[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 1.28 by root, Wed Aug 17 05:06:59 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	atfork_parent ();
		338
		339	min_parallel (restart);
		340	}
		341
		342	/*****************************************************************************/
		343	/* work around various missing functions */
		344
		345	#if !HAVE_PREADWRITE
		346	# define pread aio_pread
		347	# define pwrite aio_pwrite
		348
		349	/*
		350	* make our pread/pwrite safe against themselves, but not against
		351	* normal read/write by using a mutex. slows down execution a lot,
		352	* but that's your problem, not mine.
		353	*/
		354	static pthread_mutex_t iolock = PTHREAD_MUTEX_INITIALIZER;
		355
		356	static ssize_t
		357	pread (int fd, void *buf, size_t count, off_t offset)
		358	{
		359	ssize_t res;
		360	off_t ooffset;
		361
		362	pthread_mutex_lock (&iolock);
		363	ooffset = lseek (fd, 0, SEEK_CUR);
		364	lseek (fd, offset, SEEK_SET);
		365	res = read (fd, buf, count);
		366	lseek (fd, ooffset, SEEK_SET);
		367	pthread_mutex_unlock (&iolock);
		368
		369	return res;
		370	}
		371
		372	static ssize_t
		373	pwrite (int fd, void *buf, size_t count, off_t offset)
		374	{
		375	ssize_t res;
		376	off_t ooffset;
		377
		378	pthread_mutex_lock (&iolock);
		379	ooffset = lseek (fd, 0, SEEK_CUR);
		380	lseek (fd, offset, SEEK_SET);
		381	res = write (fd, buf, count);
		382	lseek (fd, offset, SEEK_SET);
		383	pthread_mutex_unlock (&iolock);
		384
		385	return res;
		386	}
		387	#endif
		388
		389	#if !HAVE_FDATASYNC
		390	# define fdatasync fsync
		391	#endif
		392
		393	#if !HAVE_READAHEAD
		394	# define readahead aio_readahead
		395
		396	static char readahead_buf[4096];
		397
		398	static ssize_t
		399	readahead (int fd, off_t offset, size_t count)
		400	{
		401	while (count > 0)
259	}	402	{
		403	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
260		404
261	if (length < 0)	405	pread (fd, readahead_buf, len, offset);
262	croak ("length must not be negative");	406	offset += len;
		407	count -= len;
		408	}
263		409
264	Newz (0, req, 1, aio_cb);	410	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	}	411	}
		412	#endif
		413
		414	/*****************************************************************************/
279		415
280	static void *	416	static void *
281	aio_proc (void *thr_arg)	417	aio_proc (void *thr_arg)
282	{	418	{
283	aio_req req;	419	aio_req req;
…		…
309		445
310	type = req->type;	446	type = req->type;
311		447
312	switch (type)	448	switch (type)
313	{	449	{
314	case REQ_READ: req->result = pread64 (req->fd, req->dataptr, req->length, req->offset); break;	450	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;	451	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
316	#if SYS_readahead	452
317	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	453	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		454
322	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	455	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
323	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	456	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
324	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	457	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
325		458
326	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;	459	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
327	case REQ_CLOSE: req->result = close (req->fd); break;	460	case REQ_CLOSE: req->result = close (req->fd); break;
328	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	461	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
		462	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
		463	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
329		464
		465	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
330	case REQ_FSYNC: req->result = fsync (req->fd); break;	466	case REQ_FSYNC: req->result = fsync (req->fd); break;
331	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
332		467
333	case REQ_QUIT:	468	case REQ_QUIT:
334	break;	469	break;
335		470
336	default:	471	default:
…		…
362	while (type != REQ_QUIT);	497	while (type != REQ_QUIT);
363		498
364	return 0;	499	return 0;
365	}	500	}
366		501
		502	#define dREQ \
		503	aio_req req; \
		504	\
		505	if (SvOK (callback) && !SvROK (callback)) \
		506	croak ("clalback must be undef or of reference type"); \
		507	\
		508	Newz (0, req, 1, aio_cb); \
		509	if (!req) \
		510	croak ("out of memory during aio_req allocation"); \
		511	\
		512	req->callback = newSVsv (callback);
		513
367	MODULE = IO::AIO PACKAGE = IO::AIO	514	MODULE = IO::AIO PACKAGE = IO::AIO
368		515
		516	PROTOTYPES: ENABLE
		517
369	BOOT:	518	BOOT:
370	{	519	{
371	if (pipe (respipe))	520	create_pipe ();
372	croak ("unable to initialize result pipe");	521	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	}	522	}
380		523
381	void	524	void
382	min_parallel(nthreads)	525	min_parallel(nthreads)
383	int nthreads	526	int nthreads
384	PROTOTYPE: $	527	PROTOTYPE: $
385	CODE:
386	while (nthreads > started)
387	start_thread ();
388		528
389	void	529	void
390	max_parallel(nthreads)	530	max_parallel(nthreads)
391	int nthreads	531	int nthreads
392	PROTOTYPE: $	532	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		533
409	int	534	int
410	max_outstanding(nreqs)	535	max_outstanding(nreqs)
411	int nreqs	536	int nreqs
412	PROTOTYPE: $	537	PROTOTYPE: $
413	CODE:	538	CODE:
414	RETVAL = max_outstanding;	539	RETVAL = max_outstanding;
415	max_outstanding = nreqs;	540	max_outstanding = nreqs;
416		541
417	void	542	void
418	aio_open(pathname,flags,mode,callback)	543	aio_open(pathname,flags,mode,callback=&PL_sv_undef)
419	SV * pathname	544	SV * pathname
420	int flags	545	int flags
421	int mode	546	int mode
422	SV * callback	547	SV * callback
423	PROTOTYPE: $$$$	548	PROTOTYPE: $$$;$
424	CODE:	549	CODE:
425	{	550	{
426	aio_req req;	551	dREQ;
427
428	Newz (0, req, 1, aio_cb);
429
430	if (!req)
431	croak ("out of memory during aio_req allocation");
432		552
433	req->type = REQ_OPEN;	553	req->type = REQ_OPEN;
434	req->data = newSVsv (pathname);	554	req->data = newSVsv (pathname);
435	req->dataptr = SvPV_nolen (req->data);	555	req->dataptr = SvPVbyte_nolen (req->data);
436	req->fd = flags;	556	req->fd = flags;
437	req->mode = mode;	557	req->mode = mode;
438	req->callback = SvREFCNT_inc (callback);
439		558
440	send_req (req);	559	send_req (req);
441	}	560	}
442		561
443	void	562	void
444	aio_close(fh,callback)	563	aio_close(fh,callback=&PL_sv_undef)
445	InputStream fh	564	SV * fh
446	SV * callback	565	SV * callback
447	PROTOTYPE: $$	566	PROTOTYPE: $;$
448	ALIAS:	567	ALIAS:
449	aio_close = REQ_CLOSE	568	aio_close = REQ_CLOSE
450	aio_fsync = REQ_FSYNC	569	aio_fsync = REQ_FSYNC
451	aio_fdatasync = REQ_FDATASYNC	570	aio_fdatasync = REQ_FDATASYNC
452	CODE:	571	CODE:
453	{	572	{
		573	dREQ;
		574
		575	req->type = ix;
		576	req->fh = newSVsv (fh);
		577	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
		578
		579	send_req (req);
		580	}
		581
		582	void
		583	aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
		584	SV * fh
		585	UV offset
		586	IV length
		587	SV * data
		588	IV dataoffset
		589	SV * callback
		590	ALIAS:
		591	aio_read = REQ_READ
		592	aio_write = REQ_WRITE
		593	PROTOTYPE: $$$$$;$
		594	CODE:
		595	{
454	aio_req req;	596	aio_req req;
		597	STRLEN svlen;
		598	char *svptr = SvPVbyte (data, svlen);
455		599
456	Newz (0, req, 1, aio_cb);	600	SvUPGRADE (data, SVt_PV);
		601	SvPOK_on (data);
457		602
458	if (!req)	603	if (dataoffset < 0)
459	croak ("out of memory during aio_req allocation");	604	dataoffset += svlen;
460		605
461	req->type = ix;	606	if (dataoffset < 0 \|\| dataoffset > svlen)
462	req->fd = PerlIO_fileno (fh);	607	croak ("data offset outside of string");
463	req->callback = SvREFCNT_inc (callback);
464		608
465	send_req (req);	609	if (ix == REQ_WRITE)
466	}	610	{
467		611	/* write: check length and adjust. */
468	void	612	if (length < 0 \|\| length + dataoffset > svlen)
469	aio_read(fh,offset,length,data,dataoffset,callback)	613	length = svlen - dataoffset;
470	InputStream fh	614	}
471	UV offset	615	else
472	IV length	616	{
473	SV * data	617	/* read: grow scalar as necessary */
474	IV dataoffset	618	svptr = SvGROW (data, length + dataoffset);
475	SV * callback	619	}
476	PROTOTYPE: $$$$$$
477	CODE:
478	read_write (aTHX_ 0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
479
480	void
481	aio_write(fh,offset,length,data,dataoffset,callback)
482	OutputStream fh
483	UV offset
484	IV length
485	SV * data
486	IV dataoffset
487	SV * callback
488	PROTOTYPE: $$$$$$
489	CODE:
490	read_write (aTHX_ 1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
491
492	void
493	aio_readahead(fh,offset,length,callback)
494	InputStream fh
495	UV offset
496	IV length
497	SV * callback
498	PROTOTYPE: $$$$
499	CODE:
500	{
501	aio_req req;
502		620
503	if (length < 0)	621	if (length < 0)
504	croak ("length must not be negative");	622	croak ("length must not be negative");
505		623
506	Newz (0, req, 1, aio_cb);	624	{
		625	dREQ;
507		626
508	if (!req)	627	req->type = ix;
509	croak ("out of memory during aio_req allocation");	628	req->fh = newSVsv (fh);
		629	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
		630	: IoOFP (sv_2io (fh)));
		631	req->offset = offset;
		632	req->length = length;
		633	req->data = SvREFCNT_inc (data);
		634	req->dataptr = (char *)svptr + dataoffset;
		635
		636	if (!SvREADONLY (data))
		637	{
		638	SvREADONLY_on (data);
		639	req->data2ptr = (void *)data;
		640	}
		641
		642	send_req (req);
		643	}
		644	}
		645
		646	void
		647	aio_readahead(fh,offset,length,callback=&PL_sv_undef)
		648	SV * fh
		649	UV offset
		650	IV length
		651	SV * callback
		652	PROTOTYPE: $$$;$
		653	CODE:
		654	{
		655	dREQ;
510		656
511	req->type = REQ_READAHEAD;	657	req->type = REQ_READAHEAD;
		658	req->fh = newSVsv (fh);
512	req->fd = PerlIO_fileno (fh);	659	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
513	req->offset = offset;	660	req->offset = offset;
514	req->length = length;	661	req->length = length;
515	req->callback = SvREFCNT_inc (callback);
516		662
517	send_req (req);	663	send_req (req);
518	}	664	}
519		665
520	void	666	void
521	aio_stat(fh_or_path,callback)	667	aio_stat(fh_or_path,callback=&PL_sv_undef)
522	SV * fh_or_path	668	SV * fh_or_path
523	SV * callback	669	SV * callback
524	PROTOTYPE: $$
525	ALIAS:	670	ALIAS:
		671	aio_stat = REQ_STAT
526	aio_lstat = 1	672	aio_lstat = REQ_LSTAT
527	CODE:	673	CODE:
528	{	674	{
529	aio_req req;	675	dREQ;
530
531	Newz (0, req, 1, aio_cb);
532
533	if (!req)
534	croak ("out of memory during aio_req allocation");
535		676
536	New (0, req->statdata, 1, Stat_t);	677	New (0, req->statdata, 1, Stat_t);
537
538	if (!req->statdata)	678	if (!req->statdata)
		679	{
		680	free_req (req);
539	croak ("out of memory during aio_req->statdata allocation");	681	croak ("out of memory during aio_req->statdata allocation");
		682	}
540		683
541	if (SvPOK (fh_or_path))	684	if (SvPOK (fh_or_path))
542	{	685	{
543	req->type = ix ? REQ_LSTAT : REQ_STAT;	686	req->type = ix;
544	req->data = newSVsv (fh_or_path);	687	req->data = newSVsv (fh_or_path);
545	req->dataptr = SvPV_nolen (req->data);	688	req->dataptr = SvPVbyte_nolen (req->data);
546	}	689	}
547	else	690	else
548	{	691	{
549	req->type = REQ_FSTAT;	692	req->type = REQ_FSTAT;
		693	req->fh = newSVsv (fh_or_path);
550	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	694	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
551	}	695	}
552		696
553	req->callback = SvREFCNT_inc (callback);
554
555	send_req (req);	697	send_req (req);
556	}	698	}
557		699
558	void	700	void
559	aio_unlink(pathname,callback)	701	aio_unlink(pathname,callback=&PL_sv_undef)
560	SV * pathname	702	SV * pathname
561	SV * callback	703	SV * callback
562	PROTOTYPE: $$	704	ALIAS:
		705	aio_unlink = REQ_UNLINK
		706	aio_rmdir = REQ_RMDIR
563	CODE:	707	CODE:
564	{	708	{
565	aio_req req;	709	dREQ;
566		710
567	Newz (0, req, 1, aio_cb);	711	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);	712	req->data = newSVsv (pathname);
574	req->dataptr = SvPV_nolen (req->data);	713	req->dataptr = SvPVbyte_nolen (req->data);
575	req->callback = SvREFCNT_inc (callback);
576		714
577	send_req (req);	715	send_req (req);
578	}	716	}
		717
		718	void
		719	aio_symlink(oldpath,newpath,callback=&PL_sv_undef)
		720	SV * oldpath
		721	SV * newpath
		722	SV * callback
		723	CODE:
		724	{
		725	dREQ;
		726
		727	req->type = REQ_SYMLINK;
		728	req->fh = newSVsv (oldpath);
		729	req->data2ptr = SvPVbyte_nolen (req->fh);
		730	req->data = newSVsv (newpath);
		731	req->dataptr = SvPVbyte_nolen (req->data);
		732
		733	send_req (req);
		734	}
		735
		736	void
		737	flush()
		738	PROTOTYPE:
		739	CODE:
		740	while (nreqs)
		741	{
		742	poll_wait ();
		743	poll_cb ();
		744	}
		745
		746	void
		747	poll()
		748	PROTOTYPE:
		749	CODE:
		750	if (nreqs)
		751	{
		752	poll_wait ();
		753	poll_cb ();
		754	}
579		755
580	int	756	int
581	poll_fileno()	757	poll_fileno()
582	PROTOTYPE:	758	PROTOTYPE:
583	CODE:	759	CODE:
…		…
587		763
588	int	764	int
589	poll_cb(...)	765	poll_cb(...)
590	PROTOTYPE:	766	PROTOTYPE:
591	CODE:	767	CODE:
592	RETVAL = poll_cb (aTHX);	768	RETVAL = poll_cb ();
593	OUTPUT:	769	OUTPUT:
594	RETVAL	770	RETVAL
595		771
596	void	772	void
597	poll_wait()	773	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 1.28 by root, Wed Aug 17 05:06:59 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 1.28 by root, Wed Aug 17 05:06:59 2005 UTC