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

Comparing Linux-AIO/AIO.xs (file contents):
Revision 1.10 by root, Thu Aug 30 03:11:06 2001 UTC vs.
Revision 1.19 by root, Fri May 7 00:57:29 2004 UTC

…		…
		1	#define PERL_NO_GET_CONTEXT
		2
1	#include "EXTERN.h"	3	#include "EXTERN.h"
2	#include "perl.h"	4	#include "perl.h"
3	#include "XSUB.h"	5	#include "XSUB.h"
4		6
5	#include <sys/types.h>	7	#include <sys/types.h>
		8	#include <sys/stat.h>
6	#include <unistd.h>	9	#include <unistd.h>
7	#include <fcntl.h>	10	#include <fcntl.h>
8	#include <signal.h>	11	#include <signal.h>
9	#include <sched.h>	12	#include <sched.h>
10		13
		14	typedef void InputStream; / hack, but 5.6.1 is simply toooo old ;) */
		15	typedef void OutputStream; / hack, but 5.6.1 is simply toooo old ;) */
		16	typedef void InOutStream; / hack, but 5.6.1 is simply toooo old ;) */
		17
		18	#ifndef __NR_pread64
		19	# define __NR_pread64 __NR_pread
		20	#endif
		21	#ifndef __NR_pwrite64
		22	# define __NR_pwrite64 __NR_pwrite
		23	#endif
		24
11	#define STACKSIZE 1024 /* yeah */	25	#define STACKSIZE 1024 /* yeah */
12		26
13	enum { REQ_QUIT, REQ_READ, REQ_WRITE, REQ_OPEN, REQ_CLOSE };	27	enum { REQ_QUIT, REQ_OPEN, REQ_CLOSE, REQ_READ, REQ_WRITE, REQ_STAT, REQ_LSTAT, REQ_FSTAT};
14		28
15	typedef struct {	29	typedef struct {
16	char stack[STACKSIZE];	30	char stack[STACKSIZE];
17	} aio_thread;	31	} aio_thread;
18		32
19	typedef struct {	33	typedef struct aio_cb {
		34	struct aio_cb *next;
		35
20	int type;	36	int type;
21	aio_thread *thread;	37	aio_thread *thread;
22		38
23	/* read/write */
24	int fd;	39	int fd;
25	off_t offset;	40	off_t offset;
26	size_t length;	41	size_t length;
27	ssize_t result;	42	ssize_t result;
28	mode_t mode; /* open */	43	mode_t mode; /* open */
29	int errorno;	44	int errorno;
30	SV data, callback;	45	SV data, callback;
31	void *dataptr;	46	void *dataptr;
32	STRLEN dataoffset;	47	STRLEN dataoffset;
		48
		49	struct stat64 *statdata;
33	} aio_cb;	50	} aio_cb;
34		51
35	typedef aio_cb *aio_req;	52	typedef aio_cb *aio_req;
36		53
37	static int started;	54	static int started;
38	static int nreqs;	55	static int nreqs;
39	static int reqpipe[2], respipe[2];	56	static int reqpipe[2], respipe[2];
40		57
		58	static aio_req qs, qe; /* queue start, queue end */
		59
41	static int aio_proc(void *arg);	60	static int aio_proc(void *arg);
42		61
43	static void	62	static void
44	start_thread(void)	63	start_thread (void)
45	{	64	{
46	aio_thread *thr;	65	aio_thread *thr;
47		66
48	New (0, thr, 1, aio_thread);	67	New (0, thr, 1, aio_thread);
49		68
55	else	74	else
56	Safefree (thr);	75	Safefree (thr);
57	}	76	}
58		77
59	static void	78	static void
		79	send_reqs (void)
		80	{
		81	/* this write is atomic */
		82	while (qs && write (reqpipe[1], &qs, sizeof qs) == sizeof qs)
		83	{
		84	qs = qs->next;
		85	if (!qs) qe = 0;
		86	}
		87	}
		88
		89	static void
		90	send_req (aio_req req)
		91	{
		92	nreqs++;
		93	req->next = 0;
		94
		95	if (qe)
		96	qe->next = req;
		97	else
		98	qe = qs = req;
		99
		100	send_reqs ();
		101	}
		102
		103	static void
60	end_thread(void)	104	end_thread (void)
61	{	105	{
62	aio_req req;	106	aio_req req;
63	New (0, req, 1, aio_cb);	107	New (0, req, 1, aio_cb);
64	req->type = REQ_QUIT;	108	req->type = REQ_QUIT;
65	write (reqpipe[1], &req, sizeof (aio_req));	109
		110	send_req (req);
66	}	111	}
67		112
68	static void	113	static void
69	send_req (aio_req req)	114	read_write (pTHX_
70	{
71	nreqs++;
72	write (reqpipe[1], &req, sizeof (aio_req));
73	}
74
75	static void
76	read_write (pTHX_ int dowrite, int fd, off_t offset, size_t length,	115	int dowrite, int fd, off_t offset, size_t length,
77	SV data, STRLEN dataoffset, SVcallback)	116	SV data, STRLEN dataoffset, SV callback)
78	{	117	{
79	aio_req req;	118	aio_req req;
80	STRLEN svlen;	119	STRLEN svlen;
81	char *svptr = SvPV (data, svlen);	120	char *svptr = SvPV (data, svlen);
		121
		122	SvUPGRADE (data, SVt_PV);
		123	SvPOK_on (data);
82		124
83	if (dataoffset < 0)	125	if (dataoffset < 0)
84	dataoffset += svlen;	126	dataoffset += svlen;
85		127
86	if (dataoffset < 0 \|\| dataoffset > svlen)	128	if (dataoffset < 0 \|\| dataoffset > svlen)
…		…
99	}	141	}
100		142
101	if (length < 0)	143	if (length < 0)
102	croak ("length must not be negative");	144	croak ("length must not be negative");
103		145
104	New (0, req, 1, aio_cb);	146	Newz (0, req, 1, aio_cb);
105		147
106	if (!req)	148	if (!req)
107	croak ("out of memory during aio_req allocation");	149	croak ("out of memory during aio_req allocation");
108		150
109	req->type = dowrite ? REQ_WRITE : REQ_READ;	151	req->type = dowrite ? REQ_WRITE : REQ_READ;
…		…
138		180
139	if (req->type == REQ_READ)	181	if (req->type == REQ_READ)
140	SvCUR_set (req->data, req->dataoffset	182	SvCUR_set (req->data, req->dataoffset
141	+ req->result > 0 ? req->result : 0);	183	+ req->result > 0 ? req->result : 0);
142		184
		185	if (req->data)
		186	SvREFCNT_dec (req->data);
		187
		188	if (req->type == REQ_STAT \|\| req->type == REQ_LSTAT \|\| req->type == REQ_FSTAT)
		189	{
		190	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
		191	PL_laststatval = req->result;
		192	PL_statcache.st_dev = req->statdata->st_dev;
		193	PL_statcache.st_ino = req->statdata->st_ino;
		194	PL_statcache.st_mode = req->statdata->st_mode;
		195	PL_statcache.st_nlink = req->statdata->st_nlink;
		196	PL_statcache.st_uid = req->statdata->st_uid;
		197	PL_statcache.st_gid = req->statdata->st_gid;
		198	PL_statcache.st_rdev = req->statdata->st_rdev;
		199	PL_statcache.st_size = req->statdata->st_size;
		200	PL_statcache.st_atime = req->statdata->st_atime;
		201	PL_statcache.st_mtime = req->statdata->st_mtime;
		202	PL_statcache.st_ctime = req->statdata->st_ctime;
		203	PL_statcache.st_blksize = req->statdata->st_blksize;
		204	PL_statcache.st_blocks = req->statdata->st_blocks;
		205
		206	Safefree (req->statdata);
		207	}
		208
143	PUSHMARK (SP);	209	PUSHMARK (SP);
144	XPUSHs (sv_2mortal (newSViv (req->result)));	210	XPUSHs (sv_2mortal (newSViv (req->result)));
145	PUTBACK;	211	PUTBACK;
146	call_sv (req->callback, G_VOID);	212	call_sv (req->callback, G_VOID);
147	SPAGAIN;	213	SPAGAIN;
148		214
149	SvREFCNT_dec (req->data);	215	if (req->callback)
150	SvREFCNT_dec (req->callback);	216	SvREFCNT_dec (req->callback);
151		217
152	errno = errorno;	218	errno = errorno;
153	nreqs--;	219	nreqs--;
154	count++;	220	count++;
155	}	221	}
156		222
157	Safefree (req);	223	Safefree (req);
158	}	224	}
159		225
		226	if (qs)
		227	send_reqs ();
		228
160	return count;	229	return count;
161	}	230	}
162		231
163	static sigset_t fullsigset;	232	static sigset_t fullsigset;
164		233
165	#undef errno	234	#undef errno
166	#include <asm/unistd.h>	235	#include <asm/unistd.h>
167		236
168	static int	237	static int
169	aio_proc(void *thr_arg)	238	aio_proc (void *thr_arg)
170	{	239	{
171	aio_thread *thr = thr_arg;	240	aio_thread *thr = thr_arg;
172	aio_req req;	241	aio_req req;
173	int errno;	242	int errno;
174		243
		244	/* this is very much x86 and kernel-specific :(:(:( */
		245	/* we rely on gcc's ability to create closures. */
		246	_syscall3(int,read,int,fd,char *,buf,size_t,count)
		247	_syscall3(int,write,int,fd,char *,buf,size_t,count)
		248
		249	_syscall3(int,open,char *,pathname,int,flags,mode_t,mode)
		250	_syscall1(int,close,int,fd)
		251
		252	_syscall5(int,pread64,int,fd,char *,buf,size_t,count,unsigned int,offset_lo,unsigned int,offset_hi)
		253	_syscall5(int,pwrite64,int,fd,char *,buf,size_t,count,unsigned int,offset_lo,unsigned int,offset_hi)
		254
		255	_syscall2(int,stat64, const char , filename, struct stat64 , buf)
		256	_syscall2(int,lstat64, const char , filename, struct stat64 , buf)
		257	_syscall2(int,fstat64, int, fd, struct stat64 *, buf)
		258
175	sigprocmask (SIG_SETMASK, &fullsigset, 0);	259	sigprocmask (SIG_SETMASK, &fullsigset, 0);
176
177	/* we rely on gcc's ability to create closures. */
178	_syscall3(int,lseek,int,fd,off_t,offset,int,whence);
179	_syscall3(int,read,int,fd,char *,buf,off_t,count);
180	_syscall3(int,write,int,fd,char *,buf,off_t,count);
181	_syscall3(int,open,char *,pathname,int,flags,mode_t,mode);
182	_syscall1(int,close,int,fd);
183		260
184	/* then loop */	261	/* then loop */
185	while (read (reqpipe[0], (void *)&req, sizeof (req)) == sizeof (req))	262	while (read (reqpipe[0], (void *)&req, sizeof (req)) == sizeof (req))
186	{	263	{
187	req->thread = thr;	264	req->thread = thr;
188	errno = 0;	265	errno = 0; /* strictly unnecessary */
189		266
190	if (req->type == REQ_READ \|\| req->type == REQ_WRITE)	267	switch (req->type)
191	{	268	{
192	if (lseek (req->fd, req->offset, SEEK_SET) == req->offset)	269	case REQ_READ: req->result = pread64 (req->fd, req->dataptr, req->length, req->offset & 0xffffffff, req->offset >> 32); break;
193	{	270	case REQ_WRITE: req->result = pwrite64(req->fd, req->dataptr, req->length, req->offset & 0xffffffff, req->offset >> 32); break;
194	if (req->type == REQ_READ)
195	req->result = read (req->fd, req->dataptr, req->length);
196	else
197	req->result = write(req->fd, req->dataptr, req->length);
198	}
199	}
200	else if (req->type == REQ_OPEN)
201	{
202	req->result = open (req->dataptr, req->fd, req->mode);	271	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
203	}
204	else if (req->type == REQ_CLOSE)
205	{
206	req->result = close (req->fd);	272	case REQ_CLOSE: req->result = close (req->fd); break;
207	}	273	case REQ_STAT: req->result = stat64 (req->dataptr, req->statdata); break;
208	else	274	case REQ_LSTAT: req->result = lstat64 (req->dataptr, req->statdata); break;
209	{	275	case REQ_FSTAT: req->result = fstat64 (req->fd, req->statdata); break;
		276
		277	case REQ_QUIT:
		278	default:
210	write (respipe[1], (void *)&req, sizeof (req));	279	write (respipe[1], (void *)&req, sizeof (req));
211	break;	280	return 0;
212	}	281	}
213		282
214	req->errorno = errno;	283	req->errorno = errno;
215	write (respipe[1], (void *)&req, sizeof (req));	284	write (respipe[1], (void *)&req, sizeof (req));
216	}	285	}
…		…
228	sigdelset (&fullsigset, SIGABRT);	297	sigdelset (&fullsigset, SIGABRT);
229	sigdelset (&fullsigset, SIGINT);	298	sigdelset (&fullsigset, SIGINT);
230		299
231	if (pipe (reqpipe) \|\| pipe (respipe))	300	if (pipe (reqpipe) \|\| pipe (respipe))
232	croak ("unable to initialize request or result pipe");	301	croak ("unable to initialize request or result pipe");
		302
		303	if (fcntl (reqpipe[1], F_SETFL, O_NONBLOCK))
		304	croak ("cannot set result pipe to nonblocking mode");
233		305
234	if (fcntl (respipe[0], F_SETFL, O_NONBLOCK))	306	if (fcntl (respipe[0], F_SETFL, O_NONBLOCK))
235	croak ("cannot set result pipe to nonblocking mode");	307	croak ("cannot set result pipe to nonblocking mode");
236	}	308	}
237		309
…		…
253	{	325	{
254	end_thread ();	326	end_thread ();
255	cur--;	327	cur--;
256	}	328	}
257		329
258	poll_cb ();
259	while (started > nthreads)	330	while (started > nthreads)
260	{	331	{
261	sched_yield ();	332	fd_set rfd;
		333	FD_ZERO(&rfd);
		334	FD_SET(respipe[0], &rfd);
		335
		336	select (respipe[0] + 1, &rfd, 0, 0, 0);
262	poll_cb ();	337	poll_cb (aTHX);
263	}	338	}
264		339
265	void	340	void
266	aio_read(fh,offset,length,data,dataoffset,callback)
267	PerlIO * fh
268	UV offset
269	STRLEN length
270	SV * data
271	STRLEN dataoffset
272	SV * callback
273	PROTOTYPE: $$$$$$
274	ALIAS:
275	aio_write = 1
276	CODE:
277	SvUPGRADE (data, SVt_PV);
278	SvPOK_on (data);
279	read_write (aTHX_ ix, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
280
281	void
282	aio_open(pathname,flags,mode,callback)	341	aio_open(pathname,flags,mode,callback)
283	char * pathname	342	SV * pathname
284	int flags	343	int flags
285	int mode	344	int mode
286	SV * callback	345	SV * callback
287	PROTOTYPE: $$$$	346	PROTOTYPE: $$$$
288	CODE:	347	CODE:
289	aio_req req;	348	aio_req req;
290		349
291	New (0, req, 1, aio_cb);	350	Newz (0, req, 1, aio_cb);
292		351
293	if (!req)	352	if (!req)
294	croak ("out of memory during aio_req allocation");	353	croak ("out of memory during aio_req allocation");
295		354
296	req->type = REQ_OPEN;	355	req->type = REQ_OPEN;
297	req->dataptr = pathname;	356	req->data = newSVsv (pathname);
		357	req->dataptr = SvPV_nolen (req->data);
298	req->fd = flags;	358	req->fd = flags;
299	req->mode = mode;	359	req->mode = mode;
300	req->callback = SvREFCNT_inc (callback);	360	req->callback = SvREFCNT_inc (callback);
301		361
302	send_req (req);	362	send_req (req);
303		363
304	void	364	void
305	aio_close(fh,callback)	365	aio_close(fh,callback)
306	PerlIO * fh	366	InputStream fh
307	SV * callback	367	SV * callback
308	PROTOTYPE: $	368	PROTOTYPE: $$
309	CODE:	369	CODE:
310	aio_req req;	370	aio_req req;
311		371
312	New (0, req, 1, aio_cb);	372	Newz (0, req, 1, aio_cb);
313		373
314	if (!req)	374	if (!req)
315	croak ("out of memory during aio_req allocation");	375	croak ("out of memory during aio_req allocation");
316		376
317	req->type = REQ_CLOSE;	377	req->type = REQ_CLOSE;
318	req->fd = PerlIO_fileno (fh);	378	req->fd = PerlIO_fileno (fh);
319	req->callback = SvREFCNT_inc (callback);	379	req->callback = SvREFCNT_inc (callback);
320		380
321	send_req (req);	381	send_req (req);
322		382
		383	void
		384	aio_read(fh,offset,length,data,dataoffset,callback)
		385	InputStream fh
		386	UV offset
		387	IV length
		388	SV * data
		389	IV dataoffset
		390	SV * callback
		391	PROTOTYPE: $$$$$$
		392	CODE:
		393	read_write (aTHX_ 0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
		394
		395	void
		396	aio_write(fh,offset,length,data,dataoffset,callback)
		397	OutputStream fh
		398	UV offset
		399	IV length
		400	SV * data
		401	IV dataoffset
		402	SV * callback
		403	PROTOTYPE: $$$$$$
		404	CODE:
		405	read_write (aTHX_ 1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
		406
		407	void
		408	aio_stat(fh_or_path,callback)
		409	SV * fh_or_path
		410	SV * callback
		411	PROTOTYPE: $$
		412	ALIAS:
		413	aio_lstat = 1
		414	CODE:
		415	aio_req req;
		416
		417	Newz (0, req, 1, aio_cb);
		418
		419	if (!req)
		420	croak ("out of memory during aio_req allocation");
		421
		422	New (0, req->statdata, 1, struct stat64);
		423
		424	if (!req->statdata)
		425	croak ("out of memory during aio_req->statdata allocation");
		426
		427	if (SvPOK (fh_or_path))
		428	{
		429	req->type = ix ? REQ_LSTAT : REQ_STAT;
		430	req->data = newSVsv (fh_or_path);
		431	req->dataptr = SvPV_nolen (req->data);
		432	}
		433	else
		434	{
		435	req->type = REQ_FSTAT;
		436	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		437	}
		438
		439	req->callback = SvREFCNT_inc (callback);
		440
		441	send_req (req);
		442
323	int	443	int
324	poll_fileno()	444	poll_fileno()
325	PROTOTYPE:	445	PROTOTYPE:
326	CODE:	446	CODE:
327	RETVAL = respipe[0];	447	RETVAL = respipe[0];

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Comparing Linux-AIO/AIO.xs (file contents): Revision 1.10 by root, Thu Aug 30 03:11:06 2001 UTC vs. Revision 1.19 by root, Fri May 7 00:57:29 2004 UTC

Diff Legend

Comparing Linux-AIO/AIO.xs (file contents):
Revision 1.10 by root, Thu Aug 30 03:11:06 2001 UTC vs.
Revision 1.19 by root, Fri May 7 00:57:29 2004 UTC