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/cvs/Coro/Event/Event.xs
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Comparing Coro/Event/Event.xs (file contents):
Revision 1.12 by root, Fri Dec 1 02:17:37 2006 UTC vs.
Revision 1.16 by root, Sat Dec 2 18:01:30 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/* this useful idiom is unfortunately missing... */
8static void
9confess (const char *msg)
10{
11 dSP;
12
13 PUSHMARK(SP);
14 XPUSHs (sv_2mortal(newSVpv("only one coroutine can wait for an event at any given time",0)));
15 PUTBACK;
16 call_pv ("Carp::confess", G_VOID);
17}
18 7
19#include "EventAPI.h" 8#include "EventAPI.h"
20#include "../Coro/CoroAPI.h" 9#include "../Coro/CoroAPI.h"
21 10
22#ifndef PE_PERLCB 11#define CD_WAIT 0 /* wait queue */
23# define PE_PERLCB 0x020 /* not public, but we need it :( */
24#endif
25
26#define CD_CORO 0
27#define CD_TYPE 1 12#define CD_TYPE 1
28#define CD_OK 2 13#define CD_OK 2
29#define CD_PRIO 3 /* hardcoded in Coro::Event */ 14
30#define CD_HITS 4 /* hardcoded in Coro::Event */ 15#define CD_HITS 4 /* hardcoded in Coro::Event */
31#define CD_GOT 5 /* hardcoded in Coro::Event, Coro::Handle */ 16#define CD_GOT 5 /* hardcoded in Coro::Event, Coro::Handle */
32#define CD_MAX 5 17#define CD_MAX 5
33 18
34#define EV_CLASS "Coro::Event"
35
36static void 19static void
37coro_std_cb(pe_event *pe) 20coro_std_cb (pe_event *pe)
38{ 21{
39 AV *priv = (AV *)pe->ext_data; 22 AV *priv = (AV *)pe->ext_data;
40 IV type = SvIV (*av_fetch (priv, CD_TYPE, 1)); 23 IV type = SvIV (AvARRAY (priv)[CD_TYPE]);
24 AV *cd_wait;
41 SV **cd_coro; 25 SV *coro;
42 26
43 sv_setiv (AvARRAY(priv)[CD_PRIO], pe->prio);
44 sv_setiv (AvARRAY(priv)[CD_HITS], pe->hits); 27 SvIV_set (AvARRAY (priv)[CD_HITS], pe->hits);
28 SvIV_set (AvARRAY (priv)[CD_GOT], type ? ((pe_ioevent *)pe)->got : 0);
45 29
46 if (type == 1) 30 AvARRAY (priv)[CD_OK] = &PL_sv_yes;
47 sv_setiv (AvARRAY(priv)[CD_GOT], ((pe_ioevent *)pe)->got);
48 31
32 cd_wait = (AV *)AvARRAY(priv)[CD_WAIT];
33 if ((coro = av_shift (cd_wait)))
34 {
35 if (av_len (cd_wait) < 0)
49 GEventAPI->stop (pe->up, 0); 36 GEventAPI->stop (pe->up, 0);
50 37
51 AvARRAY(priv)[CD_OK] = &PL_sv_yes;
52
53 cd_coro = &AvARRAY(priv)[CD_CORO];
54 if (*cd_coro != &PL_sv_undef)
55 {
56 AvARRAY(priv)[CD_OK] = &PL_sv_yes;
57 CORO_READY (*cd_coro); 38 CORO_READY (coro);
58 SvREFCNT_dec (*cd_coro); 39 SvREFCNT_dec (coro);
59 *cd_coro = &PL_sv_undef;
60 } 40 }
61} 41}
62 42
63static double 43static void
64prepare_hook (void *data) 44asynccheck_hook (void *data)
65{ 45{
46 /* ceding from C means allocating a stack, but we assume this is a rare case */
66 while (CORO_NREADY) 47 while (CORO_NREADY)
67 CORO_CEDE; 48 CORO_CEDE;
68
69 return 1e10;
70} 49}
71 50
72MODULE = Coro::Event PACKAGE = Coro::Event 51MODULE = Coro::Event PACKAGE = Coro::Event
73 52
74PROTOTYPES: ENABLE 53PROTOTYPES: ENABLE
… …
76BOOT: 55BOOT:
77{ 56{
78 I_EVENT_API ("Coro::Event"); 57 I_EVENT_API ("Coro::Event");
79 I_CORO_API ("Coro::Event"); 58 I_CORO_API ("Coro::Event");
80 59
81 GEventAPI->add_hook ("prepare", (void *)prepare_hook, 0); 60 GEventAPI->add_hook ("asynccheck", (void *)asynccheck_hook, 0);
82} 61}
83 62
84void 63void
85_install_std_cb(self,type) 64_install_std_cb (SV *self, int type)
86 SV * self
87 int type
88 CODE: 65 CODE:
89{ 66{
90 pe_watcher *w = GEventAPI->sv_2watcher (self); 67 pe_watcher *w = GEventAPI->sv_2watcher (self);
91 68
92 if (WaFLAGS (w) & PE_PERLCB) 69 if (w->callback)
93 croak ("Coro::Event watchers must not have a perl callback (see Coro::Event), caught"); 70 croak ("Coro::Event watchers must not have a callback (see Coro::Event), caught");
71
94 { 72 {
95 AV *priv = newAV (); 73 AV *priv = newAV ();
96 SV *rv = newRV_noinc ((SV *)priv); 74 SV *rv = newRV_noinc ((SV *)priv);
97 75
98 av_extend (priv, CD_MAX); 76 av_fill (priv, CD_MAX);
99 av_store (priv, CD_CORO, &PL_sv_undef); 77 AvARRAY (priv)[CD_WAIT] = newAV (); /* badbad */
100 av_store (priv, CD_TYPE, newSViv (type)); 78 AvARRAY (priv)[CD_TYPE] = newSViv (type);
101 av_store (priv, CD_OK , &PL_sv_no); 79 AvARRAY (priv)[CD_OK ] = &PL_sv_no;
102 av_store (priv, CD_PRIO, newSViv (0));
103 av_store (priv, CD_HITS, newSViv (0)); 80 AvARRAY (priv)[CD_HITS] = newSViv (0);
104 av_store (priv, CD_GOT , type ? newSViv (0) : &PL_sv_undef); 81 AvARRAY (priv)[CD_GOT ] = newSViv (0);
105 SvREADONLY_on (priv); 82 SvREADONLY_on (priv);
106 83
107 w->callback = coro_std_cb; 84 w->callback = coro_std_cb;
108 w->ext_data = priv; 85 w->ext_data = priv;
109 86
110 hv_store ((HV *)SvRV (self), 87 /* make sure Event does not use PERL_MAGIC_uvar, which */
111 EV_CLASS, strlen (EV_CLASS), 88 /* we abuse for non-uvar purposes. */
112 rv, 0); 89 sv_magicext (SvRV (self), rv, PERL_MAGIC_uvar, 0, 0, 0);
113
114 GEventAPI->start (w, 0);
115 } 90 }
116} 91}
117 92
118void 93void
119_next(self) 94_next (SV *self)
120 SV * self
121 CODE: 95 CODE:
122{ 96{
123 pe_watcher *w = GEventAPI->sv_2watcher (self); 97 pe_watcher *w = GEventAPI->sv_2watcher (self);
124 AV *priv = (AV *)w->ext_data; 98 AV *priv = (AV *)w->ext_data;
125 99
126 if (AvARRAY(priv)[CD_OK] == &PL_sv_yes) 100 if (AvARRAY (priv)[CD_OK] == &PL_sv_yes)
127 { 101 {
128 AvARRAY(priv)[CD_OK] = &PL_sv_no; 102 AvARRAY (priv)[CD_OK] = &PL_sv_no;
129 XSRETURN_NO; 103 XSRETURN_NO; /* got an event */
130 } 104 }
105
106 av_push ((AV *)AvARRAY (priv)[CD_WAIT], SvREFCNT_inc (CORO_CURRENT));
131 107
132 if (!w->running) 108 if (!w->running)
133 GEventAPI->start (w, 1); 109 GEventAPI->start (w, 1);
134 110
135 if (AvARRAY(priv)[CD_CORO] == &PL_sv_undef) 111 XSRETURN_YES; /* schedule */
136 AvARRAY(priv)[CD_CORO] = SvREFCNT_inc (CORO_CURRENT);
137
138 XSRETURN_YES;
139} 112}
140 113
114SV *
115_event (SV *self)
116 CODE:
117{
118 if (GIMME_V == G_VOID)
119 XSRETURN_EMPTY;
120
121 {
122 pe_watcher *w = GEventAPI->sv_2watcher (self);
123 AV *priv = (AV *)w->ext_data;
124
125 RETVAL = newRV_inc ((SV *)priv);
126 }
127}
128 OUTPUT:
129 RETVAL
130

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