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

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.12 by root, Wed Jul 20 21:57:04 2005 UTC vs.
Revision 1.33 by root, Mon Aug 22 23:21:57 2005 UTC

…		…
1	#define _XOPEN_SOURCE 500	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"
		7
		8	#include "autoconf/config.h"
		9
		10	#include <pthread.h>
6		11
7	#include <sys/types.h>	12	#include <sys/types.h>
8	#include <sys/stat.h>	13	#include <sys/stat.h>
9		14
10	#include <unistd.h>	15	#include <unistd.h>
11	#include <fcntl.h>	16	#include <fcntl.h>
12	#include <signal.h>	17	#include <signal.h>
13	#include <sched.h>	18	#include <sched.h>
		19
		20	#if HAVE_SENDFILE
14	#if __linux	21	# if __linux
		22	# include <sys/sendfile.h>
		23	# elif __freebsd
15	#include <sys/syscall.h>	24	# include <sys/socket.h>
		25	# include <sys/uio.h>
		26	# elif __hpux
		27	# include <sys/socket.h>
		28	# endif
16	#endif	29	#endif
17
18	#include <pthread.h>
19
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 ;) */
22	typedef void InOutStream; / hack, but 5.6.1 is simply toooo old ;) */
23		30
24	#if __ia64	31	#if __ia64
25	# define STACKSIZE 65536	32	# define STACKSIZE 65536
26	#else	33	#else
27	# define STACKSIZE 4096	34	# define STACKSIZE 4096
29		36
30	enum {	37	enum {
31	REQ_QUIT,	38	REQ_QUIT,
32	REQ_OPEN, REQ_CLOSE,	39	REQ_OPEN, REQ_CLOSE,
33	REQ_READ, REQ_WRITE, REQ_READAHEAD,	40	REQ_READ, REQ_WRITE, REQ_READAHEAD,
		41	REQ_SENDFILE,
34	REQ_STAT, REQ_LSTAT, REQ_FSTAT, REQ_UNLINK,	42	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
35	REQ_FSYNC, REQ_FDATASYNC,	43	REQ_FSYNC, REQ_FDATASYNC,
		44	REQ_UNLINK, REQ_RMDIR,
		45	REQ_SYMLINK,
36	};	46	};
37		47
38	typedef struct aio_cb {	48	typedef struct aio_cb {
39	struct aio_cb *volatile next;	49	struct aio_cb *volatile next;
40		50
41	int type;	51	int type;
42		52
43	int fd;	53	int fd, fd2;
44	off_t offset;	54	off_t offset;
45	size_t length;	55	size_t length;
46	ssize_t result;	56	ssize_t result;
47	mode_t mode; /* open */	57	mode_t mode; /* open */
48	int errorno;	58	int errorno;
49	SV data, callback;	59	SV data, callback;
50	void *dataptr;	60	SV fh, fh2;
		61	void dataptr, data2ptr;
51	STRLEN dataoffset;	62	STRLEN dataoffset;
52		63
53	Stat_t *statdata;	64	Stat_t *statdata;
54	} aio_cb;	65	} aio_cb;
55		66
56	typedef aio_cb *aio_req;	67	typedef aio_cb *aio_req;
57		68
58	static int started;	69	static int started, wanted;
59	static volatile int nreqs;	70	static volatile int nreqs;
60	static int max_outstanding = 1<<30;	71	static int max_outstanding = 1<<30;
61	static int respipe [2];	72	static int respipe [2];
62		73
63	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	74	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;
64	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;	75	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
65	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	76	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
66		77
67	static volatile aio_req reqs, reqe; /* queue start, queue end */	78	static volatile aio_req reqs, reqe; /* queue start, queue end */
68	static volatile aio_req ress, rese; /* queue start, queue end */	79	static volatile aio_req ress, rese; /* queue start, queue end */
		80
		81	static void free_req (aio_req req)
		82	{
		83	if (req->data)
		84	SvREFCNT_dec (req->data);
		85
		86	if (req->fh)
		87	SvREFCNT_dec (req->fh);
		88
		89	if (req->fh2)
		90	SvREFCNT_dec (req->fh2);
		91
		92	if (req->statdata)
		93	Safefree (req->statdata);
		94
		95	if (req->callback)
		96	SvREFCNT_dec (req->callback);
		97
		98	Safefree (req);
		99	}
69		100
70	static void	101	static void
71	poll_wait ()	102	poll_wait ()
72	{	103	{
73	if (nreqs && !ress)	104	if (nreqs && !ress)
…		…
83	static int	114	static int
84	poll_cb ()	115	poll_cb ()
85	{	116	{
86	dSP;	117	dSP;
87	int count = 0;	118	int count = 0;
		119	int do_croak = 0;
88	aio_req req, prv;	120	aio_req req;
89		121
90	pthread_mutex_lock (&reslock);	122	for (;;)
91
92	{
93	/* read any signals sent by the worker threads */
94	char buf [32];
95	while (read (respipe [0], buf, 32) > 0)
96	;
97	}
98
99	req = ress;
100	ress = rese = 0;
101
102	pthread_mutex_unlock (&reslock);
103
104	while (req)
105	{	123	{
		124	pthread_mutex_lock (&reslock);
		125	req = ress;
		126
		127	if (req)
		128	{
		129	ress = req->next;
		130
		131	if (!ress)
		132	{
		133	/* read any signals sent by the worker threads */
		134	char buf [32];
		135	while (read (respipe [0], buf, 32) == 32)
		136	;
		137
		138	rese = 0;
		139	}
		140	}
		141
		142	pthread_mutex_unlock (&reslock);
		143
		144	if (!req)
		145	break;
		146
106	nreqs--;	147	nreqs--;
107		148
108	if (req->type == REQ_QUIT)	149	if (req->type == REQ_QUIT)
109	started--;	150	started--;
110	else	151	else
111	{	152	{
112	int errorno = errno;	153	int errorno = errno;
113	errno = req->errorno;	154	errno = req->errorno;
114		155
115	if (req->type == REQ_READ)	156	if (req->type == REQ_READ)
116	SvCUR_set (req->data, req->dataoffset	157	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
117	+ req->result > 0 ? req->result : 0);
118		158
		159	if (req->data2ptr && (req->type == REQ_READ \|\| req->type == REQ_WRITE))
		160	SvREADONLY_off (req->data);
		161
119	if (req->data)	162	if (req->statdata)
120	SvREFCNT_dec (req->data);
121
122	if (req->type == REQ_STAT \|\| req->type == REQ_LSTAT \|\| req->type == REQ_FSTAT)
123	{	163	{
124	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	164	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
125	PL_laststatval = req->result;	165	PL_laststatval = req->result;
126	PL_statcache = *(req->statdata);	166	PL_statcache = *(req->statdata);
127
128	Safefree (req->statdata);
129	}	167	}
130		168
		169	ENTER;
131	PUSHMARK (SP);	170	PUSHMARK (SP);
132	XPUSHs (sv_2mortal (newSViv (req->result)));	171	XPUSHs (sv_2mortal (newSViv (req->result)));
133		172
134	if (req->type == REQ_OPEN)	173	if (req->type == REQ_OPEN)
135	{	174	{
…		…
138		177
139	PUTBACK;	178	PUTBACK;
140	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);	179	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);
141	SPAGAIN;	180	SPAGAIN;
142		181
143	fh = POPs;	182	fh = SvREFCNT_inc (POPs);
144		183
145	PUSHMARK (SP);	184	PUSHMARK (SP);
146	XPUSHs (fh);	185	XPUSHs (sv_2mortal (fh));
147	}	186	}
148		187
149	if (SvOK (req->callback))	188	if (SvOK (req->callback))
150	{	189	{
151	PUTBACK;	190	PUTBACK;
152	call_sv (req->callback, G_VOID \| G_EVAL);	191	call_sv (req->callback, G_VOID \| G_EVAL);
153	SPAGAIN;	192	SPAGAIN;
		193
		194	if (SvTRUE (ERRSV))
		195	{
		196	free_req (req);
		197	croak (0);
		198	}
154	}	199	}
		200
155		201	LEAVE;
156	if (req->callback)
157	SvREFCNT_dec (req->callback);
158		202
159	errno = errorno;	203	errno = errorno;
160	count++;	204	count++;
161	}	205	}
162		206
163	prv = req;	207	free_req (req);
164	req = req->next;
165	Safefree (prv);
166
167	/* TODO: croak on errors? */
168	}	208	}
169		209
170	return count;	210	return count;
171	}	211	}
172		212
…		…
193	}	233	}
194		234
195	static void	235	static void
196	send_req (aio_req req)	236	send_req (aio_req req)
197	{	237	{
		238	while (started < wanted && nreqs >= started)
		239	start_thread ();
		240
198	nreqs++;	241	nreqs++;
199		242
200	pthread_mutex_lock (&reqlock);	243	pthread_mutex_lock (&reqlock);
201		244
202	req->next = 0;	245	req->next = 0;
…		…
210	reqe = reqs = req;	253	reqe = reqs = req;
211		254
212	pthread_cond_signal (&reqwait);	255	pthread_cond_signal (&reqwait);
213	pthread_mutex_unlock (&reqlock);	256	pthread_mutex_unlock (&reqlock);
214		257
215	while (nreqs > max_outstanding)	258	if (nreqs > max_outstanding)
		259	for (;;)
		260	{
		261	poll_cb ();
		262
		263	if (nreqs <= max_outstanding)
		264	break;
		265
		266	poll_wait ();
		267	}
		268	}
		269
		270	static void
		271	end_thread (void)
		272	{
		273	aio_req req;
		274	Newz (0, req, 1, aio_cb);
		275	req->type = REQ_QUIT;
		276
		277	send_req (req);
		278	}
		279
		280	static void min_parallel (int nthreads)
		281	{
		282	if (wanted < nthreads)
		283	wanted = nthreads;
		284	}
		285
		286	static void max_parallel (int nthreads)
		287	{
		288	int cur = started;
		289
		290	if (wanted > nthreads)
		291	wanted = nthreads;
		292
		293	while (cur > wanted)
		294	{
		295	end_thread ();
		296	cur--;
		297	}
		298
		299	while (started > wanted)
216	{	300	{
217	poll_wait ();	301	poll_wait ();
218	poll_cb ();	302	poll_cb ();
219	}	303	}
220	}	304	}
221		305
222	static void	306	static void create_pipe ()
223	end_thread (void)
224	{	307	{
		308	if (pipe (respipe))
		309	croak ("unable to initialize result pipe");
		310
		311	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
		312	croak ("cannot set result pipe to nonblocking mode");
		313
		314	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
		315	croak ("cannot set result pipe to nonblocking mode");
		316	}
		317
		318	static void atfork_prepare (void)
		319	{
		320	pthread_mutex_lock (&reqlock);
		321	pthread_mutex_lock (&reslock);
		322	}
		323
		324	static void atfork_parent (void)
		325	{
		326	pthread_mutex_unlock (&reslock);
		327	pthread_mutex_unlock (&reqlock);
		328	}
		329
		330	static void atfork_child (void)
		331	{
225	aio_req req;	332	aio_req prv;
226	New (0, req, 1, aio_cb);
227	req->type = REQ_QUIT;
228		333
229	send_req (req);	334	started = 0;
230	}
231		335
232	static void	336	while (reqs)
233	read_write (int dowrite, int fd, off_t offset, size_t length,
234	SV data, STRLEN dataoffset, SV callback)
235	{
236	aio_req req;
237	STRLEN svlen;
238	char *svptr = SvPV (data, svlen);
239
240	SvUPGRADE (data, SVt_PV);
241	SvPOK_on (data);
242
243	if (dataoffset < 0)
244	dataoffset += svlen;
245
246	if (dataoffset < 0 \|\| dataoffset > svlen)
247	croak ("data offset outside of string");
248
249	if (dowrite)
250	{	337	{
251	/* write: check length and adjust. */	338	prv = reqs;
252	if (length < 0 \|\| length + dataoffset > svlen)	339	reqs = prv->next;
253	length = svlen - dataoffset;	340	free_req (prv);
254	}	341	}
255	else	342
		343	reqs = reqe = 0;
		344
		345	while (ress)
256	{	346	{
257	/* read: grow scalar as necessary */	347	prv = ress;
258	svptr = SvGROW (data, length + dataoffset);	348	ress = prv->next;
		349	free_req (prv);
259	}	350	}
		351
		352	ress = rese = 0;
260		353
261	if (length < 0)	354	close (respipe [0]);
262	croak ("length must not be negative");	355	close (respipe [1]);
		356	create_pipe ();
263		357
264	Newz (0, req, 1, aio_cb);	358	atfork_parent ();
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	}	359	}
		360
		361	/*****************************************************************************/
		362	/* work around various missing functions */
		363
		364	#if !HAVE_PREADWRITE
		365	# define pread aio_pread
		366	# define pwrite aio_pwrite
		367
		368	/*
		369	* make our pread/pwrite safe against themselves, but not against
		370	* normal read/write by using a mutex. slows down execution a lot,
		371	* but that's your problem, not mine.
		372	*/
		373	static pthread_mutex_t iolock = PTHREAD_MUTEX_INITIALIZER;
		374
		375	static ssize_t
		376	pread (int fd, void *buf, size_t count, off_t offset)
		377	{
		378	ssize_t res;
		379	off_t ooffset;
		380
		381	pthread_mutex_lock (&iolock);
		382	ooffset = lseek (fd, 0, SEEK_CUR);
		383	lseek (fd, offset, SEEK_SET);
		384	res = read (fd, buf, count);
		385	lseek (fd, ooffset, SEEK_SET);
		386	pthread_mutex_unlock (&iolock);
		387
		388	return res;
		389	}
		390
		391	static ssize_t
		392	pwrite (int fd, void *buf, size_t count, off_t offset)
		393	{
		394	ssize_t res;
		395	off_t ooffset;
		396
		397	pthread_mutex_lock (&iolock);
		398	ooffset = lseek (fd, 0, SEEK_CUR);
		399	lseek (fd, offset, SEEK_SET);
		400	res = write (fd, buf, count);
		401	lseek (fd, offset, SEEK_SET);
		402	pthread_mutex_unlock (&iolock);
		403
		404	return res;
		405	}
		406	#endif
		407
		408	#if !HAVE_FDATASYNC
		409	# define fdatasync fsync
		410	#endif
		411
		412	#if !HAVE_READAHEAD
		413	# define readahead aio_readahead
		414
		415	static char readahead_buf[4096];
		416
		417	static ssize_t
		418	readahead (int fd, off_t offset, size_t count)
		419	{
		420	while (count > 0)
		421	{
		422	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
		423
		424	pread (fd, readahead_buf, len, offset);
		425	offset += len;
		426	count -= len;
		427	}
		428
		429	errno = 0;
		430	}
		431	#endif
		432
		433	/* sendfile always needs emulation */
		434	static ssize_t
		435	sendfile_ (int ofd, int ifd, off_t offset, size_t count)
		436	{
		437	ssize_t res;
		438
		439	if (!count)
		440	return 0;
		441
		442	#if __linux
		443	res = sendfile (ofd, ifd, &offset, count);
		444
		445	#elif __freebsd
		446	/*
		447	* Of course, the freebsd sendfile is a dire hack with no thoughts
		448	* wasted on making it similar to other i/o functions.
		449	*/
		450	{
		451	off_t sbytes;
		452	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
		453
		454	if (!res && errno == EAGAIN)
		455	/* maybe on others, too, as usual, the manpage leaves you guessing */
		456	res = sbytes;
		457	}
		458
		459	#elif __hpux
		460	res = sendfile (ofd, ifd, offset, count, 0, 0);
		461
		462	#else
		463	res = -1;
		464	errno = ENOSYS;
		465	#endif
		466
		467	if (res < 0 && (errno == ENOSYS \|\| errno == EINVAL \|\| errno == ENOTSOCK))
		468	{
		469	/* emulate sendfile. this is a major pain in the ass */
		470	char *buf = malloc (4096);
		471	res = 0;
		472
		473	for (;;)
		474	{
		475	ssize_t cnt;
		476
		477	cnt = pread (ifd, buf, 4096, offset);
		478
		479	if (cnt <= 0)
		480	{
		481	if (cnt && !res) res = -1;
		482	break;
		483	}
		484
		485	cnt = write (ofd, buf, cnt);
		486
		487	if (cnt <= 0)
		488	{
		489	if (cnt && !res) res = -1;
		490	break;
		491	}
		492
		493	offset += cnt;
		494	res += cnt;
		495	}
		496
		497	{
		498	int errorno = errno;
		499	free (buf);
		500	errno = errorno;
		501	}
		502	}
		503
		504	return res;
		505	}
		506
		507	/*****************************************************************************/
279		508
280	static void *	509	static void *
281	aio_proc (void *thr_arg)	510	aio_proc (void *thr_arg)
282	{	511	{
283	aio_req req;	512	aio_req req;
…		…
311		540
312	switch (type)	541	switch (type)
313	{	542	{
314	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;	543	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
315	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;	544	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
316	#if SYS_readahead	545
317	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	546	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
318	#else	547	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
319	case REQ_READAHEAD: req->result = -1; errno = ENOSYS; break;
320	#endif
321		548
322	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	549	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
323	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	550	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
324	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	551	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
325		552
326	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;	553	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
327	case REQ_CLOSE: req->result = close (req->fd); break;	554	case REQ_CLOSE: req->result = close (req->fd); break;
328	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	555	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
		556	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
		557	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
329		558
		559	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
330	case REQ_FSYNC: req->result = fsync (req->fd); break;	560	case REQ_FSYNC: req->result = fsync (req->fd); break;
331	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
332		561
333	case REQ_QUIT:	562	case REQ_QUIT:
334	break;	563	break;
335		564
336	default:	565	default:
…		…
362	while (type != REQ_QUIT);	591	while (type != REQ_QUIT);
363		592
364	return 0;	593	return 0;
365	}	594	}
366		595
		596	#define dREQ \
		597	aio_req req; \
		598	\
		599	if (SvOK (callback) && !SvROK (callback)) \
		600	croak ("clalback must be undef or of reference type"); \
		601	\
		602	Newz (0, req, 1, aio_cb); \
		603	if (!req) \
		604	croak ("out of memory during aio_req allocation"); \
		605	\
		606	req->callback = newSVsv (callback);
		607
367	MODULE = IO::AIO PACKAGE = IO::AIO	608	MODULE = IO::AIO PACKAGE = IO::AIO
368		609
369	PROTOTYPES: ENABLE	610	PROTOTYPES: ENABLE
370		611
371	BOOT:	612	BOOT:
372	{	613	{
373	if (pipe (respipe))	614	create_pipe ();
374	croak ("unable to initialize result pipe");	615	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	}	616	}
382		617
383	void	618	void
384	min_parallel(nthreads)	619	min_parallel(nthreads)
385	int nthreads	620	int nthreads
386	PROTOTYPE: $	621	PROTOTYPE: $
387	CODE:
388	while (nthreads > started)
389	start_thread ();
390		622
391	void	623	void
392	max_parallel(nthreads)	624	max_parallel(nthreads)
393	int nthreads	625	int nthreads
394	PROTOTYPE: $	626	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		627
411	int	628	int
412	max_outstanding(nreqs)	629	max_outstanding(nreqs)
413	int nreqs	630	int nreqs
414	PROTOTYPE: $	631	PROTOTYPE: $
…		…
423	int mode	640	int mode
424	SV * callback	641	SV * callback
425	PROTOTYPE: $$$;$	642	PROTOTYPE: $$$;$
426	CODE:	643	CODE:
427	{	644	{
428	aio_req req;	645	dREQ;
429
430	Newz (0, req, 1, aio_cb);
431
432	if (!req)
433	croak ("out of memory during aio_req allocation");
434		646
435	req->type = REQ_OPEN;	647	req->type = REQ_OPEN;
436	req->data = newSVsv (pathname);	648	req->data = newSVsv (pathname);
437	req->dataptr = SvPV_nolen (req->data);	649	req->dataptr = SvPVbyte_nolen (req->data);
438	req->fd = flags;	650	req->fd = flags;
439	req->mode = mode;	651	req->mode = mode;
440	req->callback = SvREFCNT_inc (callback);
441		652
442	send_req (req);	653	send_req (req);
443	}	654	}
444		655
445	void	656	void
446	aio_close(fh,callback=&PL_sv_undef)	657	aio_close(fh,callback=&PL_sv_undef)
447	InputStream fh	658	SV * fh
448	SV * callback	659	SV * callback
449	PROTOTYPE: $;$	660	PROTOTYPE: $;$
450	ALIAS:	661	ALIAS:
451	aio_close = REQ_CLOSE	662	aio_close = REQ_CLOSE
452	aio_fsync = REQ_FSYNC	663	aio_fsync = REQ_FSYNC
453	aio_fdatasync = REQ_FDATASYNC	664	aio_fdatasync = REQ_FDATASYNC
454	CODE:	665	CODE:
455	{	666	{
456	aio_req req;	667	dREQ;
457
458	Newz (0, req, 1, aio_cb);
459
460	if (!req)
461	croak ("out of memory during aio_req allocation");
462		668
463	req->type = ix;	669	req->type = ix;
		670	req->fh = newSVsv (fh);
464	req->fd = PerlIO_fileno (fh);	671	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
465	req->callback = SvREFCNT_inc (callback);
466		672
467	send_req (req);	673	send_req (req);
468	}	674	}
469		675
470	void	676	void
471	aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	677	aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
472	InputStream fh	678	SV * fh
473	UV offset	679	UV offset
474	IV length	680	UV length
475	SV * data	681	SV * data
476	IV dataoffset	682	UV dataoffset
477	SV * callback	683	SV * callback
		684	ALIAS:
		685	aio_read = REQ_READ
		686	aio_write = REQ_WRITE
478	PROTOTYPE: $$$$$;$	687	PROTOTYPE: $$$$$;$
479	CODE:	688	CODE:
480	read_write (0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);	689	{
		690	aio_req req;
		691	STRLEN svlen;
		692	char *svptr = SvPVbyte (data, svlen);
481		693
		694	SvUPGRADE (data, SVt_PV);
		695	SvPOK_on (data);
		696
		697	if (dataoffset < 0)
		698	dataoffset += svlen;
		699
		700	if (dataoffset < 0 \|\| dataoffset > svlen)
		701	croak ("data offset outside of string");
		702
		703	if (ix == REQ_WRITE)
		704	{
		705	/* write: check length and adjust. */
		706	if (length < 0 \|\| length + dataoffset > svlen)
		707	length = svlen - dataoffset;
		708	}
		709	else
		710	{
		711	/* read: grow scalar as necessary */
		712	svptr = SvGROW (data, length + dataoffset);
		713	}
		714
		715	if (length < 0)
		716	croak ("length must not be negative");
		717
		718	{
		719	dREQ;
		720
		721	req->type = ix;
		722	req->fh = newSVsv (fh);
		723	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
		724	: IoOFP (sv_2io (fh)));
		725	req->offset = offset;
		726	req->length = length;
		727	req->data = SvREFCNT_inc (data);
		728	req->dataptr = (char *)svptr + dataoffset;
		729
		730	if (!SvREADONLY (data))
		731	{
		732	SvREADONLY_on (data);
		733	req->data2ptr = (void *)data;
		734	}
		735
		736	send_req (req);
		737	}
		738	}
		739
482	void	740	void
483	aio_write(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	741	aio_sendfile(out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)
484	OutputStream fh	742	SV * out_fh
		743	SV * in_fh
485	UV offset	744	UV in_offset
486	IV length	745	UV length
487	SV * data
488	IV dataoffset
489	SV * callback	746	SV * callback
490	PROTOTYPE: $$$$$;$	747	PROTOTYPE: $$$$;$
491	CODE:	748	CODE:
492	read_write (1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);	749	{
		750	dREQ;
		751
		752	req->type = REQ_SENDFILE;
		753	req->fh = newSVsv (out_fh);
		754	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
		755	req->fh2 = newSVsv (in_fh);
		756	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
		757	req->offset = in_offset;
		758	req->length = length;
		759
		760	send_req (req);
		761	}
493		762
494	void	763	void
495	aio_readahead(fh,offset,length,callback=&PL_sv_undef)	764	aio_readahead(fh,offset,length,callback=&PL_sv_undef)
496	InputStream fh	765	SV * fh
497	UV offset	766	UV offset
498	IV length	767	IV length
499	SV * callback	768	SV * callback
500	PROTOTYPE: $$$;$	769	PROTOTYPE: $$$;$
501	CODE:	770	CODE:
502	{	771	{
503	aio_req req;	772	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		773
513	req->type = REQ_READAHEAD;	774	req->type = REQ_READAHEAD;
		775	req->fh = newSVsv (fh);
514	req->fd = PerlIO_fileno (fh);	776	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
515	req->offset = offset;	777	req->offset = offset;
516	req->length = length;	778	req->length = length;
517	req->callback = SvREFCNT_inc (callback);
518		779
519	send_req (req);	780	send_req (req);
520	}	781	}
521		782
522	void	783	void
…		…
526	ALIAS:	787	ALIAS:
527	aio_stat = REQ_STAT	788	aio_stat = REQ_STAT
528	aio_lstat = REQ_LSTAT	789	aio_lstat = REQ_LSTAT
529	CODE:	790	CODE:
530	{	791	{
531	aio_req req;	792	dREQ;
532
533	Newz (0, req, 1, aio_cb);
534
535	if (!req)
536	croak ("out of memory during aio_req allocation");
537		793
538	New (0, req->statdata, 1, Stat_t);	794	New (0, req->statdata, 1, Stat_t);
539
540	if (!req->statdata)	795	if (!req->statdata)
		796	{
		797	free_req (req);
541	croak ("out of memory during aio_req->statdata allocation");	798	croak ("out of memory during aio_req->statdata allocation");
		799	}
542		800
543	if (SvPOK (fh_or_path))	801	if (SvPOK (fh_or_path))
544	{	802	{
545	req->type = ix;	803	req->type = ix;
546	req->data = newSVsv (fh_or_path);	804	req->data = newSVsv (fh_or_path);
547	req->dataptr = SvPV_nolen (req->data);	805	req->dataptr = SvPVbyte_nolen (req->data);
548	}	806	}
549	else	807	else
550	{	808	{
551	req->type = REQ_FSTAT;	809	req->type = REQ_FSTAT;
		810	req->fh = newSVsv (fh_or_path);
552	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	811	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
553	}	812	}
554
555	req->callback = SvREFCNT_inc (callback);
556		813
557	send_req (req);	814	send_req (req);
558	}	815	}
559		816
560	void	817	void
561	aio_unlink(pathname,callback=&PL_sv_undef)	818	aio_unlink(pathname,callback=&PL_sv_undef)
562	SV * pathname	819	SV * pathname
563	SV * callback	820	SV * callback
		821	ALIAS:
		822	aio_unlink = REQ_UNLINK
		823	aio_rmdir = REQ_RMDIR
564	CODE:	824	CODE:
565	{	825	{
566	aio_req req;	826	dREQ;
567		827
568	Newz (0, req, 1, aio_cb);	828	req->type = ix;
		829	req->data = newSVsv (pathname);
		830	req->dataptr = SvPVbyte_nolen (req->data);
569		831
570	if (!req)	832	send_req (req);
571	croak ("out of memory during aio_req allocation");	833	}
		834
		835	void
		836	aio_symlink(oldpath,newpath,callback=&PL_sv_undef)
		837	SV * oldpath
		838	SV * newpath
		839	SV * callback
		840	CODE:
		841	{
		842	dREQ;
572		843
573	req->type = REQ_UNLINK;	844	req->type = REQ_SYMLINK;
		845	req->fh = newSVsv (oldpath);
		846	req->data2ptr = SvPVbyte_nolen (req->fh);
574	req->data = newSVsv (pathname);	847	req->data = newSVsv (newpath);
575	req->dataptr = SvPV_nolen (req->data);	848	req->dataptr = SvPVbyte_nolen (req->data);
576	req->callback = SvREFCNT_inc (callback);
577		849
578	send_req (req);	850	send_req (req);
579	}	851	}
580		852
581	void	853	void

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Comparing IO-AIO/AIO.xs (file contents): Revision 1.12 by root, Wed Jul 20 21:57:04 2005 UTC vs. Revision 1.33 by root, Mon Aug 22 23:21:57 2005 UTC

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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.12 by root, Wed Jul 20 21:57:04 2005 UTC vs.
Revision 1.33 by root, Mon Aug 22 23:21:57 2005 UTC