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

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.4 by root, Sun Jul 10 20:57:00 2005 UTC vs.
Revision 1.27 by root, Wed Aug 17 04:47:02 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
27		29
28	enum {	30	enum {
29	REQ_QUIT,	31	REQ_QUIT,
30	REQ_OPEN, REQ_CLOSE,	32	REQ_OPEN, REQ_CLOSE,
31	REQ_READ, REQ_WRITE, REQ_READAHEAD,	33	REQ_READ, REQ_WRITE, REQ_READAHEAD,
32	REQ_STAT, REQ_LSTAT, REQ_FSTAT, REQ_UNLINK,	34	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
33	REQ_FSYNC, REQ_FDATASYNC,	35	REQ_FSYNC, REQ_FDATASYNC,
		36	REQ_UNLINK, REQ_RMDIR,
		37	REQ_SYMLINK,
34	};	38	};
35		39
36	typedef struct aio_cb {	40	typedef struct aio_cb {
37	struct aio_cb *volatile next;	41	struct aio_cb *volatile next;
38		42
…		…
42	off_t offset;	46	off_t offset;
43	size_t length;	47	size_t length;
44	ssize_t result;	48	ssize_t result;
45	mode_t mode; /* open */	49	mode_t mode; /* open */
46	int errorno;	50	int errorno;
47	SV data, callback;	51	SV data, callback, *fh;
48	void *dataptr;	52	void dataptr, data2ptr;
49	STRLEN dataoffset;	53	STRLEN dataoffset;
50		54
51	Stat_t *statdata;	55	Stat_t *statdata;
52	} aio_cb;	56	} aio_cb;
53		57
54	typedef aio_cb *aio_req;	58	typedef aio_cb *aio_req;
55		59
56	static int started;	60	static int started;
57	static int nreqs;	61	static volatile int nreqs;
58	static int max_outstanding = 1<<30;	62	static int max_outstanding = 1<<30;
59	static int respipe [2];	63	static int respipe [2];
60		64
61	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	65	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;
62	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;	66	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
63	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	67	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
64		68
65	static volatile aio_req reqs, reqe; /* queue start, queue end */	69	static volatile aio_req reqs, reqe; /* queue start, queue end */
66	static volatile aio_req ress, rese; /* queue start, queue end */	70	static volatile aio_req ress, rese; /* queue start, queue end */
67		71
		72	static void free_req (aio_req req)
		73	{
		74	if (req->data)
		75	SvREFCNT_dec (req->data);
		76
		77	if (req->fh)
		78	SvREFCNT_dec (req->fh);
		79
		80	if (req->statdata)
		81	Safefree (req->statdata);
		82
		83	if (req->callback)
		84	SvREFCNT_dec (req->callback);
		85
		86	Safefree (req);
		87	}
		88
68	static void	89	static void
69	poll_wait ()	90	poll_wait ()
70	{	91	{
71	if (!nreqs)	92	if (nreqs && !ress)
72	return;	93	{
73
74	fd_set rfd;	94	fd_set rfd;
75	FD_ZERO(&rfd);	95	FD_ZERO(&rfd);
76	FD_SET(respipe [0], &rfd);	96	FD_SET(respipe [0], &rfd);
77		97
78	select (respipe [0] + 1, &rfd, 0, 0, 0);	98	select (respipe [0] + 1, &rfd, 0, 0, 0);
		99	}
79	}	100	}
80		101
81	static int	102	static int
82	poll_cb (pTHX)	103	poll_cb ()
83	{	104	{
84	dSP;	105	dSP;
85	int count = 0;	106	int count = 0;
		107	int do_croak = 0;
86	aio_req req;	108	aio_req req;
87
88	{
89	/* read and signals sent by the worker threads */
90	char buf [32];
91	while (read (respipe [0], buf, 32) > 0)
92	;
93	}
94		109
95	for (;;)	110	for (;;)
96	{	111	{
97	pthread_mutex_lock (&reslock);	112	pthread_mutex_lock (&reslock);
98
99	req = ress;	113	req = ress;
100		114
101	if (ress)	115	if (req)
102	{	116	{
103	ress = ress->next;	117	ress = req->next;
		118
104	if (!ress) rese = 0;	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	}
105	}	128	}
106		129
107	pthread_mutex_unlock (&reslock);	130	pthread_mutex_unlock (&reslock);
108		131
109	if (!req)	132	if (!req)
…		…
117	{	140	{
118	int errorno = errno;	141	int errorno = errno;
119	errno = req->errorno;	142	errno = req->errorno;
120		143
121	if (req->type == REQ_READ)	144	if (req->type == REQ_READ)
122	SvCUR_set (req->data, req->dataoffset	145	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
123	+ req->result > 0 ? req->result : 0);
124		146
125	if (req->data)	147	if (req->statdata)
126	SvREFCNT_dec (req->data);
127
128	if (req->type == REQ_STAT \|\| req->type == REQ_LSTAT \|\| req->type == REQ_FSTAT)
129	{	148	{
130	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	149	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
131	PL_laststatval = req->result;	150	PL_laststatval = req->result;
132	PL_statcache = *(req->statdata);	151	PL_statcache = *(req->statdata);
133
134	Safefree (req->statdata);
135	}	152	}
136		153
		154	ENTER;
137	PUSHMARK (SP);	155	PUSHMARK (SP);
138	XPUSHs (sv_2mortal (newSViv (req->result)));	156	XPUSHs (sv_2mortal (newSViv (req->result)));
139		157
140	if (req->type == REQ_OPEN)	158	if (req->type == REQ_OPEN)
141	{	159	{
…		…
144		162
145	PUTBACK;	163	PUTBACK;
146	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);	164	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);
147	SPAGAIN;	165	SPAGAIN;
148		166
149	fh = POPs;	167	fh = SvREFCNT_inc (POPs);
150		168
151	PUSHMARK (SP);	169	PUSHMARK (SP);
152	XPUSHs (fh);	170	XPUSHs (sv_2mortal (fh));
153	}	171	}
154		172
		173	if (SvOK (req->callback))
		174	{
155	PUTBACK;	175	PUTBACK;
156	call_sv (req->callback, G_VOID \| G_EVAL);	176	call_sv (req->callback, G_VOID \| G_EVAL);
157	SPAGAIN;	177	SPAGAIN;
		178
		179	if (SvTRUE (ERRSV))
		180	{
		181	free_req (req);
		182	croak (0);
		183	}
158		184	}
159	if (req->callback)	185
160	SvREFCNT_dec (req->callback);	186	LEAVE;
161		187
162	errno = errorno;	188	errno = errorno;
163	count++;	189	count++;
164	}	190	}
165		191
166	Safefree (req);	192	free_req (req);
167	}	193	}
168		194
169	return count;	195	return count;
170	}	196	}
171		197
…		…
209	reqe = reqs = req;	235	reqe = reqs = req;
210		236
211	pthread_cond_signal (&reqwait);	237	pthread_cond_signal (&reqwait);
212	pthread_mutex_unlock (&reqlock);	238	pthread_mutex_unlock (&reqlock);
213		239
214	while (nreqs > max_outstanding)	240	if (nreqs > max_outstanding)
		241	for (;;)
		242	{
		243	poll_cb ();
		244
		245	if (nreqs <= max_outstanding)
		246	break;
		247
		248	poll_wait ();
		249	}
		250	}
		251
		252	static void
		253	end_thread (void)
		254	{
		255	aio_req req;
		256	Newz (0, req, 1, aio_cb);
		257	req->type = REQ_QUIT;
		258
		259	send_req (req);
		260	}
		261
		262	static void min_parallel (int nthreads)
		263	{
		264	while (nthreads > started)
		265	start_thread ();
		266	}
		267
		268	static void max_parallel (int nthreads)
		269	{
		270	int cur = started;
		271
		272	while (cur > nthreads)
		273	{
		274	end_thread ();
		275	cur--;
		276	}
		277
		278	while (started > nthreads)
215	{	279	{
216	poll_wait ();	280	poll_wait ();
217	poll_cb ();	281	poll_cb ();
218	}	282	}
219	}	283	}
220		284
221	static void	285	static void create_pipe ()
222	end_thread (void)
223	{	286	{
224	aio_req req;	287	if (pipe (respipe))
225	New (0, req, 1, aio_cb);	288	croak ("unable to initialize result pipe");
226	req->type = REQ_QUIT;
227		289
228	send_req (req);	290	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
229	}	291	croak ("cannot set result pipe to nonblocking mode");
230		292
231	static void	293	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
232	read_write (pTHX_	294	croak ("cannot set result pipe to nonblocking mode");
233	int dowrite, int fd, off_t offset, size_t length,	295	}
234	SV data, STRLEN dataoffset, SV callback)
235	{
236	aio_req req;
237	STRLEN svlen;
238	char *svptr = SvPV (data, svlen);
239		296
240	SvUPGRADE (data, SVt_PV);	297	static void atfork_prepare (void)
241	SvPOK_on (data);	298	{
		299	for (;;) {
242		300
243	if (dataoffset < 0)	301	for (;;)
244	dataoffset += svlen;	302	{
		303	poll_cb ();
245		304
246	if (dataoffset < 0 \|\| dataoffset > svlen)	305	if (!nreqs)
247	croak ("data offset outside of string");	306	break;
248		307
249	if (dowrite)	308	poll_wait ();
		309	}
		310
		311	pthread_mutex_lock (&reqlock);
		312
		313	if (!nreqs)
		314	break;
		315
		316	pthread_mutex_unlock (&reqlock);
		317	}
		318
		319	pthread_mutex_lock (&reslock);
		320
		321	assert (!nreqs && !reqs && !ress);
		322	}
		323
		324	static void atfork_parent (void)
		325	{
		326	pthread_mutex_unlock (&reslock);
		327	pthread_mutex_unlock (&reqlock);
		328	}
		329
		330	static void atfork_child (void)
		331	{
		332	int restart = started;
		333	started = 0;
		334
		335	atfork_parent ();
		336
		337	min_parallel (restart);
		338	}
		339
		340	/*****************************************************************************/
		341	/* work around various missing functions */
		342
		343	#if !HAVE_PREADWRITE
		344	# define pread aio_pread
		345	# define pwrite aio_pwrite
		346
		347	/*
		348	* make our pread/pwrite safe against themselves, but not against
		349	* normal read/write by using a mutex. slows down execution a lot,
		350	* but that's your problem, not mine.
		351	*/
		352	static pthread_mutex_t iolock = PTHREAD_MUTEX_INITIALIZER;
		353
		354	static ssize_t
		355	pread (int fd, void *buf, size_t count, off_t offset)
		356	{
		357	ssize_t res;
		358	off_t ooffset;
		359
		360	pthread_mutex_lock (&iolock);
		361	ooffset = lseek (fd, 0, SEEK_CUR);
		362	lseek (fd, offset, SEEK_SET);
		363	res = read (fd, buf, count);
		364	lseek (fd, ooffset, SEEK_SET);
		365	pthread_mutex_unlock (&iolock);
		366
		367	return res;
		368	}
		369
		370	static ssize_t
		371	pwrite (int fd, void *buf, size_t count, off_t offset)
		372	{
		373	ssize_t res;
		374	off_t ooffset;
		375
		376	pthread_mutex_lock (&iolock);
		377	ooffset = lseek (fd, 0, SEEK_CUR);
		378	lseek (fd, offset, SEEK_SET);
		379	res = write (fd, buf, count);
		380	lseek (fd, offset, SEEK_SET);
		381	pthread_mutex_unlock (&iolock);
		382
		383	return res;
		384	}
		385	#endif
		386
		387	#if !HAVE_FDATASYNC
		388	# define fdatasync fsync
		389	#endif
		390
		391	#if !HAVE_READAHEAD
		392	# define readahead aio_readahead
		393
		394	static char readahead_buf[4096];
		395
		396	static ssize_t
		397	readahead (int fd, off_t offset, size_t count)
		398	{
		399	while (count > 0)
250	{	400	{
251	/* write: check length and adjust. */	401	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
252	if (length < 0 \|\| length + dataoffset > svlen)	402
253	length = svlen - dataoffset;	403	pread (fd, readahead_buf, len, offset);
		404	offset += len;
		405	count -= len;
254	}	406	}
255	else
256	{
257	/* read: grow scalar as necessary */
258	svptr = SvGROW (data, length + dataoffset);
259	}
260		407
261	if (length < 0)	408	errno = 0;
262	croak ("length must not be negative");
263
264	Newz (0, req, 1, aio_cb);
265
266	if (!req)
267	croak ("out of memory during aio_req allocation");
268
269	req->type = dowrite ? REQ_WRITE : REQ_READ;
270	req->fd = fd;
271	req->offset = offset;
272	req->length = length;
273	req->data = SvREFCNT_inc (data);
274	req->dataptr = (char *)svptr + dataoffset;
275	req->callback = SvREFCNT_inc (callback);
276
277	send_req (req);
278	}	409	}
		410	#endif
		411
		412	/*****************************************************************************/
279		413
280	static void *	414	static void *
281	aio_proc (void *thr_arg)	415	aio_proc (void *thr_arg)
282	{	416	{
283	aio_req req;	417	aio_req req;
…		…
309		443
310	type = req->type;	444	type = req->type;
311		445
312	switch (type)	446	switch (type)
313	{	447	{
314	case REQ_READ: req->result = pread64 (req->fd, req->dataptr, req->length, req->offset); break;	448	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
315	case REQ_WRITE: req->result = pwrite64 (req->fd, req->dataptr, req->length, req->offset); break;	449	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
316	#if SYS_readahead	450
317	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	451	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
318	#else
319	case REQ_READAHEAD: req->result = -1; errno = ENOSYS; break;
320	#endif
321		452
322	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	453	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
323	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	454	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
324	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	455	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
325		456
326	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;	457	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
327	case REQ_CLOSE: req->result = close (req->fd); break;	458	case REQ_CLOSE: req->result = close (req->fd); break;
328	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	459	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
		460	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
		461	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
329		462
		463	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
330	case REQ_FSYNC: req->result = fsync (req->fd); break;	464	case REQ_FSYNC: req->result = fsync (req->fd); break;
331	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
332		465
333	case REQ_QUIT:	466	case REQ_QUIT:
334	break;	467	break;
335		468
336	default:	469	default:
…		…
362	while (type != REQ_QUIT);	495	while (type != REQ_QUIT);
363		496
364	return 0;	497	return 0;
365	}	498	}
366		499
		500	#define dREQ \
		501	aio_req req; \
		502	\
		503	if (SvOK (callback) && !SvROK (callback)) \
		504	croak ("clalback must be undef or of reference type"); \
		505	\
		506	Newz (0, req, 1, aio_cb); \
		507	if (!req) \
		508	croak ("out of memory during aio_req allocation"); \
		509	\
		510	req->callback = newSVsv (callback);
		511
367	MODULE = IO::AIO PACKAGE = IO::AIO	512	MODULE = IO::AIO PACKAGE = IO::AIO
368		513
		514	PROTOTYPES: ENABLE
		515
369	BOOT:	516	BOOT:
370	{	517	{
371	if (pipe (respipe))	518	create_pipe ();
372	croak ("unable to initialize result pipe");	519	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
373
374	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
375	croak ("cannot set result pipe to nonblocking mode");
376
377	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
378	croak ("cannot set result pipe to nonblocking mode");
379	}	520	}
380		521
381	void	522	void
382	min_parallel(nthreads)	523	min_parallel(nthreads)
383	int nthreads	524	int nthreads
384	PROTOTYPE: $	525	PROTOTYPE: $
385	CODE:
386	while (nthreads > started)
387	start_thread ();
388		526
389	void	527	void
390	max_parallel(nthreads)	528	max_parallel(nthreads)
391	int nthreads	529	int nthreads
392	PROTOTYPE: $	530	PROTOTYPE: $
393	CODE:
394	{
395	int cur = started;
396	while (cur > nthreads)
397	{
398	end_thread ();
399	cur--;
400	}
401
402	while (started > nthreads)
403	{
404	poll_wait ();
405	poll_cb (aTHX);
406	}
407	}
408		531
409	int	532	int
410	max_outstanding(nreqs)	533	max_outstanding(nreqs)
411	int nreqs	534	int nreqs
412	PROTOTYPE: $	535	PROTOTYPE: $
413	CODE:	536	CODE:
414	RETVAL = max_outstanding;	537	RETVAL = max_outstanding;
415	max_outstanding = nreqs;	538	max_outstanding = nreqs;
416		539
417	void	540	void
418	aio_open(pathname,flags,mode,callback)	541	aio_open(pathname,flags,mode,callback=&PL_sv_undef)
419	SV * pathname	542	SV * pathname
420	int flags	543	int flags
421	int mode	544	int mode
422	SV * callback	545	SV * callback
423	PROTOTYPE: $$$$	546	PROTOTYPE: $$$;$
424	CODE:	547	CODE:
425	{	548	{
426	aio_req req;	549	dREQ;
427
428	Newz (0, req, 1, aio_cb);
429
430	if (!req)
431	croak ("out of memory during aio_req allocation");
432		550
433	req->type = REQ_OPEN;	551	req->type = REQ_OPEN;
434	req->data = newSVsv (pathname);	552	req->data = newSVsv (pathname);
435	req->dataptr = SvPV_nolen (req->data);	553	req->dataptr = SvPVbyte_nolen (req->data);
436	req->fd = flags;	554	req->fd = flags;
437	req->mode = mode;	555	req->mode = mode;
438	req->callback = SvREFCNT_inc (callback);
439		556
440	send_req (req);	557	send_req (req);
441	}	558	}
442		559
443	void	560	void
444	aio_close(fh,callback)	561	aio_close(fh,callback=&PL_sv_undef)
445	InputStream fh	562	SV * fh
446	SV * callback	563	SV * callback
447	PROTOTYPE: $$	564	PROTOTYPE: $;$
448	ALIAS:	565	ALIAS:
449	aio_close = REQ_CLOSE	566	aio_close = REQ_CLOSE
450	aio_fsync = REQ_FSYNC	567	aio_fsync = REQ_FSYNC
451	aio_fdatasync = REQ_FDATASYNC	568	aio_fdatasync = REQ_FDATASYNC
452	CODE:	569	CODE:
453	{	570	{
		571	dREQ;
		572
		573	req->type = ix;
		574	req->fh = newSVsv (fh);
		575	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
		576
		577	send_req (req);
		578	}
		579
		580	void
		581	aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
		582	SV * fh
		583	UV offset
		584	IV length
		585	SV * data
		586	IV dataoffset
		587	SV * callback
		588	ALIAS:
		589	aio_read = REQ_READ
		590	aio_write = REQ_WRITE
		591	PROTOTYPE: $$$$$;$
		592	CODE:
		593	{
454	aio_req req;	594	aio_req req;
		595	STRLEN svlen;
		596	char *svptr = SvPVbyte (data, svlen);
455		597
456	Newz (0, req, 1, aio_cb);	598	SvUPGRADE (data, SVt_PV);
		599	SvPOK_on (data);
457		600
458	if (!req)	601	if (dataoffset < 0)
459	croak ("out of memory during aio_req allocation");	602	dataoffset += svlen;
460		603
461	req->type = ix;	604	if (dataoffset < 0 \|\| dataoffset > svlen)
462	req->fd = PerlIO_fileno (fh);	605	croak ("data offset outside of string");
463	req->callback = SvREFCNT_inc (callback);
464		606
465	send_req (req);	607	if (ix == REQ_WRITE)
466	}	608	{
467		609	/* write: check length and adjust. */
468	void	610	if (length < 0 \|\| length + dataoffset > svlen)
469	aio_read(fh,offset,length,data,dataoffset,callback)	611	length = svlen - dataoffset;
470	InputStream fh	612	}
471	UV offset	613	else
472	IV length	614	{
473	SV * data	615	/* read: grow scalar as necessary */
474	IV dataoffset	616	svptr = SvGROW (data, length + dataoffset);
475	SV * callback	617	}
476	PROTOTYPE: $$$$$$
477	CODE:
478	read_write (aTHX_ 0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
479
480	void
481	aio_write(fh,offset,length,data,dataoffset,callback)
482	OutputStream fh
483	UV offset
484	IV length
485	SV * data
486	IV dataoffset
487	SV * callback
488	PROTOTYPE: $$$$$$
489	CODE:
490	read_write (aTHX_ 1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
491
492	void
493	aio_readahead(fh,offset,length,callback)
494	InputStream fh
495	UV offset
496	IV length
497	SV * callback
498	PROTOTYPE: $$$$
499	CODE:
500	{
501	aio_req req;
502		618
503	if (length < 0)	619	if (length < 0)
504	croak ("length must not be negative");	620	croak ("length must not be negative");
505		621
506	Newz (0, req, 1, aio_cb);	622	{
		623	dREQ;
507		624
508	if (!req)	625	req->type = ix;
509	croak ("out of memory during aio_req allocation");	626	req->fh = newSVsv (fh);
		627	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
		628	: IoOFP (sv_2io (fh)));
		629	req->offset = offset;
		630	req->length = length;
		631	req->data = SvREFCNT_inc (data);
		632	req->dataptr = (char *)svptr + dataoffset;
		633
		634	send_req (req);
		635	}
		636	}
		637
		638	void
		639	aio_readahead(fh,offset,length,callback=&PL_sv_undef)
		640	SV * fh
		641	UV offset
		642	IV length
		643	SV * callback
		644	PROTOTYPE: $$$;$
		645	CODE:
		646	{
		647	dREQ;
510		648
511	req->type = REQ_READAHEAD;	649	req->type = REQ_READAHEAD;
		650	req->fh = newSVsv (fh);
512	req->fd = PerlIO_fileno (fh);	651	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
513	req->offset = offset;	652	req->offset = offset;
514	req->length = length;	653	req->length = length;
515	req->callback = SvREFCNT_inc (callback);
516		654
517	send_req (req);	655	send_req (req);
518	}	656	}
519		657
520	void	658	void
521	aio_stat(fh_or_path,callback)	659	aio_stat(fh_or_path,callback=&PL_sv_undef)
522	SV * fh_or_path	660	SV * fh_or_path
523	SV * callback	661	SV * callback
524	PROTOTYPE: $$
525	ALIAS:	662	ALIAS:
		663	aio_stat = REQ_STAT
526	aio_lstat = 1	664	aio_lstat = REQ_LSTAT
527	CODE:	665	CODE:
528	{	666	{
529	aio_req req;	667	dREQ;
530
531	Newz (0, req, 1, aio_cb);
532
533	if (!req)
534	croak ("out of memory during aio_req allocation");
535		668
536	New (0, req->statdata, 1, Stat_t);	669	New (0, req->statdata, 1, Stat_t);
537
538	if (!req->statdata)	670	if (!req->statdata)
		671	{
		672	free_req (req);
539	croak ("out of memory during aio_req->statdata allocation");	673	croak ("out of memory during aio_req->statdata allocation");
		674	}
540		675
541	if (SvPOK (fh_or_path))	676	if (SvPOK (fh_or_path))
542	{	677	{
543	req->type = ix ? REQ_LSTAT : REQ_STAT;	678	req->type = ix;
544	req->data = newSVsv (fh_or_path);	679	req->data = newSVsv (fh_or_path);
545	req->dataptr = SvPV_nolen (req->data);	680	req->dataptr = SvPVbyte_nolen (req->data);
546	}	681	}
547	else	682	else
548	{	683	{
549	req->type = REQ_FSTAT;	684	req->type = REQ_FSTAT;
		685	req->fh = newSVsv (fh_or_path);
550	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	686	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
551	}	687	}
552		688
553	req->callback = SvREFCNT_inc (callback);
554
555	send_req (req);	689	send_req (req);
556	}	690	}
557		691
558	void	692	void
559	aio_unlink(pathname,callback)	693	aio_unlink(pathname,callback=&PL_sv_undef)
560	SV * pathname	694	SV * pathname
561	SV * callback	695	SV * callback
562	PROTOTYPE: $$	696	ALIAS:
		697	aio_unlink = REQ_UNLINK
		698	aio_rmdir = REQ_RMDIR
563	CODE:	699	CODE:
564	{	700	{
565	aio_req req;	701	dREQ;
566		702
567	Newz (0, req, 1, aio_cb);	703	req->type = ix;
568
569	if (!req)
570	croak ("out of memory during aio_req allocation");
571
572	req->type = REQ_UNLINK;
573	req->data = newSVsv (pathname);	704	req->data = newSVsv (pathname);
574	req->dataptr = SvPV_nolen (req->data);	705	req->dataptr = SvPVbyte_nolen (req->data);
575	req->callback = SvREFCNT_inc (callback);
576		706
577	send_req (req);	707	send_req (req);
578	}	708	}
		709
		710	void
		711	aio_symlink(oldpath,newpath,callback=&PL_sv_undef)
		712	SV * oldpath
		713	SV * newpath
		714	SV * callback
		715	CODE:
		716	{
		717	dREQ;
		718
		719	req->type = REQ_SYMLINK;
		720	req->fh = newSVsv (oldpath);
		721	req->data2ptr = SvPVbyte_nolen (req->fh);
		722	req->data = newSVsv (newpath);
		723	req->dataptr = SvPVbyte_nolen (req->data);
		724
		725	send_req (req);
		726	}
		727
		728	void
		729	flush()
		730	PROTOTYPE:
		731	CODE:
		732	while (nreqs)
		733	{
		734	poll_wait ();
		735	poll_cb ();
		736	}
		737
		738	void
		739	poll()
		740	PROTOTYPE:
		741	CODE:
		742	if (nreqs)
		743	{
		744	poll_wait ();
		745	poll_cb ();
		746	}
579		747
580	int	748	int
581	poll_fileno()	749	poll_fileno()
582	PROTOTYPE:	750	PROTOTYPE:
583	CODE:	751	CODE:
…		…
587		755
588	int	756	int
589	poll_cb(...)	757	poll_cb(...)
590	PROTOTYPE:	758	PROTOTYPE:
591	CODE:	759	CODE:
592	RETVAL = poll_cb (aTHX);	760	RETVAL = poll_cb ();
593	OUTPUT:	761	OUTPUT:
594	RETVAL	762	RETVAL
595		763
596	void	764	void
597	poll_wait()	765	poll_wait()

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Comparing IO-AIO/AIO.xs (file contents): Revision 1.4 by root, Sun Jul 10 20:57:00 2005 UTC vs. Revision 1.27 by root, Wed Aug 17 04:47:02 2005 UTC

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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.4 by root, Sun Jul 10 20:57:00 2005 UTC vs.
Revision 1.27 by root, Wed Aug 17 04:47:02 2005 UTC