[ViewVC] Diff of: cvs/AnyEvent-FastPing/FastPing.xs

Comparing AnyEvent-FastPing/FastPing.xs (file contents):
Revision 1.8 by root, Sat Jan 29 23:36:49 2011 UTC vs.
Revision 1.11 by root, Tue Feb 1 04:06:24 2011 UTC

…		…
8	#include "perl.h"	8	#include "perl.h"
9	#include "XSUB.h"	9	#include "XSUB.h"
10		10
11	#include <pthread.h>	11	#include <pthread.h>
12		12
13	#include <math.h>
14	#include <stdio.h>	13	#include <stdio.h>
15	#include <stdlib.h>	14	#include <stdlib.h>
16	#include <string.h>	15	#include <string.h>
17		16
18	#include <time.h>	17	#include <time.h>
…		…
39	#define ICMP4_ECHO 8	38	#define ICMP4_ECHO 8
40	#define ICMP4_ECHO_REPLY 0	39	#define ICMP4_ECHO_REPLY 0
41	#define ICMP6_ECHO 128	40	#define ICMP6_ECHO 128
42	#define ICMP6_ECHO_REPLY 129	41	#define ICMP6_ECHO_REPLY 129
43		42
44	#define DRAIN_INTERVAL .000001 // how long to wait when sendto returns ENOBUFS, in seconds	43	#define DRAIN_INTERVAL 1e-6 // how long to wait when sendto returns ENOBUFS, in seconds
45	#define MIN_INTERVAL .000001 // minimum packet send interval, in seconds	44	#define MIN_INTERVAL 1e-6 // minimum packet send interval, in seconds
46		45
47	#define HDR_SIZE_IP4 20	46	#define HDR_SIZE_IP4 20
48	#define HDR_SIZE_IP6 48	47	#define HDR_SIZE_IP6 48
49		48
50	//TODO: xread/xwrite for atomicity? we currently rely on the fact that the pip buffersize divides exactly by pointer sizes	49	static int thr_res[2]; // worker thread finished status
		50	static int icmp4_fd = -1;
		51	static int icmp6_fd = -1;
51		52
52	typedef uint8_t addr_tt[16];	53	/*****************************************************************************/
53		54
54	typedef double tstamp;	55	typedef double tstamp;
55		56
56	static tstamp	57	static tstamp
57	NOW (void)	58	NOW (void)
58	{	59	{
59	struct timeval tv;	60	struct timeval tv;
		61
60	gettimeofday (&tv, 0);	62	gettimeofday (&tv, 0);
		63
61	return tv.tv_sec + tv.tv_usec * 0.000001;	64	return tv.tv_sec + tv.tv_usec * 1e-6;
62	}	65	}
63		66
64	typedef struct	67	static void
		68	ssleep (tstamp wait)
65	{	69	{
66	int family;	70	#if defined (__SVR4) && defined (__sun)
67	addr_tt lo, hi;	71	struct timeval tv;
68	double interval;
69	tstamp next;
70	} RANGE;
71		72
72	typedef struct	73	tv.tv_sec = wait;
73	{	74	tv.tv_usec = (wait - tv.tv_sec) * 1e6;
74	SV *id;	75
75	double interval;	76	select (0, 0, 0, 0, &tv);
76	int nranges;	77	#elif defined(_WIN32)
77	RANGE *ranges;	78	Sleep ((unsigned long)(delay * 1e3));
78	uint32_t payload;	79	#else
79	} REQ;	80	struct timespec ts;
		81
		82	ts.tv_sec = wait;
		83	ts.tv_nsec = (wait - ts.tv_sec) * 1e9;
		84
		85	nanosleep (&ts, 0);
		86	#endif
		87	}
		88
		89	/*****************************************************************************/
80		90
81	typedef struct	91	typedef struct
82	{	92	{
83	uint8_t version_ihl;	93	uint8_t version_ihl;
84	uint8_t tos;	94	uint8_t tos;
…		…
93		103
94	uint32_t src;	104	uint32_t src;
95	uint32_t dst;	105	uint32_t dst;
96	} IP4HDR;	106	} IP4HDR;
97		107
		108	/*****************************************************************************/
		109
		110	typedef uint8_t addr_tt[16];
		111
98	typedef struct	112	typedef struct
99	{	113	{
100	uint8_t version;	114	tstamp next;
101	uint8_t x1, x2, x3;	115	double interval;
		116	int addrlen;
102		117
103	uint16_t payload_len;	118	addr_tt lo, hi; /* only if !addrcnt */
104	uint8_t nxt_hdr;
105	uint8_t hop_limit;
106		119
107	uint8_t src[16];	120	int addrcnt;
108	uint8_t dst[16];	121	/* addrcnt addresses follow */
109	} IP6HDR;	122	} RANGE;
110		123
111	#define MAGIC 0xca4c	124	typedef struct
		125	{
		126	RANGE **ranges;
		127	int rangecnt, rangemax;
112		128
		129	tstamp interval;
		130	tstamp maxrtt;
113	static uint16_t magic;	131	uint16_t magic1;
		132	uint16_t magic2;
		133	uint16_t magic3;
		134
		135	int id;
		136
		137	AV recvq; / receive queue */
		138	int nextrecv;
		139	SV *recvcb;
		140
		141	pthread_t thrid;
		142	int running;
		143	} PINGER;
		144
		145	static PINGER **pingers;
		146	static int pingerfree; / freelist next */
		147	static int pingercnt;
		148	static int pingermax;
		149	static int firstfree = -1;
		150	static int firstrecv = -1;
		151
		152	/*****************************************************************************/
114		153
115	typedef struct	154	typedef struct
116	{	155	{
117	uint8_t type, code;	156	uint8_t type, code;
118	uint16_t cksum;	157	uint16_t cksum;
		158
119	uint16_t id, seq;	159	uint16_t id, seq;
		160
		161	uint16_t pinger;
		162	uint16_t magic;
		163
		164	uint32_t stamp_hi;
120	uint32_t payload;	165	uint32_t stamp_lo;
121	tstamp stamp; // be careful when accessing this
122	} PKT;	166	} PKT;
123		167
124	static pthread_t pthrid;
125	static int thr_send[2]; // send to worker
126	static int thr_recv[2]; // receive from worker
127
128	static int icmp4_fd, icmp6_fd;
129
130	static AV *cbs;
131
132	static uint16_t	168	static int
133	icmp_cksum (void *data, unsigned int len)	169	pkt_is_valid_for (PKT pkt, PINGER pinger)
134	{	170	{
135	register int sum = 0;	171	return pkt->id == pinger->magic1
136	uint16_t *wp;	172	&& pkt->seq == pinger->magic2
		173	&& pkt->magic == pinger->magic3;
		174	}
137		175
138	assert (~len & 1);	176	static void
		177	ts_to_pkt (PKT *pkt, tstamp ts)
		178	{
		179	/* move 12 bits of seconds into the 32 bit fractional part */
		180	/* leaving 20 bits subsecond resolution and 44 bits of integers */
		181	/* (of which 32 are typically usable) */
		182	ts *= 1. / 4096.;
139		183
140	for (wp = (uint16_t *)data; len; wp++, len -= 2)	184	pkt->stamp_hi = ts;
141	sum += *wp;	185	pkt->stamp_lo = (ts - pkt->stamp_hi) * 4294967296.;
		186	}
		187
		188	static tstamp
		189	pkt_to_ts (PKT *pkt)
		190	{
		191	return pkt->stamp_hi * 4096.
		192	+ pkt->stamp_lo * (4096. / 4294967296.);
		193	}
		194
		195	static void
		196	pkt_cksum (PKT *pkt)
		197	{
		198	uint_fast32_t sum = -pkt->cksum;
		199	uint32_t wp = (uint32_t )pkt;
		200	int len = sizeof (*pkt) / 4;
		201
		202	do
		203	{
		204	uint_fast32_t w = (volatile uint32_t )wp++;
		205	sum += (w & 0xffff) + (w >> 16);
		206	}
		207	while (len--);
142		208
143	sum = (sum >> 16) + (sum & 0xffff); /* add high 16 to low 16 */	209	sum = (sum >> 16) + (sum & 0xffff); /* add high 16 to low 16 */
144	sum += sum >> 16; /* add carry */	210	sum += sum >> 16; /* add carry */
145		211
146	return ~sum;	212	pkt->cksum = ~sum;
147	}	213	}
148		214
		215	/*****************************************************************************/
		216
		217	static void
		218	range_free (RANGE *self)
		219	{
		220	free (self);
		221	}
		222
		223	/* like sendto, but retries on failure */
		224	static void
		225	xsendto (int fd, void buf, size_t len, int flags, void sa, int salen)
		226	{
		227	tstamp wait = DRAIN_INTERVAL / 2.;
		228
		229	while (sendto (fd, buf, len, flags, sa, salen) < 0 && errno == ENOBUFS)
		230	ssleep (wait *= 2.);
		231	}
		232
		233	// ping current address, return true and increment if more to ping
149	static void	234	static int
150	inc_addr (addr_tt *addr)	235	range_send_ping (RANGE self, PKT pkt)
151	{	236	{
		237	// send ping
		238	uint8_t *addr;
		239
		240	if (self->addrcnt)
		241	addr = (self->addrcnt - 1) * self->addrlen + (uint8_t *)(self + 1);
		242	else
		243	addr = sizeof (addr_tt) - self->addrlen + self->lo;
		244
		245	pkt->cksum = 0;
		246
		247	if (self->addrlen == 4)
		248	{
		249	struct sockaddr_in sa;
		250
		251	pkt->type = ICMP4_ECHO;
		252	pkt_cksum (pkt);
		253
		254	sa.sin_family = AF_INET;
		255	sa.sin_port = 0;
		256
		257	memcpy (&sa.sin_addr, addr, sizeof (sa.sin_addr));
		258
		259	xsendto (icmp4_fd, pkt, sizeof (*pkt), 0, &sa, sizeof (sa));
		260	}
		261	else
		262	{
		263	#if ENABLE_IPV6
		264	struct sockaddr_in6 sa;
		265
		266	pkt->type = ICMP6_ECHO;
		267
		268	sa.sin6_family = AF_INET6;
		269	sa.sin6_port = 0;
		270	sa.sin6_flowinfo = 0;
		271	sa.sin6_scope_id = 0;
		272
		273	memcpy (&sa.sin6_addr, addr, sizeof (sa.sin6_addr));
		274
		275	xsendto (icmp6_fd, pkt, sizeof (*pkt), 0, &sa, sizeof (sa));
		276	#endif
		277	}
		278
		279	// see if we have any more addresses
		280	if (self->addrcnt)
		281	{
		282	if (!--self->addrcnt)
		283	return 0;
		284	}
		285	else
		286	{
		287	if (!memcmp (&self->lo, &self->hi, sizeof (addr_tt)))
		288	return 0;
		289
		290	// increment self->lo
		291	{
152	int len = sizeof (addr_tt) - 1;	292	int len = sizeof (addr_tt) - 1;
		293
		294	while (!++self->lo [len])
		295	--len;
		296	}
		297	}
		298
		299	return 1;
		300	}
		301
		302	/*****************************************************************************/
		303
		304	static void
		305	downheap (PINGER *self)
		306	{
		307	RANGE elem = self->ranges [0]; / always exists */
		308	int Nm1 = self->rangecnt - 1;
		309	int j;
		310	int k;
		311
		312	for (k = 0; ; )
		313	{
		314	int j = k * 2 + 1;
		315
		316	if (j > Nm1)
		317	break;
		318
		319	if (j < Nm1
		320	&& self->ranges [j]->next > self->ranges [j + 1]->next)
		321	++j;
		322
		323	if (self->ranges [j]->next >= elem->next)
		324	break;
		325
		326	self->ranges [k] = self->ranges [j];
		327
		328	k = j;
		329	}
		330
		331	self->ranges [k] = elem;
		332	}
		333
		334	static void
		335	upheap (PINGER *self, int k)
		336	{
		337	RANGE *elem = self->ranges [k];
		338
		339	while (k)
		340	{
		341	int j = (k - 1) >> 1;
		342
		343	if (self->ranges [j]->next <= elem->next)
		344	break;
		345
		346	self->ranges [k] = self->ranges [j];
		347
		348	k = j;
		349	}
		350
		351	self->ranges [k] = elem;
		352	}
		353
		354	static void *
		355	ping_proc (void *self_)
		356	{
		357	PINGER self = (PINGER )self_;
		358	PKT pkt;
		359
		360	memset (&pkt, 0, sizeof (pkt));
		361
		362	tstamp now = NOW ();
		363	tstamp next = now;
		364
		365	pkt.code = 0;
		366	pkt.id = self->magic1;
		367	pkt.seq = self->magic2;
		368	pkt.magic = self->magic3;
		369	pkt.pinger = self->id;
		370
		371	while (self->rangecnt)
		372	{
		373	RANGE *range = self->ranges [0];
		374	int n, k;
		375
		376	// ranges [0] is always the next range to ping
		377	tstamp wait = range->next - now;
		378
		379	// compare with the global frequency limit
		380	{
		381	tstamp diff = next - now;
		382
		383	if (wait < diff)
		384	wait = diff;
		385	else if (range)
		386	next = range->next;
		387	}
		388
		389	if (wait > 0.)
		390	ssleep (wait);
		391
		392	now = NOW ();
		393
		394	ts_to_pkt (&pkt, now);
		395
		396	if (!range_send_ping (range, &pkt))
		397	{
		398	self->ranges [0] = self->ranges [--self->rangecnt];
		399	range_free (range);
		400	}
		401	else
		402	{
		403	range->next = next;
		404	range->next += range->interval;
		405	}
		406
		407	downheap (self);
		408
		409	next += self->interval;
		410	}
		411
		412	ssleep (self->maxrtt);
		413
		414	{
		415	uint16_t id = self->id;
		416
		417	write (thr_res [1], &id, sizeof (id));
		418	}
		419
		420	return 0;
		421	}
		422
		423	/*****************************************************************************/
		424
		425	static void
		426	pinger_start (PINGER *self)
		427	{
		428	sigset_t fullsigset, oldsigset;
		429	pthread_attr_t attr;
		430
		431	if (self->running)
		432	return;
		433
		434	sigfillset (&fullsigset);
		435
		436	pthread_attr_init (&attr);
		437	pthread_attr_setstacksize (&attr, PTHREAD_STACK_MIN < sizeof (long) * 2048 ? sizeof (long) * 2048 : PTHREAD_STACK_MIN);
		438
		439	pthread_sigmask (SIG_SETMASK, &fullsigset, &oldsigset);
		440
		441	if (pthread_create (&self->thrid, &attr, ping_proc, (void *)self))
		442	croak ("AnyEvent::FastPing: unable to create pinger thread");
		443
		444	pthread_sigmask (SIG_SETMASK, &oldsigset, 0);
		445
		446	self->running = 1;
		447	}
		448
		449	static void
		450	pinger_stop (PINGER *self)
		451	{
		452	if (!self->running)
		453	return;
		454
		455	self->running = 0;
		456	pthread_cancel (self->thrid);
		457	pthread_join (self->thrid, 0);
		458	}
		459
		460	static void
		461	pinger_init (PINGER *self)
		462	{
		463	memset (self, 0, sizeof (PINGER));
		464
		465	if (firstfree >= 0)
		466	{
		467	self->id = firstfree;
		468	firstfree = pingerfree [firstfree];
		469	}
		470	else if (pingercnt == 0xffff)
		471	croak ("unable to create more than 65536 AnyEvent::FastPing objects");
		472	else
		473	{
		474	if (pingercnt == pingermax)
		475	{
		476	pingermax = pingermax * 2 + 16;
		477	pingers = realloc (pingers , sizeof (pingers [0]) * pingermax);
		478	pingerfree = realloc (pingerfree, sizeof (pingerfree [0]) * pingermax);
		479	}
		480
		481	self->id = pingercnt++;
		482	}
		483
		484	pingers [self->id] = self;
		485
		486	self->recvcb = &PL_sv_undef;
		487	self->interval = MIN_INTERVAL;
		488	self->maxrtt = 0.5;
		489	self->rangemax = 16;
		490	self->ranges = malloc (sizeof (self->ranges [0]) * self->rangemax);
		491	}
		492
		493	static void
		494	pinger_free (PINGER *self)
		495	{
		496	pinger_stop (self);
		497
		498	pingers [self->id] = 0;
		499
		500	SvREFCNT_dec (self->recvq);
		501	SvREFCNT_dec (self->recvcb);
		502
		503	pingerfree [self->id] = firstfree;
		504	firstfree = self->id;
		505
		506	while (self->rangecnt)
		507	range_free (self->ranges [--self->rangecnt]);
		508
		509	free (self->ranges);
		510	}
		511
		512	static void
		513	pinger_add_range (PINGER self, RANGE range)
		514	{
		515	if (self->rangecnt == self->rangemax)
		516	self->ranges = realloc (self->ranges, sizeof (self->ranges [0]) * (self->rangemax <<= 1));
		517
		518	self->ranges [self->rangecnt] = range;
		519	upheap (self, self->rangecnt);
		520	++self->rangecnt;
		521	}
		522
		523	/*****************************************************************************/
		524
		525	static void
		526	recv_feed (PINGER self, void addr, int addrlen, tstamp rtt)
		527	{
		528	if (!self->recvq)
		529	{
		530	/* first seen this round */
		531	if (!SvOK (self->recvcb))
		532	return;
		533
		534	self->recvq = newAV ();
		535
		536	self->nextrecv = firstrecv;
		537	firstrecv = self->id;
		538	}
		539
		540	{
		541	AV *pkt = newAV ();
		542
		543	av_extend (pkt, 2-1);
		544
		545	AvARRAY (pkt)[0] = newSVpvn (addr, addrlen);
		546	AvARRAY (pkt)[1] = newSVnv (rtt);
		547	AvFILLp (pkt) = 2-1;
		548
		549	av_push (self->recvq, newRV_noinc ((SV *)pkt));
		550	}
		551	}
		552
		553	static void
		554	recv_flush (void)
		555	{
		556	if (firstrecv < 0)
		557	return;
		558
		559	ENTER;
		560	SAVETMPS;
153		561
154	do	562	do
155	{	563	{
156	if ((*addr)[len] != 0xff)	564	dSP;
157	{	565	PINGER *self = pingers [firstrecv];
158	++(*addr)[len];	566	firstrecv = self->nextrecv;
159	break;
160	}
161		567
162	(*addr)[len] = 0;	568	self->nextrecv = -1;
163	}
164	while (len--);
165	}
166		569
167	static void *	570	PUSHMARK (SP);
168	ping_proc (void *unused)	571	XPUSHs (sv_2mortal (newRV_noinc ((SV *)self->recvq)));
169	{	572	self->recvq = 0;
170	PKT pkt;	573	PUTBACK;
171	struct sockaddr_in sa4;	574	call_sv (self->recvcb, G_DISCARD \| G_VOID);
172	#if ENABLE_IPV6
173	struct sockaddr_in6 sa6;
174	#endif
175
176	memset (&pkt, 0, sizeof (pkt));
177
178	memset (&sa4, 0, sizeof (sa4));
179	sa4.sin_family = AF_INET;
180	sa4.sin_port = 0;
181	#if ENABLE_IPV6
182	memset (&sa6, 0, sizeof (sa6));
183	sa6.sin6_family = AF_INET6;
184	sa6.sin6_port = 0;
185	#endif
186
187	for (;;)
188	{
189	REQ *req;
190	int len = read (thr_send [0], &req, sizeof (req));
191
192	tstamp now = NOW ();
193	tstamp next = now;
194
195	if (!len)
196	pthread_exit (0);
197	else if (len != sizeof (req))
198	{
199	perror ("AnyEvent::FastPing: short read or read error");
200	pthread_exit ((void *)-1);
201	}
202
203	//TODO: bind to source address
204
205	pkt.code = 0;
206	pkt.id = (uint16_t)magic;
207	pkt.seq = (uint16_t)~magic;
208	pkt.payload = req->payload;
209
210	{
211	int r;
212	for (r = req->nranges; r--; )
213	inc_addr (&req->ranges [r].hi);
214	}	575	}
		576	while (firstrecv >= 0);
215		577
216	while (req->nranges)	578	FREETMPS;
217	{	579	LEAVE;
218	RANGE *range = req->ranges;
219	int n, k;
220
221	if (!memcmp (&range->lo, &range->hi, sizeof (addr_tt)))
222	req->ranges [0] = req->ranges [--req->nranges];
223	else
224	{
225	// ranges [0] is always the next range to ping
226	tstamp wait = range->next - now;
227
228	// compare with the global frequency limit
229	{
230	tstamp diff = next - now;
231
232	if (wait < diff)
233	wait = diff;
234	else if (range)
235	next = range->next;
236	}
237
238	if (wait > 0.)
239	{
240	struct timespec ts;
241
242	ts.tv_sec = wait;
243	ts.tv_nsec = (wait - ts.tv_sec) * 1000000000.;
244
245	nanosleep (&ts, 0);
246	}
247
248	now = NOW ();
249
250	pkt.stamp = now;
251	pkt.cksum = 0;
252
253	if (range->family == AF_INET)
254	{
255	pkt.type = ICMP4_ECHO;
256	pkt.cksum = icmp_cksum (&pkt, sizeof (pkt));
257
258	memcpy (&sa4.sin_addr,
259	sizeof (addr_tt) - sizeof (sa4.sin_addr) + (char *)&range->lo,
260	sizeof (sa4.sin_addr));
261
262	if (sendto (icmp4_fd, &pkt, sizeof (pkt), 0, (struct sockaddr *)&sa4, sizeof (sa4)) > 0)
263	errno = 0;
264	}
265	else
266	{
267	#if ENABLE_IPV6
268	pkt.type = ICMP6_ECHO;
269
270	memcpy (&sa6.sin6_addr,
271	sizeof (addr_tt) - sizeof (sa6.sin6_addr) + (char *)&range->lo,
272	sizeof (sa6.sin6_addr));
273
274	if (sendto (icmp6_fd, &pkt, sizeof (pkt), 0, (struct sockaddr *)&sa6, sizeof (sa6)) > 0)
275	errno = 0;
276	#endif
277	}
278
279	if (errno == ENOBUFS)
280	{
281	struct timespec ts;
282
283	ts.tv_sec = 0;
284	ts.tv_nsec = DRAIN_INTERVAL * 1000000000;
285
286	nanosleep (&ts, 0);
287	}
288	else
289	{
290	inc_addr (&range->lo);
291
292	range->next = next;
293	range->next += range->interval;
294	}
295
296	next += req->interval;
297	}
298
299	// make a downheap operation
300	for (n = k = 0; ; )
301	{
302	int j = k * 2 + 1;
303
304	++n;
305
306	if (j >= req->nranges)
307	break;
308	else if (j < req->nranges - 1)
309	if (req->ranges [j].next > req->ranges [j + 1].next)
310	++j;
311
312	if (req->ranges [j].next >= req->ranges [k].next)
313	break;
314
315	{
316	RANGE temp = req->ranges [k];
317	req->ranges [k] = req->ranges [j];
318	req->ranges [j] = temp;
319	}
320
321	k = j;
322	}
323	}
324
325	write (thr_recv [1], &req, sizeof (req));
326	}
327
328	return 0;
329	}	580	}
330		581
		582	/*****************************************************************************/
		583
		584	#if 0
331	static void	585	static void
332	feed_reply (AV *res_av)	586	feed_reply (AV *res_av)
333	{	587	{
334	dSP;	588	dSP;
335	SV res = sv_2mortal (newRV_inc ((SV )res_av));	589	SV res = sv_2mortal (newRV_inc ((SV )res_av));
…		…
352	}	606	}
353		607
354	FREETMPS;	608	FREETMPS;
355	LEAVE;	609	LEAVE;
356	}	610	}
		611	#endif
357		612
358	static void	613	static void
359	boot ()	614	boot ()
360	{	615	{
361	sigset_t fullsigset, oldsigset;
362	pthread_attr_t attr;
363
364	if (pipe (thr_send) < 0)
365	croak ("AnyEvent::FastPing: unable to create send pipe");
366
367	if (pipe (thr_recv) < 0)	616	if (pipe (thr_res) < 0)
368	croak ("AnyEvent::FastPing: unable to create receive pipe");	617	croak ("AnyEvent::FastPing: unable to create receive pipe");
		618
		619	sv_setiv (get_sv ("AnyEvent::FastPing::THR_RES_FD", 1), thr_res [0]);
369		620
370	icmp4_fd = socket (AF_INET, SOCK_RAW, IPPROTO_ICMP);	621	icmp4_fd = socket (AF_INET, SOCK_RAW, IPPROTO_ICMP);
371	fcntl (icmp4_fd, F_SETFL, O_NONBLOCK);	622	fcntl (icmp4_fd, F_SETFL, O_NONBLOCK);
372	#ifdef ICMP_FILTER	623	#ifdef ICMP_FILTER
373	{	624	{
…		…
388	setsockopt (icmp6_fd, IPPROTO_ICMPV6, ICMP6_FILTER, &oval, sizeof oval);	639	setsockopt (icmp6_fd, IPPROTO_ICMPV6, ICMP6_FILTER, &oval, sizeof oval);
389	}	640	}
390	# endif	641	# endif
391	#endif	642	#endif
392		643
393	pthread_attr_init (&attr);
394	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
395	#ifdef PTHREAD_SCOPE_PROCESS
396	pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS);
397	#endif
398
399	sigfillset (&fullsigset);
400
401	pthread_sigmask (SIG_SETMASK, &fullsigset, &oldsigset);
402
403	if (pthread_create (&pthrid, &attr, ping_proc, 0))
404	croak ("AnyEvent::FastPing: unable to create pinger thread");
405
406	pthread_sigmask (SIG_SETMASK, &oldsigset, 0);
407
408	sv_setiv (get_sv ("AnyEvent::FastPing::THR_REQ_FD", 1), thr_send [1]);
409	sv_setiv (get_sv ("AnyEvent::FastPing::THR_RES_FD", 1), thr_recv [0]);
410
411	sv_setiv (get_sv ("AnyEvent::FastPing::ICMP4_FD", 1), icmp4_fd);	644	sv_setiv (get_sv ("AnyEvent::FastPing::ICMP4_FD", 1), icmp4_fd);
412	sv_setiv (get_sv ("AnyEvent::FastPing::ICMP6_FD", 1), icmp6_fd);	645	sv_setiv (get_sv ("AnyEvent::FastPing::ICMP6_FD", 1), icmp6_fd);
413	}	646	}
414		647
415	MODULE = AnyEvent::FastPing PACKAGE = AnyEvent::FastPing	648	MODULE = AnyEvent::FastPing PACKAGE = AnyEvent::FastPing PREFIX = pinger_
416		649
417	BOOT:	650	BOOT:
418	{	651	{
419	HV *stash = gv_stashpv ("AnyEvent::FastPing", 1);	652	HV *stash = gv_stashpv ("AnyEvent::FastPing", 1);
420		653
421	cbs = get_av ("AnyEvent::FastPing::CB", 1);	654	if (sizeof (PKT) & 3)
422	magic = getpid () ^ MAGIC;	655	croak ("size of PKT structure is not a multiple of 4");
423		656
424	boot ();	657	boot ();
425		658
426	newCONSTSUB (stash, "ipv4_supported", newSViv (icmp4_fd >= 0));	659	newCONSTSUB (stash, "ipv4_supported", newSViv (icmp4_fd >= 0));
427	newCONSTSUB (stash, "ipv6_supported", newSViv (icmp6_fd >= 0));	660	newCONSTSUB (stash, "ipv6_supported", newSViv (icmp6_fd >= 0));
…		…
430	newCONSTSUB (stash, "icmp6_pktsize", newSViv (HDR_SIZE_IP6 + sizeof (PKT)));	663	newCONSTSUB (stash, "icmp6_pktsize", newSViv (HDR_SIZE_IP6 + sizeof (PKT)));
431	}	664	}
432		665
433	PROTOTYPES: DISABLE	666	PROTOTYPES: DISABLE
434		667
435	SV *
436	_req_icmp_ping (SV ranges, NV interval, U32 payload, SV id)
437	CODE:
438	{
439	AV *rav;
440	int nranges, i;
441	REQ *req;
442
443	if (!SvROK (ranges) \|\| SvTYPE (SvRV (ranges)) != SVt_PVAV)
444	croak ("address ranges must be given as arrayref with lo, hi pairs");
445
446	rav = (AV *)SvRV (ranges);
447	nranges = av_len (rav) + 1;
448
449	req = malloc (sizeof (REQ));
450
451	if (interval < MIN_INTERVAL)
452	interval = MIN_INTERVAL;
453
454	req->id = newSVsv (id);
455	req->interval = interval;
456	req->payload = payload;
457	req->nranges = nranges;
458	req->ranges = (RANGE )malloc (nranges sizeof (RANGE));
459
460	while (nranges--)
461	{
462	SV sv = av_fetch (rav, nranges, 1);
463	SV lo, hi;
464	AV *av;
465	RANGE *r;
466
467	if (!SvROK (sv) \|\| SvTYPE (SvRV (sv)) != SVt_PVAV)
468	croak ("address range must be given as arrayref with lo, hi, interval arrayrefs");
469
470	av = (AV *)SvRV (sv);
471	r = req->ranges + nranges;
472
473	lo = *av_fetch (av, 0, 1);
474	hi = *av_fetch (av, 1, 1);
475
476	sv_utf8_downgrade (lo, 0);
477	sv_utf8_downgrade (hi, 0);
478
479	memset (&r->lo, 0, sizeof (addr_tt));
480	memset (&r->hi, 0, sizeof (addr_tt));
481
482	if (SvPOKp (lo) && SvPOKp (hi))
483	{
484	if (SvCUR (lo) != SvCUR (hi))
485	croak ("all addresses in range must be of the same size (either 4 or 16 bytes)");
486
487	if (SvCUR (lo) == 4)
488	{
489	r->family = AF_INET;
490	memcpy (sizeof (addr_tt) - 4 + (char *)&r->lo, SvPVX (lo), 4);
491	memcpy (sizeof (addr_tt) - 4 + (char *)&r->hi, SvPVX (hi), 4);
492	}
493	else if (SvCUR (lo) == 16)
494	{
495	#if ENABLE_IPV6
496	r->family = AF_INET6;
497	memcpy (&r->lo, SvPVX (lo), sizeof (addr_tt));
498	memcpy (&r->hi, SvPVX (hi), sizeof (addr_tt));
499	#else
500	croak ("IPv6 not supported in this configuration");
501	#endif
502	}
503	else
504	croak ("addresses in range must be either 4 (IPv4) or 16 (IPv6) bytes in length");
505	}
506	else if (SvIOK (lo) && SvIOK (hi))
507	{
508	uint32_t addr;
509
510	r->family = AF_INET;
511
512	addr = htonl (SvUV (lo)); memcpy (sizeof (addr_tt) - 4 + (char *)&r->lo, &addr, 4);
513	addr = htonl (SvUV (hi)); memcpy (sizeof (addr_tt) - 4 + (char *)&r->hi, &addr, 4);
514	}
515	else
516	croak ("addresses in range must be strings with either 4 (IPv4) or 16 (IPv6) octets");
517
518	if (r->family == AF_INET)
519	{
520	if (icmp4_fd < 0)
521	croak ("AnyEvent::FastPing: IPv4 ping support not available on this system");
522	}
523	else
524	{
525	if (icmp6_fd < 0)
526	croak ("AnyEvent::FastPing: IPv6 ping support not available on this system");
527	}
528
529	r->interval = SvNV (*av_fetch (av, 2, 1));
530
531	if (r->interval < req->interval)
532	r->interval = req->interval;
533
534	r->next = 0.;
535	}
536
537	RETVAL = newSVpvn ((char *)&req, sizeof (req));
538	}
539	OUTPUT:
540	RETVAL
541
542	SV *
543	_read_res ()
544	CODE:
545	{
546	REQ *req;
547
548	if (read (thr_recv [0], &req, sizeof (req)) != sizeof (req))
549	RETVAL = &PL_sv_undef;
550
551	RETVAL = req->id;
552	free (req->ranges);
553	free (req);
554	}
555	OUTPUT:
556	RETVAL
557
558	void	668	void
559	_recv_icmp4 (...)	669	_recv_icmp4 (...)
560	CODE:	670	CODE:
561	{	671	{
562	char buf [512];	672	char buf [512];
563	struct sockaddr_in sa;	673	struct sockaddr_in sa;
564	socklen_t sl = sizeof (sa);	674	int maxrecv;
565	AV res_av = av_len (cbs) < 0 ? 0 : (AV )sv_2mortal ((SV *)newAV ());
566	tstamp now = NOW ();
567		675
568	for (;;)	676	for (maxrecv = 256+1; --maxrecv; )
569	{	677	{
		678	PINGER *pinger;
570	IP4HDR iphdr = (IP4HDR )buf;	679	IP4HDR iphdr = (IP4HDR )buf;
		680	socklen_t sl = sizeof (sa);
571	int len = recvfrom (icmp4_fd, buf, sizeof (buf), MSG_TRUNC, (struct sockaddr *)&sa, &sl);	681	int len = recvfrom (icmp4_fd, buf, sizeof (buf), MSG_TRUNC, (struct sockaddr *)&sa, &sl);
572	int hdrlen, totlen;	682	int hdrlen, totlen;
573	PKT *pkt;	683	PKT *pkt;
574		684
575	if (len <= HDR_SIZE_IP4)	685	if (len <= HDR_SIZE_IP4)
576	break;	686	break;
577		687
578	hdrlen = (iphdr->version_ihl & 15) * 4;	688	hdrlen = (iphdr->version_ihl & 15) * 4;
579	totlen = ntohs (iphdr->tot_len);	689	totlen = ntohs (iphdr->tot_len);
580		690
581	// packet corrupt?
582	if (!res_av
583	\|\| totlen > len	691	if (totlen > len
584	\|\| iphdr->protocol != IPPROTO_ICMP	692	\|\| iphdr->protocol != IPPROTO_ICMP
585	\|\| hdrlen < HDR_SIZE_IP4 \|\| hdrlen + sizeof (PKT) != totlen)	693	\|\| hdrlen < HDR_SIZE_IP4 \|\| hdrlen + sizeof (PKT) != totlen)
586	continue;	694	continue;
587		695
588	pkt = (PKT *)(buf + hdrlen);	696	pkt = (PKT *)(buf + hdrlen);
589		697
590	if (pkt->type != ICMP4_ECHO_REPLY	698	if (pkt->type != ICMP4_ECHO_REPLY
591	\|\| pkt->id != (uint16_t) magic	699	\|\| pkt->pinger >= pingercnt
592	\|\| pkt->seq != (uint16_t)~magic	700	\|\| !pingers [pkt->pinger])
593	\|\| !isnormal (pkt->stamp))
594	continue;	701	continue;
595		702
596	{	703	pinger = pingers [pkt->pinger];
597	AV *av = newAV ();
598	av_push (av, newSVpvn ((char *)&sa.sin_addr, 4));
599	av_push (av, newSVnv (now - pkt->stamp));
600	av_push (av, newSVuv (pkt->payload));
601		704
602	av_push (res_av, newRV_noinc ((SV *)av));	705	if (!pkt_is_valid_for (pkt, pinger))
603	}	706	continue;
		707
		708	recv_feed (pinger, &sa.sin_addr, 4, NOW () - pkt_to_ts (pkt));
604	}	709	}
605		710
606	if (res_av)	711	recv_flush ();
607	feed_reply (res_av);
608	}	712	}
609		713
610	void	714	void
611	_recv_icmp6 (...)	715	_recv_icmp6 (...)
612	CODE:	716	CODE:
613	{	717	{
614	struct sockaddr_in6 sa;	718	struct sockaddr_in6 sa;
615	socklen_t sl = sizeof (sa);
616	AV res_av = av_len (cbs) < 0 ? 0 : (AV )sv_2mortal ((SV *)newAV ());
617	PKT pkt;	719	PKT pkt;
618	tstamp now = NOW ();	720	int maxrecv;
619		721
620	for (;;)	722	for (maxrecv = 256+1; --maxrecv; )
621	{	723	{
		724	PINGER *pinger;
		725	socklen_t sl = sizeof (sa);
622	int len = recvfrom (icmp6_fd, &pkt, sizeof (pkt), MSG_TRUNC, (struct sockaddr *)&sa, &sl);	726	int len = recvfrom (icmp6_fd, &pkt, sizeof (pkt), MSG_TRUNC, (struct sockaddr *)&sa, &sl);
623		727
624	if (len != sizeof (PKT))	728	if (len != sizeof (PKT))
625	break;	729	break;
626		730
627	if (!res_av
628	\|\| pkt.type != ICMP6_ECHO_REPLY	731	if (pkt.type != ICMP6_ECHO_REPLY
629	\|\| pkt.id != (uint16_t) magic	732	\|\| pkt.pinger >= pingercnt
630	\|\| pkt.seq != (uint16_t)~magic	733	\|\| !pingers [pkt.pinger])
631	\|\| !isnormal (pkt.stamp))
632	continue;	734	continue;
633		735
634	{	736	pinger = pingers [pkt.pinger];
635	AV *av = newAV ();
636	av_push (av, newSVpvn ((char *)&sa.sin6_addr, 16));
637	av_push (av, newSVnv (now - pkt.stamp));
638	av_push (av, newSVuv (pkt.payload));
639		737
640	av_push (res_av, newRV_noinc ((SV *)av));	738	if (!pkt_is_valid_for (&pkt, pinger))
641	}	739	continue;
		740
		741	recv_feed (pinger, &sa.sin6_addr, 16, NOW () - pkt_to_ts (&pkt));
642	}	742	}
643		743
644	if (res_av)	744	recv_flush ();
645	feed_reply (res_av);
646	}	745	}
647		746
		747	void
		748	_new (SV *klass, UV magic1, UV magic2, UV magic3)
		749	PPCODE:
		750	{
		751	SV *pv = NEWSV (0, sizeof (PINGER));
		752	PINGER self = (PINGER )SvPVX (pv);
		753	SvPOK_only (pv);
		754	XPUSHs (sv_2mortal (sv_bless (newRV_noinc (pv), gv_stashpv (SvPVutf8_nolen (klass), 1))));
		755	pinger_init (self);
		756	self->magic1 = magic1;
		757	self->magic2 = magic2;
		758	self->magic3 = magic3;
		759	}
		760
		761	void
		762	_free (PINGER *self)
		763	CODE:
		764	pinger_free (self);
		765
		766	IV
		767	id (PINGER *self, ...)
		768	CODE:
		769	RETVAL = self->id;
		770	OUTPUT:
		771	RETVAL
		772
		773	void pinger_start (PINGER *self)
		774
		775	void pinger_stop (PINGER *self)
		776
		777	void
		778	_stop_id (UV id)
		779	CODE:
		780	if (id < pingercnt && pingers [id])
		781	pinger_stop (pingers [id]);
		782
		783	void
		784	interval (PINGER *self, NV interval)
		785	CODE:
		786	self->interval = interval > MIN_INTERVAL ? interval : MIN_INTERVAL;
		787
		788	void
		789	max_rtt (PINGER *self, NV maxrtt)
		790	CODE:
		791	self->maxrtt = maxrtt;
		792
		793	void
		794	add_range (PINGER self, SV lo_, SV *hi_, NV interval)
		795	CODE:
		796	{
		797	STRLEN lo_len, hi_len;
		798	char *lo = SvPVbyte (lo_, lo_len);
		799	char *hi = SvPVbyte (hi_, hi_len);
		800	RANGE *range;
		801
		802	if (lo_len != hi_len \|\| (lo_len != 4 && lo_len != 16))
		803	croak ("AnyEvent::FastPing::add_range address range must be specified as two binary IPv4 or IPv6 addresses");
		804
		805	if (lo_len == 4 && icmp4_fd < 0) croak ("IPv4 support unavailable");
		806	if (lo_len == 16 && icmp6_fd < 0) croak ("IPv6 support unavailable");
		807
		808	if (memcmp (lo, hi, lo_len) > 0)
		809	croak ("AnyEvent::FastPing::add_range called with lo > hi");
		810
		811	range = calloc (1, sizeof (RANGE));
		812
		813	range->next = 0;
		814	range->interval = interval > MIN_INTERVAL ? interval : MIN_INTERVAL;
		815	range->addrlen = lo_len;
		816
		817	memcpy (sizeof (addr_tt) - lo_len + (char *)&range->lo, lo, lo_len);
		818	memcpy (sizeof (addr_tt) - lo_len + (char *)&range->hi, hi, lo_len);
		819
		820	pinger_add_range (self, range);
		821	}
		822
		823	void
		824	add_hosts (PINGER self, SV addrs, NV interval)
		825	CODE:
		826	{
		827	AV *av;
		828	int i;
		829	int cnt;
		830	int addrlen;
		831	RANGE *range;
		832
		833	if (!SvROK (addrs) \|\| SvTYPE (SvRV (addrs)) != SVt_PVAV)
		834	croak ("AnyEvent::FastPing::add_hosst expects an arrayref with binary IPv4 or IPv6 addresses");
		835
		836	av = (AV *)SvRV (addrs);
		837	cnt = av_len (av) + 1;
		838
		839	if (!cnt)
		840	XSRETURN_EMPTY;
		841
		842	addrlen = SvCUR (*av_fetch (av, 0, 1));
		843
		844	if (addrlen != 4 && addrlen != 16)
		845	croak ("AnyEvent::FastPing::add_hosts addresses must be specified as binary IPv4 or IPv6 addresses");
		846
		847	for (i = cnt; --i; )
		848	{
		849	SV sv = av_fetch (av, i, 1);
		850
		851	if (!sv_utf8_downgrade (sv, 1) \|\| addrlen != SvCUR (sv))
		852	croak ("AnyEvent::FastPing::add_hosts addresses must all have the same size");
		853	}
		854
		855	range = calloc (1, sizeof (RANGE) + cnt * addrlen);
		856
		857	range->next = 0;
		858	range->interval = interval > MIN_INTERVAL ? interval : MIN_INTERVAL;
		859	range->addrlen = addrlen;
		860	range->addrcnt = cnt;
		861
		862	for (i = cnt; i--; )
		863	memcpy ((uint8_t )(range + 1) + (cnt - 1 - i) addrlen,
		864	SvPVbyte_nolen (*av_fetch (av, i, 1)),
		865	addrlen);
		866
		867	pinger_add_range (self, range);
		868	}
		869
		870	void
		871	on_recv (PINGER self, SV cb)
		872	CODE:
		873	SvREFCNT_dec (self->recvcb);
		874	self->recvcb = newSVsv (cb);
		875

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Comparing AnyEvent-FastPing/FastPing.xs (file contents): Revision 1.8 by root, Sat Jan 29 23:36:49 2011 UTC vs. Revision 1.11 by root, Tue Feb 1 04:06:24 2011 UTC

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Comparing AnyEvent-FastPing/FastPing.xs (file contents):
Revision 1.8 by root, Sat Jan 29 23:36:49 2011 UTC vs.
Revision 1.11 by root, Tue Feb 1 04:06:24 2011 UTC