[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 1.18 by root, Sun Jul 31 19:00:31 2005 UTC

…		…
1	#define PERL_NO_GET_CONTEXT
2
3	#include "EXTERN.h"	1	#include "EXTERN.h"
4	#include "perl.h"	2	#include "perl.h"
5	#include "XSUB.h"	3	#include "XSUB.h"
6		4
		5	#include "autoconf/config.h"
		6
7	#include <sys/types.h>	7	#include <sys/types.h>
8	#include <sys/stat.h>	8	#include <sys/stat.h>
		9
9	#include <unistd.h>	10	#include <unistd.h>
10	#include <fcntl.h>	11	#include <fcntl.h>
11	#include <signal.h>	12	#include <signal.h>
12	#include <sched.h>	13	#include <sched.h>
		14
		15	#ifndef _REENTRANT
		16	# define _REENTRANT 1
		17	#endif
13	#include <endian.h>	18	#include <errno.h>
14		19
15	#include <pthread.h>	20	#include <pthread.h>
16	#include <sys/syscall.h>
17		21
18	typedef void InputStream; / hack, but 5.6.1 is simply toooo old ;) */	22	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 ;) */	23	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 ;) */	24	typedef void InOutStream; / hack, but 5.6.1 is simply toooo old ;) */
21		25
22	#if __i386 \|\| __amd64
23	# define STACKSIZE ( 256 * sizeof (long))
24	#elif __ia64	26	#if __ia64
25	# define STACKSIZE (8192 * sizeof (long))	27	# define STACKSIZE 65536
26	#else	28	#else
27	# define STACKSIZE ( 512 * sizeof (long))	29	# define STACKSIZE 4096
28	#endif	30	#endif
29		31
30	enum {	32	enum {
31	REQ_QUIT,	33	REQ_QUIT,
32	REQ_OPEN, REQ_CLOSE,	34	REQ_OPEN, REQ_CLOSE,
34	REQ_STAT, REQ_LSTAT, REQ_FSTAT, REQ_UNLINK,	36	REQ_STAT, REQ_LSTAT, REQ_FSTAT, REQ_UNLINK,
35	REQ_FSYNC, REQ_FDATASYNC,	37	REQ_FSYNC, REQ_FDATASYNC,
36	};	38	};
37		39
38	typedef struct aio_cb {	40	typedef struct aio_cb {
39	struct aio_cb *next;	41	struct aio_cb *volatile next;
40		42
41	int type;	43	int type;
42		44
43	int fd;	45	int fd;
44	off_t offset;	46	off_t offset;
45	size_t length;	47	size_t length;
46	ssize_t result;	48	ssize_t result;
47	mode_t mode; /* open */	49	mode_t mode; /* open */
48	int errorno;	50	int errorno;
49	SV data, callback;	51	SV data, callback, *fh;
50	void *dataptr;	52	void *dataptr;
51	STRLEN dataoffset;	53	STRLEN dataoffset;
52		54
53	Stat_t *statdata;	55	Stat_t *statdata;
54	} aio_cb;	56	} aio_cb;
55		57
56	typedef aio_cb *aio_req;	58	typedef aio_cb *aio_req;
57		59
58	static int started;	60	static int started;
59	static int nreqs;	61	static volatile int nreqs;
		62	static int max_outstanding = 1<<30;
60	static int reqpipe[2], respipe[2];	63	static int respipe [2];
61		64
		65	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;
		66	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
		67	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
		68
62	static aio_req qs, qe; /* queue start, queue end */	69	static volatile aio_req reqs, reqe; /* queue start, queue end */
63		70	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		71
173	static void	72	static void
174	poll_wait ()	73	poll_wait ()
175	{	74	{
		75	if (nreqs && !ress)
		76	{
176	fd_set rfd;	77	fd_set rfd;
177	FD_ZERO(&rfd);	78	FD_ZERO(&rfd);
178	FD_SET(respipe[0], &rfd);	79	FD_SET(respipe [0], &rfd);
179		80
180	select (respipe[0] + 1, &rfd, 0, 0, 0);	81	select (respipe [0] + 1, &rfd, 0, 0, 0);
		82	}
181	}	83	}
182		84
183	static int	85	static int
184	poll_cb (pTHX)	86	poll_cb ()
185	{	87	{
186	dSP;	88	dSP;
187	int count = 0;	89	int count = 0;
188	aio_req req;	90	aio_req req, prv;
189		91
190	while (read (respipe[0], (void *)&req, sizeof (req)) == sizeof (req))	92	pthread_mutex_lock (&reslock);
		93
		94	{
		95	/* read any signals sent by the worker threads */
		96	char buf [32];
		97	while (read (respipe [0], buf, 32) > 0)
		98	;
		99	}
		100
		101	req = ress;
		102	ress = rese = 0;
		103
		104	pthread_mutex_unlock (&reslock);
		105
		106	while (req)
191	{	107	{
192	nreqs--;	108	nreqs--;
193		109
194	if (req->type == REQ_QUIT)	110	if (req->type == REQ_QUIT)
195	started--;	111	started--;
…		…
203	+ req->result > 0 ? req->result : 0);	119	+ req->result > 0 ? req->result : 0);
204		120
205	if (req->data)	121	if (req->data)
206	SvREFCNT_dec (req->data);	122	SvREFCNT_dec (req->data);
207		123
		124	if (req->fh)
		125	SvREFCNT_dec (req->fh);
		126
208	if (req->type == REQ_STAT \|\| req->type == REQ_LSTAT \|\| req->type == REQ_FSTAT)	127	if (req->type == REQ_STAT \|\| req->type == REQ_LSTAT \|\| req->type == REQ_FSTAT)
209	{	128	{
210	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	129	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
211	PL_laststatval = req->result;	130	PL_laststatval = req->result;
212	PL_statcache = *(req->statdata);	131	PL_statcache = *(req->statdata);
213		132
214	Safefree (req->statdata);	133	Safefree (req->statdata);
215	}	134	}
216		135
		136	ENTER;
217	PUSHMARK (SP);	137	PUSHMARK (SP);
218	XPUSHs (sv_2mortal (newSViv (req->result)));	138	XPUSHs (sv_2mortal (newSViv (req->result)));
219		139
220	if (req->type == REQ_OPEN)	140	if (req->type == REQ_OPEN)
221	{	141	{
…		…
224		144
225	PUTBACK;	145	PUTBACK;
226	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);	146	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);
227	SPAGAIN;	147	SPAGAIN;
228		148
229	fh = POPs;	149	fh = SvREFCNT_inc (POPs);
230		150
231	PUSHMARK (SP);	151	PUSHMARK (SP);
232	XPUSHs (fh);	152	XPUSHs (sv_2mortal (fh));
233	}	153	}
234		154
		155	if (SvOK (req->callback))
		156	{
235	PUTBACK;	157	PUTBACK;
236	call_sv (req->callback, G_VOID \| G_EVAL);	158	call_sv (req->callback, G_VOID \| G_EVAL);
237	SPAGAIN;	159	SPAGAIN;
		160	}
		161
		162	LEAVE;
238		163
239	if (req->callback)	164	if (req->callback)
240	SvREFCNT_dec (req->callback);	165	SvREFCNT_dec (req->callback);
241		166
242	errno = errorno;	167	errno = errorno;
243	count++;	168	count++;
244	}	169	}
245		170
		171	prv = req;
		172	req = req->next;
246	Safefree (req);	173	Safefree (prv);
		174
		175	/* TODO: croak on errors? */
247	}	176	}
248		177
249	if (qs)
250	send_reqs ();
251
252	return count;	178	return count;
253	}	179	}
		180
		181	static void aio_proc(void arg);
		182
		183	static void
		184	start_thread (void)
		185	{
		186	sigset_t fullsigset, oldsigset;
		187	pthread_t tid;
		188	pthread_attr_t attr;
		189
		190	pthread_attr_init (&attr);
		191	pthread_attr_setstacksize (&attr, STACKSIZE);
		192	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
		193
		194	sigfillset (&fullsigset);
		195	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
		196
		197	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
		198	started++;
		199
		200	sigprocmask (SIG_SETMASK, &oldsigset, 0);
		201	}
		202
		203	static void
		204	send_req (aio_req req)
		205	{
		206	nreqs++;
		207
		208	pthread_mutex_lock (&reqlock);
		209
		210	req->next = 0;
		211
		212	if (reqe)
		213	{
		214	reqe->next = req;
		215	reqe = req;
		216	}
		217	else
		218	reqe = reqs = req;
		219
		220	pthread_cond_signal (&reqwait);
		221	pthread_mutex_unlock (&reqlock);
		222
		223	while (nreqs > max_outstanding)
		224	{
		225	poll_wait ();
		226	poll_cb ();
		227	}
		228	}
		229
		230	static void
		231	end_thread (void)
		232	{
		233	aio_req req;
		234	New (0, req, 1, aio_cb);
		235	req->type = REQ_QUIT;
		236
		237	send_req (req);
		238	}
		239
		240	/* work around various missing functions */
		241
		242	#if !HAVE_PREADWRITE
		243	# define pread aio_pread
		244	# define pwrite aio_pwrite
		245
		246	/*
		247	* make our pread/pwrite safe against themselves, but not against
		248	* normal read/write by using a mutex. slows down execution a lot,
		249	* but that's your problem, not mine.
		250	*/
		251	static pthread_mutex_t iolock = PTHREAD_MUTEX_INITIALIZER;
		252
		253	static ssize_t
		254	pread (int fd, void *buf, size_t count, off_t offset)
		255	{
		256	ssize_t res;
		257	off_t ooffset;
		258
		259	pthread_mutex_lock (&iolock);
		260	ooffset = lseek (fd, 0, SEEK_CUR);
		261	lseek (fd, offset, SEEK_SET);
		262	res = read (fd, buf, count);
		263	lseek (fd, ooffset, SEEK_SET);
		264	pthread_mutex_unlock (&iolock);
		265
		266	return res;
		267	}
		268
		269	static ssize_t
		270	pwrite (int fd, void *buf, size_t count, off_t offset)
		271	{
		272	ssize_t res;
		273	off_t ooffset;
		274
		275	pthread_mutex_lock (&iolock);
		276	ooffset = lseek (fd, 0, SEEK_CUR);
		277	lseek (fd, offset, SEEK_SET);
		278	res = write (fd, buf, count);
		279	lseek (fd, offset, SEEK_SET);
		280	pthread_mutex_unlock (&iolock);
		281
		282	return res;
		283	}
		284	#endif
		285
		286	#if !HAVE_FDATASYNC
		287	# define fdatasync fsync
		288	#endif
		289
		290	#if !HAVE_READAHEAD
		291	# define readahead aio_readahead
		292
		293	static char readahead_buf[4096];
		294
		295	static ssize_t
		296	readahead (int fd, off_t offset, size_t count)
		297	{
		298	while (count > 0)
		299	{
		300	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
		301
		302	pread (fd, readahead_buf, len, offset);
		303	offset += len;
		304	count -= len;
		305	}
		306
		307	errno = 0;
		308	}
		309	#endif
254		310
255	static void *	311	static void *
256	aio_proc (void *thr_arg)	312	aio_proc (void *thr_arg)
257	{	313	{
258	aio_req req;	314	aio_req req;
		315	int type;
259		316
260	/* then loop */	317	do
261	while (read (reqpipe[0], (void *)&req, sizeof (req)) == sizeof (req))
262	{	318	{
		319	pthread_mutex_lock (&reqlock);
		320
		321	for (;;)
		322	{
		323	req = reqs;
		324
		325	if (reqs)
		326	{
		327	reqs = reqs->next;
		328	if (!reqs) reqe = 0;
		329	}
		330
		331	if (req)
		332	break;
		333
		334	pthread_cond_wait (&reqwait, &reqlock);
		335	}
		336
		337	pthread_mutex_unlock (&reqlock);
		338
263	errno = 0; /* strictly unnecessary */	339	errno = 0; /* strictly unnecessary */
264		340
		341	type = req->type;
		342
265	switch (req->type)	343	switch (type)
266	{	344	{
267	case REQ_READ: req->result = pread64 (req->fd, req->dataptr, req->length, req->offset); break;	345	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;	346	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
269	#if SYS_readahead	347
270	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	348	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		349
275	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	350	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
276	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	351	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
277	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	352	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
278		353
279	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;	354	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
280	case REQ_CLOSE: req->result = close (req->fd); break;	355	case REQ_CLOSE: req->result = close (req->fd); break;
281	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	356	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
282		357
		358	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
283	case REQ_FSYNC: req->result = fsync (req->fd); break;	359	case REQ_FSYNC: req->result = fsync (req->fd); break;
284	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
285		360
286	case REQ_QUIT:	361	case REQ_QUIT:
287	write (respipe[1], (void *)&req, sizeof (req));	362	break;
288	return 0;
289		363
290	default:	364	default:
291	req->result = ENOSYS;	365	req->result = ENOSYS;
292	break;	366	break;
293	}	367	}
294		368
295	req->errorno = errno;	369	req->errorno = errno;
296	write (respipe[1], (void *)&req, sizeof (req));	370
		371	pthread_mutex_lock (&reslock);
		372
		373	req->next = 0;
		374
		375	if (rese)
		376	{
		377	rese->next = req;
		378	rese = req;
		379	}
		380	else
		381	{
		382	rese = ress = req;
		383
		384	/* write a dummy byte to the pipe so fh becomes ready */
		385	write (respipe [1], &respipe, 1);
		386	}
		387
		388	pthread_mutex_unlock (&reslock);
297	}	389	}
		390	while (type != REQ_QUIT);
298		391
299	return 0;	392	return 0;
300	}	393	}
301		394
302	MODULE = IO::AIO PACKAGE = IO::AIO	395	MODULE = IO::AIO PACKAGE = IO::AIO
303		396
		397	PROTOTYPES: ENABLE
		398
304	BOOT:	399	BOOT:
305	{	400	{
306	if (pipe (reqpipe) \|\| pipe (respipe))	401	if (pipe (respipe))
307	croak ("unable to initialize request or result pipe");	402	croak ("unable to initialize result pipe");
308		403
309	if (fcntl (reqpipe[1], F_SETFL, O_NONBLOCK))	404	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
310	croak ("cannot set result pipe to nonblocking mode");	405	croak ("cannot set result pipe to nonblocking mode");
311		406
312	if (fcntl (respipe[0], F_SETFL, O_NONBLOCK))	407	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
313	croak ("cannot set result pipe to nonblocking mode");	408	croak ("cannot set result pipe to nonblocking mode");
314	}	409	}
315		410
316	void	411	void
317	min_parallel(nthreads)	412	min_parallel(nthreads)
…		…
335	}	430	}
336		431
337	while (started > nthreads)	432	while (started > nthreads)
338	{	433	{
339	poll_wait ();	434	poll_wait ();
340	poll_cb (aTHX);	435	poll_cb ();
341	}	436	}
342	}	437	}
343		438
		439	int
		440	max_outstanding(nreqs)
		441	int nreqs
		442	PROTOTYPE: $
		443	CODE:
		444	RETVAL = max_outstanding;
		445	max_outstanding = nreqs;
		446
344	void	447	void
345	aio_open(pathname,flags,mode,callback)	448	aio_open(pathname,flags,mode,callback=&PL_sv_undef)
346	SV * pathname	449	SV * pathname
347	int flags	450	int flags
348	int mode	451	int mode
349	SV * callback	452	SV * callback
350	PROTOTYPE: $$$$	453	PROTOTYPE: $$$;$
351	CODE:	454	CODE:
352	{	455	{
353	aio_req req;	456	aio_req req;
354		457
355	Newz (0, req, 1, aio_cb);	458	Newz (0, req, 1, aio_cb);
…		…
366		469
367	send_req (req);	470	send_req (req);
368	}	471	}
369		472
370	void	473	void
371	aio_close(fh,callback)	474	aio_close(fh,callback=&PL_sv_undef)
372	InputStream fh	475	SV * fh
373	SV * callback	476	SV * callback
374	PROTOTYPE: $$	477	PROTOTYPE: $;$
375	ALIAS:	478	ALIAS:
376	aio_close = REQ_CLOSE	479	aio_close = REQ_CLOSE
377	aio_fsync = REQ_FSYNC	480	aio_fsync = REQ_FSYNC
378	aio_fdatasync = REQ_FDATASYNC	481	aio_fdatasync = REQ_FDATASYNC
379	CODE:	482	CODE:
…		…
384		487
385	if (!req)	488	if (!req)
386	croak ("out of memory during aio_req allocation");	489	croak ("out of memory during aio_req allocation");
387		490
388	req->type = ix;	491	req->type = ix;
		492	req->fh = newSVsv (fh);
389	req->fd = PerlIO_fileno (fh);	493	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
390	req->callback = SvREFCNT_inc (callback);	494	req->callback = SvREFCNT_inc (callback);
391		495
392	send_req (req);	496	send_req (req);
393	}	497	}
394		498
395	void	499	void
396	aio_read(fh,offset,length,data,dataoffset,callback)	500	aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
397	InputStream fh	501	SV * fh
398	UV offset	502	UV offset
399	IV length	503	IV length
400	SV * data	504	SV * data
401	IV dataoffset	505	IV dataoffset
402	SV * callback	506	SV * callback
		507	ALIAS:
		508	aio_read = REQ_READ
		509	aio_write = REQ_WRITE
403	PROTOTYPE: $$$$$$	510	PROTOTYPE: $$$$$;$
404	CODE:	511	CODE:
405	read_write (aTHX_ 0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
406
407	void
408	aio_write(fh,offset,length,data,dataoffset,callback)
409	OutputStream fh
410	UV offset
411	IV length
412	SV * data
413	IV dataoffset
414	SV * callback
415	PROTOTYPE: $$$$$$
416	CODE:
417	read_write (aTHX_ 1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
418
419	void
420	aio_readahead(fh,offset,length,callback)
421	InputStream fh
422	UV offset
423	IV length
424	SV * callback
425	PROTOTYPE: $$$$
426	CODE:
427	{	512	{
428	aio_req req;	513	aio_req req;
		514	STRLEN svlen;
		515	char *svptr = SvPV (data, svlen);
		516
		517	SvUPGRADE (data, SVt_PV);
		518	SvPOK_on (data);
		519
		520	if (dataoffset < 0)
		521	dataoffset += svlen;
		522
		523	if (dataoffset < 0 \|\| dataoffset > svlen)
		524	croak ("data offset outside of string");
		525
		526	if (ix == REQ_WRITE)
		527	{
		528	/* write: check length and adjust. */
		529	if (length < 0 \|\| length + dataoffset > svlen)
		530	length = svlen - dataoffset;
		531	}
		532	else
		533	{
		534	/* read: grow scalar as necessary */
		535	svptr = SvGROW (data, length + dataoffset);
		536	}
429		537
430	if (length < 0)	538	if (length < 0)
431	croak ("length must not be negative");	539	croak ("length must not be negative");
432		540
433	Newz (0, req, 1, aio_cb);	541	Newz (0, req, 1, aio_cb);
434		542
435	if (!req)	543	if (!req)
436	croak ("out of memory during aio_req allocation");	544	croak ("out of memory during aio_req allocation");
437		545
		546	req->type = ix;
		547	req->fh = newSVsv (fh);
		548	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
		549	: IoOFP (sv_2io (fh)));
		550	req->offset = offset;
		551	req->length = length;
		552	req->data = SvREFCNT_inc (data);
		553	req->dataptr = (char *)svptr + dataoffset;
		554	req->callback = SvREFCNT_inc (callback);
		555
		556	send_req (req);
		557	}
		558
		559	void
		560	aio_readahead(fh,offset,length,callback=&PL_sv_undef)
		561	SV * fh
		562	UV offset
		563	IV length
		564	SV * callback
		565	PROTOTYPE: $$$;$
		566	CODE:
		567	{
		568	aio_req req;
		569
		570	if (length < 0)
		571	croak ("length must not be negative");
		572
		573	Newz (0, req, 1, aio_cb);
		574
		575	if (!req)
		576	croak ("out of memory during aio_req allocation");
		577
438	req->type = REQ_READAHEAD;	578	req->type = REQ_READAHEAD;
		579	req->fh = newSVsv (fh);
439	req->fd = PerlIO_fileno (fh);	580	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
440	req->offset = offset;	581	req->offset = offset;
441	req->length = length;	582	req->length = length;
442	req->callback = SvREFCNT_inc (callback);	583	req->callback = SvREFCNT_inc (callback);
443		584
444	send_req (req);	585	send_req (req);
445	}	586	}
446		587
447	void	588	void
448	aio_stat(fh_or_path,callback)	589	aio_stat(fh_or_path,callback=&PL_sv_undef)
449	SV * fh_or_path	590	SV * fh_or_path
450	SV * callback	591	SV * callback
451	PROTOTYPE: $$
452	ALIAS:	592	ALIAS:
		593	aio_stat = REQ_STAT
453	aio_lstat = 1	594	aio_lstat = REQ_LSTAT
454	CODE:	595	CODE:
455	{	596	{
456	aio_req req;	597	aio_req req;
457		598
458	Newz (0, req, 1, aio_cb);	599	Newz (0, req, 1, aio_cb);
…		…
465	if (!req->statdata)	606	if (!req->statdata)
466	croak ("out of memory during aio_req->statdata allocation");	607	croak ("out of memory during aio_req->statdata allocation");
467		608
468	if (SvPOK (fh_or_path))	609	if (SvPOK (fh_or_path))
469	{	610	{
470	req->type = ix ? REQ_LSTAT : REQ_STAT;	611	req->type = ix;
471	req->data = newSVsv (fh_or_path);	612	req->data = newSVsv (fh_or_path);
472	req->dataptr = SvPV_nolen (req->data);	613	req->dataptr = SvPV_nolen (req->data);
473	}	614	}
474	else	615	else
475	{	616	{
476	req->type = REQ_FSTAT;	617	req->type = REQ_FSTAT;
		618	req->fh = newSVsv (fh_or_path);
477	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	619	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
478	}	620	}
479		621
480	req->callback = SvREFCNT_inc (callback);	622	req->callback = SvREFCNT_inc (callback);
481		623
482	send_req (req);	624	send_req (req);
483	}	625	}
484		626
485	void	627	void
486	aio_unlink(pathname,callback)	628	aio_unlink(pathname,callback=&PL_sv_undef)
487	SV * pathname	629	SV * pathname
488	SV * callback	630	SV * callback
489	PROTOTYPE: $$
490	CODE:	631	CODE:
491	{	632	{
492	aio_req req;	633	aio_req req;
493		634
494	Newz (0, req, 1, aio_cb);	635	Newz (0, req, 1, aio_cb);
…		…
502	req->callback = SvREFCNT_inc (callback);	643	req->callback = SvREFCNT_inc (callback);
503		644
504	send_req (req);	645	send_req (req);
505	}	646	}
506		647
		648	void
		649	flush()
		650	PROTOTYPE:
		651	CODE:
		652	while (nreqs)
		653	{
		654	poll_wait ();
		655	poll_cb ();
		656	}
		657
		658	void
		659	poll()
		660	PROTOTYPE:
		661	CODE:
		662	if (nreqs)
		663	{
		664	poll_wait ();
		665	poll_cb ();
		666	}
		667
507	int	668	int
508	poll_fileno()	669	poll_fileno()
509	PROTOTYPE:	670	PROTOTYPE:
510	CODE:	671	CODE:
511	RETVAL = respipe[0];	672	RETVAL = respipe [0];
512	OUTPUT:	673	OUTPUT:
513	RETVAL	674	RETVAL
514		675
515	int	676	int
516	poll_cb(...)	677	poll_cb(...)
517	PROTOTYPE:	678	PROTOTYPE:
518	CODE:	679	CODE:
519	RETVAL = poll_cb (aTHX);	680	RETVAL = poll_cb ();
520	OUTPUT:	681	OUTPUT:
521	RETVAL	682	RETVAL
522		683
523	void	684	void
524	poll_wait()	685	poll_wait()
525	PROTOTYPE:	686	PROTOTYPE:
526	CODE:	687	CODE:
		688	if (nreqs)
527	poll_wait ();	689	poll_wait ();
528		690
529	int	691	int
530	nreqs()	692	nreqs()
531	PROTOTYPE:	693	PROTOTYPE:
532	CODE:	694	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 1.18 by root, Sun Jul 31 19:00:31 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 1.18 by root, Sun Jul 31 19:00:31 2005 UTC