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

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.2 by root, Sun Jul 10 18:16:49 2005 UTC vs.
Revision 1.21 by root, Sun Aug 7 03:26:10 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,
34	REQ_STAT, REQ_LSTAT, REQ_FSTAT, REQ_UNLINK,	34	REQ_STAT, REQ_LSTAT, REQ_FSTAT, REQ_UNLINK,
35	REQ_FSYNC, REQ_FDATASYNC,	35	REQ_FSYNC, REQ_FDATASYNC,
36	};	36	};
37		37
38	typedef struct aio_cb {	38	typedef struct aio_cb {
39	struct aio_cb *next;	39	struct aio_cb *volatile next;
40		40
41	int type;	41	int type;
42		42
43	int fd;	43	int fd;
44	off_t offset;	44	off_t offset;
45	size_t length;	45	size_t length;
46	ssize_t result;	46	ssize_t result;
47	mode_t mode; /* open */	47	mode_t mode; /* open */
48	int errorno;	48	int errorno;
49	SV data, callback;	49	SV data, callback, *fh;
50	void *dataptr;	50	void *dataptr;
51	STRLEN dataoffset;	51	STRLEN dataoffset;
52		52
53	Stat_t *statdata;	53	Stat_t *statdata;
54	} aio_cb;	54	} aio_cb;
55		55
56	typedef aio_cb *aio_req;	56	typedef aio_cb *aio_req;
57		57
58	static int started;	58	static int started;
59	static int nreqs;	59	static volatile int nreqs;
		60	static int max_outstanding = 1<<30;
60	static int reqpipe[2], respipe[2];	61	static int respipe [2];
61		62
		63	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;
		64	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
		65	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
		66
62	static aio_req qs, qe; /* queue start, queue end */	67	static volatile aio_req reqs, reqe; /* queue start, queue end */
63		68	static volatile aio_req ress, rese; /* queue start, queue end */
64	static void aio_proc(void arg);
65
66	static void
67	start_thread (void)
68	{
69	sigset_t fullsigset, oldsigset;
70	pthread_t tid;
71	pthread_attr_t attr;
72
73	pthread_attr_init (&attr);
74	pthread_attr_setstacksize (&attr, STACKSIZE);
75	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
76
77	sigfillset (&fullsigset);
78	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
79
80	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
81	started++;
82
83	sigprocmask (SIG_SETMASK, &oldsigset, 0);
84	}
85
86	static void
87	send_reqs (void)
88	{
89	/* this write is atomic */
90	while (qs && write (reqpipe[1], &qs, sizeof qs) == sizeof qs)
91	{
92	qs = qs->next;
93	if (!qs) qe = 0;
94	}
95	}
96
97	static void
98	send_req (aio_req req)
99	{
100	nreqs++;
101	req->next = 0;
102
103	if (qe)
104	{
105	qe->next = req;
106	qe = req;
107	}
108	else
109	qe = qs = req;
110
111	send_reqs ();
112	}
113
114	static void
115	end_thread (void)
116	{
117	aio_req req;
118	New (0, req, 1, aio_cb);
119	req->type = REQ_QUIT;
120
121	send_req (req);
122	}
123
124	static void
125	read_write (pTHX_
126	int dowrite, int fd, off_t offset, size_t length,
127	SV data, STRLEN dataoffset, SV callback)
128	{
129	aio_req req;
130	STRLEN svlen;
131	char *svptr = SvPV (data, svlen);
132
133	SvUPGRADE (data, SVt_PV);
134	SvPOK_on (data);
135
136	if (dataoffset < 0)
137	dataoffset += svlen;
138
139	if (dataoffset < 0 \|\| dataoffset > svlen)
140	croak ("data offset outside of string");
141
142	if (dowrite)
143	{
144	/* write: check length and adjust. */
145	if (length < 0 \|\| length + dataoffset > svlen)
146	length = svlen - dataoffset;
147	}
148	else
149	{
150	/* read: grow scalar as necessary */
151	svptr = SvGROW (data, length + dataoffset);
152	}
153
154	if (length < 0)
155	croak ("length must not be negative");
156
157	Newz (0, req, 1, aio_cb);
158
159	if (!req)
160	croak ("out of memory during aio_req allocation");
161
162	req->type = dowrite ? REQ_WRITE : REQ_READ;
163	req->fd = fd;
164	req->offset = offset;
165	req->length = length;
166	req->data = SvREFCNT_inc (data);
167	req->dataptr = (char *)svptr + dataoffset;
168	req->callback = SvREFCNT_inc (callback);
169
170	send_req (req);
171	}
172		69
173	static void	70	static void
174	poll_wait ()	71	poll_wait ()
175	{	72	{
		73	if (nreqs && !ress)
		74	{
176	fd_set rfd;	75	fd_set rfd;
177	FD_ZERO(&rfd);	76	FD_ZERO(&rfd);
178	FD_SET(respipe[0], &rfd);	77	FD_SET(respipe [0], &rfd);
179		78
180	select (respipe[0] + 1, &rfd, 0, 0, 0);	79	select (respipe [0] + 1, &rfd, 0, 0, 0);
		80	}
181	}	81	}
182		82
183	static int	83	static int
184	poll_cb (pTHX)	84	poll_cb ()
185	{	85	{
186	dSP;	86	dSP;
187	int count = 0;	87	int count = 0;
188	aio_req req;	88	aio_req req, prv;
189		89
190	while (read (respipe[0], (void *)&req, sizeof (req)) == sizeof (req))	90	pthread_mutex_lock (&reslock);
		91
		92	{
		93	/* read any signals sent by the worker threads */
		94	char buf [32];
		95	while (read (respipe [0], buf, 32) > 0)
		96	;
		97	}
		98
		99	req = ress;
		100	ress = rese = 0;
		101
		102	pthread_mutex_unlock (&reslock);
		103
		104	while (req)
191	{	105	{
192	nreqs--;	106	nreqs--;
193		107
194	if (req->type == REQ_QUIT)	108	if (req->type == REQ_QUIT)
195	started--;	109	started--;
…		…
203	+ req->result > 0 ? req->result : 0);	117	+ req->result > 0 ? req->result : 0);
204		118
205	if (req->data)	119	if (req->data)
206	SvREFCNT_dec (req->data);	120	SvREFCNT_dec (req->data);
207		121
		122	if (req->fh)
		123	SvREFCNT_dec (req->fh);
		124
208	if (req->type == REQ_STAT \|\| req->type == REQ_LSTAT \|\| req->type == REQ_FSTAT)	125	if (req->type == REQ_STAT \|\| req->type == REQ_LSTAT \|\| req->type == REQ_FSTAT)
209	{	126	{
210	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	127	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
211	PL_laststatval = req->result;	128	PL_laststatval = req->result;
212	PL_statcache = *(req->statdata);	129	PL_statcache = *(req->statdata);
213		130
214	Safefree (req->statdata);	131	Safefree (req->statdata);
215	}	132	}
216		133
		134	ENTER;
217	PUSHMARK (SP);	135	PUSHMARK (SP);
218	XPUSHs (sv_2mortal (newSViv (req->result)));	136	XPUSHs (sv_2mortal (newSViv (req->result)));
219		137
220	if (req->type == REQ_OPEN)	138	if (req->type == REQ_OPEN)
221	{	139	{
…		…
224		142
225	PUTBACK;	143	PUTBACK;
226	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);	144	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);
227	SPAGAIN;	145	SPAGAIN;
228		146
229	fh = POPs;	147	fh = SvREFCNT_inc (POPs);
230		148
231	PUSHMARK (SP);	149	PUSHMARK (SP);
232	XPUSHs (fh);	150	XPUSHs (sv_2mortal (fh));
233	}	151	}
234		152
		153	if (SvOK (req->callback))
		154	{
235	PUTBACK;	155	PUTBACK;
236	call_sv (req->callback, G_VOID \| G_EVAL);	156	call_sv (req->callback, G_VOID \| G_EVAL);
237	SPAGAIN;	157	SPAGAIN;
		158	}
		159
		160	LEAVE;
238		161
239	if (req->callback)	162	if (req->callback)
240	SvREFCNT_dec (req->callback);	163	SvREFCNT_dec (req->callback);
241		164
242	errno = errorno;	165	errno = errorno;
243	count++;	166	count++;
244	}	167	}
245		168
		169	prv = req;
		170	req = req->next;
246	Safefree (req);	171	Safefree (prv);
		172
		173	/* TODO: croak on errors? */
247	}	174	}
248		175
249	if (qs)
250	send_reqs ();
251
252	return count;	176	return count;
253	}	177	}
		178
		179	static void aio_proc(void arg);
		180
		181	static void
		182	start_thread (void)
		183	{
		184	sigset_t fullsigset, oldsigset;
		185	pthread_t tid;
		186	pthread_attr_t attr;
		187
		188	pthread_attr_init (&attr);
		189	pthread_attr_setstacksize (&attr, STACKSIZE);
		190	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
		191
		192	sigfillset (&fullsigset);
		193	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
		194
		195	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
		196	started++;
		197
		198	sigprocmask (SIG_SETMASK, &oldsigset, 0);
		199	}
		200
		201	static void
		202	send_req (aio_req req)
		203	{
		204	nreqs++;
		205
		206	pthread_mutex_lock (&reqlock);
		207
		208	req->next = 0;
		209
		210	if (reqe)
		211	{
		212	reqe->next = req;
		213	reqe = req;
		214	}
		215	else
		216	reqe = reqs = req;
		217
		218	pthread_cond_signal (&reqwait);
		219	pthread_mutex_unlock (&reqlock);
		220
		221	while (nreqs > max_outstanding)
		222	{
		223	poll_wait ();
		224	poll_cb ();
		225	}
		226	}
		227
		228	static void
		229	end_thread (void)
		230	{
		231	aio_req req;
		232	New (0, req, 1, aio_cb);
		233	req->type = REQ_QUIT;
		234
		235	send_req (req);
		236	}
		237
		238	/* work around various missing functions */
		239
		240	#if !HAVE_PREADWRITE
		241	# define pread aio_pread
		242	# define pwrite aio_pwrite
		243
		244	/*
		245	* make our pread/pwrite safe against themselves, but not against
		246	* normal read/write by using a mutex. slows down execution a lot,
		247	* but that's your problem, not mine.
		248	*/
		249	static pthread_mutex_t iolock = PTHREAD_MUTEX_INITIALIZER;
		250
		251	static ssize_t
		252	pread (int fd, void *buf, size_t count, off_t offset)
		253	{
		254	ssize_t res;
		255	off_t ooffset;
		256
		257	pthread_mutex_lock (&iolock);
		258	ooffset = lseek (fd, 0, SEEK_CUR);
		259	lseek (fd, offset, SEEK_SET);
		260	res = read (fd, buf, count);
		261	lseek (fd, ooffset, SEEK_SET);
		262	pthread_mutex_unlock (&iolock);
		263
		264	return res;
		265	}
		266
		267	static ssize_t
		268	pwrite (int fd, void *buf, size_t count, off_t offset)
		269	{
		270	ssize_t res;
		271	off_t ooffset;
		272
		273	pthread_mutex_lock (&iolock);
		274	ooffset = lseek (fd, 0, SEEK_CUR);
		275	lseek (fd, offset, SEEK_SET);
		276	res = write (fd, buf, count);
		277	lseek (fd, offset, SEEK_SET);
		278	pthread_mutex_unlock (&iolock);
		279
		280	return res;
		281	}
		282	#endif
		283
		284	#if !HAVE_FDATASYNC
		285	# define fdatasync fsync
		286	#endif
		287
		288	#if !HAVE_READAHEAD
		289	# define readahead aio_readahead
		290
		291	static char readahead_buf[4096];
		292
		293	static ssize_t
		294	readahead (int fd, off_t offset, size_t count)
		295	{
		296	while (count > 0)
		297	{
		298	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
		299
		300	pread (fd, readahead_buf, len, offset);
		301	offset += len;
		302	count -= len;
		303	}
		304
		305	errno = 0;
		306	}
		307	#endif
254		308
255	static void *	309	static void *
256	aio_proc (void *thr_arg)	310	aio_proc (void *thr_arg)
257	{	311	{
258	aio_req req;	312	aio_req req;
		313	int type;
259		314
260	/* then loop */	315	do
261	while (read (reqpipe[0], (void *)&req, sizeof (req)) == sizeof (req))
262	{	316	{
		317	pthread_mutex_lock (&reqlock);
		318
		319	for (;;)
		320	{
		321	req = reqs;
		322
		323	if (reqs)
		324	{
		325	reqs = reqs->next;
		326	if (!reqs) reqe = 0;
		327	}
		328
		329	if (req)
		330	break;
		331
		332	pthread_cond_wait (&reqwait, &reqlock);
		333	}
		334
		335	pthread_mutex_unlock (&reqlock);
		336
263	errno = 0; /* strictly unnecessary */	337	errno = 0; /* strictly unnecessary */
264		338
		339	type = req->type;
		340
265	switch (req->type)	341	switch (type)
266	{	342	{
267	case REQ_READ: req->result = pread64 (req->fd, req->dataptr, req->length, req->offset); break;	343	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
268	case REQ_WRITE: req->result = pwrite64 (req->fd, req->dataptr, req->length, req->offset); break;	344	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
269	#if SYS_readahead	345
270	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	346	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
271	#else
272	case REQ_READAHEAD: req->result = -1; errno = ENOSYS; break;
273	#endif
274		347
275	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	348	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
276	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	349	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
277	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	350	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
278		351
279	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;	352	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
280	case REQ_CLOSE: req->result = close (req->fd); break;	353	case REQ_CLOSE: req->result = close (req->fd); break;
281	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	354	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
282		355
		356	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
283	case REQ_FSYNC: req->result = fsync (req->fd); break;	357	case REQ_FSYNC: req->result = fsync (req->fd); break;
284	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
285		358
286	case REQ_QUIT:	359	case REQ_QUIT:
287	write (respipe[1], (void *)&req, sizeof (req));	360	break;
288	return 0;
289		361
290	default:	362	default:
291	req->result = ENOSYS;	363	req->result = ENOSYS;
292	break;	364	break;
293	}	365	}
294		366
295	req->errorno = errno;	367	req->errorno = errno;
296	write (respipe[1], (void *)&req, sizeof (req));	368
		369	pthread_mutex_lock (&reslock);
		370
		371	req->next = 0;
		372
		373	if (rese)
		374	{
		375	rese->next = req;
		376	rese = req;
		377	}
		378	else
		379	{
		380	rese = ress = req;
		381
		382	/* write a dummy byte to the pipe so fh becomes ready */
		383	write (respipe [1], &respipe, 1);
		384	}
		385
		386	pthread_mutex_unlock (&reslock);
297	}	387	}
		388	while (type != REQ_QUIT);
298		389
299	return 0;	390	return 0;
300	}	391	}
301		392
302	MODULE = IO::AIO PACKAGE = IO::AIO	393	MODULE = IO::AIO PACKAGE = IO::AIO
303		394
		395	PROTOTYPES: ENABLE
		396
304	BOOT:	397	BOOT:
305	{	398	{
306	if (pipe (reqpipe) \|\| pipe (respipe))	399	if (pipe (respipe))
307	croak ("unable to initialize request or result pipe");	400	croak ("unable to initialize result pipe");
308		401
309	if (fcntl (reqpipe[1], F_SETFL, O_NONBLOCK))	402	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
310	croak ("cannot set result pipe to nonblocking mode");	403	croak ("cannot set result pipe to nonblocking mode");
311		404
312	if (fcntl (respipe[0], F_SETFL, O_NONBLOCK))	405	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
313	croak ("cannot set result pipe to nonblocking mode");	406	croak ("cannot set result pipe to nonblocking mode");
314	}	407	}
315		408
316	void	409	void
317	min_parallel(nthreads)	410	min_parallel(nthreads)
…		…
335	}	428	}
336		429
337	while (started > nthreads)	430	while (started > nthreads)
338	{	431	{
339	poll_wait ();	432	poll_wait ();
340	poll_cb (aTHX);	433	poll_cb ();
341	}	434	}
342	}	435	}
343		436
		437	int
		438	max_outstanding(nreqs)
		439	int nreqs
		440	PROTOTYPE: $
		441	CODE:
		442	RETVAL = max_outstanding;
		443	max_outstanding = nreqs;
		444
344	void	445	void
345	aio_open(pathname,flags,mode,callback)	446	aio_open(pathname,flags,mode,callback=&PL_sv_undef)
346	SV * pathname	447	SV * pathname
347	int flags	448	int flags
348	int mode	449	int mode
349	SV * callback	450	SV * callback
350	PROTOTYPE: $$$$	451	PROTOTYPE: $$$;$
351	CODE:	452	CODE:
352	{	453	{
353	aio_req req;	454	aio_req req;
354		455
355	Newz (0, req, 1, aio_cb);	456	Newz (0, req, 1, aio_cb);
…		…
366		467
367	send_req (req);	468	send_req (req);
368	}	469	}
369		470
370	void	471	void
371	aio_close(fh,callback)	472	aio_close(fh,callback=&PL_sv_undef)
372	InputStream fh	473	SV * fh
373	SV * callback	474	SV * callback
374	PROTOTYPE: $$	475	PROTOTYPE: $;$
375	ALIAS:	476	ALIAS:
376	aio_close = REQ_CLOSE	477	aio_close = REQ_CLOSE
377	aio_fsync = REQ_FSYNC	478	aio_fsync = REQ_FSYNC
378	aio_fdatasync = REQ_FDATASYNC	479	aio_fdatasync = REQ_FDATASYNC
379	CODE:	480	CODE:
…		…
384		485
385	if (!req)	486	if (!req)
386	croak ("out of memory during aio_req allocation");	487	croak ("out of memory during aio_req allocation");
387		488
388	req->type = ix;	489	req->type = ix;
		490	req->fh = newSVsv (fh);
389	req->fd = PerlIO_fileno (fh);	491	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
390	req->callback = SvREFCNT_inc (callback);	492	req->callback = SvREFCNT_inc (callback);
391		493
392	send_req (req);	494	send_req (req);
393	}	495	}
394		496
395	void	497	void
396	aio_read(fh,offset,length,data,dataoffset,callback)	498	aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
397	InputStream fh	499	SV * fh
398	UV offset	500	UV offset
399	IV length	501	IV length
400	SV * data	502	SV * data
401	IV dataoffset	503	IV dataoffset
402	SV * callback	504	SV * callback
		505	ALIAS:
		506	aio_read = REQ_READ
		507	aio_write = REQ_WRITE
403	PROTOTYPE: $$$$$$	508	PROTOTYPE: $$$$$;$
404	CODE:	509	CODE:
405	read_write (aTHX_ 0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
406
407	void
408	aio_write(fh,offset,length,data,dataoffset,callback)
409	OutputStream fh
410	UV offset
411	IV length
412	SV * data
413	IV dataoffset
414	SV * callback
415	PROTOTYPE: $$$$$$
416	CODE:
417	read_write (aTHX_ 1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
418
419	void
420	aio_readahead(fh,offset,length,callback)
421	InputStream fh
422	UV offset
423	IV length
424	SV * callback
425	PROTOTYPE: $$$$
426	CODE:
427	{	510	{
428	aio_req req;	511	aio_req req;
		512	STRLEN svlen;
		513	char *svptr = SvPVbyte (data, svlen);
		514
		515	SvUPGRADE (data, SVt_PV);
		516	SvPOK_on (data);
		517
		518	if (dataoffset < 0)
		519	dataoffset += svlen;
		520
		521	if (dataoffset < 0 \|\| dataoffset > svlen)
		522	croak ("data offset outside of string");
		523
		524	if (ix == REQ_WRITE)
		525	{
		526	/* write: check length and adjust. */
		527	if (length < 0 \|\| length + dataoffset > svlen)
		528	length = svlen - dataoffset;
		529	}
		530	else
		531	{
		532	/* read: grow scalar as necessary */
		533	svptr = SvGROW (data, length + dataoffset);
		534	}
429		535
430	if (length < 0)	536	if (length < 0)
431	croak ("length must not be negative");	537	croak ("length must not be negative");
432		538
433	Newz (0, req, 1, aio_cb);	539	Newz (0, req, 1, aio_cb);
434		540
435	if (!req)	541	if (!req)
436	croak ("out of memory during aio_req allocation");	542	croak ("out of memory during aio_req allocation");
437		543
		544	req->type = ix;
		545	req->fh = newSVsv (fh);
		546	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
		547	: IoOFP (sv_2io (fh)));
		548	req->offset = offset;
		549	req->length = length;
		550	req->data = SvREFCNT_inc (data);
		551	req->dataptr = (char *)svptr + dataoffset;
		552	req->callback = SvREFCNT_inc (callback);
		553
		554	send_req (req);
		555	}
		556
		557	void
		558	aio_readahead(fh,offset,length,callback=&PL_sv_undef)
		559	SV * fh
		560	UV offset
		561	IV length
		562	SV * callback
		563	PROTOTYPE: $$$;$
		564	CODE:
		565	{
		566	aio_req req;
		567
		568	if (length < 0)
		569	croak ("length must not be negative");
		570
		571	Newz (0, req, 1, aio_cb);
		572
		573	if (!req)
		574	croak ("out of memory during aio_req allocation");
		575
438	req->type = REQ_READAHEAD;	576	req->type = REQ_READAHEAD;
		577	req->fh = newSVsv (fh);
439	req->fd = PerlIO_fileno (fh);	578	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
440	req->offset = offset;	579	req->offset = offset;
441	req->length = length;	580	req->length = length;
442	req->callback = SvREFCNT_inc (callback);	581	req->callback = SvREFCNT_inc (callback);
443		582
444	send_req (req);	583	send_req (req);
445	}	584	}
446		585
447	void	586	void
448	aio_stat(fh_or_path,callback)	587	aio_stat(fh_or_path,callback=&PL_sv_undef)
449	SV * fh_or_path	588	SV * fh_or_path
450	SV * callback	589	SV * callback
451	PROTOTYPE: $$
452	ALIAS:	590	ALIAS:
		591	aio_stat = REQ_STAT
453	aio_lstat = 1	592	aio_lstat = REQ_LSTAT
454	CODE:	593	CODE:
455	{	594	{
456	aio_req req;	595	aio_req req;
457		596
458	Newz (0, req, 1, aio_cb);	597	Newz (0, req, 1, aio_cb);
…		…
465	if (!req->statdata)	604	if (!req->statdata)
466	croak ("out of memory during aio_req->statdata allocation");	605	croak ("out of memory during aio_req->statdata allocation");
467		606
468	if (SvPOK (fh_or_path))	607	if (SvPOK (fh_or_path))
469	{	608	{
470	req->type = ix ? REQ_LSTAT : REQ_STAT;	609	req->type = ix;
471	req->data = newSVsv (fh_or_path);	610	req->data = newSVsv (fh_or_path);
472	req->dataptr = SvPV_nolen (req->data);	611	req->dataptr = SvPV_nolen (req->data);
473	}	612	}
474	else	613	else
475	{	614	{
476	req->type = REQ_FSTAT;	615	req->type = REQ_FSTAT;
		616	req->fh = newSVsv (fh_or_path);
477	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	617	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
478	}	618	}
479		619
480	req->callback = SvREFCNT_inc (callback);	620	req->callback = SvREFCNT_inc (callback);
481		621
482	send_req (req);	622	send_req (req);
483	}	623	}
484		624
485	void	625	void
486	aio_unlink(pathname,callback)	626	aio_unlink(pathname,callback=&PL_sv_undef)
487	SV * pathname	627	SV * pathname
488	SV * callback	628	SV * callback
489	PROTOTYPE: $$
490	CODE:	629	CODE:
491	{	630	{
492	aio_req req;	631	aio_req req;
493		632
494	Newz (0, req, 1, aio_cb);	633	Newz (0, req, 1, aio_cb);
…		…
502	req->callback = SvREFCNT_inc (callback);	641	req->callback = SvREFCNT_inc (callback);
503		642
504	send_req (req);	643	send_req (req);
505	}	644	}
506		645
		646	void
		647	flush()
		648	PROTOTYPE:
		649	CODE:
		650	while (nreqs)
		651	{
		652	poll_wait ();
		653	poll_cb ();
		654	}
		655
		656	void
		657	poll()
		658	PROTOTYPE:
		659	CODE:
		660	if (nreqs)
		661	{
		662	poll_wait ();
		663	poll_cb ();
		664	}
		665
507	int	666	int
508	poll_fileno()	667	poll_fileno()
509	PROTOTYPE:	668	PROTOTYPE:
510	CODE:	669	CODE:
511	RETVAL = respipe[0];	670	RETVAL = respipe [0];
512	OUTPUT:	671	OUTPUT:
513	RETVAL	672	RETVAL
514		673
515	int	674	int
516	poll_cb(...)	675	poll_cb(...)
517	PROTOTYPE:	676	PROTOTYPE:
518	CODE:	677	CODE:
519	RETVAL = poll_cb (aTHX);	678	RETVAL = poll_cb ();
520	OUTPUT:	679	OUTPUT:
521	RETVAL	680	RETVAL
522		681
523	void	682	void
524	poll_wait()	683	poll_wait()
525	PROTOTYPE:	684	PROTOTYPE:
526	CODE:	685	CODE:
		686	if (nreqs)
527	poll_wait ();	687	poll_wait ();
528		688
529	int	689	int
530	nreqs()	690	nreqs()
531	PROTOTYPE:	691	PROTOTYPE:
532	CODE:	692	CODE:

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Comparing IO-AIO/AIO.xs (file contents): Revision 1.2 by root, Sun Jul 10 18:16:49 2005 UTC vs. Revision 1.21 by root, Sun Aug 7 03:26:10 2005 UTC

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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.2 by root, Sun Jul 10 18:16:49 2005 UTC vs.
Revision 1.21 by root, Sun Aug 7 03:26:10 2005 UTC