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Unified Diff: src/base/accounting-allocator.h

Issue 1847543002: Expose a lower bound of malloc'd memory via heap statistics (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: updates Created 4 years, 9 months ago
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Index: src/base/accounting-allocator.h
diff --git a/src/base/accounting-allocator.h b/src/base/accounting-allocator.h
new file mode 100644
index 0000000000000000000000000000000000000000..ce67f3790ef846a02f09b12101cfbf9fbcd29f59
--- /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_
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