Capacity.h

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//===--- Capacity.h - Generic computation of ADT memory use -----*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// This file defines the capacity function that computes the amount of
// memory used by an ADT.
//
//===----------------------------------------------------------------------===//
 
#ifndef LLVM_SUPPORT_CAPACITY_H
#define LLVM_SUPPORT_CAPACITY_H
 
#include <cstddef>
 
namespace llvm {
 
template <typename T>
static inline size_t capacity_in_bytes(const T &x) {
  // This default definition of capacity should work for things like std::vector
  // and friends.  More specialized versions will work for others.
  return x.capacity() * sizeof(typename T::value_type);
}
 
} // end namespace llvm
 
#endif