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/cvs/EV/EV.xs
Revision: 1.10
Committed: Mon Oct 29 07:56:03 2007 UTC (16 years, 6 months ago) by root
Branch: MAIN
Changes since 1.9: +43 -5 lines
Log Message:
*** empty log message ***

File Contents

# Content
1 #include "EXTERN.h"
2 #include "perl.h"
3 #include "XSUB.h"
4
5 #include <math.h>
6 #include <netinet/in.h>
7
8 #include <sys/time.h>
9 #include <time.h>
10 #include <event.h>
11 #include <evdns.h>
12
13 /* workaround for evhttp.h requiring obscure bsd headers */
14 #ifndef TAILQ_ENTRY
15 #define TAILQ_ENTRY(type) \
16 struct { \
17 struct type *tqe_next; /* next element */ \
18 struct type **tqe_prev; /* address of previous next element */ \
19 }
20 #endif /* !TAILQ_ENTRY */
21 #include <evhttp.h>
22
23 #define EV_NONE 0
24 #define EV_UNDEF -1
25
26 #define TIMEOUT_NONE HUGE_VAL
27
28 typedef struct event_base *Base;
29 typedef int Signal;
30
31 static HV *stash_base, *stash_event;
32
33 static double tv_get (struct timeval *tv)
34 {
35 return tv->tv_sec + tv->tv_usec * 1e-6;
36 }
37
38 static void tv_set (struct timeval *tv, double val)
39 {
40 tv->tv_sec = (long)val;
41 tv->tv_usec = (long)((val - (double)tv->tv_sec) * 1e6);
42
43 }
44
45 static int
46 sv_signum (SV *sig)
47 {
48 int signum;
49
50 if (SvIV (sig) > 0)
51 return SvIV (sig);
52
53 for (signum = 1; signum < SIG_SIZE; ++signum)
54 if (strEQ (SvPV_nolen (sig), PL_sig_name [signum]))
55 return signum;
56
57 return -1;
58 }
59
60 /////////////////////////////////////////////////////////////////////////////
61 // Event
62
63 typedef struct ev {
64 struct event ev;
65 SV *cb, *fh;
66 SV *self; /* contains this struct */
67 double timeout;
68 double interval;
69 unsigned char active;
70 unsigned char abstime;
71 } *Event;
72
73 static double
74 e_now ()
75 {
76 struct timeval tv;
77 gettimeofday (&tv, 0);
78
79 return tv_get (&tv);
80 }
81
82 static void e_cb (int fd, short events, void *arg);
83
84 static int sv_fileno (SV *fh)
85 {
86 SvGETMAGIC (fh);
87
88 if (SvROK (fh))
89 fh = SvRV (fh);
90
91 if (SvTYPE (fh) == SVt_PVGV)
92 return PerlIO_fileno (IoIFP (sv_2io (fh)));
93
94 if (SvIOK (fh))
95 return SvIV (fh);
96
97 return -1;
98 }
99
100 static Event
101 e_new (SV *fh, short events, SV *cb)
102 {
103 int fd = sv_fileno (fh);
104 Event ev;
105 SV *self = NEWSV (0, sizeof (struct ev));
106 SvPOK_only (self);
107 SvCUR_set (self, sizeof (struct ev));
108
109 ev = (Event)SvPVX (self);
110
111 ev->fh = newSVsv (fh);
112 ev->cb = newSVsv (cb);
113 ev->self = self;
114 ev->timeout = TIMEOUT_NONE;
115 ev->interval = 0.;
116 ev->abstime = 0;
117 ev->active = 0;
118
119 event_set (&ev->ev, fd, events, e_cb, (void *)ev);
120
121 return ev;
122 }
123
124 static struct timeval *
125 e_tv (Event ev)
126 {
127 static struct timeval tv;
128 double to = ev->timeout;
129
130 if (to == TIMEOUT_NONE)
131 return 0;
132
133 if (ev->abstime)
134 {
135 double now = e_now ();
136
137 if (ev->interval)
138 ev->timeout = (to += ceil ((now - to) / ev->interval) * ev->interval);
139
140 to -= now;
141 }
142 else if (to < 0.)
143 to = 0.;
144
145 tv_set (&tv, to);
146
147 return &tv;
148 }
149
150 static SV *e_self (Event ev)
151 {
152 SV *rv;
153
154 if (SvOBJECT (ev->self))
155 rv = newRV_inc (ev->self);
156 else
157 {
158 rv = newRV_noinc (ev->self);
159 sv_bless (rv, stash_event);
160 SvREADONLY_on (ev->self);
161 }
162
163 return rv;
164 }
165
166 static int
167 e_start (Event ev)
168 {
169 if (ev->active) event_del (&ev->ev);
170 ev->active = 1;
171 return event_add (&ev->ev, e_tv (ev));
172 }
173
174 static int e_stop (Event ev)
175 {
176 return ev->active
177 ? (ev->active = 0), event_del (&ev->ev)
178 : 0;
179 }
180
181 static void
182 e_cb (int fd, short events, void *arg)
183 {
184 struct ev *ev = (struct ev*)arg;
185 dSP;
186
187 ENTER;
188 SAVETMPS;
189
190 if (!(ev->ev.ev_events & EV_PERSIST) || (events & EV_TIMEOUT))
191 ev->active = 0;
192
193 PUSHMARK (SP);
194 EXTEND (SP, 2);
195 PUSHs (sv_2mortal (e_self (ev)));
196 PUSHs (sv_2mortal (newSViv (events)));
197 PUTBACK;
198 call_sv (ev->cb, G_DISCARD | G_VOID | G_EVAL);
199
200 if (ev->interval && !ev->active)
201 e_start (ev);
202
203 FREETMPS;
204
205 if (SvTRUE (ERRSV))
206 {
207 PUSHMARK (SP);
208 PUTBACK;
209 call_sv (get_sv ("EV::DIED", 1), G_DISCARD | G_VOID | G_EVAL | G_KEEPERR);
210 }
211
212 LEAVE;
213 }
214
215 /////////////////////////////////////////////////////////////////////////////
216 // DNS
217
218 static void
219 dns_cb (int result, char type, int count, int ttl, void *addresses, void *arg)
220 {
221 dSP;
222 SV *cb = (SV *)arg;
223
224 ENTER;
225 SAVETMPS;
226 PUSHMARK (SP);
227 EXTEND (SP, count + 3);
228 PUSHs (sv_2mortal (newSViv (result)));
229
230 if (result == DNS_ERR_NONE && ttl >= 0)
231 {
232 int i;
233
234 PUSHs (sv_2mortal (newSViv (type)));
235 PUSHs (sv_2mortal (newSViv (ttl)));
236
237 for (i = 0; i < count; ++i)
238 switch (type)
239 {
240 case DNS_IPv6_AAAA:
241 PUSHs (sv_2mortal (newSVpvn (i * 16 + (char *)addresses, 16)));
242 break;
243 case DNS_IPv4_A:
244 PUSHs (sv_2mortal (newSVpvn (i * 4 + (char *)addresses, 4)));
245 break;
246 case DNS_PTR:
247 PUSHs (sv_2mortal (newSVpv (*(char **)addresses, 0)));
248 break;
249 }
250 }
251
252 PUTBACK;
253 call_sv (sv_2mortal (cb), G_DISCARD | G_VOID | G_EVAL);
254
255 FREETMPS;
256
257 if (SvTRUE (ERRSV))
258 {
259 PUSHMARK (SP);
260 PUTBACK;
261 call_sv (get_sv ("EV::DIED", 1), G_DISCARD | G_VOID | G_EVAL | G_KEEPERR);
262 }
263
264 LEAVE;
265 }
266
267 /////////////////////////////////////////////////////////////////////////////
268 // XS interface functions
269
270 MODULE = EV PACKAGE = EV PREFIX = event_
271
272 BOOT:
273 {
274 int i;
275 HV *stash = gv_stashpv ("EV", 1);
276
277 static const struct {
278 const char *name;
279 IV iv;
280 } *civ, const_iv[] = {
281 # define const_iv(pfx, name) { # name, (IV) pfx ## name },
282 const_iv (EV_, NONE)
283 const_iv (EV_, TIMEOUT)
284 const_iv (EV_, READ)
285 const_iv (EV_, WRITE)
286 const_iv (EV_, SIGNAL)
287 const_iv (EV_, PERSIST)
288 const_iv (EV, LOOP_ONCE)
289 const_iv (EV, LOOP_NONBLOCK)
290 const_iv (EV, BUFFER_READ)
291 const_iv (EV, BUFFER_WRITE)
292 const_iv (EV, BUFFER_EOF)
293 const_iv (EV, BUFFER_ERROR)
294 const_iv (EV, BUFFER_TIMEOUT)
295 };
296
297 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
298 newCONSTSUB (stash, (char *)civ->name, newSViv (civ->iv));
299
300 stash_base = gv_stashpv ("EV::Base" , 1);
301 stash_event = gv_stashpv ("EV::Event", 1);
302 }
303
304 double now ()
305 CODE:
306 RETVAL = e_now ();
307 OUTPUT:
308 RETVAL
309
310 const char *version ()
311 ALIAS:
312 method = 1
313 CODE:
314 RETVAL = ix ? event_get_method () : event_get_version ();
315 OUTPUT:
316 RETVAL
317
318 Base event_init ()
319
320 int event_priority_init (int npri)
321
322 int event_dispatch ()
323
324 int event_loop (int flags = 0)
325
326 int event_loopexit (double after = 0)
327 CODE:
328 {
329 struct timeval tv;
330 tv_set (&tv, after);
331 event_loopexit (&tv);
332 }
333
334 Event event (SV *cb)
335 CODE:
336 RETVAL = e_new (NEWSV (0, 0), 0, cb);
337 OUTPUT:
338 RETVAL
339
340 Event io (SV *fh, short events, SV *cb)
341 ALIAS:
342 io_ns = 1
343 CODE:
344 RETVAL = e_new (fh, events, cb);
345 if (!ix) e_start (RETVAL);
346 OUTPUT:
347 RETVAL
348
349 Event timed_io (SV *fh, short events, double timeout, SV *cb)
350 ALIAS:
351 timed_io_ns = 1
352 CODE:
353 {
354 events = timeout ? events & ~EV_PERSIST : events | EV_PERSIST;
355
356 RETVAL = e_new (fh, events, cb);
357
358 if (timeout)
359 {
360 RETVAL->timeout = timeout;
361 RETVAL->interval = 1;
362 }
363
364 if (!ix) e_start (RETVAL);
365 }
366 OUTPUT:
367 RETVAL
368
369 Event timer (double after, int repeat, SV *cb)
370 ALIAS:
371 timer_ns = 1
372 CODE:
373 RETVAL = e_new (NEWSV (0, 0), 0, cb);
374 RETVAL->timeout = after;
375 RETVAL->interval = repeat;
376 if (!ix) e_start (RETVAL);
377 OUTPUT:
378 RETVAL
379
380 Event timer_abs (double at, double interval, SV *cb)
381 ALIAS:
382 timer_abs_ns = 1
383 CODE:
384 RETVAL = e_new (NEWSV (0, 0), 0, cb);
385 RETVAL->timeout = at;
386 RETVAL->interval = interval;
387 RETVAL->abstime = 1;
388 if (!ix) e_start (RETVAL);
389 OUTPUT:
390 RETVAL
391
392 Event signal (Signal signum, SV *cb)
393 ALIAS:
394 signal_ns = 1
395 CODE:
396 RETVAL = e_new (ST (0), EV_SIGNAL | EV_PERSIST, cb);
397 RETVAL->ev.ev_fd = signum;
398 if (!ix) e_start (RETVAL);
399 OUTPUT:
400 RETVAL
401
402 PROTOTYPES: DISABLE
403
404
405 MODULE = EV PACKAGE = EV::Base PREFIX = event_base_
406
407 Base new ()
408 CODE:
409 RETVAL = event_init ();
410 OUTPUT:
411 RETVAL
412
413 int event_base_dispatch (Base base)
414
415 int event_base_loop (Base base, int flags = 0)
416
417 int event_base_loopexit (Base base, double after)
418 CODE:
419 {
420 struct timeval tv;
421 tv.tv_sec = (long)after;
422 tv.tv_usec = (long)(after - tv.tv_sec) * 1e6;
423 event_base_loopexit (base, &tv);
424 }
425
426 int event_base_priority_init (Base base, int npri)
427
428 void event_base_set (Base base, Event ev)
429 C_ARGS: base, &ev->ev
430
431 void DESTROY (Base base)
432 CODE:
433 /*event_base_free (base);*/ /* causes too many problems */
434
435
436 MODULE = EV PACKAGE = EV::Event PREFIX = event_
437
438 int event_priority_set (Event ev, int pri)
439 C_ARGS: &ev->ev, pri
440
441 int event_add (Event ev, double timeout = TIMEOUT_NONE)
442 CODE:
443 ev->timeout = timeout;
444 ev->abstime = 0;
445 RETVAL = e_start (ev);
446 OUTPUT:
447 RETVAL
448
449 int event_start (Event ev)
450 CODE:
451 RETVAL = e_start (ev);
452 OUTPUT:
453 RETVAL
454
455 int event_del (Event ev)
456 ALIAS:
457 stop = 0
458 CODE:
459 RETVAL = e_stop (ev);
460 OUTPUT:
461 RETVAL
462
463 void DESTROY (Event ev)
464 CODE:
465 e_stop (ev);
466 SvREFCNT_dec (ev->cb);
467 SvREFCNT_dec (ev->fh);
468
469 SV *cb (Event ev, SV *new_cb = 0)
470 CODE:
471 RETVAL = newSVsv (ev->cb);
472 if (items > 1)
473 sv_setsv (ev->cb, new_cb);
474 OUTPUT:
475 RETVAL
476
477 SV *fh (Event ev, SV *new_fh = 0)
478 CODE:
479 RETVAL = newSVsv (ev->fh);
480 if (items > 1)
481 {
482 if (ev->active) event_del (&ev->ev);
483 sv_setsv (ev->fh, new_fh);
484 ev->ev.ev_fd = sv_fileno (ev->fh);
485 ev->ev.ev_events &= ev->ev.ev_events & ~EV_SIGNAL;
486 if (ev->active) event_add (&ev->ev, e_tv (ev));
487 }
488 OUTPUT:
489 RETVAL
490
491 SV *signal (Event ev, SV *new_signal = 0)
492 CODE:
493 {
494 Signal signum;
495
496 if (items > 1)
497 signum = sv_signum (new_signal); /* may croak here */
498
499 RETVAL = newSVsv (ev->fh);
500
501 if (items > 1)
502 {
503 if (ev->active) event_del (&ev->ev);
504 sv_setsv (ev->fh, new_signal);
505 ev->ev.ev_fd = signum;
506 ev->ev.ev_events |= EV_SIGNAL;
507 if (ev->active) event_add (&ev->ev, e_tv (ev));
508 }
509 }
510 OUTPUT:
511 RETVAL
512
513 short events (Event ev, short new_events = EV_UNDEF)
514 CODE:
515 RETVAL = ev->ev.ev_events;
516 if (items > 1)
517 {
518 if (ev->active) event_del (&ev->ev);
519 ev->ev.ev_events = new_events;
520 if (ev->active) event_add (&ev->ev, e_tv (ev));
521 }
522 OUTPUT:
523 RETVAL
524
525 double timeout (Event ev, double new_timeout = 0., int repeat = 0)
526 CODE:
527 RETVAL = ev->timeout;
528 if (items > 1)
529 {
530 if (ev->active) event_del (&ev->ev);
531 ev->timeout = new_timeout;
532 ev->interval = repeat;
533 ev->abstime = 0;
534 if (ev->active) event_add (&ev->ev, e_tv (ev));
535 }
536 OUTPUT:
537 RETVAL
538
539 void timeout_abs (Event ev, double at, double interval = 0.)
540 CODE:
541 if (ev->active) event_del (&ev->ev);
542 ev->timeout = at;
543 ev->interval = interval;
544 ev->abstime = 1;
545 if (ev->active) event_add (&ev->ev, e_tv (ev));
546
547
548 MODULE = EV PACKAGE = EV::DNS PREFIX = evdns_
549
550 BOOT:
551 {
552 HV *stash = gv_stashpv ("EV::DNS", 1);
553
554 static const struct {
555 const char *name;
556 IV iv;
557 } *civ, const_iv[] = {
558 # define const_iv(pfx, name) { # name, (IV) pfx ## name },
559 const_iv (DNS_, ERR_NONE)
560 const_iv (DNS_, ERR_FORMAT)
561 const_iv (DNS_, ERR_SERVERFAILED)
562 const_iv (DNS_, ERR_NOTEXIST)
563 const_iv (DNS_, ERR_NOTIMPL)
564 const_iv (DNS_, ERR_REFUSED)
565 const_iv (DNS_, ERR_TRUNCATED)
566 const_iv (DNS_, ERR_UNKNOWN)
567 const_iv (DNS_, ERR_TIMEOUT)
568 const_iv (DNS_, ERR_SHUTDOWN)
569 const_iv (DNS_, IPv4_A)
570 const_iv (DNS_, PTR)
571 const_iv (DNS_, IPv6_AAAA)
572 const_iv (DNS_, QUERY_NO_SEARCH)
573 const_iv (DNS_, OPTION_SEARCH)
574 const_iv (DNS_, OPTION_NAMESERVERS)
575 const_iv (DNS_, OPTION_MISC)
576 const_iv (DNS_, OPTIONS_ALL)
577 const_iv (DNS_, NO_SEARCH)
578 };
579
580 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
581 newCONSTSUB (stash, (char *)civ->name, newSViv (civ->iv));
582 }
583
584 int evdns_init ()
585
586 void evdns_shutdown (int fail_requests = 1)
587
588 const char *evdns_err_to_string (int err)
589
590 int evdns_nameserver_add (U32 address)
591
592 int evdns_count_nameservers ()
593
594 int evdns_clear_nameservers_and_suspend ()
595
596 int evdns_resume ()
597
598 int evdns_nameserver_ip_add (char *ip_as_string)
599
600 int evdns_resolve_ipv4 (const char *name, int flags, SV *cb)
601 C_ARGS: name, flags, dns_cb, (void *)SvREFCNT_inc (cb)
602
603 int evdns_resolve_ipv6 (const char *name, int flags, SV *cb)
604 C_ARGS: name, flags, dns_cb, (void *)SvREFCNT_inc (cb)
605
606 int evdns_resolve_reverse (SV *addr, int flags, SV *cb)
607 ALIAS:
608 evdns_resolve_reverse_ipv6 = 1
609 CODE:
610 {
611 STRLEN len;
612 char *data = SvPVbyte (addr, len);
613 if (len != (ix ? 16 : 4))
614 croak ("ipv4/ipv6 address to be resolved must be given as 4/16 byte octet string");
615
616 RETVAL = ix
617 ? evdns_resolve_reverse_ipv6 ((struct in6_addr *)data, flags, dns_cb, (void *)SvREFCNT_inc (cb))
618 : evdns_resolve_reverse ((struct in_addr *)data, flags, dns_cb, (void *)SvREFCNT_inc (cb));
619 }
620 OUTPUT:
621 RETVAL
622
623 int evdns_set_option (char *option, char *val, int flags)
624
625 int evdns_resolv_conf_parse (int flags, const char *filename)
626
627 #ifdef MS_WINDOWS
628
629 int evdns_config_windows_nameservers ()
630
631 #endif
632
633 void evdns_search_clear ()
634
635 void evdns_search_add (char *domain)
636
637 void evdns_search_ndots_set (int ndots)
638
639
640 MODULE = EV PACKAGE = EV::HTTP PREFIX = evhttp_
641
642 BOOT:
643 {
644 HV *stash = gv_stashpv ("EV::HTTP", 1);
645
646 static const struct {
647 const char *name;
648 IV iv;
649 } *civ, const_iv[] = {
650 # define const_iv(pfx, name) { # name, (IV) pfx ## name },
651 const_iv (HTTP_, OK)
652 const_iv (HTTP_, NOCONTENT)
653 const_iv (HTTP_, MOVEPERM)
654 const_iv (HTTP_, MOVETEMP)
655 const_iv (HTTP_, NOTMODIFIED)
656 const_iv (HTTP_, BADREQUEST)
657 const_iv (HTTP_, NOTFOUND)
658 const_iv (HTTP_, SERVUNAVAIL)
659 const_iv (EVHTTP_, REQ_OWN_CONNECTION)
660 const_iv (EVHTTP_, PROXY_REQUEST)
661 const_iv (EVHTTP_, REQ_GET)
662 const_iv (EVHTTP_, REQ_POST)
663 const_iv (EVHTTP_, REQ_HEAD)
664 const_iv (EVHTTP_, REQUEST)
665 const_iv (EVHTTP_, RESPONSE)
666 };
667
668 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
669 newCONSTSUB (stash, (char *)civ->name, newSViv (civ->iv));
670 }
671
672 MODULE = EV PACKAGE = EV::HTTP::Request PREFIX = evhttp_request_
673
674 #HttpRequest new (SV *klass, SV *cb)
675
676 #void DESTROY (struct evhttp_request *req);
677
678
679
680
681
682
683
684