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/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 1.93 by root, Wed Nov 8 02:01:02 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"
…		…
34	# else	43	# else
35	# error sendfile support requested but not available	44	# error sendfile support requested but not available
36	# endif	45	# endif
37	#endif	46	#endif
38		47
		48	/* number of seconds after which idle threads exit */
		49	#define IDLE_TIMEOUT 10
		50
39	/* used for struct dirent, AIX doesn't provide it */	51	/* used for struct dirent, AIX doesn't provide it */
40	#ifndef NAME_MAX	52	#ifndef NAME_MAX
41	# define NAME_MAX 4096	53	# define NAME_MAX 4096
42	#endif	54	#endif
43		55
		56	#ifndef PTHREAD_STACK_MIN
		57	/* care for broken platforms, e.g. windows */
		58	# define PTHREAD_STACK_MIN 16384
		59	#endif
		60
44	#if __ia64	61	#if __ia64
45	# define STACKSIZE 65536	62	# define STACKSIZE 65536
		63	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
		64	# define STACKSIZE PTHREAD_STACK_MIN
46	#else	65	#else
47	# define STACKSIZE 8192	66	# define STACKSIZE 16384
48	#endif	67	#endif
		68
		69	/* wether word reads are potentially non-atomic.
		70	* this is conservatice, likely most arches this runs
		71	* on have atomic word read/writes.
		72	*/
		73	#ifndef WORDACCESS_UNSAFE
		74	# if __i386 || __x86_64
		75	# define WORDACCESS_UNSAFE 0
		76	# else
		77	# define WORDACCESS_UNSAFE 1
		78	# endif
		79	#endif
		80
		81	/* buffer size for various temporary buffers */
		82	#define AIO_BUFSIZE 65536
		83
		84	#define dBUF \
		85	char *aio_buf; \
		86	LOCK (wrklock); \
		87	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
		88	UNLOCK (wrklock); \
		89	if (!aio_buf) \
		90	return -1;
		91
		92	typedef SV SV8; /* byte-sv, used for argument-checking */
49		93
50	enum {	94	enum {
51	REQ_QUIT,	95	REQ_QUIT,
52	REQ_OPEN, REQ_CLOSE,	96	REQ_OPEN, REQ_CLOSE,
53	REQ_READ, REQ_WRITE, REQ_READAHEAD,	97	REQ_READ, REQ_WRITE, REQ_READAHEAD,
54	REQ_SENDFILE,	98	REQ_SENDFILE,
55	REQ_STAT, REQ_LSTAT, REQ_FSTAT,	99	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
56	REQ_FSYNC, REQ_FDATASYNC,	100	REQ_FSYNC, REQ_FDATASYNC,
57	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,	101	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
58	REQ_READDIR,	102	REQ_MKNOD, REQ_READDIR,
59	REQ_LINK, REQ_SYMLINK,	103	REQ_LINK, REQ_SYMLINK, REQ_READLINK,
60	REQ_SLEEP,	104	REQ_GROUP, REQ_NOP,
61	REQ_GROUP,	105	REQ_BUSY,
62	};	106	};
63		107
64	#define AIO_REQ_KLASS "IO::AIO::REQ"	108	#define AIO_REQ_KLASS "IO::AIO::REQ"
65	#define AIO_GRP_KLASS "IO::AIO::GRP"	109	#define AIO_GRP_KLASS "IO::AIO::GRP"
66		110
67	typedef struct aio_cb	111	typedef struct aio_cb
68	{	112	{
69	struct aio_cb *grp, *grp_prev, *grp_next;
70
71	struct aio_cb *volatile next;	113	struct aio_cb *volatile next;
72		114
		115	SV *callback, *fh;
		116	SV *sv1, *sv2;
		117	void *ptr1, *ptr2;
		118	off_t offs;
		119	size_t size;
		120	ssize_t result;
		121
		122	STRLEN stroffset;
		123	int type;
		124	int int1, int2;
		125	int errorno;
		126	mode_t mode; /* open */
		127
		128	unsigned char flags;
		129	unsigned char pri;
		130
73	SV *self; /* the perl counterpart of this request, if any */	131	SV *self; /* the perl counterpart of this request, if any */
74		132	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
75	SV *data, *callback;
76	SV *fh, *fh2;
77	void *dataptr, *data2ptr;
78	Stat_t *statdata;
79	off_t offset;
80	size_t length;
81	ssize_t result;
82
83	int type;
84	int fd, fd2;
85	int errorno;
86	STRLEN dataoffset;
87	mode_t mode; /* open */
88	unsigned char cancelled;
89	} aio_cb;	133	} aio_cb;
		134
		135	enum {
		136	FLAG_CANCELLED = 0x01, /* request was cancelled */
		137	FLAG_SV1_RO_OFF = 0x40, /* data was set readonly */
		138	FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */
		139	};
90		140
91	typedef aio_cb *aio_req;	141	typedef aio_cb *aio_req;
92	typedef aio_cb *aio_req_ornot;	142	typedef aio_cb *aio_req_ornot;
93		143
		144	enum {
		145	PRI_MIN = -4,
		146	PRI_MAX = 4,
		147
		148	DEFAULT_PRI = 0,
		149	PRI_BIAS = -PRI_MIN,
		150	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
		151	};
		152
		153	#define AIO_TICKS ((1000000 + 1023) >> 10)
		154
		155	static unsigned int max_poll_time = 0;
		156	static unsigned int max_poll_reqs = 0;
		157
		158	/* calculcate time difference in ~1/AIO_TICKS of a second */
		159	static int tvdiff (struct timeval *tv1, struct timeval *tv2)
		160	{
		161	return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS
		162	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
		163	}
		164
		165	static int next_pri = DEFAULT_PRI + PRI_BIAS;
		166
94	static int started, wanted;	167	static unsigned int started, idle, wanted;
95	static volatile int nreqs;	168
96	static int max_outstanding = 1<<30;	169	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
		170	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
		171	#else
		172	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
		173	#endif
		174
		175	#define LOCK(mutex) pthread_mutex_lock (&(mutex))
		176	#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
		177
		178	/* worker threads management */
		179	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
		180
		181	typedef struct worker {
		182	/* locked by wrklock */
		183	struct worker *prev, *next;
		184
		185	pthread_t tid;
		186
		187	/* locked by reslock, reqlock or wrklock */
		188	aio_req req; /* currently processed request */
		189	void *dbuf;
		190	DIR *dirp;
		191	} worker;
		192
		193	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
		194
		195	static void worker_clear (worker *wrk)
		196	{
		197	if (wrk->dirp)
		198	{
		199	closedir (wrk->dirp);
		200	wrk->dirp = 0;
		201	}
		202
		203	if (wrk->dbuf)
		204	{
		205	free (wrk->dbuf);
		206	wrk->dbuf = 0;
		207	}
		208	}
		209
		210	static void worker_free (worker *wrk)
		211	{
		212	wrk->next->prev = wrk->prev;
		213	wrk->prev->next = wrk->next;
		214
		215	free (wrk);
		216	}
		217
		218	static volatile unsigned int nreqs, nready, npending;
		219	static volatile unsigned int max_idle = 4;
		220	static volatile unsigned int max_outstanding = 0xffffffff;
97	static int respipe [2];	221	static int respipe [2];
98		222
99	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	223	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
100	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;	224	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
101	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	225	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
102		226
103	static volatile aio_req reqs, reqe; /* queue start, queue end */	227	#if WORDACCESS_UNSAFE
104	static volatile aio_req ress, rese; /* queue start, queue end */
105		228
		229	static unsigned int get_nready ()
		230	{
		231	unsigned int retval;
		232
		233	LOCK (reqlock);
		234	retval = nready;
		235	UNLOCK (reqlock);
		236
		237	return retval;
		238	}
		239
		240	static unsigned int get_npending ()
		241	{
		242	unsigned int retval;
		243
		244	LOCK (reslock);
		245	retval = npending;
		246	UNLOCK (reslock);
		247
		248	return retval;
		249	}
		250
		251	static unsigned int get_nthreads ()
		252	{
		253	unsigned int retval;
		254
		255	LOCK (wrklock);
		256	retval = started;
		257	UNLOCK (wrklock);
		258
		259	return retval;
		260	}
		261
		262	#else
		263
		264	# define get_nready() nready
		265	# define get_npending() npending
		266	# define get_nthreads() started
		267
		268	#endif
		269
		270	/*
		271	* a somewhat faster data structure might be nice, but
		272	* with 8 priorities this actually needs <20 insns
		273	* per shift, the most expensive operation.
		274	*/
		275	typedef struct {
		276	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
		277	int size;
		278	} reqq;
		279
		280	static reqq req_queue;
		281	static reqq res_queue;
		282
		283	int reqq_push (reqq *q, aio_req req)
		284	{
		285	int pri = req->pri;
		286	req->next = 0;
		287
		288	if (q->qe[pri])
		289	{
		290	q->qe[pri]->next = req;
		291	q->qe[pri] = req;
		292	}
		293	else
		294	q->qe[pri] = q->qs[pri] = req;
		295
		296	return q->size++;
		297	}
		298
		299	aio_req reqq_shift (reqq *q)
		300	{
		301	int pri;
		302
		303	if (!q->size)
		304	return 0;
		305
		306	--q->size;
		307
		308	for (pri = NUM_PRI; pri--; )
		309	{
		310	aio_req req = q->qs[pri];
		311
		312	if (req)
		313	{
		314	if (!(q->qs[pri] = req->next))
		315	q->qe[pri] = 0;
		316
		317	return req;
		318	}
		319	}
		320
		321	abort ();
		322	}
		323
		324	static int poll_cb ();
		325	static void req_invoke (aio_req req);
106	static void req_free (aio_req req);	326	static void req_free (aio_req req);
		327	static void req_cancel (aio_req req);
107		328
108	/* must be called at most once */	329	/* must be called at most once */
109	static SV *req_sv (aio_req req, const char *klass)	330	static SV *req_sv (aio_req req, const char *klass)
110	{	331	{
		332	if (!req->self)
		333	{
111	req->self = (SV *)newHV ();	334	req->self = (SV *)newHV ();
112	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	335	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
		336	}
113		337
114	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	338	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));
115	}	339	}
116		340
117	static aio_req SvAIO_REQ (SV *sv)	341	static aio_req SvAIO_REQ (SV *sv)
118	{	342	{
		343	MAGIC *mg;
		344
119	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	345	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))
120	croak ("object of class " AIO_REQ_KLASS " expected");	346	croak ("object of class " AIO_REQ_KLASS " expected");
121		347
122	MAGIC *mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	348	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
123		349
124	return mg ? (aio_req)mg->mg_ptr : 0;	350	return mg ? (aio_req)mg->mg_ptr : 0;
125	}	351	}
126		352
127	static void poll_wait ()	353	static void aio_grp_feed (aio_req grp)
128	{	354	{
129	if (nreqs && !ress)	355	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
130	{	356	{
131	fd_set rfd;	357	int old_len = grp->size;
132	FD_ZERO(&rfd);
133	FD_SET(respipe [0], &rfd);
134		358
135	select (respipe [0] + 1, &rfd, 0, 0, 0);	359	if (grp->sv2 && SvOK (grp->sv2))
		360	{
		361	dSP;
		362
		363	ENTER;
		364	SAVETMPS;
		365	PUSHMARK (SP);
		366	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
		367	PUTBACK;
		368	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
		369	SPAGAIN;
		370	FREETMPS;
		371	LEAVE;
		372	}
		373
		374	/* stop if no progress has been made */
		375	if (old_len == grp->size)
		376	{
		377	SvREFCNT_dec (grp->sv2);
		378	grp->sv2 = 0;
		379	break;
		380	}
136	}	381	}
137	}	382	}
138		383
		384	static void aio_grp_dec (aio_req grp)
		385	{
		386	--grp->size;
		387
		388	/* call feeder, if applicable */
		389	aio_grp_feed (grp);
		390
		391	/* finish, if done */
		392	if (!grp->size && grp->int1)
		393	{
		394	req_invoke (grp);
		395	req_free (grp);
		396	}
		397	}
		398
139	static void req_invoke (aio_req req)	399	static void req_invoke (aio_req req)
140	{	400	{
141	dSP;	401	dSP;
142	int errorno = errno;
143		402
144	if (req->cancelled || !SvOK (req->callback))	403	if (req->flags & FLAG_SV1_RO_OFF)
145	return;	404	SvREADONLY_off (req->sv1);
146		405
147	errno = req->errorno;	406	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
148
149	ENTER;
150	PUSHMARK (SP);
151	EXTEND (SP, 1);
152
153	switch (req->type)
154	{	407	{
155	case REQ_READDIR:	408	ENTER;
		409	SAVETMPS;
		410	PUSHMARK (SP);
		411	EXTEND (SP, 1);
		412
		413	switch (req->type)
156	{	414	{
157	SV *rv = &PL_sv_undef;	415	case REQ_READDIR:
158
159	if (req->result >= 0)
160	{	416	{
161	char *buf = req->data2ptr;	417	SV *rv = &PL_sv_undef;
162	AV *av = newAV ();
163		418
164	while (req->result)	419	if (req->result >= 0)
165	{	420	{
		421	int i;
		422	char *buf = req->ptr2;
		423	AV *av = newAV ();
		424
		425	av_extend (av, req->result - 1);
		426
		427	for (i = 0; i < req->result; ++i)
		428	{
166	SV *sv = newSVpv (buf, 0);	429	SV *sv = newSVpv (buf, 0);
167		430
168	av_push (av, sv);	431	av_store (av, i, sv);
169	buf += SvCUR (sv) + 1;	432	buf += SvCUR (sv) + 1;
170	req->result--;	433	}
		434
		435	rv = sv_2mortal (newRV_noinc ((SV *)av));
171	}	436	}
172		437
173	rv = sv_2mortal (newRV_noinc ((SV *)av));	438	PUSHs (rv);
174	}	439	}
		440	break;
175		441
		442	case REQ_OPEN:
		443	{
		444	/* convert fd to fh */
		445	SV *fh;
		446
		447	PUSHs (sv_2mortal (newSViv (req->result)));
		448	PUTBACK;
		449	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
		450	SPAGAIN;
		451
		452	fh = POPs;
		453	PUSHMARK (SP);
176	PUSHs (rv);	454	XPUSHs (fh);
		455	}
		456	break;
		457
		458	case REQ_GROUP:
		459	req->int1 = 2; /* mark group as finished */
		460
		461	if (req->sv1)
		462	{
		463	int i;
		464	AV *av = (AV *)req->sv1;
		465
		466	EXTEND (SP, AvFILL (av) + 1);
		467	for (i = 0; i <= AvFILL (av); ++i)
		468	PUSHs (*av_fetch (av, i, 0));
		469	}
		470	break;
		471
		472	case REQ_NOP:
		473	case REQ_BUSY:
		474	break;
		475
		476	case REQ_READLINK:
		477	if (req->result > 0)
		478	{
		479	SvCUR_set (req->sv1, req->result);
		480	*SvEND (req->sv1) = 0;
		481	PUSHs (req->sv1);
		482	}
		483	break;
		484
		485	case REQ_STAT:
		486	case REQ_LSTAT:
		487	case REQ_FSTAT:
		488	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
		489	PL_laststatval = req->result;
		490	PL_statcache = *(Stat_t *)(req->ptr2);
		491	PUSHs (sv_2mortal (newSViv (req->result)));
		492	break;
		493
		494	case REQ_READ:
		495	SvCUR_set (req->sv1, req->stroffset + (req->result > 0 ? req->result : 0));
		496	*SvEND (req->sv1) = 0;
		497	PUSHs (sv_2mortal (newSViv (req->result)));
		498	break;
		499
		500	default:
		501	PUSHs (sv_2mortal (newSViv (req->result)));
		502	break;
177	}	503	}
178	break;
179		504
180	case REQ_OPEN:	505	errno = req->errorno;
181	{
182	/* convert fd to fh */
183	SV *fh;
184		506
185	PUSHs (sv_2mortal (newSViv (req->result)));
186	PUTBACK;	507	PUTBACK;
187	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	508	call_sv (req->callback, G_VOID | G_EVAL);
188	SPAGAIN;	509	SPAGAIN;
189		510
190	fh = SvREFCNT_inc (POPs);	511	FREETMPS;
191		512	LEAVE;
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	}	513	}
216		514
		515	if (req->grp)
		516	{
		517	aio_req grp = req->grp;
217		518
218	PUTBACK;	519	/* unlink request */
219	call_sv (req->callback, G_VOID | G_EVAL);	520	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
220	SPAGAIN;	521	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
		522
		523	if (grp->grp_first == req)
		524	grp->grp_first = req->grp_next;
		525
		526	aio_grp_dec (grp);
		527	}
221		528
222	if (SvTRUE (ERRSV))	529	if (SvTRUE (ERRSV))
223	{	530	{
224	req_free (req);	531	req_free (req);
225	croak (0);	532	croak (0);
226	}	533	}
227
228	LEAVE;
229
230	errno = errorno;
231	}	534	}
232		535
233	static void req_free (aio_req req)	536	static void req_free (aio_req req)
234	{	537	{
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)	538	if (req->self)
251	{	539	{
252	sv_unmagic (req->self, PERL_MAGIC_ext);	540	sv_unmagic (req->self, PERL_MAGIC_ext);
253	SvREFCNT_dec (req->self);	541	SvREFCNT_dec (req->self);
254	}	542	}
255		543
256	if (req->data)
257	SvREFCNT_dec (req->data);
258
259	if (req->fh)
260	SvREFCNT_dec (req->fh);	544	SvREFCNT_dec (req->fh);
261		545	SvREFCNT_dec (req->sv1);
262	if (req->fh2)
263	SvREFCNT_dec (req->fh2);	546	SvREFCNT_dec (req->sv2);
264
265	if (req->statdata)
266	Safefree (req->statdata);
267
268	if (req->callback)
269	SvREFCNT_dec (req->callback);	547	SvREFCNT_dec (req->callback);
270		548
271	if (req->type == REQ_READDIR && req->result >= 0)	549	if (req->flags & FLAG_PTR2_FREE)
272	free (req->data2ptr);	550	free (req->ptr2);
273		551
274	Safefree (req);	552	Safefree (req);
275	}	553	}
276		554
		555	static void req_cancel_subs (aio_req grp)
		556	{
		557	aio_req sub;
		558
		559	if (grp->type != REQ_GROUP)
		560	return;
		561
		562	SvREFCNT_dec (grp->sv2);
		563	grp->sv2 = 0;
		564
		565	for (sub = grp->grp_first; sub; sub = sub->grp_next)
		566	req_cancel (sub);
		567	}
		568
277	static void req_cancel (aio_req req)	569	static void req_cancel (aio_req req)
278	{	570	{
279	req->cancelled = 1;	571	req->flags |= FLAG_CANCELLED;
280		572
281	if (req->type == REQ_GROUP)	573	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	}
289
290	static int poll_cb ()
291	{
292	dSP;
293	int count = 0;
294	int do_croak = 0;
295	aio_req req;
296
297	for (;;)
298	{
299	pthread_mutex_lock (&reslock);
300	req = ress;
301
302	if (req)
303	{
304	ress = req->next;
305
306	if (!ress)
307	{
308	/* read any signals sent by the worker threads */
309	char buf [32];
310	while (read (respipe [0], buf, 32) == 32)
311	;
312
313	rese = 0;
314	}
315	}
316
317	pthread_mutex_unlock (&reslock);
318
319	if (!req)
320	break;
321
322	nreqs--;
323
324	if (req->type == REQ_QUIT)
325	started--;
326	else if (req->type == REQ_GROUP && req->grp_next != req)
327	{
328	req->fd = 1; /* mark request as delayed */
329	continue;
330	}
331	else
332	{
333	if (req->type == REQ_READ)
334	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
335
336	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
337	SvREADONLY_off (req->data);
338
339	if (req->statdata)
340	{
341	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
342	PL_laststatval = req->result;
343	PL_statcache = *(req->statdata);
344	}
345
346	req_invoke (req);
347
348	count++;
349	}
350
351	req_free (req);
352	}
353
354	return count;
355	}	574	}
356		575
357	static void *aio_proc(void *arg);	576	static void *aio_proc(void *arg);
358		577
359	static void start_thread (void)	578	static void start_thread (void)
360	{	579	{
361	sigset_t fullsigset, oldsigset;	580	sigset_t fullsigset, oldsigset;
362	pthread_t tid;
363	pthread_attr_t attr;	581	pthread_attr_t attr;
		582
		583	worker *wrk = calloc (1, sizeof (worker));
		584
		585	if (!wrk)
		586	croak ("unable to allocate worker thread data");
364		587
365	pthread_attr_init (&attr);	588	pthread_attr_init (&attr);
366	pthread_attr_setstacksize (&attr, STACKSIZE);	589	pthread_attr_setstacksize (&attr, STACKSIZE);
367	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);	590	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
		591	#ifdef PTHREAD_SCOPE_PROCESS
		592	pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS);
		593	#endif
368		594
369	sigfillset (&fullsigset);	595	sigfillset (&fullsigset);
		596
		597	LOCK (wrklock);
370	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);	598	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
371		599
372	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)	600	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
373	started++;
374
375	sigprocmask (SIG_SETMASK, &oldsigset, 0);
376	}
377
378	static void req_send (aio_req req)
379	{
380	while (started < wanted && nreqs >= started)
381	start_thread ();
382
383	nreqs++;
384
385	pthread_mutex_lock (&reqlock);
386
387	req->next = 0;
388
389	if (reqe)
390	{	601	{
391	reqe->next = req;	602	wrk->prev = &wrk_first;
392	reqe = req;	603	wrk->next = wrk_first.next;
		604	wrk_first.next->prev = wrk;
		605	wrk_first.next = wrk;
		606	++started;
393	}	607	}
394	else	608	else
395	reqe = reqs = req;	609	free (wrk);
396		610
		611	sigprocmask (SIG_SETMASK, &oldsigset, 0);
		612	UNLOCK (wrklock);
		613	}
		614
		615	static void maybe_start_thread ()
		616	{
		617	if (get_nthreads () >= wanted)
		618	return;
		619
		620	/* todo: maybe use idle here, but might be less exact */
		621	if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
		622	return;
		623
		624	start_thread ();
		625	}
		626
		627	static void req_send (aio_req req)
		628	{
		629	++nreqs;
		630
		631	LOCK (reqlock);
		632	++nready;
		633	reqq_push (&req_queue, req);
397	pthread_cond_signal (&reqwait);	634	pthread_cond_signal (&reqwait);
398	pthread_mutex_unlock (&reqlock);	635	UNLOCK (reqlock);
399		636
400	if (nreqs > max_outstanding)	637	maybe_start_thread ();
401	for (;;)
402	{
403	poll_cb ();
404
405	if (nreqs <= max_outstanding)
406	break;
407
408	poll_wait ();
409	}
410	}	638	}
411		639
412	static void end_thread (void)	640	static void end_thread (void)
413	{	641	{
414	aio_req req;	642	aio_req req;
		643
415	Newz (0, req, 1, aio_cb);	644	Newz (0, req, 1, aio_cb);
		645
416	req->type = REQ_QUIT;	646	req->type = REQ_QUIT;
		647	req->pri = PRI_MAX + PRI_BIAS;
417		648
418	req_send (req);	649	LOCK (reqlock);
		650	reqq_push (&req_queue, req);
		651	pthread_cond_signal (&reqwait);
		652	UNLOCK (reqlock);
		653
		654	LOCK (wrklock);
		655	--started;
		656	UNLOCK (wrklock);
		657	}
		658
		659	static void set_max_idle (int nthreads)
		660	{
		661	if (WORDACCESS_UNSAFE) LOCK (reqlock);
		662	max_idle = nthreads <= 0 ? 1 : nthreads;
		663	if (WORDACCESS_UNSAFE) UNLOCK (reqlock);
419	}	664	}
420		665
421	static void min_parallel (int nthreads)	666	static void min_parallel (int nthreads)
422	{	667	{
423	if (wanted < nthreads)	668	if (wanted < nthreads)
424	wanted = nthreads;	669	wanted = nthreads;
425	}	670	}
426		671
427	static void max_parallel (int nthreads)	672	static void max_parallel (int nthreads)
428	{	673	{
429	int cur = started;
430
431	if (wanted > nthreads)	674	if (wanted > nthreads)
432	wanted = nthreads;	675	wanted = nthreads;
433		676
434	while (cur > wanted)	677	while (started > wanted)
		678	end_thread ();
		679	}
		680
		681	static void poll_wait ()
		682	{
		683	fd_set rfd;
		684
		685	while (nreqs)
435	{	686	{
		687	int size;
		688	if (WORDACCESS_UNSAFE) LOCK (reslock);
		689	size = res_queue.size;
		690	if (WORDACCESS_UNSAFE) UNLOCK (reslock);
		691
		692	if (size)
		693	return;
		694
436	end_thread ();	695	maybe_start_thread ();
437	cur--;	696
		697	FD_ZERO(&rfd);
		698	FD_SET(respipe [0], &rfd);
		699
		700	select (respipe [0] + 1, &rfd, 0, 0, 0);
438	}	701	}
		702	}
439		703
440	while (started > wanted)	704	static int poll_cb ()
		705	{
		706	dSP;
		707	int count = 0;
		708	int maxreqs = max_poll_reqs;
		709	int do_croak = 0;
		710	struct timeval tv_start, tv_now;
		711	aio_req req;
		712
		713	if (max_poll_time)
		714	gettimeofday (&tv_start, 0);
		715
		716	for (;;)
441	{	717	{
		718	for (;;)
		719	{
		720	maybe_start_thread ();
		721
		722	LOCK (reslock);
		723	req = reqq_shift (&res_queue);
		724
		725	if (req)
		726	{
		727	--npending;
		728
		729	if (!res_queue.size)
		730	{
		731	/* read any signals sent by the worker threads */
		732	char buf [32];
		733	while (read (respipe [0], buf, 32) == 32)
		734	;
		735	}
		736	}
		737
		738	UNLOCK (reslock);
		739
		740	if (!req)
		741	break;
		742
		743	--nreqs;
		744
		745	if (req->type == REQ_GROUP && req->size)
		746	{
		747	req->int1 = 1; /* mark request as delayed */
		748	continue;
		749	}
		750	else
		751	{
		752	req_invoke (req);
		753
		754	count++;
		755	}
		756
		757	req_free (req);
		758
		759	if (maxreqs && !--maxreqs)
		760	break;
		761
		762	if (max_poll_time)
		763	{
		764	gettimeofday (&tv_now, 0);
		765
		766	if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
		767	break;
		768	}
		769	}
		770
		771	if (nreqs <= max_outstanding)
		772	break;
		773
442	poll_wait ();	774	poll_wait ();
443	poll_cb ();	775
		776	++maxreqs;
444	}	777	}
		778
		779	return count;
445	}	780	}
446		781
447	static void create_pipe ()	782	static void create_pipe ()
448	{	783	{
449	if (pipe (respipe))	784	if (pipe (respipe))
…		…
473	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)	808	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
474	{	809	{
475	ssize_t res;	810	ssize_t res;
476	off_t ooffset;	811	off_t ooffset;
477		812
478	pthread_mutex_lock (&preadwritelock);	813	LOCK (preadwritelock);
479	ooffset = lseek (fd, 0, SEEK_CUR);	814	ooffset = lseek (fd, 0, SEEK_CUR);
480	lseek (fd, offset, SEEK_SET);	815	lseek (fd, offset, SEEK_SET);
481	res = read (fd, buf, count);	816	res = read (fd, buf, count);
482	lseek (fd, ooffset, SEEK_SET);	817	lseek (fd, ooffset, SEEK_SET);
483	pthread_mutex_unlock (&preadwritelock);	818	UNLOCK (preadwritelock);
484		819
485	return res;	820	return res;
486	}	821	}
487		822
488	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)	823	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
489	{	824	{
490	ssize_t res;	825	ssize_t res;
491	off_t ooffset;	826	off_t ooffset;
492		827
493	pthread_mutex_lock (&preadwritelock);	828	LOCK (preadwritelock);
494	ooffset = lseek (fd, 0, SEEK_CUR);	829	ooffset = lseek (fd, 0, SEEK_CUR);
495	lseek (fd, offset, SEEK_SET);	830	lseek (fd, offset, SEEK_SET);
496	res = write (fd, buf, count);	831	res = write (fd, buf, count);
497	lseek (fd, offset, SEEK_SET);	832	lseek (fd, offset, SEEK_SET);
498	pthread_mutex_unlock (&preadwritelock);	833	UNLOCK (preadwritelock);
499		834
500	return res;	835	return res;
501	}	836	}
502	#endif	837	#endif
503		838
504	#if !HAVE_FDATASYNC	839	#if !HAVE_FDATASYNC
505	# define fdatasync fsync	840	# define fdatasync fsync
506	#endif	841	#endif
507		842
508	#if !HAVE_READAHEAD	843	#if !HAVE_READAHEAD
509	# define readahead aio_readahead	844	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
510		845
511	static ssize_t readahead (int fd, off_t offset, size_t count)	846	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
512	{	847	{
513	char readahead_buf[4096];	848	dBUF;
514		849
515	while (count > 0)	850	while (count > 0)
516	{	851	{
517	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);	852	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
518		853
519	pread (fd, readahead_buf, len, offset);	854	pread (fd, aio_buf, len, offset);
520	offset += len;	855	offset += len;
521	count -= len;	856	count -= len;
522	}	857	}
523		858
524	errno = 0;	859	errno = 0;
525	}	860	}
		861
526	#endif	862	#endif
527		863
528	#if !HAVE_READDIR_R	864	#if !HAVE_READDIR_R
529	# define readdir_r aio_readdir_r	865	# define readdir_r aio_readdir_r
530		866
…		…
533	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)	869	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
534	{	870	{
535	struct dirent *e;	871	struct dirent *e;
536	int errorno;	872	int errorno;
537		873
538	pthread_mutex_lock (&readdirlock);	874	LOCK (readdirlock);
539		875
540	e = readdir (dirp);	876	e = readdir (dirp);
541	errorno = errno;	877	errorno = errno;
542		878
543	if (e)	879	if (e)
…		…
546	strcpy (ent->d_name, e->d_name);	882	strcpy (ent->d_name, e->d_name);
547	}	883	}
548	else	884	else
549	*res = 0;	885	*res = 0;
550		886
551	pthread_mutex_unlock (&readdirlock);	887	UNLOCK (readdirlock);
552		888
553	errno = errorno;	889	errno = errorno;
554	return e ? 0 : -1;	890	return e ? 0 : -1;
555	}	891	}
556	#endif	892	#endif
557		893
558	/* sendfile always needs emulation */	894	/* sendfile always needs emulation */
559	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count)	895	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
560	{	896	{
561	ssize_t res;	897	ssize_t res;
562		898
563	if (!count)	899	if (!count)
564	return 0;	900	return 0;
…		…
575	{	911	{
576	off_t sbytes;	912	off_t sbytes;
577	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);	913	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
578		914
579	if (res < 0 && sbytes)	915	if (res < 0 && sbytes)
580	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */	916	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
581	res = sbytes;	917	res = sbytes;
582	}	918	}
583		919
584	# elif __hpux	920	# elif __hpux
585	res = sendfile (ofd, ifd, offset, count, 0, 0);	921	res = sendfile (ofd, ifd, offset, count, 0, 0);
…		…
613	#endif	949	#endif
614	)	950	)
615	)	951	)
616	{	952	{
617	/* emulate sendfile. this is a major pain in the ass */	953	/* emulate sendfile. this is a major pain in the ass */
618	char buf[4096];	954	dBUF;
		955
619	res = 0;	956	res = 0;
620		957
621	while (count)	958	while (count)
622	{	959	{
623	ssize_t cnt;	960	ssize_t cnt;
624		961
625	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);	962	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
626		963
627	if (cnt <= 0)	964	if (cnt <= 0)
628	{	965	{
629	if (cnt && !res) res = -1;	966	if (cnt && !res) res = -1;
630	break;	967	break;
631	}	968	}
632		969
633	cnt = write (ofd, buf, cnt);	970	cnt = write (ofd, aio_buf, cnt);
634		971
635	if (cnt <= 0)	972	if (cnt <= 0)
636	{	973	{
637	if (cnt && !res) res = -1;	974	if (cnt && !res) res = -1;
638	break;	975	break;
…		…
646		983
647	return res;	984	return res;
648	}	985	}
649		986
650	/* read a full directory */	987	/* read a full directory */
651	static int scandir_ (const char *path, void **namesp)	988	static void scandir_ (aio_req req, worker *self)
652	{	989	{
653	DIR *dirp = opendir (path);	990	DIR *dirp;
654	union	991	union
655	{	992	{
656	struct dirent d;	993	struct dirent d;
657	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];	994	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
658	} u;	995	} *u;
659	struct dirent *entp;	996	struct dirent *entp;
660	char *name, *names;	997	char *name, *names;
661	int memlen = 4096;	998	int memlen = 4096;
662	int memofs = 0;	999	int memofs = 0;
663	int res = 0;	1000	int res = 0;
664	int errorno;	1001	int errorno;
665		1002
666	if (!dirp)	1003	LOCK (wrklock);
667	return -1;	1004	self->dirp = dirp = opendir (req->ptr1);
668		1005	self->dbuf = u = malloc (sizeof (*u));
		1006	req->flags |= FLAG_PTR2_FREE;
669	names = malloc (memlen);	1007	req->ptr2 = names = malloc (memlen);
		1008	UNLOCK (wrklock);
		1009
		1010	if (dirp && u && names)
		1011	for (;;)
		1012	{
		1013	errno = 0;
		1014	readdir_r (dirp, &u->d, &entp);
		1015
		1016	if (!entp)
		1017	break;
		1018
		1019	name = entp->d_name;
		1020
		1021	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
		1022	{
		1023	int len = strlen (name) + 1;
		1024
		1025	res++;
		1026
		1027	while (memofs + len > memlen)
		1028	{
		1029	memlen *= 2;
		1030	LOCK (wrklock);
		1031	req->ptr2 = names = realloc (names, memlen);
		1032	UNLOCK (wrklock);
		1033
		1034	if (!names)
		1035	break;
		1036	}
		1037
		1038	memcpy (names + memofs, name, len);
		1039	memofs += len;
		1040	}
		1041	}
		1042
		1043	if (errno)
		1044	res = -1;
		1045
		1046	req->result = res;
		1047	}
		1048
		1049	/*****************************************************************************/
		1050
		1051	static void *aio_proc (void *thr_arg)
		1052	{
		1053	aio_req req;
		1054	struct timespec ts;
		1055	worker *self = (worker *)thr_arg;
		1056
		1057	/* try to distribute timeouts somewhat evenly */
		1058	ts.tv_nsec = (((unsigned long)self + (unsigned long)ts.tv_sec) & 1023UL)
		1059	* (1000000000UL / 1024UL);
670		1060
671	for (;;)	1061	for (;;)
672	{	1062	{
673	errno = 0, readdir_r (dirp, &u.d, &entp);	1063	ts.tv_sec = time (0) + IDLE_TIMEOUT;
674		1064
675	if (!entp)	1065	LOCK (reqlock);
676	break;
677
678	name = entp->d_name;
679
680	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
681	{
682	int len = strlen (name) + 1;
683
684	res++;
685
686	while (memofs + len > memlen)
687	{
688	memlen *= 2;
689	names = realloc (names, memlen);
690	if (!names)
691	break;
692	}
693
694	memcpy (names + memofs, name, len);
695	memofs += len;
696	}
697	}
698
699	errorno = errno;
700	closedir (dirp);
701
702	if (errorno)
703	{
704	free (names);
705	errno = errorno;
706	res = -1;
707	}
708
709	*namesp = (void *)names;
710	return res;
711	}
712
713	/*****************************************************************************/
714
715	static void *aio_proc (void *thr_arg)
716	{
717	aio_req req;
718	int type;
719
720	do
721	{
722	pthread_mutex_lock (&reqlock);
723		1066
724	for (;;)	1067	for (;;)
725	{	1068	{
726	req = reqs;	1069	self->req = req = reqq_shift (&req_queue);
727
728	if (reqs)
729	{
730	reqs = reqs->next;
731	if (!reqs) reqe = 0;
732	}
733		1070
734	if (req)	1071	if (req)
735	break;	1072	break;
736		1073
		1074	++idle;
		1075
		1076	if (pthread_cond_timedwait (&reqwait, &reqlock, &ts)
		1077	== ETIMEDOUT)
		1078	{
		1079	if (idle > max_idle)
		1080	{
		1081	--idle;
		1082	UNLOCK (reqlock);
		1083	LOCK (wrklock);
		1084	--started;
		1085	UNLOCK (wrklock);
		1086	goto quit;
		1087	}
		1088
		1089	/* we are allowed to idle, so do so without any timeout */
737	pthread_cond_wait (&reqwait, &reqlock);	1090	pthread_cond_wait (&reqwait, &reqlock);
		1091	ts.tv_sec = time (0) + IDLE_TIMEOUT;
		1092	}
		1093
		1094	--idle;
738	}	1095	}
739		1096
740	pthread_mutex_unlock (&reqlock);	1097	--nready;
		1098
		1099	UNLOCK (reqlock);
741		1100
742	errno = 0; /* strictly unnecessary */	1101	errno = 0; /* strictly unnecessary */
743		1102
744	if (!req->cancelled)	1103	if (!(req->flags & FLAG_CANCELLED))
745	switch (req->type)	1104	switch (req->type)
746	{	1105	{
747	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;	1106	case REQ_READ: req->result = pread (req->int1, req->ptr1, req->size, req->offs); break;
748	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;	1107	case REQ_WRITE: req->result = pwrite (req->int1, req->ptr1, req->size, req->offs); break;
749		1108
750	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	1109	case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
751	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;	1110	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
752		1111
753	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	1112	case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
754	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	1113	case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
755	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	1114	case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
756		1115
757	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;	1116	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
758	case REQ_CLOSE: req->result = close (req->fd); break;	1117	case REQ_CLOSE: req->result = close (req->int1); break;
759	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	1118	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
760	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;	1119	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
761	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;	1120	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
762	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;	1121	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
763	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;	1122	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
		1123	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
		1124	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
764		1125
765	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	1126	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
766	case REQ_FSYNC: req->result = fsync (req->fd); break;	1127	case REQ_FSYNC: req->result = fsync (req->int1); break;
767	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;	1128	case REQ_READDIR: scandir_ (req, self); break;
768		1129
769	case REQ_SLEEP:	1130	case REQ_BUSY:
770	{	1131	{
771	struct timeval tv;	1132	struct timeval tv;
772		1133
773	tv.tv_sec = req->fd;	1134	tv.tv_sec = req->int1;
774	tv.tv_usec = req->fd2;	1135	tv.tv_usec = req->int2;
775		1136
776	req->result = select (0, 0, 0, 0, &tv);	1137	req->result = select (0, 0, 0, 0, &tv);
777	}	1138	}
778		1139
		1140	case REQ_GROUP:
		1141	case REQ_NOP:
		1142	break;
		1143
779	case REQ_QUIT:	1144	case REQ_QUIT:
780	break;	1145	goto quit;
781		1146
782	default:	1147	default:
783	req->result = ENOSYS;	1148	req->result = ENOSYS;
784	break;	1149	break;
785	}	1150	}
786		1151
787	req->errorno = errno;	1152	req->errorno = errno;
788		1153
789	pthread_mutex_lock (&reslock);	1154	LOCK (reslock);
790		1155
791	req->next = 0;	1156	++npending;
792		1157
793	if (rese)	1158	if (!reqq_push (&res_queue, req))
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 */	1159	/* write a dummy byte to the pipe so fh becomes ready */
803	write (respipe [1], &respipe, 1);	1160	write (respipe [1], &respipe, 1);
804	}
805		1161
806	pthread_mutex_unlock (&reslock);	1162	self->req = 0;
		1163	worker_clear (self);
		1164
		1165	UNLOCK (reslock);
807	}	1166	}
808	while (type != REQ_QUIT);	1167
		1168	quit:
		1169	LOCK (wrklock);
		1170	worker_free (self);
		1171	UNLOCK (wrklock);
809		1172
810	return 0;	1173	return 0;
811	}	1174	}
812		1175
813	/*****************************************************************************/	1176	/*****************************************************************************/
814		1177
815	static void atfork_prepare (void)	1178	static void atfork_prepare (void)
816	{	1179	{
817	pthread_mutex_lock (&reqlock);	1180	LOCK (wrklock);
818	pthread_mutex_lock (&reslock);	1181	LOCK (reqlock);
		1182	LOCK (reslock);
819	#if !HAVE_PREADWRITE	1183	#if !HAVE_PREADWRITE
820	pthread_mutex_lock (&preadwritelock);	1184	LOCK (preadwritelock);
821	#endif	1185	#endif
822	#if !HAVE_READDIR_R	1186	#if !HAVE_READDIR_R
823	pthread_mutex_lock (&readdirlock);	1187	LOCK (readdirlock);
824	#endif	1188	#endif
825	}	1189	}
826		1190
827	static void atfork_parent (void)	1191	static void atfork_parent (void)
828	{	1192	{
829	#if !HAVE_READDIR_R	1193	#if !HAVE_READDIR_R
830	pthread_mutex_unlock (&readdirlock);	1194	UNLOCK (readdirlock);
831	#endif	1195	#endif
832	#if !HAVE_PREADWRITE	1196	#if !HAVE_PREADWRITE
833	pthread_mutex_unlock (&preadwritelock);	1197	UNLOCK (preadwritelock);
834	#endif	1198	#endif
835	pthread_mutex_unlock (&reslock);	1199	UNLOCK (reslock);
836	pthread_mutex_unlock (&reqlock);	1200	UNLOCK (reqlock);
		1201	UNLOCK (wrklock);
837	}	1202	}
838		1203
839	static void atfork_child (void)	1204	static void atfork_child (void)
840	{	1205	{
841	aio_req prv;	1206	aio_req prv;
842		1207
843	started = 0;	1208	while (prv = reqq_shift (&req_queue))
		1209	req_free (prv);
844		1210
845	while (reqs)	1211	while (prv = reqq_shift (&res_queue))
		1212	req_free (prv);
		1213
		1214	while (wrk_first.next != &wrk_first)
846	{	1215	{
847	prv = reqs;	1216	worker *wrk = wrk_first.next;
848	reqs = prv->next;	1217
		1218	if (wrk->req)
		1219	req_free (wrk->req);
		1220
		1221	worker_clear (wrk);
849	req_free (prv);	1222	worker_free (wrk);
850	}	1223	}
851		1224
852	reqs = reqe = 0;	1225	started = 0;
853		1226	idle = 0;
854	while (ress)	1227	nreqs = 0;
855	{	1228	nready = 0;
856	prv = ress;	1229	npending = 0;
857	ress = prv->next;
858	req_free (prv);
859	}
860
861	ress = rese = 0;
862		1230
863	close (respipe [0]);	1231	close (respipe [0]);
864	close (respipe [1]);	1232	close (respipe [1]);
865	create_pipe ();	1233	create_pipe ();
866		1234
867	atfork_parent ();	1235	atfork_parent ();
868	}	1236	}
869		1237
870	#define dREQ \	1238	#define dREQ \
871	aio_req req; \	1239	aio_req req; \
		1240	int req_pri = next_pri; \
		1241	next_pri = DEFAULT_PRI + PRI_BIAS; \
872	\	1242	\
873	if (SvOK (callback) && !SvROK (callback)) \	1243	if (SvOK (callback) && !SvROK (callback)) \
874	croak ("callback must be undef or of reference type"); \	1244	croak ("callback must be undef or of reference type"); \
875	\	1245	\
876	Newz (0, req, 1, aio_cb); \	1246	Newz (0, req, 1, aio_cb); \
877	if (!req) \	1247	if (!req) \
878	croak ("out of memory during aio_req allocation"); \	1248	croak ("out of memory during aio_req allocation"); \
879	\	1249	\
880	req->callback = newSVsv (callback)	1250	req->callback = newSVsv (callback); \
		1251	req->pri = req_pri
881		1252
882	#define REQ_SEND \	1253	#define REQ_SEND \
883	req_send (req); \	1254	req_send (req); \
884	\	1255	\
885	if (GIMME_V != G_VOID) \	1256	if (GIMME_V != G_VOID) \
…		…
890	PROTOTYPES: ENABLE	1261	PROTOTYPES: ENABLE
891		1262
892	BOOT:	1263	BOOT:
893	{	1264	{
894	HV *stash = gv_stashpv ("IO::AIO", 1);	1265	HV *stash = gv_stashpv ("IO::AIO", 1);
		1266
895	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	1267	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
896	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	1268	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
897	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));	1269	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
		1270	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
		1271	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
		1272	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
898		1273
899	create_pipe ();	1274	create_pipe ();
900	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	1275	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
901	}	1276	}
902		1277
903	void	1278	void
904	min_parallel (nthreads)	1279	max_poll_reqs (int nreqs)
905	int nthreads
906	PROTOTYPE: $	1280	PROTOTYPE: $
		1281	CODE:
		1282	max_poll_reqs = nreqs;
907		1283
908	void	1284	void
909	max_parallel (nthreads)	1285	max_poll_time (double nseconds)
910	int nthreads
911	PROTOTYPE: $	1286	PROTOTYPE: $
		1287	CODE:
		1288	max_poll_time = nseconds * AIO_TICKS;
		1289
		1290	void
		1291	min_parallel (int nthreads)
		1292	PROTOTYPE: $
		1293
		1294	void
		1295	max_parallel (int nthreads)
		1296	PROTOTYPE: $
		1297
		1298	void
		1299	max_idle (int nthreads)
		1300	PROTOTYPE: $
		1301	CODE:
		1302	set_max_idle (nthreads);
912		1303
913	int	1304	int
914	max_outstanding (nreqs)	1305	max_outstanding (int maxreqs)
915	int nreqs	1306	PROTOTYPE: $
916	PROTOTYPE: $
917	CODE:	1307	CODE:
918	RETVAL = max_outstanding;	1308	RETVAL = max_outstanding;
919	max_outstanding = nreqs;	1309	max_outstanding = maxreqs;
		1310	OUTPUT:
		1311	RETVAL
920		1312
921	void	1313	void
922	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	1314	aio_open (pathname,flags,mode,callback=&PL_sv_undef)
923	SV * pathname	1315	SV8 * pathname
924	int flags	1316	int flags
925	int mode	1317	int mode
926	SV * callback	1318	SV * callback
927	PROTOTYPE: $$$;$	1319	PROTOTYPE: $$$;$
928	PPCODE:	1320	PPCODE:
929	{	1321	{
930	dREQ;	1322	dREQ;
931		1323
932	req->type = REQ_OPEN;	1324	req->type = REQ_OPEN;
933	req->data = newSVsv (pathname);	1325	req->sv1 = newSVsv (pathname);
934	req->dataptr = SvPVbyte_nolen (req->data);	1326	req->ptr1 = SvPVbyte_nolen (req->sv1);
935	req->fd = flags;	1327	req->int1 = flags;
936	req->mode = mode;	1328	req->mode = mode;
937		1329
938	REQ_SEND;	1330	REQ_SEND;
939	}	1331	}
940		1332
…		…
950	PPCODE:	1342	PPCODE:
951	{	1343	{
952	dREQ;	1344	dREQ;
953		1345
954	req->type = ix;	1346	req->type = ix;
955	req->fh = newSVsv (fh);	1347	req->fh = newSVsv (fh);
956	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1348	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
957		1349
958	REQ_SEND (req);	1350	REQ_SEND (req);
959	}	1351	}
960		1352
961	void	1353	void
962	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1354	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
963	SV * fh	1355	SV * fh
964	UV offset	1356	UV offset
965	UV length	1357	UV length
966	SV * data	1358	SV8 * data
967	UV dataoffset	1359	UV dataoffset
968	SV * callback	1360	SV * callback
969	ALIAS:	1361	ALIAS:
970	aio_read = REQ_READ	1362	aio_read = REQ_READ
971	aio_write = REQ_WRITE	1363	aio_write = REQ_WRITE
972	PROTOTYPE: $$$$$;$	1364	PROTOTYPE: $$$$$;$
973	PPCODE:	1365	PPCODE:
974	{	1366	{
975	aio_req req;
976	STRLEN svlen;	1367	STRLEN svlen;
977	char *svptr = SvPVbyte (data, svlen);	1368	char *svptr = SvPVbyte (data, svlen);
978		1369
979	SvUPGRADE (data, SVt_PV);	1370	SvUPGRADE (data, SVt_PV);
980	SvPOK_on (data);	1371	SvPOK_on (data);
…		…
1002		1393
1003	{	1394	{
1004	dREQ;	1395	dREQ;
1005		1396
1006	req->type = ix;	1397	req->type = ix;
1007	req->fh = newSVsv (fh);	1398	req->fh = newSVsv (fh);
1008	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1399	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
1009	: IoOFP (sv_2io (fh)));	1400	: IoOFP (sv_2io (fh)));
1010	req->offset = offset;	1401	req->offs = offset;
1011	req->length = length;	1402	req->size = length;
1012	req->data = SvREFCNT_inc (data);	1403	req->sv1 = SvREFCNT_inc (data);
1013	req->dataptr = (char *)svptr + dataoffset;	1404	req->ptr1 = (char *)svptr + dataoffset;
		1405	req->stroffset = dataoffset;
1014		1406
1015	if (!SvREADONLY (data))	1407	if (!SvREADONLY (data))
1016	{	1408	{
1017	SvREADONLY_on (data);	1409	SvREADONLY_on (data);
1018	req->data2ptr = (void *)data;	1410	req->flags |= FLAG_SV1_RO_OFF;
1019	}	1411	}
1020		1412
1021	REQ_SEND;	1413	REQ_SEND;
1022	}	1414	}
		1415	}
		1416
		1417	void
		1418	aio_readlink (path,callback=&PL_sv_undef)
		1419	SV8 * path
		1420	SV * callback
		1421	PROTOTYPE: $$;$
		1422	PPCODE:
		1423	{
		1424	SV *data;
		1425	dREQ;
		1426
		1427	data = newSV (NAME_MAX);
		1428	SvPOK_on (data);
		1429
		1430	req->type = REQ_READLINK;
		1431	req->fh = newSVsv (path);
		1432	req->ptr2 = SvPVbyte_nolen (req->fh);
		1433	req->sv1 = data;
		1434	req->ptr1 = SvPVbyte_nolen (data);
		1435
		1436	REQ_SEND;
1023	}	1437	}
1024		1438
1025	void	1439	void
1026	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1440	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)
1027	SV * out_fh	1441	SV * out_fh
…		…
1033	PPCODE:	1447	PPCODE:
1034	{	1448	{
1035	dREQ;	1449	dREQ;
1036		1450
1037	req->type = REQ_SENDFILE;	1451	req->type = REQ_SENDFILE;
1038	req->fh = newSVsv (out_fh);	1452	req->fh = newSVsv (out_fh);
1039	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1453	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1040	req->fh2 = newSVsv (in_fh);	1454	req->sv2 = newSVsv (in_fh);
1041	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1455	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1042	req->offset = in_offset;	1456	req->offs = in_offset;
1043	req->length = length;	1457	req->size = length;
1044		1458
1045	REQ_SEND;	1459	REQ_SEND;
1046	}	1460	}
1047		1461
1048	void	1462	void
…		…
1055	PPCODE:	1469	PPCODE:
1056	{	1470	{
1057	dREQ;	1471	dREQ;
1058		1472
1059	req->type = REQ_READAHEAD;	1473	req->type = REQ_READAHEAD;
1060	req->fh = newSVsv (fh);	1474	req->fh = newSVsv (fh);
1061	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1475	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1062	req->offset = offset;	1476	req->offs = offset;
1063	req->length = length;	1477	req->size = length;
1064		1478
1065	REQ_SEND;	1479	REQ_SEND;
1066	}	1480	}
1067		1481
1068	void	1482	void
1069	aio_stat (fh_or_path,callback=&PL_sv_undef)	1483	aio_stat (fh_or_path,callback=&PL_sv_undef)
1070	SV * fh_or_path	1484	SV8 * fh_or_path
1071	SV * callback	1485	SV * callback
1072	ALIAS:	1486	ALIAS:
1073	aio_stat = REQ_STAT	1487	aio_stat = REQ_STAT
1074	aio_lstat = REQ_LSTAT	1488	aio_lstat = REQ_LSTAT
1075	PPCODE:	1489	PPCODE:
1076	{	1490	{
1077	dREQ;	1491	dREQ;
1078		1492
1079	New (0, req->statdata, 1, Stat_t);	1493	req->ptr2 = malloc (sizeof (Stat_t));
1080	if (!req->statdata)	1494	if (!req->ptr2)
1081	{	1495	{
1082	req_free (req);	1496	req_free (req);
1083	croak ("out of memory during aio_req->statdata allocation");	1497	croak ("out of memory during aio_stat statdata allocation");
1084	}	1498	}
		1499
		1500	req->flags |= FLAG_PTR2_FREE;
1085		1501
1086	if (SvPOK (fh_or_path))	1502	if (SvPOK (fh_or_path))
1087	{	1503	{
1088	req->type = ix;	1504	req->type = ix;
1089	req->data = newSVsv (fh_or_path);	1505	req->sv1 = newSVsv (fh_or_path);
1090	req->dataptr = SvPVbyte_nolen (req->data);	1506	req->ptr1 = SvPVbyte_nolen (req->sv1);
1091	}	1507	}
1092	else	1508	else
1093	{	1509	{
1094	req->type = REQ_FSTAT;	1510	req->type = REQ_FSTAT;
1095	req->fh = newSVsv (fh_or_path);	1511	req->fh = newSVsv (fh_or_path);
1096	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1512	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1097	}	1513	}
1098		1514
1099	REQ_SEND;	1515	REQ_SEND;
1100	}	1516	}
1101		1517
1102	void	1518	void
1103	aio_unlink (pathname,callback=&PL_sv_undef)	1519	aio_unlink (pathname,callback=&PL_sv_undef)
1104	SV * pathname	1520	SV8 * pathname
1105	SV * callback	1521	SV * callback
1106	ALIAS:	1522	ALIAS:
1107	aio_unlink = REQ_UNLINK	1523	aio_unlink = REQ_UNLINK
1108	aio_rmdir = REQ_RMDIR	1524	aio_rmdir = REQ_RMDIR
1109	aio_readdir = REQ_READDIR	1525	aio_readdir = REQ_READDIR
1110	PPCODE:	1526	PPCODE:
1111	{	1527	{
1112	dREQ;	1528	dREQ;
1113		1529
1114	req->type = ix;	1530	req->type = ix;
1115	req->data = newSVsv (pathname);	1531	req->sv1 = newSVsv (pathname);
1116	req->dataptr = SvPVbyte_nolen (req->data);	1532	req->ptr1 = SvPVbyte_nolen (req->sv1);
1117		1533
1118	REQ_SEND;	1534	REQ_SEND;
1119	}	1535	}
1120		1536
1121	void	1537	void
1122	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1538	aio_link (oldpath,newpath,callback=&PL_sv_undef)
1123	SV * oldpath	1539	SV8 * oldpath
1124	SV * newpath	1540	SV8 * newpath
1125	SV * callback	1541	SV * callback
1126	ALIAS:	1542	ALIAS:
1127	aio_link = REQ_LINK	1543	aio_link = REQ_LINK
1128	aio_symlink = REQ_SYMLINK	1544	aio_symlink = REQ_SYMLINK
1129	aio_rename = REQ_RENAME	1545	aio_rename = REQ_RENAME
1130	PPCODE:	1546	PPCODE:
1131	{	1547	{
1132	dREQ;	1548	dREQ;
1133		1549
1134	req->type = ix;	1550	req->type = ix;
1135	req->fh = newSVsv (oldpath);	1551	req->fh = newSVsv (oldpath);
1136	req->data2ptr = SvPVbyte_nolen (req->fh);	1552	req->ptr2 = SvPVbyte_nolen (req->fh);
1137	req->data = newSVsv (newpath);	1553	req->sv1 = newSVsv (newpath);
1138	req->dataptr = SvPVbyte_nolen (req->data);	1554	req->ptr1 = SvPVbyte_nolen (req->sv1);
1139		1555
1140	REQ_SEND;	1556	REQ_SEND;
1141	}	1557	}
1142		1558
1143	void	1559	void
1144	aio_sleep (delay,callback=&PL_sv_undef)	1560	aio_mknod (pathname,mode,dev,callback=&PL_sv_undef)
1145	double delay	1561	SV8 * pathname
1146	SV * callback	1562	SV * callback
		1563	UV mode
		1564	UV dev
1147	PPCODE:	1565	PPCODE:
1148	{	1566	{
1149	dREQ;	1567	dREQ;
		1568
		1569	req->type = REQ_MKNOD;
		1570	req->sv1 = newSVsv (pathname);
		1571	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1572	req->mode = (mode_t)mode;
		1573	req->offs = dev;
		1574
		1575	REQ_SEND;
		1576	}
1150		1577
		1578	void
		1579	aio_busy (delay,callback=&PL_sv_undef)
		1580	double delay
		1581	SV * callback
		1582	PPCODE:
		1583	{
		1584	dREQ;
		1585
1151	req->type = REQ_SLEEP;	1586	req->type = REQ_BUSY;
1152	req->fd = delay < 0. ? 0 : delay;	1587	req->int1 = delay < 0. ? 0 : delay;
1153	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1588	req->int2 = delay < 0. ? 0 : 1000. * (delay - req->int1);
1154		1589
1155	REQ_SEND;	1590	REQ_SEND;
1156	}	1591	}
1157		1592
1158	void	1593	void
…		…
1160	SV * callback	1595	SV * callback
1161	PROTOTYPE: ;$	1596	PROTOTYPE: ;$
1162	PPCODE:	1597	PPCODE:
1163	{	1598	{
1164	dREQ;	1599	dREQ;
		1600
1165	req->type = REQ_GROUP;	1601	req->type = REQ_GROUP;
1166	req->grp_next = req;
1167	req->grp_prev = req;
1168		1602
1169	req_send (req);	1603	req_send (req);
1170	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1604	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1171	}	1605	}
		1606
		1607	void
		1608	aio_nop (callback=&PL_sv_undef)
		1609	SV * callback
		1610	PPCODE:
		1611	{
		1612	dREQ;
		1613
		1614	req->type = REQ_NOP;
		1615
		1616	REQ_SEND;
		1617	}
		1618
		1619	int
		1620	aioreq_pri (int pri = 0)
		1621	PROTOTYPE: ;$
		1622	CODE:
		1623	RETVAL = next_pri - PRI_BIAS;
		1624	if (items > 0)
		1625	{
		1626	if (pri < PRI_MIN) pri = PRI_MIN;
		1627	if (pri > PRI_MAX) pri = PRI_MAX;
		1628	next_pri = pri + PRI_BIAS;
		1629	}
		1630	OUTPUT:
		1631	RETVAL
		1632
		1633	void
		1634	aioreq_nice (int nice = 0)
		1635	CODE:
		1636	nice = next_pri - nice;
		1637	if (nice < PRI_MIN) nice = PRI_MIN;
		1638	if (nice > PRI_MAX) nice = PRI_MAX;
		1639	next_pri = nice + PRI_BIAS;
1172		1640
1173	void	1641	void
1174	flush ()	1642	flush ()
1175	PROTOTYPE:	1643	PROTOTYPE:
1176	CODE:	1644	CODE:
…		…
1178	{	1646	{
1179	poll_wait ();	1647	poll_wait ();
1180	poll_cb ();	1648	poll_cb ();
1181	}	1649	}
1182		1650
1183	void	1651	int
1184	poll()	1652	poll()
1185	PROTOTYPE:	1653	PROTOTYPE:
1186	CODE:	1654	CODE:
1187	if (nreqs)
1188	{
1189	poll_wait ();	1655	poll_wait ();
1190	poll_cb ();	1656	RETVAL = poll_cb ();
1191	}	1657	OUTPUT:
		1658	RETVAL
1192		1659
1193	int	1660	int
1194	poll_fileno()	1661	poll_fileno()
1195	PROTOTYPE:	1662	PROTOTYPE:
1196	CODE:	1663	CODE:
…		…
1208		1675
1209	void	1676	void
1210	poll_wait()	1677	poll_wait()
1211	PROTOTYPE:	1678	PROTOTYPE:
1212	CODE:	1679	CODE:
1213	if (nreqs)
1214	poll_wait ();	1680	poll_wait ();
1215		1681
1216	int	1682	int
1217	nreqs()	1683	nreqs()
1218	PROTOTYPE:	1684	PROTOTYPE:
1219	CODE:	1685	CODE:
1220	RETVAL = nreqs;	1686	RETVAL = nreqs;
1221	OUTPUT:	1687	OUTPUT:
1222	RETVAL	1688	RETVAL
1223		1689
1224	PROTOTYPES: DISABLE	1690	int
1225		1691	nready()
1226	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1227
1228	void
1229	cancel (aio_req_ornot req)
1230	PROTOTYPE:	1692	PROTOTYPE:
1231	CODE:	1693	CODE:
		1694	RETVAL = get_nready ();
		1695	OUTPUT:
		1696	RETVAL
		1697
		1698	int
		1699	npending()
		1700	PROTOTYPE:
		1701	CODE:
		1702	RETVAL = get_npending ();
		1703	OUTPUT:
		1704	RETVAL
		1705
		1706	int
		1707	nthreads()
		1708	PROTOTYPE:
		1709	CODE:
		1710	if (WORDACCESS_UNSAFE) LOCK (wrklock);
		1711	RETVAL = started;
		1712	if (WORDACCESS_UNSAFE) UNLOCK (wrklock);
		1713	OUTPUT:
		1714	RETVAL
		1715
		1716	PROTOTYPES: DISABLE
		1717
		1718	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
		1719
		1720	void
		1721	cancel (aio_req_ornot req)
		1722	CODE:
1232	req_cancel (req);	1723	req_cancel (req);
		1724
		1725	void
		1726	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
		1727	CODE:
		1728	SvREFCNT_dec (req->callback);
		1729	req->callback = newSVsv (callback);
1233		1730
1234	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1731	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1235		1732
1236	void	1733	void
1237	add (aio_req grp, ...)	1734	add (aio_req grp, ...)
1238	PPCODE:	1735	PPCODE:
1239	{	1736	{
1240	int i;	1737	int i;
		1738	aio_req req;
		1739
		1740	if (grp->int1 == 2)
		1741	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1241		1742
1242	for (i = 1; i < items; ++i )	1743	for (i = 1; i < items; ++i )
1243	{	1744	{
1244	if (GIMME_V != G_VOID)	1745	if (GIMME_V != G_VOID)
1245	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1746	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1246		1747
1247	aio_req req = SvAIO_REQ (ST (i));	1748	req = SvAIO_REQ (ST (i));
1248		1749
1249	if (req)	1750	if (req)
1250	{	1751	{
1251	req->grp_prev = grp;	1752	++grp->size;
1252	req->grp_next = grp->grp_next;
1253	grp->grp_next->grp_prev = req;
1254	grp->grp_next = req;
1255
1256	req->grp = grp;	1753	req->grp = grp;
		1754
		1755	req->grp_prev = 0;
		1756	req->grp_next = grp->grp_first;
		1757
		1758	if (grp->grp_first)
		1759	grp->grp_first->grp_prev = req;
		1760
		1761	grp->grp_first = req;
1257	}	1762	}
1258	}	1763	}
1259	}	1764	}
1260		1765
1261	void	1766	void
		1767	cancel_subs (aio_req_ornot req)
		1768	CODE:
		1769	req_cancel_subs (req);
		1770
		1771	void
1262	result (aio_req grp, ...)	1772	result (aio_req grp, ...)
		1773	CODE:
		1774	{
		1775	int i;
		1776	AV *av;
		1777
		1778	grp->errorno = errno;
		1779
		1780	av = newAV ();
		1781
		1782	for (i = 1; i < items; ++i )
		1783	av_push (av, newSVsv (ST (i)));
		1784
		1785	SvREFCNT_dec (grp->sv1);
		1786	grp->sv1 = (SV *)av;
		1787	}
		1788
		1789	void
		1790	errno (aio_req grp, int errorno = errno)
		1791	CODE:
		1792	grp->errorno = errorno;
		1793
		1794	void
		1795	limit (aio_req grp, int limit)
1263	CODE:	1796	CODE:
1264	{	1797	grp->int2 = limit;
1265	int i;	1798	aio_grp_feed (grp);
1266	AV *av = newAV ();
1267		1799
1268	if (grp->data)	1800	void
		1801	feed (aio_req grp, SV *callback=&PL_sv_undef)
		1802	CODE:
		1803	{
1269	SvREFCNT_dec (grp->data);	1804	SvREFCNT_dec (grp->sv2);
		1805	grp->sv2 = newSVsv (callback);
1270		1806
1271	for (i = 1; i < items; ++i )	1807	if (grp->int2 <= 0)
1272	av_push (av, newSVsv (ST (i)));	1808	grp->int2 = 2;
1273		1809
1274	grp->data = (SV *)av;	1810	aio_grp_feed (grp);
1275	}	1811	}
1276		1812

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