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

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.14 by root, Sat Jul 23 18:15:36 2005 UTC vs.
Revision 1.22 by root, Tue Aug 16 22:22:18 2005 UTC

…		…
		1	#define _REENTRANT 1
		2	#include <errno.h>
		3
		4	#include "EXTERN.h"
1	#include "perl.h"	5	#include "perl.h"
2	#include "XSUB.h"	6	#include "XSUB.h"
		7
		8	#include "autoconf/config.h"
3		9
4	#include <sys/types.h>	10	#include <sys/types.h>
5	#include <sys/stat.h>	11	#include <sys/stat.h>
6		12
7	#include <unistd.h>	13	#include <unistd.h>
8	#include <fcntl.h>	14	#include <fcntl.h>
9	#include <signal.h>	15	#include <signal.h>
10	#include <sched.h>	16	#include <sched.h>
11	#if __linux
12	#include <sys/syscall.h>
13	#endif
14		17
15	#include <pthread.h>	18	#include <pthread.h>
16		19
17	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 ;) */
18	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 ;) */
26		29
27	enum {	30	enum {
28	REQ_QUIT,	31	REQ_QUIT,
29	REQ_OPEN, REQ_CLOSE,	32	REQ_OPEN, REQ_CLOSE,
30	REQ_READ, REQ_WRITE, REQ_READAHEAD,	33	REQ_READ, REQ_WRITE, REQ_READAHEAD,
31	REQ_STAT, REQ_LSTAT, REQ_FSTAT, REQ_UNLINK,	34	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
32	REQ_FSYNC, REQ_FDATASYNC,	35	REQ_FSYNC, REQ_FDATASYNC,
		36	REQ_UNLINK, REQ_RMDIR, REQ_SYMLINK,
		37	REQ_SYMLINK,
33	};	38	};
34		39
35	typedef struct aio_cb {	40	typedef struct aio_cb {
36	struct aio_cb *volatile next;	41	struct aio_cb *volatile next;
37		42
…		…
42	size_t length;	47	size_t length;
43	ssize_t result;	48	ssize_t result;
44	mode_t mode; /* open */	49	mode_t mode; /* open */
45	int errorno;	50	int errorno;
46	SV data, callback, *fh;	51	SV data, callback, *fh;
47	void *dataptr;	52	void dataptr, data2ptr;
48	STRLEN dataoffset;	53	STRLEN dataoffset;
49		54
50	Stat_t *statdata;	55	Stat_t *statdata;
51	} aio_cb;	56	} aio_cb;
52		57
…		…
57	static int max_outstanding = 1<<30;	62	static int max_outstanding = 1<<30;
58	static int respipe [2];	63	static int respipe [2];
59		64
60	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	65	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;
61	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;
62	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	68	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
63		69
64	static volatile aio_req reqs, reqe; /* queue start, queue end */	70	static volatile aio_req reqs, reqe; /* queue start, queue end */
65	static volatile aio_req ress, rese; /* queue start, queue end */	71	static volatile aio_req ress, rese; /* queue start, queue end */
66		72
…		…
87	pthread_mutex_lock (&reslock);	93	pthread_mutex_lock (&reslock);
88		94
89	{	95	{
90	/* read any signals sent by the worker threads */	96	/* read any signals sent by the worker threads */
91	char buf [32];	97	char buf [32];
92	while (read (respipe [0], buf, 32) > 0)	98	while (read (respipe [0], buf, 32) == 32)
93	;	99	;
94	}	100	}
95		101
96	req = ress;	102	req = ress;
97	ress = rese = 0;	103	ress = rese = 0;
…		…
230	req->type = REQ_QUIT;	236	req->type = REQ_QUIT;
231		237
232	send_req (req);	238	send_req (req);
233	}	239	}
234		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
235	static void *	388	static void *
236	aio_proc (void *thr_arg)	389	aio_proc (void *thr_arg)
237	{	390	{
238	aio_req req;	391	aio_req req;
239	int type;	392	int type;
…		…
266		419
267	switch (type)	420	switch (type)
268	{	421	{
269	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;
270	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;
271	#if SYS_readahead	424
272	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;
273	#else
274	case REQ_READAHEAD: req->result = -1; errno = ENOSYS; break;
275	#endif
276		426
277	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	427	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
278	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	428	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
279	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	429	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
280		430
281	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;
282	case REQ_CLOSE: req->result = close (req->fd); break;	432	case REQ_CLOSE: req->result = close (req->fd); break;
283	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;
284		436
		437	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
285	case REQ_FSYNC: req->result = fsync (req->fd); break;	438	case REQ_FSYNC: req->result = fsync (req->fd); break;
286	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
287		439
288	case REQ_QUIT:	440	case REQ_QUIT:
289	break;	441	break;
290		442
291	default:	443	default:
…		…
317	while (type != REQ_QUIT);	469	while (type != REQ_QUIT);
318		470
319	return 0;	471	return 0;
320	}	472	}
321		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
322	MODULE = IO::AIO PACKAGE = IO::AIO	486	MODULE = IO::AIO PACKAGE = IO::AIO
323		487
324	PROTOTYPES: ENABLE	488	PROTOTYPES: ENABLE
325		489
326	BOOT:	490	BOOT:
…		…
331	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))	495	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
332	croak ("cannot set result pipe to nonblocking mode");	496	croak ("cannot set result pipe to nonblocking mode");
333		497
334	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))	498	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
335	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);
336	}	502	}
337		503
338	void	504	void
339	min_parallel(nthreads)	505	min_parallel(nthreads)
340	int nthreads	506	int nthreads
341	PROTOTYPE: $	507	PROTOTYPE: $
342	CODE:
343	while (nthreads > started)
344	start_thread ();
345		508
346	void	509	void
347	max_parallel(nthreads)	510	max_parallel(nthreads)
348	int nthreads	511	int nthreads
349	PROTOTYPE: $	512	PROTOTYPE: $
350	CODE:
351	{
352	int cur = started;
353	while (cur > nthreads)
354	{
355	end_thread ();
356	cur--;
357	}
358
359	while (started > nthreads)
360	{
361	poll_wait ();
362	poll_cb ();
363	}
364	}
365		513
366	int	514	int
367	max_outstanding(nreqs)	515	max_outstanding(nreqs)
368	int nreqs	516	int nreqs
369	PROTOTYPE: $	517	PROTOTYPE: $
…		…
378	int mode	526	int mode
379	SV * callback	527	SV * callback
380	PROTOTYPE: $$$;$	528	PROTOTYPE: $$$;$
381	CODE:	529	CODE:
382	{	530	{
383	aio_req req;	531	dREQ;
384
385	Newz (0, req, 1, aio_cb);
386
387	if (!req)
388	croak ("out of memory during aio_req allocation");
389		532
390	req->type = REQ_OPEN;	533	req->type = REQ_OPEN;
391	req->data = newSVsv (pathname);	534	req->data = newSVsv (pathname);
392	req->dataptr = SvPV_nolen (req->data);	535	req->dataptr = SvPVbyte_nolen (req->data);
393	req->fd = flags;	536	req->fd = flags;
394	req->mode = mode;	537	req->mode = mode;
395	req->callback = SvREFCNT_inc (callback);
396		538
397	send_req (req);	539	send_req (req);
398	}	540	}
399		541
400	void	542	void
…		…
406	aio_close = REQ_CLOSE	548	aio_close = REQ_CLOSE
407	aio_fsync = REQ_FSYNC	549	aio_fsync = REQ_FSYNC
408	aio_fdatasync = REQ_FDATASYNC	550	aio_fdatasync = REQ_FDATASYNC
409	CODE:	551	CODE:
410	{	552	{
411	aio_req req;	553	dREQ;
412
413	Newz (0, req, 1, aio_cb);
414
415	if (!req)
416	croak ("out of memory during aio_req allocation");
417		554
418	req->type = ix;	555	req->type = ix;
419	req->fh = newSVsv (fh);	556	req->fh = newSVsv (fh);
420	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	557	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
421	req->callback = SvREFCNT_inc (callback);
422		558
423	send_req (req);	559	send_req (req);
424	}	560	}
425		561
426	void	562	void
…		…
437	PROTOTYPE: $$$$$;$	573	PROTOTYPE: $$$$$;$
438	CODE:	574	CODE:
439	{	575	{
440	aio_req req;	576	aio_req req;
441	STRLEN svlen;	577	STRLEN svlen;
442	char *svptr = SvPV (data, svlen);	578	char *svptr = SvPVbyte (data, svlen);
443		579
444	SvUPGRADE (data, SVt_PV);	580	SvUPGRADE (data, SVt_PV);
445	SvPOK_on (data);	581	SvPOK_on (data);
446		582
447	if (dataoffset < 0)	583	if (dataoffset < 0)
…		…
463	}	599	}
464		600
465	if (length < 0)	601	if (length < 0)
466	croak ("length must not be negative");	602	croak ("length must not be negative");
467		603
468	Newz (0, req, 1, aio_cb);	604	{
		605	dREQ;
469		606
470	if (!req)
471	croak ("out of memory during aio_req allocation");
472
473	req->type = ix;	607	req->type = ix;
474	req->fh = newSVsv (fh);	608	req->fh = newSVsv (fh);
475	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	609	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
476	: IoOFP (sv_2io (fh)));	610	: IoOFP (sv_2io (fh)));
477	req->offset = offset;	611	req->offset = offset;
478	req->length = length;	612	req->length = length;
479	req->data = SvREFCNT_inc (data);	613	req->data = SvREFCNT_inc (data);
480	req->dataptr = (char *)svptr + dataoffset;	614	req->dataptr = (char *)svptr + dataoffset;
481	req->callback = SvREFCNT_inc (callback);	615	req->callback = SvREFCNT_inc (callback);
482		616
483	send_req (req);	617	send_req (req);
		618	}
484	}	619	}
485		620
486	void	621	void
487	aio_readahead(fh,offset,length,callback=&PL_sv_undef)	622	aio_readahead(fh,offset,length,callback=&PL_sv_undef)
488	SV * fh	623	SV * fh
…		…
490	IV length	625	IV length
491	SV * callback	626	SV * callback
492	PROTOTYPE: $$$;$	627	PROTOTYPE: $$$;$
493	CODE:	628	CODE:
494	{	629	{
495	aio_req req;	630	dREQ;
496
497	if (length < 0)
498	croak ("length must not be negative");
499
500	Newz (0, req, 1, aio_cb);
501
502	if (!req)
503	croak ("out of memory during aio_req allocation");
504		631
505	req->type = REQ_READAHEAD;	632	req->type = REQ_READAHEAD;
506	req->fh = newSVsv (fh);	633	req->fh = newSVsv (fh);
507	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	634	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
508	req->offset = offset;	635	req->offset = offset;
509	req->length = length;	636	req->length = length;
510	req->callback = SvREFCNT_inc (callback);
511		637
512	send_req (req);	638	send_req (req);
513	}	639	}
514		640
515	void	641	void
…		…
519	ALIAS:	645	ALIAS:
520	aio_stat = REQ_STAT	646	aio_stat = REQ_STAT
521	aio_lstat = REQ_LSTAT	647	aio_lstat = REQ_LSTAT
522	CODE:	648	CODE:
523	{	649	{
524	aio_req req;	650	dREQ;
525
526	Newz (0, req, 1, aio_cb);
527
528	if (!req)
529	croak ("out of memory during aio_req allocation");
530		651
531	New (0, req->statdata, 1, Stat_t);	652	New (0, req->statdata, 1, Stat_t);
532
533	if (!req->statdata)	653	if (!req->statdata)
534	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)");
535		655
536	if (SvPOK (fh_or_path))	656	if (SvPOK (fh_or_path))
537	{	657	{
538	req->type = ix;	658	req->type = ix;
539	req->data = newSVsv (fh_or_path);	659	req->data = newSVsv (fh_or_path);
540	req->dataptr = SvPV_nolen (req->data);	660	req->dataptr = SvPVbyte_nolen (req->data);
541	}	661	}
542	else	662	else
543	{	663	{
544	req->type = REQ_FSTAT;	664	req->type = REQ_FSTAT;
545	req->fh = newSVsv (fh_or_path);	665	req->fh = newSVsv (fh_or_path);
546	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	666	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
547	}	667	}
548		668
549	req->callback = SvREFCNT_inc (callback);
550
551	send_req (req);	669	send_req (req);
552	}	670	}
553		671
554	void	672	void
555	aio_unlink(pathname,callback=&PL_sv_undef)	673	aio_unlink(pathname,callback=&PL_sv_undef)
556	SV * pathname	674	SV * pathname
557	SV * callback	675	SV * callback
		676	ALIAS:
		677	aio_unlink = REQ_UNLINK
		678	aio_rmdir = REQ_RMDIR
558	CODE:	679	CODE:
559	{	680	{
560	aio_req req;	681	dREQ;
561		682
562	Newz (0, req, 1, aio_cb);	683	req->type = ix;
		684	req->data = newSVsv (pathname);
		685	req->dataptr = SvPVbyte_nolen (req->data);
563		686
564	if (!req)	687	send_req (req);
565	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;
566		698
567	req->type = REQ_UNLINK;	699	req->type = REQ_SYMLINK;
		700	req->fh = newSVsv (oldpath);
		701	req->data2ptr = SvPVbyte_nolen (req->fh);
568	req->data = newSVsv (pathname);	702	req->data = newSVsv (newpath);
569	req->dataptr = SvPV_nolen (req->data);	703	req->dataptr = SvPVbyte_nolen (req->data);
570	req->callback = SvREFCNT_inc (callback);
571		704
572	send_req (req);	705	send_req (req);
573	}	706	}
574		707
575	void	708	void

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Comparing IO-AIO/AIO.xs (file contents): Revision 1.14 by root, Sat Jul 23 18:15:36 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 1.14 by root, Sat Jul 23 18:15:36 2005 UTC vs.
Revision 1.22 by root, Tue Aug 16 22:22:18 2005 UTC