[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 1.25 by root, Wed Aug 17 03:16:56 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 */
63		71	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		72
173	static void	73	static void
174	poll_wait ()	74	poll_wait ()
175	{	75	{
		76	if (nreqs && !ress)
		77	{
176	fd_set rfd;	78	fd_set rfd;
177	FD_ZERO(&rfd);	79	FD_ZERO(&rfd);
178	FD_SET(respipe[0], &rfd);	80	FD_SET(respipe [0], &rfd);
179		81
180	select (respipe[0] + 1, &rfd, 0, 0, 0);	82	select (respipe [0] + 1, &rfd, 0, 0, 0);
		83	}
181	}	84	}
182		85
183	static int	86	static int
184	poll_cb (pTHX)	87	poll_cb ()
185	{	88	{
186	dSP;	89	dSP;
187	int count = 0;	90	int count = 0;
		91	int do_croak = 0;
188	aio_req req;	92	aio_req req, prv;
189		93
190	while (read (respipe[0], (void *)&req, sizeof (req)) == sizeof (req))	94	pthread_mutex_lock (&reslock);
		95
		96	{
		97	/* read any signals sent by the worker threads */
		98	char buf [32];
		99	while (read (respipe [0], buf, 32) == 32)
		100	;
		101	}
		102
		103	req = ress;
		104	ress = rese = 0;
		105
		106	pthread_mutex_unlock (&reslock);
		107
		108	while (req)
191	{	109	{
192	nreqs--;	110	nreqs--;
193		111
194	if (req->type == REQ_QUIT)	112	if (req->type == REQ_QUIT)
195	started--;	113	started--;
203	+ req->result > 0 ? req->result : 0);	121	+ req->result > 0 ? req->result : 0);
204		122
205	if (req->data)	123	if (req->data)
206	SvREFCNT_dec (req->data);	124	SvREFCNT_dec (req->data);
207		125
		126	if (req->fh)
		127	SvREFCNT_dec (req->fh);
		128
208	if (req->type == REQ_STAT \|\| req->type == REQ_LSTAT \|\| req->type == REQ_FSTAT)	129	if (req->type == REQ_STAT \|\| req->type == REQ_LSTAT \|\| req->type == REQ_FSTAT)
209	{	130	{
210	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	131	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
211	PL_laststatval = req->result;	132	PL_laststatval = req->result;
212	PL_statcache = *(req->statdata);	133	PL_statcache = *(req->statdata);
213		134
214	Safefree (req->statdata);	135	Safefree (req->statdata);
215	}	136	}
216		137
		138	ENTER;
217	PUSHMARK (SP);	139	PUSHMARK (SP);
218	XPUSHs (sv_2mortal (newSViv (req->result)));	140	XPUSHs (sv_2mortal (newSViv (req->result)));
219		141
220	if (req->type == REQ_OPEN)	142	if (req->type == REQ_OPEN)
221	{	143	{
…		…
224		146
225	PUTBACK;	147	PUTBACK;
226	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);	148	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);
227	SPAGAIN;	149	SPAGAIN;
228		150
229	fh = POPs;	151	fh = SvREFCNT_inc (POPs);
230		152
231	PUSHMARK (SP);	153	PUSHMARK (SP);
232	XPUSHs (fh);	154	XPUSHs (sv_2mortal (fh));
233	}	155	}
234		156
		157	if (SvOK (req->callback))
		158	{
235	PUTBACK;	159	PUTBACK;
236	call_sv (req->callback, G_VOID \| G_EVAL);	160	call_sv (req->callback, G_VOID \| G_EVAL);
237	SPAGAIN;	161	SPAGAIN;
		162	}
		163
		164	do_croak = SvTRUE (ERRSV);
		165
		166	LEAVE;
238		167
239	if (req->callback)	168	if (req->callback)
240	SvREFCNT_dec (req->callback);	169	SvREFCNT_dec (req->callback);
241		170
242	errno = errorno;	171	errno = errorno;
243	count++;	172	count++;
244	}	173	}
245		174
		175	prv = req;
		176	req = req->next;
246	Safefree (req);	177	Safefree (prv);
		178
		179	if (do_croak)
		180	croak (0);
247	}	181	}
248		182
249	if (qs)
250	send_reqs ();
251
252	return count;	183	return count;
253	}	184	}
		185
		186	static void aio_proc(void arg);
		187
		188	static void
		189	start_thread (void)
		190	{
		191	sigset_t fullsigset, oldsigset;
		192	pthread_t tid;
		193	pthread_attr_t attr;
		194
		195	pthread_attr_init (&attr);
		196	pthread_attr_setstacksize (&attr, STACKSIZE);
		197	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
		198
		199	sigfillset (&fullsigset);
		200	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
		201
		202	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
		203	started++;
		204
		205	sigprocmask (SIG_SETMASK, &oldsigset, 0);
		206	}
		207
		208	static void
		209	send_req (aio_req req)
		210	{
		211	nreqs++;
		212
		213	pthread_mutex_lock (&reqlock);
		214
		215	req->next = 0;
		216
		217	if (reqe)
		218	{
		219	reqe->next = req;
		220	reqe = req;
		221	}
		222	else
		223	reqe = reqs = req;
		224
		225	pthread_cond_signal (&reqwait);
		226	pthread_mutex_unlock (&reqlock);
		227
		228	while (nreqs > max_outstanding)
		229	{
		230	poll_wait ();
		231	poll_cb ();
		232	}
		233	}
		234
		235	static void
		236	end_thread (void)
		237	{
		238	aio_req req;
		239	New (0, req, 1, aio_cb);
		240	req->type = REQ_QUIT;
		241
		242	send_req (req);
		243	}
		244
		245
		246	static void min_parallel (int nthreads)
		247	{
		248	while (nthreads > started)
		249	start_thread ();
		250	}
		251
		252	static void max_parallel (int nthreads)
		253	{
		254	int cur = started;
		255	while (cur > nthreads)
		256	{
		257	end_thread ();
		258	cur--;
		259	}
		260
		261	while (started > nthreads)
		262	{
		263	poll_wait ();
		264	poll_cb ();
		265	}
		266	}
		267
		268	static int fork_started;
		269
		270	static void atfork_prepare (void)
		271	{
		272	int nstarted;
		273
		274	for (;;) {
		275	while (nreqs)
		276	{
		277	poll_wait ();
		278	poll_cb ();
		279	}
		280
		281	nstarted = started;
		282	max_parallel (0);
		283
		284	pthread_mutex_lock (&reqlock);
		285
		286	if (!nreqs && !started)
		287	break;
		288
		289	pthread_mutex_unlock (&reqlock);
		290
		291	min_parallel (fork_started);
		292	}
		293
		294	pthread_mutex_lock (&frklock);
		295	fork_started = nstarted;
		296	pthread_mutex_lock (&reslock);
		297
		298	assert (!started);
		299	assert (!nreqs);
		300	assert (!reqs && !reqe);
		301	assert (!ress && !rese);
		302	}
		303
		304	static void atfork_parent (void)
		305	{
		306	pthread_mutex_unlock (&reslock);
		307	pthread_mutex_unlock (&frklock);
		308	pthread_mutex_unlock (&reqlock);
		309
		310	min_parallel (fork_started);
		311	}
		312
		313	#define atfork_child atfork_parent
		314
		315	/*****************************************************************************/
		316	/* work around various missing functions */
		317
		318	#if !HAVE_PREADWRITE
		319	# define pread aio_pread
		320	# define pwrite aio_pwrite
		321
		322	/*
		323	* make our pread/pwrite safe against themselves, but not against
		324	* normal read/write by using a mutex. slows down execution a lot,
		325	* but that's your problem, not mine.
		326	*/
		327	static pthread_mutex_t iolock = PTHREAD_MUTEX_INITIALIZER;
		328
		329	static ssize_t
		330	pread (int fd, void *buf, size_t count, off_t offset)
		331	{
		332	ssize_t res;
		333	off_t ooffset;
		334
		335	pthread_mutex_lock (&iolock);
		336	ooffset = lseek (fd, 0, SEEK_CUR);
		337	lseek (fd, offset, SEEK_SET);
		338	res = read (fd, buf, count);
		339	lseek (fd, ooffset, SEEK_SET);
		340	pthread_mutex_unlock (&iolock);
		341
		342	return res;
		343	}
		344
		345	static ssize_t
		346	pwrite (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 = write (fd, buf, count);
		355	lseek (fd, offset, SEEK_SET);
		356	pthread_mutex_unlock (&iolock);
		357
		358	return res;
		359	}
		360	#endif
		361
		362	#if !HAVE_FDATASYNC
		363	# define fdatasync fsync
		364	#endif
		365
		366	#if !HAVE_READAHEAD
		367	# define readahead aio_readahead
		368
		369	static char readahead_buf[4096];
		370
		371	static ssize_t
		372	readahead (int fd, off_t offset, size_t count)
		373	{
		374	while (count > 0)
		375	{
		376	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
		377
		378	pread (fd, readahead_buf, len, offset);
		379	offset += len;
		380	count -= len;
		381	}
		382
		383	errno = 0;
		384	}
		385	#endif
		386
		387	/*****************************************************************************/
254		388
255	static void *	389	static void *
256	aio_proc (void *thr_arg)	390	aio_proc (void *thr_arg)
257	{	391	{
258	aio_req req;	392	aio_req req;
		393	int type;
259		394
260	/* then loop */	395	do
261	while (read (reqpipe[0], (void *)&req, sizeof (req)) == sizeof (req))
262	{	396	{
		397	pthread_mutex_lock (&reqlock);
		398
		399	for (;;)
		400	{
		401	req = reqs;
		402
		403	if (reqs)
		404	{
		405	reqs = reqs->next;
		406	if (!reqs) reqe = 0;
		407	}
		408
		409	if (req)
		410	break;
		411
		412	pthread_cond_wait (&reqwait, &reqlock);
		413	}
		414
		415	pthread_mutex_unlock (&reqlock);
		416
263	errno = 0; /* strictly unnecessary */	417	errno = 0; /* strictly unnecessary */
264		418
		419	type = req->type;
		420
265	switch (req->type)	421	switch (type)
266	{	422	{
267	case REQ_READ: req->result = pread64 (req->fd, req->dataptr, req->length, req->offset); break;	423	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;	424	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
269	#if SYS_readahead	425
270	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	426	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		427
275	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	428	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
276	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	429	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
277	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	430	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
278		431
279	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;	432	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
280	case REQ_CLOSE: req->result = close (req->fd); break;	433	case REQ_CLOSE: req->result = close (req->fd); break;
281	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	434	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
		435	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
		436	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
282		437
		438	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
283	case REQ_FSYNC: req->result = fsync (req->fd); break;	439	case REQ_FSYNC: req->result = fsync (req->fd); break;
284	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
285		440
286	case REQ_QUIT:	441	case REQ_QUIT:
287	write (respipe[1], (void *)&req, sizeof (req));	442	break;
288	return 0;
289		443
290	default:	444	default:
291	req->result = ENOSYS;	445	req->result = ENOSYS;
292	break;	446	break;
293	}	447	}
294		448
295	req->errorno = errno;	449	req->errorno = errno;
296	write (respipe[1], (void *)&req, sizeof (req));	450
		451	pthread_mutex_lock (&reslock);
		452
		453	req->next = 0;
		454
		455	if (rese)
		456	{
		457	rese->next = req;
		458	rese = req;
		459	}
		460	else
		461	{
		462	rese = ress = req;
		463
		464	/* write a dummy byte to the pipe so fh becomes ready */
		465	write (respipe [1], &respipe, 1);
		466	}
		467
		468	pthread_mutex_unlock (&reslock);
297	}	469	}
		470	while (type != REQ_QUIT);
298		471
299	return 0;	472	return 0;
300	}	473	}
301		474
		475	#define dREQ \
		476	aio_req req; \
		477	\
		478	if (SvOK (callback) && !SvROK (callback)) \
		479	croak ("clalback must be undef or of reference type"); \
		480	\
		481	Newz (0, req, 1, aio_cb); \
		482	if (!req) \
		483	croak ("out of memory during aio_req allocation"); \
		484	\
		485	req->callback = SvREFCNT_inc (callback);
		486
302	MODULE = IO::AIO PACKAGE = IO::AIO	487	MODULE = IO::AIO PACKAGE = IO::AIO
303		488
		489	PROTOTYPES: ENABLE
		490
304	BOOT:	491	BOOT:
305	{	492	{
306	if (pipe (reqpipe) \|\| pipe (respipe))	493	if (pipe (respipe))
307	croak ("unable to initialize request or result pipe");	494	croak ("unable to initialize result pipe");
308		495
309	if (fcntl (reqpipe[1], F_SETFL, O_NONBLOCK))	496	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
310	croak ("cannot set result pipe to nonblocking mode");	497	croak ("cannot set result pipe to nonblocking mode");
311		498
312	if (fcntl (respipe[0], F_SETFL, O_NONBLOCK))	499	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
313	croak ("cannot set result pipe to nonblocking mode");	500	croak ("cannot set result pipe to nonblocking mode");
		501
		502	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
314	}	503	}
315		504
316	void	505	void
317	min_parallel(nthreads)	506	min_parallel(nthreads)
318	int nthreads	507	int nthreads
319	PROTOTYPE: $	508	PROTOTYPE: $
320	CODE:
321	while (nthreads > started)
322	start_thread ();
323		509
324	void	510	void
325	max_parallel(nthreads)	511	max_parallel(nthreads)
326	int nthreads	512	int nthreads
327	PROTOTYPE: $	513	PROTOTYPE: $
		514
		515	int
		516	max_outstanding(nreqs)
		517	int nreqs
		518	PROTOTYPE: $
328	CODE:	519	CODE:
329	{	520	RETVAL = max_outstanding;
330	int cur = started;	521	max_outstanding = nreqs;
331	while (cur > nthreads)
332	{
333	end_thread ();
334	cur--;
335	}
336		522
337	while (started > nthreads)
338	{
339	poll_wait ();
340	poll_cb (aTHX);
341	}
342	}
343
344	void	523	void
345	aio_open(pathname,flags,mode,callback)	524	aio_open(pathname,flags,mode,callback=&PL_sv_undef)
346	SV * pathname	525	SV * pathname
347	int flags	526	int flags
348	int mode	527	int mode
349	SV * callback	528	SV * callback
350	PROTOTYPE: $$$$	529	PROTOTYPE: $$$;$
351	CODE:	530	CODE:
352	{	531	{
353	aio_req req;	532	dREQ;
354
355	Newz (0, req, 1, aio_cb);
356
357	if (!req)
358	croak ("out of memory during aio_req allocation");
359		533
360	req->type = REQ_OPEN;	534	req->type = REQ_OPEN;
361	req->data = newSVsv (pathname);	535	req->data = newSVsv (pathname);
362	req->dataptr = SvPV_nolen (req->data);	536	req->dataptr = SvPVbyte_nolen (req->data);
363	req->fd = flags;	537	req->fd = flags;
364	req->mode = mode;	538	req->mode = mode;
365	req->callback = SvREFCNT_inc (callback);
366		539
367	send_req (req);	540	send_req (req);
368	}	541	}
369		542
370	void	543	void
371	aio_close(fh,callback)	544	aio_close(fh,callback=&PL_sv_undef)
372	InputStream fh	545	SV * fh
373	SV * callback	546	SV * callback
374	PROTOTYPE: $$	547	PROTOTYPE: $;$
375	ALIAS:	548	ALIAS:
376	aio_close = REQ_CLOSE	549	aio_close = REQ_CLOSE
377	aio_fsync = REQ_FSYNC	550	aio_fsync = REQ_FSYNC
378	aio_fdatasync = REQ_FDATASYNC	551	aio_fdatasync = REQ_FDATASYNC
379	CODE:	552	CODE:
380	{	553	{
		554	dREQ;
		555
		556	req->type = ix;
		557	req->fh = newSVsv (fh);
		558	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
		559
		560	send_req (req);
		561	}
		562
		563	void
		564	aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
		565	SV * fh
		566	UV offset
		567	IV length
		568	SV * data
		569	IV dataoffset
		570	SV * callback
		571	ALIAS:
		572	aio_read = REQ_READ
		573	aio_write = REQ_WRITE
		574	PROTOTYPE: $$$$$;$
		575	CODE:
		576	{
381	aio_req req;	577	aio_req req;
		578	STRLEN svlen;
		579	char *svptr = SvPVbyte (data, svlen);
382		580
383	Newz (0, req, 1, aio_cb);	581	SvUPGRADE (data, SVt_PV);
		582	SvPOK_on (data);
384		583
385	if (!req)	584	if (dataoffset < 0)
386	croak ("out of memory during aio_req allocation");	585	dataoffset += svlen;
387		586
388	req->type = ix;	587	if (dataoffset < 0 \|\| dataoffset > svlen)
389	req->fd = PerlIO_fileno (fh);	588	croak ("data offset outside of string");
390	req->callback = SvREFCNT_inc (callback);
391		589
392	send_req (req);	590	if (ix == REQ_WRITE)
393	}	591	{
394		592	/* write: check length and adjust. */
395	void	593	if (length < 0 \|\| length + dataoffset > svlen)
396	aio_read(fh,offset,length,data,dataoffset,callback)	594	length = svlen - dataoffset;
397	InputStream fh	595	}
398	UV offset	596	else
399	IV length	597	{
400	SV * data	598	/* read: grow scalar as necessary */
401	IV dataoffset	599	svptr = SvGROW (data, length + dataoffset);
402	SV * callback	600	}
403	PROTOTYPE: $$$$$$
404	CODE:
405	read_write (aTHX_ 0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
406
407	void
408	aio_write(fh,offset,length,data,dataoffset,callback)
409	OutputStream fh
410	UV offset
411	IV length
412	SV * data
413	IV dataoffset
414	SV * callback
415	PROTOTYPE: $$$$$$
416	CODE:
417	read_write (aTHX_ 1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
418
419	void
420	aio_readahead(fh,offset,length,callback)
421	InputStream fh
422	UV offset
423	IV length
424	SV * callback
425	PROTOTYPE: $$$$
426	CODE:
427	{
428	aio_req req;
429		601
430	if (length < 0)	602	if (length < 0)
431	croak ("length must not be negative");	603	croak ("length must not be negative");
432		604
433	Newz (0, req, 1, aio_cb);	605	{
		606	dREQ;
434		607
435	if (!req)	608	req->type = ix;
436	croak ("out of memory during aio_req allocation");	609	req->fh = newSVsv (fh);
		610	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
		611	: IoOFP (sv_2io (fh)));
		612	req->offset = offset;
		613	req->length = length;
		614	req->data = SvREFCNT_inc (data);
		615	req->dataptr = (char *)svptr + dataoffset;
		616	req->callback = SvREFCNT_inc (callback);
		617
		618	send_req (req);
		619	}
		620	}
		621
		622	void
		623	aio_readahead(fh,offset,length,callback=&PL_sv_undef)
		624	SV * fh
		625	UV offset
		626	IV length
		627	SV * callback
		628	PROTOTYPE: $$$;$
		629	CODE:
		630	{
		631	dREQ;
437		632
438	req->type = REQ_READAHEAD;	633	req->type = REQ_READAHEAD;
		634	req->fh = newSVsv (fh);
439	req->fd = PerlIO_fileno (fh);	635	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
440	req->offset = offset;	636	req->offset = offset;
441	req->length = length;	637	req->length = length;
442	req->callback = SvREFCNT_inc (callback);
443		638
444	send_req (req);	639	send_req (req);
445	}	640	}
446		641
447	void	642	void
448	aio_stat(fh_or_path,callback)	643	aio_stat(fh_or_path,callback=&PL_sv_undef)
449	SV * fh_or_path	644	SV * fh_or_path
450	SV * callback	645	SV * callback
451	PROTOTYPE: $$
452	ALIAS:	646	ALIAS:
		647	aio_stat = REQ_STAT
453	aio_lstat = 1	648	aio_lstat = REQ_LSTAT
454	CODE:	649	CODE:
455	{	650	{
456	aio_req req;	651	dREQ;
457
458	Newz (0, req, 1, aio_cb);
459
460	if (!req)
461	croak ("out of memory during aio_req allocation");
462		652
463	New (0, req->statdata, 1, Stat_t);	653	New (0, req->statdata, 1, Stat_t);
464
465	if (!req->statdata)	654	if (!req->statdata)
466	croak ("out of memory during aio_req->statdata allocation");	655	croak ("out of memory during aio_req->statdata allocation (sorry, i just leaked memory, too)");
467		656
468	if (SvPOK (fh_or_path))	657	if (SvPOK (fh_or_path))
469	{	658	{
470	req->type = ix ? REQ_LSTAT : REQ_STAT;	659	req->type = ix;
471	req->data = newSVsv (fh_or_path);	660	req->data = newSVsv (fh_or_path);
472	req->dataptr = SvPV_nolen (req->data);	661	req->dataptr = SvPVbyte_nolen (req->data);
473	}	662	}
474	else	663	else
475	{	664	{
476	req->type = REQ_FSTAT;	665	req->type = REQ_FSTAT;
		666	req->fh = newSVsv (fh_or_path);
477	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	667	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
478	}	668	}
479		669
480	req->callback = SvREFCNT_inc (callback);
481
482	send_req (req);	670	send_req (req);
483	}	671	}
484		672
485	void	673	void
486	aio_unlink(pathname,callback)	674	aio_unlink(pathname,callback=&PL_sv_undef)
487	SV * pathname	675	SV * pathname
488	SV * callback	676	SV * callback
489	PROTOTYPE: $$	677	ALIAS:
		678	aio_unlink = REQ_UNLINK
		679	aio_rmdir = REQ_RMDIR
490	CODE:	680	CODE:
491	{	681	{
492	aio_req req;	682	dREQ;
493		683
494	Newz (0, req, 1, aio_cb);	684	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);	685	req->data = newSVsv (pathname);
501	req->dataptr = SvPV_nolen (req->data);	686	req->dataptr = SvPVbyte_nolen (req->data);
502	req->callback = SvREFCNT_inc (callback);
503		687
504	send_req (req);	688	send_req (req);
505	}	689	}
		690
		691	void
		692	aio_symlink(oldpath,newpath,callback=&PL_sv_undef)
		693	SV * oldpath
		694	SV * newpath
		695	SV * callback
		696	CODE:
		697	{
		698	dREQ;
		699
		700	req->type = REQ_SYMLINK;
		701	req->fh = newSVsv (oldpath);
		702	req->data2ptr = SvPVbyte_nolen (req->fh);
		703	req->data = newSVsv (newpath);
		704	req->dataptr = SvPVbyte_nolen (req->data);
		705
		706	send_req (req);
		707	}
		708
		709	void
		710	flush()
		711	PROTOTYPE:
		712	CODE:
		713	while (nreqs)
		714	{
		715	poll_wait ();
		716	poll_cb ();
		717	}
		718
		719	void
		720	poll()
		721	PROTOTYPE:
		722	CODE:
		723	if (nreqs)
		724	{
		725	poll_wait ();
		726	poll_cb ();
		727	}
506		728
507	int	729	int
508	poll_fileno()	730	poll_fileno()
509	PROTOTYPE:	731	PROTOTYPE:
510	CODE:	732	CODE:
511	RETVAL = respipe[0];	733	RETVAL = respipe [0];
512	OUTPUT:	734	OUTPUT:
513	RETVAL	735	RETVAL
514		736
515	int	737	int
516	poll_cb(...)	738	poll_cb(...)
517	PROTOTYPE:	739	PROTOTYPE:
518	CODE:	740	CODE:
519	RETVAL = poll_cb (aTHX);	741	RETVAL = poll_cb ();
520	OUTPUT:	742	OUTPUT:
521	RETVAL	743	RETVAL
522		744
523	void	745	void
524	poll_wait()	746	poll_wait()
525	PROTOTYPE:	747	PROTOTYPE:
526	CODE:	748	CODE:
		749	if (nreqs)
527	poll_wait ();	750	poll_wait ();
528		751
529	int	752	int
530	nreqs()	753	nreqs()
531	PROTOTYPE:	754	PROTOTYPE:
532	CODE:	755	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 1.25 by root, Wed Aug 17 03:16:56 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 1.25 by root, Wed Aug 17 03:16:56 2005 UTC