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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.37 by root, Tue Aug 23 12:37:19 2005 UTC vs.
Revision 1.74 by root, Wed Oct 25 17:57:30 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"
…		…
8	#include "autoconf/config.h"	16	#include "autoconf/config.h"
9		17
10	#include <pthread.h>	18	#include <pthread.h>
11		19
12	#include <stddef.h>	20	#include <stddef.h>
		21	#include <errno.h>
		22	#include <sys/time.h>
		23	#include <sys/select.h>
13	#include <sys/types.h>	24	#include <sys/types.h>
14	#include <sys/stat.h>	25	#include <sys/stat.h>
15	#include <limits.h>	26	#include <limits.h>
16	#include <unistd.h>	27	#include <unistd.h>
17	#include <fcntl.h>	28	#include <fcntl.h>
…		…
31	# else	42	# else
32	# error sendfile support requested but not available	43	# error sendfile support requested but not available
33	# endif	44	# endif
34	#endif	45	#endif
35		46
		47	/* used for struct dirent, AIX doesn't provide it */
		48	#ifndef NAME_MAX
		49	# define NAME_MAX 4096
		50	#endif
		51
36	#if __ia64	52	#if __ia64
37	# define STACKSIZE 65536	53	# define STACKSIZE 65536
		54	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
		55	# define STACKSIZE PTHREAD_STACK_MIN
38	#else	56	#else
39	# define STACKSIZE 8192	57	# define STACKSIZE 16384
40	#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;
41		70
42	enum {	71	enum {
43	REQ_QUIT,	72	REQ_QUIT,
44	REQ_OPEN, REQ_CLOSE,	73	REQ_OPEN, REQ_CLOSE,
45	REQ_READ, REQ_WRITE, REQ_READAHEAD,	74	REQ_READ, REQ_WRITE, REQ_READAHEAD,
46	REQ_SENDFILE,	75	REQ_SENDFILE,
47	REQ_STAT, REQ_LSTAT, REQ_FSTAT,	76	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
48	REQ_FSYNC, REQ_FDATASYNC,	77	REQ_FSYNC, REQ_FDATASYNC,
49	REQ_UNLINK, REQ_RMDIR,	78	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
50	REQ_READDIR,	79	REQ_READDIR,
51	REQ_SYMLINK,	80	REQ_LINK, REQ_SYMLINK,
		81	REQ_GROUP, REQ_NOP,
		82	REQ_BUSY,
52	};	83	};
53		84
		85	#define AIO_REQ_KLASS "IO::AIO::REQ"
		86	#define AIO_GRP_KLASS "IO::AIO::GRP"
		87
54	typedef struct aio_cb {	88	typedef struct aio_cb
		89	{
55	struct aio_cb *volatile next;	90	struct aio_cb *volatile next;
56		91
57	int type;	92	SV *data, *callback;
58		93	SV *fh, *fh2;
59	/* should receive a cleanup, with unions */	94	void *dataptr, *data2ptr;
60	int fd, fd2;	95	Stat_t *statdata;
61	off_t offset;	96	off_t offset;
62	size_t length;	97	size_t length;
63	ssize_t result;	98	ssize_t result;
		99
		100	STRLEN dataoffset;
		101	int type;
		102	int fd, fd2;
		103	int errorno;
64	mode_t mode; /* open */	104	mode_t mode; /* open */
65	int errorno;
66	SV *data, *callback;
67	SV *fh, *fh2;
68	void *dataptr, *data2ptr;
69	STRLEN dataoffset;
70		105
71	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;
72	} aio_cb;	111	} aio_cb;
73		112
		113	enum {
		114	FLAG_CANCELLED = 0x01,
		115	};
		116
74	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;
75		130
76	static int started, wanted;	131	static int started, wanted;
77	static volatile int nreqs;	132	static volatile int nreqs;
78	static int max_outstanding = 1<<30;
79	static int respipe [2];	133	static int respipe [2];
80		134
		135	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
		136	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
		137	#else
		138	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
		139	#endif
		140
		141	#define LOCK(mutex) pthread_mutex_lock (&(mutex))
		142	#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
		143
		144	/* worker threasd management */
		145	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
		146
		147	typedef struct worker {
		148	/* locked by wrklock */
		149	struct worker *prev, *next;
		150
		151	pthread_t tid;
		152
		153	/* locked by reslock, reqlock or wrklock */
		154	aio_req req; /* currently processed request */
		155	void *dbuf;
		156	DIR *dirp;
		157	} worker;
		158
		159	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
		160
		161	static void worker_clear (worker *wrk)
		162	{
		163	if (wrk->dirp)
		164	{
		165	closedir (wrk->dirp);
		166	wrk->dirp = 0;
		167	}
		168
		169	if (wrk->dbuf)
		170	{
		171	free (wrk->dbuf);
		172	wrk->dbuf = 0;
		173	}
		174	}
		175
		176	static void worker_free (worker *wrk)
		177	{
		178	wrk->next->prev = wrk->prev;
		179	wrk->prev->next = wrk->next;
		180
		181	free (wrk);
		182	}
		183
81	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	184	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
82	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;	185	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
83	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	186	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
84		187
85	static volatile aio_req reqs, reqe; /* queue start, queue end */	188	/*
86	static volatile aio_req ress, rese; /* queue start, queue end */	189	* a somewhat faster data structure might be nice, but
		190	* with 8 priorities this actually needs <20 insns
		191	* per shift, the most expensive operation.
		192	*/
		193	typedef struct {
		194	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
		195	int size;
		196	} reqq;
87		197
		198	static reqq req_queue;
		199	static reqq res_queue;
		200
		201	int reqq_push (reqq *q, aio_req req)
		202	{
		203	int pri = req->pri;
		204	req->next = 0;
		205
		206	if (q->qe[pri])
		207	{
		208	q->qe[pri]->next = req;
		209	q->qe[pri] = req;
		210	}
		211	else
		212	q->qe[pri] = q->qs[pri] = req;
		213
		214	return q->size++;
		215	}
		216
		217	aio_req reqq_shift (reqq *q)
		218	{
		219	int pri;
		220
		221	if (!q->size)
		222	return 0;
		223
		224	--q->size;
		225
		226	for (pri = NUM_PRI; pri--; )
		227	{
		228	aio_req req = q->qs[pri];
		229
		230	if (req)
		231	{
		232	if (!(q->qs[pri] = req->next))
		233	q->qe[pri] = 0;
		234
		235	return req;
		236	}
		237	}
		238
		239	abort ();
		240	}
		241
		242	static int poll_cb ();
		243	static void req_invoke (aio_req req);
88	static void free_req (aio_req req)	244	static void req_free (aio_req req);
89	{	245	static void req_cancel (aio_req req);
90	if (req->data)
91	SvREFCNT_dec (req->data);
92		246
		247	/* must be called at most once */
		248	static SV *req_sv (aio_req req, const char *klass)
		249	{
93	if (req->fh)	250	if (!req->self)
94	SvREFCNT_dec (req->fh);	251	{
		252	req->self = (SV *)newHV ();
		253	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
		254	}
95		255
96	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	{
97	SvREFCNT_dec (req->fh2);	295	SvREFCNT_dec (grp->fh2);
98		296	grp->fh2 = 0;
99	if (req->statdata)	297	break;
100	Safefree (req->statdata);	298	}
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	{	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	{
116	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
117	FD_ZERO(&rfd);	335	FD_ZERO(&rfd);
118	FD_SET(respipe [0], &rfd);	336	FD_SET(respipe [0], &rfd);
119		337
120	select (respipe [0] + 1, &rfd, 0, 0, 0);	338	select (respipe [0] + 1, &rfd, 0, 0, 0);
121	}	339	}
122	}	340	}
123		341
124	static int	342	static void req_invoke (aio_req req)
125	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 ()
126	{	496	{
127	dSP;	497	dSP;
128	int count = 0;	498	int count = 0;
129	int do_croak = 0;	499	int do_croak = 0;
130	aio_req req;	500	aio_req req;
131		501
132	for (;;)	502	for (;;)
133	{	503	{
134	pthread_mutex_lock (&reslock);	504	LOCK (reslock);
135	req = ress;	505	req = reqq_shift (&res_queue);
136		506
137	if (req)	507	if (req)
138	{	508	{
139	ress = req->next;
140
141	if (!ress)	509	if (!res_queue.size)
142	{	510	{
143	/* read any signals sent by the worker threads */	511	/* read any signals sent by the worker threads */
144	char buf [32];	512	char buf [32];
145	while (read (respipe [0], buf, 32) == 32)	513	while (read (respipe [0], buf, 32) == 32)
146	;	514	;
147
148	rese = 0;
149	}	515	}
150	}	516	}
151		517
152	pthread_mutex_unlock (&reslock);	518	UNLOCK (reslock);
153		519
154	if (!req)	520	if (!req)
155	break;	521	break;
156		522
157	nreqs--;	523	--nreqs;
158		524
159	if (req->type == REQ_QUIT)	525	if (req->type == REQ_QUIT)
160	started--;	526	started--;
		527	else if (req->type == REQ_GROUP && req->length)
		528	{
		529	req->fd = 1; /* mark request as delayed */
		530	continue;
		531	}
161	else	532	else
162	{	533	{
163	int errorno = errno;
164	errno = req->errorno;
165
166	if (req->type == REQ_READ)	534	if (req->type == REQ_READ)
167	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));
168		536
169	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))	537	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
170	SvREADONLY_off (req->data);	538	SvREADONLY_off (req->data);
…		…
174	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	542	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
175	PL_laststatval = req->result;	543	PL_laststatval = req->result;
176	PL_statcache = *(req->statdata);	544	PL_statcache = *(req->statdata);
177	}	545	}
178		546
179	ENTER;	547	req_invoke (req);
180	PUSHMARK (SP);
181		548
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	}
205	else
206	{
207	XPUSHs (sv_2mortal (newSViv (req->result)));
208
209	if (req->type == REQ_OPEN)
210	{
211	/* convert fd to fh */
212	SV *fh;
213
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	}
223	}
224
225	if (SvOK (req->callback))
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++;	549	count++;
242	}	550	}
243		551
244	free_req (req);	552	req_free (req);
245	}	553	}
246		554
247	return count;	555	return count;
248	}	556	}
249		557
250	static void *aio_proc(void *arg);	558	static void *aio_proc(void *arg);
251		559
252	static void
253	start_thread (void)	560	static void start_thread (void)
254	{	561	{
255	sigset_t fullsigset, oldsigset;	562	sigset_t fullsigset, oldsigset;
256	pthread_t tid;
257	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");
258		569
259	pthread_attr_init (&attr);	570	pthread_attr_init (&attr);
260	pthread_attr_setstacksize (&attr, STACKSIZE);	571	pthread_attr_setstacksize (&attr, STACKSIZE);
261	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);	572	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
262		573
263	sigfillset (&fullsigset);	574	sigfillset (&fullsigset);
		575
		576	LOCK (wrklock);
264	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);	577	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
265		578
266	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;
267	started++;	585	started++;
		586	}
		587	else
		588	free (wrk);
268		589
269	sigprocmask (SIG_SETMASK, &oldsigset, 0);	590	sigprocmask (SIG_SETMASK, &oldsigset, 0);
		591	UNLOCK (wrklock);
270	}	592	}
271		593
272	static void	594	static void req_send (aio_req req)
273	send_req (aio_req req)
274	{	595	{
275	while (started < wanted && nreqs >= started)	596	while (started < wanted && nreqs >= started)
276	start_thread ();	597	start_thread ();
277		598
278	nreqs++;	599	++nreqs;
279		600
280	pthread_mutex_lock (&reqlock);	601	LOCK (reqlock);
281		602	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);	603	pthread_cond_signal (&reqwait);
293	pthread_mutex_unlock (&reqlock);	604	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	}	605	}
306		606
307	static void	607	static void end_thread (void)
308	end_thread (void)
309	{	608	{
310	aio_req req;	609	aio_req req;
		610
311	Newz (0, req, 1, aio_cb);	611	Newz (0, req, 1, aio_cb);
		612
312	req->type = REQ_QUIT;	613	req->type = REQ_QUIT;
		614	req->pri = PRI_MAX + PRI_BIAS;
313		615
314	send_req (req);	616	req_send (req);
315	}	617	}
316		618
317	static void min_parallel (int nthreads)	619	static void min_parallel (int nthreads)
318	{	620	{
319	if (wanted < nthreads)	621	if (wanted < nthreads)
…		…
364	* normal read/write by using a mutex. slows down execution a lot,	666	* normal read/write by using a mutex. slows down execution a lot,
365	* but that's your problem, not mine.	667	* but that's your problem, not mine.
366	*/	668	*/
367	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;	669	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
368		670
369	static ssize_t	671	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	{	672	{
372	ssize_t res;	673	ssize_t res;
373	off_t ooffset;	674	off_t ooffset;
374		675
375	pthread_mutex_lock (&preadwritelock);	676	LOCK (preadwritelock);
376	ooffset = lseek (fd, 0, SEEK_CUR);	677	ooffset = lseek (fd, 0, SEEK_CUR);
377	lseek (fd, offset, SEEK_SET);	678	lseek (fd, offset, SEEK_SET);
378	res = read (fd, buf, count);	679	res = read (fd, buf, count);
379	lseek (fd, ooffset, SEEK_SET);	680	lseek (fd, ooffset, SEEK_SET);
380	pthread_mutex_unlock (&preadwritelock);	681	UNLOCK (preadwritelock);
381		682
382	return res;	683	return res;
383	}	684	}
384		685
385	static ssize_t
386	pwrite (int fd, void *buf, size_t count, off_t offset)	686	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
387	{	687	{
388	ssize_t res;	688	ssize_t res;
389	off_t ooffset;	689	off_t ooffset;
390		690
391	pthread_mutex_lock (&preadwritelock);	691	LOCK (preadwritelock);
392	ooffset = lseek (fd, 0, SEEK_CUR);	692	ooffset = lseek (fd, 0, SEEK_CUR);
393	lseek (fd, offset, SEEK_SET);	693	lseek (fd, offset, SEEK_SET);
394	res = write (fd, buf, count);	694	res = write (fd, buf, count);
395	lseek (fd, offset, SEEK_SET);	695	lseek (fd, offset, SEEK_SET);
396	pthread_mutex_unlock (&preadwritelock);	696	UNLOCK (preadwritelock);
397		697
398	return res;	698	return res;
399	}	699	}
400	#endif	700	#endif
401		701
…		…
404	#endif	704	#endif
405		705
406	#if !HAVE_READAHEAD	706	#if !HAVE_READAHEAD
407	# define readahead aio_readahead	707	# define readahead aio_readahead
408		708
409	static ssize_t
410	readahead (int fd, off_t offset, size_t count)	709	static ssize_t readahead (int fd, off_t offset, size_t count)
411	{	710	{
412	char readahead_buf[4096];	711	dBUF;
413		712
414	while (count > 0)	713	while (count > 0)
415	{	714	{
416	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);	715	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
417		716
418	pread (fd, readahead_buf, len, offset);	717	pread (fd, aio_buf, len, offset);
419	offset += len;	718	offset += len;
420	count -= len;	719	count -= len;
421	}	720	}
422		721
423	errno = 0;	722	errno = 0;
…		…
427	#if !HAVE_READDIR_R	726	#if !HAVE_READDIR_R
428	# define readdir_r aio_readdir_r	727	# define readdir_r aio_readdir_r
429		728
430	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;	729	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
431		730
432	static int
433	readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)	731	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
434	{	732	{
435	struct dirent *e;	733	struct dirent *e;
436	int errorno;	734	int errorno;
437		735
438	pthread_mutex_lock (&readdirlock);	736	LOCK (readdirlock);
439		737
440	e = readdir (dirp);	738	e = readdir (dirp);
441	errorno = errno;	739	errorno = errno;
442		740
443	if (e)	741	if (e)
…		…
446	strcpy (ent->d_name, e->d_name);	744	strcpy (ent->d_name, e->d_name);
447	}	745	}
448	else	746	else
449	*res = 0;	747	*res = 0;
450		748
451	pthread_mutex_unlock (&readdirlock);	749	UNLOCK (readdirlock);
452		750
453	errno = errorno;	751	errno = errorno;
454	return e ? 0 : -1;	752	return e ? 0 : -1;
455	}	753	}
456	#endif	754	#endif
457		755
458	/* sendfile always needs emulation */	756	/* sendfile always needs emulation */
459	static ssize_t
460	sendfile_ (int ofd, int ifd, off_t offset, size_t count)	757	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
461	{	758	{
462	ssize_t res;	759	ssize_t res;
463		760
464	if (!count)	761	if (!count)
465	return 0;	762	return 0;
…		…
499		796
500	if (res < 0 && sbytes)	797	if (res < 0 && sbytes)
501	res = sbytes;	798	res = sbytes;
502	}	799	}
503		800
		801	# endif
504	# else	802	#else
505	res = -1;	803	res = -1;
506	errno = ENOSYS;	804	errno = ENOSYS;
507	# endif
508	#endif	805	#endif
509		806
510	if (res < 0	807	if (res < 0
511	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK	808	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
512	#if __solaris	809	#if __solaris
…		…
514	#endif	811	#endif
515	)	812	)
516	)	813	)
517	{	814	{
518	/* emulate sendfile. this is a major pain in the ass */	815	/* emulate sendfile. this is a major pain in the ass */
519	char buf[4096];	816	dBUF;
		817
520	res = 0;	818	res = 0;
521		819
522	for (;;)	820	while (count)
523	{	821	{
524	ssize_t cnt;	822	ssize_t cnt;
525		823
526	cnt = pread (ifd, buf, 4096, offset);	824	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
527		825
528	if (cnt <= 0)	826	if (cnt <= 0)
529	{	827	{
530	if (cnt && !res) res = -1;	828	if (cnt && !res) res = -1;
531	break;	829	break;
532	}	830	}
533		831
534	cnt = write (ofd, buf, cnt);	832	cnt = write (ofd, aio_buf, cnt);
535		833
536	if (cnt <= 0)	834	if (cnt <= 0)
537	{	835	{
538	if (cnt && !res) res = -1;	836	if (cnt && !res) res = -1;
539	break;	837	break;
540	}	838	}
541		839
542	offset += cnt;	840	offset += cnt;
543	res += cnt;	841	res += cnt;
		842	count -= cnt;
544	}	843	}
545	}	844	}
546		845
547	return res;	846	return res;
548	}	847	}
549		848
550	/* read a full directory */	849	/* read a full directory */
551	static int	850	static void scandir_ (aio_req req, worker *self)
552	scandir_ (const char *path, void **namesp)
553	{	851	{
554	DIR *dirp = opendir (path);	852	DIR *dirp;
555	union	853	union
556	{	854	{
557	struct dirent d;	855	struct dirent d;
558	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];	856	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
559	} u;	857	} *u;
560	struct dirent *entp;	858	struct dirent *entp;
561	char *name, *names;	859	char *name, *names;
562	int memlen = 4096;	860	int memlen = 4096;
563	int memofs = 0;	861	int memofs = 0;
564	int res = 0;	862	int res = 0;
565	int errorno;	863	int errorno;
566		864
567	if (!dirp)	865	LOCK (wrklock);
568	return -1;	866	self->dirp = dirp = opendir (req->dataptr);
		867	self->dbuf = u = malloc (sizeof (*u));
		868	UNLOCK (wrklock);
569		869
570	names = malloc (memlen);	870	req->data2ptr = names = malloc (memlen);
571		871
		872	if (dirp && u && names)
572	for (;;)	873	for (;;)
573	{	874	{
		875	errno = 0;
574	errno = 0, readdir_r (dirp, &u.d, &entp);	876	readdir_r (dirp, &u->d, &entp);
575		877
576	if (!entp)	878	if (!entp)
577	break;	879	break;
578		880
579	name = entp->d_name;	881	name = entp->d_name;
580		882
581	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))	883	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
582	{	884	{
583	int len = strlen (name) + 1;	885	int len = strlen (name) + 1;
584		886
585	res++;	887	res++;
586		888
587	while (memofs + len > memlen)	889	while (memofs + len > memlen)
588	{	890	{
589	memlen *= 2;	891	memlen *= 2;
		892	LOCK (wrklock);
590	names = realloc (names, memlen);	893	req->data2ptr = names = realloc (names, memlen);
		894	UNLOCK (wrklock);
		895
591	if (!names)	896	if (!names)
592	break;	897	break;
593	}	898	}
594		899
595	memcpy (names + memofs, name, len);	900	memcpy (names + memofs, name, len);
596	memofs += len;	901	memofs += len;
597	}	902	}
598	}	903	}
599		904
600	errorno = errno;
601	closedir (dirp);
602
603	if (errorno)	905	if (errno)
604	{
605	free (names);
606	errno = errorno;
607	res = -1;	906	res = -1;
608	}	907
609		908	req->result = res;
610	*namesp = (void *)names;
611	return res;
612	}	909	}
613		910
614	/*****************************************************************************/	911	/*****************************************************************************/
615		912
616	static void *
617	aio_proc (void *thr_arg)	913	static void *aio_proc (void *thr_arg)
618	{	914	{
619	aio_req req;	915	aio_req req;
620	int type;	916	int type;
		917	worker *self = (worker *)thr_arg;
621		918
622	do	919	do
623	{	920	{
624	pthread_mutex_lock (&reqlock);	921	LOCK (reqlock);
625		922
626	for (;;)	923	for (;;)
627	{	924	{
628	req = reqs;	925	self->req = req = reqq_shift (&req_queue);
629
630	if (reqs)
631	{
632	reqs = reqs->next;
633	if (!reqs) reqe = 0;
634	}
635		926
636	if (req)	927	if (req)
637	break;	928	break;
638		929
639	pthread_cond_wait (&reqwait, &reqlock);	930	pthread_cond_wait (&reqwait, &reqlock);
640	}	931	}
641		932
642	pthread_mutex_unlock (&reqlock);	933	UNLOCK (reqlock);
643		934
644	errno = 0; /* strictly unnecessary */	935	errno = 0; /* strictly unnecessary */
		936	type = req->type; /* remember type for QUIT check */
645		937
646	type = req->type;	938	if (!(req->flags & FLAG_CANCELLED))
647
648	switch (type)	939	switch (type)
649	{	940	{
650	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;	941	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
651	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;	942	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
652		943
653	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	944	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
654	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;	945	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length, self); break;
655		946
656	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	947	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
657	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	948	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
658	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	949	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
659		950
660	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;	951	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
661	case REQ_CLOSE: req->result = close (req->fd); break;	952	case REQ_CLOSE: req->result = close (req->fd); break;
662	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	953	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
663	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;	954	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
		955	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
		956	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
664	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;	957	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
665		958
666	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	959	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
667	case REQ_FSYNC: req->result = fsync (req->fd); break;	960	case REQ_FSYNC: req->result = fsync (req->fd); break;
668	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;	961	case REQ_READDIR: scandir_ (req, self); break;
669		962
		963	case REQ_BUSY:
		964	{
		965	struct timeval tv;
		966
		967	tv.tv_sec = req->fd;
		968	tv.tv_usec = req->fd2;
		969
		970	req->result = select (0, 0, 0, 0, &tv);
		971	}
		972
		973	case REQ_GROUP:
		974	case REQ_NOP:
670	case REQ_QUIT:	975	case REQ_QUIT:
671	break;	976	break;
672		977
673	default:	978	default:
674	req->result = ENOSYS;	979	req->result = ENOSYS;
675	break;	980	break;
676	}	981	}
677		982
678	req->errorno = errno;	983	req->errorno = errno;
679		984
680	pthread_mutex_lock (&reslock);	985	LOCK (reslock);
681		986
682	req->next = 0;	987	if (!reqq_push (&res_queue, req))
683
684	if (rese)
685	{
686	rese->next = req;
687	rese = req;
688	}
689	else
690	{
691	rese = ress = req;
692
693	/* write a dummy byte to the pipe so fh becomes ready */	988	/* write a dummy byte to the pipe so fh becomes ready */
694	write (respipe [1], &respipe, 1);	989	write (respipe [1], &respipe, 1);
695	}
696		990
697	pthread_mutex_unlock (&reslock);	991	self->req = 0;
		992	worker_clear (self);
		993
		994	UNLOCK (reslock);
698	}	995	}
699	while (type != REQ_QUIT);	996	while (type != REQ_QUIT);
700		997
		998	LOCK (wrklock);
		999	worker_free (self);
		1000	UNLOCK (wrklock);
		1001
701	return 0;	1002	return 0;
702	}	1003	}
703		1004
704	/*****************************************************************************/	1005	/*****************************************************************************/
705		1006
706	static void atfork_prepare (void)	1007	static void atfork_prepare (void)
707	{	1008	{
708	pthread_mutex_lock (&reqlock);	1009	LOCK (wrklock);
709	pthread_mutex_lock (&reslock);	1010	LOCK (reqlock);
		1011	LOCK (reslock);
710	#if !HAVE_PREADWRITE	1012	#if !HAVE_PREADWRITE
711	pthread_mutex_lock (&preadwritelock);	1013	LOCK (preadwritelock);
712	#endif	1014	#endif
713	#if !HAVE_READDIR_R	1015	#if !HAVE_READDIR_R
714	pthread_mutex_lock (&readdirlock);	1016	LOCK (readdirlock);
715	#endif	1017	#endif
716	}	1018	}
717		1019
718	static void atfork_parent (void)	1020	static void atfork_parent (void)
719	{	1021	{
720	#if !HAVE_READDIR_R	1022	#if !HAVE_READDIR_R
721	pthread_mutex_unlock (&readdirlock);	1023	UNLOCK (readdirlock);
722	#endif	1024	#endif
723	#if !HAVE_PREADWRITE	1025	#if !HAVE_PREADWRITE
724	pthread_mutex_unlock (&preadwritelock);	1026	UNLOCK (preadwritelock);
725	#endif	1027	#endif
726	pthread_mutex_unlock (&reslock);	1028	UNLOCK (reslock);
727	pthread_mutex_unlock (&reqlock);	1029	UNLOCK (reqlock);
		1030	UNLOCK (wrklock);
728	}	1031	}
729		1032
730	static void atfork_child (void)	1033	static void atfork_child (void)
731	{	1034	{
732	aio_req prv;	1035	aio_req prv;
733		1036
		1037	while (prv = reqq_shift (&req_queue))
		1038	req_free (prv);
		1039
		1040	while (prv = reqq_shift (&res_queue))
		1041	req_free (prv);
		1042
		1043	while (wrk_first.next != &wrk_first)
		1044	{
		1045	worker *wrk = wrk_first.next;
		1046
		1047	if (wrk->req)
		1048	req_free (wrk->req);
		1049
		1050	worker_clear (wrk);
		1051	worker_free (wrk);
		1052	}
		1053
734	started = 0;	1054	started = 0;
735		1055	nreqs = 0;
736	while (reqs)
737	{
738	prv = reqs;
739	reqs = prv->next;
740	free_req (prv);
741	}
742
743	reqs = reqe = 0;
744
745	while (ress)
746	{
747	prv = ress;
748	ress = prv->next;
749	free_req (prv);
750	}
751
752	ress = rese = 0;
753		1056
754	close (respipe [0]);	1057	close (respipe [0]);
755	close (respipe [1]);	1058	close (respipe [1]);
756	create_pipe ();	1059	create_pipe ();
757		1060
758	atfork_parent ();	1061	atfork_parent ();
759	}	1062	}
760		1063
761	#define dREQ \	1064	#define dREQ \
762	aio_req req; \	1065	aio_req req; \
		1066	int req_pri = next_pri; \
		1067	next_pri = DEFAULT_PRI + PRI_BIAS; \
763	\	1068	\
764	if (SvOK (callback) && !SvROK (callback)) \	1069	if (SvOK (callback) && !SvROK (callback)) \
765	croak ("clalback must be undef or of reference type"); \	1070	croak ("callback must be undef or of reference type"); \
766	\	1071	\
767	Newz (0, req, 1, aio_cb); \	1072	Newz (0, req, 1, aio_cb); \
768	if (!req) \	1073	if (!req) \
769	croak ("out of memory during aio_req allocation"); \	1074	croak ("out of memory during aio_req allocation"); \
770	\	1075	\
771	req->callback = newSVsv (callback);	1076	req->callback = newSVsv (callback); \
		1077	req->pri = req_pri
		1078
		1079	#define REQ_SEND \
		1080	req_send (req); \
		1081	\
		1082	if (GIMME_V != G_VOID) \
		1083	XPUSHs (req_sv (req, AIO_REQ_KLASS));
772		1084
773	MODULE = IO::AIO PACKAGE = IO::AIO	1085	MODULE = IO::AIO PACKAGE = IO::AIO
774		1086
775	PROTOTYPES: ENABLE	1087	PROTOTYPES: ENABLE
776		1088
777	BOOT:	1089	BOOT:
778	{	1090	{
		1091	HV *stash = gv_stashpv ("IO::AIO", 1);
		1092	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
		1093	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
		1094	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
		1095
779	create_pipe ();	1096	create_pipe ();
780	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	1097	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
781	}	1098	}
782		1099
783	void	1100	void
784	min_parallel(nthreads)	1101	min_parallel (nthreads)
785	int nthreads	1102	int nthreads
786	PROTOTYPE: $	1103	PROTOTYPE: $
787		1104
788	void	1105	void
789	max_parallel(nthreads)	1106	max_parallel (nthreads)
790	int nthreads	1107	int nthreads
791	PROTOTYPE: $	1108	PROTOTYPE: $
792		1109
793	int
794	max_outstanding(nreqs)
795	int nreqs
796	PROTOTYPE: $
797	CODE:
798	RETVAL = max_outstanding;
799	max_outstanding = nreqs;
800
801	void	1110	void
802	aio_open(pathname,flags,mode,callback=&PL_sv_undef)	1111	aio_open (pathname,flags,mode,callback=&PL_sv_undef)
803	SV * pathname	1112	SV * pathname
804	int flags	1113	int flags
805	int mode	1114	int mode
806	SV * callback	1115	SV * callback
807	PROTOTYPE: $$$;$	1116	PROTOTYPE: $$$;$
808	CODE:	1117	PPCODE:
809	{	1118	{
810	dREQ;	1119	dREQ;
811		1120
812	req->type = REQ_OPEN;	1121	req->type = REQ_OPEN;
813	req->data = newSVsv (pathname);	1122	req->data = newSVsv (pathname);
814	req->dataptr = SvPVbyte_nolen (req->data);	1123	req->dataptr = SvPVbyte_nolen (req->data);
815	req->fd = flags;	1124	req->fd = flags;
816	req->mode = mode;	1125	req->mode = mode;
817		1126
818	send_req (req);	1127	REQ_SEND;
819	}	1128	}
820		1129
821	void	1130	void
822	aio_close(fh,callback=&PL_sv_undef)	1131	aio_close (fh,callback=&PL_sv_undef)
823	SV * fh	1132	SV * fh
824	SV * callback	1133	SV * callback
825	PROTOTYPE: $;$	1134	PROTOTYPE: $;$
826	ALIAS:	1135	ALIAS:
827	aio_close = REQ_CLOSE	1136	aio_close = REQ_CLOSE
828	aio_fsync = REQ_FSYNC	1137	aio_fsync = REQ_FSYNC
829	aio_fdatasync = REQ_FDATASYNC	1138	aio_fdatasync = REQ_FDATASYNC
830	CODE:	1139	PPCODE:
831	{	1140	{
832	dREQ;	1141	dREQ;
833		1142
834	req->type = ix;	1143	req->type = ix;
835	req->fh = newSVsv (fh);	1144	req->fh = newSVsv (fh);
836	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1145	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
837		1146
838	send_req (req);	1147	REQ_SEND (req);
839	}	1148	}
840		1149
841	void	1150	void
842	aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1151	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
843	SV * fh	1152	SV * fh
844	UV offset	1153	UV offset
845	UV length	1154	UV length
846	SV * data	1155	SV * data
847	UV dataoffset	1156	UV dataoffset
848	SV * callback	1157	SV * callback
849	ALIAS:	1158	ALIAS:
850	aio_read = REQ_READ	1159	aio_read = REQ_READ
851	aio_write = REQ_WRITE	1160	aio_write = REQ_WRITE
852	PROTOTYPE: $$$$$;$	1161	PROTOTYPE: $$$$$;$
853	CODE:	1162	PPCODE:
854	{	1163	{
855	aio_req req;	1164	aio_req req;
856	STRLEN svlen;	1165	STRLEN svlen;
857	char *svptr = SvPVbyte (data, svlen);	1166	char *svptr = SvPVbyte (data, svlen);
858		1167
…		…
896	{	1205	{
897	SvREADONLY_on (data);	1206	SvREADONLY_on (data);
898	req->data2ptr = (void *)data;	1207	req->data2ptr = (void *)data;
899	}	1208	}
900		1209
901	send_req (req);	1210	REQ_SEND;
902	}	1211	}
903	}	1212	}
904		1213
905	void	1214	void
906	aio_sendfile(out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1215	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)
907	SV * out_fh	1216	SV * out_fh
908	SV * in_fh	1217	SV * in_fh
909	UV in_offset	1218	UV in_offset
910	UV length	1219	UV length
911	SV * callback	1220	SV * callback
912	PROTOTYPE: $$$$;$	1221	PROTOTYPE: $$$$;$
913	CODE:	1222	PPCODE:
914	{	1223	{
915	dREQ;	1224	dREQ;
916		1225
917	req->type = REQ_SENDFILE;	1226	req->type = REQ_SENDFILE;
918	req->fh = newSVsv (out_fh);	1227	req->fh = newSVsv (out_fh);
…		…
920	req->fh2 = newSVsv (in_fh);	1229	req->fh2 = newSVsv (in_fh);
921	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1230	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
922	req->offset = in_offset;	1231	req->offset = in_offset;
923	req->length = length;	1232	req->length = length;
924		1233
925	send_req (req);	1234	REQ_SEND;
926	}	1235	}
927		1236
928	void	1237	void
929	aio_readahead(fh,offset,length,callback=&PL_sv_undef)	1238	aio_readahead (fh,offset,length,callback=&PL_sv_undef)
930	SV * fh	1239	SV * fh
931	UV offset	1240	UV offset
932	IV length	1241	IV length
933	SV * callback	1242	SV * callback
934	PROTOTYPE: $$$;$	1243	PROTOTYPE: $$$;$
935	CODE:	1244	PPCODE:
936	{	1245	{
937	dREQ;	1246	dREQ;
938		1247
939	req->type = REQ_READAHEAD;	1248	req->type = REQ_READAHEAD;
940	req->fh = newSVsv (fh);	1249	req->fh = newSVsv (fh);
941	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1250	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
942	req->offset = offset;	1251	req->offset = offset;
943	req->length = length;	1252	req->length = length;
944		1253
945	send_req (req);	1254	REQ_SEND;
946	}	1255	}
947		1256
948	void	1257	void
949	aio_stat(fh_or_path,callback=&PL_sv_undef)	1258	aio_stat (fh_or_path,callback=&PL_sv_undef)
950	SV * fh_or_path	1259	SV * fh_or_path
951	SV * callback	1260	SV * callback
952	ALIAS:	1261	ALIAS:
953	aio_stat = REQ_STAT	1262	aio_stat = REQ_STAT
954	aio_lstat = REQ_LSTAT	1263	aio_lstat = REQ_LSTAT
955	CODE:	1264	PPCODE:
956	{	1265	{
957	dREQ;	1266	dREQ;
958		1267
959	New (0, req->statdata, 1, Stat_t);	1268	New (0, req->statdata, 1, Stat_t);
960	if (!req->statdata)	1269	if (!req->statdata)
961	{	1270	{
962	free_req (req);	1271	req_free (req);
963	croak ("out of memory during aio_req->statdata allocation");	1272	croak ("out of memory during aio_req->statdata allocation");
964	}	1273	}
965		1274
966	if (SvPOK (fh_or_path))	1275	if (SvPOK (fh_or_path))
967	{	1276	{
…		…
974	req->type = REQ_FSTAT;	1283	req->type = REQ_FSTAT;
975	req->fh = newSVsv (fh_or_path);	1284	req->fh = newSVsv (fh_or_path);
976	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1285	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
977	}	1286	}
978		1287
979	send_req (req);	1288	REQ_SEND;
980	}	1289	}
981		1290
982	void	1291	void
983	aio_unlink(pathname,callback=&PL_sv_undef)	1292	aio_unlink (pathname,callback=&PL_sv_undef)
984	SV * pathname	1293	SV * pathname
985	SV * callback	1294	SV * callback
986	ALIAS:	1295	ALIAS:
987	aio_unlink = REQ_UNLINK	1296	aio_unlink = REQ_UNLINK
988	aio_rmdir = REQ_RMDIR	1297	aio_rmdir = REQ_RMDIR
		1298	aio_readdir = REQ_READDIR
989	CODE:	1299	PPCODE:
990	{	1300	{
991	dREQ;	1301	dREQ;
992		1302
993	req->type = ix;	1303	req->type = ix;
994	req->data = newSVsv (pathname);	1304	req->data = newSVsv (pathname);
995	req->dataptr = SvPVbyte_nolen (req->data);	1305	req->dataptr = SvPVbyte_nolen (req->data);
996		1306
997	send_req (req);	1307	REQ_SEND;
998	}	1308	}
999		1309
1000	void	1310	void
1001	aio_symlink(oldpath,newpath,callback=&PL_sv_undef)	1311	aio_link (oldpath,newpath,callback=&PL_sv_undef)
1002	SV * oldpath	1312	SV * oldpath
1003	SV * newpath	1313	SV * newpath
1004	SV * callback	1314	SV * callback
		1315	ALIAS:
		1316	aio_link = REQ_LINK
		1317	aio_symlink = REQ_SYMLINK
		1318	aio_rename = REQ_RENAME
1005	CODE:	1319	PPCODE:
1006	{	1320	{
1007	dREQ;	1321	dREQ;
1008		1322
1009	req->type = REQ_SYMLINK;	1323	req->type = ix;
1010	req->fh = newSVsv (oldpath);	1324	req->fh = newSVsv (oldpath);
1011	req->data2ptr = SvPVbyte_nolen (req->fh);	1325	req->data2ptr = SvPVbyte_nolen (req->fh);
1012	req->data = newSVsv (newpath);	1326	req->data = newSVsv (newpath);
1013	req->dataptr = SvPVbyte_nolen (req->data);	1327	req->dataptr = SvPVbyte_nolen (req->data);
1014		1328
1015	send_req (req);	1329	REQ_SEND;
1016	}	1330	}
1017		1331
1018	void	1332	void
1019	aio_readdir(pathname,callback=&PL_sv_undef)	1333	aio_busy (delay,callback=&PL_sv_undef)
1020	SV * pathname	1334	double delay
1021	SV * callback	1335	SV * callback
1022	CODE:	1336	PPCODE:
1023	{	1337	{
1024	dREQ;	1338	dREQ;
1025		1339
		1340	req->type = REQ_BUSY;
		1341	req->fd = delay < 0. ? 0 : delay;
		1342	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
		1343
		1344	REQ_SEND;
		1345	}
		1346
		1347	void
		1348	aio_group (callback=&PL_sv_undef)
		1349	SV * callback
		1350	PROTOTYPE: ;$
		1351	PPCODE:
		1352	{
		1353	dREQ;
		1354
1026	req->type = REQ_READDIR;	1355	req->type = REQ_GROUP;
1027	req->data = newSVsv (pathname);	1356	req_send (req);
1028	req->dataptr = SvPVbyte_nolen (req->data);
1029
1030	send_req (req);
1031	}
1032		1357
		1358	XPUSHs (req_sv (req, AIO_GRP_KLASS));
		1359	}
		1360
1033	void	1361	void
		1362	aio_nop (callback=&PL_sv_undef)
		1363	SV * callback
		1364	PPCODE:
		1365	{
		1366	dREQ;
		1367
		1368	req->type = REQ_NOP;
		1369
		1370	REQ_SEND;
		1371	}
		1372
		1373	void
		1374	aioreq_pri (int pri = DEFAULT_PRI)
		1375	CODE:
		1376	if (pri < PRI_MIN) pri = PRI_MIN;
		1377	if (pri > PRI_MAX) pri = PRI_MAX;
		1378	next_pri = pri + PRI_BIAS;
		1379
		1380	void
		1381	aioreq_nice (int nice = 0)
		1382	CODE:
		1383	nice = next_pri - nice;
		1384	if (nice < PRI_MIN) nice = PRI_MIN;
		1385	if (nice > PRI_MAX) nice = PRI_MAX;
		1386	next_pri = nice + PRI_BIAS;
		1387
		1388	void
1034	flush()	1389	flush ()
1035	PROTOTYPE:	1390	PROTOTYPE:
1036	CODE:	1391	CODE:
1037	while (nreqs)	1392	while (nreqs)
1038	{	1393	{
1039	poll_wait ();	1394	poll_wait ();
…		…
1079	CODE:	1434	CODE:
1080	RETVAL = nreqs;	1435	RETVAL = nreqs;
1081	OUTPUT:	1436	OUTPUT:
1082	RETVAL	1437	RETVAL
1083		1438
		1439	PROTOTYPES: DISABLE
		1440
		1441	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
		1442
		1443	void
		1444	cancel (aio_req_ornot req)
		1445	CODE:
		1446	req_cancel (req);
		1447
		1448	void
		1449	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
		1450	CODE:
		1451	SvREFCNT_dec (req->callback);
		1452	req->callback = newSVsv (callback);
		1453
		1454	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
		1455
		1456	void
		1457	add (aio_req grp, ...)
		1458	PPCODE:
		1459	{
		1460	int i;
		1461	aio_req req;
		1462
		1463	if (grp->fd == 2)
		1464	croak ("cannot add requests to IO::AIO::GRP after the group finished");
		1465
		1466	for (i = 1; i < items; ++i )
		1467	{
		1468	if (GIMME_V != G_VOID)
		1469	XPUSHs (sv_2mortal (newSVsv (ST (i))));
		1470
		1471	req = SvAIO_REQ (ST (i));
		1472
		1473	if (req)
		1474	{
		1475	++grp->length;
		1476	req->grp = grp;
		1477
		1478	req->grp_prev = 0;
		1479	req->grp_next = grp->grp_first;
		1480
		1481	if (grp->grp_first)
		1482	grp->grp_first->grp_prev = req;
		1483
		1484	grp->grp_first = req;
		1485	}
		1486	}
		1487	}
		1488
		1489	void
		1490	cancel_subs (aio_req_ornot req)
		1491	CODE:
		1492	req_cancel_subs (req);
		1493
		1494	void
		1495	result (aio_req grp, ...)
		1496	CODE:
		1497	{
		1498	int i;
		1499	AV *av = newAV ();
		1500
		1501	for (i = 1; i < items; ++i )
		1502	av_push (av, newSVsv (ST (i)));
		1503
		1504	SvREFCNT_dec (grp->data);
		1505	grp->data = (SV *)av;
		1506	}
		1507
		1508	void
		1509	limit (aio_req grp, int limit)
		1510	CODE:
		1511	grp->fd2 = limit;
		1512	aio_grp_feed (grp);
		1513
		1514	void
		1515	feed (aio_req grp, SV *callback=&PL_sv_undef)
		1516	CODE:
		1517	{
		1518	SvREFCNT_dec (grp->fh2);
		1519	grp->fh2 = newSVsv (callback);
		1520
		1521	if (grp->fd2 <= 0)
		1522	grp->fd2 = 2;
		1523
		1524	aio_grp_feed (grp);
		1525	}
		1526

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