diff options
Diffstat (limited to 'src/common/timers.c')
| -rw-r--r-- | src/common/timers.c | 50 |
1 files changed, 37 insertions, 13 deletions
diff --git a/src/common/timers.c b/src/common/timers.c index 41b2008ac4..552080b11e 100644 --- a/src/common/timers.c +++ b/src/common/timers.c @@ -1,4 +1,4 @@ -/* Copyright (c) 2016, The Tor Project, Inc. */ +/* Copyright (c) 2016-2017, The Tor Project, Inc. */ /* See LICENSE for licensing information */ /** @@ -29,6 +29,8 @@ #include "orconfig.h" +#define TOR_TIMERS_PRIVATE + #include "compat.h" #include "compat_libevent.h" #include "timers.h" @@ -51,7 +53,7 @@ struct timeout_cb { #else /* We're not exposing any of the functions outside this file. */ #define TIMEOUT_PUBLIC static -#endif +#endif /* defined(__GNUC__) */ /* We're not using periodic events. */ #define TIMEOUT_DISABLE_INTERVALS /* We always know the global_timeouts object, so we don't need each timeout @@ -61,7 +63,7 @@ struct timeout_cb { #define TIMEOUT_CB_OVERRIDE /* We're going to support timers that are pretty far out in advance. Making * this big can be inefficient, but having a significant number of timers - * above TIMEOUT_MAX can also be super-inefficent. Choosing 5 here sets + * above TIMEOUT_MAX can also be super-inefficient. Choosing 5 here sets * timeout_max to 2^30 ticks, or 29 hours with our value for USEC_PER_TICK */ #define WHEEL_NUM 5 #include "src/ext/timeouts/timeout.c" @@ -148,6 +150,21 @@ libevent_timer_reschedule(void) event_add(global_timer_event, &d); } +/** Run the callback of every timer that has expired, based on the current + * output of monotime_get(). */ +STATIC void +timers_run_pending(void) +{ + monotime_t now; + monotime_get(&now); + timer_advance_to_cur_time(&now); + + tor_timer_t *t; + while ((t = timeouts_get(global_timeouts))) { + t->callback.cb(t, t->callback.arg, &now); + } +} + /** * Invoked when the libevent timer has expired: see which tor_timer_t events * have fired, activate their callbacks, and reschedule the libevent timer. @@ -159,14 +176,7 @@ libevent_timer_callback(evutil_socket_t fd, short what, void *arg) (void)what; (void)arg; - monotime_t now; - monotime_get(&now); - timer_advance_to_cur_time(&now); - - tor_timer_t *t; - while ((t = timeouts_get(global_timeouts))) { - t->callback.cb(t, t->callback.arg, &now); - } + timers_run_pending(); libevent_timer_reschedule(); } @@ -181,7 +191,7 @@ timers_initialize(void) if (BUG(global_timeouts)) return; // LCOV_EXCL_LINE - timeout_error_t err; + timeout_error_t err = 0; global_timeouts = timeouts_open(0, &err); if (!global_timeouts) { // LCOV_EXCL_START -- this can only fail on malloc failure. @@ -235,7 +245,7 @@ timer_new(timer_cb_fn_t cb, void *arg) * scheduled. */ void -timer_free(tor_timer_t *t) +timer_free_(tor_timer_t *t) { if (! t) return; @@ -255,6 +265,20 @@ timer_set_cb(tor_timer_t *t, timer_cb_fn_t cb, void *arg) } /** + * Set *<b>cb_out</b> (if provided) to this timer's callback function, + * and *<b>arg_out</b> (if provided) to this timer's callback argument. + */ +void +timer_get_cb(const tor_timer_t *t, + timer_cb_fn_t *cb_out, void **arg_out) +{ + if (cb_out) + *cb_out = t->callback.cb; + if (arg_out) + *arg_out = t->callback.arg; +} + +/** * Schedule the timer t to fire at the current time plus a delay of * <b>delay</b> microseconds. All times are relative to monotime_get(). */ |