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

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.4 by root, Sun Jul 10 20:57:00 2005 UTC vs.
Revision 1.29 by root, Wed Aug 17 06:12:10 2005 UTC

…		…
1	#define PERL_NO_GET_CONTEXT	1	#define _REENTRANT 1
		2	#include <errno.h>
2		3
3	#include "EXTERN.h"	4	#include "EXTERN.h"
4	#include "perl.h"	5	#include "perl.h"
5	#include "XSUB.h"	6	#include "XSUB.h"
6		7
		8	#include "autoconf/config.h"
		9
7	#include <sys/types.h>	10	#include <sys/types.h>
8	#include <sys/stat.h>	11	#include <sys/stat.h>
		12
9	#include <unistd.h>	13	#include <unistd.h>
10	#include <fcntl.h>	14	#include <fcntl.h>
11	#include <signal.h>	15	#include <signal.h>
12	#include <sched.h>	16	#include <sched.h>
13	#include <endian.h>
14		17
15	#include <pthread.h>	18	#include <pthread.h>
16	#include <sys/syscall.h>
17		19
18	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 ;) */
19	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 ;) */
20	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 ;) */
21		23
27		29
28	enum {	30	enum {
29	REQ_QUIT,	31	REQ_QUIT,
30	REQ_OPEN, REQ_CLOSE,	32	REQ_OPEN, REQ_CLOSE,
31	REQ_READ, REQ_WRITE, REQ_READAHEAD,	33	REQ_READ, REQ_WRITE, REQ_READAHEAD,
32	REQ_STAT, REQ_LSTAT, REQ_FSTAT, REQ_UNLINK,	34	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
33	REQ_FSYNC, REQ_FDATASYNC,	35	REQ_FSYNC, REQ_FDATASYNC,
		36	REQ_UNLINK, REQ_RMDIR,
		37	REQ_SYMLINK,
34	};	38	};
35		39
36	typedef struct aio_cb {	40	typedef struct aio_cb {
37	struct aio_cb *volatile next;	41	struct aio_cb *volatile next;
38		42
…		…
42	off_t offset;	46	off_t offset;
43	size_t length;	47	size_t length;
44	ssize_t result;	48	ssize_t result;
45	mode_t mode; /* open */	49	mode_t mode; /* open */
46	int errorno;	50	int errorno;
47	SV data, callback;	51	SV data, callback, *fh;
48	void *dataptr;	52	void dataptr, data2ptr;
49	STRLEN dataoffset;	53	STRLEN dataoffset;
50		54
51	Stat_t *statdata;	55	Stat_t *statdata;
52	} aio_cb;	56	} aio_cb;
53		57
54	typedef aio_cb *aio_req;	58	typedef aio_cb *aio_req;
55		59
56	static int started;	60	static int started;
57	static int nreqs;	61	static volatile int nreqs;
58	static int max_outstanding = 1<<30;	62	static int max_outstanding = 1<<30;
59	static int respipe [2];	63	static int respipe [2];
60		64
61	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	65	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;
62	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;	66	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
63	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	67	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
64		68
65	static volatile aio_req reqs, reqe; /* queue start, queue end */	69	static volatile aio_req reqs, reqe; /* queue start, queue end */
66	static volatile aio_req ress, rese; /* queue start, queue end */	70	static volatile aio_req ress, rese; /* queue start, queue end */
67		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
68	static void	89	static void
69	poll_wait ()	90	poll_wait ()
70	{	91	{
71	if (!nreqs)	92	if (nreqs && !ress)
72	return;	93	{
73
74	fd_set rfd;	94	fd_set rfd;
75	FD_ZERO(&rfd);	95	FD_ZERO(&rfd);
76	FD_SET(respipe [0], &rfd);	96	FD_SET(respipe [0], &rfd);
77		97
78	select (respipe [0] + 1, &rfd, 0, 0, 0);	98	select (respipe [0] + 1, &rfd, 0, 0, 0);
		99	}
79	}	100	}
80		101
81	static int	102	static int
82	poll_cb (pTHX)	103	poll_cb ()
83	{	104	{
84	dSP;	105	dSP;
85	int count = 0;	106	int count = 0;
		107	int do_croak = 0;
86	aio_req req;	108	aio_req req;
87
88	{
89	/* read and signals sent by the worker threads */
90	char buf [32];
91	while (read (respipe [0], buf, 32) > 0)
92	;
93	}
94		109
95	for (;;)	110	for (;;)
96	{	111	{
97	pthread_mutex_lock (&reslock);	112	pthread_mutex_lock (&reslock);
98
99	req = ress;	113	req = ress;
100		114
101	if (ress)	115	if (req)
102	{	116	{
103	ress = ress->next;	117	ress = req->next;
		118
104	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	}
105	}	128	}
106		129
107	pthread_mutex_unlock (&reslock);	130	pthread_mutex_unlock (&reslock);
108		131
109	if (!req)	132	if (!req)
…		…
117	{	140	{
118	int errorno = errno;	141	int errorno = errno;
119	errno = req->errorno;	142	errno = req->errorno;
120		143
121	if (req->type == REQ_READ)	144	if (req->type == REQ_READ)
122	SvCUR_set (req->data, req->dataoffset	145	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
123	+ req->result > 0 ? req->result : 0);
124		146
		147	if (req->data2ptr && (req->type == REQ_READ \|\| req->type == REQ_WRITE))
		148	SvREADONLY_off (req->data);
		149
125	if (req->data)	150	if (req->statdata)
126	SvREFCNT_dec (req->data);
127
128	if (req->type == REQ_STAT \|\| req->type == REQ_LSTAT \|\| req->type == REQ_FSTAT)
129	{	151	{
130	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	152	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
131	PL_laststatval = req->result;	153	PL_laststatval = req->result;
132	PL_statcache = *(req->statdata);	154	PL_statcache = *(req->statdata);
133
134	Safefree (req->statdata);
135	}	155	}
136		156
		157	ENTER;
137	PUSHMARK (SP);	158	PUSHMARK (SP);
138	XPUSHs (sv_2mortal (newSViv (req->result)));	159	XPUSHs (sv_2mortal (newSViv (req->result)));
139		160
140	if (req->type == REQ_OPEN)	161	if (req->type == REQ_OPEN)
141	{	162	{
…		…
144		165
145	PUTBACK;	166	PUTBACK;
146	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);	167	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);
147	SPAGAIN;	168	SPAGAIN;
148		169
149	fh = POPs;	170	fh = SvREFCNT_inc (POPs);
150		171
151	PUSHMARK (SP);	172	PUSHMARK (SP);
152	XPUSHs (fh);	173	XPUSHs (sv_2mortal (fh));
153	}	174	}
154		175
		176	if (SvOK (req->callback))
		177	{
155	PUTBACK;	178	PUTBACK;
156	call_sv (req->callback, G_VOID \| G_EVAL);	179	call_sv (req->callback, G_VOID \| G_EVAL);
157	SPAGAIN;	180	SPAGAIN;
		181
		182	if (SvTRUE (ERRSV))
		183	{
		184	free_req (req);
		185	croak (0);
		186	}
158		187	}
159	if (req->callback)	188
160	SvREFCNT_dec (req->callback);	189	LEAVE;
161		190
162	errno = errorno;	191	errno = errorno;
163	count++;	192	count++;
164	}	193	}
165		194
166	Safefree (req);	195	free_req (req);
167	}	196	}
168		197
169	return count;	198	return count;
170	}	199	}
171		200
…		…
209	reqe = reqs = req;	238	reqe = reqs = req;
210		239
211	pthread_cond_signal (&reqwait);	240	pthread_cond_signal (&reqwait);
212	pthread_mutex_unlock (&reqlock);	241	pthread_mutex_unlock (&reqlock);
213		242
214	while (nreqs > max_outstanding)	243	if (nreqs > max_outstanding)
		244	for (;;)
		245	{
		246	poll_cb ();
		247
		248	if (nreqs <= max_outstanding)
		249	break;
		250
		251	poll_wait ();
		252	}
		253	}
		254
		255	static void
		256	end_thread (void)
		257	{
		258	aio_req req;
		259	Newz (0, req, 1, aio_cb);
		260	req->type = REQ_QUIT;
		261
		262	send_req (req);
		263	}
		264
		265	static void min_parallel (int nthreads)
		266	{
		267	while (nthreads > started)
		268	start_thread ();
		269	}
		270
		271	static void max_parallel (int nthreads)
		272	{
		273	int cur = started;
		274
		275	while (cur > nthreads)
		276	{
		277	end_thread ();
		278	cur--;
		279	}
		280
		281	while (started > nthreads)
215	{	282	{
216	poll_wait ();	283	poll_wait ();
217	poll_cb ();	284	poll_cb ();
218	}	285	}
219	}	286	}
220		287
221	static void	288	static void create_pipe ()
222	end_thread (void)
223	{	289	{
		290	if (pipe (respipe))
		291	croak ("unable to initialize result pipe");
		292
		293	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
		294	croak ("cannot set result pipe to nonblocking mode");
		295
		296	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
		297	croak ("cannot set result pipe to nonblocking mode");
		298	}
		299
		300	static void atfork_prepare (void)
		301	{
		302	pthread_mutex_lock (&reqlock);
		303	pthread_mutex_lock (&reslock);
		304	}
		305
		306	static void atfork_parent (void)
		307	{
		308	pthread_mutex_unlock (&reslock);
		309	pthread_mutex_unlock (&reqlock);
		310	}
		311
		312	static void atfork_child (void)
		313	{
224	aio_req req;	314	aio_req prv;
225	New (0, req, 1, aio_cb);
226	req->type = REQ_QUIT;
227		315
228	send_req (req);	316	int restart = started;
229	}	317	started = 0;
230		318
231	static void	319	while (reqs)
232	read_write (pTHX_
233	int dowrite, int fd, off_t offset, size_t length,
234	SV data, STRLEN dataoffset, SV callback)
235	{
236	aio_req req;
237	STRLEN svlen;
238	char *svptr = SvPV (data, svlen);
239
240	SvUPGRADE (data, SVt_PV);
241	SvPOK_on (data);
242
243	if (dataoffset < 0)
244	dataoffset += svlen;
245
246	if (dataoffset < 0 \|\| dataoffset > svlen)
247	croak ("data offset outside of string");
248
249	if (dowrite)
250	{	320	{
251	/* write: check length and adjust. */	321	prv = reqs;
252	if (length < 0 \|\| length + dataoffset > svlen)	322	reqs = prv->next;
253	length = svlen - dataoffset;	323	free_req (prv);
254	}	324	}
255	else	325
		326	reqs = reqe = 0;
		327
		328	while (ress)
256	{	329	{
257	/* read: grow scalar as necessary */	330	prv = ress;
258	svptr = SvGROW (data, length + dataoffset);	331	ress = prv->next;
		332	free_req (prv);
		333	}
		334
		335	ress = rese = 0;
		336
		337	close (respipe [0]);
		338	close (respipe [1]);
		339	create_pipe ();
		340
		341	atfork_parent ();
		342
		343	min_parallel (restart);
		344	}
		345
		346	/*****************************************************************************/
		347	/* work around various missing functions */
		348
		349	#if !HAVE_PREADWRITE
		350	# define pread aio_pread
		351	# define pwrite aio_pwrite
		352
		353	/*
		354	* make our pread/pwrite safe against themselves, but not against
		355	* normal read/write by using a mutex. slows down execution a lot,
		356	* but that's your problem, not mine.
		357	*/
		358	static pthread_mutex_t iolock = PTHREAD_MUTEX_INITIALIZER;
		359
		360	static ssize_t
		361	pread (int fd, void *buf, size_t count, off_t offset)
		362	{
		363	ssize_t res;
		364	off_t ooffset;
		365
		366	pthread_mutex_lock (&iolock);
		367	ooffset = lseek (fd, 0, SEEK_CUR);
		368	lseek (fd, offset, SEEK_SET);
		369	res = read (fd, buf, count);
		370	lseek (fd, ooffset, SEEK_SET);
		371	pthread_mutex_unlock (&iolock);
		372
		373	return res;
		374	}
		375
		376	static ssize_t
		377	pwrite (int fd, void *buf, size_t count, off_t offset)
		378	{
		379	ssize_t res;
		380	off_t ooffset;
		381
		382	pthread_mutex_lock (&iolock);
		383	ooffset = lseek (fd, 0, SEEK_CUR);
		384	lseek (fd, offset, SEEK_SET);
		385	res = write (fd, buf, count);
		386	lseek (fd, offset, SEEK_SET);
		387	pthread_mutex_unlock (&iolock);
		388
		389	return res;
		390	}
		391	#endif
		392
		393	#if !HAVE_FDATASYNC
		394	# define fdatasync fsync
		395	#endif
		396
		397	#if !HAVE_READAHEAD
		398	# define readahead aio_readahead
		399
		400	static char readahead_buf[4096];
		401
		402	static ssize_t
		403	readahead (int fd, off_t offset, size_t count)
		404	{
		405	while (count > 0)
259	}	406	{
		407	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
260		408
261	if (length < 0)	409	pread (fd, readahead_buf, len, offset);
262	croak ("length must not be negative");	410	offset += len;
		411	count -= len;
		412	}
263		413
264	Newz (0, req, 1, aio_cb);	414	errno = 0;
265
266	if (!req)
267	croak ("out of memory during aio_req allocation");
268
269	req->type = dowrite ? REQ_WRITE : REQ_READ;
270	req->fd = fd;
271	req->offset = offset;
272	req->length = length;
273	req->data = SvREFCNT_inc (data);
274	req->dataptr = (char *)svptr + dataoffset;
275	req->callback = SvREFCNT_inc (callback);
276
277	send_req (req);
278	}	415	}
		416	#endif
		417
		418	/*****************************************************************************/
279		419
280	static void *	420	static void *
281	aio_proc (void *thr_arg)	421	aio_proc (void *thr_arg)
282	{	422	{
283	aio_req req;	423	aio_req req;
…		…
309		449
310	type = req->type;	450	type = req->type;
311		451
312	switch (type)	452	switch (type)
313	{	453	{
314	case REQ_READ: req->result = pread64 (req->fd, req->dataptr, req->length, req->offset); break;	454	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
315	case REQ_WRITE: req->result = pwrite64 (req->fd, req->dataptr, req->length, req->offset); break;	455	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
316	#if SYS_readahead	456
317	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	457	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
318	#else
319	case REQ_READAHEAD: req->result = -1; errno = ENOSYS; break;
320	#endif
321		458
322	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	459	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
323	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	460	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
324	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	461	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
325		462
326	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;	463	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
327	case REQ_CLOSE: req->result = close (req->fd); break;	464	case REQ_CLOSE: req->result = close (req->fd); break;
328	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	465	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
		466	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
		467	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
329		468
		469	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
330	case REQ_FSYNC: req->result = fsync (req->fd); break;	470	case REQ_FSYNC: req->result = fsync (req->fd); break;
331	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
332		471
333	case REQ_QUIT:	472	case REQ_QUIT:
334	break;	473	break;
335		474
336	default:	475	default:
…		…
362	while (type != REQ_QUIT);	501	while (type != REQ_QUIT);
363		502
364	return 0;	503	return 0;
365	}	504	}
366		505
		506	#define dREQ \
		507	aio_req req; \
		508	\
		509	if (SvOK (callback) && !SvROK (callback)) \
		510	croak ("clalback must be undef or of reference type"); \
		511	\
		512	Newz (0, req, 1, aio_cb); \
		513	if (!req) \
		514	croak ("out of memory during aio_req allocation"); \
		515	\
		516	req->callback = newSVsv (callback);
		517
367	MODULE = IO::AIO PACKAGE = IO::AIO	518	MODULE = IO::AIO PACKAGE = IO::AIO
368		519
		520	PROTOTYPES: ENABLE
		521
369	BOOT:	522	BOOT:
370	{	523	{
371	if (pipe (respipe))	524	create_pipe ();
372	croak ("unable to initialize result pipe");	525	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
373
374	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
375	croak ("cannot set result pipe to nonblocking mode");
376
377	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
378	croak ("cannot set result pipe to nonblocking mode");
379	}	526	}
380		527
381	void	528	void
382	min_parallel(nthreads)	529	min_parallel(nthreads)
383	int nthreads	530	int nthreads
384	PROTOTYPE: $	531	PROTOTYPE: $
385	CODE:
386	while (nthreads > started)
387	start_thread ();
388		532
389	void	533	void
390	max_parallel(nthreads)	534	max_parallel(nthreads)
391	int nthreads	535	int nthreads
392	PROTOTYPE: $	536	PROTOTYPE: $
393	CODE:
394	{
395	int cur = started;
396	while (cur > nthreads)
397	{
398	end_thread ();
399	cur--;
400	}
401
402	while (started > nthreads)
403	{
404	poll_wait ();
405	poll_cb (aTHX);
406	}
407	}
408		537
409	int	538	int
410	max_outstanding(nreqs)	539	max_outstanding(nreqs)
411	int nreqs	540	int nreqs
412	PROTOTYPE: $	541	PROTOTYPE: $
413	CODE:	542	CODE:
414	RETVAL = max_outstanding;	543	RETVAL = max_outstanding;
415	max_outstanding = nreqs;	544	max_outstanding = nreqs;
416		545
417	void	546	void
418	aio_open(pathname,flags,mode,callback)	547	aio_open(pathname,flags,mode,callback=&PL_sv_undef)
419	SV * pathname	548	SV * pathname
420	int flags	549	int flags
421	int mode	550	int mode
422	SV * callback	551	SV * callback
423	PROTOTYPE: $$$$	552	PROTOTYPE: $$$;$
424	CODE:	553	CODE:
425	{	554	{
426	aio_req req;	555	dREQ;
427
428	Newz (0, req, 1, aio_cb);
429
430	if (!req)
431	croak ("out of memory during aio_req allocation");
432		556
433	req->type = REQ_OPEN;	557	req->type = REQ_OPEN;
434	req->data = newSVsv (pathname);	558	req->data = newSVsv (pathname);
435	req->dataptr = SvPV_nolen (req->data);	559	req->dataptr = SvPVbyte_nolen (req->data);
436	req->fd = flags;	560	req->fd = flags;
437	req->mode = mode;	561	req->mode = mode;
438	req->callback = SvREFCNT_inc (callback);
439		562
440	send_req (req);	563	send_req (req);
441	}	564	}
442		565
443	void	566	void
444	aio_close(fh,callback)	567	aio_close(fh,callback=&PL_sv_undef)
445	InputStream fh	568	SV * fh
446	SV * callback	569	SV * callback
447	PROTOTYPE: $$	570	PROTOTYPE: $;$
448	ALIAS:	571	ALIAS:
449	aio_close = REQ_CLOSE	572	aio_close = REQ_CLOSE
450	aio_fsync = REQ_FSYNC	573	aio_fsync = REQ_FSYNC
451	aio_fdatasync = REQ_FDATASYNC	574	aio_fdatasync = REQ_FDATASYNC
452	CODE:	575	CODE:
453	{	576	{
		577	dREQ;
		578
		579	req->type = ix;
		580	req->fh = newSVsv (fh);
		581	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
		582
		583	send_req (req);
		584	}
		585
		586	void
		587	aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
		588	SV * fh
		589	UV offset
		590	IV length
		591	SV * data
		592	IV dataoffset
		593	SV * callback
		594	ALIAS:
		595	aio_read = REQ_READ
		596	aio_write = REQ_WRITE
		597	PROTOTYPE: $$$$$;$
		598	CODE:
		599	{
454	aio_req req;	600	aio_req req;
		601	STRLEN svlen;
		602	char *svptr = SvPVbyte (data, svlen);
455		603
456	Newz (0, req, 1, aio_cb);	604	SvUPGRADE (data, SVt_PV);
		605	SvPOK_on (data);
457		606
458	if (!req)	607	if (dataoffset < 0)
459	croak ("out of memory during aio_req allocation");	608	dataoffset += svlen;
460		609
461	req->type = ix;	610	if (dataoffset < 0 \|\| dataoffset > svlen)
462	req->fd = PerlIO_fileno (fh);	611	croak ("data offset outside of string");
463	req->callback = SvREFCNT_inc (callback);
464		612
465	send_req (req);	613	if (ix == REQ_WRITE)
466	}	614	{
467		615	/* write: check length and adjust. */
468	void	616	if (length < 0 \|\| length + dataoffset > svlen)
469	aio_read(fh,offset,length,data,dataoffset,callback)	617	length = svlen - dataoffset;
470	InputStream fh	618	}
471	UV offset	619	else
472	IV length	620	{
473	SV * data	621	/* read: grow scalar as necessary */
474	IV dataoffset	622	svptr = SvGROW (data, length + dataoffset);
475	SV * callback	623	}
476	PROTOTYPE: $$$$$$
477	CODE:
478	read_write (aTHX_ 0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
479
480	void
481	aio_write(fh,offset,length,data,dataoffset,callback)
482	OutputStream fh
483	UV offset
484	IV length
485	SV * data
486	IV dataoffset
487	SV * callback
488	PROTOTYPE: $$$$$$
489	CODE:
490	read_write (aTHX_ 1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
491
492	void
493	aio_readahead(fh,offset,length,callback)
494	InputStream fh
495	UV offset
496	IV length
497	SV * callback
498	PROTOTYPE: $$$$
499	CODE:
500	{
501	aio_req req;
502		624
503	if (length < 0)	625	if (length < 0)
504	croak ("length must not be negative");	626	croak ("length must not be negative");
505		627
506	Newz (0, req, 1, aio_cb);	628	{
		629	dREQ;
507		630
508	if (!req)	631	req->type = ix;
509	croak ("out of memory during aio_req allocation");	632	req->fh = newSVsv (fh);
		633	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
		634	: IoOFP (sv_2io (fh)));
		635	req->offset = offset;
		636	req->length = length;
		637	req->data = SvREFCNT_inc (data);
		638	req->dataptr = (char *)svptr + dataoffset;
		639
		640	if (!SvREADONLY (data))
		641	{
		642	SvREADONLY_on (data);
		643	req->data2ptr = (void *)data;
		644	}
		645
		646	send_req (req);
		647	}
		648	}
		649
		650	void
		651	aio_readahead(fh,offset,length,callback=&PL_sv_undef)
		652	SV * fh
		653	UV offset
		654	IV length
		655	SV * callback
		656	PROTOTYPE: $$$;$
		657	CODE:
		658	{
		659	dREQ;
510		660
511	req->type = REQ_READAHEAD;	661	req->type = REQ_READAHEAD;
		662	req->fh = newSVsv (fh);
512	req->fd = PerlIO_fileno (fh);	663	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
513	req->offset = offset;	664	req->offset = offset;
514	req->length = length;	665	req->length = length;
515	req->callback = SvREFCNT_inc (callback);
516		666
517	send_req (req);	667	send_req (req);
518	}	668	}
519		669
520	void	670	void
521	aio_stat(fh_or_path,callback)	671	aio_stat(fh_or_path,callback=&PL_sv_undef)
522	SV * fh_or_path	672	SV * fh_or_path
523	SV * callback	673	SV * callback
524	PROTOTYPE: $$
525	ALIAS:	674	ALIAS:
		675	aio_stat = REQ_STAT
526	aio_lstat = 1	676	aio_lstat = REQ_LSTAT
527	CODE:	677	CODE:
528	{	678	{
529	aio_req req;	679	dREQ;
530
531	Newz (0, req, 1, aio_cb);
532
533	if (!req)
534	croak ("out of memory during aio_req allocation");
535		680
536	New (0, req->statdata, 1, Stat_t);	681	New (0, req->statdata, 1, Stat_t);
537
538	if (!req->statdata)	682	if (!req->statdata)
		683	{
		684	free_req (req);
539	croak ("out of memory during aio_req->statdata allocation");	685	croak ("out of memory during aio_req->statdata allocation");
		686	}
540		687
541	if (SvPOK (fh_or_path))	688	if (SvPOK (fh_or_path))
542	{	689	{
543	req->type = ix ? REQ_LSTAT : REQ_STAT;	690	req->type = ix;
544	req->data = newSVsv (fh_or_path);	691	req->data = newSVsv (fh_or_path);
545	req->dataptr = SvPV_nolen (req->data);	692	req->dataptr = SvPVbyte_nolen (req->data);
546	}	693	}
547	else	694	else
548	{	695	{
549	req->type = REQ_FSTAT;	696	req->type = REQ_FSTAT;
		697	req->fh = newSVsv (fh_or_path);
550	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	698	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
551	}	699	}
552		700
553	req->callback = SvREFCNT_inc (callback);
554
555	send_req (req);	701	send_req (req);
556	}	702	}
557		703
558	void	704	void
559	aio_unlink(pathname,callback)	705	aio_unlink(pathname,callback=&PL_sv_undef)
560	SV * pathname	706	SV * pathname
561	SV * callback	707	SV * callback
562	PROTOTYPE: $$	708	ALIAS:
		709	aio_unlink = REQ_UNLINK
		710	aio_rmdir = REQ_RMDIR
563	CODE:	711	CODE:
564	{	712	{
565	aio_req req;	713	dREQ;
566		714
567	Newz (0, req, 1, aio_cb);	715	req->type = ix;
568
569	if (!req)
570	croak ("out of memory during aio_req allocation");
571
572	req->type = REQ_UNLINK;
573	req->data = newSVsv (pathname);	716	req->data = newSVsv (pathname);
574	req->dataptr = SvPV_nolen (req->data);	717	req->dataptr = SvPVbyte_nolen (req->data);
575	req->callback = SvREFCNT_inc (callback);
576		718
577	send_req (req);	719	send_req (req);
578	}	720	}
		721
		722	void
		723	aio_symlink(oldpath,newpath,callback=&PL_sv_undef)
		724	SV * oldpath
		725	SV * newpath
		726	SV * callback
		727	CODE:
		728	{
		729	dREQ;
		730
		731	req->type = REQ_SYMLINK;
		732	req->fh = newSVsv (oldpath);
		733	req->data2ptr = SvPVbyte_nolen (req->fh);
		734	req->data = newSVsv (newpath);
		735	req->dataptr = SvPVbyte_nolen (req->data);
		736
		737	send_req (req);
		738	}
		739
		740	void
		741	flush()
		742	PROTOTYPE:
		743	CODE:
		744	while (nreqs)
		745	{
		746	poll_wait ();
		747	poll_cb ();
		748	}
		749
		750	void
		751	poll()
		752	PROTOTYPE:
		753	CODE:
		754	if (nreqs)
		755	{
		756	poll_wait ();
		757	poll_cb ();
		758	}
579		759
580	int	760	int
581	poll_fileno()	761	poll_fileno()
582	PROTOTYPE:	762	PROTOTYPE:
583	CODE:	763	CODE:
…		…
587		767
588	int	768	int
589	poll_cb(...)	769	poll_cb(...)
590	PROTOTYPE:	770	PROTOTYPE:
591	CODE:	771	CODE:
592	RETVAL = poll_cb (aTHX);	772	RETVAL = poll_cb ();
593	OUTPUT:	773	OUTPUT:
594	RETVAL	774	RETVAL
595		775
596	void	776	void
597	poll_wait()	777	poll_wait()

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Comparing IO-AIO/AIO.xs (file contents): Revision 1.4 by root, Sun Jul 10 20:57:00 2005 UTC vs. Revision 1.29 by root, Wed Aug 17 06:12:10 2005 UTC

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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.4 by root, Sun Jul 10 20:57:00 2005 UTC vs.
Revision 1.29 by root, Wed Aug 17 06:12:10 2005 UTC