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 
19 namespace llvm {
20 
21 template <typename T>
capacity_in_bytes(const T & x)22 static 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