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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.38 by root, Sun Aug 28 10:51:33 2005 UTC vs.
Revision 1.78 by root, Thu Oct 26 14:35:34 2006 UTC

		1	/* solaris */
		2	#define _POSIX_PTHREAD_SEMANTICS 1
		3
		4	#if __linux && !defined(_GNU_SOURCE)
		5	# define _GNU_SOURCE
		6	#endif
		7
		8	/* just in case */
1	#define _REENTRANT 1	9	#define _REENTRANT 1
		10
2	#include <errno.h>	11	#include <errno.h>
3		12
4	#include "EXTERN.h"	13	#include "EXTERN.h"
5	#include "perl.h"	14	#include "perl.h"
6	#include "XSUB.h"	15	#include "XSUB.h"
…		…
8	#include "autoconf/config.h"	17	#include "autoconf/config.h"
9		18
10	#include <pthread.h>	19	#include <pthread.h>
11		20
12	#include <stddef.h>	21	#include <stddef.h>
		22	#include <errno.h>
		23	#include <sys/time.h>
		24	#include <sys/select.h>
13	#include <sys/types.h>	25	#include <sys/types.h>
14	#include <sys/stat.h>	26	#include <sys/stat.h>
15	#include <limits.h>	27	#include <limits.h>
16	#include <unistd.h>	28	#include <unistd.h>
17	#include <fcntl.h>	29	#include <fcntl.h>
…		…
31	# else	43	# else
32	# error sendfile support requested but not available	44	# error sendfile support requested but not available
33	# endif	45	# endif
34	#endif	46	#endif
35		47
		48	/* used for struct dirent, AIX doesn't provide it */
		49	#ifndef NAME_MAX
		50	# define NAME_MAX 4096
		51	#endif
		52
		53	#ifndef PTHREAD_STACK_MIN
		54	/* care for broken platforms, e.g. windows */
		55	# define PTHREAD_STACK_MIN 16384
		56	#endif
		57
36	#if __ia64	58	#if __ia64
37	# define STACKSIZE 65536	59	# define STACKSIZE 65536
		60	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
		61	# define STACKSIZE PTHREAD_STACK_MIN
38	#else	62	#else
39	# define STACKSIZE 8192	63	# define STACKSIZE 16384
40	#endif	64	#endif
		65
		66	/* buffer size for various temporary buffers */
		67	#define AIO_BUFSIZE 65536
		68
		69	#define dBUF \
		70	char *aio_buf; \
		71	LOCK (wrklock); \
		72	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
		73	UNLOCK (wrklock); \
		74	if (!aio_buf) \
		75	return -1;
41		76
42	enum {	77	enum {
43	REQ_QUIT,	78	REQ_QUIT,
44	REQ_OPEN, REQ_CLOSE,	79	REQ_OPEN, REQ_CLOSE,
45	REQ_READ, REQ_WRITE, REQ_READAHEAD,	80	REQ_READ, REQ_WRITE, REQ_READAHEAD,
46	REQ_SENDFILE,	81	REQ_SENDFILE,
47	REQ_STAT, REQ_LSTAT, REQ_FSTAT,	82	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
48	REQ_FSYNC, REQ_FDATASYNC,	83	REQ_FSYNC, REQ_FDATASYNC,
49	REQ_UNLINK, REQ_RMDIR,	84	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
50	REQ_READDIR,	85	REQ_READDIR,
51	REQ_SYMLINK,	86	REQ_LINK, REQ_SYMLINK,
		87	REQ_GROUP, REQ_NOP,
		88	REQ_BUSY,
52	};	89	};
53		90
		91	#define AIO_REQ_KLASS "IO::AIO::REQ"
		92	#define AIO_GRP_KLASS "IO::AIO::GRP"
		93
54	typedef struct aio_cb {	94	typedef struct aio_cb
		95	{
55	struct aio_cb *volatile next;	96	struct aio_cb *volatile next;
56		97
57	int type;	98	SV *data, *callback;
58		99	SV *fh, *fh2;
59	/* should receive a cleanup, with unions */	100	void *dataptr, *data2ptr;
60	int fd, fd2;	101	Stat_t *statdata;
61	off_t offset;	102	off_t offset;
62	size_t length;	103	size_t length;
63	ssize_t result;	104	ssize_t result;
		105
		106	STRLEN dataoffset;
		107	int type;
		108	int fd, fd2;
		109	int errorno;
64	mode_t mode; /* open */	110	mode_t mode; /* open */
65	int errorno;
66	SV *data, *callback;
67	SV *fh, *fh2;
68	void *dataptr, *data2ptr;
69	STRLEN dataoffset;
70		111
71	Stat_t *statdata;	112	unsigned char flags;
		113	unsigned char pri;
		114
		115	SV *self; /* the perl counterpart of this request, if any */
		116	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
72	} aio_cb;	117	} aio_cb;
73		118
		119	enum {
		120	FLAG_CANCELLED = 0x01,
		121	};
		122
74	typedef aio_cb *aio_req;	123	typedef aio_cb *aio_req;
		124	typedef aio_cb *aio_req_ornot;
75		125
		126	enum {
		127	PRI_MIN = -4,
		128	PRI_MAX = 4,
		129
		130	DEFAULT_PRI = 0,
		131	PRI_BIAS = -PRI_MIN,
		132	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
		133	};
		134
		135	static int next_pri = DEFAULT_PRI + PRI_BIAS;
		136
76	static int started, wanted;	137	static unsigned int started, wanted;
77	static volatile int nreqs;	138	static volatile unsigned int nreqs;
78	static int max_outstanding = 1<<30;	139	static volatile unsigned int max_outstanding = 0xffffffff;
79	static int respipe [2];	140	static int respipe [2];
80		141
		142	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
		143	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
		144	#else
		145	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
		146	#endif
		147
		148	#define LOCK(mutex) pthread_mutex_lock (&(mutex))
		149	#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
		150
		151	/* worker threads management */
		152	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
		153
		154	typedef struct worker {
		155	/* locked by wrklock */
		156	struct worker *prev, *next;
		157
		158	pthread_t tid;
		159
		160	/* locked by reslock, reqlock or wrklock */
		161	aio_req req; /* currently processed request */
		162	void *dbuf;
		163	DIR *dirp;
		164	} worker;
		165
		166	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
		167
		168	static void worker_clear (worker *wrk)
		169	{
		170	if (wrk->dirp)
		171	{
		172	closedir (wrk->dirp);
		173	wrk->dirp = 0;
		174	}
		175
		176	if (wrk->dbuf)
		177	{
		178	free (wrk->dbuf);
		179	wrk->dbuf = 0;
		180	}
		181	}
		182
		183	static void worker_free (worker *wrk)
		184	{
		185	wrk->next->prev = wrk->prev;
		186	wrk->prev->next = wrk->next;
		187
		188	free (wrk);
		189	}
		190
81	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	191	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
82	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;	192	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
83	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	193	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
84		194
85	static volatile aio_req reqs, reqe; /* queue start, queue end */	195	/*
86	static volatile aio_req ress, rese; /* queue start, queue end */	196	* a somewhat faster data structure might be nice, but
		197	* with 8 priorities this actually needs <20 insns
		198	* per shift, the most expensive operation.
		199	*/
		200	typedef struct {
		201	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
		202	int size;
		203	} reqq;
87		204
		205	static reqq req_queue;
		206	static reqq res_queue;
		207
		208	int reqq_push (reqq *q, aio_req req)
		209	{
		210	int pri = req->pri;
		211	req->next = 0;
		212
		213	if (q->qe[pri])
		214	{
		215	q->qe[pri]->next = req;
		216	q->qe[pri] = req;
		217	}
		218	else
		219	q->qe[pri] = q->qs[pri] = req;
		220
		221	return q->size++;
		222	}
		223
		224	aio_req reqq_shift (reqq *q)
		225	{
		226	int pri;
		227
		228	if (!q->size)
		229	return 0;
		230
		231	--q->size;
		232
		233	for (pri = NUM_PRI; pri--; )
		234	{
		235	aio_req req = q->qs[pri];
		236
		237	if (req)
		238	{
		239	if (!(q->qs[pri] = req->next))
		240	q->qe[pri] = 0;
		241
		242	return req;
		243	}
		244	}
		245
		246	abort ();
		247	}
		248
		249	static int poll_cb (int max);
		250	static void req_invoke (aio_req req);
88	static void free_req (aio_req req)	251	static void req_free (aio_req req);
89	{	252	static void req_cancel (aio_req req);
90	if (req->data)
91	SvREFCNT_dec (req->data);
92		253
		254	/* must be called at most once */
		255	static SV *req_sv (aio_req req, const char *klass)
		256	{
93	if (req->fh)	257	if (!req->self)
94	SvREFCNT_dec (req->fh);	258	{
		259	req->self = (SV *)newHV ();
		260	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
		261	}
95		262
96	if (req->fh2)	263	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));
		264	}
		265
		266	static aio_req SvAIO_REQ (SV *sv)
		267	{
		268	MAGIC *mg;
		269
		270	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))
		271	croak ("object of class " AIO_REQ_KLASS " expected");
		272
		273	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
		274
		275	return mg ? (aio_req)mg->mg_ptr : 0;
		276	}
		277
		278	static void aio_grp_feed (aio_req grp)
		279	{
		280	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))
		281	{
		282	int old_len = grp->length;
		283
		284	if (grp->fh2 && SvOK (grp->fh2))
		285	{
		286	dSP;
		287
		288	ENTER;
		289	SAVETMPS;
		290	PUSHMARK (SP);
		291	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
		292	PUTBACK;
		293	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);
		294	SPAGAIN;
		295	FREETMPS;
		296	LEAVE;
		297	}
		298
		299	/* stop if no progress has been made */
		300	if (old_len == grp->length)
		301	{
97	SvREFCNT_dec (req->fh2);	302	SvREFCNT_dec (grp->fh2);
98		303	grp->fh2 = 0;
99	if (req->statdata)	304	break;
100	Safefree (req->statdata);	305	}
101
102	if (req->callback)
103	SvREFCNT_dec (req->callback);
104
105	if (req->type == REQ_READDIR && req->result >= 0)
106	free (req->data2ptr);
107
108	Safefree (req);
109	}
110
111	static void
112	poll_wait ()
113	{
114	if (nreqs && !ress)
115	{	306	}
		307	}
		308
		309	static void aio_grp_dec (aio_req grp)
		310	{
		311	--grp->length;
		312
		313	/* call feeder, if applicable */
		314	aio_grp_feed (grp);
		315
		316	/* finish, if done */
		317	if (!grp->length && grp->fd)
		318	{
		319	req_invoke (grp);
		320	req_free (grp);
		321	}
		322	}
		323
		324	static void poll_wait ()
		325	{
116	fd_set rfd;	326	fd_set rfd;
		327
		328	while (nreqs)
		329	{
		330	int size;
		331	#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
		332	LOCK (reslock);
		333	#endif
		334	size = res_queue.size;
		335	#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
		336	UNLOCK (reslock);
		337	#endif
		338
		339	if (size)
		340	return;
		341
117	FD_ZERO(&rfd);	342	FD_ZERO(&rfd);
118	FD_SET(respipe [0], &rfd);	343	FD_SET(respipe [0], &rfd);
119		344
120	select (respipe [0] + 1, &rfd, 0, 0, 0);	345	select (respipe [0] + 1, &rfd, 0, 0, 0);
121	}	346	}
122	}	347	}
123		348
124	static int	349	static void req_invoke (aio_req req)
125	poll_cb ()	350	{
		351	dSP;
		352
		353	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
		354	{
		355	errno = req->errorno;
		356
		357	ENTER;
		358	SAVETMPS;
		359	PUSHMARK (SP);
		360	EXTEND (SP, 1);
		361
		362	switch (req->type)
		363	{
		364	case REQ_READDIR:
		365	{
		366	SV *rv = &PL_sv_undef;
		367
		368	if (req->result >= 0)
		369	{
		370	int i;
		371	char *buf = req->data2ptr;
		372	AV *av = newAV ();
		373
		374	av_extend (av, req->result - 1);
		375
		376	for (i = 0; i < req->result; ++i)
		377	{
		378	SV *sv = newSVpv (buf, 0);
		379
		380	av_store (av, i, sv);
		381	buf += SvCUR (sv) + 1;
		382	}
		383
		384	rv = sv_2mortal (newRV_noinc ((SV *)av));
		385	}
		386
		387	PUSHs (rv);
		388	}
		389	break;
		390
		391	case REQ_OPEN:
		392	{
		393	/* convert fd to fh */
		394	SV *fh;
		395
		396	PUSHs (sv_2mortal (newSViv (req->result)));
		397	PUTBACK;
		398	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
		399	SPAGAIN;
		400
		401	fh = SvREFCNT_inc (POPs);
		402
		403	PUSHMARK (SP);
		404	XPUSHs (sv_2mortal (fh));
		405	}
		406	break;
		407
		408	case REQ_GROUP:
		409	req->fd = 2; /* mark group as finished */
		410
		411	if (req->data)
		412	{
		413	int i;
		414	AV *av = (AV *)req->data;
		415
		416	EXTEND (SP, AvFILL (av) + 1);
		417	for (i = 0; i <= AvFILL (av); ++i)
		418	PUSHs (*av_fetch (av, i, 0));
		419	}
		420	break;
		421
		422	case REQ_NOP:
		423	case REQ_BUSY:
		424	break;
		425
		426	default:
		427	PUSHs (sv_2mortal (newSViv (req->result)));
		428	break;
		429	}
		430
		431
		432	PUTBACK;
		433	call_sv (req->callback, G_VOID | G_EVAL);
		434	SPAGAIN;
		435
		436	FREETMPS;
		437	LEAVE;
		438	}
		439
		440	if (req->grp)
		441	{
		442	aio_req grp = req->grp;
		443
		444	/* unlink request */
		445	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
		446	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
		447
		448	if (grp->grp_first == req)
		449	grp->grp_first = req->grp_next;
		450
		451	aio_grp_dec (grp);
		452	}
		453
		454	if (SvTRUE (ERRSV))
		455	{
		456	req_free (req);
		457	croak (0);
		458	}
		459	}
		460
		461	static void req_free (aio_req req)
		462	{
		463	if (req->self)
		464	{
		465	sv_unmagic (req->self, PERL_MAGIC_ext);
		466	SvREFCNT_dec (req->self);
		467	}
		468
		469	SvREFCNT_dec (req->data);
		470	SvREFCNT_dec (req->fh);
		471	SvREFCNT_dec (req->fh2);
		472	SvREFCNT_dec (req->callback);
		473	Safefree (req->statdata);
		474
		475	if (req->type == REQ_READDIR)
		476	free (req->data2ptr);
		477
		478	Safefree (req);
		479	}
		480
		481	static void req_cancel_subs (aio_req grp)
		482	{
		483	aio_req sub;
		484
		485	if (grp->type != REQ_GROUP)
		486	return;
		487
		488	SvREFCNT_dec (grp->fh2);
		489	grp->fh2 = 0;
		490
		491	for (sub = grp->grp_first; sub; sub = sub->grp_next)
		492	req_cancel (sub);
		493	}
		494
		495	static void req_cancel (aio_req req)
		496	{
		497	req->flags |= FLAG_CANCELLED;
		498
		499	req_cancel_subs (req);
		500	}
		501
		502	static int poll_cb (int max)
126	{	503	{
127	dSP;	504	dSP;
128	int count = 0;	505	int count = 0;
129	int do_croak = 0;	506	int do_croak = 0;
130	aio_req req;	507	aio_req req;
131		508
132	for (;;)	509	for (;;)
133	{	510	{
134	pthread_mutex_lock (&reslock);	511	while (max <= 0 || count < max)
135	req = ress;
136
137	if (req)
138	{	512	{
139	ress = req->next;	513	LOCK (reslock);
		514	req = reqq_shift (&res_queue);
140		515
141	if (!ress)	516	if (req)
142	{	517	{
		518	if (!res_queue.size)
		519	{
143	/* read any signals sent by the worker threads */	520	/* read any signals sent by the worker threads */
144	char buf [32];	521	char buf [32];
145	while (read (respipe [0], buf, 32) == 32)	522	while (read (respipe [0], buf, 32) == 32)
		523	;
146	;	524	}
147
148	rese = 0;
149	}	525	}
150	}
151		526
152	pthread_mutex_unlock (&reslock);	527	UNLOCK (reslock);
153		528
154	if (!req)	529	if (!req)
155	break;	530	break;
156		531
157	nreqs--;	532	--nreqs;
158		533
159	if (req->type == REQ_QUIT)	534	if (req->type == REQ_QUIT)
160	started--;	535	--started;
161	else	536	else if (req->type == REQ_GROUP && req->length)
162	{
163	int errorno = errno;
164	errno = req->errorno;
165
166	if (req->type == REQ_READ)
167	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
168
169	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
170	SvREADONLY_off (req->data);
171
172	if (req->statdata)
173	{	537	{
174	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	538	req->fd = 1; /* mark request as delayed */
175	PL_laststatval = req->result;	539	continue;
176	PL_statcache = *(req->statdata);
177	}
178
179	ENTER;
180	PUSHMARK (SP);
181
182	if (req->type == REQ_READDIR)
183	{
184	SV *rv = &PL_sv_undef;
185
186	if (req->result >= 0)
187	{
188	char *buf = req->data2ptr;
189	AV *av = newAV ();
190
191	while (req->result)
192	{
193	SV *sv = newSVpv (buf, 0);
194
195	av_push (av, sv);
196	buf += SvCUR (sv) + 1;
197	req->result--;
198	}
199
200	rv = sv_2mortal (newRV_noinc ((SV *)av));
201	}
202
203	XPUSHs (rv);
204	}	540	}
205	else	541	else
206	{	542	{
207	XPUSHs (sv_2mortal (newSViv (req->result)));
208
209	if (req->type == REQ_OPEN)	543	if (req->type == REQ_READ)
		544	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
		545
		546	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
		547	SvREADONLY_off (req->data);
		548
		549	if (req->statdata)
210	{	550	{
211	/* convert fd to fh */	551	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
212	SV *fh;	552	PL_laststatval = req->result;
213		553	PL_statcache = *(req->statdata);
214	PUTBACK;
215	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
216	SPAGAIN;
217
218	fh = SvREFCNT_inc (POPs);
219
220	PUSHMARK (SP);
221	XPUSHs (sv_2mortal (fh));
222	}	554	}
		555
		556	req_invoke (req);
		557
		558	count++;
223	}	559	}
224		560
225	if (SvOK (req->callback))	561	req_free (req);
226	{
227	PUTBACK;
228	call_sv (req->callback, G_VOID | G_EVAL);
229	SPAGAIN;
230
231	if (SvTRUE (ERRSV))
232	{
233	free_req (req);
234	croak (0);
235	}
236	}
237
238	LEAVE;
239
240	errno = errorno;
241	count++;
242	}	562	}
243		563
244	free_req (req);	564	if (nreqs <= max_outstanding)
		565	break;
		566
		567	poll_wait ();
		568
		569	max = 0;
245	}	570	}
246		571
247	return count;	572	return count;
248	}	573	}
249		574
250	static void *aio_proc(void *arg);	575	static void *aio_proc(void *arg);
251		576
252	static void
253	start_thread (void)	577	static void start_thread (void)
254	{	578	{
255	sigset_t fullsigset, oldsigset;	579	sigset_t fullsigset, oldsigset;
256	pthread_t tid;
257	pthread_attr_t attr;	580	pthread_attr_t attr;
		581
		582	worker *wrk = calloc (1, sizeof (worker));
		583
		584	if (!wrk)
		585	croak ("unable to allocate worker thread data");
258		586
259	pthread_attr_init (&attr);	587	pthread_attr_init (&attr);
260	pthread_attr_setstacksize (&attr, STACKSIZE);	588	pthread_attr_setstacksize (&attr, STACKSIZE);
261	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);	589	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
262		590
263	sigfillset (&fullsigset);	591	sigfillset (&fullsigset);
		592
		593	LOCK (wrklock);
264	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);	594	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
265		595
266	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)	596	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
		597	{
		598	wrk->prev = &wrk_first;
		599	wrk->next = wrk_first.next;
		600	wrk_first.next->prev = wrk;
		601	wrk_first.next = wrk;
267	started++;	602	++started;
		603	}
		604	else
		605	free (wrk);
268		606
269	sigprocmask (SIG_SETMASK, &oldsigset, 0);	607	sigprocmask (SIG_SETMASK, &oldsigset, 0);
		608	UNLOCK (wrklock);
270	}	609	}
271		610
272	static void	611	static void req_send (aio_req req)
273	send_req (aio_req req)
274	{	612	{
275	while (started < wanted && nreqs >= started)	613	while (started < wanted && nreqs >= started)
276	start_thread ();	614	start_thread ();
277		615
278	nreqs++;	616	++nreqs;
279		617
280	pthread_mutex_lock (&reqlock);	618	LOCK (reqlock);
281		619	reqq_push (&req_queue, req);
282	req->next = 0;
283
284	if (reqe)
285	{
286	reqe->next = req;
287	reqe = req;
288	}
289	else
290	reqe = reqs = req;
291
292	pthread_cond_signal (&reqwait);	620	pthread_cond_signal (&reqwait);
293	pthread_mutex_unlock (&reqlock);	621	UNLOCK (reqlock);
294
295	if (nreqs > max_outstanding)
296	for (;;)
297	{
298	poll_cb ();
299
300	if (nreqs <= max_outstanding)
301	break;
302
303	poll_wait ();
304	}
305	}	622	}
306		623
307	static void	624	static void end_thread (void)
308	end_thread (void)
309	{	625	{
310	aio_req req;	626	aio_req req;
		627
311	Newz (0, req, 1, aio_cb);	628	Newz (0, req, 1, aio_cb);
		629
312	req->type = REQ_QUIT;	630	req->type = REQ_QUIT;
		631	req->pri = PRI_MAX + PRI_BIAS;
313		632
314	send_req (req);	633	req_send (req);
315	}	634	}
316		635
317	static void min_parallel (int nthreads)	636	static void min_parallel (int nthreads)
318	{	637	{
319	if (wanted < nthreads)	638	if (wanted < nthreads)
…		…
334	}	653	}
335		654
336	while (started > wanted)	655	while (started > wanted)
337	{	656	{
338	poll_wait ();	657	poll_wait ();
339	poll_cb ();	658	poll_cb (0);
340	}	659	}
341	}	660	}
342		661
343	static void create_pipe ()	662	static void create_pipe ()
344	{	663	{
…		…
364	* normal read/write by using a mutex. slows down execution a lot,	683	* normal read/write by using a mutex. slows down execution a lot,
365	* but that's your problem, not mine.	684	* but that's your problem, not mine.
366	*/	685	*/
367	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;	686	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
368		687
369	static ssize_t	688	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
370	pread (int fd, void *buf, size_t count, off_t offset)
371	{	689	{
372	ssize_t res;	690	ssize_t res;
373	off_t ooffset;	691	off_t ooffset;
374		692
375	pthread_mutex_lock (&preadwritelock);	693	LOCK (preadwritelock);
376	ooffset = lseek (fd, 0, SEEK_CUR);	694	ooffset = lseek (fd, 0, SEEK_CUR);
377	lseek (fd, offset, SEEK_SET);	695	lseek (fd, offset, SEEK_SET);
378	res = read (fd, buf, count);	696	res = read (fd, buf, count);
379	lseek (fd, ooffset, SEEK_SET);	697	lseek (fd, ooffset, SEEK_SET);
380	pthread_mutex_unlock (&preadwritelock);	698	UNLOCK (preadwritelock);
381		699
382	return res;	700	return res;
383	}	701	}
384		702
385	static ssize_t
386	pwrite (int fd, void *buf, size_t count, off_t offset)	703	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
387	{	704	{
388	ssize_t res;	705	ssize_t res;
389	off_t ooffset;	706	off_t ooffset;
390		707
391	pthread_mutex_lock (&preadwritelock);	708	LOCK (preadwritelock);
392	ooffset = lseek (fd, 0, SEEK_CUR);	709	ooffset = lseek (fd, 0, SEEK_CUR);
393	lseek (fd, offset, SEEK_SET);	710	lseek (fd, offset, SEEK_SET);
394	res = write (fd, buf, count);	711	res = write (fd, buf, count);
395	lseek (fd, offset, SEEK_SET);	712	lseek (fd, offset, SEEK_SET);
396	pthread_mutex_unlock (&preadwritelock);	713	UNLOCK (preadwritelock);
397		714
398	return res;	715	return res;
399	}	716	}
400	#endif	717	#endif
401		718
402	#if !HAVE_FDATASYNC	719	#if !HAVE_FDATASYNC
403	# define fdatasync fsync	720	# define fdatasync fsync
404	#endif	721	#endif
405		722
406	#if !HAVE_READAHEAD	723	#if !HAVE_READAHEAD
407	# define readahead aio_readahead	724	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
408		725
409	static ssize_t	726	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
410	readahead (int fd, off_t offset, size_t count)
411	{	727	{
412	char readahead_buf[4096];	728	dBUF;
413		729
414	while (count > 0)	730	while (count > 0)
415	{	731	{
416	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);	732	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
417		733
418	pread (fd, readahead_buf, len, offset);	734	pread (fd, aio_buf, len, offset);
419	offset += len;	735	offset += len;
420	count -= len;	736	count -= len;
421	}	737	}
422		738
423	errno = 0;	739	errno = 0;
424	}	740	}
		741
425	#endif	742	#endif
426		743
427	#if !HAVE_READDIR_R	744	#if !HAVE_READDIR_R
428	# define readdir_r aio_readdir_r	745	# define readdir_r aio_readdir_r
429		746
430	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;	747	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
431		748
432	static int
433	readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)	749	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
434	{	750	{
435	struct dirent *e;	751	struct dirent *e;
436	int errorno;	752	int errorno;
437		753
438	pthread_mutex_lock (&readdirlock);	754	LOCK (readdirlock);
439		755
440	e = readdir (dirp);	756	e = readdir (dirp);
441	errorno = errno;	757	errorno = errno;
442		758
443	if (e)	759	if (e)
…		…
446	strcpy (ent->d_name, e->d_name);	762	strcpy (ent->d_name, e->d_name);
447	}	763	}
448	else	764	else
449	*res = 0;	765	*res = 0;
450		766
451	pthread_mutex_unlock (&readdirlock);	767	UNLOCK (readdirlock);
452		768
453	errno = errorno;	769	errno = errorno;
454	return e ? 0 : -1;	770	return e ? 0 : -1;
455	}	771	}
456	#endif	772	#endif
457		773
458	/* sendfile always needs emulation */	774	/* sendfile always needs emulation */
459	static ssize_t
460	sendfile_ (int ofd, int ifd, off_t offset, size_t count)	775	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
461	{	776	{
462	ssize_t res;	777	ssize_t res;
463		778
464	if (!count)	779	if (!count)
465	return 0;	780	return 0;
…		…
476	{	791	{
477	off_t sbytes;	792	off_t sbytes;
478	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);	793	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
479		794
480	if (res < 0 && sbytes)	795	if (res < 0 && sbytes)
481	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */	796	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
482	res = sbytes;	797	res = sbytes;
483	}	798	}
484		799
485	# elif __hpux	800	# elif __hpux
486	res = sendfile (ofd, ifd, offset, count, 0, 0);	801	res = sendfile (ofd, ifd, offset, count, 0, 0);
…		…
514	#endif	829	#endif
515	)	830	)
516	)	831	)
517	{	832	{
518	/* emulate sendfile. this is a major pain in the ass */	833	/* emulate sendfile. this is a major pain in the ass */
519	char buf[4096];	834	dBUF;
		835
520	res = 0;	836	res = 0;
521		837
522	while (count)	838	while (count)
523	{	839	{
524	ssize_t cnt;	840	ssize_t cnt;
525		841
526	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);	842	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
527		843
528	if (cnt <= 0)	844	if (cnt <= 0)
529	{	845	{
530	if (cnt && !res) res = -1;	846	if (cnt && !res) res = -1;
531	break;	847	break;
532	}	848	}
533		849
534	cnt = write (ofd, buf, cnt);	850	cnt = write (ofd, aio_buf, cnt);
535		851
536	if (cnt <= 0)	852	if (cnt <= 0)
537	{	853	{
538	if (cnt && !res) res = -1;	854	if (cnt && !res) res = -1;
539	break;	855	break;
…		…
547		863
548	return res;	864	return res;
549	}	865	}
550		866
551	/* read a full directory */	867	/* read a full directory */
552	static int	868	static void scandir_ (aio_req req, worker *self)
553	scandir_ (const char *path, void **namesp)
554	{	869	{
555	DIR *dirp = opendir (path);	870	DIR *dirp;
556	union	871	union
557	{	872	{
558	struct dirent d;	873	struct dirent d;
559	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];	874	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
560	} u;	875	} *u;
561	struct dirent *entp;	876	struct dirent *entp;
562	char *name, *names;	877	char *name, *names;
563	int memlen = 4096;	878	int memlen = 4096;
564	int memofs = 0;	879	int memofs = 0;
565	int res = 0;	880	int res = 0;
566	int errorno;	881	int errorno;
567		882
568	if (!dirp)	883	LOCK (wrklock);
569	return -1;	884	self->dirp = dirp = opendir (req->dataptr);
570		885	self->dbuf = u = malloc (sizeof (*u));
571	names = malloc (memlen);	886	req->data2ptr = names = malloc (memlen);
		887	UNLOCK (wrklock);
572		888
		889	if (dirp && u && names)
573	for (;;)	890	for (;;)
574	{	891	{
		892	errno = 0;
575	errno = 0, readdir_r (dirp, &u.d, &entp);	893	readdir_r (dirp, &u->d, &entp);
576		894
577	if (!entp)	895	if (!entp)
578	break;	896	break;
579		897
580	name = entp->d_name;	898	name = entp->d_name;
581		899
582	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))	900	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
583	{	901	{
584	int len = strlen (name) + 1;	902	int len = strlen (name) + 1;
585		903
586	res++;	904	res++;
587		905
588	while (memofs + len > memlen)	906	while (memofs + len > memlen)
589	{	907	{
590	memlen *= 2;	908	memlen *= 2;
		909	LOCK (wrklock);
591	names = realloc (names, memlen);	910	req->data2ptr = names = realloc (names, memlen);
		911	UNLOCK (wrklock);
		912
592	if (!names)	913	if (!names)
593	break;	914	break;
594	}	915	}
595		916
596	memcpy (names + memofs, name, len);	917	memcpy (names + memofs, name, len);
597	memofs += len;	918	memofs += len;
598	}	919	}
599	}	920	}
600		921
601	errorno = errno;
602	closedir (dirp);
603
604	if (errorno)	922	if (errno)
605	{
606	free (names);
607	errno = errorno;
608	res = -1;	923	res = -1;
609	}	924
610		925	req->result = res;
611	*namesp = (void *)names;
612	return res;
613	}	926	}
614		927
615	/*****************************************************************************/	928	/*****************************************************************************/
616		929
617	static void *
618	aio_proc (void *thr_arg)	930	static void *aio_proc (void *thr_arg)
619	{	931	{
620	aio_req req;	932	aio_req req;
621	int type;	933	int type;
		934	worker *self = (worker *)thr_arg;
622		935
623	do	936	do
624	{	937	{
625	pthread_mutex_lock (&reqlock);	938	LOCK (reqlock);
626		939
627	for (;;)	940	for (;;)
628	{	941	{
629	req = reqs;	942	self->req = req = reqq_shift (&req_queue);
630
631	if (reqs)
632	{
633	reqs = reqs->next;
634	if (!reqs) reqe = 0;
635	}
636		943
637	if (req)	944	if (req)
638	break;	945	break;
639		946
640	pthread_cond_wait (&reqwait, &reqlock);	947	pthread_cond_wait (&reqwait, &reqlock);
641	}	948	}
642		949
643	pthread_mutex_unlock (&reqlock);	950	UNLOCK (reqlock);
644		951
645	errno = 0; /* strictly unnecessary */	952	errno = 0; /* strictly unnecessary */
		953	type = req->type; /* remember type for QUIT check */
646		954
647	type = req->type;	955	if (!(req->flags & FLAG_CANCELLED))
648
649	switch (type)	956	switch (type)
650	{	957	{
651	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;	958	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
652	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;	959	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
653		960
654	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	961	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
655	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;	962	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length, self); break;
656		963
657	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	964	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
658	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	965	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
659	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	966	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
660		967
661	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;	968	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
662	case REQ_CLOSE: req->result = close (req->fd); break;	969	case REQ_CLOSE: req->result = close (req->fd); break;
663	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	970	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
664	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;	971	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
		972	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
		973	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
665	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;	974	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
666		975
667	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	976	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
668	case REQ_FSYNC: req->result = fsync (req->fd); break;	977	case REQ_FSYNC: req->result = fsync (req->fd); break;
669	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;	978	case REQ_READDIR: scandir_ (req, self); break;
670		979
		980	case REQ_BUSY:
		981	{
		982	struct timeval tv;
		983
		984	tv.tv_sec = req->fd;
		985	tv.tv_usec = req->fd2;
		986
		987	req->result = select (0, 0, 0, 0, &tv);
		988	}
		989
		990	case REQ_GROUP:
		991	case REQ_NOP:
671	case REQ_QUIT:	992	case REQ_QUIT:
672	break;	993	break;
673		994
674	default:	995	default:
675	req->result = ENOSYS;	996	req->result = ENOSYS;
676	break;	997	break;
677	}	998	}
678		999
679	req->errorno = errno;	1000	req->errorno = errno;
680		1001
681	pthread_mutex_lock (&reslock);	1002	LOCK (reslock);
682		1003
683	req->next = 0;	1004	if (!reqq_push (&res_queue, req))
684
685	if (rese)
686	{
687	rese->next = req;
688	rese = req;
689	}
690	else
691	{
692	rese = ress = req;
693
694	/* write a dummy byte to the pipe so fh becomes ready */	1005	/* write a dummy byte to the pipe so fh becomes ready */
695	write (respipe [1], &respipe, 1);	1006	write (respipe [1], &respipe, 1);
696	}
697		1007
698	pthread_mutex_unlock (&reslock);	1008	self->req = 0;
		1009	worker_clear (self);
		1010
		1011	UNLOCK (reslock);
699	}	1012	}
700	while (type != REQ_QUIT);	1013	while (type != REQ_QUIT);
701		1014
		1015	LOCK (wrklock);
		1016	worker_free (self);
		1017	UNLOCK (wrklock);
		1018
702	return 0;	1019	return 0;
703	}	1020	}
704		1021
705	/*****************************************************************************/	1022	/*****************************************************************************/
706		1023
707	static void atfork_prepare (void)	1024	static void atfork_prepare (void)
708	{	1025	{
709	pthread_mutex_lock (&reqlock);	1026	LOCK (wrklock);
710	pthread_mutex_lock (&reslock);	1027	LOCK (reqlock);
		1028	LOCK (reslock);
711	#if !HAVE_PREADWRITE	1029	#if !HAVE_PREADWRITE
712	pthread_mutex_lock (&preadwritelock);	1030	LOCK (preadwritelock);
713	#endif	1031	#endif
714	#if !HAVE_READDIR_R	1032	#if !HAVE_READDIR_R
715	pthread_mutex_lock (&readdirlock);	1033	LOCK (readdirlock);
716	#endif	1034	#endif
717	}	1035	}
718		1036
719	static void atfork_parent (void)	1037	static void atfork_parent (void)
720	{	1038	{
721	#if !HAVE_READDIR_R	1039	#if !HAVE_READDIR_R
722	pthread_mutex_unlock (&readdirlock);	1040	UNLOCK (readdirlock);
723	#endif	1041	#endif
724	#if !HAVE_PREADWRITE	1042	#if !HAVE_PREADWRITE
725	pthread_mutex_unlock (&preadwritelock);	1043	UNLOCK (preadwritelock);
726	#endif	1044	#endif
727	pthread_mutex_unlock (&reslock);	1045	UNLOCK (reslock);
728	pthread_mutex_unlock (&reqlock);	1046	UNLOCK (reqlock);
		1047	UNLOCK (wrklock);
729	}	1048	}
730		1049
731	static void atfork_child (void)	1050	static void atfork_child (void)
732	{	1051	{
733	aio_req prv;	1052	aio_req prv;
734		1053
		1054	while (prv = reqq_shift (&req_queue))
		1055	req_free (prv);
		1056
		1057	while (prv = reqq_shift (&res_queue))
		1058	req_free (prv);
		1059
		1060	while (wrk_first.next != &wrk_first)
		1061	{
		1062	worker *wrk = wrk_first.next;
		1063
		1064	if (wrk->req)
		1065	req_free (wrk->req);
		1066
		1067	worker_clear (wrk);
		1068	worker_free (wrk);
		1069	}
		1070
735	started = 0;	1071	started = 0;
736		1072	nreqs = 0;
737	while (reqs)
738	{
739	prv = reqs;
740	reqs = prv->next;
741	free_req (prv);
742	}
743
744	reqs = reqe = 0;
745
746	while (ress)
747	{
748	prv = ress;
749	ress = prv->next;
750	free_req (prv);
751	}
752
753	ress = rese = 0;
754		1073
755	close (respipe [0]);	1074	close (respipe [0]);
756	close (respipe [1]);	1075	close (respipe [1]);
757	create_pipe ();	1076	create_pipe ();
758		1077
759	atfork_parent ();	1078	atfork_parent ();
760	}	1079	}
761		1080
762	#define dREQ \	1081	#define dREQ \
763	aio_req req; \	1082	aio_req req; \
		1083	int req_pri = next_pri; \
		1084	next_pri = DEFAULT_PRI + PRI_BIAS; \
764	\	1085	\
765	if (SvOK (callback) && !SvROK (callback)) \	1086	if (SvOK (callback) && !SvROK (callback)) \
766	croak ("clalback must be undef or of reference type"); \	1087	croak ("callback must be undef or of reference type"); \
767	\	1088	\
768	Newz (0, req, 1, aio_cb); \	1089	Newz (0, req, 1, aio_cb); \
769	if (!req) \	1090	if (!req) \
770	croak ("out of memory during aio_req allocation"); \	1091	croak ("out of memory during aio_req allocation"); \
771	\	1092	\
772	req->callback = newSVsv (callback);	1093	req->callback = newSVsv (callback); \
		1094	req->pri = req_pri
		1095
		1096	#define REQ_SEND \
		1097	req_send (req); \
		1098	\
		1099	if (GIMME_V != G_VOID) \
		1100	XPUSHs (req_sv (req, AIO_REQ_KLASS));
773		1101
774	MODULE = IO::AIO PACKAGE = IO::AIO	1102	MODULE = IO::AIO PACKAGE = IO::AIO
775		1103
776	PROTOTYPES: ENABLE	1104	PROTOTYPES: ENABLE
777		1105
778	BOOT:	1106	BOOT:
779	{	1107	{
		1108	HV *stash = gv_stashpv ("IO::AIO", 1);
		1109	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
		1110	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
		1111	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
		1112
780	create_pipe ();	1113	create_pipe ();
781	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	1114	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
782	}	1115	}
783		1116
784	void	1117	void
785	min_parallel(nthreads)	1118	min_parallel (int nthreads)
786	int nthreads
787	PROTOTYPE: $	1119	PROTOTYPE: $
788		1120
789	void	1121	void
790	max_parallel(nthreads)	1122	max_parallel (int nthreads)
791	int nthreads
792	PROTOTYPE: $	1123	PROTOTYPE: $
793		1124
794	int	1125	int
795	max_outstanding(nreqs)	1126	max_outstanding (int maxreqs)
796	int nreqs	1127	PROTOTYPE: $
797	PROTOTYPE: $
798	CODE:	1128	CODE:
799	RETVAL = max_outstanding;	1129	RETVAL = max_outstanding;
800	max_outstanding = nreqs;	1130	max_outstanding = maxreqs;
		1131	OUTPUT:
		1132	RETVAL
801		1133
802	void	1134	void
803	aio_open(pathname,flags,mode,callback=&PL_sv_undef)	1135	aio_open (pathname,flags,mode,callback=&PL_sv_undef)
804	SV * pathname	1136	SV * pathname
805	int flags	1137	int flags
806	int mode	1138	int mode
807	SV * callback	1139	SV * callback
808	PROTOTYPE: $$$;$	1140	PROTOTYPE: $$$;$
809	CODE:	1141	PPCODE:
810	{	1142	{
811	dREQ;	1143	dREQ;
812		1144
813	req->type = REQ_OPEN;	1145	req->type = REQ_OPEN;
814	req->data = newSVsv (pathname);	1146	req->data = newSVsv (pathname);
815	req->dataptr = SvPVbyte_nolen (req->data);	1147	req->dataptr = SvPVbyte_nolen (req->data);
816	req->fd = flags;	1148	req->fd = flags;
817	req->mode = mode;	1149	req->mode = mode;
818		1150
819	send_req (req);	1151	REQ_SEND;
820	}	1152	}
821		1153
822	void	1154	void
823	aio_close(fh,callback=&PL_sv_undef)	1155	aio_close (fh,callback=&PL_sv_undef)
824	SV * fh	1156	SV * fh
825	SV * callback	1157	SV * callback
826	PROTOTYPE: $;$	1158	PROTOTYPE: $;$
827	ALIAS:	1159	ALIAS:
828	aio_close = REQ_CLOSE	1160	aio_close = REQ_CLOSE
829	aio_fsync = REQ_FSYNC	1161	aio_fsync = REQ_FSYNC
830	aio_fdatasync = REQ_FDATASYNC	1162	aio_fdatasync = REQ_FDATASYNC
831	CODE:	1163	PPCODE:
832	{	1164	{
833	dREQ;	1165	dREQ;
834		1166
835	req->type = ix;	1167	req->type = ix;
836	req->fh = newSVsv (fh);	1168	req->fh = newSVsv (fh);
837	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1169	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
838		1170
839	send_req (req);	1171	REQ_SEND (req);
840	}	1172	}
841		1173
842	void	1174	void
843	aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1175	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
844	SV * fh	1176	SV * fh
845	UV offset	1177	UV offset
846	UV length	1178	UV length
847	SV * data	1179	SV * data
848	UV dataoffset	1180	UV dataoffset
849	SV * callback	1181	SV * callback
850	ALIAS:	1182	ALIAS:
851	aio_read = REQ_READ	1183	aio_read = REQ_READ
852	aio_write = REQ_WRITE	1184	aio_write = REQ_WRITE
853	PROTOTYPE: $$$$$;$	1185	PROTOTYPE: $$$$$;$
854	CODE:	1186	PPCODE:
855	{	1187	{
856	aio_req req;	1188	aio_req req;
857	STRLEN svlen;	1189	STRLEN svlen;
858	char *svptr = SvPVbyte (data, svlen);	1190	char *svptr = SvPVbyte (data, svlen);
859		1191
…		…
897	{	1229	{
898	SvREADONLY_on (data);	1230	SvREADONLY_on (data);
899	req->data2ptr = (void *)data;	1231	req->data2ptr = (void *)data;
900	}	1232	}
901		1233
902	send_req (req);	1234	REQ_SEND;
903	}	1235	}
904	}	1236	}
905		1237
906	void	1238	void
907	aio_sendfile(out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1239	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)
908	SV * out_fh	1240	SV * out_fh
909	SV * in_fh	1241	SV * in_fh
910	UV in_offset	1242	UV in_offset
911	UV length	1243	UV length
912	SV * callback	1244	SV * callback
913	PROTOTYPE: $$$$;$	1245	PROTOTYPE: $$$$;$
914	CODE:	1246	PPCODE:
915	{	1247	{
916	dREQ;	1248	dREQ;
917		1249
918	req->type = REQ_SENDFILE;	1250	req->type = REQ_SENDFILE;
919	req->fh = newSVsv (out_fh);	1251	req->fh = newSVsv (out_fh);
…		…
921	req->fh2 = newSVsv (in_fh);	1253	req->fh2 = newSVsv (in_fh);
922	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1254	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
923	req->offset = in_offset;	1255	req->offset = in_offset;
924	req->length = length;	1256	req->length = length;
925		1257
926	send_req (req);	1258	REQ_SEND;
927	}	1259	}
928		1260
929	void	1261	void
930	aio_readahead(fh,offset,length,callback=&PL_sv_undef)	1262	aio_readahead (fh,offset,length,callback=&PL_sv_undef)
931	SV * fh	1263	SV * fh
932	UV offset	1264	UV offset
933	IV length	1265	IV length
934	SV * callback	1266	SV * callback
935	PROTOTYPE: $$$;$	1267	PROTOTYPE: $$$;$
936	CODE:	1268	PPCODE:
937	{	1269	{
938	dREQ;	1270	dREQ;
939		1271
940	req->type = REQ_READAHEAD;	1272	req->type = REQ_READAHEAD;
941	req->fh = newSVsv (fh);	1273	req->fh = newSVsv (fh);
942	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1274	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
943	req->offset = offset;	1275	req->offset = offset;
944	req->length = length;	1276	req->length = length;
945		1277
946	send_req (req);	1278	REQ_SEND;
947	}	1279	}
948		1280
949	void	1281	void
950	aio_stat(fh_or_path,callback=&PL_sv_undef)	1282	aio_stat (fh_or_path,callback=&PL_sv_undef)
951	SV * fh_or_path	1283	SV * fh_or_path
952	SV * callback	1284	SV * callback
953	ALIAS:	1285	ALIAS:
954	aio_stat = REQ_STAT	1286	aio_stat = REQ_STAT
955	aio_lstat = REQ_LSTAT	1287	aio_lstat = REQ_LSTAT
956	CODE:	1288	PPCODE:
957	{	1289	{
958	dREQ;	1290	dREQ;
959		1291
960	New (0, req->statdata, 1, Stat_t);	1292	New (0, req->statdata, 1, Stat_t);
961	if (!req->statdata)	1293	if (!req->statdata)
962	{	1294	{
963	free_req (req);	1295	req_free (req);
964	croak ("out of memory during aio_req->statdata allocation");	1296	croak ("out of memory during aio_req->statdata allocation");
965	}	1297	}
966		1298
967	if (SvPOK (fh_or_path))	1299	if (SvPOK (fh_or_path))
968	{	1300	{
…		…
975	req->type = REQ_FSTAT;	1307	req->type = REQ_FSTAT;
976	req->fh = newSVsv (fh_or_path);	1308	req->fh = newSVsv (fh_or_path);
977	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1309	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
978	}	1310	}
979		1311
980	send_req (req);	1312	REQ_SEND;
981	}	1313	}
982		1314
983	void	1315	void
984	aio_unlink(pathname,callback=&PL_sv_undef)	1316	aio_unlink (pathname,callback=&PL_sv_undef)
985	SV * pathname	1317	SV * pathname
986	SV * callback	1318	SV * callback
987	ALIAS:	1319	ALIAS:
988	aio_unlink = REQ_UNLINK	1320	aio_unlink = REQ_UNLINK
989	aio_rmdir = REQ_RMDIR	1321	aio_rmdir = REQ_RMDIR
		1322	aio_readdir = REQ_READDIR
990	CODE:	1323	PPCODE:
991	{	1324	{
992	dREQ;	1325	dREQ;
993		1326
994	req->type = ix;	1327	req->type = ix;
995	req->data = newSVsv (pathname);	1328	req->data = newSVsv (pathname);
996	req->dataptr = SvPVbyte_nolen (req->data);	1329	req->dataptr = SvPVbyte_nolen (req->data);
997		1330
998	send_req (req);	1331	REQ_SEND;
999	}	1332	}
1000		1333
1001	void	1334	void
1002	aio_symlink(oldpath,newpath,callback=&PL_sv_undef)	1335	aio_link (oldpath,newpath,callback=&PL_sv_undef)
1003	SV * oldpath	1336	SV * oldpath
1004	SV * newpath	1337	SV * newpath
1005	SV * callback	1338	SV * callback
		1339	ALIAS:
		1340	aio_link = REQ_LINK
		1341	aio_symlink = REQ_SYMLINK
		1342	aio_rename = REQ_RENAME
1006	CODE:	1343	PPCODE:
1007	{	1344	{
1008	dREQ;	1345	dREQ;
1009		1346
1010	req->type = REQ_SYMLINK;	1347	req->type = ix;
1011	req->fh = newSVsv (oldpath);	1348	req->fh = newSVsv (oldpath);
1012	req->data2ptr = SvPVbyte_nolen (req->fh);	1349	req->data2ptr = SvPVbyte_nolen (req->fh);
1013	req->data = newSVsv (newpath);	1350	req->data = newSVsv (newpath);
1014	req->dataptr = SvPVbyte_nolen (req->data);	1351	req->dataptr = SvPVbyte_nolen (req->data);
1015		1352
1016	send_req (req);	1353	REQ_SEND;
1017	}	1354	}
1018		1355
1019	void	1356	void
1020	aio_readdir(pathname,callback=&PL_sv_undef)	1357	aio_busy (delay,callback=&PL_sv_undef)
1021	SV * pathname	1358	double delay
1022	SV * callback	1359	SV * callback
1023	CODE:	1360	PPCODE:
1024	{	1361	{
1025	dREQ;	1362	dREQ;
1026		1363
		1364	req->type = REQ_BUSY;
		1365	req->fd = delay < 0. ? 0 : delay;
		1366	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
		1367
		1368	REQ_SEND;
		1369	}
		1370
		1371	void
		1372	aio_group (callback=&PL_sv_undef)
		1373	SV * callback
		1374	PROTOTYPE: ;$
		1375	PPCODE:
		1376	{
		1377	dREQ;
		1378
1027	req->type = REQ_READDIR;	1379	req->type = REQ_GROUP;
1028	req->data = newSVsv (pathname);	1380	req_send (req);
1029	req->dataptr = SvPVbyte_nolen (req->data);
1030
1031	send_req (req);
1032	}
1033		1381
		1382	XPUSHs (req_sv (req, AIO_GRP_KLASS));
		1383	}
		1384
1034	void	1385	void
		1386	aio_nop (callback=&PL_sv_undef)
		1387	SV * callback
		1388	PPCODE:
		1389	{
		1390	dREQ;
		1391
		1392	req->type = REQ_NOP;
		1393
		1394	REQ_SEND;
		1395	}
		1396
		1397	void
		1398	aioreq_pri (int pri = DEFAULT_PRI)
		1399	CODE:
		1400	if (pri < PRI_MIN) pri = PRI_MIN;
		1401	if (pri > PRI_MAX) pri = PRI_MAX;
		1402	next_pri = pri + PRI_BIAS;
		1403
		1404	void
		1405	aioreq_nice (int nice = 0)
		1406	CODE:
		1407	nice = next_pri - nice;
		1408	if (nice < PRI_MIN) nice = PRI_MIN;
		1409	if (nice > PRI_MAX) nice = PRI_MAX;
		1410	next_pri = nice + PRI_BIAS;
		1411
		1412	void
1035	flush()	1413	flush ()
1036	PROTOTYPE:	1414	PROTOTYPE:
1037	CODE:	1415	CODE:
1038	while (nreqs)	1416	while (nreqs)
1039	{	1417	{
1040	poll_wait ();	1418	poll_wait ();
1041	poll_cb ();	1419	poll_cb (0);
1042	}	1420	}
1043		1421
1044	void	1422	void
1045	poll()	1423	poll()
1046	PROTOTYPE:	1424	PROTOTYPE:
1047	CODE:	1425	CODE:
1048	if (nreqs)	1426	if (nreqs)
1049	{	1427	{
1050	poll_wait ();	1428	poll_wait ();
1051	poll_cb ();	1429	poll_cb (0);
1052	}	1430	}
1053		1431
1054	int	1432	int
1055	poll_fileno()	1433	poll_fileno()
1056	PROTOTYPE:	1434	PROTOTYPE:
…		…
1061		1439
1062	int	1440	int
1063	poll_cb(...)	1441	poll_cb(...)
1064	PROTOTYPE:	1442	PROTOTYPE:
1065	CODE:	1443	CODE:
1066	RETVAL = poll_cb ();	1444	RETVAL = poll_cb (0);
		1445	OUTPUT:
		1446	RETVAL
		1447
		1448	int
		1449	poll_some(int max = 0)
		1450	PROTOTYPE: $
		1451	CODE:
		1452	RETVAL = poll_cb (max);
1067	OUTPUT:	1453	OUTPUT:
1068	RETVAL	1454	RETVAL
1069		1455
1070	void	1456	void
1071	poll_wait()	1457	poll_wait()
…		…
1080	CODE:	1466	CODE:
1081	RETVAL = nreqs;	1467	RETVAL = nreqs;
1082	OUTPUT:	1468	OUTPUT:
1083	RETVAL	1469	RETVAL
1084		1470
		1471	PROTOTYPES: DISABLE
		1472
		1473	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
		1474
		1475	void
		1476	cancel (aio_req_ornot req)
		1477	CODE:
		1478	req_cancel (req);
		1479
		1480	void
		1481	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
		1482	CODE:
		1483	SvREFCNT_dec (req->callback);
		1484	req->callback = newSVsv (callback);
		1485
		1486	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
		1487
		1488	void
		1489	add (aio_req grp, ...)
		1490	PPCODE:
		1491	{
		1492	int i;
		1493	aio_req req;
		1494
		1495	if (grp->fd == 2)
		1496	croak ("cannot add requests to IO::AIO::GRP after the group finished");
		1497
		1498	for (i = 1; i < items; ++i )
		1499	{
		1500	if (GIMME_V != G_VOID)
		1501	XPUSHs (sv_2mortal (newSVsv (ST (i))));
		1502
		1503	req = SvAIO_REQ (ST (i));
		1504
		1505	if (req)
		1506	{
		1507	++grp->length;
		1508	req->grp = grp;
		1509
		1510	req->grp_prev = 0;
		1511	req->grp_next = grp->grp_first;
		1512
		1513	if (grp->grp_first)
		1514	grp->grp_first->grp_prev = req;
		1515
		1516	grp->grp_first = req;
		1517	}
		1518	}
		1519	}
		1520
		1521	void
		1522	cancel_subs (aio_req_ornot req)
		1523	CODE:
		1524	req_cancel_subs (req);
		1525
		1526	void
		1527	result (aio_req grp, ...)
		1528	CODE:
		1529	{
		1530	int i;
		1531	AV *av = newAV ();
		1532
		1533	for (i = 1; i < items; ++i )
		1534	av_push (av, newSVsv (ST (i)));
		1535
		1536	SvREFCNT_dec (grp->data);
		1537	grp->data = (SV *)av;
		1538	}
		1539
		1540	void
		1541	limit (aio_req grp, int limit)
		1542	CODE:
		1543	grp->fd2 = limit;
		1544	aio_grp_feed (grp);
		1545
		1546	void
		1547	feed (aio_req grp, SV *callback=&PL_sv_undef)
		1548	CODE:
		1549	{
		1550	SvREFCNT_dec (grp->fh2);
		1551	grp->fh2 = newSVsv (callback);
		1552
		1553	if (grp->fd2 <= 0)
		1554	grp->fd2 = 2;
		1555
		1556	aio_grp_feed (grp);
		1557	}
		1558

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