Mercurial > hg > graal-compiler

annotate src/share/vm/runtime/fieldType.hpp @ 18096:ca6d25be853b jdk8u25-b13

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
8044269: Analysis of archive files. Summary: Add checksum verification. Reviewed-by: iklam, dholmes, mschoene
author jiangli
date Tue, 12 Aug 2014 17:46:16 -0400
parents 1d1603768966
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
0
a61af66fc99e Initial load
duke
parents:
diff changeset
1 /*
2426
1d1603768966 7010070: Update all 2010 Oracle-changed OpenJDK files to have the proper copyright dates - second pass
trims
parents: 2177
diff changeset
2 * Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved.
0
a61af66fc99e Initial load
duke
parents:
diff changeset
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
a61af66fc99e Initial load
duke
parents:
diff changeset
4 *
a61af66fc99e Initial load
duke
parents:
diff changeset
5 * This code is free software; you can redistribute it and/or modify it
a61af66fc99e Initial load
duke
parents:
diff changeset
6 * under the terms of the GNU General Public License version 2 only, as
a61af66fc99e Initial load
duke
parents:
diff changeset
7 * published by the Free Software Foundation.
a61af66fc99e Initial load
duke
parents:
diff changeset
8 *
a61af66fc99e Initial load
duke
parents:
diff changeset
9 * This code is distributed in the hope that it will be useful, but WITHOUT
a61af66fc99e Initial load
duke
parents:
diff changeset
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
a61af66fc99e Initial load
duke
parents:
diff changeset
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
a61af66fc99e Initial load
duke
parents:
diff changeset
12 * version 2 for more details (a copy is included in the LICENSE file that
a61af66fc99e Initial load
duke
parents:
diff changeset
13 * accompanied this code).
a61af66fc99e Initial load
duke
parents:
diff changeset
14 *
a61af66fc99e Initial load
duke
parents:
diff changeset
15 * You should have received a copy of the GNU General Public License version
a61af66fc99e Initial load
duke
parents:
diff changeset
16 * 2 along with this work; if not, write to the Free Software Foundation,
a61af66fc99e Initial load
duke
parents:
diff changeset
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
a61af66fc99e Initial load
duke
parents:
diff changeset
18 *
1552
c18cbe5936b8 6941466: Oracle rebranding changes for Hotspot repositories
trims
parents: 0
diff changeset
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
c18cbe5936b8 6941466: Oracle rebranding changes for Hotspot repositories
trims
parents: 0
diff changeset
20 * or visit www.oracle.com if you need additional information or have any
c18cbe5936b8 6941466: Oracle rebranding changes for Hotspot repositories
trims
parents: 0
diff changeset
21 * questions.
0
a61af66fc99e Initial load
duke
parents:
diff changeset
22 *
a61af66fc99e Initial load
duke
parents:
diff changeset
23 */
a61af66fc99e Initial load
duke
parents:
diff changeset
24
1972
f95d63e2154a 6989984: Use standard include model for Hospot
stefank
parents: 1552
diff changeset
25 #ifndef SHARE_VM_RUNTIME_FIELDTYPE_HPP
f95d63e2154a 6989984: Use standard include model for Hospot
stefank
parents: 1552
diff changeset
26 #define SHARE_VM_RUNTIME_FIELDTYPE_HPP
f95d63e2154a 6989984: Use standard include model for Hospot
stefank
parents: 1552
diff changeset
27
f95d63e2154a 6989984: Use standard include model for Hospot
stefank
parents: 1552
diff changeset
28 #include "memory/allocation.hpp"
2177
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents: 1972
diff changeset
29 #include "oops/symbol.hpp"
1972
f95d63e2154a 6989984: Use standard include model for Hospot
stefank
parents: 1552
diff changeset
30
0
a61af66fc99e Initial load
duke
parents:
diff changeset
31 // Note: FieldType should be based on the SignatureIterator (or vice versa).
a61af66fc99e Initial load
duke
parents:
diff changeset
32 // In any case, this structure should be re-thought at some point.
a61af66fc99e Initial load
duke
parents:
diff changeset
33
a61af66fc99e Initial load
duke
parents:
diff changeset
34 // A FieldType is used to determine the type of a field from a signature string.
a61af66fc99e Initial load
duke
parents:
diff changeset
35
2177
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents: 1972
diff changeset
36 // Information returned by get_array_info, which is scoped to decrement
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents: 1972
diff changeset
37 // reference count if a Symbol is created in the case of T_OBJECT
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents: 1972
diff changeset
38 class FieldArrayInfo : public StackObj {
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents: 1972
diff changeset
39 friend class FieldType; // field type can set these fields.
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents: 1972
diff changeset
40 int _dimension;
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents: 1972
diff changeset
41 Symbol* _object_key;
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents: 1972
diff changeset
42 public:
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents: 1972
diff changeset
43 int dimension() { return _dimension; }
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents: 1972
diff changeset
44 Symbol* object_key() { return _object_key; }
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents: 1972
diff changeset
45 // basic constructor
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents: 1972
diff changeset
46 FieldArrayInfo() : _dimension(0), _object_key(NULL) {}
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents: 1972
diff changeset
47 // destructor decrements object key's refcount if created
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents: 1972
diff changeset
48 ~FieldArrayInfo() { if (_object_key != NULL) _object_key->decrement_refcount(); }
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents: 1972
diff changeset
49 };
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents: 1972
diff changeset
50
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents: 1972
diff changeset
51
0
a61af66fc99e Initial load
duke
parents:
diff changeset
52 class FieldType: public AllStatic {
a61af66fc99e Initial load
duke
parents:
diff changeset
53 private:
2177
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents: 1972
diff changeset
54 static void skip_optional_size(Symbol* signature, int* index);
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents: 1972
diff changeset
55 static bool is_valid_array_signature(Symbol* signature);
0
a61af66fc99e Initial load
duke
parents:
diff changeset
56 public:
a61af66fc99e Initial load
duke
parents:
diff changeset
57
a61af66fc99e Initial load
duke
parents:
diff changeset
58 // Return basic type
2177
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents: 1972
diff changeset
59 static BasicType basic_type(Symbol* signature);
0
a61af66fc99e Initial load
duke
parents:
diff changeset
60
a61af66fc99e Initial load
duke
parents:
diff changeset
61 // Testing
2177
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents: 1972
diff changeset
62 static bool is_array(Symbol* signature) { return signature->utf8_length() > 1 && signature->byte_at(0) == '[' && is_valid_array_signature(signature); }
0
a61af66fc99e Initial load
duke
parents:
diff changeset
63
2177
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents: 1972
diff changeset
64 static bool is_obj(Symbol* signature) {
0
a61af66fc99e Initial load
duke
parents:
diff changeset
65 int sig_length = signature->utf8_length();
a61af66fc99e Initial load
duke
parents:
diff changeset
66 // Must start with 'L' and end with ';'
a61af66fc99e Initial load
duke
parents:
diff changeset
67 return (sig_length >= 2 &&
a61af66fc99e Initial load
duke
parents:
diff changeset
68 (signature->byte_at(0) == 'L') &&
a61af66fc99e Initial load
duke
parents:
diff changeset
69 (signature->byte_at(sig_length - 1) == ';'));
a61af66fc99e Initial load
duke
parents:
diff changeset
70 }
a61af66fc99e Initial load
duke
parents:
diff changeset
71
a61af66fc99e Initial load
duke
parents:
diff changeset
72 // Parse field and extract array information. Works for T_ARRAY only.
2177
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents: 1972
diff changeset
73 static BasicType get_array_info(Symbol* signature, FieldArrayInfo& ai, TRAPS);
0
a61af66fc99e Initial load
duke
parents:
diff changeset
74 };
1972
f95d63e2154a 6989984: Use standard include model for Hospot
stefank
parents: 1552
diff changeset
75
f95d63e2154a 6989984: Use standard include model for Hospot
stefank
parents: 1552
diff changeset
76 #endif // SHARE_VM_RUNTIME_FIELDTYPE_HPP