Mercurial > hg > graal-compiler
annotate src/share/vm/ci/ciConstant.hpp @ 6885:685df3c6f84b
7045397: NPG: Add freelists to class loader arenas.
Reviewed-by: coleenp, stefank, jprovino, ohair
author | jmasa |
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date | Tue, 18 Sep 2012 23:35:42 -0700 |
parents | f6f3bb0ee072 |
children | edb5ab0f3fe5 |
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0 | 1 /* |
3939 | 2 * Copyright (c) 1999, 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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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #ifndef SHARE_VM_CI_CICONSTANT_HPP |
26 #define SHARE_VM_CI_CICONSTANT_HPP | |
27 | |
28 #include "ci/ciClassList.hpp" | |
29 #include "ci/ciNullObject.hpp" | |
30 | |
0 | 31 // ciConstant |
32 // | |
33 // This class represents a constant value. | |
34 class ciConstant VALUE_OBJ_CLASS_SPEC { | |
3939 | 35 friend class VMStructs; |
0 | 36 private: |
37 friend class ciEnv; | |
38 friend class ciField; | |
39 | |
40 BasicType _type; | |
41 union { | |
42 jint _int; | |
43 jlong _long; | |
44 jint _long_half[2]; | |
45 jfloat _float; | |
46 jdouble _double; | |
47 ciObject* _object; | |
48 } _value; | |
49 | |
50 public: | |
51 | |
52 ciConstant() { | |
53 _type = T_ILLEGAL; _value._long = -1; | |
54 } | |
55 ciConstant(BasicType type, jint value) { | |
56 assert(type != T_LONG && type != T_DOUBLE && type != T_FLOAT, | |
57 "using the wrong ciConstant constructor"); | |
58 _type = type; _value._int = value; | |
59 } | |
60 ciConstant(jlong value) { | |
61 _type = T_LONG; _value._long = value; | |
62 } | |
63 ciConstant(jfloat value) { | |
64 _type = T_FLOAT; _value._float = value; | |
65 } | |
66 ciConstant(jdouble value) { | |
67 _type = T_DOUBLE; _value._double = value; | |
68 } | |
69 ciConstant(BasicType type, ciObject* p) { | |
70 _type = type; _value._object = p; | |
71 } | |
72 | |
73 BasicType basic_type() const { return _type; } | |
74 | |
75 jboolean as_boolean() { | |
76 assert(basic_type() == T_BOOLEAN, "wrong type"); | |
77 return (jboolean)_value._int; | |
78 } | |
79 jchar as_char() { | |
80 assert(basic_type() == T_CHAR, "wrong type"); | |
81 return (jchar)_value._int; | |
82 } | |
83 jbyte as_byte() { | |
84 assert(basic_type() == T_BYTE, "wrong type"); | |
85 return (jbyte)_value._int; | |
86 } | |
87 jshort as_short() { | |
88 assert(basic_type() == T_SHORT, "wrong type"); | |
89 return (jshort)_value._int; | |
90 } | |
91 jint as_int() { | |
92 assert(basic_type() == T_BOOLEAN || basic_type() == T_CHAR || | |
93 basic_type() == T_BYTE || basic_type() == T_SHORT || | |
94 basic_type() == T_INT, "wrong type"); | |
95 return _value._int; | |
96 } | |
97 jlong as_long() { | |
98 assert(basic_type() == T_LONG, "wrong type"); | |
99 return _value._long; | |
100 } | |
101 jfloat as_float() { | |
102 assert(basic_type() == T_FLOAT, "wrong type"); | |
103 return _value._float; | |
104 } | |
105 jdouble as_double() { | |
106 assert(basic_type() == T_DOUBLE, "wrong type"); | |
107 return _value._double; | |
108 } | |
109 ciObject* as_object() const { | |
110 assert(basic_type() == T_OBJECT || basic_type() == T_ARRAY, "wrong type"); | |
111 return _value._object; | |
112 } | |
113 | |
114 // Debugging output | |
115 void print(); | |
116 }; | |
1972 | 117 |
118 #endif // SHARE_VM_CI_CICONSTANT_HPP |