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

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.3 by root, Sun Jul 10 20:07:11 2005 UTC vs.
Revision 1.24 by root, Wed Aug 17 03:01:56 2005 UTC

…		…
1	#define PERL_NO_GET_CONTEXT	1	#define _REENTRANT 1
		2	#include <errno.h>
2		3
3	#include "EXTERN.h"	4	#include "EXTERN.h"
4	#include "perl.h"	5	#include "perl.h"
5	#include "XSUB.h"	6	#include "XSUB.h"
6		7
		8	#include "autoconf/config.h"
		9
7	#include <sys/types.h>	10	#include <sys/types.h>
8	#include <sys/stat.h>	11	#include <sys/stat.h>
		12
9	#include <unistd.h>	13	#include <unistd.h>
10	#include <fcntl.h>	14	#include <fcntl.h>
11	#include <signal.h>	15	#include <signal.h>
12	#include <sched.h>	16	#include <sched.h>
13	#include <endian.h>
14		17
15	#include <pthread.h>	18	#include <pthread.h>
16	#include <sys/syscall.h>
17		19
18	typedef void InputStream; / hack, but 5.6.1 is simply toooo old ;) */	20	typedef void InputStream; / hack, but 5.6.1 is simply toooo old ;) */
19	typedef void OutputStream; / hack, but 5.6.1 is simply toooo old ;) */	21	typedef void OutputStream; / hack, but 5.6.1 is simply toooo old ;) */
20	typedef void InOutStream; / hack, but 5.6.1 is simply toooo old ;) */	22	typedef void InOutStream; / hack, but 5.6.1 is simply toooo old ;) */
21		23
22	#if __i386 \|\| __amd64
23	# define STACKSIZE ( 256 * sizeof (long))
24	#elif __ia64	24	#if __ia64
25	# define STACKSIZE (8192 * sizeof (long))	25	# define STACKSIZE 65536
26	#else	26	#else
27	# define STACKSIZE ( 512 * sizeof (long))	27	# define STACKSIZE 4096
28	#endif	28	#endif
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;
59	static int nreqs;	61	static volatile int nreqs;
		62	static int max_outstanding = 1<<30;
60	static int respipe [2];	63	static int respipe [2];
61		64
62	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	65	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;
63	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;	66	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
		67	static pthread_mutex_t frklock = PTHREAD_MUTEX_INITIALIZER;
64	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	68	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
65		69
66	static volatile aio_req reqs, reqe; /* queue start, queue end */	70	static volatile aio_req reqs, reqe; /* queue start, queue end */
67	static volatile aio_req ress, rese; /* queue start, queue end */	71	static volatile aio_req ress, rese; /* queue start, queue end */
		72
		73	static void
		74	poll_wait ()
		75	{
		76	if (nreqs && !ress)
		77	{
		78	fd_set rfd;
		79	FD_ZERO(&rfd);
		80	FD_SET(respipe [0], &rfd);
		81
		82	select (respipe [0] + 1, &rfd, 0, 0, 0);
		83	}
		84	}
		85
		86	static int
		87	poll_cb ()
		88	{
		89	dSP;
		90	int count = 0;
		91	int do_croak = 0;
		92	aio_req req, prv;
		93
		94	pthread_mutex_lock (&reslock);
		95
		96	{
		97	/* read any signals sent by the worker threads */
		98	char buf [32];
		99	while (read (respipe [0], buf, 32) == 32)
		100	;
		101	}
		102
		103	req = ress;
		104	ress = rese = 0;
		105
		106	pthread_mutex_unlock (&reslock);
		107
		108	while (req)
		109	{
		110	nreqs--;
		111
		112	if (req->type == REQ_QUIT)
		113	started--;
		114	else
		115	{
		116	int errorno = errno;
		117	errno = req->errorno;
		118
		119	if (req->type == REQ_READ)
		120	SvCUR_set (req->data, req->dataoffset
		121	+ req->result > 0 ? req->result : 0);
		122
		123	if (req->data)
		124	SvREFCNT_dec (req->data);
		125
		126	if (req->fh)
		127	SvREFCNT_dec (req->fh);
		128
		129	if (req->type == REQ_STAT \|\| req->type == REQ_LSTAT \|\| req->type == REQ_FSTAT)
		130	{
		131	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
		132	PL_laststatval = req->result;
		133	PL_statcache = *(req->statdata);
		134
		135	Safefree (req->statdata);
		136	}
		137
		138	ENTER;
		139	PUSHMARK (SP);
		140	XPUSHs (sv_2mortal (newSViv (req->result)));
		141
		142	if (req->type == REQ_OPEN)
		143	{
		144	/* convert fd to fh */
		145	SV *fh;
		146
		147	PUTBACK;
		148	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);
		149	SPAGAIN;
		150
		151	fh = SvREFCNT_inc (POPs);
		152
		153	PUSHMARK (SP);
		154	XPUSHs (sv_2mortal (fh));
		155	}
		156
		157	if (SvOK (req->callback))
		158	{
		159	PUTBACK;
		160	call_sv (req->callback, G_VOID \| G_EVAL);
		161	SPAGAIN;
		162	}
		163
		164	do_croak = SvTRUE (ERRSV);
		165
		166	LEAVE;
		167
		168	if (req->callback)
		169	SvREFCNT_dec (req->callback);
		170
		171	errno = errorno;
		172	count++;
		173	}
		174
		175	prv = req;
		176	req = req->next;
		177	Safefree (prv);
		178
		179	if (do_croak)
		180	croak (0);
		181	}
		182
		183	return count;
		184	}
68		185
69	static void aio_proc(void arg);	186	static void aio_proc(void arg);
70		187
71	static void	188	static void
72	start_thread (void)	189	start_thread (void)
…		…
105	else	222	else
106	reqe = reqs = req;	223	reqe = reqs = req;
107		224
108	pthread_cond_signal (&reqwait);	225	pthread_cond_signal (&reqwait);
109	pthread_mutex_unlock (&reqlock);	226	pthread_mutex_unlock (&reqlock);
		227
		228	while (nreqs > max_outstanding)
		229	{
		230	poll_wait ();
		231	poll_cb ();
		232	}
110	}	233	}
111		234
112	static void	235	static void
113	end_thread (void)	236	end_thread (void)
114	{	237	{
…		…
117	req->type = REQ_QUIT;	240	req->type = REQ_QUIT;
118		241
119	send_req (req);	242	send_req (req);
120	}	243	}
121		244
122	static void
123	read_write (pTHX_
124	int dowrite, int fd, off_t offset, size_t length,
125	SV data, STRLEN dataoffset, SV callback)
126	{
127	aio_req req;
128	STRLEN svlen;
129	char *svptr = SvPV (data, svlen);
130		245
131	SvUPGRADE (data, SVt_PV);	246	static void min_parallel (int nthreads)
132	SvPOK_on (data);	247	{
		248	while (nthreads > started)
		249	start_thread ();
		250	}
133		251
134	if (dataoffset < 0)	252	static void max_parallel (int nthreads)
135	dataoffset += svlen;	253	{
		254	int cur = started;
		255	while (cur > nthreads)
		256	{
		257	end_thread ();
		258	cur--;
		259	}
136		260
137	if (dataoffset < 0 \|\| dataoffset > svlen)	261	while (started > nthreads)
138	croak ("data offset outside of string");
139
140	if (dowrite)
141	{	262	{
142	/* write: check length and adjust. */	263	poll_wait ();
143	if (length < 0 \|\| length + dataoffset > svlen)	264	poll_cb ();
144	length = svlen - dataoffset;
145	}	265	}
146	else	266	}
		267
		268	static int fork_started;
		269
		270	static void atfork_prepare (void)
		271	{
		272	pthread_mutex_lock (&frklock);
		273
		274	fork_started = started;
		275
		276	for (;;) {
		277	while (nreqs)
		278	{
		279	poll_wait ();
		280	poll_cb ();
		281	}
		282
		283	max_parallel (0);
		284
		285	pthread_mutex_lock (&reqlock);
		286
		287	if (!nreqs && !started)
		288	break;
		289
		290	pthread_mutex_unlock (&reqlock);
		291
		292	min_parallel (fork_started);
		293	}
		294
		295	pthread_mutex_lock (&reslock);
		296
		297	assert (!started);
		298	assert (!nreqs);
		299	assert (!reqs && !reqe);
		300	assert (!ress && !rese);
		301	}
		302
		303	static void atfork_parent (void)
		304	{
		305	pthread_mutex_unlock (&reslock);
		306	min_parallel (fork_started);
		307	pthread_mutex_unlock (&reqlock);
		308	pthread_mutex_unlock (&frklock);
		309	}
		310
		311	static void atfork_child (void)
		312	{
		313	reqs = reqe = 0;
		314
		315	atfork_parent ();
		316	}
		317
		318	/*****************************************************************************/
		319	/* work around various missing functions */
		320
		321	#if !HAVE_PREADWRITE
		322	# define pread aio_pread
		323	# define pwrite aio_pwrite
		324
		325	/*
		326	* make our pread/pwrite safe against themselves, but not against
		327	* normal read/write by using a mutex. slows down execution a lot,
		328	* but that's your problem, not mine.
		329	*/
		330	static pthread_mutex_t iolock = PTHREAD_MUTEX_INITIALIZER;
		331
		332	static ssize_t
		333	pread (int fd, void *buf, size_t count, off_t offset)
		334	{
		335	ssize_t res;
		336	off_t ooffset;
		337
		338	pthread_mutex_lock (&iolock);
		339	ooffset = lseek (fd, 0, SEEK_CUR);
		340	lseek (fd, offset, SEEK_SET);
		341	res = read (fd, buf, count);
		342	lseek (fd, ooffset, SEEK_SET);
		343	pthread_mutex_unlock (&iolock);
		344
		345	return res;
		346	}
		347
		348	static ssize_t
		349	pwrite (int fd, void *buf, size_t count, off_t offset)
		350	{
		351	ssize_t res;
		352	off_t ooffset;
		353
		354	pthread_mutex_lock (&iolock);
		355	ooffset = lseek (fd, 0, SEEK_CUR);
		356	lseek (fd, offset, SEEK_SET);
		357	res = write (fd, buf, count);
		358	lseek (fd, offset, SEEK_SET);
		359	pthread_mutex_unlock (&iolock);
		360
		361	return res;
		362	}
		363	#endif
		364
		365	#if !HAVE_FDATASYNC
		366	# define fdatasync fsync
		367	#endif
		368
		369	#if !HAVE_READAHEAD
		370	# define readahead aio_readahead
		371
		372	static char readahead_buf[4096];
		373
		374	static ssize_t
		375	readahead (int fd, off_t offset, size_t count)
		376	{
		377	while (count > 0)
147	{	378	{
148	/* read: grow scalar as necessary */	379	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
149	svptr = SvGROW (data, length + dataoffset);	380
		381	pread (fd, readahead_buf, len, offset);
		382	offset += len;
		383	count -= len;
150	}	384	}
151		385
152	if (length < 0)	386	errno = 0;
153	croak ("length must not be negative");
154
155	Newz (0, req, 1, aio_cb);
156
157	if (!req)
158	croak ("out of memory during aio_req allocation");
159
160	req->type = dowrite ? REQ_WRITE : REQ_READ;
161	req->fd = fd;
162	req->offset = offset;
163	req->length = length;
164	req->data = SvREFCNT_inc (data);
165	req->dataptr = (char *)svptr + dataoffset;
166	req->callback = SvREFCNT_inc (callback);
167
168	send_req (req);
169	}	387	}
		388	#endif
170		389
171	static void	390	/*****************************************************************************/
172	poll_wait ()
173	{
174	if (!nreqs)
175	return;
176
177	fd_set rfd;
178	FD_ZERO(&rfd);
179	FD_SET(respipe [0], &rfd);
180
181	select (respipe [0] + 1, &rfd, 0, 0, 0);
182	}
183
184	static int
185	poll_cb (pTHX)
186	{
187	dSP;
188	int count = 0;
189	aio_req req;
190
191	{
192	/* read and signals sent by the worker threads */
193	char buf [32];
194	while (read (respipe [0], buf, 32) > 0)
195	;
196	}
197
198	for (;;)
199	{
200	pthread_mutex_lock (&reslock);
201
202	req = ress;
203
204	if (ress)
205	{
206	ress = ress->next;
207	if (!ress) rese = 0;
208	}
209
210	pthread_mutex_unlock (&reslock);
211
212	if (!req)
213	break;
214
215	nreqs--;
216
217	if (req->type == REQ_QUIT)
218	started--;
219	else
220	{
221	int errorno = errno;
222	errno = req->errorno;
223
224	if (req->type == REQ_READ)
225	SvCUR_set (req->data, req->dataoffset
226	+ req->result > 0 ? req->result : 0);
227
228	if (req->data)
229	SvREFCNT_dec (req->data);
230
231	if (req->type == REQ_STAT \|\| req->type == REQ_LSTAT \|\| req->type == REQ_FSTAT)
232	{
233	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
234	PL_laststatval = req->result;
235	PL_statcache = *(req->statdata);
236
237	Safefree (req->statdata);
238	}
239
240	PUSHMARK (SP);
241	XPUSHs (sv_2mortal (newSViv (req->result)));
242
243	if (req->type == REQ_OPEN)
244	{
245	/* convert fd to fh */
246	SV *fh;
247
248	PUTBACK;
249	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);
250	SPAGAIN;
251
252	fh = POPs;
253
254	PUSHMARK (SP);
255	XPUSHs (fh);
256	}
257
258	PUTBACK;
259	call_sv (req->callback, G_VOID \| G_EVAL);
260	SPAGAIN;
261
262	if (req->callback)
263	SvREFCNT_dec (req->callback);
264
265	errno = errorno;
266	count++;
267	}
268
269	Safefree (req);
270	}
271
272	return count;
273	}
274		391
275	static void *	392	static void *
276	aio_proc (void *thr_arg)	393	aio_proc (void *thr_arg)
277	{	394	{
278	aio_req req;	395	aio_req req;
…		…
304		421
305	type = req->type;	422	type = req->type;
306		423
307	switch (type)	424	switch (type)
308	{	425	{
309	case REQ_READ: req->result = pread64 (req->fd, req->dataptr, req->length, req->offset); break;	426	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
310	case REQ_WRITE: req->result = pwrite64 (req->fd, req->dataptr, req->length, req->offset); break;	427	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
311	#if SYS_readahead	428
312	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	429	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
313	#else
314	case REQ_READAHEAD: req->result = -1; errno = ENOSYS; break;
315	#endif
316		430
317	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	431	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
318	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	432	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
319	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	433	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
320		434
321	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;	435	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
322	case REQ_CLOSE: req->result = close (req->fd); break;	436	case REQ_CLOSE: req->result = close (req->fd); break;
323	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	437	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
		438	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
		439	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
324		440
		441	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
325	case REQ_FSYNC: req->result = fsync (req->fd); break;	442	case REQ_FSYNC: req->result = fsync (req->fd); break;
326	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
327		443
328	case REQ_QUIT:	444	case REQ_QUIT:
329	break;	445	break;
330		446
331	default:	447	default:
…		…
357	while (type != REQ_QUIT);	473	while (type != REQ_QUIT);
358		474
359	return 0;	475	return 0;
360	}	476	}
361		477
		478	#define dREQ \
		479	aio_req req; \
		480	\
		481	if (SvOK (callback) && !SvROK (callback)) \
		482	croak ("clalback must be undef or of reference type"); \
		483	\
		484	Newz (0, req, 1, aio_cb); \
		485	if (!req) \
		486	croak ("out of memory during aio_req allocation"); \
		487	\
		488	req->callback = SvREFCNT_inc (callback);
		489
362	MODULE = IO::AIO PACKAGE = IO::AIO	490	MODULE = IO::AIO PACKAGE = IO::AIO
		491
		492	PROTOTYPES: ENABLE
363		493
364	BOOT:	494	BOOT:
365	{	495	{
366	if (pipe (respipe))	496	if (pipe (respipe))
367	croak ("unable to initialize result pipe");	497	croak ("unable to initialize result pipe");
…		…
369	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))	499	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
370	croak ("cannot set result pipe to nonblocking mode");	500	croak ("cannot set result pipe to nonblocking mode");
371		501
372	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))	502	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
373	croak ("cannot set result pipe to nonblocking mode");	503	croak ("cannot set result pipe to nonblocking mode");
		504
		505	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
374	}	506	}
375		507
376	void	508	void
377	min_parallel(nthreads)	509	min_parallel(nthreads)
378	int nthreads	510	int nthreads
379	PROTOTYPE: $	511	PROTOTYPE: $
380	CODE:
381	while (nthreads > started)
382	start_thread ();
383		512
384	void	513	void
385	max_parallel(nthreads)	514	max_parallel(nthreads)
386	int nthreads	515	int nthreads
387	PROTOTYPE: $	516	PROTOTYPE: $
		517
		518	int
		519	max_outstanding(nreqs)
		520	int nreqs
		521	PROTOTYPE: $
388	CODE:	522	CODE:
389	{	523	RETVAL = max_outstanding;
390	int cur = started;	524	max_outstanding = nreqs;
391	while (cur > nthreads)
392	{
393	end_thread ();
394	cur--;
395	}
396		525
397	while (started > nthreads)
398	{
399	poll_wait ();
400	poll_cb (aTHX);
401	}
402	}
403
404	void	526	void
405	aio_open(pathname,flags,mode,callback)	527	aio_open(pathname,flags,mode,callback=&PL_sv_undef)
406	SV * pathname	528	SV * pathname
407	int flags	529	int flags
408	int mode	530	int mode
409	SV * callback	531	SV * callback
410	PROTOTYPE: $$$$	532	PROTOTYPE: $$$;$
411	CODE:	533	CODE:
412	{	534	{
413	aio_req req;	535	dREQ;
414
415	Newz (0, req, 1, aio_cb);
416
417	if (!req)
418	croak ("out of memory during aio_req allocation");
419		536
420	req->type = REQ_OPEN;	537	req->type = REQ_OPEN;
421	req->data = newSVsv (pathname);	538	req->data = newSVsv (pathname);
422	req->dataptr = SvPV_nolen (req->data);	539	req->dataptr = SvPVbyte_nolen (req->data);
423	req->fd = flags;	540	req->fd = flags;
424	req->mode = mode;	541	req->mode = mode;
425	req->callback = SvREFCNT_inc (callback);
426		542
427	send_req (req);	543	send_req (req);
428	}	544	}
429		545
430	void	546	void
431	aio_close(fh,callback)	547	aio_close(fh,callback=&PL_sv_undef)
432	InputStream fh	548	SV * fh
433	SV * callback	549	SV * callback
434	PROTOTYPE: $$	550	PROTOTYPE: $;$
435	ALIAS:	551	ALIAS:
436	aio_close = REQ_CLOSE	552	aio_close = REQ_CLOSE
437	aio_fsync = REQ_FSYNC	553	aio_fsync = REQ_FSYNC
438	aio_fdatasync = REQ_FDATASYNC	554	aio_fdatasync = REQ_FDATASYNC
439	CODE:	555	CODE:
440	{	556	{
		557	dREQ;
		558
		559	req->type = ix;
		560	req->fh = newSVsv (fh);
		561	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
		562
		563	send_req (req);
		564	}
		565
		566	void
		567	aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
		568	SV * fh
		569	UV offset
		570	IV length
		571	SV * data
		572	IV dataoffset
		573	SV * callback
		574	ALIAS:
		575	aio_read = REQ_READ
		576	aio_write = REQ_WRITE
		577	PROTOTYPE: $$$$$;$
		578	CODE:
		579	{
441	aio_req req;	580	aio_req req;
		581	STRLEN svlen;
		582	char *svptr = SvPVbyte (data, svlen);
442		583
443	Newz (0, req, 1, aio_cb);	584	SvUPGRADE (data, SVt_PV);
		585	SvPOK_on (data);
444		586
445	if (!req)	587	if (dataoffset < 0)
446	croak ("out of memory during aio_req allocation");	588	dataoffset += svlen;
447		589
448	req->type = ix;	590	if (dataoffset < 0 \|\| dataoffset > svlen)
449	req->fd = PerlIO_fileno (fh);	591	croak ("data offset outside of string");
450	req->callback = SvREFCNT_inc (callback);
451		592
452	send_req (req);	593	if (ix == REQ_WRITE)
453	}	594	{
454		595	/* write: check length and adjust. */
455	void	596	if (length < 0 \|\| length + dataoffset > svlen)
456	aio_read(fh,offset,length,data,dataoffset,callback)	597	length = svlen - dataoffset;
457	InputStream fh	598	}
458	UV offset	599	else
459	IV length	600	{
460	SV * data	601	/* read: grow scalar as necessary */
461	IV dataoffset	602	svptr = SvGROW (data, length + dataoffset);
462	SV * callback	603	}
463	PROTOTYPE: $$$$$$
464	CODE:
465	read_write (aTHX_ 0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
466
467	void
468	aio_write(fh,offset,length,data,dataoffset,callback)
469	OutputStream fh
470	UV offset
471	IV length
472	SV * data
473	IV dataoffset
474	SV * callback
475	PROTOTYPE: $$$$$$
476	CODE:
477	read_write (aTHX_ 1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
478
479	void
480	aio_readahead(fh,offset,length,callback)
481	InputStream fh
482	UV offset
483	IV length
484	SV * callback
485	PROTOTYPE: $$$$
486	CODE:
487	{
488	aio_req req;
489		604
490	if (length < 0)	605	if (length < 0)
491	croak ("length must not be negative");	606	croak ("length must not be negative");
492		607
493	Newz (0, req, 1, aio_cb);	608	{
		609	dREQ;
494		610
495	if (!req)	611	req->type = ix;
496	croak ("out of memory during aio_req allocation");	612	req->fh = newSVsv (fh);
		613	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
		614	: IoOFP (sv_2io (fh)));
		615	req->offset = offset;
		616	req->length = length;
		617	req->data = SvREFCNT_inc (data);
		618	req->dataptr = (char *)svptr + dataoffset;
		619	req->callback = SvREFCNT_inc (callback);
		620
		621	send_req (req);
		622	}
		623	}
		624
		625	void
		626	aio_readahead(fh,offset,length,callback=&PL_sv_undef)
		627	SV * fh
		628	UV offset
		629	IV length
		630	SV * callback
		631	PROTOTYPE: $$$;$
		632	CODE:
		633	{
		634	dREQ;
497		635
498	req->type = REQ_READAHEAD;	636	req->type = REQ_READAHEAD;
		637	req->fh = newSVsv (fh);
499	req->fd = PerlIO_fileno (fh);	638	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
500	req->offset = offset;	639	req->offset = offset;
501	req->length = length;	640	req->length = length;
502	req->callback = SvREFCNT_inc (callback);
503		641
504	send_req (req);	642	send_req (req);
505	}	643	}
506		644
507	void	645	void
508	aio_stat(fh_or_path,callback)	646	aio_stat(fh_or_path,callback=&PL_sv_undef)
509	SV * fh_or_path	647	SV * fh_or_path
510	SV * callback	648	SV * callback
511	PROTOTYPE: $$
512	ALIAS:	649	ALIAS:
		650	aio_stat = REQ_STAT
513	aio_lstat = 1	651	aio_lstat = REQ_LSTAT
514	CODE:	652	CODE:
515	{	653	{
516	aio_req req;	654	dREQ;
517
518	Newz (0, req, 1, aio_cb);
519
520	if (!req)
521	croak ("out of memory during aio_req allocation");
522		655
523	New (0, req->statdata, 1, Stat_t);	656	New (0, req->statdata, 1, Stat_t);
524
525	if (!req->statdata)	657	if (!req->statdata)
526	croak ("out of memory during aio_req->statdata allocation");	658	croak ("out of memory during aio_req->statdata allocation (sorry, i just leaked memory, too)");
527		659
528	if (SvPOK (fh_or_path))	660	if (SvPOK (fh_or_path))
529	{	661	{
530	req->type = ix ? REQ_LSTAT : REQ_STAT;	662	req->type = ix;
531	req->data = newSVsv (fh_or_path);	663	req->data = newSVsv (fh_or_path);
532	req->dataptr = SvPV_nolen (req->data);	664	req->dataptr = SvPVbyte_nolen (req->data);
533	}	665	}
534	else	666	else
535	{	667	{
536	req->type = REQ_FSTAT;	668	req->type = REQ_FSTAT;
		669	req->fh = newSVsv (fh_or_path);
537	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	670	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
538	}	671	}
539		672
540	req->callback = SvREFCNT_inc (callback);
541
542	send_req (req);	673	send_req (req);
543	}	674	}
544		675
545	void	676	void
546	aio_unlink(pathname,callback)	677	aio_unlink(pathname,callback=&PL_sv_undef)
547	SV * pathname	678	SV * pathname
548	SV * callback	679	SV * callback
549	PROTOTYPE: $$	680	ALIAS:
		681	aio_unlink = REQ_UNLINK
		682	aio_rmdir = REQ_RMDIR
550	CODE:	683	CODE:
551	{	684	{
552	aio_req req;	685	dREQ;
553		686
554	Newz (0, req, 1, aio_cb);	687	req->type = ix;
555
556	if (!req)
557	croak ("out of memory during aio_req allocation");
558
559	req->type = REQ_UNLINK;
560	req->data = newSVsv (pathname);	688	req->data = newSVsv (pathname);
561	req->dataptr = SvPV_nolen (req->data);	689	req->dataptr = SvPVbyte_nolen (req->data);
562	req->callback = SvREFCNT_inc (callback);
563		690
564	send_req (req);	691	send_req (req);
565	}	692	}
		693
		694	void
		695	aio_symlink(oldpath,newpath,callback=&PL_sv_undef)
		696	SV * oldpath
		697	SV * newpath
		698	SV * callback
		699	CODE:
		700	{
		701	dREQ;
		702
		703	req->type = REQ_SYMLINK;
		704	req->fh = newSVsv (oldpath);
		705	req->data2ptr = SvPVbyte_nolen (req->fh);
		706	req->data = newSVsv (newpath);
		707	req->dataptr = SvPVbyte_nolen (req->data);
		708
		709	send_req (req);
		710	}
		711
		712	void
		713	flush()
		714	PROTOTYPE:
		715	CODE:
		716	while (nreqs)
		717	{
		718	poll_wait ();
		719	poll_cb ();
		720	}
		721
		722	void
		723	poll()
		724	PROTOTYPE:
		725	CODE:
		726	if (nreqs)
		727	{
		728	poll_wait ();
		729	poll_cb ();
		730	}
566		731
567	int	732	int
568	poll_fileno()	733	poll_fileno()
569	PROTOTYPE:	734	PROTOTYPE:
570	CODE:	735	CODE:
…		…
574		739
575	int	740	int
576	poll_cb(...)	741	poll_cb(...)
577	PROTOTYPE:	742	PROTOTYPE:
578	CODE:	743	CODE:
579	RETVAL = poll_cb (aTHX);	744	RETVAL = poll_cb ();
580	OUTPUT:	745	OUTPUT:
581	RETVAL	746	RETVAL
582		747
583	void	748	void
584	poll_wait()	749	poll_wait()

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Comparing IO-AIO/AIO.xs (file contents): Revision 1.3 by root, Sun Jul 10 20:07:11 2005 UTC vs. Revision 1.24 by root, Wed Aug 17 03:01:56 2005 UTC

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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.3 by root, Sun Jul 10 20:07:11 2005 UTC vs.
Revision 1.24 by root, Wed Aug 17 03:01:56 2005 UTC