[ViewVC] Diff of: cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.32 by root, Mon Aug 22 23:20:37 2005 UTC vs.
Revision 1.64 by root, Mon Oct 23 23:54:41 2006 UTC

…		…
		1	#if __linux
		2	# define _GNU_SOURCE
		3	#endif
		4
1	#define _REENTRANT 1	5	#define _REENTRANT 1
		6
2	#include <errno.h>	7	#include <errno.h>
3		8
4	#include "EXTERN.h"	9	#include "EXTERN.h"
5	#include "perl.h"	10	#include "perl.h"
6	#include "XSUB.h"	11	#include "XSUB.h"
7		12
8	#include "autoconf/config.h"	13	#include "autoconf/config.h"
9		14
10	#include <pthread.h>	15	#include <pthread.h>
11		16
		17	#include <stddef.h>
		18	#include <errno.h>
		19	#include <sys/time.h>
		20	#include <sys/select.h>
12	#include <sys/types.h>	21	#include <sys/types.h>
13	#include <sys/stat.h>	22	#include <sys/stat.h>
14		23	#include <limits.h>
15	#include <unistd.h>	24	#include <unistd.h>
16	#include <fcntl.h>	25	#include <fcntl.h>
17	#include <signal.h>	26	#include <signal.h>
18	#include <sched.h>	27	#include <sched.h>
19		28
23	# elif __freebsd	32	# elif __freebsd
24	# include <sys/socket.h>	33	# include <sys/socket.h>
25	# include <sys/uio.h>	34	# include <sys/uio.h>
26	# elif __hpux	35	# elif __hpux
27	# include <sys/socket.h>	36	# include <sys/socket.h>
		37	# elif __solaris /* not yet */
		38	# include <sys/sendfile.h>
		39	# else
		40	# error sendfile support requested but not available
28	# endif	41	# endif
		42	#endif
		43
		44	/* used for struct dirent, AIX doesn't provide it */
		45	#ifndef NAME_MAX
		46	# define NAME_MAX 4096
29	#endif	47	#endif
30		48
31	#if __ia64	49	#if __ia64
32	# define STACKSIZE 65536	50	# define STACKSIZE 65536
33	#else	51	#else
34	# define STACKSIZE 4096	52	# define STACKSIZE 8192
35	#endif	53	#endif
36		54
37	enum {	55	enum {
38	REQ_QUIT,	56	REQ_QUIT,
39	REQ_OPEN, REQ_CLOSE,	57	REQ_OPEN, REQ_CLOSE,
40	REQ_READ, REQ_WRITE, REQ_READAHEAD,	58	REQ_READ, REQ_WRITE, REQ_READAHEAD,
41	REQ_SENDFILE,	59	REQ_SENDFILE,
42	REQ_STAT, REQ_LSTAT, REQ_FSTAT,	60	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
43	REQ_FSYNC, REQ_FDATASYNC,	61	REQ_FSYNC, REQ_FDATASYNC,
44	REQ_UNLINK, REQ_RMDIR,	62	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
45	REQ_SYMLINK,	63	REQ_READDIR,
		64	REQ_LINK, REQ_SYMLINK,
		65	REQ_GROUP, REQ_NOP,
		66	REQ_SLEEP,
46	};	67	};
47		68
		69	#define AIO_REQ_KLASS "IO::AIO::REQ"
		70	#define AIO_GRP_KLASS "IO::AIO::GRP"
		71
48	typedef struct aio_cb {	72	typedef struct aio_cb
		73	{
49	struct aio_cb *volatile next;	74	struct aio_cb *volatile next;
50		75
51	int type;	76	SV data, callback;
52		77	SV fh, fh2;
53	int fd, fd2;	78	void dataptr, data2ptr;
		79	Stat_t *statdata;
54	off_t offset;	80	off_t offset;
55	size_t length;	81	size_t length;
56	ssize_t result;	82	ssize_t result;
		83
		84	STRLEN dataoffset;
		85	int type;
		86	int fd, fd2;
		87	int errorno;
57	mode_t mode; /* open */	88	mode_t mode; /* open */
58	int errorno;
59	SV data, callback;
60	SV fh, fh2;
61	void dataptr, data2ptr;
62	STRLEN dataoffset;
63		89
64	Stat_t *statdata;	90	unsigned char flags;
		91	unsigned char pri;
		92
		93	SV self; / the perl counterpart of this request, if any */
		94	struct aio_cb grp, grp_prev, grp_next, grp_first;
65	} aio_cb;	95	} aio_cb;
66		96
		97	enum {
		98	FLAG_CANCELLED = 0x01,
		99	};
		100
67	typedef aio_cb *aio_req;	101	typedef aio_cb *aio_req;
		102	typedef aio_cb *aio_req_ornot;
		103
		104	enum {
		105	PRI_MIN = -4,
		106	PRI_MAX = 4,
		107
		108	DEFAULT_PRI = 0,
		109	PRI_BIAS = -PRI_MIN,
		110	};
		111
		112	static int next_pri = DEFAULT_PRI + PRI_BIAS;
68		113
69	static int started, wanted;	114	static int started, wanted;
70	static volatile int nreqs;	115	static volatile int nreqs;
71	static int max_outstanding = 1<<30;	116	static int max_outstanding = 1<<30;
72	static int respipe [2];	117	static int respipe [2];
73		118
		119	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
		120	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
		121	#else
		122	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
		123	#endif
		124
74	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	125	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
75	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;	126	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
76	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	127	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
77		128
78	static volatile aio_req reqs, reqe; /* queue start, queue end */	129	static volatile aio_req reqs, reqe; /* queue start, queue end */
79	static volatile aio_req ress, rese; /* queue start, queue end */	130	static volatile aio_req ress, rese; /* queue start, queue end */
80		131
		132	static void req_invoke (aio_req req);
81	static void free_req (aio_req req)	133	static void req_free (aio_req req);
82	{
83	if (req->data)
84	SvREFCNT_dec (req->data);
85		134
		135	/* must be called at most once */
		136	static SV req_sv (aio_req req, const char klass)
		137	{
86	if (req->fh)	138	if (!req->self)
87	SvREFCNT_dec (req->fh);	139	{
		140	req->self = (SV *)newHV ();
		141	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
		142	}
88		143
89	if (req->fh2)	144	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));
		145	}
		146
		147	static aio_req SvAIO_REQ (SV *sv)
		148	{
		149	MAGIC *mg;
		150
		151	if (!sv_derived_from (sv, AIO_REQ_KLASS) \|\| !SvROK (sv))
		152	croak ("object of class " AIO_REQ_KLASS " expected");
		153
		154	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
		155
		156	return mg ? (aio_req)mg->mg_ptr : 0;
		157	}
		158
		159	static void aio_grp_feed (aio_req grp)
		160	{
		161	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))
		162	{
		163	int old_len = grp->length;
		164
		165	if (grp->fh2 && SvOK (grp->fh2))
		166	{
		167	dSP;
		168
		169	ENTER;
		170	SAVETMPS;
		171	PUSHMARK (SP);
		172	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
		173	PUTBACK;
		174	call_sv (grp->fh2, G_VOID \| G_EVAL);
		175	SPAGAIN;
		176	FREETMPS;
		177	LEAVE;
		178	}
		179
		180	/* stop if no progress has been made */
		181	if (old_len == grp->length)
		182	{
90	SvREFCNT_dec (req->fh2);	183	SvREFCNT_dec (grp->fh2);
91		184	grp->fh2 = 0;
92	if (req->statdata)	185	break;
93	Safefree (req->statdata);	186	}
94
95	if (req->callback)
96	SvREFCNT_dec (req->callback);
97
98	Safefree (req);
99	}
100
101	static void
102	poll_wait ()
103	{
104	if (nreqs && !ress)
105	{	187	}
		188	}
		189
		190	static void aio_grp_dec (aio_req grp)
		191	{
		192	--grp->length;
		193
		194	/* call feeder, if applicable */
		195	aio_grp_feed (grp);
		196
		197	/* finish, if done */
		198	if (!grp->length && grp->fd)
		199	{
		200	req_invoke (grp);
		201	req_free (grp);
		202	}
		203	}
		204
		205	static void poll_wait ()
		206	{
106	fd_set rfd;	207	fd_set rfd;
		208
		209	while (nreqs)
		210	{
		211	aio_req req;
		212	#if !(__x86 \|\| __x86_64) /* safe without sempahore on this archs */
		213	pthread_mutex_lock (&reslock);
		214	#endif
		215	req = ress;
		216	#if !(__x86 \|\| __x86_64) /* safe without sempahore on this archs */
		217	pthread_mutex_unlock (&reslock);
		218	#endif
		219
		220	if (req)
		221	return;
		222
107	FD_ZERO(&rfd);	223	FD_ZERO(&rfd);
108	FD_SET(respipe [0], &rfd);	224	FD_SET(respipe [0], &rfd);
109		225
110	select (respipe [0] + 1, &rfd, 0, 0, 0);	226	select (respipe [0] + 1, &rfd, 0, 0, 0);
111	}	227	}
112	}	228	}
113		229
114	static int	230	static void req_invoke (aio_req req)
115	poll_cb ()	231	{
		232	dSP;
		233	int errorno = errno;
		234
		235	if (req->flags & FLAG_CANCELLED \|\| !SvOK (req->callback))
		236	return;
		237
		238	errno = req->errorno;
		239
		240	ENTER;
		241	SAVETMPS;
		242	PUSHMARK (SP);
		243	EXTEND (SP, 1);
		244
		245	switch (req->type)
		246	{
		247	case REQ_READDIR:
		248	{
		249	SV *rv = &PL_sv_undef;
		250
		251	if (req->result >= 0)
		252	{
		253	char *buf = req->data2ptr;
		254	AV *av = newAV ();
		255
		256	while (req->result)
		257	{
		258	SV *sv = newSVpv (buf, 0);
		259
		260	av_push (av, sv);
		261	buf += SvCUR (sv) + 1;
		262	req->result--;
		263	}
		264
		265	rv = sv_2mortal (newRV_noinc ((SV *)av));
		266	}
		267
		268	PUSHs (rv);
		269	}
		270	break;
		271
		272	case REQ_OPEN:
		273	{
		274	/* convert fd to fh */
		275	SV *fh;
		276
		277	PUSHs (sv_2mortal (newSViv (req->result)));
		278	PUTBACK;
		279	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);
		280	SPAGAIN;
		281
		282	fh = SvREFCNT_inc (POPs);
		283
		284	PUSHMARK (SP);
		285	XPUSHs (sv_2mortal (fh));
		286	}
		287	break;
		288
		289	case REQ_GROUP:
		290	req->fd = 2; /* mark group as finished */
		291
		292	if (req->data)
		293	{
		294	int i;
		295	AV av = (AV )req->data;
		296
		297	EXTEND (SP, AvFILL (av) + 1);
		298	for (i = 0; i <= AvFILL (av); ++i)
		299	PUSHs (*av_fetch (av, i, 0));
		300	}
		301	break;
		302
		303	case REQ_NOP:
		304	case REQ_SLEEP:
		305	break;
		306
		307	default:
		308	PUSHs (sv_2mortal (newSViv (req->result)));
		309	break;
		310	}
		311
		312
		313	PUTBACK;
		314	call_sv (req->callback, G_VOID \| G_EVAL);
		315	SPAGAIN;
		316
		317	FREETMPS;
		318	LEAVE;
		319
		320	errno = errorno;
		321
		322	if (SvTRUE (ERRSV))
		323	{
		324	req_free (req);
		325	croak (0);
		326	}
		327	}
		328
		329	static void req_free (aio_req req)
		330	{
		331	if (req->grp)
		332	{
		333	aio_req grp = req->grp;
		334
		335	/* unlink request */
		336	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
		337	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
		338
		339	if (grp->grp_first == req)
		340	grp->grp_first = req->grp_next;
		341
		342	aio_grp_dec (grp);
		343	}
		344
		345	if (req->self)
		346	{
		347	sv_unmagic (req->self, PERL_MAGIC_ext);
		348	SvREFCNT_dec (req->self);
		349	}
		350
		351	SvREFCNT_dec (req->data);
		352	SvREFCNT_dec (req->fh);
		353	SvREFCNT_dec (req->fh2);
		354	SvREFCNT_dec (req->callback);
		355	Safefree (req->statdata);
		356
		357	if (req->type == REQ_READDIR && req->result >= 0)
		358	free (req->data2ptr);
		359
		360	Safefree (req);
		361	}
		362
		363	static void req_cancel (aio_req req)
		364	{
		365	req->flags \|= FLAG_CANCELLED;
		366
		367	if (req->type == REQ_GROUP)
		368	{
		369	aio_req sub;
		370
		371	for (sub = req->grp_first; sub; sub = sub->grp_next)
		372	req_cancel (sub);
		373	}
		374	}
		375
		376	static int poll_cb ()
116	{	377	{
117	dSP;	378	dSP;
118	int count = 0;	379	int count = 0;
119	int do_croak = 0;	380	int do_croak = 0;
120	aio_req req;	381	aio_req req;
…		…
142	pthread_mutex_unlock (&reslock);	403	pthread_mutex_unlock (&reslock);
143		404
144	if (!req)	405	if (!req)
145	break;	406	break;
146		407
147	nreqs--;	408	--nreqs;
148		409
149	if (req->type == REQ_QUIT)	410	if (req->type == REQ_QUIT)
150	started--;	411	started--;
		412	else if (req->type == REQ_GROUP && req->length)
		413	{
		414	req->fd = 1; /* mark request as delayed */
		415	continue;
		416	}
151	else	417	else
152	{	418	{
153	int errorno = errno;
154	errno = req->errorno;
155
156	if (req->type == REQ_READ)	419	if (req->type == REQ_READ)
157	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));	420	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
158		421
159	if (req->data2ptr && (req->type == REQ_READ \|\| req->type == REQ_WRITE))	422	if (req->data2ptr && (req->type == REQ_READ \|\| req->type == REQ_WRITE))
160	SvREADONLY_off (req->data);	423	SvREADONLY_off (req->data);
…		…
164	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	427	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
165	PL_laststatval = req->result;	428	PL_laststatval = req->result;
166	PL_statcache = *(req->statdata);	429	PL_statcache = *(req->statdata);
167	}	430	}
168		431
169	ENTER;	432	req_invoke (req);
170	PUSHMARK (SP);
171	XPUSHs (sv_2mortal (newSViv (req->result)));
172		433
173	if (req->type == REQ_OPEN)
174	{
175	/* convert fd to fh */
176	SV *fh;
177
178	PUTBACK;
179	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);
180	SPAGAIN;
181
182	fh = SvREFCNT_inc (POPs);
183
184	PUSHMARK (SP);
185	XPUSHs (sv_2mortal (fh));
186	}
187
188	if (SvOK (req->callback))
189	{
190	PUTBACK;
191	call_sv (req->callback, G_VOID \| G_EVAL);
192	SPAGAIN;
193
194	if (SvTRUE (ERRSV))
195	{
196	free_req (req);
197	croak (0);
198	}
199	}
200
201	LEAVE;
202
203	errno = errorno;
204	count++;	434	count++;
205	}	435	}
206		436
207	free_req (req);	437	req_free (req);
208	}	438	}
209		439
210	return count;	440	return count;
211	}	441	}
212		442
213	static void aio_proc(void arg);	443	static void aio_proc(void arg);
214		444
215	static void
216	start_thread (void)	445	static void start_thread (void)
217	{	446	{
218	sigset_t fullsigset, oldsigset;	447	sigset_t fullsigset, oldsigset;
219	pthread_t tid;	448	pthread_t tid;
220	pthread_attr_t attr;	449	pthread_attr_t attr;
221		450
…		…
230	started++;	459	started++;
231		460
232	sigprocmask (SIG_SETMASK, &oldsigset, 0);	461	sigprocmask (SIG_SETMASK, &oldsigset, 0);
233	}	462	}
234		463
235	static void	464	static void req_send (aio_req req)
236	send_req (aio_req req)
237	{	465	{
238	while (started < wanted && nreqs >= started)	466	while (started < wanted && nreqs >= started)
239	start_thread ();	467	start_thread ();
240		468
241	nreqs++;	469	++nreqs;
242		470
243	pthread_mutex_lock (&reqlock);	471	pthread_mutex_lock (&reqlock);
244		472
245	req->next = 0;	473	req->next = 0;
246		474
…		…
265		493
266	poll_wait ();	494	poll_wait ();
267	}	495	}
268	}	496	}
269		497
270	static void	498	static void end_thread (void)
271	end_thread (void)
272	{	499	{
273	aio_req req;	500	aio_req req;
274	Newz (0, req, 1, aio_cb);	501	Newz (0, req, 1, aio_cb);
275	req->type = REQ_QUIT;	502	req->type = REQ_QUIT;
276		503
277	send_req (req);	504	req_send (req);
278	}	505	}
279		506
280	static void min_parallel (int nthreads)	507	static void min_parallel (int nthreads)
281	{	508	{
282	if (wanted < nthreads)	509	if (wanted < nthreads)
…		…
311	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))	538	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
312	croak ("cannot set result pipe to nonblocking mode");	539	croak ("cannot set result pipe to nonblocking mode");
313		540
314	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))	541	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
315	croak ("cannot set result pipe to nonblocking mode");	542	croak ("cannot set result pipe to nonblocking mode");
316	}
317
318	static void atfork_prepare (void)
319	{
320	pthread_mutex_lock (&reqlock);
321	pthread_mutex_lock (&reslock);
322	}
323
324	static void atfork_parent (void)
325	{
326	pthread_mutex_unlock (&reslock);
327	pthread_mutex_unlock (&reqlock);
328	}
329
330	static void atfork_child (void)
331	{
332	aio_req prv;
333
334	started = 0;
335
336	while (reqs)
337	{
338	prv = reqs;
339	reqs = prv->next;
340	free_req (prv);
341	}
342
343	reqs = reqe = 0;
344
345	while (ress)
346	{
347	prv = ress;
348	ress = prv->next;
349	free_req (prv);
350	}
351
352	ress = rese = 0;
353
354	close (respipe [0]);
355	close (respipe [1]);
356	create_pipe ();
357
358	atfork_parent ();
359	}	543	}
360		544
361	/*****************************************************************************/	545	/*****************************************************************************/
362	/* work around various missing functions */	546	/* work around various missing functions */
363		547
…		…
368	/*	552	/*
369	* make our pread/pwrite safe against themselves, but not against	553	* make our pread/pwrite safe against themselves, but not against
370	* normal read/write by using a mutex. slows down execution a lot,	554	* normal read/write by using a mutex. slows down execution a lot,
371	* but that's your problem, not mine.	555	* but that's your problem, not mine.
372	*/	556	*/
373	static pthread_mutex_t iolock = PTHREAD_MUTEX_INITIALIZER;	557	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
374		558
375	static ssize_t	559	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
376	pread (int fd, void *buf, size_t count, off_t offset)
377	{	560	{
378	ssize_t res;	561	ssize_t res;
379	off_t ooffset;	562	off_t ooffset;
380		563
381	pthread_mutex_lock (&iolock);	564	pthread_mutex_lock (&preadwritelock);
382	ooffset = lseek (fd, 0, SEEK_CUR);	565	ooffset = lseek (fd, 0, SEEK_CUR);
383	lseek (fd, offset, SEEK_SET);	566	lseek (fd, offset, SEEK_SET);
384	res = read (fd, buf, count);	567	res = read (fd, buf, count);
385	lseek (fd, ooffset, SEEK_SET);	568	lseek (fd, ooffset, SEEK_SET);
386	pthread_mutex_unlock (&iolock);	569	pthread_mutex_unlock (&preadwritelock);
387		570
388	return res;	571	return res;
389	}	572	}
390		573
391	static ssize_t
392	pwrite (int fd, void *buf, size_t count, off_t offset)	574	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
393	{	575	{
394	ssize_t res;	576	ssize_t res;
395	off_t ooffset;	577	off_t ooffset;
396		578
397	pthread_mutex_lock (&iolock);	579	pthread_mutex_lock (&preadwritelock);
398	ooffset = lseek (fd, 0, SEEK_CUR);	580	ooffset = lseek (fd, 0, SEEK_CUR);
399	lseek (fd, offset, SEEK_SET);	581	lseek (fd, offset, SEEK_SET);
400	res = write (fd, buf, count);	582	res = write (fd, buf, count);
401	lseek (fd, offset, SEEK_SET);	583	lseek (fd, offset, SEEK_SET);
402	pthread_mutex_unlock (&iolock);	584	pthread_mutex_unlock (&preadwritelock);
403		585
404	return res;	586	return res;
405	}	587	}
406	#endif	588	#endif
407		589
…		…
410	#endif	592	#endif
411		593
412	#if !HAVE_READAHEAD	594	#if !HAVE_READAHEAD
413	# define readahead aio_readahead	595	# define readahead aio_readahead
414		596
		597	static ssize_t readahead (int fd, off_t offset, size_t count)
		598	{
415	static char readahead_buf[4096];	599	char readahead_buf[4096];
416		600
417	static ssize_t
418	readahead (int fd, off_t offset, size_t count)
419	{
420	while (count > 0)	601	while (count > 0)
421	{	602	{
422	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);	603	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
423		604
424	pread (fd, readahead_buf, len, offset);	605	pread (fd, readahead_buf, len, offset);
…		…
428		609
429	errno = 0;	610	errno = 0;
430	}	611	}
431	#endif	612	#endif
432		613
		614	#if !HAVE_READDIR_R
		615	# define readdir_r aio_readdir_r
		616
		617	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
		618
		619	static int readdir_r (DIR dirp, struct dirent ent, struct dirent **res)
		620	{
		621	struct dirent *e;
		622	int errorno;
		623
		624	pthread_mutex_lock (&readdirlock);
		625
		626	e = readdir (dirp);
		627	errorno = errno;
		628
		629	if (e)
		630	{
		631	*res = ent;
		632	strcpy (ent->d_name, e->d_name);
		633	}
		634	else
		635	*res = 0;
		636
		637	pthread_mutex_unlock (&readdirlock);
		638
		639	errno = errorno;
		640	return e ? 0 : -1;
		641	}
		642	#endif
		643
433	/* sendfile always needs emulation */	644	/* sendfile always needs emulation */
434	static ssize_t
435	sendfile_ (int ofd, int ifd, off_t offset, size_t count)	645	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count)
436	{	646	{
437	ssize_t res;	647	ssize_t res;
438		648
439	if (!count)	649	if (!count)
440	return 0;	650	return 0;
441		651
		652	#if HAVE_SENDFILE
442	#if __linux	653	# if __linux
443	res = sendfile (ofd, ifd, &offset, count);	654	res = sendfile (ofd, ifd, &offset, count);
444		655
445	#elif __freebsd	656	# elif __freebsd
446	/*	657	/*
447	* Of course, the freebsd sendfile is a dire hack with no thoughts	658	* Of course, the freebsd sendfile is a dire hack with no thoughts
448	* wasted on making it similar to other i/o functions.	659	* wasted on making it similar to other I/O functions.
449	*/	660	*/
450	{	661	{
451	off_t sbytes;	662	off_t sbytes;
452	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);	663	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
453		664
454	if (!res && errno == EAGAIN)	665	if (res < 0 && sbytes)
		666	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
455	res = sbytes;	667	res = sbytes;
456	}	668	}
457		669
458	#elif __hpux	670	# elif __hpux
459	res = sendfile (ofd, ifd, offset, count, 0, 0);	671	res = sendfile (ofd, ifd, offset, count, 0, 0);
460		672
		673	# elif __solaris
		674	{
		675	struct sendfilevec vec;
		676	size_t sbytes;
		677
		678	vec.sfv_fd = ifd;
		679	vec.sfv_flag = 0;
		680	vec.sfv_off = offset;
		681	vec.sfv_len = count;
		682
		683	res = sendfilev (ofd, &vec, 1, &sbytes);
		684
		685	if (res < 0 && sbytes)
		686	res = sbytes;
		687	}
		688
		689	# endif
461	#else	690	#else
462	res = -1;	691	res = -1;
463	errno = ENOSYS;	692	errno = ENOSYS;
464	#endif	693	#endif
465		694
		695	if (res < 0
466	if (res < 0 && (errno == ENOSYS \|\| errno == EINVAL \|\| errno == ENOTSOCK))	696	&& (errno == ENOSYS \|\| errno == EINVAL \|\| errno == ENOTSOCK
		697	#if __solaris
		698	\|\| errno == EAFNOSUPPORT \|\| errno == EPROTOTYPE
		699	#endif
		700	)
		701	)
467	{	702	{
468	/* emulate sendfile. this is a major pain in the ass */	703	/* emulate sendfile. this is a major pain in the ass */
469	char *buf = malloc (4096);	704	char buf[4096];
470	res = 0;	705	res = 0;
471		706
472	for (;;)	707	while (count)
473	{	708	{
474	ssize_t cnt;	709	ssize_t cnt;
475		710
476	cnt = pread (ifd, buf, 4096, offset);	711	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);
477		712
478	if (cnt <= 0)	713	if (cnt <= 0)
479	{	714	{
480	if (cnt && !res) res = -1;	715	if (cnt && !res) res = -1;
481	break;	716	break;
482	}	717	}
483		718
484	cnt = write (ofd, buf, cnt);	719	cnt = write (ofd, buf, cnt);
485		720
486	if (cnt <= 0)	721	if (cnt <= 0)
487	{	722	{
488	if (cnt && !res) res = -1;	723	if (cnt && !res) res = -1;
489	break;	724	break;
490	}	725	}
491		726
492	offset += cnt;	727	offset += cnt;
493	res += cnt;	728	res += cnt;
		729	count -= cnt;
494	}	730	}
495
496	{
497	int errorno = errno;
498	free (buf);
499	errno = errorno;
500	}
501	}	731	}
502		732
503	return res;	733	return res;
		734	}
		735
		736	/* read a full directory */
		737	static int scandir_ (const char path, void *namesp)
		738	{
		739	DIR *dirp = opendir (path);
		740	union
		741	{
		742	struct dirent d;
		743	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
		744	} u;
		745	struct dirent *entp;
		746	char name, names;
		747	int memlen = 4096;
		748	int memofs = 0;
		749	int res = 0;
		750	int errorno;
		751
		752	if (!dirp)
		753	return -1;
		754
		755	names = malloc (memlen);
		756
		757	for (;;)
		758	{
		759	errno = 0, readdir_r (dirp, &u.d, &entp);
		760
		761	if (!entp)
		762	break;
		763
		764	name = entp->d_name;
		765
		766	if (name [0] != '.' \|\| (name [1] && (name [1] != '.' \|\| name [2])))
		767	{
		768	int len = strlen (name) + 1;
		769
		770	res++;
		771
		772	while (memofs + len > memlen)
		773	{
		774	memlen *= 2;
		775	names = realloc (names, memlen);
		776	if (!names)
		777	break;
		778	}
		779
		780	memcpy (names + memofs, name, len);
		781	memofs += len;
		782	}
		783	}
		784
		785	errorno = errno;
		786	closedir (dirp);
		787
		788	if (errorno)
		789	{
		790	free (names);
		791	errno = errorno;
		792	res = -1;
		793	}
		794
		795	namesp = (void )names;
		796	return res;
504	}	797	}
505		798
506	/*****************************************************************************/	799	/*****************************************************************************/
507		800
508	static void *
509	aio_proc (void *thr_arg)	801	static void aio_proc (void thr_arg)
510	{	802	{
511	aio_req req;	803	aio_req req;
512	int type;	804	int type;
513		805
514	do	806	do
…		…
532	}	824	}
533		825
534	pthread_mutex_unlock (&reqlock);	826	pthread_mutex_unlock (&reqlock);
535		827
536	errno = 0; /* strictly unnecessary */	828	errno = 0; /* strictly unnecessary */
		829	type = req->type; /* remember type for QUIT check */
537		830
538	type = req->type;	831	if (!(req->flags & FLAG_CANCELLED))
539
540	switch (type)	832	switch (type)
541	{	833	{
542	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;	834	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
543	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;	835	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
544		836
545	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	837	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
546	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;	838	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
547		839
548	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	840	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
549	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	841	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
550	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	842	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
551		843
552	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;	844	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
553	case REQ_CLOSE: req->result = close (req->fd); break;	845	case REQ_CLOSE: req->result = close (req->fd); break;
554	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	846	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
555	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;	847	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
		848	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
		849	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
556	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;	850	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
557		851
558	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	852	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
559	case REQ_FSYNC: req->result = fsync (req->fd); break;	853	case REQ_FSYNC: req->result = fsync (req->fd); break;
		854	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
560		855
		856	case REQ_SLEEP:
		857	{
		858	struct timeval tv;
		859
		860	tv.tv_sec = req->fd;
		861	tv.tv_usec = req->fd2;
		862
		863	req->result = select (0, 0, 0, 0, &tv);
		864	}
		865
		866	case REQ_GROUP:
		867	case REQ_NOP:
561	case REQ_QUIT:	868	case REQ_QUIT:
562	break;	869	break;
563		870
564	default:	871	default:
565	req->result = ENOSYS;	872	req->result = ENOSYS;
566	break;	873	break;
567	}	874	}
568		875
569	req->errorno = errno;	876	req->errorno = errno;
570		877
571	pthread_mutex_lock (&reslock);	878	pthread_mutex_lock (&reslock);
572		879
…		…
590	while (type != REQ_QUIT);	897	while (type != REQ_QUIT);
591		898
592	return 0;	899	return 0;
593	}	900	}
594		901
		902	/*****************************************************************************/
		903
		904	static void atfork_prepare (void)
		905	{
		906	pthread_mutex_lock (&reqlock);
		907	pthread_mutex_lock (&reslock);
		908	#if !HAVE_PREADWRITE
		909	pthread_mutex_lock (&preadwritelock);
		910	#endif
		911	#if !HAVE_READDIR_R
		912	pthread_mutex_lock (&readdirlock);
		913	#endif
		914	}
		915
		916	static void atfork_parent (void)
		917	{
		918	#if !HAVE_READDIR_R
		919	pthread_mutex_unlock (&readdirlock);
		920	#endif
		921	#if !HAVE_PREADWRITE
		922	pthread_mutex_unlock (&preadwritelock);
		923	#endif
		924	pthread_mutex_unlock (&reslock);
		925	pthread_mutex_unlock (&reqlock);
		926	}
		927
		928	static void atfork_child (void)
		929	{
		930	aio_req prv;
		931
		932	started = 0;
		933
		934	while (reqs)
		935	{
		936	prv = reqs;
		937	reqs = prv->next;
		938	req_free (prv);
		939	}
		940
		941	reqs = reqe = 0;
		942
		943	while (ress)
		944	{
		945	prv = ress;
		946	ress = prv->next;
		947	req_free (prv);
		948	}
		949
		950	ress = rese = 0;
		951
		952	close (respipe [0]);
		953	close (respipe [1]);
		954	create_pipe ();
		955
		956	atfork_parent ();
		957	}
		958
595	#define dREQ \	959	#define dREQ \
596	aio_req req; \	960	aio_req req; \
		961	int req_pri = next_pri; \
		962	next_pri = DEFAULT_PRI + PRI_BIAS; \
597	\	963	\
598	if (SvOK (callback) && !SvROK (callback)) \	964	if (SvOK (callback) && !SvROK (callback)) \
599	croak ("clalback must be undef or of reference type"); \	965	croak ("callback must be undef or of reference type"); \
600	\	966	\
601	Newz (0, req, 1, aio_cb); \	967	Newz (0, req, 1, aio_cb); \
602	if (!req) \	968	if (!req) \
603	croak ("out of memory during aio_req allocation"); \	969	croak ("out of memory during aio_req allocation"); \
604	\	970	\
605	req->callback = newSVsv (callback);	971	req->callback = newSVsv (callback); \
		972	req->pri = req_pri
		973
		974	#define REQ_SEND \
		975	req_send (req); \
		976	\
		977	if (GIMME_V != G_VOID) \
		978	XPUSHs (req_sv (req, AIO_REQ_KLASS));
606		979
607	MODULE = IO::AIO PACKAGE = IO::AIO	980	MODULE = IO::AIO PACKAGE = IO::AIO
608		981
609	PROTOTYPES: ENABLE	982	PROTOTYPES: ENABLE
610		983
611	BOOT:	984	BOOT:
612	{	985	{
		986	HV *stash = gv_stashpv ("IO::AIO", 1);
		987	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
		988	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
		989	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
		990
613	create_pipe ();	991	create_pipe ();
614	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	992	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
615	}	993	}
616		994
617	void	995	void
618	min_parallel(nthreads)	996	min_parallel (nthreads)
619	int nthreads	997	int nthreads
620	PROTOTYPE: $	998	PROTOTYPE: $
621		999
622	void	1000	void
623	max_parallel(nthreads)	1001	max_parallel (nthreads)
624	int nthreads	1002	int nthreads
625	PROTOTYPE: $	1003	PROTOTYPE: $
626		1004
627	int	1005	int
628	max_outstanding(nreqs)	1006	max_outstanding (nreqs)
629	int nreqs	1007	int nreqs
630	PROTOTYPE: $	1008	PROTOTYPE: $
631	CODE:	1009	CODE:
632	RETVAL = max_outstanding;	1010	RETVAL = max_outstanding;
633	max_outstanding = nreqs;	1011	max_outstanding = nreqs;
634		1012
635	void	1013	void
636	aio_open(pathname,flags,mode,callback=&PL_sv_undef)	1014	aio_open (pathname,flags,mode,callback=&PL_sv_undef)
637	SV * pathname	1015	SV * pathname
638	int flags	1016	int flags
639	int mode	1017	int mode
640	SV * callback	1018	SV * callback
641	PROTOTYPE: $$$;$	1019	PROTOTYPE: $$$;$
642	CODE:	1020	PPCODE:
643	{	1021	{
644	dREQ;	1022	dREQ;
645		1023
646	req->type = REQ_OPEN;	1024	req->type = REQ_OPEN;
647	req->data = newSVsv (pathname);	1025	req->data = newSVsv (pathname);
648	req->dataptr = SvPVbyte_nolen (req->data);	1026	req->dataptr = SvPVbyte_nolen (req->data);
649	req->fd = flags;	1027	req->fd = flags;
650	req->mode = mode;	1028	req->mode = mode;
651		1029
652	send_req (req);	1030	REQ_SEND;
653	}	1031	}
654		1032
655	void	1033	void
656	aio_close(fh,callback=&PL_sv_undef)	1034	aio_close (fh,callback=&PL_sv_undef)
657	SV * fh	1035	SV * fh
658	SV * callback	1036	SV * callback
659	PROTOTYPE: $;$	1037	PROTOTYPE: $;$
660	ALIAS:	1038	ALIAS:
661	aio_close = REQ_CLOSE	1039	aio_close = REQ_CLOSE
662	aio_fsync = REQ_FSYNC	1040	aio_fsync = REQ_FSYNC
663	aio_fdatasync = REQ_FDATASYNC	1041	aio_fdatasync = REQ_FDATASYNC
664	CODE:	1042	PPCODE:
665	{	1043	{
666	dREQ;	1044	dREQ;
667		1045
668	req->type = ix;	1046	req->type = ix;
669	req->fh = newSVsv (fh);	1047	req->fh = newSVsv (fh);
670	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1048	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
671		1049
672	send_req (req);	1050	REQ_SEND (req);
673	}	1051	}
674		1052
675	void	1053	void
676	aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1054	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
677	SV * fh	1055	SV * fh
678	UV offset	1056	UV offset
679	UV length	1057	UV length
680	SV * data	1058	SV * data
681	UV dataoffset	1059	UV dataoffset
682	SV * callback	1060	SV * callback
683	ALIAS:	1061	ALIAS:
684	aio_read = REQ_READ	1062	aio_read = REQ_READ
685	aio_write = REQ_WRITE	1063	aio_write = REQ_WRITE
686	PROTOTYPE: $$$$$;$	1064	PROTOTYPE: $$$$$;$
687	CODE:	1065	PPCODE:
688	{	1066	{
689	aio_req req;	1067	aio_req req;
690	STRLEN svlen;	1068	STRLEN svlen;
691	char *svptr = SvPVbyte (data, svlen);	1069	char *svptr = SvPVbyte (data, svlen);
692		1070
…		…
730	{	1108	{
731	SvREADONLY_on (data);	1109	SvREADONLY_on (data);
732	req->data2ptr = (void *)data;	1110	req->data2ptr = (void *)data;
733	}	1111	}
734		1112
735	send_req (req);	1113	REQ_SEND;
736	}	1114	}
737	}	1115	}
738		1116
739	void	1117	void
740	aio_sendfile(out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1118	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)
741	SV * out_fh	1119	SV * out_fh
742	SV * in_fh	1120	SV * in_fh
743	UV in_offset	1121	UV in_offset
744	UV length	1122	UV length
745	SV * callback	1123	SV * callback
746	PROTOTYPE: $$$$;$	1124	PROTOTYPE: $$$$;$
747	CODE:	1125	PPCODE:
748	{	1126	{
749	dREQ;	1127	dREQ;
750		1128
751	req->type = REQ_SENDFILE;	1129	req->type = REQ_SENDFILE;
752	req->fh = newSVsv (out_fh);	1130	req->fh = newSVsv (out_fh);
…		…
754	req->fh2 = newSVsv (in_fh);	1132	req->fh2 = newSVsv (in_fh);
755	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1133	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
756	req->offset = in_offset;	1134	req->offset = in_offset;
757	req->length = length;	1135	req->length = length;
758		1136
759	send_req (req);	1137	REQ_SEND;
760	}	1138	}
761		1139
762	void	1140	void
763	aio_readahead(fh,offset,length,callback=&PL_sv_undef)	1141	aio_readahead (fh,offset,length,callback=&PL_sv_undef)
764	SV * fh	1142	SV * fh
765	UV offset	1143	UV offset
766	IV length	1144	IV length
767	SV * callback	1145	SV * callback
768	PROTOTYPE: $$$;$	1146	PROTOTYPE: $$$;$
769	CODE:	1147	PPCODE:
770	{	1148	{
771	dREQ;	1149	dREQ;
772		1150
773	req->type = REQ_READAHEAD;	1151	req->type = REQ_READAHEAD;
774	req->fh = newSVsv (fh);	1152	req->fh = newSVsv (fh);
775	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1153	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
776	req->offset = offset;	1154	req->offset = offset;
777	req->length = length;	1155	req->length = length;
778		1156
779	send_req (req);	1157	REQ_SEND;
780	}	1158	}
781		1159
782	void	1160	void
783	aio_stat(fh_or_path,callback=&PL_sv_undef)	1161	aio_stat (fh_or_path,callback=&PL_sv_undef)
784	SV * fh_or_path	1162	SV * fh_or_path
785	SV * callback	1163	SV * callback
786	ALIAS:	1164	ALIAS:
787	aio_stat = REQ_STAT	1165	aio_stat = REQ_STAT
788	aio_lstat = REQ_LSTAT	1166	aio_lstat = REQ_LSTAT
789	CODE:	1167	PPCODE:
790	{	1168	{
791	dREQ;	1169	dREQ;
792		1170
793	New (0, req->statdata, 1, Stat_t);	1171	New (0, req->statdata, 1, Stat_t);
794	if (!req->statdata)	1172	if (!req->statdata)
795	{	1173	{
796	free_req (req);	1174	req_free (req);
797	croak ("out of memory during aio_req->statdata allocation");	1175	croak ("out of memory during aio_req->statdata allocation");
798	}	1176	}
799		1177
800	if (SvPOK (fh_or_path))	1178	if (SvPOK (fh_or_path))
801	{	1179	{
…		…
808	req->type = REQ_FSTAT;	1186	req->type = REQ_FSTAT;
809	req->fh = newSVsv (fh_or_path);	1187	req->fh = newSVsv (fh_or_path);
810	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1188	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
811	}	1189	}
812		1190
813	send_req (req);	1191	REQ_SEND;
814	}	1192	}
815		1193
816	void	1194	void
817	aio_unlink(pathname,callback=&PL_sv_undef)	1195	aio_unlink (pathname,callback=&PL_sv_undef)
818	SV * pathname	1196	SV * pathname
819	SV * callback	1197	SV * callback
820	ALIAS:	1198	ALIAS:
821	aio_unlink = REQ_UNLINK	1199	aio_unlink = REQ_UNLINK
822	aio_rmdir = REQ_RMDIR	1200	aio_rmdir = REQ_RMDIR
		1201	aio_readdir = REQ_READDIR
823	CODE:	1202	PPCODE:
824	{	1203	{
825	dREQ;	1204	dREQ;
826		1205
827	req->type = ix;	1206	req->type = ix;
828	req->data = newSVsv (pathname);	1207	req->data = newSVsv (pathname);
829	req->dataptr = SvPVbyte_nolen (req->data);	1208	req->dataptr = SvPVbyte_nolen (req->data);
830		1209
831	send_req (req);	1210	REQ_SEND;
832	}	1211	}
833		1212
834	void	1213	void
835	aio_symlink(oldpath,newpath,callback=&PL_sv_undef)	1214	aio_link (oldpath,newpath,callback=&PL_sv_undef)
836	SV * oldpath	1215	SV * oldpath
837	SV * newpath	1216	SV * newpath
838	SV * callback	1217	SV * callback
		1218	ALIAS:
		1219	aio_link = REQ_LINK
		1220	aio_symlink = REQ_SYMLINK
		1221	aio_rename = REQ_RENAME
839	CODE:	1222	PPCODE:
840	{	1223	{
841	dREQ;	1224	dREQ;
842		1225
843	req->type = REQ_SYMLINK;	1226	req->type = ix;
844	req->fh = newSVsv (oldpath);	1227	req->fh = newSVsv (oldpath);
845	req->data2ptr = SvPVbyte_nolen (req->fh);	1228	req->data2ptr = SvPVbyte_nolen (req->fh);
846	req->data = newSVsv (newpath);	1229	req->data = newSVsv (newpath);
847	req->dataptr = SvPVbyte_nolen (req->data);	1230	req->dataptr = SvPVbyte_nolen (req->data);
848		1231
849	send_req (req);	1232	REQ_SEND;
850	}	1233	}
851		1234
852	void	1235	void
		1236	aio_sleep (delay,callback=&PL_sv_undef)
		1237	double delay
		1238	SV * callback
		1239	PPCODE:
		1240	{
		1241	dREQ;
		1242
		1243	req->type = REQ_SLEEP;
		1244	req->fd = delay < 0. ? 0 : delay;
		1245	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
		1246
		1247	REQ_SEND;
		1248	}
		1249
		1250	void
		1251	aio_group (callback=&PL_sv_undef)
		1252	SV * callback
		1253	PROTOTYPE: ;$
		1254	PPCODE:
		1255	{
		1256	dREQ;
		1257
		1258	req->type = REQ_GROUP;
		1259	req_send (req);
		1260
		1261	XPUSHs (req_sv (req, AIO_GRP_KLASS));
		1262	}
		1263
		1264	void
		1265	aio_nop (callback=&PL_sv_undef)
		1266	SV * callback
		1267	PPCODE:
		1268	{
		1269	dREQ;
		1270
		1271	req->type = REQ_NOP;
		1272
		1273	REQ_SEND;
		1274	}
		1275
		1276	#if 0
		1277
		1278	void
		1279	aio_pri (int pri = DEFAULT_PRI)
		1280	CODE:
		1281	if (pri < PRI_MIN) pri = PRI_MIN;
		1282	if (pri > PRI_MAX) pri = PRI_MAX;
		1283	next_pri = pri + PRI_BIAS;
		1284
		1285	#endif
		1286
		1287	void
853	flush()	1288	flush ()
854	PROTOTYPE:	1289	PROTOTYPE:
855	CODE:	1290	CODE:
856	while (nreqs)	1291	while (nreqs)
857	{	1292	{
858	poll_wait ();	1293	poll_wait ();
…		…
898	CODE:	1333	CODE:
899	RETVAL = nreqs;	1334	RETVAL = nreqs;
900	OUTPUT:	1335	OUTPUT:
901	RETVAL	1336	RETVAL
902		1337
		1338	PROTOTYPES: DISABLE
		1339
		1340	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
		1341
		1342	void
		1343	cancel (aio_req_ornot req)
		1344	PROTOTYPE:
		1345	CODE:
		1346	req_cancel (req);
		1347
		1348	void
		1349	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
		1350	CODE:
		1351	SvREFCNT_dec (req->callback);
		1352	req->callback = newSVsv (callback);
		1353
		1354	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
		1355
		1356	void
		1357	add (aio_req grp, ...)
		1358	PPCODE:
		1359	{
		1360	int i;
		1361	aio_req req;
		1362
		1363	if (grp->fd == 2)
		1364	croak ("cannot add requests to IO::AIO::GRP after the group finished");
		1365
		1366	for (i = 1; i < items; ++i )
		1367	{
		1368	if (GIMME_V != G_VOID)
		1369	XPUSHs (sv_2mortal (newSVsv (ST (i))));
		1370
		1371	req = SvAIO_REQ (ST (i));
		1372
		1373	if (req)
		1374	{
		1375	++grp->length;
		1376	req->grp = grp;
		1377
		1378	req->grp_prev = 0;
		1379	req->grp_next = grp->grp_first;
		1380
		1381	if (grp->grp_first)
		1382	grp->grp_first->grp_prev = req;
		1383
		1384	grp->grp_first = req;
		1385	}
		1386	}
		1387	}
		1388
		1389	void
		1390	result (aio_req grp, ...)
		1391	CODE:
		1392	{
		1393	int i;
		1394	AV *av = newAV ();
		1395
		1396	for (i = 1; i < items; ++i )
		1397	av_push (av, newSVsv (ST (i)));
		1398
		1399	SvREFCNT_dec (grp->data);
		1400	grp->data = (SV *)av;
		1401	}
		1402
		1403	void
		1404	feed_limit (aio_req grp, int limit)
		1405	CODE:
		1406	grp->fd2 = limit;
		1407	aio_grp_feed (grp);
		1408
		1409	void
		1410	feed (aio_req grp, SV *callback=&PL_sv_undef)
		1411	CODE:
		1412	{
		1413	SvREFCNT_dec (grp->fh2);
		1414	grp->fh2 = newSVsv (callback);
		1415
		1416	if (grp->fd2 <= 0)
		1417	grp->fd2 = 2;
		1418
		1419	aio_grp_feed (grp);
		1420	}
		1421

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Comparing IO-AIO/AIO.xs (file contents): Revision 1.32 by root, Mon Aug 22 23:20:37 2005 UTC vs. Revision 1.64 by root, Mon Oct 23 23:54:41 2006 UTC

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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.32 by root, Mon Aug 22 23:20:37 2005 UTC vs.
Revision 1.64 by root, Mon Oct 23 23:54:41 2006 UTC