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

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.10 by root, Wed Jul 13 00:13:09 2005 UTC vs.
Revision 1.31 by root, Thu Aug 18 16:34:53 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
5	#define _XOPEN_SOURCE 500	8	#include "autoconf/config.h"
6		9
7	#include <sys/types.h>	10	#include <sys/types.h>
8	#include <sys/stat.h>	11	#include <sys/stat.h>
9		12
10	#include <unistd.h>	13	#include <unistd.h>
11	#include <fcntl.h>	14	#include <fcntl.h>
12	#include <signal.h>	15	#include <signal.h>
13	#include <sched.h>	16	#include <sched.h>
14	#if __linux
15	#include <sys/syscall.h>
16	#endif
17		17
18	#include <pthread.h>	18	#include <pthread.h>
19		19
20	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 ;) */
21	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 ;) */
29		29
30	enum {	30	enum {
31	REQ_QUIT,	31	REQ_QUIT,
32	REQ_OPEN, REQ_CLOSE,	32	REQ_OPEN, REQ_CLOSE,
33	REQ_READ, REQ_WRITE, REQ_READAHEAD,	33	REQ_READ, REQ_WRITE, REQ_READAHEAD,
34	REQ_STAT, REQ_LSTAT, REQ_FSTAT, REQ_UNLINK,	34	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
35	REQ_FSYNC, REQ_FDATASYNC,	35	REQ_FSYNC, REQ_FDATASYNC,
		36	REQ_UNLINK, REQ_RMDIR,
		37	REQ_SYMLINK,
36	};	38	};
37		39
38	typedef struct aio_cb {	40	typedef struct aio_cb {
39	struct aio_cb *volatile next;	41	struct aio_cb *volatile next;
40		42
…		…
44	off_t offset;	46	off_t offset;
45	size_t length;	47	size_t length;
46	ssize_t result;	48	ssize_t result;
47	mode_t mode; /* open */	49	mode_t mode; /* open */
48	int errorno;	50	int errorno;
49	SV data, callback;	51	SV data, callback, *fh;
50	void *dataptr;	52	void dataptr, data2ptr;
51	STRLEN dataoffset;	53	STRLEN dataoffset;
52		54
53	Stat_t *statdata;	55	Stat_t *statdata;
54	} aio_cb;	56	} aio_cb;
55		57
56	typedef aio_cb *aio_req;	58	typedef aio_cb *aio_req;
57		59
58	static int started;	60	static int started, wanted;
59	static int nreqs;	61	static volatile int nreqs;
60	static int max_outstanding = 1<<30;	62	static int max_outstanding = 1<<30;
61	static int respipe [2];	63	static int respipe [2];
62		64
63	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	65	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;
64	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;	66	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
65	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	67	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
66		68
67	static volatile aio_req reqs, reqe; /* queue start, queue end */	69	static volatile aio_req reqs, reqe; /* queue start, queue end */
68	static volatile aio_req ress, rese; /* queue start, queue end */	70	static volatile aio_req ress, rese; /* queue start, queue end */
69		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
70	static void	89	static void
71	poll_wait ()	90	poll_wait ()
72	{	91	{
73	if (!nreqs)	92	if (nreqs && !ress)
74	return;	93	{
75
76	fd_set rfd;	94	fd_set rfd;
77	FD_ZERO(&rfd);	95	FD_ZERO(&rfd);
78	FD_SET(respipe [0], &rfd);	96	FD_SET(respipe [0], &rfd);
79		97
80	select (respipe [0] + 1, &rfd, 0, 0, 0);	98	select (respipe [0] + 1, &rfd, 0, 0, 0);
		99	}
81	}	100	}
82		101
83	static int	102	static int
84	poll_cb ()	103	poll_cb ()
85	{	104	{
86	dSP;	105	dSP;
87	int count = 0;	106	int count = 0;
		107	int do_croak = 0;
88	aio_req req;	108	aio_req req;
89
90	{
91	/* read and signals sent by the worker threads */
92	char buf [32];
93	while (read (respipe [0], buf, 32) > 0)
94	;
95	}
96		109
97	for (;;)	110	for (;;)
98	{	111	{
99	pthread_mutex_lock (&reslock);	112	pthread_mutex_lock (&reslock);
100
101	req = ress;	113	req = ress;
102		114
103	if (ress)	115	if (req)
104	{	116	{
105	ress = ress->next;	117	ress = req->next;
		118
106	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	}
107	}	128	}
108		129
109	pthread_mutex_unlock (&reslock);	130	pthread_mutex_unlock (&reslock);
110		131
111	if (!req)	132	if (!req)
…		…
119	{	140	{
120	int errorno = errno;	141	int errorno = errno;
121	errno = req->errorno;	142	errno = req->errorno;
122		143
123	if (req->type == REQ_READ)	144	if (req->type == REQ_READ)
124	SvCUR_set (req->data, req->dataoffset	145	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
125	+ req->result > 0 ? req->result : 0);
126		146
		147	if (req->data2ptr && (req->type == REQ_READ \|\| req->type == REQ_WRITE))
		148	SvREADONLY_off (req->data);
		149
127	if (req->data)	150	if (req->statdata)
128	SvREFCNT_dec (req->data);
129
130	if (req->type == REQ_STAT \|\| req->type == REQ_LSTAT \|\| req->type == REQ_FSTAT)
131	{	151	{
132	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	152	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
133	PL_laststatval = req->result;	153	PL_laststatval = req->result;
134	PL_statcache = *(req->statdata);	154	PL_statcache = *(req->statdata);
135
136	Safefree (req->statdata);
137	}	155	}
138		156
		157	ENTER;
139	PUSHMARK (SP);	158	PUSHMARK (SP);
140	XPUSHs (sv_2mortal (newSViv (req->result)));	159	XPUSHs (sv_2mortal (newSViv (req->result)));
141		160
142	if (req->type == REQ_OPEN)	161	if (req->type == REQ_OPEN)
143	{	162	{
…		…
146		165
147	PUTBACK;	166	PUTBACK;
148	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);	167	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);
149	SPAGAIN;	168	SPAGAIN;
150		169
151	fh = POPs;	170	fh = SvREFCNT_inc (POPs);
152		171
153	PUSHMARK (SP);	172	PUSHMARK (SP);
154	XPUSHs (fh);	173	XPUSHs (sv_2mortal (fh));
155	}	174	}
156		175
157	if (SvOK (req->callback))	176	if (SvOK (req->callback))
158	{	177	{
159	PUTBACK;	178	PUTBACK;
160	call_sv (req->callback, G_VOID \| G_EVAL);	179	call_sv (req->callback, G_VOID \| G_EVAL);
161	SPAGAIN;	180	SPAGAIN;
		181
		182	if (SvTRUE (ERRSV))
		183	{
		184	free_req (req);
		185	croak (0);
		186	}
162	}	187	}
		188
163		189	LEAVE;
164	if (req->callback)
165	SvREFCNT_dec (req->callback);
166		190
167	errno = errorno;	191	errno = errorno;
168	count++;	192	count++;
169	}	193	}
170		194
171	Safefree (req);	195	free_req (req);
172	}	196	}
173		197
174	return count;	198	return count;
175	}	199	}
176		200
…		…
197	}	221	}
198		222
199	static void	223	static void
200	send_req (aio_req req)	224	send_req (aio_req req)
201	{	225	{
		226	while (started < wanted && nreqs >= started)
		227	start_thread ();
		228
202	nreqs++;	229	nreqs++;
203		230
204	pthread_mutex_lock (&reqlock);	231	pthread_mutex_lock (&reqlock);
205		232
206	req->next = 0;	233	req->next = 0;
…		…
214	reqe = reqs = req;	241	reqe = reqs = req;
215		242
216	pthread_cond_signal (&reqwait);	243	pthread_cond_signal (&reqwait);
217	pthread_mutex_unlock (&reqlock);	244	pthread_mutex_unlock (&reqlock);
218		245
219	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)
220	{	288	{
221	poll_wait ();	289	poll_wait ();
222	poll_cb ();	290	poll_cb ();
223	}	291	}
224	}	292	}
225		293
226	static void	294	static void create_pipe ()
227	end_thread (void)
228	{	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	{
229	aio_req req;	320	aio_req prv;
230	New (0, req, 1, aio_cb);
231	req->type = REQ_QUIT;
232		321
233	send_req (req);	322	started = 0;
234	}
235		323
236	static void	324	while (reqs)
237	read_write (int dowrite, int fd, off_t offset, size_t length,	325	{
238	SV data, STRLEN dataoffset, SV callback)	326	prv = reqs;
239	{	327	reqs = prv->next;
240	aio_req req;	328	free_req (prv);
241	STRLEN svlen;	329	}
242	char *svptr = SvPV (data, svlen);
243		330
244	SvUPGRADE (data, SVt_PV);	331	reqs = reqe = 0;
245	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;
246		341
247	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);
248	dataoffset += svlen;	413	offset += len;
249		414	count -= len;
250	if (dataoffset < 0 \|\| dataoffset > svlen)
251	croak ("data offset outside of string");
252
253	if (dowrite)
254	{	415	}
255	/* write: check length and adjust. */
256	if (length < 0 \|\| length + dataoffset > svlen)
257	length = svlen - dataoffset;
258	}
259	else
260	{
261	/* read: grow scalar as necessary */
262	svptr = SvGROW (data, length + dataoffset);
263	}
264		416
265	if (length < 0)	417	errno = 0;
266	croak ("length must not be negative");
267
268	Newz (0, req, 1, aio_cb);
269
270	if (!req)
271	croak ("out of memory during aio_req allocation");
272
273	req->type = dowrite ? REQ_WRITE : REQ_READ;
274	req->fd = fd;
275	req->offset = offset;
276	req->length = length;
277	req->data = SvREFCNT_inc (data);
278	req->dataptr = (char *)svptr + dataoffset;
279	req->callback = SvREFCNT_inc (callback);
280
281	send_req (req);
282	}	418	}
		419	#endif
		420
		421	/*****************************************************************************/
283		422
284	static void *	423	static void *
285	aio_proc (void *thr_arg)	424	aio_proc (void *thr_arg)
286	{	425	{
287	aio_req req;	426	aio_req req;
…		…
315		454
316	switch (type)	455	switch (type)
317	{	456	{
318	case REQ_READ: req->result = pread (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;
319	case REQ_WRITE: req->result = pwrite (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;
320	#if SYS_readahead	459
321	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;
322	#else
323	case REQ_READAHEAD: req->result = -1; errno = ENOSYS; break;
324	#endif
325		461
326	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	462	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
327	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	463	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
328	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	464	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
329		465
330	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;
331	case REQ_CLOSE: req->result = close (req->fd); break;	467	case REQ_CLOSE: req->result = close (req->fd); break;
332	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;
333		471
		472	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
334	case REQ_FSYNC: req->result = fsync (req->fd); break;	473	case REQ_FSYNC: req->result = fsync (req->fd); break;
335	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
336		474
337	case REQ_QUIT:	475	case REQ_QUIT:
338	break;	476	break;
339		477
340	default:	478	default:
…		…
366	while (type != REQ_QUIT);	504	while (type != REQ_QUIT);
367		505
368	return 0;	506	return 0;
369	}	507	}
370		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
371	MODULE = IO::AIO PACKAGE = IO::AIO	521	MODULE = IO::AIO PACKAGE = IO::AIO
372		522
373	PROTOTYPES: ENABLE	523	PROTOTYPES: ENABLE
374		524
375	BOOT:	525	BOOT:
376	{	526	{
377	if (pipe (respipe))	527	create_pipe ();
378	croak ("unable to initialize result pipe");	528	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
379
380	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
381	croak ("cannot set result pipe to nonblocking mode");
382
383	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
384	croak ("cannot set result pipe to nonblocking mode");
385	}	529	}
386		530
387	void	531	void
388	min_parallel(nthreads)	532	min_parallel(nthreads)
389	int nthreads	533	int nthreads
390	PROTOTYPE: $	534	PROTOTYPE: $
391	CODE:
392	while (nthreads > started)
393	start_thread ();
394		535
395	void	536	void
396	max_parallel(nthreads)	537	max_parallel(nthreads)
397	int nthreads	538	int nthreads
398	PROTOTYPE: $	539	PROTOTYPE: $
399	CODE:
400	{
401	int cur = started;
402	while (cur > nthreads)
403	{
404	end_thread ();
405	cur--;
406	}
407
408	while (started > nthreads)
409	{
410	poll_wait ();
411	poll_cb ();
412	}
413	}
414		540
415	int	541	int
416	max_outstanding(nreqs)	542	max_outstanding(nreqs)
417	int nreqs	543	int nreqs
418	PROTOTYPE: $	544	PROTOTYPE: $
…		…
427	int mode	553	int mode
428	SV * callback	554	SV * callback
429	PROTOTYPE: $$$;$	555	PROTOTYPE: $$$;$
430	CODE:	556	CODE:
431	{	557	{
432	aio_req req;	558	dREQ;
433
434	Newz (0, req, 1, aio_cb);
435
436	if (!req)
437	croak ("out of memory during aio_req allocation");
438		559
439	req->type = REQ_OPEN;	560	req->type = REQ_OPEN;
440	req->data = newSVsv (pathname);	561	req->data = newSVsv (pathname);
441	req->dataptr = SvPV_nolen (req->data);	562	req->dataptr = SvPVbyte_nolen (req->data);
442	req->fd = flags;	563	req->fd = flags;
443	req->mode = mode;	564	req->mode = mode;
444	req->callback = SvREFCNT_inc (callback);
445		565
446	send_req (req);	566	send_req (req);
447	}	567	}
448		568
449	void	569	void
450	aio_close(fh,callback=&PL_sv_undef)	570	aio_close(fh,callback=&PL_sv_undef)
451	InputStream fh	571	SV * fh
452	SV * callback	572	SV * callback
453	PROTOTYPE: $;$	573	PROTOTYPE: $;$
454	ALIAS:	574	ALIAS:
455	aio_close = REQ_CLOSE	575	aio_close = REQ_CLOSE
456	aio_fsync = REQ_FSYNC	576	aio_fsync = REQ_FSYNC
457	aio_fdatasync = REQ_FDATASYNC	577	aio_fdatasync = REQ_FDATASYNC
458	CODE:	578	CODE:
459	{	579	{
460	aio_req req;	580	dREQ;
461
462	Newz (0, req, 1, aio_cb);
463
464	if (!req)
465	croak ("out of memory during aio_req allocation");
466		581
467	req->type = ix;	582	req->type = ix;
		583	req->fh = newSVsv (fh);
468	req->fd = PerlIO_fileno (fh);	584	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
469	req->callback = SvREFCNT_inc (callback);
470		585
471	send_req (req);	586	send_req (req);
472	}	587	}
473		588
474	void	589	void
475	aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	590	aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
476	InputStream fh	591	SV * fh
477	UV offset	592	UV offset
478	IV length	593	IV length
479	SV * data	594	SV * data
480	IV dataoffset	595	IV dataoffset
481	SV * callback	596	SV * callback
		597	ALIAS:
		598	aio_read = REQ_READ
		599	aio_write = REQ_WRITE
482	PROTOTYPE: $$$$$;$	600	PROTOTYPE: $$$$$;$
483	CODE:	601	CODE:
484	read_write (0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);	602	{
		603	aio_req req;
		604	STRLEN svlen;
		605	char *svptr = SvPVbyte (data, svlen);
485		606
486	void	607	SvUPGRADE (data, SVt_PV);
487	aio_write(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	608	SvPOK_on (data);
488	OutputStream fh	609
489	UV offset	610	if (dataoffset < 0)
490	IV length	611	dataoffset += svlen;
491	SV * data	612
492	IV dataoffset	613	if (dataoffset < 0 \|\| dataoffset > svlen)
493	SV * callback	614	croak ("data offset outside of string");
494	PROTOTYPE: $$$$$;$	615
495	CODE:	616	if (ix == REQ_WRITE)
496	read_write (1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);	617	{
		618	/* write: check length and adjust. */
		619	if (length < 0 \|\| length + dataoffset > svlen)
		620	length = svlen - dataoffset;
		621	}
		622	else
		623	{
		624	/* read: grow scalar as necessary */
		625	svptr = SvGROW (data, length + dataoffset);
		626	}
		627
		628	if (length < 0)
		629	croak ("length must not be negative");
		630
		631	{
		632	dREQ;
		633
		634	req->type = ix;
		635	req->fh = newSVsv (fh);
		636	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
		637	: IoOFP (sv_2io (fh)));
		638	req->offset = offset;
		639	req->length = length;
		640	req->data = SvREFCNT_inc (data);
		641	req->dataptr = (char *)svptr + dataoffset;
		642
		643	if (!SvREADONLY (data))
		644	{
		645	SvREADONLY_on (data);
		646	req->data2ptr = (void *)data;
		647	}
		648
		649	send_req (req);
		650	}
		651	}
497		652
498	void	653	void
499	aio_readahead(fh,offset,length,callback=&PL_sv_undef)	654	aio_readahead(fh,offset,length,callback=&PL_sv_undef)
500	InputStream fh	655	SV * fh
501	UV offset	656	UV offset
502	IV length	657	IV length
503	SV * callback	658	SV * callback
504	PROTOTYPE: $$$;$	659	PROTOTYPE: $$$;$
505	CODE:	660	CODE:
506	{	661	{
507	aio_req req;	662	dREQ;
508
509	if (length < 0)
510	croak ("length must not be negative");
511
512	Newz (0, req, 1, aio_cb);
513
514	if (!req)
515	croak ("out of memory during aio_req allocation");
516		663
517	req->type = REQ_READAHEAD;	664	req->type = REQ_READAHEAD;
		665	req->fh = newSVsv (fh);
518	req->fd = PerlIO_fileno (fh);	666	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
519	req->offset = offset;	667	req->offset = offset;
520	req->length = length;	668	req->length = length;
521	req->callback = SvREFCNT_inc (callback);
522		669
523	send_req (req);	670	send_req (req);
524	}	671	}
525		672
526	void	673	void
…		…
530	ALIAS:	677	ALIAS:
531	aio_stat = REQ_STAT	678	aio_stat = REQ_STAT
532	aio_lstat = REQ_LSTAT	679	aio_lstat = REQ_LSTAT
533	CODE:	680	CODE:
534	{	681	{
535	aio_req req;	682	dREQ;
536
537	Newz (0, req, 1, aio_cb);
538
539	if (!req)
540	croak ("out of memory during aio_req allocation");
541		683
542	New (0, req->statdata, 1, Stat_t);	684	New (0, req->statdata, 1, Stat_t);
543
544	if (!req->statdata)	685	if (!req->statdata)
		686	{
		687	free_req (req);
545	croak ("out of memory during aio_req->statdata allocation");	688	croak ("out of memory during aio_req->statdata allocation");
		689	}
546		690
547	if (SvPOK (fh_or_path))	691	if (SvPOK (fh_or_path))
548	{	692	{
549	req->type = ix;	693	req->type = ix;
550	req->data = newSVsv (fh_or_path);	694	req->data = newSVsv (fh_or_path);
551	req->dataptr = SvPV_nolen (req->data);	695	req->dataptr = SvPVbyte_nolen (req->data);
552	}	696	}
553	else	697	else
554	{	698	{
555	req->type = REQ_FSTAT;	699	req->type = REQ_FSTAT;
		700	req->fh = newSVsv (fh_or_path);
556	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	701	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
557	}	702	}
558
559	req->callback = SvREFCNT_inc (callback);
560		703
561	send_req (req);	704	send_req (req);
562	}	705	}
563		706
564	void	707	void
565	aio_unlink(pathname,callback=&PL_sv_undef)	708	aio_unlink(pathname,callback=&PL_sv_undef)
566	SV * pathname	709	SV * pathname
567	SV * callback	710	SV * callback
		711	ALIAS:
		712	aio_unlink = REQ_UNLINK
		713	aio_rmdir = REQ_RMDIR
568	CODE:	714	CODE:
569	{	715	{
570	aio_req req;	716	dREQ;
571		717
572	Newz (0, req, 1, aio_cb);	718	req->type = ix;
		719	req->data = newSVsv (pathname);
		720	req->dataptr = SvPVbyte_nolen (req->data);
573		721
574	if (!req)	722	send_req (req);
575	croak ("out of memory during aio_req allocation");	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;
576		733
577	req->type = REQ_UNLINK;	734	req->type = REQ_SYMLINK;
		735	req->fh = newSVsv (oldpath);
		736	req->data2ptr = SvPVbyte_nolen (req->fh);
578	req->data = newSVsv (pathname);	737	req->data = newSVsv (newpath);
579	req->dataptr = SvPV_nolen (req->data);	738	req->dataptr = SvPVbyte_nolen (req->data);
580	req->callback = SvREFCNT_inc (callback);
581		739
582	send_req (req);	740	send_req (req);
583	}	741	}
584		742
585	void	743	void

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Comparing IO-AIO/AIO.xs (file contents): Revision 1.10 by root, Wed Jul 13 00:13:09 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 1.10 by root, Wed Jul 13 00:13:09 2005 UTC vs.
Revision 1.31 by root, Thu Aug 18 16:34:53 2005 UTC