1 // Copyright 2019 the V8 project authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef V8_CODEGEN_PENDING_OPTIMIZATION_TABLE_H_ 6 #define V8_CODEGEN_PENDING_OPTIMIZATION_TABLE_H_ 7 8 #include "src/common/globals.h" 9 10 namespace v8 { 11 namespace internal { 12 13 // This class adds the functionality to properly test the optimized code. This 14 // is only for use in tests. All these functions should only be called when 15 // testing_d8_flag_for_tests is set. 16 class PendingOptimizationTable { 17 public: 18 // This function should be called before we mark the function for 19 // optimization. Calling this function ensures that |function| is compiled and 20 // has a feedback vector allocated. This also holds on to the bytecode 21 // strongly in pending optimization table preventing the bytecode to be 22 // flushed. 23 static void PreparedForOptimization(Isolate* isolate, 24 Handle<JSFunction> function, 25 bool allow_heuristic_optimization); 26 27 // This function should be called when the function is marked for optimization 28 // via the intrinsics. This will update the state of the bytecode array in the 29 // pending optimization table, so that the entry can be removed once the 30 // function is optimized. If the function is already optimized it removes the 31 // entry from the table. 32 static void MarkedForOptimization(Isolate* isolate, 33 Handle<JSFunction> function); 34 35 // This function should be called once the function is optimized. If there is 36 // an entry in the pending optimization table and it is marked for removal 37 // then this function removes the entry from pending optimization table. 38 static void FunctionWasOptimized(Isolate* isolate, 39 Handle<JSFunction> function); 40 41 // This function returns whether a heuristic is allowed to trigger 42 // optimization the function. This mechanism is used in tests to prevent 43 // heuristics from interfering with manually triggered optimization. 44 static bool IsHeuristicOptimizationAllowed(Isolate* isolate, 45 JSFunction function); 46 }; 47 48 } // namespace internal 49 } // namespace v8 50 51 #endif // V8_CODEGEN_PENDING_OPTIMIZATION_TABLE_H_ 52