[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 1.35 by root, Tue Aug 23 01:16:50 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	/* 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	/*****************************************************************************/
279		548
280	static void *	549	static void *
281	aio_proc (void *thr_arg)	550	aio_proc (void *thr_arg)
282	{	551	{
283	aio_req req;	552	aio_req req;
…		…
309		578
310	type = req->type;	579	type = req->type;
311		580
312	switch (type)	581	switch (type)
313	{	582	{
314	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;
315	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;
316	#if SYS_readahead	585
317	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;
318	#else	587	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		588
322	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	589	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
323	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	590	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
324	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	591	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
325		592
326	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;
327	case REQ_CLOSE: req->result = close (req->fd); break;	594	case REQ_CLOSE: req->result = close (req->fd); break;
328	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;
329		598
		599	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
330	case REQ_FSYNC: req->result = fsync (req->fd); break;	600	case REQ_FSYNC: req->result = fsync (req->fd); break;
331	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
332		601
333	case REQ_QUIT:	602	case REQ_QUIT:
334	break;	603	break;
335		604
336	default:	605	default:
…		…
362	while (type != REQ_QUIT);	631	while (type != REQ_QUIT);
363		632
364	return 0;	633	return 0;
365	}	634	}
366		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
367	MODULE = IO::AIO PACKAGE = IO::AIO	648	MODULE = IO::AIO PACKAGE = IO::AIO
368		649
		650	PROTOTYPES: ENABLE
		651
369	BOOT:	652	BOOT:
370	{	653	{
371	if (pipe (respipe))	654	create_pipe ();
372	croak ("unable to initialize result pipe");	655	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	}	656	}
380		657
381	void	658	void
382	min_parallel(nthreads)	659	min_parallel(nthreads)
383	int nthreads	660	int nthreads
384	PROTOTYPE: $	661	PROTOTYPE: $
385	CODE:
386	while (nthreads > started)
387	start_thread ();
388		662
389	void	663	void
390	max_parallel(nthreads)	664	max_parallel(nthreads)
391	int nthreads	665	int nthreads
392	PROTOTYPE: $	666	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		667
409	int	668	int
410	max_outstanding(nreqs)	669	max_outstanding(nreqs)
411	int nreqs	670	int nreqs
412	PROTOTYPE: $	671	PROTOTYPE: $
413	CODE:	672	CODE:
414	RETVAL = max_outstanding;	673	RETVAL = max_outstanding;
415	max_outstanding = nreqs;	674	max_outstanding = nreqs;
416		675
417	void	676	void
418	aio_open(pathname,flags,mode,callback)	677	aio_open(pathname,flags,mode,callback=&PL_sv_undef)
419	SV * pathname	678	SV * pathname
420	int flags	679	int flags
421	int mode	680	int mode
422	SV * callback	681	SV * callback
423	PROTOTYPE: $$$$	682	PROTOTYPE: $$$;$
424	CODE:	683	CODE:
425	{	684	{
426	aio_req req;	685	dREQ;
427
428	Newz (0, req, 1, aio_cb);
429
430	if (!req)
431	croak ("out of memory during aio_req allocation");
432		686
433	req->type = REQ_OPEN;	687	req->type = REQ_OPEN;
434	req->data = newSVsv (pathname);	688	req->data = newSVsv (pathname);
435	req->dataptr = SvPV_nolen (req->data);	689	req->dataptr = SvPVbyte_nolen (req->data);
436	req->fd = flags;	690	req->fd = flags;
437	req->mode = mode;	691	req->mode = mode;
438	req->callback = SvREFCNT_inc (callback);
439		692
440	send_req (req);	693	send_req (req);
441	}	694	}
442		695
443	void	696	void
444	aio_close(fh,callback)	697	aio_close(fh,callback=&PL_sv_undef)
445	InputStream fh	698	SV * fh
446	SV * callback	699	SV * callback
447	PROTOTYPE: $$	700	PROTOTYPE: $;$
448	ALIAS:	701	ALIAS:
449	aio_close = REQ_CLOSE	702	aio_close = REQ_CLOSE
450	aio_fsync = REQ_FSYNC	703	aio_fsync = REQ_FSYNC
451	aio_fdatasync = REQ_FDATASYNC	704	aio_fdatasync = REQ_FDATASYNC
452	CODE:	705	CODE:
453	{	706	{
		707	dREQ;
		708
		709	req->type = ix;
		710	req->fh = newSVsv (fh);
		711	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
		712
		713	send_req (req);
		714	}
		715
		716	void
		717	aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
		718	SV * fh
		719	UV offset
		720	UV length
		721	SV * data
		722	UV dataoffset
		723	SV * callback
		724	ALIAS:
		725	aio_read = REQ_READ
		726	aio_write = REQ_WRITE
		727	PROTOTYPE: $$$$$;$
		728	CODE:
		729	{
454	aio_req req;	730	aio_req req;
		731	STRLEN svlen;
		732	char *svptr = SvPVbyte (data, svlen);
455		733
456	Newz (0, req, 1, aio_cb);	734	SvUPGRADE (data, SVt_PV);
		735	SvPOK_on (data);
457		736
458	if (!req)	737	if (dataoffset < 0)
459	croak ("out of memory during aio_req allocation");	738	dataoffset += svlen;
460		739
461	req->type = ix;	740	if (dataoffset < 0 \|\| dataoffset > svlen)
462	req->fd = PerlIO_fileno (fh);	741	croak ("data offset outside of string");
463	req->callback = SvREFCNT_inc (callback);
464		742
465	send_req (req);	743	if (ix == REQ_WRITE)
466	}	744	{
467		745	/* write: check length and adjust. */
468	void	746	if (length < 0 \|\| length + dataoffset > svlen)
469	aio_read(fh,offset,length,data,dataoffset,callback)	747	length = svlen - dataoffset;
470	InputStream fh	748	}
471	UV offset	749	else
472	IV length	750	{
473	SV * data	751	/* read: grow scalar as necessary */
474	IV dataoffset	752	svptr = SvGROW (data, length + dataoffset);
475	SV * callback	753	}
476	PROTOTYPE: $$$$$$
477	CODE:
478	read_write (aTHX_ 0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
479
480	void
481	aio_write(fh,offset,length,data,dataoffset,callback)
482	OutputStream fh
483	UV offset
484	IV length
485	SV * data
486	IV dataoffset
487	SV * callback
488	PROTOTYPE: $$$$$$
489	CODE:
490	read_write (aTHX_ 1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
491
492	void
493	aio_readahead(fh,offset,length,callback)
494	InputStream fh
495	UV offset
496	IV length
497	SV * callback
498	PROTOTYPE: $$$$
499	CODE:
500	{
501	aio_req req;
502		754
503	if (length < 0)	755	if (length < 0)
504	croak ("length must not be negative");	756	croak ("length must not be negative");
505		757
506	Newz (0, req, 1, aio_cb);	758	{
		759	dREQ;
507		760
508	if (!req)	761	req->type = ix;
509	croak ("out of memory during aio_req allocation");	762	req->fh = newSVsv (fh);
		763	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
		764	: IoOFP (sv_2io (fh)));
		765	req->offset = offset;
		766	req->length = length;
		767	req->data = SvREFCNT_inc (data);
		768	req->dataptr = (char *)svptr + dataoffset;
		769
		770	if (!SvREADONLY (data))
		771	{
		772	SvREADONLY_on (data);
		773	req->data2ptr = (void *)data;
		774	}
		775
		776	send_req (req);
		777	}
		778	}
		779
		780	void
		781	aio_sendfile(out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)
		782	SV * out_fh
		783	SV * in_fh
		784	UV in_offset
		785	UV length
		786	SV * callback
		787	PROTOTYPE: $$$$;$
		788	CODE:
		789	{
		790	dREQ;
		791
		792	req->type = REQ_SENDFILE;
		793	req->fh = newSVsv (out_fh);
		794	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
		795	req->fh2 = newSVsv (in_fh);
		796	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
		797	req->offset = in_offset;
		798	req->length = length;
		799
		800	send_req (req);
		801	}
		802
		803	void
		804	aio_readahead(fh,offset,length,callback=&PL_sv_undef)
		805	SV * fh
		806	UV offset
		807	IV length
		808	SV * callback
		809	PROTOTYPE: $$$;$
		810	CODE:
		811	{
		812	dREQ;
510		813
511	req->type = REQ_READAHEAD;	814	req->type = REQ_READAHEAD;
		815	req->fh = newSVsv (fh);
512	req->fd = PerlIO_fileno (fh);	816	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
513	req->offset = offset;	817	req->offset = offset;
514	req->length = length;	818	req->length = length;
515	req->callback = SvREFCNT_inc (callback);
516		819
517	send_req (req);	820	send_req (req);
518	}	821	}
519		822
520	void	823	void
521	aio_stat(fh_or_path,callback)	824	aio_stat(fh_or_path,callback=&PL_sv_undef)
522	SV * fh_or_path	825	SV * fh_or_path
523	SV * callback	826	SV * callback
524	PROTOTYPE: $$
525	ALIAS:	827	ALIAS:
		828	aio_stat = REQ_STAT
526	aio_lstat = 1	829	aio_lstat = REQ_LSTAT
527	CODE:	830	CODE:
528	{	831	{
529	aio_req req;	832	dREQ;
530
531	Newz (0, req, 1, aio_cb);
532
533	if (!req)
534	croak ("out of memory during aio_req allocation");
535		833
536	New (0, req->statdata, 1, Stat_t);	834	New (0, req->statdata, 1, Stat_t);
537
538	if (!req->statdata)	835	if (!req->statdata)
		836	{
		837	free_req (req);
539	croak ("out of memory during aio_req->statdata allocation");	838	croak ("out of memory during aio_req->statdata allocation");
		839	}
540		840
541	if (SvPOK (fh_or_path))	841	if (SvPOK (fh_or_path))
542	{	842	{
543	req->type = ix ? REQ_LSTAT : REQ_STAT;	843	req->type = ix;
544	req->data = newSVsv (fh_or_path);	844	req->data = newSVsv (fh_or_path);
545	req->dataptr = SvPV_nolen (req->data);	845	req->dataptr = SvPVbyte_nolen (req->data);
546	}	846	}
547	else	847	else
548	{	848	{
549	req->type = REQ_FSTAT;	849	req->type = REQ_FSTAT;
		850	req->fh = newSVsv (fh_or_path);
550	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	851	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
551	}	852	}
552		853
553	req->callback = SvREFCNT_inc (callback);
554
555	send_req (req);	854	send_req (req);
556	}	855	}
557		856
558	void	857	void
559	aio_unlink(pathname,callback)	858	aio_unlink(pathname,callback=&PL_sv_undef)
560	SV * pathname	859	SV * pathname
561	SV * callback	860	SV * callback
562	PROTOTYPE: $$	861	ALIAS:
		862	aio_unlink = REQ_UNLINK
		863	aio_rmdir = REQ_RMDIR
563	CODE:	864	CODE:
564	{	865	{
565	aio_req req;	866	dREQ;
566		867
567	Newz (0, req, 1, aio_cb);	868	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);	869	req->data = newSVsv (pathname);
574	req->dataptr = SvPV_nolen (req->data);	870	req->dataptr = SvPVbyte_nolen (req->data);
575	req->callback = SvREFCNT_inc (callback);
576		871
577	send_req (req);	872	send_req (req);
578	}	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;
		883
		884	req->type = REQ_SYMLINK;
		885	req->fh = newSVsv (oldpath);
		886	req->data2ptr = SvPVbyte_nolen (req->fh);
		887	req->data = newSVsv (newpath);
		888	req->dataptr = SvPVbyte_nolen (req->data);
		889
		890	send_req (req);
		891	}
		892
		893	void
		894	flush()
		895	PROTOTYPE:
		896	CODE:
		897	while (nreqs)
		898	{
		899	poll_wait ();
		900	poll_cb ();
		901	}
		902
		903	void
		904	poll()
		905	PROTOTYPE:
		906	CODE:
		907	if (nreqs)
		908	{
		909	poll_wait ();
		910	poll_cb ();
		911	}
579		912
580	int	913	int
581	poll_fileno()	914	poll_fileno()
582	PROTOTYPE:	915	PROTOTYPE:
583	CODE:	916	CODE:
…		…
587		920
588	int	921	int
589	poll_cb(...)	922	poll_cb(...)
590	PROTOTYPE:	923	PROTOTYPE:
591	CODE:	924	CODE:
592	RETVAL = poll_cb (aTHX);	925	RETVAL = poll_cb ();
593	OUTPUT:	926	OUTPUT:
594	RETVAL	927	RETVAL
595		928
596	void	929	void
597	poll_wait()	930	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 1.35 by root, Tue Aug 23 01:16:50 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 1.35 by root, Tue Aug 23 01:16:50 2005 UTC