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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 <string.h> |
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|
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/* this useful idiom is unfortunately missing... */ |
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static void |
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confess (const char *msg) |
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{ |
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dSP; |
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|
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PUSHMARK(SP); |
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XPUSHs (sv_2mortal(newSVpv("only one coroutine can wait for an event at any given time",0))); |
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PUTBACK; |
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call_pv ("Carp::confess", G_VOID); |
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} |
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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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#ifndef PE_PERLCB |
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# define PE_PERLCB 0x020 /* not public, but we need it :( */ |
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#endif |
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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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#define EV_CLASS "Coro::Event" |
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|
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static pe_idle *scheduler; |
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static int do_schedule; |
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|
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#define NEED_SCHEDULE if (!do_schedule) \ |
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{ \ |
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do_schedule = 1; \ |
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GEventAPI->now ((pe_watcher *)scheduler); \ |
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} |
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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 (*av_fetch (priv, CD_TYPE, 1)); |
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SV **cd_coro = &AvARRAY(priv)[CD_CORO]; |
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|
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sv_setiv (AvARRAY(priv)[CD_PRIO], pe->prio); |
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sv_setiv (AvARRAY(priv)[CD_HITS], pe->hits); |
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|
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if (type == 1) |
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sv_setiv (AvARRAY(priv)[CD_GOT], ((pe_ioevent *)pe)->got); |
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|
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if (*cd_coro != &PL_sv_undef) |
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{ |
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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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NEED_SCHEDULE; |
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} |
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else |
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{ |
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AvARRAY(priv)[CD_OK] = &PL_sv_yes; |
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GEventAPI->stop (pe->up, 0); |
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} |
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} |
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|
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static void |
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scheduler_cb(pe_event *pe) |
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{ |
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while (CORO_NREADY) |
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CORO_CEDE; |
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|
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do_schedule = 0; |
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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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/* create a fake idle handler (we only ever call now) */ |
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scheduler = GEventAPI->new_idle (0, 0); |
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scheduler->base.callback = scheduler_cb; |
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scheduler->base.prio = PE_PRIO_NORMAL; /* StarvePrio */ |
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scheduler->min_interval = newSVnv (0); |
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scheduler->max_interval = newSVnv (0); |
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GEventAPI->stop ((pe_watcher *)scheduler, 0); |
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} |
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|
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void |
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_install_std_cb(self,type) |
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SV * self |
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int type |
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CODE: |
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pe_watcher *w = GEventAPI->sv_2watcher (self); |
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|
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if (WaFLAGS (w) & PE_PERLCB) |
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croak ("Coro::Event watchers must not have a perl callback (see Coro::Event), caught"); |
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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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av_store (priv, CD_CORO, &PL_sv_undef); |
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av_store (priv, CD_TYPE, newSViv (type)); |
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av_store (priv, CD_OK , &PL_sv_no); |
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av_store (priv, CD_PRIO, newSViv (0)); |
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av_store (priv, CD_HITS, newSViv (0)); |
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av_store (priv, CD_GOT , type ? newSViv (0) : &PL_sv_undef); |
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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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hv_store ((HV *)SvRV (self), |
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EV_CLASS, strlen (EV_CLASS), |
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rv, 0); |
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|
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GEventAPI->start (w, 0); |
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} |
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|
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void |
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_next(self) |
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SV * self |
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CODE: |
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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 (!w->running) |
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GEventAPI->start (w, 1); |
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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; |
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} |
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else |
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{ |
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if (AvARRAY(priv)[CD_CORO] != &PL_sv_undef) |
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confess ("only one coroutine can wait for an event"); |
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|
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AvARRAY(priv)[CD_CORO] = SvREFCNT_inc (CORO_CURRENT); |
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XSRETURN_YES; |
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} |
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|
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MODULE = Coro::Event PACKAGE = Coro |
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|
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# overwrite the ready function |
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void |
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ready(self) |
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SV * self |
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PROTOTYPE: $ |
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CODE: |
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NEED_SCHEDULE; |
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CORO_READY (self); |
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|
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