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/* Efficient file abstraction layer -*- c++ -*- */
#ifndef FILE_H_
# define FILE_H_
/** @file file.h
* Efficient file abstraction layer.
* Use mmap(2) and friends on Unix systems when USE_MMAP is defined.
* As a portable fall-back method, use <cstdio> FILE pointers.
*/
/* Copyright 2001-2002 Marko Mkel (msmakela@tcs.hut.fi).
This file is part of MARIA, a reachability analyzer and model checker
for high-level Petri nets.
MARIA is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
MARIA is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
The GNU General Public License is often shipped with GNU software, and
is generally kept in a file called COPYING or LICENSE. If you do not
have a copy of the license, write to the Free Software Foundation,
59 Temple Place, Suite 330, Boston, MA 02111 USA. */
# include <stdio.h>
# ifndef unix
# if defined __unix||defined __unix__||defined __NetBSD__||defined __APPLE__
# define unix
# endif
# endif
# if defined unix && defined USE_MMAP
# include <unistd.h>
# ifdef NO_MMAP
# include <stdlib.h>
# else // NO_MMAP
# include <sys/mman.h>
# endif // NO_MMAP
/** File handle */
typedef struct
{
# ifndef NO_MMAP
int fd; /**< UNIX file descriptor */
# endif // !NO_MMAP
long len; /**< used file length in bytes */
long alloc; /**< allocated file length in bytes */
# ifdef __sun
caddr_t addr; /**< address of the mapped memory area */
# else // __sun
void* addr; /**< address of the mapped memory area */
# endif // __sun
} file_t;
# else // __unix && USE_MMAP
# undef USE_MMAP
/** File handle */
typedef FILE* file_t;
# endif // __unix && USE_MMAP
#endif // FILE_H_
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