[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 1.28 by root, Wed Aug 17 05:06:59 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
		147	if (req->data2ptr && (req->type == REQ_READ \|\| req->type == REQ_WRITE))
		148	SvREADONLY_off (req->data);
		149
205	if (req->data)	150	if (req->statdata)
206	SvREFCNT_dec (req->data);
207
208	if (req->type == REQ_STAT \|\| req->type == REQ_LSTAT \|\| req->type == REQ_FSTAT)
209	{	151	{
210	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	152	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
211	PL_laststatval = req->result;	153	PL_laststatval = req->result;
212	PL_statcache = *(req->statdata);	154	PL_statcache = *(req->statdata);
213
214	Safefree (req->statdata);
215	}	155	}
216		156
		157	ENTER;
217	PUSHMARK (SP);	158	PUSHMARK (SP);
218	XPUSHs (sv_2mortal (newSViv (req->result)));	159	XPUSHs (sv_2mortal (newSViv (req->result)));
219		160
220	if (req->type == REQ_OPEN)	161	if (req->type == REQ_OPEN)
221	{	162	{
224		165
225	PUTBACK;	166	PUTBACK;
226	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);	167	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);
227	SPAGAIN;	168	SPAGAIN;
228		169
229	fh = POPs;	170	fh = SvREFCNT_inc (POPs);
230		171
231	PUSHMARK (SP);	172	PUSHMARK (SP);
232	XPUSHs (fh);	173	XPUSHs (sv_2mortal (fh));
233	}	174	}
234		175
		176	if (SvOK (req->callback))
		177	{
235	PUTBACK;	178	PUTBACK;
236	call_sv (req->callback, G_VOID \| G_EVAL);	179	call_sv (req->callback, G_VOID \| G_EVAL);
237	SPAGAIN;	180	SPAGAIN;
		181
		182	if (SvTRUE (ERRSV))
		183	{
		184	free_req (req);
		185	croak (0);
		186	}
238		187	}
239	if (req->callback)	188
240	SvREFCNT_dec (req->callback);	189	LEAVE;
241		190
242	errno = errorno;	191	errno = errorno;
243	count++;	192	count++;
244	}	193	}
245		194
246	Safefree (req);	195	free_req (req);
247	}	196	}
248
249	if (qs)
250	send_reqs ();
251		197
252	return count;	198	return count;
253	}	199	}
		200
		201	static void aio_proc(void arg);
		202
		203	static void
		204	start_thread (void)
		205	{
		206	sigset_t fullsigset, oldsigset;
		207	pthread_t tid;
		208	pthread_attr_t attr;
		209
		210	pthread_attr_init (&attr);
		211	pthread_attr_setstacksize (&attr, STACKSIZE);
		212	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
		213
		214	sigfillset (&fullsigset);
		215	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
		216
		217	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
		218	started++;
		219
		220	sigprocmask (SIG_SETMASK, &oldsigset, 0);
		221	}
		222
		223	static void
		224	send_req (aio_req req)
		225	{
		226	nreqs++;
		227
		228	pthread_mutex_lock (&reqlock);
		229
		230	req->next = 0;
		231
		232	if (reqe)
		233	{
		234	reqe->next = req;
		235	reqe = req;
		236	}
		237	else
		238	reqe = reqs = req;
		239
		240	pthread_cond_signal (&reqwait);
		241	pthread_mutex_unlock (&reqlock);
		242
		243	if (nreqs > max_outstanding)
		244	for (;;)
		245	{
		246	poll_cb ();
		247
		248	if (nreqs <= max_outstanding)
		249	break;
		250
		251	poll_wait ();
		252	}
		253	}
		254
		255	static void
		256	end_thread (void)
		257	{
		258	aio_req req;
		259	Newz (0, req, 1, aio_cb);
		260	req->type = REQ_QUIT;
		261
		262	send_req (req);
		263	}
		264
		265	static void min_parallel (int nthreads)
		266	{
		267	while (nthreads > started)
		268	start_thread ();
		269	}
		270
		271	static void max_parallel (int nthreads)
		272	{
		273	int cur = started;
		274
		275	while (cur > nthreads)
		276	{
		277	end_thread ();
		278	cur--;
		279	}
		280
		281	while (started > nthreads)
		282	{
		283	poll_wait ();
		284	poll_cb ();
		285	}
		286	}
		287
		288	static void create_pipe ()
		289	{
		290	if (pipe (respipe))
		291	croak ("unable to initialize result pipe");
		292
		293	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
		294	croak ("cannot set result pipe to nonblocking mode");
		295
		296	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
		297	croak ("cannot set result pipe to nonblocking mode");
		298	}
		299
		300	static void atfork_prepare (void)
		301	{
		302	pthread_mutex_lock (&reqlock);
		303	pthread_mutex_lock (&reslock);
		304	}
		305
		306	static void atfork_parent (void)
		307	{
		308	pthread_mutex_unlock (&reslock);
		309	pthread_mutex_unlock (&reqlock);
		310	}
		311
		312	static void atfork_child (void)
		313	{
		314	aio_req prv;
		315
		316	int restart = started;
		317	started = 0;
		318
		319	while (reqs)
		320	{
		321	prv = reqs;
		322	reqs = prv->next;
		323	free_req (prv);
		324	}
		325
		326	reqs = reqe = 0;
		327
		328	while (ress)
		329	{
		330	prv = ress;
		331	ress = prv->next;
		332	free_req (prv);
		333	}
		334
		335	ress = rese = 0;
		336
		337	atfork_parent ();
		338
		339	min_parallel (restart);
		340	}
		341
		342	/*****************************************************************************/
		343	/* work around various missing functions */
		344
		345	#if !HAVE_PREADWRITE
		346	# define pread aio_pread
		347	# define pwrite aio_pwrite
		348
		349	/*
		350	* make our pread/pwrite safe against themselves, but not against
		351	* normal read/write by using a mutex. slows down execution a lot,
		352	* but that's your problem, not mine.
		353	*/
		354	static pthread_mutex_t iolock = PTHREAD_MUTEX_INITIALIZER;
		355
		356	static ssize_t
		357	pread (int fd, void *buf, size_t count, off_t offset)
		358	{
		359	ssize_t res;
		360	off_t ooffset;
		361
		362	pthread_mutex_lock (&iolock);
		363	ooffset = lseek (fd, 0, SEEK_CUR);
		364	lseek (fd, offset, SEEK_SET);
		365	res = read (fd, buf, count);
		366	lseek (fd, ooffset, SEEK_SET);
		367	pthread_mutex_unlock (&iolock);
		368
		369	return res;
		370	}
		371
		372	static ssize_t
		373	pwrite (int fd, void *buf, size_t count, off_t offset)
		374	{
		375	ssize_t res;
		376	off_t ooffset;
		377
		378	pthread_mutex_lock (&iolock);
		379	ooffset = lseek (fd, 0, SEEK_CUR);
		380	lseek (fd, offset, SEEK_SET);
		381	res = write (fd, buf, count);
		382	lseek (fd, offset, SEEK_SET);
		383	pthread_mutex_unlock (&iolock);
		384
		385	return res;
		386	}
		387	#endif
		388
		389	#if !HAVE_FDATASYNC
		390	# define fdatasync fsync
		391	#endif
		392
		393	#if !HAVE_READAHEAD
		394	# define readahead aio_readahead
		395
		396	static char readahead_buf[4096];
		397
		398	static ssize_t
		399	readahead (int fd, off_t offset, size_t count)
		400	{
		401	while (count > 0)
		402	{
		403	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
		404
		405	pread (fd, readahead_buf, len, offset);
		406	offset += len;
		407	count -= len;
		408	}
		409
		410	errno = 0;
		411	}
		412	#endif
		413
		414	/*****************************************************************************/
254		415
255	static void *	416	static void *
256	aio_proc (void *thr_arg)	417	aio_proc (void *thr_arg)
257	{	418	{
258	aio_req req;	419	aio_req req;
		420	int type;
259		421
260	/* then loop */	422	do
261	while (read (reqpipe[0], (void *)&req, sizeof (req)) == sizeof (req))
262	{	423	{
		424	pthread_mutex_lock (&reqlock);
		425
		426	for (;;)
		427	{
		428	req = reqs;
		429
		430	if (reqs)
		431	{
		432	reqs = reqs->next;
		433	if (!reqs) reqe = 0;
		434	}
		435
		436	if (req)
		437	break;
		438
		439	pthread_cond_wait (&reqwait, &reqlock);
		440	}
		441
		442	pthread_mutex_unlock (&reqlock);
		443
263	errno = 0; /* strictly unnecessary */	444	errno = 0; /* strictly unnecessary */
264		445
		446	type = req->type;
		447
265	switch (req->type)	448	switch (type)
266	{	449	{
267	case REQ_READ: req->result = pread64 (req->fd, req->dataptr, req->length, req->offset); break;	450	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;	451	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
269	#if SYS_readahead	452
270	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	453	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		454
275	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	455	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
276	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	456	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
277	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	457	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
278		458
279	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;	459	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
280	case REQ_CLOSE: req->result = close (req->fd); break;	460	case REQ_CLOSE: req->result = close (req->fd); break;
281	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	461	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
		462	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
		463	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
282		464
		465	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
283	case REQ_FSYNC: req->result = fsync (req->fd); break;	466	case REQ_FSYNC: req->result = fsync (req->fd); break;
284	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
285		467
286	case REQ_QUIT:	468	case REQ_QUIT:
287	write (respipe[1], (void *)&req, sizeof (req));	469	break;
288	return 0;
289		470
290	default:	471	default:
291	req->result = ENOSYS;	472	req->result = ENOSYS;
292	break;	473	break;
293	}	474	}
294		475
295	req->errorno = errno;	476	req->errorno = errno;
296	write (respipe[1], (void *)&req, sizeof (req));	477
		478	pthread_mutex_lock (&reslock);
		479
		480	req->next = 0;
		481
		482	if (rese)
		483	{
		484	rese->next = req;
		485	rese = req;
		486	}
		487	else
		488	{
		489	rese = ress = req;
		490
		491	/* write a dummy byte to the pipe so fh becomes ready */
		492	write (respipe [1], &respipe, 1);
		493	}
		494
		495	pthread_mutex_unlock (&reslock);
297	}	496	}
		497	while (type != REQ_QUIT);
298		498
299	return 0;	499	return 0;
300	}	500	}
301		501
		502	#define dREQ \
		503	aio_req req; \
		504	\
		505	if (SvOK (callback) && !SvROK (callback)) \
		506	croak ("clalback must be undef or of reference type"); \
		507	\
		508	Newz (0, req, 1, aio_cb); \
		509	if (!req) \
		510	croak ("out of memory during aio_req allocation"); \
		511	\
		512	req->callback = newSVsv (callback);
		513
302	MODULE = IO::AIO PACKAGE = IO::AIO	514	MODULE = IO::AIO PACKAGE = IO::AIO
303		515
		516	PROTOTYPES: ENABLE
		517
304	BOOT:	518	BOOT:
305	{	519	{
306	if (pipe (reqpipe) \|\| pipe (respipe))	520	create_pipe ();
307	croak ("unable to initialize request or result pipe");	521	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
308
309	if (fcntl (reqpipe[1], F_SETFL, O_NONBLOCK))
310	croak ("cannot set result pipe to nonblocking mode");
311
312	if (fcntl (respipe[0], F_SETFL, O_NONBLOCK))
313	croak ("cannot set result pipe to nonblocking mode");
314	}	522	}
315		523
316	void	524	void
317	min_parallel(nthreads)	525	min_parallel(nthreads)
318	int nthreads	526	int nthreads
319	PROTOTYPE: $	527	PROTOTYPE: $
320	CODE:
321	while (nthreads > started)
322	start_thread ();
323		528
324	void	529	void
325	max_parallel(nthreads)	530	max_parallel(nthreads)
326	int nthreads	531	int nthreads
327	PROTOTYPE: $	532	PROTOTYPE: $
		533
		534	int
		535	max_outstanding(nreqs)
		536	int nreqs
		537	PROTOTYPE: $
328	CODE:	538	CODE:
329	{	539	RETVAL = max_outstanding;
330	int cur = started;	540	max_outstanding = nreqs;
331	while (cur > nthreads)
332	{
333	end_thread ();
334	cur--;
335	}
336		541
337	while (started > nthreads)
338	{
339	poll_wait ();
340	poll_cb (aTHX);
341	}
342	}
343
344	void	542	void
345	aio_open(pathname,flags,mode,callback)	543	aio_open(pathname,flags,mode,callback=&PL_sv_undef)
346	SV * pathname	544	SV * pathname
347	int flags	545	int flags
348	int mode	546	int mode
349	SV * callback	547	SV * callback
350	PROTOTYPE: $$$$	548	PROTOTYPE: $$$;$
351	CODE:	549	CODE:
352	{	550	{
353	aio_req req;	551	dREQ;
354
355	Newz (0, req, 1, aio_cb);
356
357	if (!req)
358	croak ("out of memory during aio_req allocation");
359		552
360	req->type = REQ_OPEN;	553	req->type = REQ_OPEN;
361	req->data = newSVsv (pathname);	554	req->data = newSVsv (pathname);
362	req->dataptr = SvPV_nolen (req->data);	555	req->dataptr = SvPVbyte_nolen (req->data);
363	req->fd = flags;	556	req->fd = flags;
364	req->mode = mode;	557	req->mode = mode;
365	req->callback = SvREFCNT_inc (callback);
366		558
367	send_req (req);	559	send_req (req);
368	}	560	}
369		561
370	void	562	void
371	aio_close(fh,callback)	563	aio_close(fh,callback=&PL_sv_undef)
372	InputStream fh	564	SV * fh
373	SV * callback	565	SV * callback
374	PROTOTYPE: $$	566	PROTOTYPE: $;$
375	ALIAS:	567	ALIAS:
376	aio_close = REQ_CLOSE	568	aio_close = REQ_CLOSE
377	aio_fsync = REQ_FSYNC	569	aio_fsync = REQ_FSYNC
378	aio_fdatasync = REQ_FDATASYNC	570	aio_fdatasync = REQ_FDATASYNC
379	CODE:	571	CODE:
380	{	572	{
		573	dREQ;
		574
		575	req->type = ix;
		576	req->fh = newSVsv (fh);
		577	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
		578
		579	send_req (req);
		580	}
		581
		582	void
		583	aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
		584	SV * fh
		585	UV offset
		586	IV length
		587	SV * data
		588	IV dataoffset
		589	SV * callback
		590	ALIAS:
		591	aio_read = REQ_READ
		592	aio_write = REQ_WRITE
		593	PROTOTYPE: $$$$$;$
		594	CODE:
		595	{
381	aio_req req;	596	aio_req req;
		597	STRLEN svlen;
		598	char *svptr = SvPVbyte (data, svlen);
382		599
383	Newz (0, req, 1, aio_cb);	600	SvUPGRADE (data, SVt_PV);
		601	SvPOK_on (data);
384		602
385	if (!req)	603	if (dataoffset < 0)
386	croak ("out of memory during aio_req allocation");	604	dataoffset += svlen;
387		605
388	req->type = ix;	606	if (dataoffset < 0 \|\| dataoffset > svlen)
389	req->fd = PerlIO_fileno (fh);	607	croak ("data offset outside of string");
390	req->callback = SvREFCNT_inc (callback);
391		608
392	send_req (req);	609	if (ix == REQ_WRITE)
393	}	610	{
394		611	/* write: check length and adjust. */
395	void	612	if (length < 0 \|\| length + dataoffset > svlen)
396	aio_read(fh,offset,length,data,dataoffset,callback)	613	length = svlen - dataoffset;
397	InputStream fh	614	}
398	UV offset	615	else
399	IV length	616	{
400	SV * data	617	/* read: grow scalar as necessary */
401	IV dataoffset	618	svptr = SvGROW (data, length + dataoffset);
402	SV * callback	619	}
403	PROTOTYPE: $$$$$$
404	CODE:
405	read_write (aTHX_ 0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
406
407	void
408	aio_write(fh,offset,length,data,dataoffset,callback)
409	OutputStream fh
410	UV offset
411	IV length
412	SV * data
413	IV dataoffset
414	SV * callback
415	PROTOTYPE: $$$$$$
416	CODE:
417	read_write (aTHX_ 1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
418
419	void
420	aio_readahead(fh,offset,length,callback)
421	InputStream fh
422	UV offset
423	IV length
424	SV * callback
425	PROTOTYPE: $$$$
426	CODE:
427	{
428	aio_req req;
429		620
430	if (length < 0)	621	if (length < 0)
431	croak ("length must not be negative");	622	croak ("length must not be negative");
432		623
433	Newz (0, req, 1, aio_cb);	624	{
		625	dREQ;
434		626
435	if (!req)	627	req->type = ix;
436	croak ("out of memory during aio_req allocation");	628	req->fh = newSVsv (fh);
		629	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
		630	: IoOFP (sv_2io (fh)));
		631	req->offset = offset;
		632	req->length = length;
		633	req->data = SvREFCNT_inc (data);
		634	req->dataptr = (char *)svptr + dataoffset;
		635
		636	if (!SvREADONLY (data))
		637	{
		638	SvREADONLY_on (data);
		639	req->data2ptr = (void *)data;
		640	}
		641
		642	send_req (req);
		643	}
		644	}
		645
		646	void
		647	aio_readahead(fh,offset,length,callback=&PL_sv_undef)
		648	SV * fh
		649	UV offset
		650	IV length
		651	SV * callback
		652	PROTOTYPE: $$$;$
		653	CODE:
		654	{
		655	dREQ;
437		656
438	req->type = REQ_READAHEAD;	657	req->type = REQ_READAHEAD;
		658	req->fh = newSVsv (fh);
439	req->fd = PerlIO_fileno (fh);	659	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
440	req->offset = offset;	660	req->offset = offset;
441	req->length = length;	661	req->length = length;
442	req->callback = SvREFCNT_inc (callback);
443		662
444	send_req (req);	663	send_req (req);
445	}	664	}
446		665
447	void	666	void
448	aio_stat(fh_or_path,callback)	667	aio_stat(fh_or_path,callback=&PL_sv_undef)
449	SV * fh_or_path	668	SV * fh_or_path
450	SV * callback	669	SV * callback
451	PROTOTYPE: $$
452	ALIAS:	670	ALIAS:
		671	aio_stat = REQ_STAT
453	aio_lstat = 1	672	aio_lstat = REQ_LSTAT
454	CODE:	673	CODE:
455	{	674	{
456	aio_req req;	675	dREQ;
457
458	Newz (0, req, 1, aio_cb);
459
460	if (!req)
461	croak ("out of memory during aio_req allocation");
462		676
463	New (0, req->statdata, 1, Stat_t);	677	New (0, req->statdata, 1, Stat_t);
464
465	if (!req->statdata)	678	if (!req->statdata)
		679	{
		680	free_req (req);
466	croak ("out of memory during aio_req->statdata allocation");	681	croak ("out of memory during aio_req->statdata allocation");
		682	}
467		683
468	if (SvPOK (fh_or_path))	684	if (SvPOK (fh_or_path))
469	{	685	{
470	req->type = ix ? REQ_LSTAT : REQ_STAT;	686	req->type = ix;
471	req->data = newSVsv (fh_or_path);	687	req->data = newSVsv (fh_or_path);
472	req->dataptr = SvPV_nolen (req->data);	688	req->dataptr = SvPVbyte_nolen (req->data);
473	}	689	}
474	else	690	else
475	{	691	{
476	req->type = REQ_FSTAT;	692	req->type = REQ_FSTAT;
		693	req->fh = newSVsv (fh_or_path);
477	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	694	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
478	}	695	}
479		696
480	req->callback = SvREFCNT_inc (callback);
481
482	send_req (req);	697	send_req (req);
483	}	698	}
484		699
485	void	700	void
486	aio_unlink(pathname,callback)	701	aio_unlink(pathname,callback=&PL_sv_undef)
487	SV * pathname	702	SV * pathname
488	SV * callback	703	SV * callback
489	PROTOTYPE: $$	704	ALIAS:
		705	aio_unlink = REQ_UNLINK
		706	aio_rmdir = REQ_RMDIR
490	CODE:	707	CODE:
491	{	708	{
492	aio_req req;	709	dREQ;
493		710
494	Newz (0, req, 1, aio_cb);	711	req->type = ix;
495
496	if (!req)
497	croak ("out of memory during aio_req allocation");
498
499	req->type = REQ_UNLINK;
500	req->data = newSVsv (pathname);	712	req->data = newSVsv (pathname);
501	req->dataptr = SvPV_nolen (req->data);	713	req->dataptr = SvPVbyte_nolen (req->data);
502	req->callback = SvREFCNT_inc (callback);
503		714
504	send_req (req);	715	send_req (req);
505	}	716	}
		717
		718	void
		719	aio_symlink(oldpath,newpath,callback=&PL_sv_undef)
		720	SV * oldpath
		721	SV * newpath
		722	SV * callback
		723	CODE:
		724	{
		725	dREQ;
		726
		727	req->type = REQ_SYMLINK;
		728	req->fh = newSVsv (oldpath);
		729	req->data2ptr = SvPVbyte_nolen (req->fh);
		730	req->data = newSVsv (newpath);
		731	req->dataptr = SvPVbyte_nolen (req->data);
		732
		733	send_req (req);
		734	}
		735
		736	void
		737	flush()
		738	PROTOTYPE:
		739	CODE:
		740	while (nreqs)
		741	{
		742	poll_wait ();
		743	poll_cb ();
		744	}
		745
		746	void
		747	poll()
		748	PROTOTYPE:
		749	CODE:
		750	if (nreqs)
		751	{
		752	poll_wait ();
		753	poll_cb ();
		754	}
506		755
507	int	756	int
508	poll_fileno()	757	poll_fileno()
509	PROTOTYPE:	758	PROTOTYPE:
510	CODE:	759	CODE:
511	RETVAL = respipe[0];	760	RETVAL = respipe [0];
512	OUTPUT:	761	OUTPUT:
513	RETVAL	762	RETVAL
514		763
515	int	764	int
516	poll_cb(...)	765	poll_cb(...)
517	PROTOTYPE:	766	PROTOTYPE:
518	CODE:	767	CODE:
519	RETVAL = poll_cb (aTHX);	768	RETVAL = poll_cb ();
520	OUTPUT:	769	OUTPUT:
521	RETVAL	770	RETVAL
522		771
523	void	772	void
524	poll_wait()	773	poll_wait()
525	PROTOTYPE:	774	PROTOTYPE:
526	CODE:	775	CODE:
		776	if (nreqs)
527	poll_wait ();	777	poll_wait ();
528		778
529	int	779	int
530	nreqs()	780	nreqs()
531	PROTOTYPE:	781	PROTOTYPE:
532	CODE:	782	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 1.28 by root, Wed Aug 17 05:06:59 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 1.28 by root, Wed Aug 17 05:06:59 2005 UTC