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

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.1 by root, Sun Jul 10 17:07:44 2005 UTC vs.
Revision 1.31 by root, Thu Aug 18 16:34:53 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 *next;	41	struct aio_cb *volatile next;
40		42
41	int type;	43	int type;
42		44
43	int fd;	45	int fd;
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, wanted;
59	static int nreqs;	61	static volatile int nreqs;
		62	static int max_outstanding = 1<<30;
60	static int reqpipe[2], respipe[2];	63	static int respipe [2];
61		64
		65	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;
		66	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
		67	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
		68
62	static aio_req qs, qe; /* queue start, queue end */	69	static volatile aio_req reqs, reqe; /* queue start, queue end */
		70	static volatile aio_req ress, rese; /* queue start, queue end */
63		71
64	static void aio_proc(void arg);	72	static void free_req (aio_req req)
65
66	static void
67	start_thread (void)
68	{	73	{
69	sigset_t fullsigset, oldsigset;	74	if (req->data)
70	pthread_t tid;	75	SvREFCNT_dec (req->data);
71	pthread_attr_t attr;
72		76
73	pthread_attr_init (&attr);
74	pthread_attr_setstacksize (&attr, STACKSIZE);
75	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
76
77	sigfillset (&fullsigset);
78	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
79
80	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
81	started++;
82
83	sigprocmask (SIG_SETMASK, &oldsigset, 0);
84	}
85
86	static void
87	send_reqs (void)
88	{
89	/* this write is atomic */
90	while (qs && write (reqpipe[1], &qs, sizeof qs) == sizeof qs)
91	{
92	qs = qs->next;
93	if (!qs) qe = 0;
94	}
95	}
96
97	static void
98	send_req (aio_req req)
99	{
100	nreqs++;
101	req->next = 0;
102
103	if (qe)
104	{
105	qe->next = req;
106	qe = req;
107	}
108	else
109	qe = qs = req;
110
111	send_reqs ();
112	}
113
114	static void
115	end_thread (void)
116	{
117	aio_req req;
118	New (0, req, 1, aio_cb);
119	req->type = REQ_QUIT;
120
121	send_req (req);
122	}
123
124	static void
125	read_write (pTHX_
126	int dowrite, int fd, off_t offset, size_t length,
127	SV data, STRLEN dataoffset, SV callback)
128	{
129	aio_req req;
130	STRLEN svlen;
131	char *svptr = SvPV (data, svlen);
132
133	SvUPGRADE (data, SVt_PV);
134	SvPOK_on (data);
135
136	if (dataoffset < 0)
137	dataoffset += svlen;
138
139	if (dataoffset < 0 \|\| dataoffset > svlen)
140	croak ("data offset outside of string");
141
142	if (dowrite)
143	{
144	/* write: check length and adjust. */
145	if (length < 0 \|\| length + dataoffset > svlen)
146	length = svlen - dataoffset;
147	}
148	else
149	{
150	/* read: grow scalar as necessary */
151	svptr = SvGROW (data, length + dataoffset);
152	}
153
154	if (length < 0)
155	croak ("length must not be negative");
156
157	Newz (0, req, 1, aio_cb);
158
159	if (!req)	77	if (req->fh)
160	croak ("out of memory during aio_req allocation");	78	SvREFCNT_dec (req->fh);
161		79
162	req->type = dowrite ? REQ_WRITE : REQ_READ;	80	if (req->statdata)
163	req->fd = fd;	81	Safefree (req->statdata);
164	req->offset = offset;
165	req->length = length;
166	req->data = SvREFCNT_inc (data);
167	req->dataptr = (char *)svptr + dataoffset;
168	req->callback = SvREFCNT_inc (callback);
169		82
170	send_req (req);	83	if (req->callback)
		84	SvREFCNT_dec (req->callback);
		85
		86	Safefree (req);
171	}	87	}
172		88
173	static void	89	static void
174	poll_wait ()	90	poll_wait ()
175	{	91	{
		92	if (nreqs && !ress)
		93	{
176	fd_set rfd;	94	fd_set rfd;
177	FD_ZERO(&rfd);	95	FD_ZERO(&rfd);
178	FD_SET(respipe[0], &rfd);	96	FD_SET(respipe [0], &rfd);
179		97
180	select (respipe[0] + 1, &rfd, 0, 0, 0);	98	select (respipe [0] + 1, &rfd, 0, 0, 0);
		99	}
181	}	100	}
182		101
183	static int	102	static int
184	poll_cb (pTHX)	103	poll_cb ()
185	{	104	{
186	dSP;	105	dSP;
187	int count = 0;	106	int count = 0;
		107	int do_croak = 0;
188	aio_req req;	108	aio_req req;
189		109
190	while (read (respipe[0], (void *)&req, sizeof (req)) == sizeof (req))	110	for (;;)
191	{	111	{
		112	pthread_mutex_lock (&reslock);
		113	req = ress;
		114
		115	if (req)
		116	{
		117	ress = req->next;
		118
		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	}
		128	}
		129
		130	pthread_mutex_unlock (&reslock);
		131
		132	if (!req)
		133	break;
		134
192	nreqs--;	135	nreqs--;
193		136
194	if (req->type == REQ_QUIT)	137	if (req->type == REQ_QUIT)
195	started--;	138	started--;
196	else	139	else
197	{	140	{
198	int errorno = errno;	141	int errorno = errno;
199	errno = req->errorno;	142	errno = req->errorno;
200		143
201	if (req->type == REQ_READ)	144	if (req->type == REQ_READ)
202	SvCUR_set (req->data, req->dataoffset	145	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
203	+ req->result > 0 ? req->result : 0);
204		146
		147	if (req->data2ptr && (req->type == REQ_READ \|\| req->type == REQ_WRITE))
		148	SvREADONLY_off (req->data);
		149
205	if (req->data)	150	if (req->statdata)
206	SvREFCNT_dec (req->data);
207
208	if (req->type == REQ_STAT \|\| req->type == REQ_LSTAT \|\| req->type == REQ_FSTAT)
209	{	151	{
210	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	152	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
211	PL_laststatval = req->result;	153	PL_laststatval = req->result;
212	PL_statcache = *(req->statdata);	154	PL_statcache = *(req->statdata);
213
214	Safefree (req->statdata);
215	}	155	}
216		156
		157	ENTER;
217	PUSHMARK (SP);	158	PUSHMARK (SP);
218	XPUSHs (sv_2mortal (newSViv (req->result)));	159	XPUSHs (sv_2mortal (newSViv (req->result)));
		160
		161	if (req->type == REQ_OPEN)
		162	{
		163	/* convert fd to fh */
		164	SV *fh;
		165
219	PUTBACK;	166	PUTBACK;
220	call_sv (req->callback, G_VOID);	167	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);
221	SPAGAIN;	168	SPAGAIN;
		169
		170	fh = SvREFCNT_inc (POPs);
		171
		172	PUSHMARK (SP);
		173	XPUSHs (sv_2mortal (fh));
222		174	}
		175
223	if (req->callback)	176	if (SvOK (req->callback))
224	SvREFCNT_dec (req->callback);	177	{
		178	PUTBACK;
		179	call_sv (req->callback, G_VOID \| G_EVAL);
		180	SPAGAIN;
		181
		182	if (SvTRUE (ERRSV))
		183	{
		184	free_req (req);
		185	croak (0);
		186	}
		187	}
		188
		189	LEAVE;
225		190
226	errno = errorno;	191	errno = errorno;
227	count++;	192	count++;
228	}	193	}
229		194
230	Safefree (req);	195	free_req (req);
231	}	196	}
232
233	if (qs)
234	send_reqs ();
235		197
236	return count;	198	return count;
237	}	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	while (started < wanted && nreqs >= started)
		227	start_thread ();
		228
		229	nreqs++;
		230
		231	pthread_mutex_lock (&reqlock);
		232
		233	req->next = 0;
		234
		235	if (reqe)
		236	{
		237	reqe->next = req;
		238	reqe = req;
		239	}
		240	else
		241	reqe = reqs = req;
		242
		243	pthread_cond_signal (&reqwait);
		244	pthread_mutex_unlock (&reqlock);
		245
		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)
		288	{
		289	poll_wait ();
		290	poll_cb ();
		291	}
		292	}
		293
		294	static void create_pipe ()
		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	{
		320	aio_req prv;
		321
		322	started = 0;
		323
		324	while (reqs)
		325	{
		326	prv = reqs;
		327	reqs = prv->next;
		328	free_req (prv);
		329	}
		330
		331	reqs = reqe = 0;
		332
		333	while (ress)
		334	{
		335	prv = ress;
		336	ress = prv->next;
		337	free_req (prv);
		338	}
		339
		340	ress = rese = 0;
		341
		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);
		413	offset += len;
		414	count -= len;
		415	}
		416
		417	errno = 0;
		418	}
		419	#endif
		420
		421	/*****************************************************************************/
238		422
239	static void *	423	static void *
240	aio_proc (void *thr_arg)	424	aio_proc (void *thr_arg)
241	{	425	{
242	aio_req req;	426	aio_req req;
		427	int type;
243		428
244	/* then loop */	429	do
245	while (read (reqpipe[0], (void *)&req, sizeof (req)) == sizeof (req))	430	{
		431	pthread_mutex_lock (&reqlock);
		432
		433	for (;;)
		434	{
		435	req = reqs;
		436
		437	if (reqs)
		438	{
		439	reqs = reqs->next;
		440	if (!reqs) reqe = 0;
		441	}
		442
		443	if (req)
		444	break;
		445
		446	pthread_cond_wait (&reqwait, &reqlock);
		447	}
		448
		449	pthread_mutex_unlock (&reqlock);
246	{	450
247	errno = 0; /* strictly unnecessary */	451	errno = 0; /* strictly unnecessary */
248		452
		453	type = req->type;
		454
249	switch (req->type)	455	switch (type)
250	{	456	{
251	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;
252	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;
253	#if SYS_readahead	459
254	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;
255	#else
256	case REQ_READAHEAD: req->result = -1; errno = ENOSYS; break;
257	#endif
258		461
259	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	462	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
260	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	463	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
261	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	464	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
262		465
263	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;
264	case REQ_CLOSE: req->result = close (req->fd); break;	467	case REQ_CLOSE: req->result = close (req->fd); break;
265	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;
266		471
		472	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
267	case REQ_FSYNC: req->result = fsync (req->fd); break;	473	case REQ_FSYNC: req->result = fsync (req->fd); break;
268	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
269		474
270	case REQ_QUIT:	475	case REQ_QUIT:
271	write (respipe[1], (void *)&req, sizeof (req));	476	break;
272	return 0;
273		477
274	default:	478	default:
275	req->result = ENOSYS;	479	req->result = ENOSYS;
276	break;	480	break;
277	}	481	}
278		482
279	req->errorno = errno;	483	req->errorno = errno;
280	write (respipe[1], (void *)&req, sizeof (req));	484
		485	pthread_mutex_lock (&reslock);
		486
		487	req->next = 0;
		488
		489	if (rese)
		490	{
		491	rese->next = req;
		492	rese = req;
		493	}
		494	else
		495	{
		496	rese = ress = req;
		497
		498	/* write a dummy byte to the pipe so fh becomes ready */
		499	write (respipe [1], &respipe, 1);
		500	}
		501
		502	pthread_mutex_unlock (&reslock);
281	}	503	}
		504	while (type != REQ_QUIT);
282		505
283	return 0;	506	return 0;
284	}	507	}
285		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
286	MODULE = IO::AIO PACKAGE = IO::AIO	521	MODULE = IO::AIO PACKAGE = IO::AIO
287		522
		523	PROTOTYPES: ENABLE
		524
288	BOOT:	525	BOOT:
289	{	526	{
290	if (pipe (reqpipe) \|\| pipe (respipe))	527	create_pipe ();
291	croak ("unable to initialize request or result pipe");	528	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
292
293	if (fcntl (reqpipe[1], F_SETFL, O_NONBLOCK))
294	croak ("cannot set result pipe to nonblocking mode");
295
296	if (fcntl (respipe[0], F_SETFL, O_NONBLOCK))
297	croak ("cannot set result pipe to nonblocking mode");
298	}	529	}
299		530
300	void	531	void
301	min_parallel(nthreads)	532	min_parallel(nthreads)
302	int nthreads	533	int nthreads
303	PROTOTYPE: $	534	PROTOTYPE: $
304	CODE:
305	while (nthreads > started)
306	start_thread ();
307		535
308	void	536	void
309	max_parallel(nthreads)	537	max_parallel(nthreads)
310	int nthreads	538	int nthreads
311	PROTOTYPE: $	539	PROTOTYPE: $
		540
		541	int
		542	max_outstanding(nreqs)
		543	int nreqs
		544	PROTOTYPE: $
312	CODE:	545	CODE:
313	{	546	RETVAL = max_outstanding;
314	int cur = started;	547	max_outstanding = nreqs;
315	while (cur > nthreads)
316	{
317	end_thread ();
318	cur--;
319	}
320		548
321	while (started > nthreads)
322	{
323	poll_wait ();
324	poll_cb (aTHX);
325	}
326	}
327
328	void	549	void
329	aio_open(pathname,flags,mode,callback)	550	aio_open(pathname,flags,mode,callback=&PL_sv_undef)
330	SV * pathname	551	SV * pathname
331	int flags	552	int flags
332	int mode	553	int mode
333	SV * callback	554	SV * callback
334	PROTOTYPE: $$$$	555	PROTOTYPE: $$$;$
335	CODE:	556	CODE:
336	{	557	{
337	aio_req req;	558	dREQ;
338
339	Newz (0, req, 1, aio_cb);
340
341	if (!req)
342	croak ("out of memory during aio_req allocation");
343		559
344	req->type = REQ_OPEN;	560	req->type = REQ_OPEN;
345	req->data = newSVsv (pathname);	561	req->data = newSVsv (pathname);
346	req->dataptr = SvPV_nolen (req->data);	562	req->dataptr = SvPVbyte_nolen (req->data);
347	req->fd = flags;	563	req->fd = flags;
348	req->mode = mode;	564	req->mode = mode;
349	req->callback = SvREFCNT_inc (callback);
350		565
351	send_req (req);	566	send_req (req);
352	}	567	}
353		568
354	void	569	void
355	aio_close(fh,callback)	570	aio_close(fh,callback=&PL_sv_undef)
356	InputStream fh	571	SV * fh
357	SV * callback	572	SV * callback
358	PROTOTYPE: $$	573	PROTOTYPE: $;$
359	ALIAS:	574	ALIAS:
360	aio_close = REQ_CLOSE	575	aio_close = REQ_CLOSE
361	aio_fsync = REQ_FSYNC	576	aio_fsync = REQ_FSYNC
362	aio_fdatasync = REQ_FDATASYNC	577	aio_fdatasync = REQ_FDATASYNC
363	CODE:	578	CODE:
364	{	579	{
		580	dREQ;
		581
		582	req->type = ix;
		583	req->fh = newSVsv (fh);
		584	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
		585
		586	send_req (req);
		587	}
		588
		589	void
		590	aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
		591	SV * fh
		592	UV offset
		593	IV length
		594	SV * data
		595	IV dataoffset
		596	SV * callback
		597	ALIAS:
		598	aio_read = REQ_READ
		599	aio_write = REQ_WRITE
		600	PROTOTYPE: $$$$$;$
		601	CODE:
		602	{
365	aio_req req;	603	aio_req req;
		604	STRLEN svlen;
		605	char *svptr = SvPVbyte (data, svlen);
366		606
367	Newz (0, req, 1, aio_cb);	607	SvUPGRADE (data, SVt_PV);
		608	SvPOK_on (data);
368		609
369	if (!req)	610	if (dataoffset < 0)
370	croak ("out of memory during aio_req allocation");	611	dataoffset += svlen;
371		612
372	req->type = ix;	613	if (dataoffset < 0 \|\| dataoffset > svlen)
373	req->fd = PerlIO_fileno (fh);	614	croak ("data offset outside of string");
374	req->callback = SvREFCNT_inc (callback);
375		615
376	send_req (req);	616	if (ix == REQ_WRITE)
377	}	617	{
378		618	/* write: check length and adjust. */
379	void	619	if (length < 0 \|\| length + dataoffset > svlen)
380	aio_read(fh,offset,length,data,dataoffset,callback)	620	length = svlen - dataoffset;
381	InputStream fh	621	}
382	UV offset	622	else
383	IV length	623	{
384	SV * data	624	/* read: grow scalar as necessary */
385	IV dataoffset	625	svptr = SvGROW (data, length + dataoffset);
386	SV * callback	626	}
387	PROTOTYPE: $$$$$$
388	CODE:
389	read_write (aTHX_ 0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
390
391	void
392	aio_write(fh,offset,length,data,dataoffset,callback)
393	OutputStream fh
394	UV offset
395	IV length
396	SV * data
397	IV dataoffset
398	SV * callback
399	PROTOTYPE: $$$$$$
400	CODE:
401	read_write (aTHX_ 1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
402
403	void
404	aio_readahead(fh,offset,length,callback)
405	InputStream fh
406	UV offset
407	IV length
408	SV * callback
409	PROTOTYPE: $$$$
410	CODE:
411	{
412	aio_req req;
413		627
414	if (length < 0)	628	if (length < 0)
415	croak ("length must not be negative");	629	croak ("length must not be negative");
416		630
417	Newz (0, req, 1, aio_cb);	631	{
		632	dREQ;
418		633
419	if (!req)	634	req->type = ix;
420	croak ("out of memory during aio_req allocation");	635	req->fh = newSVsv (fh);
		636	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
		637	: IoOFP (sv_2io (fh)));
		638	req->offset = offset;
		639	req->length = length;
		640	req->data = SvREFCNT_inc (data);
		641	req->dataptr = (char *)svptr + dataoffset;
		642
		643	if (!SvREADONLY (data))
		644	{
		645	SvREADONLY_on (data);
		646	req->data2ptr = (void *)data;
		647	}
		648
		649	send_req (req);
		650	}
		651	}
		652
		653	void
		654	aio_readahead(fh,offset,length,callback=&PL_sv_undef)
		655	SV * fh
		656	UV offset
		657	IV length
		658	SV * callback
		659	PROTOTYPE: $$$;$
		660	CODE:
		661	{
		662	dREQ;
421		663
422	req->type = REQ_READAHEAD;	664	req->type = REQ_READAHEAD;
		665	req->fh = newSVsv (fh);
423	req->fd = PerlIO_fileno (fh);	666	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
424	req->offset = offset;	667	req->offset = offset;
425	req->length = length;	668	req->length = length;
426	req->callback = SvREFCNT_inc (callback);
427		669
428	send_req (req);	670	send_req (req);
429	}	671	}
430		672
431	void	673	void
432	aio_stat(fh_or_path,callback)	674	aio_stat(fh_or_path,callback=&PL_sv_undef)
433	SV * fh_or_path	675	SV * fh_or_path
434	SV * callback	676	SV * callback
435	PROTOTYPE: $$
436	ALIAS:	677	ALIAS:
		678	aio_stat = REQ_STAT
437	aio_lstat = 1	679	aio_lstat = REQ_LSTAT
438	CODE:	680	CODE:
439	{	681	{
440	aio_req req;	682	dREQ;
441
442	Newz (0, req, 1, aio_cb);
443
444	if (!req)
445	croak ("out of memory during aio_req allocation");
446		683
447	New (0, req->statdata, 1, Stat_t);	684	New (0, req->statdata, 1, Stat_t);
448
449	if (!req->statdata)	685	if (!req->statdata)
		686	{
		687	free_req (req);
450	croak ("out of memory during aio_req->statdata allocation");	688	croak ("out of memory during aio_req->statdata allocation");
		689	}
451		690
452	if (SvPOK (fh_or_path))	691	if (SvPOK (fh_or_path))
453	{	692	{
454	req->type = ix ? REQ_LSTAT : REQ_STAT;	693	req->type = ix;
455	req->data = newSVsv (fh_or_path);	694	req->data = newSVsv (fh_or_path);
456	req->dataptr = SvPV_nolen (req->data);	695	req->dataptr = SvPVbyte_nolen (req->data);
457	}	696	}
458	else	697	else
459	{	698	{
460	req->type = REQ_FSTAT;	699	req->type = REQ_FSTAT;
		700	req->fh = newSVsv (fh_or_path);
461	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	701	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
462	}	702	}
463		703
464	req->callback = SvREFCNT_inc (callback);
465
466	send_req (req);	704	send_req (req);
467	}	705	}
468		706
469	void	707	void
470	aio_unlink(pathname,callback)	708	aio_unlink(pathname,callback=&PL_sv_undef)
471	SV * pathname	709	SV * pathname
472	SV * callback	710	SV * callback
473	PROTOTYPE: $$	711	ALIAS:
		712	aio_unlink = REQ_UNLINK
		713	aio_rmdir = REQ_RMDIR
474	CODE:	714	CODE:
475	{	715	{
476	aio_req req;	716	dREQ;
477		717
478	Newz (0, req, 1, aio_cb);	718	req->type = ix;
479
480	if (!req)
481	croak ("out of memory during aio_req allocation");
482
483	req->type = REQ_UNLINK;
484	req->data = newSVsv (pathname);	719	req->data = newSVsv (pathname);
485	req->dataptr = SvPV_nolen (req->data);	720	req->dataptr = SvPVbyte_nolen (req->data);
486	req->callback = SvREFCNT_inc (callback);
487		721
488	send_req (req);	722	send_req (req);
489	}	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	}
490		762
491	int	763	int
492	poll_fileno()	764	poll_fileno()
493	PROTOTYPE:	765	PROTOTYPE:
494	CODE:	766	CODE:
495	RETVAL = respipe[0];	767	RETVAL = respipe [0];
496	OUTPUT:	768	OUTPUT:
497	RETVAL	769	RETVAL
498		770
499	int	771	int
500	poll_cb(...)	772	poll_cb(...)
501	PROTOTYPE:	773	PROTOTYPE:
502	CODE:	774	CODE:
503	RETVAL = poll_cb (aTHX);	775	RETVAL = poll_cb ();
504	OUTPUT:	776	OUTPUT:
505	RETVAL	777	RETVAL
506		778
507	void	779	void
508	poll_wait()	780	poll_wait()
509	PROTOTYPE:	781	PROTOTYPE:
510	CODE:	782	CODE:
		783	if (nreqs)
511	poll_wait ();	784	poll_wait ();
512		785
513	int	786	int
514	nreqs()	787	nreqs()
515	PROTOTYPE:	788	PROTOTYPE:
516	CODE:	789	CODE:

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Comparing IO-AIO/AIO.xs (file contents): Revision 1.1 by root, Sun Jul 10 17:07:44 2005 UTC vs. Revision 1.31 by root, Thu Aug 18 16:34:53 2005 UTC

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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.1 by root, Sun Jul 10 17:07:44 2005 UTC vs.
Revision 1.31 by root, Thu Aug 18 16:34:53 2005 UTC