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/cvs/Coro/Event/Event.xs
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Comparing Coro/Event/Event.xs (file contents):
Revision 1.3 by root, Fri Aug 17 01:45:39 2001 UTC vs.
Revision 1.19 by root, Wed Jan 24 16:22:08 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_W 2 13#define CD_OK 2
13#define CD_GOT 3 14#define CD_HITS 3 /* hardcoded in Coro::Event */
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::Ev" 18static HV *coro_event_event_stash;
18 19
19static HV *ev_stash; 20static void
20static pe_idle *scheduler; 21coro_std_cb (pe_event *pe)
21static int do_schedule; 22{
23 AV *priv = (AV *)pe->ext_data;
24 IV type = SvIV (AvARRAY (priv)[CD_TYPE]);
25 AV *cd_wait;
26 SV *coro;
22 27
23#define NEED_SCHEDULE if (!do_schedule) \ 28 SvIV_set (AvARRAY (priv)[CD_HITS], pe->hits);
24 { \ 29 SvIV_set (AvARRAY (priv)[CD_GOT], type ? ((pe_ioevent *)pe)->got : 0);
25 do_schedule = 1; \
26 GEventAPI->now ((pe_watcher *)scheduler); \
27 }
28static void
29coro_std_cb(pe_event *pe)
30{
31 AV *av = (AV *)SvRV ((SV *)pe->ext_data);
32 IV type = SvIV (*av_fetch (av, CD_TYPE, 1));
33 SV *cd_coro = *av_fetch (av, CD_CORO, 1);
34 30
35 av_store (av, CD_W, SvREFCNT_inc (pe->up->mysv)); 31 AvARRAY (priv)[CD_OK] = &PL_sv_yes;
36 32
37 if (type == 1) 33 cd_wait = (AV *)AvARRAY(priv)[CD_WAIT];
38 av_store (av, CD_GOT, newSViv (((pe_ioevent *)pe)->got));
39 34
40 GEventAPI->stop (pe->up, 0); 35 coro = av_shift (cd_wait);
36 if (coro != &PL_sv_undef)
37 {
38 CORO_READY (coro);
39 SvREFCNT_dec (coro);
40 }
41 41
42 if (SvROK (cd_coro)) 42 if (av_len (cd_wait) < 0)
43 { 43 GEventAPI->stop (pe->up, 0);
44 CORO_READY (cd_coro);
45 NEED_SCHEDULE;
46 }
47} 44}
48 45
49static void 46static void
50scheduler_cb(pe_event *pe) 47asynccheck_hook (void *data)
51{ 48{
49 /* this loops as long as we have _other_ coros with the same or higher priority */
52 while (CORO_NREADY) 50 while (CORO_NREADY && CORO_CEDE)
53 CORO_CEDE; 51 ;
52}
54 53
55 do_schedule = 0; 54static double
55prepare_hook (void *data)
56{
57 /* this yields once to another coro with any priority */
58 if (CORO_NREADY)
59 {
60 CORO_CEDE_NOTSELF;
61 /*
62 * timers might have changed, and Event fails to notice this
63 * so we have to assume the worst. If Event didn't have that bug,
64 * we would only need to do this if CORO_NREADY is != 0 now.
65 */
66 return 0.;
67 }
68 else
69 return 85197.73; /* this is as good as any value, but it factors badly with common values */
56} 70}
57 71
58MODULE = Coro::Event PACKAGE = Coro::Event 72MODULE = Coro::Event PACKAGE = Coro::Event
59 73
60PROTOTYPES: ENABLE 74PROTOTYPES: ENABLE
61 75
62BOOT: 76BOOT:
63{ 77{
78 coro_event_event_stash = gv_stashpv ("Coro::Event::Event", TRUE);
79
64 I_EVENT_API("Coro::Event"); 80 I_EVENT_API ("Coro::Event");
65 I_CORO_API ("Coro::Event"); 81 I_CORO_API ("Coro::Event");
66 82
67 ev_stash = gv_stashpv (EV_CLASS, TRUE); 83 GEventAPI->add_hook ("asynccheck", (void *)asynccheck_hook, 0);
68 84 GEventAPI->add_hook ("prepare", (void *)prepare_hook, 0);
69 /* create a fake idle handler (we only ever call now) */
70 scheduler = GEventAPI->new_idle (0, 0);
71 scheduler->base.callback = scheduler_cb;
72 scheduler->min_interval = newSVnv (0);
73 scheduler->max_interval = newSVnv (0);
74 GEventAPI->stop ((pe_watcher *)scheduler, 0);
75} 85}
76 86
77void 87void
78_install_std_cb(self,type) 88_install_std_cb (SV *self, int type)
79 SV * self
80 int type
81 CODE: 89 CODE:
90{
82 pe_watcher *w = GEventAPI->sv_2watcher (self); 91 pe_watcher *w = GEventAPI->sv_2watcher (self);
83 AV *priv = newAV ();
84 SV *rv;
85 92
86 av_extend (priv, CD_MAX); 93 if (w->callback)
87 av_store (priv, CD_TYPE, newSViv (type)); 94 croak ("Coro::Event watchers must not have a callback (see Coro::Event), caught");
88 95
89 rv = sv_bless (newRV_noinc ((SV *)priv), ev_stash); 96 {
97 AV *priv = newAV ();
90 98
91 hv_store ((HV *)SvRV (self), 99 av_fill (priv, CD_MAX);
92 EV_CLASS, strlen (EV_CLASS), 100 AvARRAY (priv)[CD_WAIT] = (SV *)newAV (); /* AV in AV _should_ not be exposed to perl */
93 rv, 0); 101 AvARRAY (priv)[CD_TYPE] = newSViv (type);
102 AvARRAY (priv)[CD_OK ] = &PL_sv_no;
103 AvARRAY (priv)[CD_HITS] = newSViv (0);
104 AvARRAY (priv)[CD_GOT ] = newSViv (0);
105 SvREADONLY_on (priv);
94 106
95 w->ext_data = rv;
96 w->callback = coro_std_cb; 107 w->callback = coro_std_cb;
108 w->ext_data = priv;
109
110 /* make sure Event does not use PERL_MAGIC_uvar, which */
111 /* we abuse for non-uvar purposes. */
112 sv_magicext (SvRV (self), newRV_noinc ((SV *)priv), PERL_MAGIC_uvar, 0, 0, 0);
113 }
114}
97 115
98void 116void
99_next0(self) 117_next (SV *self)
100 SV * self
101 CODE: 118 CODE:
119{
102 pe_watcher *w = GEventAPI->sv_2watcher (self); 120 pe_watcher *w = GEventAPI->sv_2watcher (self);
103 AV *priv = (AV *)SvRV ((SV *)w->ext_data); 121 AV *priv = (AV *)w->ext_data;
104 122
105 GEventAPI->start (w, 1); 123 if (AvARRAY (priv)[CD_OK] == &PL_sv_yes)
124 {
125 AvARRAY (priv)[CD_OK] = &PL_sv_no;
126 XSRETURN_NO; /* got an event */
127 }
106 128
107 if (SvROK (*av_fetch (priv, CD_CORO, 1))) 129 av_push ((AV *)AvARRAY (priv)[CD_WAIT], SvREFCNT_inc (CORO_CURRENT));
108 croak ("only one coroutine can wait for an event");
109 130
110 av_store (priv, CD_CORO, SvREFCNT_inc (CORO_CURRENT)); 131 if (!w->running)
132 GEventAPI->start (w, 1);
133
134 XSRETURN_YES; /* schedule */
135}
111 136
112SV * 137SV *
113_next1(self) 138_event (SV *self)
114 SV * self 139 CODE:
115 CODE: 140{
116 pe_watcher *w = GEventAPI->sv_2watcher (self); 141 if (GIMME_V == G_VOID)
117 AV *priv = (AV *)SvRV ((SV *)w->ext_data); 142 XSRETURN_EMPTY;
118 143
119 av_store (priv, CD_CORO, &PL_sv_undef); 144 {
145 pe_watcher *w = GEventAPI->sv_2watcher (self);
146 AV *priv = (AV *)w->ext_data;
120 147
121 RETVAL = SvREFCNT_inc ((SV *)w->ext_data); 148 RETVAL = newRV_inc ((SV *)priv);
149
150 /* may need to bless it now */
151 if (!SvOBJECT (priv))
152 {
153 SvREADONLY_off ((SV *)priv);
154 sv_bless (RETVAL, coro_event_event_stash);
155 SvREADONLY_on ((SV *)priv);
156 }
157 }
158}
122 OUTPUT: 159 OUTPUT:
123 RETVAL 160 RETVAL
124 161

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