1 //===--- Capacity.h - Generic computation of ADT memory use -----*- C++ -*-===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 //
10 // This file defines the capacity function that computes the amount of
11 // memory used by an ADT.
12 //
13 //===----------------------------------------------------------------------===//
14 
15 #ifndef LLVM_SUPPORT_CAPACITY_H
16 #define LLVM_SUPPORT_CAPACITY_H
17 
18 #include <cstddef>
19 
20 namespace llvm {
21 
22 template <typename T>
capacity_in_bytes(const T & x)23 static inline size_t capacity_in_bytes(const T &x) {
24   // This default definition of capacity should work for things like std::vector
25   // and friends.  More specialized versions will work for others.
26   return x.capacity() * sizeof(typename T::value_type);
27 }
28 
29 } // end namespace llvm
30 
31 #endif
32 
33