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104 lines
2.9 KiB
C
104 lines
2.9 KiB
C
/*
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Copyright (c) 2003, 2010, Oracle and/or its affiliates
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; version 2 of the License.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
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/* Wait until a program dies */
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#include <my_global.h>
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#include <m_string.h>
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#include <my_sys.h>
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#include <my_getopt.h>
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#include <signal.h>
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#include <errno.h>
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static const char *VER= "1.1";
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static char *progname;
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static my_bool verbose;
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void usage(void);
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static struct my_option my_long_options[] =
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{
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{"help", '?', "Display this help and exit.", 0, 0, 0, GET_NO_ARG, NO_ARG, 0,
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0, 0, 0, 0, 0},
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{"help", 'I', "Synonym for -?.", 0, 0, 0, GET_NO_ARG, NO_ARG, 0,
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0, 0, 0, 0, 0},
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{"verbose", 'v',
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"Be more verbose. Give a warning, if kill can't handle signal 0.",
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&verbose, &verbose, 0, GET_BOOL, NO_ARG, 0, 0, 0, 0, 0, 0},
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{"version", 'V', "Print version information and exit.", 0, 0, 0,
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GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0},
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{ 0, 0, 0, 0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0}
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};
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static my_bool
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get_one_option(int optid, const struct my_option *opt __attribute__((unused)),
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char *argument __attribute__((unused)))
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{
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switch(optid) {
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case 'V':
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printf("%s version %s by Jani Tolonen\n", progname, VER);
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exit(0);
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case 'I':
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case '?':
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usage();
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}
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return 0;
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}
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int main(int argc, char *argv[])
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{
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int pid= 0, t= 0, sig= 0;
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progname= argv[0];
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if (handle_options(&argc, &argv, my_long_options, get_one_option))
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exit(-1);
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if (!argv[0] || !argv[1] || (pid= atoi(argv[0])) <= 0 ||
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(t= atoi(argv[1])) <= 0)
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usage();
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for (; t > 0; t--)
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{
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if (kill((pid_t) pid, sig))
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{
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if (errno == EINVAL)
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{
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if (verbose)
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printf("WARNING: kill couldn't handle signal 0, using signal 1.\n");
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sig= 1;
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t++;
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continue;
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}
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return 0;
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}
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sleep(1);
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}
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return 1;
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}
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void usage(void)
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{
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printf("%s version %s by Jani Tolonen\n\n", progname, VER);
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printf("usage: %s [options] #pid #time\n\n", progname);
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printf("Description: Waits for a program, which program id is #pid, to\n");
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printf("terminate within #time seconds. If the program terminates within\n");
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printf("this time, or if the #pid no longer exists, value 0 is returned.\n");
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printf("Otherwise 1 is returned. Both #pid and #time must be positive\n");
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printf("integer arguments.\n\n");
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printf("Options:\n");
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my_print_help(my_long_options);
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exit(-1);
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}
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