diff options
Diffstat (limited to 'utils.c')
| -rw-r--r-- | utils.c | 63 |
1 files changed, 61 insertions, 2 deletions
@@ -851,6 +851,7 @@ xclose (int fd) typedef void (*poller_fd_fn) (const struct pollfd *, void *); typedef void (*poller_timer_fn) (void *); +typedef void (*poller_idle_fn) (void *); #define POLLER_MIN_ALLOC 16 @@ -877,6 +878,16 @@ struct poller_fd void *user_data; ///< User data }; +struct poller_idle +{ + LIST_HEADER (poller_idle) + struct poller *poller; ///< Our poller + bool active; ///< Whether we're on the list + + poller_idle_fn dispatcher; ///< Event dispatcher + void *user_data; ///< User data +}; + // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - struct poller_timers @@ -1023,6 +1034,19 @@ poller_timers_get_poll_timeout (struct poller_timers *self) // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - +static void +poller_idle_dispatch (struct poller_idle *list) +{ + struct poller_idle *iter, *next; + for (iter = list; iter; iter = next) + { + next = iter->next; + iter->dispatcher (iter->user_data); + } +} + +// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - + #ifdef __linux__ #include <sys/epoll.h> @@ -1035,6 +1059,7 @@ struct poller size_t alloc; ///< Number of entries allocated struct poller_timers timers; ///< Timeouts + struct poller_idle *idle; ///< Idle events /// Index of the element in `revents' that's about to be dispatched next. int dispatch_next; @@ -1181,7 +1206,7 @@ poller_run (struct poller *self) int n_fds; do n_fds = epoll_wait (self->epoll_fd, self->revents, self->len, - poller_timers_get_poll_timeout (&self->timers)); + self->idle ? 0 : poller_timers_get_poll_timeout (&self->timers)); while (n_fds == -1 && errno == EINTR); if (n_fds == -1) @@ -1191,6 +1216,7 @@ poller_run (struct poller *self) self->dispatch_total = n_fds; poller_timers_dispatch (&self->timers); + poller_idle_dispatch (self->idle); while (self->dispatch_next < self->dispatch_total) { @@ -1220,6 +1246,7 @@ struct poller size_t alloc; ///< Number of entries allocated struct poller_timers timers; ///< Timers + struct poller_idle *idle; ///< Idle events int dispatch_next; ///< The next dispatched FD or -1 }; @@ -1309,13 +1336,14 @@ poller_run (struct poller *self) int result; do result = poll (self->fds, self->len, - poller_timers_get_poll_timeout (&self->timers)); + self->idle ? 0 : poller_timers_get_poll_timeout (&self->timers)); while (result == -1 && errno == EINTR); if (result == -1) exit_fatal ("%s: %s", "poll", strerror (errno)); poller_timers_dispatch (&self->timers); + poller_idle_dispatch (self->idle); for (int i = 0; i < (int) self->len; ) { @@ -1359,6 +1387,37 @@ poller_timer_reset (struct poller_timer *self) // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - static void +poller_idle_init (struct poller_idle *self, struct poller *poller) +{ + memset (self, 0, sizeof *self); + self->poller = poller; +} + +static void +poller_idle_set (struct poller_idle *self) +{ + if (self->active) + return; + + LIST_PREPEND (self->poller->idle, self); + self->active = true; +} + +static void +poller_idle_reset (struct poller_idle *self) +{ + if (!self->active) + return; + + LIST_UNLINK (self->poller->idle, self); + self->prev = NULL; + self->next = NULL; + self->active = false; +} + +// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - + +static void poller_fd_init (struct poller_fd *self, struct poller *poller, int fd) { memset (self, 0, sizeof *self); |