[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 1.29 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 *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;
64	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	67	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
65		68
66	static volatile aio_req reqs, reqe; /* queue start, queue end */	69	static volatile aio_req reqs, reqe; /* queue start, queue end */
67	static volatile aio_req ress, rese; /* queue start, queue end */	70	static volatile aio_req ress, rese; /* queue start, queue end */
68		71
69	static void aio_proc(void arg);	72	static void free_req (aio_req req)
70
71	static void
72	start_thread (void)
73	{	73	{
74	sigset_t fullsigset, oldsigset;	74	if (req->data)
75	pthread_t tid;	75	SvREFCNT_dec (req->data);
76	pthread_attr_t attr;
77		76
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)	77	if (req->fh)
101	{	78	SvREFCNT_dec (req->fh);
102	reqe->next = req;
103	reqe = req;
104	}
105	else
106	reqe = reqs = req;
107		79
108	pthread_cond_signal (&reqwait);	80	if (req->statdata)
109	pthread_mutex_unlock (&reqlock);	81	Safefree (req->statdata);
110	}
111		82
112	static void	83	if (req->callback)
113	end_thread (void)	84	SvREFCNT_dec (req->callback);
114	{
115	aio_req req;
116	New (0, req, 1, aio_cb);
117	req->type = REQ_QUIT;
118		85
119	send_req (req);	86	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	}	87	}
170		88
171	static void	89	static void
172	poll_wait ()	90	poll_wait ()
173	{	91	{
174	if (!nreqs)	92	if (nreqs && !ress)
175	return;	93	{
176
177	fd_set rfd;	94	fd_set rfd;
178	FD_ZERO(&rfd);	95	FD_ZERO(&rfd);
179	FD_SET(respipe [0], &rfd);	96	FD_SET(respipe [0], &rfd);
180		97
181	select (respipe [0] + 1, &rfd, 0, 0, 0);	98	select (respipe [0] + 1, &rfd, 0, 0, 0);
		99	}
182	}	100	}
183		101
184	static int	102	static int
185	poll_cb (pTHX)	103	poll_cb ()
186	{	104	{
187	dSP;	105	dSP;
188	int count = 0;	106	int count = 0;
		107	int do_croak = 0;
189	aio_req req;	108	aio_req req;
190
191	{
192	/* read and signals sent by the worker threads */
193	char buf [32];
194	while (read (respipe [0], buf, 32) > 0)
195	;
196	}
197		109
198	for (;;)	110	for (;;)
199	{	111	{
200	pthread_mutex_lock (&reslock);	112	pthread_mutex_lock (&reslock);
201
202	req = ress;	113	req = ress;
203		114
204	if (ress)	115	if (req)
205	{	116	{
206	ress = ress->next;	117	ress = req->next;
		118
207	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	}
208	}	128	}
209		129
210	pthread_mutex_unlock (&reslock);	130	pthread_mutex_unlock (&reslock);
211		131
212	if (!req)	132	if (!req)
…		…
220	{	140	{
221	int errorno = errno;	141	int errorno = errno;
222	errno = req->errorno;	142	errno = req->errorno;
223		143
224	if (req->type == REQ_READ)	144	if (req->type == REQ_READ)
225	SvCUR_set (req->data, req->dataoffset	145	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
226	+ req->result > 0 ? req->result : 0);
227		146
		147	if (req->data2ptr && (req->type == REQ_READ \|\| req->type == REQ_WRITE))
		148	SvREADONLY_off (req->data);
		149
228	if (req->data)	150	if (req->statdata)
229	SvREFCNT_dec (req->data);
230
231	if (req->type == REQ_STAT \|\| req->type == REQ_LSTAT \|\| req->type == REQ_FSTAT)
232	{	151	{
233	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	152	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
234	PL_laststatval = req->result;	153	PL_laststatval = req->result;
235	PL_statcache = *(req->statdata);	154	PL_statcache = *(req->statdata);
236
237	Safefree (req->statdata);
238	}	155	}
239		156
		157	ENTER;
240	PUSHMARK (SP);	158	PUSHMARK (SP);
241	XPUSHs (sv_2mortal (newSViv (req->result)));	159	XPUSHs (sv_2mortal (newSViv (req->result)));
242		160
243	if (req->type == REQ_OPEN)	161	if (req->type == REQ_OPEN)
244	{	162	{
…		…
247		165
248	PUTBACK;	166	PUTBACK;
249	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);	167	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);
250	SPAGAIN;	168	SPAGAIN;
251		169
252	fh = POPs;	170	fh = SvREFCNT_inc (POPs);
253		171
254	PUSHMARK (SP);	172	PUSHMARK (SP);
255	XPUSHs (fh);	173	XPUSHs (sv_2mortal (fh));
256	}	174	}
257		175
		176	if (SvOK (req->callback))
		177	{
258	PUTBACK;	178	PUTBACK;
259	call_sv (req->callback, G_VOID \| G_EVAL);	179	call_sv (req->callback, G_VOID \| G_EVAL);
260	SPAGAIN;	180	SPAGAIN;
		181
		182	if (SvTRUE (ERRSV))
		183	{
		184	free_req (req);
		185	croak (0);
		186	}
261		187	}
262	if (req->callback)	188
263	SvREFCNT_dec (req->callback);	189	LEAVE;
264		190
265	errno = errorno;	191	errno = errorno;
266	count++;	192	count++;
267	}	193	}
268		194
269	Safefree (req);	195	free_req (req);
270	}	196	}
271		197
272	return count;	198	return count;
273	}	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	/*****************************************************************************/
274		419
275	static void *	420	static void *
276	aio_proc (void *thr_arg)	421	aio_proc (void *thr_arg)
277	{	422	{
278	aio_req req;	423	aio_req req;
…		…
304		449
305	type = req->type;	450	type = req->type;
306		451
307	switch (type)	452	switch (type)
308	{	453	{
309	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;
310	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;
311	#if SYS_readahead	456
312	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;
313	#else
314	case REQ_READAHEAD: req->result = -1; errno = ENOSYS; break;
315	#endif
316		458
317	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	459	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
318	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	460	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
319	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	461	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
320		462
321	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;
322	case REQ_CLOSE: req->result = close (req->fd); break;	464	case REQ_CLOSE: req->result = close (req->fd); break;
323	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;
324		468
		469	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
325	case REQ_FSYNC: req->result = fsync (req->fd); break;	470	case REQ_FSYNC: req->result = fsync (req->fd); break;
326	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
327		471
328	case REQ_QUIT:	472	case REQ_QUIT:
329	break;	473	break;
330		474
331	default:	475	default:
…		…
357	while (type != REQ_QUIT);	501	while (type != REQ_QUIT);
358		502
359	return 0;	503	return 0;
360	}	504	}
361		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
362	MODULE = IO::AIO PACKAGE = IO::AIO	518	MODULE = IO::AIO PACKAGE = IO::AIO
363		519
		520	PROTOTYPES: ENABLE
		521
364	BOOT:	522	BOOT:
365	{	523	{
366	if (pipe (respipe))	524	create_pipe ();
367	croak ("unable to initialize result pipe");	525	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	}	526	}
375		527
376	void	528	void
377	min_parallel(nthreads)	529	min_parallel(nthreads)
378	int nthreads	530	int nthreads
379	PROTOTYPE: $	531	PROTOTYPE: $
380	CODE:
381	while (nthreads > started)
382	start_thread ();
383		532
384	void	533	void
385	max_parallel(nthreads)	534	max_parallel(nthreads)
386	int nthreads	535	int nthreads
387	PROTOTYPE: $	536	PROTOTYPE: $
		537
		538	int
		539	max_outstanding(nreqs)
		540	int nreqs
		541	PROTOTYPE: $
388	CODE:	542	CODE:
389	{	543	RETVAL = max_outstanding;
390	int cur = started;	544	max_outstanding = nreqs;
391	while (cur > nthreads)
392	{
393	end_thread ();
394	cur--;
395	}
396		545
397	while (started > nthreads)
398	{
399	poll_wait ();
400	poll_cb (aTHX);
401	}
402	}
403
404	void	546	void
405	aio_open(pathname,flags,mode,callback)	547	aio_open(pathname,flags,mode,callback=&PL_sv_undef)
406	SV * pathname	548	SV * pathname
407	int flags	549	int flags
408	int mode	550	int mode
409	SV * callback	551	SV * callback
410	PROTOTYPE: $$$$	552	PROTOTYPE: $$$;$
411	CODE:	553	CODE:
412	{	554	{
413	aio_req req;	555	dREQ;
414
415	Newz (0, req, 1, aio_cb);
416
417	if (!req)
418	croak ("out of memory during aio_req allocation");
419		556
420	req->type = REQ_OPEN;	557	req->type = REQ_OPEN;
421	req->data = newSVsv (pathname);	558	req->data = newSVsv (pathname);
422	req->dataptr = SvPV_nolen (req->data);	559	req->dataptr = SvPVbyte_nolen (req->data);
423	req->fd = flags;	560	req->fd = flags;
424	req->mode = mode;	561	req->mode = mode;
425	req->callback = SvREFCNT_inc (callback);
426		562
427	send_req (req);	563	send_req (req);
428	}	564	}
429		565
430	void	566	void
431	aio_close(fh,callback)	567	aio_close(fh,callback=&PL_sv_undef)
432	InputStream fh	568	SV * fh
433	SV * callback	569	SV * callback
434	PROTOTYPE: $$	570	PROTOTYPE: $;$
435	ALIAS:	571	ALIAS:
436	aio_close = REQ_CLOSE	572	aio_close = REQ_CLOSE
437	aio_fsync = REQ_FSYNC	573	aio_fsync = REQ_FSYNC
438	aio_fdatasync = REQ_FDATASYNC	574	aio_fdatasync = REQ_FDATASYNC
439	CODE:	575	CODE:
440	{	576	{
		577	dREQ;
		578
		579	req->type = ix;
		580	req->fh = newSVsv (fh);
		581	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
		582
		583	send_req (req);
		584	}
		585
		586	void
		587	aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
		588	SV * fh
		589	UV offset
		590	IV length
		591	SV * data
		592	IV dataoffset
		593	SV * callback
		594	ALIAS:
		595	aio_read = REQ_READ
		596	aio_write = REQ_WRITE
		597	PROTOTYPE: $$$$$;$
		598	CODE:
		599	{
441	aio_req req;	600	aio_req req;
		601	STRLEN svlen;
		602	char *svptr = SvPVbyte (data, svlen);
442		603
443	Newz (0, req, 1, aio_cb);	604	SvUPGRADE (data, SVt_PV);
		605	SvPOK_on (data);
444		606
445	if (!req)	607	if (dataoffset < 0)
446	croak ("out of memory during aio_req allocation");	608	dataoffset += svlen;
447		609
448	req->type = ix;	610	if (dataoffset < 0 \|\| dataoffset > svlen)
449	req->fd = PerlIO_fileno (fh);	611	croak ("data offset outside of string");
450	req->callback = SvREFCNT_inc (callback);
451		612
452	send_req (req);	613	if (ix == REQ_WRITE)
453	}	614	{
454		615	/* write: check length and adjust. */
455	void	616	if (length < 0 \|\| length + dataoffset > svlen)
456	aio_read(fh,offset,length,data,dataoffset,callback)	617	length = svlen - dataoffset;
457	InputStream fh	618	}
458	UV offset	619	else
459	IV length	620	{
460	SV * data	621	/* read: grow scalar as necessary */
461	IV dataoffset	622	svptr = SvGROW (data, length + dataoffset);
462	SV * callback	623	}
463	PROTOTYPE: $$$$$$
464	CODE:
465	read_write (aTHX_ 0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
466
467	void
468	aio_write(fh,offset,length,data,dataoffset,callback)
469	OutputStream fh
470	UV offset
471	IV length
472	SV * data
473	IV dataoffset
474	SV * callback
475	PROTOTYPE: $$$$$$
476	CODE:
477	read_write (aTHX_ 1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
478
479	void
480	aio_readahead(fh,offset,length,callback)
481	InputStream fh
482	UV offset
483	IV length
484	SV * callback
485	PROTOTYPE: $$$$
486	CODE:
487	{
488	aio_req req;
489		624
490	if (length < 0)	625	if (length < 0)
491	croak ("length must not be negative");	626	croak ("length must not be negative");
492		627
493	Newz (0, req, 1, aio_cb);	628	{
		629	dREQ;
494		630
495	if (!req)	631	req->type = ix;
496	croak ("out of memory during aio_req allocation");	632	req->fh = newSVsv (fh);
		633	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
		634	: IoOFP (sv_2io (fh)));
		635	req->offset = offset;
		636	req->length = length;
		637	req->data = SvREFCNT_inc (data);
		638	req->dataptr = (char *)svptr + dataoffset;
		639
		640	if (!SvREADONLY (data))
		641	{
		642	SvREADONLY_on (data);
		643	req->data2ptr = (void *)data;
		644	}
		645
		646	send_req (req);
		647	}
		648	}
		649
		650	void
		651	aio_readahead(fh,offset,length,callback=&PL_sv_undef)
		652	SV * fh
		653	UV offset
		654	IV length
		655	SV * callback
		656	PROTOTYPE: $$$;$
		657	CODE:
		658	{
		659	dREQ;
497		660
498	req->type = REQ_READAHEAD;	661	req->type = REQ_READAHEAD;
		662	req->fh = newSVsv (fh);
499	req->fd = PerlIO_fileno (fh);	663	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
500	req->offset = offset;	664	req->offset = offset;
501	req->length = length;	665	req->length = length;
502	req->callback = SvREFCNT_inc (callback);
503		666
504	send_req (req);	667	send_req (req);
505	}	668	}
506		669
507	void	670	void
508	aio_stat(fh_or_path,callback)	671	aio_stat(fh_or_path,callback=&PL_sv_undef)
509	SV * fh_or_path	672	SV * fh_or_path
510	SV * callback	673	SV * callback
511	PROTOTYPE: $$
512	ALIAS:	674	ALIAS:
		675	aio_stat = REQ_STAT
513	aio_lstat = 1	676	aio_lstat = REQ_LSTAT
514	CODE:	677	CODE:
515	{	678	{
516	aio_req req;	679	dREQ;
517
518	Newz (0, req, 1, aio_cb);
519
520	if (!req)
521	croak ("out of memory during aio_req allocation");
522		680
523	New (0, req->statdata, 1, Stat_t);	681	New (0, req->statdata, 1, Stat_t);
524
525	if (!req->statdata)	682	if (!req->statdata)
		683	{
		684	free_req (req);
526	croak ("out of memory during aio_req->statdata allocation");	685	croak ("out of memory during aio_req->statdata allocation");
		686	}
527		687
528	if (SvPOK (fh_or_path))	688	if (SvPOK (fh_or_path))
529	{	689	{
530	req->type = ix ? REQ_LSTAT : REQ_STAT;	690	req->type = ix;
531	req->data = newSVsv (fh_or_path);	691	req->data = newSVsv (fh_or_path);
532	req->dataptr = SvPV_nolen (req->data);	692	req->dataptr = SvPVbyte_nolen (req->data);
533	}	693	}
534	else	694	else
535	{	695	{
536	req->type = REQ_FSTAT;	696	req->type = REQ_FSTAT;
		697	req->fh = newSVsv (fh_or_path);
537	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	698	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
538	}	699	}
539		700
540	req->callback = SvREFCNT_inc (callback);
541
542	send_req (req);	701	send_req (req);
543	}	702	}
544		703
545	void	704	void
546	aio_unlink(pathname,callback)	705	aio_unlink(pathname,callback=&PL_sv_undef)
547	SV * pathname	706	SV * pathname
548	SV * callback	707	SV * callback
549	PROTOTYPE: $$	708	ALIAS:
		709	aio_unlink = REQ_UNLINK
		710	aio_rmdir = REQ_RMDIR
550	CODE:	711	CODE:
551	{	712	{
552	aio_req req;	713	dREQ;
553		714
554	Newz (0, req, 1, aio_cb);	715	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);	716	req->data = newSVsv (pathname);
561	req->dataptr = SvPV_nolen (req->data);	717	req->dataptr = SvPVbyte_nolen (req->data);
562	req->callback = SvREFCNT_inc (callback);
563		718
564	send_req (req);	719	send_req (req);
565	}	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	}
566		759
567	int	760	int
568	poll_fileno()	761	poll_fileno()
569	PROTOTYPE:	762	PROTOTYPE:
570	CODE:	763	CODE:
…		…
574		767
575	int	768	int
576	poll_cb(...)	769	poll_cb(...)
577	PROTOTYPE:	770	PROTOTYPE:
578	CODE:	771	CODE:
579	RETVAL = poll_cb (aTHX);	772	RETVAL = poll_cb ();
580	OUTPUT:	773	OUTPUT:
581	RETVAL	774	RETVAL
582		775
583	void	776	void
584	poll_wait()	777	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 1.29 by root, Wed Aug 17 06:12:10 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 1.29 by root, Wed Aug 17 06:12:10 2005 UTC