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

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.10 by root, Wed Jul 13 00:13:09 2005 UTC vs.
Revision 1.39 by root, Mon Feb 6 23:54:12 2006 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
5	#define _XOPEN_SOURCE 500	8	#include "autoconf/config.h"
6		9
		10	#include <pthread.h>
		11
		12	#include <stddef.h>
7	#include <sys/types.h>	13	#include <sys/types.h>
8	#include <sys/stat.h>	14	#include <sys/stat.h>
9		15	#include <limits.h>
10	#include <unistd.h>	16	#include <unistd.h>
11	#include <fcntl.h>	17	#include <fcntl.h>
12	#include <signal.h>	18	#include <signal.h>
13	#include <sched.h>	19	#include <sched.h>
		20
		21	#if HAVE_SENDFILE
14	#if __linux	22	# if __linux
		23	# include <sys/sendfile.h>
		24	# elif __freebsd
15	#include <sys/syscall.h>	25	# include <sys/socket.h>
		26	# include <sys/uio.h>
		27	# elif __hpux
		28	# include <sys/socket.h>
		29	# elif __solaris /* not yet */
		30	# include <sys/sendfile.h>
		31	# else
		32	# error sendfile support requested but not available
16	#endif	33	# endif
		34	#endif
17		35
18	#include <pthread.h>	36	/* used for struct dirent, AIX doesn't provide it */
19		37	#ifndef NAME_MAX
20	typedef void InputStream; / hack, but 5.6.1 is simply toooo old ;) */	38	# define NAME_MAX 4096
21	typedef void OutputStream; / hack, but 5.6.1 is simply toooo old ;) */	39	#endif
22	typedef void InOutStream; / hack, but 5.6.1 is simply toooo old ;) */
23		40
24	#if __ia64	41	#if __ia64
25	# define STACKSIZE 65536	42	# define STACKSIZE 65536
26	#else	43	#else
27	# define STACKSIZE 4096	44	# define STACKSIZE 8192
28	#endif	45	#endif
29		46
30	enum {	47	enum {
31	REQ_QUIT,	48	REQ_QUIT,
32	REQ_OPEN, REQ_CLOSE,	49	REQ_OPEN, REQ_CLOSE,
33	REQ_READ, REQ_WRITE, REQ_READAHEAD,	50	REQ_READ, REQ_WRITE, REQ_READAHEAD,
		51	REQ_SENDFILE,
34	REQ_STAT, REQ_LSTAT, REQ_FSTAT, REQ_UNLINK,	52	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
35	REQ_FSYNC, REQ_FDATASYNC,	53	REQ_FSYNC, REQ_FDATASYNC,
		54	REQ_UNLINK, REQ_RMDIR,
		55	REQ_READDIR,
		56	REQ_SYMLINK,
36	};	57	};
37		58
38	typedef struct aio_cb {	59	typedef struct aio_cb {
39	struct aio_cb *volatile next;	60	struct aio_cb *volatile next;
40		61
41	int type;	62	int type;
42		63
		64	/* should receive a cleanup, with unions */
43	int fd;	65	int fd, fd2;
44	off_t offset;	66	off_t offset;
45	size_t length;	67	size_t length;
46	ssize_t result;	68	ssize_t result;
47	mode_t mode; /* open */	69	mode_t mode; /* open */
48	int errorno;	70	int errorno;
49	SV data, callback;	71	SV data, callback;
50	void *dataptr;	72	SV fh, fh2;
		73	void dataptr, data2ptr;
51	STRLEN dataoffset;	74	STRLEN dataoffset;
52		75
53	Stat_t *statdata;	76	Stat_t *statdata;
54	} aio_cb;	77	} aio_cb;
55		78
56	typedef aio_cb *aio_req;	79	typedef aio_cb *aio_req;
57		80
58	static int started;	81	static int started, wanted;
59	static int nreqs;	82	static volatile int nreqs;
60	static int max_outstanding = 1<<30;	83	static int max_outstanding = 1<<30;
61	static int respipe [2];	84	static int respipe [2];
62		85
63	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	86	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;
64	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;	87	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
65	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	88	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
66		89
67	static volatile aio_req reqs, reqe; /* queue start, queue end */	90	static volatile aio_req reqs, reqe; /* queue start, queue end */
68	static volatile aio_req ress, rese; /* queue start, queue end */	91	static volatile aio_req ress, rese; /* queue start, queue end */
69		92
		93	static void free_req (aio_req req)
		94	{
		95	if (req->data)
		96	SvREFCNT_dec (req->data);
		97
		98	if (req->fh)
		99	SvREFCNT_dec (req->fh);
		100
		101	if (req->fh2)
		102	SvREFCNT_dec (req->fh2);
		103
		104	if (req->statdata)
		105	Safefree (req->statdata);
		106
		107	if (req->callback)
		108	SvREFCNT_dec (req->callback);
		109
		110	if (req->type == REQ_READDIR && req->result >= 0)
		111	free (req->data2ptr);
		112
		113	Safefree (req);
		114	}
		115
70	static void	116	static void
71	poll_wait ()	117	poll_wait ()
72	{	118	{
73	if (!nreqs)	119	if (nreqs && !ress)
74	return;	120	{
75
76	fd_set rfd;	121	fd_set rfd;
77	FD_ZERO(&rfd);	122	FD_ZERO(&rfd);
78	FD_SET(respipe [0], &rfd);	123	FD_SET(respipe [0], &rfd);
79		124
80	select (respipe [0] + 1, &rfd, 0, 0, 0);	125	select (respipe [0] + 1, &rfd, 0, 0, 0);
		126	}
81	}	127	}
82		128
83	static int	129	static int
84	poll_cb ()	130	poll_cb ()
85	{	131	{
86	dSP;	132	dSP;
87	int count = 0;	133	int count = 0;
		134	int do_croak = 0;
88	aio_req req;	135	aio_req req;
89
90	{
91	/* read and signals sent by the worker threads */
92	char buf [32];
93	while (read (respipe [0], buf, 32) > 0)
94	;
95	}
96		136
97	for (;;)	137	for (;;)
98	{	138	{
99	pthread_mutex_lock (&reslock);	139	pthread_mutex_lock (&reslock);
100
101	req = ress;	140	req = ress;
102		141
103	if (ress)	142	if (req)
104	{	143	{
105	ress = ress->next;	144	ress = req->next;
		145
106	if (!ress) rese = 0;	146	if (!ress)
		147	{
		148	/* read any signals sent by the worker threads */
		149	char buf [32];
		150	while (read (respipe [0], buf, 32) == 32)
		151	;
		152
		153	rese = 0;
		154	}
107	}	155	}
108		156
109	pthread_mutex_unlock (&reslock);	157	pthread_mutex_unlock (&reslock);
110		158
111	if (!req)	159	if (!req)
119	{	167	{
120	int errorno = errno;	168	int errorno = errno;
121	errno = req->errorno;	169	errno = req->errorno;
122		170
123	if (req->type == REQ_READ)	171	if (req->type == REQ_READ)
124	SvCUR_set (req->data, req->dataoffset	172	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
125	+ req->result > 0 ? req->result : 0);
126		173
		174	if (req->data2ptr && (req->type == REQ_READ \|\| req->type == REQ_WRITE))
		175	SvREADONLY_off (req->data);
		176
127	if (req->data)	177	if (req->statdata)
128	SvREFCNT_dec (req->data);
129
130	if (req->type == REQ_STAT \|\| req->type == REQ_LSTAT \|\| req->type == REQ_FSTAT)
131	{	178	{
132	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	179	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
133	PL_laststatval = req->result;	180	PL_laststatval = req->result;
134	PL_statcache = *(req->statdata);	181	PL_statcache = *(req->statdata);
135
136	Safefree (req->statdata);
137	}	182	}
138		183
		184	ENTER;
139	PUSHMARK (SP);	185	PUSHMARK (SP);
140	XPUSHs (sv_2mortal (newSViv (req->result)));
141		186
142	if (req->type == REQ_OPEN)	187	if (req->type == REQ_READDIR)
143	{	188	{
		189	SV *rv = &PL_sv_undef;
		190
		191	if (req->result >= 0)
		192	{
		193	char *buf = req->data2ptr;
		194	AV *av = newAV ();
		195
		196	while (req->result)
		197	{
		198	SV *sv = newSVpv (buf, 0);
		199
		200	av_push (av, sv);
		201	buf += SvCUR (sv) + 1;
		202	req->result--;
		203	}
		204
		205	rv = sv_2mortal (newRV_noinc ((SV *)av));
		206	}
		207
		208	XPUSHs (rv);
		209	}
		210	else
		211	{
		212	XPUSHs (sv_2mortal (newSViv (req->result)));
		213
		214	if (req->type == REQ_OPEN)
		215	{
144	/* convert fd to fh */	216	/* convert fd to fh */
145	SV *fh;	217	SV *fh;
146		218
147	PUTBACK;	219	PUTBACK;
148	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);	220	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);
149	SPAGAIN;	221	SPAGAIN;
150		222
151	fh = POPs;	223	fh = SvREFCNT_inc (POPs);
152		224
153	PUSHMARK (SP);	225	PUSHMARK (SP);
154	XPUSHs (fh);	226	XPUSHs (sv_2mortal (fh));
		227	}
155	}	228	}
156		229
157	if (SvOK (req->callback))	230	if (SvOK (req->callback))
158	{	231	{
159	PUTBACK;	232	PUTBACK;
160	call_sv (req->callback, G_VOID \| G_EVAL);	233	call_sv (req->callback, G_VOID \| G_EVAL);
161	SPAGAIN;	234	SPAGAIN;
		235
		236	if (SvTRUE (ERRSV))
		237	{
		238	free_req (req);
		239	croak (0);
		240	}
162	}	241	}
		242
163		243	LEAVE;
164	if (req->callback)
165	SvREFCNT_dec (req->callback);
166		244
167	errno = errorno;	245	errno = errorno;
168	count++;	246	count++;
169	}	247	}
170		248
171	Safefree (req);	249	free_req (req);
172	}	250	}
173		251
174	return count;	252	return count;
175	}	253	}
176		254
…		…
197	}	275	}
198		276
199	static void	277	static void
200	send_req (aio_req req)	278	send_req (aio_req req)
201	{	279	{
		280	while (started < wanted && nreqs >= started)
		281	start_thread ();
		282
202	nreqs++;	283	nreqs++;
203		284
204	pthread_mutex_lock (&reqlock);	285	pthread_mutex_lock (&reqlock);
205		286
206	req->next = 0;	287	req->next = 0;
…		…
214	reqe = reqs = req;	295	reqe = reqs = req;
215		296
216	pthread_cond_signal (&reqwait);	297	pthread_cond_signal (&reqwait);
217	pthread_mutex_unlock (&reqlock);	298	pthread_mutex_unlock (&reqlock);
218		299
219	while (nreqs > max_outstanding)	300	if (nreqs > max_outstanding)
		301	for (;;)
		302	{
		303	poll_cb ();
		304
		305	if (nreqs <= max_outstanding)
		306	break;
		307
		308	poll_wait ();
		309	}
		310	}
		311
		312	static void
		313	end_thread (void)
		314	{
		315	aio_req req;
		316	Newz (0, req, 1, aio_cb);
		317	req->type = REQ_QUIT;
		318
		319	send_req (req);
		320	}
		321
		322	static void min_parallel (int nthreads)
		323	{
		324	if (wanted < nthreads)
		325	wanted = nthreads;
		326	}
		327
		328	static void max_parallel (int nthreads)
		329	{
		330	int cur = started;
		331
		332	if (wanted > nthreads)
		333	wanted = nthreads;
		334
		335	while (cur > wanted)
		336	{
		337	end_thread ();
		338	cur--;
		339	}
		340
		341	while (started > wanted)
220	{	342	{
221	poll_wait ();	343	poll_wait ();
222	poll_cb ();	344	poll_cb ();
223	}	345	}
224	}	346	}
225		347
226	static void	348	static void create_pipe ()
227	end_thread (void)
228	{	349	{
229	aio_req req;	350	if (pipe (respipe))
230	New (0, req, 1, aio_cb);	351	croak ("unable to initialize result pipe");
231	req->type = REQ_QUIT;
232		352
233	send_req (req);	353	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
234	}	354	croak ("cannot set result pipe to nonblocking mode");
235		355
236	static void	356	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
237	read_write (int dowrite, int fd, off_t offset, size_t length,	357	croak ("cannot set result pipe to nonblocking mode");
238	SV data, STRLEN dataoffset, SV callback)	358	}
239	{
240	aio_req req;
241	STRLEN svlen;
242	char *svptr = SvPV (data, svlen);
243		359
244	SvUPGRADE (data, SVt_PV);	360	/*****************************************************************************/
245	SvPOK_on (data);	361	/* work around various missing functions */
246		362
247	if (dataoffset < 0)	363	#if !HAVE_PREADWRITE
		364	# define pread aio_pread
		365	# define pwrite aio_pwrite
		366
		367	/*
		368	* make our pread/pwrite safe against themselves, but not against
		369	* normal read/write by using a mutex. slows down execution a lot,
		370	* but that's your problem, not mine.
		371	*/
		372	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
		373
		374	static ssize_t
		375	pread (int fd, void *buf, size_t count, off_t offset)
		376	{
		377	ssize_t res;
		378	off_t ooffset;
		379
		380	pthread_mutex_lock (&preadwritelock);
		381	ooffset = lseek (fd, 0, SEEK_CUR);
		382	lseek (fd, offset, SEEK_SET);
		383	res = read (fd, buf, count);
		384	lseek (fd, ooffset, SEEK_SET);
		385	pthread_mutex_unlock (&preadwritelock);
		386
		387	return res;
		388	}
		389
		390	static ssize_t
		391	pwrite (int fd, void *buf, size_t count, off_t offset)
		392	{
		393	ssize_t res;
		394	off_t ooffset;
		395
		396	pthread_mutex_lock (&preadwritelock);
		397	ooffset = lseek (fd, 0, SEEK_CUR);
		398	lseek (fd, offset, SEEK_SET);
		399	res = write (fd, buf, count);
		400	lseek (fd, offset, SEEK_SET);
		401	pthread_mutex_unlock (&preadwritelock);
		402
		403	return res;
		404	}
		405	#endif
		406
		407	#if !HAVE_FDATASYNC
		408	# define fdatasync fsync
		409	#endif
		410
		411	#if !HAVE_READAHEAD
		412	# define readahead aio_readahead
		413
		414	static ssize_t
		415	readahead (int fd, off_t offset, size_t count)
		416	{
		417	char readahead_buf[4096];
		418
		419	while (count > 0)
		420	{
		421	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
		422
		423	pread (fd, readahead_buf, len, offset);
248	dataoffset += svlen;	424	offset += len;
249		425	count -= len;
250	if (dataoffset < 0 \|\| dataoffset > svlen)
251	croak ("data offset outside of string");
252
253	if (dowrite)
254	{	426	}
255	/* write: check length and adjust. */	427
256	if (length < 0 \|\| length + dataoffset > svlen)	428	errno = 0;
257	length = svlen - dataoffset;	429	}
		430	#endif
		431
		432	#if !HAVE_READDIR_R
		433	# define readdir_r aio_readdir_r
		434
		435	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
		436
		437	static int
		438	readdir_r (DIR dirp, struct dirent ent, struct dirent **res)
		439	{
		440	struct dirent *e;
		441	int errorno;
		442
		443	pthread_mutex_lock (&readdirlock);
		444
		445	e = readdir (dirp);
		446	errorno = errno;
		447
		448	if (e)
		449	{
		450	*res = ent;
		451	strcpy (ent->d_name, e->d_name);
258	}	452	}
259	else	453	else
		454	*res = 0;
		455
		456	pthread_mutex_unlock (&readdirlock);
		457
		458	errno = errorno;
		459	return e ? 0 : -1;
		460	}
		461	#endif
		462
		463	/* sendfile always needs emulation */
		464	static ssize_t
		465	sendfile_ (int ofd, int ifd, off_t offset, size_t count)
		466	{
		467	ssize_t res;
		468
		469	if (!count)
		470	return 0;
		471
		472	#if HAVE_SENDFILE
		473	# if __linux
		474	res = sendfile (ofd, ifd, &offset, count);
		475
		476	# elif __freebsd
		477	/*
		478	* Of course, the freebsd sendfile is a dire hack with no thoughts
		479	* wasted on making it similar to other I/O functions.
		480	*/
260	{	481	{
261	/* read: grow scalar as necessary */	482	off_t sbytes;
262	svptr = SvGROW (data, length + dataoffset);	483	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
		484
		485	if (res < 0 && sbytes)
		486	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
		487	res = sbytes;
		488	}
		489
		490	# elif __hpux
		491	res = sendfile (ofd, ifd, offset, count, 0, 0);
		492
		493	# elif __solaris
		494	{
		495	struct sendfilevec vec;
		496	size_t sbytes;
		497
		498	vec.sfv_fd = ifd;
		499	vec.sfv_flag = 0;
		500	vec.sfv_off = offset;
		501	vec.sfv_len = count;
		502
		503	res = sendfilev (ofd, &vec, 1, &sbytes);
		504
		505	if (res < 0 && sbytes)
		506	res = sbytes;
		507	}
		508
		509	# endif
		510	#else
		511	res = -1;
		512	errno = ENOSYS;
		513	#endif
		514
		515	if (res < 0
		516	&& (errno == ENOSYS \|\| errno == EINVAL \|\| errno == ENOTSOCK
		517	#if __solaris
		518	\|\| errno == EAFNOSUPPORT \|\| errno == EPROTOTYPE
		519	#endif
		520	)
		521	)
263	}	522	{
		523	/* emulate sendfile. this is a major pain in the ass */
		524	char buf[4096];
		525	res = 0;
264		526
265	if (length < 0)	527	while (count)
266	croak ("length must not be negative");	528	{
		529	ssize_t cnt;
		530
		531	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);
267		532
268	Newz (0, req, 1, aio_cb);	533	if (cnt <= 0)
		534	{
		535	if (cnt && !res) res = -1;
		536	break;
		537	}
269		538
		539	cnt = write (ofd, buf, cnt);
		540
		541	if (cnt <= 0)
		542	{
		543	if (cnt && !res) res = -1;
		544	break;
		545	}
		546
		547	offset += cnt;
		548	res += cnt;
		549	count -= cnt;
		550	}
		551	}
		552
		553	return res;
		554	}
		555
		556	/* read a full directory */
		557	static int
		558	scandir_ (const char path, void *namesp)
		559	{
		560	DIR *dirp = opendir (path);
		561	union
		562	{
		563	struct dirent d;
		564	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
		565	} u;
		566	struct dirent *entp;
		567	char name, names;
		568	int memlen = 4096;
		569	int memofs = 0;
		570	int res = 0;
		571	int errorno;
		572
270	if (!req)	573	if (!dirp)
271	croak ("out of memory during aio_req allocation");	574	return -1;
272		575
273	req->type = dowrite ? REQ_WRITE : REQ_READ;	576	names = malloc (memlen);
274	req->fd = fd;
275	req->offset = offset;
276	req->length = length;
277	req->data = SvREFCNT_inc (data);
278	req->dataptr = (char *)svptr + dataoffset;
279	req->callback = SvREFCNT_inc (callback);
280		577
281	send_req (req);	578	for (;;)
		579	{
		580	errno = 0, readdir_r (dirp, &u.d, &entp);
		581
		582	if (!entp)
		583	break;
		584
		585	name = entp->d_name;
		586
		587	if (name [0] != '.' \|\| (name [1] && (name [1] != '.' \|\| name [2])))
		588	{
		589	int len = strlen (name) + 1;
		590
		591	res++;
		592
		593	while (memofs + len > memlen)
		594	{
		595	memlen *= 2;
		596	names = realloc (names, memlen);
		597	if (!names)
		598	break;
		599	}
		600
		601	memcpy (names + memofs, name, len);
		602	memofs += len;
		603	}
		604	}
		605
		606	errorno = errno;
		607	closedir (dirp);
		608
		609	if (errorno)
		610	{
		611	free (names);
		612	errno = errorno;
		613	res = -1;
		614	}
		615
		616	namesp = (void )names;
		617	return res;
282	}	618	}
		619
		620	/*****************************************************************************/
283		621
284	static void *	622	static void *
285	aio_proc (void *thr_arg)	623	aio_proc (void *thr_arg)
286	{	624	{
287	aio_req req;	625	aio_req req;
…		…
315		653
316	switch (type)	654	switch (type)
317	{	655	{
318	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;	656	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
319	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;	657	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
320	#if SYS_readahead	658
321	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	659	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
322	#else	660	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
323	case REQ_READAHEAD: req->result = -1; errno = ENOSYS; break;
324	#endif
325		661
326	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	662	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
327	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	663	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
328	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	664	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
329		665
330	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;	666	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
331	case REQ_CLOSE: req->result = close (req->fd); break;	667	case REQ_CLOSE: req->result = close (req->fd); break;
332	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	668	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
		669	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
		670	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
333		671
		672	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
334	case REQ_FSYNC: req->result = fsync (req->fd); break;	673	case REQ_FSYNC: req->result = fsync (req->fd); break;
335	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	674	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
336		675
337	case REQ_QUIT:	676	case REQ_QUIT:
338	break;	677	break;
339		678
340	default:	679	default:
…		…
366	while (type != REQ_QUIT);	705	while (type != REQ_QUIT);
367		706
368	return 0;	707	return 0;
369	}	708	}
370		709
		710	/*****************************************************************************/
		711
		712	static void atfork_prepare (void)
		713	{
		714	pthread_mutex_lock (&reqlock);
		715	pthread_mutex_lock (&reslock);
		716	#if !HAVE_PREADWRITE
		717	pthread_mutex_lock (&preadwritelock);
		718	#endif
		719	#if !HAVE_READDIR_R
		720	pthread_mutex_lock (&readdirlock);
		721	#endif
		722	}
		723
		724	static void atfork_parent (void)
		725	{
		726	#if !HAVE_READDIR_R
		727	pthread_mutex_unlock (&readdirlock);
		728	#endif
		729	#if !HAVE_PREADWRITE
		730	pthread_mutex_unlock (&preadwritelock);
		731	#endif
		732	pthread_mutex_unlock (&reslock);
		733	pthread_mutex_unlock (&reqlock);
		734	}
		735
		736	static void atfork_child (void)
		737	{
		738	aio_req prv;
		739
		740	started = 0;
		741
		742	while (reqs)
		743	{
		744	prv = reqs;
		745	reqs = prv->next;
		746	free_req (prv);
		747	}
		748
		749	reqs = reqe = 0;
		750
		751	while (ress)
		752	{
		753	prv = ress;
		754	ress = prv->next;
		755	free_req (prv);
		756	}
		757
		758	ress = rese = 0;
		759
		760	close (respipe [0]);
		761	close (respipe [1]);
		762	create_pipe ();
		763
		764	atfork_parent ();
		765	}
		766
		767	#define dREQ \
		768	aio_req req; \
		769	\
		770	if (SvOK (callback) && !SvROK (callback)) \
		771	croak ("clalback must be undef or of reference type"); \
		772	\
		773	Newz (0, req, 1, aio_cb); \
		774	if (!req) \
		775	croak ("out of memory during aio_req allocation"); \
		776	\
		777	req->callback = newSVsv (callback);
		778
371	MODULE = IO::AIO PACKAGE = IO::AIO	779	MODULE = IO::AIO PACKAGE = IO::AIO
372		780
373	PROTOTYPES: ENABLE	781	PROTOTYPES: ENABLE
374		782
375	BOOT:	783	BOOT:
376	{	784	{
377	if (pipe (respipe))	785	create_pipe ();
378	croak ("unable to initialize result pipe");	786	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
379
380	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
381	croak ("cannot set result pipe to nonblocking mode");
382
383	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
384	croak ("cannot set result pipe to nonblocking mode");
385	}	787	}
386		788
387	void	789	void
388	min_parallel(nthreads)	790	min_parallel(nthreads)
389	int nthreads	791	int nthreads
390	PROTOTYPE: $	792	PROTOTYPE: $
391	CODE:
392	while (nthreads > started)
393	start_thread ();
394		793
395	void	794	void
396	max_parallel(nthreads)	795	max_parallel(nthreads)
397	int nthreads	796	int nthreads
398	PROTOTYPE: $	797	PROTOTYPE: $
399	CODE:
400	{
401	int cur = started;
402	while (cur > nthreads)
403	{
404	end_thread ();
405	cur--;
406	}
407
408	while (started > nthreads)
409	{
410	poll_wait ();
411	poll_cb ();
412	}
413	}
414		798
415	int	799	int
416	max_outstanding(nreqs)	800	max_outstanding(nreqs)
417	int nreqs	801	int nreqs
418	PROTOTYPE: $	802	PROTOTYPE: $
…		…
427	int mode	811	int mode
428	SV * callback	812	SV * callback
429	PROTOTYPE: $$$;$	813	PROTOTYPE: $$$;$
430	CODE:	814	CODE:
431	{	815	{
432	aio_req req;	816	dREQ;
433
434	Newz (0, req, 1, aio_cb);
435
436	if (!req)
437	croak ("out of memory during aio_req allocation");
438		817
439	req->type = REQ_OPEN;	818	req->type = REQ_OPEN;
440	req->data = newSVsv (pathname);	819	req->data = newSVsv (pathname);
441	req->dataptr = SvPV_nolen (req->data);	820	req->dataptr = SvPVbyte_nolen (req->data);
442	req->fd = flags;	821	req->fd = flags;
443	req->mode = mode;	822	req->mode = mode;
444	req->callback = SvREFCNT_inc (callback);
445		823
446	send_req (req);	824	send_req (req);
447	}	825	}
448		826
449	void	827	void
450	aio_close(fh,callback=&PL_sv_undef)	828	aio_close(fh,callback=&PL_sv_undef)
451	InputStream fh	829	SV * fh
452	SV * callback	830	SV * callback
453	PROTOTYPE: $;$	831	PROTOTYPE: $;$
454	ALIAS:	832	ALIAS:
455	aio_close = REQ_CLOSE	833	aio_close = REQ_CLOSE
456	aio_fsync = REQ_FSYNC	834	aio_fsync = REQ_FSYNC
457	aio_fdatasync = REQ_FDATASYNC	835	aio_fdatasync = REQ_FDATASYNC
458	CODE:	836	CODE:
459	{	837	{
460	aio_req req;	838	dREQ;
461
462	Newz (0, req, 1, aio_cb);
463
464	if (!req)
465	croak ("out of memory during aio_req allocation");
466		839
467	req->type = ix;	840	req->type = ix;
		841	req->fh = newSVsv (fh);
468	req->fd = PerlIO_fileno (fh);	842	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
469	req->callback = SvREFCNT_inc (callback);
470		843
471	send_req (req);	844	send_req (req);
472	}	845	}
473		846
474	void	847	void
475	aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	848	aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
476	InputStream fh	849	SV * fh
477	UV offset	850	UV offset
478	IV length	851	UV length
479	SV * data	852	SV * data
480	IV dataoffset	853	UV dataoffset
481	SV * callback	854	SV * callback
		855	ALIAS:
		856	aio_read = REQ_READ
		857	aio_write = REQ_WRITE
482	PROTOTYPE: $$$$$;$	858	PROTOTYPE: $$$$$;$
483	CODE:	859	CODE:
484	read_write (0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);	860	{
		861	aio_req req;
		862	STRLEN svlen;
		863	char *svptr = SvPVbyte (data, svlen);
485		864
		865	SvUPGRADE (data, SVt_PV);
		866	SvPOK_on (data);
		867
		868	if (dataoffset < 0)
		869	dataoffset += svlen;
		870
		871	if (dataoffset < 0 \|\| dataoffset > svlen)
		872	croak ("data offset outside of string");
		873
		874	if (ix == REQ_WRITE)
		875	{
		876	/* write: check length and adjust. */
		877	if (length < 0 \|\| length + dataoffset > svlen)
		878	length = svlen - dataoffset;
		879	}
		880	else
		881	{
		882	/* read: grow scalar as necessary */
		883	svptr = SvGROW (data, length + dataoffset);
		884	}
		885
		886	if (length < 0)
		887	croak ("length must not be negative");
		888
		889	{
		890	dREQ;
		891
		892	req->type = ix;
		893	req->fh = newSVsv (fh);
		894	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
		895	: IoOFP (sv_2io (fh)));
		896	req->offset = offset;
		897	req->length = length;
		898	req->data = SvREFCNT_inc (data);
		899	req->dataptr = (char *)svptr + dataoffset;
		900
		901	if (!SvREADONLY (data))
		902	{
		903	SvREADONLY_on (data);
		904	req->data2ptr = (void *)data;
		905	}
		906
		907	send_req (req);
		908	}
		909	}
		910
486	void	911	void
487	aio_write(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	912	aio_sendfile(out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)
488	OutputStream fh	913	SV * out_fh
		914	SV * in_fh
489	UV offset	915	UV in_offset
490	IV length	916	UV length
491	SV * data
492	IV dataoffset
493	SV * callback	917	SV * callback
494	PROTOTYPE: $$$$$;$	918	PROTOTYPE: $$$$;$
495	CODE:	919	CODE:
496	read_write (1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);	920	{
		921	dREQ;
		922
		923	req->type = REQ_SENDFILE;
		924	req->fh = newSVsv (out_fh);
		925	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
		926	req->fh2 = newSVsv (in_fh);
		927	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
		928	req->offset = in_offset;
		929	req->length = length;
		930
		931	send_req (req);
		932	}
497		933
498	void	934	void
499	aio_readahead(fh,offset,length,callback=&PL_sv_undef)	935	aio_readahead(fh,offset,length,callback=&PL_sv_undef)
500	InputStream fh	936	SV * fh
501	UV offset	937	UV offset
502	IV length	938	IV length
503	SV * callback	939	SV * callback
504	PROTOTYPE: $$$;$	940	PROTOTYPE: $$$;$
505	CODE:	941	CODE:
506	{	942	{
507	aio_req req;	943	dREQ;
508
509	if (length < 0)
510	croak ("length must not be negative");
511
512	Newz (0, req, 1, aio_cb);
513
514	if (!req)
515	croak ("out of memory during aio_req allocation");
516		944
517	req->type = REQ_READAHEAD;	945	req->type = REQ_READAHEAD;
		946	req->fh = newSVsv (fh);
518	req->fd = PerlIO_fileno (fh);	947	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
519	req->offset = offset;	948	req->offset = offset;
520	req->length = length;	949	req->length = length;
521	req->callback = SvREFCNT_inc (callback);
522		950
523	send_req (req);	951	send_req (req);
524	}	952	}
525		953
526	void	954	void
…		…
530	ALIAS:	958	ALIAS:
531	aio_stat = REQ_STAT	959	aio_stat = REQ_STAT
532	aio_lstat = REQ_LSTAT	960	aio_lstat = REQ_LSTAT
533	CODE:	961	CODE:
534	{	962	{
535	aio_req req;	963	dREQ;
536
537	Newz (0, req, 1, aio_cb);
538
539	if (!req)
540	croak ("out of memory during aio_req allocation");
541		964
542	New (0, req->statdata, 1, Stat_t);	965	New (0, req->statdata, 1, Stat_t);
543
544	if (!req->statdata)	966	if (!req->statdata)
		967	{
		968	free_req (req);
545	croak ("out of memory during aio_req->statdata allocation");	969	croak ("out of memory during aio_req->statdata allocation");
		970	}
546		971
547	if (SvPOK (fh_or_path))	972	if (SvPOK (fh_or_path))
548	{	973	{
549	req->type = ix;	974	req->type = ix;
550	req->data = newSVsv (fh_or_path);	975	req->data = newSVsv (fh_or_path);
551	req->dataptr = SvPV_nolen (req->data);	976	req->dataptr = SvPVbyte_nolen (req->data);
552	}	977	}
553	else	978	else
554	{	979	{
555	req->type = REQ_FSTAT;	980	req->type = REQ_FSTAT;
		981	req->fh = newSVsv (fh_or_path);
556	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	982	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
557	}	983	}
558
559	req->callback = SvREFCNT_inc (callback);
560		984
561	send_req (req);	985	send_req (req);
562	}	986	}
563		987
564	void	988	void
565	aio_unlink(pathname,callback=&PL_sv_undef)	989	aio_unlink(pathname,callback=&PL_sv_undef)
566	SV * pathname	990	SV * pathname
567	SV * callback	991	SV * callback
		992	ALIAS:
		993	aio_unlink = REQ_UNLINK
		994	aio_rmdir = REQ_RMDIR
568	CODE:	995	CODE:
569	{	996	{
570	aio_req req;	997	dREQ;
571		998
572	Newz (0, req, 1, aio_cb);	999	req->type = ix;
		1000	req->data = newSVsv (pathname);
		1001	req->dataptr = SvPVbyte_nolen (req->data);
573		1002
574	if (!req)	1003	send_req (req);
575	croak ("out of memory during aio_req allocation");	1004	}
		1005
		1006	void
		1007	aio_symlink(oldpath,newpath,callback=&PL_sv_undef)
		1008	SV * oldpath
		1009	SV * newpath
		1010	SV * callback
		1011	CODE:
		1012	{
		1013	dREQ;
576		1014
577	req->type = REQ_UNLINK;	1015	req->type = REQ_SYMLINK;
		1016	req->fh = newSVsv (oldpath);
		1017	req->data2ptr = SvPVbyte_nolen (req->fh);
		1018	req->data = newSVsv (newpath);
		1019	req->dataptr = SvPVbyte_nolen (req->data);
		1020
		1021	send_req (req);
		1022	}
		1023
		1024	void
		1025	aio_readdir(pathname,callback=&PL_sv_undef)
		1026	SV * pathname
		1027	SV * callback
		1028	CODE:
		1029	{
		1030	dREQ;
		1031
		1032	req->type = REQ_READDIR;
578	req->data = newSVsv (pathname);	1033	req->data = newSVsv (pathname);
579	req->dataptr = SvPV_nolen (req->data);	1034	req->dataptr = SvPVbyte_nolen (req->data);
580	req->callback = SvREFCNT_inc (callback);
581		1035
582	send_req (req);	1036	send_req (req);
583	}	1037	}
584		1038
585	void	1039	void

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Comparing IO-AIO/AIO.xs (file contents): Revision 1.10 by root, Wed Jul 13 00:13:09 2005 UTC vs. Revision 1.39 by root, Mon Feb 6 23:54:12 2006 UTC

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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.10 by root, Wed Jul 13 00:13:09 2005 UTC vs.
Revision 1.39 by root, Mon Feb 6 23:54:12 2006 UTC