// Copyright 2008 the V8 project authors. All rights reserved. // Redistribution and use in source and binary forms, with or without // modification, are permitted provided that the following conditions are // met: // // * Redistributions of source code must retain the above copyright // notice, this list of conditions and the following disclaimer. // * Redistributions in binary form must reproduce the above // copyright notice, this list of conditions and the following // disclaimer in the documentation and/or other materials provided // with the distribution. // * Neither the name of Google Inc. nor the names of its // contributors may be used to endorse or promote products derived // from this software without specific prior written permission. // // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. #ifndef V8_COMPILATION_CACHE_H_ #define V8_COMPILATION_CACHE_H_ namespace v8 { namespace internal { // The compilation cache keeps shared function infos for compiled // scripts and evals. The shared function infos are looked up using // the source string as the key. For regular expressions the // compilation data is cached. class CompilationCache { public: // Finds the script shared function info for a source // string. Returns an empty handle if the cache doesn't contain a // script for the given source string with the right origin. static Handle<SharedFunctionInfo> LookupScript(Handle<String> source, Handle<Object> name, int line_offset, int column_offset); // Finds the shared function info for a source string for eval in a // given context. Returns an empty handle if the cache doesn't // contain a script for the given source string. static Handle<SharedFunctionInfo> LookupEval(Handle<String> source, Handle<Context> context, bool is_global); // Returns the regexp data associated with the given regexp if it // is in cache, otherwise an empty handle. static Handle<FixedArray> LookupRegExp(Handle<String> source, JSRegExp::Flags flags); // Associate the (source, kind) pair to the shared function // info. This may overwrite an existing mapping. static void PutScript(Handle<String> source, Handle<SharedFunctionInfo> function_info); // Associate the (source, context->closure()->shared(), kind) triple // with the shared function info. This may overwrite an existing mapping. static void PutEval(Handle<String> source, Handle<Context> context, bool is_global, Handle<SharedFunctionInfo> function_info); // Associate the (source, flags) pair to the given regexp data. // This may overwrite an existing mapping. static void PutRegExp(Handle<String> source, JSRegExp::Flags flags, Handle<FixedArray> data); // Clear the cache - also used to initialize the cache at startup. static void Clear(); static bool HasFunction(SharedFunctionInfo* function_info); // GC support. static void Iterate(ObjectVisitor* v); // Notify the cache that a mark-sweep garbage collection is about to // take place. This is used to retire entries from the cache to // avoid keeping them alive too long without using them. static void MarkCompactPrologue(); // Enable/disable compilation cache. Used by debugger to disable compilation // cache during debugging to make sure new scripts are always compiled. static void Enable(); static void Disable(); }; } } // namespace v8::internal #endif // V8_COMPILATION_CACHE_H_