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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.61 by root, Mon Oct 23 22:44:21 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_GROUP, REQ_NOP,	104	REQ_GROUP, REQ_NOP,
61	REQ_SLEEP,	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
71	SV *data, *callback;	115	SV *callback, *fh;
72	SV *fh, *fh2;	116	SV *sv1, *sv2;
73	void *dataptr, *data2ptr;	117	void *ptr1, *ptr2;
74	Stat_t *statdata;
75	off_t offset;	118	off_t offs;
76	size_t length;	119	size_t size;
77	ssize_t result;	120	ssize_t result;
78		121
79	STRLEN dataoffset;	122	STRLEN stroffset;
80	int type;	123	int type;
81	int fd, fd2;	124	int int1, int2;
82	int errorno;	125	int errorno;
83	mode_t mode; /* open */	126	mode_t mode; /* open */
84		127
85	unsigned char flags;	128	unsigned char flags;
86	unsigned char pri;	129	unsigned char pri;
…		…
88	SV *self; /* the perl counterpart of this request, if any */	131	SV *self; /* the perl counterpart of this request, if any */
89	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;	132	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
90	} aio_cb;	133	} aio_cb;
91		134
92	enum {	135	enum {
93	FLAG_CANCELLED = 0x01,	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) */
94	};	139	};
95		140
96	typedef aio_cb *aio_req;	141	typedef aio_cb *aio_req;
97	typedef aio_cb *aio_req_ornot;	142	typedef aio_cb *aio_req_ornot;
98		143
…		…
100	PRI_MIN = -4,	145	PRI_MIN = -4,
101	PRI_MAX = 4,	146	PRI_MAX = 4,
102		147
103	DEFAULT_PRI = 0,	148	DEFAULT_PRI = 0,
104	PRI_BIAS = -PRI_MIN,	149	PRI_BIAS = -PRI_MIN,
		150	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
105	};	151	};
106		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
107	static int next_pri = DEFAULT_PRI + PRI_BIAS;	165	static int next_pri = DEFAULT_PRI + PRI_BIAS;
108		166
109	static int started, wanted;	167	static unsigned int started, idle, wanted;
110	static volatile int nreqs;	168
111	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;
112	static int respipe [2];	221	static int respipe [2];
113		222
114	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	223	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
115	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;	224	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
116	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	225	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
117		226
118	static volatile aio_req reqs, reqe; /* queue start, queue end */	227	#if WORDACCESS_UNSAFE
119	static volatile aio_req ress, rese; /* queue start, queue end */
120		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 ();
121	static void req_invoke (aio_req req);	325	static void req_invoke (aio_req req);
122	static void req_free (aio_req req);	326	static void req_free (aio_req req);
		327	static void req_cancel (aio_req req);
123		328
124	/* must be called at most once */	329	/* must be called at most once */
125	static SV *req_sv (aio_req req, const char *klass)	330	static SV *req_sv (aio_req req, const char *klass)
126	{	331	{
127	if (!req->self)	332	if (!req->self)
…		…
145	return mg ? (aio_req)mg->mg_ptr : 0;	350	return mg ? (aio_req)mg->mg_ptr : 0;
146	}	351	}
147		352
148	static void aio_grp_feed (aio_req grp)	353	static void aio_grp_feed (aio_req grp)
149	{	354	{
150	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	355	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
151	{	356	{
152	int old_len = grp->length;	357	int old_len = grp->size;
153		358
154	if (grp->fh2 && SvOK (grp->fh2))	359	if (grp->sv2 && SvOK (grp->sv2))
155	{	360	{
156	dSP;	361	dSP;
157		362
158	ENTER;	363	ENTER;
159	SAVETMPS;	364	SAVETMPS;
160	PUSHMARK (SP);	365	PUSHMARK (SP);
161	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	366	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
162	PUTBACK;	367	PUTBACK;
163	call_sv (grp->fh2, G_VOID | G_EVAL);	368	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
164	SPAGAIN;	369	SPAGAIN;
165	FREETMPS;	370	FREETMPS;
166	LEAVE;	371	LEAVE;
167	}	372	}
168		373
169	/* stop if no progress has been made */	374	/* stop if no progress has been made */
170	if (old_len == grp->length)	375	if (old_len == grp->size)
171	{	376	{
172	SvREFCNT_dec (grp->fh2);	377	SvREFCNT_dec (grp->sv2);
173	grp->fh2 = 0;	378	grp->sv2 = 0;
174	break;	379	break;
175	}	380	}
176	}	381	}
177	}	382	}
178		383
179	static void aio_grp_dec (aio_req grp)	384	static void aio_grp_dec (aio_req grp)
180	{	385	{
181	--grp->length;	386	--grp->size;
182		387
183	/* call feeder, if applicable */	388	/* call feeder, if applicable */
184	aio_grp_feed (grp);	389	aio_grp_feed (grp);
185		390
186	/* finish, if done */	391	/* finish, if done */
187	if (!grp->length && grp->fd)	392	if (!grp->size && grp->int1)
188	{	393	{
189	req_invoke (grp);	394	req_invoke (grp);
190	req_free (grp);	395	req_free (grp);
191	}	396	}
192	}	397	}
193		398
194	static void poll_wait ()	399	static void req_invoke (aio_req req)
195	{	400	{
196	while (nreqs)	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))
197	{	407	{
198	aio_req req;	408	ENTER;
199	pthread_mutex_lock (&reslock);	409	SAVETMPS;
200	req = ress;	410	PUSHMARK (SP);
201	pthread_mutex_unlock (&reslock);	411	EXTEND (SP, 1);
202		412
203	if (req)	413	switch (req->type)
204	return;	414	{
		415	case REQ_READDIR:
		416	{
		417	SV *rv = &PL_sv_undef;
205		418
206	fd_set rfd;	419	if (req->result >= 0)
207	FD_ZERO(&rfd);	420	{
208	FD_SET(respipe [0], &rfd);	421	int i;
		422	char *buf = req->ptr2;
		423	AV *av = newAV ();
209		424
210	select (respipe [0] + 1, &rfd, 0, 0, 0);	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;
211	}	513	}
212	}
213		514
214	static void req_invoke (aio_req req)	515	if (req->grp)
215	{
216	dSP;
217	int errorno = errno;
218
219	if (req->flags & FLAG_CANCELLED || !SvOK (req->callback))
220	return;
221
222	errno = req->errorno;
223
224	ENTER;
225	SAVETMPS;
226	PUSHMARK (SP);
227	EXTEND (SP, 1);
228
229	switch (req->type)
230	{	516	{
231	case REQ_READDIR:	517	aio_req grp = req->grp;
232	{
233	SV *rv = &PL_sv_undef;
234		518
235	if (req->result >= 0)	519	/* unlink request */
236	{	520	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
237	char *buf = req->data2ptr;	521	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
238	AV *av = newAV ();
239		522
240	while (req->result)	523	if (grp->grp_first == req)
241	{	524	grp->grp_first = req->grp_next;
242	SV *sv = newSVpv (buf, 0);
243		525
244	av_push (av, sv);	526	aio_grp_dec (grp);
245	buf += SvCUR (sv) + 1;
246	req->result--;
247	}
248
249	rv = sv_2mortal (newRV_noinc ((SV *)av));
250	}
251
252	PUSHs (rv);
253	}
254	break;
255
256	case REQ_OPEN:
257	{
258	/* convert fd to fh */
259	SV *fh;
260
261	PUSHs (sv_2mortal (newSViv (req->result)));
262	PUTBACK;
263	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
264	SPAGAIN;
265
266	fh = SvREFCNT_inc (POPs);
267
268	PUSHMARK (SP);
269	XPUSHs (sv_2mortal (fh));
270	}
271	break;
272
273	case REQ_GROUP:
274	req->fd = 2; /* mark group as finished */
275
276	if (req->data)
277	{
278	int i;
279	AV *av = (AV *)req->data;
280
281	EXTEND (SP, AvFILL (av) + 1);
282	for (i = 0; i <= AvFILL (av); ++i)
283	PUSHs (*av_fetch (av, i, 0));
284	}
285	break;
286
287	case REQ_NOP:
288	case REQ_SLEEP:
289	break;
290
291	default:
292	PUSHs (sv_2mortal (newSViv (req->result)));
293	break;
294	}	527	}
295
296
297	PUTBACK;
298	call_sv (req->callback, G_VOID | G_EVAL);
299	SPAGAIN;
300
301	FREETMPS;
302	LEAVE;
303
304	errno = errorno;
305		528
306	if (SvTRUE (ERRSV))	529	if (SvTRUE (ERRSV))
307	{	530	{
308	req_free (req);	531	req_free (req);
309	croak (0);	532	croak (0);
310	}	533	}
311	}	534	}
312		535
313	static void req_free (aio_req req)	536	static void req_free (aio_req req)
314	{	537	{
315	if (req->grp)
316	{
317	aio_req grp = req->grp;
318
319	/* unlink request */
320	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
321	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
322
323	if (grp->grp_first == req)
324	grp->grp_first = req->grp_next;
325
326	aio_grp_dec (grp);
327	}
328
329	if (req->self)	538	if (req->self)
330	{	539	{
331	sv_unmagic (req->self, PERL_MAGIC_ext);	540	sv_unmagic (req->self, PERL_MAGIC_ext);
332	SvREFCNT_dec (req->self);	541	SvREFCNT_dec (req->self);
333	}	542	}
334		543
335	SvREFCNT_dec (req->data);
336	SvREFCNT_dec (req->fh);	544	SvREFCNT_dec (req->fh);
		545	SvREFCNT_dec (req->sv1);
337	SvREFCNT_dec (req->fh2);	546	SvREFCNT_dec (req->sv2);
338	SvREFCNT_dec (req->callback);	547	SvREFCNT_dec (req->callback);
339	Safefree (req->statdata);
340		548
341	if (req->type == REQ_READDIR && req->result >= 0)	549	if (req->flags & FLAG_PTR2_FREE)
342	free (req->data2ptr);	550	free (req->ptr2);
343		551
344	Safefree (req);	552	Safefree (req);
345	}	553	}
346		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
347	static void req_cancel (aio_req req)	569	static void req_cancel (aio_req req)
348	{	570	{
349	req->flags |= FLAG_CANCELLED;	571	req->flags |= FLAG_CANCELLED;
350		572
351	if (req->type == REQ_GROUP)	573	req_cancel_subs (req);
352	{
353	aio_req sub;
354
355	for (sub = req->grp_first; sub; sub = sub->grp_next)
356	req_cancel (sub);
357	}
358	}
359
360	static int poll_cb ()
361	{
362	dSP;
363	int count = 0;
364	int do_croak = 0;
365	aio_req req;
366
367	for (;;)
368	{
369	pthread_mutex_lock (&reslock);
370	req = ress;
371
372	if (req)
373	{
374	ress = req->next;
375
376	if (!ress)
377	{
378	/* read any signals sent by the worker threads */
379	char buf [32];
380	while (read (respipe [0], buf, 32) == 32)
381	;
382
383	rese = 0;
384	}
385	}
386
387	pthread_mutex_unlock (&reslock);
388
389	if (!req)
390	break;
391
392	--nreqs;
393
394	if (req->type == REQ_QUIT)
395	started--;
396	else if (req->type == REQ_GROUP && req->length)
397	{
398	req->fd = 1; /* mark request as delayed */
399	continue;
400	}
401	else
402	{
403	if (req->type == REQ_READ)
404	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
405
406	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
407	SvREADONLY_off (req->data);
408
409	if (req->statdata)
410	{
411	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
412	PL_laststatval = req->result;
413	PL_statcache = *(req->statdata);
414	}
415
416	req_invoke (req);
417
418	count++;
419	}
420
421	req_free (req);
422	}
423
424	return count;
425	}	574	}
426		575
427	static void *aio_proc(void *arg);	576	static void *aio_proc(void *arg);
428		577
429	static void start_thread (void)	578	static void start_thread (void)
430	{	579	{
431	sigset_t fullsigset, oldsigset;	580	sigset_t fullsigset, oldsigset;
432	pthread_t tid;
433	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");
434		587
435	pthread_attr_init (&attr);	588	pthread_attr_init (&attr);
436	pthread_attr_setstacksize (&attr, STACKSIZE);	589	pthread_attr_setstacksize (&attr, STACKSIZE);
437	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
438		594
439	sigfillset (&fullsigset);	595	sigfillset (&fullsigset);
		596
		597	LOCK (wrklock);
440	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);	598	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
441		599
442	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)	600	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
443	started++;
444
445	sigprocmask (SIG_SETMASK, &oldsigset, 0);
446	}
447
448	static void req_send (aio_req req)
449	{
450	while (started < wanted && nreqs >= started)
451	start_thread ();
452
453	++nreqs;
454
455	pthread_mutex_lock (&reqlock);
456
457	req->next = 0;
458
459	if (reqe)
460	{	601	{
461	reqe->next = req;	602	wrk->prev = &wrk_first;
462	reqe = req;	603	wrk->next = wrk_first.next;
		604	wrk_first.next->prev = wrk;
		605	wrk_first.next = wrk;
		606	++started;
463	}	607	}
464	else	608	else
465	reqe = reqs = req;	609	free (wrk);
466		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);
467	pthread_cond_signal (&reqwait);	634	pthread_cond_signal (&reqwait);
468	pthread_mutex_unlock (&reqlock);	635	UNLOCK (reqlock);
469		636
470	if (nreqs > max_outstanding)	637	maybe_start_thread ();
471	for (;;)
472	{
473	poll_cb ();
474
475	if (nreqs <= max_outstanding)
476	break;
477
478	poll_wait ();
479	}
480	}	638	}
481		639
482	static void end_thread (void)	640	static void end_thread (void)
483	{	641	{
484	aio_req req;	642	aio_req req;
		643
485	Newz (0, req, 1, aio_cb);	644	Newz (0, req, 1, aio_cb);
		645
486	req->type = REQ_QUIT;	646	req->type = REQ_QUIT;
		647	req->pri = PRI_MAX + PRI_BIAS;
487		648
488	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);
489	}	664	}
490		665
491	static void min_parallel (int nthreads)	666	static void min_parallel (int nthreads)
492	{	667	{
493	if (wanted < nthreads)	668	if (wanted < nthreads)
494	wanted = nthreads;	669	wanted = nthreads;
495	}	670	}
496		671
497	static void max_parallel (int nthreads)	672	static void max_parallel (int nthreads)
498	{	673	{
499	int cur = started;
500
501	if (wanted > nthreads)	674	if (wanted > nthreads)
502	wanted = nthreads;	675	wanted = nthreads;
503		676
504	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)
505	{	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
506	end_thread ();	695	maybe_start_thread ();
507	cur--;	696
		697	FD_ZERO(&rfd);
		698	FD_SET(respipe [0], &rfd);
		699
		700	select (respipe [0] + 1, &rfd, 0, 0, 0);
508	}	701	}
		702	}
509		703
510	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 (;;)
511	{	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
512	poll_wait ();	774	poll_wait ();
513	poll_cb ();	775
		776	++maxreqs;
514	}	777	}
		778
		779	return count;
515	}	780	}
516		781
517	static void create_pipe ()	782	static void create_pipe ()
518	{	783	{
519	if (pipe (respipe))	784	if (pipe (respipe))
…		…
543	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)
544	{	809	{
545	ssize_t res;	810	ssize_t res;
546	off_t ooffset;	811	off_t ooffset;
547		812
548	pthread_mutex_lock (&preadwritelock);	813	LOCK (preadwritelock);
549	ooffset = lseek (fd, 0, SEEK_CUR);	814	ooffset = lseek (fd, 0, SEEK_CUR);
550	lseek (fd, offset, SEEK_SET);	815	lseek (fd, offset, SEEK_SET);
551	res = read (fd, buf, count);	816	res = read (fd, buf, count);
552	lseek (fd, ooffset, SEEK_SET);	817	lseek (fd, ooffset, SEEK_SET);
553	pthread_mutex_unlock (&preadwritelock);	818	UNLOCK (preadwritelock);
554		819
555	return res;	820	return res;
556	}	821	}
557		822
558	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)
559	{	824	{
560	ssize_t res;	825	ssize_t res;
561	off_t ooffset;	826	off_t ooffset;
562		827
563	pthread_mutex_lock (&preadwritelock);	828	LOCK (preadwritelock);
564	ooffset = lseek (fd, 0, SEEK_CUR);	829	ooffset = lseek (fd, 0, SEEK_CUR);
565	lseek (fd, offset, SEEK_SET);	830	lseek (fd, offset, SEEK_SET);
566	res = write (fd, buf, count);	831	res = write (fd, buf, count);
567	lseek (fd, offset, SEEK_SET);	832	lseek (fd, offset, SEEK_SET);
568	pthread_mutex_unlock (&preadwritelock);	833	UNLOCK (preadwritelock);
569		834
570	return res;	835	return res;
571	}	836	}
572	#endif	837	#endif
573		838
574	#if !HAVE_FDATASYNC	839	#if !HAVE_FDATASYNC
575	# define fdatasync fsync	840	# define fdatasync fsync
576	#endif	841	#endif
577		842
578	#if !HAVE_READAHEAD	843	#if !HAVE_READAHEAD
579	# define readahead aio_readahead	844	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
580		845
581	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)
582	{	847	{
583	char readahead_buf[4096];	848	dBUF;
584		849
585	while (count > 0)	850	while (count > 0)
586	{	851	{
587	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);	852	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
588		853
589	pread (fd, readahead_buf, len, offset);	854	pread (fd, aio_buf, len, offset);
590	offset += len;	855	offset += len;
591	count -= len;	856	count -= len;
592	}	857	}
593		858
594	errno = 0;	859	errno = 0;
595	}	860	}
		861
596	#endif	862	#endif
597		863
598	#if !HAVE_READDIR_R	864	#if !HAVE_READDIR_R
599	# define readdir_r aio_readdir_r	865	# define readdir_r aio_readdir_r
600		866
…		…
603	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)
604	{	870	{
605	struct dirent *e;	871	struct dirent *e;
606	int errorno;	872	int errorno;
607		873
608	pthread_mutex_lock (&readdirlock);	874	LOCK (readdirlock);
609		875
610	e = readdir (dirp);	876	e = readdir (dirp);
611	errorno = errno;	877	errorno = errno;
612		878
613	if (e)	879	if (e)
…		…
616	strcpy (ent->d_name, e->d_name);	882	strcpy (ent->d_name, e->d_name);
617	}	883	}
618	else	884	else
619	*res = 0;	885	*res = 0;
620		886
621	pthread_mutex_unlock (&readdirlock);	887	UNLOCK (readdirlock);
622		888
623	errno = errorno;	889	errno = errorno;
624	return e ? 0 : -1;	890	return e ? 0 : -1;
625	}	891	}
626	#endif	892	#endif
627		893
628	/* sendfile always needs emulation */	894	/* sendfile always needs emulation */
629	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)
630	{	896	{
631	ssize_t res;	897	ssize_t res;
632		898
633	if (!count)	899	if (!count)
634	return 0;	900	return 0;
…		…
645	{	911	{
646	off_t sbytes;	912	off_t sbytes;
647	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);	913	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
648		914
649	if (res < 0 && sbytes)	915	if (res < 0 && sbytes)
650	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */	916	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
651	res = sbytes;	917	res = sbytes;
652	}	918	}
653		919
654	# elif __hpux	920	# elif __hpux
655	res = sendfile (ofd, ifd, offset, count, 0, 0);	921	res = sendfile (ofd, ifd, offset, count, 0, 0);
…		…
683	#endif	949	#endif
684	)	950	)
685	)	951	)
686	{	952	{
687	/* emulate sendfile. this is a major pain in the ass */	953	/* emulate sendfile. this is a major pain in the ass */
688	char buf[4096];	954	dBUF;
		955
689	res = 0;	956	res = 0;
690		957
691	while (count)	958	while (count)
692	{	959	{
693	ssize_t cnt;	960	ssize_t cnt;
694		961
695	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);	962	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
696		963
697	if (cnt <= 0)	964	if (cnt <= 0)
698	{	965	{
699	if (cnt && !res) res = -1;	966	if (cnt && !res) res = -1;
700	break;	967	break;
701	}	968	}
702		969
703	cnt = write (ofd, buf, cnt);	970	cnt = write (ofd, aio_buf, cnt);
704		971
705	if (cnt <= 0)	972	if (cnt <= 0)
706	{	973	{
707	if (cnt && !res) res = -1;	974	if (cnt && !res) res = -1;
708	break;	975	break;
…		…
716		983
717	return res;	984	return res;
718	}	985	}
719		986
720	/* read a full directory */	987	/* read a full directory */
721	static int scandir_ (const char *path, void **namesp)	988	static void scandir_ (aio_req req, worker *self)
722	{	989	{
723	DIR *dirp = opendir (path);	990	DIR *dirp;
724	union	991	union
725	{	992	{
726	struct dirent d;	993	struct dirent d;
727	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];	994	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
728	} u;	995	} *u;
729	struct dirent *entp;	996	struct dirent *entp;
730	char *name, *names;	997	char *name, *names;
731	int memlen = 4096;	998	int memlen = 4096;
732	int memofs = 0;	999	int memofs = 0;
733	int res = 0;	1000	int res = 0;
734	int errorno;	1001	int errorno;
735		1002
736	if (!dirp)	1003	LOCK (wrklock);
737	return -1;	1004	self->dirp = dirp = opendir (req->ptr1);
738		1005	self->dbuf = u = malloc (sizeof (*u));
		1006	req->flags |= FLAG_PTR2_FREE;
739	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);
740		1060
741	for (;;)	1061	for (;;)
742	{	1062	{
743	errno = 0, readdir_r (dirp, &u.d, &entp);	1063	ts.tv_sec = time (0) + IDLE_TIMEOUT;
744		1064
745	if (!entp)	1065	LOCK (reqlock);
746	break;
747
748	name = entp->d_name;
749
750	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
751	{
752	int len = strlen (name) + 1;
753
754	res++;
755
756	while (memofs + len > memlen)
757	{
758	memlen *= 2;
759	names = realloc (names, memlen);
760	if (!names)
761	break;
762	}
763
764	memcpy (names + memofs, name, len);
765	memofs += len;
766	}
767	}
768
769	errorno = errno;
770	closedir (dirp);
771
772	if (errorno)
773	{
774	free (names);
775	errno = errorno;
776	res = -1;
777	}
778
779	*namesp = (void *)names;
780	return res;
781	}
782
783	/*****************************************************************************/
784
785	static void *aio_proc (void *thr_arg)
786	{
787	aio_req req;
788	int type;
789
790	do
791	{
792	pthread_mutex_lock (&reqlock);
793		1066
794	for (;;)	1067	for (;;)
795	{	1068	{
796	req = reqs;	1069	self->req = req = reqq_shift (&req_queue);
797
798	if (reqs)
799	{
800	reqs = reqs->next;
801	if (!reqs) reqe = 0;
802	}
803		1070
804	if (req)	1071	if (req)
805	break;	1072	break;
806		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 */
807	pthread_cond_wait (&reqwait, &reqlock);	1090	pthread_cond_wait (&reqwait, &reqlock);
		1091	ts.tv_sec = time (0) + IDLE_TIMEOUT;
		1092	}
		1093
		1094	--idle;
808	}	1095	}
809		1096
810	pthread_mutex_unlock (&reqlock);	1097	--nready;
		1098
		1099	UNLOCK (reqlock);
811		1100
812	errno = 0; /* strictly unnecessary */	1101	errno = 0; /* strictly unnecessary */
813	type = req->type; /* remember type for QUIT check */
814		1102
815	if (!(req->flags & FLAG_CANCELLED))	1103	if (!(req->flags & FLAG_CANCELLED))
816	switch (type)	1104	switch (req->type)
817	{	1105	{
818	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;
819	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;
820		1108
821	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;
822	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;
823		1111
824	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;
825	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;
826	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;
827		1115
828	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;
829	case REQ_CLOSE: req->result = close (req->fd); break;	1117	case REQ_CLOSE: req->result = close (req->int1); break;
830	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	1118	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
831	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;	1119	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
832	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;	1120	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
833	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;	1121	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
834	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;
835		1125
836	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	1126	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
837	case REQ_FSYNC: req->result = fsync (req->fd); break;	1127	case REQ_FSYNC: req->result = fsync (req->int1); break;
838	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;	1128	case REQ_READDIR: scandir_ (req, self); break;
839		1129
840	case REQ_SLEEP:	1130	case REQ_BUSY:
841	{	1131	{
842	struct timeval tv;	1132	struct timeval tv;
843		1133
844	tv.tv_sec = req->fd;	1134	tv.tv_sec = req->int1;
845	tv.tv_usec = req->fd2;	1135	tv.tv_usec = req->int2;
846		1136
847	req->result = select (0, 0, 0, 0, &tv);	1137	req->result = select (0, 0, 0, 0, &tv);
848	}	1138	}
849		1139
850	case REQ_GROUP:	1140	case REQ_GROUP:
851	case REQ_NOP:	1141	case REQ_NOP:
		1142	break;
		1143
852	case REQ_QUIT:	1144	case REQ_QUIT:
853	break;	1145	goto quit;
854		1146
855	default:	1147	default:
856	req->result = ENOSYS;	1148	req->result = ENOSYS;
857	break;	1149	break;
858	}	1150	}
859		1151
860	req->errorno = errno;	1152	req->errorno = errno;
861		1153
862	pthread_mutex_lock (&reslock);	1154	LOCK (reslock);
863		1155
864	req->next = 0;	1156	++npending;
865		1157
866	if (rese)	1158	if (!reqq_push (&res_queue, req))
867	{
868	rese->next = req;
869	rese = req;
870	}
871	else
872	{
873	rese = ress = req;
874
875	/* write a dummy byte to the pipe so fh becomes ready */	1159	/* write a dummy byte to the pipe so fh becomes ready */
876	write (respipe [1], &respipe, 1);	1160	write (respipe [1], &respipe, 1);
877	}
878		1161
879	pthread_mutex_unlock (&reslock);	1162	self->req = 0;
		1163	worker_clear (self);
		1164
		1165	UNLOCK (reslock);
880	}	1166	}
881	while (type != REQ_QUIT);	1167
		1168	quit:
		1169	LOCK (wrklock);
		1170	worker_free (self);
		1171	UNLOCK (wrklock);
882		1172
883	return 0;	1173	return 0;
884	}	1174	}
885		1175
886	/*****************************************************************************/	1176	/*****************************************************************************/
887		1177
888	static void atfork_prepare (void)	1178	static void atfork_prepare (void)
889	{	1179	{
890	pthread_mutex_lock (&reqlock);	1180	LOCK (wrklock);
891	pthread_mutex_lock (&reslock);	1181	LOCK (reqlock);
		1182	LOCK (reslock);
892	#if !HAVE_PREADWRITE	1183	#if !HAVE_PREADWRITE
893	pthread_mutex_lock (&preadwritelock);	1184	LOCK (preadwritelock);
894	#endif	1185	#endif
895	#if !HAVE_READDIR_R	1186	#if !HAVE_READDIR_R
896	pthread_mutex_lock (&readdirlock);	1187	LOCK (readdirlock);
897	#endif	1188	#endif
898	}	1189	}
899		1190
900	static void atfork_parent (void)	1191	static void atfork_parent (void)
901	{	1192	{
902	#if !HAVE_READDIR_R	1193	#if !HAVE_READDIR_R
903	pthread_mutex_unlock (&readdirlock);	1194	UNLOCK (readdirlock);
904	#endif	1195	#endif
905	#if !HAVE_PREADWRITE	1196	#if !HAVE_PREADWRITE
906	pthread_mutex_unlock (&preadwritelock);	1197	UNLOCK (preadwritelock);
907	#endif	1198	#endif
908	pthread_mutex_unlock (&reslock);	1199	UNLOCK (reslock);
909	pthread_mutex_unlock (&reqlock);	1200	UNLOCK (reqlock);
		1201	UNLOCK (wrklock);
910	}	1202	}
911		1203
912	static void atfork_child (void)	1204	static void atfork_child (void)
913	{	1205	{
914	aio_req prv;	1206	aio_req prv;
915		1207
916	started = 0;	1208	while (prv = reqq_shift (&req_queue))
		1209	req_free (prv);
917		1210
918	while (reqs)	1211	while (prv = reqq_shift (&res_queue))
		1212	req_free (prv);
		1213
		1214	while (wrk_first.next != &wrk_first)
919	{	1215	{
920	prv = reqs;	1216	worker *wrk = wrk_first.next;
921	reqs = prv->next;	1217
		1218	if (wrk->req)
		1219	req_free (wrk->req);
		1220
		1221	worker_clear (wrk);
922	req_free (prv);	1222	worker_free (wrk);
923	}	1223	}
924		1224
925	reqs = reqe = 0;	1225	started = 0;
926		1226	idle = 0;
927	while (ress)	1227	nreqs = 0;
928	{	1228	nready = 0;
929	prv = ress;	1229	npending = 0;
930	ress = prv->next;
931	req_free (prv);
932	}
933
934	ress = rese = 0;
935		1230
936	close (respipe [0]);	1231	close (respipe [0]);
937	close (respipe [1]);	1232	close (respipe [1]);
938	create_pipe ();	1233	create_pipe ();
939		1234
…		…
966	PROTOTYPES: ENABLE	1261	PROTOTYPES: ENABLE
967		1262
968	BOOT:	1263	BOOT:
969	{	1264	{
970	HV *stash = gv_stashpv ("IO::AIO", 1);	1265	HV *stash = gv_stashpv ("IO::AIO", 1);
		1266
971	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	1267	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
972	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	1268	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
973	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));
974		1273
975	create_pipe ();	1274	create_pipe ();
976	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	1275	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
977	}	1276	}
978		1277
979	void	1278	void
980	min_parallel (nthreads)	1279	max_poll_reqs (int nreqs)
981	int nthreads
982	PROTOTYPE: $	1280	PROTOTYPE: $
		1281	CODE:
		1282	max_poll_reqs = nreqs;
983		1283
984	void	1284	void
985	max_parallel (nthreads)	1285	max_poll_time (double nseconds)
986	int nthreads
987	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);
988		1303
989	int	1304	int
990	max_outstanding (nreqs)	1305	max_outstanding (int maxreqs)
991	int nreqs	1306	PROTOTYPE: $
992	PROTOTYPE: $
993	CODE:	1307	CODE:
994	RETVAL = max_outstanding;	1308	RETVAL = max_outstanding;
995	max_outstanding = nreqs;	1309	max_outstanding = maxreqs;
		1310	OUTPUT:
		1311	RETVAL
996		1312
997	void	1313	void
998	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	1314	aio_open (pathname,flags,mode,callback=&PL_sv_undef)
999	SV * pathname	1315	SV8 * pathname
1000	int flags	1316	int flags
1001	int mode	1317	int mode
1002	SV * callback	1318	SV * callback
1003	PROTOTYPE: $$$;$	1319	PROTOTYPE: $$$;$
1004	PPCODE:	1320	PPCODE:
1005	{	1321	{
1006	dREQ;	1322	dREQ;
1007		1323
1008	req->type = REQ_OPEN;	1324	req->type = REQ_OPEN;
1009	req->data = newSVsv (pathname);	1325	req->sv1 = newSVsv (pathname);
1010	req->dataptr = SvPVbyte_nolen (req->data);	1326	req->ptr1 = SvPVbyte_nolen (req->sv1);
1011	req->fd = flags;	1327	req->int1 = flags;
1012	req->mode = mode;	1328	req->mode = mode;
1013		1329
1014	REQ_SEND;	1330	REQ_SEND;
1015	}	1331	}
1016		1332
…		…
1026	PPCODE:	1342	PPCODE:
1027	{	1343	{
1028	dREQ;	1344	dREQ;
1029		1345
1030	req->type = ix;	1346	req->type = ix;
1031	req->fh = newSVsv (fh);	1347	req->fh = newSVsv (fh);
1032	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1348	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1033		1349
1034	REQ_SEND (req);	1350	REQ_SEND (req);
1035	}	1351	}
1036		1352
1037	void	1353	void
1038	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1354	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
1039	SV * fh	1355	SV * fh
1040	UV offset	1356	UV offset
1041	UV length	1357	UV length
1042	SV * data	1358	SV8 * data
1043	UV dataoffset	1359	UV dataoffset
1044	SV * callback	1360	SV * callback
1045	ALIAS:	1361	ALIAS:
1046	aio_read = REQ_READ	1362	aio_read = REQ_READ
1047	aio_write = REQ_WRITE	1363	aio_write = REQ_WRITE
1048	PROTOTYPE: $$$$$;$	1364	PROTOTYPE: $$$$$;$
1049	PPCODE:	1365	PPCODE:
1050	{	1366	{
1051	aio_req req;
1052	STRLEN svlen;	1367	STRLEN svlen;
1053	char *svptr = SvPVbyte (data, svlen);	1368	char *svptr = SvPVbyte (data, svlen);
1054		1369
1055	SvUPGRADE (data, SVt_PV);	1370	SvUPGRADE (data, SVt_PV);
1056	SvPOK_on (data);	1371	SvPOK_on (data);
…		…
1078		1393
1079	{	1394	{
1080	dREQ;	1395	dREQ;
1081		1396
1082	req->type = ix;	1397	req->type = ix;
1083	req->fh = newSVsv (fh);	1398	req->fh = newSVsv (fh);
1084	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1399	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
1085	: IoOFP (sv_2io (fh)));	1400	: IoOFP (sv_2io (fh)));
1086	req->offset = offset;	1401	req->offs = offset;
1087	req->length = length;	1402	req->size = length;
1088	req->data = SvREFCNT_inc (data);	1403	req->sv1 = SvREFCNT_inc (data);
1089	req->dataptr = (char *)svptr + dataoffset;	1404	req->ptr1 = (char *)svptr + dataoffset;
		1405	req->stroffset = dataoffset;
1090		1406
1091	if (!SvREADONLY (data))	1407	if (!SvREADONLY (data))
1092	{	1408	{
1093	SvREADONLY_on (data);	1409	SvREADONLY_on (data);
1094	req->data2ptr = (void *)data;	1410	req->flags |= FLAG_SV1_RO_OFF;
1095	}	1411	}
1096		1412
1097	REQ_SEND;	1413	REQ_SEND;
1098	}	1414	}
		1415	}
		1416
		1417	void
		1418	aio_readlink (path,callback=&PL_sv_undef)
		1419	SV8 * path
		1420	SV * callback
		1421	PROTOTYPE: $$;$
		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;
1099	}	1437	}
1100		1438
1101	void	1439	void
1102	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)
1103	SV * out_fh	1441	SV * out_fh
…		…
1109	PPCODE:	1447	PPCODE:
1110	{	1448	{
1111	dREQ;	1449	dREQ;
1112		1450
1113	req->type = REQ_SENDFILE;	1451	req->type = REQ_SENDFILE;
1114	req->fh = newSVsv (out_fh);	1452	req->fh = newSVsv (out_fh);
1115	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1453	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1116	req->fh2 = newSVsv (in_fh);	1454	req->sv2 = newSVsv (in_fh);
1117	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1455	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1118	req->offset = in_offset;	1456	req->offs = in_offset;
1119	req->length = length;	1457	req->size = length;
1120		1458
1121	REQ_SEND;	1459	REQ_SEND;
1122	}	1460	}
1123		1461
1124	void	1462	void
…		…
1131	PPCODE:	1469	PPCODE:
1132	{	1470	{
1133	dREQ;	1471	dREQ;
1134		1472
1135	req->type = REQ_READAHEAD;	1473	req->type = REQ_READAHEAD;
1136	req->fh = newSVsv (fh);	1474	req->fh = newSVsv (fh);
1137	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1475	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1138	req->offset = offset;	1476	req->offs = offset;
1139	req->length = length;	1477	req->size = length;
1140		1478
1141	REQ_SEND;	1479	REQ_SEND;
1142	}	1480	}
1143		1481
1144	void	1482	void
1145	aio_stat (fh_or_path,callback=&PL_sv_undef)	1483	aio_stat (fh_or_path,callback=&PL_sv_undef)
1146	SV * fh_or_path	1484	SV8 * fh_or_path
1147	SV * callback	1485	SV * callback
1148	ALIAS:	1486	ALIAS:
1149	aio_stat = REQ_STAT	1487	aio_stat = REQ_STAT
1150	aio_lstat = REQ_LSTAT	1488	aio_lstat = REQ_LSTAT
1151	PPCODE:	1489	PPCODE:
1152	{	1490	{
1153	dREQ;	1491	dREQ;
1154		1492
1155	New (0, req->statdata, 1, Stat_t);	1493	req->ptr2 = malloc (sizeof (Stat_t));
1156	if (!req->statdata)	1494	if (!req->ptr2)
1157	{	1495	{
1158	req_free (req);	1496	req_free (req);
1159	croak ("out of memory during aio_req->statdata allocation");	1497	croak ("out of memory during aio_stat statdata allocation");
1160	}	1498	}
		1499
		1500	req->flags |= FLAG_PTR2_FREE;
1161		1501
1162	if (SvPOK (fh_or_path))	1502	if (SvPOK (fh_or_path))
1163	{	1503	{
1164	req->type = ix;	1504	req->type = ix;
1165	req->data = newSVsv (fh_or_path);	1505	req->sv1 = newSVsv (fh_or_path);
1166	req->dataptr = SvPVbyte_nolen (req->data);	1506	req->ptr1 = SvPVbyte_nolen (req->sv1);
1167	}	1507	}
1168	else	1508	else
1169	{	1509	{
1170	req->type = REQ_FSTAT;	1510	req->type = REQ_FSTAT;
1171	req->fh = newSVsv (fh_or_path);	1511	req->fh = newSVsv (fh_or_path);
1172	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1512	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1173	}	1513	}
1174		1514
1175	REQ_SEND;	1515	REQ_SEND;
1176	}	1516	}
1177		1517
1178	void	1518	void
1179	aio_unlink (pathname,callback=&PL_sv_undef)	1519	aio_unlink (pathname,callback=&PL_sv_undef)
1180	SV * pathname	1520	SV8 * pathname
1181	SV * callback	1521	SV * callback
1182	ALIAS:	1522	ALIAS:
1183	aio_unlink = REQ_UNLINK	1523	aio_unlink = REQ_UNLINK
1184	aio_rmdir = REQ_RMDIR	1524	aio_rmdir = REQ_RMDIR
1185	aio_readdir = REQ_READDIR	1525	aio_readdir = REQ_READDIR
1186	PPCODE:	1526	PPCODE:
1187	{	1527	{
1188	dREQ;	1528	dREQ;
1189		1529
1190	req->type = ix;	1530	req->type = ix;
1191	req->data = newSVsv (pathname);	1531	req->sv1 = newSVsv (pathname);
1192	req->dataptr = SvPVbyte_nolen (req->data);	1532	req->ptr1 = SvPVbyte_nolen (req->sv1);
1193		1533
1194	REQ_SEND;	1534	REQ_SEND;
1195	}	1535	}
1196		1536
1197	void	1537	void
1198	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1538	aio_link (oldpath,newpath,callback=&PL_sv_undef)
1199	SV * oldpath	1539	SV8 * oldpath
1200	SV * newpath	1540	SV8 * newpath
1201	SV * callback	1541	SV * callback
1202	ALIAS:	1542	ALIAS:
1203	aio_link = REQ_LINK	1543	aio_link = REQ_LINK
1204	aio_symlink = REQ_SYMLINK	1544	aio_symlink = REQ_SYMLINK
1205	aio_rename = REQ_RENAME	1545	aio_rename = REQ_RENAME
1206	PPCODE:	1546	PPCODE:
1207	{	1547	{
1208	dREQ;	1548	dREQ;
1209		1549
1210	req->type = ix;	1550	req->type = ix;
1211	req->fh = newSVsv (oldpath);	1551	req->fh = newSVsv (oldpath);
1212	req->data2ptr = SvPVbyte_nolen (req->fh);	1552	req->ptr2 = SvPVbyte_nolen (req->fh);
1213	req->data = newSVsv (newpath);	1553	req->sv1 = newSVsv (newpath);
1214	req->dataptr = SvPVbyte_nolen (req->data);	1554	req->ptr1 = SvPVbyte_nolen (req->sv1);
1215		1555
1216	REQ_SEND;	1556	REQ_SEND;
1217	}	1557	}
1218		1558
1219	void	1559	void
1220	aio_sleep (delay,callback=&PL_sv_undef)	1560	aio_mknod (pathname,mode,dev,callback=&PL_sv_undef)
1221	double delay	1561	SV8 * pathname
1222	SV * callback	1562	SV * callback
		1563	UV mode
		1564	UV dev
1223	PPCODE:	1565	PPCODE:
1224	{	1566	{
1225	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	}
1226		1577
		1578	void
		1579	aio_busy (delay,callback=&PL_sv_undef)
		1580	double delay
		1581	SV * callback
		1582	PPCODE:
		1583	{
		1584	dREQ;
		1585
1227	req->type = REQ_SLEEP;	1586	req->type = REQ_BUSY;
1228	req->fd = delay < 0. ? 0 : delay;	1587	req->int1 = delay < 0. ? 0 : delay;
1229	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1588	req->int2 = delay < 0. ? 0 : 1000. * (delay - req->int1);
1230		1589
1231	REQ_SEND;	1590	REQ_SEND;
1232	}	1591	}
1233		1592
1234	void	1593	void
…		…
1238	PPCODE:	1597	PPCODE:
1239	{	1598	{
1240	dREQ;	1599	dREQ;
1241		1600
1242	req->type = REQ_GROUP;	1601	req->type = REQ_GROUP;
		1602
1243	req_send (req);	1603	req_send (req);
1244
1245	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1604	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1246	}	1605	}
1247		1606
1248	void	1607	void
1249	aio_nop (callback=&PL_sv_undef)	1608	aio_nop (callback=&PL_sv_undef)
1250	SV * callback	1609	SV * callback
1251	PPCODE:	1610	PPCODE:
1252	{	1611	{
1253	dREQ;	1612	dREQ;
1254		1613
1255	req->type = REQ_NOP;	1614	req->type = REQ_NOP;
1256		1615
1257	REQ_SEND;	1616	REQ_SEND;
1258	}	1617	}
1259		1618
1260	#if 0	1619	int
1261		1620	aioreq_pri (int pri = 0)
1262	void	1621	PROTOTYPE: ;$
1263	aio_pri (int pri = DEFAULT_PRI)
1264	CODE:	1622	CODE:
		1623	RETVAL = next_pri - PRI_BIAS;
		1624	if (items > 0)
		1625	{
1265	if (pri < PRI_MIN) pri = PRI_MIN;	1626	if (pri < PRI_MIN) pri = PRI_MIN;
1266	if (pri > PRI_MAX) pri = PRI_MAX;	1627	if (pri > PRI_MAX) pri = PRI_MAX;
1267	next_pri = pri + PRI_BIAS;	1628	next_pri = pri + PRI_BIAS;
		1629	}
		1630	OUTPUT:
		1631	RETVAL
1268		1632
1269	#endif	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;
1270		1640
1271	void	1641	void
1272	flush ()	1642	flush ()
1273	PROTOTYPE:	1643	PROTOTYPE:
1274	CODE:	1644	CODE:
…		…
1276	{	1646	{
1277	poll_wait ();	1647	poll_wait ();
1278	poll_cb ();	1648	poll_cb ();
1279	}	1649	}
1280		1650
1281	void	1651	int
1282	poll()	1652	poll()
1283	PROTOTYPE:	1653	PROTOTYPE:
1284	CODE:	1654	CODE:
1285	if (nreqs)
1286	{
1287	poll_wait ();	1655	poll_wait ();
1288	poll_cb ();	1656	RETVAL = poll_cb ();
1289	}	1657	OUTPUT:
		1658	RETVAL
1290		1659
1291	int	1660	int
1292	poll_fileno()	1661	poll_fileno()
1293	PROTOTYPE:	1662	PROTOTYPE:
1294	CODE:	1663	CODE:
…		…
1306		1675
1307	void	1676	void
1308	poll_wait()	1677	poll_wait()
1309	PROTOTYPE:	1678	PROTOTYPE:
1310	CODE:	1679	CODE:
1311	if (nreqs)
1312	poll_wait ();	1680	poll_wait ();
1313		1681
1314	int	1682	int
1315	nreqs()	1683	nreqs()
1316	PROTOTYPE:	1684	PROTOTYPE:
1317	CODE:	1685	CODE:
1318	RETVAL = nreqs;	1686	RETVAL = nreqs;
1319	OUTPUT:	1687	OUTPUT:
1320	RETVAL	1688	RETVAL
1321		1689
		1690	int
		1691	nready()
		1692	PROTOTYPE:
		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
1322	PROTOTYPES: DISABLE	1716	PROTOTYPES: DISABLE
1323		1717
1324	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1718	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1325		1719
1326	void	1720	void
1327	cancel (aio_req_ornot req)	1721	cancel (aio_req_ornot req)
1328	PROTOTYPE:
1329	CODE:	1722	CODE:
1330	req_cancel (req);	1723	req_cancel (req);
1331		1724
1332	void	1725	void
1333	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1726	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
…		…
1342	PPCODE:	1735	PPCODE:
1343	{	1736	{
1344	int i;	1737	int i;
1345	aio_req req;	1738	aio_req req;
1346		1739
1347	if (grp->fd == 2)	1740	if (grp->int1 == 2)
1348	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");
1349		1742
1350	for (i = 1; i < items; ++i )	1743	for (i = 1; i < items; ++i )
1351	{	1744	{
1352	if (GIMME_V != G_VOID)	1745	if (GIMME_V != G_VOID)
…		…
1354		1747
1355	req = SvAIO_REQ (ST (i));	1748	req = SvAIO_REQ (ST (i));
1356		1749
1357	if (req)	1750	if (req)
1358	{	1751	{
1359	++grp->length;	1752	++grp->size;
1360	req->grp = grp;	1753	req->grp = grp;
1361		1754
1362	req->grp_prev = 0;	1755	req->grp_prev = 0;
1363	req->grp_next = grp->grp_first;	1756	req->grp_next = grp->grp_first;
1364		1757
…		…
1369	}	1762	}
1370	}	1763	}
1371	}	1764	}
1372		1765
1373	void	1766	void
		1767	cancel_subs (aio_req_ornot req)
		1768	CODE:
		1769	req_cancel_subs (req);
		1770
		1771	void
1374	result (aio_req grp, ...)	1772	result (aio_req grp, ...)
1375	CODE:	1773	CODE:
1376	{	1774	{
1377	int i;	1775	int i;
		1776	AV *av;
		1777
		1778	grp->errorno = errno;
		1779
1378	AV *av = newAV ();	1780	av = newAV ();
1379		1781
1380	for (i = 1; i < items; ++i )	1782	for (i = 1; i < items; ++i )
1381	av_push (av, newSVsv (ST (i)));	1783	av_push (av, newSVsv (ST (i)));
1382		1784
1383	SvREFCNT_dec (grp->data);	1785	SvREFCNT_dec (grp->sv1);
1384	grp->data = (SV *)av;	1786	grp->sv1 = (SV *)av;
1385	}	1787	}
1386		1788
1387	void	1789	void
		1790	errno (aio_req grp, int errorno = errno)
		1791	CODE:
		1792	grp->errorno = errorno;
		1793
		1794	void
1388	feed_limit (aio_req grp, int limit)	1795	limit (aio_req grp, int limit)
1389	CODE:	1796	CODE:
1390	grp->fd2 = limit;	1797	grp->int2 = limit;
1391	aio_grp_feed (grp);	1798	aio_grp_feed (grp);
1392		1799
1393	void	1800	void
1394	feed (aio_req grp, SV *callback=&PL_sv_undef)	1801	feed (aio_req grp, SV *callback=&PL_sv_undef)
1395	CODE:	1802	CODE:
1396	{	1803	{
1397	SvREFCNT_dec (grp->fh2);	1804	SvREFCNT_dec (grp->sv2);
1398	grp->fh2 = newSVsv (callback);	1805	grp->sv2 = newSVsv (callback);
1399		1806
1400	if (grp->fd2 <= 0)	1807	if (grp->int2 <= 0)
1401	grp->fd2 = 2;	1808	grp->int2 = 2;
1402		1809
1403	aio_grp_feed (grp);	1810	aio_grp_feed (grp);
1404	}	1811	}
1405		1812

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