ViewVC Help

View File | Revision Log | Show Annotations | Download File

/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.39 by root, Mon Feb 6 23:54:12 2006 UTC vs.
Revision 1.71 by root, Tue Oct 24 16:35:04 2006 UTC

		1	/* solaris */
		2	#define _POSIX_PTHREAD_SEMANTICS 1
		3
		4	#if __linux
		5	# define _GNU_SOURCE
		6	#endif
		7
1	#define _REENTRANT 1	8	#define _REENTRANT 1
		9
2	#include <errno.h>	10	#include <errno.h>
3		11
4	#include "EXTERN.h"	12	#include "EXTERN.h"
5	#include "perl.h"	13	#include "perl.h"
6	#include "XSUB.h"	14	#include "XSUB.h"
…		…
8	#include "autoconf/config.h"	16	#include "autoconf/config.h"
9		17
10	#include <pthread.h>	18	#include <pthread.h>
11		19
12	#include <stddef.h>	20	#include <stddef.h>
		21	#include <errno.h>
		22	#include <sys/time.h>
		23	#include <sys/select.h>
13	#include <sys/types.h>	24	#include <sys/types.h>
14	#include <sys/stat.h>	25	#include <sys/stat.h>
15	#include <limits.h>	26	#include <limits.h>
16	#include <unistd.h>	27	#include <unistd.h>
17	#include <fcntl.h>	28	#include <fcntl.h>
…		…
38	# define NAME_MAX 4096	49	# define NAME_MAX 4096
39	#endif	50	#endif
40		51
41	#if __ia64	52	#if __ia64
42	# define STACKSIZE 65536	53	# define STACKSIZE 65536
		54	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
		55	# define STACKSIZE PTHREAD_STACK_MIN
43	#else	56	#else
44	# define STACKSIZE 8192	57	# define STACKSIZE 16384
45	#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;
46		70
47	enum {	71	enum {
48	REQ_QUIT,	72	REQ_QUIT,
49	REQ_OPEN, REQ_CLOSE,	73	REQ_OPEN, REQ_CLOSE,
50	REQ_READ, REQ_WRITE, REQ_READAHEAD,	74	REQ_READ, REQ_WRITE, REQ_READAHEAD,
51	REQ_SENDFILE,	75	REQ_SENDFILE,
52	REQ_STAT, REQ_LSTAT, REQ_FSTAT,	76	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
53	REQ_FSYNC, REQ_FDATASYNC,	77	REQ_FSYNC, REQ_FDATASYNC,
54	REQ_UNLINK, REQ_RMDIR,	78	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
55	REQ_READDIR,	79	REQ_READDIR,
56	REQ_SYMLINK,	80	REQ_LINK, REQ_SYMLINK,
		81	REQ_GROUP, REQ_NOP,
		82	REQ_BUSY,
57	};	83	};
58		84
		85	#define AIO_REQ_KLASS "IO::AIO::REQ"
		86	#define AIO_GRP_KLASS "IO::AIO::GRP"
		87
59	typedef struct aio_cb {	88	typedef struct aio_cb
		89	{
60	struct aio_cb *volatile next;	90	struct aio_cb *volatile next;
61		91
62	int type;	92	SV *data, *callback;
63		93	SV *fh, *fh2;
64	/* should receive a cleanup, with unions */	94	void *dataptr, *data2ptr;
65	int fd, fd2;	95	Stat_t *statdata;
66	off_t offset;	96	off_t offset;
67	size_t length;	97	size_t length;
68	ssize_t result;	98	ssize_t result;
		99
		100	STRLEN dataoffset;
		101	int type;
		102	int fd, fd2;
		103	int errorno;
69	mode_t mode; /* open */	104	mode_t mode; /* open */
70	int errorno;
71	SV *data, *callback;
72	SV *fh, *fh2;
73	void *dataptr, *data2ptr;
74	STRLEN dataoffset;
75		105
76	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;
77	} aio_cb;	111	} aio_cb;
78		112
		113	enum {
		114	FLAG_CANCELLED = 0x01,
		115	};
		116
79	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;
80		130
81	static int started, wanted;	131	static int started, wanted;
82	static volatile int nreqs;	132	static volatile int nreqs;
83	static int max_outstanding = 1<<30;	133	static int max_outstanding = 1<<30;
84	static int respipe [2];	134	static int respipe [2];
85		135
		136	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
		137	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
		138	#else
		139	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
		140	#endif
		141
		142	#define LOCK(mutex) pthread_mutex_lock (&(mutex))
		143	#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
		144
		145	/* worker threasd management */
		146	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
		147
		148	typedef struct worker {
		149	/* locked by wrklock */
		150	struct worker *prev, *next;
		151
		152	pthread_t tid;
		153
		154	/* locked by reslock, reqlock or wrklock */
		155	aio_req req; /* currently processed request */
		156	void *dbuf;
		157	DIR *dirp;
		158	} worker;
		159
		160	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
		161
		162	static void worker_clear (worker *wrk)
		163	{
		164	if (wrk->dirp)
		165	{
		166	closedir (wrk->dirp);
		167	wrk->dirp = 0;
		168	}
		169
		170	if (wrk->dbuf)
		171	{
		172	free (wrk->dbuf);
		173	wrk->dbuf = 0;
		174	}
		175	}
		176
		177	static void worker_free (worker *wrk)
		178	{
		179	wrk->next->prev = wrk->prev;
		180	wrk->prev->next = wrk->next;
		181
		182	free (wrk);
		183	}
		184
86	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	185	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
87	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;	186	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
88	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	187	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
89		188
90	static volatile aio_req reqs, reqe; /* queue start, queue end */	189	/*
91	static volatile aio_req ress, rese; /* queue start, queue end */	190	* a somewhat faster data structure might be nice, but
		191	* with 8 priorities this actually needs <20 insns
		192	* per shift, the most expensive operation.
		193	*/
		194	typedef struct {
		195	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
		196	int size;
		197	} reqq;
92		198
		199	static reqq req_queue;
		200	static reqq res_queue;
		201
		202	int reqq_push (reqq *q, aio_req req)
		203	{
		204	int pri = req->pri;
		205	req->next = 0;
		206
		207	if (q->qe[pri])
		208	{
		209	q->qe[pri]->next = req;
		210	q->qe[pri] = req;
		211	}
		212	else
		213	q->qe[pri] = q->qs[pri] = req;
		214
		215	return q->size++;
		216	}
		217
		218	aio_req reqq_shift (reqq *q)
		219	{
		220	int pri;
		221
		222	if (!q->size)
		223	return 0;
		224
		225	--q->size;
		226
		227	for (pri = NUM_PRI; pri--; )
		228	{
		229	aio_req req = q->qs[pri];
		230
		231	if (req)
		232	{
		233	if (!(q->qs[pri] = req->next))
		234	q->qe[pri] = 0;
		235
		236	return req;
		237	}
		238	}
		239
		240	abort ();
		241	}
		242
		243	static void req_invoke (aio_req req);
93	static void free_req (aio_req req)	244	static void req_free (aio_req req);
94	{
95	if (req->data)
96	SvREFCNT_dec (req->data);
97		245
		246	/* must be called at most once */
		247	static SV *req_sv (aio_req req, const char *klass)
		248	{
98	if (req->fh)	249	if (!req->self)
99	SvREFCNT_dec (req->fh);	250	{
		251	req->self = (SV *)newHV ();
		252	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
		253	}
100		254
101	if (req->fh2)	255	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));
		256	}
		257
		258	static aio_req SvAIO_REQ (SV *sv)
		259	{
		260	MAGIC *mg;
		261
		262	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))
		263	croak ("object of class " AIO_REQ_KLASS " expected");
		264
		265	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
		266
		267	return mg ? (aio_req)mg->mg_ptr : 0;
		268	}
		269
		270	static void aio_grp_feed (aio_req grp)
		271	{
		272	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))
		273	{
		274	int old_len = grp->length;
		275
		276	if (grp->fh2 && SvOK (grp->fh2))
		277	{
		278	dSP;
		279
		280	ENTER;
		281	SAVETMPS;
		282	PUSHMARK (SP);
		283	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
		284	PUTBACK;
		285	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);
		286	SPAGAIN;
		287	FREETMPS;
		288	LEAVE;
		289	}
		290
		291	/* stop if no progress has been made */
		292	if (old_len == grp->length)
		293	{
102	SvREFCNT_dec (req->fh2);	294	SvREFCNT_dec (grp->fh2);
103		295	grp->fh2 = 0;
104	if (req->statdata)	296	break;
105	Safefree (req->statdata);	297	}
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	{	298	}
		299	}
		300
		301	static void aio_grp_dec (aio_req grp)
		302	{
		303	--grp->length;
		304
		305	/* call feeder, if applicable */
		306	aio_grp_feed (grp);
		307
		308	/* finish, if done */
		309	if (!grp->length && grp->fd)
		310	{
		311	req_invoke (grp);
		312	req_free (grp);
		313	}
		314	}
		315
		316	static void poll_wait ()
		317	{
121	fd_set rfd;	318	fd_set rfd;
		319
		320	while (nreqs)
		321	{
		322	int size;
		323	#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
		324	LOCK (reslock);
		325	#endif
		326	size = res_queue.size;
		327	#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
		328	UNLOCK (reslock);
		329	#endif
		330
		331	if (size)
		332	return;
		333
122	FD_ZERO(&rfd);	334	FD_ZERO(&rfd);
123	FD_SET(respipe [0], &rfd);	335	FD_SET(respipe [0], &rfd);
124		336
125	select (respipe [0] + 1, &rfd, 0, 0, 0);	337	select (respipe [0] + 1, &rfd, 0, 0, 0);
126	}	338	}
127	}	339	}
128		340
129	static int	341	static void req_invoke (aio_req req)
130	poll_cb ()	342	{
		343	dSP;
		344
		345	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
		346	{
		347	errno = req->errorno;
		348
		349	ENTER;
		350	SAVETMPS;
		351	PUSHMARK (SP);
		352	EXTEND (SP, 1);
		353
		354	switch (req->type)
		355	{
		356	case REQ_READDIR:
		357	{
		358	SV *rv = &PL_sv_undef;
		359
		360	if (req->result >= 0)
		361	{
		362	int i;
		363	char *buf = req->data2ptr;
		364	AV *av = newAV ();
		365
		366	av_extend (av, req->result - 1);
		367
		368	for (i = 0; i < req->result; ++i)
		369	{
		370	SV *sv = newSVpv (buf, 0);
		371
		372	av_store (av, i, sv);
		373	buf += SvCUR (sv) + 1;
		374	}
		375
		376	rv = sv_2mortal (newRV_noinc ((SV *)av));
		377	}
		378
		379	PUSHs (rv);
		380	}
		381	break;
		382
		383	case REQ_OPEN:
		384	{
		385	/* convert fd to fh */
		386	SV *fh;
		387
		388	PUSHs (sv_2mortal (newSViv (req->result)));
		389	PUTBACK;
		390	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
		391	SPAGAIN;
		392
		393	fh = SvREFCNT_inc (POPs);
		394
		395	PUSHMARK (SP);
		396	XPUSHs (sv_2mortal (fh));
		397	}
		398	break;
		399
		400	case REQ_GROUP:
		401	req->fd = 2; /* mark group as finished */
		402
		403	if (req->data)
		404	{
		405	int i;
		406	AV *av = (AV *)req->data;
		407
		408	EXTEND (SP, AvFILL (av) + 1);
		409	for (i = 0; i <= AvFILL (av); ++i)
		410	PUSHs (*av_fetch (av, i, 0));
		411	}
		412	break;
		413
		414	case REQ_NOP:
		415	case REQ_BUSY:
		416	break;
		417
		418	default:
		419	PUSHs (sv_2mortal (newSViv (req->result)));
		420	break;
		421	}
		422
		423
		424	PUTBACK;
		425	call_sv (req->callback, G_VOID | G_EVAL);
		426	SPAGAIN;
		427
		428	FREETMPS;
		429	LEAVE;
		430	}
		431
		432	if (req->grp)
		433	{
		434	aio_req grp = req->grp;
		435
		436	/* unlink request */
		437	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
		438	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
		439
		440	if (grp->grp_first == req)
		441	grp->grp_first = req->grp_next;
		442
		443	aio_grp_dec (grp);
		444	}
		445
		446	if (SvTRUE (ERRSV))
		447	{
		448	req_free (req);
		449	croak (0);
		450	}
		451	}
		452
		453	static void req_free (aio_req req)
		454	{
		455	if (req->self)
		456	{
		457	sv_unmagic (req->self, PERL_MAGIC_ext);
		458	SvREFCNT_dec (req->self);
		459	}
		460
		461	SvREFCNT_dec (req->data);
		462	SvREFCNT_dec (req->fh);
		463	SvREFCNT_dec (req->fh2);
		464	SvREFCNT_dec (req->callback);
		465	Safefree (req->statdata);
		466
		467	if (req->type == REQ_READDIR)
		468	free (req->data2ptr);
		469
		470	Safefree (req);
		471	}
		472
		473	static void req_cancel (aio_req req)
		474	{
		475	req->flags |= FLAG_CANCELLED;
		476
		477	if (req->type == REQ_GROUP)
		478	{
		479	aio_req sub;
		480
		481	for (sub = req->grp_first; sub; sub = sub->grp_next)
		482	req_cancel (sub);
		483	}
		484	}
		485
		486	static int poll_cb ()
131	{	487	{
132	dSP;	488	dSP;
133	int count = 0;	489	int count = 0;
134	int do_croak = 0;	490	int do_croak = 0;
135	aio_req req;	491	aio_req req;
136		492
137	for (;;)	493	for (;;)
138	{	494	{
139	pthread_mutex_lock (&reslock);	495	LOCK (reslock);
140	req = ress;	496	req = reqq_shift (&res_queue);
141		497
142	if (req)	498	if (req)
143	{	499	{
144	ress = req->next;
145
146	if (!ress)	500	if (!res_queue.size)
147	{	501	{
148	/* read any signals sent by the worker threads */	502	/* read any signals sent by the worker threads */
149	char buf [32];	503	char buf [32];
150	while (read (respipe [0], buf, 32) == 32)	504	while (read (respipe [0], buf, 32) == 32)
151	;	505	;
152
153	rese = 0;
154	}	506	}
155	}	507	}
156		508
157	pthread_mutex_unlock (&reslock);	509	UNLOCK (reslock);
158		510
159	if (!req)	511	if (!req)
160	break;	512	break;
161		513
162	nreqs--;	514	--nreqs;
163		515
164	if (req->type == REQ_QUIT)	516	if (req->type == REQ_QUIT)
165	started--;	517	started--;
		518	else if (req->type == REQ_GROUP && req->length)
		519	{
		520	req->fd = 1; /* mark request as delayed */
		521	continue;
		522	}
166	else	523	else
167	{	524	{
168	int errorno = errno;
169	errno = req->errorno;
170
171	if (req->type == REQ_READ)	525	if (req->type == REQ_READ)
172	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));	526	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
173		527
174	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))	528	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
175	SvREADONLY_off (req->data);	529	SvREADONLY_off (req->data);
…		…
179	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	533	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
180	PL_laststatval = req->result;	534	PL_laststatval = req->result;
181	PL_statcache = *(req->statdata);	535	PL_statcache = *(req->statdata);
182	}	536	}
183		537
184	ENTER;	538	req_invoke (req);
185	PUSHMARK (SP);
186		539
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	}
210	else
211	{
212	XPUSHs (sv_2mortal (newSViv (req->result)));
213
214	if (req->type == REQ_OPEN)
215	{
216	/* convert fd to fh */
217	SV *fh;
218
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	}
228	}
229
230	if (SvOK (req->callback))
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++;	540	count++;
247	}	541	}
248		542
249	free_req (req);	543	req_free (req);
250	}	544	}
251		545
252	return count;	546	return count;
253	}	547	}
254		548
255	static void *aio_proc(void *arg);	549	static void *aio_proc(void *arg);
256		550
257	static void
258	start_thread (void)	551	static void start_thread (void)
259	{	552	{
		553	worker *wrk = calloc (1, sizeof (worker));
		554
		555	if (!wrk)
		556	croak ("unable to allocate worker thread data");
		557
260	sigset_t fullsigset, oldsigset;	558	sigset_t fullsigset, oldsigset;
261	pthread_t tid;
262	pthread_attr_t attr;	559	pthread_attr_t attr;
263		560
264	pthread_attr_init (&attr);	561	pthread_attr_init (&attr);
265	pthread_attr_setstacksize (&attr, STACKSIZE);	562	pthread_attr_setstacksize (&attr, STACKSIZE);
266	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);	563	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
267		564
268	sigfillset (&fullsigset);	565	sigfillset (&fullsigset);
		566
		567	LOCK (wrklock);
269	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);	568	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
270		569
271	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)	570	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
		571	{
		572	wrk->prev = &wrk_first;
		573	wrk->next = wrk_first.next;
		574	wrk_first.next->prev = wrk;
		575	wrk_first.next = wrk;
272	started++;	576	started++;
		577	}
		578	else
		579	free (wrk);
273		580
274	sigprocmask (SIG_SETMASK, &oldsigset, 0);	581	sigprocmask (SIG_SETMASK, &oldsigset, 0);
		582	UNLOCK (wrklock);
275	}	583	}
276		584
277	static void	585	static void req_send (aio_req req)
278	send_req (aio_req req)
279	{	586	{
280	while (started < wanted && nreqs >= started)	587	while (started < wanted && nreqs >= started)
281	start_thread ();	588	start_thread ();
282		589
283	nreqs++;	590	++nreqs;
284		591
285	pthread_mutex_lock (&reqlock);	592	LOCK (reqlock);
286		593	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);	594	pthread_cond_signal (&reqwait);
298	pthread_mutex_unlock (&reqlock);	595	UNLOCK (reqlock);
299		596
300	if (nreqs > max_outstanding)	597	if (nreqs > max_outstanding)
301	for (;;)	598	for (;;)
302	{	599	{
303	poll_cb ();	600	poll_cb ();
…		…
307		604
308	poll_wait ();	605	poll_wait ();
309	}	606	}
310	}	607	}
311		608
312	static void	609	static void end_thread (void)
313	end_thread (void)
314	{	610	{
315	aio_req req;	611	aio_req req;
		612
316	Newz (0, req, 1, aio_cb);	613	Newz (0, req, 1, aio_cb);
		614
317	req->type = REQ_QUIT;	615	req->type = REQ_QUIT;
		616	req->pri = PRI_MAX + PRI_BIAS;
318		617
319	send_req (req);	618	req_send (req);
320	}	619	}
321		620
322	static void min_parallel (int nthreads)	621	static void min_parallel (int nthreads)
323	{	622	{
324	if (wanted < nthreads)	623	if (wanted < nthreads)
…		…
369	* normal read/write by using a mutex. slows down execution a lot,	668	* normal read/write by using a mutex. slows down execution a lot,
370	* but that's your problem, not mine.	669	* but that's your problem, not mine.
371	*/	670	*/
372	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;	671	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
373		672
374	static ssize_t	673	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	{	674	{
377	ssize_t res;	675	ssize_t res;
378	off_t ooffset;	676	off_t ooffset;
379		677
380	pthread_mutex_lock (&preadwritelock);	678	LOCK (preadwritelock);
381	ooffset = lseek (fd, 0, SEEK_CUR);	679	ooffset = lseek (fd, 0, SEEK_CUR);
382	lseek (fd, offset, SEEK_SET);	680	lseek (fd, offset, SEEK_SET);
383	res = read (fd, buf, count);	681	res = read (fd, buf, count);
384	lseek (fd, ooffset, SEEK_SET);	682	lseek (fd, ooffset, SEEK_SET);
385	pthread_mutex_unlock (&preadwritelock);	683	UNLOCK (preadwritelock);
386		684
387	return res;	685	return res;
388	}	686	}
389		687
390	static ssize_t
391	pwrite (int fd, void *buf, size_t count, off_t offset)	688	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
392	{	689	{
393	ssize_t res;	690	ssize_t res;
394	off_t ooffset;	691	off_t ooffset;
395		692
396	pthread_mutex_lock (&preadwritelock);	693	LOCK (preadwritelock);
397	ooffset = lseek (fd, 0, SEEK_CUR);	694	ooffset = lseek (fd, 0, SEEK_CUR);
398	lseek (fd, offset, SEEK_SET);	695	lseek (fd, offset, SEEK_SET);
399	res = write (fd, buf, count);	696	res = write (fd, buf, count);
400	lseek (fd, offset, SEEK_SET);	697	lseek (fd, offset, SEEK_SET);
401	pthread_mutex_unlock (&preadwritelock);	698	UNLOCK (preadwritelock);
402		699
403	return res;	700	return res;
404	}	701	}
405	#endif	702	#endif
406		703
…		…
409	#endif	706	#endif
410		707
411	#if !HAVE_READAHEAD	708	#if !HAVE_READAHEAD
412	# define readahead aio_readahead	709	# define readahead aio_readahead
413		710
414	static ssize_t
415	readahead (int fd, off_t offset, size_t count)	711	static ssize_t readahead (int fd, off_t offset, size_t count)
416	{	712	{
417	char readahead_buf[4096];	713	dBUF;
418		714
419	while (count > 0)	715	while (count > 0)
420	{	716	{
421	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);	717	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
422		718
423	pread (fd, readahead_buf, len, offset);	719	pread (fd, aio_buf, len, offset);
424	offset += len;	720	offset += len;
425	count -= len;	721	count -= len;
426	}	722	}
427		723
428	errno = 0;	724	errno = 0;
…		…
432	#if !HAVE_READDIR_R	728	#if !HAVE_READDIR_R
433	# define readdir_r aio_readdir_r	729	# define readdir_r aio_readdir_r
434		730
435	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;	731	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
436		732
437	static int
438	readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)	733	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
439	{	734	{
440	struct dirent *e;	735	struct dirent *e;
441	int errorno;	736	int errorno;
442		737
443	pthread_mutex_lock (&readdirlock);	738	LOCK (readdirlock);
444		739
445	e = readdir (dirp);	740	e = readdir (dirp);
446	errorno = errno;	741	errorno = errno;
447		742
448	if (e)	743	if (e)
…		…
451	strcpy (ent->d_name, e->d_name);	746	strcpy (ent->d_name, e->d_name);
452	}	747	}
453	else	748	else
454	*res = 0;	749	*res = 0;
455		750
456	pthread_mutex_unlock (&readdirlock);	751	UNLOCK (readdirlock);
457		752
458	errno = errorno;	753	errno = errorno;
459	return e ? 0 : -1;	754	return e ? 0 : -1;
460	}	755	}
461	#endif	756	#endif
462		757
463	/* sendfile always needs emulation */	758	/* sendfile always needs emulation */
464	static ssize_t
465	sendfile_ (int ofd, int ifd, off_t offset, size_t count)	759	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
466	{	760	{
467	ssize_t res;	761	ssize_t res;
468		762
469	if (!count)	763	if (!count)
470	return 0;	764	return 0;
…		…
519	#endif	813	#endif
520	)	814	)
521	)	815	)
522	{	816	{
523	/* emulate sendfile. this is a major pain in the ass */	817	/* emulate sendfile. this is a major pain in the ass */
524	char buf[4096];	818	dBUF;
		819
525	res = 0;	820	res = 0;
526		821
527	while (count)	822	while (count)
528	{	823	{
529	ssize_t cnt;	824	ssize_t cnt;
530		825
531	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);	826	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
532		827
533	if (cnt <= 0)	828	if (cnt <= 0)
534	{	829	{
535	if (cnt && !res) res = -1;	830	if (cnt && !res) res = -1;
536	break;	831	break;
537	}	832	}
538		833
539	cnt = write (ofd, buf, cnt);	834	cnt = write (ofd, aio_buf, cnt);
540		835
541	if (cnt <= 0)	836	if (cnt <= 0)
542	{	837	{
543	if (cnt && !res) res = -1;	838	if (cnt && !res) res = -1;
544	break;	839	break;
…		…
552		847
553	return res;	848	return res;
554	}	849	}
555		850
556	/* read a full directory */	851	/* read a full directory */
557	static int	852	static void scandir_ (aio_req req, worker *self)
558	scandir_ (const char *path, void **namesp)
559	{	853	{
560	DIR *dirp = opendir (path);	854	DIR *dirp;
561	union	855	union
562	{	856	{
563	struct dirent d;	857	struct dirent d;
564	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];	858	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
565	} u;	859	} *u;
566	struct dirent *entp;	860	struct dirent *entp;
567	char *name, *names;	861	char *name, *names;
568	int memlen = 4096;	862	int memlen = 4096;
569	int memofs = 0;	863	int memofs = 0;
570	int res = 0;	864	int res = 0;
571	int errorno;	865	int errorno;
572		866
573	if (!dirp)	867	LOCK (wrklock);
574	return -1;	868	self->dirp = dirp = opendir (req->dataptr);
		869	self->dbuf = u = malloc (sizeof (*u));
		870	UNLOCK (wrklock);
575		871
576	names = malloc (memlen);	872	req->data2ptr = names = malloc (memlen);
577		873
		874	if (dirp && u && names)
578	for (;;)	875	for (;;)
579	{	876	{
		877	errno = 0;
580	errno = 0, readdir_r (dirp, &u.d, &entp);	878	readdir_r (dirp, &u->d, &entp);
581		879
582	if (!entp)	880	if (!entp)
583	break;	881	break;
584		882
585	name = entp->d_name;	883	name = entp->d_name;
586		884
587	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))	885	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
588	{	886	{
589	int len = strlen (name) + 1;	887	int len = strlen (name) + 1;
590		888
591	res++;	889	res++;
592		890
593	while (memofs + len > memlen)	891	while (memofs + len > memlen)
594	{	892	{
595	memlen *= 2;	893	memlen *= 2;
		894	LOCK (wrklock);
596	names = realloc (names, memlen);	895	req->data2ptr = names = realloc (names, memlen);
		896	UNLOCK (wrklock);
		897
597	if (!names)	898	if (!names)
598	break;	899	break;
599	}	900	}
600		901
601	memcpy (names + memofs, name, len);	902	memcpy (names + memofs, name, len);
602	memofs += len;	903	memofs += len;
603	}	904	}
604	}	905	}
605		906
606	errorno = errno;
607	closedir (dirp);
608
609	if (errorno)	907	if (errno)
610	{
611	free (names);
612	errno = errorno;
613	res = -1;	908	res = -1;
614	}	909
615		910	req->result = res;
616	*namesp = (void *)names;
617	return res;
618	}	911	}
619		912
620	/*****************************************************************************/	913	/*****************************************************************************/
621		914
622	static void *
623	aio_proc (void *thr_arg)	915	static void *aio_proc (void *thr_arg)
624	{	916	{
625	aio_req req;	917	aio_req req;
626	int type;	918	int type;
		919	worker *self = (worker *)thr_arg;
627		920
628	do	921	do
629	{	922	{
630	pthread_mutex_lock (&reqlock);	923	LOCK (reqlock);
631		924
632	for (;;)	925	for (;;)
633	{	926	{
634	req = reqs;	927	self->req = req = reqq_shift (&req_queue);
635
636	if (reqs)
637	{
638	reqs = reqs->next;
639	if (!reqs) reqe = 0;
640	}
641		928
642	if (req)	929	if (req)
643	break;	930	break;
644		931
645	pthread_cond_wait (&reqwait, &reqlock);	932	pthread_cond_wait (&reqwait, &reqlock);
646	}	933	}
647		934
648	pthread_mutex_unlock (&reqlock);	935	UNLOCK (reqlock);
649		936
650	errno = 0; /* strictly unnecessary */	937	errno = 0; /* strictly unnecessary */
		938	type = req->type; /* remember type for QUIT check */
651		939
652	type = req->type;	940	if (!(req->flags & FLAG_CANCELLED))
653
654	switch (type)	941	switch (type)
655	{	942	{
656	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;	943	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
657	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;	944	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
658		945
659	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	946	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
660	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;	947	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length, self); break;
661		948
662	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	949	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
663	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	950	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
664	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	951	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
665		952
666	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;	953	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
667	case REQ_CLOSE: req->result = close (req->fd); break;	954	case REQ_CLOSE: req->result = close (req->fd); break;
668	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	955	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
669	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;	956	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
		957	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
		958	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
670	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;	959	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
671		960
672	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	961	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
673	case REQ_FSYNC: req->result = fsync (req->fd); break;	962	case REQ_FSYNC: req->result = fsync (req->fd); break;
674	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;	963	case REQ_READDIR: scandir_ (req, self); break;
675		964
		965	case REQ_BUSY:
		966	{
		967	struct timeval tv;
		968
		969	tv.tv_sec = req->fd;
		970	tv.tv_usec = req->fd2;
		971
		972	req->result = select (0, 0, 0, 0, &tv);
		973	}
		974
		975	case REQ_GROUP:
		976	case REQ_NOP:
676	case REQ_QUIT:	977	case REQ_QUIT:
677	break;	978	break;
678		979
679	default:	980	default:
680	req->result = ENOSYS;	981	req->result = ENOSYS;
681	break;	982	break;
682	}	983	}
683		984
684	req->errorno = errno;	985	req->errorno = errno;
685		986
686	pthread_mutex_lock (&reslock);	987	LOCK (reslock);
687		988
688	req->next = 0;	989	if (!reqq_push (&res_queue, req))
689
690	if (rese)
691	{
692	rese->next = req;
693	rese = req;
694	}
695	else
696	{
697	rese = ress = req;
698
699	/* write a dummy byte to the pipe so fh becomes ready */	990	/* write a dummy byte to the pipe so fh becomes ready */
700	write (respipe [1], &respipe, 1);	991	write (respipe [1], &respipe, 1);
701	}
702		992
703	pthread_mutex_unlock (&reslock);	993	self->req = 0;
		994	worker_clear (self);
		995
		996	UNLOCK (reslock);
704	}	997	}
705	while (type != REQ_QUIT);	998	while (type != REQ_QUIT);
706		999
		1000	LOCK (wrklock);
		1001	worker_free (self);
		1002	UNLOCK (wrklock);
		1003
707	return 0;	1004	return 0;
708	}	1005	}
709		1006
710	/*****************************************************************************/	1007	/*****************************************************************************/
711		1008
712	static void atfork_prepare (void)	1009	static void atfork_prepare (void)
713	{	1010	{
714	pthread_mutex_lock (&reqlock);	1011	LOCK (wrklock);
715	pthread_mutex_lock (&reslock);	1012	LOCK (reqlock);
		1013	LOCK (reslock);
716	#if !HAVE_PREADWRITE	1014	#if !HAVE_PREADWRITE
717	pthread_mutex_lock (&preadwritelock);	1015	LOCK (preadwritelock);
718	#endif	1016	#endif
719	#if !HAVE_READDIR_R	1017	#if !HAVE_READDIR_R
720	pthread_mutex_lock (&readdirlock);	1018	LOCK (readdirlock);
721	#endif	1019	#endif
722	}	1020	}
723		1021
724	static void atfork_parent (void)	1022	static void atfork_parent (void)
725	{	1023	{
726	#if !HAVE_READDIR_R	1024	#if !HAVE_READDIR_R
727	pthread_mutex_unlock (&readdirlock);	1025	UNLOCK (readdirlock);
728	#endif	1026	#endif
729	#if !HAVE_PREADWRITE	1027	#if !HAVE_PREADWRITE
730	pthread_mutex_unlock (&preadwritelock);	1028	UNLOCK (preadwritelock);
731	#endif	1029	#endif
732	pthread_mutex_unlock (&reslock);	1030	UNLOCK (reslock);
733	pthread_mutex_unlock (&reqlock);	1031	UNLOCK (reqlock);
		1032	UNLOCK (wrklock);
734	}	1033	}
735		1034
736	static void atfork_child (void)	1035	static void atfork_child (void)
737	{	1036	{
738	aio_req prv;	1037	aio_req prv;
739		1038
		1039	while (prv = reqq_shift (&req_queue))
		1040	req_free (prv);
		1041
		1042	while (prv = reqq_shift (&res_queue))
		1043	req_free (prv);
		1044
		1045	while (wrk_first.next != &wrk_first)
		1046	{
		1047	worker *wrk = wrk_first.next;
		1048
		1049	if (wrk->req)
		1050	req_free (wrk->req);
		1051
		1052	worker_clear (wrk);
		1053	worker_free (wrk);
		1054	}
		1055
740	started = 0;	1056	started = 0;
741		1057	nreqs = 0;
742	while (reqs)
743	{
744	prv = reqs;
745	reqs = prv->next;
746	free_req (prv);
747	}
748
749	reqs = reqe = 0;
750
751	while (ress)
752	{
753	prv = ress;
754	ress = prv->next;
755	free_req (prv);
756	}
757
758	ress = rese = 0;
759		1058
760	close (respipe [0]);	1059	close (respipe [0]);
761	close (respipe [1]);	1060	close (respipe [1]);
762	create_pipe ();	1061	create_pipe ();
763		1062
764	atfork_parent ();	1063	atfork_parent ();
765	}	1064	}
766		1065
767	#define dREQ \	1066	#define dREQ \
768	aio_req req; \	1067	aio_req req; \
		1068	int req_pri = next_pri; \
		1069	next_pri = DEFAULT_PRI + PRI_BIAS; \
769	\	1070	\
770	if (SvOK (callback) && !SvROK (callback)) \	1071	if (SvOK (callback) && !SvROK (callback)) \
771	croak ("clalback must be undef or of reference type"); \	1072	croak ("callback must be undef or of reference type"); \
772	\	1073	\
773	Newz (0, req, 1, aio_cb); \	1074	Newz (0, req, 1, aio_cb); \
774	if (!req) \	1075	if (!req) \
775	croak ("out of memory during aio_req allocation"); \	1076	croak ("out of memory during aio_req allocation"); \
776	\	1077	\
777	req->callback = newSVsv (callback);	1078	req->callback = newSVsv (callback); \
		1079	req->pri = req_pri
		1080
		1081	#define REQ_SEND \
		1082	req_send (req); \
		1083	\
		1084	if (GIMME_V != G_VOID) \
		1085	XPUSHs (req_sv (req, AIO_REQ_KLASS));
778		1086
779	MODULE = IO::AIO PACKAGE = IO::AIO	1087	MODULE = IO::AIO PACKAGE = IO::AIO
780		1088
781	PROTOTYPES: ENABLE	1089	PROTOTYPES: ENABLE
782		1090
783	BOOT:	1091	BOOT:
784	{	1092	{
		1093	HV *stash = gv_stashpv ("IO::AIO", 1);
		1094	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
		1095	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
		1096	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
		1097
785	create_pipe ();	1098	create_pipe ();
786	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	1099	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
787	}	1100	}
788		1101
789	void	1102	void
790	min_parallel(nthreads)	1103	min_parallel (nthreads)
791	int nthreads	1104	int nthreads
792	PROTOTYPE: $	1105	PROTOTYPE: $
793		1106
794	void	1107	void
795	max_parallel(nthreads)	1108	max_parallel (nthreads)
796	int nthreads	1109	int nthreads
797	PROTOTYPE: $	1110	PROTOTYPE: $
798		1111
799	int	1112	int
800	max_outstanding(nreqs)	1113	max_outstanding (nreqs)
801	int nreqs	1114	int nreqs
802	PROTOTYPE: $	1115	PROTOTYPE: $
803	CODE:	1116	CODE:
804	RETVAL = max_outstanding;	1117	RETVAL = max_outstanding;
805	max_outstanding = nreqs;	1118	max_outstanding = nreqs;
806		1119
807	void	1120	void
808	aio_open(pathname,flags,mode,callback=&PL_sv_undef)	1121	aio_open (pathname,flags,mode,callback=&PL_sv_undef)
809	SV * pathname	1122	SV * pathname
810	int flags	1123	int flags
811	int mode	1124	int mode
812	SV * callback	1125	SV * callback
813	PROTOTYPE: $$$;$	1126	PROTOTYPE: $$$;$
814	CODE:	1127	PPCODE:
815	{	1128	{
816	dREQ;	1129	dREQ;
817		1130
818	req->type = REQ_OPEN;	1131	req->type = REQ_OPEN;
819	req->data = newSVsv (pathname);	1132	req->data = newSVsv (pathname);
820	req->dataptr = SvPVbyte_nolen (req->data);	1133	req->dataptr = SvPVbyte_nolen (req->data);
821	req->fd = flags;	1134	req->fd = flags;
822	req->mode = mode;	1135	req->mode = mode;
823		1136
824	send_req (req);	1137	REQ_SEND;
825	}	1138	}
826		1139
827	void	1140	void
828	aio_close(fh,callback=&PL_sv_undef)	1141	aio_close (fh,callback=&PL_sv_undef)
829	SV * fh	1142	SV * fh
830	SV * callback	1143	SV * callback
831	PROTOTYPE: $;$	1144	PROTOTYPE: $;$
832	ALIAS:	1145	ALIAS:
833	aio_close = REQ_CLOSE	1146	aio_close = REQ_CLOSE
834	aio_fsync = REQ_FSYNC	1147	aio_fsync = REQ_FSYNC
835	aio_fdatasync = REQ_FDATASYNC	1148	aio_fdatasync = REQ_FDATASYNC
836	CODE:	1149	PPCODE:
837	{	1150	{
838	dREQ;	1151	dREQ;
839		1152
840	req->type = ix;	1153	req->type = ix;
841	req->fh = newSVsv (fh);	1154	req->fh = newSVsv (fh);
842	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1155	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
843		1156
844	send_req (req);	1157	REQ_SEND (req);
845	}	1158	}
846		1159
847	void	1160	void
848	aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1161	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
849	SV * fh	1162	SV * fh
850	UV offset	1163	UV offset
851	UV length	1164	UV length
852	SV * data	1165	SV * data
853	UV dataoffset	1166	UV dataoffset
854	SV * callback	1167	SV * callback
855	ALIAS:	1168	ALIAS:
856	aio_read = REQ_READ	1169	aio_read = REQ_READ
857	aio_write = REQ_WRITE	1170	aio_write = REQ_WRITE
858	PROTOTYPE: $$$$$;$	1171	PROTOTYPE: $$$$$;$
859	CODE:	1172	PPCODE:
860	{	1173	{
861	aio_req req;	1174	aio_req req;
862	STRLEN svlen;	1175	STRLEN svlen;
863	char *svptr = SvPVbyte (data, svlen);	1176	char *svptr = SvPVbyte (data, svlen);
864		1177
…		…
902	{	1215	{
903	SvREADONLY_on (data);	1216	SvREADONLY_on (data);
904	req->data2ptr = (void *)data;	1217	req->data2ptr = (void *)data;
905	}	1218	}
906		1219
907	send_req (req);	1220	REQ_SEND;
908	}	1221	}
909	}	1222	}
910		1223
911	void	1224	void
912	aio_sendfile(out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1225	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)
913	SV * out_fh	1226	SV * out_fh
914	SV * in_fh	1227	SV * in_fh
915	UV in_offset	1228	UV in_offset
916	UV length	1229	UV length
917	SV * callback	1230	SV * callback
918	PROTOTYPE: $$$$;$	1231	PROTOTYPE: $$$$;$
919	CODE:	1232	PPCODE:
920	{	1233	{
921	dREQ;	1234	dREQ;
922		1235
923	req->type = REQ_SENDFILE;	1236	req->type = REQ_SENDFILE;
924	req->fh = newSVsv (out_fh);	1237	req->fh = newSVsv (out_fh);
…		…
926	req->fh2 = newSVsv (in_fh);	1239	req->fh2 = newSVsv (in_fh);
927	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1240	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
928	req->offset = in_offset;	1241	req->offset = in_offset;
929	req->length = length;	1242	req->length = length;
930		1243
931	send_req (req);	1244	REQ_SEND;
932	}	1245	}
933		1246
934	void	1247	void
935	aio_readahead(fh,offset,length,callback=&PL_sv_undef)	1248	aio_readahead (fh,offset,length,callback=&PL_sv_undef)
936	SV * fh	1249	SV * fh
937	UV offset	1250	UV offset
938	IV length	1251	IV length
939	SV * callback	1252	SV * callback
940	PROTOTYPE: $$$;$	1253	PROTOTYPE: $$$;$
941	CODE:	1254	PPCODE:
942	{	1255	{
943	dREQ;	1256	dREQ;
944		1257
945	req->type = REQ_READAHEAD;	1258	req->type = REQ_READAHEAD;
946	req->fh = newSVsv (fh);	1259	req->fh = newSVsv (fh);
947	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1260	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
948	req->offset = offset;	1261	req->offset = offset;
949	req->length = length;	1262	req->length = length;
950		1263
951	send_req (req);	1264	REQ_SEND;
952	}	1265	}
953		1266
954	void	1267	void
955	aio_stat(fh_or_path,callback=&PL_sv_undef)	1268	aio_stat (fh_or_path,callback=&PL_sv_undef)
956	SV * fh_or_path	1269	SV * fh_or_path
957	SV * callback	1270	SV * callback
958	ALIAS:	1271	ALIAS:
959	aio_stat = REQ_STAT	1272	aio_stat = REQ_STAT
960	aio_lstat = REQ_LSTAT	1273	aio_lstat = REQ_LSTAT
961	CODE:	1274	PPCODE:
962	{	1275	{
963	dREQ;	1276	dREQ;
964		1277
965	New (0, req->statdata, 1, Stat_t);	1278	New (0, req->statdata, 1, Stat_t);
966	if (!req->statdata)	1279	if (!req->statdata)
967	{	1280	{
968	free_req (req);	1281	req_free (req);
969	croak ("out of memory during aio_req->statdata allocation");	1282	croak ("out of memory during aio_req->statdata allocation");
970	}	1283	}
971		1284
972	if (SvPOK (fh_or_path))	1285	if (SvPOK (fh_or_path))
973	{	1286	{
…		…
980	req->type = REQ_FSTAT;	1293	req->type = REQ_FSTAT;
981	req->fh = newSVsv (fh_or_path);	1294	req->fh = newSVsv (fh_or_path);
982	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1295	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
983	}	1296	}
984		1297
985	send_req (req);	1298	REQ_SEND;
986	}	1299	}
987		1300
988	void	1301	void
989	aio_unlink(pathname,callback=&PL_sv_undef)	1302	aio_unlink (pathname,callback=&PL_sv_undef)
990	SV * pathname	1303	SV * pathname
991	SV * callback	1304	SV * callback
992	ALIAS:	1305	ALIAS:
993	aio_unlink = REQ_UNLINK	1306	aio_unlink = REQ_UNLINK
994	aio_rmdir = REQ_RMDIR	1307	aio_rmdir = REQ_RMDIR
		1308	aio_readdir = REQ_READDIR
995	CODE:	1309	PPCODE:
996	{	1310	{
997	dREQ;	1311	dREQ;
998		1312
999	req->type = ix;	1313	req->type = ix;
1000	req->data = newSVsv (pathname);	1314	req->data = newSVsv (pathname);
1001	req->dataptr = SvPVbyte_nolen (req->data);	1315	req->dataptr = SvPVbyte_nolen (req->data);
1002		1316
1003	send_req (req);	1317	REQ_SEND;
1004	}	1318	}
1005		1319
1006	void	1320	void
1007	aio_symlink(oldpath,newpath,callback=&PL_sv_undef)	1321	aio_link (oldpath,newpath,callback=&PL_sv_undef)
1008	SV * oldpath	1322	SV * oldpath
1009	SV * newpath	1323	SV * newpath
1010	SV * callback	1324	SV * callback
		1325	ALIAS:
		1326	aio_link = REQ_LINK
		1327	aio_symlink = REQ_SYMLINK
		1328	aio_rename = REQ_RENAME
1011	CODE:	1329	PPCODE:
1012	{	1330	{
1013	dREQ;	1331	dREQ;
1014		1332
1015	req->type = REQ_SYMLINK;	1333	req->type = ix;
1016	req->fh = newSVsv (oldpath);	1334	req->fh = newSVsv (oldpath);
1017	req->data2ptr = SvPVbyte_nolen (req->fh);	1335	req->data2ptr = SvPVbyte_nolen (req->fh);
1018	req->data = newSVsv (newpath);	1336	req->data = newSVsv (newpath);
1019	req->dataptr = SvPVbyte_nolen (req->data);	1337	req->dataptr = SvPVbyte_nolen (req->data);
1020		1338
1021	send_req (req);	1339	REQ_SEND;
1022	}	1340	}
1023		1341
1024	void	1342	void
1025	aio_readdir(pathname,callback=&PL_sv_undef)	1343	aio_busy (delay,callback=&PL_sv_undef)
1026	SV * pathname	1344	double delay
1027	SV * callback	1345	SV * callback
1028	CODE:	1346	PPCODE:
1029	{	1347	{
1030	dREQ;	1348	dREQ;
1031		1349
		1350	req->type = REQ_BUSY;
		1351	req->fd = delay < 0. ? 0 : delay;
		1352	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
		1353
		1354	REQ_SEND;
		1355	}
		1356
		1357	void
		1358	aio_group (callback=&PL_sv_undef)
		1359	SV * callback
		1360	PROTOTYPE: ;$
		1361	PPCODE:
		1362	{
		1363	dREQ;
		1364
1032	req->type = REQ_READDIR;	1365	req->type = REQ_GROUP;
1033	req->data = newSVsv (pathname);	1366	req_send (req);
1034	req->dataptr = SvPVbyte_nolen (req->data);
1035
1036	send_req (req);
1037	}
1038		1367
		1368	XPUSHs (req_sv (req, AIO_GRP_KLASS));
		1369	}
		1370
1039	void	1371	void
		1372	aio_nop (callback=&PL_sv_undef)
		1373	SV * callback
		1374	PPCODE:
		1375	{
		1376	dREQ;
		1377
		1378	req->type = REQ_NOP;
		1379
		1380	REQ_SEND;
		1381	}
		1382
		1383	void
		1384	aioreq_pri (int pri = DEFAULT_PRI)
		1385	CODE:
		1386	if (pri < PRI_MIN) pri = PRI_MIN;
		1387	if (pri > PRI_MAX) pri = PRI_MAX;
		1388	next_pri = pri + PRI_BIAS;
		1389
		1390	void
		1391	aioreq_nice (int nice = 0)
		1392	CODE:
		1393	nice = next_pri - nice;
		1394	if (nice < PRI_MIN) nice = PRI_MIN;
		1395	if (nice > PRI_MAX) nice = PRI_MAX;
		1396	next_pri = nice + PRI_BIAS;
		1397
		1398	void
1040	flush()	1399	flush ()
1041	PROTOTYPE:	1400	PROTOTYPE:
1042	CODE:	1401	CODE:
1043	while (nreqs)	1402	while (nreqs)
1044	{	1403	{
1045	poll_wait ();	1404	poll_wait ();
…		…
1085	CODE:	1444	CODE:
1086	RETVAL = nreqs;	1445	RETVAL = nreqs;
1087	OUTPUT:	1446	OUTPUT:
1088	RETVAL	1447	RETVAL
1089		1448
		1449	PROTOTYPES: DISABLE
		1450
		1451	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
		1452
		1453	void
		1454	cancel (aio_req_ornot req)
		1455	CODE:
		1456	req_cancel (req);
		1457
		1458	void
		1459	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
		1460	CODE:
		1461	SvREFCNT_dec (req->callback);
		1462	req->callback = newSVsv (callback);
		1463
		1464	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
		1465
		1466	void
		1467	add (aio_req grp, ...)
		1468	PPCODE:
		1469	{
		1470	int i;
		1471	aio_req req;
		1472
		1473	if (grp->fd == 2)
		1474	croak ("cannot add requests to IO::AIO::GRP after the group finished");
		1475
		1476	for (i = 1; i < items; ++i )
		1477	{
		1478	if (GIMME_V != G_VOID)
		1479	XPUSHs (sv_2mortal (newSVsv (ST (i))));
		1480
		1481	req = SvAIO_REQ (ST (i));
		1482
		1483	if (req)
		1484	{
		1485	++grp->length;
		1486	req->grp = grp;
		1487
		1488	req->grp_prev = 0;
		1489	req->grp_next = grp->grp_first;
		1490
		1491	if (grp->grp_first)
		1492	grp->grp_first->grp_prev = req;
		1493
		1494	grp->grp_first = req;
		1495	}
		1496	}
		1497	}
		1498
		1499	void
		1500	result (aio_req grp, ...)
		1501	CODE:
		1502	{
		1503	int i;
		1504	AV *av = newAV ();
		1505
		1506	for (i = 1; i < items; ++i )
		1507	av_push (av, newSVsv (ST (i)));
		1508
		1509	SvREFCNT_dec (grp->data);
		1510	grp->data = (SV *)av;
		1511	}
		1512
		1513	void
		1514	limit (aio_req grp, int limit)
		1515	CODE:
		1516	grp->fd2 = limit;
		1517	aio_grp_feed (grp);
		1518
		1519	void
		1520	feed (aio_req grp, SV *callback=&PL_sv_undef)
		1521	CODE:
		1522	{
		1523	SvREFCNT_dec (grp->fh2);
		1524	grp->fh2 = newSVsv (callback);
		1525
		1526	if (grp->fd2 <= 0)
		1527	grp->fd2 = 2;
		1528
		1529	aio_grp_feed (grp);
		1530	}
		1531

Diff Legend

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