ViewVC Help

View File | Revision Log | Show Annotations | Download File

/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.14 by root, Sat Jul 23 18:15:36 2005 UTC vs.
Revision 1.72 by root, Tue Oct 24 17:22:17 2006 UTC

		1	/* solaris */
		2	#define _POSIX_PTHREAD_SEMANTICS 1
		3
		4	#if __linux
		5	# define _GNU_SOURCE
		6	#endif
		7
		8	#define _REENTRANT 1
		9
		10	#include <errno.h>
		11
		12	#include "EXTERN.h"
1	#include "perl.h"	13	#include "perl.h"
2	#include "XSUB.h"	14	#include "XSUB.h"
3		15
		16	#include "autoconf/config.h"
		17
		18	#include <pthread.h>
		19
		20	#include <stddef.h>
		21	#include <errno.h>
		22	#include <sys/time.h>
		23	#include <sys/select.h>
4	#include <sys/types.h>	24	#include <sys/types.h>
5	#include <sys/stat.h>	25	#include <sys/stat.h>
6		26	#include <limits.h>
7	#include <unistd.h>	27	#include <unistd.h>
8	#include <fcntl.h>	28	#include <fcntl.h>
9	#include <signal.h>	29	#include <signal.h>
10	#include <sched.h>	30	#include <sched.h>
		31
		32	#if HAVE_SENDFILE
11	#if __linux	33	# if __linux
		34	# include <sys/sendfile.h>
		35	# elif __freebsd
12	#include <sys/syscall.h>	36	# include <sys/socket.h>
		37	# include <sys/uio.h>
		38	# elif __hpux
		39	# include <sys/socket.h>
		40	# elif __solaris /* not yet */
		41	# include <sys/sendfile.h>
		42	# else
		43	# error sendfile support requested but not available
13	#endif	44	# endif
		45	#endif
14		46
15	#include <pthread.h>	47	/* used for struct dirent, AIX doesn't provide it */
16		48	#ifndef NAME_MAX
17	typedef void *InputStream; /* hack, but 5.6.1 is simply toooo old ;) */	49	# define NAME_MAX 4096
18	typedef void *OutputStream; /* hack, but 5.6.1 is simply toooo old ;) */	50	#endif
19	typedef void *InOutStream; /* hack, but 5.6.1 is simply toooo old ;) */
20		51
21	#if __ia64	52	#if __ia64
22	# define STACKSIZE 65536	53	# define STACKSIZE 65536
		54	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
		55	# define STACKSIZE PTHREAD_STACK_MIN
23	#else	56	#else
24	# define STACKSIZE 4096	57	# define STACKSIZE 16384
25	#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;
26		70
27	enum {	71	enum {
28	REQ_QUIT,	72	REQ_QUIT,
29	REQ_OPEN, REQ_CLOSE,	73	REQ_OPEN, REQ_CLOSE,
30	REQ_READ, REQ_WRITE, REQ_READAHEAD,	74	REQ_READ, REQ_WRITE, REQ_READAHEAD,
		75	REQ_SENDFILE,
31	REQ_STAT, REQ_LSTAT, REQ_FSTAT, REQ_UNLINK,	76	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
32	REQ_FSYNC, REQ_FDATASYNC,	77	REQ_FSYNC, REQ_FDATASYNC,
		78	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
		79	REQ_READDIR,
		80	REQ_LINK, REQ_SYMLINK,
		81	REQ_GROUP, REQ_NOP,
		82	REQ_BUSY,
33	};	83	};
34		84
		85	#define AIO_REQ_KLASS "IO::AIO::REQ"
		86	#define AIO_GRP_KLASS "IO::AIO::GRP"
		87
35	typedef struct aio_cb {	88	typedef struct aio_cb
		89	{
36	struct aio_cb *volatile next;	90	struct aio_cb *volatile next;
37		91
38	int type;	92	SV *data, *callback;
39		93	SV *fh, *fh2;
40	int fd;	94	void *dataptr, *data2ptr;
		95	Stat_t *statdata;
41	off_t offset;	96	off_t offset;
42	size_t length;	97	size_t length;
43	ssize_t result;	98	ssize_t result;
		99
		100	STRLEN dataoffset;
		101	int type;
		102	int fd, fd2;
		103	int errorno;
44	mode_t mode; /* open */	104	mode_t mode; /* open */
45	int errorno;
46	SV *data, *callback, *fh;
47	void *dataptr;
48	STRLEN dataoffset;
49		105
50	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;
51	} aio_cb;	111	} aio_cb;
52		112
		113	enum {
		114	FLAG_CANCELLED = 0x01,
		115	};
		116
53	typedef aio_cb *aio_req;	117	typedef aio_cb *aio_req;
		118	typedef aio_cb *aio_req_ornot;
54		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;
		130
55	static int started;	131	static int started, wanted;
56	static volatile int nreqs;	132	static volatile int nreqs;
57	static int max_outstanding = 1<<30;	133	static int max_outstanding = 1<<30;
58	static int respipe [2];	134	static int respipe [2];
59		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
60	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	185	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
61	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;	186	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
62	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	187	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
63		188
64	static volatile aio_req reqs, reqe; /* queue start, queue end */	189	/*
65	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;
66		198
67	static void	199	static reqq req_queue;
68	poll_wait ()	200	static reqq res_queue;
		201
		202	int reqq_push (reqq *q, aio_req req)
69	{	203	{
70	if (nreqs && !ress)	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;
71	{	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);
		244	static void req_free (aio_req req);
		245	static void req_cancel (aio_req req);
		246
		247	/* must be called at most once */
		248	static SV *req_sv (aio_req req, const char *klass)
		249	{
		250	if (!req->self)
		251	{
		252	req->self = (SV *)newHV ();
		253	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
		254	}
		255
		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	{
		295	SvREFCNT_dec (grp->fh2);
		296	grp->fh2 = 0;
		297	break;
		298	}
		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	{
72	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
73	FD_ZERO(&rfd);	335	FD_ZERO(&rfd);
74	FD_SET(respipe [0], &rfd);	336	FD_SET(respipe [0], &rfd);
75		337
76	select (respipe [0] + 1, &rfd, 0, 0, 0);	338	select (respipe [0] + 1, &rfd, 0, 0, 0);
77	}	339	}
78	}	340	}
79		341
80	static int	342	static void req_invoke (aio_req req)
81	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 ()
82	{	496	{
83	dSP;	497	dSP;
84	int count = 0;	498	int count = 0;
		499	int do_croak = 0;
85	aio_req req, prv;	500	aio_req req;
86		501
87	pthread_mutex_lock (&reslock);	502	for (;;)
88
89	{	503	{
		504	LOCK (reslock);
		505	req = reqq_shift (&res_queue);
		506
		507	if (req)
		508	{
		509	if (!res_queue.size)
		510	{
90	/* read any signals sent by the worker threads */	511	/* read any signals sent by the worker threads */
91	char buf [32];	512	char buf [32];
92	while (read (respipe [0], buf, 32) > 0)	513	while (read (respipe [0], buf, 32) == 32)
		514	;
		515	}
93	;	516	}
94	}
95		517
96	req = ress;	518	UNLOCK (reslock);
97	ress = rese = 0;
98		519
99	pthread_mutex_unlock (&reslock);	520	if (!req)
		521	break;
100		522
101	while (req)
102	{
103	nreqs--;	523	--nreqs;
104		524
105	if (req->type == REQ_QUIT)	525	if (req->type == REQ_QUIT)
106	started--;	526	started--;
		527	else if (req->type == REQ_GROUP && req->length)
		528	{
		529	req->fd = 1; /* mark request as delayed */
		530	continue;
		531	}
107	else	532	else
108	{	533	{
109	int errorno = errno;
110	errno = req->errorno;
111
112	if (req->type == REQ_READ)	534	if (req->type == REQ_READ)
113	SvCUR_set (req->data, req->dataoffset	535	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
114	+ req->result > 0 ? req->result : 0);
115		536
		537	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
		538	SvREADONLY_off (req->data);
		539
116	if (req->data)	540	if (req->statdata)
117	SvREFCNT_dec (req->data);
118
119	if (req->fh)
120	SvREFCNT_dec (req->fh);
121
122	if (req->type == REQ_STAT || req->type == REQ_LSTAT || req->type == REQ_FSTAT)
123	{	541	{
124	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	542	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
125	PL_laststatval = req->result;	543	PL_laststatval = req->result;
126	PL_statcache = *(req->statdata);	544	PL_statcache = *(req->statdata);
127
128	Safefree (req->statdata);
129	}	545	}
130		546
131	ENTER;	547	req_invoke (req);
132	PUSHMARK (SP);
133	XPUSHs (sv_2mortal (newSViv (req->result)));
134		548
135	if (req->type == REQ_OPEN)
136	{
137	/* convert fd to fh */
138	SV *fh;
139
140	PUTBACK;
141	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
142	SPAGAIN;
143
144	fh = SvREFCNT_inc (POPs);
145
146	PUSHMARK (SP);
147	XPUSHs (sv_2mortal (fh));
148	}
149
150	if (SvOK (req->callback))
151	{
152	PUTBACK;
153	call_sv (req->callback, G_VOID | G_EVAL);
154	SPAGAIN;
155	}
156
157	LEAVE;
158
159	if (req->callback)
160	SvREFCNT_dec (req->callback);
161
162	errno = errorno;
163	count++;	549	count++;
164	}	550	}
165		551
166	prv = req;
167	req = req->next;
168	Safefree (prv);	552	req_free (req);
169
170	/* TODO: croak on errors? */
171	}	553	}
172		554
173	return count;	555	return count;
174	}	556	}
175		557
176	static void *aio_proc(void *arg);	558	static void *aio_proc(void *arg);
177		559
178	static void
179	start_thread (void)	560	static void start_thread (void)
180	{	561	{
		562	worker *wrk = calloc (1, sizeof (worker));
		563
		564	if (!wrk)
		565	croak ("unable to allocate worker thread data");
		566
181	sigset_t fullsigset, oldsigset;	567	sigset_t fullsigset, oldsigset;
182	pthread_t tid;
183	pthread_attr_t attr;	568	pthread_attr_t attr;
184		569
185	pthread_attr_init (&attr);	570	pthread_attr_init (&attr);
186	pthread_attr_setstacksize (&attr, STACKSIZE);	571	pthread_attr_setstacksize (&attr, STACKSIZE);
187	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);	572	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
188		573
189	sigfillset (&fullsigset);	574	sigfillset (&fullsigset);
		575
		576	LOCK (wrklock);
190	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);	577	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
191		578
192	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;
193	started++;	585	started++;
		586	}
		587	else
		588	free (wrk);
194		589
195	sigprocmask (SIG_SETMASK, &oldsigset, 0);	590	sigprocmask (SIG_SETMASK, &oldsigset, 0);
		591	UNLOCK (wrklock);
196	}	592	}
197		593
198	static void	594	static void req_send (aio_req req)
199	send_req (aio_req req)
200	{	595	{
		596	while (started < wanted && nreqs >= started)
		597	start_thread ();
		598
201	nreqs++;	599	++nreqs;
202		600
203	pthread_mutex_lock (&reqlock);	601	LOCK (reqlock);
204		602	reqq_push (&req_queue, req);
205	req->next = 0;
206
207	if (reqe)
208	{
209	reqe->next = req;
210	reqe = req;
211	}
212	else
213	reqe = reqs = req;
214
215	pthread_cond_signal (&reqwait);	603	pthread_cond_signal (&reqwait);
216	pthread_mutex_unlock (&reqlock);	604	UNLOCK (reqlock);
217		605
218	while (nreqs > max_outstanding)	606	if (nreqs > max_outstanding)
		607	for (;;)
		608	{
		609	poll_cb ();
		610
		611	if (nreqs <= max_outstanding)
		612	break;
		613
		614	poll_wait ();
		615	}
		616	}
		617
		618	static void end_thread (void)
		619	{
		620	aio_req req;
		621
		622	Newz (0, req, 1, aio_cb);
		623
		624	req->type = REQ_QUIT;
		625	req->pri = PRI_MAX + PRI_BIAS;
		626
		627	req_send (req);
		628	}
		629
		630	static void min_parallel (int nthreads)
		631	{
		632	if (wanted < nthreads)
		633	wanted = nthreads;
		634	}
		635
		636	static void max_parallel (int nthreads)
		637	{
		638	int cur = started;
		639
		640	if (wanted > nthreads)
		641	wanted = nthreads;
		642
		643	while (cur > wanted)
		644	{
		645	end_thread ();
		646	cur--;
		647	}
		648
		649	while (started > wanted)
219	{	650	{
220	poll_wait ();	651	poll_wait ();
221	poll_cb ();	652	poll_cb ();
222	}	653	}
223	}	654	}
224		655
225	static void	656	static void create_pipe ()
226	end_thread (void)
227	{	657	{
228	aio_req req;	658	if (pipe (respipe))
229	New (0, req, 1, aio_cb);	659	croak ("unable to initialize result pipe");
230	req->type = REQ_QUIT;
231		660
232	send_req (req);	661	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
233	}	662	croak ("cannot set result pipe to nonblocking mode");
234		663
235	static void *	664	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
		665	croak ("cannot set result pipe to nonblocking mode");
		666	}
		667
		668	/*****************************************************************************/
		669	/* work around various missing functions */
		670
		671	#if !HAVE_PREADWRITE
		672	# define pread aio_pread
		673	# define pwrite aio_pwrite
		674
		675	/*
		676	* make our pread/pwrite safe against themselves, but not against
		677	* normal read/write by using a mutex. slows down execution a lot,
		678	* but that's your problem, not mine.
		679	*/
		680	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
		681
		682	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
		683	{
		684	ssize_t res;
		685	off_t ooffset;
		686
		687	LOCK (preadwritelock);
		688	ooffset = lseek (fd, 0, SEEK_CUR);
		689	lseek (fd, offset, SEEK_SET);
		690	res = read (fd, buf, count);
		691	lseek (fd, ooffset, SEEK_SET);
		692	UNLOCK (preadwritelock);
		693
		694	return res;
		695	}
		696
		697	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
		698	{
		699	ssize_t res;
		700	off_t ooffset;
		701
		702	LOCK (preadwritelock);
		703	ooffset = lseek (fd, 0, SEEK_CUR);
		704	lseek (fd, offset, SEEK_SET);
		705	res = write (fd, buf, count);
		706	lseek (fd, offset, SEEK_SET);
		707	UNLOCK (preadwritelock);
		708
		709	return res;
		710	}
		711	#endif
		712
		713	#if !HAVE_FDATASYNC
		714	# define fdatasync fsync
		715	#endif
		716
		717	#if !HAVE_READAHEAD
		718	# define readahead aio_readahead
		719
		720	static ssize_t readahead (int fd, off_t offset, size_t count)
		721	{
		722	dBUF;
		723
		724	while (count > 0)
		725	{
		726	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
		727
		728	pread (fd, aio_buf, len, offset);
		729	offset += len;
		730	count -= len;
		731	}
		732
		733	errno = 0;
		734	}
		735	#endif
		736
		737	#if !HAVE_READDIR_R
		738	# define readdir_r aio_readdir_r
		739
		740	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
		741
		742	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
		743	{
		744	struct dirent *e;
		745	int errorno;
		746
		747	LOCK (readdirlock);
		748
		749	e = readdir (dirp);
		750	errorno = errno;
		751
		752	if (e)
		753	{
		754	*res = ent;
		755	strcpy (ent->d_name, e->d_name);
		756	}
		757	else
		758	*res = 0;
		759
		760	UNLOCK (readdirlock);
		761
		762	errno = errorno;
		763	return e ? 0 : -1;
		764	}
		765	#endif
		766
		767	/* sendfile always needs emulation */
		768	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
		769	{
		770	ssize_t res;
		771
		772	if (!count)
		773	return 0;
		774
		775	#if HAVE_SENDFILE
		776	# if __linux
		777	res = sendfile (ofd, ifd, &offset, count);
		778
		779	# elif __freebsd
		780	/*
		781	* Of course, the freebsd sendfile is a dire hack with no thoughts
		782	* wasted on making it similar to other I/O functions.
		783	*/
		784	{
		785	off_t sbytes;
		786	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
		787
		788	if (res < 0 && sbytes)
		789	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
		790	res = sbytes;
		791	}
		792
		793	# elif __hpux
		794	res = sendfile (ofd, ifd, offset, count, 0, 0);
		795
		796	# elif __solaris
		797	{
		798	struct sendfilevec vec;
		799	size_t sbytes;
		800
		801	vec.sfv_fd = ifd;
		802	vec.sfv_flag = 0;
		803	vec.sfv_off = offset;
		804	vec.sfv_len = count;
		805
		806	res = sendfilev (ofd, &vec, 1, &sbytes);
		807
		808	if (res < 0 && sbytes)
		809	res = sbytes;
		810	}
		811
		812	# endif
		813	#else
		814	res = -1;
		815	errno = ENOSYS;
		816	#endif
		817
		818	if (res < 0
		819	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
		820	#if __solaris
		821	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
		822	#endif
		823	)
		824	)
		825	{
		826	/* emulate sendfile. this is a major pain in the ass */
		827	dBUF;
		828
		829	res = 0;
		830
		831	while (count)
		832	{
		833	ssize_t cnt;
		834
		835	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
		836
		837	if (cnt <= 0)
		838	{
		839	if (cnt && !res) res = -1;
		840	break;
		841	}
		842
		843	cnt = write (ofd, aio_buf, cnt);
		844
		845	if (cnt <= 0)
		846	{
		847	if (cnt && !res) res = -1;
		848	break;
		849	}
		850
		851	offset += cnt;
		852	res += cnt;
		853	count -= cnt;
		854	}
		855	}
		856
		857	return res;
		858	}
		859
		860	/* read a full directory */
		861	static void scandir_ (aio_req req, worker *self)
		862	{
		863	DIR *dirp;
		864	union
		865	{
		866	struct dirent d;
		867	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
		868	} *u;
		869	struct dirent *entp;
		870	char *name, *names;
		871	int memlen = 4096;
		872	int memofs = 0;
		873	int res = 0;
		874	int errorno;
		875
		876	LOCK (wrklock);
		877	self->dirp = dirp = opendir (req->dataptr);
		878	self->dbuf = u = malloc (sizeof (*u));
		879	UNLOCK (wrklock);
		880
		881	req->data2ptr = names = malloc (memlen);
		882
		883	if (dirp && u && names)
		884	for (;;)
		885	{
		886	errno = 0;
		887	readdir_r (dirp, &u->d, &entp);
		888
		889	if (!entp)
		890	break;
		891
		892	name = entp->d_name;
		893
		894	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
		895	{
		896	int len = strlen (name) + 1;
		897
		898	res++;
		899
		900	while (memofs + len > memlen)
		901	{
		902	memlen *= 2;
		903	LOCK (wrklock);
		904	req->data2ptr = names = realloc (names, memlen);
		905	UNLOCK (wrklock);
		906
		907	if (!names)
		908	break;
		909	}
		910
		911	memcpy (names + memofs, name, len);
		912	memofs += len;
		913	}
		914	}
		915
		916	if (errno)
		917	res = -1;
		918
		919	req->result = res;
		920	}
		921
		922	/*****************************************************************************/
		923
236	aio_proc (void *thr_arg)	924	static void *aio_proc (void *thr_arg)
237	{	925	{
238	aio_req req;	926	aio_req req;
239	int type;	927	int type;
		928	worker *self = (worker *)thr_arg;
240		929
241	do	930	do
242	{	931	{
243	pthread_mutex_lock (&reqlock);	932	LOCK (reqlock);
244		933
245	for (;;)	934	for (;;)
246	{	935	{
247	req = reqs;	936	self->req = req = reqq_shift (&req_queue);
248
249	if (reqs)
250	{
251	reqs = reqs->next;
252	if (!reqs) reqe = 0;
253	}
254		937
255	if (req)	938	if (req)
256	break;	939	break;
257		940
258	pthread_cond_wait (&reqwait, &reqlock);	941	pthread_cond_wait (&reqwait, &reqlock);
259	}	942	}
260		943
261	pthread_mutex_unlock (&reqlock);	944	UNLOCK (reqlock);
262		945
263	errno = 0; /* strictly unnecessary */	946	errno = 0; /* strictly unnecessary */
		947	type = req->type; /* remember type for QUIT check */
264		948
265	type = req->type;	949	if (!(req->flags & FLAG_CANCELLED))
266
267	switch (type)	950	switch (type)
268	{	951	{
269	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;	952	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
270	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;	953	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
271	#if SYS_readahead	954
272	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	955	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
273	#else	956	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length, self); break;
274	case REQ_READAHEAD: req->result = -1; errno = ENOSYS; break;
275	#endif
276		957
277	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	958	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
278	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	959	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
279	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	960	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
280		961
281	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;	962	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
282	case REQ_CLOSE: req->result = close (req->fd); break;	963	case REQ_CLOSE: req->result = close (req->fd); break;
283	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	964	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
284
285	case REQ_FSYNC: req->result = fsync (req->fd); break;	965	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
		966	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
		967	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
		968	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
		969
286	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	970	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
		971	case REQ_FSYNC: req->result = fsync (req->fd); break;
		972	case REQ_READDIR: scandir_ (req, self); break;
287		973
		974	case REQ_BUSY:
		975	{
		976	struct timeval tv;
		977
		978	tv.tv_sec = req->fd;
		979	tv.tv_usec = req->fd2;
		980
		981	req->result = select (0, 0, 0, 0, &tv);
		982	}
		983
		984	case REQ_GROUP:
		985	case REQ_NOP:
288	case REQ_QUIT:	986	case REQ_QUIT:
289	break;	987	break;
290		988
291	default:	989	default:
292	req->result = ENOSYS;	990	req->result = ENOSYS;
293	break;	991	break;
294	}	992	}
295		993
296	req->errorno = errno;	994	req->errorno = errno;
297		995
298	pthread_mutex_lock (&reslock);	996	LOCK (reslock);
299		997
300	req->next = 0;	998	if (!reqq_push (&res_queue, req))
301
302	if (rese)
303	{
304	rese->next = req;
305	rese = req;
306	}
307	else
308	{
309	rese = ress = req;
310
311	/* write a dummy byte to the pipe so fh becomes ready */	999	/* write a dummy byte to the pipe so fh becomes ready */
312	write (respipe [1], &respipe, 1);	1000	write (respipe [1], &respipe, 1);
313	}
314		1001
315	pthread_mutex_unlock (&reslock);	1002	self->req = 0;
		1003	worker_clear (self);
		1004
		1005	UNLOCK (reslock);
316	}	1006	}
317	while (type != REQ_QUIT);	1007	while (type != REQ_QUIT);
318		1008
		1009	LOCK (wrklock);
		1010	worker_free (self);
		1011	UNLOCK (wrklock);
		1012
319	return 0;	1013	return 0;
320	}	1014	}
321		1015
		1016	/*****************************************************************************/
		1017
		1018	static void atfork_prepare (void)
		1019	{
		1020	LOCK (wrklock);
		1021	LOCK (reqlock);
		1022	LOCK (reslock);
		1023	#if !HAVE_PREADWRITE
		1024	LOCK (preadwritelock);
		1025	#endif
		1026	#if !HAVE_READDIR_R
		1027	LOCK (readdirlock);
		1028	#endif
		1029	}
		1030
		1031	static void atfork_parent (void)
		1032	{
		1033	#if !HAVE_READDIR_R
		1034	UNLOCK (readdirlock);
		1035	#endif
		1036	#if !HAVE_PREADWRITE
		1037	UNLOCK (preadwritelock);
		1038	#endif
		1039	UNLOCK (reslock);
		1040	UNLOCK (reqlock);
		1041	UNLOCK (wrklock);
		1042	}
		1043
		1044	static void atfork_child (void)
		1045	{
		1046	aio_req prv;
		1047
		1048	while (prv = reqq_shift (&req_queue))
		1049	req_free (prv);
		1050
		1051	while (prv = reqq_shift (&res_queue))
		1052	req_free (prv);
		1053
		1054	while (wrk_first.next != &wrk_first)
		1055	{
		1056	worker *wrk = wrk_first.next;
		1057
		1058	if (wrk->req)
		1059	req_free (wrk->req);
		1060
		1061	worker_clear (wrk);
		1062	worker_free (wrk);
		1063	}
		1064
		1065	started = 0;
		1066	nreqs = 0;
		1067
		1068	close (respipe [0]);
		1069	close (respipe [1]);
		1070	create_pipe ();
		1071
		1072	atfork_parent ();
		1073	}
		1074
		1075	#define dREQ \
		1076	aio_req req; \
		1077	int req_pri = next_pri; \
		1078	next_pri = DEFAULT_PRI + PRI_BIAS; \
		1079	\
		1080	if (SvOK (callback) && !SvROK (callback)) \
		1081	croak ("callback must be undef or of reference type"); \
		1082	\
		1083	Newz (0, req, 1, aio_cb); \
		1084	if (!req) \
		1085	croak ("out of memory during aio_req allocation"); \
		1086	\
		1087	req->callback = newSVsv (callback); \
		1088	req->pri = req_pri
		1089
		1090	#define REQ_SEND \
		1091	req_send (req); \
		1092	\
		1093	if (GIMME_V != G_VOID) \
		1094	XPUSHs (req_sv (req, AIO_REQ_KLASS));
		1095
322	MODULE = IO::AIO PACKAGE = IO::AIO	1096	MODULE = IO::AIO PACKAGE = IO::AIO
323		1097
324	PROTOTYPES: ENABLE	1098	PROTOTYPES: ENABLE
325		1099
326	BOOT:	1100	BOOT:
327	{	1101	{
328	if (pipe (respipe))	1102	HV *stash = gv_stashpv ("IO::AIO", 1);
329	croak ("unable to initialize result pipe");	1103	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
		1104	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
		1105	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
330		1106
331	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))	1107	create_pipe ();
332	croak ("cannot set result pipe to nonblocking mode");	1108	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
333
334	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
335	croak ("cannot set result pipe to nonblocking mode");
336	}	1109	}
337		1110
338	void	1111	void
339	min_parallel(nthreads)	1112	min_parallel (nthreads)
340	int nthreads	1113	int nthreads
341	PROTOTYPE: $	1114	PROTOTYPE: $
342	CODE:
343	while (nthreads > started)
344	start_thread ();
345		1115
346	void	1116	void
347	max_parallel(nthreads)	1117	max_parallel (nthreads)
348	int nthreads	1118	int nthreads
349	PROTOTYPE: $	1119	PROTOTYPE: $
350	CODE:
351	{
352	int cur = started;
353	while (cur > nthreads)
354	{
355	end_thread ();
356	cur--;
357	}
358
359	while (started > nthreads)
360	{
361	poll_wait ();
362	poll_cb ();
363	}
364	}
365		1120
366	int	1121	int
367	max_outstanding(nreqs)	1122	max_outstanding (nreqs)
368	int nreqs	1123	int nreqs
369	PROTOTYPE: $	1124	PROTOTYPE: $
370	CODE:	1125	CODE:
371	RETVAL = max_outstanding;	1126	RETVAL = max_outstanding;
372	max_outstanding = nreqs;	1127	max_outstanding = nreqs;
373		1128
374	void	1129	void
375	aio_open(pathname,flags,mode,callback=&PL_sv_undef)	1130	aio_open (pathname,flags,mode,callback=&PL_sv_undef)
376	SV * pathname	1131	SV * pathname
377	int flags	1132	int flags
378	int mode	1133	int mode
379	SV * callback	1134	SV * callback
380	PROTOTYPE: $$$;$	1135	PROTOTYPE: $$$;$
381	CODE:	1136	PPCODE:
382	{	1137	{
383	aio_req req;	1138	dREQ;
384
385	Newz (0, req, 1, aio_cb);
386
387	if (!req)
388	croak ("out of memory during aio_req allocation");
389		1139
390	req->type = REQ_OPEN;	1140	req->type = REQ_OPEN;
391	req->data = newSVsv (pathname);	1141	req->data = newSVsv (pathname);
392	req->dataptr = SvPV_nolen (req->data);	1142	req->dataptr = SvPVbyte_nolen (req->data);
393	req->fd = flags;	1143	req->fd = flags;
394	req->mode = mode;	1144	req->mode = mode;
395	req->callback = SvREFCNT_inc (callback);
396		1145
397	send_req (req);	1146	REQ_SEND;
398	}	1147	}
399		1148
400	void	1149	void
401	aio_close(fh,callback=&PL_sv_undef)	1150	aio_close (fh,callback=&PL_sv_undef)
402	SV * fh	1151	SV * fh
403	SV * callback	1152	SV * callback
404	PROTOTYPE: $;$	1153	PROTOTYPE: $;$
405	ALIAS:	1154	ALIAS:
406	aio_close = REQ_CLOSE	1155	aio_close = REQ_CLOSE
407	aio_fsync = REQ_FSYNC	1156	aio_fsync = REQ_FSYNC
408	aio_fdatasync = REQ_FDATASYNC	1157	aio_fdatasync = REQ_FDATASYNC
409	CODE:	1158	PPCODE:
410	{	1159	{
411	aio_req req;	1160	dREQ;
412
413	Newz (0, req, 1, aio_cb);
414
415	if (!req)
416	croak ("out of memory during aio_req allocation");
417		1161
418	req->type = ix;	1162	req->type = ix;
419	req->fh = newSVsv (fh);	1163	req->fh = newSVsv (fh);
420	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1164	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
421	req->callback = SvREFCNT_inc (callback);
422		1165
423	send_req (req);	1166	REQ_SEND (req);
424	}	1167	}
425		1168
426	void	1169	void
427	aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1170	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
428	SV * fh	1171	SV * fh
429	UV offset	1172	UV offset
430	IV length	1173	UV length
431	SV * data	1174	SV * data
432	IV dataoffset	1175	UV dataoffset
433	SV * callback	1176	SV * callback
434	ALIAS:	1177	ALIAS:
435	aio_read = REQ_READ	1178	aio_read = REQ_READ
436	aio_write = REQ_WRITE	1179	aio_write = REQ_WRITE
437	PROTOTYPE: $$$$$;$	1180	PROTOTYPE: $$$$$;$
438	CODE:	1181	PPCODE:
439	{	1182	{
440	aio_req req;	1183	aio_req req;
441	STRLEN svlen;	1184	STRLEN svlen;
442	char *svptr = SvPV (data, svlen);	1185	char *svptr = SvPVbyte (data, svlen);
443		1186
444	SvUPGRADE (data, SVt_PV);	1187	SvUPGRADE (data, SVt_PV);
445	SvPOK_on (data);	1188	SvPOK_on (data);
446		1189
447	if (dataoffset < 0)	1190	if (dataoffset < 0)
…		…
463	}	1206	}
464		1207
465	if (length < 0)	1208	if (length < 0)
466	croak ("length must not be negative");	1209	croak ("length must not be negative");
467		1210
468	Newz (0, req, 1, aio_cb);	1211	{
		1212	dREQ;
469		1213
470	if (!req)
471	croak ("out of memory during aio_req allocation");
472
473	req->type = ix;	1214	req->type = ix;
474	req->fh = newSVsv (fh);	1215	req->fh = newSVsv (fh);
475	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1216	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
476	: IoOFP (sv_2io (fh)));	1217	: IoOFP (sv_2io (fh)));
477	req->offset = offset;	1218	req->offset = offset;
		1219	req->length = length;
		1220	req->data = SvREFCNT_inc (data);
		1221	req->dataptr = (char *)svptr + dataoffset;
		1222
		1223	if (!SvREADONLY (data))
		1224	{
		1225	SvREADONLY_on (data);
		1226	req->data2ptr = (void *)data;
		1227	}
		1228
		1229	REQ_SEND;
		1230	}
		1231	}
		1232
		1233	void
		1234	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)
		1235	SV * out_fh
		1236	SV * in_fh
		1237	UV in_offset
		1238	UV length
		1239	SV * callback
		1240	PROTOTYPE: $$$$;$
		1241	PPCODE:
		1242	{
		1243	dREQ;
		1244
		1245	req->type = REQ_SENDFILE;
		1246	req->fh = newSVsv (out_fh);
		1247	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
		1248	req->fh2 = newSVsv (in_fh);
		1249	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
		1250	req->offset = in_offset;
478	req->length = length;	1251	req->length = length;
479	req->data = SvREFCNT_inc (data);
480	req->dataptr = (char *)svptr + dataoffset;
481	req->callback = SvREFCNT_inc (callback);
482		1252
483	send_req (req);	1253	REQ_SEND;
484	}	1254	}
485		1255
486	void	1256	void
487	aio_readahead(fh,offset,length,callback=&PL_sv_undef)	1257	aio_readahead (fh,offset,length,callback=&PL_sv_undef)
488	SV * fh	1258	SV * fh
489	UV offset	1259	UV offset
490	IV length	1260	IV length
491	SV * callback	1261	SV * callback
492	PROTOTYPE: $$$;$	1262	PROTOTYPE: $$$;$
493	CODE:	1263	PPCODE:
494	{	1264	{
495	aio_req req;	1265	dREQ;
496
497	if (length < 0)
498	croak ("length must not be negative");
499
500	Newz (0, req, 1, aio_cb);
501
502	if (!req)
503	croak ("out of memory during aio_req allocation");
504		1266
505	req->type = REQ_READAHEAD;	1267	req->type = REQ_READAHEAD;
506	req->fh = newSVsv (fh);	1268	req->fh = newSVsv (fh);
507	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1269	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
508	req->offset = offset;	1270	req->offset = offset;
509	req->length = length;	1271	req->length = length;
510	req->callback = SvREFCNT_inc (callback);
511		1272
512	send_req (req);	1273	REQ_SEND;
513	}	1274	}
514		1275
515	void	1276	void
516	aio_stat(fh_or_path,callback=&PL_sv_undef)	1277	aio_stat (fh_or_path,callback=&PL_sv_undef)
517	SV * fh_or_path	1278	SV * fh_or_path
518	SV * callback	1279	SV * callback
519	ALIAS:	1280	ALIAS:
520	aio_stat = REQ_STAT	1281	aio_stat = REQ_STAT
521	aio_lstat = REQ_LSTAT	1282	aio_lstat = REQ_LSTAT
522	CODE:	1283	PPCODE:
523	{	1284	{
524	aio_req req;	1285	dREQ;
525
526	Newz (0, req, 1, aio_cb);
527
528	if (!req)
529	croak ("out of memory during aio_req allocation");
530		1286
531	New (0, req->statdata, 1, Stat_t);	1287	New (0, req->statdata, 1, Stat_t);
532
533	if (!req->statdata)	1288	if (!req->statdata)
		1289	{
		1290	req_free (req);
534	croak ("out of memory during aio_req->statdata allocation");	1291	croak ("out of memory during aio_req->statdata allocation");
		1292	}
535		1293
536	if (SvPOK (fh_or_path))	1294	if (SvPOK (fh_or_path))
537	{	1295	{
538	req->type = ix;	1296	req->type = ix;
539	req->data = newSVsv (fh_or_path);	1297	req->data = newSVsv (fh_or_path);
540	req->dataptr = SvPV_nolen (req->data);	1298	req->dataptr = SvPVbyte_nolen (req->data);
541	}	1299	}
542	else	1300	else
543	{	1301	{
544	req->type = REQ_FSTAT;	1302	req->type = REQ_FSTAT;
545	req->fh = newSVsv (fh_or_path);	1303	req->fh = newSVsv (fh_or_path);
546	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1304	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
547	}	1305	}
548		1306
549	req->callback = SvREFCNT_inc (callback);	1307	REQ_SEND;
550
551	send_req (req);
552	}	1308	}
553		1309
554	void	1310	void
555	aio_unlink(pathname,callback=&PL_sv_undef)	1311	aio_unlink (pathname,callback=&PL_sv_undef)
556	SV * pathname	1312	SV * pathname
557	SV * callback	1313	SV * callback
		1314	ALIAS:
		1315	aio_unlink = REQ_UNLINK
		1316	aio_rmdir = REQ_RMDIR
		1317	aio_readdir = REQ_READDIR
558	CODE:	1318	PPCODE:
559	{	1319	{
560	aio_req req;	1320	dREQ;
561		1321
562	Newz (0, req, 1, aio_cb);	1322	req->type = ix;
		1323	req->data = newSVsv (pathname);
		1324	req->dataptr = SvPVbyte_nolen (req->data);
563		1325
564	if (!req)	1326	REQ_SEND;
565	croak ("out of memory during aio_req allocation");	1327	}
		1328
		1329	void
		1330	aio_link (oldpath,newpath,callback=&PL_sv_undef)
		1331	SV * oldpath
		1332	SV * newpath
		1333	SV * callback
		1334	ALIAS:
		1335	aio_link = REQ_LINK
		1336	aio_symlink = REQ_SYMLINK
		1337	aio_rename = REQ_RENAME
		1338	PPCODE:
		1339	{
		1340	dREQ;
566		1341
567	req->type = REQ_UNLINK;	1342	req->type = ix;
		1343	req->fh = newSVsv (oldpath);
		1344	req->data2ptr = SvPVbyte_nolen (req->fh);
568	req->data = newSVsv (pathname);	1345	req->data = newSVsv (newpath);
569	req->dataptr = SvPV_nolen (req->data);	1346	req->dataptr = SvPVbyte_nolen (req->data);
570	req->callback = SvREFCNT_inc (callback);
571		1347
572	send_req (req);	1348	REQ_SEND;
573	}	1349	}
574		1350
575	void	1351	void
		1352	aio_busy (delay,callback=&PL_sv_undef)
		1353	double delay
		1354	SV * callback
		1355	PPCODE:
		1356	{
		1357	dREQ;
		1358
		1359	req->type = REQ_BUSY;
		1360	req->fd = delay < 0. ? 0 : delay;
		1361	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
		1362
		1363	REQ_SEND;
		1364	}
		1365
		1366	void
		1367	aio_group (callback=&PL_sv_undef)
		1368	SV * callback
		1369	PROTOTYPE: ;$
		1370	PPCODE:
		1371	{
		1372	dREQ;
		1373
		1374	req->type = REQ_GROUP;
		1375	req_send (req);
		1376
		1377	XPUSHs (req_sv (req, AIO_GRP_KLASS));
		1378	}
		1379
		1380	void
		1381	aio_nop (callback=&PL_sv_undef)
		1382	SV * callback
		1383	PPCODE:
		1384	{
		1385	dREQ;
		1386
		1387	req->type = REQ_NOP;
		1388
		1389	REQ_SEND;
		1390	}
		1391
		1392	void
		1393	aioreq_pri (int pri = DEFAULT_PRI)
		1394	CODE:
		1395	if (pri < PRI_MIN) pri = PRI_MIN;
		1396	if (pri > PRI_MAX) pri = PRI_MAX;
		1397	next_pri = pri + PRI_BIAS;
		1398
		1399	void
		1400	aioreq_nice (int nice = 0)
		1401	CODE:
		1402	nice = next_pri - nice;
		1403	if (nice < PRI_MIN) nice = PRI_MIN;
		1404	if (nice > PRI_MAX) nice = PRI_MAX;
		1405	next_pri = nice + PRI_BIAS;
		1406
		1407	void
576	flush()	1408	flush ()
577	PROTOTYPE:	1409	PROTOTYPE:
578	CODE:	1410	CODE:
579	while (nreqs)	1411	while (nreqs)
580	{	1412	{
581	poll_wait ();	1413	poll_wait ();
…		…
621	CODE:	1453	CODE:
622	RETVAL = nreqs;	1454	RETVAL = nreqs;
623	OUTPUT:	1455	OUTPUT:
624	RETVAL	1456	RETVAL
625		1457
		1458	PROTOTYPES: DISABLE
		1459
		1460	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
		1461
		1462	void
		1463	cancel (aio_req_ornot req)
		1464	CODE:
		1465	req_cancel (req);
		1466
		1467	void
		1468	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
		1469	CODE:
		1470	SvREFCNT_dec (req->callback);
		1471	req->callback = newSVsv (callback);
		1472
		1473	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
		1474
		1475	void
		1476	add (aio_req grp, ...)
		1477	PPCODE:
		1478	{
		1479	int i;
		1480	aio_req req;
		1481
		1482	if (grp->fd == 2)
		1483	croak ("cannot add requests to IO::AIO::GRP after the group finished");
		1484
		1485	for (i = 1; i < items; ++i )
		1486	{
		1487	if (GIMME_V != G_VOID)
		1488	XPUSHs (sv_2mortal (newSVsv (ST (i))));
		1489
		1490	req = SvAIO_REQ (ST (i));
		1491
		1492	if (req)
		1493	{
		1494	++grp->length;
		1495	req->grp = grp;
		1496
		1497	req->grp_prev = 0;
		1498	req->grp_next = grp->grp_first;
		1499
		1500	if (grp->grp_first)
		1501	grp->grp_first->grp_prev = req;
		1502
		1503	grp->grp_first = req;
		1504	}
		1505	}
		1506	}
		1507
		1508	void
		1509	cancel_subs (aio_req_ornot req)
		1510	CODE:
		1511	req_cancel_subs (req);
		1512
		1513	void
		1514	result (aio_req grp, ...)
		1515	CODE:
		1516	{
		1517	int i;
		1518	AV *av = newAV ();
		1519
		1520	for (i = 1; i < items; ++i )
		1521	av_push (av, newSVsv (ST (i)));
		1522
		1523	SvREFCNT_dec (grp->data);
		1524	grp->data = (SV *)av;
		1525	}
		1526
		1527	void
		1528	limit (aio_req grp, int limit)
		1529	CODE:
		1530	grp->fd2 = limit;
		1531	aio_grp_feed (grp);
		1532
		1533	void
		1534	feed (aio_req grp, SV *callback=&PL_sv_undef)
		1535	CODE:
		1536	{
		1537	SvREFCNT_dec (grp->fh2);
		1538	grp->fh2 = newSVsv (callback);
		1539
		1540	if (grp->fd2 <= 0)
		1541	grp->fd2 = 2;
		1542
		1543	aio_grp_feed (grp);
		1544	}
		1545

Diff Legend

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