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

Comparing Linux-AIO/AIO.xs (file contents):
Revision 1.16 by root, Wed May 5 10:13:30 2004 UTC vs.
Revision 1.26 by root, Thu Jul 7 23:17:23 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	#ifndef __NR_pread64	19	// 128 seems to be enough most everywhere. alpha needs 256.
17	# define __NR_pread64 __NR_pread	20	#define STACKSIZE (256 * sizeof (long))
18	#endif
19	#ifndef __NR_pwrite64
20	# define __NR_pwrite64 __NR_pwrite
21	#endif
22		21
23	#define STACKSIZE 1024 /* yeah */	22	enum {
24		23	REQ_QUIT,
25	enum { REQ_QUIT, REQ_OPEN, REQ_CLOSE, REQ_READ, REQ_WRITE, REQ_STAT, REQ_LSTAT, REQ_FSTAT};	24	REQ_OPEN, REQ_CLOSE, REQ_READ, REQ_WRITE,
		25	REQ_STAT, REQ_LSTAT, REQ_FSTAT, REQ_UNLINK
		26	};
26		27
27	typedef struct {	28	typedef struct {
28	char stack[STACKSIZE];	29	char stack[STACKSIZE];
29	} aio_thread;	30	} aio_thread;
30		31
31	typedef struct {	32	typedef struct aio_cb {
		33	struct aio_cb *next;
		34
32	int type;	35	int type;
33	aio_thread *thread;	36	aio_thread *thread;
34		37
35	int fd;	38	int fd;
36	off_t offset;	39	off_t offset;
40	int errorno;	43	int errorno;
41	SV data, callback;	44	SV data, callback;
42	void *dataptr;	45	void *dataptr;
43	STRLEN dataoffset;	46	STRLEN dataoffset;
44		47
45	struct stat64 *statdata;	48	Stat_t *statdata;
46	} aio_cb;	49	} aio_cb;
47		50
48	typedef aio_cb *aio_req;	51	typedef aio_cb *aio_req;
49		52
50	static int started;	53	static int started;
51	static int nreqs;	54	static int nreqs;
52	static int reqpipe[2], respipe[2];	55	static int reqpipe[2], respipe[2];
53		56
		57	static aio_req qs, qe; /* queue start, queue end */
		58
54	static int aio_proc(void *arg);	59	static int aio_proc(void *arg);
55		60
56	static void	61	static void
57	start_thread(void)	62	start_thread (void)
58	{	63	{
59	aio_thread *thr;	64	aio_thread *thr;
60		65
61	New (0, thr, 1, aio_thread);	66	New (0, thr, 1, aio_thread);
62		67
63	if (clone (aio_proc,	68	if (clone (aio_proc,
64	&(thr->stack[STACKSIZE]),	69	&(thr->stack[STACKSIZE - sizeof (long)]),
65	CLONE_VM\|CLONE_FS\|CLONE_FILES\|CLONE_SIGHAND,	70	CLONE_VM\|CLONE_FS\|CLONE_FILES,
66	thr) >= 0)	71	thr) >= 0)
67	started++;	72	started++;
68	else	73	else
69	Safefree (thr);	74	Safefree (thr);
70	}	75	}
71		76
72	static void	77	static void
		78	send_reqs (void)
		79	{
		80	/* this write is atomic */
		81	while (qs && write (reqpipe[1], &qs, sizeof qs) == sizeof qs)
		82	{
		83	qs = qs->next;
		84	if (!qs) qe = 0;
		85	}
		86	}
		87
		88	static void
		89	send_req (aio_req req)
		90	{
		91	nreqs++;
		92	req->next = 0;
		93
		94	if (qe)
		95	{
		96	qe->next = req;
		97	qe = req;
		98	}
		99	else
		100	qe = qs = req;
		101
		102	send_reqs ();
		103	}
		104
		105	static void
73	end_thread(void)	106	end_thread (void)
74	{	107	{
75	aio_req req;	108	aio_req req;
76	New (0, req, 1, aio_cb);	109	New (0, req, 1, aio_cb);
77	req->type = REQ_QUIT;	110	req->type = REQ_QUIT;
78	write (reqpipe[1], &req, sizeof (aio_req));	111
		112	send_req (req);
79	}	113	}
80		114
81	static void	115	static void
82	send_req (aio_req req)	116	read_write (pTHX_
83	{
84	nreqs++;
85	write (reqpipe[1], &req, sizeof (aio_req));
86	}
87
88	static void
89	read_write (pTHX_ int dowrite, int fd, off_t offset, size_t length,	117	int dowrite, int fd, off_t offset, size_t length,
90	SV data, STRLEN dataoffset, SVcallback)	118	SV data, STRLEN dataoffset, SV callback)
91	{	119	{
92	aio_req req;	120	aio_req req;
93	STRLEN svlen;	121	STRLEN svlen;
94	char *svptr = SvPV (data, svlen);	122	char *svptr = SvPV (data, svlen);
95		123
…		…
131	req->callback = SvREFCNT_inc (callback);	159	req->callback = SvREFCNT_inc (callback);
132		160
133	send_req (req);	161	send_req (req);
134	}	162	}
135		163
		164	static void
		165	poll_wait ()
		166	{
		167	fd_set rfd;
		168	FD_ZERO(&rfd);
		169	FD_SET(respipe[0], &rfd);
		170
		171	select (respipe[0] + 1, &rfd, 0, 0, 0);
		172	}
		173
136	static int	174	static int
137	poll_cb (pTHX)	175	poll_cb (pTHX)
138	{	176	{
139	dSP;	177	dSP;
140	int count = 0;	178	int count = 0;
141	aio_req req;	179	aio_req req;
142		180
143	while (read (respipe[0], (void *)&req, sizeof (req)) == sizeof (req))	181	while (read (respipe[0], (void *)&req, sizeof (req)) == sizeof (req))
144	{	182	{
		183	nreqs--;
		184
145	if (req->type == REQ_QUIT)	185	if (req->type == REQ_QUIT)
146	{	186	{
147	Safefree (req->thread);	187	Safefree (req->thread);
148	started--;	188	started--;
149	}	189	}
…		…
159	if (req->data)	199	if (req->data)
160	SvREFCNT_dec (req->data);	200	SvREFCNT_dec (req->data);
161		201
162	if (req->type == REQ_STAT \|\| req->type == REQ_LSTAT \|\| req->type == REQ_FSTAT)	202	if (req->type == REQ_STAT \|\| req->type == REQ_LSTAT \|\| req->type == REQ_FSTAT)
163	{	203	{
164	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	204	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
165	PL_laststatval = req->result;	205	PL_laststatval = req->result;
166	PL_statcache.st_dev = req->statdata->st_dev;	206	PL_statcache = *(req->statdata);
167	PL_statcache.st_ino = req->statdata->st_ino;
168	PL_statcache.st_mode = req->statdata->st_mode;
169	PL_statcache.st_nlink = req->statdata->st_nlink;
170	PL_statcache.st_uid = req->statdata->st_uid;
171	PL_statcache.st_gid = req->statdata->st_gid;
172	PL_statcache.st_rdev = req->statdata->st_rdev;
173	PL_statcache.st_size = req->statdata->st_size;
174	PL_statcache.st_atime = req->statdata->st_atime;
175	PL_statcache.st_mtime = req->statdata->st_mtime;
176	PL_statcache.st_ctime = req->statdata->st_ctime;
177	PL_statcache.st_blksize = req->statdata->st_blksize;
178	PL_statcache.st_blocks = req->statdata->st_blocks;
179		207
180	Safefree (req->statdata);	208	Safefree (req->statdata);
181	}	209	}
182		210
183	PUSHMARK (SP);	211	PUSHMARK (SP);
…		…
188		216
189	if (req->callback)	217	if (req->callback)
190	SvREFCNT_dec (req->callback);	218	SvREFCNT_dec (req->callback);
191		219
192	errno = errorno;	220	errno = errorno;
193	nreqs--;
194	count++;	221	count++;
195	}	222	}
196		223
197	Safefree (req);	224	Safefree (req);
198	}	225	}
199		226
		227	if (qs)
		228	send_reqs ();
		229
200	return count;	230	return count;
201	}	231	}
202		232
203	static sigset_t fullsigset;	233	static sigset_t fullsigset;
204		234
205	#undef errno	235	#undef errno
206	#include <asm/unistd.h>	236	#include <asm/unistd.h>
		237	#include <sys/prctl.h>
		238
		239	#if BYTE_ORDER == LITTLE_ENDIAN
		240	# define LONG_LONG_PAIR(HI, LO) LO, HI
		241	#elif BYTE_ORDER == BIG_ENDIAN
		242	# define LONG_LONG_PAIR(HI, LO) HI, LO
		243	#endif
		244
		245	#if __alpha \|\| __ia64 \|\| __hppa \|\| __v850__
		246	# define stat kernelstat
		247	# define stat64 kernelstat64
		248	# include <asm/stat.h>
		249	# undef stat
		250	# undef stat64
		251	#else
		252	# define kernelstat stat
		253	# define kernelstat64 stat64
		254	#endif
		255
		256	#define COPY_STATDATA \
		257	req->statdata->st_dev = statdata.st_dev; \
		258	req->statdata->st_ino = statdata.st_ino; \
		259	req->statdata->st_mode = statdata.st_mode; \
		260	req->statdata->st_nlink = statdata.st_nlink; \
		261	req->statdata->st_uid = statdata.st_uid; \
		262	req->statdata->st_gid = statdata.st_gid; \
		263	req->statdata->st_rdev = statdata.st_rdev; \
		264	req->statdata->st_size = statdata.st_size; \
		265	req->statdata->st_atime = statdata.st_atime; \
		266	req->statdata->st_mtime = statdata.st_mtime; \
		267	req->statdata->st_ctime = statdata.st_ctime; \
		268	req->statdata->st_blksize = statdata.st_blksize; \
		269	req->statdata->st_blocks = statdata.st_blocks; \
207		270
208	static int	271	static int
209	aio_proc(void *thr_arg)	272	aio_proc (void *thr_arg)
210	{	273	{
211	aio_thread *thr = thr_arg;	274	aio_thread *thr = thr_arg;
212	aio_req req;	275	aio_req req;
213	int errno;	276	int errno;
214		277
215	/* this is very much x86 and kernel-specific :(:(:( */	278	/* this is very much kernel-specific :(:(:( */
216	/* we rely on gcc's ability to create closures. */	279	/* we rely on gcc's ability to create closures. */
217	_syscall3(int,read,int,fd,char *,buf,size_t,count)	280	_syscall3(int,read,int,fd,char *,buf,size_t,count)
218	_syscall3(int,write,int,fd,char *,buf,size_t,count)	281	_syscall3(int,write,int,fd,char *,buf,size_t,count)
219		282
220	_syscall3(int,open,char *,pathname,int,flags,mode_t,mode)	283	_syscall3(int,open,char *,pathname,int,flags,mode_t,mode)
221	_syscall1(int,close,int,fd)	284	_syscall1(int,close,int,fd)
222		285
		286	#if __NR_pread64
223	_syscall5(int,pread64,int,fd,char *,buf,size_t,count,unsigned int,offset_lo,unsigned int,offset_hi)	287	_syscall5(int,pread64,int,fd,char *,buf,size_t,count,unsigned int,offset_lh,unsigned int,offset_hl)
224	_syscall5(int,pwrite64,int,fd,char *,buf,size_t,count,unsigned int,offset_lo,unsigned int,offset_hi)	288	_syscall5(int,pwrite64,int,fd,char *,buf,size_t,count,unsigned int,offset_lh,unsigned int,offset_hl)
		289	#elif __NR_pread
		290	_syscall4(int,pread,int,fd,char *,buf,size_t,count,offset_t,offset)
		291	_syscall4(int,pwrite,int,fd,char *,buf,size_t,count,offset_t,offset)
		292	#else
		293	# error "neither pread nor pread64 defined"
		294	#endif
225		295
		296
		297	#if __NR_stat64
226	_syscall2(int,stat64, const char , filename, struct stat64 , buf)	298	_syscall2(int,stat64, const char , filename, struct kernelstat64 , buf)
227	_syscall2(int,lstat64, const char , filename, struct stat64 , buf)	299	_syscall2(int,lstat64, const char , filename, struct kernelstat64 , buf)
228	_syscall2(int,fstat64, int, fd, struct stat64 *, buf)	300	_syscall2(int,fstat64, int, fd, struct kernelstat64 *, buf)
		301	#elif __NR_stat
		302	_syscall2(int,stat, const char , filename, struct kernelstat , buf)
		303	_syscall2(int,lstat, const char , filename, struct kernelstat , buf)
		304	_syscall2(int,fstat, int, fd, struct kernelstat *, buf)
		305	#else
		306	# error "neither stat64 nor stat defined"
		307	#endif
		308
		309	_syscall1(int,unlink, char *, filename);
229		310
230	sigprocmask (SIG_SETMASK, &fullsigset, 0);	311	sigprocmask (SIG_SETMASK, &fullsigset, 0);
		312	prctl (PR_SET_PDEATHSIG, SIGKILL);
231		313
232	/* then loop */	314	/* then loop */
233	while (read (reqpipe[0], (void *)&req, sizeof (req)) == sizeof (req))	315	while (read (reqpipe[0], (void *)&req, sizeof (req)) == sizeof (req))
234	{	316	{
235	req->thread = thr;	317	req->thread = thr;
236	errno = 0; /* strictly unnecessary */	318	errno = 0; /* strictly unnecessary */
237		319
238	if (req->type == REQ_READ)	320	switch (req->type)
239	req->result = pread64 (req->fd, req->dataptr, req->length, req->offset & 0xffffffff, req->offset >> 32);
240	else if (req->type == REQ_WRITE)
241	req->result = pwrite64(req->fd, req->dataptr, req->length, req->offset & 0xffffffff, req->offset >> 32);
242	else if (req->type == REQ_OPEN)
243	req->result = open (req->dataptr, req->fd, req->mode);
244	else if (req->type == REQ_CLOSE)
245	req->result = close (req->fd);
246	else if (req->type == REQ_STAT)
247	req->result = stat64 (req->dataptr, req->statdata);
248	else if (req->type == REQ_LSTAT)
249	req->result = lstat64 (req->dataptr, req->statdata);
250	else if (req->type == REQ_FSTAT)
251	req->result = fstat64 (req->fd, req->statdata);
252	else
253	{	321	{
		322	#if __NR_pread64
		323	case REQ_READ: req->result = pread64 (req->fd, req->dataptr, req->length,
		324	LONG_LONG_PAIR (req->offset >> 32, req->offset & 0xffffffff)); break;
		325	case REQ_WRITE: req->result = pwrite64(req->fd, req->dataptr, req->length,
		326	LONG_LONG_PAIR (req->offset >> 32, req->offset & 0xffffffff)); break;
		327	#else
		328	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
		329	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
		330	#endif
		331	#if __NR_stat64
		332	struct kernelstat64 statdata;
		333	case REQ_STAT: req->result = stat64 (req->dataptr, &statdata); COPY_STATDATA; break;
		334	case REQ_LSTAT: req->result = lstat64 (req->dataptr, &statdata); COPY_STATDATA; break;
		335	case REQ_FSTAT: req->result = fstat64 (req->fd, &statdata); COPY_STATDATA; break;
		336	#else
		337	struct kernelstat statdata;
		338	case REQ_STAT: req->result = stat (req->dataptr, &statdata); COPY_STATDATA; break;
		339	case REQ_LSTAT: req->result = lstat (req->dataptr, &statdata); COPY_STATDATA; break;
		340	case REQ_FSTAT: req->result = fstat (req->fd, &statdata); COPY_STATDATA; break;
		341	#endif
		342	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
		343	case REQ_CLOSE: req->result = close (req->fd); break;
		344	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
		345
		346	case REQ_QUIT:
		347	default:
254	write (respipe[1], (void *)&req, sizeof (req));	348	write (respipe[1], (void *)&req, sizeof (req));
255	break;	349	return 0;
256	}	350	}
257		351
258	req->errorno = errno;	352	req->errorno = errno;
259	write (respipe[1], (void *)&req, sizeof (req));	353	write (respipe[1], (void *)&req, sizeof (req));
260	}	354	}
…		…
272	sigdelset (&fullsigset, SIGABRT);	366	sigdelset (&fullsigset, SIGABRT);
273	sigdelset (&fullsigset, SIGINT);	367	sigdelset (&fullsigset, SIGINT);
274		368
275	if (pipe (reqpipe) \|\| pipe (respipe))	369	if (pipe (reqpipe) \|\| pipe (respipe))
276	croak ("unable to initialize request or result pipe");	370	croak ("unable to initialize request or result pipe");
		371
		372	if (fcntl (reqpipe[1], F_SETFL, O_NONBLOCK))
		373	croak ("cannot set result pipe to nonblocking mode");
277		374
278	if (fcntl (respipe[0], F_SETFL, O_NONBLOCK))	375	if (fcntl (respipe[0], F_SETFL, O_NONBLOCK))
279	croak ("cannot set result pipe to nonblocking mode");	376	croak ("cannot set result pipe to nonblocking mode");
280	}	377	}
281		378
…		…
299	cur--;	396	cur--;
300	}	397	}
301		398
302	while (started > nthreads)	399	while (started > nthreads)
303	{	400	{
304	fd_set rfd;	401	poll_wait ();
305	FD_ZERO(&rfd);
306	FD_SET(respipe[0], &rfd);
307
308	select (respipe[0] + 1, &rfd, 0, 0, 0);
309	poll_cb ();	402	poll_cb (aTHX);
310	}	403	}
311		404
312	void	405	void
313	aio_open(pathname,flags,mode,callback)	406	aio_open(pathname,flags,mode,callback)
314	SV * pathname	407	SV * pathname
…		…
389	Newz (0, req, 1, aio_cb);	482	Newz (0, req, 1, aio_cb);
390		483
391	if (!req)	484	if (!req)
392	croak ("out of memory during aio_req allocation");	485	croak ("out of memory during aio_req allocation");
393		486
394	New (0, req->statdata, 1, struct stat64);	487	New (0, req->statdata, 1, Stat_t);
395		488
396	if (!req->statdata)	489	if (!req->statdata)
397	croak ("out of memory during aio_req->statdata allocation");	490	croak ("out of memory during aio_req->statdata allocation");
398		491
399	if (SvPOK (fh_or_path))	492	if (SvPOK (fh_or_path))
…		…
410		503
411	req->callback = SvREFCNT_inc (callback);	504	req->callback = SvREFCNT_inc (callback);
412		505
413	send_req (req);	506	send_req (req);
414		507
		508	void
		509	aio_unlink(pathname,callback)
		510	SV * pathname
		511	SV * callback
		512	PROTOTYPE: $$
		513	CODE:
		514	aio_req req;
		515
		516	Newz (0, req, 1, aio_cb);
		517
		518	if (!req)
		519	croak ("out of memory during aio_req allocation");
		520
		521	req->type = REQ_UNLINK;
		522	req->data = newSVsv (pathname);
		523	req->dataptr = SvPV_nolen (req->data);
		524	req->callback = SvREFCNT_inc (callback);
		525
		526	send_req (req);
		527
415	int	528	int
416	poll_fileno()	529	poll_fileno()
417	PROTOTYPE:	530	PROTOTYPE:
418	CODE:	531	CODE:
419	RETVAL = respipe[0];	532	RETVAL = respipe[0];
…		…
426	CODE:	539	CODE:
427	RETVAL = poll_cb (aTHX);	540	RETVAL = poll_cb (aTHX);
428	OUTPUT:	541	OUTPUT:
429	RETVAL	542	RETVAL
430		543
		544	void
		545	poll_wait()
		546	PROTOTYPE:
		547	CODE:
		548	poll_wait ();
		549
431	int	550	int
432	nreqs()	551	nreqs()
433	PROTOTYPE:	552	PROTOTYPE:
434	CODE:	553	CODE:
435	RETVAL = nreqs;	554	RETVAL = nreqs;

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Comparing Linux-AIO/AIO.xs (file contents): Revision 1.16 by root, Wed May 5 10:13:30 2004 UTC vs. Revision 1.26 by root, Thu Jul 7 23:17:23 2005 UTC

Diff Legend

Comparing Linux-AIO/AIO.xs (file contents):
Revision 1.16 by root, Wed May 5 10:13:30 2004 UTC vs.
Revision 1.26 by root, Thu Jul 7 23:17:23 2005 UTC