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

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.43 by root, Sat Oct 21 23:06:04 2006 UTC vs.
Revision 1.75 by root, Thu Oct 26 06:44:48 2006 UTC

…		…
		1	/* solaris */
		2	#define _POSIX_PTHREAD_SEMANTICS 1
		3
		4	#if __linux
		5	# define _GNU_SOURCE
		6	#endif
		7
1	#define _REENTRANT 1	8	#define _REENTRANT 1
		9
2	#include <errno.h>	10	#include <errno.h>
3		11
4	#include "EXTERN.h"	12	#include "EXTERN.h"
5	#include "perl.h"	13	#include "perl.h"
6	#include "XSUB.h"	14	#include "XSUB.h"
9		17
10	#include <pthread.h>	18	#include <pthread.h>
11		19
12	#include <stddef.h>	20	#include <stddef.h>
13	#include <errno.h>	21	#include <errno.h>
		22	#include <sys/time.h>
		23	#include <sys/select.h>
14	#include <sys/types.h>	24	#include <sys/types.h>
15	#include <sys/stat.h>	25	#include <sys/stat.h>
16	#include <limits.h>	26	#include <limits.h>
17	#include <unistd.h>	27	#include <unistd.h>
18	#include <fcntl.h>	28	#include <fcntl.h>
…		…
37	/* used for struct dirent, AIX doesn't provide it */	47	/* used for struct dirent, AIX doesn't provide it */
38	#ifndef NAME_MAX	48	#ifndef NAME_MAX
39	# define NAME_MAX 4096	49	# define NAME_MAX 4096
40	#endif	50	#endif
41		51
		52	#ifndef PTHREAD_STACK_MIN
		53	/* care for broken platforms, e.g. windows */
		54	# define PTHREAD_STACK_MIN 16384
		55	#endif
		56
42	#if __ia64	57	#if __ia64
43	# define STACKSIZE 65536	58	# define STACKSIZE 65536
		59	#elif __i386 \|\| __x86_64 /* 16k is unreasonably high :( */
		60	# define STACKSIZE PTHREAD_STACK_MIN
44	#else	61	#else
45	# define STACKSIZE 8192	62	# define STACKSIZE 16384
46	#endif	63	#endif
		64
		65	/* buffer size for various temporary buffers */
		66	#define AIO_BUFSIZE 65536
		67
		68	#define dBUF \
		69	char *aio_buf; \
		70	LOCK (wrklock); \
		71	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
		72	UNLOCK (wrklock); \
		73	if (!aio_buf) \
		74	return -1;
47		75
48	enum {	76	enum {
49	REQ_QUIT,	77	REQ_QUIT,
50	REQ_OPEN, REQ_CLOSE,	78	REQ_OPEN, REQ_CLOSE,
51	REQ_READ, REQ_WRITE, REQ_READAHEAD,	79	REQ_READ, REQ_WRITE, REQ_READAHEAD,
…		…
53	REQ_STAT, REQ_LSTAT, REQ_FSTAT,	81	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
54	REQ_FSYNC, REQ_FDATASYNC,	82	REQ_FSYNC, REQ_FDATASYNC,
55	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,	83	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
56	REQ_READDIR,	84	REQ_READDIR,
57	REQ_LINK, REQ_SYMLINK,	85	REQ_LINK, REQ_SYMLINK,
		86	REQ_GROUP, REQ_NOP,
		87	REQ_BUSY,
58	};	88	};
59		89
60	#define AIO_CB_KLASS "IO::AIO::CB"	90	#define AIO_REQ_KLASS "IO::AIO::REQ"
		91	#define AIO_GRP_KLASS "IO::AIO::GRP"
61		92
62	typedef struct aio_cb	93	typedef struct aio_cb
63	{	94	{
64	struct aio_cb grp_prev, grp_next;
65	struct aio_grp *grp;
66
67	struct aio_cb *volatile next;	95	struct aio_cb *volatile next;
68
69	SV self; / the perl counterpart of this request, if any */
70		96
71	SV data, callback;	97	SV data, callback;
72	SV fh, fh2;	98	SV fh, fh2;
73	void dataptr, data2ptr;	99	void dataptr, data2ptr;
74	Stat_t *statdata;	100	Stat_t *statdata;
75	off_t offset;	101	off_t offset;
76	size_t length;	102	size_t length;
77	ssize_t result;	103	ssize_t result;
78		104
		105	STRLEN dataoffset;
79	int type;	106	int type;
80	int fd, fd2;	107	int fd, fd2;
81	int errorno;	108	int errorno;
82	STRLEN dataoffset;
83	mode_t mode; /* open */	109	mode_t mode; /* open */
		110
84	unsigned char cancelled;	111	unsigned char flags;
		112	unsigned char pri;
		113
		114	SV self; / the perl counterpart of this request, if any */
		115	struct aio_cb grp, grp_prev, grp_next, grp_first;
85	} aio_cb;	116	} aio_cb;
		117
		118	enum {
		119	FLAG_CANCELLED = 0x01,
		120	};
86		121
87	typedef aio_cb *aio_req;	122	typedef aio_cb *aio_req;
88	typedef aio_cb *aio_req_ornot;	123	typedef aio_cb *aio_req_ornot;
89		124
		125	enum {
		126	PRI_MIN = -4,
		127	PRI_MAX = 4,
		128
		129	DEFAULT_PRI = 0,
		130	PRI_BIAS = -PRI_MIN,
		131	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
		132	};
		133
		134	static int next_pri = DEFAULT_PRI + PRI_BIAS;
		135
90	static int started, wanted;	136	static int started, wanted;
91	static volatile int nreqs;	137	static volatile int nreqs;
92	static int max_outstanding = 1<<30;
93	static int respipe [2];	138	static int respipe [2];
94		139
		140	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
		141	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
		142	#else
		143	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
		144	#endif
		145
		146	#define LOCK(mutex) pthread_mutex_lock (&(mutex))
		147	#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
		148
		149	/* worker threasd management */
		150	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
		151
		152	typedef struct worker {
		153	/* locked by wrklock */
		154	struct worker prev, next;
		155
		156	pthread_t tid;
		157
		158	/* locked by reslock, reqlock or wrklock */
		159	aio_req req; /* currently processed request */
		160	void *dbuf;
		161	DIR *dirp;
		162	} worker;
		163
		164	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
		165
		166	static void worker_clear (worker *wrk)
		167	{
		168	if (wrk->dirp)
		169	{
		170	closedir (wrk->dirp);
		171	wrk->dirp = 0;
		172	}
		173
		174	if (wrk->dbuf)
		175	{
		176	free (wrk->dbuf);
		177	wrk->dbuf = 0;
		178	}
		179	}
		180
		181	static void worker_free (worker *wrk)
		182	{
		183	wrk->next->prev = wrk->prev;
		184	wrk->prev->next = wrk->next;
		185
		186	free (wrk);
		187	}
		188
95	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	189	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
96	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;	190	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
97	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	191	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
98		192
99	static volatile aio_req reqs, reqe; /* queue start, queue end */	193	/*
100	static volatile aio_req ress, rese; /* queue start, queue end */	194	* a somewhat faster data structure might be nice, but
101		195	* with 8 priorities this actually needs <20 insns
		196	* per shift, the most expensive operation.
		197	*/
102	typedef struct aio_grp	198	typedef struct {
103	{	199	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
104	struct aio_cb first, last;	200	int size;
105	SV *callback;	201	} reqq;
106	int busycount;
107	} aio_grp;
108		202
109	static void aio_grp_begin (aio_grp *grp)	203	static reqq req_queue;
110	{	204	static reqq res_queue;
111	++grp->busycount;
112	}
113		205
114	static void aio_grp_end (aio_grp *grp)	206	int reqq_push (reqq *q, aio_req req)
115	{	207	{
116	--grp->busycount;	208	int pri = req->pri;
		209	req->next = 0;
117		210
118	if (grp->busycount)	211	if (q->qe[pri])
		212	{
		213	q->qe[pri]->next = req;
		214	q->qe[pri] = req;
		215	}
		216	else
		217	q->qe[pri] = q->qs[pri] = req;
		218
		219	return q->size++;
		220	}
		221
		222	aio_req reqq_shift (reqq *q)
		223	{
		224	int pri;
		225
		226	if (!q->size)
119	return;	227	return 0;
120		228
121	SvREFCNT_dec (grp->callback);	229	--q->size;
122	grp->callback = 0;
123	}
124		230
125	static aio_grp *aio_grp_new ()	231	for (pri = NUM_PRI; pri--; )
126	{	232	{
127	aio_grp *grp;	233	aio_req req = q->qs[pri];
128		234
129	Newz (0, grp, 1, aio_grp);	235	if (req)
130	aio_grp_begin (grp);	236	{
		237	if (!(q->qs[pri] = req->next))
		238	q->qe[pri] = 0;
131		239
132	return grp;	240	return req;
		241	}
		242	}
		243
		244	abort ();
133	}	245	}
		246
		247	static int poll_cb ();
		248	static void req_invoke (aio_req req);
		249	static void req_free (aio_req req);
		250	static void req_cancel (aio_req req);
134		251
135	/* must be called at most once */	252	/* must be called at most once */
136	static SV *req_sv (aio_req req)	253	static SV req_sv (aio_req req, const char klass)
137	{	254	{
		255	if (!req->self)
		256	{
138	req->self = (SV *)newHV ();	257	req->self = (SV *)newHV ();
139	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	258	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
		259	}
140		260
141	return sv_bless (newRV_noinc (req->self), gv_stashpv (AIO_CB_KLASS, 1));	261	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));
142	}	262	}
143		263
144	static aio_req SvAIO_REQ (SV *sv)	264	static aio_req SvAIO_REQ (SV *sv)
145	{	265	{
		266	MAGIC *mg;
		267
146	if (!sv_derived_from (sv, AIO_CB_KLASS) \|\| !SvROK (sv))	268	if (!sv_derived_from (sv, AIO_REQ_KLASS) \|\| !SvROK (sv))
147	croak ("object of class " AIO_CB_KLASS " expected");	269	croak ("object of class " AIO_REQ_KLASS " expected");
148		270
149	MAGIC *mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	271	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
150		272
151	return mg ? (aio_req)mg->mg_ptr : 0;	273	return mg ? (aio_req)mg->mg_ptr : 0;
		274	}
		275
		276	static void aio_grp_feed (aio_req grp)
		277	{
		278	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))
		279	{
		280	int old_len = grp->length;
		281
		282	if (grp->fh2 && SvOK (grp->fh2))
		283	{
		284	dSP;
		285
		286	ENTER;
		287	SAVETMPS;
		288	PUSHMARK (SP);
		289	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
		290	PUTBACK;
		291	call_sv (grp->fh2, G_VOID \| G_EVAL \| G_KEEPERR);
		292	SPAGAIN;
		293	FREETMPS;
		294	LEAVE;
		295	}
		296
		297	/* stop if no progress has been made */
		298	if (old_len == grp->length)
		299	{
		300	SvREFCNT_dec (grp->fh2);
		301	grp->fh2 = 0;
		302	break;
		303	}
		304	}
		305	}
		306
		307	static void aio_grp_dec (aio_req grp)
		308	{
		309	--grp->length;
		310
		311	/* call feeder, if applicable */
		312	aio_grp_feed (grp);
		313
		314	/* finish, if done */
		315	if (!grp->length && grp->fd)
		316	{
		317	req_invoke (grp);
		318	req_free (grp);
		319	}
		320	}
		321
		322	static void poll_wait ()
		323	{
		324	fd_set rfd;
		325
		326	while (nreqs)
		327	{
		328	int size;
		329	#if !(__i386 \|\| __x86_64) /* safe without sempahore on these archs */
		330	LOCK (reslock);
		331	#endif
		332	size = res_queue.size;
		333	#if !(__i386 \|\| __x86_64) /* safe without sempahore on these archs */
		334	UNLOCK (reslock);
		335	#endif
		336
		337	if (size)
		338	return;
		339
		340	FD_ZERO(&rfd);
		341	FD_SET(respipe [0], &rfd);
		342
		343	select (respipe [0] + 1, &rfd, 0, 0, 0);
		344	}
		345	}
		346
		347	static void req_invoke (aio_req req)
		348	{
		349	dSP;
		350
		351	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
		352	{
		353	errno = req->errorno;
		354
		355	ENTER;
		356	SAVETMPS;
		357	PUSHMARK (SP);
		358	EXTEND (SP, 1);
		359
		360	switch (req->type)
		361	{
		362	case REQ_READDIR:
		363	{
		364	SV *rv = &PL_sv_undef;
		365
		366	if (req->result >= 0)
		367	{
		368	int i;
		369	char *buf = req->data2ptr;
		370	AV *av = newAV ();
		371
		372	av_extend (av, req->result - 1);
		373
		374	for (i = 0; i < req->result; ++i)
		375	{
		376	SV *sv = newSVpv (buf, 0);
		377
		378	av_store (av, i, sv);
		379	buf += SvCUR (sv) + 1;
		380	}
		381
		382	rv = sv_2mortal (newRV_noinc ((SV *)av));
		383	}
		384
		385	PUSHs (rv);
		386	}
		387	break;
		388
		389	case REQ_OPEN:
		390	{
		391	/* convert fd to fh */
		392	SV *fh;
		393
		394	PUSHs (sv_2mortal (newSViv (req->result)));
		395	PUTBACK;
		396	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);
		397	SPAGAIN;
		398
		399	fh = SvREFCNT_inc (POPs);
		400
		401	PUSHMARK (SP);
		402	XPUSHs (sv_2mortal (fh));
		403	}
		404	break;
		405
		406	case REQ_GROUP:
		407	req->fd = 2; /* mark group as finished */
		408
		409	if (req->data)
		410	{
		411	int i;
		412	AV av = (AV )req->data;
		413
		414	EXTEND (SP, AvFILL (av) + 1);
		415	for (i = 0; i <= AvFILL (av); ++i)
		416	PUSHs (*av_fetch (av, i, 0));
		417	}
		418	break;
		419
		420	case REQ_NOP:
		421	case REQ_BUSY:
		422	break;
		423
		424	default:
		425	PUSHs (sv_2mortal (newSViv (req->result)));
		426	break;
		427	}
		428
		429
		430	PUTBACK;
		431	call_sv (req->callback, G_VOID \| G_EVAL);
		432	SPAGAIN;
		433
		434	FREETMPS;
		435	LEAVE;
		436	}
		437
		438	if (req->grp)
		439	{
		440	aio_req grp = req->grp;
		441
		442	/* unlink request */
		443	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
		444	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
		445
		446	if (grp->grp_first == req)
		447	grp->grp_first = req->grp_next;
		448
		449	aio_grp_dec (grp);
		450	}
		451
		452	if (SvTRUE (ERRSV))
		453	{
		454	req_free (req);
		455	croak (0);
		456	}
152	}	457	}
153		458
154	static void req_free (aio_req req)	459	static void req_free (aio_req req)
155	{	460	{
156	if (req->self)	461	if (req->self)
157	{	462	{
158	sv_unmagic (req->self, PERL_MAGIC_ext);	463	sv_unmagic (req->self, PERL_MAGIC_ext);
159	SvREFCNT_dec (req->self);	464	SvREFCNT_dec (req->self);
160	}	465	}
161		466
162	if (req->data)
163	SvREFCNT_dec (req->data);	467	SvREFCNT_dec (req->data);
164
165	if (req->fh)
166	SvREFCNT_dec (req->fh);	468	SvREFCNT_dec (req->fh);
167
168	if (req->fh2)
169	SvREFCNT_dec (req->fh2);	469	SvREFCNT_dec (req->fh2);
170
171	if (req->statdata)
172	Safefree (req->statdata);
173
174	if (req->callback)
175	SvREFCNT_dec (req->callback);	470	SvREFCNT_dec (req->callback);
		471	Safefree (req->statdata);
176		472
177	if (req->type == REQ_READDIR && req->result >= 0)	473	if (req->type == REQ_READDIR)
178	free (req->data2ptr);	474	free (req->data2ptr);
179		475
180	Safefree (req);	476	Safefree (req);
181	}	477	}
182		478
183	static void	479	static void req_cancel_subs (aio_req grp)
184	poll_wait ()
185	{	480	{
186	if (nreqs && !ress)	481	aio_req sub;
187	{
188	fd_set rfd;
189	FD_ZERO(&rfd);
190	FD_SET(respipe [0], &rfd);
191		482
192	select (respipe [0] + 1, &rfd, 0, 0, 0);	483	if (grp->type != REQ_GROUP)
193	}	484	return;
194	}
195		485
196	static int	486	SvREFCNT_dec (grp->fh2);
197	poll_cb ()	487	grp->fh2 = 0;
		488
		489	for (sub = grp->grp_first; sub; sub = sub->grp_next)
		490	req_cancel (sub);
		491	}
		492
		493	static void req_cancel (aio_req req)
		494	{
		495	req->flags \|= FLAG_CANCELLED;
		496
		497	req_cancel_subs (req);
		498	}
		499
		500	static int poll_cb ()
198	{	501	{
199	dSP;	502	dSP;
200	int count = 0;	503	int count = 0;
201	int do_croak = 0;	504	int do_croak = 0;
202	aio_req req;	505	aio_req req;
203		506
204	for (;;)	507	for (;;)
205	{	508	{
206	pthread_mutex_lock (&reslock);	509	LOCK (reslock);
207	req = ress;	510	req = reqq_shift (&res_queue);
208		511
209	if (req)	512	if (req)
210	{	513	{
211	ress = req->next;
212
213	if (!ress)	514	if (!res_queue.size)
214	{	515	{
215	/* read any signals sent by the worker threads */	516	/* read any signals sent by the worker threads */
216	char buf [32];	517	char buf [32];
217	while (read (respipe [0], buf, 32) == 32)	518	while (read (respipe [0], buf, 32) == 32)
218	;	519	;
219
220	rese = 0;
221	}	520	}
222	}	521	}
223		522
224	pthread_mutex_unlock (&reslock);	523	UNLOCK (reslock);
225		524
226	if (!req)	525	if (!req)
227	break;	526	break;
228		527
229	nreqs--;	528	--nreqs;
230		529
231	if (req->type == REQ_QUIT)	530	if (req->type == REQ_QUIT)
232	started--;	531	started--;
		532	else if (req->type == REQ_GROUP && req->length)
		533	{
		534	req->fd = 1; /* mark request as delayed */
		535	continue;
		536	}
233	else	537	else
234	{	538	{
235	int errorno = errno;
236	errno = req->errorno;
237
238	if (req->type == REQ_READ)	539	if (req->type == REQ_READ)
239	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));	540	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
240		541
241	if (req->data2ptr && (req->type == REQ_READ \|\| req->type == REQ_WRITE))	542	if (req->data2ptr && (req->type == REQ_READ \|\| req->type == REQ_WRITE))
242	SvREADONLY_off (req->data);	543	SvREADONLY_off (req->data);
…		…
246	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	547	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
247	PL_laststatval = req->result;	548	PL_laststatval = req->result;
248	PL_statcache = *(req->statdata);	549	PL_statcache = *(req->statdata);
249	}	550	}
250		551
251	ENTER;	552	req_invoke (req);
252	PUSHMARK (SP);
253		553
254	if (req->type == REQ_READDIR)
255	{
256	SV *rv = &PL_sv_undef;
257
258	if (req->result >= 0)
259	{
260	char *buf = req->data2ptr;
261	AV *av = newAV ();
262
263	while (req->result)
264	{
265	SV *sv = newSVpv (buf, 0);
266
267	av_push (av, sv);
268	buf += SvCUR (sv) + 1;
269	req->result--;
270	}
271
272	rv = sv_2mortal (newRV_noinc ((SV *)av));
273	}
274
275	XPUSHs (rv);
276	}
277	else
278	{
279	XPUSHs (sv_2mortal (newSViv (req->result)));
280
281	if (req->type == REQ_OPEN)
282	{
283	/* convert fd to fh */
284	SV *fh;
285
286	PUTBACK;
287	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);
288	SPAGAIN;
289
290	fh = SvREFCNT_inc (POPs);
291
292	PUSHMARK (SP);
293	XPUSHs (sv_2mortal (fh));
294	}
295	}
296
297	if (SvOK (req->callback) && !req->cancelled)
298	{
299	PUTBACK;
300	call_sv (req->callback, G_VOID \| G_EVAL);
301	SPAGAIN;
302
303	if (SvTRUE (ERRSV))
304	{
305	req_free (req);
306	croak (0);
307	}
308	}
309
310	LEAVE;
311
312	errno = errorno;
313	count++;	554	count++;
314	}	555	}
315		556
316	req_free (req);	557	req_free (req);
317	}	558	}
…		…
319	return count;	560	return count;
320	}	561	}
321		562
322	static void aio_proc(void arg);	563	static void aio_proc(void arg);
323		564
324	static void
325	start_thread (void)	565	static void start_thread (void)
326	{	566	{
327	sigset_t fullsigset, oldsigset;	567	sigset_t fullsigset, oldsigset;
328	pthread_t tid;
329	pthread_attr_t attr;	568	pthread_attr_t attr;
		569
		570	worker *wrk = calloc (1, sizeof (worker));
		571
		572	if (!wrk)
		573	croak ("unable to allocate worker thread data");
330		574
331	pthread_attr_init (&attr);	575	pthread_attr_init (&attr);
332	pthread_attr_setstacksize (&attr, STACKSIZE);	576	pthread_attr_setstacksize (&attr, STACKSIZE);
333	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);	577	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
334		578
335	sigfillset (&fullsigset);	579	sigfillset (&fullsigset);
		580
		581	LOCK (wrklock);
336	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);	582	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
337		583
338	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)	584	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
		585	{
		586	wrk->prev = &wrk_first;
		587	wrk->next = wrk_first.next;
		588	wrk_first.next->prev = wrk;
		589	wrk_first.next = wrk;
339	started++;	590	started++;
		591	}
		592	else
		593	free (wrk);
340		594
341	sigprocmask (SIG_SETMASK, &oldsigset, 0);	595	sigprocmask (SIG_SETMASK, &oldsigset, 0);
		596	UNLOCK (wrklock);
342	}	597	}
343		598
344	static void
345	req_send (aio_req req)	599	static void req_send (aio_req req)
346	{	600	{
347	while (started < wanted && nreqs >= started)	601	while (started < wanted && nreqs >= started)
348	start_thread ();	602	start_thread ();
349		603
350	nreqs++;	604	++nreqs;
351		605
352	pthread_mutex_lock (&reqlock);	606	LOCK (reqlock);
353		607	reqq_push (&req_queue, req);
354	req->next = 0;
355
356	if (reqe)
357	{
358	reqe->next = req;
359	reqe = req;
360	}
361	else
362	reqe = reqs = req;
363
364	pthread_cond_signal (&reqwait);	608	pthread_cond_signal (&reqwait);
365	pthread_mutex_unlock (&reqlock);	609	UNLOCK (reqlock);
366
367	if (nreqs > max_outstanding)
368	for (;;)
369	{
370	poll_cb ();
371
372	if (nreqs <= max_outstanding)
373	break;
374
375	poll_wait ();
376	}
377	}	610	}
378		611
379	static void	612	static void end_thread (void)
380	end_thread (void)
381	{	613	{
382	aio_req req;	614	aio_req req;
		615
383	Newz (0, req, 1, aio_cb);	616	Newz (0, req, 1, aio_cb);
		617
384	req->type = REQ_QUIT;	618	req->type = REQ_QUIT;
		619	req->pri = PRI_MAX + PRI_BIAS;
385		620
386	req_send (req);	621	req_send (req);
387	}	622	}
388		623
389	static void min_parallel (int nthreads)	624	static void min_parallel (int nthreads)
…		…
436	* normal read/write by using a mutex. slows down execution a lot,	671	* normal read/write by using a mutex. slows down execution a lot,
437	* but that's your problem, not mine.	672	* but that's your problem, not mine.
438	*/	673	*/
439	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;	674	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
440		675
441	static ssize_t	676	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
442	pread (int fd, void *buf, size_t count, off_t offset)
443	{	677	{
444	ssize_t res;	678	ssize_t res;
445	off_t ooffset;	679	off_t ooffset;
446		680
447	pthread_mutex_lock (&preadwritelock);	681	LOCK (preadwritelock);
448	ooffset = lseek (fd, 0, SEEK_CUR);	682	ooffset = lseek (fd, 0, SEEK_CUR);
449	lseek (fd, offset, SEEK_SET);	683	lseek (fd, offset, SEEK_SET);
450	res = read (fd, buf, count);	684	res = read (fd, buf, count);
451	lseek (fd, ooffset, SEEK_SET);	685	lseek (fd, ooffset, SEEK_SET);
452	pthread_mutex_unlock (&preadwritelock);	686	UNLOCK (preadwritelock);
453		687
454	return res;	688	return res;
455	}	689	}
456		690
457	static ssize_t
458	pwrite (int fd, void *buf, size_t count, off_t offset)	691	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
459	{	692	{
460	ssize_t res;	693	ssize_t res;
461	off_t ooffset;	694	off_t ooffset;
462		695
463	pthread_mutex_lock (&preadwritelock);	696	LOCK (preadwritelock);
464	ooffset = lseek (fd, 0, SEEK_CUR);	697	ooffset = lseek (fd, 0, SEEK_CUR);
465	lseek (fd, offset, SEEK_SET);	698	lseek (fd, offset, SEEK_SET);
466	res = write (fd, buf, count);	699	res = write (fd, buf, count);
467	lseek (fd, offset, SEEK_SET);	700	lseek (fd, offset, SEEK_SET);
468	pthread_mutex_unlock (&preadwritelock);	701	UNLOCK (preadwritelock);
469		702
470	return res;	703	return res;
471	}	704	}
472	#endif	705	#endif
473		706
474	#if !HAVE_FDATASYNC	707	#if !HAVE_FDATASYNC
475	# define fdatasync fsync	708	# define fdatasync fsync
476	#endif	709	#endif
477		710
478	#if !HAVE_READAHEAD	711	#if !HAVE_READAHEAD
479	# define readahead aio_readahead	712	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
480		713
481	static ssize_t	714	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
482	readahead (int fd, off_t offset, size_t count)
483	{	715	{
484	char readahead_buf[4096];	716	dBUF;
485		717
486	while (count > 0)	718	while (count > 0)
487	{	719	{
488	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);	720	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
489		721
490	pread (fd, readahead_buf, len, offset);	722	pread (fd, aio_buf, len, offset);
491	offset += len;	723	offset += len;
492	count -= len;	724	count -= len;
493	}	725	}
494		726
495	errno = 0;	727	errno = 0;
496	}	728	}
		729
497	#endif	730	#endif
498		731
499	#if !HAVE_READDIR_R	732	#if !HAVE_READDIR_R
500	# define readdir_r aio_readdir_r	733	# define readdir_r aio_readdir_r
501		734
502	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;	735	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
503		736
504	static int
505	readdir_r (DIR dirp, struct dirent ent, struct dirent **res)	737	static int readdir_r (DIR dirp, struct dirent ent, struct dirent **res)
506	{	738	{
507	struct dirent *e;	739	struct dirent *e;
508	int errorno;	740	int errorno;
509		741
510	pthread_mutex_lock (&readdirlock);	742	LOCK (readdirlock);
511		743
512	e = readdir (dirp);	744	e = readdir (dirp);
513	errorno = errno;	745	errorno = errno;
514		746
515	if (e)	747	if (e)
…		…
518	strcpy (ent->d_name, e->d_name);	750	strcpy (ent->d_name, e->d_name);
519	}	751	}
520	else	752	else
521	*res = 0;	753	*res = 0;
522		754
523	pthread_mutex_unlock (&readdirlock);	755	UNLOCK (readdirlock);
524		756
525	errno = errorno;	757	errno = errorno;
526	return e ? 0 : -1;	758	return e ? 0 : -1;
527	}	759	}
528	#endif	760	#endif
529		761
530	/* sendfile always needs emulation */	762	/* sendfile always needs emulation */
531	static ssize_t
532	sendfile_ (int ofd, int ifd, off_t offset, size_t count)	763	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
533	{	764	{
534	ssize_t res;	765	ssize_t res;
535		766
536	if (!count)	767	if (!count)
537	return 0;	768	return 0;
…		…
586	#endif	817	#endif
587	)	818	)
588	)	819	)
589	{	820	{
590	/* emulate sendfile. this is a major pain in the ass */	821	/* emulate sendfile. this is a major pain in the ass */
591	char buf[4096];	822	dBUF;
		823
592	res = 0;	824	res = 0;
593		825
594	while (count)	826	while (count)
595	{	827	{
596	ssize_t cnt;	828	ssize_t cnt;
597		829
598	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);	830	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
599		831
600	if (cnt <= 0)	832	if (cnt <= 0)
601	{	833	{
602	if (cnt && !res) res = -1;	834	if (cnt && !res) res = -1;
603	break;	835	break;
604	}	836	}
605		837
606	cnt = write (ofd, buf, cnt);	838	cnt = write (ofd, aio_buf, cnt);
607		839
608	if (cnt <= 0)	840	if (cnt <= 0)
609	{	841	{
610	if (cnt && !res) res = -1;	842	if (cnt && !res) res = -1;
611	break;	843	break;
…		…
619		851
620	return res;	852	return res;
621	}	853	}
622		854
623	/* read a full directory */	855	/* read a full directory */
624	static int	856	static void scandir_ (aio_req req, worker *self)
625	scandir_ (const char path, void *namesp)
626	{	857	{
627	DIR *dirp = opendir (path);	858	DIR *dirp;
628	union	859	union
629	{	860	{
630	struct dirent d;	861	struct dirent d;
631	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];	862	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
632	} u;	863	} *u;
633	struct dirent *entp;	864	struct dirent *entp;
634	char name, names;	865	char name, names;
635	int memlen = 4096;	866	int memlen = 4096;
636	int memofs = 0;	867	int memofs = 0;
637	int res = 0;	868	int res = 0;
638	int errorno;	869	int errorno;
639		870
640	if (!dirp)	871	LOCK (wrklock);
641	return -1;	872	self->dirp = dirp = opendir (req->dataptr);
		873	self->dbuf = u = malloc (sizeof (*u));
		874	UNLOCK (wrklock);
642		875
643	names = malloc (memlen);	876	req->data2ptr = names = malloc (memlen);
644		877
		878	if (dirp && u && names)
645	for (;;)	879	for (;;)
646	{	880	{
		881	errno = 0;
647	errno = 0, readdir_r (dirp, &u.d, &entp);	882	readdir_r (dirp, &u->d, &entp);
648		883
649	if (!entp)	884	if (!entp)
650	break;	885	break;
651		886
652	name = entp->d_name;	887	name = entp->d_name;
653		888
654	if (name [0] != '.' \|\| (name [1] && (name [1] != '.' \|\| name [2])))	889	if (name [0] != '.' \|\| (name [1] && (name [1] != '.' \|\| name [2])))
655	{	890	{
656	int len = strlen (name) + 1;	891	int len = strlen (name) + 1;
657		892
658	res++;	893	res++;
659		894
660	while (memofs + len > memlen)	895	while (memofs + len > memlen)
661	{	896	{
662	memlen *= 2;	897	memlen *= 2;
		898	LOCK (wrklock);
663	names = realloc (names, memlen);	899	req->data2ptr = names = realloc (names, memlen);
		900	UNLOCK (wrklock);
		901
664	if (!names)	902	if (!names)
665	break;	903	break;
666	}	904	}
667		905
668	memcpy (names + memofs, name, len);	906	memcpy (names + memofs, name, len);
669	memofs += len;	907	memofs += len;
670	}	908	}
671	}	909	}
672		910
673	errorno = errno;
674	closedir (dirp);
675
676	if (errorno)	911	if (errno)
677	{
678	free (names);
679	errno = errorno;
680	res = -1;	912	res = -1;
681	}	913
682		914	req->result = res;
683	namesp = (void )names;
684	return res;
685	}	915	}
686		916
687	/*****************************************************************************/	917	/*****************************************************************************/
688		918
689	static void *
690	aio_proc (void *thr_arg)	919	static void aio_proc (void thr_arg)
691	{	920	{
692	aio_req req;	921	aio_req req;
693	int type;	922	int type;
		923	worker self = (worker )thr_arg;
694		924
695	do	925	do
696	{	926	{
697	pthread_mutex_lock (&reqlock);	927	LOCK (reqlock);
698		928
699	for (;;)	929	for (;;)
700	{	930	{
701	req = reqs;	931	self->req = req = reqq_shift (&req_queue);
702
703	if (reqs)
704	{
705	reqs = reqs->next;
706	if (!reqs) reqe = 0;
707	}
708		932
709	if (req)	933	if (req)
710	break;	934	break;
711		935
712	pthread_cond_wait (&reqwait, &reqlock);	936	pthread_cond_wait (&reqwait, &reqlock);
713	}	937	}
714		938
715	pthread_mutex_unlock (&reqlock);	939	UNLOCK (reqlock);
716		940
717	errno = 0; /* strictly unnecessary */	941	errno = 0; /* strictly unnecessary */
		942	type = req->type; /* remember type for QUIT check */
718		943
719	if (!req->cancelled)	944	if (!(req->flags & FLAG_CANCELLED))
720	switch (req->type)	945	switch (type)
721	{	946	{
722	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;
723	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;
724		949
725	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;
726	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;
727		952
728	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	953	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
729	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	954	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
730	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	955	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
731		956
…		…
737	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;	962	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
738	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;	963	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
739		964
740	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	965	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
741	case REQ_FSYNC: req->result = fsync (req->fd); break;	966	case REQ_FSYNC: req->result = fsync (req->fd); break;
742	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;	967	case REQ_READDIR: scandir_ (req, self); break;
743		968
		969	case REQ_BUSY:
		970	{
		971	struct timeval tv;
		972
		973	tv.tv_sec = req->fd;
		974	tv.tv_usec = req->fd2;
		975
		976	req->result = select (0, 0, 0, 0, &tv);
		977	}
		978
		979	case REQ_GROUP:
		980	case REQ_NOP:
744	case REQ_QUIT:	981	case REQ_QUIT:
745	break;	982	break;
746		983
747	default:	984	default:
748	req->result = ENOSYS;	985	req->result = ENOSYS;
749	break;	986	break;
750	}	987	}
751		988
752	req->errorno = errno;	989	req->errorno = errno;
753		990
754	pthread_mutex_lock (&reslock);	991	LOCK (reslock);
755		992
756	req->next = 0;	993	if (!reqq_push (&res_queue, req))
757
758	if (rese)
759	{
760	rese->next = req;
761	rese = req;
762	}
763	else
764	{
765	rese = ress = req;
766
767	/* write a dummy byte to the pipe so fh becomes ready */	994	/* write a dummy byte to the pipe so fh becomes ready */
768	write (respipe [1], &respipe, 1);	995	write (respipe [1], &respipe, 1);
769	}
770		996
771	pthread_mutex_unlock (&reslock);	997	self->req = 0;
		998	worker_clear (self);
		999
		1000	UNLOCK (reslock);
772	}	1001	}
773	while (type != REQ_QUIT);	1002	while (type != REQ_QUIT);
774		1003
		1004	LOCK (wrklock);
		1005	worker_free (self);
		1006	UNLOCK (wrklock);
		1007
775	return 0;	1008	return 0;
776	}	1009	}
777		1010
778	/*****************************************************************************/	1011	/*****************************************************************************/
779		1012
780	static void atfork_prepare (void)	1013	static void atfork_prepare (void)
781	{	1014	{
782	pthread_mutex_lock (&reqlock);	1015	LOCK (wrklock);
783	pthread_mutex_lock (&reslock);	1016	LOCK (reqlock);
		1017	LOCK (reslock);
784	#if !HAVE_PREADWRITE	1018	#if !HAVE_PREADWRITE
785	pthread_mutex_lock (&preadwritelock);	1019	LOCK (preadwritelock);
786	#endif	1020	#endif
787	#if !HAVE_READDIR_R	1021	#if !HAVE_READDIR_R
788	pthread_mutex_lock (&readdirlock);	1022	LOCK (readdirlock);
789	#endif	1023	#endif
790	}	1024	}
791		1025
792	static void atfork_parent (void)	1026	static void atfork_parent (void)
793	{	1027	{
794	#if !HAVE_READDIR_R	1028	#if !HAVE_READDIR_R
795	pthread_mutex_unlock (&readdirlock);	1029	UNLOCK (readdirlock);
796	#endif	1030	#endif
797	#if !HAVE_PREADWRITE	1031	#if !HAVE_PREADWRITE
798	pthread_mutex_unlock (&preadwritelock);	1032	UNLOCK (preadwritelock);
799	#endif	1033	#endif
800	pthread_mutex_unlock (&reslock);	1034	UNLOCK (reslock);
801	pthread_mutex_unlock (&reqlock);	1035	UNLOCK (reqlock);
		1036	UNLOCK (wrklock);
802	}	1037	}
803		1038
804	static void atfork_child (void)	1039	static void atfork_child (void)
805	{	1040	{
806	aio_req prv;	1041	aio_req prv;
807		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
808	started = 0;	1060	started = 0;
809		1061	nreqs = 0;
810	while (reqs)
811	{
812	prv = reqs;
813	reqs = prv->next;
814	req_free (prv);
815	}
816
817	reqs = reqe = 0;
818
819	while (ress)
820	{
821	prv = ress;
822	ress = prv->next;
823	req_free (prv);
824	}
825
826	ress = rese = 0;
827		1062
828	close (respipe [0]);	1063	close (respipe [0]);
829	close (respipe [1]);	1064	close (respipe [1]);
830	create_pipe ();	1065	create_pipe ();
831		1066
832	atfork_parent ();	1067	atfork_parent ();
833	}	1068	}
834		1069
835	#define dREQ \	1070	#define dREQ \
836	aio_req req; \	1071	aio_req req; \
		1072	int req_pri = next_pri; \
		1073	next_pri = DEFAULT_PRI + PRI_BIAS; \
837	\	1074	\
838	if (SvOK (callback) && !SvROK (callback)) \	1075	if (SvOK (callback) && !SvROK (callback)) \
839	croak ("callback must be undef or of reference type"); \	1076	croak ("callback must be undef or of reference type"); \
840	\	1077	\
841	Newz (0, req, 1, aio_cb); \	1078	Newz (0, req, 1, aio_cb); \
842	if (!req) \	1079	if (!req) \
843	croak ("out of memory during aio_req allocation"); \	1080	croak ("out of memory during aio_req allocation"); \
844	\	1081	\
845	req->callback = newSVsv (callback)	1082	req->callback = newSVsv (callback); \
		1083	req->pri = req_pri
846		1084
847	#define REQ_SEND \	1085	#define REQ_SEND \
848	req_send (req); \	1086	req_send (req); \
849	\	1087	\
850	if (GIMME_V != G_VOID) \	1088	if (GIMME_V != G_VOID) \
851	XPUSHs (req_sv (req));	1089	XPUSHs (req_sv (req, AIO_REQ_KLASS));
852		1090
853	MODULE = IO::AIO PACKAGE = IO::AIO	1091	MODULE = IO::AIO PACKAGE = IO::AIO
854		1092
855	PROTOTYPES: ENABLE	1093	PROTOTYPES: ENABLE
856		1094
…		…
872		1110
873	void	1111	void
874	max_parallel (nthreads)	1112	max_parallel (nthreads)
875	int nthreads	1113	int nthreads
876	PROTOTYPE: $	1114	PROTOTYPE: $
877
878	int
879	max_outstanding (nreqs)
880	int nreqs
881	PROTOTYPE: $
882	CODE:
883	RETVAL = max_outstanding;
884	max_outstanding = nreqs;
885		1115
886	void	1116	void
887	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	1117	aio_open (pathname,flags,mode,callback=&PL_sv_undef)
888	SV * pathname	1118	SV * pathname
889	int flags	1119	int flags
…		…
1103	req->dataptr = SvPVbyte_nolen (req->data);	1333	req->dataptr = SvPVbyte_nolen (req->data);
1104		1334
1105	REQ_SEND;	1335	REQ_SEND;
1106	}	1336	}
1107		1337
1108	#if 0
1109
1110	# undocumented, because it does not cancel active requests
1111	void	1338	void
1112	cancel_most_requests ()	1339	aio_busy (delay,callback=&PL_sv_undef)
		1340	double delay
		1341	SV * callback
		1342	PPCODE:
		1343	{
		1344	dREQ;
		1345
		1346	req->type = REQ_BUSY;
		1347	req->fd = delay < 0. ? 0 : delay;
		1348	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
		1349
		1350	REQ_SEND;
		1351	}
		1352
		1353	void
		1354	aio_group (callback=&PL_sv_undef)
		1355	SV * callback
1113	PROTOTYPE:	1356	PROTOTYPE: ;$
1114	CODE:	1357	PPCODE:
1115	{	1358	{
1116	aio_req *req;	1359	dREQ;
1117		1360
1118	pthread_mutex_lock (&reqlock);	1361	req->type = REQ_GROUP;
1119	for (req = reqs; req; req = req->next)	1362	req_send (req);
1120	req->flags \|= 1;
1121	pthread_mutex_unlock (&reqlock);
1122		1363
1123	pthread_mutex_lock (&reslock);	1364	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1124	for (req = ress; req; req = req->next)
1125	req->flags \|= 1;
1126	pthread_mutex_unlock (&reslock);
1127	}	1365	}
1128		1366
1129	#endif	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;
1130		1393
1131	void	1394	void
1132	flush ()	1395	flush ()
1133	PROTOTYPE:	1396	PROTOTYPE:
1134	CODE:	1397	CODE:
…		…
1177	CODE:	1440	CODE:
1178	RETVAL = nreqs;	1441	RETVAL = nreqs;
1179	OUTPUT:	1442	OUTPUT:
1180	RETVAL	1443	RETVAL
1181		1444
		1445	PROTOTYPES: DISABLE
		1446
1182	MODULE = IO::AIO PACKAGE = IO::AIO::CB	1447	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1183		1448
1184	void	1449	void
1185	cancel (aio_req_ornot req)	1450	cancel (aio_req_ornot req)
1186	PROTOTYPE:
1187	CODE:	1451	CODE:
1188	req->cancelled = 1;	1452	req_cancel (req);
1189		1453
		1454	void
		1455	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
		1456	CODE:
		1457	SvREFCNT_dec (req->callback);
		1458	req->callback = newSVsv (callback);
		1459
		1460	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
		1461
		1462	void
		1463	add (aio_req grp, ...)
		1464	PPCODE:
		1465	{
		1466	int i;
		1467	aio_req req;
		1468
		1469	if (grp->fd == 2)
		1470	croak ("cannot add requests to IO::AIO::GRP after the group finished");
		1471
		1472	for (i = 1; i < items; ++i )
		1473	{
		1474	if (GIMME_V != G_VOID)
		1475	XPUSHs (sv_2mortal (newSVsv (ST (i))));
		1476
		1477	req = SvAIO_REQ (ST (i));
		1478
		1479	if (req)
		1480	{
		1481	++grp->length;
		1482	req->grp = grp;
		1483
		1484	req->grp_prev = 0;
		1485	req->grp_next = grp->grp_first;
		1486
		1487	if (grp->grp_first)
		1488	grp->grp_first->grp_prev = req;
		1489
		1490	grp->grp_first = req;
		1491	}
		1492	}
		1493	}
		1494
		1495	void
		1496	cancel_subs (aio_req_ornot req)
		1497	CODE:
		1498	req_cancel_subs (req);
		1499
		1500	void
		1501	result (aio_req grp, ...)
		1502	CODE:
		1503	{
		1504	int i;
		1505	AV *av = newAV ();
		1506
		1507	for (i = 1; i < items; ++i )
		1508	av_push (av, newSVsv (ST (i)));
		1509
		1510	SvREFCNT_dec (grp->data);
		1511	grp->data = (SV *)av;
		1512	}
		1513
		1514	void
		1515	limit (aio_req grp, int limit)
		1516	CODE:
		1517	grp->fd2 = limit;
		1518	aio_grp_feed (grp);
		1519
		1520	void
		1521	feed (aio_req grp, SV *callback=&PL_sv_undef)
		1522	CODE:
		1523	{
		1524	SvREFCNT_dec (grp->fh2);
		1525	grp->fh2 = newSVsv (callback);
		1526
		1527	if (grp->fd2 <= 0)
		1528	grp->fd2 = 2;
		1529
		1530	aio_grp_feed (grp);
		1531	}
		1532

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Comparing IO-AIO/AIO.xs (file contents): Revision 1.43 by root, Sat Oct 21 23:06:04 2006 UTC vs. Revision 1.75 by root, Thu Oct 26 06:44:48 2006 UTC

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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.43 by root, Sat Oct 21 23:06:04 2006 UTC vs.
Revision 1.75 by root, Thu Oct 26 06:44:48 2006 UTC