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

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.3 by root, Sun Jul 10 20:07:11 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 *volatile next;	41	struct aio_cb *volatile next;
40		42
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 respipe [2];	63	static int respipe [2];
61		64
62	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	65	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;
63	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;	66	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
		67	static pthread_mutex_t frklock = PTHREAD_MUTEX_INITIALIZER;
64	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	68	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
65		69
66	static volatile aio_req reqs, reqe; /* queue start, queue end */	70	static volatile aio_req reqs, reqe; /* queue start, queue end */
67	static volatile aio_req ress, rese; /* queue start, queue end */	71	static volatile aio_req ress, rese; /* queue start, queue end */
68		72
69	static void aio_proc(void arg);	73	static void free_req (aio_req req)
70
71	static void
72	start_thread (void)
73	{	74	{
74	sigset_t fullsigset, oldsigset;	75	if (req->data)
75	pthread_t tid;	76	SvREFCNT_dec (req->data);
76	pthread_attr_t attr;
77		77
78	pthread_attr_init (&attr);
79	pthread_attr_setstacksize (&attr, STACKSIZE);
80	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
81
82	sigfillset (&fullsigset);
83	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
84
85	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
86	started++;
87
88	sigprocmask (SIG_SETMASK, &oldsigset, 0);
89	}
90
91	static void
92	send_req (aio_req req)
93	{
94	nreqs++;
95
96	pthread_mutex_lock (&reqlock);
97
98	req->next = 0;
99
100	if (reqe)	78	if (req->fh)
101	{	79	SvREFCNT_dec (req->fh);
102	reqe->next = req;
103	reqe = req;
104	}
105	else
106	reqe = reqs = req;
107		80
108	pthread_cond_signal (&reqwait);	81	if (req->type == REQ_STAT \|\| req->type == REQ_LSTAT \|\| req->type == REQ_FSTAT)
109	pthread_mutex_unlock (&reqlock);	82	Safefree (req->statdata);
110	}
111		83
112	static void	84	if (req->callback)
113	end_thread (void)	85	SvREFCNT_dec (req->callback);
114	{
115	aio_req req;
116	New (0, req, 1, aio_cb);
117	req->type = REQ_QUIT;
118		86
119	send_req (req);	87	Safefree (req);
120	}
121
122	static void
123	read_write (pTHX_
124	int dowrite, int fd, off_t offset, size_t length,
125	SV data, STRLEN dataoffset, SV callback)
126	{
127	aio_req req;
128	STRLEN svlen;
129	char *svptr = SvPV (data, svlen);
130
131	SvUPGRADE (data, SVt_PV);
132	SvPOK_on (data);
133
134	if (dataoffset < 0)
135	dataoffset += svlen;
136
137	if (dataoffset < 0 \|\| dataoffset > svlen)
138	croak ("data offset outside of string");
139
140	if (dowrite)
141	{
142	/* write: check length and adjust. */
143	if (length < 0 \|\| length + dataoffset > svlen)
144	length = svlen - dataoffset;
145	}
146	else
147	{
148	/* read: grow scalar as necessary */
149	svptr = SvGROW (data, length + dataoffset);
150	}
151
152	if (length < 0)
153	croak ("length must not be negative");
154
155	Newz (0, req, 1, aio_cb);
156
157	if (!req)
158	croak ("out of memory during aio_req allocation");
159
160	req->type = dowrite ? REQ_WRITE : REQ_READ;
161	req->fd = fd;
162	req->offset = offset;
163	req->length = length;
164	req->data = SvREFCNT_inc (data);
165	req->dataptr = (char *)svptr + dataoffset;
166	req->callback = SvREFCNT_inc (callback);
167
168	send_req (req);
169	}	88	}
170		89
171	static void	90	static void
172	poll_wait ()	91	poll_wait ()
173	{	92	{
174	if (!nreqs)	93	if (nreqs && !ress)
175	return;	94	{
176
177	fd_set rfd;	95	fd_set rfd;
178	FD_ZERO(&rfd);	96	FD_ZERO(&rfd);
179	FD_SET(respipe [0], &rfd);	97	FD_SET(respipe [0], &rfd);
180		98
181	select (respipe [0] + 1, &rfd, 0, 0, 0);	99	select (respipe [0] + 1, &rfd, 0, 0, 0);
		100	}
182	}	101	}
183		102
184	static int	103	static int
185	poll_cb (pTHX)	104	poll_cb ()
186	{	105	{
187	dSP;	106	dSP;
188	int count = 0;	107	int count = 0;
		108	int do_croak = 0;
189	aio_req req;	109	aio_req req, prv;
190		110
		111	pthread_mutex_lock (&reslock);
		112
191	{	113	{
192	/* read and signals sent by the worker threads */	114	/* read any signals sent by the worker threads */
193	char buf [32];	115	char buf [32];
194	while (read (respipe [0], buf, 32) > 0)	116	while (read (respipe [0], buf, 32) == 32)
195	;	117	;
196	}	118	}
197		119
198	for (;;)
199	{
200	pthread_mutex_lock (&reslock);
201
202	req = ress;	120	req = ress;
		121	ress = rese = 0;
203		122
204	if (ress)
205	{
206	ress = ress->next;
207	if (!ress) rese = 0;
208	}
209
210	pthread_mutex_unlock (&reslock);	123	pthread_mutex_unlock (&reslock);
211		124
212	if (!req)	125	while (req)
213	break;	126	{
214
215	nreqs--;	127	nreqs--;
216		128
217	if (req->type == REQ_QUIT)	129	if (req->type == REQ_QUIT)
218	started--;	130	started--;
219	else	131	else
…		…
223		135
224	if (req->type == REQ_READ)	136	if (req->type == REQ_READ)
225	SvCUR_set (req->data, req->dataoffset	137	SvCUR_set (req->data, req->dataoffset
226	+ req->result > 0 ? req->result : 0);	138	+ req->result > 0 ? req->result : 0);
227		139
228	if (req->data)
229	SvREFCNT_dec (req->data);
230
231	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)
232	{	141	{
233	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	142	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
234	PL_laststatval = req->result;	143	PL_laststatval = req->result;
235	PL_statcache = *(req->statdata);	144	PL_statcache = *(req->statdata);
236
237	Safefree (req->statdata);
238	}	145	}
239		146
		147	ENTER;
240	PUSHMARK (SP);	148	PUSHMARK (SP);
241	XPUSHs (sv_2mortal (newSViv (req->result)));	149	XPUSHs (sv_2mortal (newSViv (req->result)));
242		150
243	if (req->type == REQ_OPEN)	151	if (req->type == REQ_OPEN)
244	{	152	{
…		…
247		155
248	PUTBACK;	156	PUTBACK;
249	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);	157	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);
250	SPAGAIN;	158	SPAGAIN;
251		159
252	fh = POPs;	160	fh = SvREFCNT_inc (POPs);
253		161
254	PUSHMARK (SP);	162	PUSHMARK (SP);
255	XPUSHs (fh);	163	XPUSHs (sv_2mortal (fh));
256	}	164	}
257		165
		166	if (SvOK (req->callback))
		167	{
258	PUTBACK;	168	PUTBACK;
259	call_sv (req->callback, G_VOID \| G_EVAL);	169	call_sv (req->callback, G_VOID \| G_EVAL);
260	SPAGAIN;	170	SPAGAIN;
		171	}
		172
		173	LEAVE;
		174
		175	do_croak = SvTRUE (ERRSV);
261		176
262	if (req->callback)
263	SvREFCNT_dec (req->callback);
264
265	errno = errorno;	177	errno = errorno;
266	count++;	178	count++;
267	}	179	}
268		180
269	Safefree (req);	181	prv = req;
		182	req = req->next;
		183	free_req (prv);
		184
		185	if (do_croak)
		186	croak (0);
270	}	187	}
271		188
272	return count;	189	return count;
273	}	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	/*****************************************************************************/
274		404
275	static void *	405	static void *
276	aio_proc (void *thr_arg)	406	aio_proc (void *thr_arg)
277	{	407	{
278	aio_req req;	408	aio_req req;
…		…
304		434
305	type = req->type;	435	type = req->type;
306		436
307	switch (type)	437	switch (type)
308	{	438	{
309	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;
310	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;
311	#if SYS_readahead	441
312	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;
313	#else
314	case REQ_READAHEAD: req->result = -1; errno = ENOSYS; break;
315	#endif
316		443
317	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	444	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
318	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	445	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
319	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	446	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
320		447
321	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;
322	case REQ_CLOSE: req->result = close (req->fd); break;	449	case REQ_CLOSE: req->result = close (req->fd); break;
323	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;
324		453
		454	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
325	case REQ_FSYNC: req->result = fsync (req->fd); break;	455	case REQ_FSYNC: req->result = fsync (req->fd); break;
326	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
327		456
328	case REQ_QUIT:	457	case REQ_QUIT:
329	break;	458	break;
330		459
331	default:	460	default:
…		…
357	while (type != REQ_QUIT);	486	while (type != REQ_QUIT);
358		487
359	return 0;	488	return 0;
360	}	489	}
361		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
362	MODULE = IO::AIO PACKAGE = IO::AIO	503	MODULE = IO::AIO PACKAGE = IO::AIO
363		504
		505	PROTOTYPES: ENABLE
		506
364	BOOT:	507	BOOT:
365	{	508	{
366	if (pipe (respipe))	509	create_pipe ();
367	croak ("unable to initialize result pipe");	510	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
368
369	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
370	croak ("cannot set result pipe to nonblocking mode");
371
372	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
373	croak ("cannot set result pipe to nonblocking mode");
374	}	511	}
375		512
376	void	513	void
377	min_parallel(nthreads)	514	min_parallel(nthreads)
378	int nthreads	515	int nthreads
379	PROTOTYPE: $	516	PROTOTYPE: $
380	CODE:
381	while (nthreads > started)
382	start_thread ();
383		517
384	void	518	void
385	max_parallel(nthreads)	519	max_parallel(nthreads)
386	int nthreads	520	int nthreads
387	PROTOTYPE: $	521	PROTOTYPE: $
		522
		523	int
		524	max_outstanding(nreqs)
		525	int nreqs
		526	PROTOTYPE: $
388	CODE:	527	CODE:
389	{	528	RETVAL = max_outstanding;
390	int cur = started;	529	max_outstanding = nreqs;
391	while (cur > nthreads)
392	{
393	end_thread ();
394	cur--;
395	}
396		530
397	while (started > nthreads)
398	{
399	poll_wait ();
400	poll_cb (aTHX);
401	}
402	}
403
404	void	531	void
405	aio_open(pathname,flags,mode,callback)	532	aio_open(pathname,flags,mode,callback=&PL_sv_undef)
406	SV * pathname	533	SV * pathname
407	int flags	534	int flags
408	int mode	535	int mode
409	SV * callback	536	SV * callback
410	PROTOTYPE: $$$$	537	PROTOTYPE: $$$;$
411	CODE:	538	CODE:
412	{	539	{
413	aio_req req;	540	dREQ;
414
415	Newz (0, req, 1, aio_cb);
416
417	if (!req)
418	croak ("out of memory during aio_req allocation");
419		541
420	req->type = REQ_OPEN;	542	req->type = REQ_OPEN;
421	req->data = newSVsv (pathname);	543	req->data = newSVsv (pathname);
422	req->dataptr = SvPV_nolen (req->data);	544	req->dataptr = SvPVbyte_nolen (req->data);
423	req->fd = flags;	545	req->fd = flags;
424	req->mode = mode;	546	req->mode = mode;
425	req->callback = SvREFCNT_inc (callback);
426		547
427	send_req (req);	548	send_req (req);
428	}	549	}
429		550
430	void	551	void
431	aio_close(fh,callback)	552	aio_close(fh,callback=&PL_sv_undef)
432	InputStream fh	553	SV * fh
433	SV * callback	554	SV * callback
434	PROTOTYPE: $$	555	PROTOTYPE: $;$
435	ALIAS:	556	ALIAS:
436	aio_close = REQ_CLOSE	557	aio_close = REQ_CLOSE
437	aio_fsync = REQ_FSYNC	558	aio_fsync = REQ_FSYNC
438	aio_fdatasync = REQ_FDATASYNC	559	aio_fdatasync = REQ_FDATASYNC
439	CODE:	560	CODE:
440	{	561	{
		562	dREQ;
		563
		564	req->type = ix;
		565	req->fh = newSVsv (fh);
		566	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
		567
		568	send_req (req);
		569	}
		570
		571	void
		572	aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
		573	SV * fh
		574	UV offset
		575	IV length
		576	SV * data
		577	IV dataoffset
		578	SV * callback
		579	ALIAS:
		580	aio_read = REQ_READ
		581	aio_write = REQ_WRITE
		582	PROTOTYPE: $$$$$;$
		583	CODE:
		584	{
441	aio_req req;	585	aio_req req;
		586	STRLEN svlen;
		587	char *svptr = SvPVbyte (data, svlen);
442		588
443	Newz (0, req, 1, aio_cb);	589	SvUPGRADE (data, SVt_PV);
		590	SvPOK_on (data);
444		591
445	if (!req)	592	if (dataoffset < 0)
446	croak ("out of memory during aio_req allocation");	593	dataoffset += svlen;
447		594
448	req->type = ix;	595	if (dataoffset < 0 \|\| dataoffset > svlen)
449	req->fd = PerlIO_fileno (fh);	596	croak ("data offset outside of string");
450	req->callback = SvREFCNT_inc (callback);
451		597
452	send_req (req);	598	if (ix == REQ_WRITE)
453	}	599	{
454		600	/* write: check length and adjust. */
455	void	601	if (length < 0 \|\| length + dataoffset > svlen)
456	aio_read(fh,offset,length,data,dataoffset,callback)	602	length = svlen - dataoffset;
457	InputStream fh	603	}
458	UV offset	604	else
459	IV length	605	{
460	SV * data	606	/* read: grow scalar as necessary */
461	IV dataoffset	607	svptr = SvGROW (data, length + dataoffset);
462	SV * callback	608	}
463	PROTOTYPE: $$$$$$
464	CODE:
465	read_write (aTHX_ 0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
466
467	void
468	aio_write(fh,offset,length,data,dataoffset,callback)
469	OutputStream fh
470	UV offset
471	IV length
472	SV * data
473	IV dataoffset
474	SV * callback
475	PROTOTYPE: $$$$$$
476	CODE:
477	read_write (aTHX_ 1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
478
479	void
480	aio_readahead(fh,offset,length,callback)
481	InputStream fh
482	UV offset
483	IV length
484	SV * callback
485	PROTOTYPE: $$$$
486	CODE:
487	{
488	aio_req req;
489		609
490	if (length < 0)	610	if (length < 0)
491	croak ("length must not be negative");	611	croak ("length must not be negative");
492		612
493	Newz (0, req, 1, aio_cb);	613	{
		614	dREQ;
494		615
495	if (!req)	616	req->type = ix;
496	croak ("out of memory during aio_req allocation");	617	req->fh = newSVsv (fh);
		618	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
		619	: IoOFP (sv_2io (fh)));
		620	req->offset = offset;
		621	req->length = length;
		622	req->data = SvREFCNT_inc (data);
		623	req->dataptr = (char *)svptr + dataoffset;
		624	req->callback = SvREFCNT_inc (callback);
		625
		626	send_req (req);
		627	}
		628	}
		629
		630	void
		631	aio_readahead(fh,offset,length,callback=&PL_sv_undef)
		632	SV * fh
		633	UV offset
		634	IV length
		635	SV * callback
		636	PROTOTYPE: $$$;$
		637	CODE:
		638	{
		639	dREQ;
497		640
498	req->type = REQ_READAHEAD;	641	req->type = REQ_READAHEAD;
		642	req->fh = newSVsv (fh);
499	req->fd = PerlIO_fileno (fh);	643	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
500	req->offset = offset;	644	req->offset = offset;
501	req->length = length;	645	req->length = length;
502	req->callback = SvREFCNT_inc (callback);
503		646
504	send_req (req);	647	send_req (req);
505	}	648	}
506		649
507	void	650	void
508	aio_stat(fh_or_path,callback)	651	aio_stat(fh_or_path,callback=&PL_sv_undef)
509	SV * fh_or_path	652	SV * fh_or_path
510	SV * callback	653	SV * callback
511	PROTOTYPE: $$
512	ALIAS:	654	ALIAS:
		655	aio_stat = REQ_STAT
513	aio_lstat = 1	656	aio_lstat = REQ_LSTAT
514	CODE:	657	CODE:
515	{	658	{
516	aio_req req;	659	dREQ;
517
518	Newz (0, req, 1, aio_cb);
519
520	if (!req)
521	croak ("out of memory during aio_req allocation");
522		660
523	New (0, req->statdata, 1, Stat_t);	661	New (0, req->statdata, 1, Stat_t);
524
525	if (!req->statdata)	662	if (!req->statdata)
526	croak ("out of memory during aio_req->statdata allocation");	663	croak ("out of memory during aio_req->statdata allocation (sorry, i just leaked memory, too)");
527		664
528	if (SvPOK (fh_or_path))	665	if (SvPOK (fh_or_path))
529	{	666	{
530	req->type = ix ? REQ_LSTAT : REQ_STAT;	667	req->type = ix;
531	req->data = newSVsv (fh_or_path);	668	req->data = newSVsv (fh_or_path);
532	req->dataptr = SvPV_nolen (req->data);	669	req->dataptr = SvPVbyte_nolen (req->data);
533	}	670	}
534	else	671	else
535	{	672	{
536	req->type = REQ_FSTAT;	673	req->type = REQ_FSTAT;
		674	req->fh = newSVsv (fh_or_path);
537	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	675	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
538	}	676	}
539		677
540	req->callback = SvREFCNT_inc (callback);
541
542	send_req (req);	678	send_req (req);
543	}	679	}
544		680
545	void	681	void
546	aio_unlink(pathname,callback)	682	aio_unlink(pathname,callback=&PL_sv_undef)
547	SV * pathname	683	SV * pathname
548	SV * callback	684	SV * callback
549	PROTOTYPE: $$	685	ALIAS:
		686	aio_unlink = REQ_UNLINK
		687	aio_rmdir = REQ_RMDIR
550	CODE:	688	CODE:
551	{	689	{
552	aio_req req;	690	dREQ;
553		691
554	Newz (0, req, 1, aio_cb);	692	req->type = ix;
555
556	if (!req)
557	croak ("out of memory during aio_req allocation");
558
559	req->type = REQ_UNLINK;
560	req->data = newSVsv (pathname);	693	req->data = newSVsv (pathname);
561	req->dataptr = SvPV_nolen (req->data);	694	req->dataptr = SvPVbyte_nolen (req->data);
562	req->callback = SvREFCNT_inc (callback);
563		695
564	send_req (req);	696	send_req (req);
565	}	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	}
566		736
567	int	737	int
568	poll_fileno()	738	poll_fileno()
569	PROTOTYPE:	739	PROTOTYPE:
570	CODE:	740	CODE:
…		…
574		744
575	int	745	int
576	poll_cb(...)	746	poll_cb(...)
577	PROTOTYPE:	747	PROTOTYPE:
578	CODE:	748	CODE:
579	RETVAL = poll_cb (aTHX);	749	RETVAL = poll_cb ();
580	OUTPUT:	750	OUTPUT:
581	RETVAL	751	RETVAL
582		752
583	void	753	void
584	poll_wait()	754	poll_wait()

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Comparing IO-AIO/AIO.xs (file contents): Revision 1.3 by root, Sun Jul 10 20:07:11 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 1.3 by root, Sun Jul 10 20:07:11 2005 UTC vs.
Revision 1.26 by root, Wed Aug 17 03:52:20 2005 UTC