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// -*- C++ -*-
// Copyright (C) 2008 Red Hat Inc.
//
// This file is part of systemtap, and is free software. You can
// redistribute it and/or modify it under the terms of the GNU General
// Public License (GPL); either version 2, or (at your option) any
// later version.
#ifndef AUTO_FREE_H
#define AUTO_FREE_H 1
#include <cstdlib>
// Very simple auto_ptr-like class for protecting storage allocated
// with free().
class auto_free
{
public:
auto_free(void* ptr) : _ptr(ptr) {}
~auto_free()
{
if (_ptr)
std::free(_ptr);
}
void release()
{
_ptr = 0;
}
private:
// No copying allowed.
auto_free(const auto_free& af);
// No assignment either
auto_free& operator=(const auto_free& rhs);
void* _ptr;
};
// Use this to free a pointer whose value may change after the initial
// allocation e.g., be realloced.
template <typename T>
class auto_free_ref
{
public:
typedef T pointer_type;
auto_free_ref(pointer_type& ptr) : _ptr(ptr)
{
}
~auto_free_ref()
{
if (_ptr)
std::free(_ptr);
}
private:
// No copying allowed.
auto_free_ref(const auto_free_ref& af);
// No assignment either
auto_free_ref& operator=(const auto_free_ref& rhs);
pointer_type& _ptr;
};
#endif
/* vim: set sw=2 ts=8 cino=>4,n-2,{2,^-2,t0,(0,u0,w1,M1 : */
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