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

Comparing Linux-AIO/AIO.xs (file contents):
Revision 1.14 by root, Tue Apr 2 14:01:09 2002 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>
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	#define STACKSIZE 1024 /* yeah */	18	// 128 seems to be enough most everywhere. alpha needs 256.
		19	#define STACKSIZE (256 * sizeof (long))
17		20
18	enum { REQ_QUIT, REQ_OPEN, REQ_CLOSE, REQ_READ, REQ_WRITE, REQ_STAT, REQ_LSTAT, REQ_FSTAT};	21	enum {
		22	REQ_QUIT,
		23	REQ_OPEN, REQ_CLOSE, REQ_READ, REQ_WRITE,
		24	REQ_STAT, REQ_LSTAT, REQ_FSTAT, REQ_UNLINK
		25	};
19		26
20	typedef struct {	27	typedef struct {
21	char stack[STACKSIZE];	28	char stack[STACKSIZE];
22	} aio_thread;	29	} aio_thread;
23		30
24	typedef struct {	31	typedef struct aio_cb {
		32	struct aio_cb *next;
		33
25	int type;	34	int type;
26	aio_thread *thread;	35	aio_thread *thread;
27		36
28	int fd;	37	int fd;
29	off_t offset;	38	off_t offset;
…		…
33	int errorno;	42	int errorno;
34	SV data, callback;	43	SV data, callback;
35	void *dataptr;	44	void *dataptr;
36	STRLEN dataoffset;	45	STRLEN dataoffset;
37		46
38	struct stat64 *statdata;	47	Stat_t *statdata;
39	} aio_cb;	48	} aio_cb;
40		49
41	typedef aio_cb *aio_req;	50	typedef aio_cb *aio_req;
42		51
43	static int started;	52	static int started;
44	static int nreqs;	53	static int nreqs;
45	static int reqpipe[2], respipe[2];	54	static int reqpipe[2], respipe[2];
46		55
		56	static aio_req qs, qe; /* queue start, queue end */
		57
47	static int aio_proc(void *arg);	58	static int aio_proc(void *arg);
48		59
49	static void	60	static void
50	start_thread(void)	61	start_thread (void)
51	{	62	{
52	aio_thread *thr;	63	aio_thread *thr;
53		64
54	New (0, thr, 1, aio_thread);	65	New (0, thr, 1, aio_thread);
55		66
56	if (clone (aio_proc,	67	if (clone (aio_proc,
57	&(thr->stack[STACKSIZE]),	68	&(thr->stack[STACKSIZE - sizeof (long)]),
58	CLONE_VM\|CLONE_FS\|CLONE_FILES\|CLONE_SIGHAND,	69	CLONE_VM\|CLONE_FS\|CLONE_FILES,
59	thr) >= 0)	70	thr) >= 0)
60	started++;	71	started++;
61	else	72	else
62	Safefree (thr);	73	Safefree (thr);
63	}	74	}
64		75
65	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
66	end_thread(void)	105	end_thread (void)
67	{	106	{
68	aio_req req;	107	aio_req req;
69	New (0, req, 1, aio_cb);	108	New (0, req, 1, aio_cb);
70	req->type = REQ_QUIT;	109	req->type = REQ_QUIT;
71	write (reqpipe[1], &req, sizeof (aio_req));	110
		111	send_req (req);
72	}	112	}
73		113
74	static void	114	static void
75	send_req (aio_req req)	115	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,	116	int dowrite, int fd, off_t offset, size_t length,
83	SV data, STRLEN dataoffset, SVcallback)	117	SV data, STRLEN dataoffset, SV callback)
84	{	118	{
85	aio_req req;	119	aio_req req;
86	STRLEN svlen;	120	STRLEN svlen;
87	char *svptr = SvPV (data, svlen);	121	char *svptr = SvPV (data, svlen);
88		122
…		…
124	req->callback = SvREFCNT_inc (callback);	158	req->callback = SvREFCNT_inc (callback);
125		159
126	send_req (req);	160	send_req (req);
127	}	161	}
128		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
129	static int	173	static int
130	poll_cb (pTHX)	174	poll_cb (pTHX)
131	{	175	{
132	dSP;	176	dSP;
133	int count = 0;	177	int count = 0;
134	aio_req req;	178	aio_req req;
135		179
136	while (read (respipe[0], (void *)&req, sizeof (req)) == sizeof (req))	180	while (read (respipe[0], (void *)&req, sizeof (req)) == sizeof (req))
137	{	181	{
		182	nreqs--;
		183
138	if (req->type == REQ_QUIT)	184	if (req->type == REQ_QUIT)
139	{	185	{
140	Safefree (req->thread);	186	Safefree (req->thread);
141	started--;	187	started--;
142	}	188	}
…		…
152	if (req->data)	198	if (req->data)
153	SvREFCNT_dec (req->data);	199	SvREFCNT_dec (req->data);
154		200
155	if (req->type == REQ_STAT \|\| req->type == REQ_LSTAT \|\| req->type == REQ_FSTAT)	201	if (req->type == REQ_STAT \|\| req->type == REQ_LSTAT \|\| req->type == REQ_FSTAT)
156	{	202	{
157	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	203	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
158	PL_laststatval = req->result;	204	PL_laststatval = req->result;
159	PL_statcache.st_dev = req->statdata->st_dev;	205	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		206
173	Safefree (req->statdata);	207	Safefree (req->statdata);
174	}	208	}
175		209
176	PUSHMARK (SP);	210	PUSHMARK (SP);
…		…
181		215
182	if (req->callback)	216	if (req->callback)
183	SvREFCNT_dec (req->callback);	217	SvREFCNT_dec (req->callback);
184		218
185	errno = errorno;	219	errno = errorno;
186	nreqs--;
187	count++;	220	count++;
188	}	221	}
189		222
190	Safefree (req);	223	Safefree (req);
191	}	224	}
192		225
		226	if (qs)
		227	send_reqs ();
		228
193	return count;	229	return count;
194	}	230	}
195		231
196	static sigset_t fullsigset;	232	static sigset_t fullsigset;
197		233
198	#undef errno	234	#undef errno
199	#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; \
200		263
201	static int	264	static int
202	aio_proc(void *thr_arg)	265	aio_proc (void *thr_arg)
203	{	266	{
204	aio_thread *thr = thr_arg;	267	aio_thread *thr = thr_arg;
205	aio_req req;	268	aio_req req;
206	int errno;	269	int errno;
207		270
		271	/* this is very much kernel-specific :(:(:( */
208	/* we rely on gcc's ability to create closures. */	272	/* we rely on gcc's ability to create closures. */
209	_syscall3(int,read,int,fd,char *,buf,size_t,count)	273	_syscall3(int,read,int,fd,char *,buf,size_t,count)
210	_syscall3(int,write,int,fd,char *,buf,size_t,count)	274	_syscall3(int,write,int,fd,char *,buf,size_t,count)
211		275
212	_syscall3(int,open,char *,pathname,int,flags,mode_t,mode)	276	_syscall3(int,open,char *,pathname,int,flags,mode_t,mode)
213	_syscall1(int,close,int,fd)	277	_syscall1(int,close,int,fd)
214		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
215	_syscall4(int,pread,int,fd,char *,buf,size_t,count,off_t,offset)	283	_syscall4(int,pread,int,fd,char *,buf,size_t,count,offset_t,offset)
216	_syscall4(int,pwrite,int,fd,char *,buf,size_t,count,off_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
217		288
		289
		290	#if __NR_stat64
218	_syscall2(int,stat64, const char , filename, struct stat64 , buf)	291	_syscall2(int,stat64, const char , filename, struct kernelstat64 , buf)
219	_syscall2(int,lstat64, const char , filename, struct stat64 , buf)	292	_syscall2(int,lstat64, const char , filename, struct kernelstat64 , buf)
220	_syscall2(int,fstat64, int, fd, struct stat64 *, 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);
221		303
222	sigprocmask (SIG_SETMASK, &fullsigset, 0);	304	sigprocmask (SIG_SETMASK, &fullsigset, 0);
		305	prctl (PR_SET_PDEATHSIG, SIGKILL);
223		306
224	/* then loop */	307	/* then loop */
225	while (read (reqpipe[0], (void *)&req, sizeof (req)) == sizeof (req))	308	while (read (reqpipe[0], (void *)&req, sizeof (req)) == sizeof (req))
226	{	309	{
227	req->thread = thr;	310	req->thread = thr;
228	errno = 0; /* strictly unnecessary */	311	errno = 0; /* strictly unnecessary */
229		312
230	if (req->type == REQ_READ)	313	switch (req->type)
231	req->result = pread (req->fd, req->dataptr, req->length, req->offset);
232	else if (req->type == REQ_WRITE)
233	req->result = pwrite (req->fd, req->dataptr, req->length, req->offset);
234	else if (req->type == REQ_OPEN)
235	req->result = open (req->dataptr, req->fd, req->mode);
236	else if (req->type == REQ_CLOSE)
237	req->result = close (req->fd);
238	else if (req->type == REQ_STAT)
239	req->result = stat64 (req->dataptr, req->statdata);
240	else if (req->type == REQ_LSTAT)
241	req->result = lstat64 (req->dataptr, req->statdata);
242	else if (req->type == REQ_FSTAT)
243	req->result = fstat64 (req->fd, req->statdata);
244	else
245	{	314	{
		315	#if __NR_pread64
		316	case REQ_READ: req->result = pread64 (req->fd, req->dataptr, req->length, req->offset & 0xffffffff, req->offset >> 32); break;
		317	case REQ_WRITE: req->result = pwrite64(req->fd, req->dataptr, req->length, req->offset & 0xffffffff, req->offset >> 32); break;
		318	#else
		319	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
		320	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
		321	#endif
		322	#if __NR_stat64
		323	struct kernelstat64 statdata;
		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
		333	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
		334	case REQ_CLOSE: req->result = close (req->fd); break;
		335	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
		336
		337	case REQ_QUIT:
		338	default:
246	write (respipe[1], (void *)&req, sizeof (req));	339	write (respipe[1], (void *)&req, sizeof (req));
247	break;	340	return 0;
248	}	341	}
249		342
250	req->errorno = errno;	343	req->errorno = errno;
251	write (respipe[1], (void *)&req, sizeof (req));	344	write (respipe[1], (void *)&req, sizeof (req));
252	}	345	}
…		…
264	sigdelset (&fullsigset, SIGABRT);	357	sigdelset (&fullsigset, SIGABRT);
265	sigdelset (&fullsigset, SIGINT);	358	sigdelset (&fullsigset, SIGINT);
266		359
267	if (pipe (reqpipe) \|\| pipe (respipe))	360	if (pipe (reqpipe) \|\| pipe (respipe))
268	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");
269		365
270	if (fcntl (respipe[0], F_SETFL, O_NONBLOCK))	366	if (fcntl (respipe[0], F_SETFL, O_NONBLOCK))
271	croak ("cannot set result pipe to nonblocking mode");	367	croak ("cannot set result pipe to nonblocking mode");
272	}	368	}
273		369
…		…
291	cur--;	387	cur--;
292	}	388	}
293		389
294	while (started > nthreads)	390	while (started > nthreads)
295	{	391	{
296	fd_set rfd;	392	poll_wait ();
297	FD_ZERO(&rfd);
298	FD_SET(respipe[0], &rfd);
299
300	select (respipe[0] + 1, &rfd, 0, 0, 0);
301	poll_cb ();	393	poll_cb (aTHX);
302	}	394	}
303		395
304	void	396	void
305	aio_open(pathname,flags,mode,callback)	397	aio_open(pathname,flags,mode,callback)
306	SV * pathname	398	SV * pathname
…		…
381	Newz (0, req, 1, aio_cb);	473	Newz (0, req, 1, aio_cb);
382		474
383	if (!req)	475	if (!req)
384	croak ("out of memory during aio_req allocation");	476	croak ("out of memory during aio_req allocation");
385		477
386	New (0, req->statdata, 1, struct stat64);	478	New (0, req->statdata, 1, Stat_t);
387		479
388	if (!req->statdata)	480	if (!req->statdata)
389	croak ("out of memory during aio_req->statdata allocation");	481	croak ("out of memory during aio_req->statdata allocation");
390		482
391	if (SvPOK (fh_or_path))	483	if (SvPOK (fh_or_path))
…		…
402		494
403	req->callback = SvREFCNT_inc (callback);	495	req->callback = SvREFCNT_inc (callback);
404		496
405	send_req (req);	497	send_req (req);
406		498
		499	void
		500	aio_unlink(pathname,callback)
		501	SV * pathname
		502	SV * callback
		503	PROTOTYPE: $$
		504	CODE:
		505	aio_req req;
		506
		507	Newz (0, req, 1, aio_cb);
		508
		509	if (!req)
		510	croak ("out of memory during aio_req allocation");
		511
		512	req->type = REQ_UNLINK;
		513	req->data = newSVsv (pathname);
		514	req->dataptr = SvPV_nolen (req->data);
		515	req->callback = SvREFCNT_inc (callback);
		516
		517	send_req (req);
		518
407	int	519	int
408	poll_fileno()	520	poll_fileno()
409	PROTOTYPE:	521	PROTOTYPE:
410	CODE:	522	CODE:
411	RETVAL = respipe[0];	523	RETVAL = respipe[0];
…		…
418	CODE:	530	CODE:
419	RETVAL = poll_cb (aTHX);	531	RETVAL = poll_cb (aTHX);
420	OUTPUT:	532	OUTPUT:
421	RETVAL	533	RETVAL
422		534
		535	void
		536	poll_wait()
		537	PROTOTYPE:
		538	CODE:
		539	poll_wait ();
		540
423	int	541	int
424	nreqs()	542	nreqs()
425	PROTOTYPE:	543	PROTOTYPE:
426	CODE:	544	CODE:
427	RETVAL = nreqs;	545	RETVAL = nreqs;

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Comparing Linux-AIO/AIO.xs (file contents): Revision 1.14 by root, Tue Apr 2 14:01:09 2002 UTC vs. Revision 1.25 by root, Thu Jul 7 22:24:09 2005 UTC

Diff Legend

Comparing Linux-AIO/AIO.xs (file contents):
Revision 1.14 by root, Tue Apr 2 14:01:09 2002 UTC vs.
Revision 1.25 by root, Thu Jul 7 22:24:09 2005 UTC