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

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.11 by root, Wed Jul 20 21:55:27 2005 UTC vs.
Revision 1.35 by root, Tue Aug 23 01:16:50 2005 UTC

…		…
1	#define _XOPEN_SOURCE 500	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"
		7
		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 volatile 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 */
		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	}
69		104
70	static void	105	static void
71	poll_wait ()	106	poll_wait ()
72	{	107	{
73	if (nreqs && !ress)	108	if (nreqs && !ress)
…		…
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, prv;	124	aio_req req;
89		125
90	static int rl;//D	126	for (;;)
91	//printf ("%d ENTER\n", ++rl);//D
92
93	pthread_mutex_lock (&reslock);
94
95	{
96	/* read any signals sent by the worker threads */
97	char buf [32];
98	while (read (respipe [0], buf, 32) > 0)
99	;
100	}
101
102	req = ress;
103	ress = rese = 0;
104
105	pthread_mutex_unlock (&reslock);
106
107	while (req)
108	{	127	{
		128	pthread_mutex_lock (&reslock);
		129	req = ress;
		130
		131	if (req)
		132	{
		133	ress = req->next;
		134
		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	}
		144	}
		145
		146	pthread_mutex_unlock (&reslock);
		147
		148	if (!req)
		149	break;
		150
109	nreqs--;	151	nreqs--;
110	//printf ("%d count %d %p->%p\n", rl, count, req, req->next);//D
111		152
112	if (req->type == REQ_QUIT)	153	if (req->type == REQ_QUIT)
113	started--;	154	started--;
114	else	155	else
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	prv = req;	211	free_req (req);
168	req = req->next;
169	Safefree (prv);
170
171	/* TODO: croak on errors? */
172	}	212	}
173		213
174	//printf ("%d LEAVE %p %p\n", rl--, ress, rese);//D
175	return count;	214	return count;
176	}	215	}
177		216
178	static void aio_proc(void arg);	217	static void aio_proc(void arg);
179		218
…		…
198	}	237	}
199		238
200	static void	239	static void
201	send_req (aio_req req)	240	send_req (aio_req req)
202	{	241	{
		242	while (started < wanted && nreqs >= started)
		243	start_thread ();
		244
203	nreqs++;	245	nreqs++;
204		246
205	pthread_mutex_lock (&reqlock);	247	pthread_mutex_lock (&reqlock);
206		248
207	req->next = 0;	249	req->next = 0;
…		…
215	reqe = reqs = req;	257	reqe = reqs = req;
216		258
217	pthread_cond_signal (&reqwait);	259	pthread_cond_signal (&reqwait);
218	pthread_mutex_unlock (&reqlock);	260	pthread_mutex_unlock (&reqlock);
219		261
220	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)
221	{	304	{
222	poll_wait ();	305	poll_wait ();
223	poll_cb ();	306	poll_cb ();
224	}	307	}
225	}	308	}
226		309
227	static void	310	static void create_pipe ()
228	end_thread (void)
229	{	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	{
230	aio_req req;	336	aio_req prv;
231	New (0, req, 1, aio_cb);
232	req->type = REQ_QUIT;
233		337
234	send_req (req);	338	started = 0;
235	}
236		339
237	static void	340	while (reqs)
238	read_write (int dowrite, int fd, off_t offset, size_t length,
239	SV data, STRLEN dataoffset, SV callback)
240	{
241	aio_req req;
242	STRLEN svlen;
243	char *svptr = SvPV (data, svlen);
244
245	SvUPGRADE (data, SVt_PV);
246	SvPOK_on (data);
247
248	if (dataoffset < 0)
249	dataoffset += svlen;
250
251	if (dataoffset < 0 \|\| dataoffset > svlen)
252	croak ("data offset outside of string");
253
254	if (dowrite)
255	{	341	{
256	/* write: check length and adjust. */	342	prv = reqs;
257	if (length < 0 \|\| length + dataoffset > svlen)	343	reqs = prv->next;
258	length = svlen - dataoffset;	344	free_req (prv);
259	}	345	}
260	else	346
		347	reqs = reqe = 0;
		348
		349	while (ress)
261	{	350	{
262	/* read: grow scalar as necessary */	351	prv = ress;
263	svptr = SvGROW (data, length + dataoffset);	352	ress = prv->next;
		353	free_req (prv);
264	}	354	}
		355
		356	ress = rese = 0;
265		357
266	if (length < 0)	358	close (respipe [0]);
267	croak ("length must not be negative");	359	close (respipe [1]);
		360	create_pipe ();
268		361
269	Newz (0, req, 1, aio_cb);	362	atfork_parent ();
270
271	if (!req)
272	croak ("out of memory during aio_req allocation");
273
274	req->type = dowrite ? REQ_WRITE : REQ_READ;
275	req->fd = fd;
276	req->offset = offset;
277	req->length = length;
278	req->data = SvREFCNT_inc (data);
279	req->dataptr = (char *)svptr + dataoffset;
280	req->callback = SvREFCNT_inc (callback);
281
282	send_req (req);
283	}	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	/*****************************************************************************/
284		548
285	static void *	549	static void *
286	aio_proc (void *thr_arg)	550	aio_proc (void *thr_arg)
287	{	551	{
288	aio_req req;	552	aio_req req;
…		…
316		580
317	switch (type)	581	switch (type)
318	{	582	{
319	case REQ_READ: req->result = pread (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;
320	case REQ_WRITE: req->result = pwrite (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;
321	#if SYS_readahead	585
322	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;
323	#else	587	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
324	case REQ_READAHEAD: req->result = -1; errno = ENOSYS; break;
325	#endif
326		588
327	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	589	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
328	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	590	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
329	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	591	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
330		592
331	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;
332	case REQ_CLOSE: req->result = close (req->fd); break;	594	case REQ_CLOSE: req->result = close (req->fd); break;
333	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;
334		598
		599	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
335	case REQ_FSYNC: req->result = fsync (req->fd); break;	600	case REQ_FSYNC: req->result = fsync (req->fd); break;
336	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
337		601
338	case REQ_QUIT:	602	case REQ_QUIT:
339	break;	603	break;
340		604
341	default:	605	default:
…		…
367	while (type != REQ_QUIT);	631	while (type != REQ_QUIT);
368		632
369	return 0;	633	return 0;
370	}	634	}
371		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
372	MODULE = IO::AIO PACKAGE = IO::AIO	648	MODULE = IO::AIO PACKAGE = IO::AIO
373		649
374	PROTOTYPES: ENABLE	650	PROTOTYPES: ENABLE
375		651
376	BOOT:	652	BOOT:
377	{	653	{
378	if (pipe (respipe))	654	create_pipe ();
379	croak ("unable to initialize result pipe");	655	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
380
381	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
382	croak ("cannot set result pipe to nonblocking mode");
383
384	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
385	croak ("cannot set result pipe to nonblocking mode");
386	}	656	}
387		657
388	void	658	void
389	min_parallel(nthreads)	659	min_parallel(nthreads)
390	int nthreads	660	int nthreads
391	PROTOTYPE: $	661	PROTOTYPE: $
392	CODE:
393	while (nthreads > started)
394	start_thread ();
395		662
396	void	663	void
397	max_parallel(nthreads)	664	max_parallel(nthreads)
398	int nthreads	665	int nthreads
399	PROTOTYPE: $	666	PROTOTYPE: $
400	CODE:
401	{
402	int cur = started;
403	while (cur > nthreads)
404	{
405	end_thread ();
406	cur--;
407	}
408
409	while (started > nthreads)
410	{
411	poll_wait ();
412	poll_cb ();
413	}
414	}
415		667
416	int	668	int
417	max_outstanding(nreqs)	669	max_outstanding(nreqs)
418	int nreqs	670	int nreqs
419	PROTOTYPE: $	671	PROTOTYPE: $
…		…
428	int mode	680	int mode
429	SV * callback	681	SV * callback
430	PROTOTYPE: $$$;$	682	PROTOTYPE: $$$;$
431	CODE:	683	CODE:
432	{	684	{
433	aio_req req;	685	dREQ;
434
435	Newz (0, req, 1, aio_cb);
436
437	if (!req)
438	croak ("out of memory during aio_req allocation");
439		686
440	req->type = REQ_OPEN;	687	req->type = REQ_OPEN;
441	req->data = newSVsv (pathname);	688	req->data = newSVsv (pathname);
442	req->dataptr = SvPV_nolen (req->data);	689	req->dataptr = SvPVbyte_nolen (req->data);
443	req->fd = flags;	690	req->fd = flags;
444	req->mode = mode;	691	req->mode = mode;
445	req->callback = SvREFCNT_inc (callback);
446		692
447	send_req (req);	693	send_req (req);
448	}	694	}
449		695
450	void	696	void
451	aio_close(fh,callback=&PL_sv_undef)	697	aio_close(fh,callback=&PL_sv_undef)
452	InputStream fh	698	SV * fh
453	SV * callback	699	SV * callback
454	PROTOTYPE: $;$	700	PROTOTYPE: $;$
455	ALIAS:	701	ALIAS:
456	aio_close = REQ_CLOSE	702	aio_close = REQ_CLOSE
457	aio_fsync = REQ_FSYNC	703	aio_fsync = REQ_FSYNC
458	aio_fdatasync = REQ_FDATASYNC	704	aio_fdatasync = REQ_FDATASYNC
459	CODE:	705	CODE:
460	{	706	{
461	aio_req req;	707	dREQ;
462
463	Newz (0, req, 1, aio_cb);
464
465	if (!req)
466	croak ("out of memory during aio_req allocation");
467		708
468	req->type = ix;	709	req->type = ix;
		710	req->fh = newSVsv (fh);
469	req->fd = PerlIO_fileno (fh);	711	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
470	req->callback = SvREFCNT_inc (callback);
471		712
472	send_req (req);	713	send_req (req);
473	}	714	}
474		715
475	void	716	void
476	aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	717	aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
477	InputStream fh	718	SV * fh
478	UV offset	719	UV offset
479	IV length	720	UV length
480	SV * data	721	SV * data
481	IV dataoffset	722	UV dataoffset
482	SV * callback	723	SV * callback
		724	ALIAS:
		725	aio_read = REQ_READ
		726	aio_write = REQ_WRITE
483	PROTOTYPE: $$$$$;$	727	PROTOTYPE: $$$$$;$
484	CODE:	728	CODE:
485	read_write (0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);	729	{
		730	aio_req req;
		731	STRLEN svlen;
		732	char *svptr = SvPVbyte (data, svlen);
486		733
		734	SvUPGRADE (data, SVt_PV);
		735	SvPOK_on (data);
		736
		737	if (dataoffset < 0)
		738	dataoffset += svlen;
		739
		740	if (dataoffset < 0 \|\| dataoffset > svlen)
		741	croak ("data offset outside of string");
		742
		743	if (ix == REQ_WRITE)
		744	{
		745	/* write: check length and adjust. */
		746	if (length < 0 \|\| length + dataoffset > svlen)
		747	length = svlen - dataoffset;
		748	}
		749	else
		750	{
		751	/* read: grow scalar as necessary */
		752	svptr = SvGROW (data, length + dataoffset);
		753	}
		754
		755	if (length < 0)
		756	croak ("length must not be negative");
		757
		758	{
		759	dREQ;
		760
		761	req->type = ix;
		762	req->fh = newSVsv (fh);
		763	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
		764	: IoOFP (sv_2io (fh)));
		765	req->offset = offset;
		766	req->length = length;
		767	req->data = SvREFCNT_inc (data);
		768	req->dataptr = (char *)svptr + dataoffset;
		769
		770	if (!SvREADONLY (data))
		771	{
		772	SvREADONLY_on (data);
		773	req->data2ptr = (void *)data;
		774	}
		775
		776	send_req (req);
		777	}
		778	}
		779
487	void	780	void
488	aio_write(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	781	aio_sendfile(out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)
489	OutputStream fh	782	SV * out_fh
		783	SV * in_fh
490	UV offset	784	UV in_offset
491	IV length	785	UV length
492	SV * data
493	IV dataoffset
494	SV * callback	786	SV * callback
495	PROTOTYPE: $$$$$;$	787	PROTOTYPE: $$$$;$
496	CODE:	788	CODE:
497	read_write (1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);	789	{
		790	dREQ;
		791
		792	req->type = REQ_SENDFILE;
		793	req->fh = newSVsv (out_fh);
		794	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
		795	req->fh2 = newSVsv (in_fh);
		796	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
		797	req->offset = in_offset;
		798	req->length = length;
		799
		800	send_req (req);
		801	}
498		802
499	void	803	void
500	aio_readahead(fh,offset,length,callback=&PL_sv_undef)	804	aio_readahead(fh,offset,length,callback=&PL_sv_undef)
501	InputStream fh	805	SV * fh
502	UV offset	806	UV offset
503	IV length	807	IV length
504	SV * callback	808	SV * callback
505	PROTOTYPE: $$$;$	809	PROTOTYPE: $$$;$
506	CODE:	810	CODE:
507	{	811	{
508	aio_req req;	812	dREQ;
509
510	if (length < 0)
511	croak ("length must not be negative");
512
513	Newz (0, req, 1, aio_cb);
514
515	if (!req)
516	croak ("out of memory during aio_req allocation");
517		813
518	req->type = REQ_READAHEAD;	814	req->type = REQ_READAHEAD;
		815	req->fh = newSVsv (fh);
519	req->fd = PerlIO_fileno (fh);	816	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
520	req->offset = offset;	817	req->offset = offset;
521	req->length = length;	818	req->length = length;
522	req->callback = SvREFCNT_inc (callback);
523		819
524	send_req (req);	820	send_req (req);
525	}	821	}
526		822
527	void	823	void
…		…
531	ALIAS:	827	ALIAS:
532	aio_stat = REQ_STAT	828	aio_stat = REQ_STAT
533	aio_lstat = REQ_LSTAT	829	aio_lstat = REQ_LSTAT
534	CODE:	830	CODE:
535	{	831	{
536	aio_req req;	832	dREQ;
537
538	Newz (0, req, 1, aio_cb);
539
540	if (!req)
541	croak ("out of memory during aio_req allocation");
542		833
543	New (0, req->statdata, 1, Stat_t);	834	New (0, req->statdata, 1, Stat_t);
544
545	if (!req->statdata)	835	if (!req->statdata)
		836	{
		837	free_req (req);
546	croak ("out of memory during aio_req->statdata allocation");	838	croak ("out of memory during aio_req->statdata allocation");
		839	}
547		840
548	if (SvPOK (fh_or_path))	841	if (SvPOK (fh_or_path))
549	{	842	{
550	req->type = ix;	843	req->type = ix;
551	req->data = newSVsv (fh_or_path);	844	req->data = newSVsv (fh_or_path);
552	req->dataptr = SvPV_nolen (req->data);	845	req->dataptr = SvPVbyte_nolen (req->data);
553	}	846	}
554	else	847	else
555	{	848	{
556	req->type = REQ_FSTAT;	849	req->type = REQ_FSTAT;
		850	req->fh = newSVsv (fh_or_path);
557	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	851	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
558	}	852	}
559
560	req->callback = SvREFCNT_inc (callback);
561		853
562	send_req (req);	854	send_req (req);
563	}	855	}
564		856
565	void	857	void
566	aio_unlink(pathname,callback=&PL_sv_undef)	858	aio_unlink(pathname,callback=&PL_sv_undef)
567	SV * pathname	859	SV * pathname
568	SV * callback	860	SV * callback
		861	ALIAS:
		862	aio_unlink = REQ_UNLINK
		863	aio_rmdir = REQ_RMDIR
569	CODE:	864	CODE:
570	{	865	{
571	aio_req req;	866	dREQ;
572		867
573	Newz (0, req, 1, aio_cb);	868	req->type = ix;
		869	req->data = newSVsv (pathname);
		870	req->dataptr = SvPVbyte_nolen (req->data);
574		871
575	if (!req)	872	send_req (req);
576	croak ("out of memory during aio_req allocation");	873	}
		874
		875	void
		876	aio_symlink(oldpath,newpath,callback=&PL_sv_undef)
		877	SV * oldpath
		878	SV * newpath
		879	SV * callback
		880	CODE:
		881	{
		882	dREQ;
577		883
578	req->type = REQ_UNLINK;	884	req->type = REQ_SYMLINK;
		885	req->fh = newSVsv (oldpath);
		886	req->data2ptr = SvPVbyte_nolen (req->fh);
579	req->data = newSVsv (pathname);	887	req->data = newSVsv (newpath);
580	req->dataptr = SvPV_nolen (req->data);	888	req->dataptr = SvPVbyte_nolen (req->data);
581	req->callback = SvREFCNT_inc (callback);
582		889
583	send_req (req);	890	send_req (req);
584	}	891	}
585		892
586	void	893	void

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Comparing IO-AIO/AIO.xs (file contents): Revision 1.11 by root, Wed Jul 20 21:55:27 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 1.11 by root, Wed Jul 20 21:55:27 2005 UTC vs.
Revision 1.35 by root, Tue Aug 23 01:16:50 2005 UTC