92 lines
2.3 KiB
C
92 lines
2.3 KiB
C
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// Projectname: SWEB
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// Simple operating system for educational purposes
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//
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// Copyright (C) 2005 Andreas Niederl
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//
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// This program is free software; you can redistribute it and/or
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// modify it under the terms of the GNU General Public License
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// as published by the Free Software Foundation; either version 2
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// of the License, or (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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#pragma once
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#include "types.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* exit value constants
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*
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*/
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#define EXIT_FAILURE -1
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#define EXIT_SUCCESS 0
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/**
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* NULL pointer constant
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*
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*/
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#define NULL 0
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/**
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* parses the given string and returns its value as integer
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* @param string the string for parsing
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* @return the parsed value
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*
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*/
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extern int atoi(const char *string);
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/**
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* parses the given string and returns its value as long
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* @param string the string for parsing
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* @return the parsed value
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*
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*/
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extern long atol(const char *string);
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/**
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* Terminates the program normally, functions registered by atexit() are called
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* in reverse order of their registration, any open file descriptors belonging
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* to the process are closed, any children of the process are inherited by
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* process 1 (init) and the process's parent is sent a SIGCHLD signal.
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* The status value is returned to the parent as exit status and can be
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* collected using a wait call.
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* @param status the exit status of the calling process, 0 or EXIT_SUCCESS for
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* successfull termination, EXIT_FAILURE for unsuccessful termination
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*
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*/
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extern void exit(int status);
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/**
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* register a function to be called at normal process termination
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* @param function the function to be called
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* @return 0 if successful, other-wise non-zero
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*/
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extern int atexit(void (*function)(void));
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extern void *malloc(size_t size);
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extern void *calloc(size_t nmemb, size_t size);
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extern void *realloc(void *ptr, size_t size);
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extern void free(void *ptr);
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#ifdef __cplusplus
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}
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#endif
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