| 1 |
#include "EXTERN.h" |
| 2 |
#include "perl.h" |
| 3 |
#include "XSUB.h" |
| 4 |
|
| 5 |
#include <assert.h> |
| 6 |
#include <string.h> |
| 7 |
|
| 8 |
#include "EventAPI.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 |
static int |
| 21 |
coro_ev_free (pTHX_ SV *sv, MAGIC *mg) |
| 22 |
{ |
| 23 |
*(void **)mg->mg_ptr = 0; |
| 24 |
|
| 25 |
return 0; |
| 26 |
} |
| 27 |
|
| 28 |
#define PERL_MAGIC_coro_event 0x18 /* to avoid clashes with e.g. event */ |
| 29 |
|
| 30 |
static MGVTBL vtbl_coro_event = {0, 0, 0, 0, coro_ev_free}; |
| 31 |
|
| 32 |
static void |
| 33 |
coro_std_cb (pe_event *pe) |
| 34 |
{ |
| 35 |
if (pe->up->ext_data) |
| 36 |
{ |
| 37 |
AV *priv = (AV *)pe->ext_data; |
| 38 |
IV type = SvIV (AvARRAY (priv)[CD_TYPE]); |
| 39 |
AV *cd_wait; |
| 40 |
SV *coro; |
| 41 |
|
| 42 |
SvIV_set (AvARRAY (priv)[CD_HITS], pe->hits); |
| 43 |
SvIV_set (AvARRAY (priv)[CD_GOT], type ? ((pe_ioevent *)pe)->got : 0); |
| 44 |
|
| 45 |
AvARRAY (priv)[CD_OK] = &PL_sv_yes; |
| 46 |
|
| 47 |
cd_wait = (AV *)AvARRAY(priv)[CD_WAIT]; |
| 48 |
|
| 49 |
coro = av_shift (cd_wait); |
| 50 |
if (coro != &PL_sv_undef) |
| 51 |
{ |
| 52 |
CORO_READY (coro); |
| 53 |
SvREFCNT_dec (coro); |
| 54 |
} |
| 55 |
|
| 56 |
if (av_len (cd_wait) < 0) |
| 57 |
GEventAPI->stop (pe->up, 0); |
| 58 |
} |
| 59 |
} |
| 60 |
|
| 61 |
static void |
| 62 |
asynccheck_hook (void *data) |
| 63 |
{ |
| 64 |
/* this loops as long as we have _other_ coros with the same or higher priority */ |
| 65 |
while (CORO_NREADY && CORO_CEDE) |
| 66 |
; |
| 67 |
} |
| 68 |
|
| 69 |
static double |
| 70 |
prepare_hook (void *data) |
| 71 |
{ |
| 72 |
/* this yields once to another coro with any priority */ |
| 73 |
if (CORO_NREADY) |
| 74 |
{ |
| 75 |
CORO_CEDE_NOTSELF; |
| 76 |
/* |
| 77 |
* timers might have changed, and Event fails to notice this |
| 78 |
* so we have to assume the worst. If Event didn't have that bug, |
| 79 |
* we would only need to do this if CORO_NREADY is != 0 now. |
| 80 |
*/ |
| 81 |
return 0.; |
| 82 |
} |
| 83 |
else |
| 84 |
return 85197.73; /* this is as good as any value, but it factors badly with common values */ |
| 85 |
} |
| 86 |
|
| 87 |
MODULE = Coro::Event PACKAGE = Coro::Event |
| 88 |
|
| 89 |
PROTOTYPES: ENABLE |
| 90 |
|
| 91 |
BOOT: |
| 92 |
{ |
| 93 |
coro_event_event_stash = gv_stashpv ("Coro::Event::Event", TRUE); |
| 94 |
|
| 95 |
I_EVENT_API ("Coro::Event"); |
| 96 |
I_CORO_API ("Coro::Event"); |
| 97 |
|
| 98 |
GEventAPI->add_hook ("asynccheck", (void *)asynccheck_hook, 0); |
| 99 |
GEventAPI->add_hook ("prepare", (void *)prepare_hook, 0); |
| 100 |
} |
| 101 |
|
| 102 |
void |
| 103 |
_install_std_cb (SV *self, int type) |
| 104 |
CODE: |
| 105 |
{ |
| 106 |
pe_watcher *w = GEventAPI->sv_2watcher (self); |
| 107 |
|
| 108 |
if (w->callback) |
| 109 |
croak ("Coro::Event watchers must not have a callback (see Coro::Event), caught"); |
| 110 |
|
| 111 |
{ |
| 112 |
AV *priv = newAV (); |
| 113 |
|
| 114 |
av_fill (priv, CD_MAX); |
| 115 |
AvARRAY (priv)[CD_WAIT] = (SV *)newAV (); /* AV in AV _should_ not be exposed to perl */ |
| 116 |
AvARRAY (priv)[CD_TYPE] = newSViv (type); |
| 117 |
AvARRAY (priv)[CD_OK ] = &PL_sv_no; |
| 118 |
AvARRAY (priv)[CD_HITS] = newSViv (0); |
| 119 |
AvARRAY (priv)[CD_GOT ] = newSViv (0); |
| 120 |
SvREADONLY_on (priv); |
| 121 |
|
| 122 |
w->callback = coro_std_cb; |
| 123 |
w->ext_data = priv; |
| 124 |
|
| 125 |
sv_magicext (SvRV (self), newRV_noinc ((SV *)priv), PERL_MAGIC_coro_event, &vtbl_coro_event, &w->ext_data, 0); |
| 126 |
} |
| 127 |
} |
| 128 |
|
| 129 |
void |
| 130 |
_next (SV *self) |
| 131 |
CODE: |
| 132 |
{ |
| 133 |
pe_watcher *w = GEventAPI->sv_2watcher (self); |
| 134 |
AV *priv = (AV *)w->ext_data; |
| 135 |
|
| 136 |
if (AvARRAY (priv)[CD_OK] == &PL_sv_yes) |
| 137 |
{ |
| 138 |
AvARRAY (priv)[CD_OK] = &PL_sv_no; |
| 139 |
XSRETURN_NO; /* got an event */ |
| 140 |
} |
| 141 |
|
| 142 |
av_push ((AV *)AvARRAY (priv)[CD_WAIT], SvREFCNT_inc (CORO_CURRENT)); |
| 143 |
|
| 144 |
if (!w->running) |
| 145 |
GEventAPI->start (w, 1); |
| 146 |
|
| 147 |
XSRETURN_YES; /* schedule */ |
| 148 |
} |
| 149 |
|
| 150 |
SV * |
| 151 |
_event (SV *self) |
| 152 |
CODE: |
| 153 |
{ |
| 154 |
if (GIMME_V == G_VOID) |
| 155 |
XSRETURN_EMPTY; |
| 156 |
|
| 157 |
{ |
| 158 |
pe_watcher *w = GEventAPI->sv_2watcher (self); |
| 159 |
AV *priv = (AV *)w->ext_data; |
| 160 |
|
| 161 |
RETVAL = newRV_inc ((SV *)priv); |
| 162 |
|
| 163 |
/* may need to bless it now */ |
| 164 |
if (!SvOBJECT (priv)) |
| 165 |
{ |
| 166 |
SvREADONLY_off ((SV *)priv); |
| 167 |
sv_bless (RETVAL, coro_event_event_stash); |
| 168 |
SvREADONLY_on ((SV *)priv); |
| 169 |
} |
| 170 |
} |
| 171 |
} |
| 172 |
OUTPUT: |
| 173 |
RETVAL |
| 174 |
|
