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1 // Copyright 2008 the V8 project authors. All rights reserved. | 1 // Copyright 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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25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | 25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | 26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
27 | 27 |
28 #ifndef V8_COMPILATION_CACHE_H_ | 28 #ifndef V8_COMPILATION_CACHE_H_ |
29 #define V8_COMPILATION_CACHE_H_ | 29 #define V8_COMPILATION_CACHE_H_ |
30 | 30 |
31 namespace v8 { | 31 namespace v8 { |
32 namespace internal { | 32 namespace internal { |
33 | 33 |
34 | 34 |
35 // The compilation cache keeps function boilerplates for compiled | 35 // The compilation cache keeps shared function infos for compiled |
36 // scripts and evals. The boilerplates are looked up using the source | 36 // scripts and evals. The shared function infos are looked up using |
37 // string as the key. For regular expressions the compilation data is cached. | 37 // the source string as the key. For regular expressions the |
| 38 // compilation data is cached. |
38 class CompilationCache { | 39 class CompilationCache { |
39 public: | 40 public: |
40 // Finds the script function boilerplate for a source | 41 // Finds the script shared function info for a source |
41 // string. Returns an empty handle if the cache doesn't contain a | 42 // string. Returns an empty handle if the cache doesn't contain a |
42 // script for the given source string with the right origin. | 43 // script for the given source string with the right origin. |
43 static Handle<SharedFunctionInfo> LookupScript(Handle<String> source, | 44 static Handle<SharedFunctionInfo> LookupScript(Handle<String> source, |
44 Handle<Object> name, | 45 Handle<Object> name, |
45 int line_offset, | 46 int line_offset, |
46 int column_offset); | 47 int column_offset); |
47 | 48 |
48 // Finds the function boilerplate for a source string for eval in a | 49 // Finds the shared function info for a source string for eval in a |
49 // given context. Returns an empty handle if the cache doesn't | 50 // given context. Returns an empty handle if the cache doesn't |
50 // contain a script for the given source string. | 51 // contain a script for the given source string. |
51 static Handle<SharedFunctionInfo> LookupEval(Handle<String> source, | 52 static Handle<SharedFunctionInfo> LookupEval(Handle<String> source, |
52 Handle<Context> context, | 53 Handle<Context> context, |
53 bool is_global); | 54 bool is_global); |
54 | 55 |
55 // Returns the regexp data associated with the given regexp if it | 56 // Returns the regexp data associated with the given regexp if it |
56 // is in cache, otherwise an empty handle. | 57 // is in cache, otherwise an empty handle. |
57 static Handle<FixedArray> LookupRegExp(Handle<String> source, | 58 static Handle<FixedArray> LookupRegExp(Handle<String> source, |
58 JSRegExp::Flags flags); | 59 JSRegExp::Flags flags); |
59 | 60 |
60 // Associate the (source, kind) pair to the boilerplate. This may | 61 // Associate the (source, kind) pair to the shared function |
61 // overwrite an existing mapping. | 62 // info. This may overwrite an existing mapping. |
62 static void PutScript(Handle<String> source, | 63 static void PutScript(Handle<String> source, |
63 Handle<SharedFunctionInfo> function_info); | 64 Handle<SharedFunctionInfo> function_info); |
64 | 65 |
65 // Associate the (source, context->closure()->shared(), kind) triple | 66 // Associate the (source, context->closure()->shared(), kind) triple |
66 // with the boilerplate. This may overwrite an existing mapping. | 67 // with the shared function info. This may overwrite an existing mapping. |
67 static void PutEval(Handle<String> source, | 68 static void PutEval(Handle<String> source, |
68 Handle<Context> context, | 69 Handle<Context> context, |
69 bool is_global, | 70 bool is_global, |
70 Handle<SharedFunctionInfo> function_info); | 71 Handle<SharedFunctionInfo> function_info); |
71 | 72 |
72 // Associate the (source, flags) pair to the given regexp data. | 73 // Associate the (source, flags) pair to the given regexp data. |
73 // This may overwrite an existing mapping. | 74 // This may overwrite an existing mapping. |
74 static void PutRegExp(Handle<String> source, | 75 static void PutRegExp(Handle<String> source, |
75 JSRegExp::Flags flags, | 76 JSRegExp::Flags flags, |
76 Handle<FixedArray> data); | 77 Handle<FixedArray> data); |
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89 // Enable/disable compilation cache. Used by debugger to disable compilation | 90 // Enable/disable compilation cache. Used by debugger to disable compilation |
90 // cache during debugging to make sure new scripts are always compiled. | 91 // cache during debugging to make sure new scripts are always compiled. |
91 static void Enable(); | 92 static void Enable(); |
92 static void Disable(); | 93 static void Disable(); |
93 }; | 94 }; |
94 | 95 |
95 | 96 |
96 } } // namespace v8::internal | 97 } } // namespace v8::internal |
97 | 98 |
98 #endif // V8_COMPILATION_CACHE_H_ | 99 #endif // V8_COMPILATION_CACHE_H_ |
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