[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 1.24 by root, Wed Aug 17 03:01:56 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,
		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
…		…
83	static int	86	static int
84	poll_cb ()	87	poll_cb ()
85	{	88	{
86	dSP;	89	dSP;
87	int count = 0;	90	int count = 0;
		91	int do_croak = 0;
88	aio_req req, prv;	92	aio_req req, prv;
89		93
90	pthread_mutex_lock (&reslock);	94	pthread_mutex_lock (&reslock);
91		95
92	{	96	{
93	/* read any signals sent by the worker threads */	97	/* read any signals sent by the worker threads */
94	char buf [32];	98	char buf [32];
95	while (read (respipe [0], buf, 32) > 0)	99	while (read (respipe [0], buf, 32) == 32)
96	;	100	;
97	}	101	}
98		102
99	req = ress;	103	req = ress;
100	ress = rese = 0;	104	ress = rese = 0;
…		…
155	PUTBACK;	159	PUTBACK;
156	call_sv (req->callback, G_VOID \| G_EVAL);	160	call_sv (req->callback, G_VOID \| G_EVAL);
157	SPAGAIN;	161	SPAGAIN;
158	}	162	}
159		163
		164	do_croak = SvTRUE (ERRSV);
		165
160	LEAVE;	166	LEAVE;
161		167
162	if (req->callback)	168	if (req->callback)
163	SvREFCNT_dec (req->callback);	169	SvREFCNT_dec (req->callback);
164		170
…		…
168		174
169	prv = req;	175	prv = req;
170	req = req->next;	176	req = req->next;
171	Safefree (prv);	177	Safefree (prv);
172		178
173	/* TODO: croak on errors? */	179	if (do_croak)
		180	croak (0);
174	}	181	}
175		182
176	return count;	183	return count;
177	}	184	}
178		185
…		…
233	req->type = REQ_QUIT;	240	req->type = REQ_QUIT;
234		241
235	send_req (req);	242	send_req (req);
236	}	243	}
237		244
		245
		246	static void min_parallel (int nthreads)
		247	{
		248	while (nthreads > started)
		249	start_thread ();
		250	}
		251
		252	static void max_parallel (int nthreads)
		253	{
		254	int cur = started;
		255	while (cur > nthreads)
		256	{
		257	end_thread ();
		258	cur--;
		259	}
		260
		261	while (started > nthreads)
		262	{
		263	poll_wait ();
		264	poll_cb ();
		265	}
		266	}
		267
		268	static int fork_started;
		269
		270	static void atfork_prepare (void)
		271	{
		272	pthread_mutex_lock (&frklock);
		273
		274	fork_started = started;
		275
		276	for (;;) {
		277	while (nreqs)
		278	{
		279	poll_wait ();
		280	poll_cb ();
		281	}
		282
		283	max_parallel (0);
		284
		285	pthread_mutex_lock (&reqlock);
		286
		287	if (!nreqs && !started)
		288	break;
		289
		290	pthread_mutex_unlock (&reqlock);
		291
		292	min_parallel (fork_started);
		293	}
		294
		295	pthread_mutex_lock (&reslock);
		296
		297	assert (!started);
		298	assert (!nreqs);
		299	assert (!reqs && !reqe);
		300	assert (!ress && !rese);
		301	}
		302
		303	static void atfork_parent (void)
		304	{
		305	pthread_mutex_unlock (&reslock);
		306	min_parallel (fork_started);
		307	pthread_mutex_unlock (&reqlock);
		308	pthread_mutex_unlock (&frklock);
		309	}
		310
		311	static void atfork_child (void)
		312	{
		313	reqs = reqe = 0;
		314
		315	atfork_parent ();
		316	}
		317
		318	/*****************************************************************************/
		319	/* work around various missing functions */
		320
		321	#if !HAVE_PREADWRITE
		322	# define pread aio_pread
		323	# define pwrite aio_pwrite
		324
		325	/*
		326	* make our pread/pwrite safe against themselves, but not against
		327	* normal read/write by using a mutex. slows down execution a lot,
		328	* but that's your problem, not mine.
		329	*/
		330	static pthread_mutex_t iolock = PTHREAD_MUTEX_INITIALIZER;
		331
		332	static ssize_t
		333	pread (int fd, void *buf, size_t count, off_t offset)
		334	{
		335	ssize_t res;
		336	off_t ooffset;
		337
		338	pthread_mutex_lock (&iolock);
		339	ooffset = lseek (fd, 0, SEEK_CUR);
		340	lseek (fd, offset, SEEK_SET);
		341	res = read (fd, buf, count);
		342	lseek (fd, ooffset, SEEK_SET);
		343	pthread_mutex_unlock (&iolock);
		344
		345	return res;
		346	}
		347
		348	static ssize_t
		349	pwrite (int fd, void *buf, size_t count, off_t offset)
		350	{
		351	ssize_t res;
		352	off_t ooffset;
		353
		354	pthread_mutex_lock (&iolock);
		355	ooffset = lseek (fd, 0, SEEK_CUR);
		356	lseek (fd, offset, SEEK_SET);
		357	res = write (fd, buf, count);
		358	lseek (fd, offset, SEEK_SET);
		359	pthread_mutex_unlock (&iolock);
		360
		361	return res;
		362	}
		363	#endif
		364
		365	#if !HAVE_FDATASYNC
		366	# define fdatasync fsync
		367	#endif
		368
		369	#if !HAVE_READAHEAD
		370	# define readahead aio_readahead
		371
		372	static char readahead_buf[4096];
		373
		374	static ssize_t
		375	readahead (int fd, off_t offset, size_t count)
		376	{
		377	while (count > 0)
		378	{
		379	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
		380
		381	pread (fd, readahead_buf, len, offset);
		382	offset += len;
		383	count -= len;
		384	}
		385
		386	errno = 0;
		387	}
		388	#endif
		389
		390	/*****************************************************************************/
		391
238	static void *	392	static void *
239	aio_proc (void *thr_arg)	393	aio_proc (void *thr_arg)
240	{	394	{
241	aio_req req;	395	aio_req req;
242	int type;	396	int type;
…		…
269		423
270	switch (type)	424	switch (type)
271	{	425	{
272	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;	426	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;	427	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
274	#if SYS_readahead	428
275	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	429	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		430
280	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	431	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
281	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	432	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
282	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	433	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
283		434
284	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;	435	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
285	case REQ_CLOSE: req->result = close (req->fd); break;	436	case REQ_CLOSE: req->result = close (req->fd); break;
286	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	437	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
		438	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
		439	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
287		440
		441	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
288	case REQ_FSYNC: req->result = fsync (req->fd); break;	442	case REQ_FSYNC: req->result = fsync (req->fd); break;
289	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
290		443
291	case REQ_QUIT:	444	case REQ_QUIT:
292	break;	445	break;
293		446
294	default:	447	default:
…		…
320	while (type != REQ_QUIT);	473	while (type != REQ_QUIT);
321		474
322	return 0;	475	return 0;
323	}	476	}
324		477
		478	#define dREQ \
		479	aio_req req; \
		480	\
		481	if (SvOK (callback) && !SvROK (callback)) \
		482	croak ("clalback must be undef or of reference type"); \
		483	\
		484	Newz (0, req, 1, aio_cb); \
		485	if (!req) \
		486	croak ("out of memory during aio_req allocation"); \
		487	\
		488	req->callback = SvREFCNT_inc (callback);
		489
325	MODULE = IO::AIO PACKAGE = IO::AIO	490	MODULE = IO::AIO PACKAGE = IO::AIO
326		491
327	PROTOTYPES: ENABLE	492	PROTOTYPES: ENABLE
328		493
329	BOOT:	494	BOOT:
…		…
334	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))	499	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
335	croak ("cannot set result pipe to nonblocking mode");	500	croak ("cannot set result pipe to nonblocking mode");
336		501
337	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))	502	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
338	croak ("cannot set result pipe to nonblocking mode");	503	croak ("cannot set result pipe to nonblocking mode");
		504
		505	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
339	}	506	}
340		507
341	void	508	void
342	min_parallel(nthreads)	509	min_parallel(nthreads)
343	int nthreads	510	int nthreads
344	PROTOTYPE: $	511	PROTOTYPE: $
345	CODE:
346	while (nthreads > started)
347	start_thread ();
348		512
349	void	513	void
350	max_parallel(nthreads)	514	max_parallel(nthreads)
351	int nthreads	515	int nthreads
352	PROTOTYPE: $	516	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		517
369	int	518	int
370	max_outstanding(nreqs)	519	max_outstanding(nreqs)
371	int nreqs	520	int nreqs
372	PROTOTYPE: $	521	PROTOTYPE: $
…		…
381	int mode	530	int mode
382	SV * callback	531	SV * callback
383	PROTOTYPE: $$$;$	532	PROTOTYPE: $$$;$
384	CODE:	533	CODE:
385	{	534	{
386	aio_req req;	535	dREQ;
387
388	Newz (0, req, 1, aio_cb);
389
390	if (!req)
391	croak ("out of memory during aio_req allocation");
392		536
393	req->type = REQ_OPEN;	537	req->type = REQ_OPEN;
394	req->data = newSVsv (pathname);	538	req->data = newSVsv (pathname);
395	req->dataptr = SvPV_nolen (req->data);	539	req->dataptr = SvPVbyte_nolen (req->data);
396	req->fd = flags;	540	req->fd = flags;
397	req->mode = mode;	541	req->mode = mode;
398	req->callback = SvREFCNT_inc (callback);
399		542
400	send_req (req);	543	send_req (req);
401	}	544	}
402		545
403	void	546	void
…		…
409	aio_close = REQ_CLOSE	552	aio_close = REQ_CLOSE
410	aio_fsync = REQ_FSYNC	553	aio_fsync = REQ_FSYNC
411	aio_fdatasync = REQ_FDATASYNC	554	aio_fdatasync = REQ_FDATASYNC
412	CODE:	555	CODE:
413	{	556	{
414	aio_req req;	557	dREQ;
415
416	Newz (0, req, 1, aio_cb);
417
418	if (!req)
419	croak ("out of memory during aio_req allocation");
420		558
421	req->type = ix;	559	req->type = ix;
422	req->fh = newSVsv (fh);	560	req->fh = newSVsv (fh);
423	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	561	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
424	req->callback = SvREFCNT_inc (callback);
425		562
426	send_req (req);	563	send_req (req);
427	}	564	}
428		565
429	void	566	void
…		…
440	PROTOTYPE: $$$$$;$	577	PROTOTYPE: $$$$$;$
441	CODE:	578	CODE:
442	{	579	{
443	aio_req req;	580	aio_req req;
444	STRLEN svlen;	581	STRLEN svlen;
445	char *svptr = SvPV (data, svlen);	582	char *svptr = SvPVbyte (data, svlen);
446		583
447	SvUPGRADE (data, SVt_PV);	584	SvUPGRADE (data, SVt_PV);
448	SvPOK_on (data);	585	SvPOK_on (data);
449		586
450	if (dataoffset < 0)	587	if (dataoffset < 0)
…		…
466	}	603	}
467		604
468	if (length < 0)	605	if (length < 0)
469	croak ("length must not be negative");	606	croak ("length must not be negative");
470		607
471	Newz (0, req, 1, aio_cb);	608	{
		609	dREQ;
472		610
473	if (!req)
474	croak ("out of memory during aio_req allocation");
475
476	req->type = ix;	611	req->type = ix;
477	req->fh = newSVsv (fh);	612	req->fh = newSVsv (fh);
478	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	613	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
479	: IoOFP (sv_2io (fh)));	614	: IoOFP (sv_2io (fh)));
480	req->offset = offset;	615	req->offset = offset;
481	req->length = length;	616	req->length = length;
482	req->data = SvREFCNT_inc (data);	617	req->data = SvREFCNT_inc (data);
483	req->dataptr = (char *)svptr + dataoffset;	618	req->dataptr = (char *)svptr + dataoffset;
484	req->callback = SvREFCNT_inc (callback);	619	req->callback = SvREFCNT_inc (callback);
485		620
486	send_req (req);	621	send_req (req);
		622	}
487	}	623	}
488		624
489	void	625	void
490	aio_readahead(fh,offset,length,callback=&PL_sv_undef)	626	aio_readahead(fh,offset,length,callback=&PL_sv_undef)
491	SV * fh	627	SV * fh
…		…
493	IV length	629	IV length
494	SV * callback	630	SV * callback
495	PROTOTYPE: $$$;$	631	PROTOTYPE: $$$;$
496	CODE:	632	CODE:
497	{	633	{
498	aio_req req;	634	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		635
508	req->type = REQ_READAHEAD;	636	req->type = REQ_READAHEAD;
509	req->fh = newSVsv (fh);	637	req->fh = newSVsv (fh);
510	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	638	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
511	req->offset = offset;	639	req->offset = offset;
512	req->length = length;	640	req->length = length;
513	req->callback = SvREFCNT_inc (callback);
514		641
515	send_req (req);	642	send_req (req);
516	}	643	}
517		644
518	void	645	void
…		…
522	ALIAS:	649	ALIAS:
523	aio_stat = REQ_STAT	650	aio_stat = REQ_STAT
524	aio_lstat = REQ_LSTAT	651	aio_lstat = REQ_LSTAT
525	CODE:	652	CODE:
526	{	653	{
527	aio_req req;	654	dREQ;
528
529	Newz (0, req, 1, aio_cb);
530
531	if (!req)
532	croak ("out of memory during aio_req allocation");
533		655
534	New (0, req->statdata, 1, Stat_t);	656	New (0, req->statdata, 1, Stat_t);
535
536	if (!req->statdata)	657	if (!req->statdata)
537	croak ("out of memory during aio_req->statdata allocation");	658	croak ("out of memory during aio_req->statdata allocation (sorry, i just leaked memory, too)");
538		659
539	if (SvPOK (fh_or_path))	660	if (SvPOK (fh_or_path))
540	{	661	{
541	req->type = ix;	662	req->type = ix;
542	req->data = newSVsv (fh_or_path);	663	req->data = newSVsv (fh_or_path);
543	req->dataptr = SvPV_nolen (req->data);	664	req->dataptr = SvPVbyte_nolen (req->data);
544	}	665	}
545	else	666	else
546	{	667	{
547	req->type = REQ_FSTAT;	668	req->type = REQ_FSTAT;
548	req->fh = newSVsv (fh_or_path);	669	req->fh = newSVsv (fh_or_path);
549	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	670	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
550	}	671	}
551		672
552	req->callback = SvREFCNT_inc (callback);
553
554	send_req (req);	673	send_req (req);
555	}	674	}
556		675
557	void	676	void
558	aio_unlink(pathname,callback=&PL_sv_undef)	677	aio_unlink(pathname,callback=&PL_sv_undef)
559	SV * pathname	678	SV * pathname
560	SV * callback	679	SV * callback
		680	ALIAS:
		681	aio_unlink = REQ_UNLINK
		682	aio_rmdir = REQ_RMDIR
561	CODE:	683	CODE:
562	{	684	{
563	aio_req req;	685	dREQ;
564		686
565	Newz (0, req, 1, aio_cb);	687	req->type = ix;
		688	req->data = newSVsv (pathname);
		689	req->dataptr = SvPVbyte_nolen (req->data);
566		690
567	if (!req)	691	send_req (req);
568	croak ("out of memory during aio_req allocation");	692	}
		693
		694	void
		695	aio_symlink(oldpath,newpath,callback=&PL_sv_undef)
		696	SV * oldpath
		697	SV * newpath
		698	SV * callback
		699	CODE:
		700	{
		701	dREQ;
569		702
570	req->type = REQ_UNLINK;	703	req->type = REQ_SYMLINK;
		704	req->fh = newSVsv (oldpath);
		705	req->data2ptr = SvPVbyte_nolen (req->fh);
571	req->data = newSVsv (pathname);	706	req->data = newSVsv (newpath);
572	req->dataptr = SvPV_nolen (req->data);	707	req->dataptr = SvPVbyte_nolen (req->data);
573	req->callback = SvREFCNT_inc (callback);
574		708
575	send_req (req);	709	send_req (req);
576	}	710	}
577		711
578	void	712	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 1.24 by root, Wed Aug 17 03:01:56 2005 UTC

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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 1.24 by root, Wed Aug 17 03:01:56 2005 UTC