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

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.8 by root, Mon Jul 11 02:53:59 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
		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
153	if (SvOK (req->callback))	192	if (SvOK (req->callback))
154	{	193	{
155	PUTBACK;	194	PUTBACK;
156	call_sv (req->callback, G_VOID \| G_EVAL);	195	call_sv (req->callback, G_VOID \| G_EVAL);
157	SPAGAIN;	196	SPAGAIN;
		197
		198	if (SvTRUE (ERRSV))
		199	{
		200	free_req (req);
		201	croak (0);
		202	}
158	}	203	}
		204
159		205	LEAVE;
160	if (req->callback)
161	SvREFCNT_dec (req->callback);
162		206
163	errno = errorno;	207	errno = errorno;
164	count++;	208	count++;
165	}	209	}
166		210
167	Safefree (req);	211	free_req (req);
168	}	212	}
169		213
170	return count;	214	return count;
171	}	215	}
172		216
…		…
193	}	237	}
194		238
195	static void	239	static void
196	send_req (aio_req req)	240	send_req (aio_req req)
197	{	241	{
		242	while (started < wanted && nreqs >= started)
		243	start_thread ();
		244
198	nreqs++;	245	nreqs++;
199		246
200	pthread_mutex_lock (&reqlock);	247	pthread_mutex_lock (&reqlock);
201		248
202	req->next = 0;	249	req->next = 0;
…		…
210	reqe = reqs = req;	257	reqe = reqs = req;
211		258
212	pthread_cond_signal (&reqwait);	259	pthread_cond_signal (&reqwait);
213	pthread_mutex_unlock (&reqlock);	260	pthread_mutex_unlock (&reqlock);
214		261
215	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)
216	{	304	{
217	poll_wait ();	305	poll_wait ();
218	poll_cb ();	306	poll_cb ();
219	}	307	}
220	}	308	}
221		309
222	static void	310	static void create_pipe ()
223	end_thread (void)
224	{	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	{
225	aio_req req;	336	aio_req prv;
226	New (0, req, 1, aio_cb);
227	req->type = REQ_QUIT;
228		337
229	send_req (req);	338	started = 0;
230	}
231		339
232	static void	340	while (reqs)
233	read_write (int dowrite, int fd, off_t offset, size_t length,
234	SV data, STRLEN dataoffset, SV callback)
235	{
236	aio_req req;
237	STRLEN svlen;
238	char *svptr = SvPV (data, svlen);
239
240	SvUPGRADE (data, SVt_PV);
241	SvPOK_on (data);
242
243	if (dataoffset < 0)
244	dataoffset += svlen;
245
246	if (dataoffset < 0 \|\| dataoffset > svlen)
247	croak ("data offset outside of string");
248
249	if (dowrite)
250	{	341	{
251	/* write: check length and adjust. */	342	prv = reqs;
252	if (length < 0 \|\| length + dataoffset > svlen)	343	reqs = prv->next;
253	length = svlen - dataoffset;	344	free_req (prv);
254	}	345	}
255	else	346
		347	reqs = reqe = 0;
		348
		349	while (ress)
256	{	350	{
257	/* read: grow scalar as necessary */	351	prv = ress;
258	svptr = SvGROW (data, length + dataoffset);	352	ress = prv->next;
		353	free_req (prv);
259	}	354	}
		355
		356	ress = rese = 0;
260		357
261	if (length < 0)	358	close (respipe [0]);
262	croak ("length must not be negative");	359	close (respipe [1]);
		360	create_pipe ();
263		361
264	Newz (0, req, 1, aio_cb);	362	atfork_parent ();
265
266	if (!req)
267	croak ("out of memory during aio_req allocation");
268
269	req->type = dowrite ? REQ_WRITE : REQ_READ;
270	req->fd = fd;
271	req->offset = offset;
272	req->length = length;
273	req->data = SvREFCNT_inc (data);
274	req->dataptr = (char *)svptr + dataoffset;
275	req->callback = SvREFCNT_inc (callback);
276
277	send_req (req);
278	}	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	/*****************************************************************************/
279		536
280	static void *	537	static void *
281	aio_proc (void *thr_arg)	538	aio_proc (void *thr_arg)
282	{	539	{
283	aio_req req;	540	aio_req req;
…		…
309		566
310	type = req->type;	567	type = req->type;
311		568
312	switch (type)	569	switch (type)
313	{	570	{
314	case REQ_READ: req->result = pread64 (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;
315	case REQ_WRITE: req->result = pwrite64 (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;
316	#if SYS_readahead	573
317	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;
318	#else	575	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
319	case REQ_READAHEAD: req->result = -1; errno = ENOSYS; break;
320	#endif
321		576
322	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	577	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
323	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	578	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
324	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	579	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
325		580
326	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;
327	case REQ_CLOSE: req->result = close (req->fd); break;	582	case REQ_CLOSE: req->result = close (req->fd); break;
328	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;
329		586
		587	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
330	case REQ_FSYNC: req->result = fsync (req->fd); break;	588	case REQ_FSYNC: req->result = fsync (req->fd); break;
331	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
332		589
333	case REQ_QUIT:	590	case REQ_QUIT:
334	break;	591	break;
335		592
336	default:	593	default:
…		…
362	while (type != REQ_QUIT);	619	while (type != REQ_QUIT);
363		620
364	return 0;	621	return 0;
365	}	622	}
366		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
367	MODULE = IO::AIO PACKAGE = IO::AIO	636	MODULE = IO::AIO PACKAGE = IO::AIO
368		637
369	PROTOTYPES: ENABLE	638	PROTOTYPES: ENABLE
370		639
371	BOOT:	640	BOOT:
372	{	641	{
373	if (pipe (respipe))	642	create_pipe ();
374	croak ("unable to initialize result pipe");	643	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
375
376	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
377	croak ("cannot set result pipe to nonblocking mode");
378
379	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
380	croak ("cannot set result pipe to nonblocking mode");
381	}	644	}
382		645
383	void	646	void
384	min_parallel(nthreads)	647	min_parallel(nthreads)
385	int nthreads	648	int nthreads
386	PROTOTYPE: $	649	PROTOTYPE: $
387	CODE:
388	while (nthreads > started)
389	start_thread ();
390		650
391	void	651	void
392	max_parallel(nthreads)	652	max_parallel(nthreads)
393	int nthreads	653	int nthreads
394	PROTOTYPE: $	654	PROTOTYPE: $
395	CODE:
396	{
397	int cur = started;
398	while (cur > nthreads)
399	{
400	end_thread ();
401	cur--;
402	}
403
404	while (started > nthreads)
405	{
406	poll_wait ();
407	poll_cb ();
408	}
409	}
410		655
411	int	656	int
412	max_outstanding(nreqs)	657	max_outstanding(nreqs)
413	int nreqs	658	int nreqs
414	PROTOTYPE: $	659	PROTOTYPE: $
…		…
423	int mode	668	int mode
424	SV * callback	669	SV * callback
425	PROTOTYPE: $$$;$	670	PROTOTYPE: $$$;$
426	CODE:	671	CODE:
427	{	672	{
428	aio_req req;	673	dREQ;
429
430	Newz (0, req, 1, aio_cb);
431
432	if (!req)
433	croak ("out of memory during aio_req allocation");
434		674
435	req->type = REQ_OPEN;	675	req->type = REQ_OPEN;
436	req->data = newSVsv (pathname);	676	req->data = newSVsv (pathname);
437	req->dataptr = SvPV_nolen (req->data);	677	req->dataptr = SvPVbyte_nolen (req->data);
438	req->fd = flags;	678	req->fd = flags;
439	req->mode = mode;	679	req->mode = mode;
440	req->callback = SvREFCNT_inc (callback);
441		680
442	send_req (req);	681	send_req (req);
443	}	682	}
444		683
445	void	684	void
446	aio_close(fh,callback=&PL_sv_undef)	685	aio_close(fh,callback=&PL_sv_undef)
447	InputStream fh	686	SV * fh
448	SV * callback	687	SV * callback
449	PROTOTYPE: $;$	688	PROTOTYPE: $;$
450	ALIAS:	689	ALIAS:
451	aio_close = REQ_CLOSE	690	aio_close = REQ_CLOSE
452	aio_fsync = REQ_FSYNC	691	aio_fsync = REQ_FSYNC
453	aio_fdatasync = REQ_FDATASYNC	692	aio_fdatasync = REQ_FDATASYNC
454	CODE:	693	CODE:
455	{	694	{
456	aio_req req;	695	dREQ;
457
458	Newz (0, req, 1, aio_cb);
459
460	if (!req)
461	croak ("out of memory during aio_req allocation");
462		696
463	req->type = ix;	697	req->type = ix;
		698	req->fh = newSVsv (fh);
464	req->fd = PerlIO_fileno (fh);	699	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
465	req->callback = SvREFCNT_inc (callback);
466		700
467	send_req (req);	701	send_req (req);
468	}	702	}
469		703
470	void	704	void
471	aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	705	aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
472	InputStream fh	706	SV * fh
473	UV offset	707	UV offset
474	IV length	708	UV length
475	SV * data	709	SV * data
476	IV dataoffset	710	UV dataoffset
477	SV * callback	711	SV * callback
		712	ALIAS:
		713	aio_read = REQ_READ
		714	aio_write = REQ_WRITE
478	PROTOTYPE: $$$$$;$	715	PROTOTYPE: $$$$$;$
479	CODE:	716	CODE:
480	read_write (0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);	717	{
		718	aio_req req;
		719	STRLEN svlen;
		720	char *svptr = SvPVbyte (data, svlen);
481		721
		722	SvUPGRADE (data, SVt_PV);
		723	SvPOK_on (data);
		724
		725	if (dataoffset < 0)
		726	dataoffset += svlen;
		727
		728	if (dataoffset < 0 \|\| dataoffset > svlen)
		729	croak ("data offset outside of string");
		730
		731	if (ix == REQ_WRITE)
		732	{
		733	/* write: check length and adjust. */
		734	if (length < 0 \|\| length + dataoffset > svlen)
		735	length = svlen - dataoffset;
		736	}
		737	else
		738	{
		739	/* read: grow scalar as necessary */
		740	svptr = SvGROW (data, length + dataoffset);
		741	}
		742
		743	if (length < 0)
		744	croak ("length must not be negative");
		745
		746	{
		747	dREQ;
		748
		749	req->type = ix;
		750	req->fh = newSVsv (fh);
		751	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
		752	: IoOFP (sv_2io (fh)));
		753	req->offset = offset;
		754	req->length = length;
		755	req->data = SvREFCNT_inc (data);
		756	req->dataptr = (char *)svptr + dataoffset;
		757
		758	if (!SvREADONLY (data))
		759	{
		760	SvREADONLY_on (data);
		761	req->data2ptr = (void *)data;
		762	}
		763
		764	send_req (req);
		765	}
		766	}
		767
482	void	768	void
483	aio_write(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	769	aio_sendfile(out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)
484	OutputStream fh	770	SV * out_fh
		771	SV * in_fh
485	UV offset	772	UV in_offset
486	IV length	773	UV length
487	SV * data
488	IV dataoffset
489	SV * callback	774	SV * callback
490	PROTOTYPE: $$$$$;$	775	PROTOTYPE: $$$$;$
491	CODE:	776	CODE:
492	read_write (1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);	777	{
		778	dREQ;
		779
		780	req->type = REQ_SENDFILE;
		781	req->fh = newSVsv (out_fh);
		782	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
		783	req->fh2 = newSVsv (in_fh);
		784	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
		785	req->offset = in_offset;
		786	req->length = length;
		787
		788	send_req (req);
		789	}
493		790
494	void	791	void
495	aio_readahead(fh,offset,length,callback=&PL_sv_undef)	792	aio_readahead(fh,offset,length,callback=&PL_sv_undef)
496	InputStream fh	793	SV * fh
497	UV offset	794	UV offset
498	IV length	795	IV length
499	SV * callback	796	SV * callback
500	PROTOTYPE: $$$;$	797	PROTOTYPE: $$$;$
501	CODE:	798	CODE:
502	{	799	{
503	aio_req req;	800	dREQ;
504
505	if (length < 0)
506	croak ("length must not be negative");
507
508	Newz (0, req, 1, aio_cb);
509
510	if (!req)
511	croak ("out of memory during aio_req allocation");
512		801
513	req->type = REQ_READAHEAD;	802	req->type = REQ_READAHEAD;
		803	req->fh = newSVsv (fh);
514	req->fd = PerlIO_fileno (fh);	804	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
515	req->offset = offset;	805	req->offset = offset;
516	req->length = length;	806	req->length = length;
517	req->callback = SvREFCNT_inc (callback);
518		807
519	send_req (req);	808	send_req (req);
520	}	809	}
521		810
522	void	811	void
…		…
526	ALIAS:	815	ALIAS:
527	aio_stat = REQ_STAT	816	aio_stat = REQ_STAT
528	aio_lstat = REQ_LSTAT	817	aio_lstat = REQ_LSTAT
529	CODE:	818	CODE:
530	{	819	{
531	aio_req req;	820	dREQ;
532
533	Newz (0, req, 1, aio_cb);
534
535	if (!req)
536	croak ("out of memory during aio_req allocation");
537		821
538	New (0, req->statdata, 1, Stat_t);	822	New (0, req->statdata, 1, Stat_t);
539
540	if (!req->statdata)	823	if (!req->statdata)
		824	{
		825	free_req (req);
541	croak ("out of memory during aio_req->statdata allocation");	826	croak ("out of memory during aio_req->statdata allocation");
		827	}
542		828
543	if (SvPOK (fh_or_path))	829	if (SvPOK (fh_or_path))
544	{	830	{
545	req->type = ix;	831	req->type = ix;
546	req->data = newSVsv (fh_or_path);	832	req->data = newSVsv (fh_or_path);
547	req->dataptr = SvPV_nolen (req->data);	833	req->dataptr = SvPVbyte_nolen (req->data);
548	}	834	}
549	else	835	else
550	{	836	{
551	req->type = REQ_FSTAT;	837	req->type = REQ_FSTAT;
		838	req->fh = newSVsv (fh_or_path);
552	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	839	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
553	}	840	}
554
555	req->callback = SvREFCNT_inc (callback);
556		841
557	send_req (req);	842	send_req (req);
558	}	843	}
559		844
560	void	845	void
561	aio_unlink(pathname,callback=&PL_sv_undef)	846	aio_unlink(pathname,callback=&PL_sv_undef)
562	SV * pathname	847	SV * pathname
563	SV * callback	848	SV * callback
		849	ALIAS:
		850	aio_unlink = REQ_UNLINK
		851	aio_rmdir = REQ_RMDIR
564	CODE:	852	CODE:
565	{	853	{
566	aio_req req;	854	dREQ;
567		855
568	Newz (0, req, 1, aio_cb);	856	req->type = ix;
		857	req->data = newSVsv (pathname);
		858	req->dataptr = SvPVbyte_nolen (req->data);
569		859
570	if (!req)	860	send_req (req);
571	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;
572		871
573	req->type = REQ_UNLINK;	872	req->type = REQ_SYMLINK;
		873	req->fh = newSVsv (oldpath);
		874	req->data2ptr = SvPVbyte_nolen (req->fh);
574	req->data = newSVsv (pathname);	875	req->data = newSVsv (newpath);
575	req->dataptr = SvPV_nolen (req->data);	876	req->dataptr = SvPVbyte_nolen (req->data);
576	req->callback = SvREFCNT_inc (callback);
577		877
578	send_req (req);	878	send_req (req);
579	}	879	}
580		880
581	void	881	void

Diff Legend

-–
+Removed lines
-+
+Added lines
-<
+Changed lines
->
+Changed lines

Comparing IO-AIO/AIO.xs (file contents): Revision 1.8 by root, Mon Jul 11 02:53:59 2005 UTC vs. Revision 1.36 by root, Tue Aug 23 01:18:04 2005 UTC

Diff Legend

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.8 by root, Mon Jul 11 02:53:59 2005 UTC vs.
Revision 1.36 by root, Tue Aug 23 01:18:04 2005 UTC