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

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.2 by root, Sun Jul 10 18:16:49 2005 UTC vs.
Revision 1.22 by root, Tue Aug 16 22:22:18 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, REQ_SYMLINK,
		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;
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_mutex_t frklock = PTHREAD_MUTEX_INITIALIZER;
		68	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
		69
62	static aio_req qs, qe; /* queue start, queue end */	70	static volatile aio_req reqs, reqe; /* queue start, queue end */
63		71	static volatile aio_req ress, rese; /* queue start, queue end */
64	static void aio_proc(void arg);
65
66	static void
67	start_thread (void)
68	{
69	sigset_t fullsigset, oldsigset;
70	pthread_t tid;
71	pthread_attr_t attr;
72
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)
160	croak ("out of memory during aio_req allocation");
161
162	req->type = dowrite ? REQ_WRITE : REQ_READ;
163	req->fd = fd;
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
170	send_req (req);
171	}
172		72
173	static void	73	static void
174	poll_wait ()	74	poll_wait ()
175	{	75	{
		76	if (nreqs && !ress)
		77	{
176	fd_set rfd;	78	fd_set rfd;
177	FD_ZERO(&rfd);	79	FD_ZERO(&rfd);
178	FD_SET(respipe[0], &rfd);	80	FD_SET(respipe [0], &rfd);
179		81
180	select (respipe[0] + 1, &rfd, 0, 0, 0);	82	select (respipe [0] + 1, &rfd, 0, 0, 0);
		83	}
181	}	84	}
182		85
183	static int	86	static int
184	poll_cb (pTHX)	87	poll_cb ()
185	{	88	{
186	dSP;	89	dSP;
187	int count = 0;	90	int count = 0;
188	aio_req req;	91	aio_req req, prv;
189		92
190	while (read (respipe[0], (void *)&req, sizeof (req)) == sizeof (req))	93	pthread_mutex_lock (&reslock);
		94
		95	{
		96	/* read any signals sent by the worker threads */
		97	char buf [32];
		98	while (read (respipe [0], buf, 32) == 32)
		99	;
		100	}
		101
		102	req = ress;
		103	ress = rese = 0;
		104
		105	pthread_mutex_unlock (&reslock);
		106
		107	while (req)
191	{	108	{
192	nreqs--;	109	nreqs--;
193		110
194	if (req->type == REQ_QUIT)	111	if (req->type == REQ_QUIT)
195	started--;	112	started--;
203	+ req->result > 0 ? req->result : 0);	120	+ req->result > 0 ? req->result : 0);
204		121
205	if (req->data)	122	if (req->data)
206	SvREFCNT_dec (req->data);	123	SvREFCNT_dec (req->data);
207		124
		125	if (req->fh)
		126	SvREFCNT_dec (req->fh);
		127
208	if (req->type == REQ_STAT \|\| req->type == REQ_LSTAT \|\| req->type == REQ_FSTAT)	128	if (req->type == REQ_STAT \|\| req->type == REQ_LSTAT \|\| req->type == REQ_FSTAT)
209	{	129	{
210	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	130	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
211	PL_laststatval = req->result;	131	PL_laststatval = req->result;
212	PL_statcache = *(req->statdata);	132	PL_statcache = *(req->statdata);
213		133
214	Safefree (req->statdata);	134	Safefree (req->statdata);
215	}	135	}
216		136
		137	ENTER;
217	PUSHMARK (SP);	138	PUSHMARK (SP);
218	XPUSHs (sv_2mortal (newSViv (req->result)));	139	XPUSHs (sv_2mortal (newSViv (req->result)));
219		140
220	if (req->type == REQ_OPEN)	141	if (req->type == REQ_OPEN)
221	{	142	{
…		…
224		145
225	PUTBACK;	146	PUTBACK;
226	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);	147	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);
227	SPAGAIN;	148	SPAGAIN;
228		149
229	fh = POPs;	150	fh = SvREFCNT_inc (POPs);
230		151
231	PUSHMARK (SP);	152	PUSHMARK (SP);
232	XPUSHs (fh);	153	XPUSHs (sv_2mortal (fh));
233	}	154	}
234		155
		156	if (SvOK (req->callback))
		157	{
235	PUTBACK;	158	PUTBACK;
236	call_sv (req->callback, G_VOID \| G_EVAL);	159	call_sv (req->callback, G_VOID \| G_EVAL);
237	SPAGAIN;	160	SPAGAIN;
		161	}
		162
		163	LEAVE;
238		164
239	if (req->callback)	165	if (req->callback)
240	SvREFCNT_dec (req->callback);	166	SvREFCNT_dec (req->callback);
241		167
242	errno = errorno;	168	errno = errorno;
243	count++;	169	count++;
244	}	170	}
245		171
		172	prv = req;
		173	req = req->next;
246	Safefree (req);	174	Safefree (prv);
		175
		176	/* TODO: croak on errors? */
247	}	177	}
248		178
249	if (qs)
250	send_reqs ();
251
252	return count;	179	return count;
253	}	180	}
		181
		182	static void aio_proc(void arg);
		183
		184	static void
		185	start_thread (void)
		186	{
		187	sigset_t fullsigset, oldsigset;
		188	pthread_t tid;
		189	pthread_attr_t attr;
		190
		191	pthread_attr_init (&attr);
		192	pthread_attr_setstacksize (&attr, STACKSIZE);
		193	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
		194
		195	sigfillset (&fullsigset);
		196	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
		197
		198	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
		199	started++;
		200
		201	sigprocmask (SIG_SETMASK, &oldsigset, 0);
		202	}
		203
		204	static void
		205	send_req (aio_req req)
		206	{
		207	nreqs++;
		208
		209	pthread_mutex_lock (&reqlock);
		210
		211	req->next = 0;
		212
		213	if (reqe)
		214	{
		215	reqe->next = req;
		216	reqe = req;
		217	}
		218	else
		219	reqe = reqs = req;
		220
		221	pthread_cond_signal (&reqwait);
		222	pthread_mutex_unlock (&reqlock);
		223
		224	while (nreqs > max_outstanding)
		225	{
		226	poll_wait ();
		227	poll_cb ();
		228	}
		229	}
		230
		231	static void
		232	end_thread (void)
		233	{
		234	aio_req req;
		235	New (0, req, 1, aio_cb);
		236	req->type = REQ_QUIT;
		237
		238	send_req (req);
		239	}
		240
		241
		242	static void min_parallel (int nthreads)
		243	{
		244	while (nthreads > started)
		245	start_thread ();
		246	}
		247
		248	static void max_parallel (int nthreads)
		249	{
		250	int cur = started;
		251	while (cur > nthreads)
		252	{
		253	end_thread ();
		254	cur--;
		255	}
		256
		257	while (started > nthreads)
		258	{
		259	poll_wait ();
		260	poll_cb ();
		261	}
		262	}
		263
		264	static int fork_started;
		265
		266	static void atfork_prepare (void)
		267	{
		268	pthread_mutex_lock (&frklock);
		269
		270	fork_started = started;
		271
		272	for (;;) {
		273	while (nreqs)
		274	{
		275	poll_wait ();
		276	poll_cb ();
		277	}
		278
		279	max_parallel (0);
		280
		281	pthread_mutex_lock (&reqlock);
		282
		283	if (!nreqs && !started)
		284	break;
		285
		286	pthread_mutex_unlock (&reqlock);
		287
		288	min_parallel (fork_started);
		289	}
		290
		291	pthread_mutex_lock (&reslock);
		292
		293	assert (!started);
		294	assert (!nreqs);
		295	assert (!reqs && !reqe);
		296	assert (!ress && !rese);
		297	}
		298
		299	static void atfork_parent (void)
		300	{
		301	pthread_mutex_unlock (&reslock);
		302	min_parallel (fork_started);
		303	pthread_mutex_unlock (&reqlock);
		304	pthread_mutex_unlock (&frklock);
		305	}
		306
		307	static void atfork_child (void)
		308	{
		309	reqs = reqe = 0;
		310
		311	atfork_parent ();
		312	}
		313
		314	/*****************************************************************************/
		315	/* work around various missing functions */
		316
		317	#if !HAVE_PREADWRITE
		318	# define pread aio_pread
		319	# define pwrite aio_pwrite
		320
		321	/*
		322	* make our pread/pwrite safe against themselves, but not against
		323	* normal read/write by using a mutex. slows down execution a lot,
		324	* but that's your problem, not mine.
		325	*/
		326	static pthread_mutex_t iolock = PTHREAD_MUTEX_INITIALIZER;
		327
		328	static ssize_t
		329	pread (int fd, void *buf, size_t count, off_t offset)
		330	{
		331	ssize_t res;
		332	off_t ooffset;
		333
		334	pthread_mutex_lock (&iolock);
		335	ooffset = lseek (fd, 0, SEEK_CUR);
		336	lseek (fd, offset, SEEK_SET);
		337	res = read (fd, buf, count);
		338	lseek (fd, ooffset, SEEK_SET);
		339	pthread_mutex_unlock (&iolock);
		340
		341	return res;
		342	}
		343
		344	static ssize_t
		345	pwrite (int fd, void *buf, size_t count, off_t offset)
		346	{
		347	ssize_t res;
		348	off_t ooffset;
		349
		350	pthread_mutex_lock (&iolock);
		351	ooffset = lseek (fd, 0, SEEK_CUR);
		352	lseek (fd, offset, SEEK_SET);
		353	res = write (fd, buf, count);
		354	lseek (fd, offset, SEEK_SET);
		355	pthread_mutex_unlock (&iolock);
		356
		357	return res;
		358	}
		359	#endif
		360
		361	#if !HAVE_FDATASYNC
		362	# define fdatasync fsync
		363	#endif
		364
		365	#if !HAVE_READAHEAD
		366	# define readahead aio_readahead
		367
		368	static char readahead_buf[4096];
		369
		370	static ssize_t
		371	readahead (int fd, off_t offset, size_t count)
		372	{
		373	while (count > 0)
		374	{
		375	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
		376
		377	pread (fd, readahead_buf, len, offset);
		378	offset += len;
		379	count -= len;
		380	}
		381
		382	errno = 0;
		383	}
		384	#endif
		385
		386	/*****************************************************************************/
254		387
255	static void *	388	static void *
256	aio_proc (void *thr_arg)	389	aio_proc (void *thr_arg)
257	{	390	{
258	aio_req req;	391	aio_req req;
		392	int type;
259		393
260	/* then loop */	394	do
261	while (read (reqpipe[0], (void *)&req, sizeof (req)) == sizeof (req))
262	{	395	{
		396	pthread_mutex_lock (&reqlock);
		397
		398	for (;;)
		399	{
		400	req = reqs;
		401
		402	if (reqs)
		403	{
		404	reqs = reqs->next;
		405	if (!reqs) reqe = 0;
		406	}
		407
		408	if (req)
		409	break;
		410
		411	pthread_cond_wait (&reqwait, &reqlock);
		412	}
		413
		414	pthread_mutex_unlock (&reqlock);
		415
263	errno = 0; /* strictly unnecessary */	416	errno = 0; /* strictly unnecessary */
264		417
		418	type = req->type;
		419
265	switch (req->type)	420	switch (type)
266	{	421	{
267	case REQ_READ: req->result = pread64 (req->fd, req->dataptr, req->length, req->offset); break;	422	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
268	case REQ_WRITE: req->result = pwrite64 (req->fd, req->dataptr, req->length, req->offset); break;	423	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
269	#if SYS_readahead	424
270	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	425	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
271	#else
272	case REQ_READAHEAD: req->result = -1; errno = ENOSYS; break;
273	#endif
274		426
275	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	427	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
276	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	428	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
277	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	429	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
278		430
279	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;	431	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
280	case REQ_CLOSE: req->result = close (req->fd); break;	432	case REQ_CLOSE: req->result = close (req->fd); break;
281	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	433	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
		434	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
		435	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
282		436
		437	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
283	case REQ_FSYNC: req->result = fsync (req->fd); break;	438	case REQ_FSYNC: req->result = fsync (req->fd); break;
284	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
285		439
286	case REQ_QUIT:	440	case REQ_QUIT:
287	write (respipe[1], (void *)&req, sizeof (req));	441	break;
288	return 0;
289		442
290	default:	443	default:
291	req->result = ENOSYS;	444	req->result = ENOSYS;
292	break;	445	break;
293	}	446	}
294		447
295	req->errorno = errno;	448	req->errorno = errno;
296	write (respipe[1], (void *)&req, sizeof (req));	449
		450	pthread_mutex_lock (&reslock);
		451
		452	req->next = 0;
		453
		454	if (rese)
		455	{
		456	rese->next = req;
		457	rese = req;
		458	}
		459	else
		460	{
		461	rese = ress = req;
		462
		463	/* write a dummy byte to the pipe so fh becomes ready */
		464	write (respipe [1], &respipe, 1);
		465	}
		466
		467	pthread_mutex_unlock (&reslock);
297	}	468	}
		469	while (type != REQ_QUIT);
298		470
299	return 0;	471	return 0;
300	}	472	}
301		473
		474	#define dREQ \
		475	aio_req req; \
		476	\
		477	if (SvOK (callback) && !SvROK (callback)) \
		478	croak ("clalback must be undef or of reference type"); \
		479	\
		480	Newz (0, req, 1, aio_cb); \
		481	if (!req) \
		482	croak ("out of memory during aio_req allocation"); \
		483	\
		484	req->callback = SvREFCNT_inc (callback);
		485
302	MODULE = IO::AIO PACKAGE = IO::AIO	486	MODULE = IO::AIO PACKAGE = IO::AIO
303		487
		488	PROTOTYPES: ENABLE
		489
304	BOOT:	490	BOOT:
305	{	491	{
306	if (pipe (reqpipe) \|\| pipe (respipe))	492	if (pipe (respipe))
307	croak ("unable to initialize request or result pipe");	493	croak ("unable to initialize result pipe");
308		494
309	if (fcntl (reqpipe[1], F_SETFL, O_NONBLOCK))	495	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
310	croak ("cannot set result pipe to nonblocking mode");	496	croak ("cannot set result pipe to nonblocking mode");
311		497
312	if (fcntl (respipe[0], F_SETFL, O_NONBLOCK))	498	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
313	croak ("cannot set result pipe to nonblocking mode");	499	croak ("cannot set result pipe to nonblocking mode");
		500
		501	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
314	}	502	}
315		503
316	void	504	void
317	min_parallel(nthreads)	505	min_parallel(nthreads)
318	int nthreads	506	int nthreads
319	PROTOTYPE: $	507	PROTOTYPE: $
320	CODE:
321	while (nthreads > started)
322	start_thread ();
323		508
324	void	509	void
325	max_parallel(nthreads)	510	max_parallel(nthreads)
326	int nthreads	511	int nthreads
327	PROTOTYPE: $	512	PROTOTYPE: $
		513
		514	int
		515	max_outstanding(nreqs)
		516	int nreqs
		517	PROTOTYPE: $
328	CODE:	518	CODE:
329	{	519	RETVAL = max_outstanding;
330	int cur = started;	520	max_outstanding = nreqs;
331	while (cur > nthreads)
332	{
333	end_thread ();
334	cur--;
335	}
336		521
337	while (started > nthreads)
338	{
339	poll_wait ();
340	poll_cb (aTHX);
341	}
342	}
343
344	void	522	void
345	aio_open(pathname,flags,mode,callback)	523	aio_open(pathname,flags,mode,callback=&PL_sv_undef)
346	SV * pathname	524	SV * pathname
347	int flags	525	int flags
348	int mode	526	int mode
349	SV * callback	527	SV * callback
350	PROTOTYPE: $$$$	528	PROTOTYPE: $$$;$
351	CODE:	529	CODE:
352	{	530	{
353	aio_req req;	531	dREQ;
354
355	Newz (0, req, 1, aio_cb);
356
357	if (!req)
358	croak ("out of memory during aio_req allocation");
359		532
360	req->type = REQ_OPEN;	533	req->type = REQ_OPEN;
361	req->data = newSVsv (pathname);	534	req->data = newSVsv (pathname);
362	req->dataptr = SvPV_nolen (req->data);	535	req->dataptr = SvPVbyte_nolen (req->data);
363	req->fd = flags;	536	req->fd = flags;
364	req->mode = mode;	537	req->mode = mode;
365	req->callback = SvREFCNT_inc (callback);
366		538
367	send_req (req);	539	send_req (req);
368	}	540	}
369		541
370	void	542	void
371	aio_close(fh,callback)	543	aio_close(fh,callback=&PL_sv_undef)
372	InputStream fh	544	SV * fh
373	SV * callback	545	SV * callback
374	PROTOTYPE: $$	546	PROTOTYPE: $;$
375	ALIAS:	547	ALIAS:
376	aio_close = REQ_CLOSE	548	aio_close = REQ_CLOSE
377	aio_fsync = REQ_FSYNC	549	aio_fsync = REQ_FSYNC
378	aio_fdatasync = REQ_FDATASYNC	550	aio_fdatasync = REQ_FDATASYNC
379	CODE:	551	CODE:
380	{	552	{
		553	dREQ;
		554
		555	req->type = ix;
		556	req->fh = newSVsv (fh);
		557	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
		558
		559	send_req (req);
		560	}
		561
		562	void
		563	aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
		564	SV * fh
		565	UV offset
		566	IV length
		567	SV * data
		568	IV dataoffset
		569	SV * callback
		570	ALIAS:
		571	aio_read = REQ_READ
		572	aio_write = REQ_WRITE
		573	PROTOTYPE: $$$$$;$
		574	CODE:
		575	{
381	aio_req req;	576	aio_req req;
		577	STRLEN svlen;
		578	char *svptr = SvPVbyte (data, svlen);
382		579
383	Newz (0, req, 1, aio_cb);	580	SvUPGRADE (data, SVt_PV);
		581	SvPOK_on (data);
384		582
385	if (!req)	583	if (dataoffset < 0)
386	croak ("out of memory during aio_req allocation");	584	dataoffset += svlen;
387		585
388	req->type = ix;	586	if (dataoffset < 0 \|\| dataoffset > svlen)
389	req->fd = PerlIO_fileno (fh);	587	croak ("data offset outside of string");
390	req->callback = SvREFCNT_inc (callback);
391		588
392	send_req (req);	589	if (ix == REQ_WRITE)
393	}	590	{
394		591	/* write: check length and adjust. */
395	void	592	if (length < 0 \|\| length + dataoffset > svlen)
396	aio_read(fh,offset,length,data,dataoffset,callback)	593	length = svlen - dataoffset;
397	InputStream fh	594	}
398	UV offset	595	else
399	IV length	596	{
400	SV * data	597	/* read: grow scalar as necessary */
401	IV dataoffset	598	svptr = SvGROW (data, length + dataoffset);
402	SV * callback	599	}
403	PROTOTYPE: $$$$$$
404	CODE:
405	read_write (aTHX_ 0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
406
407	void
408	aio_write(fh,offset,length,data,dataoffset,callback)
409	OutputStream fh
410	UV offset
411	IV length
412	SV * data
413	IV dataoffset
414	SV * callback
415	PROTOTYPE: $$$$$$
416	CODE:
417	read_write (aTHX_ 1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
418
419	void
420	aio_readahead(fh,offset,length,callback)
421	InputStream fh
422	UV offset
423	IV length
424	SV * callback
425	PROTOTYPE: $$$$
426	CODE:
427	{
428	aio_req req;
429		600
430	if (length < 0)	601	if (length < 0)
431	croak ("length must not be negative");	602	croak ("length must not be negative");
432		603
433	Newz (0, req, 1, aio_cb);	604	{
		605	dREQ;
434		606
435	if (!req)	607	req->type = ix;
436	croak ("out of memory during aio_req allocation");	608	req->fh = newSVsv (fh);
		609	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
		610	: IoOFP (sv_2io (fh)));
		611	req->offset = offset;
		612	req->length = length;
		613	req->data = SvREFCNT_inc (data);
		614	req->dataptr = (char *)svptr + dataoffset;
		615	req->callback = SvREFCNT_inc (callback);
		616
		617	send_req (req);
		618	}
		619	}
		620
		621	void
		622	aio_readahead(fh,offset,length,callback=&PL_sv_undef)
		623	SV * fh
		624	UV offset
		625	IV length
		626	SV * callback
		627	PROTOTYPE: $$$;$
		628	CODE:
		629	{
		630	dREQ;
437		631
438	req->type = REQ_READAHEAD;	632	req->type = REQ_READAHEAD;
		633	req->fh = newSVsv (fh);
439	req->fd = PerlIO_fileno (fh);	634	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
440	req->offset = offset;	635	req->offset = offset;
441	req->length = length;	636	req->length = length;
442	req->callback = SvREFCNT_inc (callback);
443		637
444	send_req (req);	638	send_req (req);
445	}	639	}
446		640
447	void	641	void
448	aio_stat(fh_or_path,callback)	642	aio_stat(fh_or_path,callback=&PL_sv_undef)
449	SV * fh_or_path	643	SV * fh_or_path
450	SV * callback	644	SV * callback
451	PROTOTYPE: $$
452	ALIAS:	645	ALIAS:
		646	aio_stat = REQ_STAT
453	aio_lstat = 1	647	aio_lstat = REQ_LSTAT
454	CODE:	648	CODE:
455	{	649	{
456	aio_req req;	650	dREQ;
457
458	Newz (0, req, 1, aio_cb);
459
460	if (!req)
461	croak ("out of memory during aio_req allocation");
462		651
463	New (0, req->statdata, 1, Stat_t);	652	New (0, req->statdata, 1, Stat_t);
464
465	if (!req->statdata)	653	if (!req->statdata)
466	croak ("out of memory during aio_req->statdata allocation");	654	croak ("out of memory during aio_req->statdata allocation (sorry, i just leaked memory, too)");
467		655
468	if (SvPOK (fh_or_path))	656	if (SvPOK (fh_or_path))
469	{	657	{
470	req->type = ix ? REQ_LSTAT : REQ_STAT;	658	req->type = ix;
471	req->data = newSVsv (fh_or_path);	659	req->data = newSVsv (fh_or_path);
472	req->dataptr = SvPV_nolen (req->data);	660	req->dataptr = SvPVbyte_nolen (req->data);
473	}	661	}
474	else	662	else
475	{	663	{
476	req->type = REQ_FSTAT;	664	req->type = REQ_FSTAT;
		665	req->fh = newSVsv (fh_or_path);
477	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	666	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
478	}	667	}
479		668
480	req->callback = SvREFCNT_inc (callback);
481
482	send_req (req);	669	send_req (req);
483	}	670	}
484		671
485	void	672	void
486	aio_unlink(pathname,callback)	673	aio_unlink(pathname,callback=&PL_sv_undef)
487	SV * pathname	674	SV * pathname
488	SV * callback	675	SV * callback
489	PROTOTYPE: $$	676	ALIAS:
		677	aio_unlink = REQ_UNLINK
		678	aio_rmdir = REQ_RMDIR
490	CODE:	679	CODE:
491	{	680	{
492	aio_req req;	681	dREQ;
493		682
494	Newz (0, req, 1, aio_cb);	683	req->type = ix;
495
496	if (!req)
497	croak ("out of memory during aio_req allocation");
498
499	req->type = REQ_UNLINK;
500	req->data = newSVsv (pathname);	684	req->data = newSVsv (pathname);
501	req->dataptr = SvPV_nolen (req->data);	685	req->dataptr = SvPVbyte_nolen (req->data);
502	req->callback = SvREFCNT_inc (callback);
503		686
504	send_req (req);	687	send_req (req);
505	}	688	}
		689
		690	void
		691	aio_symlink(oldpath,newpath,callback=&PL_sv_undef)
		692	SV * oldpath
		693	SV * newpath
		694	SV * callback
		695	CODE:
		696	{
		697	dREQ;
		698
		699	req->type = REQ_SYMLINK;
		700	req->fh = newSVsv (oldpath);
		701	req->data2ptr = SvPVbyte_nolen (req->fh);
		702	req->data = newSVsv (newpath);
		703	req->dataptr = SvPVbyte_nolen (req->data);
		704
		705	send_req (req);
		706	}
		707
		708	void
		709	flush()
		710	PROTOTYPE:
		711	CODE:
		712	while (nreqs)
		713	{
		714	poll_wait ();
		715	poll_cb ();
		716	}
		717
		718	void
		719	poll()
		720	PROTOTYPE:
		721	CODE:
		722	if (nreqs)
		723	{
		724	poll_wait ();
		725	poll_cb ();
		726	}
506		727
507	int	728	int
508	poll_fileno()	729	poll_fileno()
509	PROTOTYPE:	730	PROTOTYPE:
510	CODE:	731	CODE:
511	RETVAL = respipe[0];	732	RETVAL = respipe [0];
512	OUTPUT:	733	OUTPUT:
513	RETVAL	734	RETVAL
514		735
515	int	736	int
516	poll_cb(...)	737	poll_cb(...)
517	PROTOTYPE:	738	PROTOTYPE:
518	CODE:	739	CODE:
519	RETVAL = poll_cb (aTHX);	740	RETVAL = poll_cb ();
520	OUTPUT:	741	OUTPUT:
521	RETVAL	742	RETVAL
522		743
523	void	744	void
524	poll_wait()	745	poll_wait()
525	PROTOTYPE:	746	PROTOTYPE:
526	CODE:	747	CODE:
		748	if (nreqs)
527	poll_wait ();	749	poll_wait ();
528		750
529	int	751	int
530	nreqs()	752	nreqs()
531	PROTOTYPE:	753	PROTOTYPE:
532	CODE:	754	CODE:

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Comparing IO-AIO/AIO.xs (file contents): Revision 1.2 by root, Sun Jul 10 18:16:49 2005 UTC vs. Revision 1.22 by root, Tue Aug 16 22:22:18 2005 UTC

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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.2 by root, Sun Jul 10 18:16:49 2005 UTC vs.
Revision 1.22 by root, Tue Aug 16 22:22:18 2005 UTC