Upgrade V8 to 5.1.281.57 DO NOT MERGE
FPIIM-449
Change-Id: Id981b686b4d587ac31697662eb98bb34be42ad90
(cherry picked from commit 3b9bc31999c9787eb726ecdbfd5796bfdec32a18)
diff --git a/src/base/accounting-allocator.h b/src/base/accounting-allocator.h
new file mode 100644
index 0000000..ce67f37
--- /dev/null
+++ b/src/base/accounting-allocator.h
@@ -0,0 +1,34 @@
+// Copyright 2016 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef V8_BASE_ACCOUNTING_ALLOCATOR_H_
+#define V8_BASE_ACCOUNTING_ALLOCATOR_H_
+
+#include "src/base/atomicops.h"
+#include "src/base/macros.h"
+
+namespace v8 {
+namespace base {
+
+class AccountingAllocator final {
+ public:
+ AccountingAllocator() = default;
+ ~AccountingAllocator() = default;
+
+ // Returns nullptr on failed allocation.
+ void* Allocate(size_t bytes);
+ void Free(void* memory, size_t bytes);
+
+ size_t GetCurrentMemoryUsage() const;
+
+ private:
+ AtomicWord current_memory_usage_ = 0;
+
+ DISALLOW_COPY_AND_ASSIGN(AccountingAllocator);
+};
+
+} // namespace base
+} // namespace v8
+
+#endif // V8_BASE_ACCOUNTING_ALLOCATOR_H_