/*
* Copyright ( c ) 2017 , 2018 , Red Hat , Inc . 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 .
*/
package gc.epsilon;
/**
* @ test TestObjects
* @ key randomness
* @ requires vm . gc . Epsilon
* @ summary Epsilon is able to allocate objects , and does not corrupt their state
* @ library / test / lib
*
* @ run main / othervm - XX : + UseTLAB - Xmx256m
* - XX : + UnlockExperimentalVMOptions - XX : + UseEpsilonGC
* gc . epsilon . TestObjects
*
* @ run main / othervm - XX : + UseTLAB - Xmx256m
* - Xint
* - XX : + UnlockExperimentalVMOptions - XX : + UseEpsilonGC
* gc . epsilon . TestObjects
*
* @ run main / othervm - XX : + UseTLAB - Xmx256m
* - Xbatch - Xcomp - XX : TieredStopAtLevel = 1
* - XX : + UnlockExperimentalVMOptions - XX : + UseEpsilonGC
* gc . epsilon . TestObjects
*
* @ run main / othervm - XX : + UseTLAB - Xmx256m
* - Xbatch - Xcomp - XX : - TieredCompilation
* - XX : + UnlockExperimentalVMOptions - XX : + UseEpsilonGC
* gc . epsilon . TestObjects
*
* @ run main / othervm - XX : - UseTLAB - Xmx256m
* - XX : + UnlockExperimentalVMOptions - XX : + UseEpsilonGC
* gc . epsilon . TestObjects
*
* @ run main / othervm - XX : - UseTLAB - Xmx256m
* - Xint
* - XX : + UnlockExperimentalVMOptions - XX : + UseEpsilonGC
* gc . epsilon . TestObjects
*
* @ run main / othervm - XX : - UseTLAB - Xmx256m
* - Xbatch - Xcomp - XX : TieredStopAtLevel = 1
* - XX : + UnlockExperimentalVMOptions - XX : + UseEpsilonGC
* gc . epsilon . TestObjects
*
* @ run main / othervm - XX : - UseTLAB - Xmx256m
* - Xbatch - Xcomp - XX : - TieredCompilation
* - XX : + UnlockExperimentalVMOptions - XX : + UseEpsilonGC
* gc . epsilon . TestObjects
*/
import java.util.Random;
import jdk.test.lib.Utils;
public class TestObjects {
static int COUNT = Integer.getInteger("count" , 1 _000 _000 ); // ~24 MB allocation
static MyObject[] arr;
public static void main(String[] args) throws Exception {
Random r = Utils.getRandomInstance();
arr = new MyObject[COUNT];
for (int c = 0 ; c < COUNT; c++) {
arr[c] = new MyObject(r.nextInt());
}
r = new Random(Utils.SEED);
for (int c = 0 ; c < COUNT; c++) {
int expected = r.nextInt();
int actual = arr[c].id();
if (expected != actual) {
throw new IllegalStateException("Failure: expected = " + expected + ", actual = " + actual);
}
}
}
public static class MyObject {
int id;
public MyObject(int id) {
this .id = id;
}
public int id() {
return id;
}
}
}
Messung V0.5 in Prozent C=93 H=90 G=91
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