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

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.9 by root, Tue Jul 12 11:02:54 2005 UTC vs.
Revision 1.28 by root, Wed Aug 17 05:06:59 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		17
12	#include <pthread.h>	18	#include <pthread.h>
13	#include <sys/syscall.h>
14		19
15	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 ;) */
16	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 ;) */
17	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 ;) */
18		23
24		29
25	enum {	30	enum {
26	REQ_QUIT,	31	REQ_QUIT,
27	REQ_OPEN, REQ_CLOSE,	32	REQ_OPEN, REQ_CLOSE,
28	REQ_READ, REQ_WRITE, REQ_READAHEAD,	33	REQ_READ, REQ_WRITE, REQ_READAHEAD,
29	REQ_STAT, REQ_LSTAT, REQ_FSTAT, REQ_UNLINK,	34	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
30	REQ_FSYNC, REQ_FDATASYNC,	35	REQ_FSYNC, REQ_FDATASYNC,
		36	REQ_UNLINK, REQ_RMDIR,
		37	REQ_SYMLINK,
31	};	38	};
32		39
33	typedef struct aio_cb {	40	typedef struct aio_cb {
34	struct aio_cb *volatile next;	41	struct aio_cb *volatile next;
35		42
…		…
39	off_t offset;	46	off_t offset;
40	size_t length;	47	size_t length;
41	ssize_t result;	48	ssize_t result;
42	mode_t mode; /* open */	49	mode_t mode; /* open */
43	int errorno;	50	int errorno;
44	SV data, callback;	51	SV data, callback, *fh;
45	void *dataptr;	52	void dataptr, data2ptr;
46	STRLEN dataoffset;	53	STRLEN dataoffset;
47		54
48	Stat_t *statdata;	55	Stat_t *statdata;
49	} aio_cb;	56	} aio_cb;
50		57
51	typedef aio_cb *aio_req;	58	typedef aio_cb *aio_req;
52		59
53	static int started;	60	static int started;
54	static int nreqs;	61	static volatile int nreqs;
55	static int max_outstanding = 1<<30;	62	static int max_outstanding = 1<<30;
56	static int respipe [2];	63	static int respipe [2];
57		64
58	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	65	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;
59	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;	66	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
60	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	67	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
61		68
62	static volatile aio_req reqs, reqe; /* queue start, queue end */	69	static volatile aio_req reqs, reqe; /* queue start, queue end */
63	static volatile aio_req ress, rese; /* queue start, queue end */	70	static volatile aio_req ress, rese; /* queue start, queue end */
64		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
65	static void	89	static void
66	poll_wait ()	90	poll_wait ()
67	{	91	{
68	if (!nreqs)	92	if (nreqs && !ress)
69	return;	93	{
70
71	fd_set rfd;	94	fd_set rfd;
72	FD_ZERO(&rfd);	95	FD_ZERO(&rfd);
73	FD_SET(respipe [0], &rfd);	96	FD_SET(respipe [0], &rfd);
74		97
75	select (respipe [0] + 1, &rfd, 0, 0, 0);	98	select (respipe [0] + 1, &rfd, 0, 0, 0);
		99	}
76	}	100	}
77		101
78	static int	102	static int
79	poll_cb ()	103	poll_cb ()
80	{	104	{
81	dSP;	105	dSP;
82	int count = 0;	106	int count = 0;
		107	int do_croak = 0;
83	aio_req req;	108	aio_req req;
84
85	{
86	/* read and signals sent by the worker threads */
87	char buf [32];
88	while (read (respipe [0], buf, 32) > 0)
89	;
90	}
91		109
92	for (;;)	110	for (;;)
93	{	111	{
94	pthread_mutex_lock (&reslock);	112	pthread_mutex_lock (&reslock);
95
96	req = ress;	113	req = ress;
97		114
98	if (ress)	115	if (req)
99	{	116	{
100	ress = ress->next;	117	ress = req->next;
		118
101	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	}
102	}	128	}
103		129
104	pthread_mutex_unlock (&reslock);	130	pthread_mutex_unlock (&reslock);
105		131
106	if (!req)	132	if (!req)
…		…
114	{	140	{
115	int errorno = errno;	141	int errorno = errno;
116	errno = req->errorno;	142	errno = req->errorno;
117		143
118	if (req->type == REQ_READ)	144	if (req->type == REQ_READ)
119	SvCUR_set (req->data, req->dataoffset	145	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
120	+ req->result > 0 ? req->result : 0);
121		146
		147	if (req->data2ptr && (req->type == REQ_READ \|\| req->type == REQ_WRITE))
		148	SvREADONLY_off (req->data);
		149
122	if (req->data)	150	if (req->statdata)
123	SvREFCNT_dec (req->data);
124
125	if (req->type == REQ_STAT \|\| req->type == REQ_LSTAT \|\| req->type == REQ_FSTAT)
126	{	151	{
127	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	152	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
128	PL_laststatval = req->result;	153	PL_laststatval = req->result;
129	PL_statcache = *(req->statdata);	154	PL_statcache = *(req->statdata);
130
131	Safefree (req->statdata);
132	}	155	}
133		156
		157	ENTER;
134	PUSHMARK (SP);	158	PUSHMARK (SP);
135	XPUSHs (sv_2mortal (newSViv (req->result)));	159	XPUSHs (sv_2mortal (newSViv (req->result)));
136		160
137	if (req->type == REQ_OPEN)	161	if (req->type == REQ_OPEN)
138	{	162	{
…		…
141		165
142	PUTBACK;	166	PUTBACK;
143	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);	167	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);
144	SPAGAIN;	168	SPAGAIN;
145		169
146	fh = POPs;	170	fh = SvREFCNT_inc (POPs);
147		171
148	PUSHMARK (SP);	172	PUSHMARK (SP);
149	XPUSHs (fh);	173	XPUSHs (sv_2mortal (fh));
150	}	174	}
151		175
152	if (SvOK (req->callback))	176	if (SvOK (req->callback))
153	{	177	{
154	PUTBACK;	178	PUTBACK;
155	call_sv (req->callback, G_VOID \| G_EVAL);	179	call_sv (req->callback, G_VOID \| G_EVAL);
156	SPAGAIN;	180	SPAGAIN;
		181
		182	if (SvTRUE (ERRSV))
		183	{
		184	free_req (req);
		185	croak (0);
		186	}
157	}	187	}
		188
158		189	LEAVE;
159	if (req->callback)
160	SvREFCNT_dec (req->callback);
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 (int dowrite, int fd, off_t offset, size_t length,
233	SV data, STRLEN dataoffset, SV callback)
234	{
235	aio_req req;
236	STRLEN svlen;
237	char *svptr = SvPV (data, svlen);
238
239	SvUPGRADE (data, SVt_PV);
240	SvPOK_on (data);
241
242	if (dataoffset < 0)
243	dataoffset += svlen;
244
245	if (dataoffset < 0 \|\| dataoffset > svlen)
246	croak ("data offset outside of string");
247
248	if (dowrite)
249	{	320	{
250	/* write: check length and adjust. */	321	prv = reqs;
251	if (length < 0 \|\| length + dataoffset > svlen)	322	reqs = prv->next;
252	length = svlen - dataoffset;	323	free_req (prv);
253	}	324	}
254	else	325
		326	reqs = reqe = 0;
		327
		328	while (ress)
255	{	329	{
256	/* read: grow scalar as necessary */	330	prv = ress;
257	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)
258	}	402	{
		403	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
259		404
260	if (length < 0)	405	pread (fd, readahead_buf, len, offset);
261	croak ("length must not be negative");	406	offset += len;
		407	count -= len;
		408	}
262		409
263	Newz (0, req, 1, aio_cb);	410	errno = 0;
264
265	if (!req)
266	croak ("out of memory during aio_req allocation");
267
268	req->type = dowrite ? REQ_WRITE : REQ_READ;
269	req->fd = fd;
270	req->offset = offset;
271	req->length = length;
272	req->data = SvREFCNT_inc (data);
273	req->dataptr = (char *)svptr + dataoffset;
274	req->callback = SvREFCNT_inc (callback);
275
276	send_req (req);
277	}	411	}
		412	#endif
		413
		414	/*****************************************************************************/
278		415
279	static void *	416	static void *
280	aio_proc (void *thr_arg)	417	aio_proc (void *thr_arg)
281	{	418	{
282	aio_req req;	419	aio_req req;
…		…
308		445
309	type = req->type;	446	type = req->type;
310		447
311	switch (type)	448	switch (type)
312	{	449	{
313	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;
314	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;
315	#if SYS_readahead	452
316	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;
317	#else
318	case REQ_READAHEAD: req->result = -1; errno = ENOSYS; break;
319	#endif
320		454
321	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	455	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
322	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	456	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
323	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	457	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
324		458
325	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;
326	case REQ_CLOSE: req->result = close (req->fd); break;	460	case REQ_CLOSE: req->result = close (req->fd); break;
327	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;
328		464
		465	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
329	case REQ_FSYNC: req->result = fsync (req->fd); break;	466	case REQ_FSYNC: req->result = fsync (req->fd); break;
330	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
331		467
332	case REQ_QUIT:	468	case REQ_QUIT:
333	break;	469	break;
334		470
335	default:	471	default:
…		…
361	while (type != REQ_QUIT);	497	while (type != REQ_QUIT);
362		498
363	return 0;	499	return 0;
364	}	500	}
365		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
366	MODULE = IO::AIO PACKAGE = IO::AIO	514	MODULE = IO::AIO PACKAGE = IO::AIO
367		515
368	PROTOTYPES: ENABLE	516	PROTOTYPES: ENABLE
369		517
370	BOOT:	518	BOOT:
371	{	519	{
372	if (pipe (respipe))	520	create_pipe ();
373	croak ("unable to initialize result pipe");	521	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
374
375	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
376	croak ("cannot set result pipe to nonblocking mode");
377
378	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
379	croak ("cannot set result pipe to nonblocking mode");
380	}	522	}
381		523
382	void	524	void
383	min_parallel(nthreads)	525	min_parallel(nthreads)
384	int nthreads	526	int nthreads
385	PROTOTYPE: $	527	PROTOTYPE: $
386	CODE:
387	while (nthreads > started)
388	start_thread ();
389		528
390	void	529	void
391	max_parallel(nthreads)	530	max_parallel(nthreads)
392	int nthreads	531	int nthreads
393	PROTOTYPE: $	532	PROTOTYPE: $
394	CODE:
395	{
396	int cur = started;
397	while (cur > nthreads)
398	{
399	end_thread ();
400	cur--;
401	}
402
403	while (started > nthreads)
404	{
405	poll_wait ();
406	poll_cb ();
407	}
408	}
409		533
410	int	534	int
411	max_outstanding(nreqs)	535	max_outstanding(nreqs)
412	int nreqs	536	int nreqs
413	PROTOTYPE: $	537	PROTOTYPE: $
…		…
422	int mode	546	int mode
423	SV * callback	547	SV * callback
424	PROTOTYPE: $$$;$	548	PROTOTYPE: $$$;$
425	CODE:	549	CODE:
426	{	550	{
427	aio_req req;	551	dREQ;
428
429	Newz (0, req, 1, aio_cb);
430
431	if (!req)
432	croak ("out of memory during aio_req allocation");
433		552
434	req->type = REQ_OPEN;	553	req->type = REQ_OPEN;
435	req->data = newSVsv (pathname);	554	req->data = newSVsv (pathname);
436	req->dataptr = SvPV_nolen (req->data);	555	req->dataptr = SvPVbyte_nolen (req->data);
437	req->fd = flags;	556	req->fd = flags;
438	req->mode = mode;	557	req->mode = mode;
439	req->callback = SvREFCNT_inc (callback);
440		558
441	send_req (req);	559	send_req (req);
442	}	560	}
443		561
444	void	562	void
445	aio_close(fh,callback=&PL_sv_undef)	563	aio_close(fh,callback=&PL_sv_undef)
446	InputStream fh	564	SV * fh
447	SV * callback	565	SV * callback
448	PROTOTYPE: $;$	566	PROTOTYPE: $;$
449	ALIAS:	567	ALIAS:
450	aio_close = REQ_CLOSE	568	aio_close = REQ_CLOSE
451	aio_fsync = REQ_FSYNC	569	aio_fsync = REQ_FSYNC
452	aio_fdatasync = REQ_FDATASYNC	570	aio_fdatasync = REQ_FDATASYNC
453	CODE:	571	CODE:
454	{	572	{
455	aio_req req;	573	dREQ;
456
457	Newz (0, req, 1, aio_cb);
458
459	if (!req)
460	croak ("out of memory during aio_req allocation");
461		574
462	req->type = ix;	575	req->type = ix;
		576	req->fh = newSVsv (fh);
463	req->fd = PerlIO_fileno (fh);	577	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
464	req->callback = SvREFCNT_inc (callback);
465		578
466	send_req (req);	579	send_req (req);
467	}	580	}
468		581
469	void	582	void
470	aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	583	aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
471	InputStream fh	584	SV * fh
472	UV offset	585	UV offset
473	IV length	586	IV length
474	SV * data	587	SV * data
475	IV dataoffset	588	IV dataoffset
476	SV * callback	589	SV * callback
		590	ALIAS:
		591	aio_read = REQ_READ
		592	aio_write = REQ_WRITE
477	PROTOTYPE: $$$$$;$	593	PROTOTYPE: $$$$$;$
478	CODE:	594	CODE:
479	read_write (0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);	595	{
		596	aio_req req;
		597	STRLEN svlen;
		598	char *svptr = SvPVbyte (data, svlen);
480		599
481	void	600	SvUPGRADE (data, SVt_PV);
482	aio_write(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	601	SvPOK_on (data);
483	OutputStream fh	602
484	UV offset	603	if (dataoffset < 0)
485	IV length	604	dataoffset += svlen;
486	SV * data	605
487	IV dataoffset	606	if (dataoffset < 0 \|\| dataoffset > svlen)
488	SV * callback	607	croak ("data offset outside of string");
489	PROTOTYPE: $$$$$;$	608
490	CODE:	609	if (ix == REQ_WRITE)
491	read_write (1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);	610	{
		611	/* write: check length and adjust. */
		612	if (length < 0 \|\| length + dataoffset > svlen)
		613	length = svlen - dataoffset;
		614	}
		615	else
		616	{
		617	/* read: grow scalar as necessary */
		618	svptr = SvGROW (data, length + dataoffset);
		619	}
		620
		621	if (length < 0)
		622	croak ("length must not be negative");
		623
		624	{
		625	dREQ;
		626
		627	req->type = ix;
		628	req->fh = newSVsv (fh);
		629	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
		630	: IoOFP (sv_2io (fh)));
		631	req->offset = offset;
		632	req->length = length;
		633	req->data = SvREFCNT_inc (data);
		634	req->dataptr = (char *)svptr + dataoffset;
		635
		636	if (!SvREADONLY (data))
		637	{
		638	SvREADONLY_on (data);
		639	req->data2ptr = (void *)data;
		640	}
		641
		642	send_req (req);
		643	}
		644	}
492		645
493	void	646	void
494	aio_readahead(fh,offset,length,callback=&PL_sv_undef)	647	aio_readahead(fh,offset,length,callback=&PL_sv_undef)
495	InputStream fh	648	SV * fh
496	UV offset	649	UV offset
497	IV length	650	IV length
498	SV * callback	651	SV * callback
499	PROTOTYPE: $$$;$	652	PROTOTYPE: $$$;$
500	CODE:	653	CODE:
501	{	654	{
502	aio_req req;	655	dREQ;
503
504	if (length < 0)
505	croak ("length must not be negative");
506
507	Newz (0, req, 1, aio_cb);
508
509	if (!req)
510	croak ("out of memory during aio_req allocation");
511		656
512	req->type = REQ_READAHEAD;	657	req->type = REQ_READAHEAD;
		658	req->fh = newSVsv (fh);
513	req->fd = PerlIO_fileno (fh);	659	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
514	req->offset = offset;	660	req->offset = offset;
515	req->length = length;	661	req->length = length;
516	req->callback = SvREFCNT_inc (callback);
517		662
518	send_req (req);	663	send_req (req);
519	}	664	}
520		665
521	void	666	void
…		…
525	ALIAS:	670	ALIAS:
526	aio_stat = REQ_STAT	671	aio_stat = REQ_STAT
527	aio_lstat = REQ_LSTAT	672	aio_lstat = REQ_LSTAT
528	CODE:	673	CODE:
529	{	674	{
530	aio_req req;	675	dREQ;
531
532	Newz (0, req, 1, aio_cb);
533
534	if (!req)
535	croak ("out of memory during aio_req allocation");
536		676
537	New (0, req->statdata, 1, Stat_t);	677	New (0, req->statdata, 1, Stat_t);
538
539	if (!req->statdata)	678	if (!req->statdata)
		679	{
		680	free_req (req);
540	croak ("out of memory during aio_req->statdata allocation");	681	croak ("out of memory during aio_req->statdata allocation");
		682	}
541		683
542	if (SvPOK (fh_or_path))	684	if (SvPOK (fh_or_path))
543	{	685	{
544	req->type = ix;	686	req->type = ix;
545	req->data = newSVsv (fh_or_path);	687	req->data = newSVsv (fh_or_path);
546	req->dataptr = SvPV_nolen (req->data);	688	req->dataptr = SvPVbyte_nolen (req->data);
547	}	689	}
548	else	690	else
549	{	691	{
550	req->type = REQ_FSTAT;	692	req->type = REQ_FSTAT;
		693	req->fh = newSVsv (fh_or_path);
551	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	694	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
552	}	695	}
553
554	req->callback = SvREFCNT_inc (callback);
555		696
556	send_req (req);	697	send_req (req);
557	}	698	}
558		699
559	void	700	void
560	aio_unlink(pathname,callback=&PL_sv_undef)	701	aio_unlink(pathname,callback=&PL_sv_undef)
561	SV * pathname	702	SV * pathname
562	SV * callback	703	SV * callback
		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;
		712	req->data = newSVsv (pathname);
		713	req->dataptr = SvPVbyte_nolen (req->data);
568		714
569	if (!req)	715	send_req (req);
570	croak ("out of memory during aio_req allocation");	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;
571		726
572	req->type = REQ_UNLINK;	727	req->type = REQ_SYMLINK;
		728	req->fh = newSVsv (oldpath);
		729	req->data2ptr = SvPVbyte_nolen (req->fh);
573	req->data = newSVsv (pathname);	730	req->data = newSVsv (newpath);
574	req->dataptr = SvPV_nolen (req->data);	731	req->dataptr = SvPVbyte_nolen (req->data);
575	req->callback = SvREFCNT_inc (callback);
576		732
577	send_req (req);	733	send_req (req);
578	}	734	}
579		735
580	void	736	void

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Comparing IO-AIO/AIO.xs (file contents): Revision 1.9 by root, Tue Jul 12 11:02:54 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 1.9 by root, Tue Jul 12 11:02:54 2005 UTC vs.
Revision 1.28 by root, Wed Aug 17 05:06:59 2005 UTC