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

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.9 by root, Tue Jul 12 11:02:54 2005 UTC vs.
Revision 1.30 by root, Thu Aug 18 16:32:10 2005 UTC

…		…
		1	#define _REENTRANT 1
		2	#include <errno.h>
		3
1	#include "EXTERN.h"	4	#include "EXTERN.h"
2	#include "perl.h"	5	#include "perl.h"
3	#include "XSUB.h"	6	#include "XSUB.h"
4		7
		8	#include "autoconf/config.h"
		9
5	#include <sys/types.h>	10	#include <sys/types.h>
6	#include <sys/stat.h>	11	#include <sys/stat.h>
		12
7	#include <unistd.h>	13	#include <unistd.h>
8	#include <fcntl.h>	14	#include <fcntl.h>
9	#include <signal.h>	15	#include <signal.h>
10	#include <sched.h>	16	#include <sched.h>
11		17
12	#include <pthread.h>	18	#include <pthread.h>
13	#include <sys/syscall.h>
14		19
15	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 ;) */
16	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 ;) */
17	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 ;) */
18		23
24		29
25	enum {	30	enum {
26	REQ_QUIT,	31	REQ_QUIT,
27	REQ_OPEN, REQ_CLOSE,	32	REQ_OPEN, REQ_CLOSE,
28	REQ_READ, REQ_WRITE, REQ_READAHEAD,	33	REQ_READ, REQ_WRITE, REQ_READAHEAD,
29	REQ_STAT, REQ_LSTAT, REQ_FSTAT, REQ_UNLINK,	34	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
30	REQ_FSYNC, REQ_FDATASYNC,	35	REQ_FSYNC, REQ_FDATASYNC,
		36	REQ_UNLINK, REQ_RMDIR,
		37	REQ_SYMLINK,
31	};	38	};
32		39
33	typedef struct aio_cb {	40	typedef struct aio_cb {
34	struct aio_cb *volatile next;	41	struct aio_cb *volatile next;
35		42
…		…
39	off_t offset;	46	off_t offset;
40	size_t length;	47	size_t length;
41	ssize_t result;	48	ssize_t result;
42	mode_t mode; /* open */	49	mode_t mode; /* open */
43	int errorno;	50	int errorno;
44	SV data, callback;	51	SV data, callback, *fh;
45	void *dataptr;	52	void dataptr, data2ptr;
46	STRLEN dataoffset;	53	STRLEN dataoffset;
47		54
48	Stat_t *statdata;	55	Stat_t *statdata;
49	} aio_cb;	56	} aio_cb;
50		57
51	typedef aio_cb *aio_req;	58	typedef aio_cb *aio_req;
52		59
53	static int started;	60	static int started, wanted;
54	static int nreqs;	61	static volatile int nreqs;
55	static int max_outstanding = 1<<30;	62	static int max_outstanding = 1<<30;
56	static int respipe [2];	63	static int respipe [2];
57		64
58	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	65	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;
59	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;	66	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
60	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	67	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
61		68
62	static volatile aio_req reqs, reqe; /* queue start, queue end */	69	static volatile aio_req reqs, reqe; /* queue start, queue end */
63	static volatile aio_req ress, rese; /* queue start, queue end */	70	static volatile aio_req ress, rese; /* queue start, queue end */
64		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
65	static void	89	static void
66	poll_wait ()	90	poll_wait ()
67	{	91	{
68	if (!nreqs)	92	if (nreqs && !ress)
69	return;	93	{
70
71	fd_set rfd;	94	fd_set rfd;
72	FD_ZERO(&rfd);	95	FD_ZERO(&rfd);
73	FD_SET(respipe [0], &rfd);	96	FD_SET(respipe [0], &rfd);
74		97
75	select (respipe [0] + 1, &rfd, 0, 0, 0);	98	select (respipe [0] + 1, &rfd, 0, 0, 0);
		99	}
76	}	100	}
77		101
78	static int	102	static int
79	poll_cb ()	103	poll_cb ()
80	{	104	{
81	dSP;	105	dSP;
82	int count = 0;	106	int count = 0;
		107	int do_croak = 0;
83	aio_req req;	108	aio_req req;
84
85	{
86	/* read and signals sent by the worker threads */
87	char buf [32];
88	while (read (respipe [0], buf, 32) > 0)
89	;
90	}
91		109
92	for (;;)	110	for (;;)
93	{	111	{
94	pthread_mutex_lock (&reslock);	112	pthread_mutex_lock (&reslock);
95
96	req = ress;	113	req = ress;
97		114
98	if (ress)	115	if (req)
99	{	116	{
100	ress = ress->next;	117	ress = req->next;
		118
101	if (!ress) rese = 0;	119	if (!ress)
		120	{
		121	/* read any signals sent by the worker threads */
		122	char buf [32];
		123	while (read (respipe [0], buf, 32) == 32)
		124	;
		125
		126	rese = 0;
		127	}
102	}	128	}
103		129
104	pthread_mutex_unlock (&reslock);	130	pthread_mutex_unlock (&reslock);
105		131
106	if (!req)	132	if (!req)
…		…
114	{	140	{
115	int errorno = errno;	141	int errorno = errno;
116	errno = req->errorno;	142	errno = req->errorno;
117		143
118	if (req->type == REQ_READ)	144	if (req->type == REQ_READ)
119	SvCUR_set (req->data, req->dataoffset	145	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
120	+ req->result > 0 ? req->result : 0);
121		146
		147	if (req->data2ptr && (req->type == REQ_READ \|\| req->type == REQ_WRITE))
		148	SvREADONLY_off (req->data);
		149
122	if (req->data)	150	if (req->statdata)
123	SvREFCNT_dec (req->data);
124
125	if (req->type == REQ_STAT \|\| req->type == REQ_LSTAT \|\| req->type == REQ_FSTAT)
126	{	151	{
127	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	152	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
128	PL_laststatval = req->result;	153	PL_laststatval = req->result;
129	PL_statcache = *(req->statdata);	154	PL_statcache = *(req->statdata);
130
131	Safefree (req->statdata);
132	}	155	}
133		156
		157	ENTER;
134	PUSHMARK (SP);	158	PUSHMARK (SP);
135	XPUSHs (sv_2mortal (newSViv (req->result)));	159	XPUSHs (sv_2mortal (newSViv (req->result)));
136		160
137	if (req->type == REQ_OPEN)	161	if (req->type == REQ_OPEN)
138	{	162	{
…		…
141		165
142	PUTBACK;	166	PUTBACK;
143	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);	167	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);
144	SPAGAIN;	168	SPAGAIN;
145		169
146	fh = POPs;	170	fh = SvREFCNT_inc (POPs);
147		171
148	PUSHMARK (SP);	172	PUSHMARK (SP);
149	XPUSHs (fh);	173	XPUSHs (sv_2mortal (fh));
150	}	174	}
151		175
152	if (SvOK (req->callback))	176	if (SvOK (req->callback))
153	{	177	{
154	PUTBACK;	178	PUTBACK;
155	call_sv (req->callback, G_VOID \| G_EVAL);	179	call_sv (req->callback, G_VOID \| G_EVAL);
156	SPAGAIN;	180	SPAGAIN;
		181
		182	if (SvTRUE (ERRSV))
		183	{
		184	free_req (req);
		185	croak (0);
		186	}
157	}	187	}
		188
158		189	LEAVE;
159	if (req->callback)
160	SvREFCNT_dec (req->callback);
161		190
162	errno = errorno;	191	errno = errorno;
163	count++;	192	count++;
164	}	193	}
165		194
166	Safefree (req);	195	free_req (req);
167	}	196	}
168		197
169	return count;	198	return count;
170	}	199	}
171		200
…		…
178	pthread_t tid;	207	pthread_t tid;
179	pthread_attr_t attr;	208	pthread_attr_t attr;
180		209
181	pthread_attr_init (&attr);	210	pthread_attr_init (&attr);
182	pthread_attr_setstacksize (&attr, STACKSIZE);	211	pthread_attr_setstacksize (&attr, STACKSIZE);
183	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);	212	// pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
184		213
185	sigfillset (&fullsigset);	214	sigfillset (&fullsigset);
186	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);	215	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
187		216
188	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)	217	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
…		…
192	}	221	}
193		222
194	static void	223	static void
195	send_req (aio_req req)	224	send_req (aio_req req)
196	{	225	{
		226	while (started < wanted && nreqs >= started)
		227	start_thread ();
		228
197	nreqs++;	229	nreqs++;
198		230
199	pthread_mutex_lock (&reqlock);	231	pthread_mutex_lock (&reqlock);
200		232
201	req->next = 0;	233	req->next = 0;
…		…
209	reqe = reqs = req;	241	reqe = reqs = req;
210		242
211	pthread_cond_signal (&reqwait);	243	pthread_cond_signal (&reqwait);
212	pthread_mutex_unlock (&reqlock);	244	pthread_mutex_unlock (&reqlock);
213		245
214	while (nreqs > max_outstanding)	246	if (nreqs > max_outstanding)
		247	for (;;)
		248	{
		249	poll_cb ();
		250
		251	if (nreqs <= max_outstanding)
		252	break;
		253
		254	poll_wait ();
		255	}
		256	}
		257
		258	static void
		259	end_thread (void)
		260	{
		261	aio_req req;
		262	Newz (0, req, 1, aio_cb);
		263	req->type = REQ_QUIT;
		264
		265	send_req (req);
		266	}
		267
		268	static void min_parallel (int nthreads)
		269	{
		270	if (wanted < nthreads)
		271	wanted = nthreads;
		272	}
		273
		274	static void max_parallel (int nthreads)
		275	{
		276	int cur = started;
		277
		278	if (wanted > nthreads)
		279	wanted = nthreads;
		280
		281	while (cur > wanted)
		282	{
		283	end_thread ();
		284	cur--;
		285	}
		286
		287	while (started > wanted)
215	{	288	{
216	poll_wait ();	289	poll_wait ();
217	poll_cb ();	290	poll_cb ();
218	}	291	}
219	}	292	}
220		293
221	static void	294	static void create_pipe ()
222	end_thread (void)
223	{	295	{
		296	if (pipe (respipe))
		297	croak ("unable to initialize result pipe");
		298
		299	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
		300	croak ("cannot set result pipe to nonblocking mode");
		301
		302	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
		303	croak ("cannot set result pipe to nonblocking mode");
		304	}
		305
		306	static void atfork_prepare (void)
		307	{
		308	pthread_mutex_lock (&reqlock);
		309	pthread_mutex_lock (&reslock);
		310	}
		311
		312	static void atfork_parent (void)
		313	{
		314	pthread_mutex_unlock (&reslock);
		315	pthread_mutex_unlock (&reqlock);
		316	}
		317
		318	static void atfork_child (void)
		319	{
224	aio_req req;	320	aio_req prv;
225	New (0, req, 1, aio_cb);
226	req->type = REQ_QUIT;
227		321
228	send_req (req);	322	started = 0;
229	}
230		323
231	static void	324	while (reqs)
232	read_write (int dowrite, int fd, off_t offset, size_t length,	325	{
233	SV data, STRLEN dataoffset, SV callback)	326	prv = reqs;
234	{	327	reqs = prv->next;
235	aio_req req;	328	free_req (prv);
236	STRLEN svlen;	329	}
237	char *svptr = SvPV (data, svlen);
238		330
239	SvUPGRADE (data, SVt_PV);	331	reqs = reqe = 0;
240	SvPOK_on (data);	332
		333	while (ress)
		334	{
		335	prv = ress;
		336	ress = prv->next;
		337	free_req (prv);
		338	}
		339
		340	ress = rese = 0;
241		341
242	if (dataoffset < 0)	342	close (respipe [0]);
		343	close (respipe [1]);
		344	create_pipe ();
		345
		346	atfork_parent ();
		347	}
		348
		349	/*****************************************************************************/
		350	/* work around various missing functions */
		351
		352	#if !HAVE_PREADWRITE
		353	# define pread aio_pread
		354	# define pwrite aio_pwrite
		355
		356	/*
		357	* make our pread/pwrite safe against themselves, but not against
		358	* normal read/write by using a mutex. slows down execution a lot,
		359	* but that's your problem, not mine.
		360	*/
		361	static pthread_mutex_t iolock = PTHREAD_MUTEX_INITIALIZER;
		362
		363	static ssize_t
		364	pread (int fd, void *buf, size_t count, off_t offset)
		365	{
		366	ssize_t res;
		367	off_t ooffset;
		368
		369	pthread_mutex_lock (&iolock);
		370	ooffset = lseek (fd, 0, SEEK_CUR);
		371	lseek (fd, offset, SEEK_SET);
		372	res = read (fd, buf, count);
		373	lseek (fd, ooffset, SEEK_SET);
		374	pthread_mutex_unlock (&iolock);
		375
		376	return res;
		377	}
		378
		379	static ssize_t
		380	pwrite (int fd, void *buf, size_t count, off_t offset)
		381	{
		382	ssize_t res;
		383	off_t ooffset;
		384
		385	pthread_mutex_lock (&iolock);
		386	ooffset = lseek (fd, 0, SEEK_CUR);
		387	lseek (fd, offset, SEEK_SET);
		388	res = write (fd, buf, count);
		389	lseek (fd, offset, SEEK_SET);
		390	pthread_mutex_unlock (&iolock);
		391
		392	return res;
		393	}
		394	#endif
		395
		396	#if !HAVE_FDATASYNC
		397	# define fdatasync fsync
		398	#endif
		399
		400	#if !HAVE_READAHEAD
		401	# define readahead aio_readahead
		402
		403	static char readahead_buf[4096];
		404
		405	static ssize_t
		406	readahead (int fd, off_t offset, size_t count)
		407	{
		408	while (count > 0)
		409	{
		410	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
		411
		412	pread (fd, readahead_buf, len, offset);
243	dataoffset += svlen;	413	offset += len;
244		414	count -= len;
245	if (dataoffset < 0 \|\| dataoffset > svlen)
246	croak ("data offset outside of string");
247
248	if (dowrite)
249	{	415	}
250	/* write: check length and adjust. */
251	if (length < 0 \|\| length + dataoffset > svlen)
252	length = svlen - dataoffset;
253	}
254	else
255	{
256	/* read: grow scalar as necessary */
257	svptr = SvGROW (data, length + dataoffset);
258	}
259		416
260	if (length < 0)	417	errno = 0;
261	croak ("length must not be negative");
262
263	Newz (0, req, 1, aio_cb);
264
265	if (!req)
266	croak ("out of memory during aio_req allocation");
267
268	req->type = dowrite ? REQ_WRITE : REQ_READ;
269	req->fd = fd;
270	req->offset = offset;
271	req->length = length;
272	req->data = SvREFCNT_inc (data);
273	req->dataptr = (char *)svptr + dataoffset;
274	req->callback = SvREFCNT_inc (callback);
275
276	send_req (req);
277	}	418	}
		419	#endif
		420
		421	/*****************************************************************************/
278		422
279	static void *	423	static void *
280	aio_proc (void *thr_arg)	424	aio_proc (void *thr_arg)
281	{	425	{
282	aio_req req;	426	aio_req req;
…		…
308		452
309	type = req->type;	453	type = req->type;
310		454
311	switch (type)	455	switch (type)
312	{	456	{
313	case REQ_READ: req->result = pread64 (req->fd, req->dataptr, req->length, req->offset); break;	457	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
314	case REQ_WRITE: req->result = pwrite64 (req->fd, req->dataptr, req->length, req->offset); break;	458	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
315	#if SYS_readahead	459
316	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	460	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
317	#else
318	case REQ_READAHEAD: req->result = -1; errno = ENOSYS; break;
319	#endif
320		461
321	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	462	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
322	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	463	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
323	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	464	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
324		465
325	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;	466	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
326	case REQ_CLOSE: req->result = close (req->fd); break;	467	case REQ_CLOSE: req->result = close (req->fd); break;
327	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	468	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
		469	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
		470	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
328		471
		472	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
329	case REQ_FSYNC: req->result = fsync (req->fd); break;	473	case REQ_FSYNC: req->result = fsync (req->fd); break;
330	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
331		474
332	case REQ_QUIT:	475	case REQ_QUIT:
333	break;	476	break;
334		477
335	default:	478	default:
…		…
361	while (type != REQ_QUIT);	504	while (type != REQ_QUIT);
362		505
363	return 0;	506	return 0;
364	}	507	}
365		508
		509	#define dREQ \
		510	aio_req req; \
		511	\
		512	if (SvOK (callback) && !SvROK (callback)) \
		513	croak ("clalback must be undef or of reference type"); \
		514	\
		515	Newz (0, req, 1, aio_cb); \
		516	if (!req) \
		517	croak ("out of memory during aio_req allocation"); \
		518	\
		519	req->callback = newSVsv (callback);
		520
366	MODULE = IO::AIO PACKAGE = IO::AIO	521	MODULE = IO::AIO PACKAGE = IO::AIO
367		522
368	PROTOTYPES: ENABLE	523	PROTOTYPES: ENABLE
369		524
370	BOOT:	525	BOOT:
371	{	526	{
372	if (pipe (respipe))	527	create_pipe ();
373	croak ("unable to initialize result pipe");	528	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
374
375	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
376	croak ("cannot set result pipe to nonblocking mode");
377
378	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
379	croak ("cannot set result pipe to nonblocking mode");
380	}	529	}
381		530
382	void	531	void
383	min_parallel(nthreads)	532	min_parallel(nthreads)
384	int nthreads	533	int nthreads
385	PROTOTYPE: $	534	PROTOTYPE: $
386	CODE:
387	while (nthreads > started)
388	start_thread ();
389		535
390	void	536	void
391	max_parallel(nthreads)	537	max_parallel(nthreads)
392	int nthreads	538	int nthreads
393	PROTOTYPE: $	539	PROTOTYPE: $
394	CODE:
395	{
396	int cur = started;
397	while (cur > nthreads)
398	{
399	end_thread ();
400	cur--;
401	}
402
403	while (started > nthreads)
404	{
405	poll_wait ();
406	poll_cb ();
407	}
408	}
409		540
410	int	541	int
411	max_outstanding(nreqs)	542	max_outstanding(nreqs)
412	int nreqs	543	int nreqs
413	PROTOTYPE: $	544	PROTOTYPE: $
…		…
422	int mode	553	int mode
423	SV * callback	554	SV * callback
424	PROTOTYPE: $$$;$	555	PROTOTYPE: $$$;$
425	CODE:	556	CODE:
426	{	557	{
427	aio_req req;	558	dREQ;
428
429	Newz (0, req, 1, aio_cb);
430
431	if (!req)
432	croak ("out of memory during aio_req allocation");
433		559
434	req->type = REQ_OPEN;	560	req->type = REQ_OPEN;
435	req->data = newSVsv (pathname);	561	req->data = newSVsv (pathname);
436	req->dataptr = SvPV_nolen (req->data);	562	req->dataptr = SvPVbyte_nolen (req->data);
437	req->fd = flags;	563	req->fd = flags;
438	req->mode = mode;	564	req->mode = mode;
439	req->callback = SvREFCNT_inc (callback);
440		565
441	send_req (req);	566	send_req (req);
442	}	567	}
443		568
444	void	569	void
445	aio_close(fh,callback=&PL_sv_undef)	570	aio_close(fh,callback=&PL_sv_undef)
446	InputStream fh	571	SV * fh
447	SV * callback	572	SV * callback
448	PROTOTYPE: $;$	573	PROTOTYPE: $;$
449	ALIAS:	574	ALIAS:
450	aio_close = REQ_CLOSE	575	aio_close = REQ_CLOSE
451	aio_fsync = REQ_FSYNC	576	aio_fsync = REQ_FSYNC
452	aio_fdatasync = REQ_FDATASYNC	577	aio_fdatasync = REQ_FDATASYNC
453	CODE:	578	CODE:
454	{	579	{
455	aio_req req;	580	dREQ;
456
457	Newz (0, req, 1, aio_cb);
458
459	if (!req)
460	croak ("out of memory during aio_req allocation");
461		581
462	req->type = ix;	582	req->type = ix;
		583	req->fh = newSVsv (fh);
463	req->fd = PerlIO_fileno (fh);	584	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
464	req->callback = SvREFCNT_inc (callback);
465		585
466	send_req (req);	586	send_req (req);
467	}	587	}
468		588
469	void	589	void
470	aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	590	aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
471	InputStream fh	591	SV * fh
472	UV offset	592	UV offset
473	IV length	593	IV length
474	SV * data	594	SV * data
475	IV dataoffset	595	IV dataoffset
476	SV * callback	596	SV * callback
		597	ALIAS:
		598	aio_read = REQ_READ
		599	aio_write = REQ_WRITE
477	PROTOTYPE: $$$$$;$	600	PROTOTYPE: $$$$$;$
478	CODE:	601	CODE:
479	read_write (0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);	602	{
		603	aio_req req;
		604	STRLEN svlen;
		605	char *svptr = SvPVbyte (data, svlen);
480		606
481	void	607	SvUPGRADE (data, SVt_PV);
482	aio_write(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	608	SvPOK_on (data);
483	OutputStream fh	609
484	UV offset	610	if (dataoffset < 0)
485	IV length	611	dataoffset += svlen;
486	SV * data	612
487	IV dataoffset	613	if (dataoffset < 0 \|\| dataoffset > svlen)
488	SV * callback	614	croak ("data offset outside of string");
489	PROTOTYPE: $$$$$;$	615
490	CODE:	616	if (ix == REQ_WRITE)
491	read_write (1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);	617	{
		618	/* write: check length and adjust. */
		619	if (length < 0 \|\| length + dataoffset > svlen)
		620	length = svlen - dataoffset;
		621	}
		622	else
		623	{
		624	/* read: grow scalar as necessary */
		625	svptr = SvGROW (data, length + dataoffset);
		626	}
		627
		628	if (length < 0)
		629	croak ("length must not be negative");
		630
		631	{
		632	dREQ;
		633
		634	req->type = ix;
		635	req->fh = newSVsv (fh);
		636	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
		637	: IoOFP (sv_2io (fh)));
		638	req->offset = offset;
		639	req->length = length;
		640	req->data = SvREFCNT_inc (data);
		641	req->dataptr = (char *)svptr + dataoffset;
		642
		643	if (!SvREADONLY (data))
		644	{
		645	SvREADONLY_on (data);
		646	req->data2ptr = (void *)data;
		647	}
		648
		649	send_req (req);
		650	}
		651	}
492		652
493	void	653	void
494	aio_readahead(fh,offset,length,callback=&PL_sv_undef)	654	aio_readahead(fh,offset,length,callback=&PL_sv_undef)
495	InputStream fh	655	SV * fh
496	UV offset	656	UV offset
497	IV length	657	IV length
498	SV * callback	658	SV * callback
499	PROTOTYPE: $$$;$	659	PROTOTYPE: $$$;$
500	CODE:	660	CODE:
501	{	661	{
502	aio_req req;	662	dREQ;
503
504	if (length < 0)
505	croak ("length must not be negative");
506
507	Newz (0, req, 1, aio_cb);
508
509	if (!req)
510	croak ("out of memory during aio_req allocation");
511		663
512	req->type = REQ_READAHEAD;	664	req->type = REQ_READAHEAD;
		665	req->fh = newSVsv (fh);
513	req->fd = PerlIO_fileno (fh);	666	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
514	req->offset = offset;	667	req->offset = offset;
515	req->length = length;	668	req->length = length;
516	req->callback = SvREFCNT_inc (callback);
517		669
518	send_req (req);	670	send_req (req);
519	}	671	}
520		672
521	void	673	void
…		…
525	ALIAS:	677	ALIAS:
526	aio_stat = REQ_STAT	678	aio_stat = REQ_STAT
527	aio_lstat = REQ_LSTAT	679	aio_lstat = REQ_LSTAT
528	CODE:	680	CODE:
529	{	681	{
530	aio_req req;	682	dREQ;
531
532	Newz (0, req, 1, aio_cb);
533
534	if (!req)
535	croak ("out of memory during aio_req allocation");
536		683
537	New (0, req->statdata, 1, Stat_t);	684	New (0, req->statdata, 1, Stat_t);
538
539	if (!req->statdata)	685	if (!req->statdata)
		686	{
		687	free_req (req);
540	croak ("out of memory during aio_req->statdata allocation");	688	croak ("out of memory during aio_req->statdata allocation");
		689	}
541		690
542	if (SvPOK (fh_or_path))	691	if (SvPOK (fh_or_path))
543	{	692	{
544	req->type = ix;	693	req->type = ix;
545	req->data = newSVsv (fh_or_path);	694	req->data = newSVsv (fh_or_path);
546	req->dataptr = SvPV_nolen (req->data);	695	req->dataptr = SvPVbyte_nolen (req->data);
547	}	696	}
548	else	697	else
549	{	698	{
550	req->type = REQ_FSTAT;	699	req->type = REQ_FSTAT;
		700	req->fh = newSVsv (fh_or_path);
551	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	701	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
552	}	702	}
553
554	req->callback = SvREFCNT_inc (callback);
555		703
556	send_req (req);	704	send_req (req);
557	}	705	}
558		706
559	void	707	void
560	aio_unlink(pathname,callback=&PL_sv_undef)	708	aio_unlink(pathname,callback=&PL_sv_undef)
561	SV * pathname	709	SV * pathname
562	SV * callback	710	SV * callback
		711	ALIAS:
		712	aio_unlink = REQ_UNLINK
		713	aio_rmdir = REQ_RMDIR
563	CODE:	714	CODE:
564	{	715	{
565	aio_req req;	716	dREQ;
566		717
567	Newz (0, req, 1, aio_cb);	718	req->type = ix;
		719	req->data = newSVsv (pathname);
		720	req->dataptr = SvPVbyte_nolen (req->data);
568		721
569	if (!req)	722	send_req (req);
570	croak ("out of memory during aio_req allocation");	723	}
		724
		725	void
		726	aio_symlink(oldpath,newpath,callback=&PL_sv_undef)
		727	SV * oldpath
		728	SV * newpath
		729	SV * callback
		730	CODE:
		731	{
		732	dREQ;
571		733
572	req->type = REQ_UNLINK;	734	req->type = REQ_SYMLINK;
		735	req->fh = newSVsv (oldpath);
		736	req->data2ptr = SvPVbyte_nolen (req->fh);
573	req->data = newSVsv (pathname);	737	req->data = newSVsv (newpath);
574	req->dataptr = SvPV_nolen (req->data);	738	req->dataptr = SvPVbyte_nolen (req->data);
575	req->callback = SvREFCNT_inc (callback);
576		739
577	send_req (req);	740	send_req (req);
578	}	741	}
579		742
580	void	743	void

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Comparing IO-AIO/AIO.xs (file contents): Revision 1.9 by root, Tue Jul 12 11:02:54 2005 UTC vs. Revision 1.30 by root, Thu Aug 18 16:32:10 2005 UTC

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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.9 by root, Tue Jul 12 11:02:54 2005 UTC vs.
Revision 1.30 by root, Thu Aug 18 16:32:10 2005 UTC