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 | |
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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 |
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14 | #define CD_MAX 3 |
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15 | /* no support for hits and prio so far. */ |
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16 | |
14 | |
17 | #define EV_CLASS "Coro::Event::Ev" |
15 | #define CD_HITS 4 /* hardcoded in Coro::Event */ |
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16 | #define CD_GOT 5 /* hardcoded in Coro::Event, Coro::Handle */ |
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17 | #define CD_MAX 5 |
18 | |
18 | |
19 | static HV *ev_stash; |
19 | static void |
20 | static pe_idle *scheduler; |
20 | coro_std_cb (pe_event *pe) |
21 | static int do_schedule; |
21 | { |
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22 | AV *priv = (AV *)pe->ext_data; |
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23 | IV type = SvIV (AvARRAY (priv)[CD_TYPE]); |
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24 | AV *cd_wait; |
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25 | SV *coro; |
22 | |
26 | |
23 | #define NEED_SCHEDULE if (!do_schedule) \ |
27 | SvIV_set (AvARRAY (priv)[CD_HITS], pe->hits); |
24 | { \ |
28 | SvIV_set (AvARRAY (priv)[CD_GOT], type ? ((pe_ioevent *)pe)->got : 0); |
25 | do_schedule = 1; \ |
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26 | GEventAPI->now ((pe_watcher *)scheduler); \ |
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27 | } |
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28 | static void |
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29 | coro_std_cb(pe_event *pe) |
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30 | { |
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31 | AV *av = (AV *)SvRV ((SV *)pe->ext_data); |
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32 | IV type = SvIV (*av_fetch (av, CD_TYPE, 1)); |
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33 | SV *cd_coro = *av_fetch (av, CD_CORO, 1); |
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34 | |
29 | |
35 | av_store (av, CD_W, SvREFCNT_inc (pe->up->mysv)); |
30 | AvARRAY (priv)[CD_OK] = &PL_sv_yes; |
36 | |
31 | |
37 | if (type == 1) |
32 | cd_wait = (AV *)AvARRAY(priv)[CD_WAIT]; |
38 | av_store (av, CD_GOT, newSViv (((pe_ioevent *)pe)->got)); |
33 | if ((coro = av_shift (cd_wait))) |
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34 | { |
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35 | if (av_len (cd_wait) < 0) |
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36 | GEventAPI->stop (pe->up, 0); |
39 | |
37 | |
40 | GEventAPI->stop (pe->up, 0); |
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41 | |
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42 | if (SvROK (cd_coro)) |
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43 | { |
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44 | CORO_READY (cd_coro); |
38 | CORO_READY (coro); |
45 | NEED_SCHEDULE; |
39 | SvREFCNT_dec (coro); |
46 | } |
40 | } |
47 | } |
41 | } |
48 | |
42 | |
49 | static void |
43 | static void |
50 | scheduler_cb(pe_event *pe) |
44 | asynccheck_hook (void *data) |
51 | { |
45 | { |
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46 | /* ceding from C means allocating a stack, but we assume this is a rare case */ |
52 | while (CORO_NREADY) |
47 | while (CORO_NREADY) |
53 | CORO_CEDE; |
48 | CORO_CEDE; |
54 | |
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55 | do_schedule = 0; |
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56 | } |
49 | } |
57 | |
50 | |
58 | MODULE = Coro::Event PACKAGE = Coro::Event |
51 | MODULE = Coro::Event PACKAGE = Coro::Event |
59 | |
52 | |
60 | PROTOTYPES: ENABLE |
53 | PROTOTYPES: ENABLE |
61 | |
54 | |
62 | BOOT: |
55 | BOOT: |
63 | { |
56 | { |
64 | I_EVENT_API("Coro::Event"); |
57 | I_EVENT_API ("Coro::Event"); |
65 | I_CORO_API ("Coro::Event"); |
58 | I_CORO_API ("Coro::Event"); |
66 | |
59 | |
67 | ev_stash = gv_stashpv (EV_CLASS, TRUE); |
60 | GEventAPI->add_hook ("asynccheck", (void *)asynccheck_hook, 0); |
68 | |
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69 | /* create a fake idle handler (we only ever call now) */ |
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70 | scheduler = GEventAPI->new_idle (0, 0); |
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71 | scheduler->base.callback = scheduler_cb; |
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72 | scheduler->min_interval = newSVnv (0); |
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73 | scheduler->max_interval = newSVnv (0); |
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74 | GEventAPI->stop ((pe_watcher *)scheduler, 0); |
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75 | } |
61 | } |
76 | |
62 | |
77 | void |
63 | void |
78 | _install_std_cb(self,type) |
64 | _install_std_cb (SV *self, int type) |
79 | SV * self |
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80 | int type |
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81 | CODE: |
65 | CODE: |
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66 | { |
82 | pe_watcher *w = GEventAPI->sv_2watcher (self); |
67 | pe_watcher *w = GEventAPI->sv_2watcher (self); |
83 | AV *priv = newAV (); |
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84 | SV *rv; |
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85 | |
68 | |
86 | av_extend (priv, CD_MAX); |
69 | if (w->callback) |
87 | av_store (priv, CD_TYPE, newSViv (type)); |
70 | croak ("Coro::Event watchers must not have a callback (see Coro::Event), caught"); |
88 | |
71 | |
89 | rv = sv_bless (newRV_noinc ((SV *)priv), ev_stash); |
72 | { |
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73 | AV *priv = newAV (); |
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74 | SV *rv = newRV_noinc ((SV *)priv); |
90 | |
75 | |
91 | hv_store ((HV *)SvRV (self), |
76 | av_fill (priv, CD_MAX); |
92 | EV_CLASS, strlen (EV_CLASS), |
77 | AvARRAY (priv)[CD_WAIT] = newAV (); /* badbad */ |
93 | rv, 0); |
78 | AvARRAY (priv)[CD_TYPE] = newSViv (type); |
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79 | AvARRAY (priv)[CD_OK ] = &PL_sv_no; |
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80 | AvARRAY (priv)[CD_HITS] = newSViv (0); |
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81 | AvARRAY (priv)[CD_GOT ] = newSViv (0); |
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82 | SvREADONLY_on (priv); |
94 | |
83 | |
95 | w->ext_data = rv; |
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96 | w->callback = coro_std_cb; |
84 | w->callback = coro_std_cb; |
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85 | w->ext_data = priv; |
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86 | |
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87 | /* make sure Event does not use PERL_MAGIC_uvar, which */ |
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88 | /* we abuse for non-uvar purposes. */ |
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89 | sv_magicext (SvRV (self), rv, PERL_MAGIC_uvar, 0, 0, 0); |
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90 | } |
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91 | } |
97 | |
92 | |
98 | void |
93 | void |
99 | _next0(self) |
94 | _next (SV *self) |
100 | SV * self |
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101 | CODE: |
95 | CODE: |
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96 | { |
102 | pe_watcher *w = GEventAPI->sv_2watcher (self); |
97 | pe_watcher *w = GEventAPI->sv_2watcher (self); |
103 | AV *priv = (AV *)SvRV ((SV *)w->ext_data); |
98 | AV *priv = (AV *)w->ext_data; |
104 | |
99 | |
105 | GEventAPI->start (w, 1); |
100 | if (AvARRAY (priv)[CD_OK] == &PL_sv_yes) |
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101 | { |
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102 | AvARRAY (priv)[CD_OK] = &PL_sv_no; |
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103 | XSRETURN_NO; /* got an event */ |
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104 | } |
106 | |
105 | |
107 | if (SvROK (*av_fetch (priv, CD_CORO, 1))) |
106 | av_push ((AV *)AvARRAY (priv)[CD_WAIT], SvREFCNT_inc (CORO_CURRENT)); |
108 | croak ("only one coroutine can wait for an event"); |
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109 | |
107 | |
110 | av_store (priv, CD_CORO, SvREFCNT_inc (CORO_CURRENT)); |
108 | if (!w->running) |
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109 | GEventAPI->start (w, 1); |
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110 | |
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111 | XSRETURN_YES; /* schedule */ |
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112 | } |
111 | |
113 | |
112 | SV * |
114 | SV * |
113 | _next1(self) |
115 | _event (SV *self) |
114 | SV * self |
116 | CODE: |
115 | CODE: |
117 | { |
116 | pe_watcher *w = GEventAPI->sv_2watcher (self); |
118 | if (GIMME_V == G_VOID) |
117 | AV *priv = (AV *)SvRV ((SV *)w->ext_data); |
119 | XSRETURN_EMPTY; |
118 | |
120 | |
119 | av_store (priv, CD_CORO, &PL_sv_undef); |
121 | { |
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122 | pe_watcher *w = GEventAPI->sv_2watcher (self); |
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123 | AV *priv = (AV *)w->ext_data; |
120 | |
124 | |
121 | RETVAL = SvREFCNT_inc ((SV *)w->ext_data); |
125 | RETVAL = newRV_inc ((SV *)priv); |
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126 | } |
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127 | } |
122 | OUTPUT: |
128 | OUTPUT: |
123 | RETVAL |
129 | RETVAL |
124 | |
130 | |