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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.52 by root, Sun Oct 22 22:14:54 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 *volatile next;	113	struct aio_cb *volatile next;
70		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
		131	SV *self; /* the perl counterpart of this request, if any */
71	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;	132	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
72
73	SV *self; /* the perl counterpart of this request, if any */
74
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 ();
106	static void req_invoke (aio_req req);	325	static void req_invoke (aio_req req);
107	static void req_free (aio_req req);	326	static void req_free (aio_req req);
		327	static void req_cancel (aio_req req);
108		328
109	/* must be called at most once */	329	/* must be called at most once */
110	static SV *req_sv (aio_req req, const char *klass)	330	static SV *req_sv (aio_req req, const char *klass)
111	{	331	{
112	if (!req->self)	332	if (!req->self)
…		…
118	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)));
119	}	339	}
120		340
121	static aio_req SvAIO_REQ (SV *sv)	341	static aio_req SvAIO_REQ (SV *sv)
122	{	342	{
		343	MAGIC *mg;
		344
123	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	345	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))
124	croak ("object of class " AIO_REQ_KLASS " expected");	346	croak ("object of class " AIO_REQ_KLASS " expected");
125		347
126	MAGIC *mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	348	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
127		349
128	return mg ? (aio_req)mg->mg_ptr : 0;	350	return mg ? (aio_req)mg->mg_ptr : 0;
129	}	351	}
130		352
131	static void aio_grp_feed (aio_req grp)	353	static void aio_grp_feed (aio_req grp)
132	{	354	{
133	while (grp->length < grp->fd2)	355	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
134	{	356	{
135	int old_len = grp->length;	357	int old_len = grp->size;
136		358
137	if (grp->fh2 && SvOK (grp->fh2))	359	if (grp->sv2 && SvOK (grp->sv2))
138	{	360	{
139	dSP;	361	dSP;
140		362
141	ENTER;	363	ENTER;
142	SAVETMPS;	364	SAVETMPS;
143	PUSHMARK (SP);	365	PUSHMARK (SP);
144	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	366	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
145	PUTBACK;	367	PUTBACK;
146	call_sv (grp->fh2, G_VOID | G_EVAL);	368	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
147	SPAGAIN;	369	SPAGAIN;
148	FREETMPS;	370	FREETMPS;
149	LEAVE;	371	LEAVE;
150	}	372	}
151		373
152	/* stop if no progress has been made */	374	/* stop if no progress has been made */
153	if (old_len == grp->length)	375	if (old_len == grp->size)
154	{	376	{
155	SvREFCNT_dec (grp->fh2);	377	SvREFCNT_dec (grp->sv2);
156	grp->fh2 = 0;	378	grp->sv2 = 0;
157	break;	379	break;
158	}	380	}
159	}	381	}
160	}	382	}
161		383
162	static void aio_grp_dec (aio_req grp)	384	static void aio_grp_dec (aio_req grp)
163	{	385	{
164	--grp->length;	386	--grp->size;
165		387
166	/* call feeder, if applicable */	388	/* call feeder, if applicable */
167	aio_grp_feed (grp);	389	aio_grp_feed (grp);
168		390
169	/* finish, if done */	391	/* finish, if done */
170	if (!grp->length && grp->fd)	392	if (!grp->size && grp->int1)
171	{	393	{
172	req_invoke (grp);	394	req_invoke (grp);
173	req_free (grp);	395	req_free (grp);
174	}	396	}
175	}	397	}
176		398
177	static void poll_wait ()	399	static void req_invoke (aio_req req)
178	{	400	{
179	if (nreqs && !ress)	401	dSP;
		402
		403	if (req->flags & FLAG_SV1_RO_OFF)
		404	SvREADONLY_off (req->sv1);
		405
		406	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
180	{	407	{
181	fd_set rfd;	408	ENTER;
182	FD_ZERO(&rfd);	409	SAVETMPS;
183	FD_SET(respipe [0], &rfd);	410	PUSHMARK (SP);
		411	EXTEND (SP, 1);
184		412
185	select (respipe [0] + 1, &rfd, 0, 0, 0);	413	switch (req->type)
		414	{
		415	case REQ_READDIR:
		416	{
		417	SV *rv = &PL_sv_undef;
		418
		419	if (req->result >= 0)
		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	{
		429	SV *sv = newSVpv (buf, 0);
		430
		431	av_store (av, i, sv);
		432	buf += SvCUR (sv) + 1;
		433	}
		434
		435	rv = sv_2mortal (newRV_noinc ((SV *)av));
		436	}
		437
		438	PUSHs (rv);
		439	}
		440	break;
		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);
		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;
		503	}
		504
		505	errno = req->errorno;
		506
		507	PUTBACK;
		508	call_sv (req->callback, G_VOID | G_EVAL);
		509	SPAGAIN;
		510
		511	FREETMPS;
		512	LEAVE;
186	}	513	}
187	}
188		514
189	static void req_invoke (aio_req req)	515	if (req->grp)
190	{
191	dSP;
192	int errorno = errno;
193
194	if (req->cancelled || !SvOK (req->callback))
195	return;
196
197	errno = req->errorno;
198
199	ENTER;
200	SAVETMPS;
201	PUSHMARK (SP);
202	EXTEND (SP, 1);
203
204	switch (req->type)
205	{	516	{
206	case REQ_READDIR:	517	aio_req grp = req->grp;
207	{
208	SV *rv = &PL_sv_undef;
209		518
210	if (req->result >= 0)	519	/* unlink request */
211	{	520	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
212	char *buf = req->data2ptr;	521	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
213	AV *av = newAV ();
214		522
215	while (req->result)	523	if (grp->grp_first == req)
216	{	524	grp->grp_first = req->grp_next;
217	SV *sv = newSVpv (buf, 0);
218		525
219	av_push (av, sv);	526	aio_grp_dec (grp);
220	buf += SvCUR (sv) + 1;
221	req->result--;
222	}
223
224	rv = sv_2mortal (newRV_noinc ((SV *)av));
225	}
226
227	PUSHs (rv);
228	}
229	break;
230
231	case REQ_OPEN:
232	{
233	/* convert fd to fh */
234	SV *fh;
235
236	PUSHs (sv_2mortal (newSViv (req->result)));
237	PUTBACK;
238	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
239	SPAGAIN;
240
241	fh = SvREFCNT_inc (POPs);
242
243	PUSHMARK (SP);
244	XPUSHs (sv_2mortal (fh));
245	}
246	break;
247
248	case REQ_GROUP:
249	req->fd = 2; /* mark group as finished */
250
251	if (req->data)
252	{
253	int i;
254	AV *av = (AV *)req->data;
255
256	EXTEND (SP, AvFILL (av) + 1);
257	for (i = 0; i <= AvFILL (av); ++i)
258	PUSHs (*av_fetch (av, i, 0));
259	}
260	break;
261
262	case REQ_SLEEP:
263	break;
264
265	default:
266	PUSHs (sv_2mortal (newSViv (req->result)));
267	break;
268	}	527	}
269
270
271	PUTBACK;
272	call_sv (req->callback, G_VOID | G_EVAL);
273	SPAGAIN;
274
275	FREETMPS;
276	LEAVE;
277
278	errno = errorno;
279		528
280	if (SvTRUE (ERRSV))	529	if (SvTRUE (ERRSV))
281	{	530	{
282	req_free (req);	531	req_free (req);
283	croak (0);	532	croak (0);
284	}	533	}
285	}	534	}
286		535
287	static void req_free (aio_req req)	536	static void req_free (aio_req req)
288	{	537	{
289	if (req->grp)
290	{
291	aio_req grp = req->grp;
292
293	/* unlink request */
294	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
295	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
296
297	if (grp->grp_first == req)
298	grp->grp_first = req->grp_next;
299
300	aio_grp_dec (grp);
301	}
302
303	if (req->self)	538	if (req->self)
304	{	539	{
305	sv_unmagic (req->self, PERL_MAGIC_ext);	540	sv_unmagic (req->self, PERL_MAGIC_ext);
306	SvREFCNT_dec (req->self);	541	SvREFCNT_dec (req->self);
307	}	542	}
308		543
309	SvREFCNT_dec (req->data);
310	SvREFCNT_dec (req->fh);	544	SvREFCNT_dec (req->fh);
		545	SvREFCNT_dec (req->sv1);
311	SvREFCNT_dec (req->fh2);	546	SvREFCNT_dec (req->sv2);
312	SvREFCNT_dec (req->callback);	547	SvREFCNT_dec (req->callback);
313	Safefree (req->statdata);
314		548
315	if (req->type == REQ_READDIR && req->result >= 0)	549	if (req->flags & FLAG_PTR2_FREE)
316	free (req->data2ptr);	550	free (req->ptr2);
317		551
318	Safefree (req);	552	Safefree (req);
319	}	553	}
320		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
321	static void req_cancel (aio_req req)	569	static void req_cancel (aio_req req)
322	{	570	{
323	req->cancelled = 1;	571	req->flags |= FLAG_CANCELLED;
324		572
325	if (req->type == REQ_GROUP)	573	req_cancel_subs (req);
326	{
327	aio_req sub;
328
329	for (sub = req->grp_first; sub; sub = sub->grp_next)
330	req_cancel (sub);
331	}
332	}
333
334	static int poll_cb ()
335	{
336	dSP;
337	int count = 0;
338	int do_croak = 0;
339	aio_req req;
340
341	for (;;)
342	{
343	pthread_mutex_lock (&reslock);
344	req = ress;
345
346	if (req)
347	{
348	ress = req->next;
349
350	if (!ress)
351	{
352	/* read any signals sent by the worker threads */
353	char buf [32];
354	while (read (respipe [0], buf, 32) == 32)
355	;
356
357	rese = 0;
358	}
359	}
360
361	pthread_mutex_unlock (&reslock);
362
363	if (!req)
364	break;
365
366	--nreqs;
367
368	if (req->type == REQ_QUIT)
369	started--;
370	else if (req->type == REQ_GROUP && req->length)
371	{
372	req->fd = 1; /* mark request as delayed */
373	continue;
374	}
375	else
376	{
377	if (req->type == REQ_READ)
378	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
379
380	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
381	SvREADONLY_off (req->data);
382
383	if (req->statdata)
384	{
385	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
386	PL_laststatval = req->result;
387	PL_statcache = *(req->statdata);
388	}
389
390	req_invoke (req);
391
392	count++;
393	}
394
395	req_free (req);
396	}
397
398	return count;
399	}	574	}
400		575
401	static void *aio_proc(void *arg);	576	static void *aio_proc(void *arg);
402		577
403	static void start_thread (void)	578	static void start_thread (void)
404	{	579	{
405	sigset_t fullsigset, oldsigset;	580	sigset_t fullsigset, oldsigset;
406	pthread_t tid;
407	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");
408		587
409	pthread_attr_init (&attr);	588	pthread_attr_init (&attr);
410	pthread_attr_setstacksize (&attr, STACKSIZE);	589	pthread_attr_setstacksize (&attr, STACKSIZE);
411	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
412		594
413	sigfillset (&fullsigset);	595	sigfillset (&fullsigset);
		596
		597	LOCK (wrklock);
414	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);	598	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
415		599
416	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)	600	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
417	started++;
418
419	sigprocmask (SIG_SETMASK, &oldsigset, 0);
420	}
421
422	static void req_send (aio_req req)
423	{
424	while (started < wanted && nreqs >= started)
425	start_thread ();
426
427	++nreqs;
428
429	pthread_mutex_lock (&reqlock);
430
431	req->next = 0;
432
433	if (reqe)
434	{	601	{
435	reqe->next = req;	602	wrk->prev = &wrk_first;
436	reqe = req;	603	wrk->next = wrk_first.next;
		604	wrk_first.next->prev = wrk;
		605	wrk_first.next = wrk;
		606	++started;
437	}	607	}
438	else	608	else
439	reqe = reqs = req;	609	free (wrk);
440		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);
441	pthread_cond_signal (&reqwait);	634	pthread_cond_signal (&reqwait);
442	pthread_mutex_unlock (&reqlock);	635	UNLOCK (reqlock);
443		636
444	if (nreqs > max_outstanding)	637	maybe_start_thread ();
445	for (;;)
446	{
447	poll_cb ();
448
449	if (nreqs <= max_outstanding)
450	break;
451
452	poll_wait ();
453	}
454	}	638	}
455		639
456	static void end_thread (void)	640	static void end_thread (void)
457	{	641	{
458	aio_req req;	642	aio_req req;
		643
459	Newz (0, req, 1, aio_cb);	644	Newz (0, req, 1, aio_cb);
		645
460	req->type = REQ_QUIT;	646	req->type = REQ_QUIT;
		647	req->pri = PRI_MAX + PRI_BIAS;
461		648
462	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);
463	}	664	}
464		665
465	static void min_parallel (int nthreads)	666	static void min_parallel (int nthreads)
466	{	667	{
467	if (wanted < nthreads)	668	if (wanted < nthreads)
468	wanted = nthreads;	669	wanted = nthreads;
469	}	670	}
470		671
471	static void max_parallel (int nthreads)	672	static void max_parallel (int nthreads)
472	{	673	{
473	int cur = started;
474
475	if (wanted > nthreads)	674	if (wanted > nthreads)
476	wanted = nthreads;	675	wanted = nthreads;
477		676
478	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)
479	{	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
480	end_thread ();	695	maybe_start_thread ();
481	cur--;	696
		697	FD_ZERO(&rfd);
		698	FD_SET(respipe [0], &rfd);
		699
		700	select (respipe [0] + 1, &rfd, 0, 0, 0);
482	}	701	}
		702	}
483		703
484	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 (;;)
485	{	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
486	poll_wait ();	774	poll_wait ();
487	poll_cb ();	775
		776	++maxreqs;
488	}	777	}
		778
		779	return count;
489	}	780	}
490		781
491	static void create_pipe ()	782	static void create_pipe ()
492	{	783	{
493	if (pipe (respipe))	784	if (pipe (respipe))
…		…
517	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)
518	{	809	{
519	ssize_t res;	810	ssize_t res;
520	off_t ooffset;	811	off_t ooffset;
521		812
522	pthread_mutex_lock (&preadwritelock);	813	LOCK (preadwritelock);
523	ooffset = lseek (fd, 0, SEEK_CUR);	814	ooffset = lseek (fd, 0, SEEK_CUR);
524	lseek (fd, offset, SEEK_SET);	815	lseek (fd, offset, SEEK_SET);
525	res = read (fd, buf, count);	816	res = read (fd, buf, count);
526	lseek (fd, ooffset, SEEK_SET);	817	lseek (fd, ooffset, SEEK_SET);
527	pthread_mutex_unlock (&preadwritelock);	818	UNLOCK (preadwritelock);
528		819
529	return res;	820	return res;
530	}	821	}
531		822
532	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)
533	{	824	{
534	ssize_t res;	825	ssize_t res;
535	off_t ooffset;	826	off_t ooffset;
536		827
537	pthread_mutex_lock (&preadwritelock);	828	LOCK (preadwritelock);
538	ooffset = lseek (fd, 0, SEEK_CUR);	829	ooffset = lseek (fd, 0, SEEK_CUR);
539	lseek (fd, offset, SEEK_SET);	830	lseek (fd, offset, SEEK_SET);
540	res = write (fd, buf, count);	831	res = write (fd, buf, count);
541	lseek (fd, offset, SEEK_SET);	832	lseek (fd, offset, SEEK_SET);
542	pthread_mutex_unlock (&preadwritelock);	833	UNLOCK (preadwritelock);
543		834
544	return res;	835	return res;
545	}	836	}
546	#endif	837	#endif
547		838
548	#if !HAVE_FDATASYNC	839	#if !HAVE_FDATASYNC
549	# define fdatasync fsync	840	# define fdatasync fsync
550	#endif	841	#endif
551		842
552	#if !HAVE_READAHEAD	843	#if !HAVE_READAHEAD
553	# define readahead aio_readahead	844	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
554		845
555	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)
556	{	847	{
557	char readahead_buf[4096];	848	dBUF;
558		849
559	while (count > 0)	850	while (count > 0)
560	{	851	{
561	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);	852	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
562		853
563	pread (fd, readahead_buf, len, offset);	854	pread (fd, aio_buf, len, offset);
564	offset += len;	855	offset += len;
565	count -= len;	856	count -= len;
566	}	857	}
567		858
568	errno = 0;	859	errno = 0;
569	}	860	}
		861
570	#endif	862	#endif
571		863
572	#if !HAVE_READDIR_R	864	#if !HAVE_READDIR_R
573	# define readdir_r aio_readdir_r	865	# define readdir_r aio_readdir_r
574		866
…		…
577	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)
578	{	870	{
579	struct dirent *e;	871	struct dirent *e;
580	int errorno;	872	int errorno;
581		873
582	pthread_mutex_lock (&readdirlock);	874	LOCK (readdirlock);
583		875
584	e = readdir (dirp);	876	e = readdir (dirp);
585	errorno = errno;	877	errorno = errno;
586		878
587	if (e)	879	if (e)
…		…
590	strcpy (ent->d_name, e->d_name);	882	strcpy (ent->d_name, e->d_name);
591	}	883	}
592	else	884	else
593	*res = 0;	885	*res = 0;
594		886
595	pthread_mutex_unlock (&readdirlock);	887	UNLOCK (readdirlock);
596		888
597	errno = errorno;	889	errno = errorno;
598	return e ? 0 : -1;	890	return e ? 0 : -1;
599	}	891	}
600	#endif	892	#endif
601		893
602	/* sendfile always needs emulation */	894	/* sendfile always needs emulation */
603	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)
604	{	896	{
605	ssize_t res;	897	ssize_t res;
606		898
607	if (!count)	899	if (!count)
608	return 0;	900	return 0;
…		…
619	{	911	{
620	off_t sbytes;	912	off_t sbytes;
621	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);	913	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
622		914
623	if (res < 0 && sbytes)	915	if (res < 0 && sbytes)
624	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */	916	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
625	res = sbytes;	917	res = sbytes;
626	}	918	}
627		919
628	# elif __hpux	920	# elif __hpux
629	res = sendfile (ofd, ifd, offset, count, 0, 0);	921	res = sendfile (ofd, ifd, offset, count, 0, 0);
…		…
657	#endif	949	#endif
658	)	950	)
659	)	951	)
660	{	952	{
661	/* emulate sendfile. this is a major pain in the ass */	953	/* emulate sendfile. this is a major pain in the ass */
662	char buf[4096];	954	dBUF;
		955
663	res = 0;	956	res = 0;
664		957
665	while (count)	958	while (count)
666	{	959	{
667	ssize_t cnt;	960	ssize_t cnt;
668		961
669	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);	962	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
670		963
671	if (cnt <= 0)	964	if (cnt <= 0)
672	{	965	{
673	if (cnt && !res) res = -1;	966	if (cnt && !res) res = -1;
674	break;	967	break;
675	}	968	}
676		969
677	cnt = write (ofd, buf, cnt);	970	cnt = write (ofd, aio_buf, cnt);
678		971
679	if (cnt <= 0)	972	if (cnt <= 0)
680	{	973	{
681	if (cnt && !res) res = -1;	974	if (cnt && !res) res = -1;
682	break;	975	break;
…		…
690		983
691	return res;	984	return res;
692	}	985	}
693		986
694	/* read a full directory */	987	/* read a full directory */
695	static int scandir_ (const char *path, void **namesp)	988	static void scandir_ (aio_req req, worker *self)
696	{	989	{
697	DIR *dirp = opendir (path);	990	DIR *dirp;
698	union	991	union
699	{	992	{
700	struct dirent d;	993	struct dirent d;
701	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];	994	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
702	} u;	995	} *u;
703	struct dirent *entp;	996	struct dirent *entp;
704	char *name, *names;	997	char *name, *names;
705	int memlen = 4096;	998	int memlen = 4096;
706	int memofs = 0;	999	int memofs = 0;
707	int res = 0;	1000	int res = 0;
708	int errorno;	1001	int errorno;
709		1002
710	if (!dirp)	1003	LOCK (wrklock);
711	return -1;	1004	self->dirp = dirp = opendir (req->ptr1);
712		1005	self->dbuf = u = malloc (sizeof (*u));
		1006	req->flags |= FLAG_PTR2_FREE;
713	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);
714		1060
715	for (;;)	1061	for (;;)
716	{	1062	{
717	errno = 0, readdir_r (dirp, &u.d, &entp);	1063	ts.tv_sec = time (0) + IDLE_TIMEOUT;
718		1064
719	if (!entp)	1065	LOCK (reqlock);
720	break;
721
722	name = entp->d_name;
723
724	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
725	{
726	int len = strlen (name) + 1;
727
728	res++;
729
730	while (memofs + len > memlen)
731	{
732	memlen *= 2;
733	names = realloc (names, memlen);
734	if (!names)
735	break;
736	}
737
738	memcpy (names + memofs, name, len);
739	memofs += len;
740	}
741	}
742
743	errorno = errno;
744	closedir (dirp);
745
746	if (errorno)
747	{
748	free (names);
749	errno = errorno;
750	res = -1;
751	}
752
753	*namesp = (void *)names;
754	return res;
755	}
756
757	/*****************************************************************************/
758
759	static void *aio_proc (void *thr_arg)
760	{
761	aio_req req;
762	int type;
763
764	do
765	{
766	pthread_mutex_lock (&reqlock);
767		1066
768	for (;;)	1067	for (;;)
769	{	1068	{
770	req = reqs;	1069	self->req = req = reqq_shift (&req_queue);
771
772	if (reqs)
773	{
774	reqs = reqs->next;
775	if (!reqs) reqe = 0;
776	}
777		1070
778	if (req)	1071	if (req)
779	break;	1072	break;
780		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 */
781	pthread_cond_wait (&reqwait, &reqlock);	1090	pthread_cond_wait (&reqwait, &reqlock);
		1091	ts.tv_sec = time (0) + IDLE_TIMEOUT;
		1092	}
		1093
		1094	--idle;
782	}	1095	}
783		1096
784	pthread_mutex_unlock (&reqlock);	1097	--nready;
		1098
		1099	UNLOCK (reqlock);
785		1100
786	errno = 0; /* strictly unnecessary */	1101	errno = 0; /* strictly unnecessary */
787		1102
788	if (!req->cancelled)	1103	if (!(req->flags & FLAG_CANCELLED))
789	switch (type = req->type) /* remember type for QUIT check */	1104	switch (req->type)
790	{	1105	{
791	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;
792	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;
793		1108
794	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;
795	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;
796		1111
797	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;
798	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;
799	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;
800		1115
801	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;
802	case REQ_CLOSE: req->result = close (req->fd); break;	1117	case REQ_CLOSE: req->result = close (req->int1); break;
803	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	1118	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
804	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;	1119	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
805	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;	1120	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
806	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;	1121	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
807	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;
808		1125
809	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	1126	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
810	case REQ_FSYNC: req->result = fsync (req->fd); break;	1127	case REQ_FSYNC: req->result = fsync (req->int1); break;
811	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;	1128	case REQ_READDIR: scandir_ (req, self); break;
812		1129
813	case REQ_SLEEP:	1130	case REQ_BUSY:
814	{	1131	{
815	struct timeval tv;	1132	struct timeval tv;
816		1133
817	tv.tv_sec = req->fd;	1134	tv.tv_sec = req->int1;
818	tv.tv_usec = req->fd2;	1135	tv.tv_usec = req->int2;
819		1136
820	req->result = select (0, 0, 0, 0, &tv);	1137	req->result = select (0, 0, 0, 0, &tv);
821	}	1138	}
822		1139
		1140	case REQ_GROUP:
		1141	case REQ_NOP:
		1142	break;
		1143
823	case REQ_QUIT:	1144	case REQ_QUIT:
824	break;	1145	goto quit;
825		1146
826	default:	1147	default:
827	req->result = ENOSYS;	1148	req->result = ENOSYS;
828	break;	1149	break;
829	}	1150	}
830		1151
831	req->errorno = errno;	1152	req->errorno = errno;
832		1153
833	pthread_mutex_lock (&reslock);	1154	LOCK (reslock);
834		1155
835	req->next = 0;	1156	++npending;
836		1157
837	if (rese)	1158	if (!reqq_push (&res_queue, req))
838	{
839	rese->next = req;
840	rese = req;
841	}
842	else
843	{
844	rese = ress = req;
845
846	/* write a dummy byte to the pipe so fh becomes ready */	1159	/* write a dummy byte to the pipe so fh becomes ready */
847	write (respipe [1], &respipe, 1);	1160	write (respipe [1], &respipe, 1);
848	}
849		1161
850	pthread_mutex_unlock (&reslock);	1162	self->req = 0;
		1163	worker_clear (self);
		1164
		1165	UNLOCK (reslock);
851	}	1166	}
852	while (type != REQ_QUIT);	1167
		1168	quit:
		1169	LOCK (wrklock);
		1170	worker_free (self);
		1171	UNLOCK (wrklock);
853		1172
854	return 0;	1173	return 0;
855	}	1174	}
856		1175
857	/*****************************************************************************/	1176	/*****************************************************************************/
858		1177
859	static void atfork_prepare (void)	1178	static void atfork_prepare (void)
860	{	1179	{
861	pthread_mutex_lock (&reqlock);	1180	LOCK (wrklock);
862	pthread_mutex_lock (&reslock);	1181	LOCK (reqlock);
		1182	LOCK (reslock);
863	#if !HAVE_PREADWRITE	1183	#if !HAVE_PREADWRITE
864	pthread_mutex_lock (&preadwritelock);	1184	LOCK (preadwritelock);
865	#endif	1185	#endif
866	#if !HAVE_READDIR_R	1186	#if !HAVE_READDIR_R
867	pthread_mutex_lock (&readdirlock);	1187	LOCK (readdirlock);
868	#endif	1188	#endif
869	}	1189	}
870		1190
871	static void atfork_parent (void)	1191	static void atfork_parent (void)
872	{	1192	{
873	#if !HAVE_READDIR_R	1193	#if !HAVE_READDIR_R
874	pthread_mutex_unlock (&readdirlock);	1194	UNLOCK (readdirlock);
875	#endif	1195	#endif
876	#if !HAVE_PREADWRITE	1196	#if !HAVE_PREADWRITE
877	pthread_mutex_unlock (&preadwritelock);	1197	UNLOCK (preadwritelock);
878	#endif	1198	#endif
879	pthread_mutex_unlock (&reslock);	1199	UNLOCK (reslock);
880	pthread_mutex_unlock (&reqlock);	1200	UNLOCK (reqlock);
		1201	UNLOCK (wrklock);
881	}	1202	}
882		1203
883	static void atfork_child (void)	1204	static void atfork_child (void)
884	{	1205	{
885	aio_req prv;	1206	aio_req prv;
886		1207
887	started = 0;	1208	while (prv = reqq_shift (&req_queue))
		1209	req_free (prv);
888		1210
889	while (reqs)	1211	while (prv = reqq_shift (&res_queue))
		1212	req_free (prv);
		1213
		1214	while (wrk_first.next != &wrk_first)
890	{	1215	{
891	prv = reqs;	1216	worker *wrk = wrk_first.next;
892	reqs = prv->next;	1217
		1218	if (wrk->req)
		1219	req_free (wrk->req);
		1220
		1221	worker_clear (wrk);
893	req_free (prv);	1222	worker_free (wrk);
894	}	1223	}
895		1224
896	reqs = reqe = 0;	1225	started = 0;
897		1226	idle = 0;
898	while (ress)	1227	nreqs = 0;
899	{	1228	nready = 0;
900	prv = ress;	1229	npending = 0;
901	ress = prv->next;
902	req_free (prv);
903	}
904
905	ress = rese = 0;
906		1230
907	close (respipe [0]);	1231	close (respipe [0]);
908	close (respipe [1]);	1232	close (respipe [1]);
909	create_pipe ();	1233	create_pipe ();
910		1234
911	atfork_parent ();	1235	atfork_parent ();
912	}	1236	}
913		1237
914	#define dREQ \	1238	#define dREQ \
915	aio_req req; \	1239	aio_req req; \
		1240	int req_pri = next_pri; \
		1241	next_pri = DEFAULT_PRI + PRI_BIAS; \
916	\	1242	\
917	if (SvOK (callback) && !SvROK (callback)) \	1243	if (SvOK (callback) && !SvROK (callback)) \
918	croak ("callback must be undef or of reference type"); \	1244	croak ("callback must be undef or of reference type"); \
919	\	1245	\
920	Newz (0, req, 1, aio_cb); \	1246	Newz (0, req, 1, aio_cb); \
921	if (!req) \	1247	if (!req) \
922	croak ("out of memory during aio_req allocation"); \	1248	croak ("out of memory during aio_req allocation"); \
923	\	1249	\
924	req->callback = newSVsv (callback)	1250	req->callback = newSVsv (callback); \
		1251	req->pri = req_pri
925		1252
926	#define REQ_SEND \	1253	#define REQ_SEND \
927	req_send (req); \	1254	req_send (req); \
928	\	1255	\
929	if (GIMME_V != G_VOID) \	1256	if (GIMME_V != G_VOID) \
…		…
934	PROTOTYPES: ENABLE	1261	PROTOTYPES: ENABLE
935		1262
936	BOOT:	1263	BOOT:
937	{	1264	{
938	HV *stash = gv_stashpv ("IO::AIO", 1);	1265	HV *stash = gv_stashpv ("IO::AIO", 1);
		1266
939	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	1267	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
940	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	1268	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
941	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));
942		1273
943	create_pipe ();	1274	create_pipe ();
944	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	1275	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
945	}	1276	}
946		1277
947	void	1278	void
948	min_parallel (nthreads)	1279	max_poll_reqs (int nreqs)
949	int nthreads
950	PROTOTYPE: $	1280	PROTOTYPE: $
		1281	CODE:
		1282	max_poll_reqs = nreqs;
951		1283
952	void	1284	void
953	max_parallel (nthreads)	1285	max_poll_time (double nseconds)
954	int nthreads
955	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);
956		1303
957	int	1304	int
958	max_outstanding (nreqs)	1305	max_outstanding (int maxreqs)
959	int nreqs	1306	PROTOTYPE: $
960	PROTOTYPE: $
961	CODE:	1307	CODE:
962	RETVAL = max_outstanding;	1308	RETVAL = max_outstanding;
963	max_outstanding = nreqs;	1309	max_outstanding = maxreqs;
		1310	OUTPUT:
		1311	RETVAL
964		1312
965	void	1313	void
966	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	1314	aio_open (pathname,flags,mode,callback=&PL_sv_undef)
967	SV * pathname	1315	SV8 * pathname
968	int flags	1316	int flags
969	int mode	1317	int mode
970	SV * callback	1318	SV * callback
971	PROTOTYPE: $$$;$	1319	PROTOTYPE: $$$;$
972	PPCODE:	1320	PPCODE:
973	{	1321	{
974	dREQ;	1322	dREQ;
975		1323
976	req->type = REQ_OPEN;	1324	req->type = REQ_OPEN;
977	req->data = newSVsv (pathname);	1325	req->sv1 = newSVsv (pathname);
978	req->dataptr = SvPVbyte_nolen (req->data);	1326	req->ptr1 = SvPVbyte_nolen (req->sv1);
979	req->fd = flags;	1327	req->int1 = flags;
980	req->mode = mode;	1328	req->mode = mode;
981		1329
982	REQ_SEND;	1330	REQ_SEND;
983	}	1331	}
984		1332
…		…
994	PPCODE:	1342	PPCODE:
995	{	1343	{
996	dREQ;	1344	dREQ;
997		1345
998	req->type = ix;	1346	req->type = ix;
999	req->fh = newSVsv (fh);	1347	req->fh = newSVsv (fh);
1000	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1348	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1001		1349
1002	REQ_SEND (req);	1350	REQ_SEND (req);
1003	}	1351	}
1004		1352
1005	void	1353	void
1006	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1354	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
1007	SV * fh	1355	SV * fh
1008	UV offset	1356	UV offset
1009	UV length	1357	UV length
1010	SV * data	1358	SV8 * data
1011	UV dataoffset	1359	UV dataoffset
1012	SV * callback	1360	SV * callback
1013	ALIAS:	1361	ALIAS:
1014	aio_read = REQ_READ	1362	aio_read = REQ_READ
1015	aio_write = REQ_WRITE	1363	aio_write = REQ_WRITE
1016	PROTOTYPE: $$$$$;$	1364	PROTOTYPE: $$$$$;$
1017	PPCODE:	1365	PPCODE:
1018	{	1366	{
1019	aio_req req;
1020	STRLEN svlen;	1367	STRLEN svlen;
1021	char *svptr = SvPVbyte (data, svlen);	1368	char *svptr = SvPVbyte (data, svlen);
1022		1369
1023	SvUPGRADE (data, SVt_PV);	1370	SvUPGRADE (data, SVt_PV);
1024	SvPOK_on (data);	1371	SvPOK_on (data);
…		…
1046		1393
1047	{	1394	{
1048	dREQ;	1395	dREQ;
1049		1396
1050	req->type = ix;	1397	req->type = ix;
1051	req->fh = newSVsv (fh);	1398	req->fh = newSVsv (fh);
1052	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1399	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
1053	: IoOFP (sv_2io (fh)));	1400	: IoOFP (sv_2io (fh)));
1054	req->offset = offset;	1401	req->offs = offset;
1055	req->length = length;	1402	req->size = length;
1056	req->data = SvREFCNT_inc (data);	1403	req->sv1 = SvREFCNT_inc (data);
1057	req->dataptr = (char *)svptr + dataoffset;	1404	req->ptr1 = (char *)svptr + dataoffset;
		1405	req->stroffset = dataoffset;
1058		1406
1059	if (!SvREADONLY (data))	1407	if (!SvREADONLY (data))
1060	{	1408	{
1061	SvREADONLY_on (data);	1409	SvREADONLY_on (data);
1062	req->data2ptr = (void *)data;	1410	req->flags |= FLAG_SV1_RO_OFF;
1063	}	1411	}
1064		1412
1065	REQ_SEND;	1413	REQ_SEND;
1066	}	1414	}
		1415	}
		1416
		1417	void
		1418	aio_readlink (path,callback=&PL_sv_undef)
		1419	SV8 * path
		1420	SV * callback
		1421	PROTOTYPE: $$;$
		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;
1067	}	1437	}
1068		1438
1069	void	1439	void
1070	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)
1071	SV * out_fh	1441	SV * out_fh
…		…
1077	PPCODE:	1447	PPCODE:
1078	{	1448	{
1079	dREQ;	1449	dREQ;
1080		1450
1081	req->type = REQ_SENDFILE;	1451	req->type = REQ_SENDFILE;
1082	req->fh = newSVsv (out_fh);	1452	req->fh = newSVsv (out_fh);
1083	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1453	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1084	req->fh2 = newSVsv (in_fh);	1454	req->sv2 = newSVsv (in_fh);
1085	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1455	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1086	req->offset = in_offset;	1456	req->offs = in_offset;
1087	req->length = length;	1457	req->size = length;
1088		1458
1089	REQ_SEND;	1459	REQ_SEND;
1090	}	1460	}
1091		1461
1092	void	1462	void
…		…
1099	PPCODE:	1469	PPCODE:
1100	{	1470	{
1101	dREQ;	1471	dREQ;
1102		1472
1103	req->type = REQ_READAHEAD;	1473	req->type = REQ_READAHEAD;
1104	req->fh = newSVsv (fh);	1474	req->fh = newSVsv (fh);
1105	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1475	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1106	req->offset = offset;	1476	req->offs = offset;
1107	req->length = length;	1477	req->size = length;
1108		1478
1109	REQ_SEND;	1479	REQ_SEND;
1110	}	1480	}
1111		1481
1112	void	1482	void
1113	aio_stat (fh_or_path,callback=&PL_sv_undef)	1483	aio_stat (fh_or_path,callback=&PL_sv_undef)
1114	SV * fh_or_path	1484	SV8 * fh_or_path
1115	SV * callback	1485	SV * callback
1116	ALIAS:	1486	ALIAS:
1117	aio_stat = REQ_STAT	1487	aio_stat = REQ_STAT
1118	aio_lstat = REQ_LSTAT	1488	aio_lstat = REQ_LSTAT
1119	PPCODE:	1489	PPCODE:
1120	{	1490	{
1121	dREQ;	1491	dREQ;
1122		1492
1123	New (0, req->statdata, 1, Stat_t);	1493	req->ptr2 = malloc (sizeof (Stat_t));
1124	if (!req->statdata)	1494	if (!req->ptr2)
1125	{	1495	{
1126	req_free (req);	1496	req_free (req);
1127	croak ("out of memory during aio_req->statdata allocation");	1497	croak ("out of memory during aio_stat statdata allocation");
1128	}	1498	}
		1499
		1500	req->flags |= FLAG_PTR2_FREE;
1129		1501
1130	if (SvPOK (fh_or_path))	1502	if (SvPOK (fh_or_path))
1131	{	1503	{
1132	req->type = ix;	1504	req->type = ix;
1133	req->data = newSVsv (fh_or_path);	1505	req->sv1 = newSVsv (fh_or_path);
1134	req->dataptr = SvPVbyte_nolen (req->data);	1506	req->ptr1 = SvPVbyte_nolen (req->sv1);
1135	}	1507	}
1136	else	1508	else
1137	{	1509	{
1138	req->type = REQ_FSTAT;	1510	req->type = REQ_FSTAT;
1139	req->fh = newSVsv (fh_or_path);	1511	req->fh = newSVsv (fh_or_path);
1140	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1512	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1141	}	1513	}
1142		1514
1143	REQ_SEND;	1515	REQ_SEND;
1144	}	1516	}
1145		1517
1146	void	1518	void
1147	aio_unlink (pathname,callback=&PL_sv_undef)	1519	aio_unlink (pathname,callback=&PL_sv_undef)
1148	SV * pathname	1520	SV8 * pathname
1149	SV * callback	1521	SV * callback
1150	ALIAS:	1522	ALIAS:
1151	aio_unlink = REQ_UNLINK	1523	aio_unlink = REQ_UNLINK
1152	aio_rmdir = REQ_RMDIR	1524	aio_rmdir = REQ_RMDIR
1153	aio_readdir = REQ_READDIR	1525	aio_readdir = REQ_READDIR
1154	PPCODE:	1526	PPCODE:
1155	{	1527	{
1156	dREQ;	1528	dREQ;
1157		1529
1158	req->type = ix;	1530	req->type = ix;
1159	req->data = newSVsv (pathname);	1531	req->sv1 = newSVsv (pathname);
1160	req->dataptr = SvPVbyte_nolen (req->data);	1532	req->ptr1 = SvPVbyte_nolen (req->sv1);
1161		1533
1162	REQ_SEND;	1534	REQ_SEND;
1163	}	1535	}
1164		1536
1165	void	1537	void
1166	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1538	aio_link (oldpath,newpath,callback=&PL_sv_undef)
1167	SV * oldpath	1539	SV8 * oldpath
1168	SV * newpath	1540	SV8 * newpath
1169	SV * callback	1541	SV * callback
1170	ALIAS:	1542	ALIAS:
1171	aio_link = REQ_LINK	1543	aio_link = REQ_LINK
1172	aio_symlink = REQ_SYMLINK	1544	aio_symlink = REQ_SYMLINK
1173	aio_rename = REQ_RENAME	1545	aio_rename = REQ_RENAME
1174	PPCODE:	1546	PPCODE:
1175	{	1547	{
1176	dREQ;	1548	dREQ;
1177		1549
1178	req->type = ix;	1550	req->type = ix;
1179	req->fh = newSVsv (oldpath);	1551	req->fh = newSVsv (oldpath);
1180	req->data2ptr = SvPVbyte_nolen (req->fh);	1552	req->ptr2 = SvPVbyte_nolen (req->fh);
1181	req->data = newSVsv (newpath);	1553	req->sv1 = newSVsv (newpath);
1182	req->dataptr = SvPVbyte_nolen (req->data);	1554	req->ptr1 = SvPVbyte_nolen (req->sv1);
1183		1555
1184	REQ_SEND;	1556	REQ_SEND;
1185	}	1557	}
1186		1558
1187	void	1559	void
1188	aio_sleep (delay,callback=&PL_sv_undef)	1560	aio_mknod (pathname,mode,dev,callback=&PL_sv_undef)
1189	double delay	1561	SV8 * pathname
1190	SV * callback	1562	SV * callback
		1563	UV mode
		1564	UV dev
1191	PPCODE:	1565	PPCODE:
1192	{	1566	{
1193	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	}
1194		1577
		1578	void
		1579	aio_busy (delay,callback=&PL_sv_undef)
		1580	double delay
		1581	SV * callback
		1582	PPCODE:
		1583	{
		1584	dREQ;
		1585
1195	req->type = REQ_SLEEP;	1586	req->type = REQ_BUSY;
1196	req->fd = delay < 0. ? 0 : delay;	1587	req->int1 = delay < 0. ? 0 : delay;
1197	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1588	req->int2 = delay < 0. ? 0 : 1000. * (delay - req->int1);
1198		1589
1199	REQ_SEND;	1590	REQ_SEND;
1200	}	1591	}
1201		1592
1202	void	1593	void
…		…
1204	SV * callback	1595	SV * callback
1205	PROTOTYPE: ;$	1596	PROTOTYPE: ;$
1206	PPCODE:	1597	PPCODE:
1207	{	1598	{
1208	dREQ;	1599	dREQ;
		1600
1209	req->type = REQ_GROUP;	1601	req->type = REQ_GROUP;
		1602
1210	req_send (req);	1603	req_send (req);
1211	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1604	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1212	}	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;
1213		1640
1214	void	1641	void
1215	flush ()	1642	flush ()
1216	PROTOTYPE:	1643	PROTOTYPE:
1217	CODE:	1644	CODE:
…		…
1219	{	1646	{
1220	poll_wait ();	1647	poll_wait ();
1221	poll_cb ();	1648	poll_cb ();
1222	}	1649	}
1223		1650
1224	void	1651	int
1225	poll()	1652	poll()
1226	PROTOTYPE:	1653	PROTOTYPE:
1227	CODE:	1654	CODE:
1228	if (nreqs)
1229	{
1230	poll_wait ();	1655	poll_wait ();
1231	poll_cb ();	1656	RETVAL = poll_cb ();
1232	}	1657	OUTPUT:
		1658	RETVAL
1233		1659
1234	int	1660	int
1235	poll_fileno()	1661	poll_fileno()
1236	PROTOTYPE:	1662	PROTOTYPE:
1237	CODE:	1663	CODE:
…		…
1249		1675
1250	void	1676	void
1251	poll_wait()	1677	poll_wait()
1252	PROTOTYPE:	1678	PROTOTYPE:
1253	CODE:	1679	CODE:
1254	if (nreqs)
1255	poll_wait ();	1680	poll_wait ();
1256		1681
1257	int	1682	int
1258	nreqs()	1683	nreqs()
1259	PROTOTYPE:	1684	PROTOTYPE:
1260	CODE:	1685	CODE:
1261	RETVAL = nreqs;	1686	RETVAL = nreqs;
1262	OUTPUT:	1687	OUTPUT:
1263	RETVAL	1688	RETVAL
1264		1689
1265	PROTOTYPES: DISABLE	1690	int
1266		1691	nready()
1267	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1268
1269	void
1270	cancel (aio_req_ornot req)
1271	PROTOTYPE:	1692	PROTOTYPE:
1272	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:
1273	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);
1274		1730
1275	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1731	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1276		1732
1277	void	1733	void
1278	add (aio_req grp, ...)	1734	add (aio_req grp, ...)
1279	PPCODE:	1735	PPCODE:
1280	{	1736	{
1281	int i;	1737	int i;
		1738	aio_req req;
1282		1739
1283	if (grp->fd == 2)	1740	if (grp->int1 == 2)
1284	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1741	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1285		1742
1286	for (i = 1; i < items; ++i )	1743	for (i = 1; i < items; ++i )
1287	{	1744	{
1288	if (GIMME_V != G_VOID)	1745	if (GIMME_V != G_VOID)
1289	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1746	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1290		1747
1291	aio_req req = SvAIO_REQ (ST (i));	1748	req = SvAIO_REQ (ST (i));
1292		1749
1293	if (req)	1750	if (req)
1294	{	1751	{
1295	++grp->length;	1752	++grp->size;
1296	req->grp = grp;	1753	req->grp = grp;
1297		1754
1298	req->grp_prev = 0;	1755	req->grp_prev = 0;
1299	req->grp_next = grp->grp_first;	1756	req->grp_next = grp->grp_first;
1300		1757
…		…
1305	}	1762	}
1306	}	1763	}
1307	}	1764	}
1308		1765
1309	void	1766	void
		1767	cancel_subs (aio_req_ornot req)
		1768	CODE:
		1769	req_cancel_subs (req);
		1770
		1771	void
1310	result (aio_req grp, ...)	1772	result (aio_req grp, ...)
1311	CODE:	1773	CODE:
1312	{	1774	{
1313	int i;	1775	int i;
		1776	AV *av;
		1777
		1778	grp->errorno = errno;
		1779
1314	AV *av = newAV ();	1780	av = newAV ();
1315		1781
1316	for (i = 1; i < items; ++i )	1782	for (i = 1; i < items; ++i )
1317	av_push (av, newSVsv (ST (i)));	1783	av_push (av, newSVsv (ST (i)));
1318		1784
1319	SvREFCNT_dec (grp->data);	1785	SvREFCNT_dec (grp->sv1);
1320	grp->data = (SV *)av;	1786	grp->sv1 = (SV *)av;
1321	}	1787	}
1322		1788
1323	void	1789	void
1324	lock (aio_req grp)	1790	errno (aio_req grp, int errorno = errno)
		1791	CODE:
		1792	grp->errorno = errorno;
		1793
		1794	void
		1795	limit (aio_req grp, int limit)
1325	CODE:	1796	CODE:
1326	++grp->length;	1797	grp->int2 = limit;
		1798	aio_grp_feed (grp);
1327		1799
1328	void	1800	void
1329	unlock (aio_req grp)	1801	feed (aio_req grp, SV *callback=&PL_sv_undef)
1330	CODE:	1802	CODE:
1331	aio_grp_dec (grp);	1803	{
		1804	SvREFCNT_dec (grp->sv2);
		1805	grp->sv2 = newSVsv (callback);
1332		1806
1333	void	1807	if (grp->int2 <= 0)
1334	feeder_limit (aio_req grp, int limit)	1808	grp->int2 = 2;
1335	CODE:	1809
1336	grp->fd2 = limit;
1337	aio_grp_feed (grp);	1810	aio_grp_feed (grp);
1338
1339	void
1340	set_feeder (aio_req grp, SV *callback=&PL_sv_undef)
1341	CODE:
1342	{
1343	SvREFCNT_dec (grp->fh2);
1344	grp->fh2 = newSVsv (callback);
1345
1346	if (grp->fd2 <= 0)
1347	grp->fd2 = 2;
1348
1349	aio_grp_feed (grp);
1350	}	1811	}
1351		1812

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