[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 1.31 by root, Thu Aug 18 16:34:53 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, wanted;
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	/* read any signals sent by the worker threads */
		122	char buf [32];
		123	while (read (respipe [0], buf, 32) == 32)
		124	;
		125
		126	rese = 0;
		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
…		…
192	}	221	}
193		222
194	static void	223	static void
195	send_req (aio_req req)	224	send_req (aio_req req)
196	{	225	{
		226	while (started < wanted && nreqs >= started)
		227	start_thread ();
		228
197	nreqs++;	229	nreqs++;
198		230
199	pthread_mutex_lock (&reqlock);	231	pthread_mutex_lock (&reqlock);
200		232
201	req->next = 0;	233	req->next = 0;
…		…
209	reqe = reqs = req;	241	reqe = reqs = req;
210		242
211	pthread_cond_signal (&reqwait);	243	pthread_cond_signal (&reqwait);
212	pthread_mutex_unlock (&reqlock);	244	pthread_mutex_unlock (&reqlock);
213		245
214	while (nreqs > max_outstanding)	246	if (nreqs > max_outstanding)
		247	for (;;)
		248	{
		249	poll_cb ();
		250
		251	if (nreqs <= max_outstanding)
		252	break;
		253
		254	poll_wait ();
		255	}
		256	}
		257
		258	static void
		259	end_thread (void)
		260	{
		261	aio_req req;
		262	Newz (0, req, 1, aio_cb);
		263	req->type = REQ_QUIT;
		264
		265	send_req (req);
		266	}
		267
		268	static void min_parallel (int nthreads)
		269	{
		270	if (wanted < nthreads)
		271	wanted = nthreads;
		272	}
		273
		274	static void max_parallel (int nthreads)
		275	{
		276	int cur = started;
		277
		278	if (wanted > nthreads)
		279	wanted = nthreads;
		280
		281	while (cur > wanted)
		282	{
		283	end_thread ();
		284	cur--;
		285	}
		286
		287	while (started > wanted)
215	{	288	{
216	poll_wait ();	289	poll_wait ();
217	poll_cb ();	290	poll_cb ();
218	}	291	}
219	}	292	}
220		293
221	static void	294	static void create_pipe ()
222	end_thread (void)
223	{	295	{
		296	if (pipe (respipe))
		297	croak ("unable to initialize result pipe");
		298
		299	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
		300	croak ("cannot set result pipe to nonblocking mode");
		301
		302	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
		303	croak ("cannot set result pipe to nonblocking mode");
		304	}
		305
		306	static void atfork_prepare (void)
		307	{
		308	pthread_mutex_lock (&reqlock);
		309	pthread_mutex_lock (&reslock);
		310	}
		311
		312	static void atfork_parent (void)
		313	{
		314	pthread_mutex_unlock (&reslock);
		315	pthread_mutex_unlock (&reqlock);
		316	}
		317
		318	static void atfork_child (void)
		319	{
224	aio_req req;	320	aio_req prv;
225	New (0, req, 1, aio_cb);
226	req->type = REQ_QUIT;
227		321
228	send_req (req);	322	started = 0;
229	}
230		323
231	static void	324	while (reqs)
232	read_write (pTHX_	325	{
233	int dowrite, int fd, off_t offset, size_t length,	326	prv = reqs;
234	SV data, STRLEN dataoffset, SV callback)	327	reqs = prv->next;
235	{	328	free_req (prv);
236	aio_req req;	329	}
237	STRLEN svlen;
238	char *svptr = SvPV (data, svlen);
239		330
240	SvUPGRADE (data, SVt_PV);	331	reqs = reqe = 0;
241	SvPOK_on (data);	332
		333	while (ress)
		334	{
		335	prv = ress;
		336	ress = prv->next;
		337	free_req (prv);
		338	}
		339
		340	ress = rese = 0;
242		341
243	if (dataoffset < 0)	342	close (respipe [0]);
		343	close (respipe [1]);
		344	create_pipe ();
		345
		346	atfork_parent ();
		347	}
		348
		349	/*****************************************************************************/
		350	/* work around various missing functions */
		351
		352	#if !HAVE_PREADWRITE
		353	# define pread aio_pread
		354	# define pwrite aio_pwrite
		355
		356	/*
		357	* make our pread/pwrite safe against themselves, but not against
		358	* normal read/write by using a mutex. slows down execution a lot,
		359	* but that's your problem, not mine.
		360	*/
		361	static pthread_mutex_t iolock = PTHREAD_MUTEX_INITIALIZER;
		362
		363	static ssize_t
		364	pread (int fd, void *buf, size_t count, off_t offset)
		365	{
		366	ssize_t res;
		367	off_t ooffset;
		368
		369	pthread_mutex_lock (&iolock);
		370	ooffset = lseek (fd, 0, SEEK_CUR);
		371	lseek (fd, offset, SEEK_SET);
		372	res = read (fd, buf, count);
		373	lseek (fd, ooffset, SEEK_SET);
		374	pthread_mutex_unlock (&iolock);
		375
		376	return res;
		377	}
		378
		379	static ssize_t
		380	pwrite (int fd, void *buf, size_t count, off_t offset)
		381	{
		382	ssize_t res;
		383	off_t ooffset;
		384
		385	pthread_mutex_lock (&iolock);
		386	ooffset = lseek (fd, 0, SEEK_CUR);
		387	lseek (fd, offset, SEEK_SET);
		388	res = write (fd, buf, count);
		389	lseek (fd, offset, SEEK_SET);
		390	pthread_mutex_unlock (&iolock);
		391
		392	return res;
		393	}
		394	#endif
		395
		396	#if !HAVE_FDATASYNC
		397	# define fdatasync fsync
		398	#endif
		399
		400	#if !HAVE_READAHEAD
		401	# define readahead aio_readahead
		402
		403	static char readahead_buf[4096];
		404
		405	static ssize_t
		406	readahead (int fd, off_t offset, size_t count)
		407	{
		408	while (count > 0)
		409	{
		410	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
		411
		412	pread (fd, readahead_buf, len, offset);
244	dataoffset += svlen;	413	offset += len;
245		414	count -= len;
246	if (dataoffset < 0 \|\| dataoffset > svlen)
247	croak ("data offset outside of string");
248
249	if (dowrite)
250	{	415	}
251	/* write: check length and adjust. */
252	if (length < 0 \|\| length + dataoffset > svlen)
253	length = svlen - dataoffset;
254	}
255	else
256	{
257	/* read: grow scalar as necessary */
258	svptr = SvGROW (data, length + dataoffset);
259	}
260		416
261	if (length < 0)	417	errno = 0;
262	croak ("length must not be negative");
263
264	Newz (0, req, 1, aio_cb);
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	}	418	}
		419	#endif
		420
		421	/*****************************************************************************/
279		422
280	static void *	423	static void *
281	aio_proc (void *thr_arg)	424	aio_proc (void *thr_arg)
282	{	425	{
283	aio_req req;	426	aio_req req;
…		…
309		452
310	type = req->type;	453	type = req->type;
311		454
312	switch (type)	455	switch (type)
313	{	456	{
314	case REQ_READ: req->result = pread64 (req->fd, req->dataptr, req->length, req->offset); break;	457	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;	458	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
316	#if SYS_readahead	459
317	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	460	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		461
322	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	462	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
323	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	463	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
324	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	464	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
325		465
326	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;	466	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
327	case REQ_CLOSE: req->result = close (req->fd); break;	467	case REQ_CLOSE: req->result = close (req->fd); break;
328	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	468	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
		469	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
		470	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
329		471
		472	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
330	case REQ_FSYNC: req->result = fsync (req->fd); break;	473	case REQ_FSYNC: req->result = fsync (req->fd); break;
331	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
332		474
333	case REQ_QUIT:	475	case REQ_QUIT:
334	break;	476	break;
335		477
336	default:	478	default:
…		…
362	while (type != REQ_QUIT);	504	while (type != REQ_QUIT);
363		505
364	return 0;	506	return 0;
365	}	507	}
366		508
		509	#define dREQ \
		510	aio_req req; \
		511	\
		512	if (SvOK (callback) && !SvROK (callback)) \
		513	croak ("clalback must be undef or of reference type"); \
		514	\
		515	Newz (0, req, 1, aio_cb); \
		516	if (!req) \
		517	croak ("out of memory during aio_req allocation"); \
		518	\
		519	req->callback = newSVsv (callback);
		520
367	MODULE = IO::AIO PACKAGE = IO::AIO	521	MODULE = IO::AIO PACKAGE = IO::AIO
368		522
		523	PROTOTYPES: ENABLE
		524
369	BOOT:	525	BOOT:
370	{	526	{
371	if (pipe (respipe))	527	create_pipe ();
372	croak ("unable to initialize result pipe");	528	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	}	529	}
380		530
381	void	531	void
382	min_parallel(nthreads)	532	min_parallel(nthreads)
383	int nthreads	533	int nthreads
384	PROTOTYPE: $	534	PROTOTYPE: $
385	CODE:
386	while (nthreads > started)
387	start_thread ();
388		535
389	void	536	void
390	max_parallel(nthreads)	537	max_parallel(nthreads)
391	int nthreads	538	int nthreads
392	PROTOTYPE: $	539	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		540
409	int	541	int
410	max_outstanding(nreqs)	542	max_outstanding(nreqs)
411	int nreqs	543	int nreqs
412	PROTOTYPE: $	544	PROTOTYPE: $
413	CODE:	545	CODE:
414	RETVAL = max_outstanding;	546	RETVAL = max_outstanding;
415	max_outstanding = nreqs;	547	max_outstanding = nreqs;
416		548
417	void	549	void
418	aio_open(pathname,flags,mode,callback)	550	aio_open(pathname,flags,mode,callback=&PL_sv_undef)
419	SV * pathname	551	SV * pathname
420	int flags	552	int flags
421	int mode	553	int mode
422	SV * callback	554	SV * callback
423	PROTOTYPE: $$$$	555	PROTOTYPE: $$$;$
424	CODE:	556	CODE:
425	{	557	{
426	aio_req req;	558	dREQ;
427
428	Newz (0, req, 1, aio_cb);
429
430	if (!req)
431	croak ("out of memory during aio_req allocation");
432		559
433	req->type = REQ_OPEN;	560	req->type = REQ_OPEN;
434	req->data = newSVsv (pathname);	561	req->data = newSVsv (pathname);
435	req->dataptr = SvPV_nolen (req->data);	562	req->dataptr = SvPVbyte_nolen (req->data);
436	req->fd = flags;	563	req->fd = flags;
437	req->mode = mode;	564	req->mode = mode;
438	req->callback = SvREFCNT_inc (callback);
439		565
440	send_req (req);	566	send_req (req);
441	}	567	}
442		568
443	void	569	void
444	aio_close(fh,callback)	570	aio_close(fh,callback=&PL_sv_undef)
445	InputStream fh	571	SV * fh
446	SV * callback	572	SV * callback
447	PROTOTYPE: $$	573	PROTOTYPE: $;$
448	ALIAS:	574	ALIAS:
449	aio_close = REQ_CLOSE	575	aio_close = REQ_CLOSE
450	aio_fsync = REQ_FSYNC	576	aio_fsync = REQ_FSYNC
451	aio_fdatasync = REQ_FDATASYNC	577	aio_fdatasync = REQ_FDATASYNC
452	CODE:	578	CODE:
453	{	579	{
		580	dREQ;
		581
		582	req->type = ix;
		583	req->fh = newSVsv (fh);
		584	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
		585
		586	send_req (req);
		587	}
		588
		589	void
		590	aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
		591	SV * fh
		592	UV offset
		593	IV length
		594	SV * data
		595	IV dataoffset
		596	SV * callback
		597	ALIAS:
		598	aio_read = REQ_READ
		599	aio_write = REQ_WRITE
		600	PROTOTYPE: $$$$$;$
		601	CODE:
		602	{
454	aio_req req;	603	aio_req req;
		604	STRLEN svlen;
		605	char *svptr = SvPVbyte (data, svlen);
455		606
456	Newz (0, req, 1, aio_cb);	607	SvUPGRADE (data, SVt_PV);
		608	SvPOK_on (data);
457		609
458	if (!req)	610	if (dataoffset < 0)
459	croak ("out of memory during aio_req allocation");	611	dataoffset += svlen;
460		612
461	req->type = ix;	613	if (dataoffset < 0 \|\| dataoffset > svlen)
462	req->fd = PerlIO_fileno (fh);	614	croak ("data offset outside of string");
463	req->callback = SvREFCNT_inc (callback);
464		615
465	send_req (req);	616	if (ix == REQ_WRITE)
466	}	617	{
467		618	/* write: check length and adjust. */
468	void	619	if (length < 0 \|\| length + dataoffset > svlen)
469	aio_read(fh,offset,length,data,dataoffset,callback)	620	length = svlen - dataoffset;
470	InputStream fh	621	}
471	UV offset	622	else
472	IV length	623	{
473	SV * data	624	/* read: grow scalar as necessary */
474	IV dataoffset	625	svptr = SvGROW (data, length + dataoffset);
475	SV * callback	626	}
476	PROTOTYPE: $$$$$$
477	CODE:
478	read_write (aTHX_ 0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
479
480	void
481	aio_write(fh,offset,length,data,dataoffset,callback)
482	OutputStream fh
483	UV offset
484	IV length
485	SV * data
486	IV dataoffset
487	SV * callback
488	PROTOTYPE: $$$$$$
489	CODE:
490	read_write (aTHX_ 1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
491
492	void
493	aio_readahead(fh,offset,length,callback)
494	InputStream fh
495	UV offset
496	IV length
497	SV * callback
498	PROTOTYPE: $$$$
499	CODE:
500	{
501	aio_req req;
502		627
503	if (length < 0)	628	if (length < 0)
504	croak ("length must not be negative");	629	croak ("length must not be negative");
505		630
506	Newz (0, req, 1, aio_cb);	631	{
		632	dREQ;
507		633
508	if (!req)	634	req->type = ix;
509	croak ("out of memory during aio_req allocation");	635	req->fh = newSVsv (fh);
		636	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
		637	: IoOFP (sv_2io (fh)));
		638	req->offset = offset;
		639	req->length = length;
		640	req->data = SvREFCNT_inc (data);
		641	req->dataptr = (char *)svptr + dataoffset;
		642
		643	if (!SvREADONLY (data))
		644	{
		645	SvREADONLY_on (data);
		646	req->data2ptr = (void *)data;
		647	}
		648
		649	send_req (req);
		650	}
		651	}
		652
		653	void
		654	aio_readahead(fh,offset,length,callback=&PL_sv_undef)
		655	SV * fh
		656	UV offset
		657	IV length
		658	SV * callback
		659	PROTOTYPE: $$$;$
		660	CODE:
		661	{
		662	dREQ;
510		663
511	req->type = REQ_READAHEAD;	664	req->type = REQ_READAHEAD;
		665	req->fh = newSVsv (fh);
512	req->fd = PerlIO_fileno (fh);	666	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
513	req->offset = offset;	667	req->offset = offset;
514	req->length = length;	668	req->length = length;
515	req->callback = SvREFCNT_inc (callback);
516		669
517	send_req (req);	670	send_req (req);
518	}	671	}
519		672
520	void	673	void
521	aio_stat(fh_or_path,callback)	674	aio_stat(fh_or_path,callback=&PL_sv_undef)
522	SV * fh_or_path	675	SV * fh_or_path
523	SV * callback	676	SV * callback
524	PROTOTYPE: $$
525	ALIAS:	677	ALIAS:
		678	aio_stat = REQ_STAT
526	aio_lstat = 1	679	aio_lstat = REQ_LSTAT
527	CODE:	680	CODE:
528	{	681	{
529	aio_req req;	682	dREQ;
530
531	Newz (0, req, 1, aio_cb);
532
533	if (!req)
534	croak ("out of memory during aio_req allocation");
535		683
536	New (0, req->statdata, 1, Stat_t);	684	New (0, req->statdata, 1, Stat_t);
537
538	if (!req->statdata)	685	if (!req->statdata)
		686	{
		687	free_req (req);
539	croak ("out of memory during aio_req->statdata allocation");	688	croak ("out of memory during aio_req->statdata allocation");
		689	}
540		690
541	if (SvPOK (fh_or_path))	691	if (SvPOK (fh_or_path))
542	{	692	{
543	req->type = ix ? REQ_LSTAT : REQ_STAT;	693	req->type = ix;
544	req->data = newSVsv (fh_or_path);	694	req->data = newSVsv (fh_or_path);
545	req->dataptr = SvPV_nolen (req->data);	695	req->dataptr = SvPVbyte_nolen (req->data);
546	}	696	}
547	else	697	else
548	{	698	{
549	req->type = REQ_FSTAT;	699	req->type = REQ_FSTAT;
		700	req->fh = newSVsv (fh_or_path);
550	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	701	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
551	}	702	}
552		703
553	req->callback = SvREFCNT_inc (callback);
554
555	send_req (req);	704	send_req (req);
556	}	705	}
557		706
558	void	707	void
559	aio_unlink(pathname,callback)	708	aio_unlink(pathname,callback=&PL_sv_undef)
560	SV * pathname	709	SV * pathname
561	SV * callback	710	SV * callback
562	PROTOTYPE: $$	711	ALIAS:
		712	aio_unlink = REQ_UNLINK
		713	aio_rmdir = REQ_RMDIR
563	CODE:	714	CODE:
564	{	715	{
565	aio_req req;	716	dREQ;
566		717
567	Newz (0, req, 1, aio_cb);	718	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);	719	req->data = newSVsv (pathname);
574	req->dataptr = SvPV_nolen (req->data);	720	req->dataptr = SvPVbyte_nolen (req->data);
575	req->callback = SvREFCNT_inc (callback);
576		721
577	send_req (req);	722	send_req (req);
578	}	723	}
		724
		725	void
		726	aio_symlink(oldpath,newpath,callback=&PL_sv_undef)
		727	SV * oldpath
		728	SV * newpath
		729	SV * callback
		730	CODE:
		731	{
		732	dREQ;
		733
		734	req->type = REQ_SYMLINK;
		735	req->fh = newSVsv (oldpath);
		736	req->data2ptr = SvPVbyte_nolen (req->fh);
		737	req->data = newSVsv (newpath);
		738	req->dataptr = SvPVbyte_nolen (req->data);
		739
		740	send_req (req);
		741	}
		742
		743	void
		744	flush()
		745	PROTOTYPE:
		746	CODE:
		747	while (nreqs)
		748	{
		749	poll_wait ();
		750	poll_cb ();
		751	}
		752
		753	void
		754	poll()
		755	PROTOTYPE:
		756	CODE:
		757	if (nreqs)
		758	{
		759	poll_wait ();
		760	poll_cb ();
		761	}
579		762
580	int	763	int
581	poll_fileno()	764	poll_fileno()
582	PROTOTYPE:	765	PROTOTYPE:
583	CODE:	766	CODE:
…		…
587		770
588	int	771	int
589	poll_cb(...)	772	poll_cb(...)
590	PROTOTYPE:	773	PROTOTYPE:
591	CODE:	774	CODE:
592	RETVAL = poll_cb (aTHX);	775	RETVAL = poll_cb ();
593	OUTPUT:	776	OUTPUT:
594	RETVAL	777	RETVAL
595		778
596	void	779	void
597	poll_wait()	780	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 1.31 by root, Thu Aug 18 16:34:53 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 1.31 by root, Thu Aug 18 16:34:53 2005 UTC