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authorLukas Larsson <[email protected]>2018-10-18 10:25:31 +0200
committerLukas Larsson <[email protected]>2018-12-03 13:33:53 +0100
commitd4440ce1793638f8daca35a32936d3005cc3be7a (patch)
tree02debd4e39d6d79c11c1606b0648c28dd0abb758 /erts/emulator/beam
parent4f68b86b22806fb052def64926ae7340facaed53 (diff)
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erts: Optimize driver_set_timer(0) to fire at once
By optimizing driver_set_timer for 0 we can use it instead of select to do a yield in the driver. Use full for delay_send in the inet driver. OTP-15472
Diffstat (limited to 'erts/emulator/beam')
-rw-r--r--erts/emulator/beam/erl_hl_timer.c26
1 files changed, 17 insertions, 9 deletions
diff --git a/erts/emulator/beam/erl_hl_timer.c b/erts/emulator/beam/erl_hl_timer.c
index 6ec6f8065e..ef7a55fa38 100644
--- a/erts/emulator/beam/erl_hl_timer.c
+++ b/erts/emulator/beam/erl_hl_timer.c
@@ -3041,15 +3041,23 @@ erts_set_port_timer(Port *c_prt, Sint64 tmo)
check_canceled_queue(esdp, esdp->timer_service);
- timeout_pos = get_timeout_pos(erts_get_monotonic_time(esdp), tmo);
-
- create_timer = (tmo < ERTS_TIMER_WHEEL_MSEC
- ? create_tw_timer
- : create_hl_timer);
- tmr = (void *) create_timer(esdp, timeout_pos, 0, ERTS_TMR_PORT,
- (void *) c_prt, c_prt->common.id,
- THE_NON_VALUE, NULL, NULL, NULL);
- erts_atomic_set_relb(&c_prt->common.timer, (erts_aint_t) tmr);
+ if (tmo == 0) {
+ erts_atomic_set_relb(&c_prt->common.timer, ERTS_PTMR_TIMEDOUT);
+ erts_port_task_schedule(c_prt->common.id,
+ &c_prt->timeout_task,
+ ERTS_PORT_TASK_TIMEOUT);
+ } else {
+
+ timeout_pos = get_timeout_pos(erts_get_monotonic_time(esdp), tmo);
+
+ create_timer = (tmo < ERTS_TIMER_WHEEL_MSEC
+ ? create_tw_timer
+ : create_hl_timer);
+ tmr = (void *) create_timer(esdp, timeout_pos, 0, ERTS_TMR_PORT,
+ (void *) c_prt, c_prt->common.id,
+ THE_NON_VALUE, NULL, NULL, NULL);
+ erts_atomic_set_relb(&c_prt->common.timer, (erts_aint_t) tmr);
+ }
}
void