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

Comparing Linux-AIO/AIO.xs (file contents):
Revision 1.9 by root, Thu Aug 16 18:58:34 2001 UTC vs.
Revision 1.21 by root, Fri Aug 6 17:18:08 2004 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>
		8	#include <sys/stat.h>
6	#include <unistd.h>	9	#include <unistd.h>
7	#include <fcntl.h>	10	#include <fcntl.h>
8	#include <signal.h>	11	#include <signal.h>
9	#include <sched.h>	12	#include <sched.h>
10		13
		14	typedef void InputStream; / hack, but 5.6.1 is simply toooo old ;) */
		15	typedef void OutputStream; / hack, but 5.6.1 is simply toooo old ;) */
		16	typedef void InOutStream; / hack, but 5.6.1 is simply toooo old ;) */
		17
11	#define STACKSIZE 1024 /* yeah */	18	#define STACKSIZE 1024 /* yeah */
12		19
13	enum { REQ_QUIT, REQ_READ, REQ_WRITE, REQ_OPEN };	20	enum {
		21	REQ_QUIT,
		22	REQ_OPEN, REQ_CLOSE, REQ_READ, REQ_WRITE,
		23	REQ_STAT, REQ_LSTAT, REQ_FSTAT, REQ_UNLINK
		24	};
14		25
15	typedef struct {	26	typedef struct {
16	char stack[STACKSIZE];	27	char stack[STACKSIZE];
17	} aio_thread;	28	} aio_thread;
18		29
19	typedef struct {	30	typedef struct aio_cb {
		31	struct aio_cb *next;
		32
20	int type;	33	int type;
21	aio_thread *thread;	34	aio_thread *thread;
22		35
23	/* read/write */
24	int fd;	36	int fd;
25	off_t offset;	37	off_t offset;
26	size_t length;	38	size_t length;
27	ssize_t result;	39	ssize_t result;
28	mode_t mode; /* open */	40	mode_t mode; /* open */
29	int errorno;	41	int errorno;
30	SV data, callback;	42	SV data, callback;
31	void *dataptr;	43	void *dataptr;
32	STRLEN dataoffset;	44	STRLEN dataoffset;
		45
		46	Stat_t *statdata;
33	} aio_cb;	47	} aio_cb;
34		48
35	typedef aio_cb *aio_req;	49	typedef aio_cb *aio_req;
36		50
37	static int started;	51	static int started;
38	static int nreqs;	52	static int nreqs;
39	static int reqpipe[2], respipe[2];	53	static int reqpipe[2], respipe[2];
40		54
		55	static aio_req qs, qe; /* queue start, queue end */
		56
41	static int aio_proc(void *arg);	57	static int aio_proc(void *arg);
42		58
43	static void	59	static void
44	start_thread(void)	60	start_thread (void)
45	{	61	{
46	aio_thread *thr;	62	aio_thread *thr;
47		63
48	New (0, thr, 1, aio_thread);	64	New (0, thr, 1, aio_thread);
49		65
50	if (clone (aio_proc,	66	if (clone (aio_proc,
51	&(thr->stack[STACKSIZE]),	67	&(thr->stack[STACKSIZE]),
52	CLONE_VM\|CLONE_FS\|CLONE_FILES\|CLONE_SIGHAND,	68	CLONE_VM\|CLONE_FS\|CLONE_FILES,
53	thr) >= 0)	69	thr) >= 0)
54	started++;	70	started++;
55	else	71	else
56	Safefree (thr);	72	Safefree (thr);
57	}	73	}
58		74
59	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	qe->next = req;
		94	else
		95	qe = qs = req;
		96
		97	send_reqs ();
		98	}
		99
		100	static void
60	end_thread(void)	101	end_thread (void)
61	{	102	{
62	aio_req req;	103	aio_req req;
63	New (0, req, 1, aio_cb);	104	New (0, req, 1, aio_cb);
64	req->type = REQ_QUIT;	105	req->type = REQ_QUIT;
65	write (reqpipe[1], &req, sizeof (aio_req));	106
		107	send_req (req);
66	}	108	}
67		109
68	static void	110	static void
69	send_req (aio_req req)	111	read_write (pTHX_
70	{
71	nreqs++;
72	write (reqpipe[1], &req, sizeof (aio_req));
73	}
74
75	static void
76	read_write (pTHX_ int dowrite, int fd, off_t offset, size_t length,	112	int dowrite, int fd, off_t offset, size_t length,
77	SV data, STRLEN dataoffset, SVcallback)	113	SV data, STRLEN dataoffset, SV callback)
78	{	114	{
79	aio_req req;	115	aio_req req;
80	STRLEN svlen;	116	STRLEN svlen;
81	char *svptr = SvPV (data, svlen);	117	char *svptr = SvPV (data, svlen);
		118
		119	SvUPGRADE (data, SVt_PV);
		120	SvPOK_on (data);
82		121
83	if (dataoffset < 0)	122	if (dataoffset < 0)
84	dataoffset += svlen;	123	dataoffset += svlen;
85		124
86	if (dataoffset < 0 \|\| dataoffset > svlen)	125	if (dataoffset < 0 \|\| dataoffset > svlen)
99	}	138	}
100		139
101	if (length < 0)	140	if (length < 0)
102	croak ("length must not be negative");	141	croak ("length must not be negative");
103		142
104	New (0, req, 1, aio_cb);	143	Newz (0, req, 1, aio_cb);
105		144
106	if (!req)	145	if (!req)
107	croak ("out of memory during aio_req allocation");	146	croak ("out of memory during aio_req allocation");
108		147
109	req->type = dowrite ? REQ_WRITE : REQ_READ;	148	req->type = dowrite ? REQ_WRITE : REQ_READ;
…		…
138		177
139	if (req->type == REQ_READ)	178	if (req->type == REQ_READ)
140	SvCUR_set (req->data, req->dataoffset	179	SvCUR_set (req->data, req->dataoffset
141	+ req->result > 0 ? req->result : 0);	180	+ req->result > 0 ? req->result : 0);
142		181
		182	if (req->data)
		183	SvREFCNT_dec (req->data);
		184
		185	if (req->type == REQ_STAT \|\| req->type == REQ_LSTAT \|\| req->type == REQ_FSTAT)
		186	{
		187	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
		188	PL_laststatval = req->result;
		189	PL_statcache = *(req->statdata);
		190
		191	Safefree (req->statdata);
		192	}
		193
143	PUSHMARK (SP);	194	PUSHMARK (SP);
144	XPUSHs (sv_2mortal (newSViv (req->result)));	195	XPUSHs (sv_2mortal (newSViv (req->result)));
145	PUTBACK;	196	PUTBACK;
146	call_sv (req->callback, G_VOID);	197	call_sv (req->callback, G_VOID);
147	SPAGAIN;	198	SPAGAIN;
148		199
149	SvREFCNT_dec (req->data);	200	if (req->callback)
150	SvREFCNT_dec (req->callback);	201	SvREFCNT_dec (req->callback);
151		202
152	errno = errorno;	203	errno = errorno;
153	nreqs--;	204	nreqs--;
154	count++;	205	count++;
155	}	206	}
156		207
157	Safefree (req);	208	Safefree (req);
158	}	209	}
159		210
		211	if (qs)
		212	send_reqs ();
		213
160	return count;	214	return count;
161	}	215	}
162		216
163	static sigset_t fullsigset;	217	static sigset_t fullsigset;
164		218
165	#undef errno	219	#undef errno
166	#include <asm/unistd.h>	220	#include <asm/unistd.h>
		221	#include <sys/prctl.h>
		222
		223	#define COPY_STATDATA \
		224	req->statdata->st_dev = statdata.st_dev; \
		225	req->statdata->st_ino = statdata.st_ino; \
		226	req->statdata->st_mode = statdata.st_mode; \
		227	req->statdata->st_nlink = statdata.st_nlink; \
		228	req->statdata->st_uid = statdata.st_uid; \
		229	req->statdata->st_gid = statdata.st_gid; \
		230	req->statdata->st_rdev = statdata.st_rdev; \
		231	req->statdata->st_size = statdata.st_size; \
		232	req->statdata->st_atime = statdata.st_atime; \
		233	req->statdata->st_mtime = statdata.st_mtime; \
		234	req->statdata->st_ctime = statdata.st_ctime; \
		235	req->statdata->st_blksize = statdata.st_blksize; \
		236	req->statdata->st_blocks = statdata.st_blocks; \
167		237
168	static int	238	static int
169	aio_proc(void *thr_arg)	239	aio_proc (void *thr_arg)
170	{	240	{
171	aio_thread *thr = thr_arg;	241	aio_thread *thr = thr_arg;
172	aio_req req;	242	aio_req req;
173	int errno;	243	int errno;
174		244
		245	/* this is very much kernel-specific :(:(:( */
		246	/* we rely on gcc's ability to create closures. */
		247	_syscall3(int,read,int,fd,char *,buf,size_t,count)
		248	_syscall3(int,write,int,fd,char *,buf,size_t,count)
		249
		250	_syscall3(int,open,char *,pathname,int,flags,mode_t,mode)
		251	_syscall1(int,close,int,fd)
		252
		253	#ifdef __NR_pread64
		254	_syscall5(int,pread64,int,fd,char *,buf,size_t,count,unsigned int,offset_lo,unsigned int,offset_hi)
		255	_syscall5(int,pwrite64,int,fd,char *,buf,size_t,count,unsigned int,offset_lo,unsigned int,offset_hi)
		256	#elif __NR_pread
		257	_syscall4(int,pread,int,fd,char *,buf,size_t,count,offset_t,offset)
		258	_syscall4(int,pwrite,int,fd,char *,buf,size_t,count,offset_t,offset)
		259	#else
		260	# error "neither pread nor pread64 defined"
		261	#endif
		262
		263
		264	#ifdef __NR_stat64
		265	_syscall2(int,stat64, const char , filename, struct stat64 , buf)
		266	_syscall2(int,lstat64, const char , filename, struct stat64 , buf)
		267	_syscall2(int,fstat64, int, fd, struct stat64 *, buf)
		268	#elif __NR_stat
		269	_syscall2(int,stat, const char , filename, struct stat , buf)
		270	_syscall2(int,lstat, const char , filename, struct stat , buf)
		271	_syscall2(int,fstat, int, fd, struct stat *, buf)
		272	#else
		273	# error "neither stat64 nor stat defined"
		274	#endif
		275
		276	_syscall1(int,unlink, char *, filename);
		277
175	sigprocmask (SIG_SETMASK, &fullsigset, 0);	278	sigprocmask (SIG_SETMASK, &fullsigset, 0);
176		279	prctl (PR_SET_PDEATHSIG, SIGKILL);
177	/* we rely on gcc's ability to create closures. */
178	_syscall3(int,lseek,int,fd,off_t,offset,int,whence);
179	_syscall3(int,read,int,fd,char *,buf,off_t,count);
180	_syscall3(int,write,int,fd,char *,buf,off_t,count);
181	_syscall3(int,open,char *,pathname,int,flags,mode_t,mode);
182		280
183	/* then loop */	281	/* then loop */
184	while (read (reqpipe[0], (void *)&req, sizeof (req)) == sizeof (req))	282	while (read (reqpipe[0], (void *)&req, sizeof (req)) == sizeof (req))
185	{	283	{
186	req->thread = thr;	284	req->thread = thr;
187	errno = 0;	285	errno = 0; /* strictly unnecessary */
188		286
189	if (req->type == REQ_READ \|\| req->type == REQ_WRITE)	287	switch (req->type)
190	{	288	{
191	if (lseek (req->fd, req->offset, SEEK_SET) == req->offset)	289	#ifdef __NR_pread64
192	{	290	case REQ_READ: req->result = pread64 (req->fd, req->dataptr, req->length, req->offset & 0xffffffff, req->offset >> 32); break;
193	if (req->type == REQ_READ)	291	case REQ_WRITE: req->result = pwrite64(req->fd, req->dataptr, req->length, req->offset & 0xffffffff, req->offset >> 32); break;
		292	#else
194	req->result = read (req->fd, req->dataptr, req->length);	293	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
195	else
196	req->result = write(req->fd, req->dataptr, req->length);	294	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
197	}	295	#endif
198	}	296	#ifdef __NR_stat64
199	else if (req->type == REQ_OPEN)	297	struct stat64 statdata;
200	{	298	case REQ_STAT: req->result = stat64 (req->dataptr, &statdata); COPY_STATDATA; break;
		299	case REQ_LSTAT: req->result = lstat64 (req->dataptr, &statdata); COPY_STATDATA; break;
		300	case REQ_FSTAT: req->result = fstat64 (req->fd, &statdata); COPY_STATDATA; break;
		301	#else
		302	struct stat statdata;
		303	case REQ_STAT: req->result = stat (req->dataptr, &statdata); COPY_STATDATA; break;
		304	case REQ_LSTAT: req->result = lstat (req->dataptr, &statdata); COPY_STATDATA; break;
		305	case REQ_FSTAT: req->result = fstat (req->fd, &statdata); COPY_STATDATA; break;
		306	#endif
201	req->result = open (req->dataptr, req->fd, req->mode);	307	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
202	}	308	case REQ_CLOSE: req->result = close (req->fd); break;
203	else	309	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
204	{	310
		311	case REQ_QUIT:
		312	default:
205	write (respipe[1], (void *)&req, sizeof (req));	313	write (respipe[1], (void *)&req, sizeof (req));
206	break;	314	return 0;
207	}	315	}
208		316
209	req->errorno = errno;	317	req->errorno = errno;
210	write (respipe[1], (void *)&req, sizeof (req));	318	write (respipe[1], (void *)&req, sizeof (req));
211	}	319	}
…		…
223	sigdelset (&fullsigset, SIGABRT);	331	sigdelset (&fullsigset, SIGABRT);
224	sigdelset (&fullsigset, SIGINT);	332	sigdelset (&fullsigset, SIGINT);
225		333
226	if (pipe (reqpipe) \|\| pipe (respipe))	334	if (pipe (reqpipe) \|\| pipe (respipe))
227	croak ("unable to initialize request or result pipe");	335	croak ("unable to initialize request or result pipe");
		336
		337	if (fcntl (reqpipe[1], F_SETFL, O_NONBLOCK))
		338	croak ("cannot set result pipe to nonblocking mode");
228		339
229	if (fcntl (respipe[0], F_SETFL, O_NONBLOCK))	340	if (fcntl (respipe[0], F_SETFL, O_NONBLOCK))
230	croak ("cannot set result pipe to nonblocking mode");	341	croak ("cannot set result pipe to nonblocking mode");
231	}	342	}
232		343
…		…
248	{	359	{
249	end_thread ();	360	end_thread ();
250	cur--;	361	cur--;
251	}	362	}
252		363
253	poll_cb ();
254	while (started > nthreads)	364	while (started > nthreads)
255	{	365	{
256	sched_yield ();	366	fd_set rfd;
		367	FD_ZERO(&rfd);
		368	FD_SET(respipe[0], &rfd);
		369
		370	select (respipe[0] + 1, &rfd, 0, 0, 0);
257	poll_cb ();	371	poll_cb (aTHX);
258	}	372	}
259		373
260	void	374	void
261	aio_read(fh,offset,length,data,dataoffset,callback)
262	PerlIO * fh
263	UV offset
264	STRLEN length
265	SV * data
266	STRLEN dataoffset
267	SV * callback
268	PROTOTYPE: $$$$$$
269	ALIAS:
270	aio_write = 1
271	CODE:
272	SvUPGRADE (data, SVt_PV);
273	SvPOK_on (data);
274	read_write (aTHX_ ix, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
275
276	void
277	aio_open(pathname,flags,mode,callback)	375	aio_open(pathname,flags,mode,callback)
278	char * pathname	376	SV * pathname
279	int flags	377	int flags
280	int mode	378	int mode
281	SV * callback	379	SV * callback
282	PROTOTYPE: $$$$	380	PROTOTYPE: $$$$
283	CODE:	381	CODE:
284	aio_req req;	382	aio_req req;
285		383
286	New (0, req, 1, aio_cb);	384	Newz (0, req, 1, aio_cb);
287		385
288	if (!req)	386	if (!req)
289	croak ("out of memory during aio_req allocation");	387	croak ("out of memory during aio_req allocation");
290		388
291	req->type = REQ_OPEN;	389	req->type = REQ_OPEN;
292	req->dataptr = pathname;	390	req->data = newSVsv (pathname);
		391	req->dataptr = SvPV_nolen (req->data);
293	req->fd = flags;	392	req->fd = flags;
294	req->mode = mode;	393	req->mode = mode;
295	req->callback = SvREFCNT_inc (callback);	394	req->callback = SvREFCNT_inc (callback);
296		395
297	send_req (req);	396	send_req (req);
298		397
		398	void
		399	aio_close(fh,callback)
		400	InputStream fh
		401	SV * callback
		402	PROTOTYPE: $$
		403	CODE:
		404	aio_req req;
		405
		406	Newz (0, req, 1, aio_cb);
		407
		408	if (!req)
		409	croak ("out of memory during aio_req allocation");
		410
		411	req->type = REQ_CLOSE;
		412	req->fd = PerlIO_fileno (fh);
		413	req->callback = SvREFCNT_inc (callback);
		414
		415	send_req (req);
		416
		417	void
		418	aio_read(fh,offset,length,data,dataoffset,callback)
		419	InputStream fh
		420	UV offset
		421	IV length
		422	SV * data
		423	IV dataoffset
		424	SV * callback
		425	PROTOTYPE: $$$$$$
		426	CODE:
		427	read_write (aTHX_ 0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
		428
		429	void
		430	aio_write(fh,offset,length,data,dataoffset,callback)
		431	OutputStream fh
		432	UV offset
		433	IV length
		434	SV * data
		435	IV dataoffset
		436	SV * callback
		437	PROTOTYPE: $$$$$$
		438	CODE:
		439	read_write (aTHX_ 1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
		440
		441	void
		442	aio_stat(fh_or_path,callback)
		443	SV * fh_or_path
		444	SV * callback
		445	PROTOTYPE: $$
		446	ALIAS:
		447	aio_lstat = 1
		448	CODE:
		449	aio_req req;
		450
		451	Newz (0, req, 1, aio_cb);
		452
		453	if (!req)
		454	croak ("out of memory during aio_req allocation");
		455
		456	New (0, req->statdata, 1, Stat_t);
		457
		458	if (!req->statdata)
		459	croak ("out of memory during aio_req->statdata allocation");
		460
		461	if (SvPOK (fh_or_path))
		462	{
		463	req->type = ix ? REQ_LSTAT : REQ_STAT;
		464	req->data = newSVsv (fh_or_path);
		465	req->dataptr = SvPV_nolen (req->data);
		466	}
		467	else
		468	{
		469	req->type = REQ_FSTAT;
		470	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		471	}
		472
		473	req->callback = SvREFCNT_inc (callback);
		474
		475	send_req (req);
		476
		477	void
		478	aio_unlink(pathname,callback)
		479	SV * pathname
		480	SV * callback
		481	PROTOTYPE: $$
		482	CODE:
		483	aio_req req;
		484
		485	Newz (0, req, 1, aio_cb);
		486
		487	if (!req)
		488	croak ("out of memory during aio_req allocation");
		489
		490	req->type = REQ_UNLINK;
		491	req->data = newSVsv (pathname);
		492	req->dataptr = SvPV_nolen (req->data);
		493	req->callback = SvREFCNT_inc (callback);
		494
		495	send_req (req);
		496
299	int	497	int
300	poll_fileno()	498	poll_fileno()
301	PROTOTYPE:	499	PROTOTYPE:
302	CODE:	500	CODE:
303	RETVAL = respipe[0];	501	RETVAL = respipe[0];

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Comparing Linux-AIO/AIO.xs (file contents): Revision 1.9 by root, Thu Aug 16 18:58:34 2001 UTC vs. Revision 1.21 by root, Fri Aug 6 17:18:08 2004 UTC

Diff Legend

Comparing Linux-AIO/AIO.xs (file contents):
Revision 1.9 by root, Thu Aug 16 18:58:34 2001 UTC vs.
Revision 1.21 by root, Fri Aug 6 17:18:08 2004 UTC