[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 1.34 by root, Tue Aug 23 00:03:14 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
		10	#include <pthread.h>
		11
7	#include <sys/types.h>	12	#include <sys/types.h>
8	#include <sys/stat.h>	13	#include <sys/stat.h>
		14
9	#include <unistd.h>	15	#include <unistd.h>
10	#include <fcntl.h>	16	#include <fcntl.h>
11	#include <signal.h>	17	#include <signal.h>
12	#include <sched.h>	18	#include <sched.h>
13	#include <endian.h>
14		19
15	#include <pthread.h>	20	#if HAVE_SENDFILE
		21	# if __linux
		22	# include <sys/sendfile.h>
		23	# elif __freebsd
16	#include <sys/syscall.h>	24	# include <sys/socket.h>
		25	# include <sys/uio.h>
		26	# elif __hpux
		27	# include <sys/socket.h>
		28	# else
		29	# error sendfile support requested but not available
		30	# endif
		31	#endif
17		32
18	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 ;) */
20	typedef void InOutStream; / hack, but 5.6.1 is simply toooo old ;) */
21
22	#if __i386 \|\| __amd64
23	# define STACKSIZE ( 256 * sizeof (long))
24	#elif __ia64	33	#if __ia64
25	# define STACKSIZE (8192 * sizeof (long))	34	# define STACKSIZE 65536
26	#else	35	#else
27	# define STACKSIZE ( 512 * sizeof (long))	36	# define STACKSIZE 4096
28	#endif	37	#endif
29		38
30	enum {	39	enum {
31	REQ_QUIT,	40	REQ_QUIT,
32	REQ_OPEN, REQ_CLOSE,	41	REQ_OPEN, REQ_CLOSE,
33	REQ_READ, REQ_WRITE, REQ_READAHEAD,	42	REQ_READ, REQ_WRITE, REQ_READAHEAD,
		43	REQ_SENDFILE,
34	REQ_STAT, REQ_LSTAT, REQ_FSTAT, REQ_UNLINK,	44	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
35	REQ_FSYNC, REQ_FDATASYNC,	45	REQ_FSYNC, REQ_FDATASYNC,
		46	REQ_UNLINK, REQ_RMDIR,
		47	REQ_SYMLINK,
36	};	48	};
37		49
38	typedef struct aio_cb {	50	typedef struct aio_cb {
39	struct aio_cb *volatile next;	51	struct aio_cb *volatile next;
40		52
41	int type;	53	int type;
42		54
43	int fd;	55	int fd, fd2;
44	off_t offset;	56	off_t offset;
45	size_t length;	57	size_t length;
46	ssize_t result;	58	ssize_t result;
47	mode_t mode; /* open */	59	mode_t mode; /* open */
48	int errorno;	60	int errorno;
49	SV data, callback;	61	SV data, callback;
50	void *dataptr;	62	SV fh, fh2;
		63	void dataptr, data2ptr;
51	STRLEN dataoffset;	64	STRLEN dataoffset;
52		65
53	Stat_t *statdata;	66	Stat_t *statdata;
54	} aio_cb;	67	} aio_cb;
55		68
56	typedef aio_cb *aio_req;	69	typedef aio_cb *aio_req;
57		70
58	static int started;	71	static int started, wanted;
59	static int nreqs;	72	static volatile int nreqs;
		73	static int max_outstanding = 1<<30;
60	static int respipe [2];	74	static int respipe [2];
61		75
62	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	76	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;
63	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;	77	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
64	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	78	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
65		79
66	static volatile aio_req reqs, reqe; /* queue start, queue end */	80	static volatile aio_req reqs, reqe; /* queue start, queue end */
67	static volatile aio_req ress, rese; /* queue start, queue end */	81	static volatile aio_req ress, rese; /* queue start, queue end */
68		82
		83	static void free_req (aio_req req)
		84	{
		85	if (req->data)
		86	SvREFCNT_dec (req->data);
		87
		88	if (req->fh)
		89	SvREFCNT_dec (req->fh);
		90
		91	if (req->fh2)
		92	SvREFCNT_dec (req->fh2);
		93
		94	if (req->statdata)
		95	Safefree (req->statdata);
		96
		97	if (req->callback)
		98	SvREFCNT_dec (req->callback);
		99
		100	Safefree (req);
		101	}
		102
		103	static void
		104	poll_wait ()
		105	{
		106	if (nreqs && !ress)
		107	{
		108	fd_set rfd;
		109	FD_ZERO(&rfd);
		110	FD_SET(respipe [0], &rfd);
		111
		112	select (respipe [0] + 1, &rfd, 0, 0, 0);
		113	}
		114	}
		115
		116	static int
		117	poll_cb ()
		118	{
		119	dSP;
		120	int count = 0;
		121	int do_croak = 0;
		122	aio_req req;
		123
		124	for (;;)
		125	{
		126	pthread_mutex_lock (&reslock);
		127	req = ress;
		128
		129	if (req)
		130	{
		131	ress = req->next;
		132
		133	if (!ress)
		134	{
		135	/* read any signals sent by the worker threads */
		136	char buf [32];
		137	while (read (respipe [0], buf, 32) == 32)
		138	;
		139
		140	rese = 0;
		141	}
		142	}
		143
		144	pthread_mutex_unlock (&reslock);
		145
		146	if (!req)
		147	break;
		148
		149	nreqs--;
		150
		151	if (req->type == REQ_QUIT)
		152	started--;
		153	else
		154	{
		155	int errorno = errno;
		156	errno = req->errorno;
		157
		158	if (req->type == REQ_READ)
		159	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
		160
		161	if (req->data2ptr && (req->type == REQ_READ \|\| req->type == REQ_WRITE))
		162	SvREADONLY_off (req->data);
		163
		164	if (req->statdata)
		165	{
		166	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
		167	PL_laststatval = req->result;
		168	PL_statcache = *(req->statdata);
		169	}
		170
		171	ENTER;
		172	PUSHMARK (SP);
		173	XPUSHs (sv_2mortal (newSViv (req->result)));
		174
		175	if (req->type == REQ_OPEN)
		176	{
		177	/* convert fd to fh */
		178	SV *fh;
		179
		180	PUTBACK;
		181	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);
		182	SPAGAIN;
		183
		184	fh = SvREFCNT_inc (POPs);
		185
		186	PUSHMARK (SP);
		187	XPUSHs (sv_2mortal (fh));
		188	}
		189
		190	if (SvOK (req->callback))
		191	{
		192	PUTBACK;
		193	call_sv (req->callback, G_VOID \| G_EVAL);
		194	SPAGAIN;
		195
		196	if (SvTRUE (ERRSV))
		197	{
		198	free_req (req);
		199	croak (0);
		200	}
		201	}
		202
		203	LEAVE;
		204
		205	errno = errorno;
		206	count++;
		207	}
		208
		209	free_req (req);
		210	}
		211
		212	return count;
		213	}
		214
69	static void aio_proc(void arg);	215	static void aio_proc(void arg);
70		216
71	static void	217	static void
72	start_thread (void)	218	start_thread (void)
73	{	219	{
89	}	235	}
90		236
91	static void	237	static void
92	send_req (aio_req req)	238	send_req (aio_req req)
93	{	239	{
		240	while (started < wanted && nreqs >= started)
		241	start_thread ();
		242
94	nreqs++;	243	nreqs++;
95		244
96	pthread_mutex_lock (&reqlock);	245	pthread_mutex_lock (&reqlock);
97		246
98	req->next = 0;	247	req->next = 0;
…		…
105	else	254	else
106	reqe = reqs = req;	255	reqe = reqs = req;
107		256
108	pthread_cond_signal (&reqwait);	257	pthread_cond_signal (&reqwait);
109	pthread_mutex_unlock (&reqlock);	258	pthread_mutex_unlock (&reqlock);
		259
		260	if (nreqs > max_outstanding)
		261	for (;;)
		262	{
		263	poll_cb ();
		264
		265	if (nreqs <= max_outstanding)
		266	break;
		267
		268	poll_wait ();
		269	}
110	}	270	}
111		271
112	static void	272	static void
113	end_thread (void)	273	end_thread (void)
114	{	274	{
115	aio_req req;	275	aio_req req;
116	New (0, req, 1, aio_cb);	276	Newz (0, req, 1, aio_cb);
117	req->type = REQ_QUIT;	277	req->type = REQ_QUIT;
118		278
119	send_req (req);	279	send_req (req);
120	}	280	}
121		281
122	static void	282	static void min_parallel (int nthreads)
123	read_write (pTHX_
124	int dowrite, int fd, off_t offset, size_t length,
125	SV data, STRLEN dataoffset, SV callback)
126	{	283	{
127	aio_req req;	284	if (wanted < nthreads)
128	STRLEN svlen;	285	wanted = nthreads;
129	char *svptr = SvPV (data, svlen);	286	}
130		287
131	SvUPGRADE (data, SVt_PV);	288	static void max_parallel (int nthreads)
132	SvPOK_on (data);	289	{
		290	int cur = started;
133		291
134	if (dataoffset < 0)	292	if (wanted > nthreads)
135	dataoffset += svlen;	293	wanted = nthreads;
136		294
137	if (dataoffset < 0 \|\| dataoffset > svlen)	295	while (cur > wanted)
138	croak ("data offset outside of string");
139
140	if (dowrite)
141	{	296	{
142	/* write: check length and adjust. */	297	end_thread ();
143	if (length < 0 \|\| length + dataoffset > svlen)	298	cur--;
144	length = svlen - dataoffset;
145	}	299	}
146	else	300
		301	while (started > wanted)
147	{	302	{
148	/* read: grow scalar as necessary */	303	poll_wait ();
149	svptr = SvGROW (data, length + dataoffset);	304	poll_cb ();
150	}	305	}
151
152	if (length < 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	}	306	}
170		307
171	static void	308	static void create_pipe ()
172	poll_wait ()
173	{	309	{
174	if (!nreqs)	310	if (pipe (respipe))
175	return;	311	croak ("unable to initialize result pipe");
176		312
177	fd_set rfd;	313	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
178	FD_ZERO(&rfd);	314	croak ("cannot set result pipe to nonblocking mode");
179	FD_SET(respipe [0], &rfd);
180		315
181	select (respipe [0] + 1, &rfd, 0, 0, 0);	316	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
		317	croak ("cannot set result pipe to nonblocking mode");
182	}	318	}
183		319
184	static int	320	static void atfork_prepare (void)
185	poll_cb (pTHX)
186	{	321	{
187	dSP;	322	pthread_mutex_lock (&reqlock);
188	int count = 0;	323	pthread_mutex_lock (&reslock);
		324	}
		325
		326	static void atfork_parent (void)
		327	{
		328	pthread_mutex_unlock (&reslock);
		329	pthread_mutex_unlock (&reqlock);
		330	}
		331
		332	static void atfork_child (void)
		333	{
189	aio_req req;	334	aio_req prv;
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		335
198	for (;;)	336	started = 0;
		337
		338	while (reqs)
199	{	339	{
200	pthread_mutex_lock (&reslock);	340	prv = reqs;
201
202	req = ress;
203
204	if (ress)
205	{
206	ress = ress->next;	341	reqs = prv->next;
207	if (!ress) rese = 0;	342	free_req (prv);
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	}	343	}
271		344
272	return count;	345	reqs = reqe = 0;
		346
		347	while (ress)
		348	{
		349	prv = ress;
		350	ress = prv->next;
		351	free_req (prv);
		352	}
		353
		354	ress = rese = 0;
		355
		356	close (respipe [0]);
		357	close (respipe [1]);
		358	create_pipe ();
		359
		360	atfork_parent ();
273	}	361	}
		362
		363	/*****************************************************************************/
		364	/* work around various missing functions */
		365
		366	#if !HAVE_PREADWRITE
		367	# define pread aio_pread
		368	# define pwrite aio_pwrite
		369
		370	/*
		371	* make our pread/pwrite safe against themselves, but not against
		372	* normal read/write by using a mutex. slows down execution a lot,
		373	* but that's your problem, not mine.
		374	*/
		375	static pthread_mutex_t iolock = PTHREAD_MUTEX_INITIALIZER;
		376
		377	static ssize_t
		378	pread (int fd, void *buf, size_t count, off_t offset)
		379	{
		380	ssize_t res;
		381	off_t ooffset;
		382
		383	pthread_mutex_lock (&iolock);
		384	ooffset = lseek (fd, 0, SEEK_CUR);
		385	lseek (fd, offset, SEEK_SET);
		386	res = read (fd, buf, count);
		387	lseek (fd, ooffset, SEEK_SET);
		388	pthread_mutex_unlock (&iolock);
		389
		390	return res;
		391	}
		392
		393	static ssize_t
		394	pwrite (int fd, void *buf, size_t count, off_t offset)
		395	{
		396	ssize_t res;
		397	off_t ooffset;
		398
		399	pthread_mutex_lock (&iolock);
		400	ooffset = lseek (fd, 0, SEEK_CUR);
		401	lseek (fd, offset, SEEK_SET);
		402	res = write (fd, buf, count);
		403	lseek (fd, offset, SEEK_SET);
		404	pthread_mutex_unlock (&iolock);
		405
		406	return res;
		407	}
		408	#endif
		409
		410	#if !HAVE_FDATASYNC
		411	# define fdatasync fsync
		412	#endif
		413
		414	#if !HAVE_READAHEAD
		415	# define readahead aio_readahead
		416
		417	static char readahead_buf[4096];
		418
		419	static ssize_t
		420	readahead (int fd, off_t offset, size_t count)
		421	{
		422	while (count > 0)
		423	{
		424	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
		425
		426	pread (fd, readahead_buf, len, offset);
		427	offset += len;
		428	count -= len;
		429	}
		430
		431	errno = 0;
		432	}
		433	#endif
		434
		435	/* sendfile always needs emulation */
		436	static ssize_t
		437	sendfile_ (int ofd, int ifd, off_t offset, size_t count)
		438	{
		439	ssize_t res;
		440
		441	if (!count)
		442	return 0;
		443
		444	#if __linux
		445	res = sendfile (ofd, ifd, &offset, count);
		446
		447	#elif __freebsd
		448	/*
		449	* Of course, the freebsd sendfile is a dire hack with no thoughts
		450	* wasted on making it similar to other i/o functions.
		451	*/
		452	{
		453	off_t sbytes;
		454	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
		455
		456	if (!res && errno == EAGAIN)
		457	/* maybe on others, too, as usual, the manpage leaves you guessing */
		458	res = sbytes;
		459	}
		460
		461	#elif __hpux
		462	res = sendfile (ofd, ifd, offset, count, 0, 0);
		463
		464	#else
		465	res = -1;
		466	errno = ENOSYS;
		467	#endif
		468
		469	if (res < 0 && (errno == ENOSYS \|\| errno == EINVAL \|\| errno == ENOTSOCK))
		470	{
		471	/* emulate sendfile. this is a major pain in the ass */
		472	char *buf = malloc (4096);
		473	res = 0;
		474
		475	for (;;)
		476	{
		477	ssize_t cnt;
		478
		479	cnt = pread (ifd, buf, 4096, offset);
		480
		481	if (cnt <= 0)
		482	{
		483	if (cnt && !res) res = -1;
		484	break;
		485	}
		486
		487	cnt = write (ofd, buf, cnt);
		488
		489	if (cnt <= 0)
		490	{
		491	if (cnt && !res) res = -1;
		492	break;
		493	}
		494
		495	offset += cnt;
		496	res += cnt;
		497	}
		498
		499	{
		500	int errorno = errno;
		501	free (buf);
		502	errno = errorno;
		503	}
		504	}
		505
		506	return res;
		507	}
		508
		509	/*****************************************************************************/
274		510
275	static void *	511	static void *
276	aio_proc (void *thr_arg)	512	aio_proc (void *thr_arg)
277	{	513	{
278	aio_req req;	514	aio_req req;
…		…
304		540
305	type = req->type;	541	type = req->type;
306		542
307	switch (type)	543	switch (type)
308	{	544	{
309	case REQ_READ: req->result = pread64 (req->fd, req->dataptr, req->length, req->offset); break;	545	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;	546	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
311	#if SYS_readahead	547
312	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	548	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
313	#else	549	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
314	case REQ_READAHEAD: req->result = -1; errno = ENOSYS; break;
315	#endif
316		550
317	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	551	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
318	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	552	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
319	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	553	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
320		554
321	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;	555	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
322	case REQ_CLOSE: req->result = close (req->fd); break;	556	case REQ_CLOSE: req->result = close (req->fd); break;
323	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	557	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
		558	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
		559	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
324		560
		561	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
325	case REQ_FSYNC: req->result = fsync (req->fd); break;	562	case REQ_FSYNC: req->result = fsync (req->fd); break;
326	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
327		563
328	case REQ_QUIT:	564	case REQ_QUIT:
329	break;	565	break;
330		566
331	default:	567	default:
…		…
357	while (type != REQ_QUIT);	593	while (type != REQ_QUIT);
358		594
359	return 0;	595	return 0;
360	}	596	}
361		597
		598	#define dREQ \
		599	aio_req req; \
		600	\
		601	if (SvOK (callback) && !SvROK (callback)) \
		602	croak ("clalback must be undef or of reference type"); \
		603	\
		604	Newz (0, req, 1, aio_cb); \
		605	if (!req) \
		606	croak ("out of memory during aio_req allocation"); \
		607	\
		608	req->callback = newSVsv (callback);
		609
362	MODULE = IO::AIO PACKAGE = IO::AIO	610	MODULE = IO::AIO PACKAGE = IO::AIO
363		611
		612	PROTOTYPES: ENABLE
		613
364	BOOT:	614	BOOT:
365	{	615	{
366	if (pipe (respipe))	616	create_pipe ();
367	croak ("unable to initialize result pipe");	617	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
368
369	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
370	croak ("cannot set result pipe to nonblocking mode");
371
372	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
373	croak ("cannot set result pipe to nonblocking mode");
374	}	618	}
375		619
376	void	620	void
377	min_parallel(nthreads)	621	min_parallel(nthreads)
378	int nthreads	622	int nthreads
379	PROTOTYPE: $	623	PROTOTYPE: $
380	CODE:
381	while (nthreads > started)
382	start_thread ();
383		624
384	void	625	void
385	max_parallel(nthreads)	626	max_parallel(nthreads)
386	int nthreads	627	int nthreads
387	PROTOTYPE: $	628	PROTOTYPE: $
		629
		630	int
		631	max_outstanding(nreqs)
		632	int nreqs
		633	PROTOTYPE: $
388	CODE:	634	CODE:
389	{	635	RETVAL = max_outstanding;
390	int cur = started;	636	max_outstanding = nreqs;
391	while (cur > nthreads)
392	{
393	end_thread ();
394	cur--;
395	}
396		637
397	while (started > nthreads)
398	{
399	poll_wait ();
400	poll_cb (aTHX);
401	}
402	}
403
404	void	638	void
405	aio_open(pathname,flags,mode,callback)	639	aio_open(pathname,flags,mode,callback=&PL_sv_undef)
406	SV * pathname	640	SV * pathname
407	int flags	641	int flags
408	int mode	642	int mode
409	SV * callback	643	SV * callback
410	PROTOTYPE: $$$$	644	PROTOTYPE: $$$;$
411	CODE:	645	CODE:
412	{	646	{
413	aio_req req;	647	dREQ;
414
415	Newz (0, req, 1, aio_cb);
416
417	if (!req)
418	croak ("out of memory during aio_req allocation");
419		648
420	req->type = REQ_OPEN;	649	req->type = REQ_OPEN;
421	req->data = newSVsv (pathname);	650	req->data = newSVsv (pathname);
422	req->dataptr = SvPV_nolen (req->data);	651	req->dataptr = SvPVbyte_nolen (req->data);
423	req->fd = flags;	652	req->fd = flags;
424	req->mode = mode;	653	req->mode = mode;
425	req->callback = SvREFCNT_inc (callback);
426		654
427	send_req (req);	655	send_req (req);
428	}	656	}
429		657
430	void	658	void
431	aio_close(fh,callback)	659	aio_close(fh,callback=&PL_sv_undef)
432	InputStream fh	660	SV * fh
433	SV * callback	661	SV * callback
434	PROTOTYPE: $$	662	PROTOTYPE: $;$
435	ALIAS:	663	ALIAS:
436	aio_close = REQ_CLOSE	664	aio_close = REQ_CLOSE
437	aio_fsync = REQ_FSYNC	665	aio_fsync = REQ_FSYNC
438	aio_fdatasync = REQ_FDATASYNC	666	aio_fdatasync = REQ_FDATASYNC
439	CODE:	667	CODE:
440	{	668	{
		669	dREQ;
		670
		671	req->type = ix;
		672	req->fh = newSVsv (fh);
		673	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
		674
		675	send_req (req);
		676	}
		677
		678	void
		679	aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
		680	SV * fh
		681	UV offset
		682	UV length
		683	SV * data
		684	UV dataoffset
		685	SV * callback
		686	ALIAS:
		687	aio_read = REQ_READ
		688	aio_write = REQ_WRITE
		689	PROTOTYPE: $$$$$;$
		690	CODE:
		691	{
441	aio_req req;	692	aio_req req;
		693	STRLEN svlen;
		694	char *svptr = SvPVbyte (data, svlen);
442		695
443	Newz (0, req, 1, aio_cb);	696	SvUPGRADE (data, SVt_PV);
		697	SvPOK_on (data);
444		698
445	if (!req)	699	if (dataoffset < 0)
446	croak ("out of memory during aio_req allocation");	700	dataoffset += svlen;
447		701
448	req->type = ix;	702	if (dataoffset < 0 \|\| dataoffset > svlen)
449	req->fd = PerlIO_fileno (fh);	703	croak ("data offset outside of string");
450	req->callback = SvREFCNT_inc (callback);
451		704
452	send_req (req);	705	if (ix == REQ_WRITE)
453	}	706	{
454		707	/* write: check length and adjust. */
455	void	708	if (length < 0 \|\| length + dataoffset > svlen)
456	aio_read(fh,offset,length,data,dataoffset,callback)	709	length = svlen - dataoffset;
457	InputStream fh	710	}
458	UV offset	711	else
459	IV length	712	{
460	SV * data	713	/* read: grow scalar as necessary */
461	IV dataoffset	714	svptr = SvGROW (data, length + dataoffset);
462	SV * callback	715	}
463	PROTOTYPE: $$$$$$
464	CODE:
465	read_write (aTHX_ 0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
466
467	void
468	aio_write(fh,offset,length,data,dataoffset,callback)
469	OutputStream fh
470	UV offset
471	IV length
472	SV * data
473	IV dataoffset
474	SV * callback
475	PROTOTYPE: $$$$$$
476	CODE:
477	read_write (aTHX_ 1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
478
479	void
480	aio_readahead(fh,offset,length,callback)
481	InputStream fh
482	UV offset
483	IV length
484	SV * callback
485	PROTOTYPE: $$$$
486	CODE:
487	{
488	aio_req req;
489		716
490	if (length < 0)	717	if (length < 0)
491	croak ("length must not be negative");	718	croak ("length must not be negative");
492		719
493	Newz (0, req, 1, aio_cb);	720	{
		721	dREQ;
494		722
495	if (!req)	723	req->type = ix;
496	croak ("out of memory during aio_req allocation");	724	req->fh = newSVsv (fh);
		725	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
		726	: IoOFP (sv_2io (fh)));
		727	req->offset = offset;
		728	req->length = length;
		729	req->data = SvREFCNT_inc (data);
		730	req->dataptr = (char *)svptr + dataoffset;
		731
		732	if (!SvREADONLY (data))
		733	{
		734	SvREADONLY_on (data);
		735	req->data2ptr = (void *)data;
		736	}
		737
		738	send_req (req);
		739	}
		740	}
		741
		742	void
		743	aio_sendfile(out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)
		744	SV * out_fh
		745	SV * in_fh
		746	UV in_offset
		747	UV length
		748	SV * callback
		749	PROTOTYPE: $$$$;$
		750	CODE:
		751	{
		752	dREQ;
		753
		754	req->type = REQ_SENDFILE;
		755	req->fh = newSVsv (out_fh);
		756	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
		757	req->fh2 = newSVsv (in_fh);
		758	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
		759	req->offset = in_offset;
		760	req->length = length;
		761
		762	send_req (req);
		763	}
		764
		765	void
		766	aio_readahead(fh,offset,length,callback=&PL_sv_undef)
		767	SV * fh
		768	UV offset
		769	IV length
		770	SV * callback
		771	PROTOTYPE: $$$;$
		772	CODE:
		773	{
		774	dREQ;
497		775
498	req->type = REQ_READAHEAD;	776	req->type = REQ_READAHEAD;
		777	req->fh = newSVsv (fh);
499	req->fd = PerlIO_fileno (fh);	778	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
500	req->offset = offset;	779	req->offset = offset;
501	req->length = length;	780	req->length = length;
502	req->callback = SvREFCNT_inc (callback);
503		781
504	send_req (req);	782	send_req (req);
505	}	783	}
506		784
507	void	785	void
508	aio_stat(fh_or_path,callback)	786	aio_stat(fh_or_path,callback=&PL_sv_undef)
509	SV * fh_or_path	787	SV * fh_or_path
510	SV * callback	788	SV * callback
511	PROTOTYPE: $$
512	ALIAS:	789	ALIAS:
		790	aio_stat = REQ_STAT
513	aio_lstat = 1	791	aio_lstat = REQ_LSTAT
514	CODE:	792	CODE:
515	{	793	{
516	aio_req req;	794	dREQ;
517
518	Newz (0, req, 1, aio_cb);
519
520	if (!req)
521	croak ("out of memory during aio_req allocation");
522		795
523	New (0, req->statdata, 1, Stat_t);	796	New (0, req->statdata, 1, Stat_t);
524
525	if (!req->statdata)	797	if (!req->statdata)
		798	{
		799	free_req (req);
526	croak ("out of memory during aio_req->statdata allocation");	800	croak ("out of memory during aio_req->statdata allocation");
		801	}
527		802
528	if (SvPOK (fh_or_path))	803	if (SvPOK (fh_or_path))
529	{	804	{
530	req->type = ix ? REQ_LSTAT : REQ_STAT;	805	req->type = ix;
531	req->data = newSVsv (fh_or_path);	806	req->data = newSVsv (fh_or_path);
532	req->dataptr = SvPV_nolen (req->data);	807	req->dataptr = SvPVbyte_nolen (req->data);
533	}	808	}
534	else	809	else
535	{	810	{
536	req->type = REQ_FSTAT;	811	req->type = REQ_FSTAT;
		812	req->fh = newSVsv (fh_or_path);
537	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	813	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
538	}	814	}
539		815
540	req->callback = SvREFCNT_inc (callback);
541
542	send_req (req);	816	send_req (req);
543	}	817	}
544		818
545	void	819	void
546	aio_unlink(pathname,callback)	820	aio_unlink(pathname,callback=&PL_sv_undef)
547	SV * pathname	821	SV * pathname
548	SV * callback	822	SV * callback
549	PROTOTYPE: $$	823	ALIAS:
		824	aio_unlink = REQ_UNLINK
		825	aio_rmdir = REQ_RMDIR
550	CODE:	826	CODE:
551	{	827	{
552	aio_req req;	828	dREQ;
553		829
554	Newz (0, req, 1, aio_cb);	830	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);	831	req->data = newSVsv (pathname);
561	req->dataptr = SvPV_nolen (req->data);	832	req->dataptr = SvPVbyte_nolen (req->data);
562	req->callback = SvREFCNT_inc (callback);
563		833
564	send_req (req);	834	send_req (req);
565	}	835	}
		836
		837	void
		838	aio_symlink(oldpath,newpath,callback=&PL_sv_undef)
		839	SV * oldpath
		840	SV * newpath
		841	SV * callback
		842	CODE:
		843	{
		844	dREQ;
		845
		846	req->type = REQ_SYMLINK;
		847	req->fh = newSVsv (oldpath);
		848	req->data2ptr = SvPVbyte_nolen (req->fh);
		849	req->data = newSVsv (newpath);
		850	req->dataptr = SvPVbyte_nolen (req->data);
		851
		852	send_req (req);
		853	}
		854
		855	void
		856	flush()
		857	PROTOTYPE:
		858	CODE:
		859	while (nreqs)
		860	{
		861	poll_wait ();
		862	poll_cb ();
		863	}
		864
		865	void
		866	poll()
		867	PROTOTYPE:
		868	CODE:
		869	if (nreqs)
		870	{
		871	poll_wait ();
		872	poll_cb ();
		873	}
566		874
567	int	875	int
568	poll_fileno()	876	poll_fileno()
569	PROTOTYPE:	877	PROTOTYPE:
570	CODE:	878	CODE:
…		…
574		882
575	int	883	int
576	poll_cb(...)	884	poll_cb(...)
577	PROTOTYPE:	885	PROTOTYPE:
578	CODE:	886	CODE:
579	RETVAL = poll_cb (aTHX);	887	RETVAL = poll_cb ();
580	OUTPUT:	888	OUTPUT:
581	RETVAL	889	RETVAL
582		890
583	void	891	void
584	poll_wait()	892	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 1.34 by root, Tue Aug 23 00:03:14 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 1.34 by root, Tue Aug 23 00:03:14 2005 UTC