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/cvs/Coro/Event/Event.xs
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Comparing Coro/Event/Event.xs (file contents):
Revision 1.5 by root, Fri Aug 17 04:08:58 2001 UTC vs.
Revision 1.14 by root, Fri Dec 1 20:49:54 2006 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_CORO 0
11#define CD_TYPE 1 12#define CD_TYPE 1
12#define CD_OK 2 13#define CD_OK 2
13#define CD_GOT 3 /* hardcoded in Coro::Event, Coro::Handle */
14#define CD_MAX 3
15/* no support for hits and prio so far. */
16 14
17#define EV_CLASS "Coro::Event" 15#define CD_HITS 4 /* hardcoded in Coro::Event */
18 16#define CD_GOT 5 /* hardcoded in Coro::Event, Coro::Handle */
19static pe_idle *scheduler; 17#define CD_MAX 5
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 18
28static void 19static void
29coro_std_cb(pe_event *pe) 20coro_std_cb (pe_event *pe)
30{ 21{
31 AV *priv = (AV *)SvRV ((SV *)pe->ext_data); 22 AV *priv = (AV *)pe->ext_data;
32 IV type = SvIV (*av_fetch (priv, CD_TYPE, 1)); 23 IV type = SvIV (AvARRAY (priv)[CD_TYPE]);
33 SV *cd_coro = *av_fetch (priv, CD_CORO, 1); 24 SV **cd_coro;
25
26 SvIV_set (AvARRAY (priv)[CD_HITS], pe->hits);
34 27
35 if (type == 1) 28 if (type == 1)
36 av_store (priv, CD_GOT, newSViv (((pe_ioevent *)pe)->got)); 29 SvIV_set (AvARRAY (priv)[CD_GOT], ((pe_ioevent *)pe)->got);
37 30
38 if (SvROK (cd_coro)) 31 GEventAPI->stop (pe->up, 0);
32
33 AvARRAY (priv)[CD_OK] = &PL_sv_yes;
34
35 cd_coro = &AvARRAY(priv)[CD_CORO];
36 if (*cd_coro != &PL_sv_undef)
39 { 37 {
38 AvARRAY (priv)[CD_OK] = &PL_sv_yes;
40 CORO_READY (cd_coro); 39 CORO_READY (*cd_coro);
41 av_store (priv, CD_CORO, &PL_sv_undef); 40 SvREFCNT_dec (*cd_coro);
42 NEED_SCHEDULE; 41 *cd_coro = &PL_sv_undef;
43 }
44 else
45 {
46 av_store (priv, CD_OK, &PL_sv_yes);
47 GEventAPI->stop (pe->up, 0);
48 } 42 }
49} 43}
50 44
51static void 45static void
52scheduler_cb(pe_event *pe) 46asynccheck_hook (void *data)
53{ 47{
48 /* ceding from C means allocating a stack, but we assume this is a rare case */
54 while (CORO_NREADY) 49 while (CORO_NREADY)
55 CORO_CEDE; 50 CORO_CEDE;
56
57 do_schedule = 0;
58} 51}
59 52
60MODULE = Coro::Event PACKAGE = Coro::Event 53MODULE = Coro::Event PACKAGE = Coro::Event
61 54
62PROTOTYPES: ENABLE 55PROTOTYPES: ENABLE
63 56
64BOOT: 57BOOT:
65{ 58{
66 I_EVENT_API("Coro::Event"); 59 I_EVENT_API ("Coro::Event");
67 I_CORO_API ("Coro::Event"); 60 I_CORO_API ("Coro::Event");
68 61
69 /* create a fake idle handler (we only ever call now) */ 62 GEventAPI->add_hook ("asynccheck", (void *)asynccheck_hook, 0);
70 scheduler = GEventAPI->new_idle (0, 0);
71 scheduler->base.callback = scheduler_cb;
72 scheduler->base.prio = 4; /* StarvePrio(?) */
73 scheduler->min_interval = newSVnv (0);
74 scheduler->max_interval = newSVnv (0);
75 GEventAPI->stop ((pe_watcher *)scheduler, 0);
76} 63}
77 64
78void 65void
79_install_std_cb(self,type) 66_install_std_cb (SV *self, int type)
80 SV * self
81 int type
82 CODE: 67 CODE:
68{
83 pe_watcher *w = GEventAPI->sv_2watcher (self); 69 pe_watcher *w = GEventAPI->sv_2watcher (self);
84 AV *priv = newAV ();
85 SV *rv = newRV_noinc ((SV *)priv);
86 70
87 av_extend (priv, CD_MAX); 71 if (w->callback)
88 av_store (priv, CD_TYPE, newSViv (type)); 72 croak ("Coro::Event watchers must not have a callback (see Coro::Event), caught");
89 73
90 w->callback = coro_std_cb; 74 {
91 w->ext_data = rv; 75 AV *priv = newAV ();
76 SV *rv = newRV_noinc ((SV *)priv);
92 77
93 hv_store ((HV *)SvRV (self), 78 av_extend (priv, CD_MAX);
94 EV_CLASS, strlen (EV_CLASS), 79 AvARRAY (priv)[CD_CORO] = &PL_sv_undef;
95 rv, 0); 80 AvARRAY (priv)[CD_TYPE] = newSViv (type);
81 AvARRAY (priv)[CD_OK ] = &PL_sv_no;
82 AvARRAY (priv)[CD_HITS] = newSViv (0);
83 AvARRAY (priv)[CD_GOT ] = newSViv (0);
84 SvREADONLY_on (priv);
85
86 w->callback = coro_std_cb;
87 w->ext_data = priv;
88
89 /* make sure Event does not use PERL_MAGIC_uvar, which */
90 /* we abuse for non-uvar purposes. */
91 sv_magicext (SvRV (self), rv, PERL_MAGIC_uvar, 0, 0, 0);
92 }
93}
96 94
97void 95void
98_next(self) 96_next (SV *self)
99 SV * self
100 CODE: 97 CODE:
98{
101 pe_watcher *w = GEventAPI->sv_2watcher (self); 99 pe_watcher *w = GEventAPI->sv_2watcher (self);
102 AV *priv = (AV *)SvRV ((SV *)w->ext_data); 100 AV *priv = (AV *)w->ext_data;
103 101
104 if (SvOK (*av_fetch (priv, CD_CORO, 1))) 102 if (AvARRAY (priv)[CD_OK] == &PL_sv_yes)
105 croak ("only one coroutine can wait for an event"); 103 {
104 AvARRAY (priv)[CD_OK] = &PL_sv_no;
105 XSRETURN_NO; /* got an event */
106 }
106 107
107 if (!w->running) 108 if (!w->running)
108 GEventAPI->start (w, 1); 109 {
110 SvIV_set (AvARRAY (priv)[CD_GOT], 0);
111 SvIV_set (AvARRAY (priv)[CD_HITS], 0);
109 112
110 if (*av_fetch (priv, CD_OK, 1) == &PL_sv_yes) 113 GEventAPI->start (w, 1);
111 {
112 av_store (priv, CD_OK, &PL_sv_no);
113 XSRETURN_NO;
114 }
115 else
116 {
117 av_store (priv, CD_CORO, SvREFCNT_inc (CORO_CURRENT));
118 XSRETURN_YES;
119 } 114 }
120 115
116 if (AvARRAY (priv)[CD_CORO] == &PL_sv_undef)
117 AvARRAY (priv)[CD_CORO] = SvREFCNT_inc (CORO_CURRENT);
118 else if (AvARRAY (priv)[CD_CORO] != CORO_CURRENT)
119 croak ("Coro::Event::next can only be called from a single coroutine at a time, caught");
120
121 XSRETURN_YES; /* schedule */
122}
123
124SV *
125_event (SV *self)
126 CODE:
127{
128 if (GIMME_V == G_VOID)
129 XSRETURN_EMPTY;
130
131 {
132 pe_watcher *w = GEventAPI->sv_2watcher (self);
133 AV *priv = (AV *)w->ext_data;
134
135 RETVAL = newRV_inc ((SV *)priv);
136 }
137}
138 OUTPUT:
139 RETVAL
140

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