[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 1.27 by root, Fri Jul 8 03:10:00 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	#if __i386 \|\| __amd64
17	# define __NR_pread64 __NR_pread	20	# define STACKSIZE ( 256 * sizeof (long))
		21	#elif __ia64
		22	# define STACKSIZE (8192 * sizeof (long))
		23	#else
		24	# define STACKSIZE ( 512 * sizeof (long))
18	#endif	25	#endif
19	#ifndef __NR_pwrite64
20	# define __NR_pwrite64 __NR_pwrite
21	#endif
22		26
23	#define STACKSIZE 1024 /* yeah */	27	enum {
24		28	REQ_QUIT,
25	enum { REQ_QUIT, REQ_OPEN, REQ_CLOSE, REQ_READ, REQ_WRITE, REQ_STAT, REQ_LSTAT, REQ_FSTAT};	29	REQ_OPEN, REQ_CLOSE, REQ_READ, REQ_WRITE,
		30	REQ_STAT, REQ_LSTAT, REQ_FSTAT, REQ_UNLINK
		31	};
26		32
27	typedef struct {	33	typedef struct {
28	char stack[STACKSIZE];	34	char stack[STACKSIZE];
29	} aio_thread;	35	} aio_thread;
30		36
31	typedef struct {	37	typedef struct aio_cb {
		38	struct aio_cb *next;
		39
32	int type;	40	int type;
33	aio_thread *thread;	41	aio_thread *thread;
34		42
35	int fd;	43	int fd;
36	off_t offset;	44	off_t offset;
40	int errorno;	48	int errorno;
41	SV data, callback;	49	SV data, callback;
42	void *dataptr;	50	void *dataptr;
43	STRLEN dataoffset;	51	STRLEN dataoffset;
44		52
45	struct stat64 *statdata;	53	Stat_t *statdata;
46	} aio_cb;	54	} aio_cb;
47		55
48	typedef aio_cb *aio_req;	56	typedef aio_cb *aio_req;
49		57
50	static int started;	58	static int started;
51	static int nreqs;	59	static int nreqs;
52	static int reqpipe[2], respipe[2];	60	static int reqpipe[2], respipe[2];
53		61
		62	static aio_req qs, qe; /* queue start, queue end */
		63
54	static int aio_proc(void *arg);	64	static int aio_proc(void *arg);
55		65
56	static void	66	static void
57	start_thread(void)	67	start_thread (void)
58	{	68	{
59	aio_thread *thr;	69	aio_thread *thr;
60		70
61	New (0, thr, 1, aio_thread);	71	New (0, thr, 1, aio_thread);
62		72
63	if (clone (aio_proc,	73	if (clone (aio_proc,
64	&(thr->stack[STACKSIZE]),	74	&(thr->stack[STACKSIZE - 16]),
65	CLONE_VM\|CLONE_FS\|CLONE_FILES\|CLONE_SIGHAND,	75	CLONE_VM\|CLONE_FS\|CLONE_FILES,
66	thr) >= 0)	76	thr) >= 0)
67	started++;	77	started++;
68	else	78	else
69	Safefree (thr);	79	Safefree (thr);
70	}	80	}
71		81
72	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
73	end_thread(void)	111	end_thread (void)
74	{	112	{
75	aio_req req;	113	aio_req req;
76	New (0, req, 1, aio_cb);	114	New (0, req, 1, aio_cb);
77	req->type = REQ_QUIT;	115	req->type = REQ_QUIT;
78	write (reqpipe[1], &req, sizeof (aio_req));	116
		117	send_req (req);
79	}	118	}
80		119
81	static void	120	static void
82	send_req (aio_req req)	121	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,	122	int dowrite, int fd, off_t offset, size_t length,
90	SV data, STRLEN dataoffset, SVcallback)	123	SV data, STRLEN dataoffset, SV callback)
91	{	124	{
92	aio_req req;	125	aio_req req;
93	STRLEN svlen;	126	STRLEN svlen;
94	char *svptr = SvPV (data, svlen);	127	char *svptr = SvPV (data, svlen);
95		128
…		…
131	req->callback = SvREFCNT_inc (callback);	164	req->callback = SvREFCNT_inc (callback);
132		165
133	send_req (req);	166	send_req (req);
134	}	167	}
135		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
136	static int	179	static int
137	poll_cb (pTHX)	180	poll_cb (pTHX)
138	{	181	{
139	dSP;	182	dSP;
140	int count = 0;	183	int count = 0;
141	aio_req req;	184	aio_req req;
142		185
143	while (read (respipe[0], (void *)&req, sizeof (req)) == sizeof (req))	186	while (read (respipe[0], (void *)&req, sizeof (req)) == sizeof (req))
144	{	187	{
		188	nreqs--;
		189
145	if (req->type == REQ_QUIT)	190	if (req->type == REQ_QUIT)
146	{	191	{
147	Safefree (req->thread);	192	Safefree (req->thread);
148	started--;	193	started--;
149	}	194	}
…		…
159	if (req->data)	204	if (req->data)
160	SvREFCNT_dec (req->data);	205	SvREFCNT_dec (req->data);
161		206
162	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)
163	{	208	{
164	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	209	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
165	PL_laststatval = req->result;	210	PL_laststatval = req->result;
166	PL_statcache.st_dev = req->statdata->st_dev;	211	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		212
180	Safefree (req->statdata);	213	Safefree (req->statdata);
181	}	214	}
182		215
183	PUSHMARK (SP);	216	PUSHMARK (SP);
…		…
188		221
189	if (req->callback)	222	if (req->callback)
190	SvREFCNT_dec (req->callback);	223	SvREFCNT_dec (req->callback);
191		224
192	errno = errorno;	225	errno = errorno;
193	nreqs--;
194	count++;	226	count++;
195	}	227	}
196		228
197	Safefree (req);	229	Safefree (req);
198	}	230	}
199		231
		232	if (qs)
		233	send_reqs ();
		234
200	return count;	235	return count;
201	}	236	}
202		237
203	static sigset_t fullsigset;	238	static sigset_t fullsigset;
204		239
205	#undef errno	240	#undef errno
206	#include <asm/unistd.h>	241	#include <asm/unistd.h>
		242	#include <sys/prctl.h>
		243
		244	#if BYTE_ORDER == LITTLE_ENDIAN
		245	# define LONG_LONG_PAIR(HI, LO) LO, HI
		246	#elif BYTE_ORDER == BIG_ENDIAN
		247	# define LONG_LONG_PAIR(HI, LO) HI, LO
		248	#endif
		249
		250	#if __alpha \|\| __ia64 \|\| __hppa \|\| __v850__
		251	# define stat kernelstat
		252	# define stat64 kernelstat64
		253	# include <asm/stat.h>
		254	# undef stat
		255	# undef stat64
		256	#else
		257	# define kernelstat stat
		258	# define kernelstat64 stat64
		259	#endif
		260
		261	#define COPY_STATDATA \
		262	req->statdata->st_dev = statdata.st_dev; \
		263	req->statdata->st_ino = statdata.st_ino; \
		264	req->statdata->st_mode = statdata.st_mode; \
		265	req->statdata->st_nlink = statdata.st_nlink; \
		266	req->statdata->st_uid = statdata.st_uid; \
		267	req->statdata->st_gid = statdata.st_gid; \
		268	req->statdata->st_rdev = statdata.st_rdev; \
		269	req->statdata->st_size = statdata.st_size; \
		270	req->statdata->st_atime = statdata.st_atime; \
		271	req->statdata->st_mtime = statdata.st_mtime; \
		272	req->statdata->st_ctime = statdata.st_ctime; \
		273	req->statdata->st_blksize = statdata.st_blksize; \
		274	req->statdata->st_blocks = statdata.st_blocks; \
207		275
208	static int	276	static int
209	aio_proc(void *thr_arg)	277	aio_proc (void *thr_arg)
210	{	278	{
211	aio_thread *thr = thr_arg;	279	aio_thread *thr = thr_arg;
212	aio_req req;	280	aio_req req;
213	int errno;	281	int errno;
214		282
215	/* this is very much x86 and kernel-specific :(:(:( */	283	/* this is very much kernel-specific :(:(:( */
216	/* we rely on gcc's ability to create closures. */	284	/* we rely on gcc's ability to create closures. */
217	_syscall3(int,read,int,fd,char *,buf,size_t,count)	285	_syscall3(int,read,int,fd,char *,buf,size_t,count)
218	_syscall3(int,write,int,fd,char *,buf,size_t,count)	286	_syscall3(int,write,int,fd,char *,buf,size_t,count)
219		287
220	_syscall3(int,open,char *,pathname,int,flags,mode_t,mode)	288	_syscall3(int,open,char *,pathname,int,flags,mode_t,mode)
221	_syscall1(int,close,int,fd)	289	_syscall1(int,close,int,fd)
222		290
		291	#if __NR_pread64
223	_syscall5(int,pread64,int,fd,char *,buf,size_t,count,unsigned int,offset_lo,unsigned int,offset_hi)	292	_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)	293	_syscall5(int,pwrite64,int,fd,char *,buf,size_t,count,unsigned int,offset_lh,unsigned int,offset_hl)
		294	#elif __NR_pread
		295	_syscall4(int,pread,int,fd,char *,buf,size_t,count,offset_t,offset)
		296	_syscall4(int,pwrite,int,fd,char *,buf,size_t,count,offset_t,offset)
		297	#else
		298	# error "neither pread nor pread64 defined"
		299	#endif
225		300
		301
		302	#if __NR_stat64
226	_syscall2(int,stat64, const char , filename, struct stat64 , buf)	303	_syscall2(int,stat64, const char , filename, struct kernelstat64 , buf)
227	_syscall2(int,lstat64, const char , filename, struct stat64 , buf)	304	_syscall2(int,lstat64, const char , filename, struct kernelstat64 , buf)
228	_syscall2(int,fstat64, int, fd, struct stat64 *, buf)	305	_syscall2(int,fstat64, int, fd, struct kernelstat64 *, buf)
		306	#elif __NR_stat
		307	_syscall2(int,stat, const char , filename, struct kernelstat , buf)
		308	_syscall2(int,lstat, const char , filename, struct kernelstat , buf)
		309	_syscall2(int,fstat, int, fd, struct kernelstat *, buf)
		310	#else
		311	# error "neither stat64 nor stat defined"
		312	#endif
		313
		314	_syscall1(int,unlink, char *, filename);
229		315
230	sigprocmask (SIG_SETMASK, &fullsigset, 0);	316	sigprocmask (SIG_SETMASK, &fullsigset, 0);
		317	prctl (PR_SET_PDEATHSIG, SIGKILL);
231		318
232	/* then loop */	319	/* then loop */
233	while (read (reqpipe[0], (void *)&req, sizeof (req)) == sizeof (req))	320	while (read (reqpipe[0], (void *)&req, sizeof (req)) == sizeof (req))
234	{	321	{
235	req->thread = thr;	322	req->thread = thr;
236	errno = 0; /* strictly unnecessary */	323	errno = 0; /* strictly unnecessary */
237		324
238	if (req->type == REQ_READ)	325	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	{	326	{
		327	#if __NR_pread64
		328	case REQ_READ: req->result = pread64 (req->fd, req->dataptr, req->length,
		329	LONG_LONG_PAIR (req->offset >> 32, req->offset & 0xffffffff)); break;
		330	case REQ_WRITE: req->result = pwrite64(req->fd, req->dataptr, req->length,
		331	LONG_LONG_PAIR (req->offset >> 32, req->offset & 0xffffffff)); break;
		332	#else
		333	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
		334	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
		335	#endif
		336	#if __NR_stat64
		337	struct kernelstat64 statdata;
		338	case REQ_STAT: req->result = stat64 (req->dataptr, &statdata); COPY_STATDATA; break;
		339	case REQ_LSTAT: req->result = lstat64 (req->dataptr, &statdata); COPY_STATDATA; break;
		340	case REQ_FSTAT: req->result = fstat64 (req->fd, &statdata); COPY_STATDATA; break;
		341	#else
		342	struct kernelstat statdata;
		343	case REQ_STAT: req->result = stat (req->dataptr, &statdata); COPY_STATDATA; break;
		344	case REQ_LSTAT: req->result = lstat (req->dataptr, &statdata); COPY_STATDATA; break;
		345	case REQ_FSTAT: req->result = fstat (req->fd, &statdata); COPY_STATDATA; break;
		346	#endif
		347	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
		348	case REQ_CLOSE: req->result = close (req->fd); break;
		349	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
		350
		351	case REQ_QUIT:
		352	default:
254	write (respipe[1], (void *)&req, sizeof (req));	353	write (respipe[1], (void *)&req, sizeof (req));
255	break;	354	return 0;
256	}	355	}
257		356
258	req->errorno = errno;	357	req->errorno = errno;
259	write (respipe[1], (void *)&req, sizeof (req));	358	write (respipe[1], (void *)&req, sizeof (req));
260	}	359	}
…		…
272	sigdelset (&fullsigset, SIGABRT);	371	sigdelset (&fullsigset, SIGABRT);
273	sigdelset (&fullsigset, SIGINT);	372	sigdelset (&fullsigset, SIGINT);
274		373
275	if (pipe (reqpipe) \|\| pipe (respipe))	374	if (pipe (reqpipe) \|\| pipe (respipe))
276	croak ("unable to initialize request or result pipe");	375	croak ("unable to initialize request or result pipe");
		376
		377	if (fcntl (reqpipe[1], F_SETFL, O_NONBLOCK))
		378	croak ("cannot set result pipe to nonblocking mode");
277		379
278	if (fcntl (respipe[0], F_SETFL, O_NONBLOCK))	380	if (fcntl (respipe[0], F_SETFL, O_NONBLOCK))
279	croak ("cannot set result pipe to nonblocking mode");	381	croak ("cannot set result pipe to nonblocking mode");
280	}	382	}
281		383
…		…
299	cur--;	401	cur--;
300	}	402	}
301		403
302	while (started > nthreads)	404	while (started > nthreads)
303	{	405	{
304	fd_set rfd;	406	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 ();	407	poll_cb (aTHX);
310	}	408	}
311		409
312	void	410	void
313	aio_open(pathname,flags,mode,callback)	411	aio_open(pathname,flags,mode,callback)
314	SV * pathname	412	SV * pathname
…		…
389	Newz (0, req, 1, aio_cb);	487	Newz (0, req, 1, aio_cb);
390		488
391	if (!req)	489	if (!req)
392	croak ("out of memory during aio_req allocation");	490	croak ("out of memory during aio_req allocation");
393		491
394	New (0, req->statdata, 1, struct stat64);	492	New (0, req->statdata, 1, Stat_t);
395		493
396	if (!req->statdata)	494	if (!req->statdata)
397	croak ("out of memory during aio_req->statdata allocation");	495	croak ("out of memory during aio_req->statdata allocation");
398		496
399	if (SvPOK (fh_or_path))	497	if (SvPOK (fh_or_path))
…		…
410		508
411	req->callback = SvREFCNT_inc (callback);	509	req->callback = SvREFCNT_inc (callback);
412		510
413	send_req (req);	511	send_req (req);
414		512
		513	void
		514	aio_unlink(pathname,callback)
		515	SV * pathname
		516	SV * callback
		517	PROTOTYPE: $$
		518	CODE:
		519	aio_req req;
		520
		521	Newz (0, req, 1, aio_cb);
		522
		523	if (!req)
		524	croak ("out of memory during aio_req allocation");
		525
		526	req->type = REQ_UNLINK;
		527	req->data = newSVsv (pathname);
		528	req->dataptr = SvPV_nolen (req->data);
		529	req->callback = SvREFCNT_inc (callback);
		530
		531	send_req (req);
		532
415	int	533	int
416	poll_fileno()	534	poll_fileno()
417	PROTOTYPE:	535	PROTOTYPE:
418	CODE:	536	CODE:
419	RETVAL = respipe[0];	537	RETVAL = respipe[0];
…		…
426	CODE:	544	CODE:
427	RETVAL = poll_cb (aTHX);	545	RETVAL = poll_cb (aTHX);
428	OUTPUT:	546	OUTPUT:
429	RETVAL	547	RETVAL
430		548
		549	void
		550	poll_wait()
		551	PROTOTYPE:
		552	CODE:
		553	poll_wait ();
		554
431	int	555	int
432	nreqs()	556	nreqs()
433	PROTOTYPE:	557	PROTOTYPE:
434	CODE:	558	CODE:
435	RETVAL = nreqs;	559	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 1.27 by root, Fri Jul 8 03:10:00 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 1.27 by root, Fri Jul 8 03:10:00 2005 UTC