Mercurial > hg > truffle
annotate src/share/vm/ci/ciKlass.hpp @ 1478:5571b97fc1ec
More JNI global handle clean ups.
author | Thomas Wuerthinger <wuerthinger@ssw.jku.at> |
---|---|
date | Fri, 26 Nov 2010 19:45:05 +0100 |
parents | dd57230ba8fe |
children | c18cbe5936b8 |
rev | line source |
---|---|
0 | 1 /* |
1138
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
0
diff
changeset
|
2 * Copyright 1999-2009 Sun Microsystems, Inc. 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 * | |
19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
20 * CA 95054 USA or visit www.sun.com if you need additional information or | |
21 * have any questions. | |
22 * | |
23 */ | |
24 | |
25 // ciKlass | |
26 // | |
27 // This class and its subclasses represent klassOops in the | |
28 // HotSpot virtual machine. In the vm, each klassOop contains an | |
29 // embedded Klass object. ciKlass is subclassed to explicitly | |
30 // represent the kind of Klass embedded in the klassOop. For | |
31 // example, a klassOop with an embedded objArrayKlass object is | |
32 // represented in the ciObject hierarchy by the class | |
33 // ciObjArrayKlass. | |
34 class ciKlass : public ciType { | |
35 CI_PACKAGE_ACCESS | |
36 friend class ciEnv; | |
37 friend class ciField; | |
38 friend class ciMethod; | |
39 friend class ciObjArrayKlass; | |
40 | |
41 private: | |
42 ciSymbol* _name; | |
43 jint _layout_helper; | |
44 | |
45 protected: | |
46 ciKlass(KlassHandle k_h, ciSymbol* name); | |
47 ciKlass(ciSymbol* name, ciKlass* klass); | |
48 | |
49 klassOop get_klassOop() const { | |
50 klassOop k = (klassOop)get_oop(); | |
51 assert(k != NULL, "illegal use of unloaded klass"); | |
52 return k; | |
53 } | |
54 | |
55 Klass* get_Klass() const { return get_klassOop()->klass_part(); } | |
56 | |
57 // Certain subklasses have an associated class loader. | |
58 virtual oop loader() { return NULL; } | |
59 virtual jobject loader_handle() { return NULL; } | |
60 | |
61 virtual oop protection_domain() { return NULL; } | |
62 virtual jobject protection_domain_handle() { return NULL; } | |
63 | |
64 const char* type_string() { return "ciKlass"; } | |
65 | |
66 void print_impl(outputStream* st); | |
67 | |
68 public: | |
69 ciKlass(KlassHandle k_h); | |
70 | |
71 // What is the name of this klass? | |
1138
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
0
diff
changeset
|
72 ciSymbol* name() const { return _name; } |
0 | 73 |
74 // What is its layout helper value? | |
75 jint layout_helper() { return _layout_helper; } | |
76 | |
77 bool is_subtype_of(ciKlass* klass); | |
78 bool is_subclass_of(ciKlass* klass); | |
79 juint super_depth(); | |
80 juint super_check_offset(); | |
81 ciKlass* super_of_depth(juint i); | |
82 bool can_be_primary_super(); | |
83 static juint primary_super_limit() { return Klass::primary_super_limit(); } | |
84 | |
85 // Get the shared parent of two klasses. | |
86 ciKlass* least_common_ancestor(ciKlass* k); | |
87 | |
88 virtual bool is_interface() { | |
89 return false; | |
90 } | |
91 | |
92 virtual bool is_abstract() { | |
93 return false; | |
94 } | |
95 | |
96 // Does this type (array, class, interface) have no subtypes? | |
97 virtual bool is_leaf_type() { | |
98 return false; | |
99 } | |
100 | |
101 // Attempt to get a klass using this ciKlass's loader. | |
102 ciKlass* find_klass(ciSymbol* klass_name); | |
103 // Note: To find a class from its name string, use ciSymbol::make, | |
104 // but consider adding to vmSymbols.hpp instead. | |
105 | |
106 // Get the instance of java.lang.Class corresponding to this klass. | |
107 ciInstance* java_mirror(); | |
108 | |
109 // Fetch Klass::modifier_flags. | |
110 jint modifier_flags(); | |
111 | |
112 // Fetch Klass::access_flags. | |
113 jint access_flags(); | |
114 | |
115 // What kind of ciObject is this? | |
116 bool is_klass() { return true; } | |
117 | |
118 void print_name_on(outputStream* st); | |
119 }; |