[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 1.26 by root, Wed Aug 17 03:52:20 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;
		67	static pthread_mutex_t frklock = PTHREAD_MUTEX_INITIALIZER;
61	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	68	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
62		69
63	static volatile aio_req reqs, reqe; /* queue start, queue end */	70	static volatile aio_req reqs, reqe; /* queue start, queue end */
64	static volatile aio_req ress, rese; /* queue start, queue end */	71	static volatile aio_req ress, rese; /* queue start, queue end */
65		72
		73	static void free_req (aio_req req)
		74	{
		75	if (req->data)
		76	SvREFCNT_dec (req->data);
		77
		78	if (req->fh)
		79	SvREFCNT_dec (req->fh);
		80
		81	if (req->type == REQ_STAT \|\| req->type == REQ_LSTAT \|\| req->type == REQ_FSTAT)
		82	Safefree (req->statdata);
		83
		84	if (req->callback)
		85	SvREFCNT_dec (req->callback);
		86
		87	Safefree (req);
		88	}
		89
66	static void	90	static void
67	poll_wait ()	91	poll_wait ()
68	{	92	{
69	if (!nreqs)	93	if (nreqs && !ress)
70	return;	94	{
71
72	fd_set rfd;	95	fd_set rfd;
73	FD_ZERO(&rfd);	96	FD_ZERO(&rfd);
74	FD_SET(respipe [0], &rfd);	97	FD_SET(respipe [0], &rfd);
75		98
76	select (respipe [0] + 1, &rfd, 0, 0, 0);	99	select (respipe [0] + 1, &rfd, 0, 0, 0);
		100	}
77	}	101	}
78		102
79	static int	103	static int
80	poll_cb ()	104	poll_cb ()
81	{	105	{
82	dSP;	106	dSP;
83	int count = 0;	107	int count = 0;
		108	int do_croak = 0;
84	aio_req req;	109	aio_req req, prv;
85		110
		111	pthread_mutex_lock (&reslock);
		112
86	{	113	{
87	/* read and signals sent by the worker threads */	114	/* read any signals sent by the worker threads */
88	char buf [32];	115	char buf [32];
89	while (read (respipe [0], buf, 32) > 0)	116	while (read (respipe [0], buf, 32) == 32)
90	;	117	;
91	}	118	}
92		119
93	for (;;)
94	{
95	pthread_mutex_lock (&reslock);
96
97	req = ress;	120	req = ress;
		121	ress = rese = 0;
98		122
99	if (ress)
100	{
101	ress = ress->next;
102	if (!ress) rese = 0;
103	}
104
105	pthread_mutex_unlock (&reslock);	123	pthread_mutex_unlock (&reslock);
106		124
107	if (!req)	125	while (req)
108	break;	126	{
109
110	nreqs--;	127	nreqs--;
111		128
112	if (req->type == REQ_QUIT)	129	if (req->type == REQ_QUIT)
113	started--;	130	started--;
114	else	131	else
…		…
118		135
119	if (req->type == REQ_READ)	136	if (req->type == REQ_READ)
120	SvCUR_set (req->data, req->dataoffset	137	SvCUR_set (req->data, req->dataoffset
121	+ req->result > 0 ? req->result : 0);	138	+ req->result > 0 ? req->result : 0);
122		139
123	if (req->data)
124	SvREFCNT_dec (req->data);
125
126	if (req->type == REQ_STAT \|\| req->type == REQ_LSTAT \|\| req->type == REQ_FSTAT)	140	if (req->type == REQ_STAT \|\| req->type == REQ_LSTAT \|\| req->type == REQ_FSTAT)
127	{	141	{
128	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	142	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
129	PL_laststatval = req->result;	143	PL_laststatval = req->result;
130	PL_statcache = *(req->statdata);	144	PL_statcache = *(req->statdata);
131
132	Safefree (req->statdata);
133	}	145	}
134		146
		147	ENTER;
135	PUSHMARK (SP);	148	PUSHMARK (SP);
136	XPUSHs (sv_2mortal (newSViv (req->result)));	149	XPUSHs (sv_2mortal (newSViv (req->result)));
137		150
138	if (req->type == REQ_OPEN)	151	if (req->type == REQ_OPEN)
139	{	152	{
…		…
142		155
143	PUTBACK;	156	PUTBACK;
144	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);	157	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);
145	SPAGAIN;	158	SPAGAIN;
146		159
147	fh = POPs;	160	fh = SvREFCNT_inc (POPs);
148		161
149	PUSHMARK (SP);	162	PUSHMARK (SP);
150	XPUSHs (fh);	163	XPUSHs (sv_2mortal (fh));
151	}	164	}
152		165
		166	if (SvOK (req->callback))
		167	{
153	PUTBACK;	168	PUTBACK;
154	call_sv (req->callback, G_VOID \| G_EVAL);	169	call_sv (req->callback, G_VOID \| G_EVAL);
155	SPAGAIN;	170	SPAGAIN;
		171	}
		172
		173	LEAVE;
		174
		175	do_croak = SvTRUE (ERRSV);
156		176
157	if (req->callback)
158	SvREFCNT_dec (req->callback);
159
160	errno = errorno;	177	errno = errorno;
161	count++;	178	count++;
162	}	179	}
163		180
164	Safefree (req);	181	prv = req;
		182	req = req->next;
		183	free_req (prv);
		184
		185	if (do_croak)
		186	croak (0);
165	}	187	}
166		188
167	return count;	189	return count;
168	}	190	}
169		191
…		…
218		240
219	static void	241	static void
220	end_thread (void)	242	end_thread (void)
221	{	243	{
222	aio_req req;	244	aio_req req;
223	New (0, req, 1, aio_cb);	245	Newz (0, req, 1, aio_cb);
224	req->type = REQ_QUIT;	246	req->type = REQ_QUIT;
225		247
226	send_req (req);	248	send_req (req);
227	}	249	}
228		250
229	static void
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		251
237	SvUPGRADE (data, SVt_PV);	252	static void min_parallel (int nthreads)
238	SvPOK_on (data);	253	{
		254	while (nthreads > started)
		255	start_thread ();
		256	}
239		257
240	if (dataoffset < 0)	258	static void max_parallel (int nthreads)
		259	{
		260	int cur = started;
		261	while (cur > nthreads)
		262	{
		263	end_thread ();
		264	cur--;
		265	}
		266
		267	while (started > nthreads)
		268	{
		269	poll_wait ();
		270	poll_cb ();
		271	}
		272	}
		273
		274	static void create_pipe ()
		275	{
		276	if (pipe (respipe))
		277	croak ("unable to initialize result pipe");
		278
		279	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
		280	croak ("cannot set result pipe to nonblocking mode");
		281
		282	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
		283	croak ("cannot set result pipe to nonblocking mode");
		284	}
		285
		286	static void atfork_prepare (void)
		287	{
		288	pthread_mutex_lock (&frklock);
		289	pthread_mutex_lock (&reqlock);
		290	pthread_mutex_lock (&reslock);
		291	}
		292
		293	static void atfork_parent (void)
		294	{
		295	pthread_mutex_unlock (&reslock);
		296	pthread_mutex_unlock (&reqlock);
		297	pthread_mutex_unlock (&frklock);
		298	}
		299
		300	static void atfork_child (void)
		301	{
		302	int restart = started;
		303	started = 0;
		304
		305	while (reqs)
		306	{
		307	free_req (reqs);
		308	reqs = reqs->next;
		309	}
		310
		311	reqs = reqe = 0;
		312
		313	while (ress)
		314	{
		315	free_req (ress);
		316	ress = ress->next;
		317	}
		318
		319	ress = rese = 0;
		320
		321	close (respipe [0]);
		322	close (respipe [1]);
		323
		324	create_pipe ();
		325
		326	atfork_parent ();
		327
		328	min_parallel (restart);
		329	}
		330
		331	/*****************************************************************************/
		332	/* work around various missing functions */
		333
		334	#if !HAVE_PREADWRITE
		335	# define pread aio_pread
		336	# define pwrite aio_pwrite
		337
		338	/*
		339	* make our pread/pwrite safe against themselves, but not against
		340	* normal read/write by using a mutex. slows down execution a lot,
		341	* but that's your problem, not mine.
		342	*/
		343	static pthread_mutex_t iolock = PTHREAD_MUTEX_INITIALIZER;
		344
		345	static ssize_t
		346	pread (int fd, void *buf, size_t count, off_t offset)
		347	{
		348	ssize_t res;
		349	off_t ooffset;
		350
		351	pthread_mutex_lock (&iolock);
		352	ooffset = lseek (fd, 0, SEEK_CUR);
		353	lseek (fd, offset, SEEK_SET);
		354	res = read (fd, buf, count);
		355	lseek (fd, ooffset, SEEK_SET);
		356	pthread_mutex_unlock (&iolock);
		357
		358	return res;
		359	}
		360
		361	static ssize_t
		362	pwrite (int fd, void *buf, size_t count, off_t offset)
		363	{
		364	ssize_t res;
		365	off_t ooffset;
		366
		367	pthread_mutex_lock (&iolock);
		368	ooffset = lseek (fd, 0, SEEK_CUR);
		369	lseek (fd, offset, SEEK_SET);
		370	res = write (fd, buf, count);
		371	lseek (fd, offset, SEEK_SET);
		372	pthread_mutex_unlock (&iolock);
		373
		374	return res;
		375	}
		376	#endif
		377
		378	#if !HAVE_FDATASYNC
		379	# define fdatasync fsync
		380	#endif
		381
		382	#if !HAVE_READAHEAD
		383	# define readahead aio_readahead
		384
		385	static char readahead_buf[4096];
		386
		387	static ssize_t
		388	readahead (int fd, off_t offset, size_t count)
		389	{
		390	while (count > 0)
		391	{
		392	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
		393
		394	pread (fd, readahead_buf, len, offset);
241	dataoffset += svlen;	395	offset += len;
242		396	count -= len;
243	if (dataoffset < 0 \|\| dataoffset > svlen)
244	croak ("data offset outside of string");
245
246	if (dowrite)
247	{	397	}
248	/* write: check length and adjust. */
249	if (length < 0 \|\| length + dataoffset > svlen)
250	length = svlen - dataoffset;
251	}
252	else
253	{
254	/* read: grow scalar as necessary */
255	svptr = SvGROW (data, length + dataoffset);
256	}
257		398
258	if (length < 0)	399	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	}	400	}
		401	#endif
		402
		403	/*****************************************************************************/
276		404
277	static void *	405	static void *
278	aio_proc (void *thr_arg)	406	aio_proc (void *thr_arg)
279	{	407	{
280	aio_req req;	408	aio_req req;
…		…
306		434
307	type = req->type;	435	type = req->type;
308		436
309	switch (type)	437	switch (type)
310	{	438	{
311	case REQ_READ: req->result = pread64 (req->fd, req->dataptr, req->length, req->offset); break;	439	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;	440	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
313	#if SYS_readahead	441
314	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	442	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		443
319	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	444	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
320	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	445	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
321	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	446	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
322		447
323	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;	448	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
324	case REQ_CLOSE: req->result = close (req->fd); break;	449	case REQ_CLOSE: req->result = close (req->fd); break;
325	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	450	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
		451	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
		452	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
326		453
		454	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
327	case REQ_FSYNC: req->result = fsync (req->fd); break;	455	case REQ_FSYNC: req->result = fsync (req->fd); break;
328	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
329		456
330	case REQ_QUIT:	457	case REQ_QUIT:
331	break;	458	break;
332		459
333	default:	460	default:
…		…
359	while (type != REQ_QUIT);	486	while (type != REQ_QUIT);
360		487
361	return 0;	488	return 0;
362	}	489	}
363		490
		491	#define dREQ \
		492	aio_req req; \
		493	\
		494	if (SvOK (callback) && !SvROK (callback)) \
		495	croak ("clalback must be undef or of reference type"); \
		496	\
		497	Newz (0, req, 1, aio_cb); \
		498	if (!req) \
		499	croak ("out of memory during aio_req allocation"); \
		500	\
		501	req->callback = SvREFCNT_inc (callback);
		502
364	MODULE = IO::AIO PACKAGE = IO::AIO	503	MODULE = IO::AIO PACKAGE = IO::AIO
365		504
		505	PROTOTYPES: ENABLE
		506
366	BOOT:	507	BOOT:
367	{	508	{
368	if (pipe (respipe))	509	create_pipe ();
369	croak ("unable to initialize result pipe");	510	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	}	511	}
377		512
378	void	513	void
379	min_parallel(nthreads)	514	min_parallel(nthreads)
380	int nthreads	515	int nthreads
381	PROTOTYPE: $	516	PROTOTYPE: $
382	CODE:
383	while (nthreads > started)
384	start_thread ();
385		517
386	void	518	void
387	max_parallel(nthreads)	519	max_parallel(nthreads)
388	int nthreads	520	int nthreads
389	PROTOTYPE: $	521	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		522
406	int	523	int
407	max_outstanding(nreqs)	524	max_outstanding(nreqs)
408	int nreqs	525	int nreqs
409	PROTOTYPE: $	526	PROTOTYPE: $
410	CODE:	527	CODE:
411	RETVAL = max_outstanding;	528	RETVAL = max_outstanding;
412	max_outstanding = nreqs;	529	max_outstanding = nreqs;
413		530
414	void	531	void
415	aio_open(pathname,flags,mode,callback)	532	aio_open(pathname,flags,mode,callback=&PL_sv_undef)
416	SV * pathname	533	SV * pathname
417	int flags	534	int flags
418	int mode	535	int mode
419	SV * callback	536	SV * callback
420	PROTOTYPE: $$$$	537	PROTOTYPE: $$$;$
421	CODE:	538	CODE:
422	{	539	{
423	aio_req req;	540	dREQ;
424
425	Newz (0, req, 1, aio_cb);
426
427	if (!req)
428	croak ("out of memory during aio_req allocation");
429		541
430	req->type = REQ_OPEN;	542	req->type = REQ_OPEN;
431	req->data = newSVsv (pathname);	543	req->data = newSVsv (pathname);
432	req->dataptr = SvPV_nolen (req->data);	544	req->dataptr = SvPVbyte_nolen (req->data);
433	req->fd = flags;	545	req->fd = flags;
434	req->mode = mode;	546	req->mode = mode;
435	req->callback = SvREFCNT_inc (callback);
436		547
437	send_req (req);	548	send_req (req);
438	}	549	}
439		550
440	void	551	void
441	aio_close(fh,callback)	552	aio_close(fh,callback=&PL_sv_undef)
442	InputStream fh	553	SV * fh
443	SV * callback	554	SV * callback
444	PROTOTYPE: $$	555	PROTOTYPE: $;$
445	ALIAS:	556	ALIAS:
446	aio_close = REQ_CLOSE	557	aio_close = REQ_CLOSE
447	aio_fsync = REQ_FSYNC	558	aio_fsync = REQ_FSYNC
448	aio_fdatasync = REQ_FDATASYNC	559	aio_fdatasync = REQ_FDATASYNC
449	CODE:	560	CODE:
450	{	561	{
		562	dREQ;
		563
		564	req->type = ix;
		565	req->fh = newSVsv (fh);
		566	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
		567
		568	send_req (req);
		569	}
		570
		571	void
		572	aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
		573	SV * fh
		574	UV offset
		575	IV length
		576	SV * data
		577	IV dataoffset
		578	SV * callback
		579	ALIAS:
		580	aio_read = REQ_READ
		581	aio_write = REQ_WRITE
		582	PROTOTYPE: $$$$$;$
		583	CODE:
		584	{
451	aio_req req;	585	aio_req req;
		586	STRLEN svlen;
		587	char *svptr = SvPVbyte (data, svlen);
452		588
453	Newz (0, req, 1, aio_cb);	589	SvUPGRADE (data, SVt_PV);
		590	SvPOK_on (data);
454		591
455	if (!req)	592	if (dataoffset < 0)
456	croak ("out of memory during aio_req allocation");	593	dataoffset += svlen;
457		594
458	req->type = ix;	595	if (dataoffset < 0 \|\| dataoffset > svlen)
459	req->fd = PerlIO_fileno (fh);	596	croak ("data offset outside of string");
460	req->callback = SvREFCNT_inc (callback);
461		597
462	send_req (req);	598	if (ix == REQ_WRITE)
463	}	599	{
464		600	/* write: check length and adjust. */
465	void	601	if (length < 0 \|\| length + dataoffset > svlen)
466	aio_read(fh,offset,length,data,dataoffset,callback)	602	length = svlen - dataoffset;
467	InputStream fh	603	}
468	UV offset	604	else
469	IV length	605	{
470	SV * data	606	/* read: grow scalar as necessary */
471	IV dataoffset	607	svptr = SvGROW (data, length + dataoffset);
472	SV * callback	608	}
473	PROTOTYPE: $$$$$$
474	CODE:
475	read_write (0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
476
477	void
478	aio_write(fh,offset,length,data,dataoffset,callback)
479	OutputStream fh
480	UV offset
481	IV length
482	SV * data
483	IV dataoffset
484	SV * callback
485	PROTOTYPE: $$$$$$
486	CODE:
487	read_write (1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
488
489	void
490	aio_readahead(fh,offset,length,callback)
491	InputStream fh
492	UV offset
493	IV length
494	SV * callback
495	PROTOTYPE: $$$$
496	CODE:
497	{
498	aio_req req;
499		609
500	if (length < 0)	610	if (length < 0)
501	croak ("length must not be negative");	611	croak ("length must not be negative");
502		612
503	Newz (0, req, 1, aio_cb);	613	{
		614	dREQ;
504		615
505	if (!req)	616	req->type = ix;
506	croak ("out of memory during aio_req allocation");	617	req->fh = newSVsv (fh);
		618	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
		619	: IoOFP (sv_2io (fh)));
		620	req->offset = offset;
		621	req->length = length;
		622	req->data = SvREFCNT_inc (data);
		623	req->dataptr = (char *)svptr + dataoffset;
		624	req->callback = SvREFCNT_inc (callback);
		625
		626	send_req (req);
		627	}
		628	}
		629
		630	void
		631	aio_readahead(fh,offset,length,callback=&PL_sv_undef)
		632	SV * fh
		633	UV offset
		634	IV length
		635	SV * callback
		636	PROTOTYPE: $$$;$
		637	CODE:
		638	{
		639	dREQ;
507		640
508	req->type = REQ_READAHEAD;	641	req->type = REQ_READAHEAD;
		642	req->fh = newSVsv (fh);
509	req->fd = PerlIO_fileno (fh);	643	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
510	req->offset = offset;	644	req->offset = offset;
511	req->length = length;	645	req->length = length;
512	req->callback = SvREFCNT_inc (callback);
513		646
514	send_req (req);	647	send_req (req);
515	}	648	}
516		649
517	void	650	void
518	aio_stat(fh_or_path,callback)	651	aio_stat(fh_or_path,callback=&PL_sv_undef)
519	SV * fh_or_path	652	SV * fh_or_path
520	SV * callback	653	SV * callback
521	PROTOTYPE: $$
522	ALIAS:	654	ALIAS:
		655	aio_stat = REQ_STAT
523	aio_lstat = 1	656	aio_lstat = REQ_LSTAT
524	CODE:	657	CODE:
525	{	658	{
526	aio_req req;	659	dREQ;
527
528	Newz (0, req, 1, aio_cb);
529
530	if (!req)
531	croak ("out of memory during aio_req allocation");
532		660
533	New (0, req->statdata, 1, Stat_t);	661	New (0, req->statdata, 1, Stat_t);
534
535	if (!req->statdata)	662	if (!req->statdata)
536	croak ("out of memory during aio_req->statdata allocation");	663	croak ("out of memory during aio_req->statdata allocation (sorry, i just leaked memory, too)");
537		664
538	if (SvPOK (fh_or_path))	665	if (SvPOK (fh_or_path))
539	{	666	{
540	req->type = ix ? REQ_LSTAT : REQ_STAT;	667	req->type = ix;
541	req->data = newSVsv (fh_or_path);	668	req->data = newSVsv (fh_or_path);
542	req->dataptr = SvPV_nolen (req->data);	669	req->dataptr = SvPVbyte_nolen (req->data);
543	}	670	}
544	else	671	else
545	{	672	{
546	req->type = REQ_FSTAT;	673	req->type = REQ_FSTAT;
		674	req->fh = newSVsv (fh_or_path);
547	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	675	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
548	}	676	}
549		677
550	req->callback = SvREFCNT_inc (callback);
551
552	send_req (req);	678	send_req (req);
553	}	679	}
554		680
555	void	681	void
556	aio_unlink(pathname,callback)	682	aio_unlink(pathname,callback=&PL_sv_undef)
557	SV * pathname	683	SV * pathname
558	SV * callback	684	SV * callback
559	PROTOTYPE: $$	685	ALIAS:
		686	aio_unlink = REQ_UNLINK
		687	aio_rmdir = REQ_RMDIR
560	CODE:	688	CODE:
561	{	689	{
562	aio_req req;	690	dREQ;
563		691
564	Newz (0, req, 1, aio_cb);	692	req->type = ix;
		693	req->data = newSVsv (pathname);
		694	req->dataptr = SvPVbyte_nolen (req->data);
565		695
566	if (!req)	696	send_req (req);
567	croak ("out of memory during aio_req allocation");	697	}
		698
		699	void
		700	aio_symlink(oldpath,newpath,callback=&PL_sv_undef)
		701	SV * oldpath
		702	SV * newpath
		703	SV * callback
		704	CODE:
		705	{
		706	dREQ;
568		707
569	req->type = REQ_UNLINK;	708	req->type = REQ_SYMLINK;
		709	req->fh = newSVsv (oldpath);
		710	req->data2ptr = SvPVbyte_nolen (req->fh);
570	req->data = newSVsv (pathname);	711	req->data = newSVsv (newpath);
571	req->dataptr = SvPV_nolen (req->data);	712	req->dataptr = SvPVbyte_nolen (req->data);
572	req->callback = SvREFCNT_inc (callback);
573		713
574	send_req (req);	714	send_req (req);
575	}	715	}
576		716
577	void	717	void
…		…
582	{	722	{
583	poll_wait ();	723	poll_wait ();
584	poll_cb ();	724	poll_cb ();
585	}	725	}
586		726
		727	void
		728	poll()
		729	PROTOTYPE:
		730	CODE:
		731	if (nreqs)
		732	{
		733	poll_wait ();
		734	poll_cb ();
		735	}
		736
587	int	737	int
588	poll_fileno()	738	poll_fileno()
589	PROTOTYPE:	739	PROTOTYPE:
590	CODE:	740	CODE:
591	RETVAL = respipe [0];	741	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 1.26 by root, Wed Aug 17 03:52:20 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 1.26 by root, Wed Aug 17 03:52:20 2005 UTC