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authorMattias Andrée <maandree@kth.se>2020-09-04 22:18:26 +0200
committerMattias Andrée <maandree@kth.se>2020-09-04 22:18:26 +0200
commitb9afde64d176a93950a2cda9aed118c50c4a19a8 (patch)
treedc32a2476da50df7b197f6121313cc07386c9c7c /mongoclock.c
parentm (diff)
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Add posix time support3.0
Signed-off-by: Mattias Andrée <maandree@kth.se>
Diffstat (limited to 'mongoclock.c')
-rw-r--r--mongoclock.c169
1 files changed, 122 insertions, 47 deletions
diff --git a/mongoclock.c b/mongoclock.c
index 769e9d9..b98cc67 100644
--- a/mongoclock.c
+++ b/mongoclock.c
@@ -80,18 +80,15 @@ print_time(const char ***str, size_t y, size_t x)
fflush(stdout);
}
-int
-main(int argc, char *argv[])
+static int
+display_time(int timerfd)
{
- struct tm *now;
const char **digits[9];
- size_t x = 0, y = 0;
- struct winsize winsize;
int small = 0;
- int fd = -1;
- struct itimerspec itimerspec;
uint64_t _overrun;
- struct sigaction sigact;
+ struct winsize winsize;
+ size_t x = 0, y = 0;
+ struct tm *now;
#ifdef USE_ADJTIMEX
struct timex timex;
int r;
@@ -99,42 +96,12 @@ main(int argc, char *argv[])
time_t now_;
#endif
- ARGBEGIN {
- default:
- usage();
- } ARGEND;
-
- if (argc)
- usage();
-
- fprintf(stdout, "\033[?1049h\033[?25l");
-
- if (clock_gettime(CLOCK_REALTIME, &itimerspec.it_value))
- goto fail;
- itimerspec.it_interval.tv_sec = 1;
- itimerspec.it_interval.tv_nsec = 0;
- itimerspec.it_value.tv_sec += 1;
- itimerspec.it_value.tv_nsec = 0;
- fd = timerfd_create(CLOCK_REALTIME, 0);
- if (fd < 0)
- goto fail;
- if (timerfd_settime(fd, TFD_TIMER_ABSTIME, &itimerspec, NULL))
- goto fail;
-
- memset(&sigact, 0, sizeof(sigact));
-
- sigact.sa_handler = sigterm;
- sigaction(SIGTERM, &sigact, NULL);
- sigaction(SIGQUIT, &sigact, NULL);
- sigaction(SIGINT, &sigact, NULL);
-
- sigact.sa_handler = sigwinch;
- sigaction(SIGWINCH, &sigact, NULL);
-
#ifdef USE_ADJTIMEX
memset(&timex, 0, sizeof(timex));
#endif
+ digits[8] = NULL;
+
while (!caught_sigterm) {
if (caught_sigwinch) {
if (ioctl(STDOUT_FILENO, (unsigned long)TIOCGWINSZ, &winsize) < 0) {
@@ -190,26 +157,134 @@ main(int argc, char *argv[])
digits[5] = small ? NULL : mongo_c;
digits[6] = mongo_ds[now->tm_sec / 10];
digits[7] = mongo_ds[now->tm_sec % 10];
- digits[8] = NULL;
print_time(digits, y, x);
- if (read(fd, &_overrun, sizeof(_overrun)) < 0)
+ if (read(timerfd, &_overrun, sizeof(_overrun)) < 0)
+ if (errno != EINTR)
+ goto fail;
+ }
+
+ return 0;
+
+fail:
+ return -1;
+}
+
+static int
+display_posixtime(int timerfd)
+{
+ const char **digits[21];
+ uint64_t _overrun;
+ struct winsize winsize;
+ size_t w = 0, h = 0, x, y;
+ time_t now;
+ size_t first_digit, ndigits;
+
+ digits[20] = NULL;
+
+ while (!caught_sigterm) {
+ if (caught_sigwinch) {
+ if (ioctl(STDOUT_FILENO, (unsigned long)TIOCGWINSZ, &winsize) < 0) {
+ if (errno == EINTR)
+ continue;
+ goto fail;
+ }
+ caught_sigwinch = 0;
+ h = winsize.ws_row;
+ w = winsize.ws_col;
+ }
+
+ now = time(NULL);
+ if (now < 0)
+ goto fail;
+
+ first_digit = 20;
+ do {
+ if (!first_digit)
+ abort();
+ digits[--first_digit] = mongo_ds[now % 10];
+ } while (now /= 10);
+ ndigits = 20 - first_digit;
+
+ if (h < DY || w < ndigits * DX) {
+ fprintf(stdout, "\033[H\033[2J%s\n", "Screen is too small");
+ fflush(stdout);
+ pause();
+ continue;
+ }
+
+ y = (h - DY) / 2;
+ x = (w - ndigits * DX) / 2;
+ print_time(&digits[first_digit], y, x);
+
+ if (read(timerfd, &_overrun, sizeof(_overrun)) < 0)
if (errno != EINTR)
goto fail;
}
+ return 0;
+
+fail:
+ return -1;
+}
+
+int
+main(int argc, char *argv[])
+{
+ int timerfd = -1;
+ int posixtime = 0;
+ struct itimerspec itimerspec;
+ struct sigaction sigact;
+
+ ARGBEGIN {
+ case 's':
+ posixtime = 1;
+ break;
+ default:
+ usage();
+ } ARGEND;
+
+ if (argc)
+ usage();
+
+ fprintf(stdout, "\033[?1049h\033[?25l");
+
+ if (clock_gettime(CLOCK_REALTIME, &itimerspec.it_value))
+ goto fail;
+ itimerspec.it_interval.tv_sec = 1;
+ itimerspec.it_interval.tv_nsec = 0;
+ itimerspec.it_value.tv_sec += 1;
+ itimerspec.it_value.tv_nsec = 0;
+ timerfd = timerfd_create(CLOCK_REALTIME, 0);
+ if (timerfd < 0)
+ goto fail;
+ if (timerfd_settime(timerfd, TFD_TIMER_ABSTIME, &itimerspec, NULL))
+ goto fail;
+
+ memset(&sigact, 0, sizeof(sigact));
+
+ sigact.sa_handler = sigterm;
+ sigaction(SIGTERM, &sigact, NULL);
+ sigaction(SIGQUIT, &sigact, NULL);
+ sigaction(SIGINT, &sigact, NULL);
+
+ sigact.sa_handler = sigwinch;
+ sigaction(SIGWINCH, &sigact, NULL);
+
+ if (posixtime ? display_posixtime(timerfd) : display_time(timerfd))
+ goto fail;
+
fprintf(stdout, "\033[?25h\n\033[?1049l");
fflush(stdout);
- close(fd);
+ close(timerfd);
return 0;
-
+
fail:
perror(argv0 ? argv0 : "mongoclock");
fprintf(stdout, "\033[?25h\n\033[?1049l");
fflush(stdout);
- if (fd >= 0)
- close(fd);
+ if (timerfd >= 0)
+ close(timerfd);
return 1;
}
-