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

Comparing libeio/eio.c (file contents):
Revision 1.104 by root, Mon Sep 26 16:54:25 2011 UTC vs.
Revision 1.143 by root, Sat Dec 3 16:33:46 2016 UTC

…		…
1	/*	1	/*
2	* libeio implementation	2	* libeio implementation
3	*	3	*
4	* Copyright (c) 2007,2008,2009,2010,2011 Marc Alexander Lehmann <libeio@schmorp.de>	4	* Copyright (c) 2007,2008,2009,2010,2011,2012,2013,2016 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	*
10	* 1. Redistributions of source code must retain the above copyright notice,	10	* 1. Redistributions of source code must retain the above copyright notice,
11	* this list of conditions and the following disclaimer.	11	* this list of conditions and the following disclaimer.
12	*	12	*
13	* 2. Redistributions in binary form must reproduce the above copyright	13	* 2. Redistributions in binary form must reproduce the above copyright
14	* notice, this list of conditions and the following disclaimer in the	14	* notice, this list of conditions and the following disclaimer in the
15	* documentation and/or other materials provided with the distribution.	15	* documentation and/or other materials provided with the distribution.
16	*	16	*
17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED	17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18	* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-	18	* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19	* CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO	19	* CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20	* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-	20	* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21	* CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,	21	* CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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 */
131	#define mknod(path,mode,dev) EIO_ENOSYS ()	129	#define mknod(path,mode,dev) EIO_ENOSYS ()
132	#define sync() EIO_ENOSYS ()	130	#define sync() EIO_ENOSYS ()
133	#define readlink(path,buf,s) EIO_ENOSYS ()	131	#define readlink(path,buf,s) EIO_ENOSYS ()
134	#define statvfs(path,buf) EIO_ENOSYS ()	132	#define statvfs(path,buf) EIO_ENOSYS ()
135	#define fstatvfs(fd,buf) EIO_ENOSYS ()	133	#define fstatvfs(fd,buf) EIO_ENOSYS ()
		134
		135	#define pread(fd,buf,count,offset) eio__pread (fd, buf, count, offset)
		136	#define pwrite(fd,buf,count,offset) eio__pwrite (fd, buf, count, offset)
		137
		138	#if __GNUC__
		139	typedef long long eio_off_t; /* signed for compatibility to msvc */
		140	#else
		141	typedef __int64 eio_off_t; /* unsigned not supported by msvc */
		142	#endif
		143
		144	static eio_ssize_t
		145	eio__pread (int fd, void *buf, eio_ssize_t count, eio_off_t offset)
		146	{
		147	OVERLAPPED o = { 0 };
		148	DWORD got;
		149
		150	o.Offset = offset;
		151	o.OffsetHigh = offset >> 32;
		152
		153	return ReadFile ((HANDLE)EIO_FD_TO_WIN32_HANDLE (fd), buf, count, &got, &o)
		154	? got : -1;
		155	}
		156
		157	static eio_ssize_t
		158	eio__pwrite (int fd, void *buf, eio_ssize_t count, eio_off_t offset)
		159	{
		160	OVERLAPPED o = { 0 };
		161	DWORD got;
		162
		163	o.Offset = offset;
		164	o.OffsetHigh = offset >> 32;
		165
		166	return WriteFile ((HANDLE)EIO_FD_TO_WIN32_HANDLE (fd), buf, count, &got, &o)
		167	? got : -1;
		168	}
136		169
137	/* rename() uses MoveFile, which fails to overwrite */	170	/* rename() uses MoveFile, which fails to overwrite */
138	#define rename(old,neu) eio__rename (old, neu)	171	#define rename(old,neu) eio__rename (old, neu)
139		172
140	static int	173	static int
…		…
168	/* we could even stat and see if it exists */	201	/* we could even stat and see if it exists */
169	static int	202	static int
170	symlink (const char old, const char neu)	203	symlink (const char old, const char neu)
171	{	204	{
172	#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)
173	if (CreateSymbolicLink (neu, old, 1))	213	if (CreateSymbolicLink (neu, old, flags))
174	return 0;	214	return 0;
175
176	if (CreateSymbolicLink (neu, old, 0))
177	return 0;
178	#endif	215	#endif
179		216
180	return EIO_ERRNO (ENOENT, -1);	217	return EIO_ERRNO (ENOENT, -1);
181	}	218	}
182		219
183	/* POSIX API only */	220	/* POSIX API only, causing trouble for win32 apps */
184	#define CreateHardLink(neu,old,flags) 0	221	#define CreateHardLink(neu,old,flags) 0 /* not really creating hardlink, still using relative paths? */
185	#define CreateSymbolicLink(neu,old,flags) 0	222	#define CreateSymbolicLink(neu,old,flags) 0 /* vista+ only */
186		223
187	struct statvfs	224	struct statvfs
188	{	225	{
189	int dummy;	226	int dummy;
190	};	227	};
…		…
196		233
197	#else	234	#else
198		235
199	#include <sys/time.h>	236	#include <sys/time.h>
200	#include <sys/select.h>	237	#include <sys/select.h>
201	#include <sys/statvfs.h>
202	#include <unistd.h>	238	#include <unistd.h>
203	#include <signal.h>	239	#include <signal.h>
204	#include <dirent.h>	240	#include <dirent.h>
205		241
		242	#ifdef ANDROID
		243	#include <sys/vfs.h>
		244	#define statvfs statfs
		245	#define fstatvfs fstatfs
		246	#include <asm/page.h> /* supposedly limits.h does #define PAGESIZE PAGESIZE */
		247	#else
		248	#include <sys/statvfs.h>
		249	#endif
		250
206	#if _POSIX_MEMLOCK \|\| _POSIX_MEMLOCK_RANGE \|\| _POSIX_MAPPED_FILES	251	#if _POSIX_MEMLOCK \|\| _POSIX_MEMLOCK_RANGE \|\| _POSIX_MAPPED_FILES
207	#include <sys/mman.h>	252	#include <sys/mman.h>
208	#endif	253	#endif
209		254
210	#define D_NAME(entp) entp->d_name	255	#define D_NAME(entp) entp->d_name
211		256
212	/* POSIX_SOURCE is useless on bsd's, and XOPEN_SOURCE is unreliable there, too */	257	/* POSIX_SOURCE is useless on bsd's, and XOPEN_SOURCE is unreliable there, too */
213	#if __FreeBSD__ \|\| defined __NetBSD__ \|\| defined __OpenBSD__	258	#if __FreeBSD__ \|\| __NetBSD__ \|\| __OpenBSD__
214	#define _DIRENT_HAVE_D_TYPE /* sigh */	259	#define _DIRENT_HAVE_D_TYPE /* sigh */
215	#define D_INO(de) (de)->d_fileno	260	#define D_INO(de) (de)->d_fileno
216	#define D_NAMLEN(de) (de)->d_namlen	261	#define D_NAMLEN(de) (de)->d_namlen
217	#elif __linux \|\| defined d_ino \|\| _XOPEN_SOURCE >= 600	262	#elif __linux \|\| defined d_ino \|\| _XOPEN_SOURCE >= 600
218	#define D_INO(de) (de)->d_ino	263	#define D_INO(de) (de)->d_ino
…		…
237	# include <utime.h>	282	# include <utime.h>
238	#endif	283	#endif
239		284
240	#if HAVE_SYS_SYSCALL_H	285	#if HAVE_SYS_SYSCALL_H
241	# include <sys/syscall.h>	286	# include <sys/syscall.h>
242	#endif
243
244	#if HAVE_SYS_PRCTL_H
245	# include <sys/prctl.h>
246	#endif	287	#endif
247		288
248	#if HAVE_SENDFILE	289	#if HAVE_SENDFILE
249	# if __linux	290	# if __linux
250	# include <sys/sendfile.h>	291	# include <sys/sendfile.h>
…		…
281	#endif	322	#endif
282		323
283	/* buffer size for various temporary buffers */	324	/* buffer size for various temporary buffers */
284	#define EIO_BUFSIZE 65536	325	#define EIO_BUFSIZE 65536
285		326
286	#define dBUF \	327	#define dBUF \
287	char *eio_buf = malloc (EIO_BUFSIZE); \	328	char *eio_buf = malloc (EIO_BUFSIZE); \
288	errno = ENOMEM; \	329	errno = ENOMEM; \
289	if (!eio_buf) \	330	if (!eio_buf) \
290	return -1	331	return -1
291		332
292	#define FUBd \	333	#define FUBd \
293	free (eio_buf)	334	free (eio_buf)
294		335
295	#define EIO_TICKS ((1000000 + 1023) >> 10)
296
297	/*****************************************************************************/	336	/*****************************************************************************/
298		337
299	struct tmpbuf	338	struct etp_tmpbuf;
		339
		340	#if _POSIX_VERSION >= 200809L
		341	#define HAVE_AT 1
		342	#define WD2FD(wd) ((wd) ? (wd)->fd : AT_FDCWD)
		343	#ifndef O_SEARCH
		344	#define O_SEARCH O_RDONLY
		345	#endif
		346	#else
		347	#define HAVE_AT 0
		348	static const char wd_expand (struct etp_tmpbuf tmpbuf, eio_wd wd, const char *path);
		349	#endif
		350
		351	struct eio_pwd
300	{	352	{
301	void *ptr;	353	#if HAVE_AT
		354	int fd;
		355	#endif
302	int len;	356	int len;
		357	char str[1]; /* actually, a 0-terminated canonical path */
303	};	358	};
304
305	static void *
306	tmpbuf_get (struct tmpbuf *buf, int len)
307	{
308	if (buf->len < len)
309	{
310	free (buf->ptr);
311	buf->ptr = malloc (buf->len = len);
312	}
313
314	return buf->ptr;
315	}
316		359
317	/*****************************************************************************/	360	/*****************************************************************************/
318		361
319	#define ETP_PRI_MIN EIO_PRI_MIN	362	#define ETP_PRI_MIN EIO_PRI_MIN
320	#define ETP_PRI_MAX EIO_PRI_MAX	363	#define ETP_PRI_MAX EIO_PRI_MAX
321		364
		365	#define ETP_TYPE_QUIT -1
		366	#define ETP_TYPE_GROUP EIO_GROUP
		367
		368	static void eio_nop_callback (void) { }
		369	static void (*eio_want_poll_cb)(void) = eio_nop_callback;
		370	static void (*eio_done_poll_cb)(void) = eio_nop_callback;
		371
		372	#define ETP_WANT_POLL(pool) eio_want_poll_cb ()
		373	#define ETP_DONE_POLL(pool) eio_done_poll_cb ()
		374
322	struct etp_worker;	375	struct etp_worker;
323
324	#define ETP_REQ eio_req	376	#define ETP_REQ eio_req
325	#define ETP_DESTROY(req) eio_destroy (req)	377	#define ETP_DESTROY(req) eio_destroy (req)
326	static int eio_finish (eio_req *req);	378	static int eio_finish (eio_req *req);
327	#define ETP_FINISH(req) eio_finish (req)	379	#define ETP_FINISH(req) eio_finish (req)
328	static void eio_execute (struct etp_worker self, eio_req req);	380	static void eio_execute (struct etp_worker self, eio_req req);
329	#define ETP_EXECUTE(wrk,req) eio_execute (wrk,req)	381	#define ETP_EXECUTE(wrk,req) eio_execute (wrk, req)
330		382
331	/*****************************************************************************/	383	#include "etp.c"
332		384
333	#define ETP_NUM_PRI (ETP_PRI_MAX - ETP_PRI_MIN + 1)	385	static struct etp_pool eio_pool;
334		386	#define EIO_POOL (&eio_pool)
335	/* calculate time difference in ~1/EIO_TICKS of a second */
336	ecb_inline int
337	tvdiff (struct timeval tv1, struct timeval tv2)
338	{
339	return (tv2->tv_sec - tv1->tv_sec ) * EIO_TICKS
340	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
341	}
342
343	static unsigned int started, idle, wanted = 4;
344
345	static void (*want_poll_cb) (void);
346	static void (*done_poll_cb) (void);
347
348	static unsigned int max_poll_time; /* reslock */
349	static unsigned int max_poll_reqs; /* reslock */
350
351	static unsigned int nreqs; /* reqlock */
352	static unsigned int nready; /* reqlock */
353	static unsigned int npending; /* reqlock */
354	static unsigned int max_idle = 4; /* maximum number of threads that can idle indefinitely */
355	static unsigned int idle_timeout = 10; /* number of seconds after which an idle threads exit */
356
357	static xmutex_t wrklock;
358	static xmutex_t reslock;
359	static xmutex_t reqlock;
360	static xcond_t reqwait;
361
362	#if !HAVE_PREADWRITE
363	/*
364	* make our pread/pwrite emulation safe against themselves, but not against
365	* normal read/write by using a mutex. slows down execution a lot,
366	* but that's your problem, not mine.
367	*/
368	static xmutex_t preadwritelock;
369	#endif
370
371	typedef struct etp_worker
372	{
373	struct tmpbuf tmpbuf;
374
375	/* locked by wrklock */
376	struct etp_worker prev, next;
377
378	xthread_t tid;
379
380	#ifdef ETP_WORKER_COMMON
381	ETP_WORKER_COMMON
382	#endif
383	} etp_worker;
384
385	static etp_worker wrk_first; /* NOT etp */
386
387	#define ETP_WORKER_LOCK(wrk) X_LOCK (wrklock)
388	#define ETP_WORKER_UNLOCK(wrk) X_UNLOCK (wrklock)
389
390	/* worker threads management */
391
392	static void ecb_cold
393	etp_worker_clear (etp_worker *wrk)
394	{
395	}
396
397	static void ecb_cold
398	etp_worker_free (etp_worker *wrk)
399	{
400	free (wrk->tmpbuf.ptr);
401
402	wrk->next->prev = wrk->prev;
403	wrk->prev->next = wrk->next;
404
405	free (wrk);
406	}
407
408	static unsigned int
409	etp_nreqs (void)
410	{
411	int retval;
412	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
413	retval = nreqs;
414	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
415	return retval;
416	}
417
418	static unsigned int
419	etp_nready (void)
420	{
421	unsigned int retval;
422
423	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
424	retval = nready;
425	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
426
427	return retval;
428	}
429
430	static unsigned int
431	etp_npending (void)
432	{
433	unsigned int retval;
434
435	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
436	retval = npending;
437	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
438
439	return retval;
440	}
441
442	static unsigned int
443	etp_nthreads (void)
444	{
445	unsigned int retval;
446
447	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
448	retval = started;
449	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
450
451	return retval;
452	}
453
454	/*
455	* a somewhat faster data structure might be nice, but
456	* with 8 priorities this actually needs <20 insns
457	* per shift, the most expensive operation.
458	*/
459	typedef struct {
460	ETP_REQ qs[ETP_NUM_PRI], qe[ETP_NUM_PRI]; /* qstart, qend */
461	int size;
462	} etp_reqq;
463
464	static etp_reqq req_queue;
465	static etp_reqq res_queue;
466
467	static void ecb_noinline ecb_cold
468	reqq_init (etp_reqq *q)
469	{
470	int pri;
471
472	for (pri = 0; pri < ETP_NUM_PRI; ++pri)
473	q->qs[pri] = q->qe[pri] = 0;
474
475	q->size = 0;
476	}
477
478	static int ecb_noinline
479	reqq_push (etp_reqq q, ETP_REQ req)
480	{
481	int pri = req->pri;
482	req->next = 0;
483
484	if (q->qe[pri])
485	{
486	q->qe[pri]->next = req;
487	q->qe[pri] = req;
488	}
489	else
490	q->qe[pri] = q->qs[pri] = req;
491
492	return q->size++;
493	}
494
495	static ETP_REQ * ecb_noinline
496	reqq_shift (etp_reqq *q)
497	{
498	int pri;
499
500	if (!q->size)
501	return 0;
502
503	--q->size;
504
505	for (pri = ETP_NUM_PRI; pri--; )
506	{
507	eio_req *req = q->qs[pri];
508
509	if (req)
510	{
511	if (!(q->qs[pri] = (eio_req *)req->next))
512	q->qe[pri] = 0;
513
514	return req;
515	}
516	}
517
518	abort ();
519	}
520
521	static int ecb_cold
522	etp_init (void (want_poll)(void), void (done_poll)(void))
523	{
524	X_MUTEX_CREATE (wrklock);
525	X_MUTEX_CREATE (reslock);
526	X_MUTEX_CREATE (reqlock);
527	X_COND_CREATE (reqwait);
528
529	reqq_init (&req_queue);
530	reqq_init (&res_queue);
531
532	wrk_first.next =
533	wrk_first.prev = &wrk_first;
534
535	started = 0;
536	idle = 0;
537	nreqs = 0;
538	nready = 0;
539	npending = 0;
540
541	want_poll_cb = want_poll;
542	done_poll_cb = done_poll;
543
544	return 0;
545	}
546
547	X_THREAD_PROC (etp_proc);
548
549	static void ecb_cold
550	etp_start_thread (void)
551	{
552	etp_worker *wrk = calloc (1, sizeof (etp_worker));
553
554	/TODO/
555	assert (("unable to allocate worker thread data", wrk));
556
557	X_LOCK (wrklock);
558
559	if (thread_create (&wrk->tid, etp_proc, (void *)wrk))
560	{
561	wrk->prev = &wrk_first;
562	wrk->next = wrk_first.next;
563	wrk_first.next->prev = wrk;
564	wrk_first.next = wrk;
565	++started;
566	}
567	else
568	free (wrk);
569
570	X_UNLOCK (wrklock);
571	}
572
573	static void
574	etp_maybe_start_thread (void)
575	{
576	if (ecb_expect_true (etp_nthreads () >= wanted))
577	return;
578
579	/* todo: maybe use idle here, but might be less exact */
580	if (ecb_expect_true (0 <= (int)etp_nthreads () + (int)etp_npending () - (int)etp_nreqs ()))
581	return;
582
583	etp_start_thread ();
584	}
585
586	static void ecb_cold
587	etp_end_thread (void)
588	{
589	eio_req *req = calloc (1, sizeof (eio_req));
590
591	req->type = -1;
592	req->pri = ETP_PRI_MAX - ETP_PRI_MIN;
593
594	X_LOCK (reqlock);
595	reqq_push (&req_queue, req);
596	X_COND_SIGNAL (reqwait);
597	X_UNLOCK (reqlock);
598
599	X_LOCK (wrklock);
600	--started;
601	X_UNLOCK (wrklock);
602	}
603
604	static int
605	etp_poll (void)
606	{
607	unsigned int maxreqs;
608	unsigned int maxtime;
609	struct timeval tv_start, tv_now;
610
611	X_LOCK (reslock);
612	maxreqs = max_poll_reqs;
613	maxtime = max_poll_time;
614	X_UNLOCK (reslock);
615
616	if (maxtime)
617	gettimeofday (&tv_start, 0);
618
619	for (;;)
620	{
621	ETP_REQ *req;
622
623	etp_maybe_start_thread ();
624
625	X_LOCK (reslock);
626	req = reqq_shift (&res_queue);
627
628	if (req)
629	{
630	--npending;
631
632	if (!res_queue.size && done_poll_cb)
633	done_poll_cb ();
634	}
635
636	X_UNLOCK (reslock);
637
638	if (!req)
639	return 0;
640
641	X_LOCK (reqlock);
642	--nreqs;
643	X_UNLOCK (reqlock);
644
645	if (ecb_expect_false (req->type == EIO_GROUP && req->size))
646	{
647	req->int1 = 1; /* mark request as delayed */
648	continue;
649	}
650	else
651	{
652	int res = ETP_FINISH (req);
653	if (ecb_expect_false (res))
654	return res;
655	}
656
657	if (ecb_expect_false (maxreqs && !--maxreqs))
658	break;
659
660	if (maxtime)
661	{
662	gettimeofday (&tv_now, 0);
663
664	if (tvdiff (&tv_start, &tv_now) >= maxtime)
665	break;
666	}
667	}
668
669	errno = EAGAIN;
670	return -1;
671	}
672
673	static void
674	etp_cancel (ETP_REQ *req)
675	{
676	req->cancelled = 1;
677
678	eio_grp_cancel (req);
679	}
680
681	static void
682	etp_submit (ETP_REQ *req)
683	{
684	req->pri -= ETP_PRI_MIN;
685
686	if (ecb_expect_false (req->pri < ETP_PRI_MIN - ETP_PRI_MIN)) req->pri = ETP_PRI_MIN - ETP_PRI_MIN;
687	if (ecb_expect_false (req->pri > ETP_PRI_MAX - ETP_PRI_MIN)) req->pri = ETP_PRI_MAX - ETP_PRI_MIN;
688
689	if (ecb_expect_false (req->type == EIO_GROUP))
690	{
691	/* I hope this is worth it :/ */
692	X_LOCK (reqlock);
693	++nreqs;
694	X_UNLOCK (reqlock);
695
696	X_LOCK (reslock);
697
698	++npending;
699
700	if (!reqq_push (&res_queue, req) && want_poll_cb)
701	want_poll_cb ();
702
703	X_UNLOCK (reslock);
704	}
705	else
706	{
707	X_LOCK (reqlock);
708	++nreqs;
709	++nready;
710	reqq_push (&req_queue, req);
711	X_COND_SIGNAL (reqwait);
712	X_UNLOCK (reqlock);
713
714	etp_maybe_start_thread ();
715	}
716	}
717
718	static void ecb_cold
719	etp_set_max_poll_time (double nseconds)
720	{
721	if (WORDACCESS_UNSAFE) X_LOCK (reslock);
722	max_poll_time = nseconds * EIO_TICKS;
723	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);
724	}
725
726	static void ecb_cold
727	etp_set_max_poll_reqs (unsigned int maxreqs)
728	{
729	if (WORDACCESS_UNSAFE) X_LOCK (reslock);
730	max_poll_reqs = maxreqs;
731	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);
732	}
733
734	static void ecb_cold
735	etp_set_max_idle (unsigned int nthreads)
736	{
737	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
738	max_idle = nthreads;
739	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
740	}
741
742	static void ecb_cold
743	etp_set_idle_timeout (unsigned int seconds)
744	{
745	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
746	idle_timeout = seconds;
747	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
748	}
749
750	static void ecb_cold
751	etp_set_min_parallel (unsigned int nthreads)
752	{
753	if (wanted < nthreads)
754	wanted = nthreads;
755	}
756
757	static void ecb_cold
758	etp_set_max_parallel (unsigned int nthreads)
759	{
760	if (wanted > nthreads)
761	wanted = nthreads;
762
763	while (started > wanted)
764	etp_end_thread ();
765	}
766		387
767	/*****************************************************************************/	388	/*****************************************************************************/
768		389
769	static void	390	static void
770	grp_try_feed (eio_req *grp)	391	grp_try_feed (eio_req *grp)
771	{	392	{
772	while (grp->size < grp->int2 && !EIO_CANCELLED (grp))	393	while (grp->size < grp->int2 && !EIO_CANCELLED (grp))
773	{	394	{
774	grp->flags &= ~EIO_FLAG_GROUPADD;	395	grp->flags &= ~ETP_FLAG_GROUPADD;
775		396
776	EIO_FEED (grp);	397	EIO_FEED (grp);
777		398
778	/* stop if no progress has been made */	399	/* stop if no progress has been made */
779	if (!(grp->flags & EIO_FLAG_GROUPADD))	400	if (!(grp->flags & ETP_FLAG_GROUPADD))
780	{	401	{
781	grp->feed = 0;	402	grp->feed = 0;
782	break;	403	break;
783	}	404	}
784	}	405	}
…		…
791		412
792	/* call feeder, if applicable */	413	/* call feeder, if applicable */
793	grp_try_feed (grp);	414	grp_try_feed (grp);
794		415
795	/* finish, if done */	416	/* finish, if done */
796	if (!grp->size && grp->int1)	417	if (!grp->size && grp->flags & ETP_FLAG_DELAYED)
797	return eio_finish (grp);	418	return eio_finish (grp);
798	else	419	else
799	return 0;	420	return 0;
800	}	421	}
801		422
…		…
837	}	458	}
838		459
839	void	460	void
840	eio_grp_cancel (eio_req *grp)	461	eio_grp_cancel (eio_req *grp)
841	{	462	{
842	for (grp = grp->grp_first; grp; grp = grp->grp_next)	463	etp_grp_cancel (EIO_POOL, grp);
843	eio_cancel (grp);
844	}	464	}
845		465
846	void	466	void
847	eio_cancel (eio_req *req)	467	eio_cancel (eio_req *req)
848	{	468	{
849	etp_cancel (req);	469	etp_cancel (EIO_POOL, req);
850	}	470	}
851		471
852	void	472	void
853	eio_submit (eio_req *req)	473	eio_submit (eio_req *req)
854	{	474	{
855	etp_submit (req);	475	etp_submit (EIO_POOL, req);
856	}	476	}
857		477
858	unsigned int	478	unsigned int
859	eio_nreqs (void)	479	eio_nreqs (void)
860	{	480	{
861	return etp_nreqs ();	481	return etp_nreqs (EIO_POOL);
862	}	482	}
863		483
864	unsigned int	484	unsigned int
865	eio_nready (void)	485	eio_nready (void)
866	{	486	{
867	return etp_nready ();	487	return etp_nready (EIO_POOL);
868	}	488	}
869		489
870	unsigned int	490	unsigned int
871	eio_npending (void)	491	eio_npending (void)
872	{	492	{
873	return etp_npending ();	493	return etp_npending (EIO_POOL);
874	}	494	}
875		495
876	unsigned int ecb_cold	496	unsigned int ecb_cold
877	eio_nthreads (void)	497	eio_nthreads (void)
878	{	498	{
879	return etp_nthreads ();	499	return etp_nthreads (EIO_POOL);
880	}	500	}
881		501
882	void ecb_cold	502	void ecb_cold
883	eio_set_max_poll_time (double nseconds)	503	eio_set_max_poll_time (double nseconds)
884	{	504	{
885	etp_set_max_poll_time (nseconds);	505	etp_set_max_poll_time (EIO_POOL, nseconds);
886	}	506	}
887		507
888	void ecb_cold	508	void ecb_cold
889	eio_set_max_poll_reqs (unsigned int maxreqs)	509	eio_set_max_poll_reqs (unsigned int maxreqs)
890	{	510	{
891	etp_set_max_poll_reqs (maxreqs);	511	etp_set_max_poll_reqs (EIO_POOL, maxreqs);
892	}	512	}
893		513
894	void ecb_cold	514	void ecb_cold
895	eio_set_max_idle (unsigned int nthreads)	515	eio_set_max_idle (unsigned int nthreads)
896	{	516	{
897	etp_set_max_idle (nthreads);	517	etp_set_max_idle (EIO_POOL, nthreads);
898	}	518	}
899		519
900	void ecb_cold	520	void ecb_cold
901	eio_set_idle_timeout (unsigned int seconds)	521	eio_set_idle_timeout (unsigned int seconds)
902	{	522	{
903	etp_set_idle_timeout (seconds);	523	etp_set_idle_timeout (EIO_POOL, seconds);
904	}	524	}
905		525
906	void ecb_cold	526	void ecb_cold
907	eio_set_min_parallel (unsigned int nthreads)	527	eio_set_min_parallel (unsigned int nthreads)
908	{	528	{
909	etp_set_min_parallel (nthreads);	529	etp_set_min_parallel (EIO_POOL, nthreads);
910	}	530	}
911		531
912	void ecb_cold	532	void ecb_cold
913	eio_set_max_parallel (unsigned int nthreads)	533	eio_set_max_parallel (unsigned int nthreads)
914	{	534	{
915	etp_set_max_parallel (nthreads);	535	etp_set_max_parallel (EIO_POOL, nthreads);
916	}	536	}
917		537
918	int eio_poll (void)	538	int eio_poll (void)
919	{	539	{
920	return etp_poll ();	540	return etp_poll (EIO_POOL);
921	}	541	}
922		542
923	/*****************************************************************************/	543	/*****************************************************************************/
924	/* work around various missing functions */	544	/* work around various missing functions */
925
926	#if !HAVE_PREADWRITE
927	# undef pread
928	# undef pwrite
929	# define pread eio__pread
930	# define pwrite eio__pwrite
931
932	static eio_ssize_t
933	eio__pread (int fd, void *buf, size_t count, off_t offset)
934	{
935	eio_ssize_t res;
936	off_t ooffset;
937
938	X_LOCK (preadwritelock);
939	ooffset = lseek (fd, 0, SEEK_CUR);
940	lseek (fd, offset, SEEK_SET);
941	res = read (fd, buf, count);
942	lseek (fd, ooffset, SEEK_SET);
943	X_UNLOCK (preadwritelock);
944
945	return res;
946	}
947
948	static eio_ssize_t
949	eio__pwrite (int fd, void *buf, size_t count, off_t offset)
950	{
951	eio_ssize_t res;
952	off_t ooffset;
953
954	X_LOCK (preadwritelock);
955	ooffset = lseek (fd, 0, SEEK_CUR);
956	lseek (fd, offset, SEEK_SET);
957	res = write (fd, buf, count);
958	lseek (fd, ooffset, SEEK_SET);
959	X_UNLOCK (preadwritelock);
960
961	return res;
962	}
963	#endif
964		545
965	#ifndef HAVE_UTIMES	546	#ifndef HAVE_UTIMES
966		547
967	# undef utimes	548	# undef utimes
968	# define utimes(path,times) eio__utimes (path, times)	549	# define utimes(path,times) eio__utimes (path, times)
…		…
1010	int res;	591	int res;
1011		592
1012	#if HAVE_SYS_SYNCFS	593	#if HAVE_SYS_SYNCFS
1013	res = (int)syscall (__NR_syncfs, (int)(fd));	594	res = (int)syscall (__NR_syncfs, (int)(fd));
1014	#else	595	#else
1015	res = -1;	596	res = EIO_ENOSYS ();
1016	errno = ENOSYS;
1017	#endif	597	#endif
1018		598
1019	if (res < 0 && errno == ENOSYS && fd >= 0)	599	if (res < 0 && errno == ENOSYS && fd >= 0)
1020	sync ();	600	sync ();
1021		601
…		…
1051	}	631	}
1052		632
1053	static int	633	static int
1054	eio__fallocate (int fd, int mode, off_t offset, size_t len)	634	eio__fallocate (int fd, int mode, off_t offset, size_t len)
1055	{	635	{
1056	#if HAVE_FALLOCATE	636	#if HAVE_LINUX_FALLOCATE
1057	return fallocate (fd, mode, offset, len);	637	return fallocate (fd, mode, offset, len);
1058	#else	638	#else
1059	errno = ENOSYS;	639	return EIO_ENOSYS ();
1060	return -1;
1061	#endif	640	#endif
1062	}	641	}
1063		642
1064	#if !HAVE_READAHEAD	643	#if !HAVE_READAHEAD
1065	# undef readahead	644	# undef readahead
…		…
1080	todo -= len;	659	todo -= len;
1081	}	660	}
1082		661
1083	FUBd;	662	FUBd;
1084		663
1085	errno = 0;	664	/* linux's readahead basically only fails for EBADF or EINVAL (not mmappable) */
		665	/* but not for e.g. EIO or eof, so we also never fail */
1086	return count;	666	return 0;
1087	}	667	}
1088		668
1089	#endif	669	#endif
1090		670
1091	/* sendfile always needs emulation */	671	/* sendfile always needs emulation */
…		…
1126		706
1127	/* according to source inspection, this is correct, and useful behaviour */	707	/* according to source inspection, this is correct, and useful behaviour */
1128	if (sbytes)	708	if (sbytes)
1129	res = sbytes;	709	res = sbytes;
1130		710
1131	# elif defined (__APPLE__)	711	# elif defined __APPLE__
1132	off_t sbytes = count;	712	off_t sbytes = count;
1133	res = sendfile (ifd, ofd, offset, &sbytes, 0, 0);	713	res = sendfile (ifd, ofd, offset, &sbytes, 0, 0);
1134		714
1135	/* according to the manpage, sbytes is always valid */	715	/* according to the manpage, sbytes is always valid */
1136	if (sbytes)	716	if (sbytes)
…		…
1163	HANDLE h = TO_SOCKET (ifd);	743	HANDLE h = TO_SOCKET (ifd);
1164	SetFilePointer (h, offset, 0, FILE_BEGIN);	744	SetFilePointer (h, offset, 0, FILE_BEGIN);
1165	res = TransmitFile (TO_SOCKET (ofd), h, count, 0, 0, 0, 0);	745	res = TransmitFile (TO_SOCKET (ofd), h, count, 0, 0, 0, 0);
1166		746
1167	#else	747	#else
1168	res = -1;	748	res = EIO_ENOSYS ();
1169	errno = ENOSYS;
1170	#endif	749	#endif
1171		750
1172	/* we assume sendfile can copy at least 128mb in one go */	751	/* we assume sendfile can copy at least 128mb in one go */
1173	if (res <= 128 * 1024 * 1024)	752	if (res <= 128 * 1024 * 1024)
1174	{	753	{
…		…
1360	}	939	}
1361		940
1362	/*****************************************************************************/	941	/*****************************************************************************/
1363	/* requests implemented outside eio_execute, because they are so large */	942	/* requests implemented outside eio_execute, because they are so large */
1364		943
1365	/* copies some absolute path to tmpbuf */	944	static void
1366	static char *	945	eio__lseek (eio_req *req)
1367	eio__getwd (struct tmpbuf *tmpbuf, eio_wd wd)
1368	{	946	{
1369	if (wd == EIO_CWD)	947	/* this usually gets optimised away completely, or your compiler sucks, */
1370	return getcwd (tmpbuf->ptr, PATH_MAX);	948	/* or the whence constants really are not 0, 1, 2 */
		949	int whence = req->int2 == EIO_SEEK_SET ? SEEK_SET
		950	: req->int2 == EIO_SEEK_CUR ? SEEK_CUR
		951	: req->int2 == EIO_SEEK_END ? SEEK_END
		952	: req->int2;
1371		953
1372	#if HAVE_AT	954	req->offs = lseek (req->int1, req->offs, whence);
1373	abort (); /TODO/	955	req->result = req->offs == (off_t)-1 ? -1 : 0;
1374	#else
1375	strcpy (tmpbuf->ptr, wd);
1376	#endif
1377	return tmpbuf->ptr;
1378	}	956	}
1379		957
1380	/* result will always end up in tmpbuf, there is always space for adding a 0-byte */	958	/* result will always end up in tmpbuf, there is always space for adding a 0-byte */
1381	static int	959	static int
1382	eio__realpath (struct tmpbuf tmpbuf, eio_wd wd, const char path)	960	eio__realpath (struct etp_tmpbuf tmpbuf, eio_wd wd, const char path)
1383	{	961	{
		962	char *res;
1384	const char *rel = path;	963	const char *rel = path;
1385	char *res;
1386	char tmp1, tmp2;	964	char tmp1, tmp2;
1387	#if SYMLOOP_MAX > 32	965	#if SYMLOOP_MAX > 32
1388	int symlinks = SYMLOOP_MAX;	966	int symlinks = SYMLOOP_MAX;
1389	#else	967	#else
1390	int symlinks = 32;	968	int symlinks = 32;
1391	#endif	969	#endif
1392		970
1393	/D/ /TODO: wd ignored /
1394
1395	errno = EINVAL;	971	errno = EINVAL;
1396	if (!rel)	972	if (!rel)
1397	return -1;	973	return -1;
1398		974
1399	errno = ENOENT;	975	errno = ENOENT;
1400	if (!*rel)	976	if (!*rel)
1401	return -1;	977	return -1;
1402		978
1403	res = tmpbuf_get (tmpbuf, PATH_MAX * 3);	979	res = etp_tmpbuf_get (tmpbuf, PATH_MAX * 3);
		980	#ifdef _WIN32
		981	if (_access (rel, 4) != 0)
		982	return -1;
		983
		984	symlinks = GetFullPathName (rel, PATH_MAX * 3, res, 0);
		985
		986	errno = ENAMETOOLONG;
		987	if (symlinks >= PATH_MAX * 3)
		988	return -1;
		989
		990	errno = EIO;
		991	if (symlinks <= 0)
		992	return -1;
		993
		994	return symlinks;
		995
		996	#else
1404	tmp1 = res + PATH_MAX;	997	tmp1 = res + PATH_MAX;
1405	tmp2 = tmp1 + PATH_MAX;	998	tmp2 = tmp1 + PATH_MAX;
1406		999
1407	#if 0 /* disabled, the musl way to do things is just too racy */	1000	#if 0 /* disabled, the musl way to do things is just too racy */
1408	#if __linux && defined(O_NONBLOCK) && defined(O_NOATIME)	1001	#if __linux && defined(O_NONBLOCK) && defined(O_NOATIME)
…		…
1412		1005
1413	if (fd >= 0)	1006	if (fd >= 0)
1414	{	1007	{
1415	sprintf (tmp1, "/proc/self/fd/%d", fd);	1008	sprintf (tmp1, "/proc/self/fd/%d", fd);
1416	req->result = readlink (tmp1, res, PATH_MAX);	1009	req->result = readlink (tmp1, res, PATH_MAX);
		1010	/* here we should probably stat the open file and the disk file, to make sure they still match */
1417	close (fd);	1011	close (fd);
1418
1419	/* here we should probably stat the open file and the disk file, to make sure they still match */
1420		1012
1421	if (req->result > 0)	1013	if (req->result > 0)
1422	goto done;	1014	goto done;
1423	}	1015	}
1424	else if (errno == ELOOP \|\| errno == ENAMETOOLONG \|\| errno == ENOENT \|\| errno == ENOTDIR \|\| errno == EIO)	1016	else if (errno == ELOOP \|\| errno == ENAMETOOLONG \|\| errno == ENOENT \|\| errno == ENOTDIR \|\| errno == EIO)
1425	return;	1017	return -1;
1426	}	1018	}
1427	#endif	1019	#endif
1428	#endif	1020	#endif
1429		1021
1430	if (*rel != '/')	1022	if (*rel != '/')
1431	{	1023	{
1432	if (!eio__getwd (tmpbuf, wd))	1024	int len;
		1025
		1026	errno = ENOENT;
		1027	if (wd == EIO_INVALID_WD)
1433	return -1;	1028	return -1;
		1029
		1030	if (wd == EIO_CWD)
		1031	{
		1032	if (!getcwd (res, PATH_MAX))
		1033	return -1;
		1034
		1035	len = strlen (res);
		1036	}
		1037	else
		1038	memcpy (res, wd->str, len = wd->len);
1434		1039
1435	if (res [1]) /* only use if not / */	1040	if (res [1]) /* only use if not / */
1436	res += strlen (res);	1041	res += len;
1437	}	1042	}
1438		1043
1439	while (*rel)	1044	while (*rel)
1440	{	1045	{
1441	eio_ssize_t len, linklen;	1046	eio_ssize_t len, linklen;
…		…
1469	}	1074	}
1470	}	1075	}
1471		1076
1472	errno = ENAMETOOLONG;	1077	errno = ENAMETOOLONG;
1473	if (res + 1 + len + 1 >= tmp1)	1078	if (res + 1 + len + 1 >= tmp1)
1474	return;	1079	return -1;
1475		1080
1476	/* copy one component */	1081	/* copy one component */
1477	*res = '/';	1082	*res = '/';
1478	memcpy (res + 1, beg, len);	1083	memcpy (res + 1, beg, len);
1479		1084
…		…
1519	/* special case for the lone root path */	1124	/* special case for the lone root path */
1520	if (res == tmpbuf->ptr)	1125	if (res == tmpbuf->ptr)
1521	*res++ = '/';	1126	*res++ = '/';
1522		1127
1523	return res - (char *)tmpbuf->ptr;	1128	return res - (char *)tmpbuf->ptr;
		1129	#endif
1524	}	1130	}
1525		1131
1526	static signed char	1132	static signed char
1527	eio_dent_cmp (const eio_dirent a, const eio_dirent b)	1133	eio_dent_cmp (const eio_dirent a, const eio_dirent b)
1528	{	1134	{
…		…
1688	eio_dent_insertion_sort (dents, size);	1294	eio_dent_insertion_sort (dents, size);
1689	}	1295	}
1690		1296
1691	/* read a full directory */	1297	/* read a full directory */
1692	static void	1298	static void
1693	eio__scandir (eio_req *req)	1299	eio__scandir (eio_req req, etp_worker self)
1694	{	1300	{
1695	char name, names;	1301	char name, names;
1696	int namesalloc = 4096 - sizeof (void ) 4;	1302	int namesalloc = 4096 - sizeof (void ) 4;
1697	int namesoffs = 0;	1303	int namesoffs = 0;
1698	int flags = req->int1;	1304	int flags = req->int1;
…		…
1716	#ifdef _WIN32	1322	#ifdef _WIN32
1717	{	1323	{
1718	int len = strlen ((const char *)req->ptr1);	1324	int len = strlen ((const char *)req->ptr1);
1719	char *path = malloc (MAX_PATH);	1325	char *path = malloc (MAX_PATH);
1720	const char *fmt;	1326	const char *fmt;
		1327	const char *reqpath = wd_expand (&self->tmpbuf, req->wd, req->ptr1);
1721		1328
1722	if (!len)	1329	if (!len)
1723	fmt = "./*";	1330	fmt = "./*";
1724	else if (((const char )req->ptr1)[len - 1] == '/' \|\| ((const char )req->ptr1)[len - 1] == '\\')	1331	else if (reqpath[len - 1] == '/' \|\| reqpath[len - 1] == '\\')
1725	fmt = "%s*";	1332	fmt = "%s*";
1726	else	1333	else
1727	fmt = "%s/*";	1334	fmt = "%s/*";
1728		1335
1729	_snprintf (path, MAX_PATH, fmt, (const char *)req->ptr1);	1336	_snprintf (path, MAX_PATH, fmt, reqpath);
1730	dirp = FindFirstFile (path, &entp);	1337	dirp = FindFirstFile (path, &entp);
1731	free (path);	1338	free (path);
1732		1339
1733	if (dirp == INVALID_HANDLE_VALUE)	1340	if (dirp == INVALID_HANDLE_VALUE)
1734	{	1341	{
…		…
1756		1363
1757	return;	1364	return;
1758	}	1365	}
1759	}	1366	}
1760	#else	1367	#else
		1368	#if HAVE_AT
		1369	if (req->wd)
		1370	{
		1371	int fd = openat (WD2FD (req->wd), req->ptr1, O_CLOEXEC \| O_SEARCH \| O_DIRECTORY);
		1372
		1373	if (fd < 0)
		1374	return;
		1375
		1376	dirp = fdopendir (fd);
		1377
		1378	if (!dirp)
		1379	close (fd);
		1380	}
		1381	else
1761	dirp = opendir (req->ptr1);	1382	dirp = opendir (req->ptr1);
		1383	#else
		1384	dirp = opendir (wd_expand (&self->tmpbuf, req->wd, req->ptr1));
		1385	#endif
1762		1386
1763	if (!dirp)	1387	if (!dirp)
1764	return;	1388	return;
1765	#endif	1389	#endif
1766		1390
…		…
1883	#ifdef DT_FIFO	1507	#ifdef DT_FIFO
1884	case DT_FIFO: ent->type = EIO_DT_FIFO; break;	1508	case DT_FIFO: ent->type = EIO_DT_FIFO; break;
1885	#endif	1509	#endif
1886	#ifdef DT_CHR	1510	#ifdef DT_CHR
1887	case DT_CHR: ent->type = EIO_DT_CHR; break;	1511	case DT_CHR: ent->type = EIO_DT_CHR; break;
1888	#endif	1512	#endif
1889	#ifdef DT_MPC	1513	#ifdef DT_MPC
1890	case DT_MPC: ent->type = EIO_DT_MPC; break;	1514	case DT_MPC: ent->type = EIO_DT_MPC; break;
1891	#endif	1515	#endif
1892	#ifdef DT_DIR	1516	#ifdef DT_DIR
1893	case DT_DIR: ent->type = EIO_DT_DIR; break;	1517	case DT_DIR: ent->type = EIO_DT_DIR; break;
1894	#endif	1518	#endif
1895	#ifdef DT_NAM	1519	#ifdef DT_NAM
1896	case DT_NAM: ent->type = EIO_DT_NAM; break;	1520	case DT_NAM: ent->type = EIO_DT_NAM; break;
1897	#endif	1521	#endif
1898	#ifdef DT_BLK	1522	#ifdef DT_BLK
1899	case DT_BLK: ent->type = EIO_DT_BLK; break;	1523	case DT_BLK: ent->type = EIO_DT_BLK; break;
1900	#endif	1524	#endif
1901	#ifdef DT_MPB	1525	#ifdef DT_MPB
1902	case DT_MPB: ent->type = EIO_DT_MPB; break;	1526	case DT_MPB: ent->type = EIO_DT_MPB; break;
1903	#endif	1527	#endif
1904	#ifdef DT_REG	1528	#ifdef DT_REG
1905	case DT_REG: ent->type = EIO_DT_REG; break;	1529	case DT_REG: ent->type = EIO_DT_REG; break;
1906	#endif	1530	#endif
1907	#ifdef DT_NWK	1531	#ifdef DT_NWK
1908	case DT_NWK: ent->type = EIO_DT_NWK; break;	1532	case DT_NWK: ent->type = EIO_DT_NWK; break;
1909	#endif	1533	#endif
1910	#ifdef DT_CMP	1534	#ifdef DT_CMP
1911	case DT_CMP: ent->type = EIO_DT_CMP; break;	1535	case DT_CMP: ent->type = EIO_DT_CMP; break;
1912	#endif	1536	#endif
1913	#ifdef DT_LNK	1537	#ifdef DT_LNK
1914	case DT_LNK: ent->type = EIO_DT_LNK; break;	1538	case DT_LNK: ent->type = EIO_DT_LNK; break;
1915	#endif	1539	#endif
1916	#ifdef DT_SOCK	1540	#ifdef DT_SOCK
1917	case DT_SOCK: ent->type = EIO_DT_SOCK; break;	1541	case DT_SOCK: ent->type = EIO_DT_SOCK; break;
…		…
1930	{	1554	{
1931	if (ent->type == EIO_DT_UNKNOWN)	1555	if (ent->type == EIO_DT_UNKNOWN)
1932	{	1556	{
1933	if (name == '.') / leading dots are likely directories, and, in any case, rare */	1557	if (name == '.') / leading dots are likely directories, and, in any case, rare */
1934	ent->score = 1;	1558	ent->score = 1;
1935	else if (!strchr (name, '.')) /* absense of dots indicate likely dirs */	1559	else if (!strchr (name, '.')) /* absence of dots indicate likely dirs */
1936	ent->score = len <= 2 ? 4 - len : len <= 4 ? 4 : len <= 7 ? 5 : 6; /* shorter == more likely dir, but avoid too many classes */	1560	ent->score = len <= 2 ? 4 - len : len <= 4 ? 4 : len <= 7 ? 5 : 6; /* shorter == more likely dir, but avoid too many classes */
1937	}	1561	}
1938	else if (ent->type == EIO_DT_DIR)	1562	else if (ent->type == EIO_DT_DIR)
1939	ent->score = 0;	1563	ent->score = 0;
1940	}	1564	}
…		…
1960	}	1584	}
1961	}	1585	}
1962		1586
1963	/*****************************************************************************/	1587	/*****************************************************************************/
1964	/* working directory stuff */	1588	/* working directory stuff */
		1589	/* various deficiencies in the posix 2008 api force us to */
		1590	/* keep the absolute path in string form at all times */
		1591	/* fuck yeah. */
		1592
		1593	#if !HAVE_AT
		1594
		1595	/* a bit like realpath, but usually faster because it doesn'T have to return */
		1596	/* an absolute or canonical path */
		1597	static const char *
		1598	wd_expand (struct etp_tmpbuf tmpbuf, eio_wd wd, const char path)
		1599	{
		1600	if (!wd \|\| *path == '/')
		1601	return path;
		1602
		1603	if (path [0] == '.' && !path [1])
		1604	return wd->str;
		1605
		1606	{
		1607	int l1 = wd->len;
		1608	int l2 = strlen (path);
		1609
		1610	char *res = etp_tmpbuf_get (tmpbuf, l1 + l2 + 2);
		1611
		1612	memcpy (res, wd->str, l1);
		1613	res [l1] = '/';
		1614	memcpy (res + l1 + 1, path, l2 + 1);
		1615
		1616	return res;
		1617	}
		1618	}
		1619
		1620	#endif
		1621
		1622	static eio_wd
		1623	eio__wd_open_sync (struct etp_tmpbuf tmpbuf, eio_wd wd, const char path)
		1624	{
		1625	int fd;
		1626	eio_wd res;
		1627	int len = eio__realpath (tmpbuf, wd, path);
		1628
		1629	if (len < 0)
		1630	return EIO_INVALID_WD;
1965		1631
1966	#if HAVE_AT	1632	#if HAVE_AT
		1633	fd = openat (WD2FD (wd), path, O_CLOEXEC \| O_SEARCH \| O_DIRECTORY);
1967		1634
1968	#define WD2FD(wd) (wd ? ((int)wd) - 1 : AT_FDCWD)	1635	if (fd < 0)
		1636	return EIO_INVALID_WD;
		1637	#endif
		1638
		1639	res = malloc (sizeof (res) + len); / one extra 0-byte */
		1640
		1641	#if HAVE_AT
		1642	res->fd = fd;
		1643	#endif
		1644
		1645	res->len = len;
		1646	memcpy (res->str, tmpbuf->ptr, len);
		1647	res->str [len] = 0;
		1648
		1649	return res;
		1650	}
1969		1651
1970	eio_wd	1652	eio_wd
1971	eio_wd_open_sync (eio_wd wd, const char *path)	1653	eio_wd_open_sync (eio_wd wd, const char *path)
1972	{	1654	{
1973	int fd = openat (WD2FD (wd), path, O_CLOEXEC \| O_SEARCH \| O_DIRECTORY);	1655	struct etp_tmpbuf tmpbuf = { };
		1656	wd = eio__wd_open_sync (&tmpbuf, wd, path);
		1657	free (tmpbuf.ptr);
1974		1658
1975	return fd >= 0 ? (eio_wd)(fd + 1) : EIO_INVALID_WD;	1659	return wd;
1976	}	1660	}
1977		1661
1978	void	1662	void
1979	eio_wd_close_sync (eio_wd wd)	1663	eio_wd_close_sync (eio_wd wd)
1980	{	1664	{
1981	int fd = WD2FD (wd);	1665	if (wd != EIO_INVALID_WD && wd != EIO_CWD)
1982
1983	if (fd >= 0)
1984	close (fd);
1985	}
1986
1987	#else
1988
1989	/* on legacy systems, we represent the working directories simply by their path strings */
1990
1991	static const char *
1992	wd_expand (struct tmpbuf tmpbuf, eio_wd wd, const char path)
1993	{
1994	if (!wd \|\| *path == '/')
1995	return path;
1996
1997	{
1998	int l1 = strlen ((const char *)wd);
1999	int l2 = strlen (path);
2000
2001	char *res = tmpbuf_get (tmpbuf, l1 + l2 + 2);
2002
2003	memcpy (res, wd, l1);
2004	res [l1] = '/';
2005	memcpy (res + l1 + 1, path, l2 + 1);
2006
2007	return res;
2008	}
2009	}
2010
2011	eio_wd
2012	eio__wd_open_sync (struct tmpbuf tmpbuf, eio_wd wd, const char path)
2013	{
2014	if (path == '/') / absolute paths ignore wd */
2015	path = strdup (path);
2016	else if (path [0] == '.' && !path [1]) /* special case '.', as it is common */
2017	return wd;
2018	else
2019	{	1666	{
2020	int len = eio__realpath (tmpbuf, wd, path);	1667	#if HAVE_AT
2021		1668	close (wd->fd);
2022	path = EIO_INVALID_WD;	1669	#endif
2023		1670	free (wd);
2024	if (len >= 0)
2025	{
2026	((char *)tmpbuf->ptr)[len] = 0;
2027	path = strdup (tmpbuf->ptr);
2028	}
2029	}	1671	}
2030
2031	if (!path)
2032	path = EIO_INVALID_WD;
2033
2034	return (eio_wd)path;
2035	}	1672	}
2036		1673
2037	eio_wd	1674	#if HAVE_AT
2038	eio_wd_open_sync (eio_wd wd, const char *path)
2039	{
2040	struct tmpbuf tmpbuf = { 0 };
2041	wd = eio__wd_open_sync (&tmpbuf, wd, path);
2042	free (tmpbuf.ptr);
2043		1675
		1676	/* they forgot these */
		1677
		1678	static int
		1679	eio__truncateat (int dirfd, const char *path, off_t length)
		1680	{
		1681	int fd = openat (dirfd, path, O_WRONLY \| O_CLOEXEC);
		1682	int res;
		1683
		1684	if (fd < 0)
2044	return wd;	1685	return fd;
2045	}
2046		1686
2047	void	1687	res = ftruncate (fd, length);
2048	eio_wd_close_sync (eio_wd wd)	1688	close (fd);
		1689	return res;
		1690	}
		1691
		1692	static int
		1693	eio__statvfsat (int dirfd, const char path, struct statvfs buf)
2049	{	1694	{
2050	if (wd != EIO_INVALID_WD)	1695	int fd = openat (dirfd, path, O_SEARCH \| O_CLOEXEC);
2051	free (wd);	1696	int res;
		1697
		1698	if (fd < 0)
		1699	return fd;
		1700
		1701	res = fstatvfs (fd, buf);
		1702	close (fd);
		1703	return res;
		1704
2052	}	1705	}
2053		1706
2054	#endif	1707	#endif
2055		1708
2056	/*****************************************************************************/	1709	/*****************************************************************************/
2057		1710
2058	#define ALLOC(len) \	1711	#define ALLOC(len) \
2059	if (!req->ptr2) \	1712	if (!req->ptr2) \
2060	{ \	1713	{ \
2061	X_LOCK (wrklock); \	1714	X_LOCK (EIO_POOL->wrklock); \
2062	req->flags \|= EIO_FLAG_PTR2_FREE; \	1715	req->flags \|= EIO_FLAG_PTR2_FREE; \
2063	X_UNLOCK (wrklock); \	1716	X_UNLOCK (EIO_POOL->wrklock); \
2064	req->ptr2 = malloc (len); \	1717	req->ptr2 = malloc (len); \
2065	if (!req->ptr2) \	1718	if (!req->ptr2) \
2066	{ \	1719	{ \
2067	errno = ENOMEM; \	1720	errno = ENOMEM; \
2068	req->result = -1; \	1721	req->result = -1; \
2069	break; \	1722	break; \
2070	} \	1723	} \
2071	}	1724	}
2072		1725
2073	X_THREAD_PROC (etp_proc)
2074	{
2075	ETP_REQ *req;
2076	struct timespec ts;
2077	etp_worker self = (etp_worker )thr_arg;
2078
2079	#if HAVE_PRCTL_SET_NAME
2080	prctl (PR_SET_NAME, (unsigned long)"eio_thread", 0, 0, 0);
2081	#endif
2082
2083	/* try to distribute timeouts somewhat evenly */
2084	ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL);
2085
2086	for (;;)
2087	{
2088	ts.tv_sec = 0;
2089
2090	X_LOCK (reqlock);
2091
2092	for (;;)
2093	{
2094	req = reqq_shift (&req_queue);
2095
2096	if (req)
2097	break;
2098
2099	if (ts.tv_sec == 1) /* no request, but timeout detected, let's quit */
2100	{
2101	X_UNLOCK (reqlock);
2102	X_LOCK (wrklock);
2103	--started;
2104	X_UNLOCK (wrklock);
2105	goto quit;
2106	}
2107
2108	++idle;
2109
2110	if (idle <= max_idle)
2111	/* we are allowed to idle, so do so without any timeout */
2112	X_COND_WAIT (reqwait, reqlock);
2113	else
2114	{
2115	/* initialise timeout once */
2116	if (!ts.tv_sec)
2117	ts.tv_sec = time (0) + idle_timeout;
2118
2119	if (X_COND_TIMEDWAIT (reqwait, reqlock, ts) == ETIMEDOUT)
2120	ts.tv_sec = 1; /* assuming this is not a value computed above.,.. */
2121	}
2122
2123	--idle;
2124	}
2125
2126	--nready;
2127
2128	X_UNLOCK (reqlock);
2129
2130	if (req->type < 0)
2131	goto quit;
2132
2133	ETP_EXECUTE (self, req);
2134
2135	X_LOCK (reslock);
2136
2137	++npending;
2138
2139	if (!reqq_push (&res_queue, req) && want_poll_cb)
2140	want_poll_cb ();
2141
2142	etp_worker_clear (self);
2143
2144	X_UNLOCK (reslock);
2145	}
2146
2147	quit:
2148	free (req);
2149
2150	X_LOCK (wrklock);
2151	etp_worker_free (self);
2152	X_UNLOCK (wrklock);
2153
2154	return 0;
2155	}
2156
2157	/*****************************************************************************/	1726	/*****************************************************************************/
2158		1727
2159	int ecb_cold	1728	int ecb_cold
2160	eio_init (void (want_poll)(void), void (done_poll)(void))	1729	eio_init (void (want_poll)(void), void (done_poll)(void))
2161	{	1730	{
2162	#if !HAVE_PREADWRITE	1731	eio_want_poll_cb = want_poll;
2163	X_MUTEX_CREATE (preadwritelock);	1732	eio_done_poll_cb = done_poll;
2164	#endif
2165		1733
2166	return etp_init (want_poll, done_poll);	1734	return etp_init (EIO_POOL, 0, 0, 0);
2167	}	1735	}
2168		1736
2169	ecb_inline void	1737	ecb_inline void
2170	eio_api_destroy (eio_req *req)	1738	eio_api_destroy (eio_req *req)
2171	{	1739	{
2172	free (req);	1740	free (req);
2173	}	1741	}
2174		1742
2175	#define REQ(rtype) \	1743	#define REQ(rtype) \
2176	eio_req *req; \	1744	eio_req *req; \
2177	\	1745	\
2178	req = (eio_req )calloc (1, sizeof req); \	1746	req = (eio_req )calloc (1, sizeof req); \
2179	if (!req) \	1747	if (!req) \
2180	return 0; \	1748	return 0; \
…		…
2194	{ \	1762	{ \
2195	eio_api_destroy (req); \	1763	eio_api_destroy (req); \
2196	return 0; \	1764	return 0; \
2197	}	1765	}
2198		1766
		1767	#define SINGLEDOT(ptr) (0[(char )(ptr)] == '.' && !1[(char )(ptr)])
		1768
2199	static void	1769	static void
2200	eio_execute (etp_worker self, eio_req req)	1770	eio_execute (etp_worker self, eio_req req)
2201	{	1771	{
2202	#if HAVE_AT	1772	#if HAVE_AT
2203	int dirfd;	1773	int dirfd;
…		…
2231	switch (req->type)	1801	switch (req->type)
2232	{	1802	{
2233	case EIO_WD_OPEN: req->wd = eio__wd_open_sync (&self->tmpbuf, req->wd, req->ptr1);	1803	case EIO_WD_OPEN: req->wd = eio__wd_open_sync (&self->tmpbuf, req->wd, req->ptr1);
2234	req->result = req->wd == EIO_INVALID_WD ? -1 : 0;	1804	req->result = req->wd == EIO_INVALID_WD ? -1 : 0;
2235	break;	1805	break;
		1806	case EIO_WD_CLOSE: req->result = 0;
		1807	eio_wd_close_sync (req->wd); break;
		1808
2236	case EIO_WD_CLOSE: eio_wd_close_sync (req->wd); break;	1809	case EIO_SEEK: eio__lseek (req); break;
2237
2238	case EIO_READ: ALLOC (req->size);	1810	case EIO_READ: ALLOC (req->size);
2239	req->result = req->offs >= 0	1811	req->result = req->offs >= 0
2240	? pread (req->int1, req->ptr2, req->size, req->offs)	1812	? pread (req->int1, req->ptr2, req->size, req->offs)
2241	: read (req->int1, req->ptr2, req->size); break;	1813	: read (req->int1, req->ptr2, req->size); break;
2242	case EIO_WRITE: req->result = req->offs >= 0	1814	case EIO_WRITE: req->result = req->offs >= 0
2243	? pwrite (req->int1, req->ptr2, req->size, req->offs)	1815	? pwrite (req->int1, req->ptr2, req->size, req->offs)
2244	: write (req->int1, req->ptr2, req->size); break;	1816	: write (req->int1, req->ptr2, req->size); break;
2245		1817
		1818	case EIO_FCNTL: req->result = fcntl (req->int1, (int) req->int2, req->ptr2); break;
		1819	case EIO_IOCTL: req->result = ioctl (req->int1, (unsigned long)req->int2, req->ptr2); break;
		1820
2246	case EIO_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;	1821	case EIO_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
2247	case EIO_SENDFILE: req->result = eio__sendfile (req->int1, req->int2, req->offs, req->size); break;	1822	case EIO_SENDFILE: req->result = eio__sendfile (req->int1, req->int2, req->offs, req->size); break;
2248		1823
2249	#if HAVE_AT	1824	#if HAVE_AT
2250	case EIO_GETPATH: abort ();	1825
2251	case EIO_STAT: ALLOC (sizeof (EIO_STRUCT_STAT));	1826	case EIO_STAT: ALLOC (sizeof (EIO_STRUCT_STAT));
2252	req->result = fstatat (dirfd, path, (EIO_STRUCT_STAT *)req->ptr2); break;	1827	req->result = fstatat (dirfd, req->ptr1, (EIO_STRUCT_STAT *)req->ptr2, 0); break;
2253	case EIO_LSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));	1828	case EIO_LSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));
2254	req->result = lstat (dirfd, path, (EIO_STRUCT_STAT *)req->ptr2); break;	1829	req->result = fstatat (dirfd, req->ptr1, (EIO_STRUCT_STAT *)req->ptr2, AT_SYMLINK_NOFOLLOW); break;
2255	#if 0/D/	1830	case EIO_CHOWN: req->result = fchownat (dirfd, req->ptr1, req->int2, req->int3, 0); break;
		1831	case EIO_CHMOD: req->result = fchmodat (dirfd, req->ptr1, (mode_t)req->int2, 0); break;
		1832	case EIO_TRUNCATE: req->result = eio__truncateat (dirfd, req->ptr1, req->offs); break;
		1833	case EIO_OPEN: req->result = openat (dirfd, req->ptr1, req->int1, (mode_t)req->int2); break;
		1834
		1835	case EIO_UNLINK: req->result = unlinkat (dirfd, req->ptr1, 0); break;
		1836	case EIO_RMDIR: /* complications arise because "." cannot be removed, so we might have to expand */
		1837	req->result = req->wd && SINGLEDOT (req->ptr1)
		1838	? rmdir (req->wd->str)
		1839	: unlinkat (dirfd, req->ptr1, AT_REMOVEDIR); break;
		1840	case EIO_MKDIR: req->result = mkdirat (dirfd, req->ptr1, (mode_t)req->int2); break;
		1841	case EIO_RENAME: /* complications arise because "." cannot be renamed, so we might have to expand */
		1842	req->result = req->wd && SINGLEDOT (req->ptr1)
		1843	? rename (req->wd->str, req->ptr2)
		1844	: renameat (dirfd, req->ptr1, WD2FD ((eio_wd)req->int3), req->ptr2); break;
		1845	case EIO_LINK: req->result = linkat (dirfd, req->ptr1, WD2FD ((eio_wd)req->int3), req->ptr2, 0); break;
		1846	case EIO_SYMLINK: req->result = symlinkat (req->ptr1, dirfd, req->ptr2); break;
		1847	case EIO_MKNOD: req->result = mknodat (dirfd, req->ptr1, (mode_t)req->int2, (dev_t)req->offs); break;
		1848	case EIO_READLINK: ALLOC (PATH_MAX);
		1849	req->result = readlinkat (dirfd, req->ptr1, req->ptr2, PATH_MAX); break;
2256	case EIO_STATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS));	1850	case EIO_STATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS));
2257	req->result = statvfs (dirfd, path, (EIO_STRUCT_STATVFS *)req->ptr2); break;	1851	req->result = eio__statvfsat (dirfd, req->ptr1, (EIO_STRUCT_STATVFS *)req->ptr2); break;
2258	#endif	1852	case EIO_UTIME:
2259	case EIO_CHOWN: req->result = chown (dirfd, path, req->int2, req->int3); break;	1853	case EIO_FUTIME:
2260	case EIO_CHMOD: req->result = chmod (dirfd, path, (mode_t)req->int2); break;	1854	{
2261	case EIO_TRUNCATE: req->result = truncate (dirfd, path, req->offs); break;	1855	struct timespec ts[2];
2262	case EIO_OPEN: req->result = open (dirfd, path, req->int1, (mode_t)req->int2); break;	1856	struct timespec *times;
2263		1857
2264	case EIO_UNLINK: req->result = unlink (dirfd, path); break;	1858	if (req->nv1 != -1. \|\| req->nv2 != -1.)
2265	case EIO_RMDIR: req->result = rmdir (dirfd, path); break;	1859	{
2266	case EIO_MKDIR: req->result = mkdir (dirfd, path, (mode_t)req->int2); break;	1860	ts[0].tv_sec = req->nv1;
2267	case EIO_RENAME: req->result = rename (dirfd, path, req->ptr2); break;	1861	ts[0].tv_nsec = (req->nv1 - ts[0].tv_sec) * 1e9;
2268	case EIO_LINK: req->result = link (dirfd, path, req->ptr2); break;	1862	ts[1].tv_sec = req->nv2;
2269	case EIO_SYMLINK: req->result = symlink (dirfd, path, req->ptr2); break;	1863	ts[1].tv_nsec = (req->nv2 - ts[1].tv_sec) * 1e9;
2270	case EIO_MKNOD: req->result = mknod (dirfd, path, (mode_t)req->int2, (dev_t)req->offs); break;	1864
		1865	times = ts;
		1866	}
		1867	else
		1868	times = 0;
		1869
		1870	req->result = req->type == EIO_FUTIME
		1871	? futimens (req->int1, times)
		1872	: utimensat (dirfd, req->ptr1, times, 0);
		1873	}
		1874	break;
		1875
2271	#else	1876	#else
		1877
2272	case EIO_STAT: ALLOC (sizeof (EIO_STRUCT_STAT));	1878	case EIO_STAT: ALLOC (sizeof (EIO_STRUCT_STAT));
2273	req->result = stat (path , (EIO_STRUCT_STAT *)req->ptr2); break;	1879	req->result = stat (path , (EIO_STRUCT_STAT *)req->ptr2); break;
2274	case EIO_LSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));	1880	case EIO_LSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));
2275	req->result = lstat (path , (EIO_STRUCT_STAT *)req->ptr2); break;	1881	req->result = lstat (path , (EIO_STRUCT_STAT *)req->ptr2); break;
2276	case EIO_CHOWN: req->result = chown (path , req->int2, req->int3); break;	1882	case EIO_CHOWN: req->result = chown (path , req->int2, req->int3); break;
…		…
2283	case EIO_MKDIR: req->result = mkdir (path , (mode_t)req->int2); break;	1889	case EIO_MKDIR: req->result = mkdir (path , (mode_t)req->int2); break;
2284	case EIO_RENAME: req->result = rename (path , req->ptr2); break;	1890	case EIO_RENAME: req->result = rename (path , req->ptr2); break;
2285	case EIO_LINK: req->result = link (path , req->ptr2); break;	1891	case EIO_LINK: req->result = link (path , req->ptr2); break;
2286	case EIO_SYMLINK: req->result = symlink (path , req->ptr2); break;	1892	case EIO_SYMLINK: req->result = symlink (path , req->ptr2); break;
2287	case EIO_MKNOD: req->result = mknod (path , (mode_t)req->int2, (dev_t)req->offs); break;	1893	case EIO_MKNOD: req->result = mknod (path , (mode_t)req->int2, (dev_t)req->offs); break;
2288
2289	case EIO_READLINK: ALLOC (PATH_MAX);	1894	case EIO_READLINK: ALLOC (PATH_MAX);
2290	req->result = readlink (path, req->ptr2, PATH_MAX); break;	1895	req->result = readlink (path, req->ptr2, PATH_MAX); break;
		1896	case EIO_STATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS));
		1897	req->result = statvfs (path , (EIO_STRUCT_STATVFS *)req->ptr2); break;
		1898
		1899	case EIO_UTIME:
		1900	case EIO_FUTIME:
		1901	{
		1902	struct timeval tv[2];
		1903	struct timeval *times;
		1904
		1905	if (req->nv1 != -1. \|\| req->nv2 != -1.)
		1906	{
		1907	tv[0].tv_sec = req->nv1;
		1908	tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1e6;
		1909	tv[1].tv_sec = req->nv2;
		1910	tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1e6;
		1911
		1912	times = tv;
		1913	}
		1914	else
		1915	times = 0;
		1916
		1917	req->result = req->type == EIO_FUTIME
		1918	? futimes (req->int1, times)
		1919	: utimes (req->ptr1, times);
		1920	}
		1921	break;
		1922
2291	#endif	1923	#endif
2292		1924
2293	case EIO_REALPATH: if (0 <= (req->result = eio__realpath (&self->tmpbuf, req->wd, req->ptr1)))	1925	case EIO_REALPATH: if (0 <= (req->result = eio__realpath (&self->tmpbuf, req->wd, req->ptr1)))
2294	{	1926	{
2295	ALLOC (req->result);	1927	ALLOC (req->result);
2296	memcpy (req->ptr2, self->tmpbuf.ptr, req->result);	1928	memcpy (req->ptr2, self->tmpbuf.ptr, req->result);
2297	}	1929	}
2298	break;	1930	break;
2299
2300	case EIO_STATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS)); /D/
2301	req->result = statvfs (path , (EIO_STRUCT_STATVFS *)req->ptr2); break;
2302		1931
2303	case EIO_FSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));	1932	case EIO_FSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));
2304	req->result = fstat (req->int1, (EIO_STRUCT_STAT *)req->ptr2); break;	1933	req->result = fstat (req->int1, (EIO_STRUCT_STAT *)req->ptr2); break;
2305		1934
2306	case EIO_FSTATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS));	1935	case EIO_FSTATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS));
…		…
2321	case EIO_MTOUCH: req->result = eio__mtouch (req); break;	1950	case EIO_MTOUCH: req->result = eio__mtouch (req); break;
2322	case EIO_MLOCK: req->result = eio__mlock (req->ptr2, req->size); break;	1951	case EIO_MLOCK: req->result = eio__mlock (req->ptr2, req->size); break;
2323	case EIO_MLOCKALL: req->result = eio__mlockall (req->int1); break;	1952	case EIO_MLOCKALL: req->result = eio__mlockall (req->int1); break;
2324	case EIO_FALLOCATE: req->result = eio__fallocate (req->int1, req->int2, req->offs, req->size); break;	1953	case EIO_FALLOCATE: req->result = eio__fallocate (req->int1, req->int2, req->offs, req->size); break;
2325		1954
2326	case EIO_READDIR: eio__scandir (req); break;	1955	case EIO_READDIR: eio__scandir (req, self); break;
2327		1956
2328	case EIO_BUSY:	1957	case EIO_BUSY:
2329	#ifdef _WIN32	1958	#ifdef _WIN32
2330	Sleep (req->nv1 * 1e3);	1959	Sleep (req->nv1 * 1e3);
2331	#else	1960	#else
…		…
2338	req->result = select (0, 0, 0, 0, &tv);	1967	req->result = select (0, 0, 0, 0, &tv);
2339	}	1968	}
2340	#endif	1969	#endif
2341	break;	1970	break;
2342		1971
2343	case EIO_UTIME:	1972	#if 0
2344	case EIO_FUTIME:
2345	{
2346	struct timeval tv[2];
2347	struct timeval *times;
2348
2349	if (req->nv1 != -1. \|\| req->nv2 != -1.)
2350	{
2351	tv[0].tv_sec = req->nv1;
2352	tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.;
2353	tv[1].tv_sec = req->nv2;
2354	tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.;
2355
2356	times = tv;
2357	}
2358	else
2359	times = 0;
2360
2361	req->result = req->type == EIO_FUTIME
2362	? futimes (req->int1, times)
2363	: utimes (req->ptr1, times);
2364	}
2365	break;
2366
2367	case EIO_GROUP:	1973	case EIO_GROUP:
2368	abort (); /* handled in eio_request */	1974	abort (); /* handled in eio_request */
		1975	#endif
2369		1976
2370	case EIO_NOP:	1977	case EIO_NOP:
2371	req->result = 0;	1978	req->result = 0;
2372	break;	1979	break;
2373		1980
2374	case EIO_CUSTOM:	1981	case EIO_CUSTOM:
2375	req->feed (req);	1982	req->feed (req);
2376	break;	1983	break;
2377		1984
2378	default:	1985	default:
2379	errno = ENOSYS;
2380	req->result = -1;	1986	req->result = EIO_ENOSYS ();
2381	break;	1987	break;
2382	}	1988	}
2383		1989
2384	req->errorno = errno;	1990	req->errorno = errno;
2385	}	1991	}
2386		1992
2387	#ifndef EIO_NO_WRAPPERS	1993	#ifndef EIO_NO_WRAPPERS
2388		1994
		1995	eio_req eio_wd_open (const char path, int pri, eio_cb cb, void *data)
		1996	{
		1997	REQ (EIO_WD_OPEN); PATH; SEND;
		1998	}
		1999
		2000	eio_req eio_wd_close (eio_wd wd, int pri, eio_cb cb, void data)
		2001	{
		2002	REQ (EIO_WD_CLOSE); req->wd = wd; SEND;
		2003	}
		2004
2389	eio_req eio_nop (int pri, eio_cb cb, void data)	2005	eio_req eio_nop (int pri, eio_cb cb, void data)
2390	{	2006	{
2391	REQ (EIO_NOP); SEND;	2007	REQ (EIO_NOP); SEND;
2392	}	2008	}
2393		2009
…		…
2454	eio_req eio_readahead (int fd, off_t offset, size_t length, int pri, eio_cb cb, void data)	2070	eio_req eio_readahead (int fd, off_t offset, size_t length, int pri, eio_cb cb, void data)
2455	{	2071	{
2456	REQ (EIO_READAHEAD); req->int1 = fd; req->offs = offset; req->size = length; SEND;	2072	REQ (EIO_READAHEAD); req->int1 = fd; req->offs = offset; req->size = length; SEND;
2457	}	2073	}
2458		2074
		2075	eio_req eio_seek (int fd, off_t offset, int whence, int pri, eio_cb cb, void data)
		2076	{
		2077	REQ (EIO_SEEK); req->int1 = fd; req->offs = offset; req->int2 = whence; SEND;
		2078	}
		2079
2459	eio_req eio_read (int fd, void buf, size_t length, off_t offset, int pri, eio_cb cb, void *data)	2080	eio_req eio_read (int fd, void buf, size_t length, off_t offset, int pri, eio_cb cb, void *data)
2460	{	2081	{
2461	REQ (EIO_READ); req->int1 = fd; req->offs = offset; req->size = length; req->ptr2 = buf; SEND;	2082	REQ (EIO_READ); req->int1 = fd; req->offs = offset; req->size = length; req->ptr2 = buf; SEND;
2462	}	2083	}
2463		2084
2464	eio_req eio_write (int fd, void buf, size_t length, off_t offset, int pri, eio_cb cb, void *data)	2085	eio_req eio_write (int fd, void buf, size_t length, off_t offset, int pri, eio_cb cb, void *data)
2465	{	2086	{
2466	REQ (EIO_WRITE); req->int1 = fd; req->offs = offset; req->size = length; req->ptr2 = buf; SEND;	2087	REQ (EIO_WRITE); req->int1 = fd; req->offs = offset; req->size = length; req->ptr2 = buf; SEND;
		2088	}
		2089
		2090	eio_req eio_fcntl (int fd, int cmd, void arg, int pri, eio_cb cb, void *data)
		2091	{
		2092	REQ (EIO_IOCTL); req->int1 = fd; req->int2 = cmd; req->ptr2 = arg; SEND;
		2093	}
		2094
		2095	eio_req eio_ioctl (int fd, unsigned long request, void buf, int pri, eio_cb cb, void *data)
		2096	{
		2097	REQ (EIO_IOCTL); req->int1 = fd; req->int2 = request; req->ptr2 = buf; SEND;
2467	}	2098	}
2468		2099
2469	eio_req eio_fstat (int fd, int pri, eio_cb cb, void data)	2100	eio_req eio_fstat (int fd, int pri, eio_cb cb, void data)
2470	{	2101	{
2471	REQ (EIO_FSTAT); req->int1 = fd; SEND;	2102	REQ (EIO_FSTAT); req->int1 = fd; SEND;
…		…
2659	void	2290	void
2660	eio_grp_add (eio_req grp, eio_req req)	2291	eio_grp_add (eio_req grp, eio_req req)
2661	{	2292	{
2662	assert (("cannot add requests to IO::AIO::GRP after the group finished", grp->int1 != 2));	2293	assert (("cannot add requests to IO::AIO::GRP after the group finished", grp->int1 != 2));
2663		2294
2664	grp->flags \|= EIO_FLAG_GROUPADD;	2295	grp->flags \|= ETP_FLAG_GROUPADD;
2665		2296
2666	++grp->size;	2297	++grp->size;
2667	req->grp = grp;	2298	req->grp = grp;
2668		2299
2669	req->grp_prev = 0;	2300	req->grp_prev = 0;

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Comparing libeio/eio.c (file contents): Revision 1.104 by root, Mon Sep 26 16:54:25 2011 UTC vs. Revision 1.143 by root, Sat Dec 3 16:33:46 2016 UTC

Diff Legend

Comparing libeio/eio.c (file contents):
Revision 1.104 by root, Mon Sep 26 16:54:25 2011 UTC vs.
Revision 1.143 by root, Sat Dec 3 16:33:46 2016 UTC