auto_free.h

   1 // -*- C++ -*-
   2 // Copyright (C) 2008 Red Hat Inc.
   3 //
   4 // This file is part of systemtap, and is free software.  You can
   5 // redistribute it and/or modify it under the terms of the GNU General
   6 // Public License (GPL); either version 2, or (at your option) any
   7 // later version.
   8
   9 #ifndef AUTO_FREE_H
  10 #define AUTO_FREE_H 1
  11 #include <cstdlib>
  12
  13 // Very simple auto_ptr-like class for protecting storage allocated
  14 // with free().
  15 class auto_free
  16 {
  17 public:
  18   auto_free(void* ptr) : _ptr(ptr) {}
  19   ~auto_free()
  20   {
  21     if (_ptr)
  22       std::free(_ptr);
  23   }
  24   void release()
  25   {
  26     _ptr = 0;
  27   }
  28 private:
  29   // No copying allowed.
  30   auto_free(const auto_free& af)
  31   {
  32   }
  33   // No assignment either
  34   auto_free& operator=(const auto_free& rhs)
  35   {
  36     return *this;
  37   }
  38   void* _ptr;
  39 };
  40 #endif