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

Comparing Linux-AIO/AIO.xs (file contents):
Revision 1.15 by root, Sat May 18 21:48:36 2002 UTC vs.
Revision 1.28 by root, Sat Jul 9 04:02:54 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>
6	#include <sys/stat.h>	8	#include <sys/stat.h>
7	#include <unistd.h>	9	#include <unistd.h>
8	#include <fcntl.h>	10	#include <fcntl.h>
9	#include <signal.h>	11	#include <signal.h>
10	#include <sched.h>	12	#include <sched.h>
		13	#include <endian.h>
11		14
12	typedef void InputStream; / hack, but 5.6.1 is simply toooo old ;) */	15	typedef void InputStream; / hack, but 5.6.1 is simply toooo old ;) */
13	typedef void OutputStream; / hack, but 5.6.1 is simply toooo old ;) */	16	typedef void OutputStream; / hack, but 5.6.1 is simply toooo old ;) */
14	typedef void InOutStream; / hack, but 5.6.1 is simply toooo old ;) */	17	typedef void InOutStream; / hack, but 5.6.1 is simply toooo old ;) */
15		18
16	#define STACKSIZE 1024 /* yeah */	19	#if __i386 \|\| __amd64
		20	# define STACKSIZE ( 256 * sizeof (long))
		21	#elif __ia64
		22	# define STACKSIZE (8192 * sizeof (long))
		23	#else
		24	# define STACKSIZE ( 512 * sizeof (long))
		25	#endif
17		26
18	enum { REQ_QUIT, REQ_OPEN, REQ_CLOSE, REQ_READ, REQ_WRITE, REQ_STAT, REQ_LSTAT, REQ_FSTAT};	27	enum {
		28	REQ_QUIT,
		29	REQ_OPEN, REQ_CLOSE, REQ_READ, REQ_WRITE,
		30	REQ_STAT, REQ_LSTAT, REQ_FSTAT, REQ_UNLINK
		31	};
19		32
20	typedef struct {	33	typedef struct {
21	char stack[STACKSIZE];	34	char stack[STACKSIZE];
22	} aio_thread;	35	} aio_thread;
23		36
24	typedef struct {	37	typedef struct aio_cb {
		38	struct aio_cb *next;
		39
25	int type;	40	int type;
26	aio_thread *thread;	41	aio_thread *thread;
27		42
28	int fd;	43	int fd;
29	off_t offset;	44	off_t offset;
33	int errorno;	48	int errorno;
34	SV data, callback;	49	SV data, callback;
35	void *dataptr;	50	void *dataptr;
36	STRLEN dataoffset;	51	STRLEN dataoffset;
37		52
38	struct stat64 *statdata;	53	Stat_t *statdata;
39	} aio_cb;	54	} aio_cb;
40		55
41	typedef aio_cb *aio_req;	56	typedef aio_cb *aio_req;
42		57
43	static int started;	58	static int started;
44	static int nreqs;	59	static int nreqs;
45	static int reqpipe[2], respipe[2];	60	static int reqpipe[2], respipe[2];
46		61
		62	static aio_req qs, qe; /* queue start, queue end */
		63
47	static int aio_proc(void *arg);	64	static int aio_proc(void *arg);
48		65
49	static void	66	static void
50	start_thread(void)	67	start_thread (void)
51	{	68	{
52	aio_thread *thr;	69	aio_thread *thr;
53		70
54	New (0, thr, 1, aio_thread);	71	New (0, thr, 1, aio_thread);
55		72
56	if (clone (aio_proc,	73	if (clone (aio_proc,
57	&(thr->stack[STACKSIZE]),	74	&(thr->stack[STACKSIZE - 16]),
58	CLONE_VM\|CLONE_FS\|CLONE_FILES\|CLONE_SIGHAND,	75	CLONE_VM\|CLONE_FS\|CLONE_FILES,
59	thr) >= 0)	76	thr) >= 0)
60	started++;	77	started++;
61	else	78	else
62	Safefree (thr);	79	Safefree (thr);
63	}	80	}
64		81
65	static void	82	static void
		83	send_reqs (void)
		84	{
		85	/* this write is atomic */
		86	while (qs && write (reqpipe[1], &qs, sizeof qs) == sizeof qs)
		87	{
		88	qs = qs->next;
		89	if (!qs) qe = 0;
		90	}
		91	}
		92
		93	static void
		94	send_req (aio_req req)
		95	{
		96	nreqs++;
		97	req->next = 0;
		98
		99	if (qe)
		100	{
		101	qe->next = req;
		102	qe = req;
		103	}
		104	else
		105	qe = qs = req;
		106
		107	send_reqs ();
		108	}
		109
		110	static void
66	end_thread(void)	111	end_thread (void)
67	{	112	{
68	aio_req req;	113	aio_req req;
69	New (0, req, 1, aio_cb);	114	New (0, req, 1, aio_cb);
70	req->type = REQ_QUIT;	115	req->type = REQ_QUIT;
71	write (reqpipe[1], &req, sizeof (aio_req));	116
		117	send_req (req);
72	}	118	}
73		119
74	static void	120	static void
75	send_req (aio_req req)	121	read_write (pTHX_
76	{
77	nreqs++;
78	write (reqpipe[1], &req, sizeof (aio_req));
79	}
80
81	static void
82	read_write (pTHX_ int dowrite, int fd, off_t offset, size_t length,	122	int dowrite, int fd, off_t offset, size_t length,
83	SV data, STRLEN dataoffset, SVcallback)	123	SV data, STRLEN dataoffset, SV callback)
84	{	124	{
85	aio_req req;	125	aio_req req;
86	STRLEN svlen;	126	STRLEN svlen;
87	char *svptr = SvPV (data, svlen);	127	char *svptr = SvPV (data, svlen);
88		128
…		…
124	req->callback = SvREFCNT_inc (callback);	164	req->callback = SvREFCNT_inc (callback);
125		165
126	send_req (req);	166	send_req (req);
127	}	167	}
128		168
		169	static void
		170	poll_wait ()
		171	{
		172	fd_set rfd;
		173	FD_ZERO(&rfd);
		174	FD_SET(respipe[0], &rfd);
		175
		176	select (respipe[0] + 1, &rfd, 0, 0, 0);
		177	}
		178
129	static int	179	static int
130	poll_cb (pTHX)	180	poll_cb (pTHX)
131	{	181	{
132	dSP;	182	dSP;
133	int count = 0;	183	int count = 0;
134	aio_req req;	184	aio_req req;
135		185
136	while (read (respipe[0], (void *)&req, sizeof (req)) == sizeof (req))	186	while (read (respipe[0], (void *)&req, sizeof (req)) == sizeof (req))
137	{	187	{
		188	nreqs--;
		189
138	if (req->type == REQ_QUIT)	190	if (req->type == REQ_QUIT)
139	{	191	{
140	Safefree (req->thread);	192	Safefree (req->thread);
141	started--;	193	started--;
142	}	194	}
…		…
152	if (req->data)	204	if (req->data)
153	SvREFCNT_dec (req->data);	205	SvREFCNT_dec (req->data);
154		206
155	if (req->type == REQ_STAT \|\| req->type == REQ_LSTAT \|\| req->type == REQ_FSTAT)	207	if (req->type == REQ_STAT \|\| req->type == REQ_LSTAT \|\| req->type == REQ_FSTAT)
156	{	208	{
157	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	209	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
158	PL_laststatval = req->result;	210	PL_laststatval = req->result;
159	PL_statcache.st_dev = req->statdata->st_dev;	211	PL_statcache = *(req->statdata);
160	PL_statcache.st_ino = req->statdata->st_ino;
161	PL_statcache.st_mode = req->statdata->st_mode;
162	PL_statcache.st_nlink = req->statdata->st_nlink;
163	PL_statcache.st_uid = req->statdata->st_uid;
164	PL_statcache.st_gid = req->statdata->st_gid;
165	PL_statcache.st_rdev = req->statdata->st_rdev;
166	PL_statcache.st_size = req->statdata->st_size;
167	PL_statcache.st_atime = req->statdata->st_atime;
168	PL_statcache.st_mtime = req->statdata->st_mtime;
169	PL_statcache.st_ctime = req->statdata->st_ctime;
170	PL_statcache.st_blksize = req->statdata->st_blksize;
171	PL_statcache.st_blocks = req->statdata->st_blocks;
172		212
173	Safefree (req->statdata);	213	Safefree (req->statdata);
174	}	214	}
175		215
176	PUSHMARK (SP);	216	PUSHMARK (SP);
…		…
181		221
182	if (req->callback)	222	if (req->callback)
183	SvREFCNT_dec (req->callback);	223	SvREFCNT_dec (req->callback);
184		224
185	errno = errorno;	225	errno = errorno;
186	nreqs--;
187	count++;	226	count++;
188	}	227	}
189		228
190	Safefree (req);	229	Safefree (req);
191	}	230	}
192		231
		232	if (qs)
		233	send_reqs ();
		234
193	return count;	235	return count;
194	}	236	}
195		237
196	static sigset_t fullsigset;	238	static sigset_t fullsigset;
197		239
198	#undef errno	240	#undef errno
199	#include <asm/unistd.h>	241	#include <asm/unistd.h>
		242	#include <linux/types.h>
		243	#include <sys/prctl.h>
		244
		245	#if BYTE_ORDER == LITTLE_ENDIAN
		246	# define LONG_LONG_PAIR(HI, LO) LO, HI
		247	#elif BYTE_ORDER == BIG_ENDIAN
		248	# define LONG_LONG_PAIR(HI, LO) HI, LO
		249	#endif
		250
		251	#if __alpha \|\| __ia64 \|\| __hppa \|\| __v850__
		252	# define stat kernelstat
		253	# define stat64 kernelstat64
		254	# include <asm/stat.h>
		255	# undef stat
		256	# undef stat64
		257	#else
		258	# define kernelstat stat
		259	# define kernelstat64 stat64
		260	#endif
		261
		262	#define COPY_STATDATA \
		263	req->statdata->st_dev = statdata.st_dev; \
		264	req->statdata->st_ino = statdata.st_ino; \
		265	req->statdata->st_mode = statdata.st_mode; \
		266	req->statdata->st_nlink = statdata.st_nlink; \
		267	req->statdata->st_uid = statdata.st_uid; \
		268	req->statdata->st_gid = statdata.st_gid; \
		269	req->statdata->st_rdev = statdata.st_rdev; \
		270	req->statdata->st_size = statdata.st_size; \
		271	req->statdata->st_atime = statdata.st_atime; \
		272	req->statdata->st_mtime = statdata.st_mtime; \
		273	req->statdata->st_ctime = statdata.st_ctime; \
		274	req->statdata->st_blksize = statdata.st_blksize; \
		275	req->statdata->st_blocks = statdata.st_blocks; \
200		276
201	static int	277	static int
202	aio_proc(void *thr_arg)	278	aio_proc (void *thr_arg)
203	{	279	{
204	aio_thread *thr = thr_arg;	280	aio_thread *thr = thr_arg;
205	aio_req req;	281	aio_req req;
206	int errno;	282	int errno;
207		283
208	/* this is very much x86 and kernel-specific :(:(:( */	284	/* this is very much kernel-specific :(:(:( */
209	/* we rely on gcc's ability to create closures. */	285	/* we rely on gcc's ability to create closures. */
210	_syscall3(int,read,int,fd,char *,buf,size_t,count)	286	_syscall3(__kernel_size_t,read,unsigned int,fd,char *,buf,__kernel_size_t,count)
211	_syscall3(int,write,int,fd,char *,buf,size_t,count)	287	_syscall3(__kernel_size_t,write,unsigned int,fd,char *,buf,__kernel_size_t,count)
212		288
213	_syscall3(int,open,char *,pathname,int,flags,mode_t,mode)	289	_syscall3(int,open,char *,pathname,int,flags,int,mode)
214	_syscall1(int,close,int,fd)	290	_syscall1(int,close,unsigned int,fd)
215		291
		292	#ifndef __NR_pread64
		293	# define __NR_pread64 __NR_pread
		294	# define __NR_pwrite64 __NR_write
		295	#endif
216	_syscall5(int,pread,int,fd,char *,buf,size_t,count,unsigned int,offset_lo,unsigned int,offset_hi)	296	_syscall5(__kernel_ssize_t,pread64,unsigned int,fd,char *,buf,__kernel_size_t,count,unsigned int,offset_lh,unsigned int,offset_hl)
217	_syscall5(int,pwrite,int,fd,char *,buf,size_t,count,unsigned int,offset_lo,unsigned int,offset_hi)	297	_syscall5(__kernel_ssize_t,pwrite64,unsigned int,fd,char *,buf,__kernel_size_t,count,unsigned int,offset_lh,unsigned int,offset_hl)
218		298
		299	#if __NR_stat64
219	_syscall2(int,stat64, const char , filename, struct stat64 , buf)	300	_syscall2(int,stat64, const char , filename, struct kernelstat64 , buf)
220	_syscall2(int,lstat64, const char , filename, struct stat64 , buf)	301	_syscall2(int,lstat64, const char , filename, struct kernelstat64 , buf)
221	_syscall2(int,fstat64, int, fd, struct stat64 *, buf)	302	_syscall2(int,fstat64, int, fd, struct kernelstat64 *, buf)
		303	#elif __NR_stat
		304	_syscall2(int,stat, const char , filename, struct kernelstat , buf)
		305	_syscall2(int,lstat, const char , filename, struct kernelstat , buf)
		306	_syscall2(int,fstat, int, fd, struct kernelstat *, buf)
		307	#else
		308	# error "neither stat64 nor stat defined"
		309	#endif
		310
		311	_syscall1(int,unlink, char *, filename);
222		312
223	sigprocmask (SIG_SETMASK, &fullsigset, 0);	313	sigprocmask (SIG_SETMASK, &fullsigset, 0);
		314	prctl (PR_SET_PDEATHSIG, SIGKILL);
224		315
225	/* then loop */	316	/* then loop */
226	while (read (reqpipe[0], (void *)&req, sizeof (req)) == sizeof (req))	317	while (read (reqpipe[0], (void *)&req, sizeof (req)) == sizeof (req))
227	{	318	{
228	req->thread = thr;	319	req->thread = thr;
229	errno = 0; /* strictly unnecessary */	320	errno = 0; /* strictly unnecessary */
230		321
231	if (req->type == REQ_READ)	322	switch (req->type)
232	req->result = pread (req->fd, req->dataptr, req->length, req->offset & 0xffffffff, req->offset >> 32);
233	else if (req->type == REQ_WRITE)
234	req->result = pwrite(req->fd, req->dataptr, req->length, req->offset & 0xffffffff, req->offset >> 32);
235	else if (req->type == REQ_OPEN)
236	req->result = open (req->dataptr, req->fd, req->mode);
237	else if (req->type == REQ_CLOSE)
238	req->result = close (req->fd);
239	else if (req->type == REQ_STAT)
240	req->result = stat64 (req->dataptr, req->statdata);
241	else if (req->type == REQ_LSTAT)
242	req->result = lstat64 (req->dataptr, req->statdata);
243	else if (req->type == REQ_FSTAT)
244	req->result = fstat64 (req->fd, req->statdata);
245	else
246	{	323	{
		324	case REQ_READ: req->result = pread64 (req->fd, req->dataptr, req->length,
		325	LONG_LONG_PAIR (req->offset >> 32, req->offset & 0xffffffff)); break;
		326	case REQ_WRITE: req->result = pwrite64(req->fd, req->dataptr, req->length,
		327	LONG_LONG_PAIR (req->offset >> 32, req->offset & 0xffffffff)); break;
		328	#if __NR_stat64
		329	struct kernelstat64 statdata;
		330	case REQ_STAT: req->result = stat64 (req->dataptr, &statdata); COPY_STATDATA; break;
		331	case REQ_LSTAT: req->result = lstat64 (req->dataptr, &statdata); COPY_STATDATA; break;
		332	case REQ_FSTAT: req->result = fstat64 (req->fd, &statdata); COPY_STATDATA; break;
		333	#else
		334	struct kernelstat statdata;
		335	case REQ_STAT: req->result = stat (req->dataptr, &statdata); COPY_STATDATA; break;
		336	case REQ_LSTAT: req->result = lstat (req->dataptr, &statdata); COPY_STATDATA; break;
		337	case REQ_FSTAT: req->result = fstat (req->fd, &statdata); COPY_STATDATA; break;
		338	#endif
		339	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
		340	case REQ_CLOSE: req->result = close (req->fd); break;
		341	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
		342
		343	case REQ_QUIT:
		344	default:
247	write (respipe[1], (void *)&req, sizeof (req));	345	write (respipe[1], (void *)&req, sizeof (req));
248	break;	346	return 0;
249	}	347	}
250		348
251	req->errorno = errno;	349	req->errorno = errno;
252	write (respipe[1], (void *)&req, sizeof (req));	350	write (respipe[1], (void *)&req, sizeof (req));
253	}	351	}
…		…
265	sigdelset (&fullsigset, SIGABRT);	363	sigdelset (&fullsigset, SIGABRT);
266	sigdelset (&fullsigset, SIGINT);	364	sigdelset (&fullsigset, SIGINT);
267		365
268	if (pipe (reqpipe) \|\| pipe (respipe))	366	if (pipe (reqpipe) \|\| pipe (respipe))
269	croak ("unable to initialize request or result pipe");	367	croak ("unable to initialize request or result pipe");
		368
		369	if (fcntl (reqpipe[1], F_SETFL, O_NONBLOCK))
		370	croak ("cannot set result pipe to nonblocking mode");
270		371
271	if (fcntl (respipe[0], F_SETFL, O_NONBLOCK))	372	if (fcntl (respipe[0], F_SETFL, O_NONBLOCK))
272	croak ("cannot set result pipe to nonblocking mode");	373	croak ("cannot set result pipe to nonblocking mode");
273	}	374	}
274		375
…		…
292	cur--;	393	cur--;
293	}	394	}
294		395
295	while (started > nthreads)	396	while (started > nthreads)
296	{	397	{
297	fd_set rfd;	398	poll_wait ();
298	FD_ZERO(&rfd);
299	FD_SET(respipe[0], &rfd);
300
301	select (respipe[0] + 1, &rfd, 0, 0, 0);
302	poll_cb ();	399	poll_cb (aTHX);
303	}	400	}
304		401
305	void	402	void
306	aio_open(pathname,flags,mode,callback)	403	aio_open(pathname,flags,mode,callback)
307	SV * pathname	404	SV * pathname
…		…
382	Newz (0, req, 1, aio_cb);	479	Newz (0, req, 1, aio_cb);
383		480
384	if (!req)	481	if (!req)
385	croak ("out of memory during aio_req allocation");	482	croak ("out of memory during aio_req allocation");
386		483
387	New (0, req->statdata, 1, struct stat64);	484	New (0, req->statdata, 1, Stat_t);
388		485
389	if (!req->statdata)	486	if (!req->statdata)
390	croak ("out of memory during aio_req->statdata allocation");	487	croak ("out of memory during aio_req->statdata allocation");
391		488
392	if (SvPOK (fh_or_path))	489	if (SvPOK (fh_or_path))
…		…
403		500
404	req->callback = SvREFCNT_inc (callback);	501	req->callback = SvREFCNT_inc (callback);
405		502
406	send_req (req);	503	send_req (req);
407		504
		505	void
		506	aio_unlink(pathname,callback)
		507	SV * pathname
		508	SV * callback
		509	PROTOTYPE: $$
		510	CODE:
		511	aio_req req;
		512
		513	Newz (0, req, 1, aio_cb);
		514
		515	if (!req)
		516	croak ("out of memory during aio_req allocation");
		517
		518	req->type = REQ_UNLINK;
		519	req->data = newSVsv (pathname);
		520	req->dataptr = SvPV_nolen (req->data);
		521	req->callback = SvREFCNT_inc (callback);
		522
		523	send_req (req);
		524
408	int	525	int
409	poll_fileno()	526	poll_fileno()
410	PROTOTYPE:	527	PROTOTYPE:
411	CODE:	528	CODE:
412	RETVAL = respipe[0];	529	RETVAL = respipe[0];
…		…
419	CODE:	536	CODE:
420	RETVAL = poll_cb (aTHX);	537	RETVAL = poll_cb (aTHX);
421	OUTPUT:	538	OUTPUT:
422	RETVAL	539	RETVAL
423		540
		541	void
		542	poll_wait()
		543	PROTOTYPE:
		544	CODE:
		545	poll_wait ();
		546
424	int	547	int
425	nreqs()	548	nreqs()
426	PROTOTYPE:	549	PROTOTYPE:
427	CODE:	550	CODE:
428	RETVAL = nreqs;	551	RETVAL = nreqs;

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Comparing Linux-AIO/AIO.xs (file contents): Revision 1.15 by root, Sat May 18 21:48:36 2002 UTC vs. Revision 1.28 by root, Sat Jul 9 04:02:54 2005 UTC

Diff Legend

Comparing Linux-AIO/AIO.xs (file contents):
Revision 1.15 by root, Sat May 18 21:48:36 2002 UTC vs.
Revision 1.28 by root, Sat Jul 9 04:02:54 2005 UTC