Mercurial > hg > truffle
annotate src/share/vm/ci/ciSymbol.cpp @ 6653:2d5407ae1ac4
intermediate materialization is now removed during lowering of an InstanceOfNode that has a single usage which is an IfNode in the same block
lowered InstanceOfNode snippet graph is shared among similar usages of the InstanceOfNode
author | Doug Simon <doug.simon@oracle.com> |
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date | Tue, 30 Oct 2012 23:58:53 +0100 |
parents | 1d7922586cf6 |
children | b9a9ed0f8eeb |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1999, 2011, 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/ciSymbol.hpp" | |
27 #include "ci/ciUtilities.hpp" | |
28 #include "memory/oopFactory.hpp" | |
0 | 29 |
30 // ------------------------------------------------------------------ | |
31 // ciSymbol::ciSymbol | |
32 // | |
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33 // Preallocated symbol variant. Used with symbols from vmSymbols. |
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34 ciSymbol::ciSymbol(Symbol* s, vmSymbols::SID sid) |
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35 : _symbol(s), _sid(sid) |
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36 { |
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37 assert(_symbol != NULL, "adding null symbol"); |
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38 _symbol->increment_refcount(); // increment ref count |
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39 assert(sid_ok(), "must be in vmSymbols"); |
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40 } |
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41 |
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42 // Normal case for non-famous symbols. |
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43 ciSymbol::ciSymbol(Symbol* s) |
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44 : _symbol(s), _sid(vmSymbols::NO_SID) |
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45 { |
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46 assert(_symbol != NULL, "adding null symbol"); |
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47 _symbol->increment_refcount(); // increment ref count |
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48 assert(sid_ok(), "must not be in vmSymbols"); |
0 | 49 } |
50 | |
51 // ciSymbol | |
52 // | |
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53 // This class represents a Symbol* in the HotSpot virtual |
0 | 54 // machine. |
55 | |
56 // ------------------------------------------------------------------ | |
57 // ciSymbol::as_utf8 | |
58 // | |
59 // The text of the symbol as a null-terminated C string. | |
60 const char* ciSymbol::as_utf8() { | |
61 VM_QUICK_ENTRY_MARK; | |
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62 Symbol* s = get_symbol(); |
0 | 63 return s->as_utf8(); |
64 } | |
65 | |
66 // ------------------------------------------------------------------ | |
67 // ciSymbol::base | |
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68 const jbyte* ciSymbol::base() { |
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69 GUARDED_VM_ENTRY(return get_symbol()->base();) |
0 | 70 } |
71 | |
72 // ------------------------------------------------------------------ | |
73 // ciSymbol::byte_at | |
74 int ciSymbol::byte_at(int i) { | |
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75 GUARDED_VM_ENTRY(return get_symbol()->byte_at(i);) |
0 | 76 } |
77 | |
78 // ------------------------------------------------------------------ | |
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79 // ciSymbol::starts_with |
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80 // |
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81 // Tests if the symbol starts with the given prefix. |
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82 bool ciSymbol::starts_with(const char* prefix, int len) const { |
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83 GUARDED_VM_ENTRY(return get_symbol()->starts_with(prefix, len);) |
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84 } |
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85 |
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86 bool ciSymbol::is_signature_polymorphic_name() const { |
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87 GUARDED_VM_ENTRY(return MethodHandles::is_signature_polymorphic_name(get_symbol());) |
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88 } |
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89 |
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90 // ------------------------------------------------------------------ |
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91 // ciSymbol::index_of |
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92 // |
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93 // Determines where the symbol contains the given substring. |
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94 int ciSymbol::index_of_at(int i, const char* str, int len) const { |
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95 GUARDED_VM_ENTRY(return get_symbol()->index_of_at(i, str, len);) |
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96 } |
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97 |
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98 // ------------------------------------------------------------------ |
0 | 99 // ciSymbol::utf8_length |
100 int ciSymbol::utf8_length() { | |
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101 GUARDED_VM_ENTRY(return get_symbol()->utf8_length();) |
0 | 102 } |
103 | |
104 // ------------------------------------------------------------------ | |
105 // ciSymbol::print_impl | |
106 // | |
107 // Implementation of the print method | |
108 void ciSymbol::print_impl(outputStream* st) { | |
109 st->print(" value="); | |
110 print_symbol_on(st); | |
111 } | |
112 | |
113 // ------------------------------------------------------------------ | |
114 // ciSymbol::print_symbol_on | |
115 // | |
116 // Print the value of this symbol on an outputStream | |
117 void ciSymbol::print_symbol_on(outputStream *st) { | |
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118 GUARDED_VM_ENTRY(get_symbol()->print_symbol_on(st);) |
0 | 119 } |
120 | |
121 // ------------------------------------------------------------------ | |
122 // ciSymbol::make_impl | |
123 // | |
124 // Make a ciSymbol from a C string (implementation). | |
125 ciSymbol* ciSymbol::make_impl(const char* s) { | |
126 EXCEPTION_CONTEXT; | |
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127 TempNewSymbol sym = SymbolTable::new_symbol(s, THREAD); |
0 | 128 if (HAS_PENDING_EXCEPTION) { |
129 CLEAR_PENDING_EXCEPTION; | |
130 CURRENT_THREAD_ENV->record_out_of_memory_failure(); | |
131 return ciEnv::_unloaded_cisymbol; | |
132 } | |
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133 return CURRENT_THREAD_ENV->get_symbol(sym); |
0 | 134 } |
135 | |
136 // ------------------------------------------------------------------ | |
137 // ciSymbol::make | |
138 // | |
139 // Make a ciSymbol from a C string. | |
140 ciSymbol* ciSymbol::make(const char* s) { | |
141 GUARDED_VM_ENTRY(return make_impl(s);) | |
142 } |