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

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.7 by root, Mon Jul 11 01:49:14 2005 UTC vs.
Revision 1.27 by root, Wed Aug 17 04:47:02 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
5	#include <sys/types.h>	10	#include <sys/types.h>
6	#include <sys/stat.h>	11	#include <sys/stat.h>
		12
7	#include <unistd.h>	13	#include <unistd.h>
8	#include <fcntl.h>	14	#include <fcntl.h>
9	#include <signal.h>	15	#include <signal.h>
10	#include <sched.h>	16	#include <sched.h>
11	#include <endian.h>
12		17
13	#include <pthread.h>	18	#include <pthread.h>
14	#include <sys/syscall.h>
15		19
16	typedef void InputStream; / hack, but 5.6.1 is simply toooo old ;) */	20	typedef void InputStream; / hack, but 5.6.1 is simply toooo old ;) */
17	typedef void OutputStream; / hack, but 5.6.1 is simply toooo old ;) */	21	typedef void OutputStream; / hack, but 5.6.1 is simply toooo old ;) */
18	typedef void InOutStream; / hack, but 5.6.1 is simply toooo old ;) */	22	typedef void InOutStream; / hack, but 5.6.1 is simply toooo old ;) */
19		23
25		29
26	enum {	30	enum {
27	REQ_QUIT,	31	REQ_QUIT,
28	REQ_OPEN, REQ_CLOSE,	32	REQ_OPEN, REQ_CLOSE,
29	REQ_READ, REQ_WRITE, REQ_READAHEAD,	33	REQ_READ, REQ_WRITE, REQ_READAHEAD,
30	REQ_STAT, REQ_LSTAT, REQ_FSTAT, REQ_UNLINK,	34	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
31	REQ_FSYNC, REQ_FDATASYNC,	35	REQ_FSYNC, REQ_FDATASYNC,
		36	REQ_UNLINK, REQ_RMDIR,
		37	REQ_SYMLINK,
32	};	38	};
33		39
34	typedef struct aio_cb {	40	typedef struct aio_cb {
35	struct aio_cb *volatile next;	41	struct aio_cb *volatile next;
36		42
…		…
40	off_t offset;	46	off_t offset;
41	size_t length;	47	size_t length;
42	ssize_t result;	48	ssize_t result;
43	mode_t mode; /* open */	49	mode_t mode; /* open */
44	int errorno;	50	int errorno;
45	SV data, callback;	51	SV data, callback, *fh;
46	void *dataptr;	52	void dataptr, data2ptr;
47	STRLEN dataoffset;	53	STRLEN dataoffset;
48		54
49	Stat_t *statdata;	55	Stat_t *statdata;
50	} aio_cb;	56	} aio_cb;
51		57
52	typedef aio_cb *aio_req;	58	typedef aio_cb *aio_req;
53		59
54	static int started;	60	static int started;
55	static int nreqs;	61	static volatile int nreqs;
56	static int max_outstanding = 1<<30;	62	static int max_outstanding = 1<<30;
57	static int respipe [2];	63	static int respipe [2];
58		64
59	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	65	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;
60	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;	66	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
61	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	67	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
62		68
63	static volatile aio_req reqs, reqe; /* queue start, queue end */	69	static volatile aio_req reqs, reqe; /* queue start, queue end */
64	static volatile aio_req ress, rese; /* queue start, queue end */	70	static volatile aio_req ress, rese; /* queue start, queue end */
65		71
		72	static void free_req (aio_req req)
		73	{
		74	if (req->data)
		75	SvREFCNT_dec (req->data);
		76
		77	if (req->fh)
		78	SvREFCNT_dec (req->fh);
		79
		80	if (req->statdata)
		81	Safefree (req->statdata);
		82
		83	if (req->callback)
		84	SvREFCNT_dec (req->callback);
		85
		86	Safefree (req);
		87	}
		88
66	static void	89	static void
67	poll_wait ()	90	poll_wait ()
68	{	91	{
69	if (!nreqs)	92	if (nreqs && !ress)
70	return;	93	{
71
72	fd_set rfd;	94	fd_set rfd;
73	FD_ZERO(&rfd);	95	FD_ZERO(&rfd);
74	FD_SET(respipe [0], &rfd);	96	FD_SET(respipe [0], &rfd);
75		97
76	select (respipe [0] + 1, &rfd, 0, 0, 0);	98	select (respipe [0] + 1, &rfd, 0, 0, 0);
		99	}
77	}	100	}
78		101
79	static int	102	static int
80	poll_cb ()	103	poll_cb ()
81	{	104	{
82	dSP;	105	dSP;
83	int count = 0;	106	int count = 0;
		107	int do_croak = 0;
84	aio_req req;	108	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		109
93	for (;;)	110	for (;;)
94	{	111	{
95	pthread_mutex_lock (&reslock);	112	pthread_mutex_lock (&reslock);
96
97	req = ress;	113	req = ress;
98		114
99	if (ress)	115	if (req)
100	{	116	{
101	ress = ress->next;	117	ress = req->next;
		118
102	if (!ress) rese = 0;	119	if (!ress)
		120	{
		121	rese = 0;
		122
		123	/* read any signals sent by the worker threads */
		124	char buf [32];
		125	while (read (respipe [0], buf, 32) == 32)
		126	;
		127	}
103	}	128	}
104		129
105	pthread_mutex_unlock (&reslock);	130	pthread_mutex_unlock (&reslock);
106		131
107	if (!req)	132	if (!req)
…		…
115	{	140	{
116	int errorno = errno;	141	int errorno = errno;
117	errno = req->errorno;	142	errno = req->errorno;
118		143
119	if (req->type == REQ_READ)	144	if (req->type == REQ_READ)
120	SvCUR_set (req->data, req->dataoffset	145	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
121	+ req->result > 0 ? req->result : 0);
122		146
123	if (req->data)	147	if (req->statdata)
124	SvREFCNT_dec (req->data);
125
126	if (req->type == REQ_STAT \|\| req->type == REQ_LSTAT \|\| req->type == REQ_FSTAT)
127	{	148	{
128	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	149	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
129	PL_laststatval = req->result;	150	PL_laststatval = req->result;
130	PL_statcache = *(req->statdata);	151	PL_statcache = *(req->statdata);
131
132	Safefree (req->statdata);
133	}	152	}
134		153
		154	ENTER;
135	PUSHMARK (SP);	155	PUSHMARK (SP);
136	XPUSHs (sv_2mortal (newSViv (req->result)));	156	XPUSHs (sv_2mortal (newSViv (req->result)));
137		157
138	if (req->type == REQ_OPEN)	158	if (req->type == REQ_OPEN)
139	{	159	{
…		…
142		162
143	PUTBACK;	163	PUTBACK;
144	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);	164	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);
145	SPAGAIN;	165	SPAGAIN;
146		166
147	fh = POPs;	167	fh = SvREFCNT_inc (POPs);
148		168
149	PUSHMARK (SP);	169	PUSHMARK (SP);
150	XPUSHs (fh);	170	XPUSHs (sv_2mortal (fh));
151	}	171	}
152		172
		173	if (SvOK (req->callback))
		174	{
153	PUTBACK;	175	PUTBACK;
154	call_sv (req->callback, G_VOID \| G_EVAL);	176	call_sv (req->callback, G_VOID \| G_EVAL);
155	SPAGAIN;	177	SPAGAIN;
		178
		179	if (SvTRUE (ERRSV))
		180	{
		181	free_req (req);
		182	croak (0);
		183	}
156		184	}
157	if (req->callback)	185
158	SvREFCNT_dec (req->callback);	186	LEAVE;
159		187
160	errno = errorno;	188	errno = errorno;
161	count++;	189	count++;
162	}	190	}
163		191
164	Safefree (req);	192	free_req (req);
165	}	193	}
166		194
167	return count;	195	return count;
168	}	196	}
169		197
…		…
207	reqe = reqs = req;	235	reqe = reqs = req;
208		236
209	pthread_cond_signal (&reqwait);	237	pthread_cond_signal (&reqwait);
210	pthread_mutex_unlock (&reqlock);	238	pthread_mutex_unlock (&reqlock);
211		239
212	while (nreqs > max_outstanding)	240	if (nreqs > max_outstanding)
		241	for (;;)
		242	{
		243	poll_cb ();
		244
		245	if (nreqs <= max_outstanding)
		246	break;
		247
		248	poll_wait ();
		249	}
		250	}
		251
		252	static void
		253	end_thread (void)
		254	{
		255	aio_req req;
		256	Newz (0, req, 1, aio_cb);
		257	req->type = REQ_QUIT;
		258
		259	send_req (req);
		260	}
		261
		262	static void min_parallel (int nthreads)
		263	{
		264	while (nthreads > started)
		265	start_thread ();
		266	}
		267
		268	static void max_parallel (int nthreads)
		269	{
		270	int cur = started;
		271
		272	while (cur > nthreads)
		273	{
		274	end_thread ();
		275	cur--;
		276	}
		277
		278	while (started > nthreads)
213	{	279	{
214	poll_wait ();	280	poll_wait ();
215	poll_cb ();	281	poll_cb ();
216	}	282	}
217	}	283	}
218		284
219	static void	285	static void create_pipe ()
220	end_thread (void)
221	{	286	{
222	aio_req req;	287	if (pipe (respipe))
223	New (0, req, 1, aio_cb);	288	croak ("unable to initialize result pipe");
224	req->type = REQ_QUIT;
225		289
226	send_req (req);	290	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
227	}	291	croak ("cannot set result pipe to nonblocking mode");
228		292
229	static void	293	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
230	read_write (int dowrite, int fd, off_t offset, size_t length,	294	croak ("cannot set result pipe to nonblocking mode");
231	SV data, STRLEN dataoffset, SV callback)	295	}
232	{
233	aio_req req;
234	STRLEN svlen;
235	char *svptr = SvPV (data, svlen);
236		296
237	SvUPGRADE (data, SVt_PV);	297	static void atfork_prepare (void)
238	SvPOK_on (data);	298	{
		299	for (;;) {
239		300
240	if (dataoffset < 0)	301	for (;;)
241	dataoffset += svlen;	302	{
		303	poll_cb ();
242		304
243	if (dataoffset < 0 \|\| dataoffset > svlen)	305	if (!nreqs)
244	croak ("data offset outside of string");	306	break;
245		307
246	if (dowrite)	308	poll_wait ();
		309	}
		310
		311	pthread_mutex_lock (&reqlock);
		312
		313	if (!nreqs)
		314	break;
		315
		316	pthread_mutex_unlock (&reqlock);
		317	}
		318
		319	pthread_mutex_lock (&reslock);
		320
		321	assert (!nreqs && !reqs && !ress);
		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	{
		332	int restart = started;
		333	started = 0;
		334
		335	atfork_parent ();
		336
		337	min_parallel (restart);
		338	}
		339
		340	/*****************************************************************************/
		341	/* work around various missing functions */
		342
		343	#if !HAVE_PREADWRITE
		344	# define pread aio_pread
		345	# define pwrite aio_pwrite
		346
		347	/*
		348	* make our pread/pwrite safe against themselves, but not against
		349	* normal read/write by using a mutex. slows down execution a lot,
		350	* but that's your problem, not mine.
		351	*/
		352	static pthread_mutex_t iolock = PTHREAD_MUTEX_INITIALIZER;
		353
		354	static ssize_t
		355	pread (int fd, void *buf, size_t count, off_t offset)
		356	{
		357	ssize_t res;
		358	off_t ooffset;
		359
		360	pthread_mutex_lock (&iolock);
		361	ooffset = lseek (fd, 0, SEEK_CUR);
		362	lseek (fd, offset, SEEK_SET);
		363	res = read (fd, buf, count);
		364	lseek (fd, ooffset, SEEK_SET);
		365	pthread_mutex_unlock (&iolock);
		366
		367	return res;
		368	}
		369
		370	static ssize_t
		371	pwrite (int fd, void *buf, size_t count, off_t offset)
		372	{
		373	ssize_t res;
		374	off_t ooffset;
		375
		376	pthread_mutex_lock (&iolock);
		377	ooffset = lseek (fd, 0, SEEK_CUR);
		378	lseek (fd, offset, SEEK_SET);
		379	res = write (fd, buf, count);
		380	lseek (fd, offset, SEEK_SET);
		381	pthread_mutex_unlock (&iolock);
		382
		383	return res;
		384	}
		385	#endif
		386
		387	#if !HAVE_FDATASYNC
		388	# define fdatasync fsync
		389	#endif
		390
		391	#if !HAVE_READAHEAD
		392	# define readahead aio_readahead
		393
		394	static char readahead_buf[4096];
		395
		396	static ssize_t
		397	readahead (int fd, off_t offset, size_t count)
		398	{
		399	while (count > 0)
247	{	400	{
248	/* write: check length and adjust. */	401	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
249	if (length < 0 \|\| length + dataoffset > svlen)	402
250	length = svlen - dataoffset;	403	pread (fd, readahead_buf, len, offset);
		404	offset += len;
		405	count -= len;
251	}	406	}
252	else
253	{
254	/* read: grow scalar as necessary */
255	svptr = SvGROW (data, length + dataoffset);
256	}
257		407
258	if (length < 0)	408	errno = 0;
259	croak ("length must not be negative");
260
261	Newz (0, req, 1, aio_cb);
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	}	409	}
		410	#endif
		411
		412	/*****************************************************************************/
276		413
277	static void *	414	static void *
278	aio_proc (void *thr_arg)	415	aio_proc (void *thr_arg)
279	{	416	{
280	aio_req req;	417	aio_req req;
…		…
306		443
307	type = req->type;	444	type = req->type;
308		445
309	switch (type)	446	switch (type)
310	{	447	{
311	case REQ_READ: req->result = pread64 (req->fd, req->dataptr, req->length, req->offset); break;	448	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;	449	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
313	#if SYS_readahead	450
314	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	451	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
315	#else
316	case REQ_READAHEAD: req->result = -1; errno = ENOSYS; break;
317	#endif
318		452
319	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	453	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
320	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	454	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
321	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	455	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
322		456
323	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;	457	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
324	case REQ_CLOSE: req->result = close (req->fd); break;	458	case REQ_CLOSE: req->result = close (req->fd); break;
325	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	459	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
		460	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
		461	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
326		462
		463	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
327	case REQ_FSYNC: req->result = fsync (req->fd); break;	464	case REQ_FSYNC: req->result = fsync (req->fd); break;
328	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
329		465
330	case REQ_QUIT:	466	case REQ_QUIT:
331	break;	467	break;
332		468
333	default:	469	default:
…		…
359	while (type != REQ_QUIT);	495	while (type != REQ_QUIT);
360		496
361	return 0;	497	return 0;
362	}	498	}
363		499
		500	#define dREQ \
		501	aio_req req; \
		502	\
		503	if (SvOK (callback) && !SvROK (callback)) \
		504	croak ("clalback must be undef or of reference type"); \
		505	\
		506	Newz (0, req, 1, aio_cb); \
		507	if (!req) \
		508	croak ("out of memory during aio_req allocation"); \
		509	\
		510	req->callback = newSVsv (callback);
		511
364	MODULE = IO::AIO PACKAGE = IO::AIO	512	MODULE = IO::AIO PACKAGE = IO::AIO
365		513
		514	PROTOTYPES: ENABLE
		515
366	BOOT:	516	BOOT:
367	{	517	{
368	if (pipe (respipe))	518	create_pipe ();
369	croak ("unable to initialize result pipe");	519	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	}	520	}
377		521
378	void	522	void
379	min_parallel(nthreads)	523	min_parallel(nthreads)
380	int nthreads	524	int nthreads
381	PROTOTYPE: $	525	PROTOTYPE: $
382	CODE:
383	while (nthreads > started)
384	start_thread ();
385		526
386	void	527	void
387	max_parallel(nthreads)	528	max_parallel(nthreads)
388	int nthreads	529	int nthreads
389	PROTOTYPE: $	530	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		531
406	int	532	int
407	max_outstanding(nreqs)	533	max_outstanding(nreqs)
408	int nreqs	534	int nreqs
409	PROTOTYPE: $	535	PROTOTYPE: $
410	CODE:	536	CODE:
411	RETVAL = max_outstanding;	537	RETVAL = max_outstanding;
412	max_outstanding = nreqs;	538	max_outstanding = nreqs;
413		539
414	void	540	void
415	aio_open(pathname,flags,mode,callback)	541	aio_open(pathname,flags,mode,callback=&PL_sv_undef)
416	SV * pathname	542	SV * pathname
417	int flags	543	int flags
418	int mode	544	int mode
419	SV * callback	545	SV * callback
420	PROTOTYPE: $$$$	546	PROTOTYPE: $$$;$
421	CODE:	547	CODE:
422	{	548	{
423	aio_req req;	549	dREQ;
424
425	Newz (0, req, 1, aio_cb);
426
427	if (!req)
428	croak ("out of memory during aio_req allocation");
429		550
430	req->type = REQ_OPEN;	551	req->type = REQ_OPEN;
431	req->data = newSVsv (pathname);	552	req->data = newSVsv (pathname);
432	req->dataptr = SvPV_nolen (req->data);	553	req->dataptr = SvPVbyte_nolen (req->data);
433	req->fd = flags;	554	req->fd = flags;
434	req->mode = mode;	555	req->mode = mode;
435	req->callback = SvREFCNT_inc (callback);
436		556
437	send_req (req);	557	send_req (req);
438	}	558	}
439		559
440	void	560	void
441	aio_close(fh,callback)	561	aio_close(fh,callback=&PL_sv_undef)
442	InputStream fh	562	SV * fh
443	SV * callback	563	SV * callback
444	PROTOTYPE: $$	564	PROTOTYPE: $;$
445	ALIAS:	565	ALIAS:
446	aio_close = REQ_CLOSE	566	aio_close = REQ_CLOSE
447	aio_fsync = REQ_FSYNC	567	aio_fsync = REQ_FSYNC
448	aio_fdatasync = REQ_FDATASYNC	568	aio_fdatasync = REQ_FDATASYNC
449	CODE:	569	CODE:
450	{	570	{
		571	dREQ;
		572
		573	req->type = ix;
		574	req->fh = newSVsv (fh);
		575	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
		576
		577	send_req (req);
		578	}
		579
		580	void
		581	aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
		582	SV * fh
		583	UV offset
		584	IV length
		585	SV * data
		586	IV dataoffset
		587	SV * callback
		588	ALIAS:
		589	aio_read = REQ_READ
		590	aio_write = REQ_WRITE
		591	PROTOTYPE: $$$$$;$
		592	CODE:
		593	{
451	aio_req req;	594	aio_req req;
		595	STRLEN svlen;
		596	char *svptr = SvPVbyte (data, svlen);
452		597
453	Newz (0, req, 1, aio_cb);	598	SvUPGRADE (data, SVt_PV);
		599	SvPOK_on (data);
454		600
455	if (!req)	601	if (dataoffset < 0)
456	croak ("out of memory during aio_req allocation");	602	dataoffset += svlen;
457		603
458	req->type = ix;	604	if (dataoffset < 0 \|\| dataoffset > svlen)
459	req->fd = PerlIO_fileno (fh);	605	croak ("data offset outside of string");
460	req->callback = SvREFCNT_inc (callback);
461		606
462	send_req (req);	607	if (ix == REQ_WRITE)
463	}	608	{
464		609	/* write: check length and adjust. */
465	void	610	if (length < 0 \|\| length + dataoffset > svlen)
466	aio_read(fh,offset,length,data,dataoffset,callback)	611	length = svlen - dataoffset;
467	InputStream fh	612	}
468	UV offset	613	else
469	IV length	614	{
470	SV * data	615	/* read: grow scalar as necessary */
471	IV dataoffset	616	svptr = SvGROW (data, length + dataoffset);
472	SV * callback	617	}
473	PROTOTYPE: $$$$$$
474	CODE:
475	read_write (0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
476
477	void
478	aio_write(fh,offset,length,data,dataoffset,callback)
479	OutputStream fh
480	UV offset
481	IV length
482	SV * data
483	IV dataoffset
484	SV * callback
485	PROTOTYPE: $$$$$$
486	CODE:
487	read_write (1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
488
489	void
490	aio_readahead(fh,offset,length,callback)
491	InputStream fh
492	UV offset
493	IV length
494	SV * callback
495	PROTOTYPE: $$$$
496	CODE:
497	{
498	aio_req req;
499		618
500	if (length < 0)	619	if (length < 0)
501	croak ("length must not be negative");	620	croak ("length must not be negative");
502		621
503	Newz (0, req, 1, aio_cb);	622	{
		623	dREQ;
504		624
505	if (!req)	625	req->type = ix;
506	croak ("out of memory during aio_req allocation");	626	req->fh = newSVsv (fh);
		627	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
		628	: IoOFP (sv_2io (fh)));
		629	req->offset = offset;
		630	req->length = length;
		631	req->data = SvREFCNT_inc (data);
		632	req->dataptr = (char *)svptr + dataoffset;
		633
		634	send_req (req);
		635	}
		636	}
		637
		638	void
		639	aio_readahead(fh,offset,length,callback=&PL_sv_undef)
		640	SV * fh
		641	UV offset
		642	IV length
		643	SV * callback
		644	PROTOTYPE: $$$;$
		645	CODE:
		646	{
		647	dREQ;
507		648
508	req->type = REQ_READAHEAD;	649	req->type = REQ_READAHEAD;
		650	req->fh = newSVsv (fh);
509	req->fd = PerlIO_fileno (fh);	651	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
510	req->offset = offset;	652	req->offset = offset;
511	req->length = length;	653	req->length = length;
512	req->callback = SvREFCNT_inc (callback);
513		654
514	send_req (req);	655	send_req (req);
515	}	656	}
516		657
517	void	658	void
518	aio_stat(fh_or_path,callback)	659	aio_stat(fh_or_path,callback=&PL_sv_undef)
519	SV * fh_or_path	660	SV * fh_or_path
520	SV * callback	661	SV * callback
521	PROTOTYPE: $$
522	ALIAS:	662	ALIAS:
		663	aio_stat = REQ_STAT
523	aio_lstat = 1	664	aio_lstat = REQ_LSTAT
524	CODE:	665	CODE:
525	{	666	{
526	aio_req req;	667	dREQ;
527
528	Newz (0, req, 1, aio_cb);
529
530	if (!req)
531	croak ("out of memory during aio_req allocation");
532		668
533	New (0, req->statdata, 1, Stat_t);	669	New (0, req->statdata, 1, Stat_t);
534
535	if (!req->statdata)	670	if (!req->statdata)
		671	{
		672	free_req (req);
536	croak ("out of memory during aio_req->statdata allocation");	673	croak ("out of memory during aio_req->statdata allocation");
		674	}
537		675
538	if (SvPOK (fh_or_path))	676	if (SvPOK (fh_or_path))
539	{	677	{
540	req->type = ix ? REQ_LSTAT : REQ_STAT;	678	req->type = ix;
541	req->data = newSVsv (fh_or_path);	679	req->data = newSVsv (fh_or_path);
542	req->dataptr = SvPV_nolen (req->data);	680	req->dataptr = SvPVbyte_nolen (req->data);
543	}	681	}
544	else	682	else
545	{	683	{
546	req->type = REQ_FSTAT;	684	req->type = REQ_FSTAT;
		685	req->fh = newSVsv (fh_or_path);
547	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	686	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
548	}	687	}
549		688
550	req->callback = SvREFCNT_inc (callback);
551
552	send_req (req);	689	send_req (req);
553	}	690	}
554		691
555	void	692	void
556	aio_unlink(pathname,callback)	693	aio_unlink(pathname,callback=&PL_sv_undef)
557	SV * pathname	694	SV * pathname
558	SV * callback	695	SV * callback
559	PROTOTYPE: $$	696	ALIAS:
		697	aio_unlink = REQ_UNLINK
		698	aio_rmdir = REQ_RMDIR
560	CODE:	699	CODE:
561	{	700	{
562	aio_req req;	701	dREQ;
563		702
564	Newz (0, req, 1, aio_cb);	703	req->type = ix;
		704	req->data = newSVsv (pathname);
		705	req->dataptr = SvPVbyte_nolen (req->data);
565		706
566	if (!req)	707	send_req (req);
567	croak ("out of memory during aio_req allocation");	708	}
		709
		710	void
		711	aio_symlink(oldpath,newpath,callback=&PL_sv_undef)
		712	SV * oldpath
		713	SV * newpath
		714	SV * callback
		715	CODE:
		716	{
		717	dREQ;
568		718
569	req->type = REQ_UNLINK;	719	req->type = REQ_SYMLINK;
		720	req->fh = newSVsv (oldpath);
		721	req->data2ptr = SvPVbyte_nolen (req->fh);
570	req->data = newSVsv (pathname);	722	req->data = newSVsv (newpath);
571	req->dataptr = SvPV_nolen (req->data);	723	req->dataptr = SvPVbyte_nolen (req->data);
572	req->callback = SvREFCNT_inc (callback);
573		724
574	send_req (req);	725	send_req (req);
575	}	726	}
576		727
577	void	728	void

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Comparing IO-AIO/AIO.xs (file contents): Revision 1.7 by root, Mon Jul 11 01:49:14 2005 UTC vs. Revision 1.27 by root, Wed Aug 17 04:47:02 2005 UTC

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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.7 by root, Mon Jul 11 01:49:14 2005 UTC vs.
Revision 1.27 by root, Wed Aug 17 04:47:02 2005 UTC