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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.63 by root, Mon Oct 23 23:48:31 2006 UTC vs.
Revision 1.91 by root, Wed Nov 8 01:57:43 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	pthread_mutex_lock (&reslock);	409	SAVETMPS;
213	req = ress;	410	PUSHMARK (SP);
214	pthread_mutex_unlock (&reslock);	411	EXTEND (SP, 1);
215		412
216	if (req)	413	switch (req->type)
217	return;	414	{
		415	case REQ_READDIR:
		416	{
		417	SV *rv = &PL_sv_undef;
218		418
219	FD_ZERO(&rfd);	419	if (req->result >= 0)
220	FD_SET(respipe [0], &rfd);	420	{
		421	int i;
		422	char *buf = req->ptr2;
		423	AV *av = newAV ();
221		424
222	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;
223	}	514	}
224	}
225		515
226	static void req_invoke (aio_req req)	516	if (req->grp)
227	{
228	dSP;
229	int errorno = errno;
230
231	if (req->flags & FLAG_CANCELLED || !SvOK (req->callback))
232	return;
233
234	errno = req->errorno;
235
236	ENTER;
237	SAVETMPS;
238	PUSHMARK (SP);
239	EXTEND (SP, 1);
240
241	switch (req->type)
242	{	517	{
243	case REQ_READDIR:	518	aio_req grp = req->grp;
244	{
245	SV *rv = &PL_sv_undef;
246		519
247	if (req->result >= 0)	520	/* unlink request */
248	{	521	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
249	char *buf = req->data2ptr;	522	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
250	AV *av = newAV ();
251		523
252	while (req->result)	524	if (grp->grp_first == req)
253	{	525	grp->grp_first = req->grp_next;
254	SV *sv = newSVpv (buf, 0);
255		526
256	av_push (av, sv);	527	aio_grp_dec (grp);
257	buf += SvCUR (sv) + 1;
258	req->result--;
259	}
260
261	rv = sv_2mortal (newRV_noinc ((SV *)av));
262	}
263
264	PUSHs (rv);
265	}
266	break;
267
268	case REQ_OPEN:
269	{
270	/* convert fd to fh */
271	SV *fh;
272
273	PUSHs (sv_2mortal (newSViv (req->result)));
274	PUTBACK;
275	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
276	SPAGAIN;
277
278	fh = SvREFCNT_inc (POPs);
279
280	PUSHMARK (SP);
281	XPUSHs (sv_2mortal (fh));
282	}
283	break;
284
285	case REQ_GROUP:
286	req->fd = 2; /* mark group as finished */
287
288	if (req->data)
289	{
290	int i;
291	AV *av = (AV *)req->data;
292
293	EXTEND (SP, AvFILL (av) + 1);
294	for (i = 0; i <= AvFILL (av); ++i)
295	PUSHs (*av_fetch (av, i, 0));
296	}
297	break;
298
299	case REQ_NOP:
300	case REQ_SLEEP:
301	break;
302
303	default:
304	PUSHs (sv_2mortal (newSViv (req->result)));
305	break;
306	}	528	}
307
308
309	PUTBACK;
310	call_sv (req->callback, G_VOID | G_EVAL);
311	SPAGAIN;
312
313	FREETMPS;
314	LEAVE;
315
316	errno = errorno;
317		529
318	if (SvTRUE (ERRSV))	530	if (SvTRUE (ERRSV))
319	{	531	{
320	req_free (req);	532	req_free (req);
321	croak (0);	533	croak (0);
322	}	534	}
323	}	535	}
324		536
325	static void req_free (aio_req req)	537	static void req_free (aio_req req)
326	{	538	{
327	if (req->grp)
328	{
329	aio_req grp = req->grp;
330
331	/* unlink request */
332	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
333	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
334
335	if (grp->grp_first == req)
336	grp->grp_first = req->grp_next;
337
338	aio_grp_dec (grp);
339	}
340
341	if (req->self)	539	if (req->self)
342	{	540	{
343	sv_unmagic (req->self, PERL_MAGIC_ext);	541	sv_unmagic (req->self, PERL_MAGIC_ext);
344	SvREFCNT_dec (req->self);	542	SvREFCNT_dec (req->self);
345	}	543	}
346		544
347	SvREFCNT_dec (req->data);
348	SvREFCNT_dec (req->fh);	545	SvREFCNT_dec (req->fh);
		546	SvREFCNT_dec (req->sv1);
349	SvREFCNT_dec (req->fh2);	547	SvREFCNT_dec (req->sv2);
350	SvREFCNT_dec (req->callback);	548	SvREFCNT_dec (req->callback);
351	Safefree (req->statdata);
352		549
353	if (req->type == REQ_READDIR && req->result >= 0)	550	if (req->flags & FLAG_PTR2_FREE)
354	free (req->data2ptr);	551	free (req->ptr2);
355		552
356	Safefree (req);	553	Safefree (req);
357	}	554	}
358		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
359	static void req_cancel (aio_req req)	570	static void req_cancel (aio_req req)
360	{	571	{
361	req->flags |= FLAG_CANCELLED;	572	req->flags |= FLAG_CANCELLED;
362		573
363	if (req->type == REQ_GROUP)	574	req_cancel_subs (req);
364	{
365	aio_req sub;
366
367	for (sub = req->grp_first; sub; sub = sub->grp_next)
368	req_cancel (sub);
369	}
370	}
371
372	static int poll_cb ()
373	{
374	dSP;
375	int count = 0;
376	int do_croak = 0;
377	aio_req req;
378
379	for (;;)
380	{
381	pthread_mutex_lock (&reslock);
382	req = ress;
383
384	if (req)
385	{
386	ress = req->next;
387
388	if (!ress)
389	{
390	/* read any signals sent by the worker threads */
391	char buf [32];
392	while (read (respipe [0], buf, 32) == 32)
393	;
394
395	rese = 0;
396	}
397	}
398
399	pthread_mutex_unlock (&reslock);
400
401	if (!req)
402	break;
403
404	--nreqs;
405
406	if (req->type == REQ_QUIT)
407	started--;
408	else if (req->type == REQ_GROUP && req->length)
409	{
410	req->fd = 1; /* mark request as delayed */
411	continue;
412	}
413	else
414	{
415	if (req->type == REQ_READ)
416	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
417
418	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
419	SvREADONLY_off (req->data);
420
421	if (req->statdata)
422	{
423	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
424	PL_laststatval = req->result;
425	PL_statcache = *(req->statdata);
426	}
427
428	req_invoke (req);
429
430	count++;
431	}
432
433	req_free (req);
434	}
435
436	return count;
437	}	575	}
438		576
439	static void *aio_proc(void *arg);	577	static void *aio_proc(void *arg);
440		578
441	static void start_thread (void)	579	static void start_thread (void)
442	{	580	{
443	sigset_t fullsigset, oldsigset;	581	sigset_t fullsigset, oldsigset;
444	pthread_t tid;
445	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");
446		588
447	pthread_attr_init (&attr);	589	pthread_attr_init (&attr);
448	pthread_attr_setstacksize (&attr, STACKSIZE);	590	pthread_attr_setstacksize (&attr, STACKSIZE);
449	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
450		595
451	sigfillset (&fullsigset);	596	sigfillset (&fullsigset);
		597
		598	LOCK (wrklock);
452	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);	599	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
453		600
454	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)	601	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
455	started++;
456
457	sigprocmask (SIG_SETMASK, &oldsigset, 0);
458	}
459
460	static void req_send (aio_req req)
461	{
462	while (started < wanted && nreqs >= started)
463	start_thread ();
464
465	++nreqs;
466
467	pthread_mutex_lock (&reqlock);
468
469	req->next = 0;
470
471	if (reqe)
472	{	602	{
473	reqe->next = req;	603	wrk->prev = &wrk_first;
474	reqe = req;	604	wrk->next = wrk_first.next;
		605	wrk_first.next->prev = wrk;
		606	wrk_first.next = wrk;
		607	++started;
475	}	608	}
476	else	609	else
477	reqe = reqs = req;	610	free (wrk);
478		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);
479	pthread_cond_signal (&reqwait);	635	pthread_cond_signal (&reqwait);
480	pthread_mutex_unlock (&reqlock);	636	UNLOCK (reqlock);
481		637
482	if (nreqs > max_outstanding)	638	maybe_start_thread ();
483	for (;;)
484	{
485	poll_cb ();
486
487	if (nreqs <= max_outstanding)
488	break;
489
490	poll_wait ();
491	}
492	}	639	}
493		640
494	static void end_thread (void)	641	static void end_thread (void)
495	{	642	{
496	aio_req req;	643	aio_req req;
		644
497	Newz (0, req, 1, aio_cb);	645	Newz (0, req, 1, aio_cb);
		646
498	req->type = REQ_QUIT;	647	req->type = REQ_QUIT;
		648	req->pri = PRI_MAX + PRI_BIAS;
499		649
500	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);
501	}	665	}
502		666
503	static void min_parallel (int nthreads)	667	static void min_parallel (int nthreads)
504	{	668	{
505	if (wanted < nthreads)	669	if (wanted < nthreads)
506	wanted = nthreads;	670	wanted = nthreads;
507	}	671	}
508		672
509	static void max_parallel (int nthreads)	673	static void max_parallel (int nthreads)
510	{	674	{
511	int cur = started;
512
513	if (wanted > nthreads)	675	if (wanted > nthreads)
514	wanted = nthreads;	676	wanted = nthreads;
515		677
516	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)
517	{	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
518	end_thread ();	696	maybe_start_thread ();
519	cur--;	697
		698	FD_ZERO(&rfd);
		699	FD_SET(respipe [0], &rfd);
		700
		701	select (respipe [0] + 1, &rfd, 0, 0, 0);
520	}	702	}
		703	}
521		704
522	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 (;;)
523	{	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
524	poll_wait ();	775	poll_wait ();
525	poll_cb ();	776
		777	++maxreqs;
526	}	778	}
		779
		780	return count;
527	}	781	}
528		782
529	static void create_pipe ()	783	static void create_pipe ()
530	{	784	{
531	if (pipe (respipe))	785	if (pipe (respipe))
…		…
555	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)
556	{	810	{
557	ssize_t res;	811	ssize_t res;
558	off_t ooffset;	812	off_t ooffset;
559		813
560	pthread_mutex_lock (&preadwritelock);	814	LOCK (preadwritelock);
561	ooffset = lseek (fd, 0, SEEK_CUR);	815	ooffset = lseek (fd, 0, SEEK_CUR);
562	lseek (fd, offset, SEEK_SET);	816	lseek (fd, offset, SEEK_SET);
563	res = read (fd, buf, count);	817	res = read (fd, buf, count);
564	lseek (fd, ooffset, SEEK_SET);	818	lseek (fd, ooffset, SEEK_SET);
565	pthread_mutex_unlock (&preadwritelock);	819	UNLOCK (preadwritelock);
566		820
567	return res;	821	return res;
568	}	822	}
569		823
570	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)
571	{	825	{
572	ssize_t res;	826	ssize_t res;
573	off_t ooffset;	827	off_t ooffset;
574		828
575	pthread_mutex_lock (&preadwritelock);	829	LOCK (preadwritelock);
576	ooffset = lseek (fd, 0, SEEK_CUR);	830	ooffset = lseek (fd, 0, SEEK_CUR);
577	lseek (fd, offset, SEEK_SET);	831	lseek (fd, offset, SEEK_SET);
578	res = write (fd, buf, count);	832	res = write (fd, buf, count);
579	lseek (fd, offset, SEEK_SET);	833	lseek (fd, offset, SEEK_SET);
580	pthread_mutex_unlock (&preadwritelock);	834	UNLOCK (preadwritelock);
581		835
582	return res;	836	return res;
583	}	837	}
584	#endif	838	#endif
585		839
586	#if !HAVE_FDATASYNC	840	#if !HAVE_FDATASYNC
587	# define fdatasync fsync	841	# define fdatasync fsync
588	#endif	842	#endif
589		843
590	#if !HAVE_READAHEAD	844	#if !HAVE_READAHEAD
591	# define readahead aio_readahead	845	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
592		846
593	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)
594	{	848	{
595	char readahead_buf[4096];	849	dBUF;
596		850
597	while (count > 0)	851	while (count > 0)
598	{	852	{
599	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);	853	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
600		854
601	pread (fd, readahead_buf, len, offset);	855	pread (fd, aio_buf, len, offset);
602	offset += len;	856	offset += len;
603	count -= len;	857	count -= len;
604	}	858	}
605		859
606	errno = 0;	860	errno = 0;
607	}	861	}
		862
608	#endif	863	#endif
609		864
610	#if !HAVE_READDIR_R	865	#if !HAVE_READDIR_R
611	# define readdir_r aio_readdir_r	866	# define readdir_r aio_readdir_r
612		867
…		…
615	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)
616	{	871	{
617	struct dirent *e;	872	struct dirent *e;
618	int errorno;	873	int errorno;
619		874
620	pthread_mutex_lock (&readdirlock);	875	LOCK (readdirlock);
621		876
622	e = readdir (dirp);	877	e = readdir (dirp);
623	errorno = errno;	878	errorno = errno;
624		879
625	if (e)	880	if (e)
…		…
628	strcpy (ent->d_name, e->d_name);	883	strcpy (ent->d_name, e->d_name);
629	}	884	}
630	else	885	else
631	*res = 0;	886	*res = 0;
632		887
633	pthread_mutex_unlock (&readdirlock);	888	UNLOCK (readdirlock);
634		889
635	errno = errorno;	890	errno = errorno;
636	return e ? 0 : -1;	891	return e ? 0 : -1;
637	}	892	}
638	#endif	893	#endif
639		894
640	/* sendfile always needs emulation */	895	/* sendfile always needs emulation */
641	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)
642	{	897	{
643	ssize_t res;	898	ssize_t res;
644		899
645	if (!count)	900	if (!count)
646	return 0;	901	return 0;
…		…
657	{	912	{
658	off_t sbytes;	913	off_t sbytes;
659	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);	914	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
660		915
661	if (res < 0 && sbytes)	916	if (res < 0 && sbytes)
662	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */	917	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
663	res = sbytes;	918	res = sbytes;
664	}	919	}
665		920
666	# elif __hpux	921	# elif __hpux
667	res = sendfile (ofd, ifd, offset, count, 0, 0);	922	res = sendfile (ofd, ifd, offset, count, 0, 0);
…		…
695	#endif	950	#endif
696	)	951	)
697	)	952	)
698	{	953	{
699	/* emulate sendfile. this is a major pain in the ass */	954	/* emulate sendfile. this is a major pain in the ass */
700	char buf[4096];	955	dBUF;
		956
701	res = 0;	957	res = 0;
702		958
703	while (count)	959	while (count)
704	{	960	{
705	ssize_t cnt;	961	ssize_t cnt;
706		962
707	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);	963	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
708		964
709	if (cnt <= 0)	965	if (cnt <= 0)
710	{	966	{
711	if (cnt && !res) res = -1;	967	if (cnt && !res) res = -1;
712	break;	968	break;
713	}	969	}
714		970
715	cnt = write (ofd, buf, cnt);	971	cnt = write (ofd, aio_buf, cnt);
716		972
717	if (cnt <= 0)	973	if (cnt <= 0)
718	{	974	{
719	if (cnt && !res) res = -1;	975	if (cnt && !res) res = -1;
720	break;	976	break;
…		…
728		984
729	return res;	985	return res;
730	}	986	}
731		987
732	/* read a full directory */	988	/* read a full directory */
733	static int scandir_ (const char *path, void **namesp)	989	static void scandir_ (aio_req req, worker *self)
734	{	990	{
735	DIR *dirp = opendir (path);	991	DIR *dirp;
736	union	992	union
737	{	993	{
738	struct dirent d;	994	struct dirent d;
739	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];	995	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
740	} u;	996	} *u;
741	struct dirent *entp;	997	struct dirent *entp;
742	char *name, *names;	998	char *name, *names;
743	int memlen = 4096;	999	int memlen = 4096;
744	int memofs = 0;	1000	int memofs = 0;
745	int res = 0;	1001	int res = 0;
746	int errorno;	1002	int errorno;
747		1003
748	if (!dirp)	1004	LOCK (wrklock);
749	return -1;	1005	self->dirp = dirp = opendir (req->ptr1);
750		1006	self->dbuf = u = malloc (sizeof (*u));
		1007	req->flags |= FLAG_PTR2_FREE;
751	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);
752		1061
753	for (;;)	1062	for (;;)
754	{	1063	{
755	errno = 0, readdir_r (dirp, &u.d, &entp);	1064	ts.tv_sec = time (0) + IDLE_TIMEOUT;
756		1065
757	if (!entp)	1066	LOCK (reqlock);
758	break;
759
760	name = entp->d_name;
761
762	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
763	{
764	int len = strlen (name) + 1;
765
766	res++;
767
768	while (memofs + len > memlen)
769	{
770	memlen *= 2;
771	names = realloc (names, memlen);
772	if (!names)
773	break;
774	}
775
776	memcpy (names + memofs, name, len);
777	memofs += len;
778	}
779	}
780
781	errorno = errno;
782	closedir (dirp);
783
784	if (errorno)
785	{
786	free (names);
787	errno = errorno;
788	res = -1;
789	}
790
791	*namesp = (void *)names;
792	return res;
793	}
794
795	/*****************************************************************************/
796
797	static void *aio_proc (void *thr_arg)
798	{
799	aio_req req;
800	int type;
801
802	do
803	{
804	pthread_mutex_lock (&reqlock);
805		1067
806	for (;;)	1068	for (;;)
807	{	1069	{
808	req = reqs;	1070	self->req = req = reqq_shift (&req_queue);
809
810	if (reqs)
811	{
812	reqs = reqs->next;
813	if (!reqs) reqe = 0;
814	}
815		1071
816	if (req)	1072	if (req)
817	break;	1073	break;
818		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 */
819	pthread_cond_wait (&reqwait, &reqlock);	1091	pthread_cond_wait (&reqwait, &reqlock);
		1092	ts.tv_sec = time (0) + IDLE_TIMEOUT;
		1093	}
		1094
		1095	--idle;
820	}	1096	}
821		1097
822	pthread_mutex_unlock (&reqlock);	1098	--nready;
		1099
		1100	UNLOCK (reqlock);
823		1101
824	errno = 0; /* strictly unnecessary */	1102	errno = 0; /* strictly unnecessary */
825	type = req->type; /* remember type for QUIT check */
826		1103
827	if (!(req->flags & FLAG_CANCELLED))	1104	if (!(req->flags & FLAG_CANCELLED))
828	switch (type)	1105	switch (req->type)
829	{	1106	{
830	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;
831	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;
832		1109
833	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;
834	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;
835		1112
836	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;
837	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;
838	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;
839		1116
840	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;
841	case REQ_CLOSE: req->result = close (req->fd); break;	1118	case REQ_CLOSE: req->result = close (req->int1); break;
842	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	1119	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
843	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;	1120	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
844	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;	1121	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
845	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;	1122	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
846	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;
847		1126
848	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	1127	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
849	case REQ_FSYNC: req->result = fsync (req->fd); break;	1128	case REQ_FSYNC: req->result = fsync (req->int1); break;
850	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;	1129	case REQ_READDIR: scandir_ (req, self); break;
851		1130
852	case REQ_SLEEP:	1131	case REQ_BUSY:
853	{	1132	{
854	struct timeval tv;	1133	struct timeval tv;
855		1134
856	tv.tv_sec = req->fd;	1135	tv.tv_sec = req->int1;
857	tv.tv_usec = req->fd2;	1136	tv.tv_usec = req->int2;
858		1137
859	req->result = select (0, 0, 0, 0, &tv);	1138	req->result = select (0, 0, 0, 0, &tv);
860	}	1139	}
861		1140
862	case REQ_GROUP:	1141	case REQ_GROUP:
863	case REQ_NOP:	1142	case REQ_NOP:
		1143	break;
		1144
864	case REQ_QUIT:	1145	case REQ_QUIT:
865	break;	1146	goto quit;
866		1147
867	default:	1148	default:
868	req->result = ENOSYS;	1149	req->result = ENOSYS;
869	break;	1150	break;
870	}	1151	}
871		1152
872	req->errorno = errno;	1153	req->errorno = errno;
873		1154
874	pthread_mutex_lock (&reslock);	1155	LOCK (reslock);
875		1156
876	req->next = 0;	1157	++npending;
877		1158
878	if (rese)	1159	if (!reqq_push (&res_queue, req))
879	{
880	rese->next = req;
881	rese = req;
882	}
883	else
884	{
885	rese = ress = req;
886
887	/* write a dummy byte to the pipe so fh becomes ready */	1160	/* write a dummy byte to the pipe so fh becomes ready */
888	write (respipe [1], &respipe, 1);	1161	write (respipe [1], &respipe, 1);
889	}
890		1162
891	pthread_mutex_unlock (&reslock);	1163	self->req = 0;
		1164	worker_clear (self);
		1165
		1166	UNLOCK (reslock);
892	}	1167	}
893	while (type != REQ_QUIT);	1168
		1169	quit:
		1170	LOCK (wrklock);
		1171	worker_free (self);
		1172	UNLOCK (wrklock);
894		1173
895	return 0;	1174	return 0;
896	}	1175	}
897		1176
898	/*****************************************************************************/	1177	/*****************************************************************************/
899		1178
900	static void atfork_prepare (void)	1179	static void atfork_prepare (void)
901	{	1180	{
902	pthread_mutex_lock (&reqlock);	1181	LOCK (wrklock);
903	pthread_mutex_lock (&reslock);	1182	LOCK (reqlock);
		1183	LOCK (reslock);
904	#if !HAVE_PREADWRITE	1184	#if !HAVE_PREADWRITE
905	pthread_mutex_lock (&preadwritelock);	1185	LOCK (preadwritelock);
906	#endif	1186	#endif
907	#if !HAVE_READDIR_R	1187	#if !HAVE_READDIR_R
908	pthread_mutex_lock (&readdirlock);	1188	LOCK (readdirlock);
909	#endif	1189	#endif
910	}	1190	}
911		1191
912	static void atfork_parent (void)	1192	static void atfork_parent (void)
913	{	1193	{
914	#if !HAVE_READDIR_R	1194	#if !HAVE_READDIR_R
915	pthread_mutex_unlock (&readdirlock);	1195	UNLOCK (readdirlock);
916	#endif	1196	#endif
917	#if !HAVE_PREADWRITE	1197	#if !HAVE_PREADWRITE
918	pthread_mutex_unlock (&preadwritelock);	1198	UNLOCK (preadwritelock);
919	#endif	1199	#endif
920	pthread_mutex_unlock (&reslock);	1200	UNLOCK (reslock);
921	pthread_mutex_unlock (&reqlock);	1201	UNLOCK (reqlock);
		1202	UNLOCK (wrklock);
922	}	1203	}
923		1204
924	static void atfork_child (void)	1205	static void atfork_child (void)
925	{	1206	{
926	aio_req prv;	1207	aio_req prv;
927		1208
928	started = 0;	1209	while (prv = reqq_shift (&req_queue))
		1210	req_free (prv);
929		1211
930	while (reqs)	1212	while (prv = reqq_shift (&res_queue))
		1213	req_free (prv);
		1214
		1215	while (wrk_first.next != &wrk_first)
931	{	1216	{
932	prv = reqs;	1217	worker *wrk = wrk_first.next;
933	reqs = prv->next;	1218
		1219	if (wrk->req)
		1220	req_free (wrk->req);
		1221
		1222	worker_clear (wrk);
934	req_free (prv);	1223	worker_free (wrk);
935	}	1224	}
936		1225
937	reqs = reqe = 0;	1226	started = 0;
938		1227	idle = 0;
939	while (ress)	1228	nreqs = 0;
940	{	1229	nready = 0;
941	prv = ress;	1230	npending = 0;
942	ress = prv->next;
943	req_free (prv);
944	}
945
946	ress = rese = 0;
947		1231
948	close (respipe [0]);	1232	close (respipe [0]);
949	close (respipe [1]);	1233	close (respipe [1]);
950	create_pipe ();	1234	create_pipe ();
951		1235
…		…
978	PROTOTYPES: ENABLE	1262	PROTOTYPES: ENABLE
979		1263
980	BOOT:	1264	BOOT:
981	{	1265	{
982	HV *stash = gv_stashpv ("IO::AIO", 1);	1266	HV *stash = gv_stashpv ("IO::AIO", 1);
		1267
983	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	1268	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
984	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	1269	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
985	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));
986		1274
987	create_pipe ();	1275	create_pipe ();
988	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	1276	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
989	}	1277	}
990		1278
991	void	1279	void
992	min_parallel (nthreads)	1280	max_poll_reqs (int nreqs)
993	int nthreads
994	PROTOTYPE: $	1281	PROTOTYPE: $
		1282	CODE:
		1283	max_poll_reqs = nreqs;
995		1284
996	void	1285	void
997	max_parallel (nthreads)	1286	max_poll_time (double nseconds)
998	int nthreads
999	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);
1000		1304
1001	int	1305	int
1002	max_outstanding (nreqs)	1306	max_outstanding (int maxreqs)
1003	int nreqs	1307	PROTOTYPE: $
1004	PROTOTYPE: $
1005	CODE:	1308	CODE:
1006	RETVAL = max_outstanding;	1309	RETVAL = max_outstanding;
1007	max_outstanding = nreqs;	1310	max_outstanding = maxreqs;
		1311	OUTPUT:
		1312	RETVAL
1008		1313
1009	void	1314	void
1010	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	1315	aio_open (pathname,flags,mode,callback=&PL_sv_undef)
1011	SV * pathname	1316	SV8 * pathname
1012	int flags	1317	int flags
1013	int mode	1318	int mode
1014	SV * callback	1319	SV * callback
1015	PROTOTYPE: $$$;$	1320	PROTOTYPE: $$$;$
1016	PPCODE:	1321	PPCODE:
1017	{	1322	{
1018	dREQ;	1323	dREQ;
1019		1324
1020	req->type = REQ_OPEN;	1325	req->type = REQ_OPEN;
1021	req->data = newSVsv (pathname);	1326	req->sv1 = newSVsv (pathname);
1022	req->dataptr = SvPVbyte_nolen (req->data);	1327	req->ptr1 = SvPVbyte_nolen (req->sv1);
1023	req->fd = flags;	1328	req->int1 = flags;
1024	req->mode = mode;	1329	req->mode = mode;
1025		1330
1026	REQ_SEND;	1331	REQ_SEND;
1027	}	1332	}
1028		1333
…		…
1038	PPCODE:	1343	PPCODE:
1039	{	1344	{
1040	dREQ;	1345	dREQ;
1041		1346
1042	req->type = ix;	1347	req->type = ix;
1043	req->fh = newSVsv (fh);	1348	req->fh = newSVsv (fh);
1044	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1349	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1045		1350
1046	REQ_SEND (req);	1351	REQ_SEND (req);
1047	}	1352	}
1048		1353
1049	void	1354	void
1050	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1355	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
1051	SV * fh	1356	SV * fh
1052	UV offset	1357	UV offset
1053	UV length	1358	UV length
1054	SV * data	1359	SV8 * data
1055	UV dataoffset	1360	UV dataoffset
1056	SV * callback	1361	SV * callback
1057	ALIAS:	1362	ALIAS:
1058	aio_read = REQ_READ	1363	aio_read = REQ_READ
1059	aio_write = REQ_WRITE	1364	aio_write = REQ_WRITE
1060	PROTOTYPE: $$$$$;$	1365	PROTOTYPE: $$$$$;$
1061	PPCODE:	1366	PPCODE:
1062	{	1367	{
1063	aio_req req;
1064	STRLEN svlen;	1368	STRLEN svlen;
1065	char *svptr = SvPVbyte (data, svlen);	1369	char *svptr = SvPVbyte (data, svlen);
1066		1370
1067	SvUPGRADE (data, SVt_PV);	1371	SvUPGRADE (data, SVt_PV);
1068	SvPOK_on (data);	1372	SvPOK_on (data);
…		…
1090		1394
1091	{	1395	{
1092	dREQ;	1396	dREQ;
1093		1397
1094	req->type = ix;	1398	req->type = ix;
1095	req->fh = newSVsv (fh);	1399	req->fh = newSVsv (fh);
1096	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1400	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
1097	: IoOFP (sv_2io (fh)));	1401	: IoOFP (sv_2io (fh)));
1098	req->offset = offset;	1402	req->offs = offset;
1099	req->length = length;	1403	req->size = length;
1100	req->data = SvREFCNT_inc (data);	1404	req->sv1 = SvREFCNT_inc (data);
1101	req->dataptr = (char *)svptr + dataoffset;	1405	req->ptr1 = (char *)svptr + dataoffset;
		1406	req->stroffset = dataoffset;
1102		1407
1103	if (!SvREADONLY (data))	1408	if (!SvREADONLY (data))
1104	{	1409	{
1105	SvREADONLY_on (data);	1410	SvREADONLY_on (data);
1106	req->data2ptr = (void *)data;	1411	req->flags |= FLAG_SV1_RO_OFF;
1107	}	1412	}
1108		1413
1109	REQ_SEND;	1414	REQ_SEND;
1110	}	1415	}
		1416	}
		1417
		1418	void
		1419	aio_readlink (path,callback=&PL_sv_undef)
		1420	SV8 * path
		1421	SV * callback
		1422	PROTOTYPE: $$;$
		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;
1111	}	1438	}
1112		1439
1113	void	1440	void
1114	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)
1115	SV * out_fh	1442	SV * out_fh
…		…
1121	PPCODE:	1448	PPCODE:
1122	{	1449	{
1123	dREQ;	1450	dREQ;
1124		1451
1125	req->type = REQ_SENDFILE;	1452	req->type = REQ_SENDFILE;
1126	req->fh = newSVsv (out_fh);	1453	req->fh = newSVsv (out_fh);
1127	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1454	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1128	req->fh2 = newSVsv (in_fh);	1455	req->sv2 = newSVsv (in_fh);
1129	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1456	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1130	req->offset = in_offset;	1457	req->offs = in_offset;
1131	req->length = length;	1458	req->size = length;
1132		1459
1133	REQ_SEND;	1460	REQ_SEND;
1134	}	1461	}
1135		1462
1136	void	1463	void
…		…
1143	PPCODE:	1470	PPCODE:
1144	{	1471	{
1145	dREQ;	1472	dREQ;
1146		1473
1147	req->type = REQ_READAHEAD;	1474	req->type = REQ_READAHEAD;
1148	req->fh = newSVsv (fh);	1475	req->fh = newSVsv (fh);
1149	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1476	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1150	req->offset = offset;	1477	req->offs = offset;
1151	req->length = length;	1478	req->size = length;
1152		1479
1153	REQ_SEND;	1480	REQ_SEND;
1154	}	1481	}
1155		1482
1156	void	1483	void
1157	aio_stat (fh_or_path,callback=&PL_sv_undef)	1484	aio_stat (fh_or_path,callback=&PL_sv_undef)
1158	SV * fh_or_path	1485	SV8 * fh_or_path
1159	SV * callback	1486	SV * callback
1160	ALIAS:	1487	ALIAS:
1161	aio_stat = REQ_STAT	1488	aio_stat = REQ_STAT
1162	aio_lstat = REQ_LSTAT	1489	aio_lstat = REQ_LSTAT
1163	PPCODE:	1490	PPCODE:
1164	{	1491	{
1165	dREQ;	1492	dREQ;
1166		1493
1167	New (0, req->statdata, 1, Stat_t);	1494	req->ptr2 = malloc (sizeof (Stat_t));
1168	if (!req->statdata)	1495	if (!req->ptr2)
1169	{	1496	{
1170	req_free (req);	1497	req_free (req);
1171	croak ("out of memory during aio_req->statdata allocation");	1498	croak ("out of memory during aio_stat statdata allocation");
1172	}	1499	}
		1500
		1501	req->flags |= FLAG_PTR2_FREE;
1173		1502
1174	if (SvPOK (fh_or_path))	1503	if (SvPOK (fh_or_path))
1175	{	1504	{
1176	req->type = ix;	1505	req->type = ix;
1177	req->data = newSVsv (fh_or_path);	1506	req->sv1 = newSVsv (fh_or_path);
1178	req->dataptr = SvPVbyte_nolen (req->data);	1507	req->ptr1 = SvPVbyte_nolen (req->sv1);
1179	}	1508	}
1180	else	1509	else
1181	{	1510	{
1182	req->type = REQ_FSTAT;	1511	req->type = REQ_FSTAT;
1183	req->fh = newSVsv (fh_or_path);	1512	req->fh = newSVsv (fh_or_path);
1184	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1513	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1185	}	1514	}
1186		1515
1187	REQ_SEND;	1516	REQ_SEND;
1188	}	1517	}
1189		1518
1190	void	1519	void
1191	aio_unlink (pathname,callback=&PL_sv_undef)	1520	aio_unlink (pathname,callback=&PL_sv_undef)
1192	SV * pathname	1521	SV8 * pathname
1193	SV * callback	1522	SV * callback
1194	ALIAS:	1523	ALIAS:
1195	aio_unlink = REQ_UNLINK	1524	aio_unlink = REQ_UNLINK
1196	aio_rmdir = REQ_RMDIR	1525	aio_rmdir = REQ_RMDIR
1197	aio_readdir = REQ_READDIR	1526	aio_readdir = REQ_READDIR
1198	PPCODE:	1527	PPCODE:
1199	{	1528	{
1200	dREQ;	1529	dREQ;
1201		1530
1202	req->type = ix;	1531	req->type = ix;
1203	req->data = newSVsv (pathname);	1532	req->sv1 = newSVsv (pathname);
1204	req->dataptr = SvPVbyte_nolen (req->data);	1533	req->ptr1 = SvPVbyte_nolen (req->sv1);
1205		1534
1206	REQ_SEND;	1535	REQ_SEND;
1207	}	1536	}
1208		1537
1209	void	1538	void
1210	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1539	aio_link (oldpath,newpath,callback=&PL_sv_undef)
1211	SV * oldpath	1540	SV8 * oldpath
1212	SV * newpath	1541	SV8 * newpath
1213	SV * callback	1542	SV * callback
1214	ALIAS:	1543	ALIAS:
1215	aio_link = REQ_LINK	1544	aio_link = REQ_LINK
1216	aio_symlink = REQ_SYMLINK	1545	aio_symlink = REQ_SYMLINK
1217	aio_rename = REQ_RENAME	1546	aio_rename = REQ_RENAME
1218	PPCODE:	1547	PPCODE:
1219	{	1548	{
1220	dREQ;	1549	dREQ;
1221		1550
1222	req->type = ix;	1551	req->type = ix;
1223	req->fh = newSVsv (oldpath);	1552	req->fh = newSVsv (oldpath);
1224	req->data2ptr = SvPVbyte_nolen (req->fh);	1553	req->ptr2 = SvPVbyte_nolen (req->fh);
1225	req->data = newSVsv (newpath);	1554	req->sv1 = newSVsv (newpath);
1226	req->dataptr = SvPVbyte_nolen (req->data);	1555	req->ptr1 = SvPVbyte_nolen (req->sv1);
1227		1556
1228	REQ_SEND;	1557	REQ_SEND;
1229	}	1558	}
1230		1559
1231	void	1560	void
1232	aio_sleep (delay,callback=&PL_sv_undef)	1561	aio_mknod (pathname,mode,dev,callback=&PL_sv_undef)
1233	double delay	1562	SV8 * pathname
1234	SV * callback	1563	SV * callback
		1564	UV mode
		1565	UV dev
1235	PPCODE:	1566	PPCODE:
1236	{	1567	{
1237	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	}
1238		1578
		1579	void
		1580	aio_busy (delay,callback=&PL_sv_undef)
		1581	double delay
		1582	SV * callback
		1583	PPCODE:
		1584	{
		1585	dREQ;
		1586
1239	req->type = REQ_SLEEP;	1587	req->type = REQ_BUSY;
1240	req->fd = delay < 0. ? 0 : delay;	1588	req->int1 = delay < 0. ? 0 : delay;
1241	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1589	req->int2 = delay < 0. ? 0 : 1000. * (delay - req->int1);
1242		1590
1243	REQ_SEND;	1591	REQ_SEND;
1244	}	1592	}
1245		1593
1246	void	1594	void
…		…
1250	PPCODE:	1598	PPCODE:
1251	{	1599	{
1252	dREQ;	1600	dREQ;
1253		1601
1254	req->type = REQ_GROUP;	1602	req->type = REQ_GROUP;
		1603
1255	req_send (req);	1604	req_send (req);
1256
1257	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1605	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1258	}	1606	}
1259		1607
1260	void	1608	void
1261	aio_nop (callback=&PL_sv_undef)	1609	aio_nop (callback=&PL_sv_undef)
1262	SV * callback	1610	SV * callback
1263	PPCODE:	1611	PPCODE:
1264	{	1612	{
1265	dREQ;	1613	dREQ;
1266		1614
1267	req->type = REQ_NOP;	1615	req->type = REQ_NOP;
1268		1616
1269	REQ_SEND;	1617	REQ_SEND;
1270	}	1618	}
1271		1619
1272	#if 0	1620	int
1273		1621	aioreq_pri (int pri = 0)
1274	void	1622	PROTOTYPE: ;$
1275	aio_pri (int pri = DEFAULT_PRI)
1276	CODE:	1623	CODE:
		1624	RETVAL = next_pri - PRI_BIAS;
		1625	if (items > 0)
		1626	{
1277	if (pri < PRI_MIN) pri = PRI_MIN;	1627	if (pri < PRI_MIN) pri = PRI_MIN;
1278	if (pri > PRI_MAX) pri = PRI_MAX;	1628	if (pri > PRI_MAX) pri = PRI_MAX;
1279	next_pri = pri + PRI_BIAS;	1629	next_pri = pri + PRI_BIAS;
		1630	}
		1631	OUTPUT:
		1632	RETVAL
1280		1633
1281	#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;
1282		1641
1283	void	1642	void
1284	flush ()	1643	flush ()
1285	PROTOTYPE:	1644	PROTOTYPE:
1286	CODE:	1645	CODE:
…		…
1288	{	1647	{
1289	poll_wait ();	1648	poll_wait ();
1290	poll_cb ();	1649	poll_cb ();
1291	}	1650	}
1292		1651
1293	void	1652	int
1294	poll()	1653	poll()
1295	PROTOTYPE:	1654	PROTOTYPE:
1296	CODE:	1655	CODE:
1297	if (nreqs)	1656	if (nreqs)
1298	{	1657	{
1299	poll_wait ();	1658	poll_wait ();
1300	poll_cb ();	1659	RETVAL = poll_cb ();
1301	}	1660	}
		1661	else
		1662	RETVAL = 0;
		1663	OUTPUT:
		1664	RETVAL
1302		1665
1303	int	1666	int
1304	poll_fileno()	1667	poll_fileno()
1305	PROTOTYPE:	1668	PROTOTYPE:
1306	CODE:	1669	CODE:
…		…
1329	CODE:	1692	CODE:
1330	RETVAL = nreqs;	1693	RETVAL = nreqs;
1331	OUTPUT:	1694	OUTPUT:
1332	RETVAL	1695	RETVAL
1333		1696
		1697	int
		1698	nready()
		1699	PROTOTYPE:
		1700	CODE:
		1701	RETVAL = get_nready ();
		1702	OUTPUT:
		1703	RETVAL
		1704
		1705	int
		1706	npending()
		1707	PROTOTYPE:
		1708	CODE:
		1709	RETVAL = get_npending ();
		1710	OUTPUT:
		1711	RETVAL
		1712
		1713	int
		1714	nthreads()
		1715	PROTOTYPE:
		1716	CODE:
		1717	if (WORDACCESS_UNSAFE) LOCK (wrklock);
		1718	RETVAL = started;
		1719	if (WORDACCESS_UNSAFE) UNLOCK (wrklock);
		1720	OUTPUT:
		1721	RETVAL
		1722
1334	PROTOTYPES: DISABLE	1723	PROTOTYPES: DISABLE
1335		1724
1336	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1725	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1337		1726
1338	void	1727	void
1339	cancel (aio_req_ornot req)	1728	cancel (aio_req_ornot req)
1340	PROTOTYPE:
1341	CODE:	1729	CODE:
1342	req_cancel (req);	1730	req_cancel (req);
1343		1731
1344	void	1732	void
1345	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1733	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
…		…
1354	PPCODE:	1742	PPCODE:
1355	{	1743	{
1356	int i;	1744	int i;
1357	aio_req req;	1745	aio_req req;
1358		1746
1359	if (grp->fd == 2)	1747	if (grp->int1 == 2)
1360	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1748	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1361		1749
1362	for (i = 1; i < items; ++i )	1750	for (i = 1; i < items; ++i )
1363	{	1751	{
1364	if (GIMME_V != G_VOID)	1752	if (GIMME_V != G_VOID)
…		…
1366		1754
1367	req = SvAIO_REQ (ST (i));	1755	req = SvAIO_REQ (ST (i));
1368		1756
1369	if (req)	1757	if (req)
1370	{	1758	{
1371	++grp->length;	1759	++grp->size;
1372	req->grp = grp;	1760	req->grp = grp;
1373		1761
1374	req->grp_prev = 0;	1762	req->grp_prev = 0;
1375	req->grp_next = grp->grp_first;	1763	req->grp_next = grp->grp_first;
1376		1764
…		…
1381	}	1769	}
1382	}	1770	}
1383	}	1771	}
1384		1772
1385	void	1773	void
		1774	cancel_subs (aio_req_ornot req)
		1775	CODE:
		1776	req_cancel_subs (req);
		1777
		1778	void
1386	result (aio_req grp, ...)	1779	result (aio_req grp, ...)
1387	CODE:	1780	CODE:
1388	{	1781	{
1389	int i;	1782	int i;
		1783	AV *av;
		1784
		1785	grp->errorno = errno;
		1786
1390	AV *av = newAV ();	1787	av = newAV ();
1391		1788
1392	for (i = 1; i < items; ++i )	1789	for (i = 1; i < items; ++i )
1393	av_push (av, newSVsv (ST (i)));	1790	av_push (av, newSVsv (ST (i)));
1394		1791
1395	SvREFCNT_dec (grp->data);	1792	SvREFCNT_dec (grp->sv1);
1396	grp->data = (SV *)av;	1793	grp->sv1 = (SV *)av;
1397	}	1794	}
1398		1795
1399	void	1796	void
		1797	errno (aio_req grp, int errorno = errno)
		1798	CODE:
		1799	grp->errorno = errorno;
		1800
		1801	void
1400	feed_limit (aio_req grp, int limit)	1802	limit (aio_req grp, int limit)
1401	CODE:	1803	CODE:
1402	grp->fd2 = limit;	1804	grp->int2 = limit;
1403	aio_grp_feed (grp);	1805	aio_grp_feed (grp);
1404		1806
1405	void	1807	void
1406	feed (aio_req grp, SV *callback=&PL_sv_undef)	1808	feed (aio_req grp, SV *callback=&PL_sv_undef)
1407	CODE:	1809	CODE:
1408	{	1810	{
1409	SvREFCNT_dec (grp->fh2);	1811	SvREFCNT_dec (grp->sv2);
1410	grp->fh2 = newSVsv (callback);	1812	grp->sv2 = newSVsv (callback);
1411		1813
1412	if (grp->fd2 <= 0)	1814	if (grp->int2 <= 0)
1413	grp->fd2 = 2;	1815	grp->int2 = 2;
1414		1816
1415	aio_grp_feed (grp);	1817	aio_grp_feed (grp);
1416	}	1818	}
1417		1819

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