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2 | #include "perl.h" |
2 | #include "perl.h" |
3 | #include "XSUB.h" |
3 | #include "XSUB.h" |
4 | |
4 | |
5 | #include <string.h> |
5 | #include <string.h> |
6 | |
6 | |
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7 | /* this useful idiom is unfortunately missing... */ |
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8 | static void |
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9 | confess (const char *msg) |
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10 | { |
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11 | dSP; |
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12 | |
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13 | PUSHMARK(SP); |
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14 | XPUSHs (sv_2mortal(newSVpv("only one coroutine can wait for an event at any given time",0))); |
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15 | PUTBACK; |
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16 | call_pv ("Carp::confess", G_VOID); |
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17 | } |
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18 | |
7 | #include "EventAPI.h" |
19 | #include "EventAPI.h" |
8 | #include "../Coro/CoroAPI.h" |
20 | #include "../Coro/CoroAPI.h" |
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21 | |
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22 | #ifndef PE_PERLCB |
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23 | # define PE_PERLCB 0x020 /* not public, but we need it :( */ |
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24 | #endif |
9 | |
25 | |
10 | #define CD_CORO 0 |
26 | #define CD_CORO 0 |
11 | #define CD_TYPE 1 |
27 | #define CD_TYPE 1 |
12 | #define CD_OK 2 |
28 | #define CD_OK 2 |
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29 | #define CD_PRIO 3 /* hardcoded in Coro::Event */ |
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30 | #define CD_HITS 4 /* hardcoded in Coro::Event */ |
13 | #define CD_GOT 3 /* hardcoded in Coro::Event, Coro::Handle */ |
31 | #define CD_GOT 5 /* hardcoded in Coro::Event, Coro::Handle */ |
14 | #define CD_MAX 3 |
32 | #define CD_MAX 5 |
15 | /* no support for hits and prio so far. */ |
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16 | |
33 | |
17 | #define EV_CLASS "Coro::Event" |
34 | #define EV_CLASS "Coro::Event" |
18 | |
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19 | static pe_idle *scheduler; |
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20 | static int do_schedule; |
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21 | |
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22 | #define NEED_SCHEDULE if (!do_schedule) \ |
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23 | { \ |
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24 | do_schedule = 1; \ |
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25 | GEventAPI->now ((pe_watcher *)scheduler); \ |
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26 | } |
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27 | |
35 | |
28 | static void |
36 | static void |
29 | coro_std_cb(pe_event *pe) |
37 | coro_std_cb(pe_event *pe) |
30 | { |
38 | { |
31 | AV *priv = (AV *)SvRV ((SV *)pe->ext_data); |
39 | AV *priv = (AV *)pe->ext_data; |
32 | IV type = SvIV (*av_fetch (priv, CD_TYPE, 1)); |
40 | IV type = SvIV (*av_fetch (priv, CD_TYPE, 1)); |
33 | SV *cd_coro = *av_fetch (priv, CD_CORO, 1); |
41 | SV **cd_coro = &AvARRAY(priv)[CD_CORO]; |
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42 | |
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43 | sv_setiv (AvARRAY(priv)[CD_PRIO], pe->prio); |
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44 | sv_setiv (AvARRAY(priv)[CD_HITS], pe->hits); |
34 | |
45 | |
35 | if (type == 1) |
46 | if (type == 1) |
36 | av_store (priv, CD_GOT, newSViv (((pe_ioevent *)pe)->got)); |
47 | sv_setiv (AvARRAY(priv)[CD_GOT], ((pe_ioevent *)pe)->got); |
37 | |
48 | |
38 | if (SvROK (cd_coro)) |
49 | if (*cd_coro != &PL_sv_undef) |
39 | { |
50 | { |
40 | CORO_READY (cd_coro); |
51 | CORO_READY (*cd_coro); |
41 | av_store (priv, CD_CORO, &PL_sv_undef); |
52 | SvREFCNT_dec (*cd_coro); |
42 | NEED_SCHEDULE; |
53 | *cd_coro = &PL_sv_undef; |
43 | } |
54 | } |
44 | else |
55 | else |
45 | { |
56 | { |
46 | av_store (priv, CD_OK, &PL_sv_yes); |
57 | AvARRAY(priv)[CD_OK] = &PL_sv_yes; |
47 | GEventAPI->stop (pe->up, 0); |
58 | GEventAPI->stop (pe->up, 0); |
48 | } |
59 | } |
49 | } |
60 | } |
50 | |
61 | |
51 | static void |
62 | static double |
52 | scheduler_cb(pe_event *pe) |
63 | prepare_hook (void *data) |
53 | { |
64 | { |
54 | while (CORO_NREADY) |
65 | while (CORO_NREADY) |
55 | CORO_CEDE; |
66 | CORO_CEDE; |
56 | |
67 | |
57 | do_schedule = 0; |
68 | return 1e10; |
58 | } |
69 | } |
59 | |
70 | |
60 | MODULE = Coro::Event PACKAGE = Coro::Event |
71 | MODULE = Coro::Event PACKAGE = Coro::Event |
61 | |
72 | |
62 | PROTOTYPES: ENABLE |
73 | PROTOTYPES: ENABLE |
63 | |
74 | |
64 | BOOT: |
75 | BOOT: |
65 | { |
76 | { |
66 | I_EVENT_API("Coro::Event"); |
77 | I_EVENT_API ("Coro::Event"); |
67 | I_CORO_API ("Coro::Event"); |
78 | I_CORO_API ("Coro::Event"); |
68 | |
79 | |
69 | /* create a fake idle handler (we only ever call now) */ |
80 | GEventAPI->add_hook ("prepare", (void *)prepare_hook, 0); |
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 | } |
81 | } |
76 | |
82 | |
77 | void |
83 | void |
78 | _install_std_cb(self,type) |
84 | _install_std_cb(self,type) |
79 | SV * self |
85 | SV * self |
80 | int type |
86 | int type |
81 | CODE: |
87 | CODE: |
82 | pe_watcher *w = GEventAPI->sv_2watcher (self); |
88 | pe_watcher *w = GEventAPI->sv_2watcher (self); |
83 | AV *priv = newAV (); |
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84 | SV *rv = newRV_noinc ((SV *)priv); |
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85 | |
89 | |
86 | av_extend (priv, CD_MAX); |
90 | if (WaFLAGS (w) & PE_PERLCB) |
87 | av_store (priv, CD_TYPE, newSViv (type)); |
91 | croak ("Coro::Event watchers must not have a perl callback (see Coro::Event), caught"); |
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92 | { |
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93 | AV *priv = newAV (); |
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94 | SV *rv = newRV_noinc ((SV *)priv); |
88 | |
95 | |
89 | w->callback = coro_std_cb; |
96 | av_extend (priv, CD_MAX); |
90 | w->ext_data = rv; |
97 | av_store (priv, CD_CORO, &PL_sv_undef); |
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98 | av_store (priv, CD_TYPE, newSViv (type)); |
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99 | av_store (priv, CD_OK , &PL_sv_no); |
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100 | av_store (priv, CD_PRIO, newSViv (0)); |
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101 | av_store (priv, CD_HITS, newSViv (0)); |
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102 | av_store (priv, CD_GOT , type ? newSViv (0) : &PL_sv_undef); |
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103 | SvREADONLY_on (priv); |
91 | |
104 | |
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105 | w->callback = coro_std_cb; |
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106 | w->ext_data = priv; |
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107 | |
92 | hv_store ((HV *)SvRV (self), |
108 | hv_store ((HV *)SvRV (self), |
93 | EV_CLASS, strlen (EV_CLASS), |
109 | EV_CLASS, strlen (EV_CLASS), |
94 | rv, 0); |
110 | rv, 0); |
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111 | |
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112 | GEventAPI->start (w, 0); |
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113 | } |
95 | |
114 | |
96 | void |
115 | void |
97 | _next(self) |
116 | _next(self) |
98 | SV * self |
117 | SV * self |
99 | CODE: |
118 | CODE: |
100 | pe_watcher *w = GEventAPI->sv_2watcher (self); |
119 | pe_watcher *w = GEventAPI->sv_2watcher (self); |
101 | AV *priv = (AV *)SvRV ((SV *)w->ext_data); |
120 | AV *priv = (AV *)w->ext_data; |
102 | |
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103 | if (SvOK (*av_fetch (priv, CD_CORO, 1))) |
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104 | croak ("only one coroutine can wait for an event"); |
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105 | |
121 | |
106 | if (!w->running) |
122 | if (!w->running) |
107 | GEventAPI->start (w, 1); |
123 | GEventAPI->start (w, 1); |
108 | |
124 | |
109 | if (*av_fetch (priv, CD_OK, 1) == &PL_sv_yes) |
125 | if (AvARRAY(priv)[CD_OK] == &PL_sv_yes) |
110 | { |
126 | { |
111 | av_store (priv, CD_OK, &PL_sv_no); |
127 | AvARRAY(priv)[CD_OK] = &PL_sv_no; |
112 | XSRETURN_NO; |
128 | XSRETURN_NO; |
113 | } |
129 | } |
114 | else |
130 | else |
115 | { |
131 | { |
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132 | if (AvARRAY(priv)[CD_CORO] != &PL_sv_undef) |
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133 | confess ("only one coroutine can wait for an event"); |
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134 | |
116 | av_store (priv, CD_CORO, SvREFCNT_inc (CORO_CURRENT)); |
135 | AvARRAY(priv)[CD_CORO] = SvREFCNT_inc (CORO_CURRENT); |
117 | XSRETURN_YES; |
136 | XSRETURN_YES; |
118 | } |
137 | } |
119 | |
138 | |