ViewVC Help

View File | Revision Log | Show Annotations | Download File

/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.38 by root, Sun Aug 28 10:51:33 2005 UTC vs.
Revision 1.74 by root, Wed Oct 25 17:57:30 2006 UTC

		1	/* solaris */
		2	#define _POSIX_PTHREAD_SEMANTICS 1
		3
		4	#if __linux
		5	# define _GNU_SOURCE
		6	#endif
		7
1	#define _REENTRANT 1	8	#define _REENTRANT 1
		9
2	#include <errno.h>	10	#include <errno.h>
3		11
4	#include "EXTERN.h"	12	#include "EXTERN.h"
5	#include "perl.h"	13	#include "perl.h"
6	#include "XSUB.h"	14	#include "XSUB.h"
…		…
8	#include "autoconf/config.h"	16	#include "autoconf/config.h"
9		17
10	#include <pthread.h>	18	#include <pthread.h>
11		19
12	#include <stddef.h>	20	#include <stddef.h>
		21	#include <errno.h>
		22	#include <sys/time.h>
		23	#include <sys/select.h>
13	#include <sys/types.h>	24	#include <sys/types.h>
14	#include <sys/stat.h>	25	#include <sys/stat.h>
15	#include <limits.h>	26	#include <limits.h>
16	#include <unistd.h>	27	#include <unistd.h>
17	#include <fcntl.h>	28	#include <fcntl.h>
…		…
31	# else	42	# else
32	# error sendfile support requested but not available	43	# error sendfile support requested but not available
33	# endif	44	# endif
34	#endif	45	#endif
35		46
		47	/* used for struct dirent, AIX doesn't provide it */
		48	#ifndef NAME_MAX
		49	# define NAME_MAX 4096
		50	#endif
		51
36	#if __ia64	52	#if __ia64
37	# define STACKSIZE 65536	53	# define STACKSIZE 65536
		54	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
		55	# define STACKSIZE PTHREAD_STACK_MIN
38	#else	56	#else
39	# define STACKSIZE 8192	57	# define STACKSIZE 16384
40	#endif	58	#endif
		59
		60	/* buffer size for various temporary buffers */
		61	#define AIO_BUFSIZE 65536
		62
		63	#define dBUF \
		64	char *aio_buf; \
		65	LOCK (wrklock); \
		66	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
		67	UNLOCK (wrklock); \
		68	if (!aio_buf) \
		69	return -1;
41		70
42	enum {	71	enum {
43	REQ_QUIT,	72	REQ_QUIT,
44	REQ_OPEN, REQ_CLOSE,	73	REQ_OPEN, REQ_CLOSE,
45	REQ_READ, REQ_WRITE, REQ_READAHEAD,	74	REQ_READ, REQ_WRITE, REQ_READAHEAD,
46	REQ_SENDFILE,	75	REQ_SENDFILE,
47	REQ_STAT, REQ_LSTAT, REQ_FSTAT,	76	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
48	REQ_FSYNC, REQ_FDATASYNC,	77	REQ_FSYNC, REQ_FDATASYNC,
49	REQ_UNLINK, REQ_RMDIR,	78	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
50	REQ_READDIR,	79	REQ_READDIR,
51	REQ_SYMLINK,	80	REQ_LINK, REQ_SYMLINK,
		81	REQ_GROUP, REQ_NOP,
		82	REQ_BUSY,
52	};	83	};
53		84
		85	#define AIO_REQ_KLASS "IO::AIO::REQ"
		86	#define AIO_GRP_KLASS "IO::AIO::GRP"
		87
54	typedef struct aio_cb {	88	typedef struct aio_cb
		89	{
55	struct aio_cb *volatile next;	90	struct aio_cb *volatile next;
56		91
57	int type;	92	SV *data, *callback;
58		93	SV *fh, *fh2;
59	/* should receive a cleanup, with unions */	94	void *dataptr, *data2ptr;
60	int fd, fd2;	95	Stat_t *statdata;
61	off_t offset;	96	off_t offset;
62	size_t length;	97	size_t length;
63	ssize_t result;	98	ssize_t result;
		99
		100	STRLEN dataoffset;
		101	int type;
		102	int fd, fd2;
		103	int errorno;
64	mode_t mode; /* open */	104	mode_t mode; /* open */
65	int errorno;
66	SV *data, *callback;
67	SV *fh, *fh2;
68	void *dataptr, *data2ptr;
69	STRLEN dataoffset;
70		105
71	Stat_t *statdata;	106	unsigned char flags;
		107	unsigned char pri;
		108
		109	SV *self; /* the perl counterpart of this request, if any */
		110	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
72	} aio_cb;	111	} aio_cb;
73		112
		113	enum {
		114	FLAG_CANCELLED = 0x01,
		115	};
		116
74	typedef aio_cb *aio_req;	117	typedef aio_cb *aio_req;
		118	typedef aio_cb *aio_req_ornot;
		119
		120	enum {
		121	PRI_MIN = -4,
		122	PRI_MAX = 4,
		123
		124	DEFAULT_PRI = 0,
		125	PRI_BIAS = -PRI_MIN,
		126	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
		127	};
		128
		129	static int next_pri = DEFAULT_PRI + PRI_BIAS;
75		130
76	static int started, wanted;	131	static int started, wanted;
77	static volatile int nreqs;	132	static volatile int nreqs;
78	static int max_outstanding = 1<<30;
79	static int respipe [2];	133	static int respipe [2];
80		134
		135	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
		136	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
		137	#else
		138	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
		139	#endif
		140
		141	#define LOCK(mutex) pthread_mutex_lock (&(mutex))
		142	#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
		143
		144	/* worker threasd management */
		145	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
		146
		147	typedef struct worker {
		148	/* locked by wrklock */
		149	struct worker *prev, *next;
		150
		151	pthread_t tid;
		152
		153	/* locked by reslock, reqlock or wrklock */
		154	aio_req req; /* currently processed request */
		155	void *dbuf;
		156	DIR *dirp;
		157	} worker;
		158
		159	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
		160
		161	static void worker_clear (worker *wrk)
		162	{
		163	if (wrk->dirp)
		164	{
		165	closedir (wrk->dirp);
		166	wrk->dirp = 0;
		167	}
		168
		169	if (wrk->dbuf)
		170	{
		171	free (wrk->dbuf);
		172	wrk->dbuf = 0;
		173	}
		174	}
		175
		176	static void worker_free (worker *wrk)
		177	{
		178	wrk->next->prev = wrk->prev;
		179	wrk->prev->next = wrk->next;
		180
		181	free (wrk);
		182	}
		183
81	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	184	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
82	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;	185	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
83	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	186	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
84		187
85	static volatile aio_req reqs, reqe; /* queue start, queue end */	188	/*
86	static volatile aio_req ress, rese; /* queue start, queue end */	189	* a somewhat faster data structure might be nice, but
		190	* with 8 priorities this actually needs <20 insns
		191	* per shift, the most expensive operation.
		192	*/
		193	typedef struct {
		194	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
		195	int size;
		196	} reqq;
87		197
		198	static reqq req_queue;
		199	static reqq res_queue;
		200
		201	int reqq_push (reqq *q, aio_req req)
		202	{
		203	int pri = req->pri;
		204	req->next = 0;
		205
		206	if (q->qe[pri])
		207	{
		208	q->qe[pri]->next = req;
		209	q->qe[pri] = req;
		210	}
		211	else
		212	q->qe[pri] = q->qs[pri] = req;
		213
		214	return q->size++;
		215	}
		216
		217	aio_req reqq_shift (reqq *q)
		218	{
		219	int pri;
		220
		221	if (!q->size)
		222	return 0;
		223
		224	--q->size;
		225
		226	for (pri = NUM_PRI; pri--; )
		227	{
		228	aio_req req = q->qs[pri];
		229
		230	if (req)
		231	{
		232	if (!(q->qs[pri] = req->next))
		233	q->qe[pri] = 0;
		234
		235	return req;
		236	}
		237	}
		238
		239	abort ();
		240	}
		241
		242	static int poll_cb ();
		243	static void req_invoke (aio_req req);
88	static void free_req (aio_req req)	244	static void req_free (aio_req req);
89	{	245	static void req_cancel (aio_req req);
90	if (req->data)
91	SvREFCNT_dec (req->data);
92		246
		247	/* must be called at most once */
		248	static SV *req_sv (aio_req req, const char *klass)
		249	{
93	if (req->fh)	250	if (!req->self)
94	SvREFCNT_dec (req->fh);	251	{
		252	req->self = (SV *)newHV ();
		253	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
		254	}
95		255
96	if (req->fh2)	256	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));
		257	}
		258
		259	static aio_req SvAIO_REQ (SV *sv)
		260	{
		261	MAGIC *mg;
		262
		263	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))
		264	croak ("object of class " AIO_REQ_KLASS " expected");
		265
		266	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
		267
		268	return mg ? (aio_req)mg->mg_ptr : 0;
		269	}
		270
		271	static void aio_grp_feed (aio_req grp)
		272	{
		273	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))
		274	{
		275	int old_len = grp->length;
		276
		277	if (grp->fh2 && SvOK (grp->fh2))
		278	{
		279	dSP;
		280
		281	ENTER;
		282	SAVETMPS;
		283	PUSHMARK (SP);
		284	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
		285	PUTBACK;
		286	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);
		287	SPAGAIN;
		288	FREETMPS;
		289	LEAVE;
		290	}
		291
		292	/* stop if no progress has been made */
		293	if (old_len == grp->length)
		294	{
97	SvREFCNT_dec (req->fh2);	295	SvREFCNT_dec (grp->fh2);
98		296	grp->fh2 = 0;
99	if (req->statdata)	297	break;
100	Safefree (req->statdata);	298	}
101
102	if (req->callback)
103	SvREFCNT_dec (req->callback);
104
105	if (req->type == REQ_READDIR && req->result >= 0)
106	free (req->data2ptr);
107
108	Safefree (req);
109	}
110
111	static void
112	poll_wait ()
113	{
114	if (nreqs && !ress)
115	{	299	}
		300	}
		301
		302	static void aio_grp_dec (aio_req grp)
		303	{
		304	--grp->length;
		305
		306	/* call feeder, if applicable */
		307	aio_grp_feed (grp);
		308
		309	/* finish, if done */
		310	if (!grp->length && grp->fd)
		311	{
		312	req_invoke (grp);
		313	req_free (grp);
		314	}
		315	}
		316
		317	static void poll_wait ()
		318	{
116	fd_set rfd;	319	fd_set rfd;
		320
		321	while (nreqs)
		322	{
		323	int size;
		324	#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
		325	LOCK (reslock);
		326	#endif
		327	size = res_queue.size;
		328	#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
		329	UNLOCK (reslock);
		330	#endif
		331
		332	if (size)
		333	return;
		334
117	FD_ZERO(&rfd);	335	FD_ZERO(&rfd);
118	FD_SET(respipe [0], &rfd);	336	FD_SET(respipe [0], &rfd);
119		337
120	select (respipe [0] + 1, &rfd, 0, 0, 0);	338	select (respipe [0] + 1, &rfd, 0, 0, 0);
121	}	339	}
122	}	340	}
123		341
124	static int	342	static void req_invoke (aio_req req)
125	poll_cb ()	343	{
		344	dSP;
		345
		346	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
		347	{
		348	errno = req->errorno;
		349
		350	ENTER;
		351	SAVETMPS;
		352	PUSHMARK (SP);
		353	EXTEND (SP, 1);
		354
		355	switch (req->type)
		356	{
		357	case REQ_READDIR:
		358	{
		359	SV *rv = &PL_sv_undef;
		360
		361	if (req->result >= 0)
		362	{
		363	int i;
		364	char *buf = req->data2ptr;
		365	AV *av = newAV ();
		366
		367	av_extend (av, req->result - 1);
		368
		369	for (i = 0; i < req->result; ++i)
		370	{
		371	SV *sv = newSVpv (buf, 0);
		372
		373	av_store (av, i, sv);
		374	buf += SvCUR (sv) + 1;
		375	}
		376
		377	rv = sv_2mortal (newRV_noinc ((SV *)av));
		378	}
		379
		380	PUSHs (rv);
		381	}
		382	break;
		383
		384	case REQ_OPEN:
		385	{
		386	/* convert fd to fh */
		387	SV *fh;
		388
		389	PUSHs (sv_2mortal (newSViv (req->result)));
		390	PUTBACK;
		391	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
		392	SPAGAIN;
		393
		394	fh = SvREFCNT_inc (POPs);
		395
		396	PUSHMARK (SP);
		397	XPUSHs (sv_2mortal (fh));
		398	}
		399	break;
		400
		401	case REQ_GROUP:
		402	req->fd = 2; /* mark group as finished */
		403
		404	if (req->data)
		405	{
		406	int i;
		407	AV *av = (AV *)req->data;
		408
		409	EXTEND (SP, AvFILL (av) + 1);
		410	for (i = 0; i <= AvFILL (av); ++i)
		411	PUSHs (*av_fetch (av, i, 0));
		412	}
		413	break;
		414
		415	case REQ_NOP:
		416	case REQ_BUSY:
		417	break;
		418
		419	default:
		420	PUSHs (sv_2mortal (newSViv (req->result)));
		421	break;
		422	}
		423
		424
		425	PUTBACK;
		426	call_sv (req->callback, G_VOID | G_EVAL);
		427	SPAGAIN;
		428
		429	FREETMPS;
		430	LEAVE;
		431	}
		432
		433	if (req->grp)
		434	{
		435	aio_req grp = req->grp;
		436
		437	/* unlink request */
		438	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
		439	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
		440
		441	if (grp->grp_first == req)
		442	grp->grp_first = req->grp_next;
		443
		444	aio_grp_dec (grp);
		445	}
		446
		447	if (SvTRUE (ERRSV))
		448	{
		449	req_free (req);
		450	croak (0);
		451	}
		452	}
		453
		454	static void req_free (aio_req req)
		455	{
		456	if (req->self)
		457	{
		458	sv_unmagic (req->self, PERL_MAGIC_ext);
		459	SvREFCNT_dec (req->self);
		460	}
		461
		462	SvREFCNT_dec (req->data);
		463	SvREFCNT_dec (req->fh);
		464	SvREFCNT_dec (req->fh2);
		465	SvREFCNT_dec (req->callback);
		466	Safefree (req->statdata);
		467
		468	if (req->type == REQ_READDIR)
		469	free (req->data2ptr);
		470
		471	Safefree (req);
		472	}
		473
		474	static void req_cancel_subs (aio_req grp)
		475	{
		476	aio_req sub;
		477
		478	if (grp->type != REQ_GROUP)
		479	return;
		480
		481	SvREFCNT_dec (grp->fh2);
		482	grp->fh2 = 0;
		483
		484	for (sub = grp->grp_first; sub; sub = sub->grp_next)
		485	req_cancel (sub);
		486	}
		487
		488	static void req_cancel (aio_req req)
		489	{
		490	req->flags |= FLAG_CANCELLED;
		491
		492	req_cancel_subs (req);
		493	}
		494
		495	static int poll_cb ()
126	{	496	{
127	dSP;	497	dSP;
128	int count = 0;	498	int count = 0;
129	int do_croak = 0;	499	int do_croak = 0;
130	aio_req req;	500	aio_req req;
131		501
132	for (;;)	502	for (;;)
133	{	503	{
134	pthread_mutex_lock (&reslock);	504	LOCK (reslock);
135	req = ress;	505	req = reqq_shift (&res_queue);
136		506
137	if (req)	507	if (req)
138	{	508	{
139	ress = req->next;
140
141	if (!ress)	509	if (!res_queue.size)
142	{	510	{
143	/* read any signals sent by the worker threads */	511	/* read any signals sent by the worker threads */
144	char buf [32];	512	char buf [32];
145	while (read (respipe [0], buf, 32) == 32)	513	while (read (respipe [0], buf, 32) == 32)
146	;	514	;
147
148	rese = 0;
149	}	515	}
150	}	516	}
151		517
152	pthread_mutex_unlock (&reslock);	518	UNLOCK (reslock);
153		519
154	if (!req)	520	if (!req)
155	break;	521	break;
156		522
157	nreqs--;	523	--nreqs;
158		524
159	if (req->type == REQ_QUIT)	525	if (req->type == REQ_QUIT)
160	started--;	526	started--;
		527	else if (req->type == REQ_GROUP && req->length)
		528	{
		529	req->fd = 1; /* mark request as delayed */
		530	continue;
		531	}
161	else	532	else
162	{	533	{
163	int errorno = errno;
164	errno = req->errorno;
165
166	if (req->type == REQ_READ)	534	if (req->type == REQ_READ)
167	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));	535	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
168		536
169	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))	537	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
170	SvREADONLY_off (req->data);	538	SvREADONLY_off (req->data);
…		…
174	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	542	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
175	PL_laststatval = req->result;	543	PL_laststatval = req->result;
176	PL_statcache = *(req->statdata);	544	PL_statcache = *(req->statdata);
177	}	545	}
178		546
179	ENTER;	547	req_invoke (req);
180	PUSHMARK (SP);
181		548
182	if (req->type == REQ_READDIR)
183	{
184	SV *rv = &PL_sv_undef;
185
186	if (req->result >= 0)
187	{
188	char *buf = req->data2ptr;
189	AV *av = newAV ();
190
191	while (req->result)
192	{
193	SV *sv = newSVpv (buf, 0);
194
195	av_push (av, sv);
196	buf += SvCUR (sv) + 1;
197	req->result--;
198	}
199
200	rv = sv_2mortal (newRV_noinc ((SV *)av));
201	}
202
203	XPUSHs (rv);
204	}
205	else
206	{
207	XPUSHs (sv_2mortal (newSViv (req->result)));
208
209	if (req->type == REQ_OPEN)
210	{
211	/* convert fd to fh */
212	SV *fh;
213
214	PUTBACK;
215	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
216	SPAGAIN;
217
218	fh = SvREFCNT_inc (POPs);
219
220	PUSHMARK (SP);
221	XPUSHs (sv_2mortal (fh));
222	}
223	}
224
225	if (SvOK (req->callback))
226	{
227	PUTBACK;
228	call_sv (req->callback, G_VOID | G_EVAL);
229	SPAGAIN;
230
231	if (SvTRUE (ERRSV))
232	{
233	free_req (req);
234	croak (0);
235	}
236	}
237
238	LEAVE;
239
240	errno = errorno;
241	count++;	549	count++;
242	}	550	}
243		551
244	free_req (req);	552	req_free (req);
245	}	553	}
246		554
247	return count;	555	return count;
248	}	556	}
249		557
250	static void *aio_proc(void *arg);	558	static void *aio_proc(void *arg);
251		559
252	static void
253	start_thread (void)	560	static void start_thread (void)
254	{	561	{
255	sigset_t fullsigset, oldsigset;	562	sigset_t fullsigset, oldsigset;
256	pthread_t tid;
257	pthread_attr_t attr;	563	pthread_attr_t attr;
		564
		565	worker *wrk = calloc (1, sizeof (worker));
		566
		567	if (!wrk)
		568	croak ("unable to allocate worker thread data");
258		569
259	pthread_attr_init (&attr);	570	pthread_attr_init (&attr);
260	pthread_attr_setstacksize (&attr, STACKSIZE);	571	pthread_attr_setstacksize (&attr, STACKSIZE);
261	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);	572	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
262		573
263	sigfillset (&fullsigset);	574	sigfillset (&fullsigset);
		575
		576	LOCK (wrklock);
264	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);	577	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
265		578
266	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)	579	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
		580	{
		581	wrk->prev = &wrk_first;
		582	wrk->next = wrk_first.next;
		583	wrk_first.next->prev = wrk;
		584	wrk_first.next = wrk;
267	started++;	585	started++;
		586	}
		587	else
		588	free (wrk);
268		589
269	sigprocmask (SIG_SETMASK, &oldsigset, 0);	590	sigprocmask (SIG_SETMASK, &oldsigset, 0);
		591	UNLOCK (wrklock);
270	}	592	}
271		593
272	static void	594	static void req_send (aio_req req)
273	send_req (aio_req req)
274	{	595	{
275	while (started < wanted && nreqs >= started)	596	while (started < wanted && nreqs >= started)
276	start_thread ();	597	start_thread ();
277		598
278	nreqs++;	599	++nreqs;
279		600
280	pthread_mutex_lock (&reqlock);	601	LOCK (reqlock);
281		602	reqq_push (&req_queue, req);
282	req->next = 0;
283
284	if (reqe)
285	{
286	reqe->next = req;
287	reqe = req;
288	}
289	else
290	reqe = reqs = req;
291
292	pthread_cond_signal (&reqwait);	603	pthread_cond_signal (&reqwait);
293	pthread_mutex_unlock (&reqlock);	604	UNLOCK (reqlock);
294
295	if (nreqs > max_outstanding)
296	for (;;)
297	{
298	poll_cb ();
299
300	if (nreqs <= max_outstanding)
301	break;
302
303	poll_wait ();
304	}
305	}	605	}
306		606
307	static void	607	static void end_thread (void)
308	end_thread (void)
309	{	608	{
310	aio_req req;	609	aio_req req;
		610
311	Newz (0, req, 1, aio_cb);	611	Newz (0, req, 1, aio_cb);
		612
312	req->type = REQ_QUIT;	613	req->type = REQ_QUIT;
		614	req->pri = PRI_MAX + PRI_BIAS;
313		615
314	send_req (req);	616	req_send (req);
315	}	617	}
316		618
317	static void min_parallel (int nthreads)	619	static void min_parallel (int nthreads)
318	{	620	{
319	if (wanted < nthreads)	621	if (wanted < nthreads)
…		…
364	* normal read/write by using a mutex. slows down execution a lot,	666	* normal read/write by using a mutex. slows down execution a lot,
365	* but that's your problem, not mine.	667	* but that's your problem, not mine.
366	*/	668	*/
367	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;	669	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
368		670
369	static ssize_t	671	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
370	pread (int fd, void *buf, size_t count, off_t offset)
371	{	672	{
372	ssize_t res;	673	ssize_t res;
373	off_t ooffset;	674	off_t ooffset;
374		675
375	pthread_mutex_lock (&preadwritelock);	676	LOCK (preadwritelock);
376	ooffset = lseek (fd, 0, SEEK_CUR);	677	ooffset = lseek (fd, 0, SEEK_CUR);
377	lseek (fd, offset, SEEK_SET);	678	lseek (fd, offset, SEEK_SET);
378	res = read (fd, buf, count);	679	res = read (fd, buf, count);
379	lseek (fd, ooffset, SEEK_SET);	680	lseek (fd, ooffset, SEEK_SET);
380	pthread_mutex_unlock (&preadwritelock);	681	UNLOCK (preadwritelock);
381		682
382	return res;	683	return res;
383	}	684	}
384		685
385	static ssize_t
386	pwrite (int fd, void *buf, size_t count, off_t offset)	686	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
387	{	687	{
388	ssize_t res;	688	ssize_t res;
389	off_t ooffset;	689	off_t ooffset;
390		690
391	pthread_mutex_lock (&preadwritelock);	691	LOCK (preadwritelock);
392	ooffset = lseek (fd, 0, SEEK_CUR);	692	ooffset = lseek (fd, 0, SEEK_CUR);
393	lseek (fd, offset, SEEK_SET);	693	lseek (fd, offset, SEEK_SET);
394	res = write (fd, buf, count);	694	res = write (fd, buf, count);
395	lseek (fd, offset, SEEK_SET);	695	lseek (fd, offset, SEEK_SET);
396	pthread_mutex_unlock (&preadwritelock);	696	UNLOCK (preadwritelock);
397		697
398	return res;	698	return res;
399	}	699	}
400	#endif	700	#endif
401		701
…		…
404	#endif	704	#endif
405		705
406	#if !HAVE_READAHEAD	706	#if !HAVE_READAHEAD
407	# define readahead aio_readahead	707	# define readahead aio_readahead
408		708
409	static ssize_t
410	readahead (int fd, off_t offset, size_t count)	709	static ssize_t readahead (int fd, off_t offset, size_t count)
411	{	710	{
412	char readahead_buf[4096];	711	dBUF;
413		712
414	while (count > 0)	713	while (count > 0)
415	{	714	{
416	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);	715	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
417		716
418	pread (fd, readahead_buf, len, offset);	717	pread (fd, aio_buf, len, offset);
419	offset += len;	718	offset += len;
420	count -= len;	719	count -= len;
421	}	720	}
422		721
423	errno = 0;	722	errno = 0;
…		…
427	#if !HAVE_READDIR_R	726	#if !HAVE_READDIR_R
428	# define readdir_r aio_readdir_r	727	# define readdir_r aio_readdir_r
429		728
430	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;	729	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
431		730
432	static int
433	readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)	731	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
434	{	732	{
435	struct dirent *e;	733	struct dirent *e;
436	int errorno;	734	int errorno;
437		735
438	pthread_mutex_lock (&readdirlock);	736	LOCK (readdirlock);
439		737
440	e = readdir (dirp);	738	e = readdir (dirp);
441	errorno = errno;	739	errorno = errno;
442		740
443	if (e)	741	if (e)
…		…
446	strcpy (ent->d_name, e->d_name);	744	strcpy (ent->d_name, e->d_name);
447	}	745	}
448	else	746	else
449	*res = 0;	747	*res = 0;
450		748
451	pthread_mutex_unlock (&readdirlock);	749	UNLOCK (readdirlock);
452		750
453	errno = errorno;	751	errno = errorno;
454	return e ? 0 : -1;	752	return e ? 0 : -1;
455	}	753	}
456	#endif	754	#endif
457		755
458	/* sendfile always needs emulation */	756	/* sendfile always needs emulation */
459	static ssize_t
460	sendfile_ (int ofd, int ifd, off_t offset, size_t count)	757	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
461	{	758	{
462	ssize_t res;	759	ssize_t res;
463		760
464	if (!count)	761	if (!count)
465	return 0;	762	return 0;
…		…
514	#endif	811	#endif
515	)	812	)
516	)	813	)
517	{	814	{
518	/* emulate sendfile. this is a major pain in the ass */	815	/* emulate sendfile. this is a major pain in the ass */
519	char buf[4096];	816	dBUF;
		817
520	res = 0;	818	res = 0;
521		819
522	while (count)	820	while (count)
523	{	821	{
524	ssize_t cnt;	822	ssize_t cnt;
525		823
526	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);	824	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
527		825
528	if (cnt <= 0)	826	if (cnt <= 0)
529	{	827	{
530	if (cnt && !res) res = -1;	828	if (cnt && !res) res = -1;
531	break;	829	break;
532	}	830	}
533		831
534	cnt = write (ofd, buf, cnt);	832	cnt = write (ofd, aio_buf, cnt);
535		833
536	if (cnt <= 0)	834	if (cnt <= 0)
537	{	835	{
538	if (cnt && !res) res = -1;	836	if (cnt && !res) res = -1;
539	break;	837	break;
…		…
547		845
548	return res;	846	return res;
549	}	847	}
550		848
551	/* read a full directory */	849	/* read a full directory */
552	static int	850	static void scandir_ (aio_req req, worker *self)
553	scandir_ (const char *path, void **namesp)
554	{	851	{
555	DIR *dirp = opendir (path);	852	DIR *dirp;
556	union	853	union
557	{	854	{
558	struct dirent d;	855	struct dirent d;
559	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];	856	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
560	} u;	857	} *u;
561	struct dirent *entp;	858	struct dirent *entp;
562	char *name, *names;	859	char *name, *names;
563	int memlen = 4096;	860	int memlen = 4096;
564	int memofs = 0;	861	int memofs = 0;
565	int res = 0;	862	int res = 0;
566	int errorno;	863	int errorno;
567		864
568	if (!dirp)	865	LOCK (wrklock);
569	return -1;	866	self->dirp = dirp = opendir (req->dataptr);
		867	self->dbuf = u = malloc (sizeof (*u));
		868	UNLOCK (wrklock);
570		869
571	names = malloc (memlen);	870	req->data2ptr = names = malloc (memlen);
572		871
		872	if (dirp && u && names)
573	for (;;)	873	for (;;)
574	{	874	{
		875	errno = 0;
575	errno = 0, readdir_r (dirp, &u.d, &entp);	876	readdir_r (dirp, &u->d, &entp);
576		877
577	if (!entp)	878	if (!entp)
578	break;	879	break;
579		880
580	name = entp->d_name;	881	name = entp->d_name;
581		882
582	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))	883	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
583	{	884	{
584	int len = strlen (name) + 1;	885	int len = strlen (name) + 1;
585		886
586	res++;	887	res++;
587		888
588	while (memofs + len > memlen)	889	while (memofs + len > memlen)
589	{	890	{
590	memlen *= 2;	891	memlen *= 2;
		892	LOCK (wrklock);
591	names = realloc (names, memlen);	893	req->data2ptr = names = realloc (names, memlen);
		894	UNLOCK (wrklock);
		895
592	if (!names)	896	if (!names)
593	break;	897	break;
594	}	898	}
595		899
596	memcpy (names + memofs, name, len);	900	memcpy (names + memofs, name, len);
597	memofs += len;	901	memofs += len;
598	}	902	}
599	}	903	}
600		904
601	errorno = errno;
602	closedir (dirp);
603
604	if (errorno)	905	if (errno)
605	{
606	free (names);
607	errno = errorno;
608	res = -1;	906	res = -1;
609	}	907
610		908	req->result = res;
611	*namesp = (void *)names;
612	return res;
613	}	909	}
614		910
615	/*****************************************************************************/	911	/*****************************************************************************/
616		912
617	static void *
618	aio_proc (void *thr_arg)	913	static void *aio_proc (void *thr_arg)
619	{	914	{
620	aio_req req;	915	aio_req req;
621	int type;	916	int type;
		917	worker *self = (worker *)thr_arg;
622		918
623	do	919	do
624	{	920	{
625	pthread_mutex_lock (&reqlock);	921	LOCK (reqlock);
626		922
627	for (;;)	923	for (;;)
628	{	924	{
629	req = reqs;	925	self->req = req = reqq_shift (&req_queue);
630
631	if (reqs)
632	{
633	reqs = reqs->next;
634	if (!reqs) reqe = 0;
635	}
636		926
637	if (req)	927	if (req)
638	break;	928	break;
639		929
640	pthread_cond_wait (&reqwait, &reqlock);	930	pthread_cond_wait (&reqwait, &reqlock);
641	}	931	}
642		932
643	pthread_mutex_unlock (&reqlock);	933	UNLOCK (reqlock);
644		934
645	errno = 0; /* strictly unnecessary */	935	errno = 0; /* strictly unnecessary */
		936	type = req->type; /* remember type for QUIT check */
646		937
647	type = req->type;	938	if (!(req->flags & FLAG_CANCELLED))
648
649	switch (type)	939	switch (type)
650	{	940	{
651	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;	941	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
652	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;	942	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
653		943
654	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	944	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
655	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;	945	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length, self); break;
656		946
657	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	947	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
658	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	948	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
659	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	949	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
660		950
661	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;	951	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
662	case REQ_CLOSE: req->result = close (req->fd); break;	952	case REQ_CLOSE: req->result = close (req->fd); break;
663	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	953	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
664	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;	954	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
		955	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
		956	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
665	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;	957	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
666		958
667	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	959	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
668	case REQ_FSYNC: req->result = fsync (req->fd); break;	960	case REQ_FSYNC: req->result = fsync (req->fd); break;
669	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;	961	case REQ_READDIR: scandir_ (req, self); break;
670		962
		963	case REQ_BUSY:
		964	{
		965	struct timeval tv;
		966
		967	tv.tv_sec = req->fd;
		968	tv.tv_usec = req->fd2;
		969
		970	req->result = select (0, 0, 0, 0, &tv);
		971	}
		972
		973	case REQ_GROUP:
		974	case REQ_NOP:
671	case REQ_QUIT:	975	case REQ_QUIT:
672	break;	976	break;
673		977
674	default:	978	default:
675	req->result = ENOSYS;	979	req->result = ENOSYS;
676	break;	980	break;
677	}	981	}
678		982
679	req->errorno = errno;	983	req->errorno = errno;
680		984
681	pthread_mutex_lock (&reslock);	985	LOCK (reslock);
682		986
683	req->next = 0;	987	if (!reqq_push (&res_queue, req))
684
685	if (rese)
686	{
687	rese->next = req;
688	rese = req;
689	}
690	else
691	{
692	rese = ress = req;
693
694	/* write a dummy byte to the pipe so fh becomes ready */	988	/* write a dummy byte to the pipe so fh becomes ready */
695	write (respipe [1], &respipe, 1);	989	write (respipe [1], &respipe, 1);
696	}
697		990
698	pthread_mutex_unlock (&reslock);	991	self->req = 0;
		992	worker_clear (self);
		993
		994	UNLOCK (reslock);
699	}	995	}
700	while (type != REQ_QUIT);	996	while (type != REQ_QUIT);
701		997
		998	LOCK (wrklock);
		999	worker_free (self);
		1000	UNLOCK (wrklock);
		1001
702	return 0;	1002	return 0;
703	}	1003	}
704		1004
705	/*****************************************************************************/	1005	/*****************************************************************************/
706		1006
707	static void atfork_prepare (void)	1007	static void atfork_prepare (void)
708	{	1008	{
709	pthread_mutex_lock (&reqlock);	1009	LOCK (wrklock);
710	pthread_mutex_lock (&reslock);	1010	LOCK (reqlock);
		1011	LOCK (reslock);
711	#if !HAVE_PREADWRITE	1012	#if !HAVE_PREADWRITE
712	pthread_mutex_lock (&preadwritelock);	1013	LOCK (preadwritelock);
713	#endif	1014	#endif
714	#if !HAVE_READDIR_R	1015	#if !HAVE_READDIR_R
715	pthread_mutex_lock (&readdirlock);	1016	LOCK (readdirlock);
716	#endif	1017	#endif
717	}	1018	}
718		1019
719	static void atfork_parent (void)	1020	static void atfork_parent (void)
720	{	1021	{
721	#if !HAVE_READDIR_R	1022	#if !HAVE_READDIR_R
722	pthread_mutex_unlock (&readdirlock);	1023	UNLOCK (readdirlock);
723	#endif	1024	#endif
724	#if !HAVE_PREADWRITE	1025	#if !HAVE_PREADWRITE
725	pthread_mutex_unlock (&preadwritelock);	1026	UNLOCK (preadwritelock);
726	#endif	1027	#endif
727	pthread_mutex_unlock (&reslock);	1028	UNLOCK (reslock);
728	pthread_mutex_unlock (&reqlock);	1029	UNLOCK (reqlock);
		1030	UNLOCK (wrklock);
729	}	1031	}
730		1032
731	static void atfork_child (void)	1033	static void atfork_child (void)
732	{	1034	{
733	aio_req prv;	1035	aio_req prv;
734		1036
		1037	while (prv = reqq_shift (&req_queue))
		1038	req_free (prv);
		1039
		1040	while (prv = reqq_shift (&res_queue))
		1041	req_free (prv);
		1042
		1043	while (wrk_first.next != &wrk_first)
		1044	{
		1045	worker *wrk = wrk_first.next;
		1046
		1047	if (wrk->req)
		1048	req_free (wrk->req);
		1049
		1050	worker_clear (wrk);
		1051	worker_free (wrk);
		1052	}
		1053
735	started = 0;	1054	started = 0;
736		1055	nreqs = 0;
737	while (reqs)
738	{
739	prv = reqs;
740	reqs = prv->next;
741	free_req (prv);
742	}
743
744	reqs = reqe = 0;
745
746	while (ress)
747	{
748	prv = ress;
749	ress = prv->next;
750	free_req (prv);
751	}
752
753	ress = rese = 0;
754		1056
755	close (respipe [0]);	1057	close (respipe [0]);
756	close (respipe [1]);	1058	close (respipe [1]);
757	create_pipe ();	1059	create_pipe ();
758		1060
759	atfork_parent ();	1061	atfork_parent ();
760	}	1062	}
761		1063
762	#define dREQ \	1064	#define dREQ \
763	aio_req req; \	1065	aio_req req; \
		1066	int req_pri = next_pri; \
		1067	next_pri = DEFAULT_PRI + PRI_BIAS; \
764	\	1068	\
765	if (SvOK (callback) && !SvROK (callback)) \	1069	if (SvOK (callback) && !SvROK (callback)) \
766	croak ("clalback must be undef or of reference type"); \	1070	croak ("callback must be undef or of reference type"); \
767	\	1071	\
768	Newz (0, req, 1, aio_cb); \	1072	Newz (0, req, 1, aio_cb); \
769	if (!req) \	1073	if (!req) \
770	croak ("out of memory during aio_req allocation"); \	1074	croak ("out of memory during aio_req allocation"); \
771	\	1075	\
772	req->callback = newSVsv (callback);	1076	req->callback = newSVsv (callback); \
		1077	req->pri = req_pri
		1078
		1079	#define REQ_SEND \
		1080	req_send (req); \
		1081	\
		1082	if (GIMME_V != G_VOID) \
		1083	XPUSHs (req_sv (req, AIO_REQ_KLASS));
773		1084
774	MODULE = IO::AIO PACKAGE = IO::AIO	1085	MODULE = IO::AIO PACKAGE = IO::AIO
775		1086
776	PROTOTYPES: ENABLE	1087	PROTOTYPES: ENABLE
777		1088
778	BOOT:	1089	BOOT:
779	{	1090	{
		1091	HV *stash = gv_stashpv ("IO::AIO", 1);
		1092	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
		1093	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
		1094	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
		1095
780	create_pipe ();	1096	create_pipe ();
781	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	1097	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
782	}	1098	}
783		1099
784	void	1100	void
785	min_parallel(nthreads)	1101	min_parallel (nthreads)
786	int nthreads	1102	int nthreads
787	PROTOTYPE: $	1103	PROTOTYPE: $
788		1104
789	void	1105	void
790	max_parallel(nthreads)	1106	max_parallel (nthreads)
791	int nthreads	1107	int nthreads
792	PROTOTYPE: $	1108	PROTOTYPE: $
793		1109
794	int
795	max_outstanding(nreqs)
796	int nreqs
797	PROTOTYPE: $
798	CODE:
799	RETVAL = max_outstanding;
800	max_outstanding = nreqs;
801
802	void	1110	void
803	aio_open(pathname,flags,mode,callback=&PL_sv_undef)	1111	aio_open (pathname,flags,mode,callback=&PL_sv_undef)
804	SV * pathname	1112	SV * pathname
805	int flags	1113	int flags
806	int mode	1114	int mode
807	SV * callback	1115	SV * callback
808	PROTOTYPE: $$$;$	1116	PROTOTYPE: $$$;$
809	CODE:	1117	PPCODE:
810	{	1118	{
811	dREQ;	1119	dREQ;
812		1120
813	req->type = REQ_OPEN;	1121	req->type = REQ_OPEN;
814	req->data = newSVsv (pathname);	1122	req->data = newSVsv (pathname);
815	req->dataptr = SvPVbyte_nolen (req->data);	1123	req->dataptr = SvPVbyte_nolen (req->data);
816	req->fd = flags;	1124	req->fd = flags;
817	req->mode = mode;	1125	req->mode = mode;
818		1126
819	send_req (req);	1127	REQ_SEND;
820	}	1128	}
821		1129
822	void	1130	void
823	aio_close(fh,callback=&PL_sv_undef)	1131	aio_close (fh,callback=&PL_sv_undef)
824	SV * fh	1132	SV * fh
825	SV * callback	1133	SV * callback
826	PROTOTYPE: $;$	1134	PROTOTYPE: $;$
827	ALIAS:	1135	ALIAS:
828	aio_close = REQ_CLOSE	1136	aio_close = REQ_CLOSE
829	aio_fsync = REQ_FSYNC	1137	aio_fsync = REQ_FSYNC
830	aio_fdatasync = REQ_FDATASYNC	1138	aio_fdatasync = REQ_FDATASYNC
831	CODE:	1139	PPCODE:
832	{	1140	{
833	dREQ;	1141	dREQ;
834		1142
835	req->type = ix;	1143	req->type = ix;
836	req->fh = newSVsv (fh);	1144	req->fh = newSVsv (fh);
837	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1145	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
838		1146
839	send_req (req);	1147	REQ_SEND (req);
840	}	1148	}
841		1149
842	void	1150	void
843	aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1151	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
844	SV * fh	1152	SV * fh
845	UV offset	1153	UV offset
846	UV length	1154	UV length
847	SV * data	1155	SV * data
848	UV dataoffset	1156	UV dataoffset
849	SV * callback	1157	SV * callback
850	ALIAS:	1158	ALIAS:
851	aio_read = REQ_READ	1159	aio_read = REQ_READ
852	aio_write = REQ_WRITE	1160	aio_write = REQ_WRITE
853	PROTOTYPE: $$$$$;$	1161	PROTOTYPE: $$$$$;$
854	CODE:	1162	PPCODE:
855	{	1163	{
856	aio_req req;	1164	aio_req req;
857	STRLEN svlen;	1165	STRLEN svlen;
858	char *svptr = SvPVbyte (data, svlen);	1166	char *svptr = SvPVbyte (data, svlen);
859		1167
…		…
897	{	1205	{
898	SvREADONLY_on (data);	1206	SvREADONLY_on (data);
899	req->data2ptr = (void *)data;	1207	req->data2ptr = (void *)data;
900	}	1208	}
901		1209
902	send_req (req);	1210	REQ_SEND;
903	}	1211	}
904	}	1212	}
905		1213
906	void	1214	void
907	aio_sendfile(out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1215	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)
908	SV * out_fh	1216	SV * out_fh
909	SV * in_fh	1217	SV * in_fh
910	UV in_offset	1218	UV in_offset
911	UV length	1219	UV length
912	SV * callback	1220	SV * callback
913	PROTOTYPE: $$$$;$	1221	PROTOTYPE: $$$$;$
914	CODE:	1222	PPCODE:
915	{	1223	{
916	dREQ;	1224	dREQ;
917		1225
918	req->type = REQ_SENDFILE;	1226	req->type = REQ_SENDFILE;
919	req->fh = newSVsv (out_fh);	1227	req->fh = newSVsv (out_fh);
…		…
921	req->fh2 = newSVsv (in_fh);	1229	req->fh2 = newSVsv (in_fh);
922	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1230	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
923	req->offset = in_offset;	1231	req->offset = in_offset;
924	req->length = length;	1232	req->length = length;
925		1233
926	send_req (req);	1234	REQ_SEND;
927	}	1235	}
928		1236
929	void	1237	void
930	aio_readahead(fh,offset,length,callback=&PL_sv_undef)	1238	aio_readahead (fh,offset,length,callback=&PL_sv_undef)
931	SV * fh	1239	SV * fh
932	UV offset	1240	UV offset
933	IV length	1241	IV length
934	SV * callback	1242	SV * callback
935	PROTOTYPE: $$$;$	1243	PROTOTYPE: $$$;$
936	CODE:	1244	PPCODE:
937	{	1245	{
938	dREQ;	1246	dREQ;
939		1247
940	req->type = REQ_READAHEAD;	1248	req->type = REQ_READAHEAD;
941	req->fh = newSVsv (fh);	1249	req->fh = newSVsv (fh);
942	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1250	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
943	req->offset = offset;	1251	req->offset = offset;
944	req->length = length;	1252	req->length = length;
945		1253
946	send_req (req);	1254	REQ_SEND;
947	}	1255	}
948		1256
949	void	1257	void
950	aio_stat(fh_or_path,callback=&PL_sv_undef)	1258	aio_stat (fh_or_path,callback=&PL_sv_undef)
951	SV * fh_or_path	1259	SV * fh_or_path
952	SV * callback	1260	SV * callback
953	ALIAS:	1261	ALIAS:
954	aio_stat = REQ_STAT	1262	aio_stat = REQ_STAT
955	aio_lstat = REQ_LSTAT	1263	aio_lstat = REQ_LSTAT
956	CODE:	1264	PPCODE:
957	{	1265	{
958	dREQ;	1266	dREQ;
959		1267
960	New (0, req->statdata, 1, Stat_t);	1268	New (0, req->statdata, 1, Stat_t);
961	if (!req->statdata)	1269	if (!req->statdata)
962	{	1270	{
963	free_req (req);	1271	req_free (req);
964	croak ("out of memory during aio_req->statdata allocation");	1272	croak ("out of memory during aio_req->statdata allocation");
965	}	1273	}
966		1274
967	if (SvPOK (fh_or_path))	1275	if (SvPOK (fh_or_path))
968	{	1276	{
…		…
975	req->type = REQ_FSTAT;	1283	req->type = REQ_FSTAT;
976	req->fh = newSVsv (fh_or_path);	1284	req->fh = newSVsv (fh_or_path);
977	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1285	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
978	}	1286	}
979		1287
980	send_req (req);	1288	REQ_SEND;
981	}	1289	}
982		1290
983	void	1291	void
984	aio_unlink(pathname,callback=&PL_sv_undef)	1292	aio_unlink (pathname,callback=&PL_sv_undef)
985	SV * pathname	1293	SV * pathname
986	SV * callback	1294	SV * callback
987	ALIAS:	1295	ALIAS:
988	aio_unlink = REQ_UNLINK	1296	aio_unlink = REQ_UNLINK
989	aio_rmdir = REQ_RMDIR	1297	aio_rmdir = REQ_RMDIR
		1298	aio_readdir = REQ_READDIR
990	CODE:	1299	PPCODE:
991	{	1300	{
992	dREQ;	1301	dREQ;
993		1302
994	req->type = ix;	1303	req->type = ix;
995	req->data = newSVsv (pathname);	1304	req->data = newSVsv (pathname);
996	req->dataptr = SvPVbyte_nolen (req->data);	1305	req->dataptr = SvPVbyte_nolen (req->data);
997		1306
998	send_req (req);	1307	REQ_SEND;
999	}	1308	}
1000		1309
1001	void	1310	void
1002	aio_symlink(oldpath,newpath,callback=&PL_sv_undef)	1311	aio_link (oldpath,newpath,callback=&PL_sv_undef)
1003	SV * oldpath	1312	SV * oldpath
1004	SV * newpath	1313	SV * newpath
1005	SV * callback	1314	SV * callback
		1315	ALIAS:
		1316	aio_link = REQ_LINK
		1317	aio_symlink = REQ_SYMLINK
		1318	aio_rename = REQ_RENAME
1006	CODE:	1319	PPCODE:
1007	{	1320	{
1008	dREQ;	1321	dREQ;
1009		1322
1010	req->type = REQ_SYMLINK;	1323	req->type = ix;
1011	req->fh = newSVsv (oldpath);	1324	req->fh = newSVsv (oldpath);
1012	req->data2ptr = SvPVbyte_nolen (req->fh);	1325	req->data2ptr = SvPVbyte_nolen (req->fh);
1013	req->data = newSVsv (newpath);	1326	req->data = newSVsv (newpath);
1014	req->dataptr = SvPVbyte_nolen (req->data);	1327	req->dataptr = SvPVbyte_nolen (req->data);
1015		1328
1016	send_req (req);	1329	REQ_SEND;
1017	}	1330	}
1018		1331
1019	void	1332	void
1020	aio_readdir(pathname,callback=&PL_sv_undef)	1333	aio_busy (delay,callback=&PL_sv_undef)
1021	SV * pathname	1334	double delay
1022	SV * callback	1335	SV * callback
1023	CODE:	1336	PPCODE:
1024	{	1337	{
1025	dREQ;	1338	dREQ;
1026		1339
		1340	req->type = REQ_BUSY;
		1341	req->fd = delay < 0. ? 0 : delay;
		1342	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
		1343
		1344	REQ_SEND;
		1345	}
		1346
		1347	void
		1348	aio_group (callback=&PL_sv_undef)
		1349	SV * callback
		1350	PROTOTYPE: ;$
		1351	PPCODE:
		1352	{
		1353	dREQ;
		1354
1027	req->type = REQ_READDIR;	1355	req->type = REQ_GROUP;
1028	req->data = newSVsv (pathname);	1356	req_send (req);
1029	req->dataptr = SvPVbyte_nolen (req->data);
1030
1031	send_req (req);
1032	}
1033		1357
		1358	XPUSHs (req_sv (req, AIO_GRP_KLASS));
		1359	}
		1360
1034	void	1361	void
		1362	aio_nop (callback=&PL_sv_undef)
		1363	SV * callback
		1364	PPCODE:
		1365	{
		1366	dREQ;
		1367
		1368	req->type = REQ_NOP;
		1369
		1370	REQ_SEND;
		1371	}
		1372
		1373	void
		1374	aioreq_pri (int pri = DEFAULT_PRI)
		1375	CODE:
		1376	if (pri < PRI_MIN) pri = PRI_MIN;
		1377	if (pri > PRI_MAX) pri = PRI_MAX;
		1378	next_pri = pri + PRI_BIAS;
		1379
		1380	void
		1381	aioreq_nice (int nice = 0)
		1382	CODE:
		1383	nice = next_pri - nice;
		1384	if (nice < PRI_MIN) nice = PRI_MIN;
		1385	if (nice > PRI_MAX) nice = PRI_MAX;
		1386	next_pri = nice + PRI_BIAS;
		1387
		1388	void
1035	flush()	1389	flush ()
1036	PROTOTYPE:	1390	PROTOTYPE:
1037	CODE:	1391	CODE:
1038	while (nreqs)	1392	while (nreqs)
1039	{	1393	{
1040	poll_wait ();	1394	poll_wait ();
…		…
1080	CODE:	1434	CODE:
1081	RETVAL = nreqs;	1435	RETVAL = nreqs;
1082	OUTPUT:	1436	OUTPUT:
1083	RETVAL	1437	RETVAL
1084		1438
		1439	PROTOTYPES: DISABLE
		1440
		1441	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
		1442
		1443	void
		1444	cancel (aio_req_ornot req)
		1445	CODE:
		1446	req_cancel (req);
		1447
		1448	void
		1449	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
		1450	CODE:
		1451	SvREFCNT_dec (req->callback);
		1452	req->callback = newSVsv (callback);
		1453
		1454	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
		1455
		1456	void
		1457	add (aio_req grp, ...)
		1458	PPCODE:
		1459	{
		1460	int i;
		1461	aio_req req;
		1462
		1463	if (grp->fd == 2)
		1464	croak ("cannot add requests to IO::AIO::GRP after the group finished");
		1465
		1466	for (i = 1; i < items; ++i )
		1467	{
		1468	if (GIMME_V != G_VOID)
		1469	XPUSHs (sv_2mortal (newSVsv (ST (i))));
		1470
		1471	req = SvAIO_REQ (ST (i));
		1472
		1473	if (req)
		1474	{
		1475	++grp->length;
		1476	req->grp = grp;
		1477
		1478	req->grp_prev = 0;
		1479	req->grp_next = grp->grp_first;
		1480
		1481	if (grp->grp_first)
		1482	grp->grp_first->grp_prev = req;
		1483
		1484	grp->grp_first = req;
		1485	}
		1486	}
		1487	}
		1488
		1489	void
		1490	cancel_subs (aio_req_ornot req)
		1491	CODE:
		1492	req_cancel_subs (req);
		1493
		1494	void
		1495	result (aio_req grp, ...)
		1496	CODE:
		1497	{
		1498	int i;
		1499	AV *av = newAV ();
		1500
		1501	for (i = 1; i < items; ++i )
		1502	av_push (av, newSVsv (ST (i)));
		1503
		1504	SvREFCNT_dec (grp->data);
		1505	grp->data = (SV *)av;
		1506	}
		1507
		1508	void
		1509	limit (aio_req grp, int limit)
		1510	CODE:
		1511	grp->fd2 = limit;
		1512	aio_grp_feed (grp);
		1513
		1514	void
		1515	feed (aio_req grp, SV *callback=&PL_sv_undef)
		1516	CODE:
		1517	{
		1518	SvREFCNT_dec (grp->fh2);
		1519	grp->fh2 = newSVsv (callback);
		1520
		1521	if (grp->fd2 <= 0)
		1522	grp->fd2 = 2;
		1523
		1524	aio_grp_feed (grp);
		1525	}
		1526

Diff Legend

–	Removed lines
+	Added lines
<	Changed lines
>	Changed lines