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Fixes for BSD where BSD != FreeBSD

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NetBSD and OpenBSD lack NOTE_ABSTIME and NOTE_MSECONDS, so we define
those and create a macro that we use for all timeout values in EV_TIMER
events that will on all BSD excepting FreeBSD change an absolute time
into an interval.
This commit is contained in:
llmII 2021-09-05 20:48:42 -05:00
parent 981f03fef3
commit 604f97aba1
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GPG Key ID: E3AD2E259F58A9A0
1 changed files with 17 additions and 3 deletions
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20
src/core/ev.c
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@ -1575,6 +1575,19 @@ void janet_ev_deinit(void) {
* https://github.com/wahern/cqueues/blob/master/src/lib/kpoll.c
* NetBSD uses intptr_t while others use void * for .udata */
#define EV_SETx(ev, a, b, c, d, e, f) EV_SET((ev), (a), (b), (c), (d), (e), ((__typeof__((ev)->udata))(f)))
#define JANET_KQUEUE_TF (EV_ADD | EV_ENABLE | EV_CLEAR | EV_ONESHOT)
#ifdef __FreeBSD__
#define JANET_KQUEUE_TS(timestamp) (timestamp)
#else
/* NOTE:
* NetBSD and OpenBSD expect things are always intervals, so fake that we have
* abstime capability by changing how a timestamp is used in all kqueue calls
* and defining absent macros. */
#define JANET_KQUEUE_TS(timestamp) (timestamp - ts_now())
#define NOTE_MSECONDS 0
#define NOTE_ABSTIME 0
#endif
/* TODO: make this available be we using kqueue or epoll, instead of
* redefinining it for kqueue and epoll separately? */
@ -1663,8 +1676,9 @@ void janet_loop1_impl(int has_timeout, JanetTimestamp timeout) {
EV_SETx(&timer,
JANET_KQUEUE_TIMER_IDENT,
EVFILT_TIMER,
EV_ADD | EV_ENABLE | EV_CLEAR,
NOTE_MSECONDS | NOTE_ABSTIME, timeout, &janet_vm.timer);
JANET_KQUEUE_TF,
NOTE_MSECONDS | NOTE_ABSTIME,
JANET_KQUEUE_TS(timeout), &janet_vm.timer);
add_kqueue_events(&timer, 1);
}
janet_vm.timer_enabled = has_timeout;
@ -1722,7 +1736,7 @@ void janet_ev_init(void) {
janet_vm.timer_enabled = 0;
if (janet_vm.kq == -1) goto error;
struct kevent events[2];
EV_SETx(&events[0], JANET_KQUEUE_TIMER_IDENT, EVFILT_TIMER, EV_ADD | EV_ENABLE | EV_CLEAR, NOTE_MSECONDS, 0, &janet_vm.timer);
EV_SETx(&events[0], JANET_KQUEUE_TIMER_IDENT, EVFILT_TIMER, JANET_KQUEUE_TF, NOTE_MSECONDS, JANET_KQUEUE_TS(0), &janet_vm.timer);
EV_SETx(&events[1], janet_vm.selfpipe[0], EVFILT_READ, EV_ADD | EV_ENABLE, 0, 0, janet_vm.selfpipe);
add_kqueue_events(events, 2);
return;