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/*
Copyright (c) 2003, 2010, Oracle and/or its affiliates
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; version 2 of the License.
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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1335 USA */
/* Wait until a program dies */
#include <my_global.h>
#include <m_string.h>
#include <my_sys.h>
#include <my_getopt.h>
#include <signal.h>
#include <errno.h>
static const char *VER= "1.1";
static char *progname;
static my_bool verbose;
void usage(void);
static struct my_option my_long_options[] =
{
{"help", '?', "Display this help and exit.", 0, 0, 0, GET_NO_ARG, NO_ARG, 0,
0, 0, 0, 0, 0},
{"help", 'I', "Synonym for -?.", 0, 0, 0, GET_NO_ARG, NO_ARG, 0,
0, 0, 0, 0, 0},
{"verbose", 'v',
"Be more verbose. Give a warning, if kill can't handle signal 0.",
&verbose, &verbose, 0, GET_BOOL, NO_ARG, 0, 0, 0, 0, 0, 0},
{"version", 'V', "Print version information and exit.", 0, 0, 0,
GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0},
{ 0, 0, 0, 0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0}
};
static my_bool
get_one_option(const struct my_option *opt,
const char *argument __attribute__((unused)),
const char *filename __attribute__((unused)))
{
switch(opt->id) {
case 'V':
printf("%s version %s by Jani Tolonen\n", progname, VER);
exit(0);
case 'I':
case '?':
usage();
exit(0);
}
return 0;
}
int main(int argc, char *argv[])
{
int pid= 0, t= 0, sig= 0;
progname= argv[0];
if (handle_options(&argc, &argv, my_long_options, get_one_option))
exit(-1);
if (!argv[0] || !argv[1] || (pid= atoi(argv[0])) <= 0 ||
(t= atoi(argv[1])) <= 0)
{
usage();
exit(-1);
}
for (; t > 0; t--)
{
if (kill((pid_t) pid, sig))
{
if (errno == EINVAL)
{
if (verbose)
printf("WARNING: kill couldn't handle signal 0, using signal 1.\n");
sig= 1;
t++;
continue;
}
return 0;
}
sleep(1);
}
return 1;
}
void usage(void)
{
printf("%s version %s by Jani Tolonen\n\n", progname, VER);
printf("usage: %s [options] #pid #time\n\n", progname);
printf("Description: Waits for a program, which program id is #pid, to\n");
printf("terminate within #time seconds. If the program terminates within\n");
printf("this time, or if the #pid no longer exists, value 0 is returned.\n");
printf("Otherwise 1 is returned. Both #pid and #time must be positive\n");
printf("integer arguments.\n\n");
printf("Options:\n");
my_print_help(my_long_options);
}
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