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 | |
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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 | |
19 | #include "EventAPI.h" |
8 | #include "EventAPI.h" |
20 | #include "../Coro/CoroAPI.h" |
9 | #include "../Coro/CoroAPI.h" |
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 |
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25 | |
10 | |
26 | #define CD_CORO 0 |
11 | #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 | #define CD_PRIO 3 /* hardcoded in Coro::Event */ |
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" |
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35 | |
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36 | static void |
19 | static void |
37 | coro_std_cb(pe_event *pe) |
20 | coro_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]); |
41 | SV **cd_coro = &AvARRAY(priv)[CD_CORO]; |
24 | SV **cd_coro; |
42 | |
25 | |
43 | sv_setiv (AvARRAY(priv)[CD_PRIO], pe->prio); |
26 | SvIV_set (AvARRAY (priv)[CD_PRIO], pe->prio); |
44 | sv_setiv (AvARRAY(priv)[CD_HITS], pe->hits); |
27 | SvIV_set (AvARRAY (priv)[CD_HITS], pe->hits); |
45 | |
28 | |
46 | if (type == 1) |
29 | if (type == 1) |
47 | sv_setiv (AvARRAY(priv)[CD_GOT], ((pe_ioevent *)pe)->got); |
30 | SvIV_set (AvARRAY (priv)[CD_GOT], ((pe_ioevent *)pe)->got); |
48 | |
31 | |
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32 | GEventAPI->stop (pe->up, 0); |
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33 | |
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34 | AvARRAY (priv)[CD_OK] = &PL_sv_yes; |
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35 | |
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36 | cd_coro = &AvARRAY(priv)[CD_CORO]; |
49 | if (*cd_coro != &PL_sv_undef) |
37 | if (*cd_coro != &PL_sv_undef) |
50 | { |
38 | { |
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39 | AvARRAY (priv)[CD_OK] = &PL_sv_yes; |
51 | CORO_READY (*cd_coro); |
40 | CORO_READY (*cd_coro); |
52 | SvREFCNT_dec (*cd_coro); |
41 | SvREFCNT_dec (*cd_coro); |
53 | *cd_coro = &PL_sv_undef; |
42 | *cd_coro = &PL_sv_undef; |
54 | } |
43 | } |
55 | else |
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56 | { |
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57 | AvARRAY(priv)[CD_OK] = &PL_sv_yes; |
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58 | GEventAPI->stop (pe->up, 0); |
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59 | } |
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60 | } |
44 | } |
61 | |
45 | |
62 | static double |
46 | static void |
63 | prepare_hook (void *data) |
47 | asynccheck_hook (void *data) |
64 | { |
48 | { |
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49 | /* ceding from C means allocating a stack, but we assume this is a rare case */ |
65 | while (CORO_NREADY) |
50 | while (CORO_NREADY) |
66 | CORO_CEDE; |
51 | CORO_CEDE; |
67 | |
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68 | return 1e20; |
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69 | } |
52 | } |
70 | |
53 | |
71 | MODULE = Coro::Event PACKAGE = Coro::Event |
54 | MODULE = Coro::Event PACKAGE = Coro::Event |
72 | |
55 | |
73 | PROTOTYPES: ENABLE |
56 | PROTOTYPES: ENABLE |
… | |
… | |
75 | BOOT: |
58 | BOOT: |
76 | { |
59 | { |
77 | I_EVENT_API ("Coro::Event"); |
60 | I_EVENT_API ("Coro::Event"); |
78 | I_CORO_API ("Coro::Event"); |
61 | I_CORO_API ("Coro::Event"); |
79 | |
62 | |
80 | GEventAPI->add_hook ("prepare", (void *)prepare_hook, 0); |
63 | GEventAPI->add_hook ("asynccheck", (void *)asynccheck_hook, 0); |
81 | } |
64 | } |
82 | |
65 | |
83 | void |
66 | void |
84 | _install_std_cb(self,type) |
67 | _install_std_cb (SV *self, int type) |
85 | SV * self |
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86 | int type |
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87 | CODE: |
68 | CODE: |
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69 | { |
88 | pe_watcher *w = GEventAPI->sv_2watcher (self); |
70 | pe_watcher *w = GEventAPI->sv_2watcher (self); |
89 | |
71 | |
90 | if (WaFLAGS (w) & PE_PERLCB) |
72 | if (w->callback) |
91 | croak ("Coro::Event watchers must not have a perl callback (see Coro::Event), caught"); |
73 | croak ("Coro::Event watchers must not have a callback (see Coro::Event), caught"); |
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74 | |
92 | { |
75 | { |
93 | AV *priv = newAV (); |
76 | AV *priv = newAV (); |
94 | SV *rv = newRV_noinc ((SV *)priv); |
77 | SV *rv = newRV_noinc ((SV *)priv); |
95 | |
78 | |
96 | av_extend (priv, CD_MAX); |
79 | av_extend (priv, CD_MAX); |
97 | av_store (priv, CD_CORO, &PL_sv_undef); |
80 | AvARRAY (priv)[CD_CORO] = &PL_sv_undef; |
98 | av_store (priv, CD_TYPE, newSViv (type)); |
81 | AvARRAY (priv)[CD_TYPE] = newSViv (type); |
99 | av_store (priv, CD_OK , &PL_sv_no); |
82 | AvARRAY (priv)[CD_OK ] = &PL_sv_no; |
100 | av_store (priv, CD_PRIO, newSViv (0)); |
83 | AvARRAY (priv)[CD_PRIO] = newSViv (0); |
101 | av_store (priv, CD_HITS, newSViv (0)); |
84 | AvARRAY (priv)[CD_HITS] = newSViv (0); |
102 | av_store (priv, CD_GOT , type ? newSViv (0) : &PL_sv_undef); |
85 | AvARRAY (priv)[CD_GOT ] = newSViv (0); |
103 | SvREADONLY_on (priv); |
86 | SvREADONLY_on (priv); |
104 | |
87 | |
105 | w->callback = coro_std_cb; |
88 | w->callback = coro_std_cb; |
106 | w->ext_data = priv; |
89 | w->ext_data = priv; |
107 | |
90 | |
108 | hv_store ((HV *)SvRV (self), |
91 | /* make sure Event does not use PERL_MAGIC_uvar, which */ |
109 | EV_CLASS, strlen (EV_CLASS), |
92 | /* we abuse for non-uvar purposes. */ |
110 | rv, 0); |
93 | sv_magicext (SvRV (self), rv, PERL_MAGIC_uvar, 0, 0, 0); |
111 | |
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112 | GEventAPI->start (w, 0); |
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113 | } |
94 | } |
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95 | } |
114 | |
96 | |
115 | void |
97 | void |
116 | _next(self) |
98 | _next (SV *self) |
117 | SV * self |
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118 | CODE: |
99 | CODE: |
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100 | { |
119 | pe_watcher *w = GEventAPI->sv_2watcher (self); |
101 | pe_watcher *w = GEventAPI->sv_2watcher (self); |
120 | AV *priv = (AV *)w->ext_data; |
102 | AV *priv = (AV *)w->ext_data; |
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103 | |
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104 | if (AvARRAY (priv)[CD_OK] == &PL_sv_yes) |
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105 | { |
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106 | AvARRAY (priv)[CD_OK] = &PL_sv_no; |
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107 | XSRETURN_NO; /* got an event */ |
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108 | } |
121 | |
109 | |
122 | if (!w->running) |
110 | if (!w->running) |
123 | GEventAPI->start (w, 1); |
111 | GEventAPI->start (w, 1); |
124 | |
112 | |
125 | if (AvARRAY(priv)[CD_OK] == &PL_sv_yes) |
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126 | { |
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127 | AvARRAY(priv)[CD_OK] = &PL_sv_no; |
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128 | XSRETURN_NO; |
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129 | } |
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130 | else |
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131 | { |
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132 | if (AvARRAY(priv)[CD_CORO] != &PL_sv_undef) |
113 | if (AvARRAY (priv)[CD_CORO] == &PL_sv_undef) |
133 | confess ("only one coroutine can wait for an event"); |
114 | AvARRAY (priv)[CD_CORO] = SvREFCNT_inc (CORO_CURRENT); |
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115 | else if (AvARRAY (priv)[CD_CORO] != CORO_CURRENT) |
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116 | croak ("Coro::Event::next can only be called from a single coroutine at a time, caught"); |
134 | |
117 | |
135 | AvARRAY(priv)[CD_CORO] = SvREFCNT_inc (CORO_CURRENT); |
118 | XSRETURN_YES; /* schedule */ |
136 | XSRETURN_YES; |
119 | } |
137 | } |
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138 | |
120 | |