74 lines
1.4 KiB
C
74 lines
1.4 KiB
C
#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <unistd.h>
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#include <signal.h>
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#include <errno.h>
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#include <time.h>
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#include <sys/time.h>
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char *
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gettime(char *buf, struct timeval *tv)
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{
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struct tm *tm;
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gettimeofday(tv, NULL);
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tm = localtime(&tv->tv_sec);
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sprintf(buf, "%02d:%02d:%02d.%06d", tm->tm_hour, tm->tm_min, tm->tm_sec, tv->tv_usec);
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return buf;
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}
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void
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tv_sub(struct timeval *tv1, const struct timeval *tv2)
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{
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tv1->tv_sec -= tv2->tv_sec;
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tv1->tv_usec -= tv2->tv_usec;
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if (tv1->tv_usec < 0) {
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tv1->tv_sec--;
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tv1->tv_usec += 1000000;
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}
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}
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struct timeval tv1;
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struct timeval tv2;
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void
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sig(int s)
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{
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char buf[16];
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fprintf(stderr, "%s signal hanlder is called\n", gettime(buf, &tv2));
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}
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int
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main(int argc, char **argv)
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{
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struct sigaction act;
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int fds[2];
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char c;
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int rc;
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char buf[16];
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memset(&act, '\0', sizeof act);
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act.sa_handler = sig;
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sigaction(SIGALRM, &act, NULL);
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fprintf(stderr, "%s test start, kill after 3 seconds\n", gettime(buf, &tv1));
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alarm(3);
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pipe(fds);
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rc = read(fds[0], &c, 1);
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if (rc != -1) {
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fprintf(stderr, "CT2001 NG BAD read rc=%d\n", rc);
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exit(1);
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}
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if (errno != EINTR) {
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fprintf(stderr, "CT2001 NG BAD error errno=%d\n", errno);
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exit(1);
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}
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tv_sub(&tv2, &tv1);
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if (tv2.tv_sec != 3)
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fprintf(stderr, "CT2001 NG signal delayed (%d.%06d)\n", tv2.tv_sec, tv2.tv_usec);
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else
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fprintf(stderr, "CT2001 OK\n");
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exit(0);
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}
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