[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 1.24 by root, Sat Jul 2 13:16:33 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>
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>
11		13
12	typedef void InputStream; / hack, but 5.6.1 is simply toooo old ;) */	14	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 ;) */	15	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 ;) */	16	typedef void InOutStream; / hack, but 5.6.1 is simply toooo old ;) */
15		17
16	#ifndef __NR_pread64	18	#define STACKSIZE (128 * sizeof (long)) /* yeah */
17	# define __NR_pread64 __NR_pread
18	#endif
19	#ifndef __NR_pwrite64
20	# define __NR_pwrite64 __NR_pwrite
21	#endif
22		19
23	#define STACKSIZE 1024 /* yeah */	20	enum {
24		21	REQ_QUIT,
25	enum { REQ_QUIT, REQ_OPEN, REQ_CLOSE, REQ_READ, REQ_WRITE, REQ_STAT, REQ_LSTAT, REQ_FSTAT};	22	REQ_OPEN, REQ_CLOSE, REQ_READ, REQ_WRITE,
		23	REQ_STAT, REQ_LSTAT, REQ_FSTAT, REQ_UNLINK
		24	};
26		25
27	typedef struct {	26	typedef struct {
28	char stack[STACKSIZE];	27	char stack[STACKSIZE];
29	} aio_thread;	28	} aio_thread;
30		29
31	typedef struct {	30	typedef struct aio_cb {
		31	struct aio_cb *next;
		32
32	int type;	33	int type;
33	aio_thread *thread;	34	aio_thread *thread;
34		35
35	int fd;	36	int fd;
36	off_t offset;	37	off_t offset;
…		…
40	int errorno;	41	int errorno;
41	SV data, callback;	42	SV data, callback;
42	void *dataptr;	43	void *dataptr;
43	STRLEN dataoffset;	44	STRLEN dataoffset;
44		45
45	struct stat64 *statdata;	46	Stat_t *statdata;
46	} aio_cb;	47	} aio_cb;
47		48
48	typedef aio_cb *aio_req;	49	typedef aio_cb *aio_req;
49		50
50	static int started;	51	static int started;
51	static int nreqs;	52	static int nreqs;
52	static int reqpipe[2], respipe[2];	53	static int reqpipe[2], respipe[2];
53		54
		55	static aio_req qs, qe; /* queue start, queue end */
		56
54	static int aio_proc(void *arg);	57	static int aio_proc(void *arg);
55		58
56	static void	59	static void
57	start_thread(void)	60	start_thread (void)
58	{	61	{
59	aio_thread *thr;	62	aio_thread *thr;
60		63
61	New (0, thr, 1, aio_thread);	64	New (0, thr, 1, aio_thread);
62		65
63	if (clone (aio_proc,	66	if (clone (aio_proc,
64	&(thr->stack[STACKSIZE]),	67	&(thr->stack[STACKSIZE - sizeof (long)]),
65	CLONE_VM\|CLONE_FS\|CLONE_FILES\|CLONE_SIGHAND,	68	CLONE_VM\|CLONE_FS\|CLONE_FILES,
66	thr) >= 0)	69	thr) >= 0)
67	started++;	70	started++;
68	else	71	else
69	Safefree (thr);	72	Safefree (thr);
70	}	73	}
71		74
72	static void	75	static void
		76	send_reqs (void)
		77	{
		78	/* this write is atomic */
		79	while (qs && write (reqpipe[1], &qs, sizeof qs) == sizeof qs)
		80	{
		81	qs = qs->next;
		82	if (!qs) qe = 0;
		83	}
		84	}
		85
		86	static void
		87	send_req (aio_req req)
		88	{
		89	nreqs++;
		90	req->next = 0;
		91
		92	if (qe)
		93	{
		94	qe->next = req;
		95	qe = req;
		96	}
		97	else
		98	qe = qs = req;
		99
		100	send_reqs ();
		101	}
		102
		103	static void
73	end_thread(void)	104	end_thread (void)
74	{	105	{
75	aio_req req;	106	aio_req req;
76	New (0, req, 1, aio_cb);	107	New (0, req, 1, aio_cb);
77	req->type = REQ_QUIT;	108	req->type = REQ_QUIT;
78	write (reqpipe[1], &req, sizeof (aio_req));	109
		110	send_req (req);
79	}	111	}
80		112
81	static void	113	static void
82	send_req (aio_req req)	114	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,	115	int dowrite, int fd, off_t offset, size_t length,
90	SV data, STRLEN dataoffset, SVcallback)	116	SV data, STRLEN dataoffset, SV callback)
91	{	117	{
92	aio_req req;	118	aio_req req;
93	STRLEN svlen;	119	STRLEN svlen;
94	char *svptr = SvPV (data, svlen);	120	char *svptr = SvPV (data, svlen);
95		121
…		…
131	req->callback = SvREFCNT_inc (callback);	157	req->callback = SvREFCNT_inc (callback);
132		158
133	send_req (req);	159	send_req (req);
134	}	160	}
135		161
		162	static void
		163	poll_wait ()
		164	{
		165	fd_set rfd;
		166	FD_ZERO(&rfd);
		167	FD_SET(respipe[0], &rfd);
		168
		169	select (respipe[0] + 1, &rfd, 0, 0, 0);
		170	}
		171
136	static int	172	static int
137	poll_cb (pTHX)	173	poll_cb (pTHX)
138	{	174	{
139	dSP;	175	dSP;
140	int count = 0;	176	int count = 0;
141	aio_req req;	177	aio_req req;
142		178
143	while (read (respipe[0], (void *)&req, sizeof (req)) == sizeof (req))	179	while (read (respipe[0], (void *)&req, sizeof (req)) == sizeof (req))
144	{	180	{
		181	nreqs--;
		182
145	if (req->type == REQ_QUIT)	183	if (req->type == REQ_QUIT)
146	{	184	{
147	Safefree (req->thread);	185	Safefree (req->thread);
148	started--;	186	started--;
149	}	187	}
…		…
159	if (req->data)	197	if (req->data)
160	SvREFCNT_dec (req->data);	198	SvREFCNT_dec (req->data);
161		199
162	if (req->type == REQ_STAT \|\| req->type == REQ_LSTAT \|\| req->type == REQ_FSTAT)	200	if (req->type == REQ_STAT \|\| req->type == REQ_LSTAT \|\| req->type == REQ_FSTAT)
163	{	201	{
164	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	202	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
165	PL_laststatval = req->result;	203	PL_laststatval = req->result;
166	PL_statcache.st_dev = req->statdata->st_dev;	204	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		205
180	Safefree (req->statdata);	206	Safefree (req->statdata);
181	}	207	}
182		208
183	PUSHMARK (SP);	209	PUSHMARK (SP);
…		…
188		214
189	if (req->callback)	215	if (req->callback)
190	SvREFCNT_dec (req->callback);	216	SvREFCNT_dec (req->callback);
191		217
192	errno = errorno;	218	errno = errorno;
193	nreqs--;
194	count++;	219	count++;
195	}	220	}
196		221
197	Safefree (req);	222	Safefree (req);
198	}	223	}
199		224
		225	if (qs)
		226	send_reqs ();
		227
200	return count;	228	return count;
201	}	229	}
202		230
203	static sigset_t fullsigset;	231	static sigset_t fullsigset;
204		232
205	#undef errno	233	#undef errno
206	#include <asm/unistd.h>	234	#include <asm/unistd.h>
		235	#include <sys/prctl.h>
		236
		237	#define COPY_STATDATA \
		238	req->statdata->st_dev = statdata.st_dev; \
		239	req->statdata->st_ino = statdata.st_ino; \
		240	req->statdata->st_mode = statdata.st_mode; \
		241	req->statdata->st_nlink = statdata.st_nlink; \
		242	req->statdata->st_uid = statdata.st_uid; \
		243	req->statdata->st_gid = statdata.st_gid; \
		244	req->statdata->st_rdev = statdata.st_rdev; \
		245	req->statdata->st_size = statdata.st_size; \
		246	req->statdata->st_atime = statdata.st_atime; \
		247	req->statdata->st_mtime = statdata.st_mtime; \
		248	req->statdata->st_ctime = statdata.st_ctime; \
		249	req->statdata->st_blksize = statdata.st_blksize; \
		250	req->statdata->st_blocks = statdata.st_blocks; \
207		251
208	static int	252	static int
209	aio_proc(void *thr_arg)	253	aio_proc (void *thr_arg)
210	{	254	{
211	aio_thread *thr = thr_arg;	255	aio_thread *thr = thr_arg;
212	aio_req req;	256	aio_req req;
213	int errno;	257	int errno;
214		258
215	/* this is very much x86 and kernel-specific :(:(:( */	259	/* this is very much kernel-specific :(:(:( */
216	/* we rely on gcc's ability to create closures. */	260	/* we rely on gcc's ability to create closures. */
217	_syscall3(int,read,int,fd,char *,buf,size_t,count)	261	_syscall3(int,read,int,fd,char *,buf,size_t,count)
218	_syscall3(int,write,int,fd,char *,buf,size_t,count)	262	_syscall3(int,write,int,fd,char *,buf,size_t,count)
219		263
220	_syscall3(int,open,char *,pathname,int,flags,mode_t,mode)	264	_syscall3(int,open,char *,pathname,int,flags,mode_t,mode)
221	_syscall1(int,close,int,fd)	265	_syscall1(int,close,int,fd)
222		266
		267	#define arch64 (__ia64 \|\| __alpha)
		268
		269	#ifdef __NR_pread64 && !arch64
223	_syscall5(int,pread64,int,fd,char *,buf,size_t,count,unsigned int,offset_lo,unsigned int,offset_hi)	270	_syscall5(int,pread64,int,fd,char *,buf,size_t,count,unsigned int,offset_lo,unsigned int,offset_hi)
224	_syscall5(int,pwrite64,int,fd,char *,buf,size_t,count,unsigned int,offset_lo,unsigned int,offset_hi)	271	_syscall5(int,pwrite64,int,fd,char *,buf,size_t,count,unsigned int,offset_lo,unsigned int,offset_hi)
		272	#elif __NR_pread
		273	_syscall4(int,pread,int,fd,char *,buf,size_t,count,offset_t,offset)
		274	_syscall4(int,pwrite,int,fd,char *,buf,size_t,count,offset_t,offset)
		275	#else
		276	# error "neither pread nor pread64 defined"
		277	#endif
225		278
		279
		280	#ifdef __NR_stat64 && !arch64
226	_syscall2(int,stat64, const char , filename, struct stat64 , buf)	281	_syscall2(int,stat64, const char , filename, struct stat64 , buf)
227	_syscall2(int,lstat64, const char , filename, struct stat64 , buf)	282	_syscall2(int,lstat64, const char , filename, struct stat64 , buf)
228	_syscall2(int,fstat64, int, fd, struct stat64 *, buf)	283	_syscall2(int,fstat64, int, fd, struct stat64 *, buf)
		284	#elif __NR_stat
		285	_syscall2(int,stat, const char , filename, struct stat , buf)
		286	_syscall2(int,lstat, const char , filename, struct stat , buf)
		287	_syscall2(int,fstat, int, fd, struct stat *, buf)
		288	#else
		289	# error "neither stat64 nor stat defined"
		290	#endif
		291
		292	_syscall1(int,unlink, char *, filename);
229		293
230	sigprocmask (SIG_SETMASK, &fullsigset, 0);	294	sigprocmask (SIG_SETMASK, &fullsigset, 0);
		295	prctl (PR_SET_PDEATHSIG, SIGKILL);
231		296
232	/* then loop */	297	/* then loop */
233	while (read (reqpipe[0], (void *)&req, sizeof (req)) == sizeof (req))	298	while (read (reqpipe[0], (void *)&req, sizeof (req)) == sizeof (req))
234	{	299	{
235	req->thread = thr;	300	req->thread = thr;
236	errno = 0; /* strictly unnecessary */	301	errno = 0; /* strictly unnecessary */
237		302
238	if (req->type == REQ_READ)	303	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	{	304	{
		305	#ifdef __NR_pread64
		306	case REQ_READ: req->result = pread64 (req->fd, req->dataptr, req->length, req->offset & 0xffffffff, req->offset >> 32); break;
		307	case REQ_WRITE: req->result = pwrite64(req->fd, req->dataptr, req->length, req->offset & 0xffffffff, req->offset >> 32); break;
		308	#else
		309	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
		310	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
		311	#endif
		312	#ifdef __NR_stat64
		313	struct stat64 statdata;
		314	case REQ_STAT: req->result = stat64 (req->dataptr, &statdata); COPY_STATDATA; break;
		315	case REQ_LSTAT: req->result = lstat64 (req->dataptr, &statdata); COPY_STATDATA; break;
		316	case REQ_FSTAT: req->result = fstat64 (req->fd, &statdata); COPY_STATDATA; break;
		317	#else
		318	struct stat statdata;
		319	case REQ_STAT: req->result = stat (req->dataptr, &statdata); COPY_STATDATA; break;
		320	case REQ_LSTAT: req->result = lstat (req->dataptr, &statdata); COPY_STATDATA; break;
		321	case REQ_FSTAT: req->result = fstat (req->fd, &statdata); COPY_STATDATA; break;
		322	#endif
		323	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
		324	case REQ_CLOSE: req->result = close (req->fd); break;
		325	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
		326
		327	case REQ_QUIT:
		328	default:
254	write (respipe[1], (void *)&req, sizeof (req));	329	write (respipe[1], (void *)&req, sizeof (req));
255	break;	330	return 0;
256	}	331	}
257		332
258	req->errorno = errno;	333	req->errorno = errno;
259	write (respipe[1], (void *)&req, sizeof (req));	334	write (respipe[1], (void *)&req, sizeof (req));
260	}	335	}
…		…
272	sigdelset (&fullsigset, SIGABRT);	347	sigdelset (&fullsigset, SIGABRT);
273	sigdelset (&fullsigset, SIGINT);	348	sigdelset (&fullsigset, SIGINT);
274		349
275	if (pipe (reqpipe) \|\| pipe (respipe))	350	if (pipe (reqpipe) \|\| pipe (respipe))
276	croak ("unable to initialize request or result pipe");	351	croak ("unable to initialize request or result pipe");
		352
		353	if (fcntl (reqpipe[1], F_SETFL, O_NONBLOCK))
		354	croak ("cannot set result pipe to nonblocking mode");
277		355
278	if (fcntl (respipe[0], F_SETFL, O_NONBLOCK))	356	if (fcntl (respipe[0], F_SETFL, O_NONBLOCK))
279	croak ("cannot set result pipe to nonblocking mode");	357	croak ("cannot set result pipe to nonblocking mode");
280	}	358	}
281		359
…		…
299	cur--;	377	cur--;
300	}	378	}
301		379
302	while (started > nthreads)	380	while (started > nthreads)
303	{	381	{
304	fd_set rfd;	382	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 ();	383	poll_cb (aTHX);
310	}	384	}
311		385
312	void	386	void
313	aio_open(pathname,flags,mode,callback)	387	aio_open(pathname,flags,mode,callback)
314	SV * pathname	388	SV * pathname
…		…
389	Newz (0, req, 1, aio_cb);	463	Newz (0, req, 1, aio_cb);
390		464
391	if (!req)	465	if (!req)
392	croak ("out of memory during aio_req allocation");	466	croak ("out of memory during aio_req allocation");
393		467
394	New (0, req->statdata, 1, struct stat64);	468	New (0, req->statdata, 1, Stat_t);
395		469
396	if (!req->statdata)	470	if (!req->statdata)
397	croak ("out of memory during aio_req->statdata allocation");	471	croak ("out of memory during aio_req->statdata allocation");
398		472
399	if (SvPOK (fh_or_path))	473	if (SvPOK (fh_or_path))
…		…
410		484
411	req->callback = SvREFCNT_inc (callback);	485	req->callback = SvREFCNT_inc (callback);
412		486
413	send_req (req);	487	send_req (req);
414		488
		489	void
		490	aio_unlink(pathname,callback)
		491	SV * pathname
		492	SV * callback
		493	PROTOTYPE: $$
		494	CODE:
		495	aio_req req;
		496
		497	Newz (0, req, 1, aio_cb);
		498
		499	if (!req)
		500	croak ("out of memory during aio_req allocation");
		501
		502	req->type = REQ_UNLINK;
		503	req->data = newSVsv (pathname);
		504	req->dataptr = SvPV_nolen (req->data);
		505	req->callback = SvREFCNT_inc (callback);
		506
		507	send_req (req);
		508
415	int	509	int
416	poll_fileno()	510	poll_fileno()
417	PROTOTYPE:	511	PROTOTYPE:
418	CODE:	512	CODE:
419	RETVAL = respipe[0];	513	RETVAL = respipe[0];
…		…
426	CODE:	520	CODE:
427	RETVAL = poll_cb (aTHX);	521	RETVAL = poll_cb (aTHX);
428	OUTPUT:	522	OUTPUT:
429	RETVAL	523	RETVAL
430		524
		525	void
		526	poll_wait()
		527	PROTOTYPE:
		528	CODE:
		529	poll_wait ();
		530
431	int	531	int
432	nreqs()	532	nreqs()
433	PROTOTYPE:	533	PROTOTYPE:
434	CODE:	534	CODE:
435	RETVAL = nreqs;	535	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 1.24 by root, Sat Jul 2 13:16:33 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 1.24 by root, Sat Jul 2 13:16:33 2005 UTC