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

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.9 by root, Tue Jul 12 11:02:54 2005 UTC vs.
Revision 1.32 by root, Mon Aug 22 23:20:37 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		19
12	#include <pthread.h>	20	#if HAVE_SENDFILE
		21	# if __linux
		22	# include <sys/sendfile.h>
		23	# elif __freebsd
13	#include <sys/syscall.h>	24	# include <sys/socket.h>
14		25	# include <sys/uio.h>
15	typedef void InputStream; / hack, but 5.6.1 is simply toooo old ;) */	26	# elif __hpux
16	typedef void OutputStream; / hack, but 5.6.1 is simply toooo old ;) */	27	# include <sys/socket.h>
17	typedef void InOutStream; / hack, but 5.6.1 is simply toooo old ;) */	28	# endif
		29	#endif
18		30
19	#if __ia64	31	#if __ia64
20	# define STACKSIZE 65536	32	# define STACKSIZE 65536
21	#else	33	#else
22	# define STACKSIZE 4096	34	# define STACKSIZE 4096
24		36
25	enum {	37	enum {
26	REQ_QUIT,	38	REQ_QUIT,
27	REQ_OPEN, REQ_CLOSE,	39	REQ_OPEN, REQ_CLOSE,
28	REQ_READ, REQ_WRITE, REQ_READAHEAD,	40	REQ_READ, REQ_WRITE, REQ_READAHEAD,
		41	REQ_SENDFILE,
29	REQ_STAT, REQ_LSTAT, REQ_FSTAT, REQ_UNLINK,	42	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
30	REQ_FSYNC, REQ_FDATASYNC,	43	REQ_FSYNC, REQ_FDATASYNC,
		44	REQ_UNLINK, REQ_RMDIR,
		45	REQ_SYMLINK,
31	};	46	};
32		47
33	typedef struct aio_cb {	48	typedef struct aio_cb {
34	struct aio_cb *volatile next;	49	struct aio_cb *volatile next;
35		50
36	int type;	51	int type;
37		52
38	int fd;	53	int fd, fd2;
39	off_t offset;	54	off_t offset;
40	size_t length;	55	size_t length;
41	ssize_t result;	56	ssize_t result;
42	mode_t mode; /* open */	57	mode_t mode; /* open */
43	int errorno;	58	int errorno;
44	SV data, callback;	59	SV data, callback;
45	void *dataptr;	60	SV fh, fh2;
		61	void dataptr, data2ptr;
46	STRLEN dataoffset;	62	STRLEN dataoffset;
47		63
48	Stat_t *statdata;	64	Stat_t *statdata;
49	} aio_cb;	65	} aio_cb;
50		66
51	typedef aio_cb *aio_req;	67	typedef aio_cb *aio_req;
52		68
53	static int started;	69	static int started, wanted;
54	static int nreqs;	70	static volatile int nreqs;
55	static int max_outstanding = 1<<30;	71	static int max_outstanding = 1<<30;
56	static int respipe [2];	72	static int respipe [2];
57		73
58	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	74	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;
59	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;	75	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
60	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	76	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
61		77
62	static volatile aio_req reqs, reqe; /* queue start, queue end */	78	static volatile aio_req reqs, reqe; /* queue start, queue end */
63	static volatile aio_req ress, rese; /* queue start, queue end */	79	static volatile aio_req ress, rese; /* queue start, queue end */
64		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
65	static void	101	static void
66	poll_wait ()	102	poll_wait ()
67	{	103	{
68	if (!nreqs)	104	if (nreqs && !ress)
69	return;	105	{
70
71	fd_set rfd;	106	fd_set rfd;
72	FD_ZERO(&rfd);	107	FD_ZERO(&rfd);
73	FD_SET(respipe [0], &rfd);	108	FD_SET(respipe [0], &rfd);
74		109
75	select (respipe [0] + 1, &rfd, 0, 0, 0);	110	select (respipe [0] + 1, &rfd, 0, 0, 0);
		111	}
76	}	112	}
77		113
78	static int	114	static int
79	poll_cb ()	115	poll_cb ()
80	{	116	{
81	dSP;	117	dSP;
82	int count = 0;	118	int count = 0;
		119	int do_croak = 0;
83	aio_req req;	120	aio_req req;
84
85	{
86	/* read and signals sent by the worker threads */
87	char buf [32];
88	while (read (respipe [0], buf, 32) > 0)
89	;
90	}
91		121
92	for (;;)	122	for (;;)
93	{	123	{
94	pthread_mutex_lock (&reslock);	124	pthread_mutex_lock (&reslock);
95
96	req = ress;	125	req = ress;
97		126
98	if (ress)	127	if (req)
99	{	128	{
100	ress = ress->next;	129	ress = req->next;
		130
101	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	}
102	}	140	}
103		141
104	pthread_mutex_unlock (&reslock);	142	pthread_mutex_unlock (&reslock);
105		143
106	if (!req)	144	if (!req)
…		…
114	{	152	{
115	int errorno = errno;	153	int errorno = errno;
116	errno = req->errorno;	154	errno = req->errorno;
117		155
118	if (req->type == REQ_READ)	156	if (req->type == REQ_READ)
119	SvCUR_set (req->data, req->dataoffset	157	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
120	+ req->result > 0 ? req->result : 0);
121		158
		159	if (req->data2ptr && (req->type == REQ_READ \|\| req->type == REQ_WRITE))
		160	SvREADONLY_off (req->data);
		161
122	if (req->data)	162	if (req->statdata)
123	SvREFCNT_dec (req->data);
124
125	if (req->type == REQ_STAT \|\| req->type == REQ_LSTAT \|\| req->type == REQ_FSTAT)
126	{	163	{
127	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	164	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
128	PL_laststatval = req->result;	165	PL_laststatval = req->result;
129	PL_statcache = *(req->statdata);	166	PL_statcache = *(req->statdata);
130
131	Safefree (req->statdata);
132	}	167	}
133		168
		169	ENTER;
134	PUSHMARK (SP);	170	PUSHMARK (SP);
135	XPUSHs (sv_2mortal (newSViv (req->result)));	171	XPUSHs (sv_2mortal (newSViv (req->result)));
136		172
137	if (req->type == REQ_OPEN)	173	if (req->type == REQ_OPEN)
138	{	174	{
…		…
141		177
142	PUTBACK;	178	PUTBACK;
143	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);	179	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);
144	SPAGAIN;	180	SPAGAIN;
145		181
146	fh = POPs;	182	fh = SvREFCNT_inc (POPs);
147		183
148	PUSHMARK (SP);	184	PUSHMARK (SP);
149	XPUSHs (fh);	185	XPUSHs (sv_2mortal (fh));
150	}	186	}
151		187
152	if (SvOK (req->callback))	188	if (SvOK (req->callback))
153	{	189	{
154	PUTBACK;	190	PUTBACK;
155	call_sv (req->callback, G_VOID \| G_EVAL);	191	call_sv (req->callback, G_VOID \| G_EVAL);
156	SPAGAIN;	192	SPAGAIN;
		193
		194	if (SvTRUE (ERRSV))
		195	{
		196	free_req (req);
		197	croak (0);
		198	}
157	}	199	}
		200
158		201	LEAVE;
159	if (req->callback)
160	SvREFCNT_dec (req->callback);
161		202
162	errno = errorno;	203	errno = errorno;
163	count++;	204	count++;
164	}	205	}
165		206
166	Safefree (req);	207	free_req (req);
167	}	208	}
168		209
169	return count;	210	return count;
170	}	211	}
171		212
…		…
192	}	233	}
193		234
194	static void	235	static void
195	send_req (aio_req req)	236	send_req (aio_req req)
196	{	237	{
		238	while (started < wanted && nreqs >= started)
		239	start_thread ();
		240
197	nreqs++;	241	nreqs++;
198		242
199	pthread_mutex_lock (&reqlock);	243	pthread_mutex_lock (&reqlock);
200		244
201	req->next = 0;	245	req->next = 0;
…		…
209	reqe = reqs = req;	253	reqe = reqs = req;
210		254
211	pthread_cond_signal (&reqwait);	255	pthread_cond_signal (&reqwait);
212	pthread_mutex_unlock (&reqlock);	256	pthread_mutex_unlock (&reqlock);
213		257
214	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)
215	{	300	{
216	poll_wait ();	301	poll_wait ();
217	poll_cb ();	302	poll_cb ();
218	}	303	}
219	}	304	}
220		305
221	static void	306	static void create_pipe ()
222	end_thread (void)
223	{	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	{
224	aio_req req;	332	aio_req prv;
225	New (0, req, 1, aio_cb);
226	req->type = REQ_QUIT;
227		333
228	send_req (req);	334	started = 0;
229	}
230		335
231	static void	336	while (reqs)
232	read_write (int dowrite, int fd, off_t offset, size_t length,
233	SV data, STRLEN dataoffset, SV callback)
234	{
235	aio_req req;
236	STRLEN svlen;
237	char *svptr = SvPV (data, svlen);
238
239	SvUPGRADE (data, SVt_PV);
240	SvPOK_on (data);
241
242	if (dataoffset < 0)
243	dataoffset += svlen;
244
245	if (dataoffset < 0 \|\| dataoffset > svlen)
246	croak ("data offset outside of string");
247
248	if (dowrite)
249	{	337	{
250	/* write: check length and adjust. */	338	prv = reqs;
251	if (length < 0 \|\| length + dataoffset > svlen)	339	reqs = prv->next;
252	length = svlen - dataoffset;	340	free_req (prv);
253	}	341	}
254	else	342
		343	reqs = reqe = 0;
		344
		345	while (ress)
255	{	346	{
256	/* read: grow scalar as necessary */	347	prv = ress;
257	svptr = SvGROW (data, length + dataoffset);	348	ress = prv->next;
		349	free_req (prv);
258	}	350	}
		351
		352	ress = rese = 0;
259		353
260	if (length < 0)	354	close (respipe [0]);
261	croak ("length must not be negative");	355	close (respipe [1]);
		356	create_pipe ();
262		357
263	Newz (0, req, 1, aio_cb);	358	atfork_parent ();
264
265	if (!req)
266	croak ("out of memory during aio_req allocation");
267
268	req->type = dowrite ? REQ_WRITE : REQ_READ;
269	req->fd = fd;
270	req->offset = offset;
271	req->length = length;
272	req->data = SvREFCNT_inc (data);
273	req->dataptr = (char *)svptr + dataoffset;
274	req->callback = SvREFCNT_inc (callback);
275
276	send_req (req);
277	}	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	res = sbytes;
		456	}
		457
		458	#elif __hpux
		459	res = sendfile (ofd, ifd, offset, count, 0, 0);
		460
		461	#else
		462	res = -1;
		463	errno = ENOSYS;
		464	#endif
		465
		466	if (res < 0 && (errno == ENOSYS \|\| errno == EINVAL \|\| errno == ENOTSOCK))
		467	{
		468	/* emulate sendfile. this is a major pain in the ass */
		469	char *buf = malloc (4096);
		470	res = 0;
		471
		472	for (;;)
		473	{
		474	ssize_t cnt;
		475
		476	cnt = pread (ifd, buf, 4096, offset);
		477
		478	if (cnt <= 0)
		479	{
		480	if (cnt && !res) res = -1;
		481	break;
		482	}
		483
		484	cnt = write (ofd, buf, cnt);
		485
		486	if (cnt <= 0)
		487	{
		488	if (cnt && !res) res = -1;
		489	break;
		490	}
		491
		492	offset += cnt;
		493	res += cnt;
		494	}
		495
		496	{
		497	int errorno = errno;
		498	free (buf);
		499	errno = errorno;
		500	}
		501	}
		502
		503	return res;
		504	}
		505
		506	/*****************************************************************************/
278		507
279	static void *	508	static void *
280	aio_proc (void *thr_arg)	509	aio_proc (void *thr_arg)
281	{	510	{
282	aio_req req;	511	aio_req req;
…		…
308		537
309	type = req->type;	538	type = req->type;
310		539
311	switch (type)	540	switch (type)
312	{	541	{
313	case REQ_READ: req->result = pread64 (req->fd, req->dataptr, req->length, req->offset); break;	542	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
314	case REQ_WRITE: req->result = pwrite64 (req->fd, req->dataptr, req->length, req->offset); break;	543	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
315	#if SYS_readahead	544
316	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	545	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
317	#else	546	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
318	case REQ_READAHEAD: req->result = -1; errno = ENOSYS; break;
319	#endif
320		547
321	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	548	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
322	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	549	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
323	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	550	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
324		551
325	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;	552	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
326	case REQ_CLOSE: req->result = close (req->fd); break;	553	case REQ_CLOSE: req->result = close (req->fd); break;
327	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	554	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
		555	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
		556	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
328		557
		558	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
329	case REQ_FSYNC: req->result = fsync (req->fd); break;	559	case REQ_FSYNC: req->result = fsync (req->fd); break;
330	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
331		560
332	case REQ_QUIT:	561	case REQ_QUIT:
333	break;	562	break;
334		563
335	default:	564	default:
…		…
361	while (type != REQ_QUIT);	590	while (type != REQ_QUIT);
362		591
363	return 0;	592	return 0;
364	}	593	}
365		594
		595	#define dREQ \
		596	aio_req req; \
		597	\
		598	if (SvOK (callback) && !SvROK (callback)) \
		599	croak ("clalback must be undef or of reference type"); \
		600	\
		601	Newz (0, req, 1, aio_cb); \
		602	if (!req) \
		603	croak ("out of memory during aio_req allocation"); \
		604	\
		605	req->callback = newSVsv (callback);
		606
366	MODULE = IO::AIO PACKAGE = IO::AIO	607	MODULE = IO::AIO PACKAGE = IO::AIO
367		608
368	PROTOTYPES: ENABLE	609	PROTOTYPES: ENABLE
369		610
370	BOOT:	611	BOOT:
371	{	612	{
372	if (pipe (respipe))	613	create_pipe ();
373	croak ("unable to initialize result pipe");	614	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
374
375	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
376	croak ("cannot set result pipe to nonblocking mode");
377
378	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
379	croak ("cannot set result pipe to nonblocking mode");
380	}	615	}
381		616
382	void	617	void
383	min_parallel(nthreads)	618	min_parallel(nthreads)
384	int nthreads	619	int nthreads
385	PROTOTYPE: $	620	PROTOTYPE: $
386	CODE:
387	while (nthreads > started)
388	start_thread ();
389		621
390	void	622	void
391	max_parallel(nthreads)	623	max_parallel(nthreads)
392	int nthreads	624	int nthreads
393	PROTOTYPE: $	625	PROTOTYPE: $
394	CODE:
395	{
396	int cur = started;
397	while (cur > nthreads)
398	{
399	end_thread ();
400	cur--;
401	}
402
403	while (started > nthreads)
404	{
405	poll_wait ();
406	poll_cb ();
407	}
408	}
409		626
410	int	627	int
411	max_outstanding(nreqs)	628	max_outstanding(nreqs)
412	int nreqs	629	int nreqs
413	PROTOTYPE: $	630	PROTOTYPE: $
…		…
422	int mode	639	int mode
423	SV * callback	640	SV * callback
424	PROTOTYPE: $$$;$	641	PROTOTYPE: $$$;$
425	CODE:	642	CODE:
426	{	643	{
427	aio_req req;	644	dREQ;
428
429	Newz (0, req, 1, aio_cb);
430
431	if (!req)
432	croak ("out of memory during aio_req allocation");
433		645
434	req->type = REQ_OPEN;	646	req->type = REQ_OPEN;
435	req->data = newSVsv (pathname);	647	req->data = newSVsv (pathname);
436	req->dataptr = SvPV_nolen (req->data);	648	req->dataptr = SvPVbyte_nolen (req->data);
437	req->fd = flags;	649	req->fd = flags;
438	req->mode = mode;	650	req->mode = mode;
439	req->callback = SvREFCNT_inc (callback);
440		651
441	send_req (req);	652	send_req (req);
442	}	653	}
443		654
444	void	655	void
445	aio_close(fh,callback=&PL_sv_undef)	656	aio_close(fh,callback=&PL_sv_undef)
446	InputStream fh	657	SV * fh
447	SV * callback	658	SV * callback
448	PROTOTYPE: $;$	659	PROTOTYPE: $;$
449	ALIAS:	660	ALIAS:
450	aio_close = REQ_CLOSE	661	aio_close = REQ_CLOSE
451	aio_fsync = REQ_FSYNC	662	aio_fsync = REQ_FSYNC
452	aio_fdatasync = REQ_FDATASYNC	663	aio_fdatasync = REQ_FDATASYNC
453	CODE:	664	CODE:
454	{	665	{
455	aio_req req;	666	dREQ;
456
457	Newz (0, req, 1, aio_cb);
458
459	if (!req)
460	croak ("out of memory during aio_req allocation");
461		667
462	req->type = ix;	668	req->type = ix;
		669	req->fh = newSVsv (fh);
463	req->fd = PerlIO_fileno (fh);	670	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
464	req->callback = SvREFCNT_inc (callback);
465		671
466	send_req (req);	672	send_req (req);
467	}	673	}
468		674
469	void	675	void
470	aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	676	aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
471	InputStream fh	677	SV * fh
472	UV offset	678	UV offset
473	IV length	679	UV length
474	SV * data	680	SV * data
475	IV dataoffset	681	UV dataoffset
476	SV * callback	682	SV * callback
		683	ALIAS:
		684	aio_read = REQ_READ
		685	aio_write = REQ_WRITE
477	PROTOTYPE: $$$$$;$	686	PROTOTYPE: $$$$$;$
478	CODE:	687	CODE:
479	read_write (0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);	688	{
		689	aio_req req;
		690	STRLEN svlen;
		691	char *svptr = SvPVbyte (data, svlen);
480		692
		693	SvUPGRADE (data, SVt_PV);
		694	SvPOK_on (data);
		695
		696	if (dataoffset < 0)
		697	dataoffset += svlen;
		698
		699	if (dataoffset < 0 \|\| dataoffset > svlen)
		700	croak ("data offset outside of string");
		701
		702	if (ix == REQ_WRITE)
		703	{
		704	/* write: check length and adjust. */
		705	if (length < 0 \|\| length + dataoffset > svlen)
		706	length = svlen - dataoffset;
		707	}
		708	else
		709	{
		710	/* read: grow scalar as necessary */
		711	svptr = SvGROW (data, length + dataoffset);
		712	}
		713
		714	if (length < 0)
		715	croak ("length must not be negative");
		716
		717	{
		718	dREQ;
		719
		720	req->type = ix;
		721	req->fh = newSVsv (fh);
		722	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
		723	: IoOFP (sv_2io (fh)));
		724	req->offset = offset;
		725	req->length = length;
		726	req->data = SvREFCNT_inc (data);
		727	req->dataptr = (char *)svptr + dataoffset;
		728
		729	if (!SvREADONLY (data))
		730	{
		731	SvREADONLY_on (data);
		732	req->data2ptr = (void *)data;
		733	}
		734
		735	send_req (req);
		736	}
		737	}
		738
481	void	739	void
482	aio_write(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	740	aio_sendfile(out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)
483	OutputStream fh	741	SV * out_fh
		742	SV * in_fh
484	UV offset	743	UV in_offset
485	IV length	744	UV length
486	SV * data
487	IV dataoffset
488	SV * callback	745	SV * callback
489	PROTOTYPE: $$$$$;$	746	PROTOTYPE: $$$$;$
490	CODE:	747	CODE:
491	read_write (1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);	748	{
		749	dREQ;
		750
		751	req->type = REQ_SENDFILE;
		752	req->fh = newSVsv (out_fh);
		753	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
		754	req->fh2 = newSVsv (in_fh);
		755	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
		756	req->offset = in_offset;
		757	req->length = length;
		758
		759	send_req (req);
		760	}
492		761
493	void	762	void
494	aio_readahead(fh,offset,length,callback=&PL_sv_undef)	763	aio_readahead(fh,offset,length,callback=&PL_sv_undef)
495	InputStream fh	764	SV * fh
496	UV offset	765	UV offset
497	IV length	766	IV length
498	SV * callback	767	SV * callback
499	PROTOTYPE: $$$;$	768	PROTOTYPE: $$$;$
500	CODE:	769	CODE:
501	{	770	{
502	aio_req req;	771	dREQ;
503
504	if (length < 0)
505	croak ("length must not be negative");
506
507	Newz (0, req, 1, aio_cb);
508
509	if (!req)
510	croak ("out of memory during aio_req allocation");
511		772
512	req->type = REQ_READAHEAD;	773	req->type = REQ_READAHEAD;
		774	req->fh = newSVsv (fh);
513	req->fd = PerlIO_fileno (fh);	775	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
514	req->offset = offset;	776	req->offset = offset;
515	req->length = length;	777	req->length = length;
516	req->callback = SvREFCNT_inc (callback);
517		778
518	send_req (req);	779	send_req (req);
519	}	780	}
520		781
521	void	782	void
…		…
525	ALIAS:	786	ALIAS:
526	aio_stat = REQ_STAT	787	aio_stat = REQ_STAT
527	aio_lstat = REQ_LSTAT	788	aio_lstat = REQ_LSTAT
528	CODE:	789	CODE:
529	{	790	{
530	aio_req req;	791	dREQ;
531
532	Newz (0, req, 1, aio_cb);
533
534	if (!req)
535	croak ("out of memory during aio_req allocation");
536		792
537	New (0, req->statdata, 1, Stat_t);	793	New (0, req->statdata, 1, Stat_t);
538
539	if (!req->statdata)	794	if (!req->statdata)
		795	{
		796	free_req (req);
540	croak ("out of memory during aio_req->statdata allocation");	797	croak ("out of memory during aio_req->statdata allocation");
		798	}
541		799
542	if (SvPOK (fh_or_path))	800	if (SvPOK (fh_or_path))
543	{	801	{
544	req->type = ix;	802	req->type = ix;
545	req->data = newSVsv (fh_or_path);	803	req->data = newSVsv (fh_or_path);
546	req->dataptr = SvPV_nolen (req->data);	804	req->dataptr = SvPVbyte_nolen (req->data);
547	}	805	}
548	else	806	else
549	{	807	{
550	req->type = REQ_FSTAT;	808	req->type = REQ_FSTAT;
		809	req->fh = newSVsv (fh_or_path);
551	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	810	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
552	}	811	}
553
554	req->callback = SvREFCNT_inc (callback);
555		812
556	send_req (req);	813	send_req (req);
557	}	814	}
558		815
559	void	816	void
560	aio_unlink(pathname,callback=&PL_sv_undef)	817	aio_unlink(pathname,callback=&PL_sv_undef)
561	SV * pathname	818	SV * pathname
562	SV * callback	819	SV * callback
		820	ALIAS:
		821	aio_unlink = REQ_UNLINK
		822	aio_rmdir = REQ_RMDIR
563	CODE:	823	CODE:
564	{	824	{
565	aio_req req;	825	dREQ;
566		826
567	Newz (0, req, 1, aio_cb);	827	req->type = ix;
		828	req->data = newSVsv (pathname);
		829	req->dataptr = SvPVbyte_nolen (req->data);
568		830
569	if (!req)	831	send_req (req);
570	croak ("out of memory during aio_req allocation");	832	}
		833
		834	void
		835	aio_symlink(oldpath,newpath,callback=&PL_sv_undef)
		836	SV * oldpath
		837	SV * newpath
		838	SV * callback
		839	CODE:
		840	{
		841	dREQ;
571		842
572	req->type = REQ_UNLINK;	843	req->type = REQ_SYMLINK;
		844	req->fh = newSVsv (oldpath);
		845	req->data2ptr = SvPVbyte_nolen (req->fh);
573	req->data = newSVsv (pathname);	846	req->data = newSVsv (newpath);
574	req->dataptr = SvPV_nolen (req->data);	847	req->dataptr = SvPVbyte_nolen (req->data);
575	req->callback = SvREFCNT_inc (callback);
576		848
577	send_req (req);	849	send_req (req);
578	}	850	}
579		851
580	void	852	void

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Comparing IO-AIO/AIO.xs (file contents): Revision 1.9 by root, Tue Jul 12 11:02:54 2005 UTC vs. Revision 1.32 by root, Mon Aug 22 23:20:37 2005 UTC

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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.9 by root, Tue Jul 12 11:02:54 2005 UTC vs.
Revision 1.32 by root, Mon Aug 22 23:20:37 2005 UTC