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

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.10 by root, Wed Jul 13 00:13:09 2005 UTC vs.
Revision 1.32 by root, Mon Aug 22 23:20:37 2005 UTC

…		…
		1	#define _REENTRANT 1
		2	#include <errno.h>
		3
1	#include "EXTERN.h"	4	#include "EXTERN.h"
2	#include "perl.h"	5	#include "perl.h"
3	#include "XSUB.h"	6	#include "XSUB.h"
4		7
5	#define _XOPEN_SOURCE 500	8	#include "autoconf/config.h"
		9
		10	#include <pthread.h>
6		11
7	#include <sys/types.h>	12	#include <sys/types.h>
8	#include <sys/stat.h>	13	#include <sys/stat.h>
9		14
10	#include <unistd.h>	15	#include <unistd.h>
11	#include <fcntl.h>	16	#include <fcntl.h>
12	#include <signal.h>	17	#include <signal.h>
13	#include <sched.h>	18	#include <sched.h>
		19
		20	#if HAVE_SENDFILE
14	#if __linux	21	# if __linux
		22	# include <sys/sendfile.h>
		23	# elif __freebsd
15	#include <sys/syscall.h>	24	# include <sys/socket.h>
		25	# include <sys/uio.h>
		26	# elif __hpux
		27	# include <sys/socket.h>
		28	# endif
16	#endif	29	#endif
17
18	#include <pthread.h>
19
20	typedef void InputStream; / hack, but 5.6.1 is simply toooo old ;) */
21	typedef void OutputStream; / hack, but 5.6.1 is simply toooo old ;) */
22	typedef void InOutStream; / hack, but 5.6.1 is simply toooo old ;) */
23		30
24	#if __ia64	31	#if __ia64
25	# define STACKSIZE 65536	32	# define STACKSIZE 65536
26	#else	33	#else
27	# define STACKSIZE 4096	34	# define STACKSIZE 4096
29		36
30	enum {	37	enum {
31	REQ_QUIT,	38	REQ_QUIT,
32	REQ_OPEN, REQ_CLOSE,	39	REQ_OPEN, REQ_CLOSE,
33	REQ_READ, REQ_WRITE, REQ_READAHEAD,	40	REQ_READ, REQ_WRITE, REQ_READAHEAD,
		41	REQ_SENDFILE,
34	REQ_STAT, REQ_LSTAT, REQ_FSTAT, REQ_UNLINK,	42	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
35	REQ_FSYNC, REQ_FDATASYNC,	43	REQ_FSYNC, REQ_FDATASYNC,
		44	REQ_UNLINK, REQ_RMDIR,
		45	REQ_SYMLINK,
36	};	46	};
37		47
38	typedef struct aio_cb {	48	typedef struct aio_cb {
39	struct aio_cb *volatile next;	49	struct aio_cb *volatile next;
40		50
41	int type;	51	int type;
42		52
43	int fd;	53	int fd, fd2;
44	off_t offset;	54	off_t offset;
45	size_t length;	55	size_t length;
46	ssize_t result;	56	ssize_t result;
47	mode_t mode; /* open */	57	mode_t mode; /* open */
48	int errorno;	58	int errorno;
49	SV data, callback;	59	SV data, callback;
50	void *dataptr;	60	SV fh, fh2;
		61	void dataptr, data2ptr;
51	STRLEN dataoffset;	62	STRLEN dataoffset;
52		63
53	Stat_t *statdata;	64	Stat_t *statdata;
54	} aio_cb;	65	} aio_cb;
55		66
56	typedef aio_cb *aio_req;	67	typedef aio_cb *aio_req;
57		68
58	static int started;	69	static int started, wanted;
59	static int nreqs;	70	static volatile int nreqs;
60	static int max_outstanding = 1<<30;	71	static int max_outstanding = 1<<30;
61	static int respipe [2];	72	static int respipe [2];
62		73
63	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	74	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;
64	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;	75	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
65	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	76	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
66		77
67	static volatile aio_req reqs, reqe; /* queue start, queue end */	78	static volatile aio_req reqs, reqe; /* queue start, queue end */
68	static volatile aio_req ress, rese; /* queue start, queue end */	79	static volatile aio_req ress, rese; /* queue start, queue end */
69		80
		81	static void free_req (aio_req req)
		82	{
		83	if (req->data)
		84	SvREFCNT_dec (req->data);
		85
		86	if (req->fh)
		87	SvREFCNT_dec (req->fh);
		88
		89	if (req->fh2)
		90	SvREFCNT_dec (req->fh2);
		91
		92	if (req->statdata)
		93	Safefree (req->statdata);
		94
		95	if (req->callback)
		96	SvREFCNT_dec (req->callback);
		97
		98	Safefree (req);
		99	}
		100
70	static void	101	static void
71	poll_wait ()	102	poll_wait ()
72	{	103	{
73	if (!nreqs)	104	if (nreqs && !ress)
74	return;	105	{
75
76	fd_set rfd;	106	fd_set rfd;
77	FD_ZERO(&rfd);	107	FD_ZERO(&rfd);
78	FD_SET(respipe [0], &rfd);	108	FD_SET(respipe [0], &rfd);
79		109
80	select (respipe [0] + 1, &rfd, 0, 0, 0);	110	select (respipe [0] + 1, &rfd, 0, 0, 0);
		111	}
81	}	112	}
82		113
83	static int	114	static int
84	poll_cb ()	115	poll_cb ()
85	{	116	{
86	dSP;	117	dSP;
87	int count = 0;	118	int count = 0;
		119	int do_croak = 0;
88	aio_req req;	120	aio_req req;
89
90	{
91	/* read and signals sent by the worker threads */
92	char buf [32];
93	while (read (respipe [0], buf, 32) > 0)
94	;
95	}
96		121
97	for (;;)	122	for (;;)
98	{	123	{
99	pthread_mutex_lock (&reslock);	124	pthread_mutex_lock (&reslock);
100
101	req = ress;	125	req = ress;
102		126
103	if (ress)	127	if (req)
104	{	128	{
105	ress = ress->next;	129	ress = req->next;
		130
106	if (!ress) rese = 0;	131	if (!ress)
		132	{
		133	/* read any signals sent by the worker threads */
		134	char buf [32];
		135	while (read (respipe [0], buf, 32) == 32)
		136	;
		137
		138	rese = 0;
		139	}
107	}	140	}
108		141
109	pthread_mutex_unlock (&reslock);	142	pthread_mutex_unlock (&reslock);
110		143
111	if (!req)	144	if (!req)
…		…
119	{	152	{
120	int errorno = errno;	153	int errorno = errno;
121	errno = req->errorno;	154	errno = req->errorno;
122		155
123	if (req->type == REQ_READ)	156	if (req->type == REQ_READ)
124	SvCUR_set (req->data, req->dataoffset	157	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
125	+ req->result > 0 ? req->result : 0);
126		158
		159	if (req->data2ptr && (req->type == REQ_READ \|\| req->type == REQ_WRITE))
		160	SvREADONLY_off (req->data);
		161
127	if (req->data)	162	if (req->statdata)
128	SvREFCNT_dec (req->data);
129
130	if (req->type == REQ_STAT \|\| req->type == REQ_LSTAT \|\| req->type == REQ_FSTAT)
131	{	163	{
132	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	164	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
133	PL_laststatval = req->result;	165	PL_laststatval = req->result;
134	PL_statcache = *(req->statdata);	166	PL_statcache = *(req->statdata);
135
136	Safefree (req->statdata);
137	}	167	}
138		168
		169	ENTER;
139	PUSHMARK (SP);	170	PUSHMARK (SP);
140	XPUSHs (sv_2mortal (newSViv (req->result)));	171	XPUSHs (sv_2mortal (newSViv (req->result)));
141		172
142	if (req->type == REQ_OPEN)	173	if (req->type == REQ_OPEN)
143	{	174	{
…		…
146		177
147	PUTBACK;	178	PUTBACK;
148	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);	179	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);
149	SPAGAIN;	180	SPAGAIN;
150		181
151	fh = POPs;	182	fh = SvREFCNT_inc (POPs);
152		183
153	PUSHMARK (SP);	184	PUSHMARK (SP);
154	XPUSHs (fh);	185	XPUSHs (sv_2mortal (fh));
155	}	186	}
156		187
157	if (SvOK (req->callback))	188	if (SvOK (req->callback))
158	{	189	{
159	PUTBACK;	190	PUTBACK;
160	call_sv (req->callback, G_VOID \| G_EVAL);	191	call_sv (req->callback, G_VOID \| G_EVAL);
161	SPAGAIN;	192	SPAGAIN;
		193
		194	if (SvTRUE (ERRSV))
		195	{
		196	free_req (req);
		197	croak (0);
		198	}
162	}	199	}
		200
163		201	LEAVE;
164	if (req->callback)
165	SvREFCNT_dec (req->callback);
166		202
167	errno = errorno;	203	errno = errorno;
168	count++;	204	count++;
169	}	205	}
170		206
171	Safefree (req);	207	free_req (req);
172	}	208	}
173		209
174	return count;	210	return count;
175	}	211	}
176		212
…		…
197	}	233	}
198		234
199	static void	235	static void
200	send_req (aio_req req)	236	send_req (aio_req req)
201	{	237	{
		238	while (started < wanted && nreqs >= started)
		239	start_thread ();
		240
202	nreqs++;	241	nreqs++;
203		242
204	pthread_mutex_lock (&reqlock);	243	pthread_mutex_lock (&reqlock);
205		244
206	req->next = 0;	245	req->next = 0;
…		…
214	reqe = reqs = req;	253	reqe = reqs = req;
215		254
216	pthread_cond_signal (&reqwait);	255	pthread_cond_signal (&reqwait);
217	pthread_mutex_unlock (&reqlock);	256	pthread_mutex_unlock (&reqlock);
218		257
219	while (nreqs > max_outstanding)	258	if (nreqs > max_outstanding)
		259	for (;;)
		260	{
		261	poll_cb ();
		262
		263	if (nreqs <= max_outstanding)
		264	break;
		265
		266	poll_wait ();
		267	}
		268	}
		269
		270	static void
		271	end_thread (void)
		272	{
		273	aio_req req;
		274	Newz (0, req, 1, aio_cb);
		275	req->type = REQ_QUIT;
		276
		277	send_req (req);
		278	}
		279
		280	static void min_parallel (int nthreads)
		281	{
		282	if (wanted < nthreads)
		283	wanted = nthreads;
		284	}
		285
		286	static void max_parallel (int nthreads)
		287	{
		288	int cur = started;
		289
		290	if (wanted > nthreads)
		291	wanted = nthreads;
		292
		293	while (cur > wanted)
		294	{
		295	end_thread ();
		296	cur--;
		297	}
		298
		299	while (started > wanted)
220	{	300	{
221	poll_wait ();	301	poll_wait ();
222	poll_cb ();	302	poll_cb ();
223	}	303	}
224	}	304	}
225		305
226	static void	306	static void create_pipe ()
227	end_thread (void)
228	{	307	{
		308	if (pipe (respipe))
		309	croak ("unable to initialize result pipe");
		310
		311	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
		312	croak ("cannot set result pipe to nonblocking mode");
		313
		314	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
		315	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	{
229	aio_req req;	332	aio_req prv;
230	New (0, req, 1, aio_cb);
231	req->type = REQ_QUIT;
232		333
233	send_req (req);	334	started = 0;
234	}
235		335
236	static void	336	while (reqs)
237	read_write (int dowrite, int fd, off_t offset, size_t length,
238	SV data, STRLEN dataoffset, SV callback)
239	{
240	aio_req req;
241	STRLEN svlen;
242	char *svptr = SvPV (data, svlen);
243
244	SvUPGRADE (data, SVt_PV);
245	SvPOK_on (data);
246
247	if (dataoffset < 0)
248	dataoffset += svlen;
249
250	if (dataoffset < 0 \|\| dataoffset > svlen)
251	croak ("data offset outside of string");
252
253	if (dowrite)
254	{	337	{
255	/* write: check length and adjust. */	338	prv = reqs;
256	if (length < 0 \|\| length + dataoffset > svlen)	339	reqs = prv->next;
257	length = svlen - dataoffset;	340	free_req (prv);
258	}	341	}
259	else	342
		343	reqs = reqe = 0;
		344
		345	while (ress)
260	{	346	{
261	/* read: grow scalar as necessary */	347	prv = ress;
262	svptr = SvGROW (data, length + dataoffset);	348	ress = prv->next;
		349	free_req (prv);
263	}	350	}
		351
		352	ress = rese = 0;
264		353
265	if (length < 0)	354	close (respipe [0]);
266	croak ("length must not be negative");	355	close (respipe [1]);
		356	create_pipe ();
267		357
268	Newz (0, req, 1, aio_cb);	358	atfork_parent ();
269
270	if (!req)
271	croak ("out of memory during aio_req allocation");
272
273	req->type = dowrite ? REQ_WRITE : REQ_READ;
274	req->fd = fd;
275	req->offset = offset;
276	req->length = length;
277	req->data = SvREFCNT_inc (data);
278	req->dataptr = (char *)svptr + dataoffset;
279	req->callback = SvREFCNT_inc (callback);
280
281	send_req (req);
282	}	359	}
		360
		361	/*****************************************************************************/
		362	/* work around various missing functions */
		363
		364	#if !HAVE_PREADWRITE
		365	# define pread aio_pread
		366	# define pwrite aio_pwrite
		367
		368	/*
		369	* make our pread/pwrite safe against themselves, but not against
		370	* normal read/write by using a mutex. slows down execution a lot,
		371	* but that's your problem, not mine.
		372	*/
		373	static pthread_mutex_t iolock = PTHREAD_MUTEX_INITIALIZER;
		374
		375	static ssize_t
		376	pread (int fd, void *buf, size_t count, off_t offset)
		377	{
		378	ssize_t res;
		379	off_t ooffset;
		380
		381	pthread_mutex_lock (&iolock);
		382	ooffset = lseek (fd, 0, SEEK_CUR);
		383	lseek (fd, offset, SEEK_SET);
		384	res = read (fd, buf, count);
		385	lseek (fd, ooffset, SEEK_SET);
		386	pthread_mutex_unlock (&iolock);
		387
		388	return res;
		389	}
		390
		391	static ssize_t
		392	pwrite (int fd, void *buf, size_t count, off_t offset)
		393	{
		394	ssize_t res;
		395	off_t ooffset;
		396
		397	pthread_mutex_lock (&iolock);
		398	ooffset = lseek (fd, 0, SEEK_CUR);
		399	lseek (fd, offset, SEEK_SET);
		400	res = write (fd, buf, count);
		401	lseek (fd, offset, SEEK_SET);
		402	pthread_mutex_unlock (&iolock);
		403
		404	return res;
		405	}
		406	#endif
		407
		408	#if !HAVE_FDATASYNC
		409	# define fdatasync fsync
		410	#endif
		411
		412	#if !HAVE_READAHEAD
		413	# define readahead aio_readahead
		414
		415	static char readahead_buf[4096];
		416
		417	static ssize_t
		418	readahead (int fd, off_t offset, size_t count)
		419	{
		420	while (count > 0)
		421	{
		422	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
		423
		424	pread (fd, readahead_buf, len, offset);
		425	offset += len;
		426	count -= len;
		427	}
		428
		429	errno = 0;
		430	}
		431	#endif
		432
		433	/* sendfile always needs emulation */
		434	static ssize_t
		435	sendfile_ (int ofd, int ifd, off_t offset, size_t count)
		436	{
		437	ssize_t res;
		438
		439	if (!count)
		440	return 0;
		441
		442	#if __linux
		443	res = sendfile (ofd, ifd, &offset, count);
		444
		445	#elif __freebsd
		446	/*
		447	* Of course, the freebsd sendfile is a dire hack with no thoughts
		448	* wasted on making it similar to other i/o functions.
		449	*/
		450	{
		451	off_t sbytes;
		452	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
		453
		454	if (!res && errno == EAGAIN)
		455	res = sbytes;
		456	}
		457
		458	#elif __hpux
		459	res = sendfile (ofd, ifd, offset, count, 0, 0);
		460
		461	#else
		462	res = -1;
		463	errno = ENOSYS;
		464	#endif
		465
		466	if (res < 0 && (errno == ENOSYS \|\| errno == EINVAL \|\| errno == ENOTSOCK))
		467	{
		468	/* emulate sendfile. this is a major pain in the ass */
		469	char *buf = malloc (4096);
		470	res = 0;
		471
		472	for (;;)
		473	{
		474	ssize_t cnt;
		475
		476	cnt = pread (ifd, buf, 4096, offset);
		477
		478	if (cnt <= 0)
		479	{
		480	if (cnt && !res) res = -1;
		481	break;
		482	}
		483
		484	cnt = write (ofd, buf, cnt);
		485
		486	if (cnt <= 0)
		487	{
		488	if (cnt && !res) res = -1;
		489	break;
		490	}
		491
		492	offset += cnt;
		493	res += cnt;
		494	}
		495
		496	{
		497	int errorno = errno;
		498	free (buf);
		499	errno = errorno;
		500	}
		501	}
		502
		503	return res;
		504	}
		505
		506	/*****************************************************************************/
283		507
284	static void *	508	static void *
285	aio_proc (void *thr_arg)	509	aio_proc (void *thr_arg)
286	{	510	{
287	aio_req req;	511	aio_req req;
…		…
315		539
316	switch (type)	540	switch (type)
317	{	541	{
318	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;	542	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
319	case REQ_WRITE: req->result = pwrite (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;
320	#if SYS_readahead	544
321	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	545	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
322	#else	546	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
323	case REQ_READAHEAD: req->result = -1; errno = ENOSYS; break;
324	#endif
325		547
326	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	548	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
327	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	549	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
328	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	550	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
329		551
330	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;	552	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
331	case REQ_CLOSE: req->result = close (req->fd); break;	553	case REQ_CLOSE: req->result = close (req->fd); break;
332	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	554	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
		555	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
		556	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
333		557
		558	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
334	case REQ_FSYNC: req->result = fsync (req->fd); break;	559	case REQ_FSYNC: req->result = fsync (req->fd); break;
335	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
336		560
337	case REQ_QUIT:	561	case REQ_QUIT:
338	break;	562	break;
339		563
340	default:	564	default:
…		…
366	while (type != REQ_QUIT);	590	while (type != REQ_QUIT);
367		591
368	return 0;	592	return 0;
369	}	593	}
370		594
		595	#define dREQ \
		596	aio_req req; \
		597	\
		598	if (SvOK (callback) && !SvROK (callback)) \
		599	croak ("clalback must be undef or of reference type"); \
		600	\
		601	Newz (0, req, 1, aio_cb); \
		602	if (!req) \
		603	croak ("out of memory during aio_req allocation"); \
		604	\
		605	req->callback = newSVsv (callback);
		606
371	MODULE = IO::AIO PACKAGE = IO::AIO	607	MODULE = IO::AIO PACKAGE = IO::AIO
372		608
373	PROTOTYPES: ENABLE	609	PROTOTYPES: ENABLE
374		610
375	BOOT:	611	BOOT:
376	{	612	{
377	if (pipe (respipe))	613	create_pipe ();
378	croak ("unable to initialize result pipe");	614	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
379
380	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
381	croak ("cannot set result pipe to nonblocking mode");
382
383	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
384	croak ("cannot set result pipe to nonblocking mode");
385	}	615	}
386		616
387	void	617	void
388	min_parallel(nthreads)	618	min_parallel(nthreads)
389	int nthreads	619	int nthreads
390	PROTOTYPE: $	620	PROTOTYPE: $
391	CODE:
392	while (nthreads > started)
393	start_thread ();
394		621
395	void	622	void
396	max_parallel(nthreads)	623	max_parallel(nthreads)
397	int nthreads	624	int nthreads
398	PROTOTYPE: $	625	PROTOTYPE: $
399	CODE:
400	{
401	int cur = started;
402	while (cur > nthreads)
403	{
404	end_thread ();
405	cur--;
406	}
407
408	while (started > nthreads)
409	{
410	poll_wait ();
411	poll_cb ();
412	}
413	}
414		626
415	int	627	int
416	max_outstanding(nreqs)	628	max_outstanding(nreqs)
417	int nreqs	629	int nreqs
418	PROTOTYPE: $	630	PROTOTYPE: $
…		…
427	int mode	639	int mode
428	SV * callback	640	SV * callback
429	PROTOTYPE: $$$;$	641	PROTOTYPE: $$$;$
430	CODE:	642	CODE:
431	{	643	{
432	aio_req req;	644	dREQ;
433
434	Newz (0, req, 1, aio_cb);
435
436	if (!req)
437	croak ("out of memory during aio_req allocation");
438		645
439	req->type = REQ_OPEN;	646	req->type = REQ_OPEN;
440	req->data = newSVsv (pathname);	647	req->data = newSVsv (pathname);
441	req->dataptr = SvPV_nolen (req->data);	648	req->dataptr = SvPVbyte_nolen (req->data);
442	req->fd = flags;	649	req->fd = flags;
443	req->mode = mode;	650	req->mode = mode;
444	req->callback = SvREFCNT_inc (callback);
445		651
446	send_req (req);	652	send_req (req);
447	}	653	}
448		654
449	void	655	void
450	aio_close(fh,callback=&PL_sv_undef)	656	aio_close(fh,callback=&PL_sv_undef)
451	InputStream fh	657	SV * fh
452	SV * callback	658	SV * callback
453	PROTOTYPE: $;$	659	PROTOTYPE: $;$
454	ALIAS:	660	ALIAS:
455	aio_close = REQ_CLOSE	661	aio_close = REQ_CLOSE
456	aio_fsync = REQ_FSYNC	662	aio_fsync = REQ_FSYNC
457	aio_fdatasync = REQ_FDATASYNC	663	aio_fdatasync = REQ_FDATASYNC
458	CODE:	664	CODE:
459	{	665	{
460	aio_req req;	666	dREQ;
461
462	Newz (0, req, 1, aio_cb);
463
464	if (!req)
465	croak ("out of memory during aio_req allocation");
466		667
467	req->type = ix;	668	req->type = ix;
		669	req->fh = newSVsv (fh);
468	req->fd = PerlIO_fileno (fh);	670	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
469	req->callback = SvREFCNT_inc (callback);
470		671
471	send_req (req);	672	send_req (req);
472	}	673	}
473		674
474	void	675	void
475	aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	676	aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
476	InputStream fh	677	SV * fh
477	UV offset	678	UV offset
478	IV length	679	UV length
479	SV * data	680	SV * data
480	IV dataoffset	681	UV dataoffset
481	SV * callback	682	SV * callback
		683	ALIAS:
		684	aio_read = REQ_READ
		685	aio_write = REQ_WRITE
482	PROTOTYPE: $$$$$;$	686	PROTOTYPE: $$$$$;$
483	CODE:	687	CODE:
484	read_write (0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);	688	{
		689	aio_req req;
		690	STRLEN svlen;
		691	char *svptr = SvPVbyte (data, svlen);
485		692
		693	SvUPGRADE (data, SVt_PV);
		694	SvPOK_on (data);
		695
		696	if (dataoffset < 0)
		697	dataoffset += svlen;
		698
		699	if (dataoffset < 0 \|\| dataoffset > svlen)
		700	croak ("data offset outside of string");
		701
		702	if (ix == REQ_WRITE)
		703	{
		704	/* write: check length and adjust. */
		705	if (length < 0 \|\| length + dataoffset > svlen)
		706	length = svlen - dataoffset;
		707	}
		708	else
		709	{
		710	/* read: grow scalar as necessary */
		711	svptr = SvGROW (data, length + dataoffset);
		712	}
		713
		714	if (length < 0)
		715	croak ("length must not be negative");
		716
		717	{
		718	dREQ;
		719
		720	req->type = ix;
		721	req->fh = newSVsv (fh);
		722	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
		723	: IoOFP (sv_2io (fh)));
		724	req->offset = offset;
		725	req->length = length;
		726	req->data = SvREFCNT_inc (data);
		727	req->dataptr = (char *)svptr + dataoffset;
		728
		729	if (!SvREADONLY (data))
		730	{
		731	SvREADONLY_on (data);
		732	req->data2ptr = (void *)data;
		733	}
		734
		735	send_req (req);
		736	}
		737	}
		738
486	void	739	void
487	aio_write(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	740	aio_sendfile(out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)
488	OutputStream fh	741	SV * out_fh
		742	SV * in_fh
489	UV offset	743	UV in_offset
490	IV length	744	UV length
491	SV * data
492	IV dataoffset
493	SV * callback	745	SV * callback
494	PROTOTYPE: $$$$$;$	746	PROTOTYPE: $$$$;$
495	CODE:	747	CODE:
496	read_write (1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);	748	{
		749	dREQ;
		750
		751	req->type = REQ_SENDFILE;
		752	req->fh = newSVsv (out_fh);
		753	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
		754	req->fh2 = newSVsv (in_fh);
		755	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
		756	req->offset = in_offset;
		757	req->length = length;
		758
		759	send_req (req);
		760	}
497		761
498	void	762	void
499	aio_readahead(fh,offset,length,callback=&PL_sv_undef)	763	aio_readahead(fh,offset,length,callback=&PL_sv_undef)
500	InputStream fh	764	SV * fh
501	UV offset	765	UV offset
502	IV length	766	IV length
503	SV * callback	767	SV * callback
504	PROTOTYPE: $$$;$	768	PROTOTYPE: $$$;$
505	CODE:	769	CODE:
506	{	770	{
507	aio_req req;	771	dREQ;
508
509	if (length < 0)
510	croak ("length must not be negative");
511
512	Newz (0, req, 1, aio_cb);
513
514	if (!req)
515	croak ("out of memory during aio_req allocation");
516		772
517	req->type = REQ_READAHEAD;	773	req->type = REQ_READAHEAD;
		774	req->fh = newSVsv (fh);
518	req->fd = PerlIO_fileno (fh);	775	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
519	req->offset = offset;	776	req->offset = offset;
520	req->length = length;	777	req->length = length;
521	req->callback = SvREFCNT_inc (callback);
522		778
523	send_req (req);	779	send_req (req);
524	}	780	}
525		781
526	void	782	void
…		…
530	ALIAS:	786	ALIAS:
531	aio_stat = REQ_STAT	787	aio_stat = REQ_STAT
532	aio_lstat = REQ_LSTAT	788	aio_lstat = REQ_LSTAT
533	CODE:	789	CODE:
534	{	790	{
535	aio_req req;	791	dREQ;
536
537	Newz (0, req, 1, aio_cb);
538
539	if (!req)
540	croak ("out of memory during aio_req allocation");
541		792
542	New (0, req->statdata, 1, Stat_t);	793	New (0, req->statdata, 1, Stat_t);
543
544	if (!req->statdata)	794	if (!req->statdata)
		795	{
		796	free_req (req);
545	croak ("out of memory during aio_req->statdata allocation");	797	croak ("out of memory during aio_req->statdata allocation");
		798	}
546		799
547	if (SvPOK (fh_or_path))	800	if (SvPOK (fh_or_path))
548	{	801	{
549	req->type = ix;	802	req->type = ix;
550	req->data = newSVsv (fh_or_path);	803	req->data = newSVsv (fh_or_path);
551	req->dataptr = SvPV_nolen (req->data);	804	req->dataptr = SvPVbyte_nolen (req->data);
552	}	805	}
553	else	806	else
554	{	807	{
555	req->type = REQ_FSTAT;	808	req->type = REQ_FSTAT;
		809	req->fh = newSVsv (fh_or_path);
556	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	810	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
557	}	811	}
558
559	req->callback = SvREFCNT_inc (callback);
560		812
561	send_req (req);	813	send_req (req);
562	}	814	}
563		815
564	void	816	void
565	aio_unlink(pathname,callback=&PL_sv_undef)	817	aio_unlink(pathname,callback=&PL_sv_undef)
566	SV * pathname	818	SV * pathname
567	SV * callback	819	SV * callback
		820	ALIAS:
		821	aio_unlink = REQ_UNLINK
		822	aio_rmdir = REQ_RMDIR
568	CODE:	823	CODE:
569	{	824	{
570	aio_req req;	825	dREQ;
571		826
572	Newz (0, req, 1, aio_cb);	827	req->type = ix;
		828	req->data = newSVsv (pathname);
		829	req->dataptr = SvPVbyte_nolen (req->data);
573		830
574	if (!req)	831	send_req (req);
575	croak ("out of memory during aio_req allocation");	832	}
		833
		834	void
		835	aio_symlink(oldpath,newpath,callback=&PL_sv_undef)
		836	SV * oldpath
		837	SV * newpath
		838	SV * callback
		839	CODE:
		840	{
		841	dREQ;
576		842
577	req->type = REQ_UNLINK;	843	req->type = REQ_SYMLINK;
		844	req->fh = newSVsv (oldpath);
		845	req->data2ptr = SvPVbyte_nolen (req->fh);
578	req->data = newSVsv (pathname);	846	req->data = newSVsv (newpath);
579	req->dataptr = SvPV_nolen (req->data);	847	req->dataptr = SvPVbyte_nolen (req->data);
580	req->callback = SvREFCNT_inc (callback);
581		848
582	send_req (req);	849	send_req (req);
583	}	850	}
584		851
585	void	852	void

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Comparing IO-AIO/AIO.xs (file contents): Revision 1.10 by root, Wed Jul 13 00:13:09 2005 UTC vs. Revision 1.32 by root, Mon Aug 22 23:20:37 2005 UTC

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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.10 by root, Wed Jul 13 00:13:09 2005 UTC vs.
Revision 1.32 by root, Mon Aug 22 23:20:37 2005 UTC