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static struct pe_watcher_vtbl pe_io_vtbl;
static pe_ring IOWatch;
static int IOWatchCount;
static int IOWatch_OK;
static void pe_sys_io_add (pe_io *ev);
static void pe_sys_io_del (pe_io *ev);
static pe_watcher *pe_io_allocate(HV *stash, SV *temple) {
pe_io *ev;
EvNew(4, ev, 1, pe_io);
ev->base.vtbl = &pe_io_vtbl;
pe_watcher_init(&ev->base, stash, temple);
PE_RING_INIT(&ev->tm.ring, ev);
PE_RING_INIT(&ev->ioring, ev);
ev->fd = -1;
ev->timeout = 0;
ev->handle = &PL_sv_undef;
ev->poll = PE_R;
ev->tm_callback = 0;
ev->tm_ext_data = 0;
WaINVOKE1_off(ev);
WaREPEAT_on(ev);
return (pe_watcher*) ev;
}
static void pe_io_dtor(pe_watcher *_ev) {
pe_io *ev = (pe_io*) _ev;
if (WaTMPERLCB(ev))
SvREFCNT_dec(ev->tm_callback);
PE_RING_DETACH(&ev->ioring);
SvREFCNT_dec(ev->handle);
pe_watcher_dtor(_ev);
EvFree(4, _ev);
}
static char *pe_io_start(pe_watcher *_ev, int repeat) {
STRLEN n_a;
int ok=0;
pe_io *ev = (pe_io*) _ev;
if (SvOK(ev->handle))
ev->fd = pe_sys_fileno(ev->handle, SvPV(ev->base.desc, n_a));
/* On Unix, it is possible to set the 'fd' in C code without
assigning anything to the 'handle'. This should be more
officially supported but maybe it is too unix specific. */
if (ev->fd >= 0 && (ev->poll & ~PE_T)) {
if (!ev->base.callback)
return "without io callback";
PE_RING_UNSHIFT(&ev->ioring, &IOWatch);
pe_sys_io_add(ev);
++IOWatchCount;
IOWatch_OK = 0;
++ok;
}
if (ev->timeout) {
if (!ev->base.callback && !ev->tm_callback) {
assert(!ok);
return "without timeout callback";
}
ev->poll |= PE_T;
ev->tm.at = NVtime() + ev->timeout; /* too early okay */
pe_timeable_start(&ev->tm);
++ok;
} else {
ev->poll &= ~PE_T;
}
return ok? 0 : "because there is nothing to watch";
}
static void pe_io_stop(pe_watcher *_ev) {
pe_io *ev = (pe_io*) _ev;
pe_timeable_stop(&ev->tm);
if (!PE_RING_EMPTY(&ev->ioring)) {
pe_sys_io_del(ev);
PE_RING_DETACH(&ev->ioring);
--IOWatchCount;
IOWatch_OK = 0;
}
}
static void pe_io_alarm(pe_watcher *_wa, pe_timeable *hit) {
pe_io *wa = (pe_io*) _wa;
NV now = NVtime();
NV left = (_wa->cbtime + wa->timeout) - now;
if (left < IntervalEpsilon) {
pe_ioevent *ev;
if (WaREPEAT(wa)) {
wa->tm.at = now + wa->timeout;
pe_timeable_start(&wa->tm);
} else {
wa->timeout = 0; /*RESET*/
}
ev = (pe_ioevent*) (*_wa->vtbl->new_event)(_wa);
++ev->base.hits;
ev->got |= PE_T;
if (wa->tm_callback) {
if (WaTMPERLCB(wa)) {
pe_anyevent_set_perl_cb(&ev->base, wa->tm_callback);
} else {
pe_anyevent_set_cb(&ev->base, wa->tm_callback, wa->tm_ext_data);
}
}
queueEvent((pe_event*) ev);
}
else {
/* ++TimeoutTooEarly;
This branch is normal behavior and does not indicate
poor clock accuracy. */
wa->tm.at = now + left;
pe_timeable_start(&wa->tm);
}
}
static void _io_restart(pe_watcher *ev) {
if (!WaPOLLING(ev)) return;
pe_watcher_off(ev);
pe_watcher_on(ev, 0);
}
static void pe_io_reset_handle(pe_watcher *ev) { /* used by unix_io */
pe_io *io = (pe_io*)ev;
SvREFCNT_dec(io->handle);
io->handle = &PL_sv_undef;
io->fd = -1;
_io_restart(ev);
}
WKEYMETH(_io_poll) {
pe_io *io = (pe_io*)ev;
if (nval) {
int nev = sv_2events_mask(nval, PE_R|PE_W|PE_E|PE_T);
if (io->timeout) nev |= PE_T;
else nev &= ~PE_T;
if (io->poll != nev) {
io->poll = nev;
_io_restart(ev);
}
}
{
dSP;
XPUSHs(sv_2mortal(events_mask_2sv(io->poll)));
PUTBACK;
}
}
WKEYMETH(_io_handle) {
pe_io *io = (pe_io*)ev;
if (nval) {
SV *old = io->handle;
io->handle = SvREFCNT_inc(nval);
SvREFCNT_dec(old);
io->fd = -1;
_io_restart(ev);
}
{
dSP;
XPUSHs(io->handle);
PUTBACK;
}
}
WKEYMETH(_io_timeout) {
pe_io *io = (pe_io*)ev;
if (nval) {
io->timeout = SvOK(nval)? SvNV(nval) : 0; /*undef is ok*/
_io_restart(ev);
}
{
dSP;
XPUSHs(sv_2mortal(newSVnv(io->timeout)));
PUTBACK;
}
}
WKEYMETH(_io_timeout_cb) {
pe_io *io = (pe_io*)ev;
if (nval) {
AV *av;
SV *sv;
SV *old=0;
if (WaTMPERLCB(ev))
old = (SV*) io->tm_callback;
if (!SvOK(nval)) {
WaTMPERLCB_off(ev);
io->tm_callback = 0;
io->tm_ext_data = 0;
} else if (SvROK(nval) && (SvTYPE(sv=SvRV(nval)) == SVt_PVCV)) {
WaTMPERLCB_on(ev);
io->tm_callback = SvREFCNT_inc(nval);
} else if (SvROK(nval) &&
(SvTYPE(av=(AV*)SvRV(nval)) == SVt_PVAV) &&
av_len(av) == 1 &&
!SvROK(sv=*av_fetch(av, 1, 0))) {
WaTMPERLCB_on(ev);
io->tm_callback = SvREFCNT_inc(nval);
} else {
if (SvIV(DebugLevel) >= 2)
sv_dump(sv);
croak("Callback must be a code ref or [$object, $method_name]");
}
if (old)
SvREFCNT_dec(old);
}
{
SV *ret = (WaTMPERLCB(ev)?
(SV*) io->tm_callback :
(io->tm_callback?
sv_2mortal(newSVpvf("<FPTR=0x%x EXT=0x%x>",
io->tm_callback, io->tm_ext_data)) :
&PL_sv_undef));
dSP;
XPUSHs(ret);
PUTBACK;
}
}
static void boot_io() {
pe_watcher_vtbl *vt = &pe_io_vtbl;
memcpy(vt, &pe_watcher_base_vtbl, sizeof(pe_watcher_base_vtbl));
vt->dtor = pe_io_dtor;
vt->start = pe_io_start;
vt->stop = pe_io_stop;
vt->alarm = pe_io_alarm;
PE_RING_INIT(&IOWatch, 0);
IOWatch_OK = 0;
IOWatchCount = 0;
pe_register_vtbl(vt, gv_stashpv("Event::io",1), &ioevent_vtbl);
}
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