1//===--- Capacity.h - Generic computation of ADT memory use -----*- C++ -*-===// 2// 3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4// See https://llvm.org/LICENSE.txt for license information. 5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6// 7//===----------------------------------------------------------------------===// 8// 9// This file defines the capacity function that computes the amount of 10// memory used by an ADT. 11// 12//===----------------------------------------------------------------------===// 13 14#ifndef LLVM_SUPPORT_CAPACITY_H 15#define LLVM_SUPPORT_CAPACITY_H 16 17#include <cstddef> 18 19namespace llvm { 20 21template <typename T> 22static inline size_t capacity_in_bytes(const T &x) { 23 // This default definition of capacity should work for things like std::vector 24 // and friends. More specialized versions will work for others. 25 return x.capacity() * sizeof(typename T::value_type); 26} 27 28} // end namespace llvm 29 30#endif 31 32