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Comparing Coro/Event/Event.xs (file contents):
Revision 1.13 by root, Fri Dec 1 19:41:06 2006 UTC vs.
Revision 1.23 by root, Tue Oct 9 22:29:27 2007 UTC

… …
6#include <string.h> 6#include <string.h>
7 7
8#include "EventAPI.h" 8#include "EventAPI.h"
9#include "../Coro/CoroAPI.h" 9#include "../Coro/CoroAPI.h"
10 10
11#define CD_CORO 0 11#define CD_WAIT 0 /* wait queue */
12#define CD_TYPE 1 12#define CD_TYPE 1
13#define CD_OK 2 13#define CD_OK 2
14#define CD_PRIO 3 /* hardcoded in Coro::Event */
15#define CD_HITS 4 /* hardcoded in Coro::Event */ 14#define CD_HITS 3 /* hardcoded in Coro::Event */
16#define CD_GOT 5 /* hardcoded in Coro::Event, Coro::Handle */ 15#define CD_GOT 4 /* hardcoded in Coro::Event, Coro::Handle */
17#define CD_MAX 5 16#define CD_MAX 4
17
18static HV *coro_event_event_stash;
19
20#define PERL_MAGIC_coro_event 0x18 /* to avoid clashes with e.g. event */
18 21
19static void 22static void
20coro_std_cb (pe_event *pe) 23coro_std_cb (pe_event *pe)
21{ 24{
22 AV *priv = (AV *)pe->ext_data; 25 AV *priv = (AV *)pe->ext_data;
23 IV type = SvIV (AvARRAY (priv)[CD_TYPE]); 26 IV type = SvIV (AvARRAY (priv)[CD_TYPE]);
27 AV *cd_wait;
24 SV **cd_coro; 28 SV *coro;
25 29
26 SvIV_set (AvARRAY (priv)[CD_PRIO], pe->prio);
27 SvIV_set (AvARRAY (priv)[CD_HITS], pe->hits); 30 SvIV_set (AvARRAY (priv)[CD_HITS], pe->hits);
28
29 if (type == 1)
30 SvIV_set (AvARRAY (priv)[CD_GOT], ((pe_ioevent *)pe)->got); 31 SvIV_set (AvARRAY (priv)[CD_GOT], type ? ((pe_ioevent *)pe)->got : 0);
31
32 GEventAPI->stop (pe->up, 0);
33 32
34 AvARRAY (priv)[CD_OK] = &PL_sv_yes; 33 AvARRAY (priv)[CD_OK] = &PL_sv_yes;
35 34
36 cd_coro = &AvARRAY(priv)[CD_CORO]; 35 cd_wait = (AV *)AvARRAY(priv)[CD_WAIT];
36
37 coro = av_shift (cd_wait);
37 if (*cd_coro != &PL_sv_undef) 38 if (coro != &PL_sv_undef)
38 { 39 {
39 AvARRAY (priv)[CD_OK] = &PL_sv_yes;
40 CORO_READY (*cd_coro); 40 CORO_READY (coro);
41 SvREFCNT_dec (*cd_coro); 41 SvREFCNT_dec (coro);
42 *cd_coro = &PL_sv_undef;
43 } 42 }
43
44 if (av_len (cd_wait) < 0)
45 GEventAPI->stop (pe->up, 0);
44} 46}
45 47
46static void 48static void
47asynccheck_hook (void *data) 49asynccheck_hook (void *data)
48{ 50{
49 /* ceding from C means allocating a stack, but we assume this is a rare case */ 51 /* this loops as long as we have _other_ coros with the same or higher priority */
52 while (CORO_NREADY && CORO_CEDE)
53 ;
54}
55
56static double
57prepare_hook (void *data)
58{
59 /* this yields once to another coro with any priority */
50 while (CORO_NREADY) 60 if (CORO_NREADY)
51 CORO_CEDE; 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 */
52} 111}
53 112
54MODULE = Coro::Event PACKAGE = Coro::Event 113MODULE = Coro::Event PACKAGE = Coro::Event
55 114
56PROTOTYPES: ENABLE 115PROTOTYPES: ENABLE
57 116
58BOOT: 117BOOT:
59{ 118{
119 coro_event_event_stash = gv_stashpv ("Coro::Event::Event", TRUE);
120
60 I_EVENT_API ("Coro::Event"); 121 I_EVENT_API ("Coro::Event");
61 I_CORO_API ("Coro::Event"); 122 I_CORO_API ("Coro::Event");
62 123
63 GEventAPI->add_hook ("asynccheck", (void *)asynccheck_hook, 0); 124 GEventAPI->add_hook ("asynccheck", (void *)asynccheck_hook, 0);
125 GEventAPI->add_hook ("prepare", (void *)prepare_hook, 0);
126
127 GCoroAPI->coro_event_next = event_next;
64} 128}
65 129
66void 130void
67_install_std_cb (SV *self, int type) 131_install_std_cb (SV *self, int type)
68 CODE: 132 CODE:
… …
72 if (w->callback) 136 if (w->callback)
73 croak ("Coro::Event watchers must not have a callback (see Coro::Event), caught"); 137 croak ("Coro::Event watchers must not have a callback (see Coro::Event), caught");
74 138
75 { 139 {
76 AV *priv = newAV (); 140 AV *priv = newAV ();
77 SV *rv = newRV_noinc ((SV *)priv);
78 141
79 av_extend (priv, CD_MAX); 142 av_fill (priv, CD_MAX);
80 AvARRAY (priv)[CD_CORO] = &PL_sv_undef; 143 AvARRAY (priv)[CD_WAIT] = (SV *)newAV (); /* AV in AV _should_ not be exposed to perl */
81 AvARRAY (priv)[CD_TYPE] = newSViv (type); 144 AvARRAY (priv)[CD_TYPE] = newSViv (type);
82 AvARRAY (priv)[CD_OK ] = &PL_sv_no; 145 AvARRAY (priv)[CD_OK ] = &PL_sv_no;
83 AvARRAY (priv)[CD_PRIO] = newSViv (0);
84 AvARRAY (priv)[CD_HITS] = newSViv (0); 146 AvARRAY (priv)[CD_HITS] = newSViv (0);
85 AvARRAY (priv)[CD_GOT ] = newSViv (0); 147 AvARRAY (priv)[CD_GOT ] = newSViv (0);
86 SvREADONLY_on (priv); 148 SvREADONLY_on (priv);
87 149
88 w->callback = coro_std_cb; 150 w->callback = coro_std_cb;
89 w->ext_data = priv; 151 w->ext_data = priv;
90 152
91 /* make sure Event does not use PERL_MAGIC_uvar, which */ 153 sv_magicext (SvRV (self), newRV_noinc ((SV *)priv), PERL_MAGIC_coro_event, 0, (char *)w, 0);
92 /* we abuse for non-uvar purposes. */
93 sv_magicext (SvRV (self), rv, PERL_MAGIC_uvar, 0, 0, 0);
94 } 154 }
95} 155}
96 156
97void
98_next (SV *self)
99 CODE:
100{
101 pe_watcher *w = GEventAPI->sv_2watcher (self);
102 AV *priv = (AV *)w->ext_data;
103
104 if (AvARRAY (priv)[CD_OK] == &PL_sv_yes)
105 {
106 AvARRAY (priv)[CD_OK] = &PL_sv_no;
107 XSRETURN_NO; /* got an event */
108 }
109
110 if (!w->running)
111 GEventAPI->start (w, 1);
112
113 if (AvARRAY (priv)[CD_CORO] == &PL_sv_undef)
114 AvARRAY (priv)[CD_CORO] = SvREFCNT_inc (CORO_CURRENT);
115 else if (AvARRAY (priv)[CD_CORO] != CORO_CURRENT)
116 croak ("Coro::Event::next can only be called from a single coroutine at a time, caught");
117
118 XSRETURN_YES; /* schedule */
119}
120

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