[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 1.26 by root, Wed Aug 17 03:52:20 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_mutex_t frklock = PTHREAD_MUTEX_INITIALIZER;
		68	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
		69
62	static aio_req qs, qe; /* queue start, queue end */	70	static volatile aio_req reqs, reqe; /* queue start, queue end */
		71	static volatile aio_req ress, rese; /* queue start, queue end */
63		72
64	static void aio_proc(void arg);	73	static void free_req (aio_req req)
65
66	static void
67	start_thread (void)
68	{	74	{
69	sigset_t fullsigset, oldsigset;	75	if (req->data)
70	pthread_t tid;	76	SvREFCNT_dec (req->data);
71	pthread_attr_t attr;
72		77
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)	78	if (req->fh)
160	croak ("out of memory during aio_req allocation");	79	SvREFCNT_dec (req->fh);
161		80
162	req->type = dowrite ? REQ_WRITE : REQ_READ;	81	if (req->type == REQ_STAT \|\| req->type == REQ_LSTAT \|\| req->type == REQ_FSTAT)
163	req->fd = fd;	82	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		83
170	send_req (req);	84	if (req->callback)
		85	SvREFCNT_dec (req->callback);
		86
		87	Safefree (req);
171	}	88	}
172		89
173	static void	90	static void
174	poll_wait ()	91	poll_wait ()
175	{	92	{
		93	if (nreqs && !ress)
		94	{
176	fd_set rfd;	95	fd_set rfd;
177	FD_ZERO(&rfd);	96	FD_ZERO(&rfd);
178	FD_SET(respipe[0], &rfd);	97	FD_SET(respipe [0], &rfd);
179		98
180	select (respipe[0] + 1, &rfd, 0, 0, 0);	99	select (respipe [0] + 1, &rfd, 0, 0, 0);
		100	}
181	}	101	}
182		102
183	static int	103	static int
184	poll_cb (pTHX)	104	poll_cb ()
185	{	105	{
186	dSP;	106	dSP;
187	int count = 0;	107	int count = 0;
		108	int do_croak = 0;
188	aio_req req;	109	aio_req req, prv;
189		110
190	while (read (respipe[0], (void *)&req, sizeof (req)) == sizeof (req))	111	pthread_mutex_lock (&reslock);
		112
		113	{
		114	/* read any signals sent by the worker threads */
		115	char buf [32];
		116	while (read (respipe [0], buf, 32) == 32)
		117	;
		118	}
		119
		120	req = ress;
		121	ress = rese = 0;
		122
		123	pthread_mutex_unlock (&reslock);
		124
		125	while (req)
191	{	126	{
192	nreqs--;	127	nreqs--;
193		128
194	if (req->type == REQ_QUIT)	129	if (req->type == REQ_QUIT)
195	started--;	130	started--;
200		135
201	if (req->type == REQ_READ)	136	if (req->type == REQ_READ)
202	SvCUR_set (req->data, req->dataoffset	137	SvCUR_set (req->data, req->dataoffset
203	+ req->result > 0 ? req->result : 0);	138	+ req->result > 0 ? req->result : 0);
204		139
205	if (req->data)
206	SvREFCNT_dec (req->data);
207
208	if (req->type == REQ_STAT \|\| req->type == REQ_LSTAT \|\| req->type == REQ_FSTAT)	140	if (req->type == REQ_STAT \|\| req->type == REQ_LSTAT \|\| req->type == REQ_FSTAT)
209	{	141	{
210	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	142	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
211	PL_laststatval = req->result;	143	PL_laststatval = req->result;
212	PL_statcache = *(req->statdata);	144	PL_statcache = *(req->statdata);
213
214	Safefree (req->statdata);
215	}	145	}
216		146
		147	ENTER;
217	PUSHMARK (SP);	148	PUSHMARK (SP);
218	XPUSHs (sv_2mortal (newSViv (req->result)));	149	XPUSHs (sv_2mortal (newSViv (req->result)));
		150
		151	if (req->type == REQ_OPEN)
		152	{
		153	/* convert fd to fh */
		154	SV *fh;
		155
219	PUTBACK;	156	PUTBACK;
220	call_sv (req->callback, G_VOID);	157	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);
221	SPAGAIN;	158	SPAGAIN;
		159
		160	fh = SvREFCNT_inc (POPs);
		161
		162	PUSHMARK (SP);
		163	XPUSHs (sv_2mortal (fh));
		164	}
		165
		166	if (SvOK (req->callback))
		167	{
		168	PUTBACK;
		169	call_sv (req->callback, G_VOID \| G_EVAL);
		170	SPAGAIN;
		171	}
		172
		173	LEAVE;
		174
		175	do_croak = SvTRUE (ERRSV);
222		176
223	if (req->callback)
224	SvREFCNT_dec (req->callback);
225
226	errno = errorno;	177	errno = errorno;
227	count++;	178	count++;
228	}	179	}
229		180
230	Safefree (req);	181	prv = req;
231	}	182	req = req->next;
		183	free_req (prv);
232		184
233	if (qs)	185	if (do_croak)
234	send_reqs ();	186	croak (0);
		187	}
235		188
236	return count;	189	return count;
237	}	190	}
		191
		192	static void aio_proc(void arg);
		193
		194	static void
		195	start_thread (void)
		196	{
		197	sigset_t fullsigset, oldsigset;
		198	pthread_t tid;
		199	pthread_attr_t attr;
		200
		201	pthread_attr_init (&attr);
		202	pthread_attr_setstacksize (&attr, STACKSIZE);
		203	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
		204
		205	sigfillset (&fullsigset);
		206	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
		207
		208	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
		209	started++;
		210
		211	sigprocmask (SIG_SETMASK, &oldsigset, 0);
		212	}
		213
		214	static void
		215	send_req (aio_req req)
		216	{
		217	nreqs++;
		218
		219	pthread_mutex_lock (&reqlock);
		220
		221	req->next = 0;
		222
		223	if (reqe)
		224	{
		225	reqe->next = req;
		226	reqe = req;
		227	}
		228	else
		229	reqe = reqs = req;
		230
		231	pthread_cond_signal (&reqwait);
		232	pthread_mutex_unlock (&reqlock);
		233
		234	while (nreqs > max_outstanding)
		235	{
		236	poll_wait ();
		237	poll_cb ();
		238	}
		239	}
		240
		241	static void
		242	end_thread (void)
		243	{
		244	aio_req req;
		245	Newz (0, req, 1, aio_cb);
		246	req->type = REQ_QUIT;
		247
		248	send_req (req);
		249	}
		250
		251
		252	static void min_parallel (int nthreads)
		253	{
		254	while (nthreads > started)
		255	start_thread ();
		256	}
		257
		258	static void max_parallel (int nthreads)
		259	{
		260	int cur = started;
		261	while (cur > nthreads)
		262	{
		263	end_thread ();
		264	cur--;
		265	}
		266
		267	while (started > nthreads)
		268	{
		269	poll_wait ();
		270	poll_cb ();
		271	}
		272	}
		273
		274	static void create_pipe ()
		275	{
		276	if (pipe (respipe))
		277	croak ("unable to initialize result pipe");
		278
		279	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
		280	croak ("cannot set result pipe to nonblocking mode");
		281
		282	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
		283	croak ("cannot set result pipe to nonblocking mode");
		284	}
		285
		286	static void atfork_prepare (void)
		287	{
		288	pthread_mutex_lock (&frklock);
		289	pthread_mutex_lock (&reqlock);
		290	pthread_mutex_lock (&reslock);
		291	}
		292
		293	static void atfork_parent (void)
		294	{
		295	pthread_mutex_unlock (&reslock);
		296	pthread_mutex_unlock (&reqlock);
		297	pthread_mutex_unlock (&frklock);
		298	}
		299
		300	static void atfork_child (void)
		301	{
		302	int restart = started;
		303	started = 0;
		304
		305	while (reqs)
		306	{
		307	free_req (reqs);
		308	reqs = reqs->next;
		309	}
		310
		311	reqs = reqe = 0;
		312
		313	while (ress)
		314	{
		315	free_req (ress);
		316	ress = ress->next;
		317	}
		318
		319	ress = rese = 0;
		320
		321	close (respipe [0]);
		322	close (respipe [1]);
		323
		324	create_pipe ();
		325
		326	atfork_parent ();
		327
		328	min_parallel (restart);
		329	}
		330
		331	/*****************************************************************************/
		332	/* work around various missing functions */
		333
		334	#if !HAVE_PREADWRITE
		335	# define pread aio_pread
		336	# define pwrite aio_pwrite
		337
		338	/*
		339	* make our pread/pwrite safe against themselves, but not against
		340	* normal read/write by using a mutex. slows down execution a lot,
		341	* but that's your problem, not mine.
		342	*/
		343	static pthread_mutex_t iolock = PTHREAD_MUTEX_INITIALIZER;
		344
		345	static ssize_t
		346	pread (int fd, void *buf, size_t count, off_t offset)
		347	{
		348	ssize_t res;
		349	off_t ooffset;
		350
		351	pthread_mutex_lock (&iolock);
		352	ooffset = lseek (fd, 0, SEEK_CUR);
		353	lseek (fd, offset, SEEK_SET);
		354	res = read (fd, buf, count);
		355	lseek (fd, ooffset, SEEK_SET);
		356	pthread_mutex_unlock (&iolock);
		357
		358	return res;
		359	}
		360
		361	static ssize_t
		362	pwrite (int fd, void *buf, size_t count, off_t offset)
		363	{
		364	ssize_t res;
		365	off_t ooffset;
		366
		367	pthread_mutex_lock (&iolock);
		368	ooffset = lseek (fd, 0, SEEK_CUR);
		369	lseek (fd, offset, SEEK_SET);
		370	res = write (fd, buf, count);
		371	lseek (fd, offset, SEEK_SET);
		372	pthread_mutex_unlock (&iolock);
		373
		374	return res;
		375	}
		376	#endif
		377
		378	#if !HAVE_FDATASYNC
		379	# define fdatasync fsync
		380	#endif
		381
		382	#if !HAVE_READAHEAD
		383	# define readahead aio_readahead
		384
		385	static char readahead_buf[4096];
		386
		387	static ssize_t
		388	readahead (int fd, off_t offset, size_t count)
		389	{
		390	while (count > 0)
		391	{
		392	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
		393
		394	pread (fd, readahead_buf, len, offset);
		395	offset += len;
		396	count -= len;
		397	}
		398
		399	errno = 0;
		400	}
		401	#endif
		402
		403	/*****************************************************************************/
238		404
239	static void *	405	static void *
240	aio_proc (void *thr_arg)	406	aio_proc (void *thr_arg)
241	{	407	{
242	aio_req req;	408	aio_req req;
		409	int type;
243		410
244	/* then loop */	411	do
245	while (read (reqpipe[0], (void *)&req, sizeof (req)) == sizeof (req))	412	{
		413	pthread_mutex_lock (&reqlock);
		414
		415	for (;;)
		416	{
		417	req = reqs;
		418
		419	if (reqs)
		420	{
		421	reqs = reqs->next;
		422	if (!reqs) reqe = 0;
		423	}
		424
		425	if (req)
		426	break;
		427
		428	pthread_cond_wait (&reqwait, &reqlock);
		429	}
		430
		431	pthread_mutex_unlock (&reqlock);
246	{	432
247	errno = 0; /* strictly unnecessary */	433	errno = 0; /* strictly unnecessary */
248		434
		435	type = req->type;
		436
249	switch (req->type)	437	switch (type)
250	{	438	{
251	case REQ_READ: req->result = pread64 (req->fd, req->dataptr, req->length, req->offset); break;	439	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;	440	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
253	#if SYS_readahead	441
254	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	442	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		443
259	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	444	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
260	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	445	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
261	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	446	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
262		447
263	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;	448	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
264	case REQ_CLOSE: req->result = close (req->fd); break;	449	case REQ_CLOSE: req->result = close (req->fd); break;
265	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	450	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
		451	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
		452	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
266		453
		454	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
267	case REQ_FSYNC: req->result = fsync (req->fd); break;	455	case REQ_FSYNC: req->result = fsync (req->fd); break;
268	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
269		456
270	case REQ_QUIT:	457	case REQ_QUIT:
271	write (respipe[1], (void *)&req, sizeof (req));	458	break;
272	return 0;
273		459
274	default:	460	default:
275	req->result = ENOSYS;	461	req->result = ENOSYS;
276	break;	462	break;
277	}	463	}
278		464
279	req->errorno = errno;	465	req->errorno = errno;
280	write (respipe[1], (void *)&req, sizeof (req));	466
		467	pthread_mutex_lock (&reslock);
		468
		469	req->next = 0;
		470
		471	if (rese)
		472	{
		473	rese->next = req;
		474	rese = req;
		475	}
		476	else
		477	{
		478	rese = ress = req;
		479
		480	/* write a dummy byte to the pipe so fh becomes ready */
		481	write (respipe [1], &respipe, 1);
		482	}
		483
		484	pthread_mutex_unlock (&reslock);
281	}	485	}
		486	while (type != REQ_QUIT);
282		487
283	return 0;	488	return 0;
284	}	489	}
285		490
		491	#define dREQ \
		492	aio_req req; \
		493	\
		494	if (SvOK (callback) && !SvROK (callback)) \
		495	croak ("clalback must be undef or of reference type"); \
		496	\
		497	Newz (0, req, 1, aio_cb); \
		498	if (!req) \
		499	croak ("out of memory during aio_req allocation"); \
		500	\
		501	req->callback = SvREFCNT_inc (callback);
		502
286	MODULE = IO::AIO PACKAGE = IO::AIO	503	MODULE = IO::AIO PACKAGE = IO::AIO
287		504
		505	PROTOTYPES: ENABLE
		506
288	BOOT:	507	BOOT:
289	{	508	{
290	if (pipe (reqpipe) \|\| pipe (respipe))	509	create_pipe ();
291	croak ("unable to initialize request or result pipe");	510	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	}	511	}
299		512
300	void	513	void
301	min_parallel(nthreads)	514	min_parallel(nthreads)
302	int nthreads	515	int nthreads
303	PROTOTYPE: $	516	PROTOTYPE: $
304	CODE:
305	while (nthreads > started)
306	start_thread ();
307		517
308	void	518	void
309	max_parallel(nthreads)	519	max_parallel(nthreads)
310	int nthreads	520	int nthreads
311	PROTOTYPE: $	521	PROTOTYPE: $
		522
		523	int
		524	max_outstanding(nreqs)
		525	int nreqs
		526	PROTOTYPE: $
312	CODE:	527	CODE:
313	{	528	RETVAL = max_outstanding;
314	int cur = started;	529	max_outstanding = nreqs;
315	while (cur > nthreads)
316	{
317	end_thread ();
318	cur--;
319	}
320		530
321	while (started > nthreads)
322	{
323	poll_wait ();
324	poll_cb (aTHX);
325	}
326	}
327
328	void	531	void
329	aio_open(pathname,flags,mode,callback)	532	aio_open(pathname,flags,mode,callback=&PL_sv_undef)
330	SV * pathname	533	SV * pathname
331	int flags	534	int flags
332	int mode	535	int mode
333	SV * callback	536	SV * callback
334	PROTOTYPE: $$$$	537	PROTOTYPE: $$$;$
335	CODE:	538	CODE:
336	{	539	{
337	aio_req req;	540	dREQ;
338
339	Newz (0, req, 1, aio_cb);
340
341	if (!req)
342	croak ("out of memory during aio_req allocation");
343		541
344	req->type = REQ_OPEN;	542	req->type = REQ_OPEN;
345	req->data = newSVsv (pathname);	543	req->data = newSVsv (pathname);
346	req->dataptr = SvPV_nolen (req->data);	544	req->dataptr = SvPVbyte_nolen (req->data);
347	req->fd = flags;	545	req->fd = flags;
348	req->mode = mode;	546	req->mode = mode;
349	req->callback = SvREFCNT_inc (callback);
350		547
351	send_req (req);	548	send_req (req);
352	}	549	}
353		550
354	void	551	void
355	aio_close(fh,callback)	552	aio_close(fh,callback=&PL_sv_undef)
356	InputStream fh	553	SV * fh
357	SV * callback	554	SV * callback
358	PROTOTYPE: $$	555	PROTOTYPE: $;$
359	ALIAS:	556	ALIAS:
360	aio_close = REQ_CLOSE	557	aio_close = REQ_CLOSE
361	aio_fsync = REQ_FSYNC	558	aio_fsync = REQ_FSYNC
362	aio_fdatasync = REQ_FDATASYNC	559	aio_fdatasync = REQ_FDATASYNC
363	CODE:	560	CODE:
364	{	561	{
		562	dREQ;
		563
		564	req->type = ix;
		565	req->fh = newSVsv (fh);
		566	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
		567
		568	send_req (req);
		569	}
		570
		571	void
		572	aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
		573	SV * fh
		574	UV offset
		575	IV length
		576	SV * data
		577	IV dataoffset
		578	SV * callback
		579	ALIAS:
		580	aio_read = REQ_READ
		581	aio_write = REQ_WRITE
		582	PROTOTYPE: $$$$$;$
		583	CODE:
		584	{
365	aio_req req;	585	aio_req req;
		586	STRLEN svlen;
		587	char *svptr = SvPVbyte (data, svlen);
366		588
367	Newz (0, req, 1, aio_cb);	589	SvUPGRADE (data, SVt_PV);
		590	SvPOK_on (data);
368		591
369	if (!req)	592	if (dataoffset < 0)
370	croak ("out of memory during aio_req allocation");	593	dataoffset += svlen;
371		594
372	req->type = ix;	595	if (dataoffset < 0 \|\| dataoffset > svlen)
373	req->fd = PerlIO_fileno (fh);	596	croak ("data offset outside of string");
374	req->callback = SvREFCNT_inc (callback);
375		597
376	send_req (req);	598	if (ix == REQ_WRITE)
377	}	599	{
378		600	/* write: check length and adjust. */
379	void	601	if (length < 0 \|\| length + dataoffset > svlen)
380	aio_read(fh,offset,length,data,dataoffset,callback)	602	length = svlen - dataoffset;
381	InputStream fh	603	}
382	UV offset	604	else
383	IV length	605	{
384	SV * data	606	/* read: grow scalar as necessary */
385	IV dataoffset	607	svptr = SvGROW (data, length + dataoffset);
386	SV * callback	608	}
387	PROTOTYPE: $$$$$$
388	CODE:
389	read_write (aTHX_ 0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
390
391	void
392	aio_write(fh,offset,length,data,dataoffset,callback)
393	OutputStream fh
394	UV offset
395	IV length
396	SV * data
397	IV dataoffset
398	SV * callback
399	PROTOTYPE: $$$$$$
400	CODE:
401	read_write (aTHX_ 1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
402
403	void
404	aio_readahead(fh,offset,length,callback)
405	InputStream fh
406	UV offset
407	IV length
408	SV * callback
409	PROTOTYPE: $$$$
410	CODE:
411	{
412	aio_req req;
413		609
414	if (length < 0)	610	if (length < 0)
415	croak ("length must not be negative");	611	croak ("length must not be negative");
416		612
417	Newz (0, req, 1, aio_cb);	613	{
		614	dREQ;
418		615
419	if (!req)	616	req->type = ix;
420	croak ("out of memory during aio_req allocation");	617	req->fh = newSVsv (fh);
		618	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
		619	: IoOFP (sv_2io (fh)));
		620	req->offset = offset;
		621	req->length = length;
		622	req->data = SvREFCNT_inc (data);
		623	req->dataptr = (char *)svptr + dataoffset;
		624	req->callback = SvREFCNT_inc (callback);
		625
		626	send_req (req);
		627	}
		628	}
		629
		630	void
		631	aio_readahead(fh,offset,length,callback=&PL_sv_undef)
		632	SV * fh
		633	UV offset
		634	IV length
		635	SV * callback
		636	PROTOTYPE: $$$;$
		637	CODE:
		638	{
		639	dREQ;
421		640
422	req->type = REQ_READAHEAD;	641	req->type = REQ_READAHEAD;
		642	req->fh = newSVsv (fh);
423	req->fd = PerlIO_fileno (fh);	643	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
424	req->offset = offset;	644	req->offset = offset;
425	req->length = length;	645	req->length = length;
426	req->callback = SvREFCNT_inc (callback);
427		646
428	send_req (req);	647	send_req (req);
429	}	648	}
430		649
431	void	650	void
432	aio_stat(fh_or_path,callback)	651	aio_stat(fh_or_path,callback=&PL_sv_undef)
433	SV * fh_or_path	652	SV * fh_or_path
434	SV * callback	653	SV * callback
435	PROTOTYPE: $$
436	ALIAS:	654	ALIAS:
		655	aio_stat = REQ_STAT
437	aio_lstat = 1	656	aio_lstat = REQ_LSTAT
438	CODE:	657	CODE:
439	{	658	{
440	aio_req req;	659	dREQ;
441
442	Newz (0, req, 1, aio_cb);
443
444	if (!req)
445	croak ("out of memory during aio_req allocation");
446		660
447	New (0, req->statdata, 1, Stat_t);	661	New (0, req->statdata, 1, Stat_t);
448
449	if (!req->statdata)	662	if (!req->statdata)
450	croak ("out of memory during aio_req->statdata allocation");	663	croak ("out of memory during aio_req->statdata allocation (sorry, i just leaked memory, too)");
451		664
452	if (SvPOK (fh_or_path))	665	if (SvPOK (fh_or_path))
453	{	666	{
454	req->type = ix ? REQ_LSTAT : REQ_STAT;	667	req->type = ix;
455	req->data = newSVsv (fh_or_path);	668	req->data = newSVsv (fh_or_path);
456	req->dataptr = SvPV_nolen (req->data);	669	req->dataptr = SvPVbyte_nolen (req->data);
457	}	670	}
458	else	671	else
459	{	672	{
460	req->type = REQ_FSTAT;	673	req->type = REQ_FSTAT;
		674	req->fh = newSVsv (fh_or_path);
461	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	675	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
462	}	676	}
463		677
464	req->callback = SvREFCNT_inc (callback);
465
466	send_req (req);	678	send_req (req);
467	}	679	}
468		680
469	void	681	void
470	aio_unlink(pathname,callback)	682	aio_unlink(pathname,callback=&PL_sv_undef)
471	SV * pathname	683	SV * pathname
472	SV * callback	684	SV * callback
473	PROTOTYPE: $$	685	ALIAS:
		686	aio_unlink = REQ_UNLINK
		687	aio_rmdir = REQ_RMDIR
474	CODE:	688	CODE:
475	{	689	{
476	aio_req req;	690	dREQ;
477		691
478	Newz (0, req, 1, aio_cb);	692	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);	693	req->data = newSVsv (pathname);
485	req->dataptr = SvPV_nolen (req->data);	694	req->dataptr = SvPVbyte_nolen (req->data);
486	req->callback = SvREFCNT_inc (callback);
487		695
488	send_req (req);	696	send_req (req);
489	}	697	}
		698
		699	void
		700	aio_symlink(oldpath,newpath,callback=&PL_sv_undef)
		701	SV * oldpath
		702	SV * newpath
		703	SV * callback
		704	CODE:
		705	{
		706	dREQ;
		707
		708	req->type = REQ_SYMLINK;
		709	req->fh = newSVsv (oldpath);
		710	req->data2ptr = SvPVbyte_nolen (req->fh);
		711	req->data = newSVsv (newpath);
		712	req->dataptr = SvPVbyte_nolen (req->data);
		713
		714	send_req (req);
		715	}
		716
		717	void
		718	flush()
		719	PROTOTYPE:
		720	CODE:
		721	while (nreqs)
		722	{
		723	poll_wait ();
		724	poll_cb ();
		725	}
		726
		727	void
		728	poll()
		729	PROTOTYPE:
		730	CODE:
		731	if (nreqs)
		732	{
		733	poll_wait ();
		734	poll_cb ();
		735	}
490		736
491	int	737	int
492	poll_fileno()	738	poll_fileno()
493	PROTOTYPE:	739	PROTOTYPE:
494	CODE:	740	CODE:
495	RETVAL = respipe[0];	741	RETVAL = respipe [0];
496	OUTPUT:	742	OUTPUT:
497	RETVAL	743	RETVAL
498		744
499	int	745	int
500	poll_cb(...)	746	poll_cb(...)
501	PROTOTYPE:	747	PROTOTYPE:
502	CODE:	748	CODE:
503	RETVAL = poll_cb (aTHX);	749	RETVAL = poll_cb ();
504	OUTPUT:	750	OUTPUT:
505	RETVAL	751	RETVAL
506		752
507	void	753	void
508	poll_wait()	754	poll_wait()
509	PROTOTYPE:	755	PROTOTYPE:
510	CODE:	756	CODE:
		757	if (nreqs)
511	poll_wait ();	758	poll_wait ();
512		759
513	int	760	int
514	nreqs()	761	nreqs()
515	PROTOTYPE:	762	PROTOTYPE:
516	CODE:	763	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 1.26 by root, Wed Aug 17 03:52:20 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 1.26 by root, Wed Aug 17 03:52:20 2005 UTC