1 // Copyright 2016 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_BASE_ACCOUNTING_ALLOCATOR_H_ 6 #define V8_BASE_ACCOUNTING_ALLOCATOR_H_ 7 8 #include "src/base/atomicops.h" 9 #include "src/base/macros.h" 10 11 namespace v8 { 12 namespace base { 13 14 class AccountingAllocator final { 15 public: 16 AccountingAllocator() = default; 17 ~AccountingAllocator() = default; 18 19 // Returns nullptr on failed allocation. 20 void* Allocate(size_t bytes); 21 void Free(void* memory, size_t bytes); 22 23 size_t GetCurrentMemoryUsage() const; 24 25 private: 26 AtomicWord current_memory_usage_ = 0; 27 28 DISALLOW_COPY_AND_ASSIGN(AccountingAllocator); 29 }; 30 31 } // namespace base 32 } // namespace v8 33 34 #endif // V8_BASE_ACCOUNTING_ALLOCATOR_H_ 35