.read(buffer)) != -1) {
|
|
result.write(buffer, 0, read);
|
|
}
|
|
return result.toByteArray();
|
|
}
|
|
}
|
|
|
|
public interface TestCase {
|
|
|
|
public static TestCase get() {
|
|
try {
|
|
Class clazz = ByteCodeLoader.load(
|
|
TEST_CASE_IMPL_CLASS_NAME, CLASS_DATA);
|
|
return (TestCase) clazz.newInstance();
|
|
} catch (ReflectiveOperationException e) {
|
|
throw new Error(String.format(
|
|
"TESTBUG: error while creating %s instance from reloaded class",
|
|
TEST_CASE_IMPL_CLASS_NAME), e);
|
|
}
|
|
}
|
|
|
|
Callable<Integer> getCallable();
|
|
int method();
|
|
int expectedValue();
|
|
}
|
|
|
|
public static class TestCaseImpl implements TestCase {
|
|
private static final int RETURN_VALUE = 42;
|
|
private static final int RECURSION_DEPTH = 10;
|
|
private volatile int i;
|
|
|
|
@Override
|
|
public Callable<Integer> getCallable() {
|
|
return () -> {
|
|
i = 0;
|
|
return method();
|
|
};
|
|
}
|
|
|
|
@Override
|
|
public int method() {
|
|
++i;
|
|
int result = RETURN_VALUE;
|
|
if (i < RECURSION_DEPTH) {
|
|
return result + method();
|
|
}
|
|
return result;
|
|
}
|
|
|
|
@Override
|
|
public int expectedValue() {
|
|
return RETURN_VALUE * RECURSION_DEPTH;
|
|
}
|
|
}
|
|
|
|
}
|