Mercurial > hg > truffle
annotate agent/src/share/classes/sun/jvm/hotspot/HelloWorld.java @ 14909:4ca6dc0799b6
Backout jdk9 merge
author | Gilles Duboscq <duboscq@ssw.jku.at> |
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date | Tue, 01 Apr 2014 13:57:07 +0200 |
parents | 37be97a58393 |
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rev | line source |
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0 | 1 /* |
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7010849: 5/5 Extraneous javac source/target options when building sa-jdi
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2 * Copyright (c) 2000, 2011, Oracle and/or its affiliates. All rights reserved. |
0 | 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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20 * or visit www.oracle.com if you need additional information or have any |
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6941466: Oracle rebranding changes for Hotspot repositories
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
25 package sun.jvm.hotspot; | |
26 | |
27 import java.lang.reflect.*; | |
28 | |
29 public class HelloWorld { | |
30 private static String helloWorldString = "Hello, world!"; | |
31 private static volatile int helloWorldTrigger = 0; | |
32 private static final boolean useMethodInvoke = false; | |
33 private static Object lock = new Object(); | |
34 | |
35 public static void main(String[] args) { | |
36 int foo = a(); | |
37 | |
38 System.out.println("HelloWorld exiting. a() = " + foo); | |
39 } | |
40 | |
41 private static int a() { | |
42 return 1 + b(); | |
43 } | |
44 | |
45 private static int b() { | |
46 return 1 + c(); | |
47 } | |
48 | |
49 private static int c() { | |
50 return 1 + d("Hi"); | |
51 } | |
52 | |
53 private static int d(String x) { | |
54 System.out.println("HelloWorld.d() received \"" + x + "\" as argument"); | |
55 synchronized(lock) { | |
56 if (useMethodInvoke) { | |
57 try { | |
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andrew
parents:
1552
diff
changeset
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58 Method method = HelloWorld.class.getMethod("e"); |
0 | 59 Integer result = (Integer) method.invoke(null, new Object[0]); |
60 return result.intValue(); | |
61 } | |
62 catch (Exception e) { | |
63 throw new RuntimeException(e.toString()); | |
64 } | |
65 } else { | |
66 | |
67 int i = fib(10); // 89 | |
68 long l = i; | |
69 float f = i; | |
70 double d = i; | |
71 char c = (char) i; | |
72 short s = (short) i; | |
73 byte b = (byte) i; | |
74 | |
75 int ret = e(); | |
76 | |
77 System.out.println("Tenth Fibonacci number in all formats: " + | |
78 i + ", " + | |
79 l + ", " + | |
80 f + ", " + | |
81 d + ", " + | |
82 c + ", " + | |
83 s + ", " + | |
84 b); | |
85 | |
86 return ret; | |
87 } | |
88 } | |
89 } | |
90 | |
91 public static int e() { | |
92 System.out.println("Going to sleep..."); | |
93 | |
94 int i = 0; | |
95 | |
96 while (helloWorldTrigger == 0) { | |
97 if (++i == 1000000) { | |
98 System.gc(); | |
99 } | |
100 } | |
101 | |
102 System.out.println(helloWorldString); | |
103 | |
104 while (helloWorldTrigger != 0) { | |
105 } | |
106 | |
107 return i; | |
108 } | |
109 | |
110 // Tree-recursive implementation for test | |
111 public static int fib(int n) { | |
112 if (n < 2) { | |
113 return 1; | |
114 } | |
115 return fib(n - 1) + fib(n - 2); | |
116 } | |
117 } |