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

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.5 by root, Sun Jul 10 23:45:16 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	#include <endian.h>
12		17
13	#include <pthread.h>	18	#include <pthread.h>
14	#include <sys/syscall.h>
15		19
16	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 ;) */
17	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 ;) */
18	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 ;) */
19		23
25		29
26	enum {	30	enum {
27	REQ_QUIT,	31	REQ_QUIT,
28	REQ_OPEN, REQ_CLOSE,	32	REQ_OPEN, REQ_CLOSE,
29	REQ_READ, REQ_WRITE, REQ_READAHEAD,	33	REQ_READ, REQ_WRITE, REQ_READAHEAD,
30	REQ_STAT, REQ_LSTAT, REQ_FSTAT, REQ_UNLINK,	34	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
31	REQ_FSYNC, REQ_FDATASYNC,	35	REQ_FSYNC, REQ_FDATASYNC,
		36	REQ_UNLINK, REQ_RMDIR,
		37	REQ_SYMLINK,
32	};	38	};
33		39
34	typedef struct aio_cb {	40	typedef struct aio_cb {
35	struct aio_cb *volatile next;	41	struct aio_cb *volatile next;
36		42
…		…
40	off_t offset;	46	off_t offset;
41	size_t length;	47	size_t length;
42	ssize_t result;	48	ssize_t result;
43	mode_t mode; /* open */	49	mode_t mode; /* open */
44	int errorno;	50	int errorno;
45	SV data, callback;	51	SV data, callback, *fh;
46	void *dataptr;	52	void dataptr, data2ptr;
47	STRLEN dataoffset;	53	STRLEN dataoffset;
48		54
49	Stat_t *statdata;	55	Stat_t *statdata;
50	} aio_cb;	56	} aio_cb;
51		57
52	typedef aio_cb *aio_req;	58	typedef aio_cb *aio_req;
53		59
54	static int started;	60	static int started, wanted;
55	static int nreqs;	61	static volatile int nreqs;
56	static int max_outstanding = 1<<30;	62	static int max_outstanding = 1<<30;
57	static int respipe [2];	63	static int respipe [2];
58		64
59	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	65	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;
60	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;	66	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
61	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	67	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
62		68
63	static volatile aio_req reqs, reqe; /* queue start, queue end */	69	static volatile aio_req reqs, reqe; /* queue start, queue end */
64	static volatile aio_req ress, rese; /* queue start, queue end */	70	static volatile aio_req ress, rese; /* queue start, queue end */
65		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
66	static void	89	static void
67	poll_wait ()	90	poll_wait ()
68	{	91	{
69	if (!nreqs)	92	if (nreqs && !ress)
70	return;	93	{
71
72	fd_set rfd;	94	fd_set rfd;
73	FD_ZERO(&rfd);	95	FD_ZERO(&rfd);
74	FD_SET(respipe [0], &rfd);	96	FD_SET(respipe [0], &rfd);
75		97
76	select (respipe [0] + 1, &rfd, 0, 0, 0);	98	select (respipe [0] + 1, &rfd, 0, 0, 0);
		99	}
77	}	100	}
78		101
79	static int	102	static int
80	poll_cb ()	103	poll_cb ()
81	{	104	{
82	dSP;	105	dSP;
83	int count = 0;	106	int count = 0;
		107	int do_croak = 0;
84	aio_req req;	108	aio_req req;
85
86	{
87	/* read and signals sent by the worker threads */
88	char buf [32];
89	while (read (respipe [0], buf, 32) > 0)
90	;
91	}
92		109
93	for (;;)	110	for (;;)
94	{	111	{
95	pthread_mutex_lock (&reslock);	112	pthread_mutex_lock (&reslock);
96
97	req = ress;	113	req = ress;
98		114
99	if (ress)	115	if (req)
100	{	116	{
101	ress = ress->next;	117	ress = req->next;
		118
102	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	}
103	}	128	}
104		129
105	pthread_mutex_unlock (&reslock);	130	pthread_mutex_unlock (&reslock);
106		131
107	if (!req)	132	if (!req)
…		…
115	{	140	{
116	int errorno = errno;	141	int errorno = errno;
117	errno = req->errorno;	142	errno = req->errorno;
118		143
119	if (req->type == REQ_READ)	144	if (req->type == REQ_READ)
120	SvCUR_set (req->data, req->dataoffset	145	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
121	+ req->result > 0 ? req->result : 0);
122		146
		147	if (req->data2ptr && (req->type == REQ_READ \|\| req->type == REQ_WRITE))
		148	SvREADONLY_off (req->data);
		149
123	if (req->data)	150	if (req->statdata)
124	SvREFCNT_dec (req->data);
125
126	if (req->type == REQ_STAT \|\| req->type == REQ_LSTAT \|\| req->type == REQ_FSTAT)
127	{	151	{
128	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	152	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
129	PL_laststatval = req->result;	153	PL_laststatval = req->result;
130	PL_statcache = *(req->statdata);	154	PL_statcache = *(req->statdata);
131
132	Safefree (req->statdata);
133	}	155	}
134		156
		157	ENTER;
135	PUSHMARK (SP);	158	PUSHMARK (SP);
136	XPUSHs (sv_2mortal (newSViv (req->result)));	159	XPUSHs (sv_2mortal (newSViv (req->result)));
137		160
138	if (req->type == REQ_OPEN)	161	if (req->type == REQ_OPEN)
139	{	162	{
…		…
142		165
143	PUTBACK;	166	PUTBACK;
144	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);	167	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);
145	SPAGAIN;	168	SPAGAIN;
146		169
147	fh = POPs;	170	fh = SvREFCNT_inc (POPs);
148		171
149	PUSHMARK (SP);	172	PUSHMARK (SP);
150	XPUSHs (fh);	173	XPUSHs (sv_2mortal (fh));
151	}	174	}
152		175
		176	if (SvOK (req->callback))
		177	{
153	PUTBACK;	178	PUTBACK;
154	call_sv (req->callback, G_VOID \| G_EVAL);	179	call_sv (req->callback, G_VOID \| G_EVAL);
155	SPAGAIN;	180	SPAGAIN;
		181
		182	if (SvTRUE (ERRSV))
		183	{
		184	free_req (req);
		185	croak (0);
		186	}
156		187	}
157	if (req->callback)	188
158	SvREFCNT_dec (req->callback);	189	LEAVE;
159		190
160	errno = errorno;	191	errno = errorno;
161	count++;	192	count++;
162	}	193	}
163		194
164	Safefree (req);	195	free_req (req);
165	}	196	}
166		197
167	return count;	198	return count;
168	}	199	}
169		200
…		…
176	pthread_t tid;	207	pthread_t tid;
177	pthread_attr_t attr;	208	pthread_attr_t attr;
178		209
179	pthread_attr_init (&attr);	210	pthread_attr_init (&attr);
180	pthread_attr_setstacksize (&attr, STACKSIZE);	211	pthread_attr_setstacksize (&attr, STACKSIZE);
181	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);	212	// pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
182		213
183	sigfillset (&fullsigset);	214	sigfillset (&fullsigset);
184	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);	215	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
185		216
186	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)	217	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
…		…
190	}	221	}
191		222
192	static void	223	static void
193	send_req (aio_req req)	224	send_req (aio_req req)
194	{	225	{
		226	while (started < wanted && nreqs >= started)
		227	start_thread ();
		228
195	nreqs++;	229	nreqs++;
196		230
197	pthread_mutex_lock (&reqlock);	231	pthread_mutex_lock (&reqlock);
198		232
199	req->next = 0;	233	req->next = 0;
…		…
207	reqe = reqs = req;	241	reqe = reqs = req;
208		242
209	pthread_cond_signal (&reqwait);	243	pthread_cond_signal (&reqwait);
210	pthread_mutex_unlock (&reqlock);	244	pthread_mutex_unlock (&reqlock);
211		245
212	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)
213	{	288	{
214	poll_wait ();	289	poll_wait ();
215	poll_cb ();	290	poll_cb ();
216	}	291	}
217	}	292	}
218		293
219	static void	294	static void create_pipe ()
220	end_thread (void)
221	{	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	{
222	aio_req req;	320	aio_req prv;
223	New (0, req, 1, aio_cb);
224	req->type = REQ_QUIT;
225		321
226	send_req (req);	322	started = 0;
227	}
228		323
229	static void	324	while (reqs)
230	read_write (int dowrite, int fd, off_t offset, size_t length,	325	{
231	SV data, STRLEN dataoffset, SV callback)	326	prv = reqs;
232	{	327	reqs = prv->next;
233	aio_req req;	328	free_req (prv);
234	STRLEN svlen;	329	}
235	char *svptr = SvPV (data, svlen);
236		330
237	SvUPGRADE (data, SVt_PV);	331	reqs = reqe = 0;
238	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;
239		341
240	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);
241	dataoffset += svlen;	413	offset += len;
242		414	count -= len;
243	if (dataoffset < 0 \|\| dataoffset > svlen)
244	croak ("data offset outside of string");
245
246	if (dowrite)
247	{	415	}
248	/* write: check length and adjust. */
249	if (length < 0 \|\| length + dataoffset > svlen)
250	length = svlen - dataoffset;
251	}
252	else
253	{
254	/* read: grow scalar as necessary */
255	svptr = SvGROW (data, length + dataoffset);
256	}
257		416
258	if (length < 0)	417	errno = 0;
259	croak ("length must not be negative");
260
261	Newz (0, req, 1, aio_cb);
262
263	if (!req)
264	croak ("out of memory during aio_req allocation");
265
266	req->type = dowrite ? REQ_WRITE : REQ_READ;
267	req->fd = fd;
268	req->offset = offset;
269	req->length = length;
270	req->data = SvREFCNT_inc (data);
271	req->dataptr = (char *)svptr + dataoffset;
272	req->callback = SvREFCNT_inc (callback);
273
274	send_req (req);
275	}	418	}
		419	#endif
		420
		421	/*****************************************************************************/
276		422
277	static void *	423	static void *
278	aio_proc (void *thr_arg)	424	aio_proc (void *thr_arg)
279	{	425	{
280	aio_req req;	426	aio_req req;
…		…
306		452
307	type = req->type;	453	type = req->type;
308		454
309	switch (type)	455	switch (type)
310	{	456	{
311	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;
312	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;
313	#if SYS_readahead	459
314	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;
315	#else
316	case REQ_READAHEAD: req->result = -1; errno = ENOSYS; break;
317	#endif
318		461
319	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	462	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
320	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	463	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
321	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	464	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
322		465
323	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;
324	case REQ_CLOSE: req->result = close (req->fd); break;	467	case REQ_CLOSE: req->result = close (req->fd); break;
325	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;
326		471
		472	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
327	case REQ_FSYNC: req->result = fsync (req->fd); break;	473	case REQ_FSYNC: req->result = fsync (req->fd); break;
328	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
329		474
330	case REQ_QUIT:	475	case REQ_QUIT:
331	break;	476	break;
332		477
333	default:	478	default:
…		…
359	while (type != REQ_QUIT);	504	while (type != REQ_QUIT);
360		505
361	return 0;	506	return 0;
362	}	507	}
363		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
364	MODULE = IO::AIO PACKAGE = IO::AIO	521	MODULE = IO::AIO PACKAGE = IO::AIO
365		522
		523	PROTOTYPES: ENABLE
		524
366	BOOT:	525	BOOT:
367	{	526	{
368	if (pipe (respipe))	527	create_pipe ();
369	croak ("unable to initialize result pipe");	528	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
370
371	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
372	croak ("cannot set result pipe to nonblocking mode");
373
374	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
375	croak ("cannot set result pipe to nonblocking mode");
376	}	529	}
377		530
378	void	531	void
379	min_parallel(nthreads)	532	min_parallel(nthreads)
380	int nthreads	533	int nthreads
381	PROTOTYPE: $	534	PROTOTYPE: $
382	CODE:
383	while (nthreads > started)
384	start_thread ();
385		535
386	void	536	void
387	max_parallel(nthreads)	537	max_parallel(nthreads)
388	int nthreads	538	int nthreads
389	PROTOTYPE: $	539	PROTOTYPE: $
390	CODE:
391	{
392	int cur = started;
393	while (cur > nthreads)
394	{
395	end_thread ();
396	cur--;
397	}
398
399	while (started > nthreads)
400	{
401	poll_wait ();
402	poll_cb ();
403	}
404	}
405		540
406	int	541	int
407	max_outstanding(nreqs)	542	max_outstanding(nreqs)
408	int nreqs	543	int nreqs
409	PROTOTYPE: $	544	PROTOTYPE: $
410	CODE:	545	CODE:
411	RETVAL = max_outstanding;	546	RETVAL = max_outstanding;
412	max_outstanding = nreqs;	547	max_outstanding = nreqs;
413		548
414	void	549	void
415	aio_open(pathname,flags,mode,callback)	550	aio_open(pathname,flags,mode,callback=&PL_sv_undef)
416	SV * pathname	551	SV * pathname
417	int flags	552	int flags
418	int mode	553	int mode
419	SV * callback	554	SV * callback
420	PROTOTYPE: $$$$	555	PROTOTYPE: $$$;$
421	CODE:	556	CODE:
422	{	557	{
423	aio_req req;	558	dREQ;
424
425	Newz (0, req, 1, aio_cb);
426
427	if (!req)
428	croak ("out of memory during aio_req allocation");
429		559
430	req->type = REQ_OPEN;	560	req->type = REQ_OPEN;
431	req->data = newSVsv (pathname);	561	req->data = newSVsv (pathname);
432	req->dataptr = SvPV_nolen (req->data);	562	req->dataptr = SvPVbyte_nolen (req->data);
433	req->fd = flags;	563	req->fd = flags;
434	req->mode = mode;	564	req->mode = mode;
435	req->callback = SvREFCNT_inc (callback);
436		565
437	send_req (req);	566	send_req (req);
438	}	567	}
439		568
440	void	569	void
441	aio_close(fh,callback)	570	aio_close(fh,callback=&PL_sv_undef)
442	InputStream fh	571	SV * fh
443	SV * callback	572	SV * callback
444	PROTOTYPE: $$	573	PROTOTYPE: $;$
445	ALIAS:	574	ALIAS:
446	aio_close = REQ_CLOSE	575	aio_close = REQ_CLOSE
447	aio_fsync = REQ_FSYNC	576	aio_fsync = REQ_FSYNC
448	aio_fdatasync = REQ_FDATASYNC	577	aio_fdatasync = REQ_FDATASYNC
449	CODE:	578	CODE:
450	{	579	{
		580	dREQ;
		581
		582	req->type = ix;
		583	req->fh = newSVsv (fh);
		584	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
		585
		586	send_req (req);
		587	}
		588
		589	void
		590	aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
		591	SV * fh
		592	UV offset
		593	IV length
		594	SV * data
		595	IV dataoffset
		596	SV * callback
		597	ALIAS:
		598	aio_read = REQ_READ
		599	aio_write = REQ_WRITE
		600	PROTOTYPE: $$$$$;$
		601	CODE:
		602	{
451	aio_req req;	603	aio_req req;
		604	STRLEN svlen;
		605	char *svptr = SvPVbyte (data, svlen);
452		606
453	Newz (0, req, 1, aio_cb);	607	SvUPGRADE (data, SVt_PV);
		608	SvPOK_on (data);
454		609
455	if (!req)	610	if (dataoffset < 0)
456	croak ("out of memory during aio_req allocation");	611	dataoffset += svlen;
457		612
458	req->type = ix;	613	if (dataoffset < 0 \|\| dataoffset > svlen)
459	req->fd = PerlIO_fileno (fh);	614	croak ("data offset outside of string");
460	req->callback = SvREFCNT_inc (callback);
461		615
462	send_req (req);	616	if (ix == REQ_WRITE)
463	}	617	{
464		618	/* write: check length and adjust. */
465	void	619	if (length < 0 \|\| length + dataoffset > svlen)
466	aio_read(fh,offset,length,data,dataoffset,callback)	620	length = svlen - dataoffset;
467	InputStream fh	621	}
468	UV offset	622	else
469	IV length	623	{
470	SV * data	624	/* read: grow scalar as necessary */
471	IV dataoffset	625	svptr = SvGROW (data, length + dataoffset);
472	SV * callback	626	}
473	PROTOTYPE: $$$$$$
474	CODE:
475	read_write (0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
476
477	void
478	aio_write(fh,offset,length,data,dataoffset,callback)
479	OutputStream fh
480	UV offset
481	IV length
482	SV * data
483	IV dataoffset
484	SV * callback
485	PROTOTYPE: $$$$$$
486	CODE:
487	read_write (1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
488
489	void
490	aio_readahead(fh,offset,length,callback)
491	InputStream fh
492	UV offset
493	IV length
494	SV * callback
495	PROTOTYPE: $$$$
496	CODE:
497	{
498	aio_req req;
499		627
500	if (length < 0)	628	if (length < 0)
501	croak ("length must not be negative");	629	croak ("length must not be negative");
502		630
503	Newz (0, req, 1, aio_cb);	631	{
		632	dREQ;
504		633
505	if (!req)	634	req->type = ix;
506	croak ("out of memory during aio_req allocation");	635	req->fh = newSVsv (fh);
		636	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
		637	: IoOFP (sv_2io (fh)));
		638	req->offset = offset;
		639	req->length = length;
		640	req->data = SvREFCNT_inc (data);
		641	req->dataptr = (char *)svptr + dataoffset;
		642
		643	if (!SvREADONLY (data))
		644	{
		645	SvREADONLY_on (data);
		646	req->data2ptr = (void *)data;
		647	}
		648
		649	send_req (req);
		650	}
		651	}
		652
		653	void
		654	aio_readahead(fh,offset,length,callback=&PL_sv_undef)
		655	SV * fh
		656	UV offset
		657	IV length
		658	SV * callback
		659	PROTOTYPE: $$$;$
		660	CODE:
		661	{
		662	dREQ;
507		663
508	req->type = REQ_READAHEAD;	664	req->type = REQ_READAHEAD;
		665	req->fh = newSVsv (fh);
509	req->fd = PerlIO_fileno (fh);	666	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
510	req->offset = offset;	667	req->offset = offset;
511	req->length = length;	668	req->length = length;
512	req->callback = SvREFCNT_inc (callback);
513		669
514	send_req (req);	670	send_req (req);
515	}	671	}
516		672
517	void	673	void
518	aio_stat(fh_or_path,callback)	674	aio_stat(fh_or_path,callback=&PL_sv_undef)
519	SV * fh_or_path	675	SV * fh_or_path
520	SV * callback	676	SV * callback
521	PROTOTYPE: $$
522	ALIAS:	677	ALIAS:
		678	aio_stat = REQ_STAT
523	aio_lstat = 1	679	aio_lstat = REQ_LSTAT
524	CODE:	680	CODE:
525	{	681	{
526	aio_req req;	682	dREQ;
527
528	Newz (0, req, 1, aio_cb);
529
530	if (!req)
531	croak ("out of memory during aio_req allocation");
532		683
533	New (0, req->statdata, 1, Stat_t);	684	New (0, req->statdata, 1, Stat_t);
534
535	if (!req->statdata)	685	if (!req->statdata)
		686	{
		687	free_req (req);
536	croak ("out of memory during aio_req->statdata allocation");	688	croak ("out of memory during aio_req->statdata allocation");
		689	}
537		690
538	if (SvPOK (fh_or_path))	691	if (SvPOK (fh_or_path))
539	{	692	{
540	req->type = ix ? REQ_LSTAT : REQ_STAT;	693	req->type = ix;
541	req->data = newSVsv (fh_or_path);	694	req->data = newSVsv (fh_or_path);
542	req->dataptr = SvPV_nolen (req->data);	695	req->dataptr = SvPVbyte_nolen (req->data);
543	}	696	}
544	else	697	else
545	{	698	{
546	req->type = REQ_FSTAT;	699	req->type = REQ_FSTAT;
		700	req->fh = newSVsv (fh_or_path);
547	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	701	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
548	}	702	}
549		703
550	req->callback = SvREFCNT_inc (callback);
551
552	send_req (req);	704	send_req (req);
553	}	705	}
554		706
555	void	707	void
556	aio_unlink(pathname,callback)	708	aio_unlink(pathname,callback=&PL_sv_undef)
557	SV * pathname	709	SV * pathname
558	SV * callback	710	SV * callback
559	PROTOTYPE: $$	711	ALIAS:
		712	aio_unlink = REQ_UNLINK
		713	aio_rmdir = REQ_RMDIR
560	CODE:	714	CODE:
561	{	715	{
562	aio_req req;	716	dREQ;
563		717
564	Newz (0, req, 1, aio_cb);	718	req->type = ix;
565
566	if (!req)
567	croak ("out of memory during aio_req allocation");
568
569	req->type = REQ_UNLINK;
570	req->data = newSVsv (pathname);	719	req->data = newSVsv (pathname);
571	req->dataptr = SvPV_nolen (req->data);	720	req->dataptr = SvPVbyte_nolen (req->data);
572	req->callback = SvREFCNT_inc (callback);
573		721
574	send_req (req);	722	send_req (req);
575	}	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;
		733
		734	req->type = REQ_SYMLINK;
		735	req->fh = newSVsv (oldpath);
		736	req->data2ptr = SvPVbyte_nolen (req->fh);
		737	req->data = newSVsv (newpath);
		738	req->dataptr = SvPVbyte_nolen (req->data);
		739
		740	send_req (req);
		741	}
		742
		743	void
		744	flush()
		745	PROTOTYPE:
		746	CODE:
		747	while (nreqs)
		748	{
		749	poll_wait ();
		750	poll_cb ();
		751	}
		752
		753	void
		754	poll()
		755	PROTOTYPE:
		756	CODE:
		757	if (nreqs)
		758	{
		759	poll_wait ();
		760	poll_cb ();
		761	}
576		762
577	int	763	int
578	poll_fileno()	764	poll_fileno()
579	PROTOTYPE:	765	PROTOTYPE:
580	CODE:	766	CODE:

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Comparing IO-AIO/AIO.xs (file contents): Revision 1.5 by root, Sun Jul 10 23:45:16 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 1.5 by root, Sun Jul 10 23:45:16 2005 UTC vs.
Revision 1.30 by root, Thu Aug 18 16:32:10 2005 UTC