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comparison test/compiler/EscapeAnalysis/TestUnsafePutAddressNullObjMustNotEscape.java @ 17894:87b5e00100fe

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8038048: assert(null_obj->escape_state() == PointsToNode::NoEscape,etc) runThese -full Summary: use correct set_escape_state() method. Reviewed-by: kvn, iignatyev Contributed-by: Richard Reingruber <richard.reingruber@sap.com>
author kvn
date Wed, 16 Apr 2014 14:49:03 -0700
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17893:a163af774cb9 17894:87b5e00100fe
1 /*
2 * Copyright 2014 SAP AG. All Rights Reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24 /**
25 * @test
26 * @bug 8038048
27 * @summary assert(null_obj->escape_state() == PointsToNode::NoEscape,etc)
28 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:+DoEscapeAnalysis -XX:-TieredCompilation -Xbatch TestUnsafePutAddressNullObjMustNotEscape
29 * @author Richard Reingruber richard DOT reingruber AT sap DOT com
30 */
31
32 import java.lang.reflect.Field;
33 import sun.misc.Unsafe;
34
35 public class TestUnsafePutAddressNullObjMustNotEscape {
36
37 public static Unsafe usafe;
38 public static long mem;
39 public static long checksum;
40
41 public static void main(String[] args) throws Exception {
42 System.out.println("EXECUTING test.");
43
44 {
45 System.out.println("Acquiring sun.misc.Unsafe.theUnsafe using reflection.");
46 getUnsafe();
47 System.out.println("Allocating raw memory.");
48 mem = (usafe.allocateMemory(1024) + 8L) & ~7L;
49 System.out.println("Triggering JIT compilation of the test method");
50 triggerJitCompilationOfTestMethod();
51 }
52
53 System.out.println("SUCCESSFULLY passed test.");
54 }
55
56 public static void triggerJitCompilationOfTestMethod() {
57 long sum = 0;
58 for (int ii = 50000; ii >= 0; ii--) {
59 sum = testMethod();
60 }
61 checksum = sum;
62 }
63
64 public static class IDGen {
65 private static long id;
66 public long nextId() {
67 return id++;
68 }
69 }
70
71 public static long testMethod() {
72 // dummy alloc to trigger escape analysis
73 IDGen gen = new IDGen();
74 // StoreP of null_obj to raw mem triggers assertion in escape analysis
75 usafe.putAddress(mem, 0L);
76 return gen.nextId();
77 }
78
79 private static void getUnsafe() throws Exception {
80 Field field = sun.misc.Unsafe.class.getDeclaredField("theUnsafe");
81 field.setAccessible(true);
82 usafe = (sun.misc.Unsafe) field.get(null);
83 }
84 }