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

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.11 by root, Wed Jul 20 21:55:27 2005 UTC vs.
Revision 1.32 by root, Mon Aug 22 23:20:37 2005 UTC

…		…
1	#define _XOPEN_SOURCE 500	1	#define _REENTRANT 1
		2	#include <errno.h>
2		3
3	#include "EXTERN.h"	4	#include "EXTERN.h"
4	#include "perl.h"	5	#include "perl.h"
5	#include "XSUB.h"	6	#include "XSUB.h"
		7
		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 volatile 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 */
		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	}
69		100
70	static void	101	static void
71	poll_wait ()	102	poll_wait ()
72	{	103	{
73	if (nreqs && !ress)	104	if (nreqs && !ress)
…		…
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, prv;	120	aio_req req;
89		121
90	static int rl;//D	122	for (;;)
91	//printf ("%d ENTER\n", ++rl);//D
92
93	pthread_mutex_lock (&reslock);
94
95	{
96	/* read any signals sent by the worker threads */
97	char buf [32];
98	while (read (respipe [0], buf, 32) > 0)
99	;
100	}
101
102	req = ress;
103	ress = rese = 0;
104
105	pthread_mutex_unlock (&reslock);
106
107	while (req)
108	{	123	{
		124	pthread_mutex_lock (&reslock);
		125	req = ress;
		126
		127	if (req)
		128	{
		129	ress = req->next;
		130
		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	}
		140	}
		141
		142	pthread_mutex_unlock (&reslock);
		143
		144	if (!req)
		145	break;
		146
109	nreqs--;	147	nreqs--;
110	//printf ("%d count %d %p->%p\n", rl, count, req, req->next);//D
111		148
112	if (req->type == REQ_QUIT)	149	if (req->type == REQ_QUIT)
113	started--;	150	started--;
114	else	151	else
115	{	152	{
116	int errorno = errno;	153	int errorno = errno;
117	errno = req->errorno;	154	errno = req->errorno;
118		155
119	if (req->type == REQ_READ)	156	if (req->type == REQ_READ)
120	SvCUR_set (req->data, req->dataoffset	157	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
121	+ req->result > 0 ? req->result : 0);
122		158
		159	if (req->data2ptr && (req->type == REQ_READ \|\| req->type == REQ_WRITE))
		160	SvREADONLY_off (req->data);
		161
123	if (req->data)	162	if (req->statdata)
124	SvREFCNT_dec (req->data);
125
126	if (req->type == REQ_STAT \|\| req->type == REQ_LSTAT \|\| req->type == REQ_FSTAT)
127	{	163	{
128	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	164	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
129	PL_laststatval = req->result;	165	PL_laststatval = req->result;
130	PL_statcache = *(req->statdata);	166	PL_statcache = *(req->statdata);
131
132	Safefree (req->statdata);
133	}	167	}
134		168
		169	ENTER;
135	PUSHMARK (SP);	170	PUSHMARK (SP);
136	XPUSHs (sv_2mortal (newSViv (req->result)));	171	XPUSHs (sv_2mortal (newSViv (req->result)));
137		172
138	if (req->type == REQ_OPEN)	173	if (req->type == REQ_OPEN)
139	{	174	{
…		…
142		177
143	PUTBACK;	178	PUTBACK;
144	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);	179	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);
145	SPAGAIN;	180	SPAGAIN;
146		181
147	fh = POPs;	182	fh = SvREFCNT_inc (POPs);
148		183
149	PUSHMARK (SP);	184	PUSHMARK (SP);
150	XPUSHs (fh);	185	XPUSHs (sv_2mortal (fh));
151	}	186	}
152		187
153	if (SvOK (req->callback))	188	if (SvOK (req->callback))
154	{	189	{
155	PUTBACK;	190	PUTBACK;
156	call_sv (req->callback, G_VOID \| G_EVAL);	191	call_sv (req->callback, G_VOID \| G_EVAL);
157	SPAGAIN;	192	SPAGAIN;
		193
		194	if (SvTRUE (ERRSV))
		195	{
		196	free_req (req);
		197	croak (0);
		198	}
158	}	199	}
		200
159		201	LEAVE;
160	if (req->callback)
161	SvREFCNT_dec (req->callback);
162		202
163	errno = errorno;	203	errno = errorno;
164	count++;	204	count++;
165	}	205	}
166		206
167	prv = req;	207	free_req (req);
168	req = req->next;
169	Safefree (prv);
170
171	/* TODO: croak on errors? */
172	}	208	}
173		209
174	//printf ("%d LEAVE %p %p\n", rl--, ress, rese);//D
175	return count;	210	return count;
176	}	211	}
177		212
178	static void aio_proc(void arg);	213	static void aio_proc(void arg);
179		214
…		…
198	}	233	}
199		234
200	static void	235	static void
201	send_req (aio_req req)	236	send_req (aio_req req)
202	{	237	{
		238	while (started < wanted && nreqs >= started)
		239	start_thread ();
		240
203	nreqs++;	241	nreqs++;
204		242
205	pthread_mutex_lock (&reqlock);	243	pthread_mutex_lock (&reqlock);
206		244
207	req->next = 0;	245	req->next = 0;
…		…
215	reqe = reqs = req;	253	reqe = reqs = req;
216		254
217	pthread_cond_signal (&reqwait);	255	pthread_cond_signal (&reqwait);
218	pthread_mutex_unlock (&reqlock);	256	pthread_mutex_unlock (&reqlock);
219		257
220	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)
221	{	300	{
222	poll_wait ();	301	poll_wait ();
223	poll_cb ();	302	poll_cb ();
224	}	303	}
225	}	304	}
226		305
227	static void	306	static void create_pipe ()
228	end_thread (void)
229	{	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	{
230	aio_req req;	332	aio_req prv;
231	New (0, req, 1, aio_cb);
232	req->type = REQ_QUIT;
233		333
234	send_req (req);	334	started = 0;
235	}
236		335
237	static void	336	while (reqs)
238	read_write (int dowrite, int fd, off_t offset, size_t length,
239	SV data, STRLEN dataoffset, SV callback)
240	{
241	aio_req req;
242	STRLEN svlen;
243	char *svptr = SvPV (data, svlen);
244
245	SvUPGRADE (data, SVt_PV);
246	SvPOK_on (data);
247
248	if (dataoffset < 0)
249	dataoffset += svlen;
250
251	if (dataoffset < 0 \|\| dataoffset > svlen)
252	croak ("data offset outside of string");
253
254	if (dowrite)
255	{	337	{
256	/* write: check length and adjust. */	338	prv = reqs;
257	if (length < 0 \|\| length + dataoffset > svlen)	339	reqs = prv->next;
258	length = svlen - dataoffset;	340	free_req (prv);
259	}	341	}
260	else	342
		343	reqs = reqe = 0;
		344
		345	while (ress)
261	{	346	{
262	/* read: grow scalar as necessary */	347	prv = ress;
263	svptr = SvGROW (data, length + dataoffset);	348	ress = prv->next;
		349	free_req (prv);
264	}	350	}
		351
		352	ress = rese = 0;
265		353
266	if (length < 0)	354	close (respipe [0]);
267	croak ("length must not be negative");	355	close (respipe [1]);
		356	create_pipe ();
268		357
269	Newz (0, req, 1, aio_cb);	358	atfork_parent ();
270
271	if (!req)
272	croak ("out of memory during aio_req allocation");
273
274	req->type = dowrite ? REQ_WRITE : REQ_READ;
275	req->fd = fd;
276	req->offset = offset;
277	req->length = length;
278	req->data = SvREFCNT_inc (data);
279	req->dataptr = (char *)svptr + dataoffset;
280	req->callback = SvREFCNT_inc (callback);
281
282	send_req (req);
283	}	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	/*****************************************************************************/
284		507
285	static void *	508	static void *
286	aio_proc (void *thr_arg)	509	aio_proc (void *thr_arg)
287	{	510	{
288	aio_req req;	511	aio_req req;
…		…
316		539
317	switch (type)	540	switch (type)
318	{	541	{
319	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;
320	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;
321	#if SYS_readahead	544
322	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;
323	#else	546	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
324	case REQ_READAHEAD: req->result = -1; errno = ENOSYS; break;
325	#endif
326		547
327	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	548	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
328	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	549	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
329	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	550	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
330		551
331	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;
332	case REQ_CLOSE: req->result = close (req->fd); break;	553	case REQ_CLOSE: req->result = close (req->fd); break;
333	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;
334		557
		558	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
335	case REQ_FSYNC: req->result = fsync (req->fd); break;	559	case REQ_FSYNC: req->result = fsync (req->fd); break;
336	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
337		560
338	case REQ_QUIT:	561	case REQ_QUIT:
339	break;	562	break;
340		563
341	default:	564	default:
…		…
367	while (type != REQ_QUIT);	590	while (type != REQ_QUIT);
368		591
369	return 0;	592	return 0;
370	}	593	}
371		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
372	MODULE = IO::AIO PACKAGE = IO::AIO	607	MODULE = IO::AIO PACKAGE = IO::AIO
373		608
374	PROTOTYPES: ENABLE	609	PROTOTYPES: ENABLE
375		610
376	BOOT:	611	BOOT:
377	{	612	{
378	if (pipe (respipe))	613	create_pipe ();
379	croak ("unable to initialize result pipe");	614	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
380
381	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
382	croak ("cannot set result pipe to nonblocking mode");
383
384	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
385	croak ("cannot set result pipe to nonblocking mode");
386	}	615	}
387		616
388	void	617	void
389	min_parallel(nthreads)	618	min_parallel(nthreads)
390	int nthreads	619	int nthreads
391	PROTOTYPE: $	620	PROTOTYPE: $
392	CODE:
393	while (nthreads > started)
394	start_thread ();
395		621
396	void	622	void
397	max_parallel(nthreads)	623	max_parallel(nthreads)
398	int nthreads	624	int nthreads
399	PROTOTYPE: $	625	PROTOTYPE: $
400	CODE:
401	{
402	int cur = started;
403	while (cur > nthreads)
404	{
405	end_thread ();
406	cur--;
407	}
408
409	while (started > nthreads)
410	{
411	poll_wait ();
412	poll_cb ();
413	}
414	}
415		626
416	int	627	int
417	max_outstanding(nreqs)	628	max_outstanding(nreqs)
418	int nreqs	629	int nreqs
419	PROTOTYPE: $	630	PROTOTYPE: $
…		…
428	int mode	639	int mode
429	SV * callback	640	SV * callback
430	PROTOTYPE: $$$;$	641	PROTOTYPE: $$$;$
431	CODE:	642	CODE:
432	{	643	{
433	aio_req req;	644	dREQ;
434
435	Newz (0, req, 1, aio_cb);
436
437	if (!req)
438	croak ("out of memory during aio_req allocation");
439		645
440	req->type = REQ_OPEN;	646	req->type = REQ_OPEN;
441	req->data = newSVsv (pathname);	647	req->data = newSVsv (pathname);
442	req->dataptr = SvPV_nolen (req->data);	648	req->dataptr = SvPVbyte_nolen (req->data);
443	req->fd = flags;	649	req->fd = flags;
444	req->mode = mode;	650	req->mode = mode;
445	req->callback = SvREFCNT_inc (callback);
446		651
447	send_req (req);	652	send_req (req);
448	}	653	}
449		654
450	void	655	void
451	aio_close(fh,callback=&PL_sv_undef)	656	aio_close(fh,callback=&PL_sv_undef)
452	InputStream fh	657	SV * fh
453	SV * callback	658	SV * callback
454	PROTOTYPE: $;$	659	PROTOTYPE: $;$
455	ALIAS:	660	ALIAS:
456	aio_close = REQ_CLOSE	661	aio_close = REQ_CLOSE
457	aio_fsync = REQ_FSYNC	662	aio_fsync = REQ_FSYNC
458	aio_fdatasync = REQ_FDATASYNC	663	aio_fdatasync = REQ_FDATASYNC
459	CODE:	664	CODE:
460	{	665	{
461	aio_req req;	666	dREQ;
462
463	Newz (0, req, 1, aio_cb);
464
465	if (!req)
466	croak ("out of memory during aio_req allocation");
467		667
468	req->type = ix;	668	req->type = ix;
		669	req->fh = newSVsv (fh);
469	req->fd = PerlIO_fileno (fh);	670	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
470	req->callback = SvREFCNT_inc (callback);
471		671
472	send_req (req);	672	send_req (req);
473	}	673	}
474		674
475	void	675	void
476	aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	676	aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
477	InputStream fh	677	SV * fh
478	UV offset	678	UV offset
479	IV length	679	UV length
480	SV * data	680	SV * data
481	IV dataoffset	681	UV dataoffset
482	SV * callback	682	SV * callback
		683	ALIAS:
		684	aio_read = REQ_READ
		685	aio_write = REQ_WRITE
483	PROTOTYPE: $$$$$;$	686	PROTOTYPE: $$$$$;$
484	CODE:	687	CODE:
485	read_write (0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);	688	{
		689	aio_req req;
		690	STRLEN svlen;
		691	char *svptr = SvPVbyte (data, svlen);
486		692
		693	SvUPGRADE (data, SVt_PV);
		694	SvPOK_on (data);
		695
		696	if (dataoffset < 0)
		697	dataoffset += svlen;
		698
		699	if (dataoffset < 0 \|\| dataoffset > svlen)
		700	croak ("data offset outside of string");
		701
		702	if (ix == REQ_WRITE)
		703	{
		704	/* write: check length and adjust. */
		705	if (length < 0 \|\| length + dataoffset > svlen)
		706	length = svlen - dataoffset;
		707	}
		708	else
		709	{
		710	/* read: grow scalar as necessary */
		711	svptr = SvGROW (data, length + dataoffset);
		712	}
		713
		714	if (length < 0)
		715	croak ("length must not be negative");
		716
		717	{
		718	dREQ;
		719
		720	req->type = ix;
		721	req->fh = newSVsv (fh);
		722	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
		723	: IoOFP (sv_2io (fh)));
		724	req->offset = offset;
		725	req->length = length;
		726	req->data = SvREFCNT_inc (data);
		727	req->dataptr = (char *)svptr + dataoffset;
		728
		729	if (!SvREADONLY (data))
		730	{
		731	SvREADONLY_on (data);
		732	req->data2ptr = (void *)data;
		733	}
		734
		735	send_req (req);
		736	}
		737	}
		738
487	void	739	void
488	aio_write(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	740	aio_sendfile(out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)
489	OutputStream fh	741	SV * out_fh
		742	SV * in_fh
490	UV offset	743	UV in_offset
491	IV length	744	UV length
492	SV * data
493	IV dataoffset
494	SV * callback	745	SV * callback
495	PROTOTYPE: $$$$$;$	746	PROTOTYPE: $$$$;$
496	CODE:	747	CODE:
497	read_write (1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);	748	{
		749	dREQ;
		750
		751	req->type = REQ_SENDFILE;
		752	req->fh = newSVsv (out_fh);
		753	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
		754	req->fh2 = newSVsv (in_fh);
		755	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
		756	req->offset = in_offset;
		757	req->length = length;
		758
		759	send_req (req);
		760	}
498		761
499	void	762	void
500	aio_readahead(fh,offset,length,callback=&PL_sv_undef)	763	aio_readahead(fh,offset,length,callback=&PL_sv_undef)
501	InputStream fh	764	SV * fh
502	UV offset	765	UV offset
503	IV length	766	IV length
504	SV * callback	767	SV * callback
505	PROTOTYPE: $$$;$	768	PROTOTYPE: $$$;$
506	CODE:	769	CODE:
507	{	770	{
508	aio_req req;	771	dREQ;
509
510	if (length < 0)
511	croak ("length must not be negative");
512
513	Newz (0, req, 1, aio_cb);
514
515	if (!req)
516	croak ("out of memory during aio_req allocation");
517		772
518	req->type = REQ_READAHEAD;	773	req->type = REQ_READAHEAD;
		774	req->fh = newSVsv (fh);
519	req->fd = PerlIO_fileno (fh);	775	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
520	req->offset = offset;	776	req->offset = offset;
521	req->length = length;	777	req->length = length;
522	req->callback = SvREFCNT_inc (callback);
523		778
524	send_req (req);	779	send_req (req);
525	}	780	}
526		781
527	void	782	void
…		…
531	ALIAS:	786	ALIAS:
532	aio_stat = REQ_STAT	787	aio_stat = REQ_STAT
533	aio_lstat = REQ_LSTAT	788	aio_lstat = REQ_LSTAT
534	CODE:	789	CODE:
535	{	790	{
536	aio_req req;	791	dREQ;
537
538	Newz (0, req, 1, aio_cb);
539
540	if (!req)
541	croak ("out of memory during aio_req allocation");
542		792
543	New (0, req->statdata, 1, Stat_t);	793	New (0, req->statdata, 1, Stat_t);
544
545	if (!req->statdata)	794	if (!req->statdata)
		795	{
		796	free_req (req);
546	croak ("out of memory during aio_req->statdata allocation");	797	croak ("out of memory during aio_req->statdata allocation");
		798	}
547		799
548	if (SvPOK (fh_or_path))	800	if (SvPOK (fh_or_path))
549	{	801	{
550	req->type = ix;	802	req->type = ix;
551	req->data = newSVsv (fh_or_path);	803	req->data = newSVsv (fh_or_path);
552	req->dataptr = SvPV_nolen (req->data);	804	req->dataptr = SvPVbyte_nolen (req->data);
553	}	805	}
554	else	806	else
555	{	807	{
556	req->type = REQ_FSTAT;	808	req->type = REQ_FSTAT;
		809	req->fh = newSVsv (fh_or_path);
557	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	810	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
558	}	811	}
559
560	req->callback = SvREFCNT_inc (callback);
561		812
562	send_req (req);	813	send_req (req);
563	}	814	}
564		815
565	void	816	void
566	aio_unlink(pathname,callback=&PL_sv_undef)	817	aio_unlink(pathname,callback=&PL_sv_undef)
567	SV * pathname	818	SV * pathname
568	SV * callback	819	SV * callback
		820	ALIAS:
		821	aio_unlink = REQ_UNLINK
		822	aio_rmdir = REQ_RMDIR
569	CODE:	823	CODE:
570	{	824	{
571	aio_req req;	825	dREQ;
572		826
573	Newz (0, req, 1, aio_cb);	827	req->type = ix;
		828	req->data = newSVsv (pathname);
		829	req->dataptr = SvPVbyte_nolen (req->data);
574		830
575	if (!req)	831	send_req (req);
576	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;
577		842
578	req->type = REQ_UNLINK;	843	req->type = REQ_SYMLINK;
		844	req->fh = newSVsv (oldpath);
		845	req->data2ptr = SvPVbyte_nolen (req->fh);
579	req->data = newSVsv (pathname);	846	req->data = newSVsv (newpath);
580	req->dataptr = SvPV_nolen (req->data);	847	req->dataptr = SvPVbyte_nolen (req->data);
581	req->callback = SvREFCNT_inc (callback);
582		848
583	send_req (req);	849	send_req (req);
584	}	850	}
585		851
586	void	852	void

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Comparing IO-AIO/AIO.xs (file contents): Revision 1.11 by root, Wed Jul 20 21:55:27 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 1.11 by root, Wed Jul 20 21:55:27 2005 UTC vs.
Revision 1.32 by root, Mon Aug 22 23:20:37 2005 UTC