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

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.7 by root, Mon Jul 11 01:49:14 2005 UTC vs.
Revision 1.35 by root, Tue Aug 23 01:16:50 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
		8	#include "autoconf/config.h"
		9
		10	#include <pthread.h>
		11
5	#include <sys/types.h>	12	#include <sys/types.h>
6	#include <sys/stat.h>	13	#include <sys/stat.h>
		14
7	#include <unistd.h>	15	#include <unistd.h>
8	#include <fcntl.h>	16	#include <fcntl.h>
9	#include <signal.h>	17	#include <signal.h>
10	#include <sched.h>	18	#include <sched.h>
11	#include <endian.h>
12		19
13	#include <pthread.h>	20	#if HAVE_SENDFILE
		21	# if __linux
		22	# include <sys/sendfile.h>
		23	# elif __freebsd
14	#include <sys/syscall.h>	24	# include <sys/socket.h>
15		25	# include <sys/uio.h>
16	typedef void InputStream; / hack, but 5.6.1 is simply toooo old ;) */	26	# elif __hpux
17	typedef void OutputStream; / hack, but 5.6.1 is simply toooo old ;) */	27	# include <sys/socket.h>
18	typedef void InOutStream; / hack, but 5.6.1 is simply toooo old ;) */	28	# elif __solaris /* not yet */
		29	# include <sys/sendfile.h>
		30	# else
		31	# error sendfile support requested but not available
		32	# endif
		33	#endif
19		34
20	#if __ia64	35	#if __ia64
21	# define STACKSIZE 65536	36	# define STACKSIZE 65536
22	#else	37	#else
23	# define STACKSIZE 4096	38	# define STACKSIZE 4096
25		40
26	enum {	41	enum {
27	REQ_QUIT,	42	REQ_QUIT,
28	REQ_OPEN, REQ_CLOSE,	43	REQ_OPEN, REQ_CLOSE,
29	REQ_READ, REQ_WRITE, REQ_READAHEAD,	44	REQ_READ, REQ_WRITE, REQ_READAHEAD,
		45	REQ_SENDFILE,
30	REQ_STAT, REQ_LSTAT, REQ_FSTAT, REQ_UNLINK,	46	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
31	REQ_FSYNC, REQ_FDATASYNC,	47	REQ_FSYNC, REQ_FDATASYNC,
		48	REQ_UNLINK, REQ_RMDIR,
		49	REQ_SYMLINK,
32	};	50	};
33		51
34	typedef struct aio_cb {	52	typedef struct aio_cb {
35	struct aio_cb *volatile next;	53	struct aio_cb *volatile next;
36		54
37	int type;	55	int type;
38		56
39	int fd;	57	int fd, fd2;
40	off_t offset;	58	off_t offset;
41	size_t length;	59	size_t length;
42	ssize_t result;	60	ssize_t result;
43	mode_t mode; /* open */	61	mode_t mode; /* open */
44	int errorno;	62	int errorno;
45	SV data, callback;	63	SV data, callback;
46	void *dataptr;	64	SV fh, fh2;
		65	void dataptr, data2ptr;
47	STRLEN dataoffset;	66	STRLEN dataoffset;
48		67
49	Stat_t *statdata;	68	Stat_t *statdata;
50	} aio_cb;	69	} aio_cb;
51		70
52	typedef aio_cb *aio_req;	71	typedef aio_cb *aio_req;
53		72
54	static int started;	73	static int started, wanted;
55	static int nreqs;	74	static volatile int nreqs;
56	static int max_outstanding = 1<<30;	75	static int max_outstanding = 1<<30;
57	static int respipe [2];	76	static int respipe [2];
58		77
59	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	78	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;
60	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;	79	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
61	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	80	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
62		81
63	static volatile aio_req reqs, reqe; /* queue start, queue end */	82	static volatile aio_req reqs, reqe; /* queue start, queue end */
64	static volatile aio_req ress, rese; /* queue start, queue end */	83	static volatile aio_req ress, rese; /* queue start, queue end */
65		84
		85	static void free_req (aio_req req)
		86	{
		87	if (req->data)
		88	SvREFCNT_dec (req->data);
		89
		90	if (req->fh)
		91	SvREFCNT_dec (req->fh);
		92
		93	if (req->fh2)
		94	SvREFCNT_dec (req->fh2);
		95
		96	if (req->statdata)
		97	Safefree (req->statdata);
		98
		99	if (req->callback)
		100	SvREFCNT_dec (req->callback);
		101
		102	Safefree (req);
		103	}
		104
66	static void	105	static void
67	poll_wait ()	106	poll_wait ()
68	{	107	{
69	if (!nreqs)	108	if (nreqs && !ress)
70	return;	109	{
71
72	fd_set rfd;	110	fd_set rfd;
73	FD_ZERO(&rfd);	111	FD_ZERO(&rfd);
74	FD_SET(respipe [0], &rfd);	112	FD_SET(respipe [0], &rfd);
75		113
76	select (respipe [0] + 1, &rfd, 0, 0, 0);	114	select (respipe [0] + 1, &rfd, 0, 0, 0);
		115	}
77	}	116	}
78		117
79	static int	118	static int
80	poll_cb ()	119	poll_cb ()
81	{	120	{
82	dSP;	121	dSP;
83	int count = 0;	122	int count = 0;
		123	int do_croak = 0;
84	aio_req req;	124	aio_req req;
85
86	{
87	/* read and signals sent by the worker threads */
88	char buf [32];
89	while (read (respipe [0], buf, 32) > 0)
90	;
91	}
92		125
93	for (;;)	126	for (;;)
94	{	127	{
95	pthread_mutex_lock (&reslock);	128	pthread_mutex_lock (&reslock);
96
97	req = ress;	129	req = ress;
98		130
99	if (ress)	131	if (req)
100	{	132	{
101	ress = ress->next;	133	ress = req->next;
		134
102	if (!ress) rese = 0;	135	if (!ress)
		136	{
		137	/* read any signals sent by the worker threads */
		138	char buf [32];
		139	while (read (respipe [0], buf, 32) == 32)
		140	;
		141
		142	rese = 0;
		143	}
103	}	144	}
104		145
105	pthread_mutex_unlock (&reslock);	146	pthread_mutex_unlock (&reslock);
106		147
107	if (!req)	148	if (!req)
…		…
115	{	156	{
116	int errorno = errno;	157	int errorno = errno;
117	errno = req->errorno;	158	errno = req->errorno;
118		159
119	if (req->type == REQ_READ)	160	if (req->type == REQ_READ)
120	SvCUR_set (req->data, req->dataoffset	161	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
121	+ req->result > 0 ? req->result : 0);
122		162
		163	if (req->data2ptr && (req->type == REQ_READ \|\| req->type == REQ_WRITE))
		164	SvREADONLY_off (req->data);
		165
123	if (req->data)	166	if (req->statdata)
124	SvREFCNT_dec (req->data);
125
126	if (req->type == REQ_STAT \|\| req->type == REQ_LSTAT \|\| req->type == REQ_FSTAT)
127	{	167	{
128	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	168	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
129	PL_laststatval = req->result;	169	PL_laststatval = req->result;
130	PL_statcache = *(req->statdata);	170	PL_statcache = *(req->statdata);
131
132	Safefree (req->statdata);
133	}	171	}
134		172
		173	ENTER;
135	PUSHMARK (SP);	174	PUSHMARK (SP);
136	XPUSHs (sv_2mortal (newSViv (req->result)));	175	XPUSHs (sv_2mortal (newSViv (req->result)));
137		176
138	if (req->type == REQ_OPEN)	177	if (req->type == REQ_OPEN)
139	{	178	{
…		…
142		181
143	PUTBACK;	182	PUTBACK;
144	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);	183	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);
145	SPAGAIN;	184	SPAGAIN;
146		185
147	fh = POPs;	186	fh = SvREFCNT_inc (POPs);
148		187
149	PUSHMARK (SP);	188	PUSHMARK (SP);
150	XPUSHs (fh);	189	XPUSHs (sv_2mortal (fh));
151	}	190	}
152		191
		192	if (SvOK (req->callback))
		193	{
153	PUTBACK;	194	PUTBACK;
154	call_sv (req->callback, G_VOID \| G_EVAL);	195	call_sv (req->callback, G_VOID \| G_EVAL);
155	SPAGAIN;	196	SPAGAIN;
		197
		198	if (SvTRUE (ERRSV))
		199	{
		200	free_req (req);
		201	croak (0);
		202	}
156		203	}
157	if (req->callback)	204
158	SvREFCNT_dec (req->callback);	205	LEAVE;
159		206
160	errno = errorno;	207	errno = errorno;
161	count++;	208	count++;
162	}	209	}
163		210
164	Safefree (req);	211	free_req (req);
165	}	212	}
166		213
167	return count;	214	return count;
168	}	215	}
169		216
…		…
190	}	237	}
191		238
192	static void	239	static void
193	send_req (aio_req req)	240	send_req (aio_req req)
194	{	241	{
		242	while (started < wanted && nreqs >= started)
		243	start_thread ();
		244
195	nreqs++;	245	nreqs++;
196		246
197	pthread_mutex_lock (&reqlock);	247	pthread_mutex_lock (&reqlock);
198		248
199	req->next = 0;	249	req->next = 0;
…		…
207	reqe = reqs = req;	257	reqe = reqs = req;
208		258
209	pthread_cond_signal (&reqwait);	259	pthread_cond_signal (&reqwait);
210	pthread_mutex_unlock (&reqlock);	260	pthread_mutex_unlock (&reqlock);
211		261
212	while (nreqs > max_outstanding)	262	if (nreqs > max_outstanding)
		263	for (;;)
		264	{
		265	poll_cb ();
		266
		267	if (nreqs <= max_outstanding)
		268	break;
		269
		270	poll_wait ();
		271	}
		272	}
		273
		274	static void
		275	end_thread (void)
		276	{
		277	aio_req req;
		278	Newz (0, req, 1, aio_cb);
		279	req->type = REQ_QUIT;
		280
		281	send_req (req);
		282	}
		283
		284	static void min_parallel (int nthreads)
		285	{
		286	if (wanted < nthreads)
		287	wanted = nthreads;
		288	}
		289
		290	static void max_parallel (int nthreads)
		291	{
		292	int cur = started;
		293
		294	if (wanted > nthreads)
		295	wanted = nthreads;
		296
		297	while (cur > wanted)
		298	{
		299	end_thread ();
		300	cur--;
		301	}
		302
		303	while (started > wanted)
213	{	304	{
214	poll_wait ();	305	poll_wait ();
215	poll_cb ();	306	poll_cb ();
216	}	307	}
217	}	308	}
218		309
219	static void	310	static void create_pipe ()
220	end_thread (void)
221	{	311	{
		312	if (pipe (respipe))
		313	croak ("unable to initialize result pipe");
		314
		315	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
		316	croak ("cannot set result pipe to nonblocking mode");
		317
		318	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
		319	croak ("cannot set result pipe to nonblocking mode");
		320	}
		321
		322	static void atfork_prepare (void)
		323	{
		324	pthread_mutex_lock (&reqlock);
		325	pthread_mutex_lock (&reslock);
		326	}
		327
		328	static void atfork_parent (void)
		329	{
		330	pthread_mutex_unlock (&reslock);
		331	pthread_mutex_unlock (&reqlock);
		332	}
		333
		334	static void atfork_child (void)
		335	{
222	aio_req req;	336	aio_req prv;
223	New (0, req, 1, aio_cb);
224	req->type = REQ_QUIT;
225		337
226	send_req (req);	338	started = 0;
227	}
228		339
229	static void	340	while (reqs)
230	read_write (int dowrite, int fd, off_t offset, size_t length,
231	SV data, STRLEN dataoffset, SV callback)
232	{
233	aio_req req;
234	STRLEN svlen;
235	char *svptr = SvPV (data, svlen);
236
237	SvUPGRADE (data, SVt_PV);
238	SvPOK_on (data);
239
240	if (dataoffset < 0)
241	dataoffset += svlen;
242
243	if (dataoffset < 0 \|\| dataoffset > svlen)
244	croak ("data offset outside of string");
245
246	if (dowrite)
247	{	341	{
248	/* write: check length and adjust. */	342	prv = reqs;
249	if (length < 0 \|\| length + dataoffset > svlen)	343	reqs = prv->next;
250	length = svlen - dataoffset;	344	free_req (prv);
251	}	345	}
252	else	346
		347	reqs = reqe = 0;
		348
		349	while (ress)
253	{	350	{
254	/* read: grow scalar as necessary */	351	prv = ress;
255	svptr = SvGROW (data, length + dataoffset);	352	ress = prv->next;
		353	free_req (prv);
256	}	354	}
		355
		356	ress = rese = 0;
257		357
258	if (length < 0)	358	close (respipe [0]);
259	croak ("length must not be negative");	359	close (respipe [1]);
		360	create_pipe ();
260		361
261	Newz (0, req, 1, aio_cb);	362	atfork_parent ();
262
263	if (!req)
264	croak ("out of memory during aio_req allocation");
265
266	req->type = dowrite ? REQ_WRITE : REQ_READ;
267	req->fd = fd;
268	req->offset = offset;
269	req->length = length;
270	req->data = SvREFCNT_inc (data);
271	req->dataptr = (char *)svptr + dataoffset;
272	req->callback = SvREFCNT_inc (callback);
273
274	send_req (req);
275	}	363	}
		364
		365	/* currently noops */
		366	#define LOCK_FD(fd) do { } while (0)
		367	#define UNLOCK_FD(fd) do { } while (0)
		368
		369	/*****************************************************************************/
		370	/* work around various missing functions */
		371
		372	#if !HAVE_PREADWRITE
		373	# define pread aio_pread
		374	# define pwrite aio_pwrite
		375
		376	/*
		377	* make our pread/pwrite safe against themselves, but not against
		378	* normal read/write by using a mutex. slows down execution a lot,
		379	* but that's your problem, not mine.
		380	*/
		381	static pthread_mutex_t iolock = PTHREAD_MUTEX_INITIALIZER;
		382
		383	static ssize_t
		384	pread (int fd, void *buf, size_t count, off_t offset)
		385	{
		386	ssize_t res;
		387	off_t ooffset;
		388
		389	LOCK_FD (fd);
		390	pthread_mutex_lock (&iolock); /* replace by LOCK_FD and private buffer */
		391	ooffset = lseek (fd, 0, SEEK_CUR);
		392	lseek (fd, offset, SEEK_SET);
		393	res = read (fd, buf, count);
		394	lseek (fd, ooffset, SEEK_SET);
		395	pthread_mutex_unlock (&iolock);
		396	UNLOCK_FD (d);
		397
		398	return res;
		399	}
		400
		401	static ssize_t
		402	pwrite (int fd, void *buf, size_t count, off_t offset)
		403	{
		404	ssize_t res;
		405	off_t ooffset;
		406
		407	LOCK_FD (fd);
		408	pthread_mutex_lock (&iolock); /* replace by LOCK_FD and private buffer */
		409	ooffset = lseek (fd, 0, SEEK_CUR);
		410	lseek (fd, offset, SEEK_SET);
		411	res = write (fd, buf, count);
		412	lseek (fd, offset, SEEK_SET);
		413	pthread_mutex_unlock (&iolock);
		414	UNLOCK_FD (d);
		415
		416	return res;
		417	}
		418	#endif
		419
		420	#if !HAVE_FDATASYNC
		421	# define fdatasync fsync
		422	#endif
		423
		424	#if !HAVE_READAHEAD
		425	# define readahead aio_readahead
		426
		427	static char readahead_buf[4096];
		428
		429	static ssize_t
		430	readahead (int fd, off_t offset, size_t count)
		431	{
		432	while (count > 0)
		433	{
		434	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
		435
		436	pread (fd, readahead_buf, len, offset);
		437	offset += len;
		438	count -= len;
		439	}
		440
		441	errno = 0;
		442	}
		443	#endif
		444
		445	/* sendfile always needs emulation */
		446	static ssize_t
		447	sendfile_ (int ofd, int ifd, off_t offset, size_t count)
		448	{
		449	ssize_t res;
		450
		451	if (!count)
		452	return 0;
		453
		454	LOCK_FD (ofd);
		455
		456	#if HAVE_SENDFILE
		457	# if __linux
		458	res = sendfile (ofd, ifd, &offset, count);
		459
		460	# elif __freebsd
		461	/*
		462	* Of course, the freebsd sendfile is a dire hack with no thoughts
		463	* wasted on making it similar to other I/O functions.
		464	*/
		465	{
		466	off_t sbytes;
		467	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
		468
		469	if (res < 0 && sbytes)
		470	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
		471	res = sbytes;
		472	}
		473
		474	# elif __hpux
		475	res = sendfile (ofd, ifd, offset, count, 0, 0);
		476
		477	# elif __solaris
		478	{
		479	struct sendfilevec vec;
		480	size_t sbytes;
		481
		482	vec.sfv_fd = ifd;
		483	vec.sfv_flag = 0;
		484	vec.sfv_off = offset;
		485	vec.sfv_len = count;
		486
		487	res = sendfilev (ofd, &vec, 1, &sbytes);
		488
		489	if (res < 0 && sbytes)
		490	res = sbytes;
		491	}
		492
		493	# else
		494	res = -1;
		495	errno = ENOSYS;
		496	# endif
		497	#endif
		498
		499	if (res < 0
		500	&& (errno == ENOSYS \|\| errno == EINVAL \|\| errno == ENOTSOCK
		501	#if __solaris
		502	\|\| errno == EAFNOSUPPORT \|\| errno == EPROTOTYPE
		503	#endif
		504	)
		505	)
		506	{
		507	/* emulate sendfile. this is a major pain in the ass */
		508	char *buf = malloc (4096);
		509	res = 0;
		510
		511	for (;;)
		512	{
		513	ssize_t cnt;
		514
		515	cnt = pread (ifd, buf, 4096, offset);
		516
		517	if (cnt <= 0)
		518	{
		519	if (cnt && !res) res = -1;
		520	break;
		521	}
		522
		523	cnt = write (ofd, buf, cnt);
		524
		525	if (cnt <= 0)
		526	{
		527	if (cnt && !res) res = -1;
		528	break;
		529	}
		530
		531	offset += cnt;
		532	res += cnt;
		533	}
		534
		535	{
		536	int errorno = errno;
		537	free (buf);
		538	errno = errorno;
		539	}
		540	}
		541
		542	UNLOCK_FD (ofd);
		543
		544	return res;
		545	}
		546
		547	/*****************************************************************************/
276		548
277	static void *	549	static void *
278	aio_proc (void *thr_arg)	550	aio_proc (void *thr_arg)
279	{	551	{
280	aio_req req;	552	aio_req req;
…		…
306		578
307	type = req->type;	579	type = req->type;
308		580
309	switch (type)	581	switch (type)
310	{	582	{
311	case REQ_READ: req->result = pread64 (req->fd, req->dataptr, req->length, req->offset); break;	583	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
312	case REQ_WRITE: req->result = pwrite64 (req->fd, req->dataptr, req->length, req->offset); break;	584	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
313	#if SYS_readahead	585
314	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	586	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
315	#else	587	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
316	case REQ_READAHEAD: req->result = -1; errno = ENOSYS; break;
317	#endif
318		588
319	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	589	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
320	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	590	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
321	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	591	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
322		592
323	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;	593	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
324	case REQ_CLOSE: req->result = close (req->fd); break;	594	case REQ_CLOSE: req->result = close (req->fd); break;
325	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	595	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
		596	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
		597	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
326		598
		599	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
327	case REQ_FSYNC: req->result = fsync (req->fd); break;	600	case REQ_FSYNC: req->result = fsync (req->fd); break;
328	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
329		601
330	case REQ_QUIT:	602	case REQ_QUIT:
331	break;	603	break;
332		604
333	default:	605	default:
…		…
359	while (type != REQ_QUIT);	631	while (type != REQ_QUIT);
360		632
361	return 0;	633	return 0;
362	}	634	}
363		635
		636	#define dREQ \
		637	aio_req req; \
		638	\
		639	if (SvOK (callback) && !SvROK (callback)) \
		640	croak ("clalback must be undef or of reference type"); \
		641	\
		642	Newz (0, req, 1, aio_cb); \
		643	if (!req) \
		644	croak ("out of memory during aio_req allocation"); \
		645	\
		646	req->callback = newSVsv (callback);
		647
364	MODULE = IO::AIO PACKAGE = IO::AIO	648	MODULE = IO::AIO PACKAGE = IO::AIO
365		649
		650	PROTOTYPES: ENABLE
		651
366	BOOT:	652	BOOT:
367	{	653	{
368	if (pipe (respipe))	654	create_pipe ();
369	croak ("unable to initialize result pipe");	655	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
370
371	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
372	croak ("cannot set result pipe to nonblocking mode");
373
374	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
375	croak ("cannot set result pipe to nonblocking mode");
376	}	656	}
377		657
378	void	658	void
379	min_parallel(nthreads)	659	min_parallel(nthreads)
380	int nthreads	660	int nthreads
381	PROTOTYPE: $	661	PROTOTYPE: $
382	CODE:
383	while (nthreads > started)
384	start_thread ();
385		662
386	void	663	void
387	max_parallel(nthreads)	664	max_parallel(nthreads)
388	int nthreads	665	int nthreads
389	PROTOTYPE: $	666	PROTOTYPE: $
390	CODE:
391	{
392	int cur = started;
393	while (cur > nthreads)
394	{
395	end_thread ();
396	cur--;
397	}
398
399	while (started > nthreads)
400	{
401	poll_wait ();
402	poll_cb ();
403	}
404	}
405		667
406	int	668	int
407	max_outstanding(nreqs)	669	max_outstanding(nreqs)
408	int nreqs	670	int nreqs
409	PROTOTYPE: $	671	PROTOTYPE: $
410	CODE:	672	CODE:
411	RETVAL = max_outstanding;	673	RETVAL = max_outstanding;
412	max_outstanding = nreqs;	674	max_outstanding = nreqs;
413		675
414	void	676	void
415	aio_open(pathname,flags,mode,callback)	677	aio_open(pathname,flags,mode,callback=&PL_sv_undef)
416	SV * pathname	678	SV * pathname
417	int flags	679	int flags
418	int mode	680	int mode
419	SV * callback	681	SV * callback
420	PROTOTYPE: $$$$	682	PROTOTYPE: $$$;$
421	CODE:	683	CODE:
422	{	684	{
423	aio_req req;	685	dREQ;
424
425	Newz (0, req, 1, aio_cb);
426
427	if (!req)
428	croak ("out of memory during aio_req allocation");
429		686
430	req->type = REQ_OPEN;	687	req->type = REQ_OPEN;
431	req->data = newSVsv (pathname);	688	req->data = newSVsv (pathname);
432	req->dataptr = SvPV_nolen (req->data);	689	req->dataptr = SvPVbyte_nolen (req->data);
433	req->fd = flags;	690	req->fd = flags;
434	req->mode = mode;	691	req->mode = mode;
435	req->callback = SvREFCNT_inc (callback);
436		692
437	send_req (req);	693	send_req (req);
438	}	694	}
439		695
440	void	696	void
441	aio_close(fh,callback)	697	aio_close(fh,callback=&PL_sv_undef)
442	InputStream fh	698	SV * fh
443	SV * callback	699	SV * callback
444	PROTOTYPE: $$	700	PROTOTYPE: $;$
445	ALIAS:	701	ALIAS:
446	aio_close = REQ_CLOSE	702	aio_close = REQ_CLOSE
447	aio_fsync = REQ_FSYNC	703	aio_fsync = REQ_FSYNC
448	aio_fdatasync = REQ_FDATASYNC	704	aio_fdatasync = REQ_FDATASYNC
449	CODE:	705	CODE:
450	{	706	{
		707	dREQ;
		708
		709	req->type = ix;
		710	req->fh = newSVsv (fh);
		711	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
		712
		713	send_req (req);
		714	}
		715
		716	void
		717	aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
		718	SV * fh
		719	UV offset
		720	UV length
		721	SV * data
		722	UV dataoffset
		723	SV * callback
		724	ALIAS:
		725	aio_read = REQ_READ
		726	aio_write = REQ_WRITE
		727	PROTOTYPE: $$$$$;$
		728	CODE:
		729	{
451	aio_req req;	730	aio_req req;
		731	STRLEN svlen;
		732	char *svptr = SvPVbyte (data, svlen);
452		733
453	Newz (0, req, 1, aio_cb);	734	SvUPGRADE (data, SVt_PV);
		735	SvPOK_on (data);
454		736
455	if (!req)	737	if (dataoffset < 0)
456	croak ("out of memory during aio_req allocation");	738	dataoffset += svlen;
457		739
458	req->type = ix;	740	if (dataoffset < 0 \|\| dataoffset > svlen)
459	req->fd = PerlIO_fileno (fh);	741	croak ("data offset outside of string");
460	req->callback = SvREFCNT_inc (callback);
461		742
462	send_req (req);	743	if (ix == REQ_WRITE)
463	}	744	{
464		745	/* write: check length and adjust. */
465	void	746	if (length < 0 \|\| length + dataoffset > svlen)
466	aio_read(fh,offset,length,data,dataoffset,callback)	747	length = svlen - dataoffset;
467	InputStream fh	748	}
468	UV offset	749	else
469	IV length	750	{
470	SV * data	751	/* read: grow scalar as necessary */
471	IV dataoffset	752	svptr = SvGROW (data, length + dataoffset);
472	SV * callback	753	}
473	PROTOTYPE: $$$$$$
474	CODE:
475	read_write (0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
476
477	void
478	aio_write(fh,offset,length,data,dataoffset,callback)
479	OutputStream fh
480	UV offset
481	IV length
482	SV * data
483	IV dataoffset
484	SV * callback
485	PROTOTYPE: $$$$$$
486	CODE:
487	read_write (1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
488
489	void
490	aio_readahead(fh,offset,length,callback)
491	InputStream fh
492	UV offset
493	IV length
494	SV * callback
495	PROTOTYPE: $$$$
496	CODE:
497	{
498	aio_req req;
499		754
500	if (length < 0)	755	if (length < 0)
501	croak ("length must not be negative");	756	croak ("length must not be negative");
502		757
503	Newz (0, req, 1, aio_cb);	758	{
		759	dREQ;
504		760
505	if (!req)	761	req->type = ix;
506	croak ("out of memory during aio_req allocation");	762	req->fh = newSVsv (fh);
		763	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
		764	: IoOFP (sv_2io (fh)));
		765	req->offset = offset;
		766	req->length = length;
		767	req->data = SvREFCNT_inc (data);
		768	req->dataptr = (char *)svptr + dataoffset;
		769
		770	if (!SvREADONLY (data))
		771	{
		772	SvREADONLY_on (data);
		773	req->data2ptr = (void *)data;
		774	}
		775
		776	send_req (req);
		777	}
		778	}
		779
		780	void
		781	aio_sendfile(out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)
		782	SV * out_fh
		783	SV * in_fh
		784	UV in_offset
		785	UV length
		786	SV * callback
		787	PROTOTYPE: $$$$;$
		788	CODE:
		789	{
		790	dREQ;
		791
		792	req->type = REQ_SENDFILE;
		793	req->fh = newSVsv (out_fh);
		794	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
		795	req->fh2 = newSVsv (in_fh);
		796	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
		797	req->offset = in_offset;
		798	req->length = length;
		799
		800	send_req (req);
		801	}
		802
		803	void
		804	aio_readahead(fh,offset,length,callback=&PL_sv_undef)
		805	SV * fh
		806	UV offset
		807	IV length
		808	SV * callback
		809	PROTOTYPE: $$$;$
		810	CODE:
		811	{
		812	dREQ;
507		813
508	req->type = REQ_READAHEAD;	814	req->type = REQ_READAHEAD;
		815	req->fh = newSVsv (fh);
509	req->fd = PerlIO_fileno (fh);	816	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
510	req->offset = offset;	817	req->offset = offset;
511	req->length = length;	818	req->length = length;
512	req->callback = SvREFCNT_inc (callback);
513		819
514	send_req (req);	820	send_req (req);
515	}	821	}
516		822
517	void	823	void
518	aio_stat(fh_or_path,callback)	824	aio_stat(fh_or_path,callback=&PL_sv_undef)
519	SV * fh_or_path	825	SV * fh_or_path
520	SV * callback	826	SV * callback
521	PROTOTYPE: $$
522	ALIAS:	827	ALIAS:
		828	aio_stat = REQ_STAT
523	aio_lstat = 1	829	aio_lstat = REQ_LSTAT
524	CODE:	830	CODE:
525	{	831	{
526	aio_req req;	832	dREQ;
527
528	Newz (0, req, 1, aio_cb);
529
530	if (!req)
531	croak ("out of memory during aio_req allocation");
532		833
533	New (0, req->statdata, 1, Stat_t);	834	New (0, req->statdata, 1, Stat_t);
534
535	if (!req->statdata)	835	if (!req->statdata)
		836	{
		837	free_req (req);
536	croak ("out of memory during aio_req->statdata allocation");	838	croak ("out of memory during aio_req->statdata allocation");
		839	}
537		840
538	if (SvPOK (fh_or_path))	841	if (SvPOK (fh_or_path))
539	{	842	{
540	req->type = ix ? REQ_LSTAT : REQ_STAT;	843	req->type = ix;
541	req->data = newSVsv (fh_or_path);	844	req->data = newSVsv (fh_or_path);
542	req->dataptr = SvPV_nolen (req->data);	845	req->dataptr = SvPVbyte_nolen (req->data);
543	}	846	}
544	else	847	else
545	{	848	{
546	req->type = REQ_FSTAT;	849	req->type = REQ_FSTAT;
		850	req->fh = newSVsv (fh_or_path);
547	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	851	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
548	}	852	}
549		853
550	req->callback = SvREFCNT_inc (callback);
551
552	send_req (req);	854	send_req (req);
553	}	855	}
554		856
555	void	857	void
556	aio_unlink(pathname,callback)	858	aio_unlink(pathname,callback=&PL_sv_undef)
557	SV * pathname	859	SV * pathname
558	SV * callback	860	SV * callback
559	PROTOTYPE: $$	861	ALIAS:
		862	aio_unlink = REQ_UNLINK
		863	aio_rmdir = REQ_RMDIR
560	CODE:	864	CODE:
561	{	865	{
562	aio_req req;	866	dREQ;
563		867
564	Newz (0, req, 1, aio_cb);	868	req->type = ix;
		869	req->data = newSVsv (pathname);
		870	req->dataptr = SvPVbyte_nolen (req->data);
565		871
566	if (!req)	872	send_req (req);
567	croak ("out of memory during aio_req allocation");	873	}
		874
		875	void
		876	aio_symlink(oldpath,newpath,callback=&PL_sv_undef)
		877	SV * oldpath
		878	SV * newpath
		879	SV * callback
		880	CODE:
		881	{
		882	dREQ;
568		883
569	req->type = REQ_UNLINK;	884	req->type = REQ_SYMLINK;
		885	req->fh = newSVsv (oldpath);
		886	req->data2ptr = SvPVbyte_nolen (req->fh);
570	req->data = newSVsv (pathname);	887	req->data = newSVsv (newpath);
571	req->dataptr = SvPV_nolen (req->data);	888	req->dataptr = SvPVbyte_nolen (req->data);
572	req->callback = SvREFCNT_inc (callback);
573		889
574	send_req (req);	890	send_req (req);
575	}	891	}
576		892
577	void	893	void

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Comparing IO-AIO/AIO.xs (file contents): Revision 1.7 by root, Mon Jul 11 01:49:14 2005 UTC vs. Revision 1.35 by root, Tue Aug 23 01:16:50 2005 UTC

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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.7 by root, Mon Jul 11 01:49:14 2005 UTC vs.
Revision 1.35 by root, Tue Aug 23 01:16:50 2005 UTC