ViewVC Help

View File | Revision Log | Show Annotations | Download File

/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.23 by root, Tue Aug 16 23:33:34 2005 UTC vs.
Revision 1.71 by root, Tue Oct 24 16:35:04 2006 UTC

		1	/* solaris */
		2	#define _POSIX_PTHREAD_SEMANTICS 1
		3
		4	#if __linux
		5	# define _GNU_SOURCE
		6	#endif
		7
1	#define _REENTRANT 1	8	#define _REENTRANT 1
		9
2	#include <errno.h>	10	#include <errno.h>
3		11
4	#include "EXTERN.h"	12	#include "EXTERN.h"
5	#include "perl.h"	13	#include "perl.h"
6	#include "XSUB.h"	14	#include "XSUB.h"
7		15
8	#include "autoconf/config.h"	16	#include "autoconf/config.h"
9		17
		18	#include <pthread.h>
		19
		20	#include <stddef.h>
		21	#include <errno.h>
		22	#include <sys/time.h>
		23	#include <sys/select.h>
10	#include <sys/types.h>	24	#include <sys/types.h>
11	#include <sys/stat.h>	25	#include <sys/stat.h>
12		26	#include <limits.h>
13	#include <unistd.h>	27	#include <unistd.h>
14	#include <fcntl.h>	28	#include <fcntl.h>
15	#include <signal.h>	29	#include <signal.h>
16	#include <sched.h>	30	#include <sched.h>
17		31
18	#include <pthread.h>	32	#if HAVE_SENDFILE
		33	# if __linux
		34	# include <sys/sendfile.h>
		35	# elif __freebsd
		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
		44	# endif
		45	#endif
19		46
20	typedef void *InputStream; /* hack, but 5.6.1 is simply toooo old ;) */	47	/* used for struct dirent, AIX doesn't provide it */
21	typedef void *OutputStream; /* hack, but 5.6.1 is simply toooo old ;) */	48	#ifndef NAME_MAX
22	typedef void *InOutStream; /* hack, but 5.6.1 is simply toooo old ;) */	49	# define NAME_MAX 4096
		50	#endif
23		51
24	#if __ia64	52	#if __ia64
25	# define STACKSIZE 65536	53	# define STACKSIZE 65536
		54	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
		55	# define STACKSIZE PTHREAD_STACK_MIN
26	#else	56	#else
27	# define STACKSIZE 4096	57	# define STACKSIZE 16384
28	#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;
29		70
30	enum {	71	enum {
31	REQ_QUIT,	72	REQ_QUIT,
32	REQ_OPEN, REQ_CLOSE,	73	REQ_OPEN, REQ_CLOSE,
33	REQ_READ, REQ_WRITE, REQ_READAHEAD,	74	REQ_READ, REQ_WRITE, REQ_READAHEAD,
		75	REQ_SENDFILE,
34	REQ_STAT, REQ_LSTAT, REQ_FSTAT,	76	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
35	REQ_FSYNC, REQ_FDATASYNC,	77	REQ_FSYNC, REQ_FDATASYNC,
36	REQ_UNLINK, REQ_RMDIR,	78	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
37	REQ_SYMLINK,	79	REQ_READDIR,
		80	REQ_LINK, REQ_SYMLINK,
		81	REQ_GROUP, REQ_NOP,
		82	REQ_BUSY,
38	};	83	};
39		84
		85	#define AIO_REQ_KLASS "IO::AIO::REQ"
		86	#define AIO_GRP_KLASS "IO::AIO::GRP"
		87
40	typedef struct aio_cb {	88	typedef struct aio_cb
		89	{
41	struct aio_cb *volatile next;	90	struct aio_cb *volatile next;
42		91
43	int type;	92	SV *data, *callback;
44		93	SV *fh, *fh2;
45	int fd;	94	void *dataptr, *data2ptr;
		95	Stat_t *statdata;
46	off_t offset;	96	off_t offset;
47	size_t length;	97	size_t length;
48	ssize_t result;	98	ssize_t result;
		99
		100	STRLEN dataoffset;
		101	int type;
		102	int fd, fd2;
		103	int errorno;
49	mode_t mode; /* open */	104	mode_t mode; /* open */
50	int errorno;
51	SV *data, *callback, *fh;
52	void *dataptr, *data2ptr;
53	STRLEN dataoffset;
54		105
55	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;
56	} aio_cb;	111	} aio_cb;
57		112
		113	enum {
		114	FLAG_CANCELLED = 0x01,
		115	};
		116
58	typedef aio_cb *aio_req;	117	typedef aio_cb *aio_req;
		118	typedef aio_cb *aio_req_ornot;
59		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
60	static int started;	131	static int started, wanted;
61	static volatile int nreqs;	132	static volatile int nreqs;
62	static int max_outstanding = 1<<30;	133	static int max_outstanding = 1<<30;
63	static int respipe [2];	134	static int respipe [2];
64		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
65	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	185	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
66	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;	186	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
67	static pthread_mutex_t frklock = PTHREAD_MUTEX_INITIALIZER;
68	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	187	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
69		188
70	static volatile aio_req reqs, reqe; /* queue start, queue end */	189	/*
71	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;
72		198
73	static void	199	static reqq req_queue;
74	poll_wait ()	200	static reqq res_queue;
		201
		202	int reqq_push (reqq *q, aio_req req)
75	{	203	{
76	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;
77	{	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
		246	/* must be called at most once */
		247	static SV *req_sv (aio_req req, const char *klass)
		248	{
		249	if (!req->self)
		250	{
		251	req->self = (SV *)newHV ();
		252	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
		253	}
		254
		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	{
		294	SvREFCNT_dec (grp->fh2);
		295	grp->fh2 = 0;
		296	break;
		297	}
		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	{
78	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
79	FD_ZERO(&rfd);	334	FD_ZERO(&rfd);
80	FD_SET(respipe [0], &rfd);	335	FD_SET(respipe [0], &rfd);
81		336
82	select (respipe [0] + 1, &rfd, 0, 0, 0);	337	select (respipe [0] + 1, &rfd, 0, 0, 0);
83	}	338	}
84	}	339	}
85		340
86	static int	341	static void req_invoke (aio_req req)
87	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 ()
88	{	487	{
89	dSP;	488	dSP;
90	int count = 0;	489	int count = 0;
		490	int do_croak = 0;
91	aio_req req, prv;	491	aio_req req;
92		492
93	pthread_mutex_lock (&reslock);	493	for (;;)
94
95	{	494	{
		495	LOCK (reslock);
		496	req = reqq_shift (&res_queue);
		497
		498	if (req)
		499	{
		500	if (!res_queue.size)
		501	{
96	/* read any signals sent by the worker threads */	502	/* read any signals sent by the worker threads */
97	char buf [32];	503	char buf [32];
98	while (read (respipe [0], buf, 32) == 32)	504	while (read (respipe [0], buf, 32) == 32)
		505	;
		506	}
99	;	507	}
100	}
101		508
102	req = ress;	509	UNLOCK (reslock);
103	ress = rese = 0;
104		510
105	pthread_mutex_unlock (&reslock);	511	if (!req)
		512	break;
106		513
107	while (req)
108	{
109	nreqs--;	514	--nreqs;
110		515
111	if (req->type == REQ_QUIT)	516	if (req->type == REQ_QUIT)
112	started--;	517	started--;
		518	else if (req->type == REQ_GROUP && req->length)
		519	{
		520	req->fd = 1; /* mark request as delayed */
		521	continue;
		522	}
113	else	523	else
114	{	524	{
115	int errorno = errno;
116	errno = req->errorno;
117
118	if (req->type == REQ_READ)	525	if (req->type == REQ_READ)
119	SvCUR_set (req->data, req->dataoffset	526	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
120	+ req->result > 0 ? req->result : 0);
121		527
		528	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
		529	SvREADONLY_off (req->data);
		530
122	if (req->data)	531	if (req->statdata)
123	SvREFCNT_dec (req->data);
124
125	if (req->fh)
126	SvREFCNT_dec (req->fh);
127
128	if (req->type == REQ_STAT || req->type == REQ_LSTAT || req->type == REQ_FSTAT)
129	{	532	{
130	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	533	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
131	PL_laststatval = req->result;	534	PL_laststatval = req->result;
132	PL_statcache = *(req->statdata);	535	PL_statcache = *(req->statdata);
133
134	Safefree (req->statdata);
135	}	536	}
136		537
137	ENTER;	538	req_invoke (req);
138	PUSHMARK (SP);
139	XPUSHs (sv_2mortal (newSViv (req->result)));
140		539
141	if (req->type == REQ_OPEN)
142	{
143	/* convert fd to fh */
144	SV *fh;
145
146	PUTBACK;
147	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
148	SPAGAIN;
149
150	fh = SvREFCNT_inc (POPs);
151
152	PUSHMARK (SP);
153	XPUSHs (sv_2mortal (fh));
154	}
155
156	if (SvOK (req->callback))
157	{
158	PUTBACK;
159	call_sv (req->callback, G_VOID | G_EVAL);
160	SPAGAIN;
161	}
162
163	LEAVE;
164
165	if (req->callback)
166	SvREFCNT_dec (req->callback);
167
168	errno = errorno;
169	count++;	540	count++;
170	}	541	}
171		542
172	prv = req;
173	req = req->next;
174	Safefree (prv);	543	req_free (req);
175
176	/* TODO: croak on errors? */
177	}	544	}
178		545
179	return count;	546	return count;
180	}	547	}
181		548
182	static void *aio_proc(void *arg);	549	static void *aio_proc(void *arg);
183		550
184	static void
185	start_thread (void)	551	static void start_thread (void)
186	{	552	{
		553	worker *wrk = calloc (1, sizeof (worker));
		554
		555	if (!wrk)
		556	croak ("unable to allocate worker thread data");
		557
187	sigset_t fullsigset, oldsigset;	558	sigset_t fullsigset, oldsigset;
188	pthread_t tid;
189	pthread_attr_t attr;	559	pthread_attr_t attr;
190		560
191	pthread_attr_init (&attr);	561	pthread_attr_init (&attr);
192	pthread_attr_setstacksize (&attr, STACKSIZE);	562	pthread_attr_setstacksize (&attr, STACKSIZE);
193	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);	563	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
194		564
195	sigfillset (&fullsigset);	565	sigfillset (&fullsigset);
		566
		567	LOCK (wrklock);
196	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);	568	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
197		569
198	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;
199	started++;	576	started++;
		577	}
		578	else
		579	free (wrk);
200		580
201	sigprocmask (SIG_SETMASK, &oldsigset, 0);	581	sigprocmask (SIG_SETMASK, &oldsigset, 0);
		582	UNLOCK (wrklock);
202	}	583	}
203		584
204	static void	585	static void req_send (aio_req req)
205	send_req (aio_req req)
206	{	586	{
		587	while (started < wanted && nreqs >= started)
		588	start_thread ();
		589
207	nreqs++;	590	++nreqs;
208		591
209	pthread_mutex_lock (&reqlock);	592	LOCK (reqlock);
210		593	reqq_push (&req_queue, req);
211	req->next = 0;
212
213	if (reqe)
214	{
215	reqe->next = req;
216	reqe = req;
217	}
218	else
219	reqe = reqs = req;
220
221	pthread_cond_signal (&reqwait);	594	pthread_cond_signal (&reqwait);
222	pthread_mutex_unlock (&reqlock);	595	UNLOCK (reqlock);
223		596
224	while (nreqs > max_outstanding)	597	if (nreqs > max_outstanding)
		598	for (;;)
		599	{
		600	poll_cb ();
		601
		602	if (nreqs <= max_outstanding)
		603	break;
		604
		605	poll_wait ();
		606	}
		607	}
		608
		609	static void end_thread (void)
		610	{
		611	aio_req req;
		612
		613	Newz (0, req, 1, aio_cb);
		614
		615	req->type = REQ_QUIT;
		616	req->pri = PRI_MAX + PRI_BIAS;
		617
		618	req_send (req);
		619	}
		620
		621	static void min_parallel (int nthreads)
		622	{
		623	if (wanted < nthreads)
		624	wanted = nthreads;
		625	}
		626
		627	static void max_parallel (int nthreads)
		628	{
		629	int cur = started;
		630
		631	if (wanted > nthreads)
		632	wanted = nthreads;
		633
		634	while (cur > wanted)
		635	{
		636	end_thread ();
		637	cur--;
		638	}
		639
		640	while (started > wanted)
225	{	641	{
226	poll_wait ();	642	poll_wait ();
227	poll_cb ();	643	poll_cb ();
228	}	644	}
229	}	645	}
230		646
231	static void	647	static void create_pipe ()
232	end_thread (void)
233	{	648	{
234	aio_req req;	649	if (pipe (respipe))
235	New (0, req, 1, aio_cb);	650	croak ("unable to initialize result pipe");
236	req->type = REQ_QUIT;
237		651
238	send_req (req);	652	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
239	}	653	croak ("cannot set result pipe to nonblocking mode");
240		654
241		655	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
242	static void min_parallel (int nthreads)	656	croak ("cannot set result pipe to nonblocking mode");
243	{
244	while (nthreads > started)
245	start_thread ();
246	}
247
248	static void max_parallel (int nthreads)
249	{
250	int cur = started;
251	while (cur > nthreads)
252	{
253	end_thread ();
254	cur--;
255	}
256
257	while (started > nthreads)
258	{
259	poll_wait ();
260	poll_cb ();
261	}
262	}
263
264	static int fork_started;
265
266	static void atfork_prepare (void)
267	{
268	pthread_mutex_lock (&frklock);
269
270	fork_started = started;
271
272	for (;;) {
273	while (nreqs)
274	{
275	poll_wait ();
276	poll_cb ();
277	}
278
279	max_parallel (0);
280
281	pthread_mutex_lock (&reqlock);
282
283	if (!nreqs && !started)
284	break;
285
286	pthread_mutex_unlock (&reqlock);
287
288	min_parallel (fork_started);
289	}
290
291	pthread_mutex_lock (&reslock);
292
293	assert (!started);
294	assert (!nreqs);
295	assert (!reqs && !reqe);
296	assert (!ress && !rese);
297	}
298
299	static void atfork_parent (void)
300	{
301	pthread_mutex_unlock (&reslock);
302	min_parallel (fork_started);
303	pthread_mutex_unlock (&reqlock);
304	pthread_mutex_unlock (&frklock);
305	}
306
307	static void atfork_child (void)
308	{
309	reqs = reqe = 0;
310
311	atfork_parent ();
312	}	657	}
313		658
314	/*****************************************************************************/	659	/*****************************************************************************/
315	/* work around various missing functions */	660	/* work around various missing functions */
316		661
…		…
321	/*	666	/*
322	* make our pread/pwrite safe against themselves, but not against	667	* make our pread/pwrite safe against themselves, but not against
323	* 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,
324	* but that's your problem, not mine.	669	* but that's your problem, not mine.
325	*/	670	*/
326	static pthread_mutex_t iolock = PTHREAD_MUTEX_INITIALIZER;	671	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
327		672
328	static ssize_t	673	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
329	pread (int fd, void *buf, size_t count, off_t offset)
330	{	674	{
331	ssize_t res;	675	ssize_t res;
332	off_t ooffset;	676	off_t ooffset;
333		677
334	pthread_mutex_lock (&iolock);	678	LOCK (preadwritelock);
335	ooffset = lseek (fd, 0, SEEK_CUR);	679	ooffset = lseek (fd, 0, SEEK_CUR);
336	lseek (fd, offset, SEEK_SET);	680	lseek (fd, offset, SEEK_SET);
337	res = read (fd, buf, count);	681	res = read (fd, buf, count);
338	lseek (fd, ooffset, SEEK_SET);	682	lseek (fd, ooffset, SEEK_SET);
339	pthread_mutex_unlock (&iolock);	683	UNLOCK (preadwritelock);
340		684
341	return res;	685	return res;
342	}	686	}
343		687
344	static ssize_t
345	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)
346	{	689	{
347	ssize_t res;	690	ssize_t res;
348	off_t ooffset;	691	off_t ooffset;
349		692
350	pthread_mutex_lock (&iolock);	693	LOCK (preadwritelock);
351	ooffset = lseek (fd, 0, SEEK_CUR);	694	ooffset = lseek (fd, 0, SEEK_CUR);
352	lseek (fd, offset, SEEK_SET);	695	lseek (fd, offset, SEEK_SET);
353	res = write (fd, buf, count);	696	res = write (fd, buf, count);
354	lseek (fd, offset, SEEK_SET);	697	lseek (fd, offset, SEEK_SET);
355	pthread_mutex_unlock (&iolock);	698	UNLOCK (preadwritelock);
356		699
357	return res;	700	return res;
358	}	701	}
359	#endif	702	#endif
360		703
…		…
363	#endif	706	#endif
364		707
365	#if !HAVE_READAHEAD	708	#if !HAVE_READAHEAD
366	# define readahead aio_readahead	709	# define readahead aio_readahead
367		710
368	static char readahead_buf[4096];
369
370	static ssize_t
371	readahead (int fd, off_t offset, size_t count)	711	static ssize_t readahead (int fd, off_t offset, size_t count)
372	{	712	{
		713	dBUF;
		714
373	while (count > 0)	715	while (count > 0)
374	{	716	{
375	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);	717	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
376		718
377	pread (fd, readahead_buf, len, offset);	719	pread (fd, aio_buf, len, offset);
378	offset += len;	720	offset += len;
379	count -= len;	721	count -= len;
380	}	722	}
381		723
382	errno = 0;	724	errno = 0;
383	}	725	}
384	#endif	726	#endif
385		727
		728	#if !HAVE_READDIR_R
		729	# define readdir_r aio_readdir_r
		730
		731	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
		732
		733	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
		734	{
		735	struct dirent *e;
		736	int errorno;
		737
		738	LOCK (readdirlock);
		739
		740	e = readdir (dirp);
		741	errorno = errno;
		742
		743	if (e)
		744	{
		745	*res = ent;
		746	strcpy (ent->d_name, e->d_name);
		747	}
		748	else
		749	*res = 0;
		750
		751	UNLOCK (readdirlock);
		752
		753	errno = errorno;
		754	return e ? 0 : -1;
		755	}
		756	#endif
		757
		758	/* sendfile always needs emulation */
		759	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
		760	{
		761	ssize_t res;
		762
		763	if (!count)
		764	return 0;
		765
		766	#if HAVE_SENDFILE
		767	# if __linux
		768	res = sendfile (ofd, ifd, &offset, count);
		769
		770	# elif __freebsd
		771	/*
		772	* Of course, the freebsd sendfile is a dire hack with no thoughts
		773	* wasted on making it similar to other I/O functions.
		774	*/
		775	{
		776	off_t sbytes;
		777	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
		778
		779	if (res < 0 && sbytes)
		780	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
		781	res = sbytes;
		782	}
		783
		784	# elif __hpux
		785	res = sendfile (ofd, ifd, offset, count, 0, 0);
		786
		787	# elif __solaris
		788	{
		789	struct sendfilevec vec;
		790	size_t sbytes;
		791
		792	vec.sfv_fd = ifd;
		793	vec.sfv_flag = 0;
		794	vec.sfv_off = offset;
		795	vec.sfv_len = count;
		796
		797	res = sendfilev (ofd, &vec, 1, &sbytes);
		798
		799	if (res < 0 && sbytes)
		800	res = sbytes;
		801	}
		802
		803	# endif
		804	#else
		805	res = -1;
		806	errno = ENOSYS;
		807	#endif
		808
		809	if (res < 0
		810	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
		811	#if __solaris
		812	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
		813	#endif
		814	)
		815	)
		816	{
		817	/* emulate sendfile. this is a major pain in the ass */
		818	dBUF;
		819
		820	res = 0;
		821
		822	while (count)
		823	{
		824	ssize_t cnt;
		825
		826	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
		827
		828	if (cnt <= 0)
		829	{
		830	if (cnt && !res) res = -1;
		831	break;
		832	}
		833
		834	cnt = write (ofd, aio_buf, cnt);
		835
		836	if (cnt <= 0)
		837	{
		838	if (cnt && !res) res = -1;
		839	break;
		840	}
		841
		842	offset += cnt;
		843	res += cnt;
		844	count -= cnt;
		845	}
		846	}
		847
		848	return res;
		849	}
		850
		851	/* read a full directory */
		852	static void scandir_ (aio_req req, worker *self)
		853	{
		854	DIR *dirp;
		855	union
		856	{
		857	struct dirent d;
		858	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
		859	} *u;
		860	struct dirent *entp;
		861	char *name, *names;
		862	int memlen = 4096;
		863	int memofs = 0;
		864	int res = 0;
		865	int errorno;
		866
		867	LOCK (wrklock);
		868	self->dirp = dirp = opendir (req->dataptr);
		869	self->dbuf = u = malloc (sizeof (*u));
		870	UNLOCK (wrklock);
		871
		872	req->data2ptr = names = malloc (memlen);
		873
		874	if (dirp && u && names)
		875	for (;;)
		876	{
		877	errno = 0;
		878	readdir_r (dirp, &u->d, &entp);
		879
		880	if (!entp)
		881	break;
		882
		883	name = entp->d_name;
		884
		885	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
		886	{
		887	int len = strlen (name) + 1;
		888
		889	res++;
		890
		891	while (memofs + len > memlen)
		892	{
		893	memlen *= 2;
		894	LOCK (wrklock);
		895	req->data2ptr = names = realloc (names, memlen);
		896	UNLOCK (wrklock);
		897
		898	if (!names)
		899	break;
		900	}
		901
		902	memcpy (names + memofs, name, len);
		903	memofs += len;
		904	}
		905	}
		906
		907	if (errno)
		908	res = -1;
		909
		910	req->result = res;
		911	}
		912
386	/*****************************************************************************/	913	/*****************************************************************************/
387		914
388	static void *
389	aio_proc (void *thr_arg)	915	static void *aio_proc (void *thr_arg)
390	{	916	{
391	aio_req req;	917	aio_req req;
392	int type;	918	int type;
		919	worker *self = (worker *)thr_arg;
393		920
394	do	921	do
395	{	922	{
396	pthread_mutex_lock (&reqlock);	923	LOCK (reqlock);
397		924
398	for (;;)	925	for (;;)
399	{	926	{
400	req = reqs;	927	self->req = req = reqq_shift (&req_queue);
401
402	if (reqs)
403	{
404	reqs = reqs->next;
405	if (!reqs) reqe = 0;
406	}
407		928
408	if (req)	929	if (req)
409	break;	930	break;
410		931
411	pthread_cond_wait (&reqwait, &reqlock);	932	pthread_cond_wait (&reqwait, &reqlock);
412	}	933	}
413		934
414	pthread_mutex_unlock (&reqlock);	935	UNLOCK (reqlock);
415		936
416	errno = 0; /* strictly unnecessary */	937	errno = 0; /* strictly unnecessary */
		938	type = req->type; /* remember type for QUIT check */
417		939
418	type = req->type;	940	if (!(req->flags & FLAG_CANCELLED))
419
420	switch (type)	941	switch (type)
421	{	942	{
422	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;
423	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;
424		945
425	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;
		947	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length, self); break;
426		948
427	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	949	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
428	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	950	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
429	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	951	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
430		952
431	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;
432	case REQ_CLOSE: req->result = close (req->fd); break;	954	case REQ_CLOSE: req->result = close (req->fd); break;
433	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	955	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
434	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;
435	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;	959	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
436		960
437	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	961	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
438	case REQ_FSYNC: req->result = fsync (req->fd); break;	962	case REQ_FSYNC: req->result = fsync (req->fd); break;
		963	case REQ_READDIR: scandir_ (req, self); break;
439		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:
440	case REQ_QUIT:	977	case REQ_QUIT:
441	break;	978	break;
442		979
443	default:	980	default:
444	req->result = ENOSYS;	981	req->result = ENOSYS;
445	break;	982	break;
446	}	983	}
447		984
448	req->errorno = errno;	985	req->errorno = errno;
449		986
450	pthread_mutex_lock (&reslock);	987	LOCK (reslock);
451		988
452	req->next = 0;	989	if (!reqq_push (&res_queue, req))
453
454	if (rese)
455	{
456	rese->next = req;
457	rese = req;
458	}
459	else
460	{
461	rese = ress = req;
462
463	/* write a dummy byte to the pipe so fh becomes ready */	990	/* write a dummy byte to the pipe so fh becomes ready */
464	write (respipe [1], &respipe, 1);	991	write (respipe [1], &respipe, 1);
465	}
466		992
467	pthread_mutex_unlock (&reslock);	993	self->req = 0;
		994	worker_clear (self);
		995
		996	UNLOCK (reslock);
468	}	997	}
469	while (type != REQ_QUIT);	998	while (type != REQ_QUIT);
470		999
		1000	LOCK (wrklock);
		1001	worker_free (self);
		1002	UNLOCK (wrklock);
		1003
471	return 0;	1004	return 0;
		1005	}
		1006
		1007	/*****************************************************************************/
		1008
		1009	static void atfork_prepare (void)
		1010	{
		1011	LOCK (wrklock);
		1012	LOCK (reqlock);
		1013	LOCK (reslock);
		1014	#if !HAVE_PREADWRITE
		1015	LOCK (preadwritelock);
		1016	#endif
		1017	#if !HAVE_READDIR_R
		1018	LOCK (readdirlock);
		1019	#endif
		1020	}
		1021
		1022	static void atfork_parent (void)
		1023	{
		1024	#if !HAVE_READDIR_R
		1025	UNLOCK (readdirlock);
		1026	#endif
		1027	#if !HAVE_PREADWRITE
		1028	UNLOCK (preadwritelock);
		1029	#endif
		1030	UNLOCK (reslock);
		1031	UNLOCK (reqlock);
		1032	UNLOCK (wrklock);
		1033	}
		1034
		1035	static void atfork_child (void)
		1036	{
		1037	aio_req prv;
		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
		1056	started = 0;
		1057	nreqs = 0;
		1058
		1059	close (respipe [0]);
		1060	close (respipe [1]);
		1061	create_pipe ();
		1062
		1063	atfork_parent ();
472	}	1064	}
473		1065
474	#define dREQ \	1066	#define dREQ \
475	aio_req req; \	1067	aio_req req; \
		1068	int req_pri = next_pri; \
		1069	next_pri = DEFAULT_PRI + PRI_BIAS; \
476	\	1070	\
477	if (SvOK (callback) && !SvROK (callback)) \	1071	if (SvOK (callback) && !SvROK (callback)) \
478	croak ("clalback must be undef or of reference type"); \	1072	croak ("callback must be undef or of reference type"); \
479	\	1073	\
480	Newz (0, req, 1, aio_cb); \	1074	Newz (0, req, 1, aio_cb); \
481	if (!req) \	1075	if (!req) \
482	croak ("out of memory during aio_req allocation"); \	1076	croak ("out of memory during aio_req allocation"); \
483	\	1077	\
484	req->callback = SvREFCNT_inc (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));
485		1086
486	MODULE = IO::AIO PACKAGE = IO::AIO	1087	MODULE = IO::AIO PACKAGE = IO::AIO
487		1088
488	PROTOTYPES: ENABLE	1089	PROTOTYPES: ENABLE
489		1090
490	BOOT:	1091	BOOT:
491	{	1092	{
492	if (pipe (respipe))	1093	HV *stash = gv_stashpv ("IO::AIO", 1);
493	croak ("unable to initialize result pipe");	1094	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
		1095	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
		1096	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
494		1097
495	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))	1098	create_pipe ();
496	croak ("cannot set result pipe to nonblocking mode");
497
498	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
499	croak ("cannot set result pipe to nonblocking mode");
500
501	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	1099	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
502	}	1100	}
503		1101
504	void	1102	void
505	min_parallel(nthreads)	1103	min_parallel (nthreads)
506	int nthreads	1104	int nthreads
507	PROTOTYPE: $	1105	PROTOTYPE: $
508		1106
509	void	1107	void
510	max_parallel(nthreads)	1108	max_parallel (nthreads)
511	int nthreads	1109	int nthreads
512	PROTOTYPE: $	1110	PROTOTYPE: $
513		1111
514	int	1112	int
515	max_outstanding(nreqs)	1113	max_outstanding (nreqs)
516	int nreqs	1114	int nreqs
517	PROTOTYPE: $	1115	PROTOTYPE: $
518	CODE:	1116	CODE:
519	RETVAL = max_outstanding;	1117	RETVAL = max_outstanding;
520	max_outstanding = nreqs;	1118	max_outstanding = nreqs;
521		1119
522	void	1120	void
523	aio_open(pathname,flags,mode,callback=&PL_sv_undef)	1121	aio_open (pathname,flags,mode,callback=&PL_sv_undef)
524	SV * pathname	1122	SV * pathname
525	int flags	1123	int flags
526	int mode	1124	int mode
527	SV * callback	1125	SV * callback
528	PROTOTYPE: $$$;$	1126	PROTOTYPE: $$$;$
529	CODE:	1127	PPCODE:
530	{	1128	{
531	dREQ;	1129	dREQ;
532		1130
533	req->type = REQ_OPEN;	1131	req->type = REQ_OPEN;
534	req->data = newSVsv (pathname);	1132	req->data = newSVsv (pathname);
535	req->dataptr = SvPVbyte_nolen (req->data);	1133	req->dataptr = SvPVbyte_nolen (req->data);
536	req->fd = flags;	1134	req->fd = flags;
537	req->mode = mode;	1135	req->mode = mode;
538		1136
539	send_req (req);	1137	REQ_SEND;
540	}	1138	}
541		1139
542	void	1140	void
543	aio_close(fh,callback=&PL_sv_undef)	1141	aio_close (fh,callback=&PL_sv_undef)
544	SV * fh	1142	SV * fh
545	SV * callback	1143	SV * callback
546	PROTOTYPE: $;$	1144	PROTOTYPE: $;$
547	ALIAS:	1145	ALIAS:
548	aio_close = REQ_CLOSE	1146	aio_close = REQ_CLOSE
549	aio_fsync = REQ_FSYNC	1147	aio_fsync = REQ_FSYNC
550	aio_fdatasync = REQ_FDATASYNC	1148	aio_fdatasync = REQ_FDATASYNC
551	CODE:	1149	PPCODE:
552	{	1150	{
553	dREQ;	1151	dREQ;
554		1152
555	req->type = ix;	1153	req->type = ix;
556	req->fh = newSVsv (fh);	1154	req->fh = newSVsv (fh);
557	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1155	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
558		1156
559	send_req (req);	1157	REQ_SEND (req);
560	}	1158	}
561		1159
562	void	1160	void
563	aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1161	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
564	SV * fh	1162	SV * fh
565	UV offset	1163	UV offset
566	IV length	1164	UV length
567	SV * data	1165	SV * data
568	IV dataoffset	1166	UV dataoffset
569	SV * callback	1167	SV * callback
570	ALIAS:	1168	ALIAS:
571	aio_read = REQ_READ	1169	aio_read = REQ_READ
572	aio_write = REQ_WRITE	1170	aio_write = REQ_WRITE
573	PROTOTYPE: $$$$$;$	1171	PROTOTYPE: $$$$$;$
574	CODE:	1172	PPCODE:
575	{	1173	{
576	aio_req req;	1174	aio_req req;
577	STRLEN svlen;	1175	STRLEN svlen;
578	char *svptr = SvPVbyte (data, svlen);	1176	char *svptr = SvPVbyte (data, svlen);
579		1177
…		…
610	: IoOFP (sv_2io (fh)));	1208	: IoOFP (sv_2io (fh)));
611	req->offset = offset;	1209	req->offset = offset;
612	req->length = length;	1210	req->length = length;
613	req->data = SvREFCNT_inc (data);	1211	req->data = SvREFCNT_inc (data);
614	req->dataptr = (char *)svptr + dataoffset;	1212	req->dataptr = (char *)svptr + dataoffset;
615	req->callback = SvREFCNT_inc (callback);
616		1213
617	send_req (req);	1214	if (!SvREADONLY (data))
		1215	{
		1216	SvREADONLY_on (data);
		1217	req->data2ptr = (void *)data;
		1218	}
		1219
		1220	REQ_SEND;
618	}	1221	}
619	}	1222	}
620		1223
621	void	1224	void
		1225	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)
		1226	SV * out_fh
		1227	SV * in_fh
		1228	UV in_offset
		1229	UV length
		1230	SV * callback
		1231	PROTOTYPE: $$$$;$
		1232	PPCODE:
		1233	{
		1234	dREQ;
		1235
		1236	req->type = REQ_SENDFILE;
		1237	req->fh = newSVsv (out_fh);
		1238	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
		1239	req->fh2 = newSVsv (in_fh);
		1240	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
		1241	req->offset = in_offset;
		1242	req->length = length;
		1243
		1244	REQ_SEND;
		1245	}
		1246
		1247	void
622	aio_readahead(fh,offset,length,callback=&PL_sv_undef)	1248	aio_readahead (fh,offset,length,callback=&PL_sv_undef)
623	SV * fh	1249	SV * fh
624	UV offset	1250	UV offset
625	IV length	1251	IV length
626	SV * callback	1252	SV * callback
627	PROTOTYPE: $$$;$	1253	PROTOTYPE: $$$;$
628	CODE:	1254	PPCODE:
629	{	1255	{
630	dREQ;	1256	dREQ;
631		1257
632	req->type = REQ_READAHEAD;	1258	req->type = REQ_READAHEAD;
633	req->fh = newSVsv (fh);	1259	req->fh = newSVsv (fh);
634	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1260	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
635	req->offset = offset;	1261	req->offset = offset;
636	req->length = length;	1262	req->length = length;
637		1263
638	send_req (req);	1264	REQ_SEND;
639	}	1265	}
640		1266
641	void	1267	void
642	aio_stat(fh_or_path,callback=&PL_sv_undef)	1268	aio_stat (fh_or_path,callback=&PL_sv_undef)
643	SV * fh_or_path	1269	SV * fh_or_path
644	SV * callback	1270	SV * callback
645	ALIAS:	1271	ALIAS:
646	aio_stat = REQ_STAT	1272	aio_stat = REQ_STAT
647	aio_lstat = REQ_LSTAT	1273	aio_lstat = REQ_LSTAT
648	CODE:	1274	PPCODE:
649	{	1275	{
650	dREQ;	1276	dREQ;
651		1277
652	New (0, req->statdata, 1, Stat_t);	1278	New (0, req->statdata, 1, Stat_t);
653	if (!req->statdata)	1279	if (!req->statdata)
		1280	{
		1281	req_free (req);
654	croak ("out of memory during aio_req->statdata allocation (sorry, i just leaked memory, too)");	1282	croak ("out of memory during aio_req->statdata allocation");
		1283	}
655		1284
656	if (SvPOK (fh_or_path))	1285	if (SvPOK (fh_or_path))
657	{	1286	{
658	req->type = ix;	1287	req->type = ix;
659	req->data = newSVsv (fh_or_path);	1288	req->data = newSVsv (fh_or_path);
…		…
664	req->type = REQ_FSTAT;	1293	req->type = REQ_FSTAT;
665	req->fh = newSVsv (fh_or_path);	1294	req->fh = newSVsv (fh_or_path);
666	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1295	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
667	}	1296	}
668		1297
669	send_req (req);	1298	REQ_SEND;
670	}	1299	}
671		1300
672	void	1301	void
673	aio_unlink(pathname,callback=&PL_sv_undef)	1302	aio_unlink (pathname,callback=&PL_sv_undef)
674	SV * pathname	1303	SV * pathname
675	SV * callback	1304	SV * callback
676	ALIAS:	1305	ALIAS:
677	aio_unlink = REQ_UNLINK	1306	aio_unlink = REQ_UNLINK
678	aio_rmdir = REQ_RMDIR	1307	aio_rmdir = REQ_RMDIR
		1308	aio_readdir = REQ_READDIR
679	CODE:	1309	PPCODE:
680	{	1310	{
681	dREQ;	1311	dREQ;
682		1312
683	req->type = ix;	1313	req->type = ix;
684	req->data = newSVsv (pathname);	1314	req->data = newSVsv (pathname);
685	req->dataptr = SvPVbyte_nolen (req->data);	1315	req->dataptr = SvPVbyte_nolen (req->data);
686		1316
687	send_req (req);	1317	REQ_SEND;
688	}	1318	}
689		1319
690	void	1320	void
691	aio_symlink(oldpath,newpath,callback=&PL_sv_undef)	1321	aio_link (oldpath,newpath,callback=&PL_sv_undef)
692	SV * oldpath	1322	SV * oldpath
693	SV * newpath	1323	SV * newpath
694	SV * callback	1324	SV * callback
		1325	ALIAS:
		1326	aio_link = REQ_LINK
		1327	aio_symlink = REQ_SYMLINK
		1328	aio_rename = REQ_RENAME
695	CODE:	1329	PPCODE:
696	{	1330	{
697	dREQ;	1331	dREQ;
698		1332
699	req->type = REQ_SYMLINK;	1333	req->type = ix;
700	req->fh = newSVsv (oldpath);	1334	req->fh = newSVsv (oldpath);
701	req->data2ptr = SvPVbyte_nolen (req->fh);	1335	req->data2ptr = SvPVbyte_nolen (req->fh);
702	req->data = newSVsv (newpath);	1336	req->data = newSVsv (newpath);
703	req->dataptr = SvPVbyte_nolen (req->data);	1337	req->dataptr = SvPVbyte_nolen (req->data);
704		1338
705	send_req (req);	1339	REQ_SEND;
706	}	1340	}
707		1341
708	void	1342	void
		1343	aio_busy (delay,callback=&PL_sv_undef)
		1344	double delay
		1345	SV * callback
		1346	PPCODE:
		1347	{
		1348	dREQ;
		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
		1365	req->type = REQ_GROUP;
		1366	req_send (req);
		1367
		1368	XPUSHs (req_sv (req, AIO_GRP_KLASS));
		1369	}
		1370
		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
709	flush()	1399	flush ()
710	PROTOTYPE:	1400	PROTOTYPE:
711	CODE:	1401	CODE:
712	while (nreqs)	1402	while (nreqs)
713	{	1403	{
714	poll_wait ();	1404	poll_wait ();
…		…
754	CODE:	1444	CODE:
755	RETVAL = nreqs;	1445	RETVAL = nreqs;
756	OUTPUT:	1446	OUTPUT:
757	RETVAL	1447	RETVAL
758		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