testopenf.c (1549B)
1 // $Id$ 2 3 // Copyright (C) 2003 Enrico Scholz <enrico.scholz@informatik.tu-chemnitz.de> 4 // based on tests/testopenf.cc by Jacques Gelinas 5 // 6 // This program is free software; you can redistribute it and/or modify 7 // it under the terms of the GNU General Public License as published by 8 // the Free Software Foundation; either version 2, or (at your option) 9 // any later version. 10 // 11 // This program is distributed in the hope that it will be useful, 12 // but WITHOUT ANY WARRANTY; without even the implied warranty of 13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 // GNU General Public License for more details. 15 // 16 // You should have received a copy of the GNU General Public License 17 // along with this program; if not, write to the Free Software 18 // Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. 19 20 #include <stdio.h> 21 #include <stdlib.h> 22 #include <sys/wait.h> 23 #include <string.h> 24 #include <errno.h> 25 #include <unistd.h> 26 27 int main (int argc, char *argv[]) 28 { 29 if (argc != 3){ 30 fprintf (stderr,"testlimit nbprocess nbopen\n"); 31 }else{ 32 int nbproc = atoi(argv[1]); 33 int nbopen = atoi(argv[2]); 34 int i; 35 int status; 36 for (i=0; i<nbproc; i++){ 37 if (fork()==0){ 38 int j; 39 for (j=0; j<nbopen; j++){ 40 FILE *fin = fopen ("/proc/self/status","r"); 41 if (fin == NULL){ 42 fprintf (stderr,"Can't open %d (%s)\n",errno,strerror(errno)); 43 break; 44 } 45 } 46 printf ("%d open files, sleeping\n",j); 47 sleep (100); 48 _exit (0); 49 } 50 } 51 while (wait(&status)!=-1); 52 } 53 return 0; 54 } 55