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

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.8 by root, Mon Jul 11 02:53:59 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
		8	#include "autoconf/config.h"
		9
5	#include <sys/types.h>	10	#include <sys/types.h>
6	#include <sys/stat.h>	11	#include <sys/stat.h>
		12
7	#include <unistd.h>	13	#include <unistd.h>
8	#include <fcntl.h>	14	#include <fcntl.h>
9	#include <signal.h>	15	#include <signal.h>
10	#include <sched.h>	16	#include <sched.h>
11	#include <endian.h>
12		17
13	#include <pthread.h>	18	#include <pthread.h>
14	#include <sys/syscall.h>
15		19
16	typedef void InputStream; / hack, but 5.6.1 is simply toooo old ;) */	20	typedef void InputStream; / hack, but 5.6.1 is simply toooo old ;) */
17	typedef void OutputStream; / hack, but 5.6.1 is simply toooo old ;) */	21	typedef void OutputStream; / hack, but 5.6.1 is simply toooo old ;) */
18	typedef void InOutStream; / hack, but 5.6.1 is simply toooo old ;) */	22	typedef void InOutStream; / hack, but 5.6.1 is simply toooo old ;) */
19		23
25		29
26	enum {	30	enum {
27	REQ_QUIT,	31	REQ_QUIT,
28	REQ_OPEN, REQ_CLOSE,	32	REQ_OPEN, REQ_CLOSE,
29	REQ_READ, REQ_WRITE, REQ_READAHEAD,	33	REQ_READ, REQ_WRITE, REQ_READAHEAD,
30	REQ_STAT, REQ_LSTAT, REQ_FSTAT, REQ_UNLINK,	34	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
31	REQ_FSYNC, REQ_FDATASYNC,	35	REQ_FSYNC, REQ_FDATASYNC,
		36	REQ_UNLINK, REQ_RMDIR,
		37	REQ_SYMLINK,
32	};	38	};
33		39
34	typedef struct aio_cb {	40	typedef struct aio_cb {
35	struct aio_cb *volatile next;	41	struct aio_cb *volatile next;
36		42
…		…
40	off_t offset;	46	off_t offset;
41	size_t length;	47	size_t length;
42	ssize_t result;	48	ssize_t result;
43	mode_t mode; /* open */	49	mode_t mode; /* open */
44	int errorno;	50	int errorno;
45	SV data, callback;	51	SV data, callback, *fh;
46	void *dataptr;	52	void dataptr, data2ptr;
47	STRLEN dataoffset;	53	STRLEN dataoffset;
48		54
49	Stat_t *statdata;	55	Stat_t *statdata;
50	} aio_cb;	56	} aio_cb;
51		57
52	typedef aio_cb *aio_req;	58	typedef aio_cb *aio_req;
53		59
54	static int started;	60	static int started, wanted;
55	static int nreqs;	61	static volatile int nreqs;
56	static int max_outstanding = 1<<30;	62	static int max_outstanding = 1<<30;
57	static int respipe [2];	63	static int respipe [2];
58		64
59	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	65	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;
60	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;	66	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
61	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	67	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
62		68
63	static volatile aio_req reqs, reqe; /* queue start, queue end */	69	static volatile aio_req reqs, reqe; /* queue start, queue end */
64	static volatile aio_req ress, rese; /* queue start, queue end */	70	static volatile aio_req ress, rese; /* queue start, queue end */
65		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
66	static void	89	static void
67	poll_wait ()	90	poll_wait ()
68	{	91	{
69	if (!nreqs)	92	if (nreqs && !ress)
70	return;	93	{
71
72	fd_set rfd;	94	fd_set rfd;
73	FD_ZERO(&rfd);	95	FD_ZERO(&rfd);
74	FD_SET(respipe [0], &rfd);	96	FD_SET(respipe [0], &rfd);
75		97
76	select (respipe [0] + 1, &rfd, 0, 0, 0);	98	select (respipe [0] + 1, &rfd, 0, 0, 0);
		99	}
77	}	100	}
78		101
79	static int	102	static int
80	poll_cb ()	103	poll_cb ()
81	{	104	{
82	dSP;	105	dSP;
83	int count = 0;	106	int count = 0;
		107	int do_croak = 0;
84	aio_req req;	108	aio_req req;
85
86	{
87	/* read and signals sent by the worker threads */
88	char buf [32];
89	while (read (respipe [0], buf, 32) > 0)
90	;
91	}
92		109
93	for (;;)	110	for (;;)
94	{	111	{
95	pthread_mutex_lock (&reslock);	112	pthread_mutex_lock (&reslock);
96
97	req = ress;	113	req = ress;
98		114
99	if (ress)	115	if (req)
100	{	116	{
101	ress = ress->next;	117	ress = req->next;
		118
102	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	}
103	}	128	}
104		129
105	pthread_mutex_unlock (&reslock);	130	pthread_mutex_unlock (&reslock);
106		131
107	if (!req)	132	if (!req)
…		…
115	{	140	{
116	int errorno = errno;	141	int errorno = errno;
117	errno = req->errorno;	142	errno = req->errorno;
118		143
119	if (req->type == REQ_READ)	144	if (req->type == REQ_READ)
120	SvCUR_set (req->data, req->dataoffset	145	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
121	+ req->result > 0 ? req->result : 0);
122		146
		147	if (req->data2ptr && (req->type == REQ_READ \|\| req->type == REQ_WRITE))
		148	SvREADONLY_off (req->data);
		149
123	if (req->data)	150	if (req->statdata)
124	SvREFCNT_dec (req->data);
125
126	if (req->type == REQ_STAT \|\| req->type == REQ_LSTAT \|\| req->type == REQ_FSTAT)
127	{	151	{
128	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	152	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
129	PL_laststatval = req->result;	153	PL_laststatval = req->result;
130	PL_statcache = *(req->statdata);	154	PL_statcache = *(req->statdata);
131
132	Safefree (req->statdata);
133	}	155	}
134		156
		157	ENTER;
135	PUSHMARK (SP);	158	PUSHMARK (SP);
136	XPUSHs (sv_2mortal (newSViv (req->result)));	159	XPUSHs (sv_2mortal (newSViv (req->result)));
137		160
138	if (req->type == REQ_OPEN)	161	if (req->type == REQ_OPEN)
139	{	162	{
…		…
142		165
143	PUTBACK;	166	PUTBACK;
144	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);	167	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);
145	SPAGAIN;	168	SPAGAIN;
146		169
147	fh = POPs;	170	fh = SvREFCNT_inc (POPs);
148		171
149	PUSHMARK (SP);	172	PUSHMARK (SP);
150	XPUSHs (fh);	173	XPUSHs (sv_2mortal (fh));
151	}	174	}
152		175
153	if (SvOK (req->callback))	176	if (SvOK (req->callback))
154	{	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	}
		188
159		189	LEAVE;
160	if (req->callback)
161	SvREFCNT_dec (req->callback);
162		190
163	errno = errorno;	191	errno = errorno;
164	count++;	192	count++;
165	}	193	}
166		194
167	Safefree (req);	195	free_req (req);
168	}	196	}
169		197
170	return count;	198	return count;
171	}	199	}
172		200
…		…
193	}	221	}
194		222
195	static void	223	static void
196	send_req (aio_req req)	224	send_req (aio_req req)
197	{	225	{
		226	while (started < wanted && nreqs >= started)
		227	start_thread ();
		228
198	nreqs++;	229	nreqs++;
199		230
200	pthread_mutex_lock (&reqlock);	231	pthread_mutex_lock (&reqlock);
201		232
202	req->next = 0;	233	req->next = 0;
…		…
210	reqe = reqs = req;	241	reqe = reqs = req;
211		242
212	pthread_cond_signal (&reqwait);	243	pthread_cond_signal (&reqwait);
213	pthread_mutex_unlock (&reqlock);	244	pthread_mutex_unlock (&reqlock);
214		245
215	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)
216	{	288	{
217	poll_wait ();	289	poll_wait ();
218	poll_cb ();	290	poll_cb ();
219	}	291	}
220	}	292	}
221		293
222	static void	294	static void create_pipe ()
223	end_thread (void)
224	{	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	{
225	aio_req req;	320	aio_req prv;
226	New (0, req, 1, aio_cb);
227	req->type = REQ_QUIT;
228		321
229	send_req (req);	322	started = 0;
230	}
231		323
232	static void	324	while (reqs)
233	read_write (int dowrite, int fd, off_t offset, size_t length,	325	{
234	SV data, STRLEN dataoffset, SV callback)	326	prv = reqs;
235	{	327	reqs = prv->next;
236	aio_req req;	328	free_req (prv);
237	STRLEN svlen;	329	}
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
369	PROTOTYPES: ENABLE	523	PROTOTYPES: ENABLE
370		524
371	BOOT:	525	BOOT:
372	{	526	{
373	if (pipe (respipe))	527	create_pipe ();
374	croak ("unable to initialize result pipe");	528	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
375
376	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
377	croak ("cannot set result pipe to nonblocking mode");
378
379	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
380	croak ("cannot set result pipe to nonblocking mode");
381	}	529	}
382		530
383	void	531	void
384	min_parallel(nthreads)	532	min_parallel(nthreads)
385	int nthreads	533	int nthreads
386	PROTOTYPE: $	534	PROTOTYPE: $
387	CODE:
388	while (nthreads > started)
389	start_thread ();
390		535
391	void	536	void
392	max_parallel(nthreads)	537	max_parallel(nthreads)
393	int nthreads	538	int nthreads
394	PROTOTYPE: $	539	PROTOTYPE: $
395	CODE:
396	{
397	int cur = started;
398	while (cur > nthreads)
399	{
400	end_thread ();
401	cur--;
402	}
403
404	while (started > nthreads)
405	{
406	poll_wait ();
407	poll_cb ();
408	}
409	}
410		540
411	int	541	int
412	max_outstanding(nreqs)	542	max_outstanding(nreqs)
413	int nreqs	543	int nreqs
414	PROTOTYPE: $	544	PROTOTYPE: $
…		…
423	int mode	553	int mode
424	SV * callback	554	SV * callback
425	PROTOTYPE: $$$;$	555	PROTOTYPE: $$$;$
426	CODE:	556	CODE:
427	{	557	{
428	aio_req req;	558	dREQ;
429
430	Newz (0, req, 1, aio_cb);
431
432	if (!req)
433	croak ("out of memory during aio_req allocation");
434		559
435	req->type = REQ_OPEN;	560	req->type = REQ_OPEN;
436	req->data = newSVsv (pathname);	561	req->data = newSVsv (pathname);
437	req->dataptr = SvPV_nolen (req->data);	562	req->dataptr = SvPVbyte_nolen (req->data);
438	req->fd = flags;	563	req->fd = flags;
439	req->mode = mode;	564	req->mode = mode;
440	req->callback = SvREFCNT_inc (callback);
441		565
442	send_req (req);	566	send_req (req);
443	}	567	}
444		568
445	void	569	void
446	aio_close(fh,callback=&PL_sv_undef)	570	aio_close(fh,callback=&PL_sv_undef)
447	InputStream fh	571	SV * fh
448	SV * callback	572	SV * callback
449	PROTOTYPE: $;$	573	PROTOTYPE: $;$
450	ALIAS:	574	ALIAS:
451	aio_close = REQ_CLOSE	575	aio_close = REQ_CLOSE
452	aio_fsync = REQ_FSYNC	576	aio_fsync = REQ_FSYNC
453	aio_fdatasync = REQ_FDATASYNC	577	aio_fdatasync = REQ_FDATASYNC
454	CODE:	578	CODE:
455	{	579	{
456	aio_req req;	580	dREQ;
457
458	Newz (0, req, 1, aio_cb);
459
460	if (!req)
461	croak ("out of memory during aio_req allocation");
462		581
463	req->type = ix;	582	req->type = ix;
		583	req->fh = newSVsv (fh);
464	req->fd = PerlIO_fileno (fh);	584	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
465	req->callback = SvREFCNT_inc (callback);
466		585
467	send_req (req);	586	send_req (req);
468	}	587	}
469		588
470	void	589	void
471	aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	590	aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
472	InputStream fh	591	SV * fh
473	UV offset	592	UV offset
474	IV length	593	IV length
475	SV * data	594	SV * data
476	IV dataoffset	595	IV dataoffset
477	SV * callback	596	SV * callback
		597	ALIAS:
		598	aio_read = REQ_READ
		599	aio_write = REQ_WRITE
478	PROTOTYPE: $$$$$;$	600	PROTOTYPE: $$$$$;$
479	CODE:	601	CODE:
480	read_write (0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);	602	{
		603	aio_req req;
		604	STRLEN svlen;
		605	char *svptr = SvPVbyte (data, svlen);
481		606
482	void	607	SvUPGRADE (data, SVt_PV);
483	aio_write(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	608	SvPOK_on (data);
484	OutputStream fh	609
485	UV offset	610	if (dataoffset < 0)
486	IV length	611	dataoffset += svlen;
487	SV * data	612
488	IV dataoffset	613	if (dataoffset < 0 \|\| dataoffset > svlen)
489	SV * callback	614	croak ("data offset outside of string");
490	PROTOTYPE: $$$$$;$	615
491	CODE:	616	if (ix == REQ_WRITE)
492	read_write (1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);	617	{
		618	/* write: check length and adjust. */
		619	if (length < 0 \|\| length + dataoffset > svlen)
		620	length = svlen - dataoffset;
		621	}
		622	else
		623	{
		624	/* read: grow scalar as necessary */
		625	svptr = SvGROW (data, length + dataoffset);
		626	}
		627
		628	if (length < 0)
		629	croak ("length must not be negative");
		630
		631	{
		632	dREQ;
		633
		634	req->type = ix;
		635	req->fh = newSVsv (fh);
		636	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
		637	: IoOFP (sv_2io (fh)));
		638	req->offset = offset;
		639	req->length = length;
		640	req->data = SvREFCNT_inc (data);
		641	req->dataptr = (char *)svptr + dataoffset;
		642
		643	if (!SvREADONLY (data))
		644	{
		645	SvREADONLY_on (data);
		646	req->data2ptr = (void *)data;
		647	}
		648
		649	send_req (req);
		650	}
		651	}
493		652
494	void	653	void
495	aio_readahead(fh,offset,length,callback=&PL_sv_undef)	654	aio_readahead(fh,offset,length,callback=&PL_sv_undef)
496	InputStream fh	655	SV * fh
497	UV offset	656	UV offset
498	IV length	657	IV length
499	SV * callback	658	SV * callback
500	PROTOTYPE: $$$;$	659	PROTOTYPE: $$$;$
501	CODE:	660	CODE:
502	{	661	{
503	aio_req req;	662	dREQ;
504
505	if (length < 0)
506	croak ("length must not be negative");
507
508	Newz (0, req, 1, aio_cb);
509
510	if (!req)
511	croak ("out of memory during aio_req allocation");
512		663
513	req->type = REQ_READAHEAD;	664	req->type = REQ_READAHEAD;
		665	req->fh = newSVsv (fh);
514	req->fd = PerlIO_fileno (fh);	666	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
515	req->offset = offset;	667	req->offset = offset;
516	req->length = length;	668	req->length = length;
517	req->callback = SvREFCNT_inc (callback);
518		669
519	send_req (req);	670	send_req (req);
520	}	671	}
521		672
522	void	673	void
…		…
526	ALIAS:	677	ALIAS:
527	aio_stat = REQ_STAT	678	aio_stat = REQ_STAT
528	aio_lstat = REQ_LSTAT	679	aio_lstat = REQ_LSTAT
529	CODE:	680	CODE:
530	{	681	{
531	aio_req req;	682	dREQ;
532
533	Newz (0, req, 1, aio_cb);
534
535	if (!req)
536	croak ("out of memory during aio_req allocation");
537		683
538	New (0, req->statdata, 1, Stat_t);	684	New (0, req->statdata, 1, Stat_t);
539
540	if (!req->statdata)	685	if (!req->statdata)
		686	{
		687	free_req (req);
541	croak ("out of memory during aio_req->statdata allocation");	688	croak ("out of memory during aio_req->statdata allocation");
		689	}
542		690
543	if (SvPOK (fh_or_path))	691	if (SvPOK (fh_or_path))
544	{	692	{
545	req->type = ix;	693	req->type = ix;
546	req->data = newSVsv (fh_or_path);	694	req->data = newSVsv (fh_or_path);
547	req->dataptr = SvPV_nolen (req->data);	695	req->dataptr = SvPVbyte_nolen (req->data);
548	}	696	}
549	else	697	else
550	{	698	{
551	req->type = REQ_FSTAT;	699	req->type = REQ_FSTAT;
		700	req->fh = newSVsv (fh_or_path);
552	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	701	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
553	}	702	}
554
555	req->callback = SvREFCNT_inc (callback);
556		703
557	send_req (req);	704	send_req (req);
558	}	705	}
559		706
560	void	707	void
561	aio_unlink(pathname,callback=&PL_sv_undef)	708	aio_unlink(pathname,callback=&PL_sv_undef)
562	SV * pathname	709	SV * pathname
563	SV * callback	710	SV * callback
		711	ALIAS:
		712	aio_unlink = REQ_UNLINK
		713	aio_rmdir = REQ_RMDIR
564	CODE:	714	CODE:
565	{	715	{
566	aio_req req;	716	dREQ;
567		717
568	Newz (0, req, 1, aio_cb);	718	req->type = ix;
		719	req->data = newSVsv (pathname);
		720	req->dataptr = SvPVbyte_nolen (req->data);
569		721
570	if (!req)	722	send_req (req);
571	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;
572		733
573	req->type = REQ_UNLINK;	734	req->type = REQ_SYMLINK;
		735	req->fh = newSVsv (oldpath);
		736	req->data2ptr = SvPVbyte_nolen (req->fh);
574	req->data = newSVsv (pathname);	737	req->data = newSVsv (newpath);
575	req->dataptr = SvPV_nolen (req->data);	738	req->dataptr = SvPVbyte_nolen (req->data);
576	req->callback = SvREFCNT_inc (callback);
577		739
578	send_req (req);	740	send_req (req);
579	}	741	}
580		742
581	void	743	void

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Comparing IO-AIO/AIO.xs (file contents): Revision 1.8 by root, Mon Jul 11 02:53:59 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 1.8 by root, Mon Jul 11 02:53:59 2005 UTC vs.
Revision 1.31 by root, Thu Aug 18 16:34:53 2005 UTC