[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 1.34 by root, Tue Aug 23 00:03:14 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	# else
		29	# error sendfile support requested but not available
		30	# endif
16	#endif	31	#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		32
24	#if __ia64	33	#if __ia64
25	# define STACKSIZE 65536	34	# define STACKSIZE 65536
26	#else	35	#else
27	# define STACKSIZE 4096	36	# define STACKSIZE 4096
29		38
30	enum {	39	enum {
31	REQ_QUIT,	40	REQ_QUIT,
32	REQ_OPEN, REQ_CLOSE,	41	REQ_OPEN, REQ_CLOSE,
33	REQ_READ, REQ_WRITE, REQ_READAHEAD,	42	REQ_READ, REQ_WRITE, REQ_READAHEAD,
		43	REQ_SENDFILE,
34	REQ_STAT, REQ_LSTAT, REQ_FSTAT, REQ_UNLINK,	44	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
35	REQ_FSYNC, REQ_FDATASYNC,	45	REQ_FSYNC, REQ_FDATASYNC,
		46	REQ_UNLINK, REQ_RMDIR,
		47	REQ_SYMLINK,
36	};	48	};
37		49
38	typedef struct aio_cb {	50	typedef struct aio_cb {
39	struct aio_cb *volatile next;	51	struct aio_cb *volatile next;
40		52
41	int type;	53	int type;
42		54
43	int fd;	55	int fd, fd2;
44	off_t offset;	56	off_t offset;
45	size_t length;	57	size_t length;
46	ssize_t result;	58	ssize_t result;
47	mode_t mode; /* open */	59	mode_t mode; /* open */
48	int errorno;	60	int errorno;
49	SV data, callback;	61	SV data, callback;
50	void *dataptr;	62	SV fh, fh2;
		63	void dataptr, data2ptr;
51	STRLEN dataoffset;	64	STRLEN dataoffset;
52		65
53	Stat_t *statdata;	66	Stat_t *statdata;
54	} aio_cb;	67	} aio_cb;
55		68
56	typedef aio_cb *aio_req;	69	typedef aio_cb *aio_req;
57		70
58	static int started;	71	static int started, wanted;
59	static int nreqs;	72	static volatile int nreqs;
60	static int max_outstanding = 1<<30;	73	static int max_outstanding = 1<<30;
61	static int respipe [2];	74	static int respipe [2];
62		75
63	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	76	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;
64	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;	77	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
65	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	78	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
66		79
67	static volatile aio_req reqs, reqe; /* queue start, queue end */	80	static volatile aio_req reqs, reqe; /* queue start, queue end */
68	static volatile aio_req ress, rese; /* queue start, queue end */	81	static volatile aio_req ress, rese; /* queue start, queue end */
69		82
		83	static void free_req (aio_req req)
		84	{
		85	if (req->data)
		86	SvREFCNT_dec (req->data);
		87
		88	if (req->fh)
		89	SvREFCNT_dec (req->fh);
		90
		91	if (req->fh2)
		92	SvREFCNT_dec (req->fh2);
		93
		94	if (req->statdata)
		95	Safefree (req->statdata);
		96
		97	if (req->callback)
		98	SvREFCNT_dec (req->callback);
		99
		100	Safefree (req);
		101	}
		102
70	static void	103	static void
71	poll_wait ()	104	poll_wait ()
72	{	105	{
73	if (!nreqs)	106	if (nreqs && !ress)
74	return;	107	{
75
76	fd_set rfd;	108	fd_set rfd;
77	FD_ZERO(&rfd);	109	FD_ZERO(&rfd);
78	FD_SET(respipe [0], &rfd);	110	FD_SET(respipe [0], &rfd);
79		111
80	select (respipe [0] + 1, &rfd, 0, 0, 0);	112	select (respipe [0] + 1, &rfd, 0, 0, 0);
		113	}
81	}	114	}
82		115
83	static int	116	static int
84	poll_cb ()	117	poll_cb ()
85	{	118	{
86	dSP;	119	dSP;
87	int count = 0;	120	int count = 0;
		121	int do_croak = 0;
88	aio_req req;	122	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		123
97	for (;;)	124	for (;;)
98	{	125	{
99	pthread_mutex_lock (&reslock);	126	pthread_mutex_lock (&reslock);
100
101	req = ress;	127	req = ress;
102		128
103	if (ress)	129	if (req)
104	{	130	{
105	ress = ress->next;	131	ress = req->next;
		132
106	if (!ress) rese = 0;	133	if (!ress)
		134	{
		135	/* read any signals sent by the worker threads */
		136	char buf [32];
		137	while (read (respipe [0], buf, 32) == 32)
		138	;
		139
		140	rese = 0;
		141	}
107	}	142	}
108		143
109	pthread_mutex_unlock (&reslock);	144	pthread_mutex_unlock (&reslock);
110		145
111	if (!req)	146	if (!req)
…		…
119	{	154	{
120	int errorno = errno;	155	int errorno = errno;
121	errno = req->errorno;	156	errno = req->errorno;
122		157
123	if (req->type == REQ_READ)	158	if (req->type == REQ_READ)
124	SvCUR_set (req->data, req->dataoffset	159	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
125	+ req->result > 0 ? req->result : 0);
126		160
		161	if (req->data2ptr && (req->type == REQ_READ \|\| req->type == REQ_WRITE))
		162	SvREADONLY_off (req->data);
		163
127	if (req->data)	164	if (req->statdata)
128	SvREFCNT_dec (req->data);
129
130	if (req->type == REQ_STAT \|\| req->type == REQ_LSTAT \|\| req->type == REQ_FSTAT)
131	{	165	{
132	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	166	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
133	PL_laststatval = req->result;	167	PL_laststatval = req->result;
134	PL_statcache = *(req->statdata);	168	PL_statcache = *(req->statdata);
135
136	Safefree (req->statdata);
137	}	169	}
138		170
		171	ENTER;
139	PUSHMARK (SP);	172	PUSHMARK (SP);
140	XPUSHs (sv_2mortal (newSViv (req->result)));	173	XPUSHs (sv_2mortal (newSViv (req->result)));
141		174
142	if (req->type == REQ_OPEN)	175	if (req->type == REQ_OPEN)
143	{	176	{
…		…
146		179
147	PUTBACK;	180	PUTBACK;
148	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);	181	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);
149	SPAGAIN;	182	SPAGAIN;
150		183
151	fh = POPs;	184	fh = SvREFCNT_inc (POPs);
152		185
153	PUSHMARK (SP);	186	PUSHMARK (SP);
154	XPUSHs (fh);	187	XPUSHs (sv_2mortal (fh));
155	}	188	}
156		189
157	if (SvOK (req->callback))	190	if (SvOK (req->callback))
158	{	191	{
159	PUTBACK;	192	PUTBACK;
160	call_sv (req->callback, G_VOID \| G_EVAL);	193	call_sv (req->callback, G_VOID \| G_EVAL);
161	SPAGAIN;	194	SPAGAIN;
		195
		196	if (SvTRUE (ERRSV))
		197	{
		198	free_req (req);
		199	croak (0);
		200	}
162	}	201	}
		202
163		203	LEAVE;
164	if (req->callback)
165	SvREFCNT_dec (req->callback);
166		204
167	errno = errorno;	205	errno = errorno;
168	count++;	206	count++;
169	}	207	}
170		208
171	Safefree (req);	209	free_req (req);
172	}	210	}
173		211
174	return count;	212	return count;
175	}	213	}
176		214
…		…
197	}	235	}
198		236
199	static void	237	static void
200	send_req (aio_req req)	238	send_req (aio_req req)
201	{	239	{
		240	while (started < wanted && nreqs >= started)
		241	start_thread ();
		242
202	nreqs++;	243	nreqs++;
203		244
204	pthread_mutex_lock (&reqlock);	245	pthread_mutex_lock (&reqlock);
205		246
206	req->next = 0;	247	req->next = 0;
…		…
214	reqe = reqs = req;	255	reqe = reqs = req;
215		256
216	pthread_cond_signal (&reqwait);	257	pthread_cond_signal (&reqwait);
217	pthread_mutex_unlock (&reqlock);	258	pthread_mutex_unlock (&reqlock);
218		259
219	while (nreqs > max_outstanding)	260	if (nreqs > max_outstanding)
		261	for (;;)
		262	{
		263	poll_cb ();
		264
		265	if (nreqs <= max_outstanding)
		266	break;
		267
		268	poll_wait ();
		269	}
		270	}
		271
		272	static void
		273	end_thread (void)
		274	{
		275	aio_req req;
		276	Newz (0, req, 1, aio_cb);
		277	req->type = REQ_QUIT;
		278
		279	send_req (req);
		280	}
		281
		282	static void min_parallel (int nthreads)
		283	{
		284	if (wanted < nthreads)
		285	wanted = nthreads;
		286	}
		287
		288	static void max_parallel (int nthreads)
		289	{
		290	int cur = started;
		291
		292	if (wanted > nthreads)
		293	wanted = nthreads;
		294
		295	while (cur > wanted)
		296	{
		297	end_thread ();
		298	cur--;
		299	}
		300
		301	while (started > wanted)
220	{	302	{
221	poll_wait ();	303	poll_wait ();
222	poll_cb ();	304	poll_cb ();
223	}	305	}
224	}	306	}
225		307
226	static void	308	static void create_pipe ()
227	end_thread (void)
228	{	309	{
		310	if (pipe (respipe))
		311	croak ("unable to initialize result pipe");
		312
		313	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
		314	croak ("cannot set result pipe to nonblocking mode");
		315
		316	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
		317	croak ("cannot set result pipe to nonblocking mode");
		318	}
		319
		320	static void atfork_prepare (void)
		321	{
		322	pthread_mutex_lock (&reqlock);
		323	pthread_mutex_lock (&reslock);
		324	}
		325
		326	static void atfork_parent (void)
		327	{
		328	pthread_mutex_unlock (&reslock);
		329	pthread_mutex_unlock (&reqlock);
		330	}
		331
		332	static void atfork_child (void)
		333	{
229	aio_req req;	334	aio_req prv;
230	New (0, req, 1, aio_cb);
231	req->type = REQ_QUIT;
232		335
233	send_req (req);	336	started = 0;
234	}
235		337
236	static void	338	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	{	339	{
255	/* write: check length and adjust. */	340	prv = reqs;
256	if (length < 0 \|\| length + dataoffset > svlen)	341	reqs = prv->next;
257	length = svlen - dataoffset;	342	free_req (prv);
258	}	343	}
259	else	344
		345	reqs = reqe = 0;
		346
		347	while (ress)
260	{	348	{
261	/* read: grow scalar as necessary */	349	prv = ress;
262	svptr = SvGROW (data, length + dataoffset);	350	ress = prv->next;
		351	free_req (prv);
263	}	352	}
		353
		354	ress = rese = 0;
264		355
265	if (length < 0)	356	close (respipe [0]);
266	croak ("length must not be negative");	357	close (respipe [1]);
		358	create_pipe ();
267		359
268	Newz (0, req, 1, aio_cb);	360	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	}	361	}
		362
		363	/*****************************************************************************/
		364	/* work around various missing functions */
		365
		366	#if !HAVE_PREADWRITE
		367	# define pread aio_pread
		368	# define pwrite aio_pwrite
		369
		370	/*
		371	* make our pread/pwrite safe against themselves, but not against
		372	* normal read/write by using a mutex. slows down execution a lot,
		373	* but that's your problem, not mine.
		374	*/
		375	static pthread_mutex_t iolock = PTHREAD_MUTEX_INITIALIZER;
		376
		377	static ssize_t
		378	pread (int fd, void *buf, size_t count, off_t offset)
		379	{
		380	ssize_t res;
		381	off_t ooffset;
		382
		383	pthread_mutex_lock (&iolock);
		384	ooffset = lseek (fd, 0, SEEK_CUR);
		385	lseek (fd, offset, SEEK_SET);
		386	res = read (fd, buf, count);
		387	lseek (fd, ooffset, SEEK_SET);
		388	pthread_mutex_unlock (&iolock);
		389
		390	return res;
		391	}
		392
		393	static ssize_t
		394	pwrite (int fd, void *buf, size_t count, off_t offset)
		395	{
		396	ssize_t res;
		397	off_t ooffset;
		398
		399	pthread_mutex_lock (&iolock);
		400	ooffset = lseek (fd, 0, SEEK_CUR);
		401	lseek (fd, offset, SEEK_SET);
		402	res = write (fd, buf, count);
		403	lseek (fd, offset, SEEK_SET);
		404	pthread_mutex_unlock (&iolock);
		405
		406	return res;
		407	}
		408	#endif
		409
		410	#if !HAVE_FDATASYNC
		411	# define fdatasync fsync
		412	#endif
		413
		414	#if !HAVE_READAHEAD
		415	# define readahead aio_readahead
		416
		417	static char readahead_buf[4096];
		418
		419	static ssize_t
		420	readahead (int fd, off_t offset, size_t count)
		421	{
		422	while (count > 0)
		423	{
		424	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
		425
		426	pread (fd, readahead_buf, len, offset);
		427	offset += len;
		428	count -= len;
		429	}
		430
		431	errno = 0;
		432	}
		433	#endif
		434
		435	/* sendfile always needs emulation */
		436	static ssize_t
		437	sendfile_ (int ofd, int ifd, off_t offset, size_t count)
		438	{
		439	ssize_t res;
		440
		441	if (!count)
		442	return 0;
		443
		444	#if __linux
		445	res = sendfile (ofd, ifd, &offset, count);
		446
		447	#elif __freebsd
		448	/*
		449	* Of course, the freebsd sendfile is a dire hack with no thoughts
		450	* wasted on making it similar to other i/o functions.
		451	*/
		452	{
		453	off_t sbytes;
		454	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
		455
		456	if (!res && errno == EAGAIN)
		457	/* maybe on others, too, as usual, the manpage leaves you guessing */
		458	res = sbytes;
		459	}
		460
		461	#elif __hpux
		462	res = sendfile (ofd, ifd, offset, count, 0, 0);
		463
		464	#else
		465	res = -1;
		466	errno = ENOSYS;
		467	#endif
		468
		469	if (res < 0 && (errno == ENOSYS \|\| errno == EINVAL \|\| errno == ENOTSOCK))
		470	{
		471	/* emulate sendfile. this is a major pain in the ass */
		472	char *buf = malloc (4096);
		473	res = 0;
		474
		475	for (;;)
		476	{
		477	ssize_t cnt;
		478
		479	cnt = pread (ifd, buf, 4096, offset);
		480
		481	if (cnt <= 0)
		482	{
		483	if (cnt && !res) res = -1;
		484	break;
		485	}
		486
		487	cnt = write (ofd, buf, cnt);
		488
		489	if (cnt <= 0)
		490	{
		491	if (cnt && !res) res = -1;
		492	break;
		493	}
		494
		495	offset += cnt;
		496	res += cnt;
		497	}
		498
		499	{
		500	int errorno = errno;
		501	free (buf);
		502	errno = errorno;
		503	}
		504	}
		505
		506	return res;
		507	}
		508
		509	/*****************************************************************************/
283		510
284	static void *	511	static void *
285	aio_proc (void *thr_arg)	512	aio_proc (void *thr_arg)
286	{	513	{
287	aio_req req;	514	aio_req req;
…		…
315		542
316	switch (type)	543	switch (type)
317	{	544	{
318	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;	545	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;	546	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
320	#if SYS_readahead	547
321	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	548	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
322	#else	549	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		550
326	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	551	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
327	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	552	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
328	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	553	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
329		554
330	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;	555	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
331	case REQ_CLOSE: req->result = close (req->fd); break;	556	case REQ_CLOSE: req->result = close (req->fd); break;
332	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	557	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
		558	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
		559	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
333		560
		561	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
334	case REQ_FSYNC: req->result = fsync (req->fd); break;	562	case REQ_FSYNC: req->result = fsync (req->fd); break;
335	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
336		563
337	case REQ_QUIT:	564	case REQ_QUIT:
338	break;	565	break;
339		566
340	default:	567	default:
…		…
366	while (type != REQ_QUIT);	593	while (type != REQ_QUIT);
367		594
368	return 0;	595	return 0;
369	}	596	}
370		597
		598	#define dREQ \
		599	aio_req req; \
		600	\
		601	if (SvOK (callback) && !SvROK (callback)) \
		602	croak ("clalback must be undef or of reference type"); \
		603	\
		604	Newz (0, req, 1, aio_cb); \
		605	if (!req) \
		606	croak ("out of memory during aio_req allocation"); \
		607	\
		608	req->callback = newSVsv (callback);
		609
371	MODULE = IO::AIO PACKAGE = IO::AIO	610	MODULE = IO::AIO PACKAGE = IO::AIO
372		611
373	PROTOTYPES: ENABLE	612	PROTOTYPES: ENABLE
374		613
375	BOOT:	614	BOOT:
376	{	615	{
377	if (pipe (respipe))	616	create_pipe ();
378	croak ("unable to initialize result pipe");	617	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	}	618	}
386		619
387	void	620	void
388	min_parallel(nthreads)	621	min_parallel(nthreads)
389	int nthreads	622	int nthreads
390	PROTOTYPE: $	623	PROTOTYPE: $
391	CODE:
392	while (nthreads > started)
393	start_thread ();
394		624
395	void	625	void
396	max_parallel(nthreads)	626	max_parallel(nthreads)
397	int nthreads	627	int nthreads
398	PROTOTYPE: $	628	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		629
415	int	630	int
416	max_outstanding(nreqs)	631	max_outstanding(nreqs)
417	int nreqs	632	int nreqs
418	PROTOTYPE: $	633	PROTOTYPE: $
…		…
427	int mode	642	int mode
428	SV * callback	643	SV * callback
429	PROTOTYPE: $$$;$	644	PROTOTYPE: $$$;$
430	CODE:	645	CODE:
431	{	646	{
432	aio_req req;	647	dREQ;
433
434	Newz (0, req, 1, aio_cb);
435
436	if (!req)
437	croak ("out of memory during aio_req allocation");
438		648
439	req->type = REQ_OPEN;	649	req->type = REQ_OPEN;
440	req->data = newSVsv (pathname);	650	req->data = newSVsv (pathname);
441	req->dataptr = SvPV_nolen (req->data);	651	req->dataptr = SvPVbyte_nolen (req->data);
442	req->fd = flags;	652	req->fd = flags;
443	req->mode = mode;	653	req->mode = mode;
444	req->callback = SvREFCNT_inc (callback);
445		654
446	send_req (req);	655	send_req (req);
447	}	656	}
448		657
449	void	658	void
450	aio_close(fh,callback=&PL_sv_undef)	659	aio_close(fh,callback=&PL_sv_undef)
451	InputStream fh	660	SV * fh
452	SV * callback	661	SV * callback
453	PROTOTYPE: $;$	662	PROTOTYPE: $;$
454	ALIAS:	663	ALIAS:
455	aio_close = REQ_CLOSE	664	aio_close = REQ_CLOSE
456	aio_fsync = REQ_FSYNC	665	aio_fsync = REQ_FSYNC
457	aio_fdatasync = REQ_FDATASYNC	666	aio_fdatasync = REQ_FDATASYNC
458	CODE:	667	CODE:
459	{	668	{
460	aio_req req;	669	dREQ;
461
462	Newz (0, req, 1, aio_cb);
463
464	if (!req)
465	croak ("out of memory during aio_req allocation");
466		670
467	req->type = ix;	671	req->type = ix;
		672	req->fh = newSVsv (fh);
468	req->fd = PerlIO_fileno (fh);	673	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
469	req->callback = SvREFCNT_inc (callback);
470		674
471	send_req (req);	675	send_req (req);
472	}	676	}
473		677
474	void	678	void
475	aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	679	aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
476	InputStream fh	680	SV * fh
477	UV offset	681	UV offset
478	IV length	682	UV length
479	SV * data	683	SV * data
480	IV dataoffset	684	UV dataoffset
481	SV * callback	685	SV * callback
		686	ALIAS:
		687	aio_read = REQ_READ
		688	aio_write = REQ_WRITE
482	PROTOTYPE: $$$$$;$	689	PROTOTYPE: $$$$$;$
483	CODE:	690	CODE:
484	read_write (0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);	691	{
		692	aio_req req;
		693	STRLEN svlen;
		694	char *svptr = SvPVbyte (data, svlen);
485		695
		696	SvUPGRADE (data, SVt_PV);
		697	SvPOK_on (data);
		698
		699	if (dataoffset < 0)
		700	dataoffset += svlen;
		701
		702	if (dataoffset < 0 \|\| dataoffset > svlen)
		703	croak ("data offset outside of string");
		704
		705	if (ix == REQ_WRITE)
		706	{
		707	/* write: check length and adjust. */
		708	if (length < 0 \|\| length + dataoffset > svlen)
		709	length = svlen - dataoffset;
		710	}
		711	else
		712	{
		713	/* read: grow scalar as necessary */
		714	svptr = SvGROW (data, length + dataoffset);
		715	}
		716
		717	if (length < 0)
		718	croak ("length must not be negative");
		719
		720	{
		721	dREQ;
		722
		723	req->type = ix;
		724	req->fh = newSVsv (fh);
		725	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
		726	: IoOFP (sv_2io (fh)));
		727	req->offset = offset;
		728	req->length = length;
		729	req->data = SvREFCNT_inc (data);
		730	req->dataptr = (char *)svptr + dataoffset;
		731
		732	if (!SvREADONLY (data))
		733	{
		734	SvREADONLY_on (data);
		735	req->data2ptr = (void *)data;
		736	}
		737
		738	send_req (req);
		739	}
		740	}
		741
486	void	742	void
487	aio_write(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	743	aio_sendfile(out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)
488	OutputStream fh	744	SV * out_fh
		745	SV * in_fh
489	UV offset	746	UV in_offset
490	IV length	747	UV length
491	SV * data
492	IV dataoffset
493	SV * callback	748	SV * callback
494	PROTOTYPE: $$$$$;$	749	PROTOTYPE: $$$$;$
495	CODE:	750	CODE:
496	read_write (1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);	751	{
		752	dREQ;
		753
		754	req->type = REQ_SENDFILE;
		755	req->fh = newSVsv (out_fh);
		756	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
		757	req->fh2 = newSVsv (in_fh);
		758	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
		759	req->offset = in_offset;
		760	req->length = length;
		761
		762	send_req (req);
		763	}
497		764
498	void	765	void
499	aio_readahead(fh,offset,length,callback=&PL_sv_undef)	766	aio_readahead(fh,offset,length,callback=&PL_sv_undef)
500	InputStream fh	767	SV * fh
501	UV offset	768	UV offset
502	IV length	769	IV length
503	SV * callback	770	SV * callback
504	PROTOTYPE: $$$;$	771	PROTOTYPE: $$$;$
505	CODE:	772	CODE:
506	{	773	{
507	aio_req req;	774	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		775
517	req->type = REQ_READAHEAD;	776	req->type = REQ_READAHEAD;
		777	req->fh = newSVsv (fh);
518	req->fd = PerlIO_fileno (fh);	778	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
519	req->offset = offset;	779	req->offset = offset;
520	req->length = length;	780	req->length = length;
521	req->callback = SvREFCNT_inc (callback);
522		781
523	send_req (req);	782	send_req (req);
524	}	783	}
525		784
526	void	785	void
…		…
530	ALIAS:	789	ALIAS:
531	aio_stat = REQ_STAT	790	aio_stat = REQ_STAT
532	aio_lstat = REQ_LSTAT	791	aio_lstat = REQ_LSTAT
533	CODE:	792	CODE:
534	{	793	{
535	aio_req req;	794	dREQ;
536
537	Newz (0, req, 1, aio_cb);
538
539	if (!req)
540	croak ("out of memory during aio_req allocation");
541		795
542	New (0, req->statdata, 1, Stat_t);	796	New (0, req->statdata, 1, Stat_t);
543
544	if (!req->statdata)	797	if (!req->statdata)
		798	{
		799	free_req (req);
545	croak ("out of memory during aio_req->statdata allocation");	800	croak ("out of memory during aio_req->statdata allocation");
		801	}
546		802
547	if (SvPOK (fh_or_path))	803	if (SvPOK (fh_or_path))
548	{	804	{
549	req->type = ix;	805	req->type = ix;
550	req->data = newSVsv (fh_or_path);	806	req->data = newSVsv (fh_or_path);
551	req->dataptr = SvPV_nolen (req->data);	807	req->dataptr = SvPVbyte_nolen (req->data);
552	}	808	}
553	else	809	else
554	{	810	{
555	req->type = REQ_FSTAT;	811	req->type = REQ_FSTAT;
		812	req->fh = newSVsv (fh_or_path);
556	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	813	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
557	}	814	}
558
559	req->callback = SvREFCNT_inc (callback);
560		815
561	send_req (req);	816	send_req (req);
562	}	817	}
563		818
564	void	819	void
565	aio_unlink(pathname,callback=&PL_sv_undef)	820	aio_unlink(pathname,callback=&PL_sv_undef)
566	SV * pathname	821	SV * pathname
567	SV * callback	822	SV * callback
		823	ALIAS:
		824	aio_unlink = REQ_UNLINK
		825	aio_rmdir = REQ_RMDIR
568	CODE:	826	CODE:
569	{	827	{
570	aio_req req;	828	dREQ;
571		829
572	Newz (0, req, 1, aio_cb);	830	req->type = ix;
		831	req->data = newSVsv (pathname);
		832	req->dataptr = SvPVbyte_nolen (req->data);
573		833
574	if (!req)	834	send_req (req);
575	croak ("out of memory during aio_req allocation");	835	}
		836
		837	void
		838	aio_symlink(oldpath,newpath,callback=&PL_sv_undef)
		839	SV * oldpath
		840	SV * newpath
		841	SV * callback
		842	CODE:
		843	{
		844	dREQ;
576		845
577	req->type = REQ_UNLINK;	846	req->type = REQ_SYMLINK;
		847	req->fh = newSVsv (oldpath);
		848	req->data2ptr = SvPVbyte_nolen (req->fh);
578	req->data = newSVsv (pathname);	849	req->data = newSVsv (newpath);
579	req->dataptr = SvPV_nolen (req->data);	850	req->dataptr = SvPVbyte_nolen (req->data);
580	req->callback = SvREFCNT_inc (callback);
581		851
582	send_req (req);	852	send_req (req);
583	}	853	}
584		854
585	void	855	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 1.34 by root, Tue Aug 23 00:03:14 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 1.34 by root, Tue Aug 23 00:03:14 2005 UTC