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by brian
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/* Copyright (C) 2003 MySQL AB
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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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 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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(uchar**) &verbose, (uchar**) &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(-1); |
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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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