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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 1.71 by root, Tue Oct 24 16:35:04 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;	133	static int max_outstanding = 1<<30;
79	static int respipe [2];	134	static int respipe [2];
80		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
81	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	185	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
82	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;	186	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
83	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	187	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
84		188
85	static volatile aio_req reqs, reqe; /* queue start, queue end */	189	/*
86	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;
87		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);
88	static void free_req (aio_req req)	244	static void req_free (aio_req req);
89	{
90	if (req->data)
91	SvREFCNT_dec (req->data);
92		245
		246	/* must be called at most once */
		247	static SV *req_sv (aio_req req, const char *klass)
		248	{
93	if (req->fh)	249	if (!req->self)
94	SvREFCNT_dec (req->fh);	250	{
		251	req->self = (SV *)newHV ();
		252	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
		253	}
95		254
96	if (req->fh2)	255	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));
		256	}
		257
		258	static aio_req SvAIO_REQ (SV *sv)
		259	{
		260	MAGIC *mg;
		261
		262	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))
		263	croak ("object of class " AIO_REQ_KLASS " expected");
		264
		265	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
		266
		267	return mg ? (aio_req)mg->mg_ptr : 0;
		268	}
		269
		270	static void aio_grp_feed (aio_req grp)
		271	{
		272	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))
		273	{
		274	int old_len = grp->length;
		275
		276	if (grp->fh2 && SvOK (grp->fh2))
		277	{
		278	dSP;
		279
		280	ENTER;
		281	SAVETMPS;
		282	PUSHMARK (SP);
		283	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
		284	PUTBACK;
		285	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);
		286	SPAGAIN;
		287	FREETMPS;
		288	LEAVE;
		289	}
		290
		291	/* stop if no progress has been made */
		292	if (old_len == grp->length)
		293	{
97	SvREFCNT_dec (req->fh2);	294	SvREFCNT_dec (grp->fh2);
98		295	grp->fh2 = 0;
99	if (req->statdata)	296	break;
100	Safefree (req->statdata);	297	}
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	{	298	}
		299	}
		300
		301	static void aio_grp_dec (aio_req grp)
		302	{
		303	--grp->length;
		304
		305	/* call feeder, if applicable */
		306	aio_grp_feed (grp);
		307
		308	/* finish, if done */
		309	if (!grp->length && grp->fd)
		310	{
		311	req_invoke (grp);
		312	req_free (grp);
		313	}
		314	}
		315
		316	static void poll_wait ()
		317	{
116	fd_set rfd;	318	fd_set rfd;
		319
		320	while (nreqs)
		321	{
		322	int size;
		323	#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
		324	LOCK (reslock);
		325	#endif
		326	size = res_queue.size;
		327	#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
		328	UNLOCK (reslock);
		329	#endif
		330
		331	if (size)
		332	return;
		333
117	FD_ZERO(&rfd);	334	FD_ZERO(&rfd);
118	FD_SET(respipe [0], &rfd);	335	FD_SET(respipe [0], &rfd);
119		336
120	select (respipe [0] + 1, &rfd, 0, 0, 0);	337	select (respipe [0] + 1, &rfd, 0, 0, 0);
121	}	338	}
122	}	339	}
123		340
124	static int	341	static void req_invoke (aio_req req)
125	poll_cb ()	342	{
		343	dSP;
		344
		345	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
		346	{
		347	errno = req->errorno;
		348
		349	ENTER;
		350	SAVETMPS;
		351	PUSHMARK (SP);
		352	EXTEND (SP, 1);
		353
		354	switch (req->type)
		355	{
		356	case REQ_READDIR:
		357	{
		358	SV *rv = &PL_sv_undef;
		359
		360	if (req->result >= 0)
		361	{
		362	int i;
		363	char *buf = req->data2ptr;
		364	AV *av = newAV ();
		365
		366	av_extend (av, req->result - 1);
		367
		368	for (i = 0; i < req->result; ++i)
		369	{
		370	SV *sv = newSVpv (buf, 0);
		371
		372	av_store (av, i, sv);
		373	buf += SvCUR (sv) + 1;
		374	}
		375
		376	rv = sv_2mortal (newRV_noinc ((SV *)av));
		377	}
		378
		379	PUSHs (rv);
		380	}
		381	break;
		382
		383	case REQ_OPEN:
		384	{
		385	/* convert fd to fh */
		386	SV *fh;
		387
		388	PUSHs (sv_2mortal (newSViv (req->result)));
		389	PUTBACK;
		390	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
		391	SPAGAIN;
		392
		393	fh = SvREFCNT_inc (POPs);
		394
		395	PUSHMARK (SP);
		396	XPUSHs (sv_2mortal (fh));
		397	}
		398	break;
		399
		400	case REQ_GROUP:
		401	req->fd = 2; /* mark group as finished */
		402
		403	if (req->data)
		404	{
		405	int i;
		406	AV *av = (AV *)req->data;
		407
		408	EXTEND (SP, AvFILL (av) + 1);
		409	for (i = 0; i <= AvFILL (av); ++i)
		410	PUSHs (*av_fetch (av, i, 0));
		411	}
		412	break;
		413
		414	case REQ_NOP:
		415	case REQ_BUSY:
		416	break;
		417
		418	default:
		419	PUSHs (sv_2mortal (newSViv (req->result)));
		420	break;
		421	}
		422
		423
		424	PUTBACK;
		425	call_sv (req->callback, G_VOID | G_EVAL);
		426	SPAGAIN;
		427
		428	FREETMPS;
		429	LEAVE;
		430	}
		431
		432	if (req->grp)
		433	{
		434	aio_req grp = req->grp;
		435
		436	/* unlink request */
		437	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
		438	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
		439
		440	if (grp->grp_first == req)
		441	grp->grp_first = req->grp_next;
		442
		443	aio_grp_dec (grp);
		444	}
		445
		446	if (SvTRUE (ERRSV))
		447	{
		448	req_free (req);
		449	croak (0);
		450	}
		451	}
		452
		453	static void req_free (aio_req req)
		454	{
		455	if (req->self)
		456	{
		457	sv_unmagic (req->self, PERL_MAGIC_ext);
		458	SvREFCNT_dec (req->self);
		459	}
		460
		461	SvREFCNT_dec (req->data);
		462	SvREFCNT_dec (req->fh);
		463	SvREFCNT_dec (req->fh2);
		464	SvREFCNT_dec (req->callback);
		465	Safefree (req->statdata);
		466
		467	if (req->type == REQ_READDIR)
		468	free (req->data2ptr);
		469
		470	Safefree (req);
		471	}
		472
		473	static void req_cancel (aio_req req)
		474	{
		475	req->flags |= FLAG_CANCELLED;
		476
		477	if (req->type == REQ_GROUP)
		478	{
		479	aio_req sub;
		480
		481	for (sub = req->grp_first; sub; sub = sub->grp_next)
		482	req_cancel (sub);
		483	}
		484	}
		485
		486	static int poll_cb ()
126	{	487	{
127	dSP;	488	dSP;
128	int count = 0;	489	int count = 0;
129	int do_croak = 0;	490	int do_croak = 0;
130	aio_req req;	491	aio_req req;
131		492
132	for (;;)	493	for (;;)
133	{	494	{
134	pthread_mutex_lock (&reslock);	495	LOCK (reslock);
135	req = ress;	496	req = reqq_shift (&res_queue);
136		497
137	if (req)	498	if (req)
138	{	499	{
139	ress = req->next;
140
141	if (!ress)	500	if (!res_queue.size)
142	{	501	{
143	/* read any signals sent by the worker threads */	502	/* read any signals sent by the worker threads */
144	char buf [32];	503	char buf [32];
145	while (read (respipe [0], buf, 32) == 32)	504	while (read (respipe [0], buf, 32) == 32)
146	;	505	;
147
148	rese = 0;
149	}	506	}
150	}	507	}
151		508
152	pthread_mutex_unlock (&reslock);	509	UNLOCK (reslock);
153		510
154	if (!req)	511	if (!req)
155	break;	512	break;
156		513
157	nreqs--;	514	--nreqs;
158		515
159	if (req->type == REQ_QUIT)	516	if (req->type == REQ_QUIT)
160	started--;	517	started--;
		518	else if (req->type == REQ_GROUP && req->length)
		519	{
		520	req->fd = 1; /* mark request as delayed */
		521	continue;
		522	}
161	else	523	else
162	{	524	{
163	int errorno = errno;
164	errno = req->errorno;
165
166	if (req->type == REQ_READ)	525	if (req->type == REQ_READ)
167	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));	526	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
168		527
169	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))	528	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
170	SvREADONLY_off (req->data);	529	SvREADONLY_off (req->data);
…		…
174	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	533	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
175	PL_laststatval = req->result;	534	PL_laststatval = req->result;
176	PL_statcache = *(req->statdata);	535	PL_statcache = *(req->statdata);
177	}	536	}
178		537
179	ENTER;	538	req_invoke (req);
180	PUSHMARK (SP);
181		539
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++;	540	count++;
242	}	541	}
243		542
244	free_req (req);	543	req_free (req);
245	}	544	}
246		545
247	return count;	546	return count;
248	}	547	}
249		548
250	static void *aio_proc(void *arg);	549	static void *aio_proc(void *arg);
251		550
252	static void
253	start_thread (void)	551	static void start_thread (void)
254	{	552	{
		553	worker *wrk = calloc (1, sizeof (worker));
		554
		555	if (!wrk)
		556	croak ("unable to allocate worker thread data");
		557
255	sigset_t fullsigset, oldsigset;	558	sigset_t fullsigset, oldsigset;
256	pthread_t tid;
257	pthread_attr_t attr;	559	pthread_attr_t attr;
258		560
259	pthread_attr_init (&attr);	561	pthread_attr_init (&attr);
260	pthread_attr_setstacksize (&attr, STACKSIZE);	562	pthread_attr_setstacksize (&attr, STACKSIZE);
261	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);	563	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
262		564
263	sigfillset (&fullsigset);	565	sigfillset (&fullsigset);
		566
		567	LOCK (wrklock);
264	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);	568	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
265		569
266	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)	570	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
		571	{
		572	wrk->prev = &wrk_first;
		573	wrk->next = wrk_first.next;
		574	wrk_first.next->prev = wrk;
		575	wrk_first.next = wrk;
267	started++;	576	started++;
		577	}
		578	else
		579	free (wrk);
268		580
269	sigprocmask (SIG_SETMASK, &oldsigset, 0);	581	sigprocmask (SIG_SETMASK, &oldsigset, 0);
		582	UNLOCK (wrklock);
270	}	583	}
271		584
272	static void	585	static void req_send (aio_req req)
273	send_req (aio_req req)
274	{	586	{
275	while (started < wanted && nreqs >= started)	587	while (started < wanted && nreqs >= started)
276	start_thread ();	588	start_thread ();
277		589
278	nreqs++;	590	++nreqs;
279		591
280	pthread_mutex_lock (&reqlock);	592	LOCK (reqlock);
281		593	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);	594	pthread_cond_signal (&reqwait);
293	pthread_mutex_unlock (&reqlock);	595	UNLOCK (reqlock);
294		596
295	if (nreqs > max_outstanding)	597	if (nreqs > max_outstanding)
296	for (;;)	598	for (;;)
297	{	599	{
298	poll_cb ();	600	poll_cb ();
…		…
302		604
303	poll_wait ();	605	poll_wait ();
304	}	606	}
305	}	607	}
306		608
307	static void	609	static void end_thread (void)
308	end_thread (void)
309	{	610	{
310	aio_req req;	611	aio_req req;
		612
311	Newz (0, req, 1, aio_cb);	613	Newz (0, req, 1, aio_cb);
		614
312	req->type = REQ_QUIT;	615	req->type = REQ_QUIT;
		616	req->pri = PRI_MAX + PRI_BIAS;
313		617
314	send_req (req);	618	req_send (req);
315	}	619	}
316		620
317	static void min_parallel (int nthreads)	621	static void min_parallel (int nthreads)
318	{	622	{
319	if (wanted < nthreads)	623	if (wanted < nthreads)
…		…
364	* normal read/write by using a mutex. slows down execution a lot,	668	* normal read/write by using a mutex. slows down execution a lot,
365	* but that's your problem, not mine.	669	* but that's your problem, not mine.
366	*/	670	*/
367	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;	671	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
368		672
369	static ssize_t	673	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	{	674	{
372	ssize_t res;	675	ssize_t res;
373	off_t ooffset;	676	off_t ooffset;
374		677
375	pthread_mutex_lock (&preadwritelock);	678	LOCK (preadwritelock);
376	ooffset = lseek (fd, 0, SEEK_CUR);	679	ooffset = lseek (fd, 0, SEEK_CUR);
377	lseek (fd, offset, SEEK_SET);	680	lseek (fd, offset, SEEK_SET);
378	res = read (fd, buf, count);	681	res = read (fd, buf, count);
379	lseek (fd, ooffset, SEEK_SET);	682	lseek (fd, ooffset, SEEK_SET);
380	pthread_mutex_unlock (&preadwritelock);	683	UNLOCK (preadwritelock);
381		684
382	return res;	685	return res;
383	}	686	}
384		687
385	static ssize_t
386	pwrite (int fd, void *buf, size_t count, off_t offset)	688	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
387	{	689	{
388	ssize_t res;	690	ssize_t res;
389	off_t ooffset;	691	off_t ooffset;
390		692
391	pthread_mutex_lock (&preadwritelock);	693	LOCK (preadwritelock);
392	ooffset = lseek (fd, 0, SEEK_CUR);	694	ooffset = lseek (fd, 0, SEEK_CUR);
393	lseek (fd, offset, SEEK_SET);	695	lseek (fd, offset, SEEK_SET);
394	res = write (fd, buf, count);	696	res = write (fd, buf, count);
395	lseek (fd, offset, SEEK_SET);	697	lseek (fd, offset, SEEK_SET);
396	pthread_mutex_unlock (&preadwritelock);	698	UNLOCK (preadwritelock);
397		699
398	return res;	700	return res;
399	}	701	}
400	#endif	702	#endif
401		703
…		…
404	#endif	706	#endif
405		707
406	#if !HAVE_READAHEAD	708	#if !HAVE_READAHEAD
407	# define readahead aio_readahead	709	# define readahead aio_readahead
408		710
409	static ssize_t
410	readahead (int fd, off_t offset, size_t count)	711	static ssize_t readahead (int fd, off_t offset, size_t count)
411	{	712	{
412	char readahead_buf[4096];	713	dBUF;
413		714
414	while (count > 0)	715	while (count > 0)
415	{	716	{
416	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);	717	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
417		718
418	pread (fd, readahead_buf, len, offset);	719	pread (fd, aio_buf, len, offset);
419	offset += len;	720	offset += len;
420	count -= len;	721	count -= len;
421	}	722	}
422		723
423	errno = 0;	724	errno = 0;
…		…
427	#if !HAVE_READDIR_R	728	#if !HAVE_READDIR_R
428	# define readdir_r aio_readdir_r	729	# define readdir_r aio_readdir_r
429		730
430	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;	731	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
431		732
432	static int
433	readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)	733	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
434	{	734	{
435	struct dirent *e;	735	struct dirent *e;
436	int errorno;	736	int errorno;
437		737
438	pthread_mutex_lock (&readdirlock);	738	LOCK (readdirlock);
439		739
440	e = readdir (dirp);	740	e = readdir (dirp);
441	errorno = errno;	741	errorno = errno;
442		742
443	if (e)	743	if (e)
…		…
446	strcpy (ent->d_name, e->d_name);	746	strcpy (ent->d_name, e->d_name);
447	}	747	}
448	else	748	else
449	*res = 0;	749	*res = 0;
450		750
451	pthread_mutex_unlock (&readdirlock);	751	UNLOCK (readdirlock);
452		752
453	errno = errorno;	753	errno = errorno;
454	return e ? 0 : -1;	754	return e ? 0 : -1;
455	}	755	}
456	#endif	756	#endif
457		757
458	/* sendfile always needs emulation */	758	/* sendfile always needs emulation */
459	static ssize_t
460	sendfile_ (int ofd, int ifd, off_t offset, size_t count)	759	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
461	{	760	{
462	ssize_t res;	761	ssize_t res;
463		762
464	if (!count)	763	if (!count)
465	return 0;	764	return 0;
…		…
499		798
500	if (res < 0 && sbytes)	799	if (res < 0 && sbytes)
501	res = sbytes;	800	res = sbytes;
502	}	801	}
503		802
		803	# endif
504	# else	804	#else
505	res = -1;	805	res = -1;
506	errno = ENOSYS;	806	errno = ENOSYS;
507	# endif
508	#endif	807	#endif
509		808
510	if (res < 0	809	if (res < 0
511	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK	810	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
512	#if __solaris	811	#if __solaris
…		…
514	#endif	813	#endif
515	)	814	)
516	)	815	)
517	{	816	{
518	/* emulate sendfile. this is a major pain in the ass */	817	/* emulate sendfile. this is a major pain in the ass */
519	char buf[4096];	818	dBUF;
		819
520	res = 0;	820	res = 0;
521		821
522	for (;;)	822	while (count)
523	{	823	{
524	ssize_t cnt;	824	ssize_t cnt;
525		825
526	cnt = pread (ifd, buf, 4096, offset);	826	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
527		827
528	if (cnt <= 0)	828	if (cnt <= 0)
529	{	829	{
530	if (cnt && !res) res = -1;	830	if (cnt && !res) res = -1;
531	break;	831	break;
532	}	832	}
533		833
534	cnt = write (ofd, buf, cnt);	834	cnt = write (ofd, aio_buf, cnt);
535		835
536	if (cnt <= 0)	836	if (cnt <= 0)
537	{	837	{
538	if (cnt && !res) res = -1;	838	if (cnt && !res) res = -1;
539	break;	839	break;
540	}	840	}
541		841
542	offset += cnt;	842	offset += cnt;
543	res += cnt;	843	res += cnt;
		844	count -= cnt;
544	}	845	}
545	}	846	}
546		847
547	return res;	848	return res;
548	}	849	}
549		850
550	/* read a full directory */	851	/* read a full directory */
551	static int	852	static void scandir_ (aio_req req, worker *self)
552	scandir_ (const char *path, void **namesp)
553	{	853	{
554	DIR *dirp = opendir (path);	854	DIR *dirp;
555	union	855	union
556	{	856	{
557	struct dirent d;	857	struct dirent d;
558	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];	858	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
559	} u;	859	} *u;
560	struct dirent *entp;	860	struct dirent *entp;
561	char *name, *names;	861	char *name, *names;
562	int memlen = 4096;	862	int memlen = 4096;
563	int memofs = 0;	863	int memofs = 0;
564	int res = 0;	864	int res = 0;
565	int errorno;	865	int errorno;
566		866
567	if (!dirp)	867	LOCK (wrklock);
568	return -1;	868	self->dirp = dirp = opendir (req->dataptr);
		869	self->dbuf = u = malloc (sizeof (*u));
		870	UNLOCK (wrklock);
569		871
570	names = malloc (memlen);	872	req->data2ptr = names = malloc (memlen);
571		873
		874	if (dirp && u && names)
572	for (;;)	875	for (;;)
573	{	876	{
		877	errno = 0;
574	errno = 0, readdir_r (dirp, &u.d, &entp);	878	readdir_r (dirp, &u->d, &entp);
575		879
576	if (!entp)	880	if (!entp)
577	break;	881	break;
578		882
579	name = entp->d_name;	883	name = entp->d_name;
580		884
581	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))	885	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
582	{	886	{
583	int len = strlen (name) + 1;	887	int len = strlen (name) + 1;
584		888
585	res++;	889	res++;
586		890
587	while (memofs + len > memlen)	891	while (memofs + len > memlen)
588	{	892	{
589	memlen *= 2;	893	memlen *= 2;
		894	LOCK (wrklock);
590	names = realloc (names, memlen);	895	req->data2ptr = names = realloc (names, memlen);
		896	UNLOCK (wrklock);
		897
591	if (!names)	898	if (!names)
592	break;	899	break;
593	}	900	}
594		901
595	memcpy (names + memofs, name, len);	902	memcpy (names + memofs, name, len);
596	memofs += len;	903	memofs += len;
597	}	904	}
598	}	905	}
599		906
600	errorno = errno;
601	closedir (dirp);
602
603	if (errorno)	907	if (errno)
604	{
605	free (names);
606	errno = errorno;
607	res = -1;	908	res = -1;
608	}	909
609		910	req->result = res;
610	*namesp = (void *)names;
611	return res;
612	}	911	}
613		912
614	/*****************************************************************************/	913	/*****************************************************************************/
615		914
616	static void *
617	aio_proc (void *thr_arg)	915	static void *aio_proc (void *thr_arg)
618	{	916	{
619	aio_req req;	917	aio_req req;
620	int type;	918	int type;
		919	worker *self = (worker *)thr_arg;
621		920
622	do	921	do
623	{	922	{
624	pthread_mutex_lock (&reqlock);	923	LOCK (reqlock);
625		924
626	for (;;)	925	for (;;)
627	{	926	{
628	req = reqs;	927	self->req = req = reqq_shift (&req_queue);
629
630	if (reqs)
631	{
632	reqs = reqs->next;
633	if (!reqs) reqe = 0;
634	}
635		928
636	if (req)	929	if (req)
637	break;	930	break;
638		931
639	pthread_cond_wait (&reqwait, &reqlock);	932	pthread_cond_wait (&reqwait, &reqlock);
640	}	933	}
641		934
642	pthread_mutex_unlock (&reqlock);	935	UNLOCK (reqlock);
643		936
644	errno = 0; /* strictly unnecessary */	937	errno = 0; /* strictly unnecessary */
		938	type = req->type; /* remember type for QUIT check */
645		939
646	type = req->type;	940	if (!(req->flags & FLAG_CANCELLED))
647
648	switch (type)	941	switch (type)
649	{	942	{
650	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;	943	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;	944	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
652		945
653	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	946	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;	947	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length, self); break;
655		948
656	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	949	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
657	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	950	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
658	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	951	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
659		952
660	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;	953	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
661	case REQ_CLOSE: req->result = close (req->fd); break;	954	case REQ_CLOSE: req->result = close (req->fd); break;
662	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	955	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
663	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;	956	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
		957	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
		958	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
664	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;	959	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
665		960
666	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	961	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
667	case REQ_FSYNC: req->result = fsync (req->fd); break;	962	case REQ_FSYNC: req->result = fsync (req->fd); break;
668	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;	963	case REQ_READDIR: scandir_ (req, self); break;
669		964
		965	case REQ_BUSY:
		966	{
		967	struct timeval tv;
		968
		969	tv.tv_sec = req->fd;
		970	tv.tv_usec = req->fd2;
		971
		972	req->result = select (0, 0, 0, 0, &tv);
		973	}
		974
		975	case REQ_GROUP:
		976	case REQ_NOP:
670	case REQ_QUIT:	977	case REQ_QUIT:
671	break;	978	break;
672		979
673	default:	980	default:
674	req->result = ENOSYS;	981	req->result = ENOSYS;
675	break;	982	break;
676	}	983	}
677		984
678	req->errorno = errno;	985	req->errorno = errno;
679		986
680	pthread_mutex_lock (&reslock);	987	LOCK (reslock);
681		988
682	req->next = 0;	989	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 */	990	/* write a dummy byte to the pipe so fh becomes ready */
694	write (respipe [1], &respipe, 1);	991	write (respipe [1], &respipe, 1);
695	}
696		992
697	pthread_mutex_unlock (&reslock);	993	self->req = 0;
		994	worker_clear (self);
		995
		996	UNLOCK (reslock);
698	}	997	}
699	while (type != REQ_QUIT);	998	while (type != REQ_QUIT);
700		999
		1000	LOCK (wrklock);
		1001	worker_free (self);
		1002	UNLOCK (wrklock);
		1003
701	return 0;	1004	return 0;
702	}	1005	}
703		1006
704	/*****************************************************************************/	1007	/*****************************************************************************/
705		1008
706	static void atfork_prepare (void)	1009	static void atfork_prepare (void)
707	{	1010	{
708	pthread_mutex_lock (&reqlock);	1011	LOCK (wrklock);
709	pthread_mutex_lock (&reslock);	1012	LOCK (reqlock);
		1013	LOCK (reslock);
710	#if !HAVE_PREADWRITE	1014	#if !HAVE_PREADWRITE
711	pthread_mutex_lock (&preadwritelock);	1015	LOCK (preadwritelock);
712	#endif	1016	#endif
713	#if !HAVE_READDIR_R	1017	#if !HAVE_READDIR_R
714	pthread_mutex_lock (&readdirlock);	1018	LOCK (readdirlock);
715	#endif	1019	#endif
716	}	1020	}
717		1021
718	static void atfork_parent (void)	1022	static void atfork_parent (void)
719	{	1023	{
720	#if !HAVE_READDIR_R	1024	#if !HAVE_READDIR_R
721	pthread_mutex_unlock (&readdirlock);	1025	UNLOCK (readdirlock);
722	#endif	1026	#endif
723	#if !HAVE_PREADWRITE	1027	#if !HAVE_PREADWRITE
724	pthread_mutex_unlock (&preadwritelock);	1028	UNLOCK (preadwritelock);
725	#endif	1029	#endif
726	pthread_mutex_unlock (&reslock);	1030	UNLOCK (reslock);
727	pthread_mutex_unlock (&reqlock);	1031	UNLOCK (reqlock);
		1032	UNLOCK (wrklock);
728	}	1033	}
729		1034
730	static void atfork_child (void)	1035	static void atfork_child (void)
731	{	1036	{
732	aio_req prv;	1037	aio_req prv;
733		1038
		1039	while (prv = reqq_shift (&req_queue))
		1040	req_free (prv);
		1041
		1042	while (prv = reqq_shift (&res_queue))
		1043	req_free (prv);
		1044
		1045	while (wrk_first.next != &wrk_first)
		1046	{
		1047	worker *wrk = wrk_first.next;
		1048
		1049	if (wrk->req)
		1050	req_free (wrk->req);
		1051
		1052	worker_clear (wrk);
		1053	worker_free (wrk);
		1054	}
		1055
734	started = 0;	1056	started = 0;
735		1057	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		1058
754	close (respipe [0]);	1059	close (respipe [0]);
755	close (respipe [1]);	1060	close (respipe [1]);
756	create_pipe ();	1061	create_pipe ();
757		1062
758	atfork_parent ();	1063	atfork_parent ();
759	}	1064	}
760		1065
761	#define dREQ \	1066	#define dREQ \
762	aio_req req; \	1067	aio_req req; \
		1068	int req_pri = next_pri; \
		1069	next_pri = DEFAULT_PRI + PRI_BIAS; \
763	\	1070	\
764	if (SvOK (callback) && !SvROK (callback)) \	1071	if (SvOK (callback) && !SvROK (callback)) \
765	croak ("clalback must be undef or of reference type"); \	1072	croak ("callback must be undef or of reference type"); \
766	\	1073	\
767	Newz (0, req, 1, aio_cb); \	1074	Newz (0, req, 1, aio_cb); \
768	if (!req) \	1075	if (!req) \
769	croak ("out of memory during aio_req allocation"); \	1076	croak ("out of memory during aio_req allocation"); \
770	\	1077	\
771	req->callback = newSVsv (callback);	1078	req->callback = newSVsv (callback); \
		1079	req->pri = req_pri
		1080
		1081	#define REQ_SEND \
		1082	req_send (req); \
		1083	\
		1084	if (GIMME_V != G_VOID) \
		1085	XPUSHs (req_sv (req, AIO_REQ_KLASS));
772		1086
773	MODULE = IO::AIO PACKAGE = IO::AIO	1087	MODULE = IO::AIO PACKAGE = IO::AIO
774		1088
775	PROTOTYPES: ENABLE	1089	PROTOTYPES: ENABLE
776		1090
777	BOOT:	1091	BOOT:
778	{	1092	{
		1093	HV *stash = gv_stashpv ("IO::AIO", 1);
		1094	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
		1095	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
		1096	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
		1097
779	create_pipe ();	1098	create_pipe ();
780	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	1099	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
781	}	1100	}
782		1101
783	void	1102	void
784	min_parallel(nthreads)	1103	min_parallel (nthreads)
785	int nthreads	1104	int nthreads
786	PROTOTYPE: $	1105	PROTOTYPE: $
787		1106
788	void	1107	void
789	max_parallel(nthreads)	1108	max_parallel (nthreads)
790	int nthreads	1109	int nthreads
791	PROTOTYPE: $	1110	PROTOTYPE: $
792		1111
793	int	1112	int
794	max_outstanding(nreqs)	1113	max_outstanding (nreqs)
795	int nreqs	1114	int nreqs
796	PROTOTYPE: $	1115	PROTOTYPE: $
797	CODE:	1116	CODE:
798	RETVAL = max_outstanding;	1117	RETVAL = max_outstanding;
799	max_outstanding = nreqs;	1118	max_outstanding = nreqs;
800		1119
801	void	1120	void
802	aio_open(pathname,flags,mode,callback=&PL_sv_undef)	1121	aio_open (pathname,flags,mode,callback=&PL_sv_undef)
803	SV * pathname	1122	SV * pathname
804	int flags	1123	int flags
805	int mode	1124	int mode
806	SV * callback	1125	SV * callback
807	PROTOTYPE: $$$;$	1126	PROTOTYPE: $$$;$
808	CODE:	1127	PPCODE:
809	{	1128	{
810	dREQ;	1129	dREQ;
811		1130
812	req->type = REQ_OPEN;	1131	req->type = REQ_OPEN;
813	req->data = newSVsv (pathname);	1132	req->data = newSVsv (pathname);
814	req->dataptr = SvPVbyte_nolen (req->data);	1133	req->dataptr = SvPVbyte_nolen (req->data);
815	req->fd = flags;	1134	req->fd = flags;
816	req->mode = mode;	1135	req->mode = mode;
817		1136
818	send_req (req);	1137	REQ_SEND;
819	}	1138	}
820		1139
821	void	1140	void
822	aio_close(fh,callback=&PL_sv_undef)	1141	aio_close (fh,callback=&PL_sv_undef)
823	SV * fh	1142	SV * fh
824	SV * callback	1143	SV * callback
825	PROTOTYPE: $;$	1144	PROTOTYPE: $;$
826	ALIAS:	1145	ALIAS:
827	aio_close = REQ_CLOSE	1146	aio_close = REQ_CLOSE
828	aio_fsync = REQ_FSYNC	1147	aio_fsync = REQ_FSYNC
829	aio_fdatasync = REQ_FDATASYNC	1148	aio_fdatasync = REQ_FDATASYNC
830	CODE:	1149	PPCODE:
831	{	1150	{
832	dREQ;	1151	dREQ;
833		1152
834	req->type = ix;	1153	req->type = ix;
835	req->fh = newSVsv (fh);	1154	req->fh = newSVsv (fh);
836	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1155	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
837		1156
838	send_req (req);	1157	REQ_SEND (req);
839	}	1158	}
840		1159
841	void	1160	void
842	aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1161	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
843	SV * fh	1162	SV * fh
844	UV offset	1163	UV offset
845	UV length	1164	UV length
846	SV * data	1165	SV * data
847	UV dataoffset	1166	UV dataoffset
848	SV * callback	1167	SV * callback
849	ALIAS:	1168	ALIAS:
850	aio_read = REQ_READ	1169	aio_read = REQ_READ
851	aio_write = REQ_WRITE	1170	aio_write = REQ_WRITE
852	PROTOTYPE: $$$$$;$	1171	PROTOTYPE: $$$$$;$
853	CODE:	1172	PPCODE:
854	{	1173	{
855	aio_req req;	1174	aio_req req;
856	STRLEN svlen;	1175	STRLEN svlen;
857	char *svptr = SvPVbyte (data, svlen);	1176	char *svptr = SvPVbyte (data, svlen);
858		1177
…		…
896	{	1215	{
897	SvREADONLY_on (data);	1216	SvREADONLY_on (data);
898	req->data2ptr = (void *)data;	1217	req->data2ptr = (void *)data;
899	}	1218	}
900		1219
901	send_req (req);	1220	REQ_SEND;
902	}	1221	}
903	}	1222	}
904		1223
905	void	1224	void
906	aio_sendfile(out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1225	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)
907	SV * out_fh	1226	SV * out_fh
908	SV * in_fh	1227	SV * in_fh
909	UV in_offset	1228	UV in_offset
910	UV length	1229	UV length
911	SV * callback	1230	SV * callback
912	PROTOTYPE: $$$$;$	1231	PROTOTYPE: $$$$;$
913	CODE:	1232	PPCODE:
914	{	1233	{
915	dREQ;	1234	dREQ;
916		1235
917	req->type = REQ_SENDFILE;	1236	req->type = REQ_SENDFILE;
918	req->fh = newSVsv (out_fh);	1237	req->fh = newSVsv (out_fh);
…		…
920	req->fh2 = newSVsv (in_fh);	1239	req->fh2 = newSVsv (in_fh);
921	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1240	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
922	req->offset = in_offset;	1241	req->offset = in_offset;
923	req->length = length;	1242	req->length = length;
924		1243
925	send_req (req);	1244	REQ_SEND;
926	}	1245	}
927		1246
928	void	1247	void
929	aio_readahead(fh,offset,length,callback=&PL_sv_undef)	1248	aio_readahead (fh,offset,length,callback=&PL_sv_undef)
930	SV * fh	1249	SV * fh
931	UV offset	1250	UV offset
932	IV length	1251	IV length
933	SV * callback	1252	SV * callback
934	PROTOTYPE: $$$;$	1253	PROTOTYPE: $$$;$
935	CODE:	1254	PPCODE:
936	{	1255	{
937	dREQ;	1256	dREQ;
938		1257
939	req->type = REQ_READAHEAD;	1258	req->type = REQ_READAHEAD;
940	req->fh = newSVsv (fh);	1259	req->fh = newSVsv (fh);
941	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1260	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
942	req->offset = offset;	1261	req->offset = offset;
943	req->length = length;	1262	req->length = length;
944		1263
945	send_req (req);	1264	REQ_SEND;
946	}	1265	}
947		1266
948	void	1267	void
949	aio_stat(fh_or_path,callback=&PL_sv_undef)	1268	aio_stat (fh_or_path,callback=&PL_sv_undef)
950	SV * fh_or_path	1269	SV * fh_or_path
951	SV * callback	1270	SV * callback
952	ALIAS:	1271	ALIAS:
953	aio_stat = REQ_STAT	1272	aio_stat = REQ_STAT
954	aio_lstat = REQ_LSTAT	1273	aio_lstat = REQ_LSTAT
955	CODE:	1274	PPCODE:
956	{	1275	{
957	dREQ;	1276	dREQ;
958		1277
959	New (0, req->statdata, 1, Stat_t);	1278	New (0, req->statdata, 1, Stat_t);
960	if (!req->statdata)	1279	if (!req->statdata)
961	{	1280	{
962	free_req (req);	1281	req_free (req);
963	croak ("out of memory during aio_req->statdata allocation");	1282	croak ("out of memory during aio_req->statdata allocation");
964	}	1283	}
965		1284
966	if (SvPOK (fh_or_path))	1285	if (SvPOK (fh_or_path))
967	{	1286	{
…		…
974	req->type = REQ_FSTAT;	1293	req->type = REQ_FSTAT;
975	req->fh = newSVsv (fh_or_path);	1294	req->fh = newSVsv (fh_or_path);
976	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1295	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
977	}	1296	}
978		1297
979	send_req (req);	1298	REQ_SEND;
980	}	1299	}
981		1300
982	void	1301	void
983	aio_unlink(pathname,callback=&PL_sv_undef)	1302	aio_unlink (pathname,callback=&PL_sv_undef)
984	SV * pathname	1303	SV * pathname
985	SV * callback	1304	SV * callback
986	ALIAS:	1305	ALIAS:
987	aio_unlink = REQ_UNLINK	1306	aio_unlink = REQ_UNLINK
988	aio_rmdir = REQ_RMDIR	1307	aio_rmdir = REQ_RMDIR
		1308	aio_readdir = REQ_READDIR
989	CODE:	1309	PPCODE:
990	{	1310	{
991	dREQ;	1311	dREQ;
992		1312
993	req->type = ix;	1313	req->type = ix;
994	req->data = newSVsv (pathname);	1314	req->data = newSVsv (pathname);
995	req->dataptr = SvPVbyte_nolen (req->data);	1315	req->dataptr = SvPVbyte_nolen (req->data);
996		1316
997	send_req (req);	1317	REQ_SEND;
998	}	1318	}
999		1319
1000	void	1320	void
1001	aio_symlink(oldpath,newpath,callback=&PL_sv_undef)	1321	aio_link (oldpath,newpath,callback=&PL_sv_undef)
1002	SV * oldpath	1322	SV * oldpath
1003	SV * newpath	1323	SV * newpath
1004	SV * callback	1324	SV * callback
		1325	ALIAS:
		1326	aio_link = REQ_LINK
		1327	aio_symlink = REQ_SYMLINK
		1328	aio_rename = REQ_RENAME
1005	CODE:	1329	PPCODE:
1006	{	1330	{
1007	dREQ;	1331	dREQ;
1008		1332
1009	req->type = REQ_SYMLINK;	1333	req->type = ix;
1010	req->fh = newSVsv (oldpath);	1334	req->fh = newSVsv (oldpath);
1011	req->data2ptr = SvPVbyte_nolen (req->fh);	1335	req->data2ptr = SvPVbyte_nolen (req->fh);
1012	req->data = newSVsv (newpath);	1336	req->data = newSVsv (newpath);
1013	req->dataptr = SvPVbyte_nolen (req->data);	1337	req->dataptr = SvPVbyte_nolen (req->data);
1014		1338
1015	send_req (req);	1339	REQ_SEND;
1016	}	1340	}
1017		1341
1018	void	1342	void
1019	aio_readdir(pathname,callback=&PL_sv_undef)	1343	aio_busy (delay,callback=&PL_sv_undef)
1020	SV * pathname	1344	double delay
1021	SV * callback	1345	SV * callback
1022	CODE:	1346	PPCODE:
1023	{	1347	{
1024	dREQ;	1348	dREQ;
1025		1349
		1350	req->type = REQ_BUSY;
		1351	req->fd = delay < 0. ? 0 : delay;
		1352	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
		1353
		1354	REQ_SEND;
		1355	}
		1356
		1357	void
		1358	aio_group (callback=&PL_sv_undef)
		1359	SV * callback
		1360	PROTOTYPE: ;$
		1361	PPCODE:
		1362	{
		1363	dREQ;
		1364
1026	req->type = REQ_READDIR;	1365	req->type = REQ_GROUP;
1027	req->data = newSVsv (pathname);	1366	req_send (req);
1028	req->dataptr = SvPVbyte_nolen (req->data);
1029
1030	send_req (req);
1031	}
1032		1367
		1368	XPUSHs (req_sv (req, AIO_GRP_KLASS));
		1369	}
		1370
1033	void	1371	void
		1372	aio_nop (callback=&PL_sv_undef)
		1373	SV * callback
		1374	PPCODE:
		1375	{
		1376	dREQ;
		1377
		1378	req->type = REQ_NOP;
		1379
		1380	REQ_SEND;
		1381	}
		1382
		1383	void
		1384	aioreq_pri (int pri = DEFAULT_PRI)
		1385	CODE:
		1386	if (pri < PRI_MIN) pri = PRI_MIN;
		1387	if (pri > PRI_MAX) pri = PRI_MAX;
		1388	next_pri = pri + PRI_BIAS;
		1389
		1390	void
		1391	aioreq_nice (int nice = 0)
		1392	CODE:
		1393	nice = next_pri - nice;
		1394	if (nice < PRI_MIN) nice = PRI_MIN;
		1395	if (nice > PRI_MAX) nice = PRI_MAX;
		1396	next_pri = nice + PRI_BIAS;
		1397
		1398	void
1034	flush()	1399	flush ()
1035	PROTOTYPE:	1400	PROTOTYPE:
1036	CODE:	1401	CODE:
1037	while (nreqs)	1402	while (nreqs)
1038	{	1403	{
1039	poll_wait ();	1404	poll_wait ();
…		…
1079	CODE:	1444	CODE:
1080	RETVAL = nreqs;	1445	RETVAL = nreqs;
1081	OUTPUT:	1446	OUTPUT:
1082	RETVAL	1447	RETVAL
1083		1448
		1449	PROTOTYPES: DISABLE
		1450
		1451	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
		1452
		1453	void
		1454	cancel (aio_req_ornot req)
		1455	CODE:
		1456	req_cancel (req);
		1457
		1458	void
		1459	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
		1460	CODE:
		1461	SvREFCNT_dec (req->callback);
		1462	req->callback = newSVsv (callback);
		1463
		1464	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
		1465
		1466	void
		1467	add (aio_req grp, ...)
		1468	PPCODE:
		1469	{
		1470	int i;
		1471	aio_req req;
		1472
		1473	if (grp->fd == 2)
		1474	croak ("cannot add requests to IO::AIO::GRP after the group finished");
		1475
		1476	for (i = 1; i < items; ++i )
		1477	{
		1478	if (GIMME_V != G_VOID)
		1479	XPUSHs (sv_2mortal (newSVsv (ST (i))));
		1480
		1481	req = SvAIO_REQ (ST (i));
		1482
		1483	if (req)
		1484	{
		1485	++grp->length;
		1486	req->grp = grp;
		1487
		1488	req->grp_prev = 0;
		1489	req->grp_next = grp->grp_first;
		1490
		1491	if (grp->grp_first)
		1492	grp->grp_first->grp_prev = req;
		1493
		1494	grp->grp_first = req;
		1495	}
		1496	}
		1497	}
		1498
		1499	void
		1500	result (aio_req grp, ...)
		1501	CODE:
		1502	{
		1503	int i;
		1504	AV *av = newAV ();
		1505
		1506	for (i = 1; i < items; ++i )
		1507	av_push (av, newSVsv (ST (i)));
		1508
		1509	SvREFCNT_dec (grp->data);
		1510	grp->data = (SV *)av;
		1511	}
		1512
		1513	void
		1514	limit (aio_req grp, int limit)
		1515	CODE:
		1516	grp->fd2 = limit;
		1517	aio_grp_feed (grp);
		1518
		1519	void
		1520	feed (aio_req grp, SV *callback=&PL_sv_undef)
		1521	CODE:
		1522	{
		1523	SvREFCNT_dec (grp->fh2);
		1524	grp->fh2 = newSVsv (callback);
		1525
		1526	if (grp->fd2 <= 0)
		1527	grp->fd2 = 2;
		1528
		1529	aio_grp_feed (grp);
		1530	}
		1531

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