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static struct pe_watcher_vtbl pe_group_vtbl;
static pe_watcher *pe_group_allocate(HV *stash, SV *temple) {
pe_group *ev;
EvNew(12, ev, 1, pe_group);
ev->base.vtbl = &pe_group_vtbl;
PE_RING_INIT(&ev->tm.ring, ev);
ev->tm.at = 0;
ev->timeout = &PL_sv_undef;
ev->members = 3;
EvNew(13, ev->member, ev->members, pe_watcher*);
Zero(ev->member, ev->members, pe_watcher*);
pe_watcher_init(&ev->base, stash, temple);
WaREPEAT_on(ev);
return (pe_watcher*) ev;
}
static void pe_group_dtor(pe_watcher *ev) {
int xx;
pe_group *gp = (pe_group*) ev;
SvREFCNT_dec(gp->timeout);
for (xx=0; xx < gp->members; xx++) {
pe_watcher *mb = gp->member[xx];
if (mb)
--mb->refcnt;
}
EvFree(13, gp->member);
pe_watcher_dtor(ev);
EvFree(12, ev);
}
static char *pe_group_start(pe_watcher *ev, int repeat) {
pe_group *gp = (pe_group*) ev;
NV timeout;
if (!ev->callback)
return "without callback";
if (!sv_2interval("group", gp->timeout, &timeout))
return "repeating group has no timeout";
gp->since = WaHARD(ev)? gp->tm.at : NVtime();
gp->tm.at = timeout + gp->since;
pe_timeable_start(&gp->tm);
return 0;
}
static void pe_group_stop(pe_watcher *ev)
{ pe_timeable_stop(&((pe_group*)ev)->tm); }
static void pe_group_alarm(pe_watcher *wa, pe_timeable *tm) {
STRLEN n_a;
pe_group *gp = (pe_group*) wa;
NV timeout;
NV remaining;
NV now = NVtime();
int xx;
for (xx=0; xx < gp->members; xx++) {
pe_watcher *mb = gp->member[xx];
if (!mb) continue;
if (gp->since < mb->cbtime) {
gp->since = mb->cbtime;
}
}
if (!sv_2interval("group", gp->timeout, &timeout))
croak("Event: can't extract timeout"); /* impossible */
remaining = gp->since + timeout - now;
if (remaining > IntervalEpsilon) {
gp->tm.at = now + remaining;
pe_timeable_start(&gp->tm);
} else {
pe_event *ev = (*wa->vtbl->new_event)(wa);
++ev->hits;
queueEvent(ev);
}
}
/* publish C API XXX */
static void pe_group_add(pe_group *gp, pe_watcher *wa) {
int ok=0;
int xx;
if (gp == (pe_group*) wa) {
STRLEN n_a;
croak("Event: can't add group '%s' to itself",
SvPV(gp->base.desc, n_a));
}
++wa->refcnt;
for (xx=0; xx < gp->members; xx++) {
if (!gp->member[xx]) {
gp->member[xx] = wa;
ok=1; break;
}
}
if (!ok) { /* expand array */
pe_watcher **ary;
EvNew(13, ary, gp->members*2, pe_watcher*);
Zero(ary, gp->members*2, pe_watcher*);
Copy(gp->member, ary, gp->members, sizeof(pe_watcher*));
EvFree(13, gp->member);
gp->member = ary;
gp->member[gp->members] = wa;
gp->members *= 2;
}
}
static void pe_group_del(pe_group *gp, pe_watcher *target) {
int xx;
for (xx=0; xx < gp->members; xx++) {
if (gp->member[xx] != target)
continue;
--target->refcnt;
gp->member[xx] = 0;
break;
}
}
WKEYMETH(_group_timeout) {
pe_group *gp = (pe_group*)ev;
if (nval) {
SV *old = gp->timeout;
gp->timeout = SvREFCNT_inc(nval);
SvREFCNT_dec(old);
VERIFYINTERVAL("group", gp->timeout);
/* recalc expiration XXX */
}
{
dSP;
XPUSHs(gp->timeout);
PUTBACK;
}
}
WKEYMETH(_group_add) {
pe_group *gp = (pe_group*)ev;
if (!nval)
return;
pe_group_add(gp, sv_2watcher(nval));
}
WKEYMETH(_group_del) {
pe_group *gp = (pe_group*)ev;
if (!nval)
return;
pe_group_del(gp, sv_2watcher(nval));
}
static void boot_group() {
pe_watcher_vtbl *vt = &pe_group_vtbl;
memcpy(vt, &pe_watcher_base_vtbl, sizeof(pe_watcher_base_vtbl));
vt->dtor = pe_group_dtor;
vt->start = pe_group_start;
vt->stop = pe_group_stop;
vt->alarm = pe_group_alarm;
pe_register_vtbl(vt, gv_stashpv("Event::group",1), &event_vtbl);
}
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