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

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.4 by root, Sun Jul 10 20:57:00 2005 UTC vs.
Revision 1.36 by root, Tue Aug 23 01:18:04 2005 UTC

…		…
1	#define PERL_NO_GET_CONTEXT	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"
6		7
		8	#include "autoconf/config.h"
		9
		10	#include <pthread.h>
		11
7	#include <sys/types.h>	12	#include <sys/types.h>
8	#include <sys/stat.h>	13	#include <sys/stat.h>
		14
9	#include <unistd.h>	15	#include <unistd.h>
10	#include <fcntl.h>	16	#include <fcntl.h>
11	#include <signal.h>	17	#include <signal.h>
12	#include <sched.h>	18	#include <sched.h>
13	#include <endian.h>
14		19
15	#include <pthread.h>	20	#if HAVE_SENDFILE
		21	# if __linux
		22	# include <sys/sendfile.h>
		23	# elif __freebsd
16	#include <sys/syscall.h>	24	# include <sys/socket.h>
17		25	# include <sys/uio.h>
18	typedef void InputStream; / hack, but 5.6.1 is simply toooo old ;) */	26	# elif __hpux
19	typedef void OutputStream; / hack, but 5.6.1 is simply toooo old ;) */	27	# include <sys/socket.h>
20	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
21		34
22	#if __ia64	35	#if __ia64
23	# define STACKSIZE 65536	36	# define STACKSIZE 65536
24	#else	37	#else
25	# define STACKSIZE 4096	38	# define STACKSIZE 4096
27		40
28	enum {	41	enum {
29	REQ_QUIT,	42	REQ_QUIT,
30	REQ_OPEN, REQ_CLOSE,	43	REQ_OPEN, REQ_CLOSE,
31	REQ_READ, REQ_WRITE, REQ_READAHEAD,	44	REQ_READ, REQ_WRITE, REQ_READAHEAD,
		45	REQ_SENDFILE,
32	REQ_STAT, REQ_LSTAT, REQ_FSTAT, REQ_UNLINK,	46	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
33	REQ_FSYNC, REQ_FDATASYNC,	47	REQ_FSYNC, REQ_FDATASYNC,
		48	REQ_UNLINK, REQ_RMDIR,
		49	REQ_SYMLINK,
34	};	50	};
35		51
36	typedef struct aio_cb {	52	typedef struct aio_cb {
37	struct aio_cb *volatile next;	53	struct aio_cb *volatile next;
38		54
39	int type;	55	int type;
40		56
41	int fd;	57	int fd, fd2;
42	off_t offset;	58	off_t offset;
43	size_t length;	59	size_t length;
44	ssize_t result;	60	ssize_t result;
45	mode_t mode; /* open */	61	mode_t mode; /* open */
46	int errorno;	62	int errorno;
47	SV data, callback;	63	SV data, callback;
48	void *dataptr;	64	SV fh, fh2;
		65	void dataptr, data2ptr;
49	STRLEN dataoffset;	66	STRLEN dataoffset;
50		67
51	Stat_t *statdata;	68	Stat_t *statdata;
52	} aio_cb;	69	} aio_cb;
53		70
54	typedef aio_cb *aio_req;	71	typedef aio_cb *aio_req;
55		72
56	static int started;	73	static int started, wanted;
57	static int nreqs;	74	static volatile int nreqs;
58	static int max_outstanding = 1<<30;	75	static int max_outstanding = 1<<30;
59	static int respipe [2];	76	static int respipe [2];
60		77
61	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	78	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;
62	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;	79	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
63	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	80	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
64		81
65	static volatile aio_req reqs, reqe; /* queue start, queue end */	82	static volatile aio_req reqs, reqe; /* queue start, queue end */
66	static volatile aio_req ress, rese; /* queue start, queue end */	83	static volatile aio_req ress, rese; /* queue start, queue end */
67		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
68	static void	105	static void
69	poll_wait ()	106	poll_wait ()
70	{	107	{
71	if (!nreqs)	108	if (nreqs && !ress)
72	return;	109	{
73
74	fd_set rfd;	110	fd_set rfd;
75	FD_ZERO(&rfd);	111	FD_ZERO(&rfd);
76	FD_SET(respipe [0], &rfd);	112	FD_SET(respipe [0], &rfd);
77		113
78	select (respipe [0] + 1, &rfd, 0, 0, 0);	114	select (respipe [0] + 1, &rfd, 0, 0, 0);
		115	}
79	}	116	}
80		117
81	static int	118	static int
82	poll_cb (pTHX)	119	poll_cb ()
83	{	120	{
84	dSP;	121	dSP;
85	int count = 0;	122	int count = 0;
		123	int do_croak = 0;
86	aio_req req;	124	aio_req req;
87
88	{
89	/* read and signals sent by the worker threads */
90	char buf [32];
91	while (read (respipe [0], buf, 32) > 0)
92	;
93	}
94		125
95	for (;;)	126	for (;;)
96	{	127	{
97	pthread_mutex_lock (&reslock);	128	pthread_mutex_lock (&reslock);
98
99	req = ress;	129	req = ress;
100		130
101	if (ress)	131	if (req)
102	{	132	{
103	ress = ress->next;	133	ress = req->next;
		134
104	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	}
105	}	144	}
106		145
107	pthread_mutex_unlock (&reslock);	146	pthread_mutex_unlock (&reslock);
108		147
109	if (!req)	148	if (!req)
…		…
117	{	156	{
118	int errorno = errno;	157	int errorno = errno;
119	errno = req->errorno;	158	errno = req->errorno;
120		159
121	if (req->type == REQ_READ)	160	if (req->type == REQ_READ)
122	SvCUR_set (req->data, req->dataoffset	161	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
123	+ req->result > 0 ? req->result : 0);
124		162
		163	if (req->data2ptr && (req->type == REQ_READ \|\| req->type == REQ_WRITE))
		164	SvREADONLY_off (req->data);
		165
125	if (req->data)	166	if (req->statdata)
126	SvREFCNT_dec (req->data);
127
128	if (req->type == REQ_STAT \|\| req->type == REQ_LSTAT \|\| req->type == REQ_FSTAT)
129	{	167	{
130	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	168	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
131	PL_laststatval = req->result;	169	PL_laststatval = req->result;
132	PL_statcache = *(req->statdata);	170	PL_statcache = *(req->statdata);
133
134	Safefree (req->statdata);
135	}	171	}
136		172
		173	ENTER;
137	PUSHMARK (SP);	174	PUSHMARK (SP);
138	XPUSHs (sv_2mortal (newSViv (req->result)));	175	XPUSHs (sv_2mortal (newSViv (req->result)));
139		176
140	if (req->type == REQ_OPEN)	177	if (req->type == REQ_OPEN)
141	{	178	{
…		…
144		181
145	PUTBACK;	182	PUTBACK;
146	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);	183	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);
147	SPAGAIN;	184	SPAGAIN;
148		185
149	fh = POPs;	186	fh = SvREFCNT_inc (POPs);
150		187
151	PUSHMARK (SP);	188	PUSHMARK (SP);
152	XPUSHs (fh);	189	XPUSHs (sv_2mortal (fh));
153	}	190	}
154		191
		192	if (SvOK (req->callback))
		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	}
159	if (req->callback)	204
160	SvREFCNT_dec (req->callback);	205	LEAVE;
161		206
162	errno = errorno;	207	errno = errorno;
163	count++;	208	count++;
164	}	209	}
165		210
166	Safefree (req);	211	free_req (req);
167	}	212	}
168		213
169	return count;	214	return count;
170	}	215	}
171		216
…		…
192	}	237	}
193		238
194	static void	239	static void
195	send_req (aio_req req)	240	send_req (aio_req req)
196	{	241	{
		242	while (started < wanted && nreqs >= started)
		243	start_thread ();
		244
197	nreqs++;	245	nreqs++;
198		246
199	pthread_mutex_lock (&reqlock);	247	pthread_mutex_lock (&reqlock);
200		248
201	req->next = 0;	249	req->next = 0;
…		…
209	reqe = reqs = req;	257	reqe = reqs = req;
210		258
211	pthread_cond_signal (&reqwait);	259	pthread_cond_signal (&reqwait);
212	pthread_mutex_unlock (&reqlock);	260	pthread_mutex_unlock (&reqlock);
213		261
214	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)
215	{	304	{
216	poll_wait ();	305	poll_wait ();
217	poll_cb ();	306	poll_cb ();
218	}	307	}
219	}	308	}
220		309
221	static void	310	static void create_pipe ()
222	end_thread (void)
223	{	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	{
224	aio_req req;	336	aio_req prv;
225	New (0, req, 1, aio_cb);
226	req->type = REQ_QUIT;
227		337
228	send_req (req);	338	started = 0;
229	}
230		339
231	static void	340	while (reqs)
232	read_write (pTHX_
233	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
		638	PROTOTYPES: ENABLE
		639
369	BOOT:	640	BOOT:
370	{	641	{
371	if (pipe (respipe))	642	create_pipe ();
372	croak ("unable to initialize result pipe");	643	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
373
374	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
375	croak ("cannot set result pipe to nonblocking mode");
376
377	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
378	croak ("cannot set result pipe to nonblocking mode");
379	}	644	}
380		645
381	void	646	void
382	min_parallel(nthreads)	647	min_parallel(nthreads)
383	int nthreads	648	int nthreads
384	PROTOTYPE: $	649	PROTOTYPE: $
385	CODE:
386	while (nthreads > started)
387	start_thread ();
388		650
389	void	651	void
390	max_parallel(nthreads)	652	max_parallel(nthreads)
391	int nthreads	653	int nthreads
392	PROTOTYPE: $	654	PROTOTYPE: $
393	CODE:
394	{
395	int cur = started;
396	while (cur > nthreads)
397	{
398	end_thread ();
399	cur--;
400	}
401
402	while (started > nthreads)
403	{
404	poll_wait ();
405	poll_cb (aTHX);
406	}
407	}
408		655
409	int	656	int
410	max_outstanding(nreqs)	657	max_outstanding(nreqs)
411	int nreqs	658	int nreqs
412	PROTOTYPE: $	659	PROTOTYPE: $
413	CODE:	660	CODE:
414	RETVAL = max_outstanding;	661	RETVAL = max_outstanding;
415	max_outstanding = nreqs;	662	max_outstanding = nreqs;
416		663
417	void	664	void
418	aio_open(pathname,flags,mode,callback)	665	aio_open(pathname,flags,mode,callback=&PL_sv_undef)
419	SV * pathname	666	SV * pathname
420	int flags	667	int flags
421	int mode	668	int mode
422	SV * callback	669	SV * callback
423	PROTOTYPE: $$$$	670	PROTOTYPE: $$$;$
424	CODE:	671	CODE:
425	{	672	{
426	aio_req req;	673	dREQ;
427
428	Newz (0, req, 1, aio_cb);
429
430	if (!req)
431	croak ("out of memory during aio_req allocation");
432		674
433	req->type = REQ_OPEN;	675	req->type = REQ_OPEN;
434	req->data = newSVsv (pathname);	676	req->data = newSVsv (pathname);
435	req->dataptr = SvPV_nolen (req->data);	677	req->dataptr = SvPVbyte_nolen (req->data);
436	req->fd = flags;	678	req->fd = flags;
437	req->mode = mode;	679	req->mode = mode;
438	req->callback = SvREFCNT_inc (callback);
439		680
440	send_req (req);	681	send_req (req);
441	}	682	}
442		683
443	void	684	void
444	aio_close(fh,callback)	685	aio_close(fh,callback=&PL_sv_undef)
445	InputStream fh	686	SV * fh
446	SV * callback	687	SV * callback
447	PROTOTYPE: $$	688	PROTOTYPE: $;$
448	ALIAS:	689	ALIAS:
449	aio_close = REQ_CLOSE	690	aio_close = REQ_CLOSE
450	aio_fsync = REQ_FSYNC	691	aio_fsync = REQ_FSYNC
451	aio_fdatasync = REQ_FDATASYNC	692	aio_fdatasync = REQ_FDATASYNC
452	CODE:	693	CODE:
453	{	694	{
		695	dREQ;
		696
		697	req->type = ix;
		698	req->fh = newSVsv (fh);
		699	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
		700
		701	send_req (req);
		702	}
		703
		704	void
		705	aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
		706	SV * fh
		707	UV offset
		708	UV length
		709	SV * data
		710	UV dataoffset
		711	SV * callback
		712	ALIAS:
		713	aio_read = REQ_READ
		714	aio_write = REQ_WRITE
		715	PROTOTYPE: $$$$$;$
		716	CODE:
		717	{
454	aio_req req;	718	aio_req req;
		719	STRLEN svlen;
		720	char *svptr = SvPVbyte (data, svlen);
455		721
456	Newz (0, req, 1, aio_cb);	722	SvUPGRADE (data, SVt_PV);
		723	SvPOK_on (data);
457		724
458	if (!req)	725	if (dataoffset < 0)
459	croak ("out of memory during aio_req allocation");	726	dataoffset += svlen;
460		727
461	req->type = ix;	728	if (dataoffset < 0 \|\| dataoffset > svlen)
462	req->fd = PerlIO_fileno (fh);	729	croak ("data offset outside of string");
463	req->callback = SvREFCNT_inc (callback);
464		730
465	send_req (req);	731	if (ix == REQ_WRITE)
466	}	732	{
467		733	/* write: check length and adjust. */
468	void	734	if (length < 0 \|\| length + dataoffset > svlen)
469	aio_read(fh,offset,length,data,dataoffset,callback)	735	length = svlen - dataoffset;
470	InputStream fh	736	}
471	UV offset	737	else
472	IV length	738	{
473	SV * data	739	/* read: grow scalar as necessary */
474	IV dataoffset	740	svptr = SvGROW (data, length + dataoffset);
475	SV * callback	741	}
476	PROTOTYPE: $$$$$$
477	CODE:
478	read_write (aTHX_ 0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
479
480	void
481	aio_write(fh,offset,length,data,dataoffset,callback)
482	OutputStream fh
483	UV offset
484	IV length
485	SV * data
486	IV dataoffset
487	SV * callback
488	PROTOTYPE: $$$$$$
489	CODE:
490	read_write (aTHX_ 1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
491
492	void
493	aio_readahead(fh,offset,length,callback)
494	InputStream fh
495	UV offset
496	IV length
497	SV * callback
498	PROTOTYPE: $$$$
499	CODE:
500	{
501	aio_req req;
502		742
503	if (length < 0)	743	if (length < 0)
504	croak ("length must not be negative");	744	croak ("length must not be negative");
505		745
506	Newz (0, req, 1, aio_cb);	746	{
		747	dREQ;
507		748
508	if (!req)	749	req->type = ix;
509	croak ("out of memory during aio_req allocation");	750	req->fh = newSVsv (fh);
		751	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
		752	: IoOFP (sv_2io (fh)));
		753	req->offset = offset;
		754	req->length = length;
		755	req->data = SvREFCNT_inc (data);
		756	req->dataptr = (char *)svptr + dataoffset;
		757
		758	if (!SvREADONLY (data))
		759	{
		760	SvREADONLY_on (data);
		761	req->data2ptr = (void *)data;
		762	}
		763
		764	send_req (req);
		765	}
		766	}
		767
		768	void
		769	aio_sendfile(out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)
		770	SV * out_fh
		771	SV * in_fh
		772	UV in_offset
		773	UV length
		774	SV * callback
		775	PROTOTYPE: $$$$;$
		776	CODE:
		777	{
		778	dREQ;
		779
		780	req->type = REQ_SENDFILE;
		781	req->fh = newSVsv (out_fh);
		782	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
		783	req->fh2 = newSVsv (in_fh);
		784	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
		785	req->offset = in_offset;
		786	req->length = length;
		787
		788	send_req (req);
		789	}
		790
		791	void
		792	aio_readahead(fh,offset,length,callback=&PL_sv_undef)
		793	SV * fh
		794	UV offset
		795	IV length
		796	SV * callback
		797	PROTOTYPE: $$$;$
		798	CODE:
		799	{
		800	dREQ;
510		801
511	req->type = REQ_READAHEAD;	802	req->type = REQ_READAHEAD;
		803	req->fh = newSVsv (fh);
512	req->fd = PerlIO_fileno (fh);	804	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
513	req->offset = offset;	805	req->offset = offset;
514	req->length = length;	806	req->length = length;
515	req->callback = SvREFCNT_inc (callback);
516		807
517	send_req (req);	808	send_req (req);
518	}	809	}
519		810
520	void	811	void
521	aio_stat(fh_or_path,callback)	812	aio_stat(fh_or_path,callback=&PL_sv_undef)
522	SV * fh_or_path	813	SV * fh_or_path
523	SV * callback	814	SV * callback
524	PROTOTYPE: $$
525	ALIAS:	815	ALIAS:
		816	aio_stat = REQ_STAT
526	aio_lstat = 1	817	aio_lstat = REQ_LSTAT
527	CODE:	818	CODE:
528	{	819	{
529	aio_req req;	820	dREQ;
530
531	Newz (0, req, 1, aio_cb);
532
533	if (!req)
534	croak ("out of memory during aio_req allocation");
535		821
536	New (0, req->statdata, 1, Stat_t);	822	New (0, req->statdata, 1, Stat_t);
537
538	if (!req->statdata)	823	if (!req->statdata)
		824	{
		825	free_req (req);
539	croak ("out of memory during aio_req->statdata allocation");	826	croak ("out of memory during aio_req->statdata allocation");
		827	}
540		828
541	if (SvPOK (fh_or_path))	829	if (SvPOK (fh_or_path))
542	{	830	{
543	req->type = ix ? REQ_LSTAT : REQ_STAT;	831	req->type = ix;
544	req->data = newSVsv (fh_or_path);	832	req->data = newSVsv (fh_or_path);
545	req->dataptr = SvPV_nolen (req->data);	833	req->dataptr = SvPVbyte_nolen (req->data);
546	}	834	}
547	else	835	else
548	{	836	{
549	req->type = REQ_FSTAT;	837	req->type = REQ_FSTAT;
		838	req->fh = newSVsv (fh_or_path);
550	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	839	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
551	}	840	}
552		841
553	req->callback = SvREFCNT_inc (callback);
554
555	send_req (req);	842	send_req (req);
556	}	843	}
557		844
558	void	845	void
559	aio_unlink(pathname,callback)	846	aio_unlink(pathname,callback=&PL_sv_undef)
560	SV * pathname	847	SV * pathname
561	SV * callback	848	SV * callback
562	PROTOTYPE: $$	849	ALIAS:
		850	aio_unlink = REQ_UNLINK
		851	aio_rmdir = REQ_RMDIR
563	CODE:	852	CODE:
564	{	853	{
565	aio_req req;	854	dREQ;
566		855
567	Newz (0, req, 1, aio_cb);	856	req->type = ix;
568
569	if (!req)
570	croak ("out of memory during aio_req allocation");
571
572	req->type = REQ_UNLINK;
573	req->data = newSVsv (pathname);	857	req->data = newSVsv (pathname);
574	req->dataptr = SvPV_nolen (req->data);	858	req->dataptr = SvPVbyte_nolen (req->data);
575	req->callback = SvREFCNT_inc (callback);
576		859
577	send_req (req);	860	send_req (req);
578	}	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;
		871
		872	req->type = REQ_SYMLINK;
		873	req->fh = newSVsv (oldpath);
		874	req->data2ptr = SvPVbyte_nolen (req->fh);
		875	req->data = newSVsv (newpath);
		876	req->dataptr = SvPVbyte_nolen (req->data);
		877
		878	send_req (req);
		879	}
		880
		881	void
		882	flush()
		883	PROTOTYPE:
		884	CODE:
		885	while (nreqs)
		886	{
		887	poll_wait ();
		888	poll_cb ();
		889	}
		890
		891	void
		892	poll()
		893	PROTOTYPE:
		894	CODE:
		895	if (nreqs)
		896	{
		897	poll_wait ();
		898	poll_cb ();
		899	}
579		900
580	int	901	int
581	poll_fileno()	902	poll_fileno()
582	PROTOTYPE:	903	PROTOTYPE:
583	CODE:	904	CODE:
…		…
587		908
588	int	909	int
589	poll_cb(...)	910	poll_cb(...)
590	PROTOTYPE:	911	PROTOTYPE:
591	CODE:	912	CODE:
592	RETVAL = poll_cb (aTHX);	913	RETVAL = poll_cb ();
593	OUTPUT:	914	OUTPUT:
594	RETVAL	915	RETVAL
595		916
596	void	917	void
597	poll_wait()	918	poll_wait()

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Comparing IO-AIO/AIO.xs (file contents): Revision 1.4 by root, Sun Jul 10 20:57:00 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 1.4 by root, Sun Jul 10 20:57:00 2005 UTC vs.
Revision 1.36 by root, Tue Aug 23 01:18:04 2005 UTC