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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_CORO 0 |
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#define CD_TYPE 1 |
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#define CD_OK 2 |
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#define CD_PRIO 3 /* hardcoded in Coro::Event */ |
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#define CD_HITS 4 /* hardcoded in Coro::Event */ |
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#define CD_GOT 5 /* hardcoded in Coro::Event, Coro::Handle */ |
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#define CD_MAX 5 |
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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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SV **cd_coro; |
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|
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SvIV_set (AvARRAY (priv)[CD_PRIO], pe->prio); |
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SvIV_set (AvARRAY (priv)[CD_HITS], pe->hits); |
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|
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if (type == 1) |
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SvIV_set (AvARRAY (priv)[CD_GOT], ((pe_ioevent *)pe)->got); |
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|
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GEventAPI->stop (pe->up, 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_coro = &AvARRAY(priv)[CD_CORO]; |
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if (*cd_coro != &PL_sv_undef) |
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{ |
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AvARRAY (priv)[CD_OK] = &PL_sv_yes; |
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CORO_READY (*cd_coro); |
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SvREFCNT_dec (*cd_coro); |
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*cd_coro = &PL_sv_undef; |
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} |
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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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/* ceding from C means allocating a stack, but we assume this is a rare case */ |
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while (CORO_NREADY) |
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CORO_CEDE; |
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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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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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} |
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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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SV *rv = newRV_noinc ((SV *)priv); |
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|
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av_extend (priv, CD_MAX); |
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AvARRAY (priv)[CD_CORO] = &PL_sv_undef; |
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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_PRIO] = newSViv (0); |
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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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/* make sure Event does not use PERL_MAGIC_uvar, which */ |
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/* we abuse for non-uvar purposes. */ |
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sv_magicext (SvRV (self), rv, PERL_MAGIC_uvar, 0, 0, 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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if (!w->running) |
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GEventAPI->start (w, 1); |
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|
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if (AvARRAY (priv)[CD_CORO] == &PL_sv_undef) |
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AvARRAY (priv)[CD_CORO] = SvREFCNT_inc (CORO_CURRENT); |
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else if (AvARRAY (priv)[CD_CORO] != CORO_CURRENT) |
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croak ("Coro::Event::next can only be called from a single coroutine at a time, caught"); |
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|
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XSRETURN_YES; /* schedule */ |
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} |
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