[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 1.33 by root, Mon Aug 22 23:21:57 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	# endif
		29	#endif
17		30
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	31	#if __ia64
25	# define STACKSIZE (8192 * sizeof (long))	32	# define STACKSIZE 65536
26	#else	33	#else
27	# define STACKSIZE ( 512 * sizeof (long))	34	# define STACKSIZE 4096
28	#endif	35	#endif
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 int nreqs;	70	static volatile int nreqs;
		71	static int max_outstanding = 1<<30;
60	static int respipe [2];	72	static int respipe [2];
61		73
62	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	74	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;
63	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;	75	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
64	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	76	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
65		77
66	static volatile aio_req reqs, reqe; /* queue start, queue end */	78	static volatile aio_req reqs, reqe; /* queue start, queue end */
67	static volatile aio_req ress, rese; /* queue start, queue end */	79	static volatile aio_req ress, rese; /* queue start, queue end */
68		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	}
		100
		101	static void
		102	poll_wait ()
		103	{
		104	if (nreqs && !ress)
		105	{
		106	fd_set rfd;
		107	FD_ZERO(&rfd);
		108	FD_SET(respipe [0], &rfd);
		109
		110	select (respipe [0] + 1, &rfd, 0, 0, 0);
		111	}
		112	}
		113
		114	static int
		115	poll_cb ()
		116	{
		117	dSP;
		118	int count = 0;
		119	int do_croak = 0;
		120	aio_req req;
		121
		122	for (;;)
		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
		147	nreqs--;
		148
		149	if (req->type == REQ_QUIT)
		150	started--;
		151	else
		152	{
		153	int errorno = errno;
		154	errno = req->errorno;
		155
		156	if (req->type == REQ_READ)
		157	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
		158
		159	if (req->data2ptr && (req->type == REQ_READ \|\| req->type == REQ_WRITE))
		160	SvREADONLY_off (req->data);
		161
		162	if (req->statdata)
		163	{
		164	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
		165	PL_laststatval = req->result;
		166	PL_statcache = *(req->statdata);
		167	}
		168
		169	ENTER;
		170	PUSHMARK (SP);
		171	XPUSHs (sv_2mortal (newSViv (req->result)));
		172
		173	if (req->type == REQ_OPEN)
		174	{
		175	/* convert fd to fh */
		176	SV *fh;
		177
		178	PUTBACK;
		179	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);
		180	SPAGAIN;
		181
		182	fh = SvREFCNT_inc (POPs);
		183
		184	PUSHMARK (SP);
		185	XPUSHs (sv_2mortal (fh));
		186	}
		187
		188	if (SvOK (req->callback))
		189	{
		190	PUTBACK;
		191	call_sv (req->callback, G_VOID \| G_EVAL);
		192	SPAGAIN;
		193
		194	if (SvTRUE (ERRSV))
		195	{
		196	free_req (req);
		197	croak (0);
		198	}
		199	}
		200
		201	LEAVE;
		202
		203	errno = errorno;
		204	count++;
		205	}
		206
		207	free_req (req);
		208	}
		209
		210	return count;
		211	}
		212
69	static void aio_proc(void arg);	213	static void aio_proc(void arg);
70		214
71	static void	215	static void
72	start_thread (void)	216	start_thread (void)
73	{	217	{
89	}	233	}
90		234
91	static void	235	static void
92	send_req (aio_req req)	236	send_req (aio_req req)
93	{	237	{
		238	while (started < wanted && nreqs >= started)
		239	start_thread ();
		240
94	nreqs++;	241	nreqs++;
95		242
96	pthread_mutex_lock (&reqlock);	243	pthread_mutex_lock (&reqlock);
97		244
98	req->next = 0;	245	req->next = 0;
…		…
105	else	252	else
106	reqe = reqs = req;	253	reqe = reqs = req;
107		254
108	pthread_cond_signal (&reqwait);	255	pthread_cond_signal (&reqwait);
109	pthread_mutex_unlock (&reqlock);	256	pthread_mutex_unlock (&reqlock);
		257
		258	if (nreqs > max_outstanding)
		259	for (;;)
		260	{
		261	poll_cb ();
		262
		263	if (nreqs <= max_outstanding)
		264	break;
		265
		266	poll_wait ();
		267	}
110	}	268	}
111		269
112	static void	270	static void
113	end_thread (void)	271	end_thread (void)
114	{	272	{
115	aio_req req;	273	aio_req req;
116	New (0, req, 1, aio_cb);	274	Newz (0, req, 1, aio_cb);
117	req->type = REQ_QUIT;	275	req->type = REQ_QUIT;
118		276
119	send_req (req);	277	send_req (req);
120	}	278	}
121		279
122	static void	280	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	{	281	{
127	aio_req req;	282	if (wanted < nthreads)
128	STRLEN svlen;	283	wanted = nthreads;
129	char *svptr = SvPV (data, svlen);	284	}
130		285
131	SvUPGRADE (data, SVt_PV);	286	static void max_parallel (int nthreads)
132	SvPOK_on (data);	287	{
		288	int cur = started;
133		289
134	if (dataoffset < 0)	290	if (wanted > nthreads)
135	dataoffset += svlen;	291	wanted = nthreads;
136		292
137	if (dataoffset < 0 \|\| dataoffset > svlen)	293	while (cur > wanted)
138	croak ("data offset outside of string");
139
140	if (dowrite)
141	{	294	{
142	/* write: check length and adjust. */	295	end_thread ();
143	if (length < 0 \|\| length + dataoffset > svlen)	296	cur--;
144	length = svlen - dataoffset;
145	}	297	}
146	else	298
		299	while (started > wanted)
147	{	300	{
148	/* read: grow scalar as necessary */	301	poll_wait ();
149	svptr = SvGROW (data, length + dataoffset);	302	poll_cb ();
150	}	303	}
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	}	304	}
170		305
171	static void	306	static void create_pipe ()
172	poll_wait ()
173	{	307	{
174	if (!nreqs)	308	if (pipe (respipe))
175	return;	309	croak ("unable to initialize result pipe");
176		310
177	fd_set rfd;	311	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
178	FD_ZERO(&rfd);	312	croak ("cannot set result pipe to nonblocking mode");
179	FD_SET(respipe [0], &rfd);
180		313
181	select (respipe [0] + 1, &rfd, 0, 0, 0);	314	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
		315	croak ("cannot set result pipe to nonblocking mode");
182	}	316	}
183		317
184	static int	318	static void atfork_prepare (void)
185	poll_cb (pTHX)
186	{	319	{
187	dSP;	320	pthread_mutex_lock (&reqlock);
188	int count = 0;	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	{
189	aio_req req;	332	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		333
198	for (;;)	334	started = 0;
		335
		336	while (reqs)
199	{	337	{
200	pthread_mutex_lock (&reslock);	338	prv = reqs;
201
202	req = ress;
203
204	if (ress)
205	{
206	ress = ress->next;	339	reqs = prv->next;
207	if (!ress) rese = 0;	340	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	}	341	}
271		342
272	return count;	343	reqs = reqe = 0;
		344
		345	while (ress)
		346	{
		347	prv = ress;
		348	ress = prv->next;
		349	free_req (prv);
		350	}
		351
		352	ress = rese = 0;
		353
		354	close (respipe [0]);
		355	close (respipe [1]);
		356	create_pipe ();
		357
		358	atfork_parent ();
273	}	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	/*****************************************************************************/
274		508
275	static void *	509	static void *
276	aio_proc (void *thr_arg)	510	aio_proc (void *thr_arg)
277	{	511	{
278	aio_req req;	512	aio_req req;
…		…
304		538
305	type = req->type;	539	type = req->type;
306		540
307	switch (type)	541	switch (type)
308	{	542	{
309	case REQ_READ: req->result = pread64 (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;
310	case REQ_WRITE: req->result = pwrite64 (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;
311	#if SYS_readahead	545
312	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;
313	#else	547	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		548
317	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	549	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
318	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	550	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
319	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	551	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
320		552
321	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;
322	case REQ_CLOSE: req->result = close (req->fd); break;	554	case REQ_CLOSE: req->result = close (req->fd); break;
323	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;
324		558
		559	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
325	case REQ_FSYNC: req->result = fsync (req->fd); break;	560	case REQ_FSYNC: req->result = fsync (req->fd); break;
326	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
327		561
328	case REQ_QUIT:	562	case REQ_QUIT:
329	break;	563	break;
330		564
331	default:	565	default:
…		…
357	while (type != REQ_QUIT);	591	while (type != REQ_QUIT);
358		592
359	return 0;	593	return 0;
360	}	594	}
361		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
362	MODULE = IO::AIO PACKAGE = IO::AIO	608	MODULE = IO::AIO PACKAGE = IO::AIO
363		609
		610	PROTOTYPES: ENABLE
		611
364	BOOT:	612	BOOT:
365	{	613	{
366	if (pipe (respipe))	614	create_pipe ();
367	croak ("unable to initialize result pipe");	615	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	}	616	}
375		617
376	void	618	void
377	min_parallel(nthreads)	619	min_parallel(nthreads)
378	int nthreads	620	int nthreads
379	PROTOTYPE: $	621	PROTOTYPE: $
380	CODE:
381	while (nthreads > started)
382	start_thread ();
383		622
384	void	623	void
385	max_parallel(nthreads)	624	max_parallel(nthreads)
386	int nthreads	625	int nthreads
387	PROTOTYPE: $	626	PROTOTYPE: $
		627
		628	int
		629	max_outstanding(nreqs)
		630	int nreqs
		631	PROTOTYPE: $
388	CODE:	632	CODE:
389	{	633	RETVAL = max_outstanding;
390	int cur = started;	634	max_outstanding = nreqs;
391	while (cur > nthreads)
392	{
393	end_thread ();
394	cur--;
395	}
396		635
397	while (started > nthreads)
398	{
399	poll_wait ();
400	poll_cb (aTHX);
401	}
402	}
403
404	void	636	void
405	aio_open(pathname,flags,mode,callback)	637	aio_open(pathname,flags,mode,callback=&PL_sv_undef)
406	SV * pathname	638	SV * pathname
407	int flags	639	int flags
408	int mode	640	int mode
409	SV * callback	641	SV * callback
410	PROTOTYPE: $$$$	642	PROTOTYPE: $$$;$
411	CODE:	643	CODE:
412	{	644	{
413	aio_req req;	645	dREQ;
414
415	Newz (0, req, 1, aio_cb);
416
417	if (!req)
418	croak ("out of memory during aio_req allocation");
419		646
420	req->type = REQ_OPEN;	647	req->type = REQ_OPEN;
421	req->data = newSVsv (pathname);	648	req->data = newSVsv (pathname);
422	req->dataptr = SvPV_nolen (req->data);	649	req->dataptr = SvPVbyte_nolen (req->data);
423	req->fd = flags;	650	req->fd = flags;
424	req->mode = mode;	651	req->mode = mode;
425	req->callback = SvREFCNT_inc (callback);
426		652
427	send_req (req);	653	send_req (req);
428	}	654	}
429		655
430	void	656	void
431	aio_close(fh,callback)	657	aio_close(fh,callback=&PL_sv_undef)
432	InputStream fh	658	SV * fh
433	SV * callback	659	SV * callback
434	PROTOTYPE: $$	660	PROTOTYPE: $;$
435	ALIAS:	661	ALIAS:
436	aio_close = REQ_CLOSE	662	aio_close = REQ_CLOSE
437	aio_fsync = REQ_FSYNC	663	aio_fsync = REQ_FSYNC
438	aio_fdatasync = REQ_FDATASYNC	664	aio_fdatasync = REQ_FDATASYNC
439	CODE:	665	CODE:
440	{	666	{
		667	dREQ;
		668
		669	req->type = ix;
		670	req->fh = newSVsv (fh);
		671	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
		672
		673	send_req (req);
		674	}
		675
		676	void
		677	aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
		678	SV * fh
		679	UV offset
		680	UV length
		681	SV * data
		682	UV dataoffset
		683	SV * callback
		684	ALIAS:
		685	aio_read = REQ_READ
		686	aio_write = REQ_WRITE
		687	PROTOTYPE: $$$$$;$
		688	CODE:
		689	{
441	aio_req req;	690	aio_req req;
		691	STRLEN svlen;
		692	char *svptr = SvPVbyte (data, svlen);
442		693
443	Newz (0, req, 1, aio_cb);	694	SvUPGRADE (data, SVt_PV);
		695	SvPOK_on (data);
444		696
445	if (!req)	697	if (dataoffset < 0)
446	croak ("out of memory during aio_req allocation");	698	dataoffset += svlen;
447		699
448	req->type = ix;	700	if (dataoffset < 0 \|\| dataoffset > svlen)
449	req->fd = PerlIO_fileno (fh);	701	croak ("data offset outside of string");
450	req->callback = SvREFCNT_inc (callback);
451		702
452	send_req (req);	703	if (ix == REQ_WRITE)
453	}	704	{
454		705	/* write: check length and adjust. */
455	void	706	if (length < 0 \|\| length + dataoffset > svlen)
456	aio_read(fh,offset,length,data,dataoffset,callback)	707	length = svlen - dataoffset;
457	InputStream fh	708	}
458	UV offset	709	else
459	IV length	710	{
460	SV * data	711	/* read: grow scalar as necessary */
461	IV dataoffset	712	svptr = SvGROW (data, length + dataoffset);
462	SV * callback	713	}
463	PROTOTYPE: $$$$$$
464	CODE:
465	read_write (aTHX_ 0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
466
467	void
468	aio_write(fh,offset,length,data,dataoffset,callback)
469	OutputStream fh
470	UV offset
471	IV length
472	SV * data
473	IV dataoffset
474	SV * callback
475	PROTOTYPE: $$$$$$
476	CODE:
477	read_write (aTHX_ 1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
478
479	void
480	aio_readahead(fh,offset,length,callback)
481	InputStream fh
482	UV offset
483	IV length
484	SV * callback
485	PROTOTYPE: $$$$
486	CODE:
487	{
488	aio_req req;
489		714
490	if (length < 0)	715	if (length < 0)
491	croak ("length must not be negative");	716	croak ("length must not be negative");
492		717
493	Newz (0, req, 1, aio_cb);	718	{
		719	dREQ;
494		720
495	if (!req)	721	req->type = ix;
496	croak ("out of memory during aio_req allocation");	722	req->fh = newSVsv (fh);
		723	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
		724	: IoOFP (sv_2io (fh)));
		725	req->offset = offset;
		726	req->length = length;
		727	req->data = SvREFCNT_inc (data);
		728	req->dataptr = (char *)svptr + dataoffset;
		729
		730	if (!SvREADONLY (data))
		731	{
		732	SvREADONLY_on (data);
		733	req->data2ptr = (void *)data;
		734	}
		735
		736	send_req (req);
		737	}
		738	}
		739
		740	void
		741	aio_sendfile(out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)
		742	SV * out_fh
		743	SV * in_fh
		744	UV in_offset
		745	UV length
		746	SV * callback
		747	PROTOTYPE: $$$$;$
		748	CODE:
		749	{
		750	dREQ;
		751
		752	req->type = REQ_SENDFILE;
		753	req->fh = newSVsv (out_fh);
		754	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
		755	req->fh2 = newSVsv (in_fh);
		756	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
		757	req->offset = in_offset;
		758	req->length = length;
		759
		760	send_req (req);
		761	}
		762
		763	void
		764	aio_readahead(fh,offset,length,callback=&PL_sv_undef)
		765	SV * fh
		766	UV offset
		767	IV length
		768	SV * callback
		769	PROTOTYPE: $$$;$
		770	CODE:
		771	{
		772	dREQ;
497		773
498	req->type = REQ_READAHEAD;	774	req->type = REQ_READAHEAD;
		775	req->fh = newSVsv (fh);
499	req->fd = PerlIO_fileno (fh);	776	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
500	req->offset = offset;	777	req->offset = offset;
501	req->length = length;	778	req->length = length;
502	req->callback = SvREFCNT_inc (callback);
503		779
504	send_req (req);	780	send_req (req);
505	}	781	}
506		782
507	void	783	void
508	aio_stat(fh_or_path,callback)	784	aio_stat(fh_or_path,callback=&PL_sv_undef)
509	SV * fh_or_path	785	SV * fh_or_path
510	SV * callback	786	SV * callback
511	PROTOTYPE: $$
512	ALIAS:	787	ALIAS:
		788	aio_stat = REQ_STAT
513	aio_lstat = 1	789	aio_lstat = REQ_LSTAT
514	CODE:	790	CODE:
515	{	791	{
516	aio_req req;	792	dREQ;
517
518	Newz (0, req, 1, aio_cb);
519
520	if (!req)
521	croak ("out of memory during aio_req allocation");
522		793
523	New (0, req->statdata, 1, Stat_t);	794	New (0, req->statdata, 1, Stat_t);
524
525	if (!req->statdata)	795	if (!req->statdata)
		796	{
		797	free_req (req);
526	croak ("out of memory during aio_req->statdata allocation");	798	croak ("out of memory during aio_req->statdata allocation");
		799	}
527		800
528	if (SvPOK (fh_or_path))	801	if (SvPOK (fh_or_path))
529	{	802	{
530	req->type = ix ? REQ_LSTAT : REQ_STAT;	803	req->type = ix;
531	req->data = newSVsv (fh_or_path);	804	req->data = newSVsv (fh_or_path);
532	req->dataptr = SvPV_nolen (req->data);	805	req->dataptr = SvPVbyte_nolen (req->data);
533	}	806	}
534	else	807	else
535	{	808	{
536	req->type = REQ_FSTAT;	809	req->type = REQ_FSTAT;
		810	req->fh = newSVsv (fh_or_path);
537	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	811	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
538	}	812	}
539		813
540	req->callback = SvREFCNT_inc (callback);
541
542	send_req (req);	814	send_req (req);
543	}	815	}
544		816
545	void	817	void
546	aio_unlink(pathname,callback)	818	aio_unlink(pathname,callback=&PL_sv_undef)
547	SV * pathname	819	SV * pathname
548	SV * callback	820	SV * callback
549	PROTOTYPE: $$	821	ALIAS:
		822	aio_unlink = REQ_UNLINK
		823	aio_rmdir = REQ_RMDIR
550	CODE:	824	CODE:
551	{	825	{
552	aio_req req;	826	dREQ;
553		827
554	Newz (0, req, 1, aio_cb);	828	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);	829	req->data = newSVsv (pathname);
561	req->dataptr = SvPV_nolen (req->data);	830	req->dataptr = SvPVbyte_nolen (req->data);
562	req->callback = SvREFCNT_inc (callback);
563		831
564	send_req (req);	832	send_req (req);
565	}	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;
		843
		844	req->type = REQ_SYMLINK;
		845	req->fh = newSVsv (oldpath);
		846	req->data2ptr = SvPVbyte_nolen (req->fh);
		847	req->data = newSVsv (newpath);
		848	req->dataptr = SvPVbyte_nolen (req->data);
		849
		850	send_req (req);
		851	}
		852
		853	void
		854	flush()
		855	PROTOTYPE:
		856	CODE:
		857	while (nreqs)
		858	{
		859	poll_wait ();
		860	poll_cb ();
		861	}
		862
		863	void
		864	poll()
		865	PROTOTYPE:
		866	CODE:
		867	if (nreqs)
		868	{
		869	poll_wait ();
		870	poll_cb ();
		871	}
566		872
567	int	873	int
568	poll_fileno()	874	poll_fileno()
569	PROTOTYPE:	875	PROTOTYPE:
570	CODE:	876	CODE:
…		…
574		880
575	int	881	int
576	poll_cb(...)	882	poll_cb(...)
577	PROTOTYPE:	883	PROTOTYPE:
578	CODE:	884	CODE:
579	RETVAL = poll_cb (aTHX);	885	RETVAL = poll_cb ();
580	OUTPUT:	886	OUTPUT:
581	RETVAL	887	RETVAL
582		888
583	void	889	void
584	poll_wait()	890	poll_wait()

Diff Legend

-–
+Removed lines
-+
+Added lines
-<
+Changed lines
->
+Changed lines

Comparing IO-AIO/AIO.xs (file contents): Revision 1.3 by root, Sun Jul 10 20:07:11 2005 UTC vs. Revision 1.33 by root, Mon Aug 22 23:21:57 2005 UTC

Diff Legend

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.3 by root, Sun Jul 10 20:07:11 2005 UTC vs.
Revision 1.33 by root, Mon Aug 22 23:21:57 2005 UTC