[ViewVC] Diff of: cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.48 by root, Sun Oct 22 10:33:19 2006 UTC vs.
Revision 1.76 by root, Thu Oct 26 12:38:04 2006 UTC

…		…
		1	/* solaris */
		2	#define _POSIX_PTHREAD_SEMANTICS 1
		3
		4	#if __linux && !defined(_GNU_SOURCE)
		5	# define _GNU_SOURCE
		6	#endif
		7
		8	/* just in case */
1	#define _REENTRANT 1	9	#define _REENTRANT 1
		10
2	#include <errno.h>	11	#include <errno.h>
3		12
4	#include "EXTERN.h"	13	#include "EXTERN.h"
5	#include "perl.h"	14	#include "perl.h"
6	#include "XSUB.h"	15	#include "XSUB.h"
39	/* used for struct dirent, AIX doesn't provide it */	48	/* used for struct dirent, AIX doesn't provide it */
40	#ifndef NAME_MAX	49	#ifndef NAME_MAX
41	# define NAME_MAX 4096	50	# define NAME_MAX 4096
42	#endif	51	#endif
43		52
		53	#ifndef PTHREAD_STACK_MIN
		54	/* care for broken platforms, e.g. windows */
		55	# define PTHREAD_STACK_MIN 16384
		56	#endif
		57
44	#if __ia64	58	#if __ia64
45	# define STACKSIZE 65536	59	# define STACKSIZE 65536
		60	#elif __i386 \|\| __x86_64 /* 16k is unreasonably high :( */
		61	# define STACKSIZE PTHREAD_STACK_MIN
46	#else	62	#else
47	# define STACKSIZE 8192	63	# define STACKSIZE 16384
48	#endif	64	#endif
		65
		66	/* buffer size for various temporary buffers */
		67	#define AIO_BUFSIZE 65536
		68
		69	#define dBUF \
		70	char *aio_buf; \
		71	LOCK (wrklock); \
		72	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
		73	UNLOCK (wrklock); \
		74	if (!aio_buf) \
		75	return -1;
49		76
50	enum {	77	enum {
51	REQ_QUIT,	78	REQ_QUIT,
52	REQ_OPEN, REQ_CLOSE,	79	REQ_OPEN, REQ_CLOSE,
53	REQ_READ, REQ_WRITE, REQ_READAHEAD,	80	REQ_READ, REQ_WRITE, REQ_READAHEAD,
…		…
55	REQ_STAT, REQ_LSTAT, REQ_FSTAT,	82	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
56	REQ_FSYNC, REQ_FDATASYNC,	83	REQ_FSYNC, REQ_FDATASYNC,
57	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,	84	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
58	REQ_READDIR,	85	REQ_READDIR,
59	REQ_LINK, REQ_SYMLINK,	86	REQ_LINK, REQ_SYMLINK,
60	REQ_SLEEP,	87	REQ_GROUP, REQ_NOP,
61	REQ_GROUP,	88	REQ_BUSY,
62	};	89	};
63		90
64	#define AIO_REQ_KLASS "IO::AIO::REQ"	91	#define AIO_REQ_KLASS "IO::AIO::REQ"
65	#define AIO_GRP_KLASS "IO::AIO::GRP"	92	#define AIO_GRP_KLASS "IO::AIO::GRP"
66		93
67	typedef struct aio_cb	94	typedef struct aio_cb
68	{	95	{
69	struct aio_cb grp, grp_prev, *grp_next;
70
71	struct aio_cb *volatile next;	96	struct aio_cb *volatile next;
72
73	SV self; / the perl counterpart of this request, if any */
74		97
75	SV data, callback;	98	SV data, callback;
76	SV fh, fh2;	99	SV fh, fh2;
77	void dataptr, data2ptr;	100	void dataptr, data2ptr;
78	Stat_t *statdata;	101	Stat_t *statdata;
79	off_t offset;	102	off_t offset;
80	size_t length;	103	size_t length;
81	ssize_t result;	104	ssize_t result;
82		105
		106	STRLEN dataoffset;
83	int type;	107	int type;
84	int fd, fd2;	108	int fd, fd2;
85	int errorno;	109	int errorno;
86	STRLEN dataoffset;
87	mode_t mode; /* open */	110	mode_t mode; /* open */
		111
88	unsigned char cancelled;	112	unsigned char flags;
		113	unsigned char pri;
		114
		115	SV self; / the perl counterpart of this request, if any */
		116	struct aio_cb grp, grp_prev, grp_next, grp_first;
89	} aio_cb;	117	} aio_cb;
		118
		119	enum {
		120	FLAG_CANCELLED = 0x01,
		121	};
90		122
91	typedef aio_cb *aio_req;	123	typedef aio_cb *aio_req;
92	typedef aio_cb *aio_req_ornot;	124	typedef aio_cb *aio_req_ornot;
93		125
		126	enum {
		127	PRI_MIN = -4,
		128	PRI_MAX = 4,
		129
		130	DEFAULT_PRI = 0,
		131	PRI_BIAS = -PRI_MIN,
		132	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
		133	};
		134
		135	static int next_pri = DEFAULT_PRI + PRI_BIAS;
		136
94	static int started, wanted;	137	static int started, wanted;
95	static volatile int nreqs;	138	static volatile int nreqs;
96	static int max_outstanding = 1<<30;
97	static int respipe [2];	139	static int respipe [2];
98		140
		141	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
		142	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
		143	#else
		144	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
		145	#endif
		146
		147	#define LOCK(mutex) pthread_mutex_lock (&(mutex))
		148	#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
		149
		150	/* worker threads management */
		151	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
		152
		153	typedef struct worker {
		154	/* locked by wrklock */
		155	struct worker prev, next;
		156
		157	pthread_t tid;
		158
		159	/* locked by reslock, reqlock or wrklock */
		160	aio_req req; /* currently processed request */
		161	void *dbuf;
		162	DIR *dirp;
		163	} worker;
		164
		165	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
		166
		167	static void worker_clear (worker *wrk)
		168	{
		169	if (wrk->dirp)
		170	{
		171	closedir (wrk->dirp);
		172	wrk->dirp = 0;
		173	}
		174
		175	if (wrk->dbuf)
		176	{
		177	free (wrk->dbuf);
		178	wrk->dbuf = 0;
		179	}
		180	}
		181
		182	static void worker_free (worker *wrk)
		183	{
		184	wrk->next->prev = wrk->prev;
		185	wrk->prev->next = wrk->next;
		186
		187	free (wrk);
		188	}
		189
99	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	190	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
100	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;	191	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
101	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	192	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
102		193
103	static volatile aio_req reqs, reqe; /* queue start, queue end */	194	/*
104	static volatile aio_req ress, rese; /* queue start, queue end */	195	* a somewhat faster data structure might be nice, but
		196	* with 8 priorities this actually needs <20 insns
		197	* per shift, the most expensive operation.
		198	*/
		199	typedef struct {
		200	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
		201	int size;
		202	} reqq;
105		203
		204	static reqq req_queue;
		205	static reqq res_queue;
		206
		207	int reqq_push (reqq *q, aio_req req)
		208	{
		209	int pri = req->pri;
		210	req->next = 0;
		211
		212	if (q->qe[pri])
		213	{
		214	q->qe[pri]->next = req;
		215	q->qe[pri] = req;
		216	}
		217	else
		218	q->qe[pri] = q->qs[pri] = req;
		219
		220	return q->size++;
		221	}
		222
		223	aio_req reqq_shift (reqq *q)
		224	{
		225	int pri;
		226
		227	if (!q->size)
		228	return 0;
		229
		230	--q->size;
		231
		232	for (pri = NUM_PRI; pri--; )
		233	{
		234	aio_req req = q->qs[pri];
		235
		236	if (req)
		237	{
		238	if (!(q->qs[pri] = req->next))
		239	q->qe[pri] = 0;
		240
		241	return req;
		242	}
		243	}
		244
		245	abort ();
		246	}
		247
		248	static int poll_cb (int max);
		249	static void req_invoke (aio_req req);
106	static void req_free (aio_req req);	250	static void req_free (aio_req req);
		251	static void req_cancel (aio_req req);
107		252
108	/* must be called at most once */	253	/* must be called at most once */
109	static SV req_sv (aio_req req, const char klass)	254	static SV req_sv (aio_req req, const char klass)
110	{	255	{
		256	if (!req->self)
		257	{
111	req->self = (SV *)newHV ();	258	req->self = (SV *)newHV ();
112	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	259	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
		260	}
113		261
114	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	262	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));
115	}	263	}
116		264
117	static aio_req SvAIO_REQ (SV *sv)	265	static aio_req SvAIO_REQ (SV *sv)
118	{	266	{
		267	MAGIC *mg;
		268
119	if (!sv_derived_from (sv, AIO_REQ_KLASS) \|\| !SvROK (sv))	269	if (!sv_derived_from (sv, AIO_REQ_KLASS) \|\| !SvROK (sv))
120	croak ("object of class " AIO_REQ_KLASS " expected");	270	croak ("object of class " AIO_REQ_KLASS " expected");
121		271
122	MAGIC *mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	272	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
123		273
124	return mg ? (aio_req)mg->mg_ptr : 0;	274	return mg ? (aio_req)mg->mg_ptr : 0;
125	}	275	}
126		276
		277	static void aio_grp_feed (aio_req grp)
		278	{
		279	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))
		280	{
		281	int old_len = grp->length;
		282
		283	if (grp->fh2 && SvOK (grp->fh2))
		284	{
		285	dSP;
		286
		287	ENTER;
		288	SAVETMPS;
		289	PUSHMARK (SP);
		290	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
		291	PUTBACK;
		292	call_sv (grp->fh2, G_VOID \| G_EVAL \| G_KEEPERR);
		293	SPAGAIN;
		294	FREETMPS;
		295	LEAVE;
		296	}
		297
		298	/* stop if no progress has been made */
		299	if (old_len == grp->length)
		300	{
		301	SvREFCNT_dec (grp->fh2);
		302	grp->fh2 = 0;
		303	break;
		304	}
		305	}
		306	}
		307
		308	static void aio_grp_dec (aio_req grp)
		309	{
		310	--grp->length;
		311
		312	/* call feeder, if applicable */
		313	aio_grp_feed (grp);
		314
		315	/* finish, if done */
		316	if (!grp->length && grp->fd)
		317	{
		318	req_invoke (grp);
		319	req_free (grp);
		320	}
		321	}
		322
127	static void poll_wait ()	323	static void poll_wait ()
128	{	324	{
129	if (nreqs && !ress)
130	{
131	fd_set rfd;	325	fd_set rfd;
		326
		327	while (nreqs)
		328	{
		329	int size;
		330	#if !(__i386 \|\| __x86_64) /* safe without sempahore on these archs */
		331	LOCK (reslock);
		332	#endif
		333	size = res_queue.size;
		334	#if !(__i386 \|\| __x86_64) /* safe without sempahore on these archs */
		335	UNLOCK (reslock);
		336	#endif
		337
		338	if (size)
		339	return;
		340
132	FD_ZERO(&rfd);	341	FD_ZERO(&rfd);
133	FD_SET(respipe [0], &rfd);	342	FD_SET(respipe [0], &rfd);
134		343
135	select (respipe [0] + 1, &rfd, 0, 0, 0);	344	select (respipe [0] + 1, &rfd, 0, 0, 0);
136	}	345	}
137	}	346	}
138		347
139	static void req_invoke (aio_req req)	348	static void req_invoke (aio_req req)
140	{	349	{
141	dSP;	350	dSP;
142	int errorno = errno;
143		351
144	if (req->cancelled \|\| !SvOK (req->callback))	352	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
145	return;	353	{
146
147	errno = req->errorno;	354	errno = req->errorno;
148		355
149	ENTER;	356	ENTER;
		357	SAVETMPS;
150	PUSHMARK (SP);	358	PUSHMARK (SP);
151	EXTEND (SP, 1);	359	EXTEND (SP, 1);
152		360
153	switch (req->type)	361	switch (req->type)
154	{
155	case REQ_READDIR:
156	{	362	{
157	SV *rv = &PL_sv_undef;	363	case REQ_READDIR:
158
159	if (req->result >= 0)
160	{	364	{
161	char *buf = req->data2ptr;	365	SV *rv = &PL_sv_undef;
162	AV *av = newAV ();
163		366
164	while (req->result)	367	if (req->result >= 0)
165	{	368	{
		369	int i;
		370	char *buf = req->data2ptr;
		371	AV *av = newAV ();
		372
		373	av_extend (av, req->result - 1);
		374
		375	for (i = 0; i < req->result; ++i)
		376	{
166	SV *sv = newSVpv (buf, 0);	377	SV *sv = newSVpv (buf, 0);
167		378
168	av_push (av, sv);	379	av_store (av, i, sv);
169	buf += SvCUR (sv) + 1;	380	buf += SvCUR (sv) + 1;
170	req->result--;	381	}
		382
		383	rv = sv_2mortal (newRV_noinc ((SV *)av));
171	}	384	}
172		385
173	rv = sv_2mortal (newRV_noinc ((SV *)av));	386	PUSHs (rv);
174	}	387	}
		388	break;
175		389
176	PUSHs (rv);	390	case REQ_OPEN:
		391	{
		392	/* convert fd to fh */
		393	SV *fh;
		394
		395	PUSHs (sv_2mortal (newSViv (req->result)));
		396	PUTBACK;
		397	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);
		398	SPAGAIN;
		399
		400	fh = SvREFCNT_inc (POPs);
		401
		402	PUSHMARK (SP);
		403	XPUSHs (sv_2mortal (fh));
		404	}
		405	break;
		406
		407	case REQ_GROUP:
		408	req->fd = 2; /* mark group as finished */
		409
		410	if (req->data)
		411	{
		412	int i;
		413	AV av = (AV )req->data;
		414
		415	EXTEND (SP, AvFILL (av) + 1);
		416	for (i = 0; i <= AvFILL (av); ++i)
		417	PUSHs (*av_fetch (av, i, 0));
		418	}
		419	break;
		420
		421	case REQ_NOP:
		422	case REQ_BUSY:
		423	break;
		424
		425	default:
		426	PUSHs (sv_2mortal (newSViv (req->result)));
		427	break;
177	}	428	}
178	break;
179		429
180	case REQ_OPEN:
181	{
182	/* convert fd to fh */
183	SV *fh;
184		430
185	PUSHs (sv_2mortal (newSViv (req->result)));
186	PUTBACK;	431	PUTBACK;
187	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);
188	SPAGAIN;
189
190	fh = SvREFCNT_inc (POPs);
191
192	PUSHMARK (SP);
193	XPUSHs (sv_2mortal (fh));
194	}
195	break;
196
197	case REQ_GROUP:
198	if (req->data)
199	{
200	int i;
201	AV av = (AV )req->data;
202
203	EXTEND (SP, AvFILL (av) + 1);
204	for (i = 0; i <= AvFILL (av); ++i)
205	PUSHs (*av_fetch (av, i, 0));
206	}
207	break;
208
209	case REQ_SLEEP:
210	break;
211
212	default:
213	PUSHs (sv_2mortal (newSViv (req->result)));
214	break;
215	}
216
217
218	PUTBACK;
219	call_sv (req->callback, G_VOID \| G_EVAL);	432	call_sv (req->callback, G_VOID \| G_EVAL);
220	SPAGAIN;	433	SPAGAIN;
		434
		435	FREETMPS;
		436	LEAVE;
		437	}
		438
		439	if (req->grp)
		440	{
		441	aio_req grp = req->grp;
		442
		443	/* unlink request */
		444	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
		445	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
		446
		447	if (grp->grp_first == req)
		448	grp->grp_first = req->grp_next;
		449
		450	aio_grp_dec (grp);
		451	}
221		452
222	if (SvTRUE (ERRSV))	453	if (SvTRUE (ERRSV))
223	{	454	{
224	req_free (req);	455	req_free (req);
225	croak (0);	456	croak (0);
226	}	457	}
227
228	LEAVE;
229
230	errno = errorno;
231	}	458	}
232		459
233	static void req_free (aio_req req)	460	static void req_free (aio_req req)
234	{	461	{
235	if (req->grp)
236	{
237	aio_req grp = req->grp;
238
239	/* unlink request */
240	req->grp_next->grp_prev = req->grp_prev;
241	req->grp_prev->grp_next = req->grp_next;
242
243	if (grp->grp_next == grp && grp->fd)
244	{
245	req_invoke (grp);
246	req_free (grp);
247	}
248	}
249
250	if (req->self)	462	if (req->self)
251	{	463	{
252	sv_unmagic (req->self, PERL_MAGIC_ext);	464	sv_unmagic (req->self, PERL_MAGIC_ext);
253	SvREFCNT_dec (req->self);	465	SvREFCNT_dec (req->self);
254	}	466	}
255		467
256	if (req->data)
257	SvREFCNT_dec (req->data);	468	SvREFCNT_dec (req->data);
258
259	if (req->fh)
260	SvREFCNT_dec (req->fh);	469	SvREFCNT_dec (req->fh);
261
262	if (req->fh2)
263	SvREFCNT_dec (req->fh2);	470	SvREFCNT_dec (req->fh2);
264
265	if (req->statdata)
266	Safefree (req->statdata);
267
268	if (req->callback)
269	SvREFCNT_dec (req->callback);	471	SvREFCNT_dec (req->callback);
		472	Safefree (req->statdata);
270		473
271	if (req->type == REQ_READDIR && req->result >= 0)	474	if (req->type == REQ_READDIR)
272	free (req->data2ptr);	475	free (req->data2ptr);
273		476
274	Safefree (req);	477	Safefree (req);
275	}	478	}
276		479
		480	static void req_cancel_subs (aio_req grp)
		481	{
		482	aio_req sub;
		483
		484	if (grp->type != REQ_GROUP)
		485	return;
		486
		487	SvREFCNT_dec (grp->fh2);
		488	grp->fh2 = 0;
		489
		490	for (sub = grp->grp_first; sub; sub = sub->grp_next)
		491	req_cancel (sub);
		492	}
		493
277	static void req_cancel (aio_req req)	494	static void req_cancel (aio_req req)
278	{	495	{
279	req->cancelled = 1;	496	req->flags \|= FLAG_CANCELLED;
280		497
281	if (req->type == REQ_GROUP)	498	req_cancel_subs (req);
282	{
283	aio_req sub;
284
285	for (sub = req->grp_next; sub != req; sub = sub->grp_next)
286	req_cancel (sub);
287	}
288	}	499	}
289		500
290	static int poll_cb ()	501	static int poll_cb (int max)
291	{	502	{
292	dSP;	503	dSP;
293	int count = 0;	504	int count = 0;
294	int do_croak = 0;	505	int do_croak = 0;
295	aio_req req;	506	aio_req req;
296		507
297	for (;;)	508	while (max <= 0 \|\| count < max)
298	{	509	{
299	pthread_mutex_lock (&reslock);	510	LOCK (reslock);
300	req = ress;	511	req = reqq_shift (&res_queue);
301		512
302	if (req)	513	if (req)
303	{	514	{
304	ress = req->next;
305
306	if (!ress)	515	if (!res_queue.size)
307	{	516	{
308	/* read any signals sent by the worker threads */	517	/* read any signals sent by the worker threads */
309	char buf [32];	518	char buf [32];
310	while (read (respipe [0], buf, 32) == 32)	519	while (read (respipe [0], buf, 32) == 32)
311	;	520	;
312
313	rese = 0;
314	}	521	}
315	}	522	}
316		523
317	pthread_mutex_unlock (&reslock);	524	UNLOCK (reslock);
318		525
319	if (!req)	526	if (!req)
320	break;	527	break;
321		528
322	nreqs--;	529	--nreqs;
323		530
324	if (req->type == REQ_QUIT)	531	if (req->type == REQ_QUIT)
325	started--;	532	started--;
326	else if (req->type == REQ_GROUP && req->grp_next != req)	533	else if (req->type == REQ_GROUP && req->length)
327	{	534	{
328	req->fd = 1; /* mark request as delayed */	535	req->fd = 1; /* mark request as delayed */
329	continue;	536	continue;
330	}	537	}
331	else	538	else
…		…
357	static void aio_proc(void arg);	564	static void aio_proc(void arg);
358		565
359	static void start_thread (void)	566	static void start_thread (void)
360	{	567	{
361	sigset_t fullsigset, oldsigset;	568	sigset_t fullsigset, oldsigset;
362	pthread_t tid;
363	pthread_attr_t attr;	569	pthread_attr_t attr;
		570
		571	worker *wrk = calloc (1, sizeof (worker));
		572
		573	if (!wrk)
		574	croak ("unable to allocate worker thread data");
364		575
365	pthread_attr_init (&attr);	576	pthread_attr_init (&attr);
366	pthread_attr_setstacksize (&attr, STACKSIZE);	577	pthread_attr_setstacksize (&attr, STACKSIZE);
367	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);	578	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
368		579
369	sigfillset (&fullsigset);	580	sigfillset (&fullsigset);
		581
		582	LOCK (wrklock);
370	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);	583	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
371		584
372	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)	585	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
		586	{
		587	wrk->prev = &wrk_first;
		588	wrk->next = wrk_first.next;
		589	wrk_first.next->prev = wrk;
		590	wrk_first.next = wrk;
373	started++;	591	started++;
		592	}
		593	else
		594	free (wrk);
374		595
375	sigprocmask (SIG_SETMASK, &oldsigset, 0);	596	sigprocmask (SIG_SETMASK, &oldsigset, 0);
		597	UNLOCK (wrklock);
376	}	598	}
377		599
378	static void req_send (aio_req req)	600	static void req_send (aio_req req)
379	{	601	{
380	while (started < wanted && nreqs >= started)	602	while (started < wanted && nreqs >= started)
381	start_thread ();	603	start_thread ();
382		604
383	nreqs++;	605	++nreqs;
384		606
385	pthread_mutex_lock (&reqlock);	607	LOCK (reqlock);
386		608	reqq_push (&req_queue, req);
387	req->next = 0;
388
389	if (reqe)
390	{
391	reqe->next = req;
392	reqe = req;
393	}
394	else
395	reqe = reqs = req;
396
397	pthread_cond_signal (&reqwait);	609	pthread_cond_signal (&reqwait);
398	pthread_mutex_unlock (&reqlock);	610	UNLOCK (reqlock);
399
400	if (nreqs > max_outstanding)
401	for (;;)
402	{
403	poll_cb ();
404
405	if (nreqs <= max_outstanding)
406	break;
407
408	poll_wait ();
409	}
410	}	611	}
411		612
412	static void end_thread (void)	613	static void end_thread (void)
413	{	614	{
414	aio_req req;	615	aio_req req;
		616
415	Newz (0, req, 1, aio_cb);	617	Newz (0, req, 1, aio_cb);
		618
416	req->type = REQ_QUIT;	619	req->type = REQ_QUIT;
		620	req->pri = PRI_MAX + PRI_BIAS;
417		621
418	req_send (req);	622	req_send (req);
419	}	623	}
420		624
421	static void min_parallel (int nthreads)	625	static void min_parallel (int nthreads)
…		…
438	}	642	}
439		643
440	while (started > wanted)	644	while (started > wanted)
441	{	645	{
442	poll_wait ();	646	poll_wait ();
443	poll_cb ();	647	poll_cb (0);
444	}	648	}
445	}	649	}
446		650
447	static void create_pipe ()	651	static void create_pipe ()
448	{	652	{
…		…
473	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)	677	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
474	{	678	{
475	ssize_t res;	679	ssize_t res;
476	off_t ooffset;	680	off_t ooffset;
477		681
478	pthread_mutex_lock (&preadwritelock);	682	LOCK (preadwritelock);
479	ooffset = lseek (fd, 0, SEEK_CUR);	683	ooffset = lseek (fd, 0, SEEK_CUR);
480	lseek (fd, offset, SEEK_SET);	684	lseek (fd, offset, SEEK_SET);
481	res = read (fd, buf, count);	685	res = read (fd, buf, count);
482	lseek (fd, ooffset, SEEK_SET);	686	lseek (fd, ooffset, SEEK_SET);
483	pthread_mutex_unlock (&preadwritelock);	687	UNLOCK (preadwritelock);
484		688
485	return res;	689	return res;
486	}	690	}
487		691
488	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)	692	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
489	{	693	{
490	ssize_t res;	694	ssize_t res;
491	off_t ooffset;	695	off_t ooffset;
492		696
493	pthread_mutex_lock (&preadwritelock);	697	LOCK (preadwritelock);
494	ooffset = lseek (fd, 0, SEEK_CUR);	698	ooffset = lseek (fd, 0, SEEK_CUR);
495	lseek (fd, offset, SEEK_SET);	699	lseek (fd, offset, SEEK_SET);
496	res = write (fd, buf, count);	700	res = write (fd, buf, count);
497	lseek (fd, offset, SEEK_SET);	701	lseek (fd, offset, SEEK_SET);
498	pthread_mutex_unlock (&preadwritelock);	702	UNLOCK (preadwritelock);
499		703
500	return res;	704	return res;
501	}	705	}
502	#endif	706	#endif
503		707
504	#if !HAVE_FDATASYNC	708	#if !HAVE_FDATASYNC
505	# define fdatasync fsync	709	# define fdatasync fsync
506	#endif	710	#endif
507		711
508	#if !HAVE_READAHEAD	712	#if !HAVE_READAHEAD
509	# define readahead aio_readahead	713	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
510		714
511	static ssize_t readahead (int fd, off_t offset, size_t count)	715	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
512	{	716	{
513	char readahead_buf[4096];	717	dBUF;
514		718
515	while (count > 0)	719	while (count > 0)
516	{	720	{
517	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);	721	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
518		722
519	pread (fd, readahead_buf, len, offset);	723	pread (fd, aio_buf, len, offset);
520	offset += len;	724	offset += len;
521	count -= len;	725	count -= len;
522	}	726	}
523		727
524	errno = 0;	728	errno = 0;
525	}	729	}
		730
526	#endif	731	#endif
527		732
528	#if !HAVE_READDIR_R	733	#if !HAVE_READDIR_R
529	# define readdir_r aio_readdir_r	734	# define readdir_r aio_readdir_r
530		735
…		…
533	static int readdir_r (DIR dirp, struct dirent ent, struct dirent **res)	738	static int readdir_r (DIR dirp, struct dirent ent, struct dirent **res)
534	{	739	{
535	struct dirent *e;	740	struct dirent *e;
536	int errorno;	741	int errorno;
537		742
538	pthread_mutex_lock (&readdirlock);	743	LOCK (readdirlock);
539		744
540	e = readdir (dirp);	745	e = readdir (dirp);
541	errorno = errno;	746	errorno = errno;
542		747
543	if (e)	748	if (e)
…		…
546	strcpy (ent->d_name, e->d_name);	751	strcpy (ent->d_name, e->d_name);
547	}	752	}
548	else	753	else
549	*res = 0;	754	*res = 0;
550		755
551	pthread_mutex_unlock (&readdirlock);	756	UNLOCK (readdirlock);
552		757
553	errno = errorno;	758	errno = errorno;
554	return e ? 0 : -1;	759	return e ? 0 : -1;
555	}	760	}
556	#endif	761	#endif
557		762
558	/* sendfile always needs emulation */	763	/* sendfile always needs emulation */
559	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count)	764	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
560	{	765	{
561	ssize_t res;	766	ssize_t res;
562		767
563	if (!count)	768	if (!count)
564	return 0;	769	return 0;
…		…
613	#endif	818	#endif
614	)	819	)
615	)	820	)
616	{	821	{
617	/* emulate sendfile. this is a major pain in the ass */	822	/* emulate sendfile. this is a major pain in the ass */
618	char buf[4096];	823	dBUF;
		824
619	res = 0;	825	res = 0;
620		826
621	while (count)	827	while (count)
622	{	828	{
623	ssize_t cnt;	829	ssize_t cnt;
624		830
625	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);	831	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
626		832
627	if (cnt <= 0)	833	if (cnt <= 0)
628	{	834	{
629	if (cnt && !res) res = -1;	835	if (cnt && !res) res = -1;
630	break;	836	break;
631	}	837	}
632		838
633	cnt = write (ofd, buf, cnt);	839	cnt = write (ofd, aio_buf, cnt);
634		840
635	if (cnt <= 0)	841	if (cnt <= 0)
636	{	842	{
637	if (cnt && !res) res = -1;	843	if (cnt && !res) res = -1;
638	break;	844	break;
…		…
646		852
647	return res;	853	return res;
648	}	854	}
649		855
650	/* read a full directory */	856	/* read a full directory */
651	static int scandir_ (const char path, void *namesp)	857	static void scandir_ (aio_req req, worker *self)
652	{	858	{
653	DIR *dirp = opendir (path);	859	DIR *dirp;
654	union	860	union
655	{	861	{
656	struct dirent d;	862	struct dirent d;
657	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];	863	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
658	} u;	864	} *u;
659	struct dirent *entp;	865	struct dirent *entp;
660	char name, names;	866	char name, names;
661	int memlen = 4096;	867	int memlen = 4096;
662	int memofs = 0;	868	int memofs = 0;
663	int res = 0;	869	int res = 0;
664	int errorno;	870	int errorno;
665		871
666	if (!dirp)	872	LOCK (wrklock);
667	return -1;	873	self->dirp = dirp = opendir (req->dataptr);
668		874	self->dbuf = u = malloc (sizeof (*u));
669	names = malloc (memlen);	875	req->data2ptr = names = malloc (memlen);
		876	UNLOCK (wrklock);
670		877
		878	if (dirp && u && names)
671	for (;;)	879	for (;;)
672	{	880	{
		881	errno = 0;
673	errno = 0, readdir_r (dirp, &u.d, &entp);	882	readdir_r (dirp, &u->d, &entp);
674		883
675	if (!entp)	884	if (!entp)
676	break;	885	break;
677		886
678	name = entp->d_name;	887	name = entp->d_name;
679		888
680	if (name [0] != '.' \|\| (name [1] && (name [1] != '.' \|\| name [2])))	889	if (name [0] != '.' \|\| (name [1] && (name [1] != '.' \|\| name [2])))
681	{	890	{
682	int len = strlen (name) + 1;	891	int len = strlen (name) + 1;
683		892
684	res++;	893	res++;
685		894
686	while (memofs + len > memlen)	895	while (memofs + len > memlen)
687	{	896	{
688	memlen *= 2;	897	memlen *= 2;
		898	LOCK (wrklock);
689	names = realloc (names, memlen);	899	req->data2ptr = names = realloc (names, memlen);
		900	UNLOCK (wrklock);
		901
690	if (!names)	902	if (!names)
691	break;	903	break;
692	}	904	}
693		905
694	memcpy (names + memofs, name, len);	906	memcpy (names + memofs, name, len);
695	memofs += len;	907	memofs += len;
696	}	908	}
697	}	909	}
698		910
699	errorno = errno;
700	closedir (dirp);
701
702	if (errorno)	911	if (errno)
703	{
704	free (names);
705	errno = errorno;
706	res = -1;	912	res = -1;
707	}	913
708		914	req->result = res;
709	namesp = (void )names;
710	return res;
711	}	915	}
712		916
713	/*****************************************************************************/	917	/*****************************************************************************/
714		918
715	static void aio_proc (void thr_arg)	919	static void aio_proc (void thr_arg)
716	{	920	{
717	aio_req req;	921	aio_req req;
718	int type;	922	int type;
		923	worker self = (worker )thr_arg;
719		924
720	do	925	do
721	{	926	{
722	pthread_mutex_lock (&reqlock);	927	LOCK (reqlock);
723		928
724	for (;;)	929	for (;;)
725	{	930	{
726	req = reqs;	931	self->req = req = reqq_shift (&req_queue);
727
728	if (reqs)
729	{
730	reqs = reqs->next;
731	if (!reqs) reqe = 0;
732	}
733		932
734	if (req)	933	if (req)
735	break;	934	break;
736		935
737	pthread_cond_wait (&reqwait, &reqlock);	936	pthread_cond_wait (&reqwait, &reqlock);
738	}	937	}
739		938
740	pthread_mutex_unlock (&reqlock);	939	UNLOCK (reqlock);
741		940
742	errno = 0; /* strictly unnecessary */	941	errno = 0; /* strictly unnecessary */
		942	type = req->type; /* remember type for QUIT check */
743		943
744	if (!req->cancelled)	944	if (!(req->flags & FLAG_CANCELLED))
745	switch (req->type)	945	switch (type)
746	{	946	{
747	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;	947	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
748	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;	948	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
749		949
750	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	950	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
751	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;	951	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length, self); break;
752		952
753	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	953	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
754	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	954	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
755	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	955	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
756		956
…		…
762	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;	962	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
763	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;	963	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
764		964
765	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	965	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
766	case REQ_FSYNC: req->result = fsync (req->fd); break;	966	case REQ_FSYNC: req->result = fsync (req->fd); break;
767	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;	967	case REQ_READDIR: scandir_ (req, self); break;
768		968
769	case REQ_SLEEP:	969	case REQ_BUSY:
770	{	970	{
771	struct timeval tv;	971	struct timeval tv;
772		972
773	tv.tv_sec = req->fd;	973	tv.tv_sec = req->fd;
774	tv.tv_usec = req->fd2;	974	tv.tv_usec = req->fd2;
775		975
776	req->result = select (0, 0, 0, 0, &tv);	976	req->result = select (0, 0, 0, 0, &tv);
777	}	977	}
778		978
		979	case REQ_GROUP:
		980	case REQ_NOP:
779	case REQ_QUIT:	981	case REQ_QUIT:
780	break;	982	break;
781		983
782	default:	984	default:
783	req->result = ENOSYS;	985	req->result = ENOSYS;
784	break;	986	break;
785	}	987	}
786		988
787	req->errorno = errno;	989	req->errorno = errno;
788		990
789	pthread_mutex_lock (&reslock);	991	LOCK (reslock);
790		992
791	req->next = 0;	993	if (!reqq_push (&res_queue, req))
792
793	if (rese)
794	{
795	rese->next = req;
796	rese = req;
797	}
798	else
799	{
800	rese = ress = req;
801
802	/* write a dummy byte to the pipe so fh becomes ready */	994	/* write a dummy byte to the pipe so fh becomes ready */
803	write (respipe [1], &respipe, 1);	995	write (respipe [1], &respipe, 1);
804	}
805		996
806	pthread_mutex_unlock (&reslock);	997	self->req = 0;
		998	worker_clear (self);
		999
		1000	UNLOCK (reslock);
807	}	1001	}
808	while (type != REQ_QUIT);	1002	while (type != REQ_QUIT);
809		1003
		1004	LOCK (wrklock);
		1005	worker_free (self);
		1006	UNLOCK (wrklock);
		1007
810	return 0;	1008	return 0;
811	}	1009	}
812		1010
813	/*****************************************************************************/	1011	/*****************************************************************************/
814		1012
815	static void atfork_prepare (void)	1013	static void atfork_prepare (void)
816	{	1014	{
817	pthread_mutex_lock (&reqlock);	1015	LOCK (wrklock);
818	pthread_mutex_lock (&reslock);	1016	LOCK (reqlock);
		1017	LOCK (reslock);
819	#if !HAVE_PREADWRITE	1018	#if !HAVE_PREADWRITE
820	pthread_mutex_lock (&preadwritelock);	1019	LOCK (preadwritelock);
821	#endif	1020	#endif
822	#if !HAVE_READDIR_R	1021	#if !HAVE_READDIR_R
823	pthread_mutex_lock (&readdirlock);	1022	LOCK (readdirlock);
824	#endif	1023	#endif
825	}	1024	}
826		1025
827	static void atfork_parent (void)	1026	static void atfork_parent (void)
828	{	1027	{
829	#if !HAVE_READDIR_R	1028	#if !HAVE_READDIR_R
830	pthread_mutex_unlock (&readdirlock);	1029	UNLOCK (readdirlock);
831	#endif	1030	#endif
832	#if !HAVE_PREADWRITE	1031	#if !HAVE_PREADWRITE
833	pthread_mutex_unlock (&preadwritelock);	1032	UNLOCK (preadwritelock);
834	#endif	1033	#endif
835	pthread_mutex_unlock (&reslock);	1034	UNLOCK (reslock);
836	pthread_mutex_unlock (&reqlock);	1035	UNLOCK (reqlock);
		1036	UNLOCK (wrklock);
837	}	1037	}
838		1038
839	static void atfork_child (void)	1039	static void atfork_child (void)
840	{	1040	{
841	aio_req prv;	1041	aio_req prv;
842		1042
		1043	while (prv = reqq_shift (&req_queue))
		1044	req_free (prv);
		1045
		1046	while (prv = reqq_shift (&res_queue))
		1047	req_free (prv);
		1048
		1049	while (wrk_first.next != &wrk_first)
		1050	{
		1051	worker *wrk = wrk_first.next;
		1052
		1053	if (wrk->req)
		1054	req_free (wrk->req);
		1055
		1056	worker_clear (wrk);
		1057	worker_free (wrk);
		1058	}
		1059
843	started = 0;	1060	started = 0;
844		1061	nreqs = 0;
845	while (reqs)
846	{
847	prv = reqs;
848	reqs = prv->next;
849	req_free (prv);
850	}
851
852	reqs = reqe = 0;
853
854	while (ress)
855	{
856	prv = ress;
857	ress = prv->next;
858	req_free (prv);
859	}
860
861	ress = rese = 0;
862		1062
863	close (respipe [0]);	1063	close (respipe [0]);
864	close (respipe [1]);	1064	close (respipe [1]);
865	create_pipe ();	1065	create_pipe ();
866		1066
867	atfork_parent ();	1067	atfork_parent ();
868	}	1068	}
869		1069
870	#define dREQ \	1070	#define dREQ \
871	aio_req req; \	1071	aio_req req; \
		1072	int req_pri = next_pri; \
		1073	next_pri = DEFAULT_PRI + PRI_BIAS; \
872	\	1074	\
873	if (SvOK (callback) && !SvROK (callback)) \	1075	if (SvOK (callback) && !SvROK (callback)) \
874	croak ("callback must be undef or of reference type"); \	1076	croak ("callback must be undef or of reference type"); \
875	\	1077	\
876	Newz (0, req, 1, aio_cb); \	1078	Newz (0, req, 1, aio_cb); \
877	if (!req) \	1079	if (!req) \
878	croak ("out of memory during aio_req allocation"); \	1080	croak ("out of memory during aio_req allocation"); \
879	\	1081	\
880	req->callback = newSVsv (callback)	1082	req->callback = newSVsv (callback); \
		1083	req->pri = req_pri
881		1084
882	#define REQ_SEND \	1085	#define REQ_SEND \
883	req_send (req); \	1086	req_send (req); \
884	\	1087	\
885	if (GIMME_V != G_VOID) \	1088	if (GIMME_V != G_VOID) \
…		…
907		1110
908	void	1111	void
909	max_parallel (nthreads)	1112	max_parallel (nthreads)
910	int nthreads	1113	int nthreads
911	PROTOTYPE: $	1114	PROTOTYPE: $
912
913	int
914	max_outstanding (nreqs)
915	int nreqs
916	PROTOTYPE: $
917	CODE:
918	RETVAL = max_outstanding;
919	max_outstanding = nreqs;
920		1115
921	void	1116	void
922	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	1117	aio_open (pathname,flags,mode,callback=&PL_sv_undef)
923	SV * pathname	1118	SV * pathname
924	int flags	1119	int flags
…		…
1139		1334
1140	REQ_SEND;	1335	REQ_SEND;
1141	}	1336	}
1142		1337
1143	void	1338	void
1144	aio_sleep (delay,callback=&PL_sv_undef)	1339	aio_busy (delay,callback=&PL_sv_undef)
1145	double delay	1340	double delay
1146	SV * callback	1341	SV * callback
1147	PPCODE:	1342	PPCODE:
1148	{	1343	{
1149	dREQ;	1344	dREQ;
1150		1345
1151	req->type = REQ_SLEEP;	1346	req->type = REQ_BUSY;
1152	req->fd = delay < 0. ? 0 : delay;	1347	req->fd = delay < 0. ? 0 : delay;
1153	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1348	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
1154		1349
1155	REQ_SEND;	1350	REQ_SEND;
1156	}	1351	}
…		…
1160	SV * callback	1355	SV * callback
1161	PROTOTYPE: ;$	1356	PROTOTYPE: ;$
1162	PPCODE:	1357	PPCODE:
1163	{	1358	{
1164	dREQ;	1359	dREQ;
		1360
1165	req->type = REQ_GROUP;	1361	req->type = REQ_GROUP;
1166	req->grp_next = req;
1167	req->grp_prev = req;
1168
1169	req_send (req);	1362	req_send (req);
		1363
1170	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1364	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1171	}	1365	}
		1366
		1367	void
		1368	aio_nop (callback=&PL_sv_undef)
		1369	SV * callback
		1370	PPCODE:
		1371	{
		1372	dREQ;
		1373
		1374	req->type = REQ_NOP;
		1375
		1376	REQ_SEND;
		1377	}
		1378
		1379	void
		1380	aioreq_pri (int pri = DEFAULT_PRI)
		1381	CODE:
		1382	if (pri < PRI_MIN) pri = PRI_MIN;
		1383	if (pri > PRI_MAX) pri = PRI_MAX;
		1384	next_pri = pri + PRI_BIAS;
		1385
		1386	void
		1387	aioreq_nice (int nice = 0)
		1388	CODE:
		1389	nice = next_pri - nice;
		1390	if (nice < PRI_MIN) nice = PRI_MIN;
		1391	if (nice > PRI_MAX) nice = PRI_MAX;
		1392	next_pri = nice + PRI_BIAS;
1172		1393
1173	void	1394	void
1174	flush ()	1395	flush ()
1175	PROTOTYPE:	1396	PROTOTYPE:
1176	CODE:	1397	CODE:
1177	while (nreqs)	1398	while (nreqs)
1178	{	1399	{
1179	poll_wait ();	1400	poll_wait ();
1180	poll_cb ();	1401	poll_cb (0);
1181	}	1402	}
1182		1403
1183	void	1404	void
1184	poll()	1405	poll()
1185	PROTOTYPE:	1406	PROTOTYPE:
1186	CODE:	1407	CODE:
1187	if (nreqs)	1408	if (nreqs)
1188	{	1409	{
1189	poll_wait ();	1410	poll_wait ();
1190	poll_cb ();	1411	poll_cb (0);
1191	}	1412	}
1192		1413
1193	int	1414	int
1194	poll_fileno()	1415	poll_fileno()
1195	PROTOTYPE:	1416	PROTOTYPE:
…		…
1200		1421
1201	int	1422	int
1202	poll_cb(...)	1423	poll_cb(...)
1203	PROTOTYPE:	1424	PROTOTYPE:
1204	CODE:	1425	CODE:
1205	RETVAL = poll_cb ();	1426	RETVAL = poll_cb (0);
		1427	OUTPUT:
		1428	RETVAL
		1429
		1430	int
		1431	poll_some(int max = 0)
		1432	PROTOTYPE: $
		1433	CODE:
		1434	RETVAL = poll_cb (max);
1206	OUTPUT:	1435	OUTPUT:
1207	RETVAL	1436	RETVAL
1208		1437
1209	void	1438	void
1210	poll_wait()	1439	poll_wait()
…		…
1225		1454
1226	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1455	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1227		1456
1228	void	1457	void
1229	cancel (aio_req_ornot req)	1458	cancel (aio_req_ornot req)
1230	PROTOTYPE:
1231	CODE:	1459	CODE:
1232	req_cancel (req);	1460	req_cancel (req);
1233		1461
		1462	void
		1463	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
		1464	CODE:
		1465	SvREFCNT_dec (req->callback);
		1466	req->callback = newSVsv (callback);
		1467
1234	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1468	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1235		1469
1236	void	1470	void
1237	add (aio_req grp, ...)	1471	add (aio_req grp, ...)
1238	PPCODE:	1472	PPCODE:
1239	{	1473	{
1240	int i;	1474	int i;
		1475	aio_req req;
		1476
		1477	if (grp->fd == 2)
		1478	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1241		1479
1242	for (i = 1; i < items; ++i )	1480	for (i = 1; i < items; ++i )
1243	{	1481	{
1244	if (GIMME_V != G_VOID)	1482	if (GIMME_V != G_VOID)
1245	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1483	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1246		1484
1247	aio_req req = SvAIO_REQ (ST (i));	1485	req = SvAIO_REQ (ST (i));
1248		1486
1249	if (req)	1487	if (req)
1250	{	1488	{
1251	req->grp_prev = grp;	1489	++grp->length;
1252	req->grp_next = grp->grp_next;
1253	grp->grp_next->grp_prev = req;
1254	grp->grp_next = req;
1255
1256	req->grp = grp;	1490	req->grp = grp;
		1491
		1492	req->grp_prev = 0;
		1493	req->grp_next = grp->grp_first;
		1494
		1495	if (grp->grp_first)
		1496	grp->grp_first->grp_prev = req;
		1497
		1498	grp->grp_first = req;
1257	}	1499	}
1258	}	1500	}
1259	}	1501	}
1260		1502
1261	void	1503	void
		1504	cancel_subs (aio_req_ornot req)
		1505	CODE:
		1506	req_cancel_subs (req);
		1507
		1508	void
1262	result (aio_req grp, ...)	1509	result (aio_req grp, ...)
		1510	CODE:
		1511	{
		1512	int i;
		1513	AV *av = newAV ();
		1514
		1515	for (i = 1; i < items; ++i )
		1516	av_push (av, newSVsv (ST (i)));
		1517
		1518	SvREFCNT_dec (grp->data);
		1519	grp->data = (SV *)av;
		1520	}
		1521
		1522	void
		1523	limit (aio_req grp, int limit)
1263	CODE:	1524	CODE:
1264	{	1525	grp->fd2 = limit;
1265	int i;	1526	aio_grp_feed (grp);
1266	AV *av = newAV ();
1267		1527
1268	if (grp->data)	1528	void
		1529	feed (aio_req grp, SV *callback=&PL_sv_undef)
		1530	CODE:
		1531	{
1269	SvREFCNT_dec (grp->data);	1532	SvREFCNT_dec (grp->fh2);
		1533	grp->fh2 = newSVsv (callback);
1270		1534
1271	for (i = 1; i < items; ++i )	1535	if (grp->fd2 <= 0)
1272	av_push (av, newSVsv (ST (i)));	1536	grp->fd2 = 2;
1273		1537
1274	grp->data = (SV *)av;	1538	aio_grp_feed (grp);
1275	}	1539	}
1276		1540

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Comparing IO-AIO/AIO.xs (file contents): Revision 1.48 by root, Sun Oct 22 10:33:19 2006 UTC vs. Revision 1.76 by root, Thu Oct 26 12:38:04 2006 UTC

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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.48 by root, Sun Oct 22 10:33:19 2006 UTC vs.
Revision 1.76 by root, Thu Oct 26 12:38:04 2006 UTC