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

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.15 by root, Sat Jul 23 18:19:56 2005 UTC vs.
Revision 1.23 by root, Tue Aug 16 23:33:34 2005 UTC

…		…
		1	#define _REENTRANT 1
		2	#include <errno.h>
		3
1	#include "EXTERN.h"	4	#include "EXTERN.h"
2	#include "perl.h"	5	#include "perl.h"
3	#include "XSUB.h"	6	#include "XSUB.h"
		7
		8	#include "autoconf/config.h"
4		9
5	#include <sys/types.h>	10	#include <sys/types.h>
6	#include <sys/stat.h>	11	#include <sys/stat.h>
7		12
8	#include <unistd.h>	13	#include <unistd.h>
9	#include <fcntl.h>	14	#include <fcntl.h>
10	#include <signal.h>	15	#include <signal.h>
11	#include <sched.h>	16	#include <sched.h>
12	#if __linux
13	#include <sys/syscall.h>
14	#endif
15		17
16	#include <pthread.h>	18	#include <pthread.h>
17		19
18	typedef void InputStream; / hack, but 5.6.1 is simply toooo old ;) */	20	typedef void InputStream; / hack, but 5.6.1 is simply toooo old ;) */
19	typedef void OutputStream; / hack, but 5.6.1 is simply toooo old ;) */	21	typedef void OutputStream; / hack, but 5.6.1 is simply toooo old ;) */
27		29
28	enum {	30	enum {
29	REQ_QUIT,	31	REQ_QUIT,
30	REQ_OPEN, REQ_CLOSE,	32	REQ_OPEN, REQ_CLOSE,
31	REQ_READ, REQ_WRITE, REQ_READAHEAD,	33	REQ_READ, REQ_WRITE, REQ_READAHEAD,
32	REQ_STAT, REQ_LSTAT, REQ_FSTAT, REQ_UNLINK,	34	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
33	REQ_FSYNC, REQ_FDATASYNC,	35	REQ_FSYNC, REQ_FDATASYNC,
		36	REQ_UNLINK, REQ_RMDIR,
		37	REQ_SYMLINK,
34	};	38	};
35		39
36	typedef struct aio_cb {	40	typedef struct aio_cb {
37	struct aio_cb *volatile next;	41	struct aio_cb *volatile next;
38		42
…		…
43	size_t length;	47	size_t length;
44	ssize_t result;	48	ssize_t result;
45	mode_t mode; /* open */	49	mode_t mode; /* open */
46	int errorno;	50	int errorno;
47	SV data, callback, *fh;	51	SV data, callback, *fh;
48	void *dataptr;	52	void dataptr, data2ptr;
49	STRLEN dataoffset;	53	STRLEN dataoffset;
50		54
51	Stat_t *statdata;	55	Stat_t *statdata;
52	} aio_cb;	56	} aio_cb;
53		57
…		…
58	static int max_outstanding = 1<<30;	62	static int max_outstanding = 1<<30;
59	static int respipe [2];	63	static int respipe [2];
60		64
61	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	65	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;
62	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;	66	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
		67	static pthread_mutex_t frklock = PTHREAD_MUTEX_INITIALIZER;
63	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	68	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
64		69
65	static volatile aio_req reqs, reqe; /* queue start, queue end */	70	static volatile aio_req reqs, reqe; /* queue start, queue end */
66	static volatile aio_req ress, rese; /* queue start, queue end */	71	static volatile aio_req ress, rese; /* queue start, queue end */
67		72
…		…
88	pthread_mutex_lock (&reslock);	93	pthread_mutex_lock (&reslock);
89		94
90	{	95	{
91	/* read any signals sent by the worker threads */	96	/* read any signals sent by the worker threads */
92	char buf [32];	97	char buf [32];
93	while (read (respipe [0], buf, 32) > 0)	98	while (read (respipe [0], buf, 32) == 32)
94	;	99	;
95	}	100	}
96		101
97	req = ress;	102	req = ress;
98	ress = rese = 0;	103	ress = rese = 0;
…		…
231	req->type = REQ_QUIT;	236	req->type = REQ_QUIT;
232		237
233	send_req (req);	238	send_req (req);
234	}	239	}
235		240
		241
		242	static void min_parallel (int nthreads)
		243	{
		244	while (nthreads > started)
		245	start_thread ();
		246	}
		247
		248	static void max_parallel (int nthreads)
		249	{
		250	int cur = started;
		251	while (cur > nthreads)
		252	{
		253	end_thread ();
		254	cur--;
		255	}
		256
		257	while (started > nthreads)
		258	{
		259	poll_wait ();
		260	poll_cb ();
		261	}
		262	}
		263
		264	static int fork_started;
		265
		266	static void atfork_prepare (void)
		267	{
		268	pthread_mutex_lock (&frklock);
		269
		270	fork_started = started;
		271
		272	for (;;) {
		273	while (nreqs)
		274	{
		275	poll_wait ();
		276	poll_cb ();
		277	}
		278
		279	max_parallel (0);
		280
		281	pthread_mutex_lock (&reqlock);
		282
		283	if (!nreqs && !started)
		284	break;
		285
		286	pthread_mutex_unlock (&reqlock);
		287
		288	min_parallel (fork_started);
		289	}
		290
		291	pthread_mutex_lock (&reslock);
		292
		293	assert (!started);
		294	assert (!nreqs);
		295	assert (!reqs && !reqe);
		296	assert (!ress && !rese);
		297	}
		298
		299	static void atfork_parent (void)
		300	{
		301	pthread_mutex_unlock (&reslock);
		302	min_parallel (fork_started);
		303	pthread_mutex_unlock (&reqlock);
		304	pthread_mutex_unlock (&frklock);
		305	}
		306
		307	static void atfork_child (void)
		308	{
		309	reqs = reqe = 0;
		310
		311	atfork_parent ();
		312	}
		313
		314	/*****************************************************************************/
		315	/* work around various missing functions */
		316
		317	#if !HAVE_PREADWRITE
		318	# define pread aio_pread
		319	# define pwrite aio_pwrite
		320
		321	/*
		322	* make our pread/pwrite safe against themselves, but not against
		323	* normal read/write by using a mutex. slows down execution a lot,
		324	* but that's your problem, not mine.
		325	*/
		326	static pthread_mutex_t iolock = PTHREAD_MUTEX_INITIALIZER;
		327
		328	static ssize_t
		329	pread (int fd, void *buf, size_t count, off_t offset)
		330	{
		331	ssize_t res;
		332	off_t ooffset;
		333
		334	pthread_mutex_lock (&iolock);
		335	ooffset = lseek (fd, 0, SEEK_CUR);
		336	lseek (fd, offset, SEEK_SET);
		337	res = read (fd, buf, count);
		338	lseek (fd, ooffset, SEEK_SET);
		339	pthread_mutex_unlock (&iolock);
		340
		341	return res;
		342	}
		343
		344	static ssize_t
		345	pwrite (int fd, void *buf, size_t count, off_t offset)
		346	{
		347	ssize_t res;
		348	off_t ooffset;
		349
		350	pthread_mutex_lock (&iolock);
		351	ooffset = lseek (fd, 0, SEEK_CUR);
		352	lseek (fd, offset, SEEK_SET);
		353	res = write (fd, buf, count);
		354	lseek (fd, offset, SEEK_SET);
		355	pthread_mutex_unlock (&iolock);
		356
		357	return res;
		358	}
		359	#endif
		360
		361	#if !HAVE_FDATASYNC
		362	# define fdatasync fsync
		363	#endif
		364
		365	#if !HAVE_READAHEAD
		366	# define readahead aio_readahead
		367
		368	static char readahead_buf[4096];
		369
		370	static ssize_t
		371	readahead (int fd, off_t offset, size_t count)
		372	{
		373	while (count > 0)
		374	{
		375	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
		376
		377	pread (fd, readahead_buf, len, offset);
		378	offset += len;
		379	count -= len;
		380	}
		381
		382	errno = 0;
		383	}
		384	#endif
		385
		386	/*****************************************************************************/
		387
236	static void *	388	static void *
237	aio_proc (void *thr_arg)	389	aio_proc (void *thr_arg)
238	{	390	{
239	aio_req req;	391	aio_req req;
240	int type;	392	int type;
…		…
267		419
268	switch (type)	420	switch (type)
269	{	421	{
270	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;	422	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
271	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;	423	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
272	#if SYS_readahead	424
273	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	425	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
274	#else
275	case REQ_READAHEAD: req->result = -1; errno = ENOSYS; break;
276	#endif
277		426
278	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	427	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
279	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	428	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
280	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	429	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
281		430
282	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;	431	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
283	case REQ_CLOSE: req->result = close (req->fd); break;	432	case REQ_CLOSE: req->result = close (req->fd); break;
284	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	433	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
		434	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
		435	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
285		436
		437	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
286	case REQ_FSYNC: req->result = fsync (req->fd); break;	438	case REQ_FSYNC: req->result = fsync (req->fd); break;
287	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
288		439
289	case REQ_QUIT:	440	case REQ_QUIT:
290	break;	441	break;
291		442
292	default:	443	default:
…		…
318	while (type != REQ_QUIT);	469	while (type != REQ_QUIT);
319		470
320	return 0;	471	return 0;
321	}	472	}
322		473
		474	#define dREQ \
		475	aio_req req; \
		476	\
		477	if (SvOK (callback) && !SvROK (callback)) \
		478	croak ("clalback must be undef or of reference type"); \
		479	\
		480	Newz (0, req, 1, aio_cb); \
		481	if (!req) \
		482	croak ("out of memory during aio_req allocation"); \
		483	\
		484	req->callback = SvREFCNT_inc (callback);
		485
323	MODULE = IO::AIO PACKAGE = IO::AIO	486	MODULE = IO::AIO PACKAGE = IO::AIO
324		487
325	PROTOTYPES: ENABLE	488	PROTOTYPES: ENABLE
326		489
327	BOOT:	490	BOOT:
…		…
332	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))	495	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
333	croak ("cannot set result pipe to nonblocking mode");	496	croak ("cannot set result pipe to nonblocking mode");
334		497
335	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))	498	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
336	croak ("cannot set result pipe to nonblocking mode");	499	croak ("cannot set result pipe to nonblocking mode");
		500
		501	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
337	}	502	}
338		503
339	void	504	void
340	min_parallel(nthreads)	505	min_parallel(nthreads)
341	int nthreads	506	int nthreads
342	PROTOTYPE: $	507	PROTOTYPE: $
343	CODE:
344	while (nthreads > started)
345	start_thread ();
346		508
347	void	509	void
348	max_parallel(nthreads)	510	max_parallel(nthreads)
349	int nthreads	511	int nthreads
350	PROTOTYPE: $	512	PROTOTYPE: $
351	CODE:
352	{
353	int cur = started;
354	while (cur > nthreads)
355	{
356	end_thread ();
357	cur--;
358	}
359
360	while (started > nthreads)
361	{
362	poll_wait ();
363	poll_cb ();
364	}
365	}
366		513
367	int	514	int
368	max_outstanding(nreqs)	515	max_outstanding(nreqs)
369	int nreqs	516	int nreqs
370	PROTOTYPE: $	517	PROTOTYPE: $
…		…
379	int mode	526	int mode
380	SV * callback	527	SV * callback
381	PROTOTYPE: $$$;$	528	PROTOTYPE: $$$;$
382	CODE:	529	CODE:
383	{	530	{
384	aio_req req;	531	dREQ;
385
386	Newz (0, req, 1, aio_cb);
387
388	if (!req)
389	croak ("out of memory during aio_req allocation");
390		532
391	req->type = REQ_OPEN;	533	req->type = REQ_OPEN;
392	req->data = newSVsv (pathname);	534	req->data = newSVsv (pathname);
393	req->dataptr = SvPV_nolen (req->data);	535	req->dataptr = SvPVbyte_nolen (req->data);
394	req->fd = flags;	536	req->fd = flags;
395	req->mode = mode;	537	req->mode = mode;
396	req->callback = SvREFCNT_inc (callback);
397		538
398	send_req (req);	539	send_req (req);
399	}	540	}
400		541
401	void	542	void
…		…
407	aio_close = REQ_CLOSE	548	aio_close = REQ_CLOSE
408	aio_fsync = REQ_FSYNC	549	aio_fsync = REQ_FSYNC
409	aio_fdatasync = REQ_FDATASYNC	550	aio_fdatasync = REQ_FDATASYNC
410	CODE:	551	CODE:
411	{	552	{
412	aio_req req;	553	dREQ;
413
414	Newz (0, req, 1, aio_cb);
415
416	if (!req)
417	croak ("out of memory during aio_req allocation");
418		554
419	req->type = ix;	555	req->type = ix;
420	req->fh = newSVsv (fh);	556	req->fh = newSVsv (fh);
421	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	557	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
422	req->callback = SvREFCNT_inc (callback);
423		558
424	send_req (req);	559	send_req (req);
425	}	560	}
426		561
427	void	562	void
…		…
438	PROTOTYPE: $$$$$;$	573	PROTOTYPE: $$$$$;$
439	CODE:	574	CODE:
440	{	575	{
441	aio_req req;	576	aio_req req;
442	STRLEN svlen;	577	STRLEN svlen;
443	char *svptr = SvPV (data, svlen);	578	char *svptr = SvPVbyte (data, svlen);
444		579
445	SvUPGRADE (data, SVt_PV);	580	SvUPGRADE (data, SVt_PV);
446	SvPOK_on (data);	581	SvPOK_on (data);
447		582
448	if (dataoffset < 0)	583	if (dataoffset < 0)
…		…
464	}	599	}
465		600
466	if (length < 0)	601	if (length < 0)
467	croak ("length must not be negative");	602	croak ("length must not be negative");
468		603
469	Newz (0, req, 1, aio_cb);	604	{
		605	dREQ;
470		606
471	if (!req)
472	croak ("out of memory during aio_req allocation");
473
474	req->type = ix;	607	req->type = ix;
475	req->fh = newSVsv (fh);	608	req->fh = newSVsv (fh);
476	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	609	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
477	: IoOFP (sv_2io (fh)));	610	: IoOFP (sv_2io (fh)));
478	req->offset = offset;	611	req->offset = offset;
479	req->length = length;	612	req->length = length;
480	req->data = SvREFCNT_inc (data);	613	req->data = SvREFCNT_inc (data);
481	req->dataptr = (char *)svptr + dataoffset;	614	req->dataptr = (char *)svptr + dataoffset;
482	req->callback = SvREFCNT_inc (callback);	615	req->callback = SvREFCNT_inc (callback);
483		616
484	send_req (req);	617	send_req (req);
		618	}
485	}	619	}
486		620
487	void	621	void
488	aio_readahead(fh,offset,length,callback=&PL_sv_undef)	622	aio_readahead(fh,offset,length,callback=&PL_sv_undef)
489	SV * fh	623	SV * fh
…		…
491	IV length	625	IV length
492	SV * callback	626	SV * callback
493	PROTOTYPE: $$$;$	627	PROTOTYPE: $$$;$
494	CODE:	628	CODE:
495	{	629	{
496	aio_req req;	630	dREQ;
497
498	if (length < 0)
499	croak ("length must not be negative");
500
501	Newz (0, req, 1, aio_cb);
502
503	if (!req)
504	croak ("out of memory during aio_req allocation");
505		631
506	req->type = REQ_READAHEAD;	632	req->type = REQ_READAHEAD;
507	req->fh = newSVsv (fh);	633	req->fh = newSVsv (fh);
508	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	634	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
509	req->offset = offset;	635	req->offset = offset;
510	req->length = length;	636	req->length = length;
511	req->callback = SvREFCNT_inc (callback);
512		637
513	send_req (req);	638	send_req (req);
514	}	639	}
515		640
516	void	641	void
…		…
520	ALIAS:	645	ALIAS:
521	aio_stat = REQ_STAT	646	aio_stat = REQ_STAT
522	aio_lstat = REQ_LSTAT	647	aio_lstat = REQ_LSTAT
523	CODE:	648	CODE:
524	{	649	{
525	aio_req req;	650	dREQ;
526
527	Newz (0, req, 1, aio_cb);
528
529	if (!req)
530	croak ("out of memory during aio_req allocation");
531		651
532	New (0, req->statdata, 1, Stat_t);	652	New (0, req->statdata, 1, Stat_t);
533
534	if (!req->statdata)	653	if (!req->statdata)
535	croak ("out of memory during aio_req->statdata allocation");	654	croak ("out of memory during aio_req->statdata allocation (sorry, i just leaked memory, too)");
536		655
537	if (SvPOK (fh_or_path))	656	if (SvPOK (fh_or_path))
538	{	657	{
539	req->type = ix;	658	req->type = ix;
540	req->data = newSVsv (fh_or_path);	659	req->data = newSVsv (fh_or_path);
541	req->dataptr = SvPV_nolen (req->data);	660	req->dataptr = SvPVbyte_nolen (req->data);
542	}	661	}
543	else	662	else
544	{	663	{
545	req->type = REQ_FSTAT;	664	req->type = REQ_FSTAT;
546	req->fh = newSVsv (fh_or_path);	665	req->fh = newSVsv (fh_or_path);
547	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	666	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
548	}	667	}
549		668
550	req->callback = SvREFCNT_inc (callback);
551
552	send_req (req);	669	send_req (req);
553	}	670	}
554		671
555	void	672	void
556	aio_unlink(pathname,callback=&PL_sv_undef)	673	aio_unlink(pathname,callback=&PL_sv_undef)
557	SV * pathname	674	SV * pathname
558	SV * callback	675	SV * callback
		676	ALIAS:
		677	aio_unlink = REQ_UNLINK
		678	aio_rmdir = REQ_RMDIR
559	CODE:	679	CODE:
560	{	680	{
561	aio_req req;	681	dREQ;
562		682
563	Newz (0, req, 1, aio_cb);	683	req->type = ix;
		684	req->data = newSVsv (pathname);
		685	req->dataptr = SvPVbyte_nolen (req->data);
564		686
565	if (!req)	687	send_req (req);
566	croak ("out of memory during aio_req allocation");	688	}
		689
		690	void
		691	aio_symlink(oldpath,newpath,callback=&PL_sv_undef)
		692	SV * oldpath
		693	SV * newpath
		694	SV * callback
		695	CODE:
		696	{
		697	dREQ;
567		698
568	req->type = REQ_UNLINK;	699	req->type = REQ_SYMLINK;
		700	req->fh = newSVsv (oldpath);
		701	req->data2ptr = SvPVbyte_nolen (req->fh);
569	req->data = newSVsv (pathname);	702	req->data = newSVsv (newpath);
570	req->dataptr = SvPV_nolen (req->data);	703	req->dataptr = SvPVbyte_nolen (req->data);
571	req->callback = SvREFCNT_inc (callback);
572		704
573	send_req (req);	705	send_req (req);
574	}	706	}
575		707
576	void	708	void

Diff Legend

-–
+Removed lines
-+
+Added lines
-<
+Changed lines
->
+Changed lines

Comparing IO-AIO/AIO.xs (file contents): Revision 1.15 by root, Sat Jul 23 18:19:56 2005 UTC vs. Revision 1.23 by root, Tue Aug 16 23:33:34 2005 UTC

Diff Legend

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.15 by root, Sat Jul 23 18:19:56 2005 UTC vs.
Revision 1.23 by root, Tue Aug 16 23:33:34 2005 UTC