author | stefank |
Tue, 23 Nov 2010 13:22:55 -0800 | |
changeset 7397 | 5b173b4ca846 |
parent 5547 | f4b087cbb361 |
child 13728 | 882756847a04 |
permissions | -rw-r--r-- |
1 | 1 |
/* |
7397 | 2 |
* Copyright (c) 2000, 2010, Oracle and/or its affiliates. All rights reserved. |
1 | 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 |
* |
|
5547
f4b087cbb361
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
1
diff
changeset
|
19 |
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
f4b087cbb361
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
1
diff
changeset
|
20 |
* or visit www.oracle.com if you need additional information or have any |
f4b087cbb361
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
1
diff
changeset
|
21 |
* questions. |
1 | 22 |
* |
23 |
*/ |
|
24 |
||
7397 | 25 |
#ifndef SHARE_VM_CI_CITYPE_HPP |
26 |
#define SHARE_VM_CI_CITYPE_HPP |
|
27 |
||
28 |
#include "ci/ciObject.hpp" |
|
29 |
#include "oops/klassOop.hpp" |
|
30 |
||
1 | 31 |
// ciType |
32 |
// |
|
33 |
// This class represents either a class (T_OBJECT), array (T_ARRAY), |
|
34 |
// or one of the primitive types such as T_INT. |
|
35 |
class ciType : public ciObject { |
|
36 |
CI_PACKAGE_ACCESS |
|
37 |
friend class ciKlass; |
|
38 |
friend class ciReturnAddress; |
|
39 |
||
40 |
private: |
|
41 |
BasicType _basic_type; |
|
42 |
||
43 |
ciType(BasicType t); // for the primitive types only |
|
44 |
ciType(KlassHandle k); // for subclasses (reference types) |
|
45 |
ciType(ciKlass* klass); // for unloaded types |
|
46 |
||
47 |
const char* type_string() { return "ciType"; } |
|
48 |
||
49 |
void print_impl(outputStream* st); |
|
50 |
||
51 |
// Distinguished instances of primitive ciTypes.. |
|
52 |
static ciType* _basic_types[T_CONFLICT+1]; |
|
53 |
||
54 |
public: |
|
55 |
BasicType basic_type() const { return _basic_type; } |
|
56 |
||
57 |
// Returns true iff the types are identical, or if both are klasses |
|
58 |
// and the is_subtype_of relation holds between the klasses. |
|
59 |
bool is_subtype_of(ciType* type); |
|
60 |
||
61 |
// Get the instance of java.lang.Class corresponding to this type. |
|
62 |
// There are mirrors for instance, array, and primitive types (incl. void). |
|
63 |
virtual ciInstance* java_mirror(); |
|
64 |
||
65 |
// Get the class which "boxes" (or "wraps") values of this type. |
|
66 |
// Example: short is boxed by java.lang.Short, etc. |
|
67 |
// Returns self if it is a reference type. |
|
68 |
// Returns NULL for void, since null is used in such cases. |
|
69 |
ciKlass* box_klass(); |
|
70 |
||
71 |
// Returns true if this is not a klass or array (i.e., not a reference type). |
|
72 |
bool is_primitive_type() const { return basic_type() != T_OBJECT && basic_type() != T_ARRAY; } |
|
73 |
int size() const { return type2size[basic_type()]; } |
|
74 |
bool is_void() const { return basic_type() == T_VOID; } |
|
75 |
bool is_one_word() const { return size() == 1; } |
|
76 |
bool is_two_word() const { return size() == 2; } |
|
77 |
||
78 |
// What kind of ciObject is this? |
|
79 |
bool is_type() { return true; } |
|
80 |
bool is_classless() const { return is_primitive_type(); } |
|
81 |
||
82 |
virtual void print_name_on(outputStream* st); |
|
83 |
void print_name() { |
|
84 |
print_name_on(tty); |
|
85 |
} |
|
86 |
||
87 |
static ciType* make(BasicType t); |
|
88 |
}; |
|
89 |
||
90 |
||
91 |
// ciReturnAddress |
|
92 |
// |
|
93 |
// This class represents the type of a specific return address in the |
|
94 |
// bytecodes. |
|
95 |
class ciReturnAddress : public ciType { |
|
96 |
CI_PACKAGE_ACCESS |
|
97 |
||
98 |
private: |
|
99 |
// The bci of this return address. |
|
100 |
int _bci; |
|
101 |
||
102 |
ciReturnAddress(int bci); |
|
103 |
||
104 |
const char* type_string() { return "ciReturnAddress"; } |
|
105 |
||
106 |
void print_impl(outputStream* st); |
|
107 |
||
108 |
public: |
|
109 |
bool is_return_address() { return true; } |
|
110 |
||
111 |
int bci() { return _bci; } |
|
112 |
||
113 |
static ciReturnAddress* make(int bci); |
|
114 |
}; |
|
7397 | 115 |
|
116 |
#endif // SHARE_VM_CI_CITYPE_HPP |