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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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