| 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> |
|
|
6 | #include <string.h> |
|
|
7 | |
|
|
8 | #include "EventAPI.h" |
| 5 | #include "CoroAPI.h" |
9 | #include "../Coro/CoroAPI.h" |
|
|
10 | |
|
|
11 | #define CD_WAIT 0 /* wait queue */ |
|
|
12 | #define CD_TYPE 1 |
|
|
13 | #define CD_OK 2 |
|
|
14 | #define CD_HITS 3 /* hardcoded in Coro::Event */ |
|
|
15 | #define CD_GOT 4 /* hardcoded in Coro::Event, Coro::Handle */ |
|
|
16 | #define CD_MAX 4 |
|
|
17 | |
|
|
18 | static HV *coro_event_event_stash; |
|
|
19 | |
|
|
20 | #define PERL_MAGIC_coro_event 0x18 /* to avoid clashes with e.g. event */ |
|
|
21 | |
|
|
22 | static void |
|
|
23 | coro_std_cb (pe_event *pe) |
|
|
24 | { |
|
|
25 | AV *priv = (AV *)pe->ext_data; |
|
|
26 | IV type = SvIV (AvARRAY (priv)[CD_TYPE]); |
|
|
27 | AV *cd_wait; |
|
|
28 | SV *coro; |
|
|
29 | |
|
|
30 | SvIV_set (AvARRAY (priv)[CD_HITS], pe->hits); |
|
|
31 | SvIV_set (AvARRAY (priv)[CD_GOT], type ? ((pe_ioevent *)pe)->got : 0); |
|
|
32 | |
|
|
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 | { |
|
|
40 | CORO_READY (coro); |
|
|
41 | SvREFCNT_dec (coro); |
|
|
42 | } |
|
|
43 | |
|
|
44 | if (av_len (cd_wait) < 0) |
|
|
45 | GEventAPI->stop (pe->up, 0); |
|
|
46 | } |
|
|
47 | |
|
|
48 | static void |
|
|
49 | asynccheck_hook (void *data) |
|
|
50 | { |
|
|
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 | |
|
|
56 | static double |
|
|
57 | prepare_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 | |
|
|
74 | static SV * |
|
|
75 | event_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 */ |
|
|
111 | } |
| 6 | |
112 | |
| 7 | MODULE = Coro::Event PACKAGE = Coro::Event |
113 | MODULE = Coro::Event PACKAGE = Coro::Event |
| 8 | |
114 | |
|
|
115 | PROTOTYPES: ENABLE |
|
|
116 | |
| 9 | BOOT: |
117 | BOOT: |
| 10 | { |
118 | { |
|
|
119 | coro_event_event_stash = gv_stashpv ("Coro::Event::Event", TRUE); |
|
|
120 | |
| 11 | I_EVENT_API("Coro::Event"); |
121 | I_EVENT_API ("Coro::Event"); |
| 12 | I_CORO_API ("Coro::Event"); |
122 | I_CORO_API ("Coro::Event"); |
|
|
123 | |
|
|
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; |
| 13 | } |
128 | } |
|
|
129 | |
|
|
130 | void |
|
|
131 | _install_std_cb (SV *self, int type) |
|
|
132 | CODE: |
|
|
133 | { |
|
|
134 | pe_watcher *w = GEventAPI->sv_2watcher (self); |
|
|
135 | |
|
|
136 | if (w->callback) |
|
|
137 | croak ("Coro::Event watchers must not have a callback (see Coro::Event), caught"); |
|
|
138 | |
|
|
139 | { |
|
|
140 | AV *priv = newAV (); |
|
|
141 | |
|
|
142 | av_fill (priv, CD_MAX); |
|
|
143 | AvARRAY (priv)[CD_WAIT] = (SV *)newAV (); /* AV in AV _should_ not be exposed to perl */ |
|
|
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); |
|
|
149 | |
|
|
150 | w->callback = coro_std_cb; |
|
|
151 | w->ext_data = priv; |
|
|
152 | |
|
|
153 | sv_magicext (SvRV (self), newRV_noinc ((SV *)priv), PERL_MAGIC_coro_event, 0, (char *)w, 0); |
|
|
154 | } |
|
|
155 | } |
|
|
156 | |
