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

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.13 by root, Fri Jul 22 08:25:22 2005 UTC vs.
Revision 1.22 by root, Tue Aug 16 22:22:18 2005 UTC

…		…
1	#define _XOPEN_SOURCE 500	1	#define _REENTRANT 1
		2	#include <errno.h>
2		3
3	#include "EXTERN.h"	4	#include "EXTERN.h"
4	#include "perl.h"	5	#include "perl.h"
5	#include "XSUB.h"	6	#include "XSUB.h"
		7
		8	#include "autoconf/config.h"
6		9
7	#include <sys/types.h>	10	#include <sys/types.h>
8	#include <sys/stat.h>	11	#include <sys/stat.h>
9		12
10	#include <unistd.h>	13	#include <unistd.h>
11	#include <fcntl.h>	14	#include <fcntl.h>
12	#include <signal.h>	15	#include <signal.h>
13	#include <sched.h>	16	#include <sched.h>
14	#if __linux
15	#include <sys/syscall.h>
16	#endif
17		17
18	#include <pthread.h>	18	#include <pthread.h>
19		19
20	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 ;) */
21	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 ;) */
29		29
30	enum {	30	enum {
31	REQ_QUIT,	31	REQ_QUIT,
32	REQ_OPEN, REQ_CLOSE,	32	REQ_OPEN, REQ_CLOSE,
33	REQ_READ, REQ_WRITE, REQ_READAHEAD,	33	REQ_READ, REQ_WRITE, REQ_READAHEAD,
34	REQ_STAT, REQ_LSTAT, REQ_FSTAT, REQ_UNLINK,	34	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
35	REQ_FSYNC, REQ_FDATASYNC,	35	REQ_FSYNC, REQ_FDATASYNC,
		36	REQ_UNLINK, REQ_RMDIR, REQ_SYMLINK,
		37	REQ_SYMLINK,
36	};	38	};
37		39
38	typedef struct aio_cb {	40	typedef struct aio_cb {
39	struct aio_cb *volatile next;	41	struct aio_cb *volatile next;
40		42
…		…
45	size_t length;	47	size_t length;
46	ssize_t result;	48	ssize_t result;
47	mode_t mode; /* open */	49	mode_t mode; /* open */
48	int errorno;	50	int errorno;
49	SV data, callback, *fh;	51	SV data, callback, *fh;
50	void *dataptr;	52	void dataptr, data2ptr;
51	STRLEN dataoffset;	53	STRLEN dataoffset;
52		54
53	Stat_t *statdata;	55	Stat_t *statdata;
54	} aio_cb;	56	} aio_cb;
55		57
…		…
60	static int max_outstanding = 1<<30;	62	static int max_outstanding = 1<<30;
61	static int respipe [2];	63	static int respipe [2];
62		64
63	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	65	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;
64	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;
65	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	68	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
66		69
67	static volatile aio_req reqs, reqe; /* queue start, queue end */	70	static volatile aio_req reqs, reqe; /* queue start, queue end */
68	static volatile aio_req ress, rese; /* queue start, queue end */	71	static volatile aio_req ress, rese; /* queue start, queue end */
69		72
…		…
90	pthread_mutex_lock (&reslock);	93	pthread_mutex_lock (&reslock);
91		94
92	{	95	{
93	/* read any signals sent by the worker threads */	96	/* read any signals sent by the worker threads */
94	char buf [32];	97	char buf [32];
95	while (read (respipe [0], buf, 32) > 0)	98	while (read (respipe [0], buf, 32) == 32)
96	;	99	;
97	}	100	}
98		101
99	req = ress;	102	req = ress;
100	ress = rese = 0;	103	ress = rese = 0;
…		…
233	req->type = REQ_QUIT;	236	req->type = REQ_QUIT;
234		237
235	send_req (req);	238	send_req (req);
236	}	239	}
237		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
238	static void *	388	static void *
239	aio_proc (void *thr_arg)	389	aio_proc (void *thr_arg)
240	{	390	{
241	aio_req req;	391	aio_req req;
242	int type;	392	int type;
…		…
269		419
270	switch (type)	420	switch (type)
271	{	421	{
272	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;
273	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;
274	#if SYS_readahead	424
275	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;
276	#else
277	case REQ_READAHEAD: req->result = -1; errno = ENOSYS; break;
278	#endif
279		426
280	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	427	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
281	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	428	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
282	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	429	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
283		430
284	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;
285	case REQ_CLOSE: req->result = close (req->fd); break;	432	case REQ_CLOSE: req->result = close (req->fd); break;
286	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;
287		436
		437	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
288	case REQ_FSYNC: req->result = fsync (req->fd); break;	438	case REQ_FSYNC: req->result = fsync (req->fd); break;
289	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
290		439
291	case REQ_QUIT:	440	case REQ_QUIT:
292	break;	441	break;
293		442
294	default:	443	default:
…		…
320	while (type != REQ_QUIT);	469	while (type != REQ_QUIT);
321		470
322	return 0;	471	return 0;
323	}	472	}
324		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
325	MODULE = IO::AIO PACKAGE = IO::AIO	486	MODULE = IO::AIO PACKAGE = IO::AIO
326		487
327	PROTOTYPES: ENABLE	488	PROTOTYPES: ENABLE
328		489
329	BOOT:	490	BOOT:
…		…
334	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))	495	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
335	croak ("cannot set result pipe to nonblocking mode");	496	croak ("cannot set result pipe to nonblocking mode");
336		497
337	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))	498	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
338	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);
339	}	502	}
340		503
341	void	504	void
342	min_parallel(nthreads)	505	min_parallel(nthreads)
343	int nthreads	506	int nthreads
344	PROTOTYPE: $	507	PROTOTYPE: $
345	CODE:
346	while (nthreads > started)
347	start_thread ();
348		508
349	void	509	void
350	max_parallel(nthreads)	510	max_parallel(nthreads)
351	int nthreads	511	int nthreads
352	PROTOTYPE: $	512	PROTOTYPE: $
353	CODE:
354	{
355	int cur = started;
356	while (cur > nthreads)
357	{
358	end_thread ();
359	cur--;
360	}
361
362	while (started > nthreads)
363	{
364	poll_wait ();
365	poll_cb ();
366	}
367	}
368		513
369	int	514	int
370	max_outstanding(nreqs)	515	max_outstanding(nreqs)
371	int nreqs	516	int nreqs
372	PROTOTYPE: $	517	PROTOTYPE: $
…		…
381	int mode	526	int mode
382	SV * callback	527	SV * callback
383	PROTOTYPE: $$$;$	528	PROTOTYPE: $$$;$
384	CODE:	529	CODE:
385	{	530	{
386	aio_req req;	531	dREQ;
387
388	Newz (0, req, 1, aio_cb);
389
390	if (!req)
391	croak ("out of memory during aio_req allocation");
392		532
393	req->type = REQ_OPEN;	533	req->type = REQ_OPEN;
394	req->data = newSVsv (pathname);	534	req->data = newSVsv (pathname);
395	req->dataptr = SvPV_nolen (req->data);	535	req->dataptr = SvPVbyte_nolen (req->data);
396	req->fd = flags;	536	req->fd = flags;
397	req->mode = mode;	537	req->mode = mode;
398	req->callback = SvREFCNT_inc (callback);
399		538
400	send_req (req);	539	send_req (req);
401	}	540	}
402		541
403	void	542	void
…		…
409	aio_close = REQ_CLOSE	548	aio_close = REQ_CLOSE
410	aio_fsync = REQ_FSYNC	549	aio_fsync = REQ_FSYNC
411	aio_fdatasync = REQ_FDATASYNC	550	aio_fdatasync = REQ_FDATASYNC
412	CODE:	551	CODE:
413	{	552	{
414	aio_req req;	553	dREQ;
415
416	Newz (0, req, 1, aio_cb);
417
418	if (!req)
419	croak ("out of memory during aio_req allocation");
420		554
421	req->type = ix;	555	req->type = ix;
422	req->fh = newSVsv (fh);	556	req->fh = newSVsv (fh);
423	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	557	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
424	req->callback = SvREFCNT_inc (callback);
425		558
426	send_req (req);	559	send_req (req);
427	}	560	}
428		561
429	void	562	void
…		…
440	PROTOTYPE: $$$$$;$	573	PROTOTYPE: $$$$$;$
441	CODE:	574	CODE:
442	{	575	{
443	aio_req req;	576	aio_req req;
444	STRLEN svlen;	577	STRLEN svlen;
445	char *svptr = SvPV (data, svlen);	578	char *svptr = SvPVbyte (data, svlen);
446		579
447	SvUPGRADE (data, SVt_PV);	580	SvUPGRADE (data, SVt_PV);
448	SvPOK_on (data);	581	SvPOK_on (data);
449		582
450	if (dataoffset < 0)	583	if (dataoffset < 0)
…		…
466	}	599	}
467		600
468	if (length < 0)	601	if (length < 0)
469	croak ("length must not be negative");	602	croak ("length must not be negative");
470		603
471	Newz (0, req, 1, aio_cb);	604	{
		605	dREQ;
472		606
473	if (!req)
474	croak ("out of memory during aio_req allocation");
475
476	req->type = ix;	607	req->type = ix;
477	req->fh = newSVsv (fh);	608	req->fh = newSVsv (fh);
478	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	609	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
479	: IoOFP (sv_2io (fh)));	610	: IoOFP (sv_2io (fh)));
480	req->offset = offset;	611	req->offset = offset;
481	req->length = length;	612	req->length = length;
482	req->data = SvREFCNT_inc (data);	613	req->data = SvREFCNT_inc (data);
483	req->dataptr = (char *)svptr + dataoffset;	614	req->dataptr = (char *)svptr + dataoffset;
484	req->callback = SvREFCNT_inc (callback);	615	req->callback = SvREFCNT_inc (callback);
485		616
486	send_req (req);	617	send_req (req);
		618	}
487	}	619	}
488		620
489	void	621	void
490	aio_readahead(fh,offset,length,callback=&PL_sv_undef)	622	aio_readahead(fh,offset,length,callback=&PL_sv_undef)
491	SV * fh	623	SV * fh
…		…
493	IV length	625	IV length
494	SV * callback	626	SV * callback
495	PROTOTYPE: $$$;$	627	PROTOTYPE: $$$;$
496	CODE:	628	CODE:
497	{	629	{
498	aio_req req;	630	dREQ;
499
500	if (length < 0)
501	croak ("length must not be negative");
502
503	Newz (0, req, 1, aio_cb);
504
505	if (!req)
506	croak ("out of memory during aio_req allocation");
507		631
508	req->type = REQ_READAHEAD;	632	req->type = REQ_READAHEAD;
509	req->fh = newSVsv (fh);	633	req->fh = newSVsv (fh);
510	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	634	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
511	req->offset = offset;	635	req->offset = offset;
512	req->length = length;	636	req->length = length;
513	req->callback = SvREFCNT_inc (callback);
514		637
515	send_req (req);	638	send_req (req);
516	}	639	}
517		640
518	void	641	void
…		…
522	ALIAS:	645	ALIAS:
523	aio_stat = REQ_STAT	646	aio_stat = REQ_STAT
524	aio_lstat = REQ_LSTAT	647	aio_lstat = REQ_LSTAT
525	CODE:	648	CODE:
526	{	649	{
527	aio_req req;	650	dREQ;
528
529	Newz (0, req, 1, aio_cb);
530
531	if (!req)
532	croak ("out of memory during aio_req allocation");
533		651
534	New (0, req->statdata, 1, Stat_t);	652	New (0, req->statdata, 1, Stat_t);
535
536	if (!req->statdata)	653	if (!req->statdata)
537	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)");
538		655
539	if (SvPOK (fh_or_path))	656	if (SvPOK (fh_or_path))
540	{	657	{
541	req->type = ix;	658	req->type = ix;
542	req->data = newSVsv (fh_or_path);	659	req->data = newSVsv (fh_or_path);
543	req->dataptr = SvPV_nolen (req->data);	660	req->dataptr = SvPVbyte_nolen (req->data);
544	}	661	}
545	else	662	else
546	{	663	{
547	req->type = REQ_FSTAT;	664	req->type = REQ_FSTAT;
548	req->fh = newSVsv (fh_or_path);	665	req->fh = newSVsv (fh_or_path);
549	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	666	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
550	}	667	}
551		668
552	req->callback = SvREFCNT_inc (callback);
553
554	send_req (req);	669	send_req (req);
555	}	670	}
556		671
557	void	672	void
558	aio_unlink(pathname,callback=&PL_sv_undef)	673	aio_unlink(pathname,callback=&PL_sv_undef)
559	SV * pathname	674	SV * pathname
560	SV * callback	675	SV * callback
		676	ALIAS:
		677	aio_unlink = REQ_UNLINK
		678	aio_rmdir = REQ_RMDIR
561	CODE:	679	CODE:
562	{	680	{
563	aio_req req;	681	dREQ;
564		682
565	Newz (0, req, 1, aio_cb);	683	req->type = ix;
		684	req->data = newSVsv (pathname);
		685	req->dataptr = SvPVbyte_nolen (req->data);
566		686
567	if (!req)	687	send_req (req);
568	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;
569		698
570	req->type = REQ_UNLINK;	699	req->type = REQ_SYMLINK;
		700	req->fh = newSVsv (oldpath);
		701	req->data2ptr = SvPVbyte_nolen (req->fh);
571	req->data = newSVsv (pathname);	702	req->data = newSVsv (newpath);
572	req->dataptr = SvPV_nolen (req->data);	703	req->dataptr = SvPVbyte_nolen (req->data);
573	req->callback = SvREFCNT_inc (callback);
574		704
575	send_req (req);	705	send_req (req);
576	}	706	}
577		707
578	void	708	void

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Comparing IO-AIO/AIO.xs (file contents): Revision 1.13 by root, Fri Jul 22 08:25:22 2005 UTC vs. Revision 1.22 by root, Tue Aug 16 22:22:18 2005 UTC

Diff Legend

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.13 by root, Fri Jul 22 08:25:22 2005 UTC vs.
Revision 1.22 by root, Tue Aug 16 22:22:18 2005 UTC