[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 1.29 by root, Wed Aug 17 06:12:10 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)));
		160
		161	if (req->type == REQ_OPEN)
		162	{
		163	/* convert fd to fh */
		164	SV *fh;
		165
219	PUTBACK;	166	PUTBACK;
220	call_sv (req->callback, G_VOID);	167	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);
221	SPAGAIN;	168	SPAGAIN;
		169
		170	fh = SvREFCNT_inc (POPs);
		171
		172	PUSHMARK (SP);
		173	XPUSHs (sv_2mortal (fh));
222		174	}
		175
223	if (req->callback)	176	if (SvOK (req->callback))
224	SvREFCNT_dec (req->callback);	177	{
		178	PUTBACK;
		179	call_sv (req->callback, G_VOID \| G_EVAL);
		180	SPAGAIN;
		181
		182	if (SvTRUE (ERRSV))
		183	{
		184	free_req (req);
		185	croak (0);
		186	}
		187	}
		188
		189	LEAVE;
225		190
226	errno = errorno;	191	errno = errorno;
227	count++;	192	count++;
228	}	193	}
229		194
230	Safefree (req);	195	free_req (req);
231	}	196	}
232
233	if (qs)
234	send_reqs ();
235		197
236	return count;	198	return count;
237	}	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	close (respipe [0]);
		338	close (respipe [1]);
		339	create_pipe ();
		340
		341	atfork_parent ();
		342
		343	min_parallel (restart);
		344	}
		345
		346	/*****************************************************************************/
		347	/* work around various missing functions */
		348
		349	#if !HAVE_PREADWRITE
		350	# define pread aio_pread
		351	# define pwrite aio_pwrite
		352
		353	/*
		354	* make our pread/pwrite safe against themselves, but not against
		355	* normal read/write by using a mutex. slows down execution a lot,
		356	* but that's your problem, not mine.
		357	*/
		358	static pthread_mutex_t iolock = PTHREAD_MUTEX_INITIALIZER;
		359
		360	static ssize_t
		361	pread (int fd, void *buf, size_t count, off_t offset)
		362	{
		363	ssize_t res;
		364	off_t ooffset;
		365
		366	pthread_mutex_lock (&iolock);
		367	ooffset = lseek (fd, 0, SEEK_CUR);
		368	lseek (fd, offset, SEEK_SET);
		369	res = read (fd, buf, count);
		370	lseek (fd, ooffset, SEEK_SET);
		371	pthread_mutex_unlock (&iolock);
		372
		373	return res;
		374	}
		375
		376	static ssize_t
		377	pwrite (int fd, void *buf, size_t count, off_t offset)
		378	{
		379	ssize_t res;
		380	off_t ooffset;
		381
		382	pthread_mutex_lock (&iolock);
		383	ooffset = lseek (fd, 0, SEEK_CUR);
		384	lseek (fd, offset, SEEK_SET);
		385	res = write (fd, buf, count);
		386	lseek (fd, offset, SEEK_SET);
		387	pthread_mutex_unlock (&iolock);
		388
		389	return res;
		390	}
		391	#endif
		392
		393	#if !HAVE_FDATASYNC
		394	# define fdatasync fsync
		395	#endif
		396
		397	#if !HAVE_READAHEAD
		398	# define readahead aio_readahead
		399
		400	static char readahead_buf[4096];
		401
		402	static ssize_t
		403	readahead (int fd, off_t offset, size_t count)
		404	{
		405	while (count > 0)
		406	{
		407	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
		408
		409	pread (fd, readahead_buf, len, offset);
		410	offset += len;
		411	count -= len;
		412	}
		413
		414	errno = 0;
		415	}
		416	#endif
		417
		418	/*****************************************************************************/
238		419
239	static void *	420	static void *
240	aio_proc (void *thr_arg)	421	aio_proc (void *thr_arg)
241	{	422	{
242	aio_req req;	423	aio_req req;
		424	int type;
243		425
244	/* then loop */	426	do
245	while (read (reqpipe[0], (void *)&req, sizeof (req)) == sizeof (req))
246	{	427	{
		428	pthread_mutex_lock (&reqlock);
		429
		430	for (;;)
		431	{
		432	req = reqs;
		433
		434	if (reqs)
		435	{
		436	reqs = reqs->next;
		437	if (!reqs) reqe = 0;
		438	}
		439
		440	if (req)
		441	break;
		442
		443	pthread_cond_wait (&reqwait, &reqlock);
		444	}
		445
		446	pthread_mutex_unlock (&reqlock);
		447
247	errno = 0; /* strictly unnecessary */	448	errno = 0; /* strictly unnecessary */
248		449
		450	type = req->type;
		451
249	switch (req->type)	452	switch (type)
250	{	453	{
251	case REQ_READ: req->result = pread64 (req->fd, req->dataptr, req->length, req->offset); break;	454	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;	455	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
253	#if SYS_readahead	456
254	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	457	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		458
259	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	459	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
260	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	460	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
261	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	461	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
262		462
263	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;	463	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
264	case REQ_CLOSE: req->result = close (req->fd); break;	464	case REQ_CLOSE: req->result = close (req->fd); break;
265	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	465	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
		466	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
		467	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
266		468
		469	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
267	case REQ_FSYNC: req->result = fsync (req->fd); break;	470	case REQ_FSYNC: req->result = fsync (req->fd); break;
268	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
269		471
270	case REQ_QUIT:	472	case REQ_QUIT:
271	write (respipe[1], (void *)&req, sizeof (req));	473	break;
272	return 0;
273		474
274	default:	475	default:
275	req->result = ENOSYS;	476	req->result = ENOSYS;
276	break;	477	break;
277	}	478	}
278		479
279	req->errorno = errno;	480	req->errorno = errno;
280	write (respipe[1], (void *)&req, sizeof (req));	481
		482	pthread_mutex_lock (&reslock);
		483
		484	req->next = 0;
		485
		486	if (rese)
		487	{
		488	rese->next = req;
		489	rese = req;
		490	}
		491	else
		492	{
		493	rese = ress = req;
		494
		495	/* write a dummy byte to the pipe so fh becomes ready */
		496	write (respipe [1], &respipe, 1);
		497	}
		498
		499	pthread_mutex_unlock (&reslock);
281	}	500	}
		501	while (type != REQ_QUIT);
282		502
283	return 0;	503	return 0;
284	}	504	}
285		505
		506	#define dREQ \
		507	aio_req req; \
		508	\
		509	if (SvOK (callback) && !SvROK (callback)) \
		510	croak ("clalback must be undef or of reference type"); \
		511	\
		512	Newz (0, req, 1, aio_cb); \
		513	if (!req) \
		514	croak ("out of memory during aio_req allocation"); \
		515	\
		516	req->callback = newSVsv (callback);
		517
286	MODULE = IO::AIO PACKAGE = IO::AIO	518	MODULE = IO::AIO PACKAGE = IO::AIO
287		519
		520	PROTOTYPES: ENABLE
		521
288	BOOT:	522	BOOT:
289	{	523	{
290	if (pipe (reqpipe) \|\| pipe (respipe))	524	create_pipe ();
291	croak ("unable to initialize request or result pipe");	525	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	}	526	}
299		527
300	void	528	void
301	min_parallel(nthreads)	529	min_parallel(nthreads)
302	int nthreads	530	int nthreads
303	PROTOTYPE: $	531	PROTOTYPE: $
304	CODE:
305	while (nthreads > started)
306	start_thread ();
307		532
308	void	533	void
309	max_parallel(nthreads)	534	max_parallel(nthreads)
310	int nthreads	535	int nthreads
311	PROTOTYPE: $	536	PROTOTYPE: $
		537
		538	int
		539	max_outstanding(nreqs)
		540	int nreqs
		541	PROTOTYPE: $
312	CODE:	542	CODE:
313	{	543	RETVAL = max_outstanding;
314	int cur = started;	544	max_outstanding = nreqs;
315	while (cur > nthreads)
316	{
317	end_thread ();
318	cur--;
319	}
320		545
321	while (started > nthreads)
322	{
323	poll_wait ();
324	poll_cb (aTHX);
325	}
326	}
327
328	void	546	void
329	aio_open(pathname,flags,mode,callback)	547	aio_open(pathname,flags,mode,callback=&PL_sv_undef)
330	SV * pathname	548	SV * pathname
331	int flags	549	int flags
332	int mode	550	int mode
333	SV * callback	551	SV * callback
334	PROTOTYPE: $$$$	552	PROTOTYPE: $$$;$
335	CODE:	553	CODE:
336	{	554	{
337	aio_req req;	555	dREQ;
338
339	Newz (0, req, 1, aio_cb);
340
341	if (!req)
342	croak ("out of memory during aio_req allocation");
343		556
344	req->type = REQ_OPEN;	557	req->type = REQ_OPEN;
345	req->data = newSVsv (pathname);	558	req->data = newSVsv (pathname);
346	req->dataptr = SvPV_nolen (req->data);	559	req->dataptr = SvPVbyte_nolen (req->data);
347	req->fd = flags;	560	req->fd = flags;
348	req->mode = mode;	561	req->mode = mode;
349	req->callback = SvREFCNT_inc (callback);
350		562
351	send_req (req);	563	send_req (req);
352	}	564	}
353		565
354	void	566	void
355	aio_close(fh,callback)	567	aio_close(fh,callback=&PL_sv_undef)
356	InputStream fh	568	SV * fh
357	SV * callback	569	SV * callback
358	PROTOTYPE: $$	570	PROTOTYPE: $;$
359	ALIAS:	571	ALIAS:
360	aio_close = REQ_CLOSE	572	aio_close = REQ_CLOSE
361	aio_fsync = REQ_FSYNC	573	aio_fsync = REQ_FSYNC
362	aio_fdatasync = REQ_FDATASYNC	574	aio_fdatasync = REQ_FDATASYNC
363	CODE:	575	CODE:
364	{	576	{
		577	dREQ;
		578
		579	req->type = ix;
		580	req->fh = newSVsv (fh);
		581	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
		582
		583	send_req (req);
		584	}
		585
		586	void
		587	aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
		588	SV * fh
		589	UV offset
		590	IV length
		591	SV * data
		592	IV dataoffset
		593	SV * callback
		594	ALIAS:
		595	aio_read = REQ_READ
		596	aio_write = REQ_WRITE
		597	PROTOTYPE: $$$$$;$
		598	CODE:
		599	{
365	aio_req req;	600	aio_req req;
		601	STRLEN svlen;
		602	char *svptr = SvPVbyte (data, svlen);
366		603
367	Newz (0, req, 1, aio_cb);	604	SvUPGRADE (data, SVt_PV);
		605	SvPOK_on (data);
368		606
369	if (!req)	607	if (dataoffset < 0)
370	croak ("out of memory during aio_req allocation");	608	dataoffset += svlen;
371		609
372	req->type = ix;	610	if (dataoffset < 0 \|\| dataoffset > svlen)
373	req->fd = PerlIO_fileno (fh);	611	croak ("data offset outside of string");
374	req->callback = SvREFCNT_inc (callback);
375		612
376	send_req (req);	613	if (ix == REQ_WRITE)
377	}	614	{
378		615	/* write: check length and adjust. */
379	void	616	if (length < 0 \|\| length + dataoffset > svlen)
380	aio_read(fh,offset,length,data,dataoffset,callback)	617	length = svlen - dataoffset;
381	InputStream fh	618	}
382	UV offset	619	else
383	IV length	620	{
384	SV * data	621	/* read: grow scalar as necessary */
385	IV dataoffset	622	svptr = SvGROW (data, length + dataoffset);
386	SV * callback	623	}
387	PROTOTYPE: $$$$$$
388	CODE:
389	read_write (aTHX_ 0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
390
391	void
392	aio_write(fh,offset,length,data,dataoffset,callback)
393	OutputStream fh
394	UV offset
395	IV length
396	SV * data
397	IV dataoffset
398	SV * callback
399	PROTOTYPE: $$$$$$
400	CODE:
401	read_write (aTHX_ 1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
402
403	void
404	aio_readahead(fh,offset,length,callback)
405	InputStream fh
406	UV offset
407	IV length
408	SV * callback
409	PROTOTYPE: $$$$
410	CODE:
411	{
412	aio_req req;
413		624
414	if (length < 0)	625	if (length < 0)
415	croak ("length must not be negative");	626	croak ("length must not be negative");
416		627
417	Newz (0, req, 1, aio_cb);	628	{
		629	dREQ;
418		630
419	if (!req)	631	req->type = ix;
420	croak ("out of memory during aio_req allocation");	632	req->fh = newSVsv (fh);
		633	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
		634	: IoOFP (sv_2io (fh)));
		635	req->offset = offset;
		636	req->length = length;
		637	req->data = SvREFCNT_inc (data);
		638	req->dataptr = (char *)svptr + dataoffset;
		639
		640	if (!SvREADONLY (data))
		641	{
		642	SvREADONLY_on (data);
		643	req->data2ptr = (void *)data;
		644	}
		645
		646	send_req (req);
		647	}
		648	}
		649
		650	void
		651	aio_readahead(fh,offset,length,callback=&PL_sv_undef)
		652	SV * fh
		653	UV offset
		654	IV length
		655	SV * callback
		656	PROTOTYPE: $$$;$
		657	CODE:
		658	{
		659	dREQ;
421		660
422	req->type = REQ_READAHEAD;	661	req->type = REQ_READAHEAD;
		662	req->fh = newSVsv (fh);
423	req->fd = PerlIO_fileno (fh);	663	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
424	req->offset = offset;	664	req->offset = offset;
425	req->length = length;	665	req->length = length;
426	req->callback = SvREFCNT_inc (callback);
427		666
428	send_req (req);	667	send_req (req);
429	}	668	}
430		669
431	void	670	void
432	aio_stat(fh_or_path,callback)	671	aio_stat(fh_or_path,callback=&PL_sv_undef)
433	SV * fh_or_path	672	SV * fh_or_path
434	SV * callback	673	SV * callback
435	PROTOTYPE: $$
436	ALIAS:	674	ALIAS:
		675	aio_stat = REQ_STAT
437	aio_lstat = 1	676	aio_lstat = REQ_LSTAT
438	CODE:	677	CODE:
439	{	678	{
440	aio_req req;	679	dREQ;
441
442	Newz (0, req, 1, aio_cb);
443
444	if (!req)
445	croak ("out of memory during aio_req allocation");
446		680
447	New (0, req->statdata, 1, Stat_t);	681	New (0, req->statdata, 1, Stat_t);
448
449	if (!req->statdata)	682	if (!req->statdata)
		683	{
		684	free_req (req);
450	croak ("out of memory during aio_req->statdata allocation");	685	croak ("out of memory during aio_req->statdata allocation");
		686	}
451		687
452	if (SvPOK (fh_or_path))	688	if (SvPOK (fh_or_path))
453	{	689	{
454	req->type = ix ? REQ_LSTAT : REQ_STAT;	690	req->type = ix;
455	req->data = newSVsv (fh_or_path);	691	req->data = newSVsv (fh_or_path);
456	req->dataptr = SvPV_nolen (req->data);	692	req->dataptr = SvPVbyte_nolen (req->data);
457	}	693	}
458	else	694	else
459	{	695	{
460	req->type = REQ_FSTAT;	696	req->type = REQ_FSTAT;
		697	req->fh = newSVsv (fh_or_path);
461	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	698	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
462	}	699	}
463		700
464	req->callback = SvREFCNT_inc (callback);
465
466	send_req (req);	701	send_req (req);
467	}	702	}
468		703
469	void	704	void
470	aio_unlink(pathname,callback)	705	aio_unlink(pathname,callback=&PL_sv_undef)
471	SV * pathname	706	SV * pathname
472	SV * callback	707	SV * callback
473	PROTOTYPE: $$	708	ALIAS:
		709	aio_unlink = REQ_UNLINK
		710	aio_rmdir = REQ_RMDIR
474	CODE:	711	CODE:
475	{	712	{
476	aio_req req;	713	dREQ;
477		714
478	Newz (0, req, 1, aio_cb);	715	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);	716	req->data = newSVsv (pathname);
485	req->dataptr = SvPV_nolen (req->data);	717	req->dataptr = SvPVbyte_nolen (req->data);
486	req->callback = SvREFCNT_inc (callback);
487		718
488	send_req (req);	719	send_req (req);
489	}	720	}
		721
		722	void
		723	aio_symlink(oldpath,newpath,callback=&PL_sv_undef)
		724	SV * oldpath
		725	SV * newpath
		726	SV * callback
		727	CODE:
		728	{
		729	dREQ;
		730
		731	req->type = REQ_SYMLINK;
		732	req->fh = newSVsv (oldpath);
		733	req->data2ptr = SvPVbyte_nolen (req->fh);
		734	req->data = newSVsv (newpath);
		735	req->dataptr = SvPVbyte_nolen (req->data);
		736
		737	send_req (req);
		738	}
		739
		740	void
		741	flush()
		742	PROTOTYPE:
		743	CODE:
		744	while (nreqs)
		745	{
		746	poll_wait ();
		747	poll_cb ();
		748	}
		749
		750	void
		751	poll()
		752	PROTOTYPE:
		753	CODE:
		754	if (nreqs)
		755	{
		756	poll_wait ();
		757	poll_cb ();
		758	}
490		759
491	int	760	int
492	poll_fileno()	761	poll_fileno()
493	PROTOTYPE:	762	PROTOTYPE:
494	CODE:	763	CODE:
495	RETVAL = respipe[0];	764	RETVAL = respipe [0];
496	OUTPUT:	765	OUTPUT:
497	RETVAL	766	RETVAL
498		767
499	int	768	int
500	poll_cb(...)	769	poll_cb(...)
501	PROTOTYPE:	770	PROTOTYPE:
502	CODE:	771	CODE:
503	RETVAL = poll_cb (aTHX);	772	RETVAL = poll_cb ();
504	OUTPUT:	773	OUTPUT:
505	RETVAL	774	RETVAL
506		775
507	void	776	void
508	poll_wait()	777	poll_wait()
509	PROTOTYPE:	778	PROTOTYPE:
510	CODE:	779	CODE:
		780	if (nreqs)
511	poll_wait ();	781	poll_wait ();
512		782
513	int	783	int
514	nreqs()	784	nreqs()
515	PROTOTYPE:	785	PROTOTYPE:
516	CODE:	786	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 1.29 by root, Wed Aug 17 06:12:10 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 1.29 by root, Wed Aug 17 06:12:10 2005 UTC