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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.40 by root, Sat Jun 24 16:27:02 2006 UTC vs.
Revision 1.78 by root, Thu Oct 26 14:35:34 2006 UTC

		1	/* solaris */
		2	#define _POSIX_PTHREAD_SEMANTICS 1
		3
		4	#if __linux && !defined(_GNU_SOURCE)
		5	# define _GNU_SOURCE
		6	#endif
		7
		8	/* just in case */
1	#define _REENTRANT 1	9	#define _REENTRANT 1
		10
2	#include <errno.h>	11	#include <errno.h>
3		12
4	#include "EXTERN.h"	13	#include "EXTERN.h"
5	#include "perl.h"	14	#include "perl.h"
6	#include "XSUB.h"	15	#include "XSUB.h"
…		…
8	#include "autoconf/config.h"	17	#include "autoconf/config.h"
9		18
10	#include <pthread.h>	19	#include <pthread.h>
11		20
12	#include <stddef.h>	21	#include <stddef.h>
		22	#include <errno.h>
		23	#include <sys/time.h>
		24	#include <sys/select.h>
13	#include <sys/types.h>	25	#include <sys/types.h>
14	#include <sys/stat.h>	26	#include <sys/stat.h>
15	#include <limits.h>	27	#include <limits.h>
16	#include <unistd.h>	28	#include <unistd.h>
17	#include <fcntl.h>	29	#include <fcntl.h>
…		…
36	/* used for struct dirent, AIX doesn't provide it */	48	/* used for struct dirent, AIX doesn't provide it */
37	#ifndef NAME_MAX	49	#ifndef NAME_MAX
38	# define NAME_MAX 4096	50	# define NAME_MAX 4096
39	#endif	51	#endif
40		52
		53	#ifndef PTHREAD_STACK_MIN
		54	/* care for broken platforms, e.g. windows */
		55	# define PTHREAD_STACK_MIN 16384
		56	#endif
		57
41	#if __ia64	58	#if __ia64
42	# define STACKSIZE 65536	59	# define STACKSIZE 65536
		60	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
		61	# define STACKSIZE PTHREAD_STACK_MIN
43	#else	62	#else
44	# define STACKSIZE 8192	63	# define STACKSIZE 16384
45	#endif	64	#endif
		65
		66	/* buffer size for various temporary buffers */
		67	#define AIO_BUFSIZE 65536
		68
		69	#define dBUF \
		70	char *aio_buf; \
		71	LOCK (wrklock); \
		72	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
		73	UNLOCK (wrklock); \
		74	if (!aio_buf) \
		75	return -1;
46		76
47	enum {	77	enum {
48	REQ_QUIT,	78	REQ_QUIT,
49	REQ_OPEN, REQ_CLOSE,	79	REQ_OPEN, REQ_CLOSE,
50	REQ_READ, REQ_WRITE, REQ_READAHEAD,	80	REQ_READ, REQ_WRITE, REQ_READAHEAD,
…		…
52	REQ_STAT, REQ_LSTAT, REQ_FSTAT,	82	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
53	REQ_FSYNC, REQ_FDATASYNC,	83	REQ_FSYNC, REQ_FDATASYNC,
54	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,	84	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
55	REQ_READDIR,	85	REQ_READDIR,
56	REQ_LINK, REQ_SYMLINK,	86	REQ_LINK, REQ_SYMLINK,
		87	REQ_GROUP, REQ_NOP,
		88	REQ_BUSY,
57	};	89	};
58		90
		91	#define AIO_REQ_KLASS "IO::AIO::REQ"
		92	#define AIO_GRP_KLASS "IO::AIO::GRP"
		93
59	typedef struct aio_cb {	94	typedef struct aio_cb
		95	{
60	struct aio_cb *volatile next;	96	struct aio_cb *volatile next;
61		97
62	int type;	98	SV *data, *callback;
63		99	SV *fh, *fh2;
64	/* should receive a cleanup, with unions */	100	void *dataptr, *data2ptr;
65	int fd, fd2;	101	Stat_t *statdata;
66	off_t offset;	102	off_t offset;
67	size_t length;	103	size_t length;
68	ssize_t result;	104	ssize_t result;
		105
		106	STRLEN dataoffset;
		107	int type;
		108	int fd, fd2;
		109	int errorno;
69	mode_t mode; /* open */	110	mode_t mode; /* open */
70	int errorno;
71	SV *data, *callback;
72	SV *fh, *fh2;
73	void *dataptr, *data2ptr;
74	STRLEN dataoffset;
75		111
76	Stat_t *statdata;	112	unsigned char flags;
		113	unsigned char pri;
		114
		115	SV *self; /* the perl counterpart of this request, if any */
		116	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
77	} aio_cb;	117	} aio_cb;
78		118
		119	enum {
		120	FLAG_CANCELLED = 0x01,
		121	};
		122
79	typedef aio_cb *aio_req;	123	typedef aio_cb *aio_req;
		124	typedef aio_cb *aio_req_ornot;
80		125
		126	enum {
		127	PRI_MIN = -4,
		128	PRI_MAX = 4,
		129
		130	DEFAULT_PRI = 0,
		131	PRI_BIAS = -PRI_MIN,
		132	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
		133	};
		134
		135	static int next_pri = DEFAULT_PRI + PRI_BIAS;
		136
81	static int started, wanted;	137	static unsigned int started, wanted;
82	static volatile int nreqs;	138	static volatile unsigned int nreqs;
83	static int max_outstanding = 1<<30;	139	static volatile unsigned int max_outstanding = 0xffffffff;
84	static int respipe [2];	140	static int respipe [2];
85		141
		142	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
		143	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
		144	#else
		145	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
		146	#endif
		147
		148	#define LOCK(mutex) pthread_mutex_lock (&(mutex))
		149	#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
		150
		151	/* worker threads management */
		152	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
		153
		154	typedef struct worker {
		155	/* locked by wrklock */
		156	struct worker *prev, *next;
		157
		158	pthread_t tid;
		159
		160	/* locked by reslock, reqlock or wrklock */
		161	aio_req req; /* currently processed request */
		162	void *dbuf;
		163	DIR *dirp;
		164	} worker;
		165
		166	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
		167
		168	static void worker_clear (worker *wrk)
		169	{
		170	if (wrk->dirp)
		171	{
		172	closedir (wrk->dirp);
		173	wrk->dirp = 0;
		174	}
		175
		176	if (wrk->dbuf)
		177	{
		178	free (wrk->dbuf);
		179	wrk->dbuf = 0;
		180	}
		181	}
		182
		183	static void worker_free (worker *wrk)
		184	{
		185	wrk->next->prev = wrk->prev;
		186	wrk->prev->next = wrk->next;
		187
		188	free (wrk);
		189	}
		190
86	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	191	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
87	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;	192	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
88	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	193	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
89		194
90	static volatile aio_req reqs, reqe; /* queue start, queue end */	195	/*
91	static volatile aio_req ress, rese; /* queue start, queue end */	196	* a somewhat faster data structure might be nice, but
		197	* with 8 priorities this actually needs <20 insns
		198	* per shift, the most expensive operation.
		199	*/
		200	typedef struct {
		201	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
		202	int size;
		203	} reqq;
92		204
		205	static reqq req_queue;
		206	static reqq res_queue;
		207
		208	int reqq_push (reqq *q, aio_req req)
		209	{
		210	int pri = req->pri;
		211	req->next = 0;
		212
		213	if (q->qe[pri])
		214	{
		215	q->qe[pri]->next = req;
		216	q->qe[pri] = req;
		217	}
		218	else
		219	q->qe[pri] = q->qs[pri] = req;
		220
		221	return q->size++;
		222	}
		223
		224	aio_req reqq_shift (reqq *q)
		225	{
		226	int pri;
		227
		228	if (!q->size)
		229	return 0;
		230
		231	--q->size;
		232
		233	for (pri = NUM_PRI; pri--; )
		234	{
		235	aio_req req = q->qs[pri];
		236
		237	if (req)
		238	{
		239	if (!(q->qs[pri] = req->next))
		240	q->qe[pri] = 0;
		241
		242	return req;
		243	}
		244	}
		245
		246	abort ();
		247	}
		248
		249	static int poll_cb (int max);
		250	static void req_invoke (aio_req req);
93	static void free_req (aio_req req)	251	static void req_free (aio_req req);
94	{	252	static void req_cancel (aio_req req);
95	if (req->data)
96	SvREFCNT_dec (req->data);
97		253
		254	/* must be called at most once */
		255	static SV *req_sv (aio_req req, const char *klass)
		256	{
98	if (req->fh)	257	if (!req->self)
99	SvREFCNT_dec (req->fh);	258	{
		259	req->self = (SV *)newHV ();
		260	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
		261	}
100		262
101	if (req->fh2)	263	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));
		264	}
		265
		266	static aio_req SvAIO_REQ (SV *sv)
		267	{
		268	MAGIC *mg;
		269
		270	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))
		271	croak ("object of class " AIO_REQ_KLASS " expected");
		272
		273	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
		274
		275	return mg ? (aio_req)mg->mg_ptr : 0;
		276	}
		277
		278	static void aio_grp_feed (aio_req grp)
		279	{
		280	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))
		281	{
		282	int old_len = grp->length;
		283
		284	if (grp->fh2 && SvOK (grp->fh2))
		285	{
		286	dSP;
		287
		288	ENTER;
		289	SAVETMPS;
		290	PUSHMARK (SP);
		291	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
		292	PUTBACK;
		293	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);
		294	SPAGAIN;
		295	FREETMPS;
		296	LEAVE;
		297	}
		298
		299	/* stop if no progress has been made */
		300	if (old_len == grp->length)
		301	{
102	SvREFCNT_dec (req->fh2);	302	SvREFCNT_dec (grp->fh2);
103		303	grp->fh2 = 0;
104	if (req->statdata)	304	break;
105	Safefree (req->statdata);	305	}
106
107	if (req->callback)
108	SvREFCNT_dec (req->callback);
109
110	if (req->type == REQ_READDIR && req->result >= 0)
111	free (req->data2ptr);
112
113	Safefree (req);
114	}
115
116	static void
117	poll_wait ()
118	{
119	if (nreqs && !ress)
120	{	306	}
		307	}
		308
		309	static void aio_grp_dec (aio_req grp)
		310	{
		311	--grp->length;
		312
		313	/* call feeder, if applicable */
		314	aio_grp_feed (grp);
		315
		316	/* finish, if done */
		317	if (!grp->length && grp->fd)
		318	{
		319	req_invoke (grp);
		320	req_free (grp);
		321	}
		322	}
		323
		324	static void poll_wait ()
		325	{
121	fd_set rfd;	326	fd_set rfd;
		327
		328	while (nreqs)
		329	{
		330	int size;
		331	#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
		332	LOCK (reslock);
		333	#endif
		334	size = res_queue.size;
		335	#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
		336	UNLOCK (reslock);
		337	#endif
		338
		339	if (size)
		340	return;
		341
122	FD_ZERO(&rfd);	342	FD_ZERO(&rfd);
123	FD_SET(respipe [0], &rfd);	343	FD_SET(respipe [0], &rfd);
124		344
125	select (respipe [0] + 1, &rfd, 0, 0, 0);	345	select (respipe [0] + 1, &rfd, 0, 0, 0);
126	}	346	}
127	}	347	}
128		348
129	static int	349	static void req_invoke (aio_req req)
130	poll_cb ()	350	{
		351	dSP;
		352
		353	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
		354	{
		355	errno = req->errorno;
		356
		357	ENTER;
		358	SAVETMPS;
		359	PUSHMARK (SP);
		360	EXTEND (SP, 1);
		361
		362	switch (req->type)
		363	{
		364	case REQ_READDIR:
		365	{
		366	SV *rv = &PL_sv_undef;
		367
		368	if (req->result >= 0)
		369	{
		370	int i;
		371	char *buf = req->data2ptr;
		372	AV *av = newAV ();
		373
		374	av_extend (av, req->result - 1);
		375
		376	for (i = 0; i < req->result; ++i)
		377	{
		378	SV *sv = newSVpv (buf, 0);
		379
		380	av_store (av, i, sv);
		381	buf += SvCUR (sv) + 1;
		382	}
		383
		384	rv = sv_2mortal (newRV_noinc ((SV *)av));
		385	}
		386
		387	PUSHs (rv);
		388	}
		389	break;
		390
		391	case REQ_OPEN:
		392	{
		393	/* convert fd to fh */
		394	SV *fh;
		395
		396	PUSHs (sv_2mortal (newSViv (req->result)));
		397	PUTBACK;
		398	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
		399	SPAGAIN;
		400
		401	fh = SvREFCNT_inc (POPs);
		402
		403	PUSHMARK (SP);
		404	XPUSHs (sv_2mortal (fh));
		405	}
		406	break;
		407
		408	case REQ_GROUP:
		409	req->fd = 2; /* mark group as finished */
		410
		411	if (req->data)
		412	{
		413	int i;
		414	AV *av = (AV *)req->data;
		415
		416	EXTEND (SP, AvFILL (av) + 1);
		417	for (i = 0; i <= AvFILL (av); ++i)
		418	PUSHs (*av_fetch (av, i, 0));
		419	}
		420	break;
		421
		422	case REQ_NOP:
		423	case REQ_BUSY:
		424	break;
		425
		426	default:
		427	PUSHs (sv_2mortal (newSViv (req->result)));
		428	break;
		429	}
		430
		431
		432	PUTBACK;
		433	call_sv (req->callback, G_VOID | G_EVAL);
		434	SPAGAIN;
		435
		436	FREETMPS;
		437	LEAVE;
		438	}
		439
		440	if (req->grp)
		441	{
		442	aio_req grp = req->grp;
		443
		444	/* unlink request */
		445	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
		446	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
		447
		448	if (grp->grp_first == req)
		449	grp->grp_first = req->grp_next;
		450
		451	aio_grp_dec (grp);
		452	}
		453
		454	if (SvTRUE (ERRSV))
		455	{
		456	req_free (req);
		457	croak (0);
		458	}
		459	}
		460
		461	static void req_free (aio_req req)
		462	{
		463	if (req->self)
		464	{
		465	sv_unmagic (req->self, PERL_MAGIC_ext);
		466	SvREFCNT_dec (req->self);
		467	}
		468
		469	SvREFCNT_dec (req->data);
		470	SvREFCNT_dec (req->fh);
		471	SvREFCNT_dec (req->fh2);
		472	SvREFCNT_dec (req->callback);
		473	Safefree (req->statdata);
		474
		475	if (req->type == REQ_READDIR)
		476	free (req->data2ptr);
		477
		478	Safefree (req);
		479	}
		480
		481	static void req_cancel_subs (aio_req grp)
		482	{
		483	aio_req sub;
		484
		485	if (grp->type != REQ_GROUP)
		486	return;
		487
		488	SvREFCNT_dec (grp->fh2);
		489	grp->fh2 = 0;
		490
		491	for (sub = grp->grp_first; sub; sub = sub->grp_next)
		492	req_cancel (sub);
		493	}
		494
		495	static void req_cancel (aio_req req)
		496	{
		497	req->flags |= FLAG_CANCELLED;
		498
		499	req_cancel_subs (req);
		500	}
		501
		502	static int poll_cb (int max)
131	{	503	{
132	dSP;	504	dSP;
133	int count = 0;	505	int count = 0;
134	int do_croak = 0;	506	int do_croak = 0;
135	aio_req req;	507	aio_req req;
136		508
137	for (;;)	509	for (;;)
138	{	510	{
139	pthread_mutex_lock (&reslock);	511	while (max <= 0 || count < max)
140	req = ress;
141
142	if (req)
143	{	512	{
144	ress = req->next;	513	LOCK (reslock);
		514	req = reqq_shift (&res_queue);
145		515
146	if (!ress)	516	if (req)
147	{	517	{
		518	if (!res_queue.size)
		519	{
148	/* read any signals sent by the worker threads */	520	/* read any signals sent by the worker threads */
149	char buf [32];	521	char buf [32];
150	while (read (respipe [0], buf, 32) == 32)	522	while (read (respipe [0], buf, 32) == 32)
		523	;
151	;	524	}
152
153	rese = 0;
154	}	525	}
155	}
156		526
157	pthread_mutex_unlock (&reslock);	527	UNLOCK (reslock);
158		528
159	if (!req)	529	if (!req)
160	break;	530	break;
161		531
162	nreqs--;	532	--nreqs;
163		533
164	if (req->type == REQ_QUIT)	534	if (req->type == REQ_QUIT)
165	started--;	535	--started;
166	else	536	else if (req->type == REQ_GROUP && req->length)
167	{
168	int errorno = errno;
169	errno = req->errorno;
170
171	if (req->type == REQ_READ)
172	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
173
174	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
175	SvREADONLY_off (req->data);
176
177	if (req->statdata)
178	{	537	{
179	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	538	req->fd = 1; /* mark request as delayed */
180	PL_laststatval = req->result;	539	continue;
181	PL_statcache = *(req->statdata);
182	}
183
184	ENTER;
185	PUSHMARK (SP);
186
187	if (req->type == REQ_READDIR)
188	{
189	SV *rv = &PL_sv_undef;
190
191	if (req->result >= 0)
192	{
193	char *buf = req->data2ptr;
194	AV *av = newAV ();
195
196	while (req->result)
197	{
198	SV *sv = newSVpv (buf, 0);
199
200	av_push (av, sv);
201	buf += SvCUR (sv) + 1;
202	req->result--;
203	}
204
205	rv = sv_2mortal (newRV_noinc ((SV *)av));
206	}
207
208	XPUSHs (rv);
209	}	540	}
210	else	541	else
211	{	542	{
212	XPUSHs (sv_2mortal (newSViv (req->result)));
213
214	if (req->type == REQ_OPEN)	543	if (req->type == REQ_READ)
		544	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
		545
		546	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
		547	SvREADONLY_off (req->data);
		548
		549	if (req->statdata)
215	{	550	{
216	/* convert fd to fh */	551	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
217	SV *fh;	552	PL_laststatval = req->result;
218		553	PL_statcache = *(req->statdata);
219	PUTBACK;
220	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
221	SPAGAIN;
222
223	fh = SvREFCNT_inc (POPs);
224
225	PUSHMARK (SP);
226	XPUSHs (sv_2mortal (fh));
227	}	554	}
		555
		556	req_invoke (req);
		557
		558	count++;
228	}	559	}
229		560
230	if (SvOK (req->callback))	561	req_free (req);
231	{
232	PUTBACK;
233	call_sv (req->callback, G_VOID | G_EVAL);
234	SPAGAIN;
235
236	if (SvTRUE (ERRSV))
237	{
238	free_req (req);
239	croak (0);
240	}
241	}
242
243	LEAVE;
244
245	errno = errorno;
246	count++;
247	}	562	}
248		563
249	free_req (req);	564	if (nreqs <= max_outstanding)
		565	break;
		566
		567	poll_wait ();
		568
		569	max = 0;
250	}	570	}
251		571
252	return count;	572	return count;
253	}	573	}
254		574
255	static void *aio_proc(void *arg);	575	static void *aio_proc(void *arg);
256		576
257	static void
258	start_thread (void)	577	static void start_thread (void)
259	{	578	{
260	sigset_t fullsigset, oldsigset;	579	sigset_t fullsigset, oldsigset;
261	pthread_t tid;
262	pthread_attr_t attr;	580	pthread_attr_t attr;
		581
		582	worker *wrk = calloc (1, sizeof (worker));
		583
		584	if (!wrk)
		585	croak ("unable to allocate worker thread data");
263		586
264	pthread_attr_init (&attr);	587	pthread_attr_init (&attr);
265	pthread_attr_setstacksize (&attr, STACKSIZE);	588	pthread_attr_setstacksize (&attr, STACKSIZE);
266	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);	589	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
267		590
268	sigfillset (&fullsigset);	591	sigfillset (&fullsigset);
		592
		593	LOCK (wrklock);
269	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);	594	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
270		595
271	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)	596	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
		597	{
		598	wrk->prev = &wrk_first;
		599	wrk->next = wrk_first.next;
		600	wrk_first.next->prev = wrk;
		601	wrk_first.next = wrk;
272	started++;	602	++started;
		603	}
		604	else
		605	free (wrk);
273		606
274	sigprocmask (SIG_SETMASK, &oldsigset, 0);	607	sigprocmask (SIG_SETMASK, &oldsigset, 0);
		608	UNLOCK (wrklock);
275	}	609	}
276		610
277	static void	611	static void req_send (aio_req req)
278	send_req (aio_req req)
279	{	612	{
280	while (started < wanted && nreqs >= started)	613	while (started < wanted && nreqs >= started)
281	start_thread ();	614	start_thread ();
282		615
283	nreqs++;	616	++nreqs;
284		617
285	pthread_mutex_lock (&reqlock);	618	LOCK (reqlock);
286		619	reqq_push (&req_queue, req);
287	req->next = 0;
288
289	if (reqe)
290	{
291	reqe->next = req;
292	reqe = req;
293	}
294	else
295	reqe = reqs = req;
296
297	pthread_cond_signal (&reqwait);	620	pthread_cond_signal (&reqwait);
298	pthread_mutex_unlock (&reqlock);	621	UNLOCK (reqlock);
299
300	if (nreqs > max_outstanding)
301	for (;;)
302	{
303	poll_cb ();
304
305	if (nreqs <= max_outstanding)
306	break;
307
308	poll_wait ();
309	}
310	}	622	}
311		623
312	static void	624	static void end_thread (void)
313	end_thread (void)
314	{	625	{
315	aio_req req;	626	aio_req req;
		627
316	Newz (0, req, 1, aio_cb);	628	Newz (0, req, 1, aio_cb);
		629
317	req->type = REQ_QUIT;	630	req->type = REQ_QUIT;
		631	req->pri = PRI_MAX + PRI_BIAS;
318		632
319	send_req (req);	633	req_send (req);
320	}	634	}
321		635
322	static void min_parallel (int nthreads)	636	static void min_parallel (int nthreads)
323	{	637	{
324	if (wanted < nthreads)	638	if (wanted < nthreads)
…		…
339	}	653	}
340		654
341	while (started > wanted)	655	while (started > wanted)
342	{	656	{
343	poll_wait ();	657	poll_wait ();
344	poll_cb ();	658	poll_cb (0);
345	}	659	}
346	}	660	}
347		661
348	static void create_pipe ()	662	static void create_pipe ()
349	{	663	{
…		…
369	* normal read/write by using a mutex. slows down execution a lot,	683	* normal read/write by using a mutex. slows down execution a lot,
370	* but that's your problem, not mine.	684	* but that's your problem, not mine.
371	*/	685	*/
372	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;	686	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
373		687
374	static ssize_t	688	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
375	pread (int fd, void *buf, size_t count, off_t offset)
376	{	689	{
377	ssize_t res;	690	ssize_t res;
378	off_t ooffset;	691	off_t ooffset;
379		692
380	pthread_mutex_lock (&preadwritelock);	693	LOCK (preadwritelock);
381	ooffset = lseek (fd, 0, SEEK_CUR);	694	ooffset = lseek (fd, 0, SEEK_CUR);
382	lseek (fd, offset, SEEK_SET);	695	lseek (fd, offset, SEEK_SET);
383	res = read (fd, buf, count);	696	res = read (fd, buf, count);
384	lseek (fd, ooffset, SEEK_SET);	697	lseek (fd, ooffset, SEEK_SET);
385	pthread_mutex_unlock (&preadwritelock);	698	UNLOCK (preadwritelock);
386		699
387	return res;	700	return res;
388	}	701	}
389		702
390	static ssize_t
391	pwrite (int fd, void *buf, size_t count, off_t offset)	703	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
392	{	704	{
393	ssize_t res;	705	ssize_t res;
394	off_t ooffset;	706	off_t ooffset;
395		707
396	pthread_mutex_lock (&preadwritelock);	708	LOCK (preadwritelock);
397	ooffset = lseek (fd, 0, SEEK_CUR);	709	ooffset = lseek (fd, 0, SEEK_CUR);
398	lseek (fd, offset, SEEK_SET);	710	lseek (fd, offset, SEEK_SET);
399	res = write (fd, buf, count);	711	res = write (fd, buf, count);
400	lseek (fd, offset, SEEK_SET);	712	lseek (fd, offset, SEEK_SET);
401	pthread_mutex_unlock (&preadwritelock);	713	UNLOCK (preadwritelock);
402		714
403	return res;	715	return res;
404	}	716	}
405	#endif	717	#endif
406		718
407	#if !HAVE_FDATASYNC	719	#if !HAVE_FDATASYNC
408	# define fdatasync fsync	720	# define fdatasync fsync
409	#endif	721	#endif
410		722
411	#if !HAVE_READAHEAD	723	#if !HAVE_READAHEAD
412	# define readahead aio_readahead	724	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
413		725
414	static ssize_t	726	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
415	readahead (int fd, off_t offset, size_t count)
416	{	727	{
417	char readahead_buf[4096];	728	dBUF;
418		729
419	while (count > 0)	730	while (count > 0)
420	{	731	{
421	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);	732	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
422		733
423	pread (fd, readahead_buf, len, offset);	734	pread (fd, aio_buf, len, offset);
424	offset += len;	735	offset += len;
425	count -= len;	736	count -= len;
426	}	737	}
427		738
428	errno = 0;	739	errno = 0;
429	}	740	}
		741
430	#endif	742	#endif
431		743
432	#if !HAVE_READDIR_R	744	#if !HAVE_READDIR_R
433	# define readdir_r aio_readdir_r	745	# define readdir_r aio_readdir_r
434		746
435	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;	747	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
436		748
437	static int
438	readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)	749	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
439	{	750	{
440	struct dirent *e;	751	struct dirent *e;
441	int errorno;	752	int errorno;
442		753
443	pthread_mutex_lock (&readdirlock);	754	LOCK (readdirlock);
444		755
445	e = readdir (dirp);	756	e = readdir (dirp);
446	errorno = errno;	757	errorno = errno;
447		758
448	if (e)	759	if (e)
…		…
451	strcpy (ent->d_name, e->d_name);	762	strcpy (ent->d_name, e->d_name);
452	}	763	}
453	else	764	else
454	*res = 0;	765	*res = 0;
455		766
456	pthread_mutex_unlock (&readdirlock);	767	UNLOCK (readdirlock);
457		768
458	errno = errorno;	769	errno = errorno;
459	return e ? 0 : -1;	770	return e ? 0 : -1;
460	}	771	}
461	#endif	772	#endif
462		773
463	/* sendfile always needs emulation */	774	/* sendfile always needs emulation */
464	static ssize_t
465	sendfile_ (int ofd, int ifd, off_t offset, size_t count)	775	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
466	{	776	{
467	ssize_t res;	777	ssize_t res;
468		778
469	if (!count)	779	if (!count)
470	return 0;	780	return 0;
…		…
481	{	791	{
482	off_t sbytes;	792	off_t sbytes;
483	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);	793	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
484		794
485	if (res < 0 && sbytes)	795	if (res < 0 && sbytes)
486	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */	796	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
487	res = sbytes;	797	res = sbytes;
488	}	798	}
489		799
490	# elif __hpux	800	# elif __hpux
491	res = sendfile (ofd, ifd, offset, count, 0, 0);	801	res = sendfile (ofd, ifd, offset, count, 0, 0);
…		…
519	#endif	829	#endif
520	)	830	)
521	)	831	)
522	{	832	{
523	/* emulate sendfile. this is a major pain in the ass */	833	/* emulate sendfile. this is a major pain in the ass */
524	char buf[4096];	834	dBUF;
		835
525	res = 0;	836	res = 0;
526		837
527	while (count)	838	while (count)
528	{	839	{
529	ssize_t cnt;	840	ssize_t cnt;
530		841
531	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);	842	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
532		843
533	if (cnt <= 0)	844	if (cnt <= 0)
534	{	845	{
535	if (cnt && !res) res = -1;	846	if (cnt && !res) res = -1;
536	break;	847	break;
537	}	848	}
538		849
539	cnt = write (ofd, buf, cnt);	850	cnt = write (ofd, aio_buf, cnt);
540		851
541	if (cnt <= 0)	852	if (cnt <= 0)
542	{	853	{
543	if (cnt && !res) res = -1;	854	if (cnt && !res) res = -1;
544	break;	855	break;
…		…
552		863
553	return res;	864	return res;
554	}	865	}
555		866
556	/* read a full directory */	867	/* read a full directory */
557	static int	868	static void scandir_ (aio_req req, worker *self)
558	scandir_ (const char *path, void **namesp)
559	{	869	{
560	DIR *dirp = opendir (path);	870	DIR *dirp;
561	union	871	union
562	{	872	{
563	struct dirent d;	873	struct dirent d;
564	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];	874	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
565	} u;	875	} *u;
566	struct dirent *entp;	876	struct dirent *entp;
567	char *name, *names;	877	char *name, *names;
568	int memlen = 4096;	878	int memlen = 4096;
569	int memofs = 0;	879	int memofs = 0;
570	int res = 0;	880	int res = 0;
571	int errorno;	881	int errorno;
572		882
573	if (!dirp)	883	LOCK (wrklock);
574	return -1;	884	self->dirp = dirp = opendir (req->dataptr);
575		885	self->dbuf = u = malloc (sizeof (*u));
576	names = malloc (memlen);	886	req->data2ptr = names = malloc (memlen);
		887	UNLOCK (wrklock);
577		888
		889	if (dirp && u && names)
578	for (;;)	890	for (;;)
579	{	891	{
		892	errno = 0;
580	errno = 0, readdir_r (dirp, &u.d, &entp);	893	readdir_r (dirp, &u->d, &entp);
581		894
582	if (!entp)	895	if (!entp)
583	break;	896	break;
584		897
585	name = entp->d_name;	898	name = entp->d_name;
586		899
587	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))	900	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
588	{	901	{
589	int len = strlen (name) + 1;	902	int len = strlen (name) + 1;
590		903
591	res++;	904	res++;
592		905
593	while (memofs + len > memlen)	906	while (memofs + len > memlen)
594	{	907	{
595	memlen *= 2;	908	memlen *= 2;
		909	LOCK (wrklock);
596	names = realloc (names, memlen);	910	req->data2ptr = names = realloc (names, memlen);
		911	UNLOCK (wrklock);
		912
597	if (!names)	913	if (!names)
598	break;	914	break;
599	}	915	}
600		916
601	memcpy (names + memofs, name, len);	917	memcpy (names + memofs, name, len);
602	memofs += len;	918	memofs += len;
603	}	919	}
604	}	920	}
605		921
606	errorno = errno;
607	closedir (dirp);
608
609	if (errorno)	922	if (errno)
610	{
611	free (names);
612	errno = errorno;
613	res = -1;	923	res = -1;
614	}	924
615		925	req->result = res;
616	*namesp = (void *)names;
617	return res;
618	}	926	}
619		927
620	/*****************************************************************************/	928	/*****************************************************************************/
621		929
622	static void *
623	aio_proc (void *thr_arg)	930	static void *aio_proc (void *thr_arg)
624	{	931	{
625	aio_req req;	932	aio_req req;
626	int type;	933	int type;
		934	worker *self = (worker *)thr_arg;
627		935
628	do	936	do
629	{	937	{
630	pthread_mutex_lock (&reqlock);	938	LOCK (reqlock);
631		939
632	for (;;)	940	for (;;)
633	{	941	{
634	req = reqs;	942	self->req = req = reqq_shift (&req_queue);
635
636	if (reqs)
637	{
638	reqs = reqs->next;
639	if (!reqs) reqe = 0;
640	}
641		943
642	if (req)	944	if (req)
643	break;	945	break;
644		946
645	pthread_cond_wait (&reqwait, &reqlock);	947	pthread_cond_wait (&reqwait, &reqlock);
646	}	948	}
647		949
648	pthread_mutex_unlock (&reqlock);	950	UNLOCK (reqlock);
649		951
650	errno = 0; /* strictly unnecessary */	952	errno = 0; /* strictly unnecessary */
		953	type = req->type; /* remember type for QUIT check */
651		954
652	type = req->type;	955	if (!(req->flags & FLAG_CANCELLED))
653
654	switch (type)	956	switch (type)
655	{	957	{
656	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;	958	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
657	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;	959	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
658		960
659	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	961	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
660	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;	962	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length, self); break;
661		963
662	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	964	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
663	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	965	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
664	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	966	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
665		967
666	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;	968	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
667	case REQ_CLOSE: req->result = close (req->fd); break;	969	case REQ_CLOSE: req->result = close (req->fd); break;
668	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	970	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
669	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;	971	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
670	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;	972	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
671	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;	973	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
672	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;	974	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
673		975
674	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	976	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
675	case REQ_FSYNC: req->result = fsync (req->fd); break;	977	case REQ_FSYNC: req->result = fsync (req->fd); break;
676	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;	978	case REQ_READDIR: scandir_ (req, self); break;
677		979
		980	case REQ_BUSY:
		981	{
		982	struct timeval tv;
		983
		984	tv.tv_sec = req->fd;
		985	tv.tv_usec = req->fd2;
		986
		987	req->result = select (0, 0, 0, 0, &tv);
		988	}
		989
		990	case REQ_GROUP:
		991	case REQ_NOP:
678	case REQ_QUIT:	992	case REQ_QUIT:
679	break;	993	break;
680		994
681	default:	995	default:
682	req->result = ENOSYS;	996	req->result = ENOSYS;
683	break;	997	break;
684	}	998	}
685		999
686	req->errorno = errno;	1000	req->errorno = errno;
687		1001
688	pthread_mutex_lock (&reslock);	1002	LOCK (reslock);
689		1003
690	req->next = 0;	1004	if (!reqq_push (&res_queue, req))
691
692	if (rese)
693	{
694	rese->next = req;
695	rese = req;
696	}
697	else
698	{
699	rese = ress = req;
700
701	/* write a dummy byte to the pipe so fh becomes ready */	1005	/* write a dummy byte to the pipe so fh becomes ready */
702	write (respipe [1], &respipe, 1);	1006	write (respipe [1], &respipe, 1);
703	}
704		1007
705	pthread_mutex_unlock (&reslock);	1008	self->req = 0;
		1009	worker_clear (self);
		1010
		1011	UNLOCK (reslock);
706	}	1012	}
707	while (type != REQ_QUIT);	1013	while (type != REQ_QUIT);
708		1014
		1015	LOCK (wrklock);
		1016	worker_free (self);
		1017	UNLOCK (wrklock);
		1018
709	return 0;	1019	return 0;
710	}	1020	}
711		1021
712	/*****************************************************************************/	1022	/*****************************************************************************/
713		1023
714	static void atfork_prepare (void)	1024	static void atfork_prepare (void)
715	{	1025	{
716	pthread_mutex_lock (&reqlock);	1026	LOCK (wrklock);
717	pthread_mutex_lock (&reslock);	1027	LOCK (reqlock);
		1028	LOCK (reslock);
718	#if !HAVE_PREADWRITE	1029	#if !HAVE_PREADWRITE
719	pthread_mutex_lock (&preadwritelock);	1030	LOCK (preadwritelock);
720	#endif	1031	#endif
721	#if !HAVE_READDIR_R	1032	#if !HAVE_READDIR_R
722	pthread_mutex_lock (&readdirlock);	1033	LOCK (readdirlock);
723	#endif	1034	#endif
724	}	1035	}
725		1036
726	static void atfork_parent (void)	1037	static void atfork_parent (void)
727	{	1038	{
728	#if !HAVE_READDIR_R	1039	#if !HAVE_READDIR_R
729	pthread_mutex_unlock (&readdirlock);	1040	UNLOCK (readdirlock);
730	#endif	1041	#endif
731	#if !HAVE_PREADWRITE	1042	#if !HAVE_PREADWRITE
732	pthread_mutex_unlock (&preadwritelock);	1043	UNLOCK (preadwritelock);
733	#endif	1044	#endif
734	pthread_mutex_unlock (&reslock);	1045	UNLOCK (reslock);
735	pthread_mutex_unlock (&reqlock);	1046	UNLOCK (reqlock);
		1047	UNLOCK (wrklock);
736	}	1048	}
737		1049
738	static void atfork_child (void)	1050	static void atfork_child (void)
739	{	1051	{
740	aio_req prv;	1052	aio_req prv;
741		1053
		1054	while (prv = reqq_shift (&req_queue))
		1055	req_free (prv);
		1056
		1057	while (prv = reqq_shift (&res_queue))
		1058	req_free (prv);
		1059
		1060	while (wrk_first.next != &wrk_first)
		1061	{
		1062	worker *wrk = wrk_first.next;
		1063
		1064	if (wrk->req)
		1065	req_free (wrk->req);
		1066
		1067	worker_clear (wrk);
		1068	worker_free (wrk);
		1069	}
		1070
742	started = 0;	1071	started = 0;
743		1072	nreqs = 0;
744	while (reqs)
745	{
746	prv = reqs;
747	reqs = prv->next;
748	free_req (prv);
749	}
750
751	reqs = reqe = 0;
752
753	while (ress)
754	{
755	prv = ress;
756	ress = prv->next;
757	free_req (prv);
758	}
759
760	ress = rese = 0;
761		1073
762	close (respipe [0]);	1074	close (respipe [0]);
763	close (respipe [1]);	1075	close (respipe [1]);
764	create_pipe ();	1076	create_pipe ();
765		1077
766	atfork_parent ();	1078	atfork_parent ();
767	}	1079	}
768		1080
769	#define dREQ \	1081	#define dREQ \
770	aio_req req; \	1082	aio_req req; \
		1083	int req_pri = next_pri; \
		1084	next_pri = DEFAULT_PRI + PRI_BIAS; \
771	\	1085	\
772	if (SvOK (callback) && !SvROK (callback)) \	1086	if (SvOK (callback) && !SvROK (callback)) \
773	croak ("clalback must be undef or of reference type"); \	1087	croak ("callback must be undef or of reference type"); \
774	\	1088	\
775	Newz (0, req, 1, aio_cb); \	1089	Newz (0, req, 1, aio_cb); \
776	if (!req) \	1090	if (!req) \
777	croak ("out of memory during aio_req allocation"); \	1091	croak ("out of memory during aio_req allocation"); \
778	\	1092	\
779	req->callback = newSVsv (callback);	1093	req->callback = newSVsv (callback); \
		1094	req->pri = req_pri
		1095
		1096	#define REQ_SEND \
		1097	req_send (req); \
		1098	\
		1099	if (GIMME_V != G_VOID) \
		1100	XPUSHs (req_sv (req, AIO_REQ_KLASS));
780		1101
781	MODULE = IO::AIO PACKAGE = IO::AIO	1102	MODULE = IO::AIO PACKAGE = IO::AIO
782		1103
783	PROTOTYPES: ENABLE	1104	PROTOTYPES: ENABLE
784		1105
785	BOOT:	1106	BOOT:
786	{	1107	{
		1108	HV *stash = gv_stashpv ("IO::AIO", 1);
		1109	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
		1110	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
		1111	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
		1112
787	create_pipe ();	1113	create_pipe ();
788	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	1114	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
789	}	1115	}
790		1116
791	void	1117	void
792	min_parallel (nthreads)	1118	min_parallel (int nthreads)
793	int nthreads
794	PROTOTYPE: $	1119	PROTOTYPE: $
795		1120
796	void	1121	void
797	max_parallel (nthreads)	1122	max_parallel (int nthreads)
798	int nthreads
799	PROTOTYPE: $	1123	PROTOTYPE: $
800		1124
801	int	1125	int
802	max_outstanding (nreqs)	1126	max_outstanding (int maxreqs)
803	int nreqs	1127	PROTOTYPE: $
804	PROTOTYPE: $
805	CODE:	1128	CODE:
806	RETVAL = max_outstanding;	1129	RETVAL = max_outstanding;
807	max_outstanding = nreqs;	1130	max_outstanding = maxreqs;
		1131	OUTPUT:
		1132	RETVAL
808		1133
809	void	1134	void
810	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	1135	aio_open (pathname,flags,mode,callback=&PL_sv_undef)
811	SV * pathname	1136	SV * pathname
812	int flags	1137	int flags
813	int mode	1138	int mode
814	SV * callback	1139	SV * callback
815	PROTOTYPE: $$$;$	1140	PROTOTYPE: $$$;$
816	CODE:	1141	PPCODE:
817	{	1142	{
818	dREQ;	1143	dREQ;
819		1144
820	req->type = REQ_OPEN;	1145	req->type = REQ_OPEN;
821	req->data = newSVsv (pathname);	1146	req->data = newSVsv (pathname);
822	req->dataptr = SvPVbyte_nolen (req->data);	1147	req->dataptr = SvPVbyte_nolen (req->data);
823	req->fd = flags;	1148	req->fd = flags;
824	req->mode = mode;	1149	req->mode = mode;
825		1150
826	send_req (req);	1151	REQ_SEND;
827	}	1152	}
828		1153
829	void	1154	void
830	aio_close (fh,callback=&PL_sv_undef)	1155	aio_close (fh,callback=&PL_sv_undef)
831	SV * fh	1156	SV * fh
…		…
833	PROTOTYPE: $;$	1158	PROTOTYPE: $;$
834	ALIAS:	1159	ALIAS:
835	aio_close = REQ_CLOSE	1160	aio_close = REQ_CLOSE
836	aio_fsync = REQ_FSYNC	1161	aio_fsync = REQ_FSYNC
837	aio_fdatasync = REQ_FDATASYNC	1162	aio_fdatasync = REQ_FDATASYNC
838	CODE:	1163	PPCODE:
839	{	1164	{
840	dREQ;	1165	dREQ;
841		1166
842	req->type = ix;	1167	req->type = ix;
843	req->fh = newSVsv (fh);	1168	req->fh = newSVsv (fh);
844	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1169	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
845		1170
846	send_req (req);	1171	REQ_SEND (req);
847	}	1172	}
848		1173
849	void	1174	void
850	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1175	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
851	SV * fh	1176	SV * fh
…		…
856	SV * callback	1181	SV * callback
857	ALIAS:	1182	ALIAS:
858	aio_read = REQ_READ	1183	aio_read = REQ_READ
859	aio_write = REQ_WRITE	1184	aio_write = REQ_WRITE
860	PROTOTYPE: $$$$$;$	1185	PROTOTYPE: $$$$$;$
861	CODE:	1186	PPCODE:
862	{	1187	{
863	aio_req req;	1188	aio_req req;
864	STRLEN svlen;	1189	STRLEN svlen;
865	char *svptr = SvPVbyte (data, svlen);	1190	char *svptr = SvPVbyte (data, svlen);
866		1191
…		…
904	{	1229	{
905	SvREADONLY_on (data);	1230	SvREADONLY_on (data);
906	req->data2ptr = (void *)data;	1231	req->data2ptr = (void *)data;
907	}	1232	}
908		1233
909	send_req (req);	1234	REQ_SEND;
910	}	1235	}
911	}	1236	}
912		1237
913	void	1238	void
914	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1239	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)
…		…
916	SV * in_fh	1241	SV * in_fh
917	UV in_offset	1242	UV in_offset
918	UV length	1243	UV length
919	SV * callback	1244	SV * callback
920	PROTOTYPE: $$$$;$	1245	PROTOTYPE: $$$$;$
921	CODE:	1246	PPCODE:
922	{	1247	{
923	dREQ;	1248	dREQ;
924		1249
925	req->type = REQ_SENDFILE;	1250	req->type = REQ_SENDFILE;
926	req->fh = newSVsv (out_fh);	1251	req->fh = newSVsv (out_fh);
…		…
928	req->fh2 = newSVsv (in_fh);	1253	req->fh2 = newSVsv (in_fh);
929	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1254	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
930	req->offset = in_offset;	1255	req->offset = in_offset;
931	req->length = length;	1256	req->length = length;
932		1257
933	send_req (req);	1258	REQ_SEND;
934	}	1259	}
935		1260
936	void	1261	void
937	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1262	aio_readahead (fh,offset,length,callback=&PL_sv_undef)
938	SV * fh	1263	SV * fh
939	UV offset	1264	UV offset
940	IV length	1265	IV length
941	SV * callback	1266	SV * callback
942	PROTOTYPE: $$$;$	1267	PROTOTYPE: $$$;$
943	CODE:	1268	PPCODE:
944	{	1269	{
945	dREQ;	1270	dREQ;
946		1271
947	req->type = REQ_READAHEAD;	1272	req->type = REQ_READAHEAD;
948	req->fh = newSVsv (fh);	1273	req->fh = newSVsv (fh);
949	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1274	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
950	req->offset = offset;	1275	req->offset = offset;
951	req->length = length;	1276	req->length = length;
952		1277
953	send_req (req);	1278	REQ_SEND;
954	}	1279	}
955		1280
956	void	1281	void
957	aio_stat (fh_or_path,callback=&PL_sv_undef)	1282	aio_stat (fh_or_path,callback=&PL_sv_undef)
958	SV * fh_or_path	1283	SV * fh_or_path
959	SV * callback	1284	SV * callback
960	ALIAS:	1285	ALIAS:
961	aio_stat = REQ_STAT	1286	aio_stat = REQ_STAT
962	aio_lstat = REQ_LSTAT	1287	aio_lstat = REQ_LSTAT
963	CODE:	1288	PPCODE:
964	{	1289	{
965	dREQ;	1290	dREQ;
966		1291
967	New (0, req->statdata, 1, Stat_t);	1292	New (0, req->statdata, 1, Stat_t);
968	if (!req->statdata)	1293	if (!req->statdata)
969	{	1294	{
970	free_req (req);	1295	req_free (req);
971	croak ("out of memory during aio_req->statdata allocation");	1296	croak ("out of memory during aio_req->statdata allocation");
972	}	1297	}
973		1298
974	if (SvPOK (fh_or_path))	1299	if (SvPOK (fh_or_path))
975	{	1300	{
…		…
982	req->type = REQ_FSTAT;	1307	req->type = REQ_FSTAT;
983	req->fh = newSVsv (fh_or_path);	1308	req->fh = newSVsv (fh_or_path);
984	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1309	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
985	}	1310	}
986		1311
987	send_req (req);	1312	REQ_SEND;
988	}	1313	}
989		1314
990	void	1315	void
991	aio_unlink (pathname,callback=&PL_sv_undef)	1316	aio_unlink (pathname,callback=&PL_sv_undef)
992	SV * pathname	1317	SV * pathname
993	SV * callback	1318	SV * callback
994	ALIAS:	1319	ALIAS:
995	aio_unlink = REQ_UNLINK	1320	aio_unlink = REQ_UNLINK
996	aio_rmdir = REQ_RMDIR	1321	aio_rmdir = REQ_RMDIR
997	aio_readdir = REQ_READDIR	1322	aio_readdir = REQ_READDIR
998	CODE:	1323	PPCODE:
999	{	1324	{
1000	dREQ;	1325	dREQ;
1001		1326
1002	req->type = ix;	1327	req->type = ix;
1003	req->data = newSVsv (pathname);	1328	req->data = newSVsv (pathname);
1004	req->dataptr = SvPVbyte_nolen (req->data);	1329	req->dataptr = SvPVbyte_nolen (req->data);
1005		1330
1006	send_req (req);	1331	REQ_SEND;
1007	}	1332	}
1008		1333
1009	void	1334	void
1010	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1335	aio_link (oldpath,newpath,callback=&PL_sv_undef)
1011	SV * oldpath	1336	SV * oldpath
…		…
1013	SV * callback	1338	SV * callback
1014	ALIAS:	1339	ALIAS:
1015	aio_link = REQ_LINK	1340	aio_link = REQ_LINK
1016	aio_symlink = REQ_SYMLINK	1341	aio_symlink = REQ_SYMLINK
1017	aio_rename = REQ_RENAME	1342	aio_rename = REQ_RENAME
1018	CODE:	1343	PPCODE:
1019	{	1344	{
1020	dREQ;	1345	dREQ;
1021		1346
1022	req->type = ix;	1347	req->type = ix;
1023	req->fh = newSVsv (oldpath);	1348	req->fh = newSVsv (oldpath);
1024	req->data2ptr = SvPVbyte_nolen (req->fh);	1349	req->data2ptr = SvPVbyte_nolen (req->fh);
1025	req->data = newSVsv (newpath);	1350	req->data = newSVsv (newpath);
1026	req->dataptr = SvPVbyte_nolen (req->data);	1351	req->dataptr = SvPVbyte_nolen (req->data);
1027		1352
1028	send_req (req);	1353	REQ_SEND;
1029	}	1354	}
		1355
		1356	void
		1357	aio_busy (delay,callback=&PL_sv_undef)
		1358	double delay
		1359	SV * callback
		1360	PPCODE:
		1361	{
		1362	dREQ;
		1363
		1364	req->type = REQ_BUSY;
		1365	req->fd = delay < 0. ? 0 : delay;
		1366	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
		1367
		1368	REQ_SEND;
		1369	}
		1370
		1371	void
		1372	aio_group (callback=&PL_sv_undef)
		1373	SV * callback
		1374	PROTOTYPE: ;$
		1375	PPCODE:
		1376	{
		1377	dREQ;
		1378
		1379	req->type = REQ_GROUP;
		1380	req_send (req);
		1381
		1382	XPUSHs (req_sv (req, AIO_GRP_KLASS));
		1383	}
		1384
		1385	void
		1386	aio_nop (callback=&PL_sv_undef)
		1387	SV * callback
		1388	PPCODE:
		1389	{
		1390	dREQ;
		1391
		1392	req->type = REQ_NOP;
		1393
		1394	REQ_SEND;
		1395	}
		1396
		1397	void
		1398	aioreq_pri (int pri = DEFAULT_PRI)
		1399	CODE:
		1400	if (pri < PRI_MIN) pri = PRI_MIN;
		1401	if (pri > PRI_MAX) pri = PRI_MAX;
		1402	next_pri = pri + PRI_BIAS;
		1403
		1404	void
		1405	aioreq_nice (int nice = 0)
		1406	CODE:
		1407	nice = next_pri - nice;
		1408	if (nice < PRI_MIN) nice = PRI_MIN;
		1409	if (nice > PRI_MAX) nice = PRI_MAX;
		1410	next_pri = nice + PRI_BIAS;
1030		1411
1031	void	1412	void
1032	flush ()	1413	flush ()
1033	PROTOTYPE:	1414	PROTOTYPE:
1034	CODE:	1415	CODE:
1035	while (nreqs)	1416	while (nreqs)
1036	{	1417	{
1037	poll_wait ();	1418	poll_wait ();
1038	poll_cb ();	1419	poll_cb (0);
1039	}	1420	}
1040		1421
1041	void	1422	void
1042	poll()	1423	poll()
1043	PROTOTYPE:	1424	PROTOTYPE:
1044	CODE:	1425	CODE:
1045	if (nreqs)	1426	if (nreqs)
1046	{	1427	{
1047	poll_wait ();	1428	poll_wait ();
1048	poll_cb ();	1429	poll_cb (0);
1049	}	1430	}
1050		1431
1051	int	1432	int
1052	poll_fileno()	1433	poll_fileno()
1053	PROTOTYPE:	1434	PROTOTYPE:
…		…
1058		1439
1059	int	1440	int
1060	poll_cb(...)	1441	poll_cb(...)
1061	PROTOTYPE:	1442	PROTOTYPE:
1062	CODE:	1443	CODE:
1063	RETVAL = poll_cb ();	1444	RETVAL = poll_cb (0);
		1445	OUTPUT:
		1446	RETVAL
		1447
		1448	int
		1449	poll_some(int max = 0)
		1450	PROTOTYPE: $
		1451	CODE:
		1452	RETVAL = poll_cb (max);
1064	OUTPUT:	1453	OUTPUT:
1065	RETVAL	1454	RETVAL
1066		1455
1067	void	1456	void
1068	poll_wait()	1457	poll_wait()
…		…
1077	CODE:	1466	CODE:
1078	RETVAL = nreqs;	1467	RETVAL = nreqs;
1079	OUTPUT:	1468	OUTPUT:
1080	RETVAL	1469	RETVAL
1081		1470
		1471	PROTOTYPES: DISABLE
		1472
		1473	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
		1474
		1475	void
		1476	cancel (aio_req_ornot req)
		1477	CODE:
		1478	req_cancel (req);
		1479
		1480	void
		1481	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
		1482	CODE:
		1483	SvREFCNT_dec (req->callback);
		1484	req->callback = newSVsv (callback);
		1485
		1486	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
		1487
		1488	void
		1489	add (aio_req grp, ...)
		1490	PPCODE:
		1491	{
		1492	int i;
		1493	aio_req req;
		1494
		1495	if (grp->fd == 2)
		1496	croak ("cannot add requests to IO::AIO::GRP after the group finished");
		1497
		1498	for (i = 1; i < items; ++i )
		1499	{
		1500	if (GIMME_V != G_VOID)
		1501	XPUSHs (sv_2mortal (newSVsv (ST (i))));
		1502
		1503	req = SvAIO_REQ (ST (i));
		1504
		1505	if (req)
		1506	{
		1507	++grp->length;
		1508	req->grp = grp;
		1509
		1510	req->grp_prev = 0;
		1511	req->grp_next = grp->grp_first;
		1512
		1513	if (grp->grp_first)
		1514	grp->grp_first->grp_prev = req;
		1515
		1516	grp->grp_first = req;
		1517	}
		1518	}
		1519	}
		1520
		1521	void
		1522	cancel_subs (aio_req_ornot req)
		1523	CODE:
		1524	req_cancel_subs (req);
		1525
		1526	void
		1527	result (aio_req grp, ...)
		1528	CODE:
		1529	{
		1530	int i;
		1531	AV *av = newAV ();
		1532
		1533	for (i = 1; i < items; ++i )
		1534	av_push (av, newSVsv (ST (i)));
		1535
		1536	SvREFCNT_dec (grp->data);
		1537	grp->data = (SV *)av;
		1538	}
		1539
		1540	void
		1541	limit (aio_req grp, int limit)
		1542	CODE:
		1543	grp->fd2 = limit;
		1544	aio_grp_feed (grp);
		1545
		1546	void
		1547	feed (aio_req grp, SV *callback=&PL_sv_undef)
		1548	CODE:
		1549	{
		1550	SvREFCNT_dec (grp->fh2);
		1551	grp->fh2 = newSVsv (callback);
		1552
		1553	if (grp->fd2 <= 0)
		1554	grp->fd2 = 2;
		1555
		1556	aio_grp_feed (grp);
		1557	}
		1558

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