/usr/src/blcr-0.8.2/vmadump4/vmadstress.c is in blcr-dkms 0.8.2-15ubuntu2.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 | /*-------------------------------------------------------------------------
* vmadtest.c: vmadump test program
*
* Copyright (C) 1999-2001 by Erik Hendriks <erik@hendriks.cx>
*
* This program 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 of the License, or
* (at your option) any later version.
*
* This program 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* $Id: vmadstress.c,v 1.3 2004/12/07 22:20:35 phargrov Exp $
*-----------------------------------------------------------------------*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <fcntl.h>
#include <unistd.h>
#include <signal.h>
#include <errno.h>
#include "vmadump.h"
#define GROWCHUNK 10240
#define DEFAULT_FILE "dump"
#if HAVE_BINFMT_VMADUMP
#define DUMPMODE 0777
#else
#define DUMPMODE 0666
#endif
#ifdef __NR_vmadump
int vmadump(int fd, int flags) {
return syscall(__NR_vmadump, VMAD_DO_DUMP, fd, flags);
}
int vmaundump(int fd) {
return syscall(__NR_vmadump, VMAD_DO_UNDUMP, fd);
}
#else
#include <sys/bproc.h>
int vmadump(int fd, int flags) {
return bproc_dump(fd, flags);
}
int vmaundump(int fd) {
return bproc_undump(fd);
}
#endif
void test_mm(void) {
fprintf(stderr, "Testing basic memory ops like growing my stack\n"
"and malloc'ing new RAM.\n");
while(1) {
char *foo;
foo = alloca(GROWCHUNK);
memset(foo, 0, GROWCHUNK);
fprintf(stderr, "."); fflush(stderr);
foo = malloc(GROWCHUNK);
memset(foo, 0, GROWCHUNK);
fprintf(stderr, "+"); fflush(stderr);
sleep(1); /* lets not use all memory instantly, ok? */
}
}
int do_dump(char *filename, int flags) {
int fd, r;
fd = open(filename, O_WRONLY|O_CREAT|O_TRUNC, DUMPMODE);
if (fd == -1) { perror("open"); exit(1); }
r = vmadump(fd,flags);
if (r == -1) {
perror("VMAD_DO_DUMP");
exit(1);
}
close(fd);
return r;
}
void do_undump(char *filename) {
int fd, r;
fd = open(filename, O_RDONLY);
if (fd == -1) { perror("open"); exit(1); }
r = vmaundump(fd);
/* not reached if no error */
perror("VMAD_DO_DUMP");
exit(1);
}
void usage(char *arg0) {
printf(
"Usage: %s -d [-f file] [-e] [-l] [-o]\n"
" %s -u [-f file]\n"
"\n"
" This program is a simple test program for the Beowulf VMAdump\n"
" system. It will try to dump itself (with -d) or restore a dump\n"
" with -u.\n"
"\n"
" -f file Dump to/from file instead of the default (%s)\n"
"\n"
" The following options only affect dumping. (-d)\n"
" -e Use VMAD_DUMP_EXEC flag.\n"
" -l Use VMAD_DUMP_LIBS flag.\n"
" -o Use VMAD_DUMP_OTHER flag.\n"
, arg0, arg0, DEFAULT_FILE);
}
int main(int argc, char *argv[]) {
int c;
int dump_flags = 0;
char *filename = DEFAULT_FILE;
while ((c=getopt(argc, argv, "hvf:elo")) != EOF) {
switch (c) {
case 'h':
case 'v': usage(argv[0]); exit(0);
case 'f': filename = optarg; break;
case 'e': dump_flags |= VMAD_DUMP_EXEC; break;
case 'l': dump_flags |= VMAD_DUMP_LIBS; break;
case 'o': dump_flags |= VMAD_DUMP_OTHER; break;
default: exit(1);
}
}
while (1) {
int r;
printf("Doing vmadump(\"%s\", 0x%x)=", filename, dump_flags); fflush(stdout);
r = do_dump(filename, dump_flags);
if (r > 0) {
printf("%d\n", r);
printf("Doing vmaundump(\"%s\")\n", filename);
fflush(stdout);
do_undump(filename);
/* not reached */
}
close(3); /* hack to deal with the lack of close_on_exec */
}
}
/*
* Local variables:
* c-basic-offset: 4
* End:
*/
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