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> |
5 | #include <string.h> |
6 | #include <string.h> |
6 | |
|
|
7 | /* this useful idiom is unfortunately missing... */ |
|
|
8 | static void |
|
|
9 | confess (const char *msg) |
|
|
10 | { |
|
|
11 | dSP; |
|
|
12 | |
|
|
13 | PUSHMARK(SP); |
|
|
14 | XPUSHs (sv_2mortal(newSVpv("only one coroutine can wait for an event",0))); |
|
|
15 | PUTBACK; |
|
|
16 | call_pv ("Carp::confess", G_VOID); |
|
|
17 | } |
|
|
18 | |
7 | |
19 | #include "EventAPI.h" |
8 | #include "EventAPI.h" |
20 | #include "../Coro/CoroAPI.h" |
9 | #include "../Coro/CoroAPI.h" |
21 | |
10 | |
22 | #define CD_CORO 0 |
11 | #define CD_CORO 0 |
… | |
… | |
25 | #define CD_PRIO 3 /* hardcoded in Coro::Event */ |
14 | #define CD_PRIO 3 /* hardcoded in Coro::Event */ |
26 | #define CD_HITS 4 /* hardcoded in Coro::Event */ |
15 | #define CD_HITS 4 /* hardcoded in Coro::Event */ |
27 | #define CD_GOT 5 /* hardcoded in Coro::Event, Coro::Handle */ |
16 | #define CD_GOT 5 /* hardcoded in Coro::Event, Coro::Handle */ |
28 | #define CD_MAX 5 |
17 | #define CD_MAX 5 |
29 | |
18 | |
30 | #define EV_CLASS "Coro::Event" |
|
|
31 | |
|
|
32 | static pe_idle *scheduler; |
|
|
33 | static int do_schedule; |
|
|
34 | |
|
|
35 | #define NEED_SCHEDULE if (!do_schedule) \ |
|
|
36 | { \ |
|
|
37 | do_schedule = 1; \ |
|
|
38 | GEventAPI->now ((pe_watcher *)scheduler); \ |
|
|
39 | } |
|
|
40 | |
|
|
41 | static void |
19 | static void |
42 | coro_std_cb(pe_event *pe) |
20 | coro_std_cb (pe_event *pe) |
43 | { |
21 | { |
44 | AV *priv = (AV *)pe->ext_data; |
22 | AV *priv = (AV *)pe->ext_data; |
45 | IV type = SvIV (*av_fetch (priv, CD_TYPE, 1)); |
23 | IV type = SvIV (AvARRAY (priv)[CD_TYPE]); |
46 | SV **cd_coro = &AvARRAY(priv)[CD_CORO]; |
24 | SV **cd_coro; |
47 | |
25 | |
48 | sv_setiv (AvARRAY(priv)[CD_PRIO], pe->prio); |
26 | SvIV_set (AvARRAY (priv)[CD_PRIO], pe->prio); |
49 | sv_setiv (AvARRAY(priv)[CD_HITS], pe->hits); |
27 | SvIV_set (AvARRAY (priv)[CD_HITS], pe->hits); |
50 | |
28 | |
51 | if (type == 1) |
29 | if (type == 1) |
52 | sv_setiv (AvARRAY(priv)[CD_GOT], ((pe_ioevent *)pe)->got); |
30 | SvIV_set (AvARRAY (priv)[CD_GOT], ((pe_ioevent *)pe)->got); |
53 | |
31 | |
|
|
32 | GEventAPI->stop (pe->up, 0); |
|
|
33 | |
|
|
34 | AvARRAY (priv)[CD_OK] = &PL_sv_yes; |
|
|
35 | |
|
|
36 | cd_coro = &AvARRAY(priv)[CD_CORO]; |
54 | if (*cd_coro != &PL_sv_undef) |
37 | if (*cd_coro != &PL_sv_undef) |
55 | { |
38 | { |
|
|
39 | AvARRAY (priv)[CD_OK] = &PL_sv_yes; |
56 | CORO_READY (*cd_coro); |
40 | CORO_READY (*cd_coro); |
57 | SvREFCNT_dec (*cd_coro); |
41 | SvREFCNT_dec (*cd_coro); |
58 | *cd_coro = &PL_sv_undef; |
42 | *cd_coro = &PL_sv_undef; |
59 | NEED_SCHEDULE; |
|
|
60 | } |
|
|
61 | else |
|
|
62 | { |
|
|
63 | AvARRAY(priv)[CD_OK] = &PL_sv_yes; |
|
|
64 | GEventAPI->stop (pe->up, 0); |
|
|
65 | } |
43 | } |
66 | } |
44 | } |
67 | |
45 | |
68 | static void |
46 | static void |
69 | scheduler_cb(pe_event *pe) |
47 | asynccheck_hook (void *data) |
70 | { |
48 | { |
|
|
49 | /* ceding from C means allocating a stack, but we assume this is a rare case */ |
71 | while (CORO_NREADY) |
50 | while (CORO_NREADY) |
72 | CORO_CEDE; |
51 | CORO_CEDE; |
73 | |
|
|
74 | do_schedule = 0; |
|
|
75 | } |
52 | } |
76 | |
53 | |
77 | MODULE = Coro::Event PACKAGE = Coro::Event |
54 | MODULE = Coro::Event PACKAGE = Coro::Event |
78 | |
55 | |
79 | PROTOTYPES: ENABLE |
56 | PROTOTYPES: ENABLE |
80 | |
57 | |
81 | BOOT: |
58 | BOOT: |
82 | { |
59 | { |
83 | I_EVENT_API("Coro::Event"); |
60 | I_EVENT_API ("Coro::Event"); |
84 | I_CORO_API ("Coro::Event"); |
61 | I_CORO_API ("Coro::Event"); |
85 | |
62 | |
86 | /* create a fake idle handler (we only ever call now) */ |
63 | GEventAPI->add_hook ("asynccheck", (void *)asynccheck_hook, 0); |
87 | scheduler = GEventAPI->new_idle (0, 0); |
|
|
88 | scheduler->base.callback = scheduler_cb; |
|
|
89 | scheduler->base.prio = PE_PRIO_NORMAL; /* StarvePrio */ |
|
|
90 | scheduler->min_interval = newSVnv (0); |
|
|
91 | scheduler->max_interval = newSVnv (0); |
|
|
92 | GEventAPI->stop ((pe_watcher *)scheduler, 0); |
|
|
93 | } |
64 | } |
94 | |
65 | |
95 | void |
66 | void |
96 | _install_std_cb(self,type) |
67 | _install_std_cb (SV *self, int type) |
97 | SV * self |
|
|
98 | int type |
|
|
99 | CODE: |
68 | CODE: |
|
|
69 | { |
100 | pe_watcher *w = GEventAPI->sv_2watcher (self); |
70 | pe_watcher *w = GEventAPI->sv_2watcher (self); |
101 | AV *priv = newAV (); |
|
|
102 | SV *rv = newRV_noinc ((SV *)priv); |
|
|
103 | |
71 | |
104 | av_extend (priv, CD_MAX); |
72 | if (w->callback) |
105 | av_store (priv, CD_CORO, &PL_sv_undef); |
73 | croak ("Coro::Event watchers must not have a callback (see Coro::Event), caught"); |
106 | av_store (priv, CD_TYPE, newSViv (type)); |
|
|
107 | av_store (priv, CD_OK , &PL_sv_no); |
|
|
108 | av_store (priv, CD_PRIO, newSViv (0)); |
|
|
109 | av_store (priv, CD_HITS, newSViv (0)); |
|
|
110 | av_store (priv, CD_GOT , type ? newSViv (0) : &PL_sv_undef); |
|
|
111 | SvREADONLY_on (priv); |
|
|
112 | |
74 | |
113 | w->callback = coro_std_cb; |
75 | { |
114 | w->ext_data = priv; |
76 | AV *priv = newAV (); |
|
|
77 | SV *rv = newRV_noinc ((SV *)priv); |
115 | |
78 | |
116 | hv_store ((HV *)SvRV (self), |
79 | av_extend (priv, CD_MAX); |
117 | EV_CLASS, strlen (EV_CLASS), |
80 | AvARRAY (priv)[CD_CORO] = &PL_sv_undef; |
118 | rv, 0); |
81 | AvARRAY (priv)[CD_TYPE] = newSViv (type); |
|
|
82 | AvARRAY (priv)[CD_OK ] = &PL_sv_no; |
|
|
83 | AvARRAY (priv)[CD_PRIO] = newSViv (0); |
|
|
84 | AvARRAY (priv)[CD_HITS] = newSViv (0); |
|
|
85 | AvARRAY (priv)[CD_GOT ] = newSViv (0); |
|
|
86 | SvREADONLY_on (priv); |
119 | |
87 | |
120 | GEventAPI->start (w, 0); |
88 | w->callback = coro_std_cb; |
|
|
89 | w->ext_data = priv; |
|
|
90 | |
|
|
91 | /* make sure Event does not use PERL_MAGIC_uvar, which */ |
|
|
92 | /* we abuse for non-uvar purposes. */ |
|
|
93 | sv_magicext (SvRV (self), rv, PERL_MAGIC_uvar, 0, 0, 0); |
|
|
94 | } |
|
|
95 | } |
121 | |
96 | |
122 | void |
97 | void |
123 | _next(self) |
98 | _next (SV *self) |
124 | SV * self |
|
|
125 | CODE: |
99 | CODE: |
|
|
100 | { |
126 | pe_watcher *w = GEventAPI->sv_2watcher (self); |
101 | pe_watcher *w = GEventAPI->sv_2watcher (self); |
127 | AV *priv = (AV *)w->ext_data; |
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 | } |
128 | |
109 | |
129 | if (!w->running) |
110 | if (!w->running) |
130 | GEventAPI->start (w, 1); |
111 | GEventAPI->start (w, 1); |
131 | |
112 | |
132 | if (AvARRAY(priv)[CD_OK] == &PL_sv_yes) |
|
|
133 | { |
|
|
134 | AvARRAY(priv)[CD_OK] = &PL_sv_no; |
|
|
135 | XSRETURN_NO; |
|
|
136 | } |
|
|
137 | else |
|
|
138 | { |
|
|
139 | if (AvARRAY(priv)[CD_CORO] != &PL_sv_undef) |
113 | if (AvARRAY (priv)[CD_CORO] == &PL_sv_undef) |
140 | confess ("only one coroutine can wait for an event"); |
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"); |
141 | |
117 | |
142 | AvARRAY(priv)[CD_CORO] = SvREFCNT_inc (CORO_CURRENT); |
118 | XSRETURN_YES; /* schedule */ |
143 | XSRETURN_YES; |
119 | } |
144 | } |
|
|
145 | |
120 | |
146 | MODULE = Coro::Event PACKAGE = Coro |
|
|
147 | |
|
|
148 | # overwrite the ready function |
|
|
149 | void |
|
|
150 | ready(self) |
|
|
151 | SV * self |
|
|
152 | PROTOTYPE: $ |
|
|
153 | CODE: |
|
|
154 | NEED_SCHEDULE; |
|
|
155 | CORO_READY (self); |
|
|
156 | |
|
|
157 | |
|
|