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#include "EXTERN.h" |
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#include "perl.h" |
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#include "XSUB.h" |
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|
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#include <assert.h> |
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#include <string.h> |
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|
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#include "EventAPI.h" |
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#include "../Coro/CoroAPI.h" |
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|
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#define CD_WAIT 0 /* wait queue */ |
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#define CD_TYPE 1 |
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#define CD_OK 2 |
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#define CD_HITS 3 /* hardcoded in Coro::Event */ |
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#define CD_GOT 4 /* hardcoded in Coro::Event, Coro::Handle */ |
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#define CD_MAX 4 |
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|
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static HV *coro_event_event_stash; |
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|
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#define PERL_MAGIC_coro_event 0x18 /* to avoid clashes with e.g. event */ |
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|
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static void |
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coro_std_cb (pe_event *pe) |
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{ |
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AV *priv = (AV *)pe->ext_data; |
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IV type = SvIV (AvARRAY (priv)[CD_TYPE]); |
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AV *cd_wait; |
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SV *coro; |
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|
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SvIV_set (AvARRAY (priv)[CD_HITS], pe->hits); |
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SvIV_set (AvARRAY (priv)[CD_GOT], type ? ((pe_ioevent *)pe)->got : 0); |
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|
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AvARRAY (priv)[CD_OK] = &PL_sv_yes; |
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|
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cd_wait = (AV *)AvARRAY(priv)[CD_WAIT]; |
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|
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coro = av_shift (cd_wait); |
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if (coro != &PL_sv_undef) |
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{ |
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CORO_READY (coro); |
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SvREFCNT_dec (coro); |
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} |
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|
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if (av_len (cd_wait) < 0) |
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GEventAPI->stop (pe->up, 0); |
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} |
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|
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static void |
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asynccheck_hook (void *data) |
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{ |
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/* this loops as long as we have _other_ coros with the same or higher priority */ |
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while (CORO_NREADY && CORO_CEDE) |
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; |
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} |
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|
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static double |
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prepare_hook (void *data) |
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{ |
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/* this yields once to another coro with any priority */ |
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if (CORO_NREADY) |
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{ |
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CORO_CEDE_NOTSELF; |
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/* |
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* timers might have changed, and Event fails to notice this |
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* so we have to assume the worst. If Event didn't have that bug, |
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* we would only need to do this if CORO_NREADY is != 0 now. |
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*/ |
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return 0.; |
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} |
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else |
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return 85197.73; /* this is as good as any value, but it factors badly with common values */ |
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} |
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|
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MODULE = Coro::Event PACKAGE = Coro::Event |
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|
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PROTOTYPES: ENABLE |
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|
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BOOT: |
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{ |
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coro_event_event_stash = gv_stashpv ("Coro::Event::Event", TRUE); |
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|
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I_EVENT_API ("Coro::Event"); |
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I_CORO_API ("Coro::Event"); |
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|
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GEventAPI->add_hook ("asynccheck", (void *)asynccheck_hook, 0); |
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GEventAPI->add_hook ("prepare", (void *)prepare_hook, 0); |
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} |
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|
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void |
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_install_std_cb (SV *self, int type) |
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CODE: |
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{ |
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pe_watcher *w = GEventAPI->sv_2watcher (self); |
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|
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if (w->callback) |
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croak ("Coro::Event watchers must not have a callback (see Coro::Event), caught"); |
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|
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{ |
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AV *priv = newAV (); |
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|
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av_fill (priv, CD_MAX); |
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AvARRAY (priv)[CD_WAIT] = (SV *)newAV (); /* AV in AV _should_ not be exposed to perl */ |
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AvARRAY (priv)[CD_TYPE] = newSViv (type); |
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AvARRAY (priv)[CD_OK ] = &PL_sv_no; |
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AvARRAY (priv)[CD_HITS] = newSViv (0); |
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AvARRAY (priv)[CD_GOT ] = newSViv (0); |
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SvREADONLY_on (priv); |
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|
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w->callback = coro_std_cb; |
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w->ext_data = priv; |
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|
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sv_magicext (SvRV (self), newRV_noinc ((SV *)priv), PERL_MAGIC_coro_event, 0, w, 0); |
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} |
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} |
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|
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void |
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_next (SV *self) |
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CODE: |
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{ |
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pe_watcher *w = GEventAPI->sv_2watcher (self); |
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AV *priv = (AV *)w->ext_data; |
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|
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if (AvARRAY (priv)[CD_OK] == &PL_sv_yes) |
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{ |
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AvARRAY (priv)[CD_OK] = &PL_sv_no; |
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XSRETURN_NO; /* got an event */ |
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} |
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|
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av_push ((AV *)AvARRAY (priv)[CD_WAIT], SvREFCNT_inc (CORO_CURRENT)); |
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|
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if (!w->running) |
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GEventAPI->start (w, 1); |
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|
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XSRETURN_YES; /* schedule */ |
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} |
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|
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SV * |
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_event (SV *self) |
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CODE: |
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{ |
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if (GIMME_V == G_VOID) |
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XSRETURN_EMPTY; |
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|
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{ |
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pe_watcher *w = GEventAPI->sv_2watcher (self); |
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AV *priv = (AV *)w->ext_data; |
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|
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RETVAL = newRV_inc ((SV *)priv); |
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|
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/* may need to bless it now */ |
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if (!SvOBJECT (priv)) |
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{ |
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SvREADONLY_off ((SV *)priv); |
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sv_bless (RETVAL, coro_event_event_stash); |
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SvREADONLY_on ((SV *)priv); |
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} |
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} |
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} |
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OUTPUT: |
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RETVAL |
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|
