Mercurial > hg > graal-compiler
annotate test/compiler/5057225/Test5057225.java @ 20505:8ba0078861d4
8047976: Ergonomics for GC thread counts should update the flags
Summary: Ergonomics updates flags for number of GC threads
Reviewed-by: tschatzl, jwilhelm
Contributed-by: sangheon.kim@oracle.com
author | jwilhelm |
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date | Sat, 27 Sep 2014 15:11:41 +0200 |
parents | c18cbe5936b8 |
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rev | line source |
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824 | 1 /* |
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6941466: Oracle rebranding changes for Hotspot repositories
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2 * Copyright (c) 2009, Oracle and/or its affiliates. All rights reserved. |
824 | 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 * | |
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6941466: Oracle rebranding changes for Hotspot repositories
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
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parents:
824
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20 * or visit www.oracle.com if you need additional information or have any |
c18cbe5936b8
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21 * questions. |
824 | 22 */ |
23 | |
24 /** | |
25 * @test | |
26 * @bug 5057225 | |
27 * @summary Remove useless I2L conversions | |
28 * | |
29 * @run main/othervm -Xcomp -XX:CompileOnly=Test5057225.doload Test5057225 | |
30 */ | |
31 | |
32 import java.net.URLClassLoader; | |
33 | |
34 public class Test5057225 { | |
35 static byte[] ba = new byte[] { -1 }; | |
36 static short[] sa = new short[] { -1 }; | |
37 static int[] ia = new int[] { -1 }; | |
38 | |
39 static final long[] BYTE_MASKS = { | |
40 0x0FL, | |
41 0x7FL, // 7-bit | |
42 0xFFL, | |
43 }; | |
44 | |
45 static final long[] SHORT_MASKS = { | |
46 0x000FL, | |
47 0x007FL, // 7-bit | |
48 0x00FFL, | |
49 0x0FFFL, | |
50 0x3FFFL, // 14-bit | |
51 0x7FFFL, // 15-bit | |
52 0xFFFFL, | |
53 }; | |
54 | |
55 static final long[] INT_MASKS = { | |
56 0x0000000FL, | |
57 0x0000007FL, // 7-bit | |
58 0x000000FFL, | |
59 0x00000FFFL, | |
60 0x00003FFFL, // 14-bit | |
61 0x00007FFFL, // 15-bit | |
62 0x0000FFFFL, | |
63 0x00FFFFFFL, | |
64 0x7FFFFFFFL, // 31-bit | |
65 0xFFFFFFFFL, | |
66 }; | |
67 | |
68 public static void main(String[] args) throws Exception { | |
69 for (int i = 0; i < BYTE_MASKS.length; i++) { | |
70 System.setProperty("value", "" + BYTE_MASKS[i]); | |
71 loadAndRunClass("Test5057225$loadUB2L"); | |
72 } | |
73 | |
74 for (int i = 0; i < SHORT_MASKS.length; i++) { | |
75 System.setProperty("value", "" + SHORT_MASKS[i]); | |
76 loadAndRunClass("Test5057225$loadUS2L"); | |
77 } | |
78 | |
79 for (int i = 0; i < INT_MASKS.length; i++) { | |
80 System.setProperty("value", "" + INT_MASKS[i]); | |
81 loadAndRunClass("Test5057225$loadUI2L"); | |
82 } | |
83 } | |
84 | |
85 static void check(long result, long expected) { | |
86 if (result != expected) | |
87 throw new InternalError(result + " != " + expected); | |
88 } | |
89 | |
90 static void loadAndRunClass(String classname) throws Exception { | |
91 Class cl = Class.forName(classname); | |
92 URLClassLoader apploader = (URLClassLoader) cl.getClassLoader(); | |
93 ClassLoader loader = new URLClassLoader(apploader.getURLs(), apploader.getParent()); | |
94 Class c = loader.loadClass(classname); | |
95 Runnable r = (Runnable) c.newInstance(); | |
96 r.run(); | |
97 } | |
98 | |
99 public static class loadUB2L implements Runnable { | |
100 static final long MASK; | |
101 static { | |
102 long value = 0; | |
103 try { | |
104 value = Long.decode(System.getProperty("value")); | |
105 } catch (Throwable e) {} | |
106 MASK = value; | |
107 } | |
108 | |
109 public void run() { check(doload(ba), MASK); } | |
110 static long doload(byte[] ba) { return ba[0] & MASK; } | |
111 } | |
112 | |
113 public static class loadUS2L implements Runnable { | |
114 static final long MASK; | |
115 static { | |
116 long value = 0; | |
117 try { | |
118 value = Long.decode(System.getProperty("value")); | |
119 } catch (Throwable e) {} | |
120 MASK = value; | |
121 } | |
122 | |
123 public void run() { check(doload(sa), MASK); } | |
124 static long doload(short[] sa) { return sa[0] & MASK; } | |
125 } | |
126 | |
127 public static class loadUI2L implements Runnable { | |
128 static final long MASK; | |
129 static { | |
130 long value = 0; | |
131 try { | |
132 value = Long.decode(System.getProperty("value")); | |
133 } catch (Throwable e) {} | |
134 MASK = value; | |
135 } | |
136 | |
137 public void run() { check(doload(ia), MASK); } | |
138 static long doload(int[] ia) { return ia[0] & MASK; } | |
139 } | |
140 } |