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Comparing Coro/Event/Event.xs (file contents):
Revision 1.4 by root, Fri Aug 17 03:33:00 2001 UTC vs.
Revision 1.23 by root, Tue Oct 9 22:29:27 2007 UTC

1#include "EXTERN.h" 1#include "EXTERN.h"
2#include "perl.h" 2#include "perl.h"
3#include "XSUB.h" 3#include "XSUB.h"
4 4
5#include <assert.h>
5#include <string.h> 6#include <string.h>
6 7
7#include "EventAPI.h" 8#include "EventAPI.h"
8#include "../Coro/CoroAPI.h" 9#include "../Coro/CoroAPI.h"
9 10
10#define CD_CORO 0 11#define CD_WAIT 0 /* wait queue */
11#define CD_TYPE 1 12#define CD_TYPE 1
12#define CD_OK 2 13#define CD_OK 2
14#define CD_HITS 3 /* hardcoded in Coro::Event */
13#define CD_GOT 3 /* hardcoded in Coro::Event, Coro::Handle */ 15#define CD_GOT 4 /* hardcoded in Coro::Event, Coro::Handle */
14#define CD_MAX 3 16#define CD_MAX 4
15/* no support for hits and prio so far. */
16 17
17#define EV_CLASS "Coro::Event" 18static HV *coro_event_event_stash;
18 19
19static pe_idle *scheduler; 20#define PERL_MAGIC_coro_event 0x18 /* to avoid clashes with e.g. event */
20static int do_schedule;
21
22#define NEED_SCHEDULE if (!do_schedule) \
23 { \
24 do_schedule = 1; \
25 GEventAPI->now ((pe_watcher *)scheduler); \
26 }
27 21
28static void 22static void
29coro_std_cb(pe_event *pe) 23coro_std_cb (pe_event *pe)
30{ 24{
31 AV *priv = (AV *)SvRV ((SV *)pe->ext_data); 25 AV *priv = (AV *)pe->ext_data;
32 IV type = SvIV (*av_fetch (priv, CD_TYPE, 1)); 26 IV type = SvIV (AvARRAY (priv)[CD_TYPE]);
33 SV *cd_coro = *av_fetch (priv, CD_CORO, 1); 27 AV *cd_wait;
28 SV *coro;
34 29
35 if (type == 1) 30 SvIV_set (AvARRAY (priv)[CD_HITS], pe->hits);
36 av_store (priv, CD_GOT, newSViv (((pe_ioevent *)pe)->got)); 31 SvIV_set (AvARRAY (priv)[CD_GOT], type ? ((pe_ioevent *)pe)->got : 0);
37 32
38 if (SvROK (cd_coro)) 33 AvARRAY (priv)[CD_OK] = &PL_sv_yes;
34
35 cd_wait = (AV *)AvARRAY(priv)[CD_WAIT];
36
37 coro = av_shift (cd_wait);
38 if (coro != &PL_sv_undef)
39 { 39 {
40 CORO_READY (cd_coro); 40 CORO_READY (coro);
41 av_store (priv, CD_CORO, &PL_sv_undef); 41 SvREFCNT_dec (coro);
42 NEED_SCHEDULE;
43 } 42 }
44 else 43
45 { 44 if (av_len (cd_wait) < 0)
46 av_store (priv, CD_OK, &PL_sv_yes);
47 GEventAPI->stop (pe->up, 0); 45 GEventAPI->stop (pe->up, 0);
48 }
49} 46}
50 47
51static void 48static void
52scheduler_cb(pe_event *pe) 49asynccheck_hook (void *data)
53{ 50{
51 /* this loops as long as we have _other_ coros with the same or higher priority */
54 while (CORO_NREADY) 52 while (CORO_NREADY && CORO_CEDE)
55 CORO_CEDE; 53 ;
54}
56 55
57 do_schedule = 0; 56static double
57prepare_hook (void *data)
58{
59 /* this yields once to another coro with any priority */
60 if (CORO_NREADY)
61 {
62 CORO_CEDE_NOTSELF;
63 /*
64 * timers might have changed, and Event fails to notice this
65 * so we have to assume the worst. If Event didn't have that bug,
66 * we would only need to do this if CORO_NREADY is != 0 now.
67 */
68 return 0.;
69 }
70 else
71 return 85197.73; /* this is as good as any value, but it factors badly with common values */
72}
73
74static SV *
75event_next (SV *watcher, int cancel, int wantev)
76{
77 pe_watcher *w = GEventAPI->sv_2watcher (watcher);
78 AV *priv = (AV *)w->ext_data;
79
80 if (AvARRAY (priv)[CD_OK] == &PL_sv_yes)
81 {
82 AvARRAY (priv)[CD_OK] = &PL_sv_no;
83
84 if (cancel)
85 GEventAPI->cancel (w);
86
87 if (wantev)
88 {
89 SV *ev = newRV_inc ((SV *)priv);
90
91 /* may need to bless it now */
92 if (!SvOBJECT (priv))
93 {
94 SvREADONLY_off ((SV *)priv);
95 sv_bless (ev, coro_event_event_stash);
96 SvREADONLY_on ((SV *)priv);
97 }
98
99 return sv_2mortal (ev);
100 }
101 else
102 return &PL_sv_undef;
103 }
104
105 av_push ((AV *)AvARRAY (priv)[CD_WAIT], SvREFCNT_inc (CORO_CURRENT));
106
107 if (!w->running)
108 GEventAPI->start (w, 1);
109
110 return 0; /* schedule */
58} 111}
59 112
60MODULE = Coro::Event PACKAGE = Coro::Event 113MODULE = Coro::Event PACKAGE = Coro::Event
61 114
62PROTOTYPES: ENABLE 115PROTOTYPES: ENABLE
63 116
64BOOT: 117BOOT:
65{ 118{
119 coro_event_event_stash = gv_stashpv ("Coro::Event::Event", TRUE);
120
66 I_EVENT_API("Coro::Event"); 121 I_EVENT_API ("Coro::Event");
67 I_CORO_API ("Coro::Event"); 122 I_CORO_API ("Coro::Event");
68 123
69 /* create a fake idle handler (we only ever call now) */ 124 GEventAPI->add_hook ("asynccheck", (void *)asynccheck_hook, 0);
70 scheduler = GEventAPI->new_idle (0, 0); 125 GEventAPI->add_hook ("prepare", (void *)prepare_hook, 0);
71 scheduler->base.callback = scheduler_cb; 126
72 scheduler->min_interval = newSVnv (0); 127 GCoroAPI->coro_event_next = event_next;
73 scheduler->max_interval = newSVnv (0);
74 GEventAPI->stop ((pe_watcher *)scheduler, 0);
75} 128}
76 129
77void 130void
78_install_std_cb(self,type) 131_install_std_cb (SV *self, int type)
79 SV * self
80 int type
81 CODE: 132 CODE:
133{
82 pe_watcher *w = GEventAPI->sv_2watcher (self); 134 pe_watcher *w = GEventAPI->sv_2watcher (self);
83 AV *priv = newAV ();
84 SV *rv = newRV_noinc ((SV *)priv);
85 135
86 av_extend (priv, CD_MAX); 136 if (w->callback)
87 av_store (priv, CD_TYPE, newSViv (type)); 137 croak ("Coro::Event watchers must not have a callback (see Coro::Event), caught");
88 138
89 w->callback = coro_std_cb; 139 {
90 w->ext_data = rv; 140 AV *priv = newAV ();
91 141
92 hv_store ((HV *)SvRV (self), 142 av_fill (priv, CD_MAX);
93 EV_CLASS, strlen (EV_CLASS), 143 AvARRAY (priv)[CD_WAIT] = (SV *)newAV (); /* AV in AV _should_ not be exposed to perl */
94 rv, 0); 144 AvARRAY (priv)[CD_TYPE] = newSViv (type);
145 AvARRAY (priv)[CD_OK ] = &PL_sv_no;
146 AvARRAY (priv)[CD_HITS] = newSViv (0);
147 AvARRAY (priv)[CD_GOT ] = newSViv (0);
148 SvREADONLY_on (priv);
95 149
96void 150 w->callback = coro_std_cb;
97_next(self) 151 w->ext_data = priv;
98 SV * self
99 CODE:
100 pe_watcher *w = GEventAPI->sv_2watcher (self);
101 AV *priv = (AV *)SvRV ((SV *)w->ext_data);
102 152
103 if (SvOK (*av_fetch (priv, CD_CORO, 1))) 153 sv_magicext (SvRV (self), newRV_noinc ((SV *)priv), PERL_MAGIC_coro_event, 0, (char *)w, 0);
104 croak ("only one coroutine can wait for an event"); 154 }
155}
105 156
106 if (!w->running)
107 GEventAPI->start (w, 1);
108
109 if (*av_fetch (priv, CD_OK, 1) == &PL_sv_yes)
110 {
111 av_store (priv, CD_OK, &PL_sv_no);
112 XSRETURN_NO;
113 }
114 else
115 {
116 av_store (priv, CD_CORO, SvREFCNT_inc (CORO_CURRENT));
117 XSRETURN_YES;
118 }
119

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