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., 21 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 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 35 #define FORKER_MAX_PIDS 4098 36 37 extern int Forker_pids[FORKER_MAX_PIDS]; /* holds pids of forked processes */ 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_ */ 64
