src/llvm/include/llvm/Support/Capacity.h

   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>
  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