[ViewVC] Diff of: cvs/libeio/eio.c

Comparing libeio/eio.c (file contents):
Revision 1.127 by root, Mon Feb 18 03:15:19 2013 UTC vs.
Revision 1.150 by root, Fri Jun 15 02:57:36 2018 UTC

…		…
1	/*	1	/*
2	* libeio implementation	2	* libeio implementation
3	*	3	*
4	* Copyright (c) 2007,2008,2009,2010,2011,2012 Marc Alexander Lehmann <libeio@schmorp.de>	4	* Copyright (c) 2007,2008,2009,2010,2011,2012,2013,2016,2017 Marc Alexander Lehmann <libeio@schmorp.de>
5	* All rights reserved.	5	* All rights reserved.
6	*	6	*
7	* Redistribution and use in source and binary forms, with or without modifica-	7	* Redistribution and use in source and binary forms, with or without modifica-
8	* tion, are permitted provided that the following conditions are met:	8	* tion, are permitted provided that the following conditions are met:
9	*	9	*
42	#endif	42	#endif
43		43
44	#include "eio.h"	44	#include "eio.h"
45	#include "ecb.h"	45	#include "ecb.h"
46		46
47	#ifdef EIO_STACKSIZE
48	# define X_STACKSIZE EIO_STACKSIZE
49	#endif
50	#include "xthread.h"
51
52	#include <errno.h>	47	#include <errno.h>
53	#include <stddef.h>	48	#include <stddef.h>
54	#include <stdlib.h>	49	#include <stdlib.h>
55	#include <string.h>	50	#include <string.h>
56	#include <errno.h>	51	#include <errno.h>
…		…
120	#define link(old,neu) (CreateHardLink (neu, old, 0) ? 0 : EIO_ERRNO (ENOENT, -1))	115	#define link(old,neu) (CreateHardLink (neu, old, 0) ? 0 : EIO_ERRNO (ENOENT, -1))
121		116
122	#define chmod(path,mode) _chmod (path, mode)	117	#define chmod(path,mode) _chmod (path, mode)
123	#define dup(fd) _dup (fd)	118	#define dup(fd) _dup (fd)
124	#define dup2(fd1,fd2) _dup2 (fd1, fd2)	119	#define dup2(fd1,fd2) _dup2 (fd1, fd2)
		120	#define pipe(fds) _pipe (fds, 4096, O_BINARY)
125		121
		122	#define fcntl(fd,cmd,arg) EIO_ENOSYS ()
		123	#define ioctl(fd,cmd,arg) EIO_ENOSYS ()
126	#define fchmod(fd,mode) EIO_ENOSYS ()	124	#define fchmod(fd,mode) EIO_ENOSYS ()
127	#define chown(path,uid,gid) EIO_ENOSYS ()	125	#define chown(path,uid,gid) EIO_ENOSYS ()
128	#define fchown(fd,uid,gid) EIO_ENOSYS ()	126	#define fchown(fd,uid,gid) EIO_ENOSYS ()
129	#define truncate(path,offs) EIO_ENOSYS () /* far-miss: SetEndOfFile */	127	#define truncate(path,offs) EIO_ENOSYS () /* far-miss: SetEndOfFile */
130	#define ftruncate(fd,offs) EIO_ENOSYS () /* near-miss: SetEndOfFile */	128	#define ftruncate(fd,offs) EIO_ENOSYS () /* near-miss: SetEndOfFile */
…		…
203	/* we could even stat and see if it exists */	201	/* we could even stat and see if it exists */
204	static int	202	static int
205	symlink (const char old, const char neu)	203	symlink (const char old, const char neu)
206	{	204	{
207	#if WINVER >= 0x0600	205	#if WINVER >= 0x0600
		206	int flags;
		207
		208	/* This tries out all combinations of SYMBOLIC_LINK_FLAG_DIRECTORY
		209	* and SYMBOLIC_LINK_FLAG_ALLOW_UNPRIVILEGED_CREATE,
		210	* with directory first.
		211	*/
		212	for (flags = 3; flags >= 0; --flags)
208	if (CreateSymbolicLink (neu, old, 1))	213	if (CreateSymbolicLink (neu, old, flags))
209	return 0;	214	return 0;
210
211	if (CreateSymbolicLink (neu, old, 0))
212	return 0;
213	#endif	215	#endif
214		216
215	return EIO_ERRNO (ENOENT, -1);	217	return EIO_ERRNO (ENOENT, -1);
216	}	218	}
217		219
218	/* POSIX API only */	220	/* POSIX API only, causing trouble for win32 apps */
219	#define CreateHardLink(neu,old,flags) 0	221	#define CreateHardLink(neu,old,flags) 0 /* not really creating hardlink, still using relative paths? */
220	#define CreateSymbolicLink(neu,old,flags) 0	222	#define CreateSymbolicLink(neu,old,flags) 0 /* vista+ only */
221		223
222	struct statvfs	224	struct statvfs
223	{	225	{
224	int dummy;	226	int dummy;
225	};	227	};
…		…
229	#define D_NAME(entp) entp.cFileName	231	#define D_NAME(entp) entp.cFileName
230	#define D_TYPE(entp) (entp.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY ? DT_DIR : DT_REG)	232	#define D_TYPE(entp) (entp.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY ? DT_DIR : DT_REG)
231		233
232	#else	234	#else
233		235
		236	#include <sys/ioctl.h>
234	#include <sys/time.h>	237	#include <sys/time.h>
235	#include <sys/select.h>	238	#include <sys/select.h>
236	#include <unistd.h>	239	#include <unistd.h>
237	#include <signal.h>	240	#include <signal.h>
238	#include <dirent.h>	241	#include <dirent.h>
239		242
240	#if ANDROID	243	#ifdef ANDROID
241	#include <sys/vfs.h>	244	#include <sys/vfs.h>
242	#define statvfs statfs	245	#define statvfs statfs
243	#define fstatvfs fstatfs	246	#define fstatvfs fstatfs
244	#include <asm/page.h> /* supposedly limits.h does #define PAGESIZE PAGESIZE */	247	#include <asm/page.h> /* supposedly limits.h does #define PAGESIZE PAGESIZE */
245	#else	248	#else
…		…
280	# include <utime.h>	283	# include <utime.h>
281	#endif	284	#endif
282		285
283	#if HAVE_SYS_SYSCALL_H	286	#if HAVE_SYS_SYSCALL_H
284	# include <sys/syscall.h>	287	# include <sys/syscall.h>
285	#endif
286
287	#if HAVE_SYS_PRCTL_H
288	# include <sys/prctl.h>
289	#endif	288	#endif
290		289
291	#if HAVE_SENDFILE	290	#if HAVE_SENDFILE
292	# if __linux	291	# if __linux
293	# include <sys/sendfile.h>	292	# include <sys/sendfile.h>
…		…
301	# else	300	# else
302	# error sendfile support requested but not available	301	# error sendfile support requested but not available
303	# endif	302	# endif
304	#endif	303	#endif
305		304
		305	#if HAVE_RENAMEAT2
		306	# include <sys/syscall.h>
		307	# include <linux/fs.h>
		308	#endif
		309
306	#ifndef D_TYPE	310	#ifndef D_TYPE
307	# define D_TYPE(de) 0	311	# define D_TYPE(de) 0
308	#endif	312	#endif
309	#ifndef D_INO	313	#ifndef D_INO
310	# define D_INO(de) 0	314	# define D_INO(de) 0
…		…
318	# define NAME_MAX 4096	322	# define NAME_MAX 4096
319	#endif	323	#endif
320		324
321	/* used for readlink etc. */	325	/* used for readlink etc. */
322	#ifndef PATH_MAX	326	#ifndef PATH_MAX
323	# define PATH_MAX 4096	327	# define PATH_MAX 0
324	#endif	328	#endif
		329
		330	#ifndef O_CLOEXEC
		331	#define O_CLOEXEC 0
		332	#endif
		333
		334	#ifndef EIO_PATH_MIN
		335	# define EIO_PATH_MIN 8160
		336	#endif
		337
		338	#define EIO_PATH_MAX (PATH_MAX <= EIO_PATH_MIN ? EIO_PATH_MIN : PATH_MAX)
325		339
326	/* buffer size for various temporary buffers */	340	/* buffer size for various temporary buffers */
327	#define EIO_BUFSIZE 65536	341	#define EIO_BUFSIZE 65536
328		342
329	#define dBUF \	343	#define dBUF \
…		…
333	return -1	347	return -1
334		348
335	#define FUBd \	349	#define FUBd \
336	free (eio_buf)	350	free (eio_buf)
337		351
338	#define EIO_TICKS ((1000000 + 1023) >> 10)
339
340	/*****************************************************************************/	352	/*****************************************************************************/
341		353
342	struct tmpbuf
343	{
344	void *ptr;
345	int len;
346	};
347
348	static void *
349	tmpbuf_get (struct tmpbuf *buf, int len)
350	{
351	if (buf->len < len)
352	{
353	free (buf->ptr);
354	buf->ptr = malloc (buf->len = len);
355	}
356
357	return buf->ptr;
358	}
359
360	struct tmpbuf;	354	struct etp_tmpbuf;
361		355
362	#if _POSIX_VERSION >= 200809L	356	#if _POSIX_VERSION >= 200809L
363	#define HAVE_AT 1	357	#define HAVE_AT 1
364	#define WD2FD(wd) ((wd) ? (wd)->fd : AT_FDCWD)	358	#define WD2FD(wd) ((wd) ? (wd)->fd : AT_FDCWD)
365	#ifndef O_SEARCH	359	#ifndef O_SEARCH
366	#define O_SEARCH O_RDONLY	360	#define O_SEARCH O_RDONLY
367	#endif	361	#endif
368	#else	362	#else
369	#define HAVE_AT 0	363	#define HAVE_AT 0
370	static const char wd_expand (struct tmpbuf tmpbuf, eio_wd wd, const char *path);	364	static const char wd_expand (struct etp_tmpbuf tmpbuf, eio_wd wd, const char *path);
371	#endif	365	#endif
372		366
373	struct eio_pwd	367	struct eio_pwd
374	{	368	{
375	#if HAVE_AT	369	#if HAVE_AT
…		…
382	/*****************************************************************************/	376	/*****************************************************************************/
383		377
384	#define ETP_PRI_MIN EIO_PRI_MIN	378	#define ETP_PRI_MIN EIO_PRI_MIN
385	#define ETP_PRI_MAX EIO_PRI_MAX	379	#define ETP_PRI_MAX EIO_PRI_MAX
386		380
		381	#define ETP_TYPE_QUIT -1
		382	#define ETP_TYPE_GROUP EIO_GROUP
		383
		384	static void eio_nop_callback (void) { }
		385	static void (*eio_want_poll_cb)(void) = eio_nop_callback;
		386	static void (*eio_done_poll_cb)(void) = eio_nop_callback;
		387
		388	#define ETP_WANT_POLL(pool) eio_want_poll_cb ()
		389	#define ETP_DONE_POLL(pool) eio_done_poll_cb ()
		390
387	struct etp_worker;	391	struct etp_worker;
388
389	#define ETP_REQ eio_req	392	#define ETP_REQ eio_req
390	#define ETP_DESTROY(req) eio_destroy (req)	393	#define ETP_DESTROY(req) eio_destroy (req)
391	static int eio_finish (eio_req *req);	394	static int eio_finish (eio_req *req);
392	#define ETP_FINISH(req) eio_finish (req)	395	#define ETP_FINISH(req) eio_finish (req)
393	static void eio_execute (struct etp_worker self, eio_req req);	396	static void eio_execute (struct etp_worker self, eio_req req);
394	#define ETP_EXECUTE(wrk,req) eio_execute (wrk,req)	397	#define ETP_EXECUTE(wrk,req) eio_execute (wrk, req)
395		398
396	/*****************************************************************************/	399	#include "etp.c"
397		400
398	#define ETP_NUM_PRI (ETP_PRI_MAX - ETP_PRI_MIN + 1)	401	static struct etp_pool eio_pool;
399		402	#define EIO_POOL (&eio_pool)
400	/* calculate time difference in ~1/EIO_TICKS of a second */
401	ecb_inline int
402	tvdiff (struct timeval tv1, struct timeval tv2)
403	{
404	return (tv2->tv_sec - tv1->tv_sec ) * EIO_TICKS
405	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
406	}
407
408	static unsigned int started, idle, wanted = 4;
409
410	static void (*want_poll_cb) (void);
411	static void (*done_poll_cb) (void);
412
413	static unsigned int max_poll_time; /* reslock */
414	static unsigned int max_poll_reqs; /* reslock */
415
416	static unsigned int nreqs; /* reqlock */
417	static unsigned int nready; /* reqlock */
418	static unsigned int npending; /* reqlock */
419	static unsigned int max_idle = 4; /* maximum number of threads that can idle indefinitely */
420	static unsigned int idle_timeout = 10; /* number of seconds after which an idle threads exit */
421
422	static xmutex_t wrklock;
423	static xmutex_t reslock;
424	static xmutex_t reqlock;
425	static xcond_t reqwait;
426
427	typedef struct etp_worker
428	{
429	struct tmpbuf tmpbuf;
430
431	/* locked by wrklock */
432	struct etp_worker prev, next;
433
434	xthread_t tid;
435
436	#ifdef ETP_WORKER_COMMON
437	ETP_WORKER_COMMON
438	#endif
439	} etp_worker;
440
441	static etp_worker wrk_first; /* NOT etp */
442
443	#define ETP_WORKER_LOCK(wrk) X_LOCK (wrklock)
444	#define ETP_WORKER_UNLOCK(wrk) X_UNLOCK (wrklock)
445
446	/* worker threads management */
447
448	static void
449	etp_worker_clear (etp_worker *wrk)
450	{
451	}
452
453	static void ecb_cold
454	etp_worker_free (etp_worker *wrk)
455	{
456	free (wrk->tmpbuf.ptr);
457
458	wrk->next->prev = wrk->prev;
459	wrk->prev->next = wrk->next;
460
461	free (wrk);
462	}
463
464	static unsigned int
465	etp_nreqs (void)
466	{
467	int retval;
468	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
469	retval = nreqs;
470	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
471	return retval;
472	}
473
474	static unsigned int
475	etp_nready (void)
476	{
477	unsigned int retval;
478
479	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
480	retval = nready;
481	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
482
483	return retval;
484	}
485
486	static unsigned int
487	etp_npending (void)
488	{
489	unsigned int retval;
490
491	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
492	retval = npending;
493	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
494
495	return retval;
496	}
497
498	static unsigned int
499	etp_nthreads (void)
500	{
501	unsigned int retval;
502
503	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
504	retval = started;
505	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
506
507	return retval;
508	}
509
510	/*
511	* a somewhat faster data structure might be nice, but
512	* with 8 priorities this actually needs <20 insns
513	* per shift, the most expensive operation.
514	*/
515	typedef struct {
516	ETP_REQ qs[ETP_NUM_PRI], qe[ETP_NUM_PRI]; /* qstart, qend */
517	int size;
518	} etp_reqq;
519
520	static etp_reqq req_queue;
521	static etp_reqq res_queue;
522
523	static void ecb_noinline ecb_cold
524	reqq_init (etp_reqq *q)
525	{
526	int pri;
527
528	for (pri = 0; pri < ETP_NUM_PRI; ++pri)
529	q->qs[pri] = q->qe[pri] = 0;
530
531	q->size = 0;
532	}
533
534	static int ecb_noinline
535	reqq_push (etp_reqq q, ETP_REQ req)
536	{
537	int pri = req->pri;
538	req->next = 0;
539
540	if (q->qe[pri])
541	{
542	q->qe[pri]->next = req;
543	q->qe[pri] = req;
544	}
545	else
546	q->qe[pri] = q->qs[pri] = req;
547
548	return q->size++;
549	}
550
551	static ETP_REQ * ecb_noinline
552	reqq_shift (etp_reqq *q)
553	{
554	int pri;
555
556	if (!q->size)
557	return 0;
558
559	--q->size;
560
561	for (pri = ETP_NUM_PRI; pri--; )
562	{
563	eio_req *req = q->qs[pri];
564
565	if (req)
566	{
567	if (!(q->qs[pri] = (eio_req *)req->next))
568	q->qe[pri] = 0;
569
570	return req;
571	}
572	}
573
574	abort ();
575	}
576
577	static int ecb_cold
578	etp_init (void (want_poll)(void), void (done_poll)(void))
579	{
580	X_MUTEX_CREATE (wrklock);
581	X_MUTEX_CREATE (reslock);
582	X_MUTEX_CREATE (reqlock);
583	X_COND_CREATE (reqwait);
584
585	reqq_init (&req_queue);
586	reqq_init (&res_queue);
587
588	wrk_first.next =
589	wrk_first.prev = &wrk_first;
590
591	started = 0;
592	idle = 0;
593	nreqs = 0;
594	nready = 0;
595	npending = 0;
596
597	want_poll_cb = want_poll;
598	done_poll_cb = done_poll;
599
600	return 0;
601	}
602
603	X_THREAD_PROC (etp_proc);
604
605	static void ecb_cold
606	etp_start_thread (void)
607	{
608	etp_worker *wrk = calloc (1, sizeof (etp_worker));
609
610	/TODO/
611	assert (("unable to allocate worker thread data", wrk));
612
613	X_LOCK (wrklock);
614
615	if (xthread_create (&wrk->tid, etp_proc, (void *)wrk))
616	{
617	wrk->prev = &wrk_first;
618	wrk->next = wrk_first.next;
619	wrk_first.next->prev = wrk;
620	wrk_first.next = wrk;
621	++started;
622	}
623	else
624	free (wrk);
625
626	X_UNLOCK (wrklock);
627	}
628
629	static void
630	etp_maybe_start_thread (void)
631	{
632	if (ecb_expect_true (etp_nthreads () >= wanted))
633	return;
634
635	/* todo: maybe use idle here, but might be less exact */
636	if (ecb_expect_true (0 <= (int)etp_nthreads () + (int)etp_npending () - (int)etp_nreqs ()))
637	return;
638
639	etp_start_thread ();
640	}
641
642	static void ecb_cold
643	etp_end_thread (void)
644	{
645	eio_req req = calloc (1, sizeof (eio_req)); / will be freed by worker */
646
647	req->type = -1;
648	req->pri = ETP_PRI_MAX - ETP_PRI_MIN;
649
650	X_LOCK (reqlock);
651	reqq_push (&req_queue, req);
652	X_COND_SIGNAL (reqwait);
653	X_UNLOCK (reqlock);
654
655	X_LOCK (wrklock);
656	--started;
657	X_UNLOCK (wrklock);
658	}
659
660	static int
661	etp_poll (void)
662	{
663	unsigned int maxreqs;
664	unsigned int maxtime;
665	struct timeval tv_start, tv_now;
666
667	X_LOCK (reslock);
668	maxreqs = max_poll_reqs;
669	maxtime = max_poll_time;
670	X_UNLOCK (reslock);
671
672	if (maxtime)
673	gettimeofday (&tv_start, 0);
674
675	for (;;)
676	{
677	ETP_REQ *req;
678
679	etp_maybe_start_thread ();
680
681	X_LOCK (reslock);
682	req = reqq_shift (&res_queue);
683
684	if (req)
685	{
686	--npending;
687
688	if (!res_queue.size && done_poll_cb)
689	done_poll_cb ();
690	}
691
692	X_UNLOCK (reslock);
693
694	if (!req)
695	return 0;
696
697	X_LOCK (reqlock);
698	--nreqs;
699	X_UNLOCK (reqlock);
700
701	if (ecb_expect_false (req->type == EIO_GROUP && req->size))
702	{
703	req->int1 = 1; /* mark request as delayed */
704	continue;
705	}
706	else
707	{
708	int res = ETP_FINISH (req);
709	if (ecb_expect_false (res))
710	return res;
711	}
712
713	if (ecb_expect_false (maxreqs && !--maxreqs))
714	break;
715
716	if (maxtime)
717	{
718	gettimeofday (&tv_now, 0);
719
720	if (tvdiff (&tv_start, &tv_now) >= maxtime)
721	break;
722	}
723	}
724
725	errno = EAGAIN;
726	return -1;
727	}
728
729	static void
730	etp_cancel (ETP_REQ *req)
731	{
732	req->cancelled = 1;
733
734	eio_grp_cancel (req);
735	}
736
737	static void
738	etp_submit (ETP_REQ *req)
739	{
740	req->pri -= ETP_PRI_MIN;
741
742	if (ecb_expect_false (req->pri < ETP_PRI_MIN - ETP_PRI_MIN)) req->pri = ETP_PRI_MIN - ETP_PRI_MIN;
743	if (ecb_expect_false (req->pri > ETP_PRI_MAX - ETP_PRI_MIN)) req->pri = ETP_PRI_MAX - ETP_PRI_MIN;
744
745	if (ecb_expect_false (req->type == EIO_GROUP))
746	{
747	/* I hope this is worth it :/ */
748	X_LOCK (reqlock);
749	++nreqs;
750	X_UNLOCK (reqlock);
751
752	X_LOCK (reslock);
753
754	++npending;
755
756	if (!reqq_push (&res_queue, req) && want_poll_cb)
757	want_poll_cb ();
758
759	X_UNLOCK (reslock);
760	}
761	else
762	{
763	X_LOCK (reqlock);
764	++nreqs;
765	++nready;
766	reqq_push (&req_queue, req);
767	X_COND_SIGNAL (reqwait);
768	X_UNLOCK (reqlock);
769
770	etp_maybe_start_thread ();
771	}
772	}
773
774	static void ecb_cold
775	etp_set_max_poll_time (double nseconds)
776	{
777	if (WORDACCESS_UNSAFE) X_LOCK (reslock);
778	max_poll_time = nseconds * EIO_TICKS;
779	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);
780	}
781
782	static void ecb_cold
783	etp_set_max_poll_reqs (unsigned int maxreqs)
784	{
785	if (WORDACCESS_UNSAFE) X_LOCK (reslock);
786	max_poll_reqs = maxreqs;
787	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);
788	}
789
790	static void ecb_cold
791	etp_set_max_idle (unsigned int nthreads)
792	{
793	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
794	max_idle = nthreads;
795	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
796	}
797
798	static void ecb_cold
799	etp_set_idle_timeout (unsigned int seconds)
800	{
801	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
802	idle_timeout = seconds;
803	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
804	}
805
806	static void ecb_cold
807	etp_set_min_parallel (unsigned int nthreads)
808	{
809	if (wanted < nthreads)
810	wanted = nthreads;
811	}
812
813	static void ecb_cold
814	etp_set_max_parallel (unsigned int nthreads)
815	{
816	if (wanted > nthreads)
817	wanted = nthreads;
818
819	while (started > wanted)
820	etp_end_thread ();
821	}
822		403
823	/*****************************************************************************/	404	/*****************************************************************************/
824		405
825	static void	406	static void
826	grp_try_feed (eio_req *grp)	407	grp_try_feed (eio_req *grp)
827	{	408	{
828	while (grp->size < grp->int2 && !EIO_CANCELLED (grp))	409	while (grp->size < grp->int2 && !EIO_CANCELLED (grp))
829	{	410	{
830	grp->flags &= ~EIO_FLAG_GROUPADD;	411	grp->flags &= ~ETP_FLAG_GROUPADD;
831		412
832	EIO_FEED (grp);	413	EIO_FEED (grp);
833		414
834	/* stop if no progress has been made */	415	/* stop if no progress has been made */
835	if (!(grp->flags & EIO_FLAG_GROUPADD))	416	if (!(grp->flags & ETP_FLAG_GROUPADD))
836	{	417	{
837	grp->feed = 0;	418	grp->feed = 0;
838	break;	419	break;
839	}	420	}
840	}	421	}
…		…
847		428
848	/* call feeder, if applicable */	429	/* call feeder, if applicable */
849	grp_try_feed (grp);	430	grp_try_feed (grp);
850		431
851	/* finish, if done */	432	/* finish, if done */
852	if (!grp->size && grp->int1)	433	if (!grp->size && grp->flags & ETP_FLAG_DELAYED)
853	return eio_finish (grp);	434	return eio_finish (grp);
854	else	435	else
855	return 0;	436	return 0;
856	}	437	}
857		438
…		…
893	}	474	}
894		475
895	void	476	void
896	eio_grp_cancel (eio_req *grp)	477	eio_grp_cancel (eio_req *grp)
897	{	478	{
898	for (grp = grp->grp_first; grp; grp = grp->grp_next)	479	etp_grp_cancel (EIO_POOL, grp);
899	eio_cancel (grp);
900	}	480	}
901		481
902	void	482	void
903	eio_cancel (eio_req *req)	483	eio_cancel (eio_req *req)
904	{	484	{
905	etp_cancel (req);	485	etp_cancel (EIO_POOL, req);
906	}	486	}
907		487
908	void	488	void
909	eio_submit (eio_req *req)	489	eio_submit (eio_req *req)
910	{	490	{
911	etp_submit (req);	491	etp_submit (EIO_POOL, req);
912	}	492	}
913		493
914	unsigned int	494	unsigned int
915	eio_nreqs (void)	495	eio_nreqs (void)
916	{	496	{
917	return etp_nreqs ();	497	return etp_nreqs (EIO_POOL);
918	}	498	}
919		499
920	unsigned int	500	unsigned int
921	eio_nready (void)	501	eio_nready (void)
922	{	502	{
923	return etp_nready ();	503	return etp_nready (EIO_POOL);
924	}	504	}
925		505
926	unsigned int	506	unsigned int
927	eio_npending (void)	507	eio_npending (void)
928	{	508	{
929	return etp_npending ();	509	return etp_npending (EIO_POOL);
930	}	510	}
931		511
932	unsigned int ecb_cold	512	unsigned int ecb_cold
933	eio_nthreads (void)	513	eio_nthreads (void)
934	{	514	{
935	return etp_nthreads ();	515	return etp_nthreads (EIO_POOL);
936	}	516	}
937		517
938	void ecb_cold	518	void ecb_cold
939	eio_set_max_poll_time (double nseconds)	519	eio_set_max_poll_time (double nseconds)
940	{	520	{
941	etp_set_max_poll_time (nseconds);	521	etp_set_max_poll_time (EIO_POOL, nseconds);
942	}	522	}
943		523
944	void ecb_cold	524	void ecb_cold
945	eio_set_max_poll_reqs (unsigned int maxreqs)	525	eio_set_max_poll_reqs (unsigned int maxreqs)
946	{	526	{
947	etp_set_max_poll_reqs (maxreqs);	527	etp_set_max_poll_reqs (EIO_POOL, maxreqs);
948	}	528	}
949		529
950	void ecb_cold	530	void ecb_cold
951	eio_set_max_idle (unsigned int nthreads)	531	eio_set_max_idle (unsigned int nthreads)
952	{	532	{
953	etp_set_max_idle (nthreads);	533	etp_set_max_idle (EIO_POOL, nthreads);
954	}	534	}
955		535
956	void ecb_cold	536	void ecb_cold
957	eio_set_idle_timeout (unsigned int seconds)	537	eio_set_idle_timeout (unsigned int seconds)
958	{	538	{
959	etp_set_idle_timeout (seconds);	539	etp_set_idle_timeout (EIO_POOL, seconds);
960	}	540	}
961		541
962	void ecb_cold	542	void ecb_cold
963	eio_set_min_parallel (unsigned int nthreads)	543	eio_set_min_parallel (unsigned int nthreads)
964	{	544	{
965	etp_set_min_parallel (nthreads);	545	etp_set_min_parallel (EIO_POOL, nthreads);
966	}	546	}
967		547
968	void ecb_cold	548	void ecb_cold
969	eio_set_max_parallel (unsigned int nthreads)	549	eio_set_max_parallel (unsigned int nthreads)
970	{	550	{
971	etp_set_max_parallel (nthreads);	551	etp_set_max_parallel (EIO_POOL, nthreads);
972	}	552	}
973		553
974	int eio_poll (void)	554	int eio_poll (void)
975	{	555	{
976	return etp_poll ();	556	return etp_poll (EIO_POOL);
977	}	557	}
978		558
979	/*****************************************************************************/	559	/*****************************************************************************/
980	/* work around various missing functions */	560	/* work around various missing functions */
		561
		562	#if HAVE_POSIX_CLOSE && !__linux
		563	# define eio__close(fd) posix_close (fd, 0)
		564	#else
		565	# define eio__close(fd) close (fd)
		566	#endif
		567
		568	/* close() without disturbing errno */
		569	static void
		570	silent_close (int fd)
		571	{
		572	int saved_errno = errno;
		573	eio__close (fd);
		574	errno = saved_errno;
		575	}
981		576
982	#ifndef HAVE_UTIMES	577	#ifndef HAVE_UTIMES
983		578
984	# undef utimes	579	# undef utimes
985	# define utimes(path,times) eio__utimes (path, times)	580	# define utimes(path,times) eio__utimes (path, times)
…		…
1364	intptr_t end = addr + len;	959	intptr_t end = addr + len;
1365	intptr_t page = eio_pagesize ();	960	intptr_t page = eio_pagesize ();
1366		961
1367	if (addr < end)	962	if (addr < end)
1368	if (flags & EIO_MT_MODIFY) /* modify */	963	if (flags & EIO_MT_MODIFY) /* modify */
1369	do { ((volatile sig_atomic_t )addr) \|= 0; } while ((addr += page) < len && !EIO_CANCELLED (req));	964	do { ((volatile sig_atomic_t )addr) \|= 0; } while ((addr += page) < end && !EIO_CANCELLED (req));
1370	else	965	else
1371	do { ((volatile sig_atomic_t )addr) ; } while ((addr += page) < len && !EIO_CANCELLED (req));	966	do { ((volatile sig_atomic_t )addr) ; } while ((addr += page) < end && !EIO_CANCELLED (req));
1372	}	967	}
1373		968
1374	return 0;	969	return 0;
1375	}	970	}
1376		971
…		…
1391	req->result = req->offs == (off_t)-1 ? -1 : 0;	986	req->result = req->offs == (off_t)-1 ? -1 : 0;
1392	}	987	}
1393		988
1394	/* result will always end up in tmpbuf, there is always space for adding a 0-byte */	989	/* result will always end up in tmpbuf, there is always space for adding a 0-byte */
1395	static int	990	static int
1396	eio__realpath (struct tmpbuf tmpbuf, eio_wd wd, const char path)	991	eio__realpath (struct etp_tmpbuf tmpbuf, eio_wd wd, const char path)
1397	{	992	{
		993	char *res;
1398	const char *rel = path;	994	const char *rel = path;
1399	char *res;
1400	char tmp1, tmp2;	995	char tmp1, tmp2;
1401	#if SYMLOOP_MAX > 32	996	#if SYMLOOP_MAX > 32
1402	int symlinks = SYMLOOP_MAX;	997	int symlinks = SYMLOOP_MAX;
1403	#else	998	#else
1404	int symlinks = 32;	999	int symlinks = 32;
…		…
1410		1005
1411	errno = ENOENT;	1006	errno = ENOENT;
1412	if (!*rel)	1007	if (!*rel)
1413	return -1;	1008	return -1;
1414		1009
1415	res = tmpbuf_get (tmpbuf, PATH_MAX * 3);	1010	res = etp_tmpbuf_get (tmpbuf, EIO_PATH_MAX * 3);
		1011	#ifdef _WIN32
		1012	if (_access (rel, 4) != 0)
		1013	return -1;
		1014
		1015	symlinks = GetFullPathName (rel, EIO_PATH_MAX * 3, res, 0);
		1016
		1017	errno = ENAMETOOLONG;
		1018	if (symlinks >= EIO_PATH_MAX * 3)
		1019	return -1;
		1020
		1021	errno = EIO;
		1022	if (symlinks <= 0)
		1023	return -1;
		1024
		1025	return symlinks;
		1026
		1027	#else
1416	tmp1 = res + PATH_MAX;	1028	tmp1 = res + EIO_PATH_MAX;
1417	tmp2 = tmp1 + PATH_MAX;	1029	tmp2 = tmp1 + EIO_PATH_MAX;
1418		1030
1419	#if 0 /* disabled, the musl way to do things is just too racy */	1031	#if 0 /* disabled, the musl way to do things is just too racy */
1420	#if __linux && defined(O_NONBLOCK) && defined(O_NOATIME)	1032	#if __linux && defined(O_NONBLOCK) && defined(O_NOATIME)
1421	/* on linux we may be able to ask the kernel */	1033	/* on linux we may be able to ask the kernel */
1422	{	1034	{
1423	int fd = open (rel, O_RDONLY \| O_NONBLOCK \| O_NOCTTY \| O_NOATIME);	1035	int fd = open (rel, O_RDONLY \| O_NONBLOCK \| O_NOCTTY \| O_NOATIME);
1424		1036
1425	if (fd >= 0)	1037	if (fd >= 0)
1426	{	1038	{
1427	sprintf (tmp1, "/proc/self/fd/%d", fd);	1039	sprintf (tmp1, "/proc/self/fd/%d", fd);
1428	req->result = readlink (tmp1, res, PATH_MAX);	1040	req->result = readlink (tmp1, res, EIO_PATH_MAX);
1429	/* here we should probably stat the open file and the disk file, to make sure they still match */	1041	/* here we should probably stat the open file and the disk file, to make sure they still match */
1430	close (fd);	1042	eio__close (fd);
1431		1043
1432	if (req->result > 0)	1044	if (req->result > 0)
1433	goto done;	1045	goto done;
1434	}	1046	}
1435	else if (errno == ELOOP \|\| errno == ENAMETOOLONG \|\| errno == ENOENT \|\| errno == ENOTDIR \|\| errno == EIO)	1047	else if (errno == ELOOP \|\| errno == ENAMETOOLONG \|\| errno == ENOENT \|\| errno == ENOTDIR \|\| errno == EIO)
…		…
1446	if (wd == EIO_INVALID_WD)	1058	if (wd == EIO_INVALID_WD)
1447	return -1;	1059	return -1;
1448		1060
1449	if (wd == EIO_CWD)	1061	if (wd == EIO_CWD)
1450	{	1062	{
1451	if (!getcwd (res, PATH_MAX))	1063	if (!getcwd (res, EIO_PATH_MAX))
1452	return -1;	1064	return -1;
1453		1065
1454	len = strlen (res);	1066	len = strlen (res);
1455	}	1067	}
1456	else	1068	else
…		…
1503		1115
1504	/* zero-terminate, for readlink */	1116	/* zero-terminate, for readlink */
1505	res [len + 1] = 0;	1117	res [len + 1] = 0;
1506		1118
1507	/* now check if it's a symlink */	1119	/* now check if it's a symlink */
1508	linklen = readlink (tmpbuf->ptr, tmp1, PATH_MAX);	1120	linklen = readlink (tmpbuf->ptr, tmp1, EIO_PATH_MAX);
1509		1121
1510	if (linklen < 0)	1122	if (linklen < 0)
1511	{	1123	{
1512	if (errno != EINVAL)	1124	if (errno != EINVAL)
1513	return -1;	1125	return -1;
…		…
1519	{	1131	{
1520	/* yay, it was a symlink - build new path in tmp2 */	1132	/* yay, it was a symlink - build new path in tmp2 */
1521	int rellen = strlen (rel);	1133	int rellen = strlen (rel);
1522		1134
1523	errno = ENAMETOOLONG;	1135	errno = ENAMETOOLONG;
1524	if (linklen + 1 + rellen >= PATH_MAX)	1136	if (linklen + 1 + rellen >= EIO_PATH_MAX) /* also catch linklen >= EIO_PATH_MAX */
1525	return -1;	1137	return -1;
1526		1138
1527	errno = ELOOP;	1139	errno = ELOOP;
1528	if (!--symlinks)	1140	if (!--symlinks)
1529	return -1;	1141	return -1;
…		…
1543	/* special case for the lone root path */	1155	/* special case for the lone root path */
1544	if (res == tmpbuf->ptr)	1156	if (res == tmpbuf->ptr)
1545	*res++ = '/';	1157	*res++ = '/';
1546		1158
1547	return res - (char *)tmpbuf->ptr;	1159	return res - (char *)tmpbuf->ptr;
		1160	#endif
1548	}	1161	}
1549		1162
1550	static signed char	1163	static signed char
1551	eio_dent_cmp (const eio_dirent a, const eio_dirent b)	1164	eio_dent_cmp (const eio_dirent a, const eio_dirent b)
1552	{	1165	{
…		…
1792	return;	1405	return;
1793		1406
1794	dirp = fdopendir (fd);	1407	dirp = fdopendir (fd);
1795		1408
1796	if (!dirp)	1409	if (!dirp)
1797	close (fd);	1410	silent_close (fd);
1798	}	1411	}
1799	else	1412	else
1800	dirp = opendir (req->ptr1);	1413	dirp = opendir (req->ptr1);
1801	#else	1414	#else
1802	dirp = opendir (wd_expand (&self->tmpbuf, req->wd, req->ptr1));	1415	dirp = opendir (wd_expand (&self->tmpbuf, req->wd, req->ptr1));
…		…
2011	#if !HAVE_AT	1624	#if !HAVE_AT
2012		1625
2013	/* a bit like realpath, but usually faster because it doesn'T have to return */	1626	/* a bit like realpath, but usually faster because it doesn'T have to return */
2014	/* an absolute or canonical path */	1627	/* an absolute or canonical path */
2015	static const char *	1628	static const char *
2016	wd_expand (struct tmpbuf tmpbuf, eio_wd wd, const char path)	1629	wd_expand (struct etp_tmpbuf tmpbuf, eio_wd wd, const char path)
2017	{	1630	{
2018	if (!wd \|\| *path == '/')	1631	if (!wd \|\| *path == '/')
2019	return path;	1632	return path;
2020		1633
2021	if (path [0] == '.' && !path [1])	1634	if (path [0] == '.' && !path [1])
…		…
2023		1636
2024	{	1637	{
2025	int l1 = wd->len;	1638	int l1 = wd->len;
2026	int l2 = strlen (path);	1639	int l2 = strlen (path);
2027		1640
2028	char *res = tmpbuf_get (tmpbuf, l1 + l2 + 2);	1641	char *res = etp_tmpbuf_get (tmpbuf, l1 + l2 + 2);
2029		1642
2030	memcpy (res, wd->str, l1);	1643	memcpy (res, wd->str, l1);
2031	res [l1] = '/';	1644	res [l1] = '/';
2032	memcpy (res + l1 + 1, path, l2 + 1);	1645	memcpy (res + l1 + 1, path, l2 + 1);
2033		1646
…		…
2036	}	1649	}
2037		1650
2038	#endif	1651	#endif
2039		1652
2040	static eio_wd	1653	static eio_wd
2041	eio__wd_open_sync (struct tmpbuf tmpbuf, eio_wd wd, const char path)	1654	eio__wd_open_sync (struct etp_tmpbuf tmpbuf, eio_wd wd, const char path)
2042	{	1655	{
2043	int fd;	1656	int fd;
2044	eio_wd res;	1657	eio_wd res;
2045	int len = eio__realpath (tmpbuf, wd, path);	1658	int len = eio__realpath (tmpbuf, wd, path);
2046		1659
…		…
2068	}	1681	}
2069		1682
2070	eio_wd	1683	eio_wd
2071	eio_wd_open_sync (eio_wd wd, const char *path)	1684	eio_wd_open_sync (eio_wd wd, const char *path)
2072	{	1685	{
2073	struct tmpbuf tmpbuf = { 0 };	1686	struct etp_tmpbuf tmpbuf = { };
2074	wd = eio__wd_open_sync (&tmpbuf, wd, path);	1687	wd = eio__wd_open_sync (&tmpbuf, wd, path);
2075	free (tmpbuf.ptr);	1688	free (tmpbuf.ptr);
2076		1689
2077	return wd;	1690	return wd;
2078	}	1691	}
…		…
2081	eio_wd_close_sync (eio_wd wd)	1694	eio_wd_close_sync (eio_wd wd)
2082	{	1695	{
2083	if (wd != EIO_INVALID_WD && wd != EIO_CWD)	1696	if (wd != EIO_INVALID_WD && wd != EIO_CWD)
2084	{	1697	{
2085	#if HAVE_AT	1698	#if HAVE_AT
2086	close (wd->fd);	1699	eio__close (wd->fd);
2087	#endif	1700	#endif
2088	free (wd);	1701	free (wd);
2089	}	1702	}
2090	}	1703	}
2091		1704
2092	#if HAVE_AT	1705	#if HAVE_AT
2093		1706
		1707	static int
		1708	eio__renameat2 (int olddirfd, const char oldpath, int newdirfd, const char newpath, unsigned int flags)
		1709	{
		1710	#if HAVE_RENAMEAT2
		1711	return syscall (SYS_renameat2, olddirfd, oldpath, newdirfd, newpath, flags);
		1712	#else
		1713	if (flags)
		1714	return EIO_ENOSYS ();
		1715
		1716	return renameat (olddirfd, oldpath, newdirfd, newpath);
		1717	#endif
		1718	}
		1719
2094	/* they forgot these */	1720	/* they forgot these */
2095		1721
2096	static int	1722	static int
2097	eio__truncateat (int dirfd, const char *path, off_t length)	1723	eio__truncateat (int dirfd, const char *path, off_t length)
2098	{	1724	{
…		…
2101		1727
2102	if (fd < 0)	1728	if (fd < 0)
2103	return fd;	1729	return fd;
2104		1730
2105	res = ftruncate (fd, length);	1731	res = ftruncate (fd, length);
2106	close (fd);	1732	silent_close (fd);
2107	return res;	1733	return res;
2108	}	1734	}
2109		1735
2110	static int	1736	static int
2111	eio__statvfsat (int dirfd, const char path, struct statvfs buf)	1737	eio__statvfsat (int dirfd, const char path, struct statvfs buf)
…		…
2115		1741
2116	if (fd < 0)	1742	if (fd < 0)
2117	return fd;	1743	return fd;
2118		1744
2119	res = fstatvfs (fd, buf);	1745	res = fstatvfs (fd, buf);
2120	close (fd);	1746	silent_close (fd);
2121	return res;	1747	return res;
2122
2123	}	1748	}
2124		1749
2125	#endif	1750	#endif
2126		1751
2127	/*****************************************************************************/	1752	/*****************************************************************************/
2128		1753
2129	#define ALLOC(len) \	1754	#define ALLOC(len) \
2130	if (!req->ptr2) \	1755	if (!req->ptr2) \
2131	{ \	1756	{ \
2132	X_LOCK (wrklock); \	1757	X_LOCK (EIO_POOL->wrklock); \
2133	req->flags \|= EIO_FLAG_PTR2_FREE; \	1758	req->flags \|= EIO_FLAG_PTR2_FREE; \
2134	X_UNLOCK (wrklock); \	1759	X_UNLOCK (EIO_POOL->wrklock); \
2135	req->ptr2 = malloc (len); \	1760	req->ptr2 = malloc (len); \
2136	if (!req->ptr2) \	1761	if (!req->ptr2) \
2137	{ \	1762	{ \
2138	errno = ENOMEM; \	1763	errno = ENOMEM; \
2139	req->result = -1; \	1764	req->result = -1; \
2140	break; \	1765	goto alloc_fail; \
2141	} \	1766	} \
2142	}	1767	}
2143		1768
2144	static void ecb_noinline ecb_cold	1769	/*****************************************************************************/
2145	etp_proc_init (void)
2146	{
2147	#if HAVE_PRCTL_SET_NAME
2148	/* provide a more sensible "thread name" */
2149	char name[16 + 1];
2150	const int namelen = sizeof (name) - 1;
2151	int len;
2152		1770
2153	prctl (PR_GET_NAME, (unsigned long)name, 0, 0, 0);	1771	static void
2154	name [namelen] = 0;	1772	eio__slurp (int fd, eio_req *req)
2155	len = strlen (name);
2156	strcpy (name + (len <= namelen - 4 ? len : namelen - 4), "/eio");
2157	prctl (PR_SET_NAME, (unsigned long)name, 0, 0, 0);
2158	#endif
2159	}
2160
2161	X_THREAD_PROC (etp_proc)
2162	{	1773	{
2163	ETP_REQ *req;	1774	req->result = fd;
2164	struct timespec ts;
2165	etp_worker self = (etp_worker )thr_arg;
2166		1775
2167	etp_proc_init ();	1776	if (fd < 0)
		1777	return;
2168		1778
2169	/* try to distribute timeouts somewhat evenly */	1779	if (req->offs < 0 \|\| !req->size) /* do we need the size? */
2170	ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL);
2171
2172	for (;;)
2173	{	1780	{
2174	ts.tv_sec = 0;	1781	off_t size = lseek (fd, 0, SEEK_END);
2175		1782
2176	X_LOCK (reqlock);
2177
2178	for (;;)
2179	{
2180	req = reqq_shift (&req_queue);
2181
2182	if (req)
2183	break;
2184
2185	if (ts.tv_sec == 1) /* no request, but timeout detected, let's quit */
2186	{
2187	X_UNLOCK (reqlock);
2188	X_LOCK (wrklock);
2189	--started;
2190	X_UNLOCK (wrklock);
2191	goto quit;
2192	}
2193
2194	++idle;
2195
2196	if (idle <= max_idle)
2197	/* we are allowed to idle, so do so without any timeout */
2198	X_COND_WAIT (reqwait, reqlock);
2199	else
2200	{
2201	/* initialise timeout once */
2202	if (!ts.tv_sec)
2203	ts.tv_sec = time (0) + idle_timeout;
2204
2205	if (X_COND_TIMEDWAIT (reqwait, reqlock, ts) == ETIMEDOUT)
2206	ts.tv_sec = 1; /* assuming this is not a value computed above.,.. */
2207	}
2208
2209	--idle;
2210	}
2211
2212	--nready;
2213
2214	X_UNLOCK (reqlock);
2215
2216	if (req->type < 0)	1783	if (req->offs < 0)
2217	goto quit;	1784	req->offs += size;
2218		1785
2219	ETP_EXECUTE (self, req);	1786	if (!req->size)
2220		1787	req->size = size - req->offs;
2221	X_LOCK (reslock);
2222
2223	++npending;
2224
2225	if (!reqq_push (&res_queue, req) && want_poll_cb)
2226	want_poll_cb ();
2227
2228	etp_worker_clear (self);
2229
2230	X_UNLOCK (reslock);
2231	}	1788	}
2232		1789
2233	quit:	1790	ALLOC (req->size);
2234	free (req);	1791	req->result = pread (fd, req->ptr2, req->size, req->offs);
2235		1792
2236	X_LOCK (wrklock);	1793	silent_close (fd);
2237	etp_worker_free (self);
2238	X_UNLOCK (wrklock);
2239		1794
2240	return 0;	1795	alloc_fail:
		1796	;
2241	}	1797	}
2242
2243	/*****************************************************************************/
2244		1798
2245	int ecb_cold	1799	int ecb_cold
2246	eio_init (void (want_poll)(void), void (done_poll)(void))	1800	eio_init (void (want_poll)(void), void (done_poll)(void))
2247	{	1801	{
2248	return etp_init (want_poll, done_poll);	1802	eio_want_poll_cb = want_poll;
		1803	eio_done_poll_cb = done_poll;
		1804
		1805	return etp_init (EIO_POOL, 0, 0, 0);
2249	}	1806	}
2250		1807
2251	ecb_inline void	1808	ecb_inline void
2252	eio_api_destroy (eio_req *req)	1809	eio_api_destroy (eio_req *req)
2253	{	1810	{
…		…
2327	: read (req->int1, req->ptr2, req->size); break;	1884	: read (req->int1, req->ptr2, req->size); break;
2328	case EIO_WRITE: req->result = req->offs >= 0	1885	case EIO_WRITE: req->result = req->offs >= 0
2329	? pwrite (req->int1, req->ptr2, req->size, req->offs)	1886	? pwrite (req->int1, req->ptr2, req->size, req->offs)
2330	: write (req->int1, req->ptr2, req->size); break;	1887	: write (req->int1, req->ptr2, req->size); break;
2331		1888
		1889	case EIO_FCNTL: req->result = fcntl (req->int1, (int) req->int2, req->ptr2); break;
		1890	case EIO_IOCTL: req->result = ioctl (req->int1, (unsigned long)req->int2, req->ptr2); break;
		1891
2332	case EIO_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;	1892	case EIO_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
2333	case EIO_SENDFILE: req->result = eio__sendfile (req->int1, req->int2, req->offs, req->size); break;	1893	case EIO_SENDFILE: req->result = eio__sendfile (req->int1, req->int2, req->offs, req->size); break;
2334		1894
2335	#if HAVE_AT	1895	#if HAVE_AT
2336		1896
…		…
2340	req->result = fstatat (dirfd, req->ptr1, (EIO_STRUCT_STAT *)req->ptr2, AT_SYMLINK_NOFOLLOW); break;	1900	req->result = fstatat (dirfd, req->ptr1, (EIO_STRUCT_STAT *)req->ptr2, AT_SYMLINK_NOFOLLOW); break;
2341	case EIO_CHOWN: req->result = fchownat (dirfd, req->ptr1, req->int2, req->int3, 0); break;	1901	case EIO_CHOWN: req->result = fchownat (dirfd, req->ptr1, req->int2, req->int3, 0); break;
2342	case EIO_CHMOD: req->result = fchmodat (dirfd, req->ptr1, (mode_t)req->int2, 0); break;	1902	case EIO_CHMOD: req->result = fchmodat (dirfd, req->ptr1, (mode_t)req->int2, 0); break;
2343	case EIO_TRUNCATE: req->result = eio__truncateat (dirfd, req->ptr1, req->offs); break;	1903	case EIO_TRUNCATE: req->result = eio__truncateat (dirfd, req->ptr1, req->offs); break;
2344	case EIO_OPEN: req->result = openat (dirfd, req->ptr1, req->int1, (mode_t)req->int2); break;	1904	case EIO_OPEN: req->result = openat (dirfd, req->ptr1, req->int1, (mode_t)req->int2); break;
		1905	case EIO_SLURP: eio__slurp ( openat (dirfd, req->ptr1, O_RDONLY \| O_CLOEXEC), req); break;
2345		1906
2346	case EIO_UNLINK: req->result = unlinkat (dirfd, req->ptr1, 0); break;	1907	case EIO_UNLINK: req->result = unlinkat (dirfd, req->ptr1, 0); break;
2347	case EIO_RMDIR: /* complications arise because "." cannot be removed, so we might have to expand */	1908	case EIO_RMDIR: /* complications arise because "." cannot be removed, so we might have to expand */
2348	req->result = req->wd && SINGLEDOT (req->ptr1)	1909	req->result = req->wd && SINGLEDOT (req->ptr1)
2349	? rmdir (req->wd->str)	1910	? rmdir (req->wd->str)
2350	: unlinkat (dirfd, req->ptr1, AT_REMOVEDIR); break;	1911	: unlinkat (dirfd, req->ptr1, AT_REMOVEDIR); break;
2351	case EIO_MKDIR: req->result = mkdirat (dirfd, req->ptr1, (mode_t)req->int2); break;	1912	case EIO_MKDIR: req->result = mkdirat (dirfd, req->ptr1, (mode_t)req->int2); break;
		1913	case EIO_RENAME: req->result = eio__renameat2 (
		1914	dirfd,
2352	case EIO_RENAME: /* complications arise because "." cannot be renamed, so we might have to expand */	1915	/* complications arise because "." cannot be renamed, so we might have to expand */
2353	req->result = req->wd && SINGLEDOT (req->ptr1)	1916	req->wd && SINGLEDOT (req->ptr1) ? req->wd->str : req->ptr1,
2354	? rename (req->wd->str, req->ptr2)	1917	WD2FD ((eio_wd)req->int3),
2355	: renameat (dirfd, req->ptr1, WD2FD ((eio_wd)req->int3), req->ptr2); break;	1918	req->ptr2,
		1919	req->int2
		1920	);
		1921	break;
2356	case EIO_LINK: req->result = linkat (dirfd, req->ptr1, WD2FD ((eio_wd)req->int3), req->ptr2, 0); break;	1922	case EIO_LINK: req->result = linkat (dirfd, req->ptr1, WD2FD ((eio_wd)req->int3), req->ptr2, 0); break;
2357	case EIO_SYMLINK: req->result = symlinkat (req->ptr1, dirfd, req->ptr2); break;	1923	case EIO_SYMLINK: req->result = symlinkat (req->ptr1, dirfd, req->ptr2); break;
2358	case EIO_MKNOD: req->result = mknodat (dirfd, req->ptr1, (mode_t)req->int2, (dev_t)req->offs); break;	1924	case EIO_MKNOD: req->result = mknodat (dirfd, req->ptr1, (mode_t)req->int2, (dev_t)req->offs); break;
2359	case EIO_READLINK: ALLOC (PATH_MAX);
2360	req->result = readlinkat (dirfd, req->ptr1, req->ptr2, PATH_MAX); break;
2361	case EIO_STATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS));	1925	case EIO_STATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS));
2362	req->result = eio__statvfsat (dirfd, req->ptr1, (EIO_STRUCT_STATVFS *)req->ptr2); break;	1926	req->result = eio__statvfsat (dirfd, req->ptr1, (EIO_STRUCT_STATVFS *)req->ptr2); break;
		1927	case EIO_READLINK: ALLOC (EIO_PATH_MAX);
		1928	req->result = readlinkat (dirfd, req->ptr1, req->ptr2, EIO_PATH_MAX);
		1929	if (req->result == EIO_PATH_MAX)
		1930	{
		1931	req->result = -1;
		1932	errno = ENAMETOOLONG;
		1933	}
		1934	break;
2363	case EIO_UTIME:	1935	case EIO_UTIME:
2364	case EIO_FUTIME:	1936	case EIO_FUTIME:
2365	{	1937	{
2366	struct timespec ts[2];	1938	struct timespec ts[2];
2367	struct timespec *times;	1939	struct timespec *times;
…		…
2392	req->result = lstat (path , (EIO_STRUCT_STAT *)req->ptr2); break;	1964	req->result = lstat (path , (EIO_STRUCT_STAT *)req->ptr2); break;
2393	case EIO_CHOWN: req->result = chown (path , req->int2, req->int3); break;	1965	case EIO_CHOWN: req->result = chown (path , req->int2, req->int3); break;
2394	case EIO_CHMOD: req->result = chmod (path , (mode_t)req->int2); break;	1966	case EIO_CHMOD: req->result = chmod (path , (mode_t)req->int2); break;
2395	case EIO_TRUNCATE: req->result = truncate (path , req->offs); break;	1967	case EIO_TRUNCATE: req->result = truncate (path , req->offs); break;
2396	case EIO_OPEN: req->result = open (path , req->int1, (mode_t)req->int2); break;	1968	case EIO_OPEN: req->result = open (path , req->int1, (mode_t)req->int2); break;
		1969	case EIO_SLURP: eio__slurp ( open (path , O_RDONLY \| O_CLOEXEC), req); break;
2397		1970
2398	case EIO_UNLINK: req->result = unlink (path ); break;	1971	case EIO_UNLINK: req->result = unlink (path ); break;
2399	case EIO_RMDIR: req->result = rmdir (path ); break;	1972	case EIO_RMDIR: req->result = rmdir (path ); break;
2400	case EIO_MKDIR: req->result = mkdir (path , (mode_t)req->int2); break;	1973	case EIO_MKDIR: req->result = mkdir (path , (mode_t)req->int2); break;
2401	case EIO_RENAME: req->result = rename (path , req->ptr2); break;	1974	case EIO_RENAME: req->result = req->int2 ? EIO_ENOSYS () : rename (path, req->ptr2); break;
2402	case EIO_LINK: req->result = link (path , req->ptr2); break;	1975	case EIO_LINK: req->result = link (path , req->ptr2); break;
2403	case EIO_SYMLINK: req->result = symlink (path , req->ptr2); break;	1976	case EIO_SYMLINK: req->result = symlink (path , req->ptr2); break;
2404	case EIO_MKNOD: req->result = mknod (path , (mode_t)req->int2, (dev_t)req->offs); break;	1977	case EIO_MKNOD: req->result = mknod (path , (mode_t)req->int2, (dev_t)req->offs); break;
2405	case EIO_READLINK: ALLOC (PATH_MAX);
2406	req->result = readlink (path, req->ptr2, PATH_MAX); break;
2407	case EIO_STATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS));	1978	case EIO_STATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS));
2408	req->result = statvfs (path , (EIO_STRUCT_STATVFS *)req->ptr2); break;	1979	req->result = statvfs (path , (EIO_STRUCT_STATVFS *)req->ptr2); break;
		1980	case EIO_READLINK: ALLOC (EIO_PATH_MAX);
		1981	req->result = readlink (path, req->ptr2, EIO_PATH_MAX);
		1982	if (req->result == EIO_PATH_MAX)
		1983	{
		1984	req->result = -1;
		1985	errno = ENAMETOOLONG;
		1986	}
		1987	break;
2409		1988
2410	case EIO_UTIME:	1989	case EIO_UTIME:
2411	case EIO_FUTIME:	1990	case EIO_FUTIME:
2412	{	1991	{
2413	struct timeval tv[2];	1992	struct timeval tv[2];
…		…
2448		2027
2449	case EIO_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;	2028	case EIO_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
2450	case EIO_FCHMOD: req->result = fchmod (req->int1, (mode_t)req->int2); break;	2029	case EIO_FCHMOD: req->result = fchmod (req->int1, (mode_t)req->int2); break;
2451	case EIO_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break;	2030	case EIO_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break;
2452		2031
2453	case EIO_CLOSE: req->result = close (req->int1); break;	2032	case EIO_CLOSE: req->result = eio__close (req->int1); break;
2454	case EIO_DUP2: req->result = dup2 (req->int1, req->int2); break;	2033	case EIO_DUP2: req->result = dup2 (req->int1, req->int2); break;
2455	case EIO_SYNC: req->result = 0; sync (); break;	2034	case EIO_SYNC: req->result = 0; sync (); break;
2456	case EIO_FSYNC: req->result = fsync (req->int1); break;	2035	case EIO_FSYNC: req->result = fsync (req->int1); break;
2457	case EIO_FDATASYNC: req->result = fdatasync (req->int1); break;	2036	case EIO_FDATASYNC: req->result = fdatasync (req->int1); break;
2458	case EIO_SYNCFS: req->result = eio__syncfs (req->int1); break;	2037	case EIO_SYNCFS: req->result = eio__syncfs (req->int1); break;
…		…
2478	req->result = select (0, 0, 0, 0, &tv);	2057	req->result = select (0, 0, 0, 0, &tv);
2479	}	2058	}
2480	#endif	2059	#endif
2481	break;	2060	break;
2482		2061
		2062	#if 0
2483	case EIO_GROUP:	2063	case EIO_GROUP:
2484	abort (); /* handled in eio_request */	2064	abort (); /* handled in eio_request */
		2065	#endif
2485		2066
2486	case EIO_NOP:	2067	case EIO_NOP:
2487	req->result = 0;	2068	req->result = 0;
2488	break;	2069	break;
2489		2070
…		…
2494	default:	2075	default:
2495	req->result = EIO_ENOSYS ();	2076	req->result = EIO_ENOSYS ();
2496	break;	2077	break;
2497	}	2078	}
2498		2079
		2080	alloc_fail:
2499	req->errorno = errno;	2081	req->errorno = errno;
2500	}	2082	}
2501		2083
2502	#ifndef EIO_NO_WRAPPERS	2084	#ifndef EIO_NO_WRAPPERS
2503		2085
…		…
2592	}	2174	}
2593		2175
2594	eio_req eio_write (int fd, void buf, size_t length, off_t offset, int pri, eio_cb cb, void *data)	2176	eio_req eio_write (int fd, void buf, size_t length, off_t offset, int pri, eio_cb cb, void *data)
2595	{	2177	{
2596	REQ (EIO_WRITE); req->int1 = fd; req->offs = offset; req->size = length; req->ptr2 = buf; SEND;	2178	REQ (EIO_WRITE); req->int1 = fd; req->offs = offset; req->size = length; req->ptr2 = buf; SEND;
		2179	}
		2180
		2181	eio_req eio_fcntl (int fd, int cmd, void arg, int pri, eio_cb cb, void *data)
		2182	{
		2183	REQ (EIO_IOCTL); req->int1 = fd; req->int2 = cmd; req->ptr2 = arg; SEND;
		2184	}
		2185
		2186	eio_req eio_ioctl (int fd, unsigned long request, void buf, int pri, eio_cb cb, void *data)
		2187	{
		2188	REQ (EIO_IOCTL); req->int1 = fd; req->int2 = request; req->ptr2 = buf; SEND;
2597	}	2189	}
2598		2190
2599	eio_req eio_fstat (int fd, int pri, eio_cb cb, void data)	2191	eio_req eio_fstat (int fd, int pri, eio_cb cb, void data)
2600	{	2192	{
2601	REQ (EIO_FSTAT); req->int1 = fd; SEND;	2193	REQ (EIO_FSTAT); req->int1 = fd; SEND;
…		…
2746	eio_req eio_rename (const char path, const char new_path, int pri, eio_cb cb, void data)	2338	eio_req eio_rename (const char path, const char new_path, int pri, eio_cb cb, void data)
2747	{	2339	{
2748	return eio__2path (EIO_RENAME, path, new_path, pri, cb, data);	2340	return eio__2path (EIO_RENAME, path, new_path, pri, cb, data);
2749	}	2341	}
2750		2342
		2343	eio_req eio_slurp (const char path, void buf, size_t length, off_t offset, int pri, eio_cb cb, void data)
		2344	{
		2345	REQ (EIO_SLURP); PATH; req->offs = offset; req->size = length; req->ptr2 = buf; SEND;
		2346	}
		2347
2751	eio_req eio_custom (void (execute)(eio_req ), int pri, eio_cb cb, void data)	2348	eio_req eio_custom (void (execute)(eio_req ), int pri, eio_cb cb, void data)
2752	{	2349	{
2753	REQ (EIO_CUSTOM); req->feed = execute; SEND;	2350	REQ (EIO_CUSTOM); req->feed = execute; SEND;
2754	}	2351	}
2755		2352
…		…
2789	void	2386	void
2790	eio_grp_add (eio_req grp, eio_req req)	2387	eio_grp_add (eio_req grp, eio_req req)
2791	{	2388	{
2792	assert (("cannot add requests to IO::AIO::GRP after the group finished", grp->int1 != 2));	2389	assert (("cannot add requests to IO::AIO::GRP after the group finished", grp->int1 != 2));
2793		2390
2794	grp->flags \|= EIO_FLAG_GROUPADD;	2391	grp->flags \|= ETP_FLAG_GROUPADD;
2795		2392
2796	++grp->size;	2393	++grp->size;
2797	req->grp = grp;	2394	req->grp = grp;
2798		2395
2799	req->grp_prev = 0;	2396	req->grp_prev = 0;

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Comparing libeio/eio.c (file contents): Revision 1.127 by root, Mon Feb 18 03:15:19 2013 UTC vs. Revision 1.150 by root, Fri Jun 15 02:57:36 2018 UTC

Diff Legend

Comparing libeio/eio.c (file contents):
Revision 1.127 by root, Mon Feb 18 03:15:19 2013 UTC vs.
Revision 1.150 by root, Fri Jun 15 02:57:36 2018 UTC