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1 // Copyright 2006-2008 the V8 project authors. All rights reserved. | 1 // Copyright 2006-2008 the V8 project authors. All rights reserved. |
2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
4 // met: | 4 // met: |
5 // | 5 // |
6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
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30 #include "bootstrapper.h" | 30 #include "bootstrapper.h" |
31 #include "code-stubs.h" | 31 #include "code-stubs.h" |
32 #include "factory.h" | 32 #include "factory.h" |
33 #include "macro-assembler.h" | 33 #include "macro-assembler.h" |
34 #include "oprofile-agent.h" | 34 #include "oprofile-agent.h" |
35 | 35 |
36 namespace v8 { | 36 namespace v8 { |
37 namespace internal { | 37 namespace internal { |
38 | 38 |
39 bool CodeStub::FindCodeInCache(Code** code_out) { | 39 bool CodeStub::FindCodeInCache(Code** code_out) { |
40 if (has_custom_cache()) return GetCustomCache(code_out); | |
41 int index = Heap::code_stubs()->FindEntry(GetKey()); | 40 int index = Heap::code_stubs()->FindEntry(GetKey()); |
42 if (index != NumberDictionary::kNotFound) { | 41 if (index != NumberDictionary::kNotFound) { |
43 *code_out = Code::cast(Heap::code_stubs()->ValueAt(index)); | 42 *code_out = Code::cast(Heap::code_stubs()->ValueAt(index)); |
44 return true; | 43 return true; |
45 } | 44 } |
46 return false; | 45 return false; |
47 } | 46 } |
48 | 47 |
49 | 48 |
50 void CodeStub::GenerateCode(MacroAssembler* masm) { | 49 void CodeStub::GenerateCode(MacroAssembler* masm) { |
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98 masm.GetCode(&desc); | 97 masm.GetCode(&desc); |
99 | 98 |
100 // Copy the generated code into a heap object. | 99 // Copy the generated code into a heap object. |
101 Code::Flags flags = Code::ComputeFlags( | 100 Code::Flags flags = Code::ComputeFlags( |
102 static_cast<Code::Kind>(GetCodeKind()), | 101 static_cast<Code::Kind>(GetCodeKind()), |
103 InLoop(), | 102 InLoop(), |
104 GetICState()); | 103 GetICState()); |
105 Handle<Code> new_object = Factory::NewCode(desc, flags, masm.CodeObject()); | 104 Handle<Code> new_object = Factory::NewCode(desc, flags, masm.CodeObject()); |
106 RecordCodeGeneration(*new_object, &masm); | 105 RecordCodeGeneration(*new_object, &masm); |
107 | 106 |
108 if (has_custom_cache()) { | 107 // Update the dictionary and the root in Heap. |
109 SetCustomCache(*new_object); | 108 Handle<NumberDictionary> dict = |
110 } else { | 109 Factory::DictionaryAtNumberPut( |
111 // Update the dictionary and the root in Heap. | 110 Handle<NumberDictionary>(Heap::code_stubs()), |
112 Handle<NumberDictionary> dict = | 111 GetKey(), |
113 Factory::DictionaryAtNumberPut( | 112 new_object); |
114 Handle<NumberDictionary>(Heap::code_stubs()), | 113 Heap::public_set_code_stubs(*dict); |
115 GetKey(), | 114 |
116 new_object); | |
117 Heap::public_set_code_stubs(*dict); | |
118 } | |
119 code = *new_object; | 115 code = *new_object; |
120 } | 116 } |
121 | 117 |
122 return Handle<Code>(code); | 118 return Handle<Code>(code); |
123 } | 119 } |
124 | 120 |
125 | 121 |
126 MaybeObject* CodeStub::TryGetCode() { | 122 MaybeObject* CodeStub::TryGetCode() { |
127 Code* code; | 123 Code* code; |
128 if (!FindCodeInCache(&code)) { | 124 if (!FindCodeInCache(&code)) { |
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140 InLoop(), | 136 InLoop(), |
141 GetICState()); | 137 GetICState()); |
142 Object* new_object; | 138 Object* new_object; |
143 { MaybeObject* maybe_new_object = | 139 { MaybeObject* maybe_new_object = |
144 Heap::CreateCode(desc, flags, masm.CodeObject()); | 140 Heap::CreateCode(desc, flags, masm.CodeObject()); |
145 if (!maybe_new_object->ToObject(&new_object)) return maybe_new_object; | 141 if (!maybe_new_object->ToObject(&new_object)) return maybe_new_object; |
146 } | 142 } |
147 code = Code::cast(new_object); | 143 code = Code::cast(new_object); |
148 RecordCodeGeneration(code, &masm); | 144 RecordCodeGeneration(code, &masm); |
149 | 145 |
150 if (has_custom_cache()) { | 146 // Try to update the code cache but do not fail if unable. |
151 SetCustomCache(code); | 147 MaybeObject* maybe_new_object = |
152 } else { | 148 Heap::code_stubs()->AtNumberPut(GetKey(), code); |
antonm
2010/11/15 16:22:06
[cosmetic nit] just asking: can this fit one line
SeRya
2010/11/15 16:37:50
It can't (only if shorten the var name).
| |
153 // Try to update the code cache but do not fail if unable. | 149 if (maybe_new_object->ToObject(&new_object)) { |
154 MaybeObject* maybe_new_object = | 150 Heap::public_set_code_stubs(NumberDictionary::cast(new_object)); |
155 Heap::code_stubs()->AtNumberPut(GetKey(), code); | |
156 if (maybe_new_object->ToObject(&new_object)) { | |
157 Heap::public_set_code_stubs(NumberDictionary::cast(new_object)); | |
158 } | |
159 } | 151 } |
160 } | 152 } |
161 | 153 |
162 return code; | 154 return code; |
163 } | 155 } |
164 | 156 |
165 | 157 |
166 const char* CodeStub::MajorName(CodeStub::Major major_key, | 158 const char* CodeStub::MajorName(CodeStub::Major major_key, |
167 bool allow_unknown_keys) { | 159 bool allow_unknown_keys) { |
168 switch (major_key) { | 160 switch (major_key) { |
169 #define DEF_CASE(name) case name: return #name; | 161 #define DEF_CASE(name) case name: return #name; |
170 CODE_STUB_LIST(DEF_CASE) | 162 CODE_STUB_LIST(DEF_CASE) |
171 #undef DEF_CASE | 163 #undef DEF_CASE |
172 default: | 164 default: |
173 if (!allow_unknown_keys) { | 165 if (!allow_unknown_keys) { |
174 UNREACHABLE(); | 166 UNREACHABLE(); |
175 } | 167 } |
176 return NULL; | 168 return NULL; |
177 } | 169 } |
178 } | 170 } |
179 | 171 |
180 | 172 |
181 } } // namespace v8::internal | 173 } } // namespace v8::internal |
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