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

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.4 by root, Sun Jul 10 20:57:00 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>
17		25	# include <sys/uio.h>
18	typedef void InputStream; / hack, but 5.6.1 is simply toooo old ;) */	26	# elif __hpux
19	typedef void OutputStream; / hack, but 5.6.1 is simply toooo old ;) */	27	# include <sys/socket.h>
20	typedef void InOutStream; / hack, but 5.6.1 is simply toooo old ;) */	28	# endif
		29	#endif
21		30
22	#if __ia64	31	#if __ia64
23	# define STACKSIZE 65536	32	# define STACKSIZE 65536
24	#else	33	#else
25	# define STACKSIZE 4096	34	# define STACKSIZE 4096
27		36
28	enum {	37	enum {
29	REQ_QUIT,	38	REQ_QUIT,
30	REQ_OPEN, REQ_CLOSE,	39	REQ_OPEN, REQ_CLOSE,
31	REQ_READ, REQ_WRITE, REQ_READAHEAD,	40	REQ_READ, REQ_WRITE, REQ_READAHEAD,
		41	REQ_SENDFILE,
32	REQ_STAT, REQ_LSTAT, REQ_FSTAT, REQ_UNLINK,	42	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
33	REQ_FSYNC, REQ_FDATASYNC,	43	REQ_FSYNC, REQ_FDATASYNC,
		44	REQ_UNLINK, REQ_RMDIR,
		45	REQ_SYMLINK,
34	};	46	};
35		47
36	typedef struct aio_cb {	48	typedef struct aio_cb {
37	struct aio_cb *volatile next;	49	struct aio_cb *volatile next;
38		50
39	int type;	51	int type;
40		52
41	int fd;	53	int fd, fd2;
42	off_t offset;	54	off_t offset;
43	size_t length;	55	size_t length;
44	ssize_t result;	56	ssize_t result;
45	mode_t mode; /* open */	57	mode_t mode; /* open */
46	int errorno;	58	int errorno;
47	SV data, callback;	59	SV data, callback;
48	void *dataptr;	60	SV fh, fh2;
		61	void dataptr, data2ptr;
49	STRLEN dataoffset;	62	STRLEN dataoffset;
50		63
51	Stat_t *statdata;	64	Stat_t *statdata;
52	} aio_cb;	65	} aio_cb;
53		66
54	typedef aio_cb *aio_req;	67	typedef aio_cb *aio_req;
55		68
56	static int started;	69	static int started, wanted;
57	static int nreqs;	70	static volatile int nreqs;
58	static int max_outstanding = 1<<30;	71	static int max_outstanding = 1<<30;
59	static int respipe [2];	72	static int respipe [2];
60		73
61	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	74	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;
62	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;	75	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
63	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	76	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
64		77
65	static volatile aio_req reqs, reqe; /* queue start, queue end */	78	static volatile aio_req reqs, reqe; /* queue start, queue end */
66	static volatile aio_req ress, rese; /* queue start, queue end */	79	static volatile aio_req ress, rese; /* queue start, queue end */
67		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
68	static void	101	static void
69	poll_wait ()	102	poll_wait ()
70	{	103	{
71	if (!nreqs)	104	if (nreqs && !ress)
72	return;	105	{
73
74	fd_set rfd;	106	fd_set rfd;
75	FD_ZERO(&rfd);	107	FD_ZERO(&rfd);
76	FD_SET(respipe [0], &rfd);	108	FD_SET(respipe [0], &rfd);
77		109
78	select (respipe [0] + 1, &rfd, 0, 0, 0);	110	select (respipe [0] + 1, &rfd, 0, 0, 0);
		111	}
79	}	112	}
80		113
81	static int	114	static int
82	poll_cb (pTHX)	115	poll_cb ()
83	{	116	{
84	dSP;	117	dSP;
85	int count = 0;	118	int count = 0;
		119	int do_croak = 0;
86	aio_req req;	120	aio_req req;
87
88	{
89	/* read and signals sent by the worker threads */
90	char buf [32];
91	while (read (respipe [0], buf, 32) > 0)
92	;
93	}
94		121
95	for (;;)	122	for (;;)
96	{	123	{
97	pthread_mutex_lock (&reslock);	124	pthread_mutex_lock (&reslock);
98
99	req = ress;	125	req = ress;
100		126
101	if (ress)	127	if (req)
102	{	128	{
103	ress = ress->next;	129	ress = req->next;
		130
104	if (!ress) rese = 0;	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	}
105	}	140	}
106		141
107	pthread_mutex_unlock (&reslock);	142	pthread_mutex_unlock (&reslock);
108		143
109	if (!req)	144	if (!req)
…		…
117	{	152	{
118	int errorno = errno;	153	int errorno = errno;
119	errno = req->errorno;	154	errno = req->errorno;
120		155
121	if (req->type == REQ_READ)	156	if (req->type == REQ_READ)
122	SvCUR_set (req->data, req->dataoffset	157	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
123	+ req->result > 0 ? req->result : 0);
124		158
		159	if (req->data2ptr && (req->type == REQ_READ \|\| req->type == REQ_WRITE))
		160	SvREADONLY_off (req->data);
		161
125	if (req->data)	162	if (req->statdata)
126	SvREFCNT_dec (req->data);
127
128	if (req->type == REQ_STAT \|\| req->type == REQ_LSTAT \|\| req->type == REQ_FSTAT)
129	{	163	{
130	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	164	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
131	PL_laststatval = req->result;	165	PL_laststatval = req->result;
132	PL_statcache = *(req->statdata);	166	PL_statcache = *(req->statdata);
133
134	Safefree (req->statdata);
135	}	167	}
136		168
		169	ENTER;
137	PUSHMARK (SP);	170	PUSHMARK (SP);
138	XPUSHs (sv_2mortal (newSViv (req->result)));	171	XPUSHs (sv_2mortal (newSViv (req->result)));
139		172
140	if (req->type == REQ_OPEN)	173	if (req->type == REQ_OPEN)
141	{	174	{
…		…
144		177
145	PUTBACK;	178	PUTBACK;
146	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);	179	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);
147	SPAGAIN;	180	SPAGAIN;
148		181
149	fh = POPs;	182	fh = SvREFCNT_inc (POPs);
150		183
151	PUSHMARK (SP);	184	PUSHMARK (SP);
152	XPUSHs (fh);	185	XPUSHs (sv_2mortal (fh));
153	}	186	}
154		187
		188	if (SvOK (req->callback))
		189	{
155	PUTBACK;	190	PUTBACK;
156	call_sv (req->callback, G_VOID \| G_EVAL);	191	call_sv (req->callback, G_VOID \| G_EVAL);
157	SPAGAIN;	192	SPAGAIN;
		193
		194	if (SvTRUE (ERRSV))
		195	{
		196	free_req (req);
		197	croak (0);
		198	}
158		199	}
159	if (req->callback)	200
160	SvREFCNT_dec (req->callback);	201	LEAVE;
161		202
162	errno = errorno;	203	errno = errorno;
163	count++;	204	count++;
164	}	205	}
165		206
166	Safefree (req);	207	free_req (req);
167	}	208	}
168		209
169	return count;	210	return count;
170	}	211	}
171		212
…		…
192	}	233	}
193		234
194	static void	235	static void
195	send_req (aio_req req)	236	send_req (aio_req req)
196	{	237	{
		238	while (started < wanted && nreqs >= started)
		239	start_thread ();
		240
197	nreqs++;	241	nreqs++;
198		242
199	pthread_mutex_lock (&reqlock);	243	pthread_mutex_lock (&reqlock);
200		244
201	req->next = 0;	245	req->next = 0;
…		…
209	reqe = reqs = req;	253	reqe = reqs = req;
210		254
211	pthread_cond_signal (&reqwait);	255	pthread_cond_signal (&reqwait);
212	pthread_mutex_unlock (&reqlock);	256	pthread_mutex_unlock (&reqlock);
213		257
214	while (nreqs > max_outstanding)	258	if (nreqs > max_outstanding)
		259	for (;;)
		260	{
		261	poll_cb ();
		262
		263	if (nreqs <= max_outstanding)
		264	break;
		265
		266	poll_wait ();
		267	}
		268	}
		269
		270	static void
		271	end_thread (void)
		272	{
		273	aio_req req;
		274	Newz (0, req, 1, aio_cb);
		275	req->type = REQ_QUIT;
		276
		277	send_req (req);
		278	}
		279
		280	static void min_parallel (int nthreads)
		281	{
		282	if (wanted < nthreads)
		283	wanted = nthreads;
		284	}
		285
		286	static void max_parallel (int nthreads)
		287	{
		288	int cur = started;
		289
		290	if (wanted > nthreads)
		291	wanted = nthreads;
		292
		293	while (cur > wanted)
		294	{
		295	end_thread ();
		296	cur--;
		297	}
		298
		299	while (started > wanted)
215	{	300	{
216	poll_wait ();	301	poll_wait ();
217	poll_cb ();	302	poll_cb ();
218	}	303	}
219	}	304	}
220		305
221	static void	306	static void create_pipe ()
222	end_thread (void)
223	{	307	{
		308	if (pipe (respipe))
		309	croak ("unable to initialize result pipe");
		310
		311	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
		312	croak ("cannot set result pipe to nonblocking mode");
		313
		314	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
		315	croak ("cannot set result pipe to nonblocking mode");
		316	}
		317
		318	static void atfork_prepare (void)
		319	{
		320	pthread_mutex_lock (&reqlock);
		321	pthread_mutex_lock (&reslock);
		322	}
		323
		324	static void atfork_parent (void)
		325	{
		326	pthread_mutex_unlock (&reslock);
		327	pthread_mutex_unlock (&reqlock);
		328	}
		329
		330	static void atfork_child (void)
		331	{
224	aio_req req;	332	aio_req prv;
225	New (0, req, 1, aio_cb);
226	req->type = REQ_QUIT;
227		333
228	send_req (req);	334	started = 0;
229	}
230		335
231	static void	336	while (reqs)
232	read_write (pTHX_
233	int dowrite, int fd, off_t offset, size_t length,
234	SV data, STRLEN dataoffset, SV callback)
235	{
236	aio_req req;
237	STRLEN svlen;
238	char *svptr = SvPV (data, svlen);
239
240	SvUPGRADE (data, SVt_PV);
241	SvPOK_on (data);
242
243	if (dataoffset < 0)
244	dataoffset += svlen;
245
246	if (dataoffset < 0 \|\| dataoffset > svlen)
247	croak ("data offset outside of string");
248
249	if (dowrite)
250	{	337	{
251	/* write: check length and adjust. */	338	prv = reqs;
252	if (length < 0 \|\| length + dataoffset > svlen)	339	reqs = prv->next;
253	length = svlen - dataoffset;	340	free_req (prv);
254	}	341	}
255	else	342
		343	reqs = reqe = 0;
		344
		345	while (ress)
256	{	346	{
257	/* read: grow scalar as necessary */	347	prv = ress;
258	svptr = SvGROW (data, length + dataoffset);	348	ress = prv->next;
		349	free_req (prv);
259	}	350	}
		351
		352	ress = rese = 0;
260		353
261	if (length < 0)	354	close (respipe [0]);
262	croak ("length must not be negative");	355	close (respipe [1]);
		356	create_pipe ();
263		357
264	Newz (0, req, 1, aio_cb);	358	atfork_parent ();
265
266	if (!req)
267	croak ("out of memory during aio_req allocation");
268
269	req->type = dowrite ? REQ_WRITE : REQ_READ;
270	req->fd = fd;
271	req->offset = offset;
272	req->length = length;
273	req->data = SvREFCNT_inc (data);
274	req->dataptr = (char *)svptr + dataoffset;
275	req->callback = SvREFCNT_inc (callback);
276
277	send_req (req);
278	}	359	}
		360
		361	/*****************************************************************************/
		362	/* work around various missing functions */
		363
		364	#if !HAVE_PREADWRITE
		365	# define pread aio_pread
		366	# define pwrite aio_pwrite
		367
		368	/*
		369	* make our pread/pwrite safe against themselves, but not against
		370	* normal read/write by using a mutex. slows down execution a lot,
		371	* but that's your problem, not mine.
		372	*/
		373	static pthread_mutex_t iolock = PTHREAD_MUTEX_INITIALIZER;
		374
		375	static ssize_t
		376	pread (int fd, void *buf, size_t count, off_t offset)
		377	{
		378	ssize_t res;
		379	off_t ooffset;
		380
		381	pthread_mutex_lock (&iolock);
		382	ooffset = lseek (fd, 0, SEEK_CUR);
		383	lseek (fd, offset, SEEK_SET);
		384	res = read (fd, buf, count);
		385	lseek (fd, ooffset, SEEK_SET);
		386	pthread_mutex_unlock (&iolock);
		387
		388	return res;
		389	}
		390
		391	static ssize_t
		392	pwrite (int fd, void *buf, size_t count, off_t offset)
		393	{
		394	ssize_t res;
		395	off_t ooffset;
		396
		397	pthread_mutex_lock (&iolock);
		398	ooffset = lseek (fd, 0, SEEK_CUR);
		399	lseek (fd, offset, SEEK_SET);
		400	res = write (fd, buf, count);
		401	lseek (fd, offset, SEEK_SET);
		402	pthread_mutex_unlock (&iolock);
		403
		404	return res;
		405	}
		406	#endif
		407
		408	#if !HAVE_FDATASYNC
		409	# define fdatasync fsync
		410	#endif
		411
		412	#if !HAVE_READAHEAD
		413	# define readahead aio_readahead
		414
		415	static char readahead_buf[4096];
		416
		417	static ssize_t
		418	readahead (int fd, off_t offset, size_t count)
		419	{
		420	while (count > 0)
		421	{
		422	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
		423
		424	pread (fd, readahead_buf, len, offset);
		425	offset += len;
		426	count -= len;
		427	}
		428
		429	errno = 0;
		430	}
		431	#endif
		432
		433	/* sendfile always needs emulation */
		434	static ssize_t
		435	sendfile_ (int ofd, int ifd, off_t offset, size_t count)
		436	{
		437	ssize_t res;
		438
		439	if (!count)
		440	return 0;
		441
		442	#if __linux
		443	res = sendfile (ofd, ifd, &offset, count);
		444
		445	#elif __freebsd
		446	/*
		447	* Of course, the freebsd sendfile is a dire hack with no thoughts
		448	* wasted on making it similar to other i/o functions.
		449	*/
		450	{
		451	off_t sbytes;
		452	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
		453
		454	if (!res && errno == EAGAIN)
		455	/* maybe on others, too, as usual, the manpage leaves you guessing */
		456	res = sbytes;
		457	}
		458
		459	#elif __hpux
		460	res = sendfile (ofd, ifd, offset, count, 0, 0);
		461
		462	#else
		463	res = -1;
		464	errno = ENOSYS;
		465	#endif
		466
		467	if (res < 0 && (errno == ENOSYS \|\| errno == EINVAL \|\| errno == ENOTSOCK))
		468	{
		469	/* emulate sendfile. this is a major pain in the ass */
		470	char *buf = malloc (4096);
		471	res = 0;
		472
		473	for (;;)
		474	{
		475	ssize_t cnt;
		476
		477	cnt = pread (ifd, buf, 4096, offset);
		478
		479	if (cnt <= 0)
		480	{
		481	if (cnt && !res) res = -1;
		482	break;
		483	}
		484
		485	cnt = write (ofd, buf, cnt);
		486
		487	if (cnt <= 0)
		488	{
		489	if (cnt && !res) res = -1;
		490	break;
		491	}
		492
		493	offset += cnt;
		494	res += cnt;
		495	}
		496
		497	{
		498	int errorno = errno;
		499	free (buf);
		500	errno = errorno;
		501	}
		502	}
		503
		504	return res;
		505	}
		506
		507	/*****************************************************************************/
279		508
280	static void *	509	static void *
281	aio_proc (void *thr_arg)	510	aio_proc (void *thr_arg)
282	{	511	{
283	aio_req req;	512	aio_req req;
…		…
309		538
310	type = req->type;	539	type = req->type;
311		540
312	switch (type)	541	switch (type)
313	{	542	{
314	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;
315	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;
316	#if SYS_readahead	545
317	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	546	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
318	#else	547	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
319	case REQ_READAHEAD: req->result = -1; errno = ENOSYS; break;
320	#endif
321		548
322	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	549	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
323	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	550	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
324	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	551	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
325		552
326	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;	553	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
327	case REQ_CLOSE: req->result = close (req->fd); break;	554	case REQ_CLOSE: req->result = close (req->fd); break;
328	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	555	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
		556	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
		557	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
329		558
		559	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
330	case REQ_FSYNC: req->result = fsync (req->fd); break;	560	case REQ_FSYNC: req->result = fsync (req->fd); break;
331	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
332		561
333	case REQ_QUIT:	562	case REQ_QUIT:
334	break;	563	break;
335		564
336	default:	565	default:
…		…
362	while (type != REQ_QUIT);	591	while (type != REQ_QUIT);
363		592
364	return 0;	593	return 0;
365	}	594	}
366		595
		596	#define dREQ \
		597	aio_req req; \
		598	\
		599	if (SvOK (callback) && !SvROK (callback)) \
		600	croak ("clalback must be undef or of reference type"); \
		601	\
		602	Newz (0, req, 1, aio_cb); \
		603	if (!req) \
		604	croak ("out of memory during aio_req allocation"); \
		605	\
		606	req->callback = newSVsv (callback);
		607
367	MODULE = IO::AIO PACKAGE = IO::AIO	608	MODULE = IO::AIO PACKAGE = IO::AIO
368		609
		610	PROTOTYPES: ENABLE
		611
369	BOOT:	612	BOOT:
370	{	613	{
371	if (pipe (respipe))	614	create_pipe ();
372	croak ("unable to initialize result pipe");	615	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
373
374	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
375	croak ("cannot set result pipe to nonblocking mode");
376
377	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
378	croak ("cannot set result pipe to nonblocking mode");
379	}	616	}
380		617
381	void	618	void
382	min_parallel(nthreads)	619	min_parallel(nthreads)
383	int nthreads	620	int nthreads
384	PROTOTYPE: $	621	PROTOTYPE: $
385	CODE:
386	while (nthreads > started)
387	start_thread ();
388		622
389	void	623	void
390	max_parallel(nthreads)	624	max_parallel(nthreads)
391	int nthreads	625	int nthreads
392	PROTOTYPE: $	626	PROTOTYPE: $
393	CODE:
394	{
395	int cur = started;
396	while (cur > nthreads)
397	{
398	end_thread ();
399	cur--;
400	}
401
402	while (started > nthreads)
403	{
404	poll_wait ();
405	poll_cb (aTHX);
406	}
407	}
408		627
409	int	628	int
410	max_outstanding(nreqs)	629	max_outstanding(nreqs)
411	int nreqs	630	int nreqs
412	PROTOTYPE: $	631	PROTOTYPE: $
413	CODE:	632	CODE:
414	RETVAL = max_outstanding;	633	RETVAL = max_outstanding;
415	max_outstanding = nreqs;	634	max_outstanding = nreqs;
416		635
417	void	636	void
418	aio_open(pathname,flags,mode,callback)	637	aio_open(pathname,flags,mode,callback=&PL_sv_undef)
419	SV * pathname	638	SV * pathname
420	int flags	639	int flags
421	int mode	640	int mode
422	SV * callback	641	SV * callback
423	PROTOTYPE: $$$$	642	PROTOTYPE: $$$;$
424	CODE:	643	CODE:
425	{	644	{
426	aio_req req;	645	dREQ;
427
428	Newz (0, req, 1, aio_cb);
429
430	if (!req)
431	croak ("out of memory during aio_req allocation");
432		646
433	req->type = REQ_OPEN;	647	req->type = REQ_OPEN;
434	req->data = newSVsv (pathname);	648	req->data = newSVsv (pathname);
435	req->dataptr = SvPV_nolen (req->data);	649	req->dataptr = SvPVbyte_nolen (req->data);
436	req->fd = flags;	650	req->fd = flags;
437	req->mode = mode;	651	req->mode = mode;
438	req->callback = SvREFCNT_inc (callback);
439		652
440	send_req (req);	653	send_req (req);
441	}	654	}
442		655
443	void	656	void
444	aio_close(fh,callback)	657	aio_close(fh,callback=&PL_sv_undef)
445	InputStream fh	658	SV * fh
446	SV * callback	659	SV * callback
447	PROTOTYPE: $$	660	PROTOTYPE: $;$
448	ALIAS:	661	ALIAS:
449	aio_close = REQ_CLOSE	662	aio_close = REQ_CLOSE
450	aio_fsync = REQ_FSYNC	663	aio_fsync = REQ_FSYNC
451	aio_fdatasync = REQ_FDATASYNC	664	aio_fdatasync = REQ_FDATASYNC
452	CODE:	665	CODE:
453	{	666	{
		667	dREQ;
		668
		669	req->type = ix;
		670	req->fh = newSVsv (fh);
		671	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
		672
		673	send_req (req);
		674	}
		675
		676	void
		677	aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
		678	SV * fh
		679	UV offset
		680	UV length
		681	SV * data
		682	UV dataoffset
		683	SV * callback
		684	ALIAS:
		685	aio_read = REQ_READ
		686	aio_write = REQ_WRITE
		687	PROTOTYPE: $$$$$;$
		688	CODE:
		689	{
454	aio_req req;	690	aio_req req;
		691	STRLEN svlen;
		692	char *svptr = SvPVbyte (data, svlen);
455		693
456	Newz (0, req, 1, aio_cb);	694	SvUPGRADE (data, SVt_PV);
		695	SvPOK_on (data);
457		696
458	if (!req)	697	if (dataoffset < 0)
459	croak ("out of memory during aio_req allocation");	698	dataoffset += svlen;
460		699
461	req->type = ix;	700	if (dataoffset < 0 \|\| dataoffset > svlen)
462	req->fd = PerlIO_fileno (fh);	701	croak ("data offset outside of string");
463	req->callback = SvREFCNT_inc (callback);
464		702
465	send_req (req);	703	if (ix == REQ_WRITE)
466	}	704	{
467		705	/* write: check length and adjust. */
468	void	706	if (length < 0 \|\| length + dataoffset > svlen)
469	aio_read(fh,offset,length,data,dataoffset,callback)	707	length = svlen - dataoffset;
470	InputStream fh	708	}
471	UV offset	709	else
472	IV length	710	{
473	SV * data	711	/* read: grow scalar as necessary */
474	IV dataoffset	712	svptr = SvGROW (data, length + dataoffset);
475	SV * callback	713	}
476	PROTOTYPE: $$$$$$
477	CODE:
478	read_write (aTHX_ 0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
479
480	void
481	aio_write(fh,offset,length,data,dataoffset,callback)
482	OutputStream fh
483	UV offset
484	IV length
485	SV * data
486	IV dataoffset
487	SV * callback
488	PROTOTYPE: $$$$$$
489	CODE:
490	read_write (aTHX_ 1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
491
492	void
493	aio_readahead(fh,offset,length,callback)
494	InputStream fh
495	UV offset
496	IV length
497	SV * callback
498	PROTOTYPE: $$$$
499	CODE:
500	{
501	aio_req req;
502		714
503	if (length < 0)	715	if (length < 0)
504	croak ("length must not be negative");	716	croak ("length must not be negative");
505		717
506	Newz (0, req, 1, aio_cb);	718	{
		719	dREQ;
507		720
508	if (!req)	721	req->type = ix;
509	croak ("out of memory during aio_req allocation");	722	req->fh = newSVsv (fh);
		723	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
		724	: IoOFP (sv_2io (fh)));
		725	req->offset = offset;
		726	req->length = length;
		727	req->data = SvREFCNT_inc (data);
		728	req->dataptr = (char *)svptr + dataoffset;
		729
		730	if (!SvREADONLY (data))
		731	{
		732	SvREADONLY_on (data);
		733	req->data2ptr = (void *)data;
		734	}
		735
		736	send_req (req);
		737	}
		738	}
		739
		740	void
		741	aio_sendfile(out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)
		742	SV * out_fh
		743	SV * in_fh
		744	UV in_offset
		745	UV length
		746	SV * callback
		747	PROTOTYPE: $$$$;$
		748	CODE:
		749	{
		750	dREQ;
		751
		752	req->type = REQ_SENDFILE;
		753	req->fh = newSVsv (out_fh);
		754	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
		755	req->fh2 = newSVsv (in_fh);
		756	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
		757	req->offset = in_offset;
		758	req->length = length;
		759
		760	send_req (req);
		761	}
		762
		763	void
		764	aio_readahead(fh,offset,length,callback=&PL_sv_undef)
		765	SV * fh
		766	UV offset
		767	IV length
		768	SV * callback
		769	PROTOTYPE: $$$;$
		770	CODE:
		771	{
		772	dREQ;
510		773
511	req->type = REQ_READAHEAD;	774	req->type = REQ_READAHEAD;
		775	req->fh = newSVsv (fh);
512	req->fd = PerlIO_fileno (fh);	776	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
513	req->offset = offset;	777	req->offset = offset;
514	req->length = length;	778	req->length = length;
515	req->callback = SvREFCNT_inc (callback);
516		779
517	send_req (req);	780	send_req (req);
518	}	781	}
519		782
520	void	783	void
521	aio_stat(fh_or_path,callback)	784	aio_stat(fh_or_path,callback=&PL_sv_undef)
522	SV * fh_or_path	785	SV * fh_or_path
523	SV * callback	786	SV * callback
524	PROTOTYPE: $$
525	ALIAS:	787	ALIAS:
		788	aio_stat = REQ_STAT
526	aio_lstat = 1	789	aio_lstat = REQ_LSTAT
527	CODE:	790	CODE:
528	{	791	{
529	aio_req req;	792	dREQ;
530
531	Newz (0, req, 1, aio_cb);
532
533	if (!req)
534	croak ("out of memory during aio_req allocation");
535		793
536	New (0, req->statdata, 1, Stat_t);	794	New (0, req->statdata, 1, Stat_t);
537
538	if (!req->statdata)	795	if (!req->statdata)
		796	{
		797	free_req (req);
539	croak ("out of memory during aio_req->statdata allocation");	798	croak ("out of memory during aio_req->statdata allocation");
		799	}
540		800
541	if (SvPOK (fh_or_path))	801	if (SvPOK (fh_or_path))
542	{	802	{
543	req->type = ix ? REQ_LSTAT : REQ_STAT;	803	req->type = ix;
544	req->data = newSVsv (fh_or_path);	804	req->data = newSVsv (fh_or_path);
545	req->dataptr = SvPV_nolen (req->data);	805	req->dataptr = SvPVbyte_nolen (req->data);
546	}	806	}
547	else	807	else
548	{	808	{
549	req->type = REQ_FSTAT;	809	req->type = REQ_FSTAT;
		810	req->fh = newSVsv (fh_or_path);
550	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	811	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
551	}	812	}
552		813
553	req->callback = SvREFCNT_inc (callback);
554
555	send_req (req);	814	send_req (req);
556	}	815	}
557		816
558	void	817	void
559	aio_unlink(pathname,callback)	818	aio_unlink(pathname,callback=&PL_sv_undef)
560	SV * pathname	819	SV * pathname
561	SV * callback	820	SV * callback
562	PROTOTYPE: $$	821	ALIAS:
		822	aio_unlink = REQ_UNLINK
		823	aio_rmdir = REQ_RMDIR
563	CODE:	824	CODE:
564	{	825	{
565	aio_req req;	826	dREQ;
566		827
567	Newz (0, req, 1, aio_cb);	828	req->type = ix;
568
569	if (!req)
570	croak ("out of memory during aio_req allocation");
571
572	req->type = REQ_UNLINK;
573	req->data = newSVsv (pathname);	829	req->data = newSVsv (pathname);
574	req->dataptr = SvPV_nolen (req->data);	830	req->dataptr = SvPVbyte_nolen (req->data);
575	req->callback = SvREFCNT_inc (callback);
576		831
577	send_req (req);	832	send_req (req);
578	}	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	}
579		872
580	int	873	int
581	poll_fileno()	874	poll_fileno()
582	PROTOTYPE:	875	PROTOTYPE:
583	CODE:	876	CODE:
…		…
587		880
588	int	881	int
589	poll_cb(...)	882	poll_cb(...)
590	PROTOTYPE:	883	PROTOTYPE:
591	CODE:	884	CODE:
592	RETVAL = poll_cb (aTHX);	885	RETVAL = poll_cb ();
593	OUTPUT:	886	OUTPUT:
594	RETVAL	887	RETVAL
595		888
596	void	889	void
597	poll_wait()	890	poll_wait()

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Comparing IO-AIO/AIO.xs (file contents): Revision 1.4 by root, Sun Jul 10 20:57:00 2005 UTC vs. Revision 1.33 by root, Mon Aug 22 23:21:57 2005 UTC

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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.4 by root, Sun Jul 10 20:57:00 2005 UTC vs.
Revision 1.33 by root, Mon Aug 22 23:21:57 2005 UTC