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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.64 by root, Mon Oct 23 23:54:41 2006 UTC vs.
Revision 1.92 by root, Wed Nov 8 01:59:59 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;
		91
		92	typedef SV SV8; /* byte-sv, used for argument-checking */
54		93
55	enum {	94	enum {
56	REQ_QUIT,	95	REQ_QUIT,
57	REQ_OPEN, REQ_CLOSE,	96	REQ_OPEN, REQ_CLOSE,
58	REQ_READ, REQ_WRITE, REQ_READAHEAD,	97	REQ_READ, REQ_WRITE, REQ_READAHEAD,
59	REQ_SENDFILE,	98	REQ_SENDFILE,
60	REQ_STAT, REQ_LSTAT, REQ_FSTAT,	99	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
61	REQ_FSYNC, REQ_FDATASYNC,	100	REQ_FSYNC, REQ_FDATASYNC,
62	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,	101	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
63	REQ_READDIR,	102	REQ_MKNOD, REQ_READDIR,
64	REQ_LINK, REQ_SYMLINK,	103	REQ_LINK, REQ_SYMLINK, REQ_READLINK,
65	REQ_GROUP, REQ_NOP,	104	REQ_GROUP, REQ_NOP,
66	REQ_SLEEP,	105	REQ_BUSY,
67	};	106	};
68		107
69	#define AIO_REQ_KLASS "IO::AIO::REQ"	108	#define AIO_REQ_KLASS "IO::AIO::REQ"
70	#define AIO_GRP_KLASS "IO::AIO::GRP"	109	#define AIO_GRP_KLASS "IO::AIO::GRP"
71		110
72	typedef struct aio_cb	111	typedef struct aio_cb
73	{	112	{
74	struct aio_cb *volatile next;	113	struct aio_cb *volatile next;
75		114
76	SV *data, *callback;	115	SV *callback, *fh;
77	SV *fh, *fh2;	116	SV *sv1, *sv2;
78	void *dataptr, *data2ptr;	117	void *ptr1, *ptr2;
79	Stat_t *statdata;
80	off_t offset;	118	off_t offs;
81	size_t length;	119	size_t size;
82	ssize_t result;	120	ssize_t result;
83		121
84	STRLEN dataoffset;	122	STRLEN stroffset;
85	int type;	123	int type;
86	int fd, fd2;	124	int int1, int2;
87	int errorno;	125	int errorno;
88	mode_t mode; /* open */	126	mode_t mode; /* open */
89		127
90	unsigned char flags;	128	unsigned char flags;
91	unsigned char pri;	129	unsigned char pri;
…		…
93	SV *self; /* the perl counterpart of this request, if any */	131	SV *self; /* the perl counterpart of this request, if any */
94	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;	132	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
95	} aio_cb;	133	} aio_cb;
96		134
97	enum {	135	enum {
98	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) */
99	};	139	};
100		140
101	typedef aio_cb *aio_req;	141	typedef aio_cb *aio_req;
102	typedef aio_cb *aio_req_ornot;	142	typedef aio_cb *aio_req_ornot;
103		143
…		…
105	PRI_MIN = -4,	145	PRI_MIN = -4,
106	PRI_MAX = 4,	146	PRI_MAX = 4,
107		147
108	DEFAULT_PRI = 0,	148	DEFAULT_PRI = 0,
109	PRI_BIAS = -PRI_MIN,	149	PRI_BIAS = -PRI_MIN,
		150	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
110	};	151	};
111		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
112	static int next_pri = DEFAULT_PRI + PRI_BIAS;	165	static int next_pri = DEFAULT_PRI + PRI_BIAS;
113		166
114	static int started, wanted;	167	static unsigned int started, idle, wanted;
115	static volatile int nreqs;
116	static int max_outstanding = 1<<30;
117	static int respipe [2];
118		168
119	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)	169	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
120	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP	170	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
121	#else	171	#else
122	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER	172	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
123	#endif	173	#endif
124		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;
		221	static int respipe [2];
		222
125	static pthread_mutex_t reslock = AIO_MUTEX_INIT;	223	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
126	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;	224	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
127	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	225	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
128		226
129	static volatile aio_req reqs, reqe; /* queue start, queue end */	227	#if WORDACCESS_UNSAFE
130	static volatile aio_req ress, rese; /* queue start, queue end */
131		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 ();
132	static void req_invoke (aio_req req);	325	static void req_invoke (aio_req req);
133	static void req_free (aio_req req);	326	static void req_free (aio_req req);
		327	static void req_cancel (aio_req req);
134		328
135	/* must be called at most once */	329	/* must be called at most once */
136	static SV *req_sv (aio_req req, const char *klass)	330	static SV *req_sv (aio_req req, const char *klass)
137	{	331	{
138	if (!req->self)	332	if (!req->self)
…		…
156	return mg ? (aio_req)mg->mg_ptr : 0;	350	return mg ? (aio_req)mg->mg_ptr : 0;
157	}	351	}
158		352
159	static void aio_grp_feed (aio_req grp)	353	static void aio_grp_feed (aio_req grp)
160	{	354	{
161	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	355	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
162	{	356	{
163	int old_len = grp->length;	357	int old_len = grp->size;
164		358
165	if (grp->fh2 && SvOK (grp->fh2))	359	if (grp->sv2 && SvOK (grp->sv2))
166	{	360	{
167	dSP;	361	dSP;
168		362
169	ENTER;	363	ENTER;
170	SAVETMPS;	364	SAVETMPS;
171	PUSHMARK (SP);	365	PUSHMARK (SP);
172	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	366	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
173	PUTBACK;	367	PUTBACK;
174	call_sv (grp->fh2, G_VOID | G_EVAL);	368	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
175	SPAGAIN;	369	SPAGAIN;
176	FREETMPS;	370	FREETMPS;
177	LEAVE;	371	LEAVE;
178	}	372	}
179		373
180	/* stop if no progress has been made */	374	/* stop if no progress has been made */
181	if (old_len == grp->length)	375	if (old_len == grp->size)
182	{	376	{
183	SvREFCNT_dec (grp->fh2);	377	SvREFCNT_dec (grp->sv2);
184	grp->fh2 = 0;	378	grp->sv2 = 0;
185	break;	379	break;
186	}	380	}
187	}	381	}
188	}	382	}
189		383
190	static void aio_grp_dec (aio_req grp)	384	static void aio_grp_dec (aio_req grp)
191	{	385	{
192	--grp->length;	386	--grp->size;
193		387
194	/* call feeder, if applicable */	388	/* call feeder, if applicable */
195	aio_grp_feed (grp);	389	aio_grp_feed (grp);
196		390
197	/* finish, if done */	391	/* finish, if done */
198	if (!grp->length && grp->fd)	392	if (!grp->size && grp->int1)
199	{	393	{
200	req_invoke (grp);	394	req_invoke (grp);
201	req_free (grp);	395	req_free (grp);
202	}	396	}
203	}	397	}
204		398
205	static void poll_wait ()	399	static void req_invoke (aio_req req)
206	{	400	{
207	fd_set rfd;	401	dSP;
208		402
209	while (nreqs)	403	if (req->flags & FLAG_SV1_RO_OFF)
		404	SvREADONLY_off (req->sv1);
		405
		406	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
210	{	407	{
211	aio_req req;	408	ENTER;
212	#if !(__x86 || __x86_64) /* safe without sempahore on this archs */	409	SAVETMPS;
213	pthread_mutex_lock (&reslock);	410	PUSHMARK (SP);
214	#endif	411	EXTEND (SP, 1);
215	req = ress;
216	#if !(__x86 || __x86_64) /* safe without sempahore on this archs */
217	pthread_mutex_unlock (&reslock);
218	#endif
219		412
220	if (req)	413	switch (req->type)
221	return;	414	{
		415	case REQ_READDIR:
		416	{
		417	SV *rv = &PL_sv_undef;
222		418
223	FD_ZERO(&rfd);	419	if (req->result >= 0)
224	FD_SET(respipe [0], &rfd);	420	{
		421	int i;
		422	char *buf = req->ptr2;
		423	AV *av = newAV ();
225		424
226	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 = SvREFCNT_inc (POPs);
		453
		454	PUSHMARK (SP);
		455	XPUSHs (sv_2mortal (fh));
		456	}
		457	break;
		458
		459	case REQ_GROUP:
		460	req->int1 = 2; /* mark group as finished */
		461
		462	if (req->sv1)
		463	{
		464	int i;
		465	AV *av = (AV *)req->sv1;
		466
		467	EXTEND (SP, AvFILL (av) + 1);
		468	for (i = 0; i <= AvFILL (av); ++i)
		469	PUSHs (*av_fetch (av, i, 0));
		470	}
		471	break;
		472
		473	case REQ_NOP:
		474	case REQ_BUSY:
		475	break;
		476
		477	case REQ_READLINK:
		478	if (req->result > 0)
		479	{
		480	SvCUR_set (req->sv1, req->result);
		481	*SvEND (req->sv1) = 0;
		482	PUSHs (req->sv1);
		483	}
		484	break;
		485
		486	case REQ_STAT:
		487	case REQ_LSTAT:
		488	case REQ_FSTAT:
		489	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
		490	PL_laststatval = req->result;
		491	PL_statcache = *(Stat_t *)(req->ptr2);
		492	PUSHs (sv_2mortal (newSViv (req->result)));
		493	break;
		494
		495	case REQ_READ:
		496	SvCUR_set (req->sv1, req->stroffset + (req->result > 0 ? req->result : 0));
		497	*SvEND (req->sv1) = 0;
		498	PUSHs (sv_2mortal (newSViv (req->result)));
		499	break;
		500
		501	default:
		502	PUSHs (sv_2mortal (newSViv (req->result)));
		503	break;
		504	}
		505
		506	errno = req->errorno;
		507
		508	PUTBACK;
		509	call_sv (req->callback, G_VOID | G_EVAL);
		510	SPAGAIN;
		511
		512	FREETMPS;
		513	LEAVE;
227	}	514	}
228	}
229		515
230	static void req_invoke (aio_req req)	516	if (req->grp)
231	{
232	dSP;
233	int errorno = errno;
234
235	if (req->flags & FLAG_CANCELLED || !SvOK (req->callback))
236	return;
237
238	errno = req->errorno;
239
240	ENTER;
241	SAVETMPS;
242	PUSHMARK (SP);
243	EXTEND (SP, 1);
244
245	switch (req->type)
246	{	517	{
247	case REQ_READDIR:	518	aio_req grp = req->grp;
248	{
249	SV *rv = &PL_sv_undef;
250		519
251	if (req->result >= 0)	520	/* unlink request */
252	{	521	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
253	char *buf = req->data2ptr;	522	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
254	AV *av = newAV ();
255		523
256	while (req->result)	524	if (grp->grp_first == req)
257	{	525	grp->grp_first = req->grp_next;
258	SV *sv = newSVpv (buf, 0);
259		526
260	av_push (av, sv);	527	aio_grp_dec (grp);
261	buf += SvCUR (sv) + 1;
262	req->result--;
263	}
264
265	rv = sv_2mortal (newRV_noinc ((SV *)av));
266	}
267
268	PUSHs (rv);
269	}
270	break;
271
272	case REQ_OPEN:
273	{
274	/* convert fd to fh */
275	SV *fh;
276
277	PUSHs (sv_2mortal (newSViv (req->result)));
278	PUTBACK;
279	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
280	SPAGAIN;
281
282	fh = SvREFCNT_inc (POPs);
283
284	PUSHMARK (SP);
285	XPUSHs (sv_2mortal (fh));
286	}
287	break;
288
289	case REQ_GROUP:
290	req->fd = 2; /* mark group as finished */
291
292	if (req->data)
293	{
294	int i;
295	AV *av = (AV *)req->data;
296
297	EXTEND (SP, AvFILL (av) + 1);
298	for (i = 0; i <= AvFILL (av); ++i)
299	PUSHs (*av_fetch (av, i, 0));
300	}
301	break;
302
303	case REQ_NOP:
304	case REQ_SLEEP:
305	break;
306
307	default:
308	PUSHs (sv_2mortal (newSViv (req->result)));
309	break;
310	}	528	}
311
312
313	PUTBACK;
314	call_sv (req->callback, G_VOID | G_EVAL);
315	SPAGAIN;
316
317	FREETMPS;
318	LEAVE;
319
320	errno = errorno;
321		529
322	if (SvTRUE (ERRSV))	530	if (SvTRUE (ERRSV))
323	{	531	{
324	req_free (req);	532	req_free (req);
325	croak (0);	533	croak (0);
326	}	534	}
327	}	535	}
328		536
329	static void req_free (aio_req req)	537	static void req_free (aio_req req)
330	{	538	{
331	if (req->grp)
332	{
333	aio_req grp = req->grp;
334
335	/* unlink request */
336	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
337	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
338
339	if (grp->grp_first == req)
340	grp->grp_first = req->grp_next;
341
342	aio_grp_dec (grp);
343	}
344
345	if (req->self)	539	if (req->self)
346	{	540	{
347	sv_unmagic (req->self, PERL_MAGIC_ext);	541	sv_unmagic (req->self, PERL_MAGIC_ext);
348	SvREFCNT_dec (req->self);	542	SvREFCNT_dec (req->self);
349	}	543	}
350		544
351	SvREFCNT_dec (req->data);
352	SvREFCNT_dec (req->fh);	545	SvREFCNT_dec (req->fh);
		546	SvREFCNT_dec (req->sv1);
353	SvREFCNT_dec (req->fh2);	547	SvREFCNT_dec (req->sv2);
354	SvREFCNT_dec (req->callback);	548	SvREFCNT_dec (req->callback);
355	Safefree (req->statdata);
356		549
357	if (req->type == REQ_READDIR && req->result >= 0)	550	if (req->flags & FLAG_PTR2_FREE)
358	free (req->data2ptr);	551	free (req->ptr2);
359		552
360	Safefree (req);	553	Safefree (req);
361	}	554	}
362		555
		556	static void req_cancel_subs (aio_req grp)
		557	{
		558	aio_req sub;
		559
		560	if (grp->type != REQ_GROUP)
		561	return;
		562
		563	SvREFCNT_dec (grp->sv2);
		564	grp->sv2 = 0;
		565
		566	for (sub = grp->grp_first; sub; sub = sub->grp_next)
		567	req_cancel (sub);
		568	}
		569
363	static void req_cancel (aio_req req)	570	static void req_cancel (aio_req req)
364	{	571	{
365	req->flags |= FLAG_CANCELLED;	572	req->flags |= FLAG_CANCELLED;
366		573
367	if (req->type == REQ_GROUP)	574	req_cancel_subs (req);
368	{
369	aio_req sub;
370
371	for (sub = req->grp_first; sub; sub = sub->grp_next)
372	req_cancel (sub);
373	}
374	}
375
376	static int poll_cb ()
377	{
378	dSP;
379	int count = 0;
380	int do_croak = 0;
381	aio_req req;
382
383	for (;;)
384	{
385	pthread_mutex_lock (&reslock);
386	req = ress;
387
388	if (req)
389	{
390	ress = req->next;
391
392	if (!ress)
393	{
394	/* read any signals sent by the worker threads */
395	char buf [32];
396	while (read (respipe [0], buf, 32) == 32)
397	;
398
399	rese = 0;
400	}
401	}
402
403	pthread_mutex_unlock (&reslock);
404
405	if (!req)
406	break;
407
408	--nreqs;
409
410	if (req->type == REQ_QUIT)
411	started--;
412	else if (req->type == REQ_GROUP && req->length)
413	{
414	req->fd = 1; /* mark request as delayed */
415	continue;
416	}
417	else
418	{
419	if (req->type == REQ_READ)
420	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
421
422	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
423	SvREADONLY_off (req->data);
424
425	if (req->statdata)
426	{
427	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
428	PL_laststatval = req->result;
429	PL_statcache = *(req->statdata);
430	}
431
432	req_invoke (req);
433
434	count++;
435	}
436
437	req_free (req);
438	}
439
440	return count;
441	}	575	}
442		576
443	static void *aio_proc(void *arg);	577	static void *aio_proc(void *arg);
444		578
445	static void start_thread (void)	579	static void start_thread (void)
446	{	580	{
447	sigset_t fullsigset, oldsigset;	581	sigset_t fullsigset, oldsigset;
448	pthread_t tid;
449	pthread_attr_t attr;	582	pthread_attr_t attr;
		583
		584	worker *wrk = calloc (1, sizeof (worker));
		585
		586	if (!wrk)
		587	croak ("unable to allocate worker thread data");
450		588
451	pthread_attr_init (&attr);	589	pthread_attr_init (&attr);
452	pthread_attr_setstacksize (&attr, STACKSIZE);	590	pthread_attr_setstacksize (&attr, STACKSIZE);
453	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);	591	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
		592	#ifdef PTHREAD_SCOPE_PROCESS
		593	pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS);
		594	#endif
454		595
455	sigfillset (&fullsigset);	596	sigfillset (&fullsigset);
		597
		598	LOCK (wrklock);
456	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);	599	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
457		600
458	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)	601	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
459	started++;
460
461	sigprocmask (SIG_SETMASK, &oldsigset, 0);
462	}
463
464	static void req_send (aio_req req)
465	{
466	while (started < wanted && nreqs >= started)
467	start_thread ();
468
469	++nreqs;
470
471	pthread_mutex_lock (&reqlock);
472
473	req->next = 0;
474
475	if (reqe)
476	{	602	{
477	reqe->next = req;	603	wrk->prev = &wrk_first;
478	reqe = req;	604	wrk->next = wrk_first.next;
		605	wrk_first.next->prev = wrk;
		606	wrk_first.next = wrk;
		607	++started;
479	}	608	}
480	else	609	else
481	reqe = reqs = req;	610	free (wrk);
482		611
		612	sigprocmask (SIG_SETMASK, &oldsigset, 0);
		613	UNLOCK (wrklock);
		614	}
		615
		616	static void maybe_start_thread ()
		617	{
		618	if (get_nthreads () >= wanted)
		619	return;
		620
		621	/* todo: maybe use idle here, but might be less exact */
		622	if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
		623	return;
		624
		625	start_thread ();
		626	}
		627
		628	static void req_send (aio_req req)
		629	{
		630	++nreqs;
		631
		632	LOCK (reqlock);
		633	++nready;
		634	reqq_push (&req_queue, req);
483	pthread_cond_signal (&reqwait);	635	pthread_cond_signal (&reqwait);
484	pthread_mutex_unlock (&reqlock);	636	UNLOCK (reqlock);
485		637
486	if (nreqs > max_outstanding)	638	maybe_start_thread ();
487	for (;;)
488	{
489	poll_cb ();
490
491	if (nreqs <= max_outstanding)
492	break;
493
494	poll_wait ();
495	}
496	}	639	}
497		640
498	static void end_thread (void)	641	static void end_thread (void)
499	{	642	{
500	aio_req req;	643	aio_req req;
		644
501	Newz (0, req, 1, aio_cb);	645	Newz (0, req, 1, aio_cb);
		646
502	req->type = REQ_QUIT;	647	req->type = REQ_QUIT;
		648	req->pri = PRI_MAX + PRI_BIAS;
503		649
504	req_send (req);	650	LOCK (reqlock);
		651	reqq_push (&req_queue, req);
		652	pthread_cond_signal (&reqwait);
		653	UNLOCK (reqlock);
		654
		655	LOCK (wrklock);
		656	--started;
		657	UNLOCK (wrklock);
		658	}
		659
		660	static void set_max_idle (int nthreads)
		661	{
		662	if (WORDACCESS_UNSAFE) LOCK (reqlock);
		663	max_idle = nthreads <= 0 ? 1 : nthreads;
		664	if (WORDACCESS_UNSAFE) UNLOCK (reqlock);
505	}	665	}
506		666
507	static void min_parallel (int nthreads)	667	static void min_parallel (int nthreads)
508	{	668	{
509	if (wanted < nthreads)	669	if (wanted < nthreads)
510	wanted = nthreads;	670	wanted = nthreads;
511	}	671	}
512		672
513	static void max_parallel (int nthreads)	673	static void max_parallel (int nthreads)
514	{	674	{
515	int cur = started;
516
517	if (wanted > nthreads)	675	if (wanted > nthreads)
518	wanted = nthreads;	676	wanted = nthreads;
519		677
520	while (cur > wanted)	678	while (started > wanted)
		679	end_thread ();
		680	}
		681
		682	static void poll_wait ()
		683	{
		684	fd_set rfd;
		685
		686	while (nreqs)
521	{	687	{
		688	int size;
		689	if (WORDACCESS_UNSAFE) LOCK (reslock);
		690	size = res_queue.size;
		691	if (WORDACCESS_UNSAFE) UNLOCK (reslock);
		692
		693	if (size)
		694	return;
		695
522	end_thread ();	696	maybe_start_thread ();
523	cur--;	697
		698	FD_ZERO(&rfd);
		699	FD_SET(respipe [0], &rfd);
		700
		701	select (respipe [0] + 1, &rfd, 0, 0, 0);
524	}	702	}
		703	}
525		704
526	while (started > wanted)	705	static int poll_cb ()
		706	{
		707	dSP;
		708	int count = 0;
		709	int maxreqs = max_poll_reqs;
		710	int do_croak = 0;
		711	struct timeval tv_start, tv_now;
		712	aio_req req;
		713
		714	if (max_poll_time)
		715	gettimeofday (&tv_start, 0);
		716
		717	for (;;)
527	{	718	{
		719	for (;;)
		720	{
		721	maybe_start_thread ();
		722
		723	LOCK (reslock);
		724	req = reqq_shift (&res_queue);
		725
		726	if (req)
		727	{
		728	--npending;
		729
		730	if (!res_queue.size)
		731	{
		732	/* read any signals sent by the worker threads */
		733	char buf [32];
		734	while (read (respipe [0], buf, 32) == 32)
		735	;
		736	}
		737	}
		738
		739	UNLOCK (reslock);
		740
		741	if (!req)
		742	break;
		743
		744	--nreqs;
		745
		746	if (req->type == REQ_GROUP && req->size)
		747	{
		748	req->int1 = 1; /* mark request as delayed */
		749	continue;
		750	}
		751	else
		752	{
		753	req_invoke (req);
		754
		755	count++;
		756	}
		757
		758	req_free (req);
		759
		760	if (maxreqs && !--maxreqs)
		761	break;
		762
		763	if (max_poll_time)
		764	{
		765	gettimeofday (&tv_now, 0);
		766
		767	if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
		768	break;
		769	}
		770	}
		771
		772	if (nreqs <= max_outstanding)
		773	break;
		774
528	poll_wait ();	775	poll_wait ();
529	poll_cb ();	776
		777	++maxreqs;
530	}	778	}
		779
		780	return count;
531	}	781	}
532		782
533	static void create_pipe ()	783	static void create_pipe ()
534	{	784	{
535	if (pipe (respipe))	785	if (pipe (respipe))
…		…
559	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)	809	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
560	{	810	{
561	ssize_t res;	811	ssize_t res;
562	off_t ooffset;	812	off_t ooffset;
563		813
564	pthread_mutex_lock (&preadwritelock);	814	LOCK (preadwritelock);
565	ooffset = lseek (fd, 0, SEEK_CUR);	815	ooffset = lseek (fd, 0, SEEK_CUR);
566	lseek (fd, offset, SEEK_SET);	816	lseek (fd, offset, SEEK_SET);
567	res = read (fd, buf, count);	817	res = read (fd, buf, count);
568	lseek (fd, ooffset, SEEK_SET);	818	lseek (fd, ooffset, SEEK_SET);
569	pthread_mutex_unlock (&preadwritelock);	819	UNLOCK (preadwritelock);
570		820
571	return res;	821	return res;
572	}	822	}
573		823
574	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)	824	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
575	{	825	{
576	ssize_t res;	826	ssize_t res;
577	off_t ooffset;	827	off_t ooffset;
578		828
579	pthread_mutex_lock (&preadwritelock);	829	LOCK (preadwritelock);
580	ooffset = lseek (fd, 0, SEEK_CUR);	830	ooffset = lseek (fd, 0, SEEK_CUR);
581	lseek (fd, offset, SEEK_SET);	831	lseek (fd, offset, SEEK_SET);
582	res = write (fd, buf, count);	832	res = write (fd, buf, count);
583	lseek (fd, offset, SEEK_SET);	833	lseek (fd, offset, SEEK_SET);
584	pthread_mutex_unlock (&preadwritelock);	834	UNLOCK (preadwritelock);
585		835
586	return res;	836	return res;
587	}	837	}
588	#endif	838	#endif
589		839
590	#if !HAVE_FDATASYNC	840	#if !HAVE_FDATASYNC
591	# define fdatasync fsync	841	# define fdatasync fsync
592	#endif	842	#endif
593		843
594	#if !HAVE_READAHEAD	844	#if !HAVE_READAHEAD
595	# define readahead aio_readahead	845	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
596		846
597	static ssize_t readahead (int fd, off_t offset, size_t count)	847	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
598	{	848	{
599	char readahead_buf[4096];	849	dBUF;
600		850
601	while (count > 0)	851	while (count > 0)
602	{	852	{
603	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);	853	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
604		854
605	pread (fd, readahead_buf, len, offset);	855	pread (fd, aio_buf, len, offset);
606	offset += len;	856	offset += len;
607	count -= len;	857	count -= len;
608	}	858	}
609		859
610	errno = 0;	860	errno = 0;
611	}	861	}
		862
612	#endif	863	#endif
613		864
614	#if !HAVE_READDIR_R	865	#if !HAVE_READDIR_R
615	# define readdir_r aio_readdir_r	866	# define readdir_r aio_readdir_r
616		867
…		…
619	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)	870	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
620	{	871	{
621	struct dirent *e;	872	struct dirent *e;
622	int errorno;	873	int errorno;
623		874
624	pthread_mutex_lock (&readdirlock);	875	LOCK (readdirlock);
625		876
626	e = readdir (dirp);	877	e = readdir (dirp);
627	errorno = errno;	878	errorno = errno;
628		879
629	if (e)	880	if (e)
…		…
632	strcpy (ent->d_name, e->d_name);	883	strcpy (ent->d_name, e->d_name);
633	}	884	}
634	else	885	else
635	*res = 0;	886	*res = 0;
636		887
637	pthread_mutex_unlock (&readdirlock);	888	UNLOCK (readdirlock);
638		889
639	errno = errorno;	890	errno = errorno;
640	return e ? 0 : -1;	891	return e ? 0 : -1;
641	}	892	}
642	#endif	893	#endif
643		894
644	/* sendfile always needs emulation */	895	/* sendfile always needs emulation */
645	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count)	896	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
646	{	897	{
647	ssize_t res;	898	ssize_t res;
648		899
649	if (!count)	900	if (!count)
650	return 0;	901	return 0;
…		…
661	{	912	{
662	off_t sbytes;	913	off_t sbytes;
663	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);	914	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
664		915
665	if (res < 0 && sbytes)	916	if (res < 0 && sbytes)
666	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */	917	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
667	res = sbytes;	918	res = sbytes;
668	}	919	}
669		920
670	# elif __hpux	921	# elif __hpux
671	res = sendfile (ofd, ifd, offset, count, 0, 0);	922	res = sendfile (ofd, ifd, offset, count, 0, 0);
…		…
699	#endif	950	#endif
700	)	951	)
701	)	952	)
702	{	953	{
703	/* emulate sendfile. this is a major pain in the ass */	954	/* emulate sendfile. this is a major pain in the ass */
704	char buf[4096];	955	dBUF;
		956
705	res = 0;	957	res = 0;
706		958
707	while (count)	959	while (count)
708	{	960	{
709	ssize_t cnt;	961	ssize_t cnt;
710		962
711	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);	963	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
712		964
713	if (cnt <= 0)	965	if (cnt <= 0)
714	{	966	{
715	if (cnt && !res) res = -1;	967	if (cnt && !res) res = -1;
716	break;	968	break;
717	}	969	}
718		970
719	cnt = write (ofd, buf, cnt);	971	cnt = write (ofd, aio_buf, cnt);
720		972
721	if (cnt <= 0)	973	if (cnt <= 0)
722	{	974	{
723	if (cnt && !res) res = -1;	975	if (cnt && !res) res = -1;
724	break;	976	break;
…		…
732		984
733	return res;	985	return res;
734	}	986	}
735		987
736	/* read a full directory */	988	/* read a full directory */
737	static int scandir_ (const char *path, void **namesp)	989	static void scandir_ (aio_req req, worker *self)
738	{	990	{
739	DIR *dirp = opendir (path);	991	DIR *dirp;
740	union	992	union
741	{	993	{
742	struct dirent d;	994	struct dirent d;
743	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];	995	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
744	} u;	996	} *u;
745	struct dirent *entp;	997	struct dirent *entp;
746	char *name, *names;	998	char *name, *names;
747	int memlen = 4096;	999	int memlen = 4096;
748	int memofs = 0;	1000	int memofs = 0;
749	int res = 0;	1001	int res = 0;
750	int errorno;	1002	int errorno;
751		1003
752	if (!dirp)	1004	LOCK (wrklock);
753	return -1;	1005	self->dirp = dirp = opendir (req->ptr1);
754		1006	self->dbuf = u = malloc (sizeof (*u));
		1007	req->flags |= FLAG_PTR2_FREE;
755	names = malloc (memlen);	1008	req->ptr2 = names = malloc (memlen);
		1009	UNLOCK (wrklock);
		1010
		1011	if (dirp && u && names)
		1012	for (;;)
		1013	{
		1014	errno = 0;
		1015	readdir_r (dirp, &u->d, &entp);
		1016
		1017	if (!entp)
		1018	break;
		1019
		1020	name = entp->d_name;
		1021
		1022	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
		1023	{
		1024	int len = strlen (name) + 1;
		1025
		1026	res++;
		1027
		1028	while (memofs + len > memlen)
		1029	{
		1030	memlen *= 2;
		1031	LOCK (wrklock);
		1032	req->ptr2 = names = realloc (names, memlen);
		1033	UNLOCK (wrklock);
		1034
		1035	if (!names)
		1036	break;
		1037	}
		1038
		1039	memcpy (names + memofs, name, len);
		1040	memofs += len;
		1041	}
		1042	}
		1043
		1044	if (errno)
		1045	res = -1;
		1046
		1047	req->result = res;
		1048	}
		1049
		1050	/*****************************************************************************/
		1051
		1052	static void *aio_proc (void *thr_arg)
		1053	{
		1054	aio_req req;
		1055	struct timespec ts;
		1056	worker *self = (worker *)thr_arg;
		1057
		1058	/* try to distribute timeouts somewhat evenly */
		1059	ts.tv_nsec = (((unsigned long)self + (unsigned long)ts.tv_sec) & 1023UL)
		1060	* (1000000000UL / 1024UL);
756		1061
757	for (;;)	1062	for (;;)
758	{	1063	{
759	errno = 0, readdir_r (dirp, &u.d, &entp);	1064	ts.tv_sec = time (0) + IDLE_TIMEOUT;
760		1065
761	if (!entp)	1066	LOCK (reqlock);
762	break;
763
764	name = entp->d_name;
765
766	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
767	{
768	int len = strlen (name) + 1;
769
770	res++;
771
772	while (memofs + len > memlen)
773	{
774	memlen *= 2;
775	names = realloc (names, memlen);
776	if (!names)
777	break;
778	}
779
780	memcpy (names + memofs, name, len);
781	memofs += len;
782	}
783	}
784
785	errorno = errno;
786	closedir (dirp);
787
788	if (errorno)
789	{
790	free (names);
791	errno = errorno;
792	res = -1;
793	}
794
795	*namesp = (void *)names;
796	return res;
797	}
798
799	/*****************************************************************************/
800
801	static void *aio_proc (void *thr_arg)
802	{
803	aio_req req;
804	int type;
805
806	do
807	{
808	pthread_mutex_lock (&reqlock);
809		1067
810	for (;;)	1068	for (;;)
811	{	1069	{
812	req = reqs;	1070	self->req = req = reqq_shift (&req_queue);
813
814	if (reqs)
815	{
816	reqs = reqs->next;
817	if (!reqs) reqe = 0;
818	}
819		1071
820	if (req)	1072	if (req)
821	break;	1073	break;
822		1074
		1075	++idle;
		1076
		1077	if (pthread_cond_timedwait (&reqwait, &reqlock, &ts)
		1078	== ETIMEDOUT)
		1079	{
		1080	if (idle > max_idle)
		1081	{
		1082	--idle;
		1083	UNLOCK (reqlock);
		1084	LOCK (wrklock);
		1085	--started;
		1086	UNLOCK (wrklock);
		1087	goto quit;
		1088	}
		1089
		1090	/* we are allowed to idle, so do so without any timeout */
823	pthread_cond_wait (&reqwait, &reqlock);	1091	pthread_cond_wait (&reqwait, &reqlock);
		1092	ts.tv_sec = time (0) + IDLE_TIMEOUT;
		1093	}
		1094
		1095	--idle;
824	}	1096	}
825		1097
826	pthread_mutex_unlock (&reqlock);	1098	--nready;
		1099
		1100	UNLOCK (reqlock);
827		1101
828	errno = 0; /* strictly unnecessary */	1102	errno = 0; /* strictly unnecessary */
829	type = req->type; /* remember type for QUIT check */
830		1103
831	if (!(req->flags & FLAG_CANCELLED))	1104	if (!(req->flags & FLAG_CANCELLED))
832	switch (type)	1105	switch (req->type)
833	{	1106	{
834	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;	1107	case REQ_READ: req->result = pread (req->int1, req->ptr1, req->size, req->offs); break;
835	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;	1108	case REQ_WRITE: req->result = pwrite (req->int1, req->ptr1, req->size, req->offs); break;
836		1109
837	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	1110	case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
838	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;	1111	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
839		1112
840	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	1113	case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
841	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	1114	case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
842	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	1115	case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
843		1116
844	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;	1117	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
845	case REQ_CLOSE: req->result = close (req->fd); break;	1118	case REQ_CLOSE: req->result = close (req->int1); break;
846	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	1119	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
847	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;	1120	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
848	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;	1121	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
849	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;	1122	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
850	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;	1123	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
		1124	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
		1125	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
851		1126
852	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	1127	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
853	case REQ_FSYNC: req->result = fsync (req->fd); break;	1128	case REQ_FSYNC: req->result = fsync (req->int1); break;
854	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;	1129	case REQ_READDIR: scandir_ (req, self); break;
855		1130
856	case REQ_SLEEP:	1131	case REQ_BUSY:
857	{	1132	{
858	struct timeval tv;	1133	struct timeval tv;
859		1134
860	tv.tv_sec = req->fd;	1135	tv.tv_sec = req->int1;
861	tv.tv_usec = req->fd2;	1136	tv.tv_usec = req->int2;
862		1137
863	req->result = select (0, 0, 0, 0, &tv);	1138	req->result = select (0, 0, 0, 0, &tv);
864	}	1139	}
865		1140
866	case REQ_GROUP:	1141	case REQ_GROUP:
867	case REQ_NOP:	1142	case REQ_NOP:
		1143	break;
		1144
868	case REQ_QUIT:	1145	case REQ_QUIT:
869	break;	1146	goto quit;
870		1147
871	default:	1148	default:
872	req->result = ENOSYS;	1149	req->result = ENOSYS;
873	break;	1150	break;
874	}	1151	}
875		1152
876	req->errorno = errno;	1153	req->errorno = errno;
877		1154
878	pthread_mutex_lock (&reslock);	1155	LOCK (reslock);
879		1156
880	req->next = 0;	1157	++npending;
881		1158
882	if (rese)	1159	if (!reqq_push (&res_queue, req))
883	{
884	rese->next = req;
885	rese = req;
886	}
887	else
888	{
889	rese = ress = req;
890
891	/* write a dummy byte to the pipe so fh becomes ready */	1160	/* write a dummy byte to the pipe so fh becomes ready */
892	write (respipe [1], &respipe, 1);	1161	write (respipe [1], &respipe, 1);
893	}
894		1162
895	pthread_mutex_unlock (&reslock);	1163	self->req = 0;
		1164	worker_clear (self);
		1165
		1166	UNLOCK (reslock);
896	}	1167	}
897	while (type != REQ_QUIT);	1168
		1169	quit:
		1170	LOCK (wrklock);
		1171	worker_free (self);
		1172	UNLOCK (wrklock);
898		1173
899	return 0;	1174	return 0;
900	}	1175	}
901		1176
902	/*****************************************************************************/	1177	/*****************************************************************************/
903		1178
904	static void atfork_prepare (void)	1179	static void atfork_prepare (void)
905	{	1180	{
906	pthread_mutex_lock (&reqlock);	1181	LOCK (wrklock);
907	pthread_mutex_lock (&reslock);	1182	LOCK (reqlock);
		1183	LOCK (reslock);
908	#if !HAVE_PREADWRITE	1184	#if !HAVE_PREADWRITE
909	pthread_mutex_lock (&preadwritelock);	1185	LOCK (preadwritelock);
910	#endif	1186	#endif
911	#if !HAVE_READDIR_R	1187	#if !HAVE_READDIR_R
912	pthread_mutex_lock (&readdirlock);	1188	LOCK (readdirlock);
913	#endif	1189	#endif
914	}	1190	}
915		1191
916	static void atfork_parent (void)	1192	static void atfork_parent (void)
917	{	1193	{
918	#if !HAVE_READDIR_R	1194	#if !HAVE_READDIR_R
919	pthread_mutex_unlock (&readdirlock);	1195	UNLOCK (readdirlock);
920	#endif	1196	#endif
921	#if !HAVE_PREADWRITE	1197	#if !HAVE_PREADWRITE
922	pthread_mutex_unlock (&preadwritelock);	1198	UNLOCK (preadwritelock);
923	#endif	1199	#endif
924	pthread_mutex_unlock (&reslock);	1200	UNLOCK (reslock);
925	pthread_mutex_unlock (&reqlock);	1201	UNLOCK (reqlock);
		1202	UNLOCK (wrklock);
926	}	1203	}
927		1204
928	static void atfork_child (void)	1205	static void atfork_child (void)
929	{	1206	{
930	aio_req prv;	1207	aio_req prv;
931		1208
932	started = 0;	1209	while (prv = reqq_shift (&req_queue))
		1210	req_free (prv);
933		1211
934	while (reqs)	1212	while (prv = reqq_shift (&res_queue))
		1213	req_free (prv);
		1214
		1215	while (wrk_first.next != &wrk_first)
935	{	1216	{
936	prv = reqs;	1217	worker *wrk = wrk_first.next;
937	reqs = prv->next;	1218
		1219	if (wrk->req)
		1220	req_free (wrk->req);
		1221
		1222	worker_clear (wrk);
938	req_free (prv);	1223	worker_free (wrk);
939	}	1224	}
940		1225
941	reqs = reqe = 0;	1226	started = 0;
942		1227	idle = 0;
943	while (ress)	1228	nreqs = 0;
944	{	1229	nready = 0;
945	prv = ress;	1230	npending = 0;
946	ress = prv->next;
947	req_free (prv);
948	}
949
950	ress = rese = 0;
951		1231
952	close (respipe [0]);	1232	close (respipe [0]);
953	close (respipe [1]);	1233	close (respipe [1]);
954	create_pipe ();	1234	create_pipe ();
955		1235
…		…
982	PROTOTYPES: ENABLE	1262	PROTOTYPES: ENABLE
983		1263
984	BOOT:	1264	BOOT:
985	{	1265	{
986	HV *stash = gv_stashpv ("IO::AIO", 1);	1266	HV *stash = gv_stashpv ("IO::AIO", 1);
		1267
987	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	1268	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
988	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	1269	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
989	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));	1270	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
		1271	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
		1272	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
		1273	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
990		1274
991	create_pipe ();	1275	create_pipe ();
992	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	1276	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
993	}	1277	}
994		1278
995	void	1279	void
996	min_parallel (nthreads)	1280	max_poll_reqs (int nreqs)
997	int nthreads
998	PROTOTYPE: $	1281	PROTOTYPE: $
		1282	CODE:
		1283	max_poll_reqs = nreqs;
999		1284
1000	void	1285	void
1001	max_parallel (nthreads)	1286	max_poll_time (double nseconds)
1002	int nthreads
1003	PROTOTYPE: $	1287	PROTOTYPE: $
		1288	CODE:
		1289	max_poll_time = nseconds * AIO_TICKS;
		1290
		1291	void
		1292	min_parallel (int nthreads)
		1293	PROTOTYPE: $
		1294
		1295	void
		1296	max_parallel (int nthreads)
		1297	PROTOTYPE: $
		1298
		1299	void
		1300	max_idle (int nthreads)
		1301	PROTOTYPE: $
		1302	CODE:
		1303	set_max_idle (nthreads);
1004		1304
1005	int	1305	int
1006	max_outstanding (nreqs)	1306	max_outstanding (int maxreqs)
1007	int nreqs	1307	PROTOTYPE: $
1008	PROTOTYPE: $
1009	CODE:	1308	CODE:
1010	RETVAL = max_outstanding;	1309	RETVAL = max_outstanding;
1011	max_outstanding = nreqs;	1310	max_outstanding = maxreqs;
		1311	OUTPUT:
		1312	RETVAL
1012		1313
1013	void	1314	void
1014	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	1315	aio_open (pathname,flags,mode,callback=&PL_sv_undef)
1015	SV * pathname	1316	SV8 * pathname
1016	int flags	1317	int flags
1017	int mode	1318	int mode
1018	SV * callback	1319	SV * callback
1019	PROTOTYPE: $$$;$	1320	PROTOTYPE: $$$;$
1020	PPCODE:	1321	PPCODE:
1021	{	1322	{
1022	dREQ;	1323	dREQ;
1023		1324
1024	req->type = REQ_OPEN;	1325	req->type = REQ_OPEN;
1025	req->data = newSVsv (pathname);	1326	req->sv1 = newSVsv (pathname);
1026	req->dataptr = SvPVbyte_nolen (req->data);	1327	req->ptr1 = SvPVbyte_nolen (req->sv1);
1027	req->fd = flags;	1328	req->int1 = flags;
1028	req->mode = mode;	1329	req->mode = mode;
1029		1330
1030	REQ_SEND;	1331	REQ_SEND;
1031	}	1332	}
1032		1333
…		…
1042	PPCODE:	1343	PPCODE:
1043	{	1344	{
1044	dREQ;	1345	dREQ;
1045		1346
1046	req->type = ix;	1347	req->type = ix;
1047	req->fh = newSVsv (fh);	1348	req->fh = newSVsv (fh);
1048	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1349	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1049		1350
1050	REQ_SEND (req);	1351	REQ_SEND (req);
1051	}	1352	}
1052		1353
1053	void	1354	void
1054	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1355	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
1055	SV * fh	1356	SV * fh
1056	UV offset	1357	UV offset
1057	UV length	1358	UV length
1058	SV * data	1359	SV8 * data
1059	UV dataoffset	1360	UV dataoffset
1060	SV * callback	1361	SV * callback
1061	ALIAS:	1362	ALIAS:
1062	aio_read = REQ_READ	1363	aio_read = REQ_READ
1063	aio_write = REQ_WRITE	1364	aio_write = REQ_WRITE
1064	PROTOTYPE: $$$$$;$	1365	PROTOTYPE: $$$$$;$
1065	PPCODE:	1366	PPCODE:
1066	{	1367	{
1067	aio_req req;
1068	STRLEN svlen;	1368	STRLEN svlen;
1069	char *svptr = SvPVbyte (data, svlen);	1369	char *svptr = SvPVbyte (data, svlen);
1070		1370
1071	SvUPGRADE (data, SVt_PV);	1371	SvUPGRADE (data, SVt_PV);
1072	SvPOK_on (data);	1372	SvPOK_on (data);
…		…
1094		1394
1095	{	1395	{
1096	dREQ;	1396	dREQ;
1097		1397
1098	req->type = ix;	1398	req->type = ix;
1099	req->fh = newSVsv (fh);	1399	req->fh = newSVsv (fh);
1100	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1400	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
1101	: IoOFP (sv_2io (fh)));	1401	: IoOFP (sv_2io (fh)));
1102	req->offset = offset;	1402	req->offs = offset;
1103	req->length = length;	1403	req->size = length;
1104	req->data = SvREFCNT_inc (data);	1404	req->sv1 = SvREFCNT_inc (data);
1105	req->dataptr = (char *)svptr + dataoffset;	1405	req->ptr1 = (char *)svptr + dataoffset;
		1406	req->stroffset = dataoffset;
1106		1407
1107	if (!SvREADONLY (data))	1408	if (!SvREADONLY (data))
1108	{	1409	{
1109	SvREADONLY_on (data);	1410	SvREADONLY_on (data);
1110	req->data2ptr = (void *)data;	1411	req->flags |= FLAG_SV1_RO_OFF;
1111	}	1412	}
1112		1413
1113	REQ_SEND;	1414	REQ_SEND;
1114	}	1415	}
		1416	}
		1417
		1418	void
		1419	aio_readlink (path,callback=&PL_sv_undef)
		1420	SV8 * path
		1421	SV * callback
		1422	PROTOTYPE: $$;$
		1423	PPCODE:
		1424	{
		1425	SV *data;
		1426	dREQ;
		1427
		1428	data = newSV (NAME_MAX);
		1429	SvPOK_on (data);
		1430
		1431	req->type = REQ_READLINK;
		1432	req->fh = newSVsv (path);
		1433	req->ptr2 = SvPVbyte_nolen (req->fh);
		1434	req->sv1 = data;
		1435	req->ptr1 = SvPVbyte_nolen (data);
		1436
		1437	REQ_SEND;
1115	}	1438	}
1116		1439
1117	void	1440	void
1118	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1441	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)
1119	SV * out_fh	1442	SV * out_fh
…		…
1125	PPCODE:	1448	PPCODE:
1126	{	1449	{
1127	dREQ;	1450	dREQ;
1128		1451
1129	req->type = REQ_SENDFILE;	1452	req->type = REQ_SENDFILE;
1130	req->fh = newSVsv (out_fh);	1453	req->fh = newSVsv (out_fh);
1131	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1454	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1132	req->fh2 = newSVsv (in_fh);	1455	req->sv2 = newSVsv (in_fh);
1133	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1456	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1134	req->offset = in_offset;	1457	req->offs = in_offset;
1135	req->length = length;	1458	req->size = length;
1136		1459
1137	REQ_SEND;	1460	REQ_SEND;
1138	}	1461	}
1139		1462
1140	void	1463	void
…		…
1147	PPCODE:	1470	PPCODE:
1148	{	1471	{
1149	dREQ;	1472	dREQ;
1150		1473
1151	req->type = REQ_READAHEAD;	1474	req->type = REQ_READAHEAD;
1152	req->fh = newSVsv (fh);	1475	req->fh = newSVsv (fh);
1153	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1476	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1154	req->offset = offset;	1477	req->offs = offset;
1155	req->length = length;	1478	req->size = length;
1156		1479
1157	REQ_SEND;	1480	REQ_SEND;
1158	}	1481	}
1159		1482
1160	void	1483	void
1161	aio_stat (fh_or_path,callback=&PL_sv_undef)	1484	aio_stat (fh_or_path,callback=&PL_sv_undef)
1162	SV * fh_or_path	1485	SV8 * fh_or_path
1163	SV * callback	1486	SV * callback
1164	ALIAS:	1487	ALIAS:
1165	aio_stat = REQ_STAT	1488	aio_stat = REQ_STAT
1166	aio_lstat = REQ_LSTAT	1489	aio_lstat = REQ_LSTAT
1167	PPCODE:	1490	PPCODE:
1168	{	1491	{
1169	dREQ;	1492	dREQ;
1170		1493
1171	New (0, req->statdata, 1, Stat_t);	1494	req->ptr2 = malloc (sizeof (Stat_t));
1172	if (!req->statdata)	1495	if (!req->ptr2)
1173	{	1496	{
1174	req_free (req);	1497	req_free (req);
1175	croak ("out of memory during aio_req->statdata allocation");	1498	croak ("out of memory during aio_stat statdata allocation");
1176	}	1499	}
		1500
		1501	req->flags |= FLAG_PTR2_FREE;
1177		1502
1178	if (SvPOK (fh_or_path))	1503	if (SvPOK (fh_or_path))
1179	{	1504	{
1180	req->type = ix;	1505	req->type = ix;
1181	req->data = newSVsv (fh_or_path);	1506	req->sv1 = newSVsv (fh_or_path);
1182	req->dataptr = SvPVbyte_nolen (req->data);	1507	req->ptr1 = SvPVbyte_nolen (req->sv1);
1183	}	1508	}
1184	else	1509	else
1185	{	1510	{
1186	req->type = REQ_FSTAT;	1511	req->type = REQ_FSTAT;
1187	req->fh = newSVsv (fh_or_path);	1512	req->fh = newSVsv (fh_or_path);
1188	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1513	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1189	}	1514	}
1190		1515
1191	REQ_SEND;	1516	REQ_SEND;
1192	}	1517	}
1193		1518
1194	void	1519	void
1195	aio_unlink (pathname,callback=&PL_sv_undef)	1520	aio_unlink (pathname,callback=&PL_sv_undef)
1196	SV * pathname	1521	SV8 * pathname
1197	SV * callback	1522	SV * callback
1198	ALIAS:	1523	ALIAS:
1199	aio_unlink = REQ_UNLINK	1524	aio_unlink = REQ_UNLINK
1200	aio_rmdir = REQ_RMDIR	1525	aio_rmdir = REQ_RMDIR
1201	aio_readdir = REQ_READDIR	1526	aio_readdir = REQ_READDIR
1202	PPCODE:	1527	PPCODE:
1203	{	1528	{
1204	dREQ;	1529	dREQ;
1205		1530
1206	req->type = ix;	1531	req->type = ix;
1207	req->data = newSVsv (pathname);	1532	req->sv1 = newSVsv (pathname);
1208	req->dataptr = SvPVbyte_nolen (req->data);	1533	req->ptr1 = SvPVbyte_nolen (req->sv1);
1209		1534
1210	REQ_SEND;	1535	REQ_SEND;
1211	}	1536	}
1212		1537
1213	void	1538	void
1214	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1539	aio_link (oldpath,newpath,callback=&PL_sv_undef)
1215	SV * oldpath	1540	SV8 * oldpath
1216	SV * newpath	1541	SV8 * newpath
1217	SV * callback	1542	SV * callback
1218	ALIAS:	1543	ALIAS:
1219	aio_link = REQ_LINK	1544	aio_link = REQ_LINK
1220	aio_symlink = REQ_SYMLINK	1545	aio_symlink = REQ_SYMLINK
1221	aio_rename = REQ_RENAME	1546	aio_rename = REQ_RENAME
1222	PPCODE:	1547	PPCODE:
1223	{	1548	{
1224	dREQ;	1549	dREQ;
1225		1550
1226	req->type = ix;	1551	req->type = ix;
1227	req->fh = newSVsv (oldpath);	1552	req->fh = newSVsv (oldpath);
1228	req->data2ptr = SvPVbyte_nolen (req->fh);	1553	req->ptr2 = SvPVbyte_nolen (req->fh);
1229	req->data = newSVsv (newpath);	1554	req->sv1 = newSVsv (newpath);
1230	req->dataptr = SvPVbyte_nolen (req->data);	1555	req->ptr1 = SvPVbyte_nolen (req->sv1);
1231		1556
1232	REQ_SEND;	1557	REQ_SEND;
1233	}	1558	}
1234		1559
1235	void	1560	void
1236	aio_sleep (delay,callback=&PL_sv_undef)	1561	aio_mknod (pathname,mode,dev,callback=&PL_sv_undef)
1237	double delay	1562	SV8 * pathname
1238	SV * callback	1563	SV * callback
		1564	UV mode
		1565	UV dev
1239	PPCODE:	1566	PPCODE:
1240	{	1567	{
1241	dREQ;	1568	dREQ;
		1569
		1570	req->type = REQ_MKNOD;
		1571	req->sv1 = newSVsv (pathname);
		1572	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1573	req->mode = (mode_t)mode;
		1574	req->offs = dev;
		1575
		1576	REQ_SEND;
		1577	}
1242		1578
		1579	void
		1580	aio_busy (delay,callback=&PL_sv_undef)
		1581	double delay
		1582	SV * callback
		1583	PPCODE:
		1584	{
		1585	dREQ;
		1586
1243	req->type = REQ_SLEEP;	1587	req->type = REQ_BUSY;
1244	req->fd = delay < 0. ? 0 : delay;	1588	req->int1 = delay < 0. ? 0 : delay;
1245	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1589	req->int2 = delay < 0. ? 0 : 1000. * (delay - req->int1);
1246		1590
1247	REQ_SEND;	1591	REQ_SEND;
1248	}	1592	}
1249		1593
1250	void	1594	void
…		…
1254	PPCODE:	1598	PPCODE:
1255	{	1599	{
1256	dREQ;	1600	dREQ;
1257		1601
1258	req->type = REQ_GROUP;	1602	req->type = REQ_GROUP;
		1603
1259	req_send (req);	1604	req_send (req);
1260
1261	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1605	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1262	}	1606	}
1263		1607
1264	void	1608	void
1265	aio_nop (callback=&PL_sv_undef)	1609	aio_nop (callback=&PL_sv_undef)
1266	SV * callback	1610	SV * callback
1267	PPCODE:	1611	PPCODE:
1268	{	1612	{
1269	dREQ;	1613	dREQ;
1270		1614
1271	req->type = REQ_NOP;	1615	req->type = REQ_NOP;
1272		1616
1273	REQ_SEND;	1617	REQ_SEND;
1274	}	1618	}
1275		1619
1276	#if 0	1620	int
1277		1621	aioreq_pri (int pri = 0)
1278	void	1622	PROTOTYPE: ;$
1279	aio_pri (int pri = DEFAULT_PRI)
1280	CODE:	1623	CODE:
		1624	RETVAL = next_pri - PRI_BIAS;
		1625	if (items > 0)
		1626	{
1281	if (pri < PRI_MIN) pri = PRI_MIN;	1627	if (pri < PRI_MIN) pri = PRI_MIN;
1282	if (pri > PRI_MAX) pri = PRI_MAX;	1628	if (pri > PRI_MAX) pri = PRI_MAX;
1283	next_pri = pri + PRI_BIAS;	1629	next_pri = pri + PRI_BIAS;
		1630	}
		1631	OUTPUT:
		1632	RETVAL
1284		1633
1285	#endif	1634	void
		1635	aioreq_nice (int nice = 0)
		1636	CODE:
		1637	nice = next_pri - nice;
		1638	if (nice < PRI_MIN) nice = PRI_MIN;
		1639	if (nice > PRI_MAX) nice = PRI_MAX;
		1640	next_pri = nice + PRI_BIAS;
1286		1641
1287	void	1642	void
1288	flush ()	1643	flush ()
1289	PROTOTYPE:	1644	PROTOTYPE:
1290	CODE:	1645	CODE:
…		…
1292	{	1647	{
1293	poll_wait ();	1648	poll_wait ();
1294	poll_cb ();	1649	poll_cb ();
1295	}	1650	}
1296		1651
1297	void	1652	int
1298	poll()	1653	poll()
1299	PROTOTYPE:	1654	PROTOTYPE:
1300	CODE:	1655	CODE:
1301	if (nreqs)
1302	{
1303	poll_wait ();	1656	poll_wait ();
1304	poll_cb ();	1657	RETVAL = poll_cb ();
1305	}	1658	OUTPUT:
		1659	RETVAL
1306		1660
1307	int	1661	int
1308	poll_fileno()	1662	poll_fileno()
1309	PROTOTYPE:	1663	PROTOTYPE:
1310	CODE:	1664	CODE:
…		…
1322		1676
1323	void	1677	void
1324	poll_wait()	1678	poll_wait()
1325	PROTOTYPE:	1679	PROTOTYPE:
1326	CODE:	1680	CODE:
1327	if (nreqs)
1328	poll_wait ();	1681	poll_wait ();
1329		1682
1330	int	1683	int
1331	nreqs()	1684	nreqs()
1332	PROTOTYPE:	1685	PROTOTYPE:
1333	CODE:	1686	CODE:
1334	RETVAL = nreqs;	1687	RETVAL = nreqs;
1335	OUTPUT:	1688	OUTPUT:
1336	RETVAL	1689	RETVAL
1337		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
1338	PROTOTYPES: DISABLE	1717	PROTOTYPES: DISABLE
1339		1718
1340	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1719	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1341		1720
1342	void	1721	void
1343	cancel (aio_req_ornot req)	1722	cancel (aio_req_ornot req)
1344	PROTOTYPE:
1345	CODE:	1723	CODE:
1346	req_cancel (req);	1724	req_cancel (req);
1347		1725
1348	void	1726	void
1349	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1727	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
…		…
1358	PPCODE:	1736	PPCODE:
1359	{	1737	{
1360	int i;	1738	int i;
1361	aio_req req;	1739	aio_req req;
1362		1740
1363	if (grp->fd == 2)	1741	if (grp->int1 == 2)
1364	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");
1365		1743
1366	for (i = 1; i < items; ++i )	1744	for (i = 1; i < items; ++i )
1367	{	1745	{
1368	if (GIMME_V != G_VOID)	1746	if (GIMME_V != G_VOID)
…		…
1370		1748
1371	req = SvAIO_REQ (ST (i));	1749	req = SvAIO_REQ (ST (i));
1372		1750
1373	if (req)	1751	if (req)
1374	{	1752	{
1375	++grp->length;	1753	++grp->size;
1376	req->grp = grp;	1754	req->grp = grp;
1377		1755
1378	req->grp_prev = 0;	1756	req->grp_prev = 0;
1379	req->grp_next = grp->grp_first;	1757	req->grp_next = grp->grp_first;
1380		1758
…		…
1385	}	1763	}
1386	}	1764	}
1387	}	1765	}
1388		1766
1389	void	1767	void
		1768	cancel_subs (aio_req_ornot req)
		1769	CODE:
		1770	req_cancel_subs (req);
		1771
		1772	void
1390	result (aio_req grp, ...)	1773	result (aio_req grp, ...)
1391	CODE:	1774	CODE:
1392	{	1775	{
1393	int i;	1776	int i;
		1777	AV *av;
		1778
		1779	grp->errorno = errno;
		1780
1394	AV *av = newAV ();	1781	av = newAV ();
1395		1782
1396	for (i = 1; i < items; ++i )	1783	for (i = 1; i < items; ++i )
1397	av_push (av, newSVsv (ST (i)));	1784	av_push (av, newSVsv (ST (i)));
1398		1785
1399	SvREFCNT_dec (grp->data);	1786	SvREFCNT_dec (grp->sv1);
1400	grp->data = (SV *)av;	1787	grp->sv1 = (SV *)av;
1401	}	1788	}
1402		1789
1403	void	1790	void
		1791	errno (aio_req grp, int errorno = errno)
		1792	CODE:
		1793	grp->errorno = errorno;
		1794
		1795	void
1404	feed_limit (aio_req grp, int limit)	1796	limit (aio_req grp, int limit)
1405	CODE:	1797	CODE:
1406	grp->fd2 = limit;	1798	grp->int2 = limit;
1407	aio_grp_feed (grp);	1799	aio_grp_feed (grp);
1408		1800
1409	void	1801	void
1410	feed (aio_req grp, SV *callback=&PL_sv_undef)	1802	feed (aio_req grp, SV *callback=&PL_sv_undef)
1411	CODE:	1803	CODE:
1412	{	1804	{
1413	SvREFCNT_dec (grp->fh2);	1805	SvREFCNT_dec (grp->sv2);
1414	grp->fh2 = newSVsv (callback);	1806	grp->sv2 = newSVsv (callback);
1415		1807
1416	if (grp->fd2 <= 0)	1808	if (grp->int2 <= 0)
1417	grp->fd2 = 2;	1809	grp->int2 = 2;
1418		1810
1419	aio_grp_feed (grp);	1811	aio_grp_feed (grp);
1420	}	1812	}
1421		1813

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