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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.32 by root, Mon Aug 22 23:20:37 2005 UTC vs.
Revision 1.73 by root, Tue Oct 24 21:26:30 2006 UTC

		1	/* solaris */
		2	#define _POSIX_PTHREAD_SEMANTICS 1
		3
		4	#if __linux
		5	# define _GNU_SOURCE
		6	#endif
		7
1	#define _REENTRANT 1	8	#define _REENTRANT 1
		9
2	#include <errno.h>	10	#include <errno.h>
3		11
4	#include "EXTERN.h"	12	#include "EXTERN.h"
5	#include "perl.h"	13	#include "perl.h"
6	#include "XSUB.h"	14	#include "XSUB.h"
7		15
8	#include "autoconf/config.h"	16	#include "autoconf/config.h"
9		17
10	#include <pthread.h>	18	#include <pthread.h>
11		19
		20	#include <stddef.h>
		21	#include <errno.h>
		22	#include <sys/time.h>
		23	#include <sys/select.h>
12	#include <sys/types.h>	24	#include <sys/types.h>
13	#include <sys/stat.h>	25	#include <sys/stat.h>
14		26	#include <limits.h>
15	#include <unistd.h>	27	#include <unistd.h>
16	#include <fcntl.h>	28	#include <fcntl.h>
17	#include <signal.h>	29	#include <signal.h>
18	#include <sched.h>	30	#include <sched.h>
19		31
…		…
23	# elif __freebsd	35	# elif __freebsd
24	# include <sys/socket.h>	36	# include <sys/socket.h>
25	# include <sys/uio.h>	37	# include <sys/uio.h>
26	# elif __hpux	38	# elif __hpux
27	# include <sys/socket.h>	39	# include <sys/socket.h>
		40	# elif __solaris /* not yet */
		41	# include <sys/sendfile.h>
		42	# else
		43	# error sendfile support requested but not available
28	# endif	44	# endif
		45	#endif
		46
		47	/* used for struct dirent, AIX doesn't provide it */
		48	#ifndef NAME_MAX
		49	# define NAME_MAX 4096
29	#endif	50	#endif
30		51
31	#if __ia64	52	#if __ia64
32	# define STACKSIZE 65536	53	# define STACKSIZE 65536
		54	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
		55	# define STACKSIZE PTHREAD_STACK_MIN
33	#else	56	#else
34	# define STACKSIZE 4096	57	# define STACKSIZE 16384
35	#endif	58	#endif
		59
		60	/* buffer size for various temporary buffers */
		61	#define AIO_BUFSIZE 65536
		62
		63	#define dBUF \
		64	char *aio_buf; \
		65	LOCK (wrklock); \
		66	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
		67	UNLOCK (wrklock); \
		68	if (!aio_buf) \
		69	return -1;
36		70
37	enum {	71	enum {
38	REQ_QUIT,	72	REQ_QUIT,
39	REQ_OPEN, REQ_CLOSE,	73	REQ_OPEN, REQ_CLOSE,
40	REQ_READ, REQ_WRITE, REQ_READAHEAD,	74	REQ_READ, REQ_WRITE, REQ_READAHEAD,
41	REQ_SENDFILE,	75	REQ_SENDFILE,
42	REQ_STAT, REQ_LSTAT, REQ_FSTAT,	76	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
43	REQ_FSYNC, REQ_FDATASYNC,	77	REQ_FSYNC, REQ_FDATASYNC,
44	REQ_UNLINK, REQ_RMDIR,	78	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
45	REQ_SYMLINK,	79	REQ_READDIR,
		80	REQ_LINK, REQ_SYMLINK,
		81	REQ_GROUP, REQ_NOP,
		82	REQ_BUSY,
46	};	83	};
47		84
		85	#define AIO_REQ_KLASS "IO::AIO::REQ"
		86	#define AIO_GRP_KLASS "IO::AIO::GRP"
		87
48	typedef struct aio_cb {	88	typedef struct aio_cb
		89	{
49	struct aio_cb *volatile next;	90	struct aio_cb *volatile next;
50		91
51	int type;	92	SV *data, *callback;
52		93	SV *fh, *fh2;
53	int fd, fd2;	94	void *dataptr, *data2ptr;
		95	Stat_t *statdata;
54	off_t offset;	96	off_t offset;
55	size_t length;	97	size_t length;
56	ssize_t result;	98	ssize_t result;
		99
		100	STRLEN dataoffset;
		101	int type;
		102	int fd, fd2;
		103	int errorno;
57	mode_t mode; /* open */	104	mode_t mode; /* open */
58	int errorno;
59	SV *data, *callback;
60	SV *fh, *fh2;
61	void *dataptr, *data2ptr;
62	STRLEN dataoffset;
63		105
64	Stat_t *statdata;	106	unsigned char flags;
		107	unsigned char pri;
		108
		109	SV *self; /* the perl counterpart of this request, if any */
		110	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
65	} aio_cb;	111	} aio_cb;
66		112
		113	enum {
		114	FLAG_CANCELLED = 0x01,
		115	};
		116
67	typedef aio_cb *aio_req;	117	typedef aio_cb *aio_req;
		118	typedef aio_cb *aio_req_ornot;
		119
		120	enum {
		121	PRI_MIN = -4,
		122	PRI_MAX = 4,
		123
		124	DEFAULT_PRI = 0,
		125	PRI_BIAS = -PRI_MIN,
		126	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
		127	};
		128
		129	static int next_pri = DEFAULT_PRI + PRI_BIAS;
68		130
69	static int started, wanted;	131	static int started, wanted;
70	static volatile int nreqs;	132	static volatile int nreqs;
71	static int max_outstanding = 1<<30;	133	static int max_outstanding = 1<<30;
72	static int respipe [2];	134	static int respipe [2];
73		135
		136	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
		137	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
		138	#else
		139	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
		140	#endif
		141
		142	#define LOCK(mutex) pthread_mutex_lock (&(mutex))
		143	#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
		144
		145	/* worker threasd management */
		146	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
		147
		148	typedef struct worker {
		149	/* locked by wrklock */
		150	struct worker *prev, *next;
		151
		152	pthread_t tid;
		153
		154	/* locked by reslock, reqlock or wrklock */
		155	aio_req req; /* currently processed request */
		156	void *dbuf;
		157	DIR *dirp;
		158	} worker;
		159
		160	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
		161
		162	static void worker_clear (worker *wrk)
		163	{
		164	if (wrk->dirp)
		165	{
		166	closedir (wrk->dirp);
		167	wrk->dirp = 0;
		168	}
		169
		170	if (wrk->dbuf)
		171	{
		172	free (wrk->dbuf);
		173	wrk->dbuf = 0;
		174	}
		175	}
		176
		177	static void worker_free (worker *wrk)
		178	{
		179	wrk->next->prev = wrk->prev;
		180	wrk->prev->next = wrk->next;
		181
		182	free (wrk);
		183	}
		184
74	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	185	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
75	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;	186	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
76	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	187	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
77		188
78	static volatile aio_req reqs, reqe; /* queue start, queue end */	189	/*
79	static volatile aio_req ress, rese; /* queue start, queue end */	190	* a somewhat faster data structure might be nice, but
		191	* with 8 priorities this actually needs <20 insns
		192	* per shift, the most expensive operation.
		193	*/
		194	typedef struct {
		195	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
		196	int size;
		197	} reqq;
80		198
		199	static reqq req_queue;
		200	static reqq res_queue;
		201
		202	int reqq_push (reqq *q, aio_req req)
		203	{
		204	int pri = req->pri;
		205	req->next = 0;
		206
		207	if (q->qe[pri])
		208	{
		209	q->qe[pri]->next = req;
		210	q->qe[pri] = req;
		211	}
		212	else
		213	q->qe[pri] = q->qs[pri] = req;
		214
		215	return q->size++;
		216	}
		217
		218	aio_req reqq_shift (reqq *q)
		219	{
		220	int pri;
		221
		222	if (!q->size)
		223	return 0;
		224
		225	--q->size;
		226
		227	for (pri = NUM_PRI; pri--; )
		228	{
		229	aio_req req = q->qs[pri];
		230
		231	if (req)
		232	{
		233	if (!(q->qs[pri] = req->next))
		234	q->qe[pri] = 0;
		235
		236	return req;
		237	}
		238	}
		239
		240	abort ();
		241	}
		242
		243	static void req_invoke (aio_req req);
81	static void free_req (aio_req req)	244	static void req_free (aio_req req);
82	{	245	static void req_cancel (aio_req req);
83	if (req->data)
84	SvREFCNT_dec (req->data);
85		246
		247	/* must be called at most once */
		248	static SV *req_sv (aio_req req, const char *klass)
		249	{
86	if (req->fh)	250	if (!req->self)
87	SvREFCNT_dec (req->fh);	251	{
		252	req->self = (SV *)newHV ();
		253	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
		254	}
88		255
89	if (req->fh2)	256	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));
		257	}
		258
		259	static aio_req SvAIO_REQ (SV *sv)
		260	{
		261	MAGIC *mg;
		262
		263	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))
		264	croak ("object of class " AIO_REQ_KLASS " expected");
		265
		266	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
		267
		268	return mg ? (aio_req)mg->mg_ptr : 0;
		269	}
		270
		271	static void aio_grp_feed (aio_req grp)
		272	{
		273	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))
		274	{
		275	int old_len = grp->length;
		276
		277	if (grp->fh2 && SvOK (grp->fh2))
		278	{
		279	dSP;
		280
		281	ENTER;
		282	SAVETMPS;
		283	PUSHMARK (SP);
		284	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
		285	PUTBACK;
		286	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);
		287	SPAGAIN;
		288	FREETMPS;
		289	LEAVE;
		290	}
		291
		292	/* stop if no progress has been made */
		293	if (old_len == grp->length)
		294	{
90	SvREFCNT_dec (req->fh2);	295	SvREFCNT_dec (grp->fh2);
91		296	grp->fh2 = 0;
92	if (req->statdata)	297	break;
93	Safefree (req->statdata);	298	}
94
95	if (req->callback)
96	SvREFCNT_dec (req->callback);
97
98	Safefree (req);
99	}
100
101	static void
102	poll_wait ()
103	{
104	if (nreqs && !ress)
105	{	299	}
		300	}
		301
		302	static void aio_grp_dec (aio_req grp)
		303	{
		304	--grp->length;
		305
		306	/* call feeder, if applicable */
		307	aio_grp_feed (grp);
		308
		309	/* finish, if done */
		310	if (!grp->length && grp->fd)
		311	{
		312	req_invoke (grp);
		313	req_free (grp);
		314	}
		315	}
		316
		317	static void poll_wait ()
		318	{
106	fd_set rfd;	319	fd_set rfd;
		320
		321	while (nreqs)
		322	{
		323	int size;
		324	#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
		325	LOCK (reslock);
		326	#endif
		327	size = res_queue.size;
		328	#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
		329	UNLOCK (reslock);
		330	#endif
		331
		332	if (size)
		333	return;
		334
107	FD_ZERO(&rfd);	335	FD_ZERO(&rfd);
108	FD_SET(respipe [0], &rfd);	336	FD_SET(respipe [0], &rfd);
109		337
110	select (respipe [0] + 1, &rfd, 0, 0, 0);	338	select (respipe [0] + 1, &rfd, 0, 0, 0);
111	}	339	}
112	}	340	}
113		341
114	static int	342	static void req_invoke (aio_req req)
115	poll_cb ()	343	{
		344	dSP;
		345
		346	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
		347	{
		348	errno = req->errorno;
		349
		350	ENTER;
		351	SAVETMPS;
		352	PUSHMARK (SP);
		353	EXTEND (SP, 1);
		354
		355	switch (req->type)
		356	{
		357	case REQ_READDIR:
		358	{
		359	SV *rv = &PL_sv_undef;
		360
		361	if (req->result >= 0)
		362	{
		363	int i;
		364	char *buf = req->data2ptr;
		365	AV *av = newAV ();
		366
		367	av_extend (av, req->result - 1);
		368
		369	for (i = 0; i < req->result; ++i)
		370	{
		371	SV *sv = newSVpv (buf, 0);
		372
		373	av_store (av, i, sv);
		374	buf += SvCUR (sv) + 1;
		375	}
		376
		377	rv = sv_2mortal (newRV_noinc ((SV *)av));
		378	}
		379
		380	PUSHs (rv);
		381	}
		382	break;
		383
		384	case REQ_OPEN:
		385	{
		386	/* convert fd to fh */
		387	SV *fh;
		388
		389	PUSHs (sv_2mortal (newSViv (req->result)));
		390	PUTBACK;
		391	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
		392	SPAGAIN;
		393
		394	fh = SvREFCNT_inc (POPs);
		395
		396	PUSHMARK (SP);
		397	XPUSHs (sv_2mortal (fh));
		398	}
		399	break;
		400
		401	case REQ_GROUP:
		402	req->fd = 2; /* mark group as finished */
		403
		404	if (req->data)
		405	{
		406	int i;
		407	AV *av = (AV *)req->data;
		408
		409	EXTEND (SP, AvFILL (av) + 1);
		410	for (i = 0; i <= AvFILL (av); ++i)
		411	PUSHs (*av_fetch (av, i, 0));
		412	}
		413	break;
		414
		415	case REQ_NOP:
		416	case REQ_BUSY:
		417	break;
		418
		419	default:
		420	PUSHs (sv_2mortal (newSViv (req->result)));
		421	break;
		422	}
		423
		424
		425	PUTBACK;
		426	call_sv (req->callback, G_VOID | G_EVAL);
		427	SPAGAIN;
		428
		429	FREETMPS;
		430	LEAVE;
		431	}
		432
		433	if (req->grp)
		434	{
		435	aio_req grp = req->grp;
		436
		437	/* unlink request */
		438	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
		439	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
		440
		441	if (grp->grp_first == req)
		442	grp->grp_first = req->grp_next;
		443
		444	aio_grp_dec (grp);
		445	}
		446
		447	if (SvTRUE (ERRSV))
		448	{
		449	req_free (req);
		450	croak (0);
		451	}
		452	}
		453
		454	static void req_free (aio_req req)
		455	{
		456	if (req->self)
		457	{
		458	sv_unmagic (req->self, PERL_MAGIC_ext);
		459	SvREFCNT_dec (req->self);
		460	}
		461
		462	SvREFCNT_dec (req->data);
		463	SvREFCNT_dec (req->fh);
		464	SvREFCNT_dec (req->fh2);
		465	SvREFCNT_dec (req->callback);
		466	Safefree (req->statdata);
		467
		468	if (req->type == REQ_READDIR)
		469	free (req->data2ptr);
		470
		471	Safefree (req);
		472	}
		473
		474	static void req_cancel_subs (aio_req grp)
		475	{
		476	aio_req sub;
		477
		478	if (grp->type != REQ_GROUP)
		479	return;
		480
		481	SvREFCNT_dec (grp->fh2);
		482	grp->fh2 = 0;
		483
		484	for (sub = grp->grp_first; sub; sub = sub->grp_next)
		485	req_cancel (sub);
		486	}
		487
		488	static void req_cancel (aio_req req)
		489	{
		490	req->flags |= FLAG_CANCELLED;
		491
		492	req_cancel_subs (req);
		493	}
		494
		495	static int poll_cb ()
116	{	496	{
117	dSP;	497	dSP;
118	int count = 0;	498	int count = 0;
119	int do_croak = 0;	499	int do_croak = 0;
120	aio_req req;	500	aio_req req;
121		501
122	for (;;)	502	for (;;)
123	{	503	{
124	pthread_mutex_lock (&reslock);	504	LOCK (reslock);
125	req = ress;	505	req = reqq_shift (&res_queue);
126		506
127	if (req)	507	if (req)
128	{	508	{
129	ress = req->next;
130
131	if (!ress)	509	if (!res_queue.size)
132	{	510	{
133	/* read any signals sent by the worker threads */	511	/* read any signals sent by the worker threads */
134	char buf [32];	512	char buf [32];
135	while (read (respipe [0], buf, 32) == 32)	513	while (read (respipe [0], buf, 32) == 32)
136	;	514	;
137
138	rese = 0;
139	}	515	}
140	}	516	}
141		517
142	pthread_mutex_unlock (&reslock);	518	UNLOCK (reslock);
143		519
144	if (!req)	520	if (!req)
145	break;	521	break;
146		522
147	nreqs--;	523	--nreqs;
148		524
149	if (req->type == REQ_QUIT)	525	if (req->type == REQ_QUIT)
150	started--;	526	started--;
		527	else if (req->type == REQ_GROUP && req->length)
		528	{
		529	req->fd = 1; /* mark request as delayed */
		530	continue;
		531	}
151	else	532	else
152	{	533	{
153	int errorno = errno;
154	errno = req->errorno;
155
156	if (req->type == REQ_READ)	534	if (req->type == REQ_READ)
157	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));	535	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
158		536
159	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))	537	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
160	SvREADONLY_off (req->data);	538	SvREADONLY_off (req->data);
…		…
164	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	542	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
165	PL_laststatval = req->result;	543	PL_laststatval = req->result;
166	PL_statcache = *(req->statdata);	544	PL_statcache = *(req->statdata);
167	}	545	}
168		546
169	ENTER;	547	req_invoke (req);
170	PUSHMARK (SP);
171	XPUSHs (sv_2mortal (newSViv (req->result)));
172		548
173	if (req->type == REQ_OPEN)
174	{
175	/* convert fd to fh */
176	SV *fh;
177
178	PUTBACK;
179	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
180	SPAGAIN;
181
182	fh = SvREFCNT_inc (POPs);
183
184	PUSHMARK (SP);
185	XPUSHs (sv_2mortal (fh));
186	}
187
188	if (SvOK (req->callback))
189	{
190	PUTBACK;
191	call_sv (req->callback, G_VOID | G_EVAL);
192	SPAGAIN;
193
194	if (SvTRUE (ERRSV))
195	{
196	free_req (req);
197	croak (0);
198	}
199	}
200
201	LEAVE;
202
203	errno = errorno;
204	count++;	549	count++;
205	}	550	}
206		551
207	free_req (req);	552	req_free (req);
208	}	553	}
209		554
210	return count;	555	return count;
211	}	556	}
212		557
213	static void *aio_proc(void *arg);	558	static void *aio_proc(void *arg);
214		559
215	static void
216	start_thread (void)	560	static void start_thread (void)
217	{	561	{
218	sigset_t fullsigset, oldsigset;	562	sigset_t fullsigset, oldsigset;
219	pthread_t tid;
220	pthread_attr_t attr;	563	pthread_attr_t attr;
		564
		565	worker *wrk = calloc (1, sizeof (worker));
		566
		567	if (!wrk)
		568	croak ("unable to allocate worker thread data");
221		569
222	pthread_attr_init (&attr);	570	pthread_attr_init (&attr);
223	pthread_attr_setstacksize (&attr, STACKSIZE);	571	pthread_attr_setstacksize (&attr, STACKSIZE);
224	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);	572	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
225		573
226	sigfillset (&fullsigset);	574	sigfillset (&fullsigset);
		575
		576	LOCK (wrklock);
227	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);	577	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
228		578
229	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)	579	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
		580	{
		581	wrk->prev = &wrk_first;
		582	wrk->next = wrk_first.next;
		583	wrk_first.next->prev = wrk;
		584	wrk_first.next = wrk;
230	started++;	585	started++;
		586	}
		587	else
		588	free (wrk);
231		589
232	sigprocmask (SIG_SETMASK, &oldsigset, 0);	590	sigprocmask (SIG_SETMASK, &oldsigset, 0);
		591	UNLOCK (wrklock);
233	}	592	}
234		593
235	static void	594	static void req_send (aio_req req)
236	send_req (aio_req req)
237	{	595	{
238	while (started < wanted && nreqs >= started)	596	while (started < wanted && nreqs >= started)
239	start_thread ();	597	start_thread ();
240		598
241	nreqs++;	599	++nreqs;
242		600
243	pthread_mutex_lock (&reqlock);	601	LOCK (reqlock);
244		602	reqq_push (&req_queue, req);
245	req->next = 0;
246
247	if (reqe)
248	{
249	reqe->next = req;
250	reqe = req;
251	}
252	else
253	reqe = reqs = req;
254
255	pthread_cond_signal (&reqwait);	603	pthread_cond_signal (&reqwait);
256	pthread_mutex_unlock (&reqlock);	604	UNLOCK (reqlock);
257		605
258	if (nreqs > max_outstanding)	606	if (nreqs > max_outstanding)
259	for (;;)	607	for (;;)
260	{	608	{
261	poll_cb ();	609	poll_cb ();
…		…
265		613
266	poll_wait ();	614	poll_wait ();
267	}	615	}
268	}	616	}
269		617
270	static void	618	static void end_thread (void)
271	end_thread (void)
272	{	619	{
273	aio_req req;	620	aio_req req;
		621
274	Newz (0, req, 1, aio_cb);	622	Newz (0, req, 1, aio_cb);
		623
275	req->type = REQ_QUIT;	624	req->type = REQ_QUIT;
		625	req->pri = PRI_MAX + PRI_BIAS;
276		626
277	send_req (req);	627	req_send (req);
278	}	628	}
279		629
280	static void min_parallel (int nthreads)	630	static void min_parallel (int nthreads)
281	{	631	{
282	if (wanted < nthreads)	632	if (wanted < nthreads)
…		…
311	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))	661	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
312	croak ("cannot set result pipe to nonblocking mode");	662	croak ("cannot set result pipe to nonblocking mode");
313		663
314	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))	664	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
315	croak ("cannot set result pipe to nonblocking mode");	665	croak ("cannot set result pipe to nonblocking mode");
316	}
317
318	static void atfork_prepare (void)
319	{
320	pthread_mutex_lock (&reqlock);
321	pthread_mutex_lock (&reslock);
322	}
323
324	static void atfork_parent (void)
325	{
326	pthread_mutex_unlock (&reslock);
327	pthread_mutex_unlock (&reqlock);
328	}
329
330	static void atfork_child (void)
331	{
332	aio_req prv;
333
334	started = 0;
335
336	while (reqs)
337	{
338	prv = reqs;
339	reqs = prv->next;
340	free_req (prv);
341	}
342
343	reqs = reqe = 0;
344
345	while (ress)
346	{
347	prv = ress;
348	ress = prv->next;
349	free_req (prv);
350	}
351
352	ress = rese = 0;
353
354	close (respipe [0]);
355	close (respipe [1]);
356	create_pipe ();
357
358	atfork_parent ();
359	}	666	}
360		667
361	/*****************************************************************************/	668	/*****************************************************************************/
362	/* work around various missing functions */	669	/* work around various missing functions */
363		670
…		…
368	/*	675	/*
369	* make our pread/pwrite safe against themselves, but not against	676	* make our pread/pwrite safe against themselves, but not against
370	* normal read/write by using a mutex. slows down execution a lot,	677	* normal read/write by using a mutex. slows down execution a lot,
371	* but that's your problem, not mine.	678	* but that's your problem, not mine.
372	*/	679	*/
373	static pthread_mutex_t iolock = PTHREAD_MUTEX_INITIALIZER;	680	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
374		681
375	static ssize_t	682	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
376	pread (int fd, void *buf, size_t count, off_t offset)
377	{	683	{
378	ssize_t res;	684	ssize_t res;
379	off_t ooffset;	685	off_t ooffset;
380		686
381	pthread_mutex_lock (&iolock);	687	LOCK (preadwritelock);
382	ooffset = lseek (fd, 0, SEEK_CUR);	688	ooffset = lseek (fd, 0, SEEK_CUR);
383	lseek (fd, offset, SEEK_SET);	689	lseek (fd, offset, SEEK_SET);
384	res = read (fd, buf, count);	690	res = read (fd, buf, count);
385	lseek (fd, ooffset, SEEK_SET);	691	lseek (fd, ooffset, SEEK_SET);
386	pthread_mutex_unlock (&iolock);	692	UNLOCK (preadwritelock);
387		693
388	return res;	694	return res;
389	}	695	}
390		696
391	static ssize_t
392	pwrite (int fd, void *buf, size_t count, off_t offset)	697	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
393	{	698	{
394	ssize_t res;	699	ssize_t res;
395	off_t ooffset;	700	off_t ooffset;
396		701
397	pthread_mutex_lock (&iolock);	702	LOCK (preadwritelock);
398	ooffset = lseek (fd, 0, SEEK_CUR);	703	ooffset = lseek (fd, 0, SEEK_CUR);
399	lseek (fd, offset, SEEK_SET);	704	lseek (fd, offset, SEEK_SET);
400	res = write (fd, buf, count);	705	res = write (fd, buf, count);
401	lseek (fd, offset, SEEK_SET);	706	lseek (fd, offset, SEEK_SET);
402	pthread_mutex_unlock (&iolock);	707	UNLOCK (preadwritelock);
403		708
404	return res;	709	return res;
405	}	710	}
406	#endif	711	#endif
407		712
…		…
410	#endif	715	#endif
411		716
412	#if !HAVE_READAHEAD	717	#if !HAVE_READAHEAD
413	# define readahead aio_readahead	718	# define readahead aio_readahead
414		719
415	static char readahead_buf[4096];
416
417	static ssize_t
418	readahead (int fd, off_t offset, size_t count)	720	static ssize_t readahead (int fd, off_t offset, size_t count)
419	{	721	{
		722	dBUF;
		723
420	while (count > 0)	724	while (count > 0)
421	{	725	{
422	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);	726	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
423		727
424	pread (fd, readahead_buf, len, offset);	728	pread (fd, aio_buf, len, offset);
425	offset += len;	729	offset += len;
426	count -= len;	730	count -= len;
427	}	731	}
428		732
429	errno = 0;	733	errno = 0;
430	}	734	}
431	#endif	735	#endif
432		736
		737	#if !HAVE_READDIR_R
		738	# define readdir_r aio_readdir_r
		739
		740	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
		741
		742	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
		743	{
		744	struct dirent *e;
		745	int errorno;
		746
		747	LOCK (readdirlock);
		748
		749	e = readdir (dirp);
		750	errorno = errno;
		751
		752	if (e)
		753	{
		754	*res = ent;
		755	strcpy (ent->d_name, e->d_name);
		756	}
		757	else
		758	*res = 0;
		759
		760	UNLOCK (readdirlock);
		761
		762	errno = errorno;
		763	return e ? 0 : -1;
		764	}
		765	#endif
		766
433	/* sendfile always needs emulation */	767	/* sendfile always needs emulation */
434	static ssize_t
435	sendfile_ (int ofd, int ifd, off_t offset, size_t count)	768	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
436	{	769	{
437	ssize_t res;	770	ssize_t res;
438		771
439	if (!count)	772	if (!count)
440	return 0;	773	return 0;
441		774
		775	#if HAVE_SENDFILE
442	#if __linux	776	# if __linux
443	res = sendfile (ofd, ifd, &offset, count);	777	res = sendfile (ofd, ifd, &offset, count);
444		778
445	#elif __freebsd	779	# elif __freebsd
446	/*	780	/*
447	* Of course, the freebsd sendfile is a dire hack with no thoughts	781	* Of course, the freebsd sendfile is a dire hack with no thoughts
448	* wasted on making it similar to other i/o functions.	782	* wasted on making it similar to other I/O functions.
449	*/	783	*/
450	{	784	{
451	off_t sbytes;	785	off_t sbytes;
452	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);	786	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
453		787
454	if (!res && errno == EAGAIN)	788	if (res < 0 && sbytes)
		789	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
455	res = sbytes;	790	res = sbytes;
456	}	791	}
457		792
458	#elif __hpux	793	# elif __hpux
459	res = sendfile (ofd, ifd, offset, count, 0, 0);	794	res = sendfile (ofd, ifd, offset, count, 0, 0);
460		795
		796	# elif __solaris
		797	{
		798	struct sendfilevec vec;
		799	size_t sbytes;
		800
		801	vec.sfv_fd = ifd;
		802	vec.sfv_flag = 0;
		803	vec.sfv_off = offset;
		804	vec.sfv_len = count;
		805
		806	res = sendfilev (ofd, &vec, 1, &sbytes);
		807
		808	if (res < 0 && sbytes)
		809	res = sbytes;
		810	}
		811
		812	# endif
461	#else	813	#else
462	res = -1;	814	res = -1;
463	errno = ENOSYS;	815	errno = ENOSYS;
464	#endif	816	#endif
465		817
		818	if (res < 0
466	if (res < 0 && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK))	819	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
		820	#if __solaris
		821	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
		822	#endif
		823	)
		824	)
467	{	825	{
468	/* emulate sendfile. this is a major pain in the ass */	826	/* emulate sendfile. this is a major pain in the ass */
469	char *buf = malloc (4096);	827	dBUF;
		828
470	res = 0;	829	res = 0;
471		830
472	for (;;)	831	while (count)
473	{	832	{
474	ssize_t cnt;	833	ssize_t cnt;
475		834
476	cnt = pread (ifd, buf, 4096, offset);	835	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
477		836
478	if (cnt <= 0)	837	if (cnt <= 0)
479	{	838	{
480	if (cnt && !res) res = -1;	839	if (cnt && !res) res = -1;
481	break;	840	break;
482	}	841	}
483		842
484	cnt = write (ofd, buf, cnt);	843	cnt = write (ofd, aio_buf, cnt);
485		844
486	if (cnt <= 0)	845	if (cnt <= 0)
487	{	846	{
488	if (cnt && !res) res = -1;	847	if (cnt && !res) res = -1;
489	break;	848	break;
490	}	849	}
491		850
492	offset += cnt;	851	offset += cnt;
493	res += cnt;	852	res += cnt;
		853	count -= cnt;
494	}	854	}
495
496	{
497	int errorno = errno;
498	free (buf);
499	errno = errorno;
500	}
501	}	855	}
502		856
503	return res;	857	return res;
		858	}
		859
		860	/* read a full directory */
		861	static void scandir_ (aio_req req, worker *self)
		862	{
		863	DIR *dirp;
		864	union
		865	{
		866	struct dirent d;
		867	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
		868	} *u;
		869	struct dirent *entp;
		870	char *name, *names;
		871	int memlen = 4096;
		872	int memofs = 0;
		873	int res = 0;
		874	int errorno;
		875
		876	LOCK (wrklock);
		877	self->dirp = dirp = opendir (req->dataptr);
		878	self->dbuf = u = malloc (sizeof (*u));
		879	UNLOCK (wrklock);
		880
		881	req->data2ptr = names = malloc (memlen);
		882
		883	if (dirp && u && names)
		884	for (;;)
		885	{
		886	errno = 0;
		887	readdir_r (dirp, &u->d, &entp);
		888
		889	if (!entp)
		890	break;
		891
		892	name = entp->d_name;
		893
		894	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
		895	{
		896	int len = strlen (name) + 1;
		897
		898	res++;
		899
		900	while (memofs + len > memlen)
		901	{
		902	memlen *= 2;
		903	LOCK (wrklock);
		904	req->data2ptr = names = realloc (names, memlen);
		905	UNLOCK (wrklock);
		906
		907	if (!names)
		908	break;
		909	}
		910
		911	memcpy (names + memofs, name, len);
		912	memofs += len;
		913	}
		914	}
		915
		916	if (errno)
		917	res = -1;
		918
		919	req->result = res;
504	}	920	}
505		921
506	/*****************************************************************************/	922	/*****************************************************************************/
507		923
508	static void *
509	aio_proc (void *thr_arg)	924	static void *aio_proc (void *thr_arg)
510	{	925	{
511	aio_req req;	926	aio_req req;
512	int type;	927	int type;
		928	worker *self = (worker *)thr_arg;
513		929
514	do	930	do
515	{	931	{
516	pthread_mutex_lock (&reqlock);	932	LOCK (reqlock);
517		933
518	for (;;)	934	for (;;)
519	{	935	{
520	req = reqs;	936	self->req = req = reqq_shift (&req_queue);
521
522	if (reqs)
523	{
524	reqs = reqs->next;
525	if (!reqs) reqe = 0;
526	}
527		937
528	if (req)	938	if (req)
529	break;	939	break;
530		940
531	pthread_cond_wait (&reqwait, &reqlock);	941	pthread_cond_wait (&reqwait, &reqlock);
532	}	942	}
533		943
534	pthread_mutex_unlock (&reqlock);	944	UNLOCK (reqlock);
535		945
536	errno = 0; /* strictly unnecessary */	946	errno = 0; /* strictly unnecessary */
		947	type = req->type; /* remember type for QUIT check */
537		948
538	type = req->type;	949	if (!(req->flags & FLAG_CANCELLED))
539
540	switch (type)	950	switch (type)
541	{	951	{
542	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;	952	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
543	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;	953	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
544		954
545	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	955	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
546	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;	956	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length, self); break;
547		957
548	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	958	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
549	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	959	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
550	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	960	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
551		961
552	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;	962	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
553	case REQ_CLOSE: req->result = close (req->fd); break;	963	case REQ_CLOSE: req->result = close (req->fd); break;
554	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	964	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
555	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;	965	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
		966	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
		967	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
556	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;	968	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
557		969
558	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	970	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
559	case REQ_FSYNC: req->result = fsync (req->fd); break;	971	case REQ_FSYNC: req->result = fsync (req->fd); break;
		972	case REQ_READDIR: scandir_ (req, self); break;
560		973
		974	case REQ_BUSY:
		975	{
		976	struct timeval tv;
		977
		978	tv.tv_sec = req->fd;
		979	tv.tv_usec = req->fd2;
		980
		981	req->result = select (0, 0, 0, 0, &tv);
		982	}
		983
		984	case REQ_GROUP:
		985	case REQ_NOP:
561	case REQ_QUIT:	986	case REQ_QUIT:
562	break;	987	break;
563		988
564	default:	989	default:
565	req->result = ENOSYS;	990	req->result = ENOSYS;
566	break;	991	break;
567	}	992	}
568		993
569	req->errorno = errno;	994	req->errorno = errno;
570		995
571	pthread_mutex_lock (&reslock);	996	LOCK (reslock);
572		997
573	req->next = 0;	998	if (!reqq_push (&res_queue, req))
574
575	if (rese)
576	{
577	rese->next = req;
578	rese = req;
579	}
580	else
581	{
582	rese = ress = req;
583
584	/* write a dummy byte to the pipe so fh becomes ready */	999	/* write a dummy byte to the pipe so fh becomes ready */
585	write (respipe [1], &respipe, 1);	1000	write (respipe [1], &respipe, 1);
586	}
587		1001
588	pthread_mutex_unlock (&reslock);	1002	self->req = 0;
		1003	worker_clear (self);
		1004
		1005	UNLOCK (reslock);
589	}	1006	}
590	while (type != REQ_QUIT);	1007	while (type != REQ_QUIT);
591		1008
		1009	LOCK (wrklock);
		1010	worker_free (self);
		1011	UNLOCK (wrklock);
		1012
592	return 0;	1013	return 0;
		1014	}
		1015
		1016	/*****************************************************************************/
		1017
		1018	static void atfork_prepare (void)
		1019	{
		1020	LOCK (wrklock);
		1021	LOCK (reqlock);
		1022	LOCK (reslock);
		1023	#if !HAVE_PREADWRITE
		1024	LOCK (preadwritelock);
		1025	#endif
		1026	#if !HAVE_READDIR_R
		1027	LOCK (readdirlock);
		1028	#endif
		1029	}
		1030
		1031	static void atfork_parent (void)
		1032	{
		1033	#if !HAVE_READDIR_R
		1034	UNLOCK (readdirlock);
		1035	#endif
		1036	#if !HAVE_PREADWRITE
		1037	UNLOCK (preadwritelock);
		1038	#endif
		1039	UNLOCK (reslock);
		1040	UNLOCK (reqlock);
		1041	UNLOCK (wrklock);
		1042	}
		1043
		1044	static void atfork_child (void)
		1045	{
		1046	aio_req prv;
		1047
		1048	while (prv = reqq_shift (&req_queue))
		1049	req_free (prv);
		1050
		1051	while (prv = reqq_shift (&res_queue))
		1052	req_free (prv);
		1053
		1054	while (wrk_first.next != &wrk_first)
		1055	{
		1056	worker *wrk = wrk_first.next;
		1057
		1058	if (wrk->req)
		1059	req_free (wrk->req);
		1060
		1061	worker_clear (wrk);
		1062	worker_free (wrk);
		1063	}
		1064
		1065	started = 0;
		1066	nreqs = 0;
		1067
		1068	close (respipe [0]);
		1069	close (respipe [1]);
		1070	create_pipe ();
		1071
		1072	atfork_parent ();
593	}	1073	}
594		1074
595	#define dREQ \	1075	#define dREQ \
596	aio_req req; \	1076	aio_req req; \
		1077	int req_pri = next_pri; \
		1078	next_pri = DEFAULT_PRI + PRI_BIAS; \
597	\	1079	\
598	if (SvOK (callback) && !SvROK (callback)) \	1080	if (SvOK (callback) && !SvROK (callback)) \
599	croak ("clalback must be undef or of reference type"); \	1081	croak ("callback must be undef or of reference type"); \
600	\	1082	\
601	Newz (0, req, 1, aio_cb); \	1083	Newz (0, req, 1, aio_cb); \
602	if (!req) \	1084	if (!req) \
603	croak ("out of memory during aio_req allocation"); \	1085	croak ("out of memory during aio_req allocation"); \
604	\	1086	\
605	req->callback = newSVsv (callback);	1087	req->callback = newSVsv (callback); \
		1088	req->pri = req_pri
		1089
		1090	#define REQ_SEND \
		1091	req_send (req); \
		1092	\
		1093	if (GIMME_V != G_VOID) \
		1094	XPUSHs (req_sv (req, AIO_REQ_KLASS));
606		1095
607	MODULE = IO::AIO PACKAGE = IO::AIO	1096	MODULE = IO::AIO PACKAGE = IO::AIO
608		1097
609	PROTOTYPES: ENABLE	1098	PROTOTYPES: ENABLE
610		1099
611	BOOT:	1100	BOOT:
612	{	1101	{
		1102	HV *stash = gv_stashpv ("IO::AIO", 1);
		1103	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
		1104	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
		1105	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
		1106
613	create_pipe ();	1107	create_pipe ();
614	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	1108	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
615	}	1109	}
616		1110
617	void	1111	void
618	min_parallel(nthreads)	1112	min_parallel (nthreads)
619	int nthreads	1113	int nthreads
620	PROTOTYPE: $	1114	PROTOTYPE: $
621		1115
622	void	1116	void
623	max_parallel(nthreads)	1117	max_parallel (nthreads)
624	int nthreads	1118	int nthreads
625	PROTOTYPE: $	1119	PROTOTYPE: $
626		1120
627	int	1121	int
628	max_outstanding(nreqs)	1122	max_outstanding (nreqs)
629	int nreqs	1123	int nreqs
630	PROTOTYPE: $	1124	PROTOTYPE: $
631	CODE:	1125	CODE:
632	RETVAL = max_outstanding;	1126	RETVAL = max_outstanding;
633	max_outstanding = nreqs;	1127	max_outstanding = nreqs;
634		1128
635	void	1129	void
636	aio_open(pathname,flags,mode,callback=&PL_sv_undef)	1130	aio_open (pathname,flags,mode,callback=&PL_sv_undef)
637	SV * pathname	1131	SV * pathname
638	int flags	1132	int flags
639	int mode	1133	int mode
640	SV * callback	1134	SV * callback
641	PROTOTYPE: $$$;$	1135	PROTOTYPE: $$$;$
642	CODE:	1136	PPCODE:
643	{	1137	{
644	dREQ;	1138	dREQ;
645		1139
646	req->type = REQ_OPEN;	1140	req->type = REQ_OPEN;
647	req->data = newSVsv (pathname);	1141	req->data = newSVsv (pathname);
648	req->dataptr = SvPVbyte_nolen (req->data);	1142	req->dataptr = SvPVbyte_nolen (req->data);
649	req->fd = flags;	1143	req->fd = flags;
650	req->mode = mode;	1144	req->mode = mode;
651		1145
652	send_req (req);	1146	REQ_SEND;
653	}	1147	}
654		1148
655	void	1149	void
656	aio_close(fh,callback=&PL_sv_undef)	1150	aio_close (fh,callback=&PL_sv_undef)
657	SV * fh	1151	SV * fh
658	SV * callback	1152	SV * callback
659	PROTOTYPE: $;$	1153	PROTOTYPE: $;$
660	ALIAS:	1154	ALIAS:
661	aio_close = REQ_CLOSE	1155	aio_close = REQ_CLOSE
662	aio_fsync = REQ_FSYNC	1156	aio_fsync = REQ_FSYNC
663	aio_fdatasync = REQ_FDATASYNC	1157	aio_fdatasync = REQ_FDATASYNC
664	CODE:	1158	PPCODE:
665	{	1159	{
666	dREQ;	1160	dREQ;
667		1161
668	req->type = ix;	1162	req->type = ix;
669	req->fh = newSVsv (fh);	1163	req->fh = newSVsv (fh);
670	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1164	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
671		1165
672	send_req (req);	1166	REQ_SEND (req);
673	}	1167	}
674		1168
675	void	1169	void
676	aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1170	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
677	SV * fh	1171	SV * fh
678	UV offset	1172	UV offset
679	UV length	1173	UV length
680	SV * data	1174	SV * data
681	UV dataoffset	1175	UV dataoffset
682	SV * callback	1176	SV * callback
683	ALIAS:	1177	ALIAS:
684	aio_read = REQ_READ	1178	aio_read = REQ_READ
685	aio_write = REQ_WRITE	1179	aio_write = REQ_WRITE
686	PROTOTYPE: $$$$$;$	1180	PROTOTYPE: $$$$$;$
687	CODE:	1181	PPCODE:
688	{	1182	{
689	aio_req req;	1183	aio_req req;
690	STRLEN svlen;	1184	STRLEN svlen;
691	char *svptr = SvPVbyte (data, svlen);	1185	char *svptr = SvPVbyte (data, svlen);
692		1186
…		…
730	{	1224	{
731	SvREADONLY_on (data);	1225	SvREADONLY_on (data);
732	req->data2ptr = (void *)data;	1226	req->data2ptr = (void *)data;
733	}	1227	}
734		1228
735	send_req (req);	1229	REQ_SEND;
736	}	1230	}
737	}	1231	}
738		1232
739	void	1233	void
740	aio_sendfile(out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1234	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)
741	SV * out_fh	1235	SV * out_fh
742	SV * in_fh	1236	SV * in_fh
743	UV in_offset	1237	UV in_offset
744	UV length	1238	UV length
745	SV * callback	1239	SV * callback
746	PROTOTYPE: $$$$;$	1240	PROTOTYPE: $$$$;$
747	CODE:	1241	PPCODE:
748	{	1242	{
749	dREQ;	1243	dREQ;
750		1244
751	req->type = REQ_SENDFILE;	1245	req->type = REQ_SENDFILE;
752	req->fh = newSVsv (out_fh);	1246	req->fh = newSVsv (out_fh);
…		…
754	req->fh2 = newSVsv (in_fh);	1248	req->fh2 = newSVsv (in_fh);
755	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1249	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
756	req->offset = in_offset;	1250	req->offset = in_offset;
757	req->length = length;	1251	req->length = length;
758		1252
759	send_req (req);	1253	REQ_SEND;
760	}	1254	}
761		1255
762	void	1256	void
763	aio_readahead(fh,offset,length,callback=&PL_sv_undef)	1257	aio_readahead (fh,offset,length,callback=&PL_sv_undef)
764	SV * fh	1258	SV * fh
765	UV offset	1259	UV offset
766	IV length	1260	IV length
767	SV * callback	1261	SV * callback
768	PROTOTYPE: $$$;$	1262	PROTOTYPE: $$$;$
769	CODE:	1263	PPCODE:
770	{	1264	{
771	dREQ;	1265	dREQ;
772		1266
773	req->type = REQ_READAHEAD;	1267	req->type = REQ_READAHEAD;
774	req->fh = newSVsv (fh);	1268	req->fh = newSVsv (fh);
775	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1269	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
776	req->offset = offset;	1270	req->offset = offset;
777	req->length = length;	1271	req->length = length;
778		1272
779	send_req (req);	1273	REQ_SEND;
780	}	1274	}
781		1275
782	void	1276	void
783	aio_stat(fh_or_path,callback=&PL_sv_undef)	1277	aio_stat (fh_or_path,callback=&PL_sv_undef)
784	SV * fh_or_path	1278	SV * fh_or_path
785	SV * callback	1279	SV * callback
786	ALIAS:	1280	ALIAS:
787	aio_stat = REQ_STAT	1281	aio_stat = REQ_STAT
788	aio_lstat = REQ_LSTAT	1282	aio_lstat = REQ_LSTAT
789	CODE:	1283	PPCODE:
790	{	1284	{
791	dREQ;	1285	dREQ;
792		1286
793	New (0, req->statdata, 1, Stat_t);	1287	New (0, req->statdata, 1, Stat_t);
794	if (!req->statdata)	1288	if (!req->statdata)
795	{	1289	{
796	free_req (req);	1290	req_free (req);
797	croak ("out of memory during aio_req->statdata allocation");	1291	croak ("out of memory during aio_req->statdata allocation");
798	}	1292	}
799		1293
800	if (SvPOK (fh_or_path))	1294	if (SvPOK (fh_or_path))
801	{	1295	{
…		…
808	req->type = REQ_FSTAT;	1302	req->type = REQ_FSTAT;
809	req->fh = newSVsv (fh_or_path);	1303	req->fh = newSVsv (fh_or_path);
810	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1304	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
811	}	1305	}
812		1306
813	send_req (req);	1307	REQ_SEND;
814	}	1308	}
815		1309
816	void	1310	void
817	aio_unlink(pathname,callback=&PL_sv_undef)	1311	aio_unlink (pathname,callback=&PL_sv_undef)
818	SV * pathname	1312	SV * pathname
819	SV * callback	1313	SV * callback
820	ALIAS:	1314	ALIAS:
821	aio_unlink = REQ_UNLINK	1315	aio_unlink = REQ_UNLINK
822	aio_rmdir = REQ_RMDIR	1316	aio_rmdir = REQ_RMDIR
		1317	aio_readdir = REQ_READDIR
823	CODE:	1318	PPCODE:
824	{	1319	{
825	dREQ;	1320	dREQ;
826		1321
827	req->type = ix;	1322	req->type = ix;
828	req->data = newSVsv (pathname);	1323	req->data = newSVsv (pathname);
829	req->dataptr = SvPVbyte_nolen (req->data);	1324	req->dataptr = SvPVbyte_nolen (req->data);
830		1325
831	send_req (req);	1326	REQ_SEND;
832	}	1327	}
833		1328
834	void	1329	void
835	aio_symlink(oldpath,newpath,callback=&PL_sv_undef)	1330	aio_link (oldpath,newpath,callback=&PL_sv_undef)
836	SV * oldpath	1331	SV * oldpath
837	SV * newpath	1332	SV * newpath
838	SV * callback	1333	SV * callback
		1334	ALIAS:
		1335	aio_link = REQ_LINK
		1336	aio_symlink = REQ_SYMLINK
		1337	aio_rename = REQ_RENAME
839	CODE:	1338	PPCODE:
840	{	1339	{
841	dREQ;	1340	dREQ;
842		1341
843	req->type = REQ_SYMLINK;	1342	req->type = ix;
844	req->fh = newSVsv (oldpath);	1343	req->fh = newSVsv (oldpath);
845	req->data2ptr = SvPVbyte_nolen (req->fh);	1344	req->data2ptr = SvPVbyte_nolen (req->fh);
846	req->data = newSVsv (newpath);	1345	req->data = newSVsv (newpath);
847	req->dataptr = SvPVbyte_nolen (req->data);	1346	req->dataptr = SvPVbyte_nolen (req->data);
848		1347
849	send_req (req);	1348	REQ_SEND;
850	}	1349	}
851		1350
852	void	1351	void
		1352	aio_busy (delay,callback=&PL_sv_undef)
		1353	double delay
		1354	SV * callback
		1355	PPCODE:
		1356	{
		1357	dREQ;
		1358
		1359	req->type = REQ_BUSY;
		1360	req->fd = delay < 0. ? 0 : delay;
		1361	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
		1362
		1363	REQ_SEND;
		1364	}
		1365
		1366	void
		1367	aio_group (callback=&PL_sv_undef)
		1368	SV * callback
		1369	PROTOTYPE: ;$
		1370	PPCODE:
		1371	{
		1372	dREQ;
		1373
		1374	req->type = REQ_GROUP;
		1375	req_send (req);
		1376
		1377	XPUSHs (req_sv (req, AIO_GRP_KLASS));
		1378	}
		1379
		1380	void
		1381	aio_nop (callback=&PL_sv_undef)
		1382	SV * callback
		1383	PPCODE:
		1384	{
		1385	dREQ;
		1386
		1387	req->type = REQ_NOP;
		1388
		1389	REQ_SEND;
		1390	}
		1391
		1392	void
		1393	aioreq_pri (int pri = DEFAULT_PRI)
		1394	CODE:
		1395	if (pri < PRI_MIN) pri = PRI_MIN;
		1396	if (pri > PRI_MAX) pri = PRI_MAX;
		1397	next_pri = pri + PRI_BIAS;
		1398
		1399	void
		1400	aioreq_nice (int nice = 0)
		1401	CODE:
		1402	nice = next_pri - nice;
		1403	if (nice < PRI_MIN) nice = PRI_MIN;
		1404	if (nice > PRI_MAX) nice = PRI_MAX;
		1405	next_pri = nice + PRI_BIAS;
		1406
		1407	void
853	flush()	1408	flush ()
854	PROTOTYPE:	1409	PROTOTYPE:
855	CODE:	1410	CODE:
856	while (nreqs)	1411	while (nreqs)
857	{	1412	{
858	poll_wait ();	1413	poll_wait ();
…		…
898	CODE:	1453	CODE:
899	RETVAL = nreqs;	1454	RETVAL = nreqs;
900	OUTPUT:	1455	OUTPUT:
901	RETVAL	1456	RETVAL
902		1457
		1458	PROTOTYPES: DISABLE
		1459
		1460	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
		1461
		1462	void
		1463	cancel (aio_req_ornot req)
		1464	CODE:
		1465	req_cancel (req);
		1466
		1467	void
		1468	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
		1469	CODE:
		1470	SvREFCNT_dec (req->callback);
		1471	req->callback = newSVsv (callback);
		1472
		1473	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
		1474
		1475	void
		1476	add (aio_req grp, ...)
		1477	PPCODE:
		1478	{
		1479	int i;
		1480	aio_req req;
		1481
		1482	if (grp->fd == 2)
		1483	croak ("cannot add requests to IO::AIO::GRP after the group finished");
		1484
		1485	for (i = 1; i < items; ++i )
		1486	{
		1487	if (GIMME_V != G_VOID)
		1488	XPUSHs (sv_2mortal (newSVsv (ST (i))));
		1489
		1490	req = SvAIO_REQ (ST (i));
		1491
		1492	if (req)
		1493	{
		1494	++grp->length;
		1495	req->grp = grp;
		1496
		1497	req->grp_prev = 0;
		1498	req->grp_next = grp->grp_first;
		1499
		1500	if (grp->grp_first)
		1501	grp->grp_first->grp_prev = req;
		1502
		1503	grp->grp_first = req;
		1504	}
		1505	}
		1506	}
		1507
		1508	void
		1509	cancel_subs (aio_req_ornot req)
		1510	CODE:
		1511	req_cancel_subs (req);
		1512
		1513	void
		1514	result (aio_req grp, ...)
		1515	CODE:
		1516	{
		1517	int i;
		1518	AV *av = newAV ();
		1519
		1520	for (i = 1; i < items; ++i )
		1521	av_push (av, newSVsv (ST (i)));
		1522
		1523	SvREFCNT_dec (grp->data);
		1524	grp->data = (SV *)av;
		1525	}
		1526
		1527	void
		1528	limit (aio_req grp, int limit)
		1529	CODE:
		1530	grp->fd2 = limit;
		1531	aio_grp_feed (grp);
		1532
		1533	void
		1534	feed (aio_req grp, SV *callback=&PL_sv_undef)
		1535	CODE:
		1536	{
		1537	SvREFCNT_dec (grp->fh2);
		1538	grp->fh2 = newSVsv (callback);
		1539
		1540	if (grp->fd2 <= 0)
		1541	grp->fd2 = 2;
		1542
		1543	aio_grp_feed (grp);
		1544	}
		1545

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