Mercurial > hg > truffle
annotate src/share/vm/ci/ciSymbol.hpp @ 2015:79d8657be916
6993125: runThese crashes with assert(Thread::current()->on_local_stack((address)this))
Summary: add another ResourceObj debug field to distinguish garbage
Reviewed-by: dholmes, coleenp
author | kvn |
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date | Fri, 10 Dec 2010 14:14:02 -0800 |
parents | f95d63e2154a |
children | 06f017f7daa7 3582bf76420e |
rev | line source |
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0 | 1 /* |
1972 | 2 * Copyright (c) 1999, 2010, 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 * | |
1552
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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_CISYMBOL_HPP |
26 #define SHARE_VM_CI_CISYMBOL_HPP | |
27 | |
28 #include "ci/ciObject.hpp" | |
29 #include "ci/ciObjectFactory.hpp" | |
30 #include "classfile/vmSymbols.hpp" | |
31 #include "oops/symbolOop.hpp" | |
32 | |
0 | 33 // ciSymbol |
34 // | |
35 // This class represents a symbolOop in the HotSpot virtual | |
36 // machine. | |
37 class ciSymbol : public ciObject { | |
38 CI_PACKAGE_ACCESS | |
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39 // These friends all make direct use of get_symbolOop: |
0 | 40 friend class ciEnv; |
41 friend class ciInstanceKlass; | |
42 friend class ciSignature; | |
43 friend class ciMethod; | |
44 friend class ciObjArrayKlass; | |
45 | |
46 private: | |
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47 const vmSymbols::SID _sid; |
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48 DEBUG_ONLY( bool sid_ok() { return vmSymbols::find_sid(get_symbolOop()) == _sid; } ) |
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49 |
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50 ciSymbol(symbolOop s); // normal case, for symbols not mentioned in vmSymbols |
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51 ciSymbol(symbolHandle s, vmSymbols::SID sid); // for use with vmSymbolHandles |
0 | 52 |
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53 symbolOop get_symbolOop() const { return (symbolOop)get_oop(); } |
0 | 54 |
55 const char* type_string() { return "ciSymbol"; } | |
56 | |
57 void print_impl(outputStream* st); | |
58 | |
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59 // This is public in symbolOop but private here, because the base can move: |
0 | 60 jbyte* base(); |
61 | |
62 // Make a ciSymbol from a C string (implementation). | |
63 static ciSymbol* make_impl(const char* s); | |
64 | |
65 public: | |
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66 // The enumeration ID from vmSymbols, or vmSymbols::NO_SID if none. |
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67 vmSymbols::SID sid() const { return _sid; } |
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68 |
0 | 69 // The text of the symbol as a null-terminated utf8 string. |
70 const char* as_utf8(); | |
71 int utf8_length(); | |
72 | |
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73 // Return the i-th utf8 byte, where i < utf8_length |
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74 int byte_at(int i); |
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75 |
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76 // Tests if the symbol starts with the given prefix. |
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77 bool starts_with(const char* prefix, int len) const; |
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78 |
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79 // Determines where the symbol contains the given substring. |
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80 int index_of_at(int i, const char* str, int len) const; |
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81 |
0 | 82 // What kind of ciObject is this? |
83 bool is_symbol() { return true; } | |
84 | |
85 void print_symbol_on(outputStream* st); | |
86 void print_symbol() { | |
87 print_symbol_on(tty); | |
88 } | |
89 | |
90 // Make a ciSymbol from a C string. | |
91 // Consider adding to vmSymbols.hpp instead of using this constructor. | |
92 // (Your code will be less subject to typographical bugs.) | |
93 static ciSymbol* make(const char* s); | |
94 | |
95 #define CI_SYMBOL_DECLARE(name, ignore_def) \ | |
96 static ciSymbol* name() { return ciObjectFactory::vm_symbol_at(vmSymbols::VM_SYMBOL_ENUM_NAME(name)); } | |
97 VM_SYMBOLS_DO(CI_SYMBOL_DECLARE, CI_SYMBOL_DECLARE) | |
98 #undef CI_SYMBOL_DECLARE | |
99 }; | |
1972 | 100 |
101 #endif // SHARE_VM_CI_CISYMBOL_HPP |