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

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.6 by root, Mon Jul 11 01:03:17 2005 UTC vs.
Revision 1.33 by root, Mon Aug 22 23:21:57 2005 UTC

…		…
		1	#define _REENTRANT 1
		2	#include <errno.h>
		3
1	#include "EXTERN.h"	4	#include "EXTERN.h"
2	#include "perl.h"	5	#include "perl.h"
3	#include "XSUB.h"	6	#include "XSUB.h"
4		7
		8	#include "autoconf/config.h"
		9
		10	#include <pthread.h>
		11
5	#include <sys/types.h>	12	#include <sys/types.h>
6	#include <sys/stat.h>	13	#include <sys/stat.h>
		14
7	#include <unistd.h>	15	#include <unistd.h>
8	#include <fcntl.h>	16	#include <fcntl.h>
9	#include <signal.h>	17	#include <signal.h>
10	#include <sched.h>	18	#include <sched.h>
11	#include <endian.h>
12		19
13	#include <pthread.h>	20	#if HAVE_SENDFILE
		21	# if __linux
		22	# include <sys/sendfile.h>
		23	# elif __freebsd
14	#include <sys/syscall.h>	24	# include <sys/socket.h>
15		25	# include <sys/uio.h>
16	typedef void InputStream; / hack, but 5.6.1 is simply toooo old ;) */	26	# elif __hpux
17	typedef void OutputStream; / hack, but 5.6.1 is simply toooo old ;) */	27	# include <sys/socket.h>
18	typedef void InOutStream; / hack, but 5.6.1 is simply toooo old ;) */	28	# endif
		29	#endif
19		30
20	#if __ia64	31	#if __ia64
21	# define STACKSIZE 65536	32	# define STACKSIZE 65536
22	#else	33	#else
23	# define STACKSIZE 4096	34	# define STACKSIZE 4096
25		36
26	enum {	37	enum {
27	REQ_QUIT,	38	REQ_QUIT,
28	REQ_OPEN, REQ_CLOSE,	39	REQ_OPEN, REQ_CLOSE,
29	REQ_READ, REQ_WRITE, REQ_READAHEAD,	40	REQ_READ, REQ_WRITE, REQ_READAHEAD,
		41	REQ_SENDFILE,
30	REQ_STAT, REQ_LSTAT, REQ_FSTAT, REQ_UNLINK,	42	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
31	REQ_FSYNC, REQ_FDATASYNC,	43	REQ_FSYNC, REQ_FDATASYNC,
		44	REQ_UNLINK, REQ_RMDIR,
		45	REQ_SYMLINK,
32	};	46	};
33		47
34	typedef struct aio_cb {	48	typedef struct aio_cb {
35	struct aio_cb *volatile next;	49	struct aio_cb *volatile next;
36		50
37	int type;	51	int type;
38		52
39	int fd;	53	int fd, fd2;
40	off_t offset;	54	off_t offset;
41	size_t length;	55	size_t length;
42	ssize_t result;	56	ssize_t result;
43	mode_t mode; /* open */	57	mode_t mode; /* open */
44	int errorno;	58	int errorno;
45	SV data, callback;	59	SV data, callback;
46	void *dataptr;	60	SV fh, fh2;
		61	void dataptr, data2ptr;
47	STRLEN dataoffset;	62	STRLEN dataoffset;
48		63
49	Stat_t *statdata;	64	Stat_t *statdata;
50	} aio_cb;	65	} aio_cb;
51		66
52	typedef aio_cb *aio_req;	67	typedef aio_cb *aio_req;
53		68
54	static int started;	69	static int started, wanted;
55	static int nreqs;	70	static volatile int nreqs;
56	static int max_outstanding = 1<<30;	71	static int max_outstanding = 1<<30;
57	static int respipe [2];	72	static int respipe [2];
58		73
59	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	74	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;
60	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;	75	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
61	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	76	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
62		77
63	static volatile aio_req reqs, reqe; /* queue start, queue end */	78	static volatile aio_req reqs, reqe; /* queue start, queue end */
64	static volatile aio_req ress, rese; /* queue start, queue end */	79	static volatile aio_req ress, rese; /* queue start, queue end */
65		80
		81	static void free_req (aio_req req)
		82	{
		83	if (req->data)
		84	SvREFCNT_dec (req->data);
		85
		86	if (req->fh)
		87	SvREFCNT_dec (req->fh);
		88
		89	if (req->fh2)
		90	SvREFCNT_dec (req->fh2);
		91
		92	if (req->statdata)
		93	Safefree (req->statdata);
		94
		95	if (req->callback)
		96	SvREFCNT_dec (req->callback);
		97
		98	Safefree (req);
		99	}
		100
66	static void	101	static void
67	poll_wait ()	102	poll_wait ()
68	{	103	{
69	if (!nreqs)	104	if (nreqs && !ress)
70	return;	105	{
71
72	fd_set rfd;	106	fd_set rfd;
73	FD_ZERO(&rfd);	107	FD_ZERO(&rfd);
74	FD_SET(respipe [0], &rfd);	108	FD_SET(respipe [0], &rfd);
75		109
76	select (respipe [0] + 1, &rfd, 0, 0, 0);	110	select (respipe [0] + 1, &rfd, 0, 0, 0);
		111	}
77	}	112	}
78		113
79	static int	114	static int
80	poll_cb ()	115	poll_cb ()
81	{	116	{
82	dSP;	117	dSP;
83	int count = 0;	118	int count = 0;
		119	int do_croak = 0;
84	aio_req req;	120	aio_req req;
85
86	{
87	/* read and signals sent by the worker threads */
88	char buf [32];
89	while (read (respipe [0], buf, 32) > 0)
90	;
91	}
92		121
93	for (;;)	122	for (;;)
94	{	123	{
95	pthread_mutex_lock (&reslock);	124	pthread_mutex_lock (&reslock);
96
97	req = ress;	125	req = ress;
98		126
99	if (ress)	127	if (req)
100	{	128	{
101	ress = ress->next;	129	ress = req->next;
		130
102	if (!ress) rese = 0;	131	if (!ress)
		132	{
		133	/* read any signals sent by the worker threads */
		134	char buf [32];
		135	while (read (respipe [0], buf, 32) == 32)
		136	;
		137
		138	rese = 0;
		139	}
103	}	140	}
104		141
105	pthread_mutex_unlock (&reslock);	142	pthread_mutex_unlock (&reslock);
106		143
107	if (!req)	144	if (!req)
…		…
115	{	152	{
116	int errorno = errno;	153	int errorno = errno;
117	errno = req->errorno;	154	errno = req->errorno;
118		155
119	if (req->type == REQ_READ)	156	if (req->type == REQ_READ)
120	SvCUR_set (req->data, req->dataoffset	157	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
121	+ req->result > 0 ? req->result : 0);
122		158
		159	if (req->data2ptr && (req->type == REQ_READ \|\| req->type == REQ_WRITE))
		160	SvREADONLY_off (req->data);
		161
123	if (req->data)	162	if (req->statdata)
124	SvREFCNT_dec (req->data);
125
126	if (req->type == REQ_STAT \|\| req->type == REQ_LSTAT \|\| req->type == REQ_FSTAT)
127	{	163	{
128	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	164	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
129	PL_laststatval = req->result;	165	PL_laststatval = req->result;
130	PL_statcache = *(req->statdata);	166	PL_statcache = *(req->statdata);
131
132	Safefree (req->statdata);
133	}	167	}
134		168
		169	ENTER;
135	PUSHMARK (SP);	170	PUSHMARK (SP);
136	XPUSHs (sv_2mortal (newSViv (req->result)));	171	XPUSHs (sv_2mortal (newSViv (req->result)));
137		172
138	if (req->type == REQ_OPEN)	173	if (req->type == REQ_OPEN)
139	{	174	{
…		…
142		177
143	PUTBACK;	178	PUTBACK;
144	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);	179	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);
145	SPAGAIN;	180	SPAGAIN;
146		181
147	fh = POPs;	182	fh = SvREFCNT_inc (POPs);
148		183
149	PUSHMARK (SP);	184	PUSHMARK (SP);
150	XPUSHs (fh);	185	XPUSHs (sv_2mortal (fh));
151	}	186	}
152		187
		188	if (SvOK (req->callback))
		189	{
153	PUTBACK;	190	PUTBACK;
154	call_sv (req->callback, G_VOID \| G_EVAL);	191	call_sv (req->callback, G_VOID \| G_EVAL);
155	SPAGAIN;	192	SPAGAIN;
		193
		194	if (SvTRUE (ERRSV))
		195	{
		196	free_req (req);
		197	croak (0);
		198	}
156		199	}
157	if (req->callback)	200
158	SvREFCNT_dec (req->callback);	201	LEAVE;
159		202
160	errno = errorno;	203	errno = errorno;
161	count++;	204	count++;
162	}	205	}
163		206
164	Safefree (req);	207	free_req (req);
165	}	208	}
166		209
167	return count;	210	return count;
168	}	211	}
169		212
…		…
190	}	233	}
191		234
192	static void	235	static void
193	send_req (aio_req req)	236	send_req (aio_req req)
194	{	237	{
		238	while (started < wanted && nreqs >= started)
		239	start_thread ();
		240
195	nreqs++;	241	nreqs++;
196		242
197	pthread_mutex_lock (&reqlock);	243	pthread_mutex_lock (&reqlock);
198		244
199	req->next = 0;	245	req->next = 0;
…		…
207	reqe = reqs = req;	253	reqe = reqs = req;
208		254
209	pthread_cond_signal (&reqwait);	255	pthread_cond_signal (&reqwait);
210	pthread_mutex_unlock (&reqlock);	256	pthread_mutex_unlock (&reqlock);
211		257
212	while (nreqs > max_outstanding)	258	if (nreqs > max_outstanding)
		259	for (;;)
		260	{
		261	poll_cb ();
		262
		263	if (nreqs <= max_outstanding)
		264	break;
		265
		266	poll_wait ();
		267	}
		268	}
		269
		270	static void
		271	end_thread (void)
		272	{
		273	aio_req req;
		274	Newz (0, req, 1, aio_cb);
		275	req->type = REQ_QUIT;
		276
		277	send_req (req);
		278	}
		279
		280	static void min_parallel (int nthreads)
		281	{
		282	if (wanted < nthreads)
		283	wanted = nthreads;
		284	}
		285
		286	static void max_parallel (int nthreads)
		287	{
		288	int cur = started;
		289
		290	if (wanted > nthreads)
		291	wanted = nthreads;
		292
		293	while (cur > wanted)
		294	{
		295	end_thread ();
		296	cur--;
		297	}
		298
		299	while (started > wanted)
213	{	300	{
214	poll_wait ();	301	poll_wait ();
215	poll_cb ();	302	poll_cb ();
216	}	303	}
217	}	304	}
218		305
219	static void	306	static void create_pipe ()
220	end_thread (void)
221	{	307	{
		308	if (pipe (respipe))
		309	croak ("unable to initialize result pipe");
		310
		311	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
		312	croak ("cannot set result pipe to nonblocking mode");
		313
		314	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
		315	croak ("cannot set result pipe to nonblocking mode");
		316	}
		317
		318	static void atfork_prepare (void)
		319	{
		320	pthread_mutex_lock (&reqlock);
		321	pthread_mutex_lock (&reslock);
		322	}
		323
		324	static void atfork_parent (void)
		325	{
		326	pthread_mutex_unlock (&reslock);
		327	pthread_mutex_unlock (&reqlock);
		328	}
		329
		330	static void atfork_child (void)
		331	{
222	aio_req req;	332	aio_req prv;
223	New (0, req, 1, aio_cb);
224	req->type = REQ_QUIT;
225		333
226	send_req (req);	334	started = 0;
227	}
228		335
229	static void	336	while (reqs)
230	read_write (int dowrite, int fd, off_t offset, size_t length,
231	SV data, STRLEN dataoffset, SV callback)
232	{
233	aio_req req;
234	STRLEN svlen;
235	char *svptr = SvPV (data, svlen);
236
237	SvUPGRADE (data, SVt_PV);
238	SvPOK_on (data);
239
240	if (dataoffset < 0)
241	dataoffset += svlen;
242
243	if (dataoffset < 0 \|\| dataoffset > svlen)
244	croak ("data offset outside of string");
245
246	if (dowrite)
247	{	337	{
248	/* write: check length and adjust. */	338	prv = reqs;
249	if (length < 0 \|\| length + dataoffset > svlen)	339	reqs = prv->next;
250	length = svlen - dataoffset;	340	free_req (prv);
251	}	341	}
252	else	342
		343	reqs = reqe = 0;
		344
		345	while (ress)
253	{	346	{
254	/* read: grow scalar as necessary */	347	prv = ress;
255	svptr = SvGROW (data, length + dataoffset);	348	ress = prv->next;
		349	free_req (prv);
256	}	350	}
		351
		352	ress = rese = 0;
257		353
258	if (length < 0)	354	close (respipe [0]);
259	croak ("length must not be negative");	355	close (respipe [1]);
		356	create_pipe ();
260		357
261	Newz (0, req, 1, aio_cb);	358	atfork_parent ();
262
263	if (!req)
264	croak ("out of memory during aio_req allocation");
265
266	req->type = dowrite ? REQ_WRITE : REQ_READ;
267	req->fd = fd;
268	req->offset = offset;
269	req->length = length;
270	req->data = SvREFCNT_inc (data);
271	req->dataptr = (char *)svptr + dataoffset;
272	req->callback = SvREFCNT_inc (callback);
273
274	send_req (req);
275	}	359	}
		360
		361	/*****************************************************************************/
		362	/* work around various missing functions */
		363
		364	#if !HAVE_PREADWRITE
		365	# define pread aio_pread
		366	# define pwrite aio_pwrite
		367
		368	/*
		369	* make our pread/pwrite safe against themselves, but not against
		370	* normal read/write by using a mutex. slows down execution a lot,
		371	* but that's your problem, not mine.
		372	*/
		373	static pthread_mutex_t iolock = PTHREAD_MUTEX_INITIALIZER;
		374
		375	static ssize_t
		376	pread (int fd, void *buf, size_t count, off_t offset)
		377	{
		378	ssize_t res;
		379	off_t ooffset;
		380
		381	pthread_mutex_lock (&iolock);
		382	ooffset = lseek (fd, 0, SEEK_CUR);
		383	lseek (fd, offset, SEEK_SET);
		384	res = read (fd, buf, count);
		385	lseek (fd, ooffset, SEEK_SET);
		386	pthread_mutex_unlock (&iolock);
		387
		388	return res;
		389	}
		390
		391	static ssize_t
		392	pwrite (int fd, void *buf, size_t count, off_t offset)
		393	{
		394	ssize_t res;
		395	off_t ooffset;
		396
		397	pthread_mutex_lock (&iolock);
		398	ooffset = lseek (fd, 0, SEEK_CUR);
		399	lseek (fd, offset, SEEK_SET);
		400	res = write (fd, buf, count);
		401	lseek (fd, offset, SEEK_SET);
		402	pthread_mutex_unlock (&iolock);
		403
		404	return res;
		405	}
		406	#endif
		407
		408	#if !HAVE_FDATASYNC
		409	# define fdatasync fsync
		410	#endif
		411
		412	#if !HAVE_READAHEAD
		413	# define readahead aio_readahead
		414
		415	static char readahead_buf[4096];
		416
		417	static ssize_t
		418	readahead (int fd, off_t offset, size_t count)
		419	{
		420	while (count > 0)
		421	{
		422	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
		423
		424	pread (fd, readahead_buf, len, offset);
		425	offset += len;
		426	count -= len;
		427	}
		428
		429	errno = 0;
		430	}
		431	#endif
		432
		433	/* sendfile always needs emulation */
		434	static ssize_t
		435	sendfile_ (int ofd, int ifd, off_t offset, size_t count)
		436	{
		437	ssize_t res;
		438
		439	if (!count)
		440	return 0;
		441
		442	#if __linux
		443	res = sendfile (ofd, ifd, &offset, count);
		444
		445	#elif __freebsd
		446	/*
		447	* Of course, the freebsd sendfile is a dire hack with no thoughts
		448	* wasted on making it similar to other i/o functions.
		449	*/
		450	{
		451	off_t sbytes;
		452	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
		453
		454	if (!res && errno == EAGAIN)
		455	/* maybe on others, too, as usual, the manpage leaves you guessing */
		456	res = sbytes;
		457	}
		458
		459	#elif __hpux
		460	res = sendfile (ofd, ifd, offset, count, 0, 0);
		461
		462	#else
		463	res = -1;
		464	errno = ENOSYS;
		465	#endif
		466
		467	if (res < 0 && (errno == ENOSYS \|\| errno == EINVAL \|\| errno == ENOTSOCK))
		468	{
		469	/* emulate sendfile. this is a major pain in the ass */
		470	char *buf = malloc (4096);
		471	res = 0;
		472
		473	for (;;)
		474	{
		475	ssize_t cnt;
		476
		477	cnt = pread (ifd, buf, 4096, offset);
		478
		479	if (cnt <= 0)
		480	{
		481	if (cnt && !res) res = -1;
		482	break;
		483	}
		484
		485	cnt = write (ofd, buf, cnt);
		486
		487	if (cnt <= 0)
		488	{
		489	if (cnt && !res) res = -1;
		490	break;
		491	}
		492
		493	offset += cnt;
		494	res += cnt;
		495	}
		496
		497	{
		498	int errorno = errno;
		499	free (buf);
		500	errno = errorno;
		501	}
		502	}
		503
		504	return res;
		505	}
		506
		507	/*****************************************************************************/
276		508
277	static void *	509	static void *
278	aio_proc (void *thr_arg)	510	aio_proc (void *thr_arg)
279	{	511	{
280	aio_req req;	512	aio_req req;
…		…
306		538
307	type = req->type;	539	type = req->type;
308		540
309	switch (type)	541	switch (type)
310	{	542	{
311	case REQ_READ: req->result = pread64 (req->fd, req->dataptr, req->length, req->offset); break;	543	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
312	case REQ_WRITE: req->result = pwrite64 (req->fd, req->dataptr, req->length, req->offset); break;	544	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
313	#if SYS_readahead	545
314	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	546	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
315	#else	547	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
316	case REQ_READAHEAD: req->result = -1; errno = ENOSYS; break;
317	#endif
318		548
319	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	549	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
320	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	550	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
321	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	551	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
322		552
323	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;	553	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
324	case REQ_CLOSE: req->result = close (req->fd); break;	554	case REQ_CLOSE: req->result = close (req->fd); break;
325	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	555	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
		556	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
		557	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
326		558
		559	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
327	case REQ_FSYNC: req->result = fsync (req->fd); break;	560	case REQ_FSYNC: req->result = fsync (req->fd); break;
328	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
329		561
330	case REQ_QUIT:	562	case REQ_QUIT:
331	break;	563	break;
332		564
333	default:	565	default:
…		…
359	while (type != REQ_QUIT);	591	while (type != REQ_QUIT);
360		592
361	return 0;	593	return 0;
362	}	594	}
363		595
		596	#define dREQ \
		597	aio_req req; \
		598	\
		599	if (SvOK (callback) && !SvROK (callback)) \
		600	croak ("clalback must be undef or of reference type"); \
		601	\
		602	Newz (0, req, 1, aio_cb); \
		603	if (!req) \
		604	croak ("out of memory during aio_req allocation"); \
		605	\
		606	req->callback = newSVsv (callback);
		607
364	MODULE = IO::AIO PACKAGE = IO::AIO	608	MODULE = IO::AIO PACKAGE = IO::AIO
365		609
		610	PROTOTYPES: ENABLE
		611
366	BOOT:	612	BOOT:
367	{	613	{
368	if (pipe (respipe))	614	create_pipe ();
369	croak ("unable to initialize result pipe");	615	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
370
371	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
372	croak ("cannot set result pipe to nonblocking mode");
373
374	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
375	croak ("cannot set result pipe to nonblocking mode");
376	}	616	}
377		617
378	void	618	void
379	min_parallel(nthreads)	619	min_parallel(nthreads)
380	int nthreads	620	int nthreads
381	PROTOTYPE: $	621	PROTOTYPE: $
382	CODE:
383	while (nthreads > started)
384	start_thread ();
385		622
386	void	623	void
387	max_parallel(nthreads)	624	max_parallel(nthreads)
388	int nthreads	625	int nthreads
389	PROTOTYPE: $	626	PROTOTYPE: $
390	CODE:
391	{
392	int cur = started;
393	while (cur > nthreads)
394	{
395	end_thread ();
396	cur--;
397	}
398
399	while (started > nthreads)
400	{
401	poll_wait ();
402	poll_cb ();
403	}
404	}
405		627
406	int	628	int
407	max_outstanding(nreqs)	629	max_outstanding(nreqs)
408	int nreqs	630	int nreqs
409	PROTOTYPE: $	631	PROTOTYPE: $
410	CODE:	632	CODE:
411	RETVAL = max_outstanding;	633	RETVAL = max_outstanding;
412	max_outstanding = nreqs;	634	max_outstanding = nreqs;
413		635
414	void	636	void
415	aio_open(pathname,flags,mode,callback)	637	aio_open(pathname,flags,mode,callback=&PL_sv_undef)
416	SV * pathname	638	SV * pathname
417	int flags	639	int flags
418	int mode	640	int mode
419	SV * callback	641	SV * callback
420	PROTOTYPE: $$$$	642	PROTOTYPE: $$$;$
421	CODE:	643	CODE:
422	{	644	{
423	aio_req req;	645	dREQ;
424
425	Newz (0, req, 1, aio_cb);
426
427	if (!req)
428	croak ("out of memory during aio_req allocation");
429		646
430	req->type = REQ_OPEN;	647	req->type = REQ_OPEN;
431	req->data = newSVsv (pathname);	648	req->data = newSVsv (pathname);
432	req->dataptr = SvPV_nolen (req->data);	649	req->dataptr = SvPVbyte_nolen (req->data);
433	req->fd = flags;	650	req->fd = flags;
434	req->mode = mode;	651	req->mode = mode;
435	req->callback = SvREFCNT_inc (callback);
436		652
437	send_req (req);	653	send_req (req);
438	}	654	}
439		655
440	void	656	void
441	aio_close(fh,callback)	657	aio_close(fh,callback=&PL_sv_undef)
442	InputStream fh	658	SV * fh
443	SV * callback	659	SV * callback
444	PROTOTYPE: $$	660	PROTOTYPE: $;$
445	ALIAS:	661	ALIAS:
446	aio_close = REQ_CLOSE	662	aio_close = REQ_CLOSE
447	aio_fsync = REQ_FSYNC	663	aio_fsync = REQ_FSYNC
448	aio_fdatasync = REQ_FDATASYNC	664	aio_fdatasync = REQ_FDATASYNC
449	CODE:	665	CODE:
450	{	666	{
		667	dREQ;
		668
		669	req->type = ix;
		670	req->fh = newSVsv (fh);
		671	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
		672
		673	send_req (req);
		674	}
		675
		676	void
		677	aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
		678	SV * fh
		679	UV offset
		680	UV length
		681	SV * data
		682	UV dataoffset
		683	SV * callback
		684	ALIAS:
		685	aio_read = REQ_READ
		686	aio_write = REQ_WRITE
		687	PROTOTYPE: $$$$$;$
		688	CODE:
		689	{
451	aio_req req;	690	aio_req req;
		691	STRLEN svlen;
		692	char *svptr = SvPVbyte (data, svlen);
452		693
453	Newz (0, req, 1, aio_cb);	694	SvUPGRADE (data, SVt_PV);
		695	SvPOK_on (data);
454		696
455	if (!req)	697	if (dataoffset < 0)
456	croak ("out of memory during aio_req allocation");	698	dataoffset += svlen;
457		699
458	req->type = ix;	700	if (dataoffset < 0 \|\| dataoffset > svlen)
459	req->fd = PerlIO_fileno (fh);	701	croak ("data offset outside of string");
460	req->callback = SvREFCNT_inc (callback);
461		702
462	send_req (req);	703	if (ix == REQ_WRITE)
463	}	704	{
464		705	/* write: check length and adjust. */
465	void	706	if (length < 0 \|\| length + dataoffset > svlen)
466	aio_read(fh,offset,length,data,dataoffset,callback)	707	length = svlen - dataoffset;
467	InputStream fh	708	}
468	UV offset	709	else
469	IV length	710	{
470	SV * data	711	/* read: grow scalar as necessary */
471	IV dataoffset	712	svptr = SvGROW (data, length + dataoffset);
472	SV * callback	713	}
473	PROTOTYPE: $$$$$$
474	CODE:
475	read_write (0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
476
477	void
478	aio_write(fh,offset,length,data,dataoffset,callback)
479	OutputStream fh
480	UV offset
481	IV length
482	SV * data
483	IV dataoffset
484	SV * callback
485	PROTOTYPE: $$$$$$
486	CODE:
487	read_write (1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
488
489	void
490	aio_readahead(fh,offset,length,callback)
491	InputStream fh
492	UV offset
493	IV length
494	SV * callback
495	PROTOTYPE: $$$$
496	CODE:
497	{
498	aio_req req;
499		714
500	if (length < 0)	715	if (length < 0)
501	croak ("length must not be negative");	716	croak ("length must not be negative");
502		717
503	Newz (0, req, 1, aio_cb);	718	{
		719	dREQ;
504		720
505	if (!req)	721	req->type = ix;
506	croak ("out of memory during aio_req allocation");	722	req->fh = newSVsv (fh);
		723	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
		724	: IoOFP (sv_2io (fh)));
		725	req->offset = offset;
		726	req->length = length;
		727	req->data = SvREFCNT_inc (data);
		728	req->dataptr = (char *)svptr + dataoffset;
		729
		730	if (!SvREADONLY (data))
		731	{
		732	SvREADONLY_on (data);
		733	req->data2ptr = (void *)data;
		734	}
		735
		736	send_req (req);
		737	}
		738	}
		739
		740	void
		741	aio_sendfile(out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)
		742	SV * out_fh
		743	SV * in_fh
		744	UV in_offset
		745	UV length
		746	SV * callback
		747	PROTOTYPE: $$$$;$
		748	CODE:
		749	{
		750	dREQ;
		751
		752	req->type = REQ_SENDFILE;
		753	req->fh = newSVsv (out_fh);
		754	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
		755	req->fh2 = newSVsv (in_fh);
		756	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
		757	req->offset = in_offset;
		758	req->length = length;
		759
		760	send_req (req);
		761	}
		762
		763	void
		764	aio_readahead(fh,offset,length,callback=&PL_sv_undef)
		765	SV * fh
		766	UV offset
		767	IV length
		768	SV * callback
		769	PROTOTYPE: $$$;$
		770	CODE:
		771	{
		772	dREQ;
507		773
508	req->type = REQ_READAHEAD;	774	req->type = REQ_READAHEAD;
		775	req->fh = newSVsv (fh);
509	req->fd = PerlIO_fileno (fh);	776	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
510	req->offset = offset;	777	req->offset = offset;
511	req->length = length;	778	req->length = length;
512	req->callback = SvREFCNT_inc (callback);
513		779
514	send_req (req);	780	send_req (req);
515	}	781	}
516		782
517	void	783	void
518	aio_stat(fh_or_path,callback)	784	aio_stat(fh_or_path,callback=&PL_sv_undef)
519	SV * fh_or_path	785	SV * fh_or_path
520	SV * callback	786	SV * callback
521	PROTOTYPE: $$
522	ALIAS:	787	ALIAS:
		788	aio_stat = REQ_STAT
523	aio_lstat = 1	789	aio_lstat = REQ_LSTAT
524	CODE:	790	CODE:
525	{	791	{
526	aio_req req;	792	dREQ;
527
528	Newz (0, req, 1, aio_cb);
529
530	if (!req)
531	croak ("out of memory during aio_req allocation");
532		793
533	New (0, req->statdata, 1, Stat_t);	794	New (0, req->statdata, 1, Stat_t);
534
535	if (!req->statdata)	795	if (!req->statdata)
		796	{
		797	free_req (req);
536	croak ("out of memory during aio_req->statdata allocation");	798	croak ("out of memory during aio_req->statdata allocation");
		799	}
537		800
538	if (SvPOK (fh_or_path))	801	if (SvPOK (fh_or_path))
539	{	802	{
540	req->type = ix ? REQ_LSTAT : REQ_STAT;	803	req->type = ix;
541	req->data = newSVsv (fh_or_path);	804	req->data = newSVsv (fh_or_path);
542	req->dataptr = SvPV_nolen (req->data);	805	req->dataptr = SvPVbyte_nolen (req->data);
543	}	806	}
544	else	807	else
545	{	808	{
546	req->type = REQ_FSTAT;	809	req->type = REQ_FSTAT;
		810	req->fh = newSVsv (fh_or_path);
547	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	811	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
548	}	812	}
549		813
550	req->callback = SvREFCNT_inc (callback);
551
552	send_req (req);	814	send_req (req);
553	}	815	}
554		816
555	void	817	void
556	aio_unlink(pathname,callback)	818	aio_unlink(pathname,callback=&PL_sv_undef)
557	SV * pathname	819	SV * pathname
558	SV * callback	820	SV * callback
559	PROTOTYPE: $$	821	ALIAS:
		822	aio_unlink = REQ_UNLINK
		823	aio_rmdir = REQ_RMDIR
560	CODE:	824	CODE:
561	{	825	{
562	aio_req req;	826	dREQ;
563		827
564	Newz (0, req, 1, aio_cb);	828	req->type = ix;
		829	req->data = newSVsv (pathname);
		830	req->dataptr = SvPVbyte_nolen (req->data);
565		831
566	if (!req)	832	send_req (req);
567	croak ("out of memory during aio_req allocation");	833	}
		834
		835	void
		836	aio_symlink(oldpath,newpath,callback=&PL_sv_undef)
		837	SV * oldpath
		838	SV * newpath
		839	SV * callback
		840	CODE:
		841	{
		842	dREQ;
568		843
569	req->type = REQ_UNLINK;	844	req->type = REQ_SYMLINK;
		845	req->fh = newSVsv (oldpath);
		846	req->data2ptr = SvPVbyte_nolen (req->fh);
570	req->data = newSVsv (pathname);	847	req->data = newSVsv (newpath);
571	req->dataptr = SvPV_nolen (req->data);	848	req->dataptr = SvPVbyte_nolen (req->data);
572	req->callback = SvREFCNT_inc (callback);
573		849
574	send_req (req);	850	send_req (req);
575	}	851	}
576		852
577	void	853	void
…		…
582	{	858	{
583	poll_wait ();	859	poll_wait ();
584	poll_cb ();	860	poll_cb ();
585	}	861	}
586		862
		863	void
		864	poll()
		865	PROTOTYPE:
		866	CODE:
		867	if (nreqs)
		868	{
		869	poll_wait ();
		870	poll_cb ();
		871	}
		872
587	int	873	int
588	poll_fileno()	874	poll_fileno()
589	PROTOTYPE:	875	PROTOTYPE:
590	CODE:	876	CODE:
591	RETVAL = respipe [0];	877	RETVAL = respipe [0];

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Comparing IO-AIO/AIO.xs (file contents): Revision 1.6 by root, Mon Jul 11 01:03:17 2005 UTC vs. Revision 1.33 by root, Mon Aug 22 23:21:57 2005 UTC

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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.6 by root, Mon Jul 11 01:03:17 2005 UTC vs.
Revision 1.33 by root, Mon Aug 22 23:21:57 2005 UTC