Mercurial > hg > truffle
annotate src/share/vm/ci/ciObjArrayKlass.cpp @ 9691:bd5c6b3dedc5
implement inlining support for JSR 292
author | twisti |
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date | Tue, 14 May 2013 11:27:09 -0700 |
parents | d8ce2825b193 |
children | d13d7aba8c12 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1999, 2012, 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 #include "precompiled.hpp" |
26 #include "ci/ciInstanceKlass.hpp" | |
27 #include "ci/ciObjArrayKlass.hpp" | |
28 #include "ci/ciSymbol.hpp" | |
29 #include "ci/ciUtilities.hpp" | |
30 #include "oops/objArrayKlass.hpp" | |
0 | 31 |
32 // ciObjArrayKlass | |
33 // | |
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34 // This class represents a Klass* in the HotSpot virtual machine |
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35 // whose Klass part is an ObjArrayKlass. |
0 | 36 |
37 // ------------------------------------------------------------------ | |
38 // ciObjArrayKlass::ciObjArrayKlass | |
39 // | |
40 // Constructor for loaded object array klasses. | |
41 ciObjArrayKlass::ciObjArrayKlass(KlassHandle h_k) : ciArrayKlass(h_k) { | |
42 assert(get_Klass()->oop_is_objArray(), "wrong type"); | |
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43 Klass* element_Klass = get_ObjArrayKlass()->bottom_klass(); |
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44 _base_element_klass = CURRENT_ENV->get_klass(element_Klass); |
0 | 45 assert(_base_element_klass->is_instance_klass() || |
46 _base_element_klass->is_type_array_klass(), "bad base klass"); | |
47 if (dimension() == 1) { | |
48 _element_klass = _base_element_klass; | |
49 } else { | |
50 _element_klass = NULL; | |
51 } | |
52 if (!ciObjectFactory::is_initialized()) { | |
53 assert(_element_klass->is_java_lang_Object(), "only arrays of object are shared"); | |
54 } | |
55 } | |
56 | |
57 // ------------------------------------------------------------------ | |
58 // ciObjArrayKlass::ciObjArrayKlass | |
59 // | |
60 // Constructor for unloaded object array klasses. | |
61 ciObjArrayKlass::ciObjArrayKlass(ciSymbol* array_name, | |
62 ciKlass* base_element_klass, | |
63 int dimension) | |
64 : ciArrayKlass(array_name, | |
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65 dimension, T_OBJECT) { |
0 | 66 _base_element_klass = base_element_klass; |
67 assert(_base_element_klass->is_instance_klass() || | |
68 _base_element_klass->is_type_array_klass(), "bad base klass"); | |
69 if (dimension == 1) { | |
70 _element_klass = base_element_klass; | |
71 } else { | |
72 _element_klass = NULL; | |
73 } | |
74 } | |
75 | |
76 // ------------------------------------------------------------------ | |
77 // ciObjArrayKlass::element_klass | |
78 // | |
79 // What is the one-level element type of this array? | |
80 ciKlass* ciObjArrayKlass::element_klass() { | |
81 if (_element_klass == NULL) { | |
82 assert(dimension() > 1, "_element_klass should not be NULL"); | |
83 // Produce the element klass. | |
84 if (is_loaded()) { | |
85 VM_ENTRY_MARK; | |
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86 Klass* element_Klass = get_ObjArrayKlass()->element_klass(); |
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87 _element_klass = CURRENT_THREAD_ENV->get_klass(element_Klass); |
0 | 88 } else { |
89 VM_ENTRY_MARK; | |
90 // We are an unloaded array klass. Attempt to fetch our | |
91 // element klass by name. | |
92 _element_klass = CURRENT_THREAD_ENV->get_klass_by_name_impl( | |
93 this, | |
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94 constantPoolHandle(), |
0 | 95 construct_array_name(base_element_klass()->name(), |
96 dimension() - 1), | |
97 false); | |
98 } | |
99 } | |
100 return _element_klass; | |
101 } | |
102 | |
103 // ------------------------------------------------------------------ | |
104 // ciObjArrayKlass::construct_array_name | |
105 // | |
106 // Build an array name from an element name and a dimension. | |
107 ciSymbol* ciObjArrayKlass::construct_array_name(ciSymbol* element_name, | |
108 int dimension) { | |
109 EXCEPTION_CONTEXT; | |
110 int element_len = element_name->utf8_length(); | |
111 | |
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112 Symbol* base_name_sym = element_name->get_symbol(); |
0 | 113 char* name; |
114 | |
115 if (base_name_sym->byte_at(0) == '[' || | |
116 (base_name_sym->byte_at(0) == 'L' && // watch package name 'Lxx' | |
117 base_name_sym->byte_at(element_len-1) == ';')) { | |
118 | |
119 int new_len = element_len + dimension + 1; // for the ['s and '\0' | |
120 name = CURRENT_THREAD_ENV->name_buffer(new_len); | |
121 | |
122 int pos = 0; | |
123 for ( ; pos < dimension; pos++) { | |
124 name[pos] = '['; | |
125 } | |
126 strncpy(name+pos, (char*)element_name->base(), element_len); | |
127 name[new_len-1] = '\0'; | |
128 } else { | |
129 int new_len = 3 // for L, ;, and '\0' | |
130 + dimension // for ['s | |
131 + element_len; | |
132 | |
133 name = CURRENT_THREAD_ENV->name_buffer(new_len); | |
134 int pos = 0; | |
135 for ( ; pos < dimension; pos++) { | |
136 name[pos] = '['; | |
137 } | |
138 name[pos++] = 'L'; | |
139 strncpy(name+pos, (char*)element_name->base(), element_len); | |
140 name[new_len-2] = ';'; | |
141 name[new_len-1] = '\0'; | |
142 } | |
143 return ciSymbol::make(name); | |
144 } | |
145 | |
146 // ------------------------------------------------------------------ | |
147 // ciObjArrayKlass::make_impl | |
148 // | |
149 // Implementation of make. | |
150 ciObjArrayKlass* ciObjArrayKlass::make_impl(ciKlass* element_klass) { | |
151 | |
152 if (element_klass->is_loaded()) { | |
153 EXCEPTION_CONTEXT; | |
154 // The element klass is loaded | |
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155 Klass* array = element_klass->get_Klass()->array_klass(THREAD); |
0 | 156 if (HAS_PENDING_EXCEPTION) { |
157 CLEAR_PENDING_EXCEPTION; | |
158 CURRENT_THREAD_ENV->record_out_of_memory_failure(); | |
159 return ciEnv::unloaded_ciobjarrayklass(); | |
160 } | |
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161 return CURRENT_THREAD_ENV->get_obj_array_klass(array); |
0 | 162 } |
163 | |
164 // The array klass was unable to be made or the element klass was | |
165 // not loaded. | |
166 ciSymbol* array_name = construct_array_name(element_klass->name(), 1); | |
167 if (array_name == ciEnv::unloaded_cisymbol()) { | |
168 return ciEnv::unloaded_ciobjarrayklass(); | |
169 } | |
170 return | |
171 CURRENT_ENV->get_unloaded_klass(element_klass, array_name) | |
172 ->as_obj_array_klass(); | |
173 } | |
174 | |
175 // ------------------------------------------------------------------ | |
176 // ciObjArrayKlass::make | |
177 // | |
178 // Make an array klass corresponding to the specified primitive type. | |
179 ciObjArrayKlass* ciObjArrayKlass::make(ciKlass* element_klass) { | |
180 GUARDED_VM_ENTRY(return make_impl(element_klass);) | |
181 } |