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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.63 by root, Mon Oct 23 23:48:31 2006 UTC vs.
Revision 1.89 by root, Tue Oct 31 00:11:52 2006 UTC

1	#if __linux	1	/* solaris */
		2	#define _POSIX_PTHREAD_SEMANTICS 1
		3
		4	#if __linux && !defined(_GNU_SOURCE)
2	# define _GNU_SOURCE	5	# define _GNU_SOURCE
3	#endif	6	#endif
4		7
		8	/* just in case */
5	#define _REENTRANT 1	9	#define _REENTRANT 1
6		10
7	#include <errno.h>	11	#include <errno.h>
8		12
9	#include "EXTERN.h"	13	#include "EXTERN.h"
…		…
39	# else	43	# else
40	# error sendfile support requested but not available	44	# error sendfile support requested but not available
41	# endif	45	# endif
42	#endif	46	#endif
43		47
		48	/* number of seconds after which idle threads exit */
		49	#define IDLE_TIMEOUT 10
		50
44	/* used for struct dirent, AIX doesn't provide it */	51	/* used for struct dirent, AIX doesn't provide it */
45	#ifndef NAME_MAX	52	#ifndef NAME_MAX
46	# define NAME_MAX 4096	53	# define NAME_MAX 4096
47	#endif	54	#endif
48		55
		56	#ifndef PTHREAD_STACK_MIN
		57	/* care for broken platforms, e.g. windows */
		58	# define PTHREAD_STACK_MIN 16384
		59	#endif
		60
49	#if __ia64	61	#if __ia64
50	# define STACKSIZE 65536	62	# define STACKSIZE 65536
		63	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
		64	# define STACKSIZE PTHREAD_STACK_MIN
51	#else	65	#else
52	# define STACKSIZE 8192	66	# define STACKSIZE 16384
53	#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;
54		91
55	enum {	92	enum {
56	REQ_QUIT,	93	REQ_QUIT,
57	REQ_OPEN, REQ_CLOSE,	94	REQ_OPEN, REQ_CLOSE,
58	REQ_READ, REQ_WRITE, REQ_READAHEAD,	95	REQ_READ, REQ_WRITE, REQ_READAHEAD,
59	REQ_SENDFILE,	96	REQ_SENDFILE,
60	REQ_STAT, REQ_LSTAT, REQ_FSTAT,	97	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
61	REQ_FSYNC, REQ_FDATASYNC,	98	REQ_FSYNC, REQ_FDATASYNC,
62	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,	99	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
63	REQ_READDIR,	100	REQ_MKNOD, REQ_READDIR,
64	REQ_LINK, REQ_SYMLINK,	101	REQ_LINK, REQ_SYMLINK, REQ_READLINK,
65	REQ_GROUP, REQ_NOP,	102	REQ_GROUP, REQ_NOP,
66	REQ_SLEEP,	103	REQ_BUSY,
67	};	104	};
68		105
69	#define AIO_REQ_KLASS "IO::AIO::REQ"	106	#define AIO_REQ_KLASS "IO::AIO::REQ"
70	#define AIO_GRP_KLASS "IO::AIO::GRP"	107	#define AIO_GRP_KLASS "IO::AIO::GRP"
71		108
72	typedef struct aio_cb	109	typedef struct aio_cb
73	{	110	{
74	struct aio_cb *volatile next;	111	struct aio_cb *volatile next;
75		112
76	SV *data, *callback;	113	SV *callback, *fh;
77	SV *fh, *fh2;	114	SV *sv1, *sv2;
78	void *dataptr, *data2ptr;	115	void *ptr1, *ptr2;
79	Stat_t *statdata;
80	off_t offset;	116	off_t offs;
81	size_t length;	117	size_t size;
82	ssize_t result;	118	ssize_t result;
83		119
84	STRLEN dataoffset;	120	STRLEN stroffset;
85	int type;	121	int type;
86	int fd, fd2;	122	int int1, int2;
87	int errorno;	123	int errorno;
88	mode_t mode; /* open */	124	mode_t mode; /* open */
89		125
90	unsigned char flags;	126	unsigned char flags;
91	unsigned char pri;	127	unsigned char pri;
…		…
93	SV *self; /* the perl counterpart of this request, if any */	129	SV *self; /* the perl counterpart of this request, if any */
94	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;	130	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
95	} aio_cb;	131	} aio_cb;
96		132
97	enum {	133	enum {
98	FLAG_CANCELLED = 0x01,	134	FLAG_CANCELLED = 0x01, /* request was cancelled */
		135	FLAG_SV1_RO_OFF = 0x40, /* data was set readonly */
		136	FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */
99	};	137	};
100		138
101	typedef aio_cb *aio_req;	139	typedef aio_cb *aio_req;
102	typedef aio_cb *aio_req_ornot;	140	typedef aio_cb *aio_req_ornot;
103		141
…		…
105	PRI_MIN = -4,	143	PRI_MIN = -4,
106	PRI_MAX = 4,	144	PRI_MAX = 4,
107		145
108	DEFAULT_PRI = 0,	146	DEFAULT_PRI = 0,
109	PRI_BIAS = -PRI_MIN,	147	PRI_BIAS = -PRI_MIN,
		148	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
110	};	149	};
111		150
		151	#define AIO_TICKS ((1000000 + 1023) >> 10)
		152
		153	static unsigned int max_poll_time = 0;
		154	static unsigned int max_poll_reqs = 0;
		155
		156	/* calculcate time difference in ~1/AIO_TICKS of a second */
		157	static int tvdiff (struct timeval *tv1, struct timeval *tv2)
		158	{
		159	return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS
		160	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
		161	}
		162
112	static int next_pri = DEFAULT_PRI + PRI_BIAS;	163	static int next_pri = DEFAULT_PRI + PRI_BIAS;
113		164
114	static int started, wanted;	165	static unsigned int started, idle, wanted;
115	static volatile int nreqs;
116	static int max_outstanding = 1<<30;
117	static int respipe [2];
118		166
119	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)	167	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
120	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP	168	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
121	#else	169	#else
122	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER	170	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
123	#endif	171	#endif
124		172
		173	#define LOCK(mutex) pthread_mutex_lock (&(mutex))
		174	#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
		175
		176	/* worker threads management */
		177	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
		178
		179	typedef struct worker {
		180	/* locked by wrklock */
		181	struct worker *prev, *next;
		182
		183	pthread_t tid;
		184
		185	/* locked by reslock, reqlock or wrklock */
		186	aio_req req; /* currently processed request */
		187	void *dbuf;
		188	DIR *dirp;
		189	} worker;
		190
		191	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
		192
		193	static void worker_clear (worker *wrk)
		194	{
		195	if (wrk->dirp)
		196	{
		197	closedir (wrk->dirp);
		198	wrk->dirp = 0;
		199	}
		200
		201	if (wrk->dbuf)
		202	{
		203	free (wrk->dbuf);
		204	wrk->dbuf = 0;
		205	}
		206	}
		207
		208	static void worker_free (worker *wrk)
		209	{
		210	wrk->next->prev = wrk->prev;
		211	wrk->prev->next = wrk->next;
		212
		213	free (wrk);
		214	}
		215
		216	static volatile unsigned int nreqs, nready, npending;
		217	static volatile unsigned int max_idle = 4;
		218	static volatile unsigned int max_outstanding = 0xffffffff;
		219	static int respipe [2];
		220
125	static pthread_mutex_t reslock = AIO_MUTEX_INIT;	221	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
126	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;	222	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
127	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	223	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
128		224
129	static volatile aio_req reqs, reqe; /* queue start, queue end */	225	#if WORDACCESS_UNSAFE
130	static volatile aio_req ress, rese; /* queue start, queue end */
131		226
		227	static unsigned int get_nready ()
		228	{
		229	unsigned int retval;
		230
		231	LOCK (reqlock);
		232	retval = nready;
		233	UNLOCK (reqlock);
		234
		235	return retval;
		236	}
		237
		238	static unsigned int get_npending ()
		239	{
		240	unsigned int retval;
		241
		242	LOCK (reslock);
		243	retval = npending;
		244	UNLOCK (reslock);
		245
		246	return retval;
		247	}
		248
		249	static unsigned int get_nthreads ()
		250	{
		251	unsigned int retval;
		252
		253	LOCK (wrklock);
		254	retval = started;
		255	UNLOCK (wrklock);
		256
		257	return retval;
		258	}
		259
		260	#else
		261
		262	# define get_nready() nready
		263	# define get_npending() npending
		264	# define get_nthreads() started
		265
		266	#endif
		267
		268	/*
		269	* a somewhat faster data structure might be nice, but
		270	* with 8 priorities this actually needs <20 insns
		271	* per shift, the most expensive operation.
		272	*/
		273	typedef struct {
		274	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
		275	int size;
		276	} reqq;
		277
		278	static reqq req_queue;
		279	static reqq res_queue;
		280
		281	int reqq_push (reqq *q, aio_req req)
		282	{
		283	int pri = req->pri;
		284	req->next = 0;
		285
		286	if (q->qe[pri])
		287	{
		288	q->qe[pri]->next = req;
		289	q->qe[pri] = req;
		290	}
		291	else
		292	q->qe[pri] = q->qs[pri] = req;
		293
		294	return q->size++;
		295	}
		296
		297	aio_req reqq_shift (reqq *q)
		298	{
		299	int pri;
		300
		301	if (!q->size)
		302	return 0;
		303
		304	--q->size;
		305
		306	for (pri = NUM_PRI; pri--; )
		307	{
		308	aio_req req = q->qs[pri];
		309
		310	if (req)
		311	{
		312	if (!(q->qs[pri] = req->next))
		313	q->qe[pri] = 0;
		314
		315	return req;
		316	}
		317	}
		318
		319	abort ();
		320	}
		321
		322	static int poll_cb ();
132	static void req_invoke (aio_req req);	323	static void req_invoke (aio_req req);
133	static void req_free (aio_req req);	324	static void req_free (aio_req req);
		325	static void req_cancel (aio_req req);
134		326
135	/* must be called at most once */	327	/* must be called at most once */
136	static SV *req_sv (aio_req req, const char *klass)	328	static SV *req_sv (aio_req req, const char *klass)
137	{	329	{
138	if (!req->self)	330	if (!req->self)
…		…
156	return mg ? (aio_req)mg->mg_ptr : 0;	348	return mg ? (aio_req)mg->mg_ptr : 0;
157	}	349	}
158		350
159	static void aio_grp_feed (aio_req grp)	351	static void aio_grp_feed (aio_req grp)
160	{	352	{
161	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	353	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
162	{	354	{
163	int old_len = grp->length;	355	int old_len = grp->size;
164		356
165	if (grp->fh2 && SvOK (grp->fh2))	357	if (grp->sv2 && SvOK (grp->sv2))
166	{	358	{
167	dSP;	359	dSP;
168		360
169	ENTER;	361	ENTER;
170	SAVETMPS;	362	SAVETMPS;
171	PUSHMARK (SP);	363	PUSHMARK (SP);
172	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	364	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
173	PUTBACK;	365	PUTBACK;
174	call_sv (grp->fh2, G_VOID | G_EVAL);	366	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
175	SPAGAIN;	367	SPAGAIN;
176	FREETMPS;	368	FREETMPS;
177	LEAVE;	369	LEAVE;
178	}	370	}
179		371
180	/* stop if no progress has been made */	372	/* stop if no progress has been made */
181	if (old_len == grp->length)	373	if (old_len == grp->size)
182	{	374	{
183	SvREFCNT_dec (grp->fh2);	375	SvREFCNT_dec (grp->sv2);
184	grp->fh2 = 0;	376	grp->sv2 = 0;
185	break;	377	break;
186	}	378	}
187	}	379	}
188	}	380	}
189		381
190	static void aio_grp_dec (aio_req grp)	382	static void aio_grp_dec (aio_req grp)
191	{	383	{
192	--grp->length;	384	--grp->size;
193		385
194	/* call feeder, if applicable */	386	/* call feeder, if applicable */
195	aio_grp_feed (grp);	387	aio_grp_feed (grp);
196		388
197	/* finish, if done */	389	/* finish, if done */
198	if (!grp->length && grp->fd)	390	if (!grp->size && grp->int1)
199	{	391	{
200	req_invoke (grp);	392	req_invoke (grp);
201	req_free (grp);	393	req_free (grp);
202	}	394	}
203	}	395	}
204		396
205	static void poll_wait ()	397	static void req_invoke (aio_req req)
206	{	398	{
207	fd_set rfd;	399	dSP;
208		400
209	while (nreqs)	401	if (req->flags & FLAG_SV1_RO_OFF)
		402	SvREADONLY_off (req->sv1);
		403
		404	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
210	{	405	{
211	aio_req req;	406	ENTER;
212	pthread_mutex_lock (&reslock);	407	SAVETMPS;
213	req = ress;	408	PUSHMARK (SP);
214	pthread_mutex_unlock (&reslock);	409	EXTEND (SP, 1);
215		410
216	if (req)	411	switch (req->type)
217	return;	412	{
		413	case REQ_READDIR:
		414	{
		415	SV *rv = &PL_sv_undef;
218		416
219	FD_ZERO(&rfd);	417	if (req->result >= 0)
220	FD_SET(respipe [0], &rfd);	418	{
		419	int i;
		420	char *buf = req->ptr2;
		421	AV *av = newAV ();
221		422
222	select (respipe [0] + 1, &rfd, 0, 0, 0);	423	av_extend (av, req->result - 1);
		424
		425	for (i = 0; i < req->result; ++i)
		426	{
		427	SV *sv = newSVpv (buf, 0);
		428
		429	av_store (av, i, sv);
		430	buf += SvCUR (sv) + 1;
		431	}
		432
		433	rv = sv_2mortal (newRV_noinc ((SV *)av));
		434	}
		435
		436	PUSHs (rv);
		437	}
		438	break;
		439
		440	case REQ_OPEN:
		441	{
		442	/* convert fd to fh */
		443	SV *fh;
		444
		445	PUSHs (sv_2mortal (newSViv (req->result)));
		446	PUTBACK;
		447	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
		448	SPAGAIN;
		449
		450	fh = SvREFCNT_inc (POPs);
		451
		452	PUSHMARK (SP);
		453	XPUSHs (sv_2mortal (fh));
		454	}
		455	break;
		456
		457	case REQ_GROUP:
		458	req->int1 = 2; /* mark group as finished */
		459
		460	if (req->sv1)
		461	{
		462	int i;
		463	AV *av = (AV *)req->sv1;
		464
		465	EXTEND (SP, AvFILL (av) + 1);
		466	for (i = 0; i <= AvFILL (av); ++i)
		467	PUSHs (*av_fetch (av, i, 0));
		468	}
		469	break;
		470
		471	case REQ_NOP:
		472	case REQ_BUSY:
		473	break;
		474
		475	case REQ_READLINK:
		476	if (req->result > 0)
		477	{
		478	SvCUR_set (req->sv1, req->result);
		479	*SvEND (req->sv1) = 0;
		480	PUSHs (req->sv1);
		481	}
		482	break;
		483
		484	case REQ_STAT:
		485	case REQ_LSTAT:
		486	case REQ_FSTAT:
		487	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
		488	PL_laststatval = req->result;
		489	PL_statcache = *(Stat_t *)(req->ptr2);
		490	PUSHs (sv_2mortal (newSViv (req->result)));
		491	break;
		492
		493	case REQ_READ:
		494	SvCUR_set (req->sv1, req->stroffset + (req->result > 0 ? req->result : 0));
		495	*SvEND (req->sv1) = 0;
		496	PUSHs (sv_2mortal (newSViv (req->result)));
		497	break;
		498
		499	default:
		500	PUSHs (sv_2mortal (newSViv (req->result)));
		501	break;
		502	}
		503
		504	errno = req->errorno;
		505
		506	PUTBACK;
		507	call_sv (req->callback, G_VOID | G_EVAL);
		508	SPAGAIN;
		509
		510	FREETMPS;
		511	LEAVE;
223	}	512	}
224	}
225		513
226	static void req_invoke (aio_req req)	514	if (req->grp)
227	{
228	dSP;
229	int errorno = errno;
230
231	if (req->flags & FLAG_CANCELLED || !SvOK (req->callback))
232	return;
233
234	errno = req->errorno;
235
236	ENTER;
237	SAVETMPS;
238	PUSHMARK (SP);
239	EXTEND (SP, 1);
240
241	switch (req->type)
242	{	515	{
243	case REQ_READDIR:	516	aio_req grp = req->grp;
244	{
245	SV *rv = &PL_sv_undef;
246		517
247	if (req->result >= 0)	518	/* unlink request */
248	{	519	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
249	char *buf = req->data2ptr;	520	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
250	AV *av = newAV ();
251		521
252	while (req->result)	522	if (grp->grp_first == req)
253	{	523	grp->grp_first = req->grp_next;
254	SV *sv = newSVpv (buf, 0);
255		524
256	av_push (av, sv);	525	aio_grp_dec (grp);
257	buf += SvCUR (sv) + 1;
258	req->result--;
259	}
260
261	rv = sv_2mortal (newRV_noinc ((SV *)av));
262	}
263
264	PUSHs (rv);
265	}
266	break;
267
268	case REQ_OPEN:
269	{
270	/* convert fd to fh */
271	SV *fh;
272
273	PUSHs (sv_2mortal (newSViv (req->result)));
274	PUTBACK;
275	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
276	SPAGAIN;
277
278	fh = SvREFCNT_inc (POPs);
279
280	PUSHMARK (SP);
281	XPUSHs (sv_2mortal (fh));
282	}
283	break;
284
285	case REQ_GROUP:
286	req->fd = 2; /* mark group as finished */
287
288	if (req->data)
289	{
290	int i;
291	AV *av = (AV *)req->data;
292
293	EXTEND (SP, AvFILL (av) + 1);
294	for (i = 0; i <= AvFILL (av); ++i)
295	PUSHs (*av_fetch (av, i, 0));
296	}
297	break;
298
299	case REQ_NOP:
300	case REQ_SLEEP:
301	break;
302
303	default:
304	PUSHs (sv_2mortal (newSViv (req->result)));
305	break;
306	}	526	}
307
308
309	PUTBACK;
310	call_sv (req->callback, G_VOID | G_EVAL);
311	SPAGAIN;
312
313	FREETMPS;
314	LEAVE;
315
316	errno = errorno;
317		527
318	if (SvTRUE (ERRSV))	528	if (SvTRUE (ERRSV))
319	{	529	{
320	req_free (req);	530	req_free (req);
321	croak (0);	531	croak (0);
322	}	532	}
323	}	533	}
324		534
325	static void req_free (aio_req req)	535	static void req_free (aio_req req)
326	{	536	{
327	if (req->grp)
328	{
329	aio_req grp = req->grp;
330
331	/* unlink request */
332	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
333	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
334
335	if (grp->grp_first == req)
336	grp->grp_first = req->grp_next;
337
338	aio_grp_dec (grp);
339	}
340
341	if (req->self)	537	if (req->self)
342	{	538	{
343	sv_unmagic (req->self, PERL_MAGIC_ext);	539	sv_unmagic (req->self, PERL_MAGIC_ext);
344	SvREFCNT_dec (req->self);	540	SvREFCNT_dec (req->self);
345	}	541	}
346		542
347	SvREFCNT_dec (req->data);
348	SvREFCNT_dec (req->fh);	543	SvREFCNT_dec (req->fh);
		544	SvREFCNT_dec (req->sv1);
349	SvREFCNT_dec (req->fh2);	545	SvREFCNT_dec (req->sv2);
350	SvREFCNT_dec (req->callback);	546	SvREFCNT_dec (req->callback);
351	Safefree (req->statdata);
352		547
353	if (req->type == REQ_READDIR && req->result >= 0)	548	if (req->flags & FLAG_PTR2_FREE)
354	free (req->data2ptr);	549	free (req->ptr2);
355		550
356	Safefree (req);	551	Safefree (req);
357	}	552	}
358		553
		554	static void req_cancel_subs (aio_req grp)
		555	{
		556	aio_req sub;
		557
		558	if (grp->type != REQ_GROUP)
		559	return;
		560
		561	SvREFCNT_dec (grp->sv2);
		562	grp->sv2 = 0;
		563
		564	for (sub = grp->grp_first; sub; sub = sub->grp_next)
		565	req_cancel (sub);
		566	}
		567
359	static void req_cancel (aio_req req)	568	static void req_cancel (aio_req req)
360	{	569	{
361	req->flags |= FLAG_CANCELLED;	570	req->flags |= FLAG_CANCELLED;
362		571
363	if (req->type == REQ_GROUP)	572	req_cancel_subs (req);
364	{
365	aio_req sub;
366
367	for (sub = req->grp_first; sub; sub = sub->grp_next)
368	req_cancel (sub);
369	}
370	}
371
372	static int poll_cb ()
373	{
374	dSP;
375	int count = 0;
376	int do_croak = 0;
377	aio_req req;
378
379	for (;;)
380	{
381	pthread_mutex_lock (&reslock);
382	req = ress;
383
384	if (req)
385	{
386	ress = req->next;
387
388	if (!ress)
389	{
390	/* read any signals sent by the worker threads */
391	char buf [32];
392	while (read (respipe [0], buf, 32) == 32)
393	;
394
395	rese = 0;
396	}
397	}
398
399	pthread_mutex_unlock (&reslock);
400
401	if (!req)
402	break;
403
404	--nreqs;
405
406	if (req->type == REQ_QUIT)
407	started--;
408	else if (req->type == REQ_GROUP && req->length)
409	{
410	req->fd = 1; /* mark request as delayed */
411	continue;
412	}
413	else
414	{
415	if (req->type == REQ_READ)
416	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
417
418	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
419	SvREADONLY_off (req->data);
420
421	if (req->statdata)
422	{
423	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
424	PL_laststatval = req->result;
425	PL_statcache = *(req->statdata);
426	}
427
428	req_invoke (req);
429
430	count++;
431	}
432
433	req_free (req);
434	}
435
436	return count;
437	}	573	}
438		574
439	static void *aio_proc(void *arg);	575	static void *aio_proc(void *arg);
440		576
441	static void start_thread (void)	577	static void start_thread (void)
442	{	578	{
443	sigset_t fullsigset, oldsigset;	579	sigset_t fullsigset, oldsigset;
444	pthread_t tid;
445	pthread_attr_t attr;	580	pthread_attr_t attr;
		581
		582	worker *wrk = calloc (1, sizeof (worker));
		583
		584	if (!wrk)
		585	croak ("unable to allocate worker thread data");
446		586
447	pthread_attr_init (&attr);	587	pthread_attr_init (&attr);
448	pthread_attr_setstacksize (&attr, STACKSIZE);	588	pthread_attr_setstacksize (&attr, STACKSIZE);
449	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);	589	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
		590	#ifdef PTHREAD_SCOPE_PROCESS
		591	pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS);
		592	#endif
450		593
451	sigfillset (&fullsigset);	594	sigfillset (&fullsigset);
		595
		596	LOCK (wrklock);
452	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);	597	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
453		598
454	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)	599	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
455	started++;
456
457	sigprocmask (SIG_SETMASK, &oldsigset, 0);
458	}
459
460	static void req_send (aio_req req)
461	{
462	while (started < wanted && nreqs >= started)
463	start_thread ();
464
465	++nreqs;
466
467	pthread_mutex_lock (&reqlock);
468
469	req->next = 0;
470
471	if (reqe)
472	{	600	{
473	reqe->next = req;	601	wrk->prev = &wrk_first;
474	reqe = req;	602	wrk->next = wrk_first.next;
		603	wrk_first.next->prev = wrk;
		604	wrk_first.next = wrk;
		605	++started;
475	}	606	}
476	else	607	else
477	reqe = reqs = req;	608	free (wrk);
478		609
		610	sigprocmask (SIG_SETMASK, &oldsigset, 0);
		611	UNLOCK (wrklock);
		612	}
		613
		614	static void maybe_start_thread ()
		615	{
		616	if (get_nthreads () >= wanted)
		617	return;
		618
		619	/* todo: maybe use idle here, but might be less exact */
		620	if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
		621	return;
		622
		623	start_thread ();
		624	}
		625
		626	static void req_send (aio_req req)
		627	{
		628	++nreqs;
		629
		630	LOCK (reqlock);
		631	++nready;
		632	reqq_push (&req_queue, req);
479	pthread_cond_signal (&reqwait);	633	pthread_cond_signal (&reqwait);
480	pthread_mutex_unlock (&reqlock);	634	UNLOCK (reqlock);
481		635
482	if (nreqs > max_outstanding)	636	maybe_start_thread ();
483	for (;;)
484	{
485	poll_cb ();
486
487	if (nreqs <= max_outstanding)
488	break;
489
490	poll_wait ();
491	}
492	}	637	}
493		638
494	static void end_thread (void)	639	static void end_thread (void)
495	{	640	{
496	aio_req req;	641	aio_req req;
		642
497	Newz (0, req, 1, aio_cb);	643	Newz (0, req, 1, aio_cb);
		644
498	req->type = REQ_QUIT;	645	req->type = REQ_QUIT;
		646	req->pri = PRI_MAX + PRI_BIAS;
499		647
500	req_send (req);	648	LOCK (reqlock);
		649	reqq_push (&req_queue, req);
		650	pthread_cond_signal (&reqwait);
		651	UNLOCK (reqlock);
		652
		653	LOCK (wrklock);
		654	--started;
		655	UNLOCK (wrklock);
		656	}
		657
		658	static void set_max_idle (int nthreads)
		659	{
		660	if (WORDACCESS_UNSAFE) LOCK (reqlock);
		661	max_idle = nthreads <= 0 ? 1 : nthreads;
		662	if (WORDACCESS_UNSAFE) UNLOCK (reqlock);
501	}	663	}
502		664
503	static void min_parallel (int nthreads)	665	static void min_parallel (int nthreads)
504	{	666	{
505	if (wanted < nthreads)	667	if (wanted < nthreads)
506	wanted = nthreads;	668	wanted = nthreads;
507	}	669	}
508		670
509	static void max_parallel (int nthreads)	671	static void max_parallel (int nthreads)
510	{	672	{
511	int cur = started;
512
513	if (wanted > nthreads)	673	if (wanted > nthreads)
514	wanted = nthreads;	674	wanted = nthreads;
515		675
516	while (cur > wanted)	676	while (started > wanted)
		677	end_thread ();
		678	}
		679
		680	static void poll_wait ()
		681	{
		682	fd_set rfd;
		683
		684	while (nreqs)
517	{	685	{
		686	int size;
		687	if (WORDACCESS_UNSAFE) LOCK (reslock);
		688	size = res_queue.size;
		689	if (WORDACCESS_UNSAFE) UNLOCK (reslock);
		690
		691	if (size)
		692	return;
		693
518	end_thread ();	694	maybe_start_thread ();
519	cur--;	695
		696	FD_ZERO(&rfd);
		697	FD_SET(respipe [0], &rfd);
		698
		699	select (respipe [0] + 1, &rfd, 0, 0, 0);
520	}	700	}
		701	}
521		702
522	while (started > wanted)	703	static int poll_cb ()
		704	{
		705	dSP;
		706	int count = 0;
		707	int maxreqs = max_poll_reqs;
		708	int do_croak = 0;
		709	struct timeval tv_start, tv_now;
		710	aio_req req;
		711
		712	if (max_poll_time)
		713	gettimeofday (&tv_start, 0);
		714
		715	for (;;)
523	{	716	{
		717	for (;;)
		718	{
		719	maybe_start_thread ();
		720
		721	LOCK (reslock);
		722	req = reqq_shift (&res_queue);
		723
		724	if (req)
		725	{
		726	--npending;
		727
		728	if (!res_queue.size)
		729	{
		730	/* read any signals sent by the worker threads */
		731	char buf [32];
		732	while (read (respipe [0], buf, 32) == 32)
		733	;
		734	}
		735	}
		736
		737	UNLOCK (reslock);
		738
		739	if (!req)
		740	break;
		741
		742	--nreqs;
		743
		744	if (req->type == REQ_GROUP && req->size)
		745	{
		746	req->int1 = 1; /* mark request as delayed */
		747	continue;
		748	}
		749	else
		750	{
		751	req_invoke (req);
		752
		753	count++;
		754	}
		755
		756	req_free (req);
		757
		758	if (maxreqs && !--maxreqs)
		759	break;
		760
		761	if (max_poll_time)
		762	{
		763	gettimeofday (&tv_now, 0);
		764
		765	if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
		766	break;
		767	}
		768	}
		769
		770	if (nreqs <= max_outstanding)
		771	break;
		772
524	poll_wait ();	773	poll_wait ();
525	poll_cb ();	774
		775	++maxreqs;
526	}	776	}
		777
		778	return count;
527	}	779	}
528		780
529	static void create_pipe ()	781	static void create_pipe ()
530	{	782	{
531	if (pipe (respipe))	783	if (pipe (respipe))
…		…
555	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)	807	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
556	{	808	{
557	ssize_t res;	809	ssize_t res;
558	off_t ooffset;	810	off_t ooffset;
559		811
560	pthread_mutex_lock (&preadwritelock);	812	LOCK (preadwritelock);
561	ooffset = lseek (fd, 0, SEEK_CUR);	813	ooffset = lseek (fd, 0, SEEK_CUR);
562	lseek (fd, offset, SEEK_SET);	814	lseek (fd, offset, SEEK_SET);
563	res = read (fd, buf, count);	815	res = read (fd, buf, count);
564	lseek (fd, ooffset, SEEK_SET);	816	lseek (fd, ooffset, SEEK_SET);
565	pthread_mutex_unlock (&preadwritelock);	817	UNLOCK (preadwritelock);
566		818
567	return res;	819	return res;
568	}	820	}
569		821
570	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)	822	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
571	{	823	{
572	ssize_t res;	824	ssize_t res;
573	off_t ooffset;	825	off_t ooffset;
574		826
575	pthread_mutex_lock (&preadwritelock);	827	LOCK (preadwritelock);
576	ooffset = lseek (fd, 0, SEEK_CUR);	828	ooffset = lseek (fd, 0, SEEK_CUR);
577	lseek (fd, offset, SEEK_SET);	829	lseek (fd, offset, SEEK_SET);
578	res = write (fd, buf, count);	830	res = write (fd, buf, count);
579	lseek (fd, offset, SEEK_SET);	831	lseek (fd, offset, SEEK_SET);
580	pthread_mutex_unlock (&preadwritelock);	832	UNLOCK (preadwritelock);
581		833
582	return res;	834	return res;
583	}	835	}
584	#endif	836	#endif
585		837
586	#if !HAVE_FDATASYNC	838	#if !HAVE_FDATASYNC
587	# define fdatasync fsync	839	# define fdatasync fsync
588	#endif	840	#endif
589		841
590	#if !HAVE_READAHEAD	842	#if !HAVE_READAHEAD
591	# define readahead aio_readahead	843	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
592		844
593	static ssize_t readahead (int fd, off_t offset, size_t count)	845	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
594	{	846	{
595	char readahead_buf[4096];	847	dBUF;
596		848
597	while (count > 0)	849	while (count > 0)
598	{	850	{
599	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);	851	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
600		852
601	pread (fd, readahead_buf, len, offset);	853	pread (fd, aio_buf, len, offset);
602	offset += len;	854	offset += len;
603	count -= len;	855	count -= len;
604	}	856	}
605		857
606	errno = 0;	858	errno = 0;
607	}	859	}
		860
608	#endif	861	#endif
609		862
610	#if !HAVE_READDIR_R	863	#if !HAVE_READDIR_R
611	# define readdir_r aio_readdir_r	864	# define readdir_r aio_readdir_r
612		865
…		…
615	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)	868	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
616	{	869	{
617	struct dirent *e;	870	struct dirent *e;
618	int errorno;	871	int errorno;
619		872
620	pthread_mutex_lock (&readdirlock);	873	LOCK (readdirlock);
621		874
622	e = readdir (dirp);	875	e = readdir (dirp);
623	errorno = errno;	876	errorno = errno;
624		877
625	if (e)	878	if (e)
…		…
628	strcpy (ent->d_name, e->d_name);	881	strcpy (ent->d_name, e->d_name);
629	}	882	}
630	else	883	else
631	*res = 0;	884	*res = 0;
632		885
633	pthread_mutex_unlock (&readdirlock);	886	UNLOCK (readdirlock);
634		887
635	errno = errorno;	888	errno = errorno;
636	return e ? 0 : -1;	889	return e ? 0 : -1;
637	}	890	}
638	#endif	891	#endif
639		892
640	/* sendfile always needs emulation */	893	/* sendfile always needs emulation */
641	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count)	894	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
642	{	895	{
643	ssize_t res;	896	ssize_t res;
644		897
645	if (!count)	898	if (!count)
646	return 0;	899	return 0;
…		…
657	{	910	{
658	off_t sbytes;	911	off_t sbytes;
659	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);	912	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
660		913
661	if (res < 0 && sbytes)	914	if (res < 0 && sbytes)
662	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */	915	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
663	res = sbytes;	916	res = sbytes;
664	}	917	}
665		918
666	# elif __hpux	919	# elif __hpux
667	res = sendfile (ofd, ifd, offset, count, 0, 0);	920	res = sendfile (ofd, ifd, offset, count, 0, 0);
…		…
695	#endif	948	#endif
696	)	949	)
697	)	950	)
698	{	951	{
699	/* emulate sendfile. this is a major pain in the ass */	952	/* emulate sendfile. this is a major pain in the ass */
700	char buf[4096];	953	dBUF;
		954
701	res = 0;	955	res = 0;
702		956
703	while (count)	957	while (count)
704	{	958	{
705	ssize_t cnt;	959	ssize_t cnt;
706		960
707	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);	961	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
708		962
709	if (cnt <= 0)	963	if (cnt <= 0)
710	{	964	{
711	if (cnt && !res) res = -1;	965	if (cnt && !res) res = -1;
712	break;	966	break;
713	}	967	}
714		968
715	cnt = write (ofd, buf, cnt);	969	cnt = write (ofd, aio_buf, cnt);
716		970
717	if (cnt <= 0)	971	if (cnt <= 0)
718	{	972	{
719	if (cnt && !res) res = -1;	973	if (cnt && !res) res = -1;
720	break;	974	break;
…		…
728		982
729	return res;	983	return res;
730	}	984	}
731		985
732	/* read a full directory */	986	/* read a full directory */
733	static int scandir_ (const char *path, void **namesp)	987	static void scandir_ (aio_req req, worker *self)
734	{	988	{
735	DIR *dirp = opendir (path);	989	DIR *dirp;
736	union	990	union
737	{	991	{
738	struct dirent d;	992	struct dirent d;
739	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];	993	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
740	} u;	994	} *u;
741	struct dirent *entp;	995	struct dirent *entp;
742	char *name, *names;	996	char *name, *names;
743	int memlen = 4096;	997	int memlen = 4096;
744	int memofs = 0;	998	int memofs = 0;
745	int res = 0;	999	int res = 0;
746	int errorno;	1000	int errorno;
747		1001
748	if (!dirp)	1002	LOCK (wrklock);
749	return -1;	1003	self->dirp = dirp = opendir (req->ptr1);
750		1004	self->dbuf = u = malloc (sizeof (*u));
		1005	req->flags |= FLAG_PTR2_FREE;
751	names = malloc (memlen);	1006	req->ptr2 = names = malloc (memlen);
		1007	UNLOCK (wrklock);
		1008
		1009	if (dirp && u && names)
		1010	for (;;)
		1011	{
		1012	errno = 0;
		1013	readdir_r (dirp, &u->d, &entp);
		1014
		1015	if (!entp)
		1016	break;
		1017
		1018	name = entp->d_name;
		1019
		1020	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
		1021	{
		1022	int len = strlen (name) + 1;
		1023
		1024	res++;
		1025
		1026	while (memofs + len > memlen)
		1027	{
		1028	memlen *= 2;
		1029	LOCK (wrklock);
		1030	req->ptr2 = names = realloc (names, memlen);
		1031	UNLOCK (wrklock);
		1032
		1033	if (!names)
		1034	break;
		1035	}
		1036
		1037	memcpy (names + memofs, name, len);
		1038	memofs += len;
		1039	}
		1040	}
		1041
		1042	if (errno)
		1043	res = -1;
		1044
		1045	req->result = res;
		1046	}
		1047
		1048	/*****************************************************************************/
		1049
		1050	static void *aio_proc (void *thr_arg)
		1051	{
		1052	aio_req req;
		1053	struct timespec ts;
		1054	worker *self = (worker *)thr_arg;
		1055
		1056	/* try to distribute timeouts somewhat evenly */
		1057	ts.tv_nsec = (((unsigned long)self + (unsigned long)ts.tv_sec) & 1023UL)
		1058	* (1000000000UL / 1024UL);
752		1059
753	for (;;)	1060	for (;;)
754	{	1061	{
755	errno = 0, readdir_r (dirp, &u.d, &entp);	1062	ts.tv_sec = time (0) + IDLE_TIMEOUT;
756		1063
757	if (!entp)	1064	LOCK (reqlock);
758	break;
759
760	name = entp->d_name;
761
762	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
763	{
764	int len = strlen (name) + 1;
765
766	res++;
767
768	while (memofs + len > memlen)
769	{
770	memlen *= 2;
771	names = realloc (names, memlen);
772	if (!names)
773	break;
774	}
775
776	memcpy (names + memofs, name, len);
777	memofs += len;
778	}
779	}
780
781	errorno = errno;
782	closedir (dirp);
783
784	if (errorno)
785	{
786	free (names);
787	errno = errorno;
788	res = -1;
789	}
790
791	*namesp = (void *)names;
792	return res;
793	}
794
795	/*****************************************************************************/
796
797	static void *aio_proc (void *thr_arg)
798	{
799	aio_req req;
800	int type;
801
802	do
803	{
804	pthread_mutex_lock (&reqlock);
805		1065
806	for (;;)	1066	for (;;)
807	{	1067	{
808	req = reqs;	1068	self->req = req = reqq_shift (&req_queue);
809
810	if (reqs)
811	{
812	reqs = reqs->next;
813	if (!reqs) reqe = 0;
814	}
815		1069
816	if (req)	1070	if (req)
817	break;	1071	break;
818		1072
		1073	++idle;
		1074
		1075	if (pthread_cond_timedwait (&reqwait, &reqlock, &ts)
		1076	== ETIMEDOUT)
		1077	{
		1078	if (idle > max_idle)
		1079	{
		1080	--idle;
		1081	UNLOCK (reqlock);
		1082	LOCK (wrklock);
		1083	--started;
		1084	UNLOCK (wrklock);
		1085	goto quit;
		1086	}
		1087
		1088	/* we are allowed to idle, so do so without any timeout */
819	pthread_cond_wait (&reqwait, &reqlock);	1089	pthread_cond_wait (&reqwait, &reqlock);
		1090	ts.tv_sec = time (0) + IDLE_TIMEOUT;
		1091	}
		1092
		1093	--idle;
820	}	1094	}
821		1095
822	pthread_mutex_unlock (&reqlock);	1096	--nready;
		1097
		1098	UNLOCK (reqlock);
823		1099
824	errno = 0; /* strictly unnecessary */	1100	errno = 0; /* strictly unnecessary */
825	type = req->type; /* remember type for QUIT check */
826		1101
827	if (!(req->flags & FLAG_CANCELLED))	1102	if (!(req->flags & FLAG_CANCELLED))
828	switch (type)	1103	switch (req->type)
829	{	1104	{
830	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;	1105	case REQ_READ: req->result = pread (req->int1, req->ptr1, req->size, req->offs); break;
831	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;	1106	case REQ_WRITE: req->result = pwrite (req->int1, req->ptr1, req->size, req->offs); break;
832		1107
833	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	1108	case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
834	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;	1109	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
835		1110
836	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	1111	case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
837	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	1112	case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
838	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	1113	case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
839		1114
840	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;	1115	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
841	case REQ_CLOSE: req->result = close (req->fd); break;	1116	case REQ_CLOSE: req->result = close (req->int1); break;
842	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	1117	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
843	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;	1118	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
844	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;	1119	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
845	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;	1120	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
846	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;	1121	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
		1122	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
		1123	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
847		1124
848	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	1125	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
849	case REQ_FSYNC: req->result = fsync (req->fd); break;	1126	case REQ_FSYNC: req->result = fsync (req->int1); break;
850	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;	1127	case REQ_READDIR: scandir_ (req, self); break;
851		1128
852	case REQ_SLEEP:	1129	case REQ_BUSY:
853	{	1130	{
854	struct timeval tv;	1131	struct timeval tv;
855		1132
856	tv.tv_sec = req->fd;	1133	tv.tv_sec = req->int1;
857	tv.tv_usec = req->fd2;	1134	tv.tv_usec = req->int2;
858		1135
859	req->result = select (0, 0, 0, 0, &tv);	1136	req->result = select (0, 0, 0, 0, &tv);
860	}	1137	}
861		1138
862	case REQ_GROUP:	1139	case REQ_GROUP:
863	case REQ_NOP:	1140	case REQ_NOP:
		1141	break;
		1142
864	case REQ_QUIT:	1143	case REQ_QUIT:
865	break;	1144	goto quit;
866		1145
867	default:	1146	default:
868	req->result = ENOSYS;	1147	req->result = ENOSYS;
869	break;	1148	break;
870	}	1149	}
871		1150
872	req->errorno = errno;	1151	req->errorno = errno;
873		1152
874	pthread_mutex_lock (&reslock);	1153	LOCK (reslock);
875		1154
876	req->next = 0;	1155	++npending;
877		1156
878	if (rese)	1157	if (!reqq_push (&res_queue, req))
879	{
880	rese->next = req;
881	rese = req;
882	}
883	else
884	{
885	rese = ress = req;
886
887	/* write a dummy byte to the pipe so fh becomes ready */	1158	/* write a dummy byte to the pipe so fh becomes ready */
888	write (respipe [1], &respipe, 1);	1159	write (respipe [1], &respipe, 1);
889	}
890		1160
891	pthread_mutex_unlock (&reslock);	1161	self->req = 0;
		1162	worker_clear (self);
		1163
		1164	UNLOCK (reslock);
892	}	1165	}
893	while (type != REQ_QUIT);	1166
		1167	quit:
		1168	LOCK (wrklock);
		1169	worker_free (self);
		1170	UNLOCK (wrklock);
894		1171
895	return 0;	1172	return 0;
896	}	1173	}
897		1174
898	/*****************************************************************************/	1175	/*****************************************************************************/
899		1176
900	static void atfork_prepare (void)	1177	static void atfork_prepare (void)
901	{	1178	{
902	pthread_mutex_lock (&reqlock);	1179	LOCK (wrklock);
903	pthread_mutex_lock (&reslock);	1180	LOCK (reqlock);
		1181	LOCK (reslock);
904	#if !HAVE_PREADWRITE	1182	#if !HAVE_PREADWRITE
905	pthread_mutex_lock (&preadwritelock);	1183	LOCK (preadwritelock);
906	#endif	1184	#endif
907	#if !HAVE_READDIR_R	1185	#if !HAVE_READDIR_R
908	pthread_mutex_lock (&readdirlock);	1186	LOCK (readdirlock);
909	#endif	1187	#endif
910	}	1188	}
911		1189
912	static void atfork_parent (void)	1190	static void atfork_parent (void)
913	{	1191	{
914	#if !HAVE_READDIR_R	1192	#if !HAVE_READDIR_R
915	pthread_mutex_unlock (&readdirlock);	1193	UNLOCK (readdirlock);
916	#endif	1194	#endif
917	#if !HAVE_PREADWRITE	1195	#if !HAVE_PREADWRITE
918	pthread_mutex_unlock (&preadwritelock);	1196	UNLOCK (preadwritelock);
919	#endif	1197	#endif
920	pthread_mutex_unlock (&reslock);	1198	UNLOCK (reslock);
921	pthread_mutex_unlock (&reqlock);	1199	UNLOCK (reqlock);
		1200	UNLOCK (wrklock);
922	}	1201	}
923		1202
924	static void atfork_child (void)	1203	static void atfork_child (void)
925	{	1204	{
926	aio_req prv;	1205	aio_req prv;
927		1206
928	started = 0;	1207	while (prv = reqq_shift (&req_queue))
		1208	req_free (prv);
929		1209
930	while (reqs)	1210	while (prv = reqq_shift (&res_queue))
		1211	req_free (prv);
		1212
		1213	while (wrk_first.next != &wrk_first)
931	{	1214	{
932	prv = reqs;	1215	worker *wrk = wrk_first.next;
933	reqs = prv->next;	1216
		1217	if (wrk->req)
		1218	req_free (wrk->req);
		1219
		1220	worker_clear (wrk);
934	req_free (prv);	1221	worker_free (wrk);
935	}	1222	}
936		1223
937	reqs = reqe = 0;	1224	started = 0;
938		1225	idle = 0;
939	while (ress)	1226	nreqs = 0;
940	{	1227	nready = 0;
941	prv = ress;	1228	npending = 0;
942	ress = prv->next;
943	req_free (prv);
944	}
945
946	ress = rese = 0;
947		1229
948	close (respipe [0]);	1230	close (respipe [0]);
949	close (respipe [1]);	1231	close (respipe [1]);
950	create_pipe ();	1232	create_pipe ();
951		1233
…		…
978	PROTOTYPES: ENABLE	1260	PROTOTYPES: ENABLE
979		1261
980	BOOT:	1262	BOOT:
981	{	1263	{
982	HV *stash = gv_stashpv ("IO::AIO", 1);	1264	HV *stash = gv_stashpv ("IO::AIO", 1);
		1265
983	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	1266	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
984	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	1267	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
985	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));	1268	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
		1269	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
		1270	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
		1271	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
986		1272
987	create_pipe ();	1273	create_pipe ();
988	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	1274	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
989	}	1275	}
990		1276
991	void	1277	void
992	min_parallel (nthreads)	1278	max_poll_reqs (int nreqs)
993	int nthreads
994	PROTOTYPE: $	1279	PROTOTYPE: $
		1280	CODE:
		1281	max_poll_reqs = nreqs;
995		1282
996	void	1283	void
997	max_parallel (nthreads)	1284	max_poll_time (double nseconds)
998	int nthreads
999	PROTOTYPE: $	1285	PROTOTYPE: $
		1286	CODE:
		1287	max_poll_time = nseconds * AIO_TICKS;
		1288
		1289	void
		1290	min_parallel (int nthreads)
		1291	PROTOTYPE: $
		1292
		1293	void
		1294	max_parallel (int nthreads)
		1295	PROTOTYPE: $
		1296
		1297	void
		1298	max_idle (int nthreads)
		1299	PROTOTYPE: $
		1300	CODE:
		1301	set_max_idle (nthreads);
1000		1302
1001	int	1303	int
1002	max_outstanding (nreqs)	1304	max_outstanding (int maxreqs)
1003	int nreqs	1305	PROTOTYPE: $
1004	PROTOTYPE: $
1005	CODE:	1306	CODE:
1006	RETVAL = max_outstanding;	1307	RETVAL = max_outstanding;
1007	max_outstanding = nreqs;	1308	max_outstanding = maxreqs;
		1309	OUTPUT:
		1310	RETVAL
1008		1311
1009	void	1312	void
1010	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	1313	aio_open (pathname,flags,mode,callback=&PL_sv_undef)
1011	SV * pathname	1314	SV * pathname
1012	int flags	1315	int flags
…		…
1016	PPCODE:	1319	PPCODE:
1017	{	1320	{
1018	dREQ;	1321	dREQ;
1019		1322
1020	req->type = REQ_OPEN;	1323	req->type = REQ_OPEN;
1021	req->data = newSVsv (pathname);	1324	req->sv1 = newSVsv (pathname);
1022	req->dataptr = SvPVbyte_nolen (req->data);	1325	req->ptr1 = SvPVbyte_nolen (req->sv1);
1023	req->fd = flags;	1326	req->int1 = flags;
1024	req->mode = mode;	1327	req->mode = mode;
1025		1328
1026	REQ_SEND;	1329	REQ_SEND;
1027	}	1330	}
1028		1331
…		…
1038	PPCODE:	1341	PPCODE:
1039	{	1342	{
1040	dREQ;	1343	dREQ;
1041		1344
1042	req->type = ix;	1345	req->type = ix;
1043	req->fh = newSVsv (fh);	1346	req->fh = newSVsv (fh);
1044	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1347	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1045		1348
1046	REQ_SEND (req);	1349	REQ_SEND (req);
1047	}	1350	}
1048		1351
1049	void	1352	void
…		…
1058	aio_read = REQ_READ	1361	aio_read = REQ_READ
1059	aio_write = REQ_WRITE	1362	aio_write = REQ_WRITE
1060	PROTOTYPE: $$$$$;$	1363	PROTOTYPE: $$$$$;$
1061	PPCODE:	1364	PPCODE:
1062	{	1365	{
1063	aio_req req;
1064	STRLEN svlen;	1366	STRLEN svlen;
1065	char *svptr = SvPVbyte (data, svlen);	1367	char *svptr = SvPVbyte (data, svlen);
1066		1368
1067	SvUPGRADE (data, SVt_PV);	1369	SvUPGRADE (data, SVt_PV);
1068	SvPOK_on (data);	1370	SvPOK_on (data);
…		…
1090		1392
1091	{	1393	{
1092	dREQ;	1394	dREQ;
1093		1395
1094	req->type = ix;	1396	req->type = ix;
1095	req->fh = newSVsv (fh);	1397	req->fh = newSVsv (fh);
1096	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1398	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
1097	: IoOFP (sv_2io (fh)));	1399	: IoOFP (sv_2io (fh)));
1098	req->offset = offset;	1400	req->offs = offset;
1099	req->length = length;	1401	req->size = length;
1100	req->data = SvREFCNT_inc (data);	1402	req->sv1 = SvREFCNT_inc (data);
1101	req->dataptr = (char *)svptr + dataoffset;	1403	req->ptr1 = (char *)svptr + dataoffset;
		1404	req->stroffset = dataoffset;
1102		1405
1103	if (!SvREADONLY (data))	1406	if (!SvREADONLY (data))
1104	{	1407	{
1105	SvREADONLY_on (data);	1408	SvREADONLY_on (data);
1106	req->data2ptr = (void *)data;	1409	req->flags |= FLAG_SV1_RO_OFF;
1107	}	1410	}
1108		1411
1109	REQ_SEND;	1412	REQ_SEND;
1110	}	1413	}
		1414	}
		1415
		1416	void
		1417	aio_readlink (path,callback=&PL_sv_undef)
		1418	SV * path
		1419	SV * callback
		1420	PROTOTYPE: $$;$
		1421	PPCODE:
		1422	{
		1423	SV *data;
		1424	dREQ;
		1425
		1426	data = newSV (NAME_MAX);
		1427	SvPOK_on (data);
		1428
		1429	req->type = REQ_READLINK;
		1430	req->fh = newSVsv (path);
		1431	req->ptr2 = SvPVbyte_nolen (req->fh);
		1432	req->sv1 = data;
		1433	req->ptr1 = SvPVbyte_nolen (data);
		1434
		1435	REQ_SEND;
1111	}	1436	}
1112		1437
1113	void	1438	void
1114	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1439	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)
1115	SV * out_fh	1440	SV * out_fh
…		…
1121	PPCODE:	1446	PPCODE:
1122	{	1447	{
1123	dREQ;	1448	dREQ;
1124		1449
1125	req->type = REQ_SENDFILE;	1450	req->type = REQ_SENDFILE;
1126	req->fh = newSVsv (out_fh);	1451	req->fh = newSVsv (out_fh);
1127	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1452	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1128	req->fh2 = newSVsv (in_fh);	1453	req->sv2 = newSVsv (in_fh);
1129	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1454	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1130	req->offset = in_offset;	1455	req->offs = in_offset;
1131	req->length = length;	1456	req->size = length;
1132		1457
1133	REQ_SEND;	1458	REQ_SEND;
1134	}	1459	}
1135		1460
1136	void	1461	void
…		…
1143	PPCODE:	1468	PPCODE:
1144	{	1469	{
1145	dREQ;	1470	dREQ;
1146		1471
1147	req->type = REQ_READAHEAD;	1472	req->type = REQ_READAHEAD;
1148	req->fh = newSVsv (fh);	1473	req->fh = newSVsv (fh);
1149	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1474	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1150	req->offset = offset;	1475	req->offs = offset;
1151	req->length = length;	1476	req->size = length;
1152		1477
1153	REQ_SEND;	1478	REQ_SEND;
1154	}	1479	}
1155		1480
1156	void	1481	void
…		…
1162	aio_lstat = REQ_LSTAT	1487	aio_lstat = REQ_LSTAT
1163	PPCODE:	1488	PPCODE:
1164	{	1489	{
1165	dREQ;	1490	dREQ;
1166		1491
1167	New (0, req->statdata, 1, Stat_t);	1492	req->ptr2 = malloc (sizeof (Stat_t));
1168	if (!req->statdata)	1493	if (!req->ptr2)
1169	{	1494	{
1170	req_free (req);	1495	req_free (req);
1171	croak ("out of memory during aio_req->statdata allocation");	1496	croak ("out of memory during aio_stat statdata allocation");
1172	}	1497	}
		1498
		1499	req->flags |= FLAG_PTR2_FREE;
1173		1500
1174	if (SvPOK (fh_or_path))	1501	if (SvPOK (fh_or_path))
1175	{	1502	{
1176	req->type = ix;	1503	req->type = ix;
1177	req->data = newSVsv (fh_or_path);	1504	req->sv1 = newSVsv (fh_or_path);
1178	req->dataptr = SvPVbyte_nolen (req->data);	1505	req->ptr1 = SvPVbyte_nolen (req->sv1);
1179	}	1506	}
1180	else	1507	else
1181	{	1508	{
1182	req->type = REQ_FSTAT;	1509	req->type = REQ_FSTAT;
1183	req->fh = newSVsv (fh_or_path);	1510	req->fh = newSVsv (fh_or_path);
1184	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1511	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1185	}	1512	}
1186		1513
1187	REQ_SEND;	1514	REQ_SEND;
1188	}	1515	}
1189		1516
1190	void	1517	void
1191	aio_unlink (pathname,callback=&PL_sv_undef)	1518	aio_unlink (pathname,callback=&PL_sv_undef)
1192	SV * pathname	1519	SV * pathname
1193	SV * callback	1520	SV * callback
1194	ALIAS:	1521	ALIAS:
1195	aio_unlink = REQ_UNLINK	1522	aio_unlink = REQ_UNLINK
1196	aio_rmdir = REQ_RMDIR	1523	aio_rmdir = REQ_RMDIR
1197	aio_readdir = REQ_READDIR	1524	aio_readdir = REQ_READDIR
1198	PPCODE:	1525	PPCODE:
1199	{	1526	{
1200	dREQ;	1527	dREQ;
1201		1528
1202	req->type = ix;	1529	req->type = ix;
1203	req->data = newSVsv (pathname);	1530	req->sv1 = newSVsv (pathname);
1204	req->dataptr = SvPVbyte_nolen (req->data);	1531	req->ptr1 = SvPVbyte_nolen (req->sv1);
1205		1532
1206	REQ_SEND;	1533	REQ_SEND;
1207	}	1534	}
1208		1535
1209	void	1536	void
1210	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1537	aio_link (oldpath,newpath,callback=&PL_sv_undef)
1211	SV * oldpath	1538	SV * oldpath
1212	SV * newpath	1539	SV * newpath
1213	SV * callback	1540	SV * callback
1214	ALIAS:	1541	ALIAS:
1215	aio_link = REQ_LINK	1542	aio_link = REQ_LINK
1216	aio_symlink = REQ_SYMLINK	1543	aio_symlink = REQ_SYMLINK
1217	aio_rename = REQ_RENAME	1544	aio_rename = REQ_RENAME
1218	PPCODE:	1545	PPCODE:
1219	{	1546	{
1220	dREQ;	1547	dREQ;
1221		1548
1222	req->type = ix;	1549	req->type = ix;
1223	req->fh = newSVsv (oldpath);	1550	req->fh = newSVsv (oldpath);
1224	req->data2ptr = SvPVbyte_nolen (req->fh);	1551	req->ptr2 = SvPVbyte_nolen (req->fh);
1225	req->data = newSVsv (newpath);	1552	req->sv1 = newSVsv (newpath);
1226	req->dataptr = SvPVbyte_nolen (req->data);	1553	req->ptr1 = SvPVbyte_nolen (req->sv1);
1227		1554
1228	REQ_SEND;	1555	REQ_SEND;
1229	}	1556	}
1230		1557
1231	void	1558	void
1232	aio_sleep (delay,callback=&PL_sv_undef)	1559	aio_mknod (pathname,mode,dev,callback=&PL_sv_undef)
1233	double delay	1560	SV * pathname
1234	SV * callback	1561	SV * callback
		1562	UV mode
		1563	UV dev
1235	PPCODE:	1564	PPCODE:
1236	{	1565	{
1237	dREQ;	1566	dREQ;
		1567
		1568	req->type = REQ_MKNOD;
		1569	req->sv1 = newSVsv (pathname);
		1570	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1571	req->mode = (mode_t)mode;
		1572	req->offs = dev;
		1573
		1574	REQ_SEND;
		1575	}
1238		1576
		1577	void
		1578	aio_busy (delay,callback=&PL_sv_undef)
		1579	double delay
		1580	SV * callback
		1581	PPCODE:
		1582	{
		1583	dREQ;
		1584
1239	req->type = REQ_SLEEP;	1585	req->type = REQ_BUSY;
1240	req->fd = delay < 0. ? 0 : delay;	1586	req->int1 = delay < 0. ? 0 : delay;
1241	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1587	req->int2 = delay < 0. ? 0 : 1000. * (delay - req->int1);
1242		1588
1243	REQ_SEND;	1589	REQ_SEND;
1244	}	1590	}
1245		1591
1246	void	1592	void
…		…
1250	PPCODE:	1596	PPCODE:
1251	{	1597	{
1252	dREQ;	1598	dREQ;
1253		1599
1254	req->type = REQ_GROUP;	1600	req->type = REQ_GROUP;
		1601
1255	req_send (req);	1602	req_send (req);
1256
1257	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1603	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1258	}	1604	}
1259		1605
1260	void	1606	void
1261	aio_nop (callback=&PL_sv_undef)	1607	aio_nop (callback=&PL_sv_undef)
1262	SV * callback	1608	SV * callback
1263	PPCODE:	1609	PPCODE:
1264	{	1610	{
1265	dREQ;	1611	dREQ;
1266		1612
1267	req->type = REQ_NOP;	1613	req->type = REQ_NOP;
1268		1614
1269	REQ_SEND;	1615	REQ_SEND;
1270	}	1616	}
1271		1617
1272	#if 0	1618	int
1273		1619	aioreq_pri (int pri = 0)
1274	void	1620	PROTOTYPE: ;$
1275	aio_pri (int pri = DEFAULT_PRI)
1276	CODE:	1621	CODE:
		1622	RETVAL = next_pri - PRI_BIAS;
		1623	if (items > 0)
		1624	{
1277	if (pri < PRI_MIN) pri = PRI_MIN;	1625	if (pri < PRI_MIN) pri = PRI_MIN;
1278	if (pri > PRI_MAX) pri = PRI_MAX;	1626	if (pri > PRI_MAX) pri = PRI_MAX;
1279	next_pri = pri + PRI_BIAS;	1627	next_pri = pri + PRI_BIAS;
		1628	}
		1629	OUTPUT:
		1630	RETVAL
1280		1631
1281	#endif	1632	void
		1633	aioreq_nice (int nice = 0)
		1634	CODE:
		1635	nice = next_pri - nice;
		1636	if (nice < PRI_MIN) nice = PRI_MIN;
		1637	if (nice > PRI_MAX) nice = PRI_MAX;
		1638	next_pri = nice + PRI_BIAS;
1282		1639
1283	void	1640	void
1284	flush ()	1641	flush ()
1285	PROTOTYPE:	1642	PROTOTYPE:
1286	CODE:	1643	CODE:
1287	while (nreqs)	1644	while (nreqs)
1288	{	1645	{
1289	poll_wait ();	1646	poll_wait ();
1290	poll_cb ();	1647	poll_cb (0);
1291	}	1648	}
1292		1649
1293	void	1650	void
1294	poll()	1651	poll()
1295	PROTOTYPE:	1652	PROTOTYPE:
1296	CODE:	1653	CODE:
1297	if (nreqs)	1654	if (nreqs)
1298	{	1655	{
1299	poll_wait ();	1656	poll_wait ();
1300	poll_cb ();	1657	poll_cb (0);
1301	}	1658	}
1302		1659
1303	int	1660	int
1304	poll_fileno()	1661	poll_fileno()
1305	PROTOTYPE:	1662	PROTOTYPE:
…		…
1329	CODE:	1686	CODE:
1330	RETVAL = nreqs;	1687	RETVAL = nreqs;
1331	OUTPUT:	1688	OUTPUT:
1332	RETVAL	1689	RETVAL
1333		1690
		1691	int
		1692	nready()
		1693	PROTOTYPE:
		1694	CODE:
		1695	RETVAL = get_nready ();
		1696	OUTPUT:
		1697	RETVAL
		1698
		1699	int
		1700	npending()
		1701	PROTOTYPE:
		1702	CODE:
		1703	RETVAL = get_npending ();
		1704	OUTPUT:
		1705	RETVAL
		1706
		1707	int
		1708	nthreads()
		1709	PROTOTYPE:
		1710	CODE:
		1711	if (WORDACCESS_UNSAFE) LOCK (wrklock);
		1712	RETVAL = started;
		1713	if (WORDACCESS_UNSAFE) UNLOCK (wrklock);
		1714	OUTPUT:
		1715	RETVAL
		1716
1334	PROTOTYPES: DISABLE	1717	PROTOTYPES: DISABLE
1335		1718
1336	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1719	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1337		1720
1338	void	1721	void
1339	cancel (aio_req_ornot req)	1722	cancel (aio_req_ornot req)
1340	PROTOTYPE:
1341	CODE:	1723	CODE:
1342	req_cancel (req);	1724	req_cancel (req);
1343		1725
1344	void	1726	void
1345	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1727	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
…		…
1354	PPCODE:	1736	PPCODE:
1355	{	1737	{
1356	int i;	1738	int i;
1357	aio_req req;	1739	aio_req req;
1358		1740
1359	if (grp->fd == 2)	1741	if (grp->int1 == 2)
1360	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1742	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1361		1743
1362	for (i = 1; i < items; ++i )	1744	for (i = 1; i < items; ++i )
1363	{	1745	{
1364	if (GIMME_V != G_VOID)	1746	if (GIMME_V != G_VOID)
…		…
1366		1748
1367	req = SvAIO_REQ (ST (i));	1749	req = SvAIO_REQ (ST (i));
1368		1750
1369	if (req)	1751	if (req)
1370	{	1752	{
1371	++grp->length;	1753	++grp->size;
1372	req->grp = grp;	1754	req->grp = grp;
1373		1755
1374	req->grp_prev = 0;	1756	req->grp_prev = 0;
1375	req->grp_next = grp->grp_first;	1757	req->grp_next = grp->grp_first;
1376		1758
…		…
1381	}	1763	}
1382	}	1764	}
1383	}	1765	}
1384		1766
1385	void	1767	void
		1768	cancel_subs (aio_req_ornot req)
		1769	CODE:
		1770	req_cancel_subs (req);
		1771
		1772	void
1386	result (aio_req grp, ...)	1773	result (aio_req grp, ...)
1387	CODE:	1774	CODE:
1388	{	1775	{
1389	int i;	1776	int i;
		1777	AV *av;
		1778
		1779	grp->errorno = errno;
		1780
1390	AV *av = newAV ();	1781	av = newAV ();
1391		1782
1392	for (i = 1; i < items; ++i )	1783	for (i = 1; i < items; ++i )
1393	av_push (av, newSVsv (ST (i)));	1784	av_push (av, newSVsv (ST (i)));
1394		1785
1395	SvREFCNT_dec (grp->data);	1786	SvREFCNT_dec (grp->sv1);
1396	grp->data = (SV *)av;	1787	grp->sv1 = (SV *)av;
1397	}	1788	}
1398		1789
1399	void	1790	void
		1791	errno (aio_req grp, int errorno = errno)
		1792	CODE:
		1793	grp->errorno = errorno;
		1794
		1795	void
1400	feed_limit (aio_req grp, int limit)	1796	limit (aio_req grp, int limit)
1401	CODE:	1797	CODE:
1402	grp->fd2 = limit;	1798	grp->int2 = limit;
1403	aio_grp_feed (grp);	1799	aio_grp_feed (grp);
1404		1800
1405	void	1801	void
1406	feed (aio_req grp, SV *callback=&PL_sv_undef)	1802	feed (aio_req grp, SV *callback=&PL_sv_undef)
1407	CODE:	1803	CODE:
1408	{	1804	{
1409	SvREFCNT_dec (grp->fh2);	1805	SvREFCNT_dec (grp->sv2);
1410	grp->fh2 = newSVsv (callback);	1806	grp->sv2 = newSVsv (callback);
1411		1807
1412	if (grp->fd2 <= 0)	1808	if (grp->int2 <= 0)
1413	grp->fd2 = 2;	1809	grp->int2 = 2;
1414		1810
1415	aio_grp_feed (grp);	1811	aio_grp_feed (grp);
1416	}	1812	}
1417		1813

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