EV-ADNS/ADNS.xs

#include "EXTERN.h"
#include "perl.h"
#include "XSUB.h"

#include <poll.h>
#include <adns.h>

#include "EVAPI.h"

static HV *stash;
static adns_state ads;

struct ctx
{
  SV *self;
  adns_query query;
  SV *cb;
};

static void
process ()
{
  dSP;

  for (;;)
    {
      adns_query q;
      adns_answer *a;
      void *ctx;
      SV *cb;
      struct ctx *c;
      int r = adns_check (ads, &q, &a, &ctx);
      
      if (r)
        break;

      c = (struct ctx *)ctx;
      cb = c->cb;
      c->cb = 0;
      ev_unref ();

      PUSHMARK (SP);
      call_sv (cb, G_VOID | G_DISCARD | G_EVAL);

      SvREFCNT_dec (cb);
    }
}

static struct pollfd *fds;
static int nfd;
static ev_io *iow;
static ev_timer tw;
static ev_prepare prepare_ev;
static struct timeval tv_now;

static void
update_now (EV_P)
{
  ev_tstamp t = ev_now ();

  tv_now.tv_sec  = (long)t;
  tv_now.tv_usec = (long)((t - (ev_tstamp)tv_now.tv_sec) * 1e-6);
}

static void
timer_cb (EV_P_ ev_timer *w, int revents)
{
}

static void
io_cb (EV_P_ ev_io *w, int revents)
{
  update_now (EV_A);

  if (revents & EV_READ ) adns_processreadable  (ads, w->fd, &tv_now);
  if (revents & EV_WRITE) adns_processwriteable (ads, w->fd, &tv_now);
}

// create io watchers for each fd and a timer before blocking
static void
prepare_cb (EV_P_ ev_prepare *w, int revents)
{
  int i;
  int timeout = 3600000;

  ev_timer_stop (EV_A_ &tw);

  for (i = 0; i < nfd; ++i)
    ev_io_stop (EV_A_ iow + i);

  process ();

  update_now (EV_A);

  while (adns_beforepoll (ads, fds, &nfd, &timeout, &tv_now))
    {
      free (iow); iow = malloc (nfd * sizeof (struct pollfd));
      free (fds); fds = malloc (nfd * sizeof (ev_io));
    }

  ev_timer_set (&tw, timeout * 1e-3, 0.);
  ev_timer_start (EV_A_ &tw);

  // create on ev_io per pollfd
  for (i = 0; i < nfd; ++i)
    {
      ev_io_init (iow + i, io_cb, fds [i].fd,
        ((fds [i].events & POLLIN ? EV_READ : 0)
         | (fds [i].events & POLLOUT ? EV_WRITE : 0)));

      ev_io_start (EV_A_ iow + i);
    }
}

MODULE = EV::ADNS                PACKAGE = EV::ADNS

PROTOTYPES: ENABLE

BOOT:
{
  stash = gv_stashpv ("EV::ADNS", 1);

  static const struct {
    const char *name;
    IV iv;
  } *civ, const_iv[] = {
#   define const_iv(name) { # name, (IV) adns_ ## name },
    const_iv (if_none)
    const_iv (if_noenv)
    const_iv (if_noerrprint)
    const_iv (if_noserverwarn)
    const_iv (if_debug)
    const_iv (if_logpid)
    const_iv (if_noautosys)
    const_iv (if_eintr)
    const_iv (if_nosigpipe)
    const_iv (if_checkc_entex)
    const_iv (if_checkc_freq)

    const_iv (qf_none)
    const_iv (qf_search)
    const_iv (qf_usevc)
    const_iv (qf_owner)
    const_iv (qf_quoteok_query)
    const_iv (qf_quoteok_cname)
    const_iv (qf_quoteok_anshost)
    const_iv (qf_quotefail_cname)
    const_iv (qf_cname_loose)
    const_iv (qf_cname_forbid)

    const_iv (rrt_typemask)
    const_iv (_qtf_deref)
    const_iv (_qtf_mail822)
    const_iv (r_unknown)
    const_iv (r_none)
    const_iv (r_a)
    const_iv (r_ns_raw)
    const_iv (r_ns)
    const_iv (r_cname)
    const_iv (r_soa_raw)
    const_iv (r_soa)
    const_iv (r_ptr_raw)
    const_iv (r_ptr)
    const_iv (r_hinfo)
    const_iv (r_mx_raw)
    const_iv (r_mx)
    const_iv (r_txt)
    const_iv (r_rp_raw)
    const_iv (r_rp)
    const_iv (r_srv_raw)
    const_iv (r_srv)
    const_iv (r_addr)

    const_iv (s_ok)
    const_iv (s_nomemory)
    const_iv (s_unknownrrtype)
    const_iv (s_systemfail)
    const_iv (s_max_localfail)
    const_iv (s_timeout)
    const_iv (s_allservfail)
    const_iv (s_norecurse)
    const_iv (s_invalidresponse)
    const_iv (s_unknownformat)
    const_iv (s_max_remotefail)
    const_iv (s_rcodeservfail)
    const_iv (s_rcodeformaterror)
    const_iv (s_rcodenotimplemented)
    const_iv (s_rcoderefused)
    const_iv (s_rcodeunknown)
    const_iv (s_max_tempfail)
    const_iv (s_inconsistent)
    const_iv (s_prohibitedcname)
    const_iv (s_answerdomaininvalid)
    const_iv (s_answerdomaintoolong)
    const_iv (s_invaliddata)
    const_iv (s_max_misconfig)
    const_iv (s_querydomainwrong)
    const_iv (s_querydomaininvalid)
    const_iv (s_querydomaintoolong)
    const_iv (s_max_misquery)
    const_iv (s_nxdomain)
    const_iv (s_nodata)
    const_iv (s_max_permfail)
  };

  for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
    newCONSTSUB (stash, (char *)civ->name, newSViv (civ->iv));

  I_EV_API ("EV::ADNS");

  ev_prepare_init (&prepare_ev, prepare_cb); ev_prepare_start (EV_DEFAULT_ &prepare_ev);
  ev_unref ();

  ev_init (&tw, timer_cb);

  adns_init (&ads, adns_if_noenv | adns_if_noerrprint | adns_if_noserverwarn | adns_if_noautosys, 0);
}

void submit (char *owner, int type, int flags, SV *cb)
        PPCODE:
{
        SV *csv = NEWSV (0, sizeof (struct ctx));
        struct ctx *c = (struct ctx *)SvPVX (csv);
        int r = adns_submit (ads, owner, type, flags, (void *)c, &c->query);

        if (r)
          {
            printf ("errn %d\n", r);//D
            SvREFCNT_dec (csv);
            XSRETURN_EMPTY;
          }
        else
          {
            ev_ref ();
            SvPOK_only (csv);
            SvCUR_set (csv, sizeof (struct ctx));
            c->self = csv;
            c->cb   = newSVsv (cb);

            if (GIMME_V != G_VOID)
              {
                csv = sv_2mortal (newRV_inc (csv));
                sv_bless (csv, stash);
                XPUSHs (csv);
              }
          }
}

void DESTROY (SV *req)
        CODE:
{
        struct ctx *c;

        if (!(SvROK (req) && SvOBJECT (SvRV (req))
              && (SvSTASH (SvRV (req)) == stash)))
          croak ("object is not of type EV::ADNS");
        
        c = (struct ctx *)SvPVX (SvRV (req));

        if (c->cb)
          {
            ev_unref ();
            adns_cancel (c->query);
            SvREFCNT_dec (c->cb);
          }

        SvREFCNT_dec (c->self);
}


Revision:	1.3
Committed:	Sat Dec 1 14:37:46 2007 UTC (16 years, 7 months ago) by root
Branch:	MAIN
Changes since 1.2:	+21 -6 lines
Log Message:	* empty log message *
#	User	Rev	Content
1	root	1.1	#include "EXTERN.h"
2			#include "perl.h"
3			#include "XSUB.h"
4
5			#include <poll.h>
6			#include <adns.h>
7
8			#include "EVAPI.h"
9
10	root	1.2	static HV *stash;
11	root	1.1	static adns_state ads;
12
13			struct ctx
14			{
15	root	1.2	SV *self;
16			adns_query query;
17	root	1.1	SV *cb;
18			};
19
20			static void
21			process ()
22			{
23	root	1.3	dSP;
24
25	root	1.1	for (;;)
26			{
27			adns_query q;
28			adns_answer *a;
29	root	1.3	void *ctx;
30			SV *cb;
31			struct ctx *c;
32			int r = adns_check (ads, &q, &a, &ctx);
33	root	1.1
34			if (r)
35			break;
36	root	1.3
37			c = (struct ctx *)ctx;
38			cb = c->cb;
39			c->cb = 0;
40			ev_unref ();
41
42			PUSHMARK (SP);
43			call_sv (cb, G_VOID \| G_DISCARD \| G_EVAL);
44
45			SvREFCNT_dec (cb);
46	root	1.1	}
47			}
48
49			static struct pollfd *fds;
50			static int nfd;
51			static ev_io *iow;
52			static ev_timer tw;
53			static ev_prepare prepare_ev;
54	root	1.2	static struct timeval tv_now;
55	root	1.1
56			static void
57			update_now (EV_P)
58			{
59	root	1.2	ev_tstamp t = ev_now ();
60	root	1.1
61	root	1.2	tv_now.tv_sec = (long)t;
62			tv_now.tv_usec = (long)((t - (ev_tstamp)tv_now.tv_sec) * 1e-6);
63	root	1.1	}
64
65			static void
66			timer_cb (EV_P_ ev_timer *w, int revents)
67			{
68			}
69
70			static void
71			io_cb (EV_P_ ev_io *w, int revents)
72			{
73			update_now (EV_A);
74
75			if (revents & EV_READ ) adns_processreadable (ads, w->fd, &tv_now);
76			if (revents & EV_WRITE) adns_processwriteable (ads, w->fd, &tv_now);
77			}
78
79			// create io watchers for each fd and a timer before blocking
80			static void
81			prepare_cb (EV_P_ ev_prepare *w, int revents)
82			{
83			int i;
84			int timeout = 3600000;
85
86			ev_timer_stop (EV_A_ &tw);
87
88			for (i = 0; i < nfd; ++i)
89			ev_io_stop (EV_A_ iow + i);
90
91			process ();
92
93			update_now (EV_A);
94
95			while (adns_beforepoll (ads, fds, &nfd, &timeout, &tv_now))
96			{
97			free (iow); iow = malloc (nfd * sizeof (struct pollfd));
98			free (fds); fds = malloc (nfd * sizeof (ev_io));
99			}
100
101			ev_timer_set (&tw, timeout * 1e-3, 0.);
102			ev_timer_start (EV_A_ &tw);
103
104			// create on ev_io per pollfd
105			for (i = 0; i < nfd; ++i)
106			{
107			ev_io_init (iow + i, io_cb, fds [i].fd,
108			((fds [i].events & POLLIN ? EV_READ : 0)
109			\| (fds [i].events & POLLOUT ? EV_WRITE : 0)));
110
111			ev_io_start (EV_A_ iow + i);
112			}
113			}
114
115			MODULE = EV::ADNS PACKAGE = EV::ADNS
116
117			PROTOTYPES: ENABLE
118
119			BOOT:
120			{
121	root	1.2	stash = gv_stashpv ("EV::ADNS", 1);
122	root	1.1
123			static const struct {
124			const char *name;
125			IV iv;
126			} *civ, const_iv[] = {
127	root	1.3	# define const_iv(name) { # name, (IV) adns_ ## name },
128	root	1.1	const_iv (if_none)
129			const_iv (if_noenv)
130			const_iv (if_noerrprint)
131			const_iv (if_noserverwarn)
132			const_iv (if_debug)
133			const_iv (if_logpid)
134			const_iv (if_noautosys)
135			const_iv (if_eintr)
136			const_iv (if_nosigpipe)
137			const_iv (if_checkc_entex)
138			const_iv (if_checkc_freq)
139
140			const_iv (qf_none)
141			const_iv (qf_search)
142			const_iv (qf_usevc)
143			const_iv (qf_owner)
144			const_iv (qf_quoteok_query)
145			const_iv (qf_quoteok_cname)
146			const_iv (qf_quoteok_anshost)
147			const_iv (qf_quotefail_cname)
148			const_iv (qf_cname_loose)
149			const_iv (qf_cname_forbid)
150
151			const_iv (rrt_typemask)
152			const_iv (_qtf_deref)
153			const_iv (_qtf_mail822)
154			const_iv (r_unknown)
155			const_iv (r_none)
156			const_iv (r_a)
157			const_iv (r_ns_raw)
158			const_iv (r_ns)
159			const_iv (r_cname)
160			const_iv (r_soa_raw)
161			const_iv (r_soa)
162			const_iv (r_ptr_raw)
163			const_iv (r_ptr)
164			const_iv (r_hinfo)
165			const_iv (r_mx_raw)
166			const_iv (r_mx)
167			const_iv (r_txt)
168			const_iv (r_rp_raw)
169			const_iv (r_rp)
170			const_iv (r_srv_raw)
171			const_iv (r_srv)
172			const_iv (r_addr)
173
174			const_iv (s_ok)
175			const_iv (s_nomemory)
176			const_iv (s_unknownrrtype)
177			const_iv (s_systemfail)
178			const_iv (s_max_localfail)
179			const_iv (s_timeout)
180			const_iv (s_allservfail)
181			const_iv (s_norecurse)
182			const_iv (s_invalidresponse)
183			const_iv (s_unknownformat)
184			const_iv (s_max_remotefail)
185			const_iv (s_rcodeservfail)
186			const_iv (s_rcodeformaterror)
187			const_iv (s_rcodenotimplemented)
188			const_iv (s_rcoderefused)
189			const_iv (s_rcodeunknown)
190			const_iv (s_max_tempfail)
191			const_iv (s_inconsistent)
192			const_iv (s_prohibitedcname)
193			const_iv (s_answerdomaininvalid)
194			const_iv (s_answerdomaintoolong)
195			const_iv (s_invaliddata)
196			const_iv (s_max_misconfig)
197			const_iv (s_querydomainwrong)
198			const_iv (s_querydomaininvalid)
199			const_iv (s_querydomaintoolong)
200			const_iv (s_max_misquery)
201			const_iv (s_nxdomain)
202			const_iv (s_nodata)
203			const_iv (s_max_permfail)
204			};
205
206			for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
207			newCONSTSUB (stash, (char *)civ->name, newSViv (civ->iv));
208
209			I_EV_API ("EV::ADNS");
210
211			ev_prepare_init (&prepare_ev, prepare_cb); ev_prepare_start (EV_DEFAULT_ &prepare_ev);
212			ev_unref ();
213
214			ev_init (&tw, timer_cb);
215
216			adns_init (&ads, adns_if_noenv \| adns_if_noerrprint \| adns_if_noserverwarn \| adns_if_noautosys, 0);
217			}
218
219	root	1.3	void submit (char owner, int type, int flags, SV cb)
220	root	1.2	PPCODE:
221	root	1.1	{
222	root	1.2	SV *csv = NEWSV (0, sizeof (struct ctx));
223			struct ctx c = (struct ctx )SvPVX (csv);
224			int r = adns_submit (ads, owner, type, flags, (void *)c, &c->query);
225	root	1.1
226			if (r)
227			{
228	root	1.3	printf ("errn %d\n", r);//D
229	root	1.2	SvREFCNT_dec (csv);
230	root	1.1	XSRETURN_EMPTY;
231			}
232	root	1.2	else
233			{
234	root	1.3	ev_ref ();
235	root	1.2	SvPOK_only (csv);
236			SvCUR_set (csv, sizeof (struct ctx));
237			c->self = csv;
238			c->cb = newSVsv (cb);
239
240			if (GIMME_V != G_VOID)
241			{
242			csv = sv_2mortal (newRV_inc (csv));
243			sv_bless (csv, stash);
244			XPUSHs (csv);
245			}
246			}
247	root	1.1	}
248
249	root	1.2	void DESTROY (SV *req)
250			CODE:
251			{
252			struct ctx *c;
253
254			if (!(SvROK (req) && SvOBJECT (SvRV (req))
255			&& (SvSTASH (SvRV (req)) == stash)))
256			croak ("object is not of type EV::ADNS");
257
258			c = (struct ctx *)SvPVX (SvRV (req));
259
260			if (c->cb)
261			{
262	root	1.3	ev_unref ();
263	root	1.2	adns_cancel (c->query);
264			SvREFCNT_dec (c->cb);
265			}
266
267			SvREFCNT_dec (c->self);
268			}
269
270
271	root	1.1
272