[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 1.36 by root, Tue Aug 23 01:18:04 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	# elif __solaris /* not yet */
		29	# include <sys/sendfile.h>
		30	# else
		31	# error sendfile support requested but not available
		32	# endif
16	#endif	33	#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		34
24	#if __ia64	35	#if __ia64
25	# define STACKSIZE 65536	36	# define STACKSIZE 65536
26	#else	37	#else
27	# define STACKSIZE 4096	38	# define STACKSIZE 4096
29		40
30	enum {	41	enum {
31	REQ_QUIT,	42	REQ_QUIT,
32	REQ_OPEN, REQ_CLOSE,	43	REQ_OPEN, REQ_CLOSE,
33	REQ_READ, REQ_WRITE, REQ_READAHEAD,	44	REQ_READ, REQ_WRITE, REQ_READAHEAD,
		45	REQ_SENDFILE,
34	REQ_STAT, REQ_LSTAT, REQ_FSTAT, REQ_UNLINK,	46	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
35	REQ_FSYNC, REQ_FDATASYNC,	47	REQ_FSYNC, REQ_FDATASYNC,
		48	REQ_UNLINK, REQ_RMDIR,
		49	REQ_SYMLINK,
36	};	50	};
37		51
38	typedef struct aio_cb {	52	typedef struct aio_cb {
39	struct aio_cb *volatile next;	53	struct aio_cb *volatile next;
40		54
41	int type;	55	int type;
42		56
43	int fd;	57	int fd, fd2;
44	off_t offset;	58	off_t offset;
45	size_t length;	59	size_t length;
46	ssize_t result;	60	ssize_t result;
47	mode_t mode; /* open */	61	mode_t mode; /* open */
48	int errorno;	62	int errorno;
49	SV data, callback;	63	SV data, callback;
50	void *dataptr;	64	SV fh, fh2;
		65	void dataptr, data2ptr;
51	STRLEN dataoffset;	66	STRLEN dataoffset;
52		67
53	Stat_t *statdata;	68	Stat_t *statdata;
54	} aio_cb;	69	} aio_cb;
55		70
56	typedef aio_cb *aio_req;	71	typedef aio_cb *aio_req;
57		72
58	static int started;	73	static int started, wanted;
59	static int nreqs;	74	static volatile int nreqs;
60	static int max_outstanding = 1<<30;	75	static int max_outstanding = 1<<30;
61	static int respipe [2];	76	static int respipe [2];
62		77
63	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	78	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;
64	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;	79	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
65	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	80	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
66		81
67	static volatile aio_req reqs, reqe; /* queue start, queue end */	82	static volatile aio_req reqs, reqe; /* queue start, queue end */
68	static volatile aio_req ress, rese; /* queue start, queue end */	83	static volatile aio_req ress, rese; /* queue start, queue end */
69		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
70	static void	105	static void
71	poll_wait ()	106	poll_wait ()
72	{	107	{
73	if (!nreqs)	108	if (nreqs && !ress)
74	return;	109	{
75
76	fd_set rfd;	110	fd_set rfd;
77	FD_ZERO(&rfd);	111	FD_ZERO(&rfd);
78	FD_SET(respipe [0], &rfd);	112	FD_SET(respipe [0], &rfd);
79		113
80	select (respipe [0] + 1, &rfd, 0, 0, 0);	114	select (respipe [0] + 1, &rfd, 0, 0, 0);
		115	}
81	}	116	}
82		117
83	static int	118	static int
84	poll_cb ()	119	poll_cb ()
85	{	120	{
86	dSP;	121	dSP;
87	int count = 0;	122	int count = 0;
		123	int do_croak = 0;
88	aio_req req;	124	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		125
97	for (;;)	126	for (;;)
98	{	127	{
99	pthread_mutex_lock (&reslock);	128	pthread_mutex_lock (&reslock);
100
101	req = ress;	129	req = ress;
102		130
103	if (ress)	131	if (req)
104	{	132	{
105	ress = ress->next;	133	ress = req->next;
		134
106	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	}
107	}	144	}
108		145
109	pthread_mutex_unlock (&reslock);	146	pthread_mutex_unlock (&reslock);
110		147
111	if (!req)	148	if (!req)
…		…
119	{	156	{
120	int errorno = errno;	157	int errorno = errno;
121	errno = req->errorno;	158	errno = req->errorno;
122		159
123	if (req->type == REQ_READ)	160	if (req->type == REQ_READ)
124	SvCUR_set (req->data, req->dataoffset	161	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
125	+ req->result > 0 ? req->result : 0);
126		162
		163	if (req->data2ptr && (req->type == REQ_READ \|\| req->type == REQ_WRITE))
		164	SvREADONLY_off (req->data);
		165
127	if (req->data)	166	if (req->statdata)
128	SvREFCNT_dec (req->data);
129
130	if (req->type == REQ_STAT \|\| req->type == REQ_LSTAT \|\| req->type == REQ_FSTAT)
131	{	167	{
132	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	168	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
133	PL_laststatval = req->result;	169	PL_laststatval = req->result;
134	PL_statcache = *(req->statdata);	170	PL_statcache = *(req->statdata);
135
136	Safefree (req->statdata);
137	}	171	}
138		172
		173	ENTER;
139	PUSHMARK (SP);	174	PUSHMARK (SP);
140	XPUSHs (sv_2mortal (newSViv (req->result)));	175	XPUSHs (sv_2mortal (newSViv (req->result)));
141		176
142	if (req->type == REQ_OPEN)	177	if (req->type == REQ_OPEN)
143	{	178	{
…		…
146		181
147	PUTBACK;	182	PUTBACK;
148	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);	183	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);
149	SPAGAIN;	184	SPAGAIN;
150		185
151	fh = POPs;	186	fh = SvREFCNT_inc (POPs);
152		187
153	PUSHMARK (SP);	188	PUSHMARK (SP);
154	XPUSHs (fh);	189	XPUSHs (sv_2mortal (fh));
155	}	190	}
156		191
157	if (SvOK (req->callback))	192	if (SvOK (req->callback))
158	{	193	{
159	PUTBACK;	194	PUTBACK;
160	call_sv (req->callback, G_VOID \| G_EVAL);	195	call_sv (req->callback, G_VOID \| G_EVAL);
161	SPAGAIN;	196	SPAGAIN;
		197
		198	if (SvTRUE (ERRSV))
		199	{
		200	free_req (req);
		201	croak (0);
		202	}
162	}	203	}
		204
163		205	LEAVE;
164	if (req->callback)
165	SvREFCNT_dec (req->callback);
166		206
167	errno = errorno;	207	errno = errorno;
168	count++;	208	count++;
169	}	209	}
170		210
171	Safefree (req);	211	free_req (req);
172	}	212	}
173		213
174	return count;	214	return count;
175	}	215	}
176		216
…		…
197	}	237	}
198		238
199	static void	239	static void
200	send_req (aio_req req)	240	send_req (aio_req req)
201	{	241	{
		242	while (started < wanted && nreqs >= started)
		243	start_thread ();
		244
202	nreqs++;	245	nreqs++;
203		246
204	pthread_mutex_lock (&reqlock);	247	pthread_mutex_lock (&reqlock);
205		248
206	req->next = 0;	249	req->next = 0;
…		…
214	reqe = reqs = req;	257	reqe = reqs = req;
215		258
216	pthread_cond_signal (&reqwait);	259	pthread_cond_signal (&reqwait);
217	pthread_mutex_unlock (&reqlock);	260	pthread_mutex_unlock (&reqlock);
218		261
219	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)
220	{	304	{
221	poll_wait ();	305	poll_wait ();
222	poll_cb ();	306	poll_cb ();
223	}	307	}
224	}	308	}
225		309
226	static void	310	static void create_pipe ()
227	end_thread (void)
228	{	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	{
229	aio_req req;	336	aio_req prv;
230	New (0, req, 1, aio_cb);
231	req->type = REQ_QUIT;
232		337
233	send_req (req);	338	started = 0;
234	}
235		339
236	static void	340	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	{	341	{
255	/* write: check length and adjust. */	342	prv = reqs;
256	if (length < 0 \|\| length + dataoffset > svlen)	343	reqs = prv->next;
257	length = svlen - dataoffset;	344	free_req (prv);
258	}	345	}
259	else	346
		347	reqs = reqe = 0;
		348
		349	while (ress)
260	{	350	{
261	/* read: grow scalar as necessary */	351	prv = ress;
262	svptr = SvGROW (data, length + dataoffset);	352	ress = prv->next;
		353	free_req (prv);
263	}	354	}
		355
		356	ress = rese = 0;
264		357
265	if (length < 0)	358	close (respipe [0]);
266	croak ("length must not be negative");	359	close (respipe [1]);
		360	create_pipe ();
267		361
268	Newz (0, req, 1, aio_cb);	362	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	}	363	}
		364
		365	/*****************************************************************************/
		366	/* work around various missing functions */
		367
		368	#if !HAVE_PREADWRITE
		369	# define pread aio_pread
		370	# define pwrite aio_pwrite
		371
		372	/*
		373	* make our pread/pwrite safe against themselves, but not against
		374	* normal read/write by using a mutex. slows down execution a lot,
		375	* but that's your problem, not mine.
		376	*/
		377	static pthread_mutex_t iolock = PTHREAD_MUTEX_INITIALIZER;
		378
		379	static ssize_t
		380	pread (int fd, void *buf, size_t count, off_t offset)
		381	{
		382	ssize_t res;
		383	off_t ooffset;
		384
		385	pthread_mutex_lock (&iolock);
		386	ooffset = lseek (fd, 0, SEEK_CUR);
		387	lseek (fd, offset, SEEK_SET);
		388	res = read (fd, buf, count);
		389	lseek (fd, ooffset, SEEK_SET);
		390	pthread_mutex_unlock (&iolock);
		391
		392	return res;
		393	}
		394
		395	static ssize_t
		396	pwrite (int fd, void *buf, size_t count, off_t offset)
		397	{
		398	ssize_t res;
		399	off_t ooffset;
		400
		401	pthread_mutex_lock (&iolock);
		402	ooffset = lseek (fd, 0, SEEK_CUR);
		403	lseek (fd, offset, SEEK_SET);
		404	res = write (fd, buf, count);
		405	lseek (fd, offset, SEEK_SET);
		406	pthread_mutex_unlock (&iolock);
		407
		408	return res;
		409	}
		410	#endif
		411
		412	#if !HAVE_FDATASYNC
		413	# define fdatasync fsync
		414	#endif
		415
		416	#if !HAVE_READAHEAD
		417	# define readahead aio_readahead
		418
		419	static char readahead_buf[4096];
		420
		421	static ssize_t
		422	readahead (int fd, off_t offset, size_t count)
		423	{
		424	while (count > 0)
		425	{
		426	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
		427
		428	pread (fd, readahead_buf, len, offset);
		429	offset += len;
		430	count -= len;
		431	}
		432
		433	errno = 0;
		434	}
		435	#endif
		436
		437	/* sendfile always needs emulation */
		438	static ssize_t
		439	sendfile_ (int ofd, int ifd, off_t offset, size_t count)
		440	{
		441	ssize_t res;
		442
		443	if (!count)
		444	return 0;
		445
		446	#if HAVE_SENDFILE
		447	# if __linux
		448	res = sendfile (ofd, ifd, &offset, count);
		449
		450	# elif __freebsd
		451	/*
		452	* Of course, the freebsd sendfile is a dire hack with no thoughts
		453	* wasted on making it similar to other I/O functions.
		454	*/
		455	{
		456	off_t sbytes;
		457	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
		458
		459	if (res < 0 && sbytes)
		460	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
		461	res = sbytes;
		462	}
		463
		464	# elif __hpux
		465	res = sendfile (ofd, ifd, offset, count, 0, 0);
		466
		467	# elif __solaris
		468	{
		469	struct sendfilevec vec;
		470	size_t sbytes;
		471
		472	vec.sfv_fd = ifd;
		473	vec.sfv_flag = 0;
		474	vec.sfv_off = offset;
		475	vec.sfv_len = count;
		476
		477	res = sendfilev (ofd, &vec, 1, &sbytes);
		478
		479	if (res < 0 && sbytes)
		480	res = sbytes;
		481	}
		482
		483	# else
		484	res = -1;
		485	errno = ENOSYS;
		486	# endif
		487	#endif
		488
		489	if (res < 0
		490	&& (errno == ENOSYS \|\| errno == EINVAL \|\| errno == ENOTSOCK
		491	#if __solaris
		492	\|\| errno == EAFNOSUPPORT \|\| errno == EPROTOTYPE
		493	#endif
		494	)
		495	)
		496	{
		497	/* emulate sendfile. this is a major pain in the ass */
		498	char *buf = malloc (4096);
		499	res = 0;
		500
		501	for (;;)
		502	{
		503	ssize_t cnt;
		504
		505	cnt = pread (ifd, buf, 4096, offset);
		506
		507	if (cnt <= 0)
		508	{
		509	if (cnt && !res) res = -1;
		510	break;
		511	}
		512
		513	cnt = write (ofd, buf, cnt);
		514
		515	if (cnt <= 0)
		516	{
		517	if (cnt && !res) res = -1;
		518	break;
		519	}
		520
		521	offset += cnt;
		522	res += cnt;
		523	}
		524
		525	{
		526	int errorno = errno;
		527	free (buf);
		528	errno = errorno;
		529	}
		530	}
		531
		532	return res;
		533	}
		534
		535	/*****************************************************************************/
283		536
284	static void *	537	static void *
285	aio_proc (void *thr_arg)	538	aio_proc (void *thr_arg)
286	{	539	{
287	aio_req req;	540	aio_req req;
…		…
315		568
316	switch (type)	569	switch (type)
317	{	570	{
318	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;	571	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;	572	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
320	#if SYS_readahead	573
321	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	574	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
322	#else	575	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		576
326	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	577	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
327	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	578	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
328	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	579	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
329		580
330	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;	581	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
331	case REQ_CLOSE: req->result = close (req->fd); break;	582	case REQ_CLOSE: req->result = close (req->fd); break;
332	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	583	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
		584	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
		585	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
333		586
		587	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
334	case REQ_FSYNC: req->result = fsync (req->fd); break;	588	case REQ_FSYNC: req->result = fsync (req->fd); break;
335	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
336		589
337	case REQ_QUIT:	590	case REQ_QUIT:
338	break;	591	break;
339		592
340	default:	593	default:
…		…
366	while (type != REQ_QUIT);	619	while (type != REQ_QUIT);
367		620
368	return 0;	621	return 0;
369	}	622	}
370		623
		624	#define dREQ \
		625	aio_req req; \
		626	\
		627	if (SvOK (callback) && !SvROK (callback)) \
		628	croak ("clalback must be undef or of reference type"); \
		629	\
		630	Newz (0, req, 1, aio_cb); \
		631	if (!req) \
		632	croak ("out of memory during aio_req allocation"); \
		633	\
		634	req->callback = newSVsv (callback);
		635
371	MODULE = IO::AIO PACKAGE = IO::AIO	636	MODULE = IO::AIO PACKAGE = IO::AIO
372		637
373	PROTOTYPES: ENABLE	638	PROTOTYPES: ENABLE
374		639
375	BOOT:	640	BOOT:
376	{	641	{
377	if (pipe (respipe))	642	create_pipe ();
378	croak ("unable to initialize result pipe");	643	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	}	644	}
386		645
387	void	646	void
388	min_parallel(nthreads)	647	min_parallel(nthreads)
389	int nthreads	648	int nthreads
390	PROTOTYPE: $	649	PROTOTYPE: $
391	CODE:
392	while (nthreads > started)
393	start_thread ();
394		650
395	void	651	void
396	max_parallel(nthreads)	652	max_parallel(nthreads)
397	int nthreads	653	int nthreads
398	PROTOTYPE: $	654	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		655
415	int	656	int
416	max_outstanding(nreqs)	657	max_outstanding(nreqs)
417	int nreqs	658	int nreqs
418	PROTOTYPE: $	659	PROTOTYPE: $
…		…
427	int mode	668	int mode
428	SV * callback	669	SV * callback
429	PROTOTYPE: $$$;$	670	PROTOTYPE: $$$;$
430	CODE:	671	CODE:
431	{	672	{
432	aio_req req;	673	dREQ;
433
434	Newz (0, req, 1, aio_cb);
435
436	if (!req)
437	croak ("out of memory during aio_req allocation");
438		674
439	req->type = REQ_OPEN;	675	req->type = REQ_OPEN;
440	req->data = newSVsv (pathname);	676	req->data = newSVsv (pathname);
441	req->dataptr = SvPV_nolen (req->data);	677	req->dataptr = SvPVbyte_nolen (req->data);
442	req->fd = flags;	678	req->fd = flags;
443	req->mode = mode;	679	req->mode = mode;
444	req->callback = SvREFCNT_inc (callback);
445		680
446	send_req (req);	681	send_req (req);
447	}	682	}
448		683
449	void	684	void
450	aio_close(fh,callback=&PL_sv_undef)	685	aio_close(fh,callback=&PL_sv_undef)
451	InputStream fh	686	SV * fh
452	SV * callback	687	SV * callback
453	PROTOTYPE: $;$	688	PROTOTYPE: $;$
454	ALIAS:	689	ALIAS:
455	aio_close = REQ_CLOSE	690	aio_close = REQ_CLOSE
456	aio_fsync = REQ_FSYNC	691	aio_fsync = REQ_FSYNC
457	aio_fdatasync = REQ_FDATASYNC	692	aio_fdatasync = REQ_FDATASYNC
458	CODE:	693	CODE:
459	{	694	{
460	aio_req req;	695	dREQ;
461
462	Newz (0, req, 1, aio_cb);
463
464	if (!req)
465	croak ("out of memory during aio_req allocation");
466		696
467	req->type = ix;	697	req->type = ix;
		698	req->fh = newSVsv (fh);
468	req->fd = PerlIO_fileno (fh);	699	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
469	req->callback = SvREFCNT_inc (callback);
470		700
471	send_req (req);	701	send_req (req);
472	}	702	}
473		703
474	void	704	void
475	aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	705	aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
476	InputStream fh	706	SV * fh
477	UV offset	707	UV offset
478	IV length	708	UV length
479	SV * data	709	SV * data
480	IV dataoffset	710	UV dataoffset
481	SV * callback	711	SV * callback
		712	ALIAS:
		713	aio_read = REQ_READ
		714	aio_write = REQ_WRITE
482	PROTOTYPE: $$$$$;$	715	PROTOTYPE: $$$$$;$
483	CODE:	716	CODE:
484	read_write (0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);	717	{
		718	aio_req req;
		719	STRLEN svlen;
		720	char *svptr = SvPVbyte (data, svlen);
485		721
		722	SvUPGRADE (data, SVt_PV);
		723	SvPOK_on (data);
		724
		725	if (dataoffset < 0)
		726	dataoffset += svlen;
		727
		728	if (dataoffset < 0 \|\| dataoffset > svlen)
		729	croak ("data offset outside of string");
		730
		731	if (ix == REQ_WRITE)
		732	{
		733	/* write: check length and adjust. */
		734	if (length < 0 \|\| length + dataoffset > svlen)
		735	length = svlen - dataoffset;
		736	}
		737	else
		738	{
		739	/* read: grow scalar as necessary */
		740	svptr = SvGROW (data, length + dataoffset);
		741	}
		742
		743	if (length < 0)
		744	croak ("length must not be negative");
		745
		746	{
		747	dREQ;
		748
		749	req->type = ix;
		750	req->fh = newSVsv (fh);
		751	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
		752	: IoOFP (sv_2io (fh)));
		753	req->offset = offset;
		754	req->length = length;
		755	req->data = SvREFCNT_inc (data);
		756	req->dataptr = (char *)svptr + dataoffset;
		757
		758	if (!SvREADONLY (data))
		759	{
		760	SvREADONLY_on (data);
		761	req->data2ptr = (void *)data;
		762	}
		763
		764	send_req (req);
		765	}
		766	}
		767
486	void	768	void
487	aio_write(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	769	aio_sendfile(out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)
488	OutputStream fh	770	SV * out_fh
		771	SV * in_fh
489	UV offset	772	UV in_offset
490	IV length	773	UV length
491	SV * data
492	IV dataoffset
493	SV * callback	774	SV * callback
494	PROTOTYPE: $$$$$;$	775	PROTOTYPE: $$$$;$
495	CODE:	776	CODE:
496	read_write (1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);	777	{
		778	dREQ;
		779
		780	req->type = REQ_SENDFILE;
		781	req->fh = newSVsv (out_fh);
		782	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
		783	req->fh2 = newSVsv (in_fh);
		784	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
		785	req->offset = in_offset;
		786	req->length = length;
		787
		788	send_req (req);
		789	}
497		790
498	void	791	void
499	aio_readahead(fh,offset,length,callback=&PL_sv_undef)	792	aio_readahead(fh,offset,length,callback=&PL_sv_undef)
500	InputStream fh	793	SV * fh
501	UV offset	794	UV offset
502	IV length	795	IV length
503	SV * callback	796	SV * callback
504	PROTOTYPE: $$$;$	797	PROTOTYPE: $$$;$
505	CODE:	798	CODE:
506	{	799	{
507	aio_req req;	800	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		801
517	req->type = REQ_READAHEAD;	802	req->type = REQ_READAHEAD;
		803	req->fh = newSVsv (fh);
518	req->fd = PerlIO_fileno (fh);	804	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
519	req->offset = offset;	805	req->offset = offset;
520	req->length = length;	806	req->length = length;
521	req->callback = SvREFCNT_inc (callback);
522		807
523	send_req (req);	808	send_req (req);
524	}	809	}
525		810
526	void	811	void
…		…
530	ALIAS:	815	ALIAS:
531	aio_stat = REQ_STAT	816	aio_stat = REQ_STAT
532	aio_lstat = REQ_LSTAT	817	aio_lstat = REQ_LSTAT
533	CODE:	818	CODE:
534	{	819	{
535	aio_req req;	820	dREQ;
536
537	Newz (0, req, 1, aio_cb);
538
539	if (!req)
540	croak ("out of memory during aio_req allocation");
541		821
542	New (0, req->statdata, 1, Stat_t);	822	New (0, req->statdata, 1, Stat_t);
543
544	if (!req->statdata)	823	if (!req->statdata)
		824	{
		825	free_req (req);
545	croak ("out of memory during aio_req->statdata allocation");	826	croak ("out of memory during aio_req->statdata allocation");
		827	}
546		828
547	if (SvPOK (fh_or_path))	829	if (SvPOK (fh_or_path))
548	{	830	{
549	req->type = ix;	831	req->type = ix;
550	req->data = newSVsv (fh_or_path);	832	req->data = newSVsv (fh_or_path);
551	req->dataptr = SvPV_nolen (req->data);	833	req->dataptr = SvPVbyte_nolen (req->data);
552	}	834	}
553	else	835	else
554	{	836	{
555	req->type = REQ_FSTAT;	837	req->type = REQ_FSTAT;
		838	req->fh = newSVsv (fh_or_path);
556	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	839	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
557	}	840	}
558
559	req->callback = SvREFCNT_inc (callback);
560		841
561	send_req (req);	842	send_req (req);
562	}	843	}
563		844
564	void	845	void
565	aio_unlink(pathname,callback=&PL_sv_undef)	846	aio_unlink(pathname,callback=&PL_sv_undef)
566	SV * pathname	847	SV * pathname
567	SV * callback	848	SV * callback
		849	ALIAS:
		850	aio_unlink = REQ_UNLINK
		851	aio_rmdir = REQ_RMDIR
568	CODE:	852	CODE:
569	{	853	{
570	aio_req req;	854	dREQ;
571		855
572	Newz (0, req, 1, aio_cb);	856	req->type = ix;
		857	req->data = newSVsv (pathname);
		858	req->dataptr = SvPVbyte_nolen (req->data);
573		859
574	if (!req)	860	send_req (req);
575	croak ("out of memory during aio_req allocation");	861	}
		862
		863	void
		864	aio_symlink(oldpath,newpath,callback=&PL_sv_undef)
		865	SV * oldpath
		866	SV * newpath
		867	SV * callback
		868	CODE:
		869	{
		870	dREQ;
576		871
577	req->type = REQ_UNLINK;	872	req->type = REQ_SYMLINK;
		873	req->fh = newSVsv (oldpath);
		874	req->data2ptr = SvPVbyte_nolen (req->fh);
578	req->data = newSVsv (pathname);	875	req->data = newSVsv (newpath);
579	req->dataptr = SvPV_nolen (req->data);	876	req->dataptr = SvPVbyte_nolen (req->data);
580	req->callback = SvREFCNT_inc (callback);
581		877
582	send_req (req);	878	send_req (req);
583	}	879	}
584		880
585	void	881	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 1.36 by root, Tue Aug 23 01:18:04 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 1.36 by root, Tue Aug 23 01:18:04 2005 UTC