1 // Copyright 2015 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_PROFILER_STRINGS_STORAGE_H_ 6 #define V8_PROFILER_STRINGS_STORAGE_H_ 7 8 #include "src/allocation.h" 9 #include "src/hashmap.h" 10 11 namespace v8 { 12 namespace internal { 13 14 // Provides a storage of strings allocated in C++ heap, to hold them 15 // forever, even if they disappear from JS heap or external storage. 16 class StringsStorage { 17 public: 18 explicit StringsStorage(Heap* heap); 19 ~StringsStorage(); 20 21 const char* GetCopy(const char* src); 22 const char* GetFormatted(const char* format, ...); 23 const char* GetVFormatted(const char* format, va_list args); 24 const char* GetName(Name* name); 25 const char* GetName(int index); 26 const char* GetFunctionName(Name* name); 27 const char* GetFunctionName(const char* name); 28 size_t GetUsedMemorySize() const; 29 30 private: 31 static const int kMaxNameSize = 1024; 32 33 static bool StringsMatch(void* key1, void* key2); 34 const char* AddOrDisposeString(char* str, int len); 35 HashMap::Entry* GetEntry(const char* str, int len); 36 37 uint32_t hash_seed_; 38 HashMap names_; 39 40 DISALLOW_COPY_AND_ASSIGN(StringsStorage); 41 }; 42 } // namespace internal 43 } // namespace v8 44 45 #endif // V8_PROFILER_STRINGS_STORAGE_H_ 46