alaffin | cc2e555 | 2000-07-27 17:13:18 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2000 Silicon Graphics, Inc. All Rights Reserved. |
| 3 | * |
| 4 | * This program is free software; you can redistribute it and/or modify it |
| 5 | * under the terms of version 2 of the GNU General Public License as |
| 6 | * published by the Free Software Foundation. |
| 7 | * |
| 8 | * This program is distributed in the hope that it would be useful, but |
| 9 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
| 10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. |
| 11 | * |
| 12 | * Further, this software is distributed without any warranty that it is |
| 13 | * free of the rightful claim of any third person regarding infringement |
| 14 | * or the like. Any license provided herein, whether implied or |
| 15 | * otherwise, applies only to this software file. Patent licenses, if |
| 16 | * any, provided herein do not apply to combinations of this program with |
| 17 | * other software, or any other product whatsoever. |
| 18 | * |
| 19 | * You should have received a copy of the GNU General Public License along |
| 20 | * with this program; if not, write the Free Software Foundation, Inc., 59 |
| 21 | * Temple Place - Suite 330, Boston MA 02111-1307, USA. |
| 22 | * |
| 23 | * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy, |
| 24 | * Mountain View, CA 94043, or: |
| 25 | * |
| 26 | * http://www.sgi.com |
| 27 | * |
| 28 | * For further information regarding this notice, see: |
| 29 | * |
| 30 | * http://oss.sgi.com/projects/GenInfo/NoticeExplan/ |
| 31 | */ |
| 32 | #ifndef _FORKER_H_ |
| 33 | #define _FORKER_H_ |
| 34 | |
alaffin | 489cc7f | 2000-07-31 21:51:51 +0000 | [diff] [blame] | 35 | #define FORKER_MAX_PIDS 4098 |
alaffin | cc2e555 | 2000-07-27 17:13:18 +0000 | [diff] [blame] | 36 | |
alaffin | 489cc7f | 2000-07-31 21:51:51 +0000 | [diff] [blame] | 37 | extern int Forker_pids[FORKER_MAX_PIDS]; /* holds pids of forked processes */ |
alaffin | cc2e555 | 2000-07-27 17:13:18 +0000 | [diff] [blame] | 38 | extern int Forker_npids; /* number of entries in Forker_pids */ |
| 39 | |
| 40 | /* |
| 41 | * This function will fork and the parent will exit zero and |
| 42 | * the child will return. This will orphan the returning process |
| 43 | * putting it in the background. |
| 44 | */ |
| 45 | int background( char * ); |
| 46 | |
| 47 | /* |
| 48 | * Forker will fork ncopies-1 copies of self. |
| 49 | * |
| 50 | * arg 1: Number of copies of the process to be running after return. |
| 51 | * This value minus one is the number of forks performed. |
| 52 | * arg 2: mode: 0 - all children are first generation descendents. |
| 53 | * 1 - each subsequent child is a descendent of another |
| 54 | * descendent, resulting in only one direct descendent of the |
| 55 | * parent and each other child is a child of another child in |
| 56 | * relation to the parent. |
| 57 | * arg 3: prefix: string to preceed any error messages. A value of NULL |
| 58 | * results in no error messages on failure. |
| 59 | * returns: returns to parent the number of children forked. |
| 60 | */ |
| 61 | int forker( int , int , char * ); |
| 62 | |
| 63 | #endif /* _FORKER_H_ */ |