[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 1.25 by root, Wed Aug 17 03:16:56 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	int nstarted;
		273
		274	for (;;) {
		275	while (nreqs)
		276	{
		277	poll_wait ();
		278	poll_cb ();
		279	}
		280
		281	nstarted = started;
		282	max_parallel (0);
		283
		284	pthread_mutex_lock (&reqlock);
		285
		286	if (!nreqs && !started)
		287	break;
		288
		289	pthread_mutex_unlock (&reqlock);
		290
		291	min_parallel (fork_started);
		292	}
		293
		294	pthread_mutex_lock (&frklock);
		295	fork_started = nstarted;
		296	pthread_mutex_lock (&reslock);
		297
		298	assert (!started);
		299	assert (!nreqs);
		300	assert (!reqs && !reqe);
		301	assert (!ress && !rese);
		302	}
		303
		304	static void atfork_parent (void)
		305	{
		306	pthread_mutex_unlock (&reslock);
		307	pthread_mutex_unlock (&frklock);
		308	pthread_mutex_unlock (&reqlock);
		309
		310	min_parallel (fork_started);
		311	}
		312
		313	#define atfork_child atfork_parent
		314
		315	/*****************************************************************************/
		316	/* work around various missing functions */
		317
		318	#if !HAVE_PREADWRITE
		319	# define pread aio_pread
		320	# define pwrite aio_pwrite
		321
		322	/*
		323	* make our pread/pwrite safe against themselves, but not against
		324	* normal read/write by using a mutex. slows down execution a lot,
		325	* but that's your problem, not mine.
		326	*/
		327	static pthread_mutex_t iolock = PTHREAD_MUTEX_INITIALIZER;
		328
		329	static ssize_t
		330	pread (int fd, void *buf, size_t count, off_t offset)
		331	{
		332	ssize_t res;
		333	off_t ooffset;
		334
		335	pthread_mutex_lock (&iolock);
		336	ooffset = lseek (fd, 0, SEEK_CUR);
		337	lseek (fd, offset, SEEK_SET);
		338	res = read (fd, buf, count);
		339	lseek (fd, ooffset, SEEK_SET);
		340	pthread_mutex_unlock (&iolock);
		341
		342	return res;
		343	}
		344
		345	static ssize_t
		346	pwrite (int fd, void *buf, size_t count, off_t offset)
		347	{
		348	ssize_t res;
		349	off_t ooffset;
		350
		351	pthread_mutex_lock (&iolock);
		352	ooffset = lseek (fd, 0, SEEK_CUR);
		353	lseek (fd, offset, SEEK_SET);
		354	res = write (fd, buf, count);
		355	lseek (fd, offset, SEEK_SET);
		356	pthread_mutex_unlock (&iolock);
		357
		358	return res;
		359	}
		360	#endif
		361
		362	#if !HAVE_FDATASYNC
		363	# define fdatasync fsync
		364	#endif
		365
		366	#if !HAVE_READAHEAD
		367	# define readahead aio_readahead
		368
		369	static char readahead_buf[4096];
		370
		371	static ssize_t
		372	readahead (int fd, off_t offset, size_t count)
		373	{
		374	while (count > 0)
147	{	375	{
148	/* read: grow scalar as necessary */	376	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
149	svptr = SvGROW (data, length + dataoffset);	377
		378	pread (fd, readahead_buf, len, offset);
		379	offset += len;
		380	count -= len;
150	}	381	}
151		382
152	if (length < 0)	383	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	}	384	}
		385	#endif
170		386
171	static void	387	/*****************************************************************************/
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		388
275	static void *	389	static void *
276	aio_proc (void *thr_arg)	390	aio_proc (void *thr_arg)
277	{	391	{
278	aio_req req;	392	aio_req req;
…		…
304		418
305	type = req->type;	419	type = req->type;
306		420
307	switch (type)	421	switch (type)
308	{	422	{
309	case REQ_READ: req->result = pread64 (req->fd, req->dataptr, req->length, req->offset); break;	423	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;	424	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
311	#if SYS_readahead	425
312	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	426	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		427
317	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	428	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
318	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	429	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
319	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	430	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
320		431
321	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;	432	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
322	case REQ_CLOSE: req->result = close (req->fd); break;	433	case REQ_CLOSE: req->result = close (req->fd); break;
323	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	434	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
		435	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
		436	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
324		437
		438	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
325	case REQ_FSYNC: req->result = fsync (req->fd); break;	439	case REQ_FSYNC: req->result = fsync (req->fd); break;
326	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
327		440
328	case REQ_QUIT:	441	case REQ_QUIT:
329	break;	442	break;
330		443
331	default:	444	default:
…		…
357	while (type != REQ_QUIT);	470	while (type != REQ_QUIT);
358		471
359	return 0;	472	return 0;
360	}	473	}
361		474
		475	#define dREQ \
		476	aio_req req; \
		477	\
		478	if (SvOK (callback) && !SvROK (callback)) \
		479	croak ("clalback must be undef or of reference type"); \
		480	\
		481	Newz (0, req, 1, aio_cb); \
		482	if (!req) \
		483	croak ("out of memory during aio_req allocation"); \
		484	\
		485	req->callback = SvREFCNT_inc (callback);
		486
362	MODULE = IO::AIO PACKAGE = IO::AIO	487	MODULE = IO::AIO PACKAGE = IO::AIO
		488
		489	PROTOTYPES: ENABLE
363		490
364	BOOT:	491	BOOT:
365	{	492	{
366	if (pipe (respipe))	493	if (pipe (respipe))
367	croak ("unable to initialize result pipe");	494	croak ("unable to initialize result pipe");
…		…
369	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))	496	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
370	croak ("cannot set result pipe to nonblocking mode");	497	croak ("cannot set result pipe to nonblocking mode");
371		498
372	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))	499	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
373	croak ("cannot set result pipe to nonblocking mode");	500	croak ("cannot set result pipe to nonblocking mode");
		501
		502	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
374	}	503	}
375		504
376	void	505	void
377	min_parallel(nthreads)	506	min_parallel(nthreads)
378	int nthreads	507	int nthreads
379	PROTOTYPE: $	508	PROTOTYPE: $
380	CODE:
381	while (nthreads > started)
382	start_thread ();
383		509
384	void	510	void
385	max_parallel(nthreads)	511	max_parallel(nthreads)
386	int nthreads	512	int nthreads
387	PROTOTYPE: $	513	PROTOTYPE: $
		514
		515	int
		516	max_outstanding(nreqs)
		517	int nreqs
		518	PROTOTYPE: $
388	CODE:	519	CODE:
389	{	520	RETVAL = max_outstanding;
390	int cur = started;	521	max_outstanding = nreqs;
391	while (cur > nthreads)
392	{
393	end_thread ();
394	cur--;
395	}
396		522
397	while (started > nthreads)
398	{
399	poll_wait ();
400	poll_cb (aTHX);
401	}
402	}
403
404	void	523	void
405	aio_open(pathname,flags,mode,callback)	524	aio_open(pathname,flags,mode,callback=&PL_sv_undef)
406	SV * pathname	525	SV * pathname
407	int flags	526	int flags
408	int mode	527	int mode
409	SV * callback	528	SV * callback
410	PROTOTYPE: $$$$	529	PROTOTYPE: $$$;$
411	CODE:	530	CODE:
412	{	531	{
413	aio_req req;	532	dREQ;
414
415	Newz (0, req, 1, aio_cb);
416
417	if (!req)
418	croak ("out of memory during aio_req allocation");
419		533
420	req->type = REQ_OPEN;	534	req->type = REQ_OPEN;
421	req->data = newSVsv (pathname);	535	req->data = newSVsv (pathname);
422	req->dataptr = SvPV_nolen (req->data);	536	req->dataptr = SvPVbyte_nolen (req->data);
423	req->fd = flags;	537	req->fd = flags;
424	req->mode = mode;	538	req->mode = mode;
425	req->callback = SvREFCNT_inc (callback);
426		539
427	send_req (req);	540	send_req (req);
428	}	541	}
429		542
430	void	543	void
431	aio_close(fh,callback)	544	aio_close(fh,callback=&PL_sv_undef)
432	InputStream fh	545	SV * fh
433	SV * callback	546	SV * callback
434	PROTOTYPE: $$	547	PROTOTYPE: $;$
435	ALIAS:	548	ALIAS:
436	aio_close = REQ_CLOSE	549	aio_close = REQ_CLOSE
437	aio_fsync = REQ_FSYNC	550	aio_fsync = REQ_FSYNC
438	aio_fdatasync = REQ_FDATASYNC	551	aio_fdatasync = REQ_FDATASYNC
439	CODE:	552	CODE:
440	{	553	{
		554	dREQ;
		555
		556	req->type = ix;
		557	req->fh = newSVsv (fh);
		558	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
		559
		560	send_req (req);
		561	}
		562
		563	void
		564	aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
		565	SV * fh
		566	UV offset
		567	IV length
		568	SV * data
		569	IV dataoffset
		570	SV * callback
		571	ALIAS:
		572	aio_read = REQ_READ
		573	aio_write = REQ_WRITE
		574	PROTOTYPE: $$$$$;$
		575	CODE:
		576	{
441	aio_req req;	577	aio_req req;
		578	STRLEN svlen;
		579	char *svptr = SvPVbyte (data, svlen);
442		580
443	Newz (0, req, 1, aio_cb);	581	SvUPGRADE (data, SVt_PV);
		582	SvPOK_on (data);
444		583
445	if (!req)	584	if (dataoffset < 0)
446	croak ("out of memory during aio_req allocation");	585	dataoffset += svlen;
447		586
448	req->type = ix;	587	if (dataoffset < 0 \|\| dataoffset > svlen)
449	req->fd = PerlIO_fileno (fh);	588	croak ("data offset outside of string");
450	req->callback = SvREFCNT_inc (callback);
451		589
452	send_req (req);	590	if (ix == REQ_WRITE)
453	}	591	{
454		592	/* write: check length and adjust. */
455	void	593	if (length < 0 \|\| length + dataoffset > svlen)
456	aio_read(fh,offset,length,data,dataoffset,callback)	594	length = svlen - dataoffset;
457	InputStream fh	595	}
458	UV offset	596	else
459	IV length	597	{
460	SV * data	598	/* read: grow scalar as necessary */
461	IV dataoffset	599	svptr = SvGROW (data, length + dataoffset);
462	SV * callback	600	}
463	PROTOTYPE: $$$$$$
464	CODE:
465	read_write (aTHX_ 0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
466
467	void
468	aio_write(fh,offset,length,data,dataoffset,callback)
469	OutputStream fh
470	UV offset
471	IV length
472	SV * data
473	IV dataoffset
474	SV * callback
475	PROTOTYPE: $$$$$$
476	CODE:
477	read_write (aTHX_ 1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
478
479	void
480	aio_readahead(fh,offset,length,callback)
481	InputStream fh
482	UV offset
483	IV length
484	SV * callback
485	PROTOTYPE: $$$$
486	CODE:
487	{
488	aio_req req;
489		601
490	if (length < 0)	602	if (length < 0)
491	croak ("length must not be negative");	603	croak ("length must not be negative");
492		604
493	Newz (0, req, 1, aio_cb);	605	{
		606	dREQ;
494		607
495	if (!req)	608	req->type = ix;
496	croak ("out of memory during aio_req allocation");	609	req->fh = newSVsv (fh);
		610	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
		611	: IoOFP (sv_2io (fh)));
		612	req->offset = offset;
		613	req->length = length;
		614	req->data = SvREFCNT_inc (data);
		615	req->dataptr = (char *)svptr + dataoffset;
		616	req->callback = SvREFCNT_inc (callback);
		617
		618	send_req (req);
		619	}
		620	}
		621
		622	void
		623	aio_readahead(fh,offset,length,callback=&PL_sv_undef)
		624	SV * fh
		625	UV offset
		626	IV length
		627	SV * callback
		628	PROTOTYPE: $$$;$
		629	CODE:
		630	{
		631	dREQ;
497		632
498	req->type = REQ_READAHEAD;	633	req->type = REQ_READAHEAD;
		634	req->fh = newSVsv (fh);
499	req->fd = PerlIO_fileno (fh);	635	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
500	req->offset = offset;	636	req->offset = offset;
501	req->length = length;	637	req->length = length;
502	req->callback = SvREFCNT_inc (callback);
503		638
504	send_req (req);	639	send_req (req);
505	}	640	}
506		641
507	void	642	void
508	aio_stat(fh_or_path,callback)	643	aio_stat(fh_or_path,callback=&PL_sv_undef)
509	SV * fh_or_path	644	SV * fh_or_path
510	SV * callback	645	SV * callback
511	PROTOTYPE: $$
512	ALIAS:	646	ALIAS:
		647	aio_stat = REQ_STAT
513	aio_lstat = 1	648	aio_lstat = REQ_LSTAT
514	CODE:	649	CODE:
515	{	650	{
516	aio_req req;	651	dREQ;
517
518	Newz (0, req, 1, aio_cb);
519
520	if (!req)
521	croak ("out of memory during aio_req allocation");
522		652
523	New (0, req->statdata, 1, Stat_t);	653	New (0, req->statdata, 1, Stat_t);
524
525	if (!req->statdata)	654	if (!req->statdata)
526	croak ("out of memory during aio_req->statdata allocation");	655	croak ("out of memory during aio_req->statdata allocation (sorry, i just leaked memory, too)");
527		656
528	if (SvPOK (fh_or_path))	657	if (SvPOK (fh_or_path))
529	{	658	{
530	req->type = ix ? REQ_LSTAT : REQ_STAT;	659	req->type = ix;
531	req->data = newSVsv (fh_or_path);	660	req->data = newSVsv (fh_or_path);
532	req->dataptr = SvPV_nolen (req->data);	661	req->dataptr = SvPVbyte_nolen (req->data);
533	}	662	}
534	else	663	else
535	{	664	{
536	req->type = REQ_FSTAT;	665	req->type = REQ_FSTAT;
		666	req->fh = newSVsv (fh_or_path);
537	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	667	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
538	}	668	}
539		669
540	req->callback = SvREFCNT_inc (callback);
541
542	send_req (req);	670	send_req (req);
543	}	671	}
544		672
545	void	673	void
546	aio_unlink(pathname,callback)	674	aio_unlink(pathname,callback=&PL_sv_undef)
547	SV * pathname	675	SV * pathname
548	SV * callback	676	SV * callback
549	PROTOTYPE: $$	677	ALIAS:
		678	aio_unlink = REQ_UNLINK
		679	aio_rmdir = REQ_RMDIR
550	CODE:	680	CODE:
551	{	681	{
552	aio_req req;	682	dREQ;
553		683
554	Newz (0, req, 1, aio_cb);	684	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);	685	req->data = newSVsv (pathname);
561	req->dataptr = SvPV_nolen (req->data);	686	req->dataptr = SvPVbyte_nolen (req->data);
562	req->callback = SvREFCNT_inc (callback);
563		687
564	send_req (req);	688	send_req (req);
565	}	689	}
		690
		691	void
		692	aio_symlink(oldpath,newpath,callback=&PL_sv_undef)
		693	SV * oldpath
		694	SV * newpath
		695	SV * callback
		696	CODE:
		697	{
		698	dREQ;
		699
		700	req->type = REQ_SYMLINK;
		701	req->fh = newSVsv (oldpath);
		702	req->data2ptr = SvPVbyte_nolen (req->fh);
		703	req->data = newSVsv (newpath);
		704	req->dataptr = SvPVbyte_nolen (req->data);
		705
		706	send_req (req);
		707	}
		708
		709	void
		710	flush()
		711	PROTOTYPE:
		712	CODE:
		713	while (nreqs)
		714	{
		715	poll_wait ();
		716	poll_cb ();
		717	}
		718
		719	void
		720	poll()
		721	PROTOTYPE:
		722	CODE:
		723	if (nreqs)
		724	{
		725	poll_wait ();
		726	poll_cb ();
		727	}
566		728
567	int	729	int
568	poll_fileno()	730	poll_fileno()
569	PROTOTYPE:	731	PROTOTYPE:
570	CODE:	732	CODE:
…		…
574		736
575	int	737	int
576	poll_cb(...)	738	poll_cb(...)
577	PROTOTYPE:	739	PROTOTYPE:
578	CODE:	740	CODE:
579	RETVAL = poll_cb (aTHX);	741	RETVAL = poll_cb ();
580	OUTPUT:	742	OUTPUT:
581	RETVAL	743	RETVAL
582		744
583	void	745	void
584	poll_wait()	746	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 1.25 by root, Wed Aug 17 03:16:56 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 1.25 by root, Wed Aug 17 03:16:56 2005 UTC