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

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.1 by root, Sun Jul 10 17:07:44 2005 UTC vs.
Revision 1.27 by root, Wed Aug 17 04:47:02 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,
33	REQ_READ, REQ_WRITE, REQ_READAHEAD,	33	REQ_READ, REQ_WRITE, REQ_READAHEAD,
34	REQ_STAT, REQ_LSTAT, REQ_FSTAT, REQ_UNLINK,	34	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
35	REQ_FSYNC, REQ_FDATASYNC,	35	REQ_FSYNC, REQ_FDATASYNC,
		36	REQ_UNLINK, REQ_RMDIR,
		37	REQ_SYMLINK,
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, data2ptr;
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 */
		70	static volatile aio_req ress, rese; /* queue start, queue end */
63		71
64	static void aio_proc(void arg);	72	static void free_req (aio_req req)
65
66	static void
67	start_thread (void)
68	{	73	{
69	sigset_t fullsigset, oldsigset;	74	if (req->data)
70	pthread_t tid;	75	SvREFCNT_dec (req->data);
71	pthread_attr_t attr;
72		76
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)	77	if (req->fh)
160	croak ("out of memory during aio_req allocation");	78	SvREFCNT_dec (req->fh);
161		79
162	req->type = dowrite ? REQ_WRITE : REQ_READ;	80	if (req->statdata)
163	req->fd = fd;	81	Safefree (req->statdata);
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		82
170	send_req (req);	83	if (req->callback)
		84	SvREFCNT_dec (req->callback);
		85
		86	Safefree (req);
171	}	87	}
172		88
173	static void	89	static void
174	poll_wait ()	90	poll_wait ()
175	{	91	{
		92	if (nreqs && !ress)
		93	{
176	fd_set rfd;	94	fd_set rfd;
177	FD_ZERO(&rfd);	95	FD_ZERO(&rfd);
178	FD_SET(respipe[0], &rfd);	96	FD_SET(respipe [0], &rfd);
179		97
180	select (respipe[0] + 1, &rfd, 0, 0, 0);	98	select (respipe [0] + 1, &rfd, 0, 0, 0);
		99	}
181	}	100	}
182		101
183	static int	102	static int
184	poll_cb (pTHX)	103	poll_cb ()
185	{	104	{
186	dSP;	105	dSP;
187	int count = 0;	106	int count = 0;
		107	int do_croak = 0;
188	aio_req req;	108	aio_req req;
189		109
190	while (read (respipe[0], (void *)&req, sizeof (req)) == sizeof (req))	110	for (;;)
191	{	111	{
		112	pthread_mutex_lock (&reslock);
		113	req = ress;
		114
		115	if (req)
		116	{
		117	ress = req->next;
		118
		119	if (!ress)
		120	{
		121	rese = 0;
		122
		123	/* read any signals sent by the worker threads */
		124	char buf [32];
		125	while (read (respipe [0], buf, 32) == 32)
		126	;
		127	}
		128	}
		129
		130	pthread_mutex_unlock (&reslock);
		131
		132	if (!req)
		133	break;
		134
192	nreqs--;	135	nreqs--;
193		136
194	if (req->type == REQ_QUIT)	137	if (req->type == REQ_QUIT)
195	started--;	138	started--;
196	else	139	else
197	{	140	{
198	int errorno = errno;	141	int errorno = errno;
199	errno = req->errorno;	142	errno = req->errorno;
200		143
201	if (req->type == REQ_READ)	144	if (req->type == REQ_READ)
202	SvCUR_set (req->data, req->dataoffset	145	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
203	+ req->result > 0 ? req->result : 0);
204		146
205	if (req->data)	147	if (req->statdata)
206	SvREFCNT_dec (req->data);
207
208	if (req->type == REQ_STAT \|\| req->type == REQ_LSTAT \|\| req->type == REQ_FSTAT)
209	{	148	{
210	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	149	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
211	PL_laststatval = req->result;	150	PL_laststatval = req->result;
212	PL_statcache = *(req->statdata);	151	PL_statcache = *(req->statdata);
213
214	Safefree (req->statdata);
215	}	152	}
216		153
		154	ENTER;
217	PUSHMARK (SP);	155	PUSHMARK (SP);
218	XPUSHs (sv_2mortal (newSViv (req->result)));	156	XPUSHs (sv_2mortal (newSViv (req->result)));
		157
		158	if (req->type == REQ_OPEN)
		159	{
		160	/* convert fd to fh */
		161	SV *fh;
		162
219	PUTBACK;	163	PUTBACK;
220	call_sv (req->callback, G_VOID);	164	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);
221	SPAGAIN;	165	SPAGAIN;
		166
		167	fh = SvREFCNT_inc (POPs);
		168
		169	PUSHMARK (SP);
		170	XPUSHs (sv_2mortal (fh));
222		171	}
		172
223	if (req->callback)	173	if (SvOK (req->callback))
224	SvREFCNT_dec (req->callback);	174	{
		175	PUTBACK;
		176	call_sv (req->callback, G_VOID \| G_EVAL);
		177	SPAGAIN;
		178
		179	if (SvTRUE (ERRSV))
		180	{
		181	free_req (req);
		182	croak (0);
		183	}
		184	}
		185
		186	LEAVE;
225		187
226	errno = errorno;	188	errno = errorno;
227	count++;	189	count++;
228	}	190	}
229		191
230	Safefree (req);	192	free_req (req);
231	}	193	}
232		194
233	if (qs)
234	send_reqs ();
235
236	return count;	195	return count;
237	}	196	}
		197
		198	static void aio_proc(void arg);
		199
		200	static void
		201	start_thread (void)
		202	{
		203	sigset_t fullsigset, oldsigset;
		204	pthread_t tid;
		205	pthread_attr_t attr;
		206
		207	pthread_attr_init (&attr);
		208	pthread_attr_setstacksize (&attr, STACKSIZE);
		209	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
		210
		211	sigfillset (&fullsigset);
		212	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
		213
		214	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
		215	started++;
		216
		217	sigprocmask (SIG_SETMASK, &oldsigset, 0);
		218	}
		219
		220	static void
		221	send_req (aio_req req)
		222	{
		223	nreqs++;
		224
		225	pthread_mutex_lock (&reqlock);
		226
		227	req->next = 0;
		228
		229	if (reqe)
		230	{
		231	reqe->next = req;
		232	reqe = req;
		233	}
		234	else
		235	reqe = reqs = req;
		236
		237	pthread_cond_signal (&reqwait);
		238	pthread_mutex_unlock (&reqlock);
		239
		240	if (nreqs > max_outstanding)
		241	for (;;)
		242	{
		243	poll_cb ();
		244
		245	if (nreqs <= max_outstanding)
		246	break;
		247
		248	poll_wait ();
		249	}
		250	}
		251
		252	static void
		253	end_thread (void)
		254	{
		255	aio_req req;
		256	Newz (0, req, 1, aio_cb);
		257	req->type = REQ_QUIT;
		258
		259	send_req (req);
		260	}
		261
		262	static void min_parallel (int nthreads)
		263	{
		264	while (nthreads > started)
		265	start_thread ();
		266	}
		267
		268	static void max_parallel (int nthreads)
		269	{
		270	int cur = started;
		271
		272	while (cur > nthreads)
		273	{
		274	end_thread ();
		275	cur--;
		276	}
		277
		278	while (started > nthreads)
		279	{
		280	poll_wait ();
		281	poll_cb ();
		282	}
		283	}
		284
		285	static void create_pipe ()
		286	{
		287	if (pipe (respipe))
		288	croak ("unable to initialize result pipe");
		289
		290	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
		291	croak ("cannot set result pipe to nonblocking mode");
		292
		293	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
		294	croak ("cannot set result pipe to nonblocking mode");
		295	}
		296
		297	static void atfork_prepare (void)
		298	{
		299	for (;;) {
		300
		301	for (;;)
		302	{
		303	poll_cb ();
		304
		305	if (!nreqs)
		306	break;
		307
		308	poll_wait ();
		309	}
		310
		311	pthread_mutex_lock (&reqlock);
		312
		313	if (!nreqs)
		314	break;
		315
		316	pthread_mutex_unlock (&reqlock);
		317	}
		318
		319	pthread_mutex_lock (&reslock);
		320
		321	assert (!nreqs && !reqs && !ress);
		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	{
		332	int restart = started;
		333	started = 0;
		334
		335	atfork_parent ();
		336
		337	min_parallel (restart);
		338	}
		339
		340	/*****************************************************************************/
		341	/* work around various missing functions */
		342
		343	#if !HAVE_PREADWRITE
		344	# define pread aio_pread
		345	# define pwrite aio_pwrite
		346
		347	/*
		348	* make our pread/pwrite safe against themselves, but not against
		349	* normal read/write by using a mutex. slows down execution a lot,
		350	* but that's your problem, not mine.
		351	*/
		352	static pthread_mutex_t iolock = PTHREAD_MUTEX_INITIALIZER;
		353
		354	static ssize_t
		355	pread (int fd, void *buf, size_t count, off_t offset)
		356	{
		357	ssize_t res;
		358	off_t ooffset;
		359
		360	pthread_mutex_lock (&iolock);
		361	ooffset = lseek (fd, 0, SEEK_CUR);
		362	lseek (fd, offset, SEEK_SET);
		363	res = read (fd, buf, count);
		364	lseek (fd, ooffset, SEEK_SET);
		365	pthread_mutex_unlock (&iolock);
		366
		367	return res;
		368	}
		369
		370	static ssize_t
		371	pwrite (int fd, void *buf, size_t count, off_t offset)
		372	{
		373	ssize_t res;
		374	off_t ooffset;
		375
		376	pthread_mutex_lock (&iolock);
		377	ooffset = lseek (fd, 0, SEEK_CUR);
		378	lseek (fd, offset, SEEK_SET);
		379	res = write (fd, buf, count);
		380	lseek (fd, offset, SEEK_SET);
		381	pthread_mutex_unlock (&iolock);
		382
		383	return res;
		384	}
		385	#endif
		386
		387	#if !HAVE_FDATASYNC
		388	# define fdatasync fsync
		389	#endif
		390
		391	#if !HAVE_READAHEAD
		392	# define readahead aio_readahead
		393
		394	static char readahead_buf[4096];
		395
		396	static ssize_t
		397	readahead (int fd, off_t offset, size_t count)
		398	{
		399	while (count > 0)
		400	{
		401	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
		402
		403	pread (fd, readahead_buf, len, offset);
		404	offset += len;
		405	count -= len;
		406	}
		407
		408	errno = 0;
		409	}
		410	#endif
		411
		412	/*****************************************************************************/
238		413
239	static void *	414	static void *
240	aio_proc (void *thr_arg)	415	aio_proc (void *thr_arg)
241	{	416	{
242	aio_req req;	417	aio_req req;
		418	int type;
243		419
244	/* then loop */	420	do
245	while (read (reqpipe[0], (void *)&req, sizeof (req)) == sizeof (req))
246	{	421	{
		422	pthread_mutex_lock (&reqlock);
		423
		424	for (;;)
		425	{
		426	req = reqs;
		427
		428	if (reqs)
		429	{
		430	reqs = reqs->next;
		431	if (!reqs) reqe = 0;
		432	}
		433
		434	if (req)
		435	break;
		436
		437	pthread_cond_wait (&reqwait, &reqlock);
		438	}
		439
		440	pthread_mutex_unlock (&reqlock);
		441
247	errno = 0; /* strictly unnecessary */	442	errno = 0; /* strictly unnecessary */
248		443
		444	type = req->type;
		445
249	switch (req->type)	446	switch (type)
250	{	447	{
251	case REQ_READ: req->result = pread64 (req->fd, req->dataptr, req->length, req->offset); break;	448	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
252	case REQ_WRITE: req->result = pwrite64 (req->fd, req->dataptr, req->length, req->offset); break;	449	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
253	#if SYS_readahead	450
254	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	451	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
255	#else
256	case REQ_READAHEAD: req->result = -1; errno = ENOSYS; break;
257	#endif
258		452
259	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	453	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
260	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	454	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
261	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	455	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
262		456
263	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;	457	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
264	case REQ_CLOSE: req->result = close (req->fd); break;	458	case REQ_CLOSE: req->result = close (req->fd); break;
265	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	459	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
		460	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
		461	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
266		462
		463	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
267	case REQ_FSYNC: req->result = fsync (req->fd); break;	464	case REQ_FSYNC: req->result = fsync (req->fd); break;
268	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
269		465
270	case REQ_QUIT:	466	case REQ_QUIT:
271	write (respipe[1], (void *)&req, sizeof (req));	467	break;
272	return 0;
273		468
274	default:	469	default:
275	req->result = ENOSYS;	470	req->result = ENOSYS;
276	break;	471	break;
277	}	472	}
278		473
279	req->errorno = errno;	474	req->errorno = errno;
280	write (respipe[1], (void *)&req, sizeof (req));	475
		476	pthread_mutex_lock (&reslock);
		477
		478	req->next = 0;
		479
		480	if (rese)
		481	{
		482	rese->next = req;
		483	rese = req;
		484	}
		485	else
		486	{
		487	rese = ress = req;
		488
		489	/* write a dummy byte to the pipe so fh becomes ready */
		490	write (respipe [1], &respipe, 1);
		491	}
		492
		493	pthread_mutex_unlock (&reslock);
281	}	494	}
		495	while (type != REQ_QUIT);
282		496
283	return 0;	497	return 0;
284	}	498	}
285		499
		500	#define dREQ \
		501	aio_req req; \
		502	\
		503	if (SvOK (callback) && !SvROK (callback)) \
		504	croak ("clalback must be undef or of reference type"); \
		505	\
		506	Newz (0, req, 1, aio_cb); \
		507	if (!req) \
		508	croak ("out of memory during aio_req allocation"); \
		509	\
		510	req->callback = newSVsv (callback);
		511
286	MODULE = IO::AIO PACKAGE = IO::AIO	512	MODULE = IO::AIO PACKAGE = IO::AIO
287		513
		514	PROTOTYPES: ENABLE
		515
288	BOOT:	516	BOOT:
289	{	517	{
290	if (pipe (reqpipe) \|\| pipe (respipe))	518	create_pipe ();
291	croak ("unable to initialize request or result pipe");	519	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
292
293	if (fcntl (reqpipe[1], F_SETFL, O_NONBLOCK))
294	croak ("cannot set result pipe to nonblocking mode");
295
296	if (fcntl (respipe[0], F_SETFL, O_NONBLOCK))
297	croak ("cannot set result pipe to nonblocking mode");
298	}	520	}
299		521
300	void	522	void
301	min_parallel(nthreads)	523	min_parallel(nthreads)
302	int nthreads	524	int nthreads
303	PROTOTYPE: $	525	PROTOTYPE: $
304	CODE:
305	while (nthreads > started)
306	start_thread ();
307		526
308	void	527	void
309	max_parallel(nthreads)	528	max_parallel(nthreads)
310	int nthreads	529	int nthreads
311	PROTOTYPE: $	530	PROTOTYPE: $
		531
		532	int
		533	max_outstanding(nreqs)
		534	int nreqs
		535	PROTOTYPE: $
312	CODE:	536	CODE:
313	{	537	RETVAL = max_outstanding;
314	int cur = started;	538	max_outstanding = nreqs;
315	while (cur > nthreads)
316	{
317	end_thread ();
318	cur--;
319	}
320		539
321	while (started > nthreads)
322	{
323	poll_wait ();
324	poll_cb (aTHX);
325	}
326	}
327
328	void	540	void
329	aio_open(pathname,flags,mode,callback)	541	aio_open(pathname,flags,mode,callback=&PL_sv_undef)
330	SV * pathname	542	SV * pathname
331	int flags	543	int flags
332	int mode	544	int mode
333	SV * callback	545	SV * callback
334	PROTOTYPE: $$$$	546	PROTOTYPE: $$$;$
335	CODE:	547	CODE:
336	{	548	{
337	aio_req req;	549	dREQ;
338
339	Newz (0, req, 1, aio_cb);
340
341	if (!req)
342	croak ("out of memory during aio_req allocation");
343		550
344	req->type = REQ_OPEN;	551	req->type = REQ_OPEN;
345	req->data = newSVsv (pathname);	552	req->data = newSVsv (pathname);
346	req->dataptr = SvPV_nolen (req->data);	553	req->dataptr = SvPVbyte_nolen (req->data);
347	req->fd = flags;	554	req->fd = flags;
348	req->mode = mode;	555	req->mode = mode;
349	req->callback = SvREFCNT_inc (callback);
350		556
351	send_req (req);	557	send_req (req);
352	}	558	}
353		559
354	void	560	void
355	aio_close(fh,callback)	561	aio_close(fh,callback=&PL_sv_undef)
356	InputStream fh	562	SV * fh
357	SV * callback	563	SV * callback
358	PROTOTYPE: $$	564	PROTOTYPE: $;$
359	ALIAS:	565	ALIAS:
360	aio_close = REQ_CLOSE	566	aio_close = REQ_CLOSE
361	aio_fsync = REQ_FSYNC	567	aio_fsync = REQ_FSYNC
362	aio_fdatasync = REQ_FDATASYNC	568	aio_fdatasync = REQ_FDATASYNC
363	CODE:	569	CODE:
364	{	570	{
		571	dREQ;
		572
		573	req->type = ix;
		574	req->fh = newSVsv (fh);
		575	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
		576
		577	send_req (req);
		578	}
		579
		580	void
		581	aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
		582	SV * fh
		583	UV offset
		584	IV length
		585	SV * data
		586	IV dataoffset
		587	SV * callback
		588	ALIAS:
		589	aio_read = REQ_READ
		590	aio_write = REQ_WRITE
		591	PROTOTYPE: $$$$$;$
		592	CODE:
		593	{
365	aio_req req;	594	aio_req req;
		595	STRLEN svlen;
		596	char *svptr = SvPVbyte (data, svlen);
366		597
367	Newz (0, req, 1, aio_cb);	598	SvUPGRADE (data, SVt_PV);
		599	SvPOK_on (data);
368		600
369	if (!req)	601	if (dataoffset < 0)
370	croak ("out of memory during aio_req allocation");	602	dataoffset += svlen;
371		603
372	req->type = ix;	604	if (dataoffset < 0 \|\| dataoffset > svlen)
373	req->fd = PerlIO_fileno (fh);	605	croak ("data offset outside of string");
374	req->callback = SvREFCNT_inc (callback);
375		606
376	send_req (req);	607	if (ix == REQ_WRITE)
377	}	608	{
378		609	/* write: check length and adjust. */
379	void	610	if (length < 0 \|\| length + dataoffset > svlen)
380	aio_read(fh,offset,length,data,dataoffset,callback)	611	length = svlen - dataoffset;
381	InputStream fh	612	}
382	UV offset	613	else
383	IV length	614	{
384	SV * data	615	/* read: grow scalar as necessary */
385	IV dataoffset	616	svptr = SvGROW (data, length + dataoffset);
386	SV * callback	617	}
387	PROTOTYPE: $$$$$$
388	CODE:
389	read_write (aTHX_ 0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
390
391	void
392	aio_write(fh,offset,length,data,dataoffset,callback)
393	OutputStream fh
394	UV offset
395	IV length
396	SV * data
397	IV dataoffset
398	SV * callback
399	PROTOTYPE: $$$$$$
400	CODE:
401	read_write (aTHX_ 1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
402
403	void
404	aio_readahead(fh,offset,length,callback)
405	InputStream fh
406	UV offset
407	IV length
408	SV * callback
409	PROTOTYPE: $$$$
410	CODE:
411	{
412	aio_req req;
413		618
414	if (length < 0)	619	if (length < 0)
415	croak ("length must not be negative");	620	croak ("length must not be negative");
416		621
417	Newz (0, req, 1, aio_cb);	622	{
		623	dREQ;
418		624
419	if (!req)	625	req->type = ix;
420	croak ("out of memory during aio_req allocation");	626	req->fh = newSVsv (fh);
		627	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
		628	: IoOFP (sv_2io (fh)));
		629	req->offset = offset;
		630	req->length = length;
		631	req->data = SvREFCNT_inc (data);
		632	req->dataptr = (char *)svptr + dataoffset;
		633
		634	send_req (req);
		635	}
		636	}
		637
		638	void
		639	aio_readahead(fh,offset,length,callback=&PL_sv_undef)
		640	SV * fh
		641	UV offset
		642	IV length
		643	SV * callback
		644	PROTOTYPE: $$$;$
		645	CODE:
		646	{
		647	dREQ;
421		648
422	req->type = REQ_READAHEAD;	649	req->type = REQ_READAHEAD;
		650	req->fh = newSVsv (fh);
423	req->fd = PerlIO_fileno (fh);	651	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
424	req->offset = offset;	652	req->offset = offset;
425	req->length = length;	653	req->length = length;
426	req->callback = SvREFCNT_inc (callback);
427		654
428	send_req (req);	655	send_req (req);
429	}	656	}
430		657
431	void	658	void
432	aio_stat(fh_or_path,callback)	659	aio_stat(fh_or_path,callback=&PL_sv_undef)
433	SV * fh_or_path	660	SV * fh_or_path
434	SV * callback	661	SV * callback
435	PROTOTYPE: $$
436	ALIAS:	662	ALIAS:
		663	aio_stat = REQ_STAT
437	aio_lstat = 1	664	aio_lstat = REQ_LSTAT
438	CODE:	665	CODE:
439	{	666	{
440	aio_req req;	667	dREQ;
441
442	Newz (0, req, 1, aio_cb);
443
444	if (!req)
445	croak ("out of memory during aio_req allocation");
446		668
447	New (0, req->statdata, 1, Stat_t);	669	New (0, req->statdata, 1, Stat_t);
448
449	if (!req->statdata)	670	if (!req->statdata)
		671	{
		672	free_req (req);
450	croak ("out of memory during aio_req->statdata allocation");	673	croak ("out of memory during aio_req->statdata allocation");
		674	}
451		675
452	if (SvPOK (fh_or_path))	676	if (SvPOK (fh_or_path))
453	{	677	{
454	req->type = ix ? REQ_LSTAT : REQ_STAT;	678	req->type = ix;
455	req->data = newSVsv (fh_or_path);	679	req->data = newSVsv (fh_or_path);
456	req->dataptr = SvPV_nolen (req->data);	680	req->dataptr = SvPVbyte_nolen (req->data);
457	}	681	}
458	else	682	else
459	{	683	{
460	req->type = REQ_FSTAT;	684	req->type = REQ_FSTAT;
		685	req->fh = newSVsv (fh_or_path);
461	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	686	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
462	}	687	}
463		688
464	req->callback = SvREFCNT_inc (callback);
465
466	send_req (req);	689	send_req (req);
467	}	690	}
468		691
469	void	692	void
470	aio_unlink(pathname,callback)	693	aio_unlink(pathname,callback=&PL_sv_undef)
471	SV * pathname	694	SV * pathname
472	SV * callback	695	SV * callback
473	PROTOTYPE: $$	696	ALIAS:
		697	aio_unlink = REQ_UNLINK
		698	aio_rmdir = REQ_RMDIR
474	CODE:	699	CODE:
475	{	700	{
476	aio_req req;	701	dREQ;
477		702
478	Newz (0, req, 1, aio_cb);	703	req->type = ix;
479
480	if (!req)
481	croak ("out of memory during aio_req allocation");
482
483	req->type = REQ_UNLINK;
484	req->data = newSVsv (pathname);	704	req->data = newSVsv (pathname);
485	req->dataptr = SvPV_nolen (req->data);	705	req->dataptr = SvPVbyte_nolen (req->data);
486	req->callback = SvREFCNT_inc (callback);
487		706
488	send_req (req);	707	send_req (req);
489	}	708	}
		709
		710	void
		711	aio_symlink(oldpath,newpath,callback=&PL_sv_undef)
		712	SV * oldpath
		713	SV * newpath
		714	SV * callback
		715	CODE:
		716	{
		717	dREQ;
		718
		719	req->type = REQ_SYMLINK;
		720	req->fh = newSVsv (oldpath);
		721	req->data2ptr = SvPVbyte_nolen (req->fh);
		722	req->data = newSVsv (newpath);
		723	req->dataptr = SvPVbyte_nolen (req->data);
		724
		725	send_req (req);
		726	}
		727
		728	void
		729	flush()
		730	PROTOTYPE:
		731	CODE:
		732	while (nreqs)
		733	{
		734	poll_wait ();
		735	poll_cb ();
		736	}
		737
		738	void
		739	poll()
		740	PROTOTYPE:
		741	CODE:
		742	if (nreqs)
		743	{
		744	poll_wait ();
		745	poll_cb ();
		746	}
490		747
491	int	748	int
492	poll_fileno()	749	poll_fileno()
493	PROTOTYPE:	750	PROTOTYPE:
494	CODE:	751	CODE:
495	RETVAL = respipe[0];	752	RETVAL = respipe [0];
496	OUTPUT:	753	OUTPUT:
497	RETVAL	754	RETVAL
498		755
499	int	756	int
500	poll_cb(...)	757	poll_cb(...)
501	PROTOTYPE:	758	PROTOTYPE:
502	CODE:	759	CODE:
503	RETVAL = poll_cb (aTHX);	760	RETVAL = poll_cb ();
504	OUTPUT:	761	OUTPUT:
505	RETVAL	762	RETVAL
506		763
507	void	764	void
508	poll_wait()	765	poll_wait()
509	PROTOTYPE:	766	PROTOTYPE:
510	CODE:	767	CODE:
		768	if (nreqs)
511	poll_wait ();	769	poll_wait ();
512		770
513	int	771	int
514	nreqs()	772	nreqs()
515	PROTOTYPE:	773	PROTOTYPE:
516	CODE:	774	CODE:

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Comparing IO-AIO/AIO.xs (file contents): Revision 1.1 by root, Sun Jul 10 17:07:44 2005 UTC vs. Revision 1.27 by root, Wed Aug 17 04:47:02 2005 UTC

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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.1 by root, Sun Jul 10 17:07:44 2005 UTC vs.
Revision 1.27 by root, Wed Aug 17 04:47:02 2005 UTC