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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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| 30 #include "compilation-cache.h" | 30 #include "compilation-cache.h" |
| 31 | 31 |
| 32 namespace v8 { | 32 namespace v8 { |
| 33 namespace internal { | 33 namespace internal { |
| 34 | 34 |
| 35 | 35 |
| 36 // The number of sub caches covering the different types to cache. | 36 // The number of sub caches covering the different types to cache. |
| 37 static const int kSubCacheCount = 4; | 37 static const int kSubCacheCount = 4; |
| 38 | 38 |
| 39 // The number of generations for each sub cache. | 39 // The number of generations for each sub cache. |
| 40 #if V8_TARGET_ARCH_ARM |
| 41 static const int kScriptGenerations = 1; |
| 42 static const int kEvalGlobalGenerations = 1; |
| 43 static const int kEvalContextualGenerations = 1; |
| 44 static const int kRegExpGenerations = 1; |
| 45 #else |
| 40 static const int kScriptGenerations = 5; | 46 static const int kScriptGenerations = 5; |
| 41 static const int kEvalGlobalGenerations = 2; | 47 static const int kEvalGlobalGenerations = 2; |
| 42 static const int kEvalContextualGenerations = 2; | 48 static const int kEvalContextualGenerations = 2; |
| 43 static const int kRegExpGenerations = 2; | 49 static const int kRegExpGenerations = 2; |
| 50 #endif |
| 44 | 51 |
| 45 // Initial of each compilation cache table allocated. | 52 // Initial of each compilation cache table allocated. |
| 46 static const int kInitialCacheSize = 64; | 53 static const int kInitialCacheSize = 64; |
| 47 | 54 |
| 48 // The compilation cache consists of several generational sub-caches which uses | 55 // The compilation cache consists of several generational sub-caches which uses |
| 49 // this class as a base class. A sub-cache contains a compilation cache tables | 56 // this class as a base class. A sub-cache contains a compilation cache tables |
| 50 // for each generation of the sub-cache. As the same source code string has | 57 // for each generation of the sub-cache. As the same source code string has |
| 51 // different compiled code for scripts and evals. Internally, we use separate | 58 // different compiled code for scripts and evals. Internally, we use separate |
| 52 // sub-caches to avoid getting the wrong kind of result when looking up. | 59 // sub-caches to avoid getting the wrong kind of result when looking up. |
| 53 class CompilationSubCache { | 60 class CompilationSubCache { |
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| 470 } | 477 } |
| 471 | 478 |
| 472 | 479 |
| 473 void CompilationCache::Disable() { | 480 void CompilationCache::Disable() { |
| 474 enabled = false; | 481 enabled = false; |
| 475 Clear(); | 482 Clear(); |
| 476 } | 483 } |
| 477 | 484 |
| 478 | 485 |
| 479 } } // namespace v8::internal | 486 } } // namespace v8::internal |
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