[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 1.34 by root, Tue Aug 23 00:03:14 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	# else
		29	# error sendfile support requested but not available
		30	# endif
		31	#endif
21		32
22	#if __ia64	33	#if __ia64
23	# define STACKSIZE 65536	34	# define STACKSIZE 65536
24	#else	35	#else
25	# define STACKSIZE 4096	36	# define STACKSIZE 4096
27		38
28	enum {	39	enum {
29	REQ_QUIT,	40	REQ_QUIT,
30	REQ_OPEN, REQ_CLOSE,	41	REQ_OPEN, REQ_CLOSE,
31	REQ_READ, REQ_WRITE, REQ_READAHEAD,	42	REQ_READ, REQ_WRITE, REQ_READAHEAD,
		43	REQ_SENDFILE,
32	REQ_STAT, REQ_LSTAT, REQ_FSTAT, REQ_UNLINK,	44	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
33	REQ_FSYNC, REQ_FDATASYNC,	45	REQ_FSYNC, REQ_FDATASYNC,
		46	REQ_UNLINK, REQ_RMDIR,
		47	REQ_SYMLINK,
34	};	48	};
35		49
36	typedef struct aio_cb {	50	typedef struct aio_cb {
37	struct aio_cb *volatile next;	51	struct aio_cb *volatile next;
38		52
39	int type;	53	int type;
40		54
41	int fd;	55	int fd, fd2;
42	off_t offset;	56	off_t offset;
43	size_t length;	57	size_t length;
44	ssize_t result;	58	ssize_t result;
45	mode_t mode; /* open */	59	mode_t mode; /* open */
46	int errorno;	60	int errorno;
47	SV data, callback;	61	SV data, callback;
48	void *dataptr;	62	SV fh, fh2;
		63	void dataptr, data2ptr;
49	STRLEN dataoffset;	64	STRLEN dataoffset;
50		65
51	Stat_t *statdata;	66	Stat_t *statdata;
52	} aio_cb;	67	} aio_cb;
53		68
54	typedef aio_cb *aio_req;	69	typedef aio_cb *aio_req;
55		70
56	static int started;	71	static int started, wanted;
57	static int nreqs;	72	static volatile int nreqs;
58	static int max_outstanding = 1<<30;	73	static int max_outstanding = 1<<30;
59	static int respipe [2];	74	static int respipe [2];
60		75
61	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	76	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;
62	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;	77	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
63	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	78	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
64		79
65	static volatile aio_req reqs, reqe; /* queue start, queue end */	80	static volatile aio_req reqs, reqe; /* queue start, queue end */
66	static volatile aio_req ress, rese; /* queue start, queue end */	81	static volatile aio_req ress, rese; /* queue start, queue end */
67		82
		83	static void free_req (aio_req req)
		84	{
		85	if (req->data)
		86	SvREFCNT_dec (req->data);
		87
		88	if (req->fh)
		89	SvREFCNT_dec (req->fh);
		90
		91	if (req->fh2)
		92	SvREFCNT_dec (req->fh2);
		93
		94	if (req->statdata)
		95	Safefree (req->statdata);
		96
		97	if (req->callback)
		98	SvREFCNT_dec (req->callback);
		99
		100	Safefree (req);
		101	}
		102
68	static void	103	static void
69	poll_wait ()	104	poll_wait ()
70	{	105	{
71	if (!nreqs)	106	if (nreqs && !ress)
72	return;	107	{
73
74	fd_set rfd;	108	fd_set rfd;
75	FD_ZERO(&rfd);	109	FD_ZERO(&rfd);
76	FD_SET(respipe [0], &rfd);	110	FD_SET(respipe [0], &rfd);
77		111
78	select (respipe [0] + 1, &rfd, 0, 0, 0);	112	select (respipe [0] + 1, &rfd, 0, 0, 0);
		113	}
79	}	114	}
80		115
81	static int	116	static int
82	poll_cb (pTHX)	117	poll_cb ()
83	{	118	{
84	dSP;	119	dSP;
85	int count = 0;	120	int count = 0;
		121	int do_croak = 0;
86	aio_req req;	122	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		123
95	for (;;)	124	for (;;)
96	{	125	{
97	pthread_mutex_lock (&reslock);	126	pthread_mutex_lock (&reslock);
98
99	req = ress;	127	req = ress;
100		128
101	if (ress)	129	if (req)
102	{	130	{
103	ress = ress->next;	131	ress = req->next;
		132
104	if (!ress) rese = 0;	133	if (!ress)
		134	{
		135	/* read any signals sent by the worker threads */
		136	char buf [32];
		137	while (read (respipe [0], buf, 32) == 32)
		138	;
		139
		140	rese = 0;
		141	}
105	}	142	}
106		143
107	pthread_mutex_unlock (&reslock);	144	pthread_mutex_unlock (&reslock);
108		145
109	if (!req)	146	if (!req)
…		…
117	{	154	{
118	int errorno = errno;	155	int errorno = errno;
119	errno = req->errorno;	156	errno = req->errorno;
120		157
121	if (req->type == REQ_READ)	158	if (req->type == REQ_READ)
122	SvCUR_set (req->data, req->dataoffset	159	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
123	+ req->result > 0 ? req->result : 0);
124		160
		161	if (req->data2ptr && (req->type == REQ_READ \|\| req->type == REQ_WRITE))
		162	SvREADONLY_off (req->data);
		163
125	if (req->data)	164	if (req->statdata)
126	SvREFCNT_dec (req->data);
127
128	if (req->type == REQ_STAT \|\| req->type == REQ_LSTAT \|\| req->type == REQ_FSTAT)
129	{	165	{
130	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	166	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
131	PL_laststatval = req->result;	167	PL_laststatval = req->result;
132	PL_statcache = *(req->statdata);	168	PL_statcache = *(req->statdata);
133
134	Safefree (req->statdata);
135	}	169	}
136		170
		171	ENTER;
137	PUSHMARK (SP);	172	PUSHMARK (SP);
138	XPUSHs (sv_2mortal (newSViv (req->result)));	173	XPUSHs (sv_2mortal (newSViv (req->result)));
139		174
140	if (req->type == REQ_OPEN)	175	if (req->type == REQ_OPEN)
141	{	176	{
…		…
144		179
145	PUTBACK;	180	PUTBACK;
146	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);	181	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);
147	SPAGAIN;	182	SPAGAIN;
148		183
149	fh = POPs;	184	fh = SvREFCNT_inc (POPs);
150		185
151	PUSHMARK (SP);	186	PUSHMARK (SP);
152	XPUSHs (fh);	187	XPUSHs (sv_2mortal (fh));
153	}	188	}
154		189
		190	if (SvOK (req->callback))
		191	{
155	PUTBACK;	192	PUTBACK;
156	call_sv (req->callback, G_VOID \| G_EVAL);	193	call_sv (req->callback, G_VOID \| G_EVAL);
157	SPAGAIN;	194	SPAGAIN;
		195
		196	if (SvTRUE (ERRSV))
		197	{
		198	free_req (req);
		199	croak (0);
		200	}
158		201	}
159	if (req->callback)	202
160	SvREFCNT_dec (req->callback);	203	LEAVE;
161		204
162	errno = errorno;	205	errno = errorno;
163	count++;	206	count++;
164	}	207	}
165		208
166	Safefree (req);	209	free_req (req);
167	}	210	}
168		211
169	return count;	212	return count;
170	}	213	}
171		214
…		…
192	}	235	}
193		236
194	static void	237	static void
195	send_req (aio_req req)	238	send_req (aio_req req)
196	{	239	{
		240	while (started < wanted && nreqs >= started)
		241	start_thread ();
		242
197	nreqs++;	243	nreqs++;
198		244
199	pthread_mutex_lock (&reqlock);	245	pthread_mutex_lock (&reqlock);
200		246
201	req->next = 0;	247	req->next = 0;
…		…
209	reqe = reqs = req;	255	reqe = reqs = req;
210		256
211	pthread_cond_signal (&reqwait);	257	pthread_cond_signal (&reqwait);
212	pthread_mutex_unlock (&reqlock);	258	pthread_mutex_unlock (&reqlock);
213		259
214	while (nreqs > max_outstanding)	260	if (nreqs > max_outstanding)
		261	for (;;)
		262	{
		263	poll_cb ();
		264
		265	if (nreqs <= max_outstanding)
		266	break;
		267
		268	poll_wait ();
		269	}
		270	}
		271
		272	static void
		273	end_thread (void)
		274	{
		275	aio_req req;
		276	Newz (0, req, 1, aio_cb);
		277	req->type = REQ_QUIT;
		278
		279	send_req (req);
		280	}
		281
		282	static void min_parallel (int nthreads)
		283	{
		284	if (wanted < nthreads)
		285	wanted = nthreads;
		286	}
		287
		288	static void max_parallel (int nthreads)
		289	{
		290	int cur = started;
		291
		292	if (wanted > nthreads)
		293	wanted = nthreads;
		294
		295	while (cur > wanted)
		296	{
		297	end_thread ();
		298	cur--;
		299	}
		300
		301	while (started > wanted)
215	{	302	{
216	poll_wait ();	303	poll_wait ();
217	poll_cb ();	304	poll_cb ();
218	}	305	}
219	}	306	}
220		307
221	static void	308	static void create_pipe ()
222	end_thread (void)
223	{	309	{
		310	if (pipe (respipe))
		311	croak ("unable to initialize result pipe");
		312
		313	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
		314	croak ("cannot set result pipe to nonblocking mode");
		315
		316	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
		317	croak ("cannot set result pipe to nonblocking mode");
		318	}
		319
		320	static void atfork_prepare (void)
		321	{
		322	pthread_mutex_lock (&reqlock);
		323	pthread_mutex_lock (&reslock);
		324	}
		325
		326	static void atfork_parent (void)
		327	{
		328	pthread_mutex_unlock (&reslock);
		329	pthread_mutex_unlock (&reqlock);
		330	}
		331
		332	static void atfork_child (void)
		333	{
224	aio_req req;	334	aio_req prv;
225	New (0, req, 1, aio_cb);
226	req->type = REQ_QUIT;
227		335
228	send_req (req);	336	started = 0;
229	}
230		337
231	static void	338	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	{	339	{
251	/* write: check length and adjust. */	340	prv = reqs;
252	if (length < 0 \|\| length + dataoffset > svlen)	341	reqs = prv->next;
253	length = svlen - dataoffset;	342	free_req (prv);
254	}	343	}
255	else	344
		345	reqs = reqe = 0;
		346
		347	while (ress)
256	{	348	{
257	/* read: grow scalar as necessary */	349	prv = ress;
258	svptr = SvGROW (data, length + dataoffset);	350	ress = prv->next;
		351	free_req (prv);
259	}	352	}
		353
		354	ress = rese = 0;
260		355
261	if (length < 0)	356	close (respipe [0]);
262	croak ("length must not be negative");	357	close (respipe [1]);
		358	create_pipe ();
263		359
264	Newz (0, req, 1, aio_cb);	360	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	}	361	}
		362
		363	/*****************************************************************************/
		364	/* work around various missing functions */
		365
		366	#if !HAVE_PREADWRITE
		367	# define pread aio_pread
		368	# define pwrite aio_pwrite
		369
		370	/*
		371	* make our pread/pwrite safe against themselves, but not against
		372	* normal read/write by using a mutex. slows down execution a lot,
		373	* but that's your problem, not mine.
		374	*/
		375	static pthread_mutex_t iolock = PTHREAD_MUTEX_INITIALIZER;
		376
		377	static ssize_t
		378	pread (int fd, void *buf, size_t count, off_t offset)
		379	{
		380	ssize_t res;
		381	off_t ooffset;
		382
		383	pthread_mutex_lock (&iolock);
		384	ooffset = lseek (fd, 0, SEEK_CUR);
		385	lseek (fd, offset, SEEK_SET);
		386	res = read (fd, buf, count);
		387	lseek (fd, ooffset, SEEK_SET);
		388	pthread_mutex_unlock (&iolock);
		389
		390	return res;
		391	}
		392
		393	static ssize_t
		394	pwrite (int fd, void *buf, size_t count, off_t offset)
		395	{
		396	ssize_t res;
		397	off_t ooffset;
		398
		399	pthread_mutex_lock (&iolock);
		400	ooffset = lseek (fd, 0, SEEK_CUR);
		401	lseek (fd, offset, SEEK_SET);
		402	res = write (fd, buf, count);
		403	lseek (fd, offset, SEEK_SET);
		404	pthread_mutex_unlock (&iolock);
		405
		406	return res;
		407	}
		408	#endif
		409
		410	#if !HAVE_FDATASYNC
		411	# define fdatasync fsync
		412	#endif
		413
		414	#if !HAVE_READAHEAD
		415	# define readahead aio_readahead
		416
		417	static char readahead_buf[4096];
		418
		419	static ssize_t
		420	readahead (int fd, off_t offset, size_t count)
		421	{
		422	while (count > 0)
		423	{
		424	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
		425
		426	pread (fd, readahead_buf, len, offset);
		427	offset += len;
		428	count -= len;
		429	}
		430
		431	errno = 0;
		432	}
		433	#endif
		434
		435	/* sendfile always needs emulation */
		436	static ssize_t
		437	sendfile_ (int ofd, int ifd, off_t offset, size_t count)
		438	{
		439	ssize_t res;
		440
		441	if (!count)
		442	return 0;
		443
		444	#if __linux
		445	res = sendfile (ofd, ifd, &offset, count);
		446
		447	#elif __freebsd
		448	/*
		449	* Of course, the freebsd sendfile is a dire hack with no thoughts
		450	* wasted on making it similar to other i/o functions.
		451	*/
		452	{
		453	off_t sbytes;
		454	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
		455
		456	if (!res && errno == EAGAIN)
		457	/* maybe on others, too, as usual, the manpage leaves you guessing */
		458	res = sbytes;
		459	}
		460
		461	#elif __hpux
		462	res = sendfile (ofd, ifd, offset, count, 0, 0);
		463
		464	#else
		465	res = -1;
		466	errno = ENOSYS;
		467	#endif
		468
		469	if (res < 0 && (errno == ENOSYS \|\| errno == EINVAL \|\| errno == ENOTSOCK))
		470	{
		471	/* emulate sendfile. this is a major pain in the ass */
		472	char *buf = malloc (4096);
		473	res = 0;
		474
		475	for (;;)
		476	{
		477	ssize_t cnt;
		478
		479	cnt = pread (ifd, buf, 4096, offset);
		480
		481	if (cnt <= 0)
		482	{
		483	if (cnt && !res) res = -1;
		484	break;
		485	}
		486
		487	cnt = write (ofd, buf, cnt);
		488
		489	if (cnt <= 0)
		490	{
		491	if (cnt && !res) res = -1;
		492	break;
		493	}
		494
		495	offset += cnt;
		496	res += cnt;
		497	}
		498
		499	{
		500	int errorno = errno;
		501	free (buf);
		502	errno = errorno;
		503	}
		504	}
		505
		506	return res;
		507	}
		508
		509	/*****************************************************************************/
279		510
280	static void *	511	static void *
281	aio_proc (void *thr_arg)	512	aio_proc (void *thr_arg)
282	{	513	{
283	aio_req req;	514	aio_req req;
…		…
309		540
310	type = req->type;	541	type = req->type;
311		542
312	switch (type)	543	switch (type)
313	{	544	{
314	case REQ_READ: req->result = pread64 (req->fd, req->dataptr, req->length, req->offset); break;	545	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;	546	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
316	#if SYS_readahead	547
317	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	548	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
318	#else	549	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		550
322	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	551	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
323	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	552	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
324	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	553	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
325		554
326	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;	555	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
327	case REQ_CLOSE: req->result = close (req->fd); break;	556	case REQ_CLOSE: req->result = close (req->fd); break;
328	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	557	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
		558	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
		559	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
329		560
		561	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
330	case REQ_FSYNC: req->result = fsync (req->fd); break;	562	case REQ_FSYNC: req->result = fsync (req->fd); break;
331	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
332		563
333	case REQ_QUIT:	564	case REQ_QUIT:
334	break;	565	break;
335		566
336	default:	567	default:
…		…
362	while (type != REQ_QUIT);	593	while (type != REQ_QUIT);
363		594
364	return 0;	595	return 0;
365	}	596	}
366		597
		598	#define dREQ \
		599	aio_req req; \
		600	\
		601	if (SvOK (callback) && !SvROK (callback)) \
		602	croak ("clalback must be undef or of reference type"); \
		603	\
		604	Newz (0, req, 1, aio_cb); \
		605	if (!req) \
		606	croak ("out of memory during aio_req allocation"); \
		607	\
		608	req->callback = newSVsv (callback);
		609
367	MODULE = IO::AIO PACKAGE = IO::AIO	610	MODULE = IO::AIO PACKAGE = IO::AIO
368		611
		612	PROTOTYPES: ENABLE
		613
369	BOOT:	614	BOOT:
370	{	615	{
371	if (pipe (respipe))	616	create_pipe ();
372	croak ("unable to initialize result pipe");	617	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	}	618	}
380		619
381	void	620	void
382	min_parallel(nthreads)	621	min_parallel(nthreads)
383	int nthreads	622	int nthreads
384	PROTOTYPE: $	623	PROTOTYPE: $
385	CODE:
386	while (nthreads > started)
387	start_thread ();
388		624
389	void	625	void
390	max_parallel(nthreads)	626	max_parallel(nthreads)
391	int nthreads	627	int nthreads
392	PROTOTYPE: $	628	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		629
409	int	630	int
410	max_outstanding(nreqs)	631	max_outstanding(nreqs)
411	int nreqs	632	int nreqs
412	PROTOTYPE: $	633	PROTOTYPE: $
413	CODE:	634	CODE:
414	RETVAL = max_outstanding;	635	RETVAL = max_outstanding;
415	max_outstanding = nreqs;	636	max_outstanding = nreqs;
416		637
417	void	638	void
418	aio_open(pathname,flags,mode,callback)	639	aio_open(pathname,flags,mode,callback=&PL_sv_undef)
419	SV * pathname	640	SV * pathname
420	int flags	641	int flags
421	int mode	642	int mode
422	SV * callback	643	SV * callback
423	PROTOTYPE: $$$$	644	PROTOTYPE: $$$;$
424	CODE:	645	CODE:
425	{	646	{
426	aio_req req;	647	dREQ;
427
428	Newz (0, req, 1, aio_cb);
429
430	if (!req)
431	croak ("out of memory during aio_req allocation");
432		648
433	req->type = REQ_OPEN;	649	req->type = REQ_OPEN;
434	req->data = newSVsv (pathname);	650	req->data = newSVsv (pathname);
435	req->dataptr = SvPV_nolen (req->data);	651	req->dataptr = SvPVbyte_nolen (req->data);
436	req->fd = flags;	652	req->fd = flags;
437	req->mode = mode;	653	req->mode = mode;
438	req->callback = SvREFCNT_inc (callback);
439		654
440	send_req (req);	655	send_req (req);
441	}	656	}
442		657
443	void	658	void
444	aio_close(fh,callback)	659	aio_close(fh,callback=&PL_sv_undef)
445	InputStream fh	660	SV * fh
446	SV * callback	661	SV * callback
447	PROTOTYPE: $$	662	PROTOTYPE: $;$
448	ALIAS:	663	ALIAS:
449	aio_close = REQ_CLOSE	664	aio_close = REQ_CLOSE
450	aio_fsync = REQ_FSYNC	665	aio_fsync = REQ_FSYNC
451	aio_fdatasync = REQ_FDATASYNC	666	aio_fdatasync = REQ_FDATASYNC
452	CODE:	667	CODE:
453	{	668	{
		669	dREQ;
		670
		671	req->type = ix;
		672	req->fh = newSVsv (fh);
		673	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
		674
		675	send_req (req);
		676	}
		677
		678	void
		679	aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
		680	SV * fh
		681	UV offset
		682	UV length
		683	SV * data
		684	UV dataoffset
		685	SV * callback
		686	ALIAS:
		687	aio_read = REQ_READ
		688	aio_write = REQ_WRITE
		689	PROTOTYPE: $$$$$;$
		690	CODE:
		691	{
454	aio_req req;	692	aio_req req;
		693	STRLEN svlen;
		694	char *svptr = SvPVbyte (data, svlen);
455		695
456	Newz (0, req, 1, aio_cb);	696	SvUPGRADE (data, SVt_PV);
		697	SvPOK_on (data);
457		698
458	if (!req)	699	if (dataoffset < 0)
459	croak ("out of memory during aio_req allocation");	700	dataoffset += svlen;
460		701
461	req->type = ix;	702	if (dataoffset < 0 \|\| dataoffset > svlen)
462	req->fd = PerlIO_fileno (fh);	703	croak ("data offset outside of string");
463	req->callback = SvREFCNT_inc (callback);
464		704
465	send_req (req);	705	if (ix == REQ_WRITE)
466	}	706	{
467		707	/* write: check length and adjust. */
468	void	708	if (length < 0 \|\| length + dataoffset > svlen)
469	aio_read(fh,offset,length,data,dataoffset,callback)	709	length = svlen - dataoffset;
470	InputStream fh	710	}
471	UV offset	711	else
472	IV length	712	{
473	SV * data	713	/* read: grow scalar as necessary */
474	IV dataoffset	714	svptr = SvGROW (data, length + dataoffset);
475	SV * callback	715	}
476	PROTOTYPE: $$$$$$
477	CODE:
478	read_write (aTHX_ 0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
479
480	void
481	aio_write(fh,offset,length,data,dataoffset,callback)
482	OutputStream fh
483	UV offset
484	IV length
485	SV * data
486	IV dataoffset
487	SV * callback
488	PROTOTYPE: $$$$$$
489	CODE:
490	read_write (aTHX_ 1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
491
492	void
493	aio_readahead(fh,offset,length,callback)
494	InputStream fh
495	UV offset
496	IV length
497	SV * callback
498	PROTOTYPE: $$$$
499	CODE:
500	{
501	aio_req req;
502		716
503	if (length < 0)	717	if (length < 0)
504	croak ("length must not be negative");	718	croak ("length must not be negative");
505		719
506	Newz (0, req, 1, aio_cb);	720	{
		721	dREQ;
507		722
508	if (!req)	723	req->type = ix;
509	croak ("out of memory during aio_req allocation");	724	req->fh = newSVsv (fh);
		725	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
		726	: IoOFP (sv_2io (fh)));
		727	req->offset = offset;
		728	req->length = length;
		729	req->data = SvREFCNT_inc (data);
		730	req->dataptr = (char *)svptr + dataoffset;
		731
		732	if (!SvREADONLY (data))
		733	{
		734	SvREADONLY_on (data);
		735	req->data2ptr = (void *)data;
		736	}
		737
		738	send_req (req);
		739	}
		740	}
		741
		742	void
		743	aio_sendfile(out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)
		744	SV * out_fh
		745	SV * in_fh
		746	UV in_offset
		747	UV length
		748	SV * callback
		749	PROTOTYPE: $$$$;$
		750	CODE:
		751	{
		752	dREQ;
		753
		754	req->type = REQ_SENDFILE;
		755	req->fh = newSVsv (out_fh);
		756	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
		757	req->fh2 = newSVsv (in_fh);
		758	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
		759	req->offset = in_offset;
		760	req->length = length;
		761
		762	send_req (req);
		763	}
		764
		765	void
		766	aio_readahead(fh,offset,length,callback=&PL_sv_undef)
		767	SV * fh
		768	UV offset
		769	IV length
		770	SV * callback
		771	PROTOTYPE: $$$;$
		772	CODE:
		773	{
		774	dREQ;
510		775
511	req->type = REQ_READAHEAD;	776	req->type = REQ_READAHEAD;
		777	req->fh = newSVsv (fh);
512	req->fd = PerlIO_fileno (fh);	778	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
513	req->offset = offset;	779	req->offset = offset;
514	req->length = length;	780	req->length = length;
515	req->callback = SvREFCNT_inc (callback);
516		781
517	send_req (req);	782	send_req (req);
518	}	783	}
519		784
520	void	785	void
521	aio_stat(fh_or_path,callback)	786	aio_stat(fh_or_path,callback=&PL_sv_undef)
522	SV * fh_or_path	787	SV * fh_or_path
523	SV * callback	788	SV * callback
524	PROTOTYPE: $$
525	ALIAS:	789	ALIAS:
		790	aio_stat = REQ_STAT
526	aio_lstat = 1	791	aio_lstat = REQ_LSTAT
527	CODE:	792	CODE:
528	{	793	{
529	aio_req req;	794	dREQ;
530
531	Newz (0, req, 1, aio_cb);
532
533	if (!req)
534	croak ("out of memory during aio_req allocation");
535		795
536	New (0, req->statdata, 1, Stat_t);	796	New (0, req->statdata, 1, Stat_t);
537
538	if (!req->statdata)	797	if (!req->statdata)
		798	{
		799	free_req (req);
539	croak ("out of memory during aio_req->statdata allocation");	800	croak ("out of memory during aio_req->statdata allocation");
		801	}
540		802
541	if (SvPOK (fh_or_path))	803	if (SvPOK (fh_or_path))
542	{	804	{
543	req->type = ix ? REQ_LSTAT : REQ_STAT;	805	req->type = ix;
544	req->data = newSVsv (fh_or_path);	806	req->data = newSVsv (fh_or_path);
545	req->dataptr = SvPV_nolen (req->data);	807	req->dataptr = SvPVbyte_nolen (req->data);
546	}	808	}
547	else	809	else
548	{	810	{
549	req->type = REQ_FSTAT;	811	req->type = REQ_FSTAT;
		812	req->fh = newSVsv (fh_or_path);
550	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	813	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
551	}	814	}
552		815
553	req->callback = SvREFCNT_inc (callback);
554
555	send_req (req);	816	send_req (req);
556	}	817	}
557		818
558	void	819	void
559	aio_unlink(pathname,callback)	820	aio_unlink(pathname,callback=&PL_sv_undef)
560	SV * pathname	821	SV * pathname
561	SV * callback	822	SV * callback
562	PROTOTYPE: $$	823	ALIAS:
		824	aio_unlink = REQ_UNLINK
		825	aio_rmdir = REQ_RMDIR
563	CODE:	826	CODE:
564	{	827	{
565	aio_req req;	828	dREQ;
566		829
567	Newz (0, req, 1, aio_cb);	830	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);	831	req->data = newSVsv (pathname);
574	req->dataptr = SvPV_nolen (req->data);	832	req->dataptr = SvPVbyte_nolen (req->data);
575	req->callback = SvREFCNT_inc (callback);
576		833
577	send_req (req);	834	send_req (req);
578	}	835	}
		836
		837	void
		838	aio_symlink(oldpath,newpath,callback=&PL_sv_undef)
		839	SV * oldpath
		840	SV * newpath
		841	SV * callback
		842	CODE:
		843	{
		844	dREQ;
		845
		846	req->type = REQ_SYMLINK;
		847	req->fh = newSVsv (oldpath);
		848	req->data2ptr = SvPVbyte_nolen (req->fh);
		849	req->data = newSVsv (newpath);
		850	req->dataptr = SvPVbyte_nolen (req->data);
		851
		852	send_req (req);
		853	}
		854
		855	void
		856	flush()
		857	PROTOTYPE:
		858	CODE:
		859	while (nreqs)
		860	{
		861	poll_wait ();
		862	poll_cb ();
		863	}
		864
		865	void
		866	poll()
		867	PROTOTYPE:
		868	CODE:
		869	if (nreqs)
		870	{
		871	poll_wait ();
		872	poll_cb ();
		873	}
579		874
580	int	875	int
581	poll_fileno()	876	poll_fileno()
582	PROTOTYPE:	877	PROTOTYPE:
583	CODE:	878	CODE:
…		…
587		882
588	int	883	int
589	poll_cb(...)	884	poll_cb(...)
590	PROTOTYPE:	885	PROTOTYPE:
591	CODE:	886	CODE:
592	RETVAL = poll_cb (aTHX);	887	RETVAL = poll_cb ();
593	OUTPUT:	888	OUTPUT:
594	RETVAL	889	RETVAL
595		890
596	void	891	void
597	poll_wait()	892	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 1.34 by root, Tue Aug 23 00:03:14 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 1.34 by root, Tue Aug 23 00:03:14 2005 UTC