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

Comparing Linux-AIO/AIO.xs (file contents):
Revision 1.12 by root, Tue Dec 25 02:33:48 2001 UTC vs.
Revision 1.25 by root, Thu Jul 7 22:24:09 2005 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 ;) */
11	typedef void InOutStream; / hack, but 5.6.1 is simply toooo old ;) */	16	typedef void InOutStream; / hack, but 5.6.1 is simply toooo old ;) */
12		17
13	#define STACKSIZE 1024 /* yeah */	18	// 128 seems to be enough most everywhere. alpha needs 256.
		19	#define STACKSIZE (256 * sizeof (long))
14		20
15	enum { REQ_QUIT, REQ_READ, REQ_WRITE, REQ_OPEN, REQ_CLOSE };	21	enum {
		22	REQ_QUIT,
		23	REQ_OPEN, REQ_CLOSE, REQ_READ, REQ_WRITE,
		24	REQ_STAT, REQ_LSTAT, REQ_FSTAT, REQ_UNLINK
		25	};
16		26
17	typedef struct {	27	typedef struct {
18	char stack[STACKSIZE];	28	char stack[STACKSIZE];
19	} aio_thread;	29	} aio_thread;
20		30
21	typedef struct {	31	typedef struct aio_cb {
		32	struct aio_cb *next;
		33
22	int type;	34	int type;
23	aio_thread *thread;	35	aio_thread *thread;
24		36
25	/* read/write */
26	int fd;	37	int fd;
27	off_t offset;	38	off_t offset;
28	size_t length;	39	size_t length;
29	ssize_t result;	40	ssize_t result;
30	mode_t mode; /* open */	41	mode_t mode; /* open */
31	int errorno;	42	int errorno;
32	SV data, callback;	43	SV data, callback;
33	void *dataptr;	44	void *dataptr;
34	STRLEN dataoffset;	45	STRLEN dataoffset;
		46
		47	Stat_t *statdata;
35	} aio_cb;	48	} aio_cb;
36		49
37	typedef aio_cb *aio_req;	50	typedef aio_cb *aio_req;
38		51
39	static int started;	52	static int started;
40	static int nreqs;	53	static int nreqs;
41	static int reqpipe[2], respipe[2];	54	static int reqpipe[2], respipe[2];
42		55
		56	static aio_req qs, qe; /* queue start, queue end */
		57
43	static int aio_proc(void *arg);	58	static int aio_proc(void *arg);
44		59
45	static void	60	static void
46	start_thread(void)	61	start_thread (void)
47	{	62	{
48	aio_thread *thr;	63	aio_thread *thr;
49		64
50	New (0, thr, 1, aio_thread);	65	New (0, thr, 1, aio_thread);
51		66
52	if (clone (aio_proc,	67	if (clone (aio_proc,
53	&(thr->stack[STACKSIZE]),	68	&(thr->stack[STACKSIZE - sizeof (long)]),
54	CLONE_VM\|CLONE_FS\|CLONE_FILES\|CLONE_SIGHAND,	69	CLONE_VM\|CLONE_FS\|CLONE_FILES,
55	thr) >= 0)	70	thr) >= 0)
56	started++;	71	started++;
57	else	72	else
58	Safefree (thr);	73	Safefree (thr);
59	}	74	}
60		75
61	static void	76	static void
		77	send_reqs (void)
		78	{
		79	/* this write is atomic */
		80	while (qs && write (reqpipe[1], &qs, sizeof qs) == sizeof qs)
		81	{
		82	qs = qs->next;
		83	if (!qs) qe = 0;
		84	}
		85	}
		86
		87	static void
		88	send_req (aio_req req)
		89	{
		90	nreqs++;
		91	req->next = 0;
		92
		93	if (qe)
		94	{
		95	qe->next = req;
		96	qe = req;
		97	}
		98	else
		99	qe = qs = req;
		100
		101	send_reqs ();
		102	}
		103
		104	static void
62	end_thread(void)	105	end_thread (void)
63	{	106	{
64	aio_req req;	107	aio_req req;
65	New (0, req, 1, aio_cb);	108	New (0, req, 1, aio_cb);
66	req->type = REQ_QUIT;	109	req->type = REQ_QUIT;
67	write (reqpipe[1], &req, sizeof (aio_req));	110
		111	send_req (req);
68	}	112	}
69		113
70	static void	114	static void
71	send_req (aio_req req)	115	read_write (pTHX_
72	{
73	nreqs++;
74	write (reqpipe[1], &req, sizeof (aio_req));
75	}
76
77	static void
78	read_write (pTHX_ int dowrite, int fd, off_t offset, size_t length,	116	int dowrite, int fd, off_t offset, size_t length,
79	SV data, STRLEN dataoffset, SVcallback)	117	SV data, STRLEN dataoffset, SV callback)
80	{	118	{
81	aio_req req;	119	aio_req req;
82	STRLEN svlen;	120	STRLEN svlen;
83	char *svptr = SvPV (data, svlen);	121	char *svptr = SvPV (data, svlen);
		122
		123	SvUPGRADE (data, SVt_PV);
		124	SvPOK_on (data);
84		125
85	if (dataoffset < 0)	126	if (dataoffset < 0)
86	dataoffset += svlen;	127	dataoffset += svlen;
87		128
88	if (dataoffset < 0 \|\| dataoffset > svlen)	129	if (dataoffset < 0 \|\| dataoffset > svlen)
101	}	142	}
102		143
103	if (length < 0)	144	if (length < 0)
104	croak ("length must not be negative");	145	croak ("length must not be negative");
105		146
106	New (0, req, 1, aio_cb);	147	Newz (0, req, 1, aio_cb);
107		148
108	if (!req)	149	if (!req)
109	croak ("out of memory during aio_req allocation");	150	croak ("out of memory during aio_req allocation");
110		151
111	req->type = dowrite ? REQ_WRITE : REQ_READ;	152	req->type = dowrite ? REQ_WRITE : REQ_READ;
…		…
117	req->callback = SvREFCNT_inc (callback);	158	req->callback = SvREFCNT_inc (callback);
118		159
119	send_req (req);	160	send_req (req);
120	}	161	}
121		162
		163	static void
		164	poll_wait ()
		165	{
		166	fd_set rfd;
		167	FD_ZERO(&rfd);
		168	FD_SET(respipe[0], &rfd);
		169
		170	select (respipe[0] + 1, &rfd, 0, 0, 0);
		171	}
		172
122	static int	173	static int
123	poll_cb (pTHX)	174	poll_cb (pTHX)
124	{	175	{
125	dSP;	176	dSP;
126	int count = 0;	177	int count = 0;
127	aio_req req;	178	aio_req req;
128		179
129	while (read (respipe[0], (void *)&req, sizeof (req)) == sizeof (req))	180	while (read (respipe[0], (void *)&req, sizeof (req)) == sizeof (req))
130	{	181	{
		182	nreqs--;
		183
131	if (req->type == REQ_QUIT)	184	if (req->type == REQ_QUIT)
132	{	185	{
133	Safefree (req->thread);	186	Safefree (req->thread);
134	started--;	187	started--;
135	}	188	}
…		…
140		193
141	if (req->type == REQ_READ)	194	if (req->type == REQ_READ)
142	SvCUR_set (req->data, req->dataoffset	195	SvCUR_set (req->data, req->dataoffset
143	+ req->result > 0 ? req->result : 0);	196	+ req->result > 0 ? req->result : 0);
144		197
		198	if (req->data)
		199	SvREFCNT_dec (req->data);
		200
		201	if (req->type == REQ_STAT \|\| req->type == REQ_LSTAT \|\| req->type == REQ_FSTAT)
		202	{
		203	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
		204	PL_laststatval = req->result;
		205	PL_statcache = *(req->statdata);
		206
		207	Safefree (req->statdata);
		208	}
		209
145	PUSHMARK (SP);	210	PUSHMARK (SP);
146	XPUSHs (sv_2mortal (newSViv (req->result)));	211	XPUSHs (sv_2mortal (newSViv (req->result)));
147	PUTBACK;	212	PUTBACK;
148	call_sv (req->callback, G_VOID);	213	call_sv (req->callback, G_VOID);
149	SPAGAIN;	214	SPAGAIN;
150		215
151	SvREFCNT_dec (req->data);	216	if (req->callback)
152	SvREFCNT_dec (req->callback);	217	SvREFCNT_dec (req->callback);
153		218
154	errno = errorno;	219	errno = errorno;
155	nreqs--;
156	count++;	220	count++;
157	}	221	}
158		222
159	Safefree (req);	223	Safefree (req);
160	}	224	}
161		225
		226	if (qs)
		227	send_reqs ();
		228
162	return count;	229	return count;
163	}	230	}
164		231
165	static sigset_t fullsigset;	232	static sigset_t fullsigset;
166		233
167	#undef errno	234	#undef errno
168	#include <asm/unistd.h>	235	#include <asm/unistd.h>
		236	#include <sys/prctl.h>
		237
		238	#if __alpha \|\| __ia64 \|\| __hppa \|\| __sparc64__ \|\| __v850__
		239	# define stat kernelstat
		240	# define stat64 kernelstat64
		241	# include <asm/stat.h>
		242	# undef stat
		243	# undef stat64
		244	#else
		245	# define kernelstat stat
		246	# define kernelstat64 stat64
		247	#endif
		248
		249	#define COPY_STATDATA \
		250	req->statdata->st_dev = statdata.st_dev; \
		251	req->statdata->st_ino = statdata.st_ino; \
		252	req->statdata->st_mode = statdata.st_mode; \
		253	req->statdata->st_nlink = statdata.st_nlink; \
		254	req->statdata->st_uid = statdata.st_uid; \
		255	req->statdata->st_gid = statdata.st_gid; \
		256	req->statdata->st_rdev = statdata.st_rdev; \
		257	req->statdata->st_size = statdata.st_size; \
		258	req->statdata->st_atime = statdata.st_atime; \
		259	req->statdata->st_mtime = statdata.st_mtime; \
		260	req->statdata->st_ctime = statdata.st_ctime; \
		261	req->statdata->st_blksize = statdata.st_blksize; \
		262	req->statdata->st_blocks = statdata.st_blocks; \
169		263
170	static int	264	static int
171	aio_proc(void *thr_arg)	265	aio_proc (void *thr_arg)
172	{	266	{
173	aio_thread *thr = thr_arg;	267	aio_thread *thr = thr_arg;
174	aio_req req;	268	aio_req req;
175	int errno;	269	int errno;
176		270
		271	/* this is very much kernel-specific :(:(:( */
177	/* we rely on gcc's ability to create closures. */	272	/* 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)	273	_syscall3(int,read,int,fd,char *,buf,size_t,count)
180	_syscall3(int,write,int,fd,char *,buf,off_t,count)	274	_syscall3(int,write,int,fd,char *,buf,size_t,count)
		275
181	_syscall3(int,open,char *,pathname,int,flags,mode_t,mode)	276	_syscall3(int,open,char *,pathname,int,flags,mode_t,mode)
182	_syscall1(int,close,int,fd)	277	_syscall1(int,close,int,fd)
183		278
		279	#if __NR_pread64
		280	_syscall5(int,pread64,int,fd,char *,buf,size_t,count,unsigned int,offset_lo,unsigned int,offset_hi)
		281	_syscall5(int,pwrite64,int,fd,char *,buf,size_t,count,unsigned int,offset_lo,unsigned int,offset_hi)
		282	#elif __NR_pread
		283	_syscall4(int,pread,int,fd,char *,buf,size_t,count,offset_t,offset)
		284	_syscall4(int,pwrite,int,fd,char *,buf,size_t,count,offset_t,offset)
		285	#else
		286	# error "neither pread nor pread64 defined"
		287	#endif
		288
		289
		290	#if __NR_stat64
		291	_syscall2(int,stat64, const char , filename, struct kernelstat64 , buf)
		292	_syscall2(int,lstat64, const char , filename, struct kernelstat64 , buf)
		293	_syscall2(int,fstat64, int, fd, struct kernelstat64 *, buf)
		294	#elif __NR_stat
		295	_syscall2(int,stat, const char , filename, struct kernelstat , buf)
		296	_syscall2(int,lstat, const char , filename, struct kernelstat , buf)
		297	_syscall2(int,fstat, int, fd, struct kernelstat *, buf)
		298	#else
		299	# error "neither stat64 nor stat defined"
		300	#endif
		301
		302	_syscall1(int,unlink, char *, filename);
		303
184	sigprocmask (SIG_SETMASK, &fullsigset, 0);	304	sigprocmask (SIG_SETMASK, &fullsigset, 0);
		305	prctl (PR_SET_PDEATHSIG, SIGKILL);
185		306
186	/* then loop */	307	/* then loop */
187	while (read (reqpipe[0], (void *)&req, sizeof (req)) == sizeof (req))	308	while (read (reqpipe[0], (void *)&req, sizeof (req)) == sizeof (req))
188	{	309	{
189	req->thread = thr;	310	req->thread = thr;
190	errno = 0;	311	errno = 0; /* strictly unnecessary */
191		312
192	if (req->type == REQ_READ \|\| req->type == REQ_WRITE)	313	switch (req->type)
193	{	314	{
194	if (lseek (req->fd, req->offset, SEEK_SET) == req->offset)	315	#if __NR_pread64
195	{	316	case REQ_READ: req->result = pread64 (req->fd, req->dataptr, req->length, req->offset & 0xffffffff, req->offset >> 32); break;
196	if (req->type == REQ_READ)	317	case REQ_WRITE: req->result = pwrite64(req->fd, req->dataptr, req->length, req->offset & 0xffffffff, req->offset >> 32); break;
		318	#else
197	req->result = read (req->fd, req->dataptr, req->length);	319	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
198	else
199	req->result = write(req->fd, req->dataptr, req->length);	320	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
200	}	321	#endif
201	}	322	#if __NR_stat64
202	else if (req->type == REQ_OPEN)	323	struct kernelstat64 statdata;
203	{	324	case REQ_STAT: req->result = stat64 (req->dataptr, &statdata); COPY_STATDATA; break;
		325	case REQ_LSTAT: req->result = lstat64 (req->dataptr, &statdata); COPY_STATDATA; break;
		326	case REQ_FSTAT: req->result = fstat64 (req->fd, &statdata); COPY_STATDATA; break;
		327	#else
		328	struct kernelstat statdata;
		329	case REQ_STAT: req->result = stat (req->dataptr, &statdata); COPY_STATDATA; break;
		330	case REQ_LSTAT: req->result = lstat (req->dataptr, &statdata); COPY_STATDATA; break;
		331	case REQ_FSTAT: req->result = fstat (req->fd, &statdata); COPY_STATDATA; break;
		332	#endif
204	req->result = open (req->dataptr, req->fd, req->mode);	333	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
205	}
206	else if (req->type == REQ_CLOSE)
207	{
208	req->result = close (req->fd);	334	case REQ_CLOSE: req->result = close (req->fd); break;
209	}	335	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
210	else	336
211	{	337	case REQ_QUIT:
		338	default:
212	write (respipe[1], (void *)&req, sizeof (req));	339	write (respipe[1], (void *)&req, sizeof (req));
213	break;	340	return 0;
214	}	341	}
215		342
216	req->errorno = errno;	343	req->errorno = errno;
217	write (respipe[1], (void *)&req, sizeof (req));	344	write (respipe[1], (void *)&req, sizeof (req));
218	}	345	}
…		…
230	sigdelset (&fullsigset, SIGABRT);	357	sigdelset (&fullsigset, SIGABRT);
231	sigdelset (&fullsigset, SIGINT);	358	sigdelset (&fullsigset, SIGINT);
232		359
233	if (pipe (reqpipe) \|\| pipe (respipe))	360	if (pipe (reqpipe) \|\| pipe (respipe))
234	croak ("unable to initialize request or result pipe");	361	croak ("unable to initialize request or result pipe");
		362
		363	if (fcntl (reqpipe[1], F_SETFL, O_NONBLOCK))
		364	croak ("cannot set result pipe to nonblocking mode");
235		365
236	if (fcntl (respipe[0], F_SETFL, O_NONBLOCK))	366	if (fcntl (respipe[0], F_SETFL, O_NONBLOCK))
237	croak ("cannot set result pipe to nonblocking mode");	367	croak ("cannot set result pipe to nonblocking mode");
238	}	368	}
239		369
…		…
255	{	385	{
256	end_thread ();	386	end_thread ();
257	cur--;	387	cur--;
258	}	388	}
259		389
260	poll_cb ();
261	while (started > nthreads)	390	while (started > nthreads)
262	{	391	{
263	sched_yield ();	392	poll_wait ();
264	fcntl (respipe[0], F_SETFL, 0);
265	poll_cb ();	393	poll_cb (aTHX);
266	fcntl (respipe[0], F_SETFL, O_NONBLOCK);
267	}	394	}
268		395
269	void	396	void
		397	aio_open(pathname,flags,mode,callback)
		398	SV * pathname
		399	int flags
		400	int mode
		401	SV * callback
		402	PROTOTYPE: $$$$
		403	CODE:
		404	aio_req req;
		405
		406	Newz (0, req, 1, aio_cb);
		407
		408	if (!req)
		409	croak ("out of memory during aio_req allocation");
		410
		411	req->type = REQ_OPEN;
		412	req->data = newSVsv (pathname);
		413	req->dataptr = SvPV_nolen (req->data);
		414	req->fd = flags;
		415	req->mode = mode;
		416	req->callback = SvREFCNT_inc (callback);
		417
		418	send_req (req);
		419
		420	void
		421	aio_close(fh,callback)
		422	InputStream fh
		423	SV * callback
		424	PROTOTYPE: $$
		425	CODE:
		426	aio_req req;
		427
		428	Newz (0, req, 1, aio_cb);
		429
		430	if (!req)
		431	croak ("out of memory during aio_req allocation");
		432
		433	req->type = REQ_CLOSE;
		434	req->fd = PerlIO_fileno (fh);
		435	req->callback = SvREFCNT_inc (callback);
		436
		437	send_req (req);
		438
		439	void
270	aio_read(fh,offset,length,data,dataoffset,callback)	440	aio_read(fh,offset,length,data,dataoffset,callback)
271	InOutStream fh	441	InputStream fh
272	UV offset	442	UV offset
273	IV length	443	IV length
274	SV * data	444	SV * data
275	IV dataoffset	445	IV dataoffset
276	SV * callback	446	SV * callback
277	PROTOTYPE: $$$$$$	447	PROTOTYPE: $$$$$$
278	ALIAS:	448	CODE:
279	aio_write = 1
280	CODE:
281	SvUPGRADE (data, SVt_PV);
282	SvPOK_on (data);
283	read_write (aTHX_ ix, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);	449	read_write (aTHX_ 0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
284		450
285	void	451	void
286	aio_open(pathname,flags,mode,callback)	452	aio_write(fh,offset,length,data,dataoffset,callback)
287	char * pathname	453	OutputStream fh
288	int flags	454	UV offset
289	int mode	455	IV length
		456	SV * data
		457	IV dataoffset
290	SV * callback	458	SV * callback
291	PROTOTYPE: $$$$	459	PROTOTYPE: $$$$$$
		460	CODE:
		461	read_write (aTHX_ 1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
		462
		463	void
		464	aio_stat(fh_or_path,callback)
		465	SV * fh_or_path
		466	SV * callback
		467	PROTOTYPE: $$
		468	ALIAS:
		469	aio_lstat = 1
292	CODE:	470	CODE:
293	aio_req req;	471	aio_req req;
294		472
295	New (0, req, 1, aio_cb);	473	Newz (0, req, 1, aio_cb);
296		474
297	if (!req)	475	if (!req)
298	croak ("out of memory during aio_req allocation");	476	croak ("out of memory during aio_req allocation");
299		477
		478	New (0, req->statdata, 1, Stat_t);
		479
		480	if (!req->statdata)
		481	croak ("out of memory during aio_req->statdata allocation");
		482
		483	if (SvPOK (fh_or_path))
		484	{
		485	req->type = ix ? REQ_LSTAT : REQ_STAT;
		486	req->data = newSVsv (fh_or_path);
		487	req->dataptr = SvPV_nolen (req->data);
		488	}
		489	else
		490	{
300	req->type = REQ_OPEN;	491	req->type = REQ_FSTAT;
301	req->dataptr = pathname;	492	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
302	req->fd = flags;	493	}
303	req->mode = mode;	494
304	req->callback = SvREFCNT_inc (callback);	495	req->callback = SvREFCNT_inc (callback);
305		496
306	send_req (req);	497	send_req (req);
307		498
308	void	499	void
309	aio_close(fh,callback)	500	aio_unlink(pathname,callback)
310	InOutStream fh	501	SV * pathname
311	SV * callback	502	SV * callback
312	PROTOTYPE: $	503	PROTOTYPE: $$
313	CODE:	504	CODE:
314	aio_req req;	505	aio_req req;
315		506
316	New (0, req, 1, aio_cb);	507	Newz (0, req, 1, aio_cb);
317		508
318	if (!req)	509	if (!req)
319	croak ("out of memory during aio_req allocation");	510	croak ("out of memory during aio_req allocation");
320		511
321	req->type = REQ_CLOSE;	512	req->type = REQ_UNLINK;
322	req->fd = PerlIO_fileno (fh);	513	req->data = newSVsv (pathname);
		514	req->dataptr = SvPV_nolen (req->data);
323	req->callback = SvREFCNT_inc (callback);	515	req->callback = SvREFCNT_inc (callback);
324		516
325	send_req (req);	517	send_req (req);
326		518
327	int	519	int
328	poll_fileno()	520	poll_fileno()
329	PROTOTYPE:	521	PROTOTYPE:
330	CODE:	522	CODE:
…		…
338	CODE:	530	CODE:
339	RETVAL = poll_cb (aTHX);	531	RETVAL = poll_cb (aTHX);
340	OUTPUT:	532	OUTPUT:
341	RETVAL	533	RETVAL
342		534
		535	void
		536	poll_wait()
		537	PROTOTYPE:
		538	CODE:
		539	poll_wait ();
		540
343	int	541	int
344	nreqs()	542	nreqs()
345	PROTOTYPE:	543	PROTOTYPE:
346	CODE:	544	CODE:
347	RETVAL = nreqs;	545	RETVAL = nreqs;

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Comparing Linux-AIO/AIO.xs (file contents): Revision 1.12 by root, Tue Dec 25 02:33:48 2001 UTC vs. Revision 1.25 by root, Thu Jul 7 22:24:09 2005 UTC

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Comparing Linux-AIO/AIO.xs (file contents):
Revision 1.12 by root, Tue Dec 25 02:33:48 2001 UTC vs.
Revision 1.25 by root, Thu Jul 7 22:24:09 2005 UTC