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

Comparing libeio/eio.c (file contents):
Revision 1.112 by root, Fri Sep 30 20:49:57 2011 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 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	*
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	};
…		…
194	#define D_NAME(entp) entp.cFileName	231	#define D_NAME(entp) entp.cFileName
195	#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)
196		233
197	#else	234	#else
198		235
		236	#include <sys/ioctl.h>
199	#include <sys/time.h>	237	#include <sys/time.h>
200	#include <sys/select.h>	238	#include <sys/select.h>
201	#include <sys/statvfs.h>
202	#include <unistd.h>	239	#include <unistd.h>
203	#include <signal.h>	240	#include <signal.h>
204	#include <dirent.h>	241	#include <dirent.h>
205		242
		243	#ifdef ANDROID
		244	#include <sys/vfs.h>
		245	#define statvfs statfs
		246	#define fstatvfs fstatfs
		247	#include <asm/page.h> /* supposedly limits.h does #define PAGESIZE PAGESIZE */
		248	#else
		249	#include <sys/statvfs.h>
		250	#endif
		251
206	#if _POSIX_MEMLOCK \|\| _POSIX_MEMLOCK_RANGE \|\| _POSIX_MAPPED_FILES	252	#if _POSIX_MEMLOCK \|\| _POSIX_MEMLOCK_RANGE \|\| _POSIX_MAPPED_FILES
207	#include <sys/mman.h>	253	#include <sys/mman.h>
208	#endif	254	#endif
209		255
210	#define D_NAME(entp) entp->d_name	256	#define D_NAME(entp) entp->d_name
211		257
212	/* POSIX_SOURCE is useless on bsd's, and XOPEN_SOURCE is unreliable there, too */	258	/* POSIX_SOURCE is useless on bsd's, and XOPEN_SOURCE is unreliable there, too */
213	#if __FreeBSD__ \|\| defined __NetBSD__ \|\| defined __OpenBSD__	259	#if __FreeBSD__ \|\| __NetBSD__ \|\| __OpenBSD__
214	#define _DIRENT_HAVE_D_TYPE /* sigh */	260	#define _DIRENT_HAVE_D_TYPE /* sigh */
215	#define D_INO(de) (de)->d_fileno	261	#define D_INO(de) (de)->d_fileno
216	#define D_NAMLEN(de) (de)->d_namlen	262	#define D_NAMLEN(de) (de)->d_namlen
217	#elif __linux \|\| defined d_ino \|\| _XOPEN_SOURCE >= 600	263	#elif __linux \|\| defined d_ino \|\| _XOPEN_SOURCE >= 600
218	#define D_INO(de) (de)->d_ino	264	#define D_INO(de) (de)->d_ino
…		…
237	# include <utime.h>	283	# include <utime.h>
238	#endif	284	#endif
239		285
240	#if HAVE_SYS_SYSCALL_H	286	#if HAVE_SYS_SYSCALL_H
241	# include <sys/syscall.h>	287	# include <sys/syscall.h>
242	#endif
243
244	#if HAVE_SYS_PRCTL_H
245	# include <sys/prctl.h>
246	#endif	288	#endif
247		289
248	#if HAVE_SENDFILE	290	#if HAVE_SENDFILE
249	# if __linux	291	# if __linux
250	# include <sys/sendfile.h>	292	# include <sys/sendfile.h>
…		…
258	# else	300	# else
259	# error sendfile support requested but not available	301	# error sendfile support requested but not available
260	# endif	302	# endif
261	#endif	303	#endif
262		304
		305	#if HAVE_RENAMEAT2
		306	# include <sys/syscall.h>
		307	# include <linux/fs.h>
		308	#endif
		309
263	#ifndef D_TYPE	310	#ifndef D_TYPE
264	# define D_TYPE(de) 0	311	# define D_TYPE(de) 0
265	#endif	312	#endif
266	#ifndef D_INO	313	#ifndef D_INO
267	# define D_INO(de) 0	314	# define D_INO(de) 0
…		…
275	# define NAME_MAX 4096	322	# define NAME_MAX 4096
276	#endif	323	#endif
277		324
278	/* used for readlink etc. */	325	/* used for readlink etc. */
279	#ifndef PATH_MAX	326	#ifndef PATH_MAX
280	# define PATH_MAX 4096	327	# define PATH_MAX 0
281	#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)
282		339
283	/* buffer size for various temporary buffers */	340	/* buffer size for various temporary buffers */
284	#define EIO_BUFSIZE 65536	341	#define EIO_BUFSIZE 65536
285		342
286	#define dBUF \	343	#define dBUF \
287	char *eio_buf = malloc (EIO_BUFSIZE); \	344	char *eio_buf = malloc (EIO_BUFSIZE); \
288	errno = ENOMEM; \	345	errno = ENOMEM; \
289	if (!eio_buf) \	346	if (!eio_buf) \
290	return -1	347	return -1
291		348
292	#define FUBd \	349	#define FUBd \
293	free (eio_buf)	350	free (eio_buf)
294		351
295	#define EIO_TICKS ((1000000 + 1023) >> 10)
296
297	/*****************************************************************************/	352	/*****************************************************************************/
298		353
299	struct tmpbuf
300	{
301	void *ptr;
302	int len;
303	};
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
317	struct tmpbuf;	354	struct etp_tmpbuf;
318		355
319	#if _POSIX_VERSION >= 200809L	356	#if _POSIX_VERSION >= 200809L
320	#define HAVE_AT 1	357	#define HAVE_AT 1
321	#define WD2FD(wd) ((wd) ? (wd)->fd : AT_FDCWD)	358	#define WD2FD(wd) ((wd) ? (wd)->fd : AT_FDCWD)
322	#ifndef O_SEARCH	359	#ifndef O_SEARCH
323	#define O_SEARCH O_RDONLY	360	#define O_SEARCH O_RDONLY
324	#endif	361	#endif
325	#else	362	#else
326	#define HAVE_AT 0	363	#define HAVE_AT 0
327	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);
328	#endif	365	#endif
329		366
330	struct eio_pwd	367	struct eio_pwd
331	{	368	{
332	#if HAVE_AT	369	#if HAVE_AT
…		…
339	/*****************************************************************************/	376	/*****************************************************************************/
340		377
341	#define ETP_PRI_MIN EIO_PRI_MIN	378	#define ETP_PRI_MIN EIO_PRI_MIN
342	#define ETP_PRI_MAX EIO_PRI_MAX	379	#define ETP_PRI_MAX EIO_PRI_MAX
343		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
344	struct etp_worker;	391	struct etp_worker;
345
346	#define ETP_REQ eio_req	392	#define ETP_REQ eio_req
347	#define ETP_DESTROY(req) eio_destroy (req)	393	#define ETP_DESTROY(req) eio_destroy (req)
348	static int eio_finish (eio_req *req);	394	static int eio_finish (eio_req *req);
349	#define ETP_FINISH(req) eio_finish (req)	395	#define ETP_FINISH(req) eio_finish (req)
350	static void eio_execute (struct etp_worker self, eio_req req);	396	static void eio_execute (struct etp_worker self, eio_req req);
351	#define ETP_EXECUTE(wrk,req) eio_execute (wrk,req)	397	#define ETP_EXECUTE(wrk,req) eio_execute (wrk, req)
352		398
353	/*****************************************************************************/	399	#include "etp.c"
354		400
355	#define ETP_NUM_PRI (ETP_PRI_MAX - ETP_PRI_MIN + 1)	401	static struct etp_pool eio_pool;
356		402	#define EIO_POOL (&eio_pool)
357	/* calculate time difference in ~1/EIO_TICKS of a second */
358	ecb_inline int
359	tvdiff (struct timeval tv1, struct timeval tv2)
360	{
361	return (tv2->tv_sec - tv1->tv_sec ) * EIO_TICKS
362	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
363	}
364
365	static unsigned int started, idle, wanted = 4;
366
367	static void (*want_poll_cb) (void);
368	static void (*done_poll_cb) (void);
369
370	static unsigned int max_poll_time; /* reslock */
371	static unsigned int max_poll_reqs; /* reslock */
372
373	static unsigned int nreqs; /* reqlock */
374	static unsigned int nready; /* reqlock */
375	static unsigned int npending; /* reqlock */
376	static unsigned int max_idle = 4; /* maximum number of threads that can idle indefinitely */
377	static unsigned int idle_timeout = 10; /* number of seconds after which an idle threads exit */
378
379	static xmutex_t wrklock;
380	static xmutex_t reslock;
381	static xmutex_t reqlock;
382	static xcond_t reqwait;
383
384	#if !HAVE_PREADWRITE
385	/*
386	* make our pread/pwrite emulation safe against themselves, but not against
387	* normal read/write by using a mutex. slows down execution a lot,
388	* but that's your problem, not mine.
389	*/
390	static xmutex_t preadwritelock;
391	#endif
392
393	typedef struct etp_worker
394	{
395	struct tmpbuf tmpbuf;
396
397	/* locked by wrklock */
398	struct etp_worker prev, next;
399
400	xthread_t tid;
401
402	#ifdef ETP_WORKER_COMMON
403	ETP_WORKER_COMMON
404	#endif
405	} etp_worker;
406
407	static etp_worker wrk_first; /* NOT etp */
408
409	#define ETP_WORKER_LOCK(wrk) X_LOCK (wrklock)
410	#define ETP_WORKER_UNLOCK(wrk) X_UNLOCK (wrklock)
411
412	/* worker threads management */
413
414	static void
415	etp_worker_clear (etp_worker *wrk)
416	{
417	}
418
419	static void ecb_cold
420	etp_worker_free (etp_worker *wrk)
421	{
422	free (wrk->tmpbuf.ptr);
423
424	wrk->next->prev = wrk->prev;
425	wrk->prev->next = wrk->next;
426
427	free (wrk);
428	}
429
430	static unsigned int
431	etp_nreqs (void)
432	{
433	int retval;
434	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
435	retval = nreqs;
436	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
437	return retval;
438	}
439
440	static unsigned int
441	etp_nready (void)
442	{
443	unsigned int retval;
444
445	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
446	retval = nready;
447	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
448
449	return retval;
450	}
451
452	static unsigned int
453	etp_npending (void)
454	{
455	unsigned int retval;
456
457	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
458	retval = npending;
459	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
460
461	return retval;
462	}
463
464	static unsigned int
465	etp_nthreads (void)
466	{
467	unsigned int retval;
468
469	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
470	retval = started;
471	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
472
473	return retval;
474	}
475
476	/*
477	* a somewhat faster data structure might be nice, but
478	* with 8 priorities this actually needs <20 insns
479	* per shift, the most expensive operation.
480	*/
481	typedef struct {
482	ETP_REQ qs[ETP_NUM_PRI], qe[ETP_NUM_PRI]; /* qstart, qend */
483	int size;
484	} etp_reqq;
485
486	static etp_reqq req_queue;
487	static etp_reqq res_queue;
488
489	static void ecb_noinline ecb_cold
490	reqq_init (etp_reqq *q)
491	{
492	int pri;
493
494	for (pri = 0; pri < ETP_NUM_PRI; ++pri)
495	q->qs[pri] = q->qe[pri] = 0;
496
497	q->size = 0;
498	}
499
500	static int ecb_noinline
501	reqq_push (etp_reqq q, ETP_REQ req)
502	{
503	int pri = req->pri;
504	req->next = 0;
505
506	if (q->qe[pri])
507	{
508	q->qe[pri]->next = req;
509	q->qe[pri] = req;
510	}
511	else
512	q->qe[pri] = q->qs[pri] = req;
513
514	return q->size++;
515	}
516
517	static ETP_REQ * ecb_noinline
518	reqq_shift (etp_reqq *q)
519	{
520	int pri;
521
522	if (!q->size)
523	return 0;
524
525	--q->size;
526
527	for (pri = ETP_NUM_PRI; pri--; )
528	{
529	eio_req *req = q->qs[pri];
530
531	if (req)
532	{
533	if (!(q->qs[pri] = (eio_req *)req->next))
534	q->qe[pri] = 0;
535
536	return req;
537	}
538	}
539
540	abort ();
541	}
542
543	static int ecb_cold
544	etp_init (void (want_poll)(void), void (done_poll)(void))
545	{
546	X_MUTEX_CREATE (wrklock);
547	X_MUTEX_CREATE (reslock);
548	X_MUTEX_CREATE (reqlock);
549	X_COND_CREATE (reqwait);
550
551	reqq_init (&req_queue);
552	reqq_init (&res_queue);
553
554	wrk_first.next =
555	wrk_first.prev = &wrk_first;
556
557	started = 0;
558	idle = 0;
559	nreqs = 0;
560	nready = 0;
561	npending = 0;
562
563	want_poll_cb = want_poll;
564	done_poll_cb = done_poll;
565
566	return 0;
567	}
568
569	X_THREAD_PROC (etp_proc);
570
571	static void ecb_cold
572	etp_start_thread (void)
573	{
574	etp_worker *wrk = calloc (1, sizeof (etp_worker));
575
576	/TODO/
577	assert (("unable to allocate worker thread data", wrk));
578
579	X_LOCK (wrklock);
580
581	if (thread_create (&wrk->tid, etp_proc, (void *)wrk))
582	{
583	wrk->prev = &wrk_first;
584	wrk->next = wrk_first.next;
585	wrk_first.next->prev = wrk;
586	wrk_first.next = wrk;
587	++started;
588	}
589	else
590	free (wrk);
591
592	X_UNLOCK (wrklock);
593	}
594
595	static void
596	etp_maybe_start_thread (void)
597	{
598	if (ecb_expect_true (etp_nthreads () >= wanted))
599	return;
600
601	/* todo: maybe use idle here, but might be less exact */
602	if (ecb_expect_true (0 <= (int)etp_nthreads () + (int)etp_npending () - (int)etp_nreqs ()))
603	return;
604
605	etp_start_thread ();
606	}
607
608	static void ecb_cold
609	etp_end_thread (void)
610	{
611	eio_req req = calloc (1, sizeof (eio_req)); / will be freed by worker */
612
613	req->type = -1;
614	req->pri = ETP_PRI_MAX - ETP_PRI_MIN;
615
616	X_LOCK (reqlock);
617	reqq_push (&req_queue, req);
618	X_COND_SIGNAL (reqwait);
619	X_UNLOCK (reqlock);
620
621	X_LOCK (wrklock);
622	--started;
623	X_UNLOCK (wrklock);
624	}
625
626	static int
627	etp_poll (void)
628	{
629	unsigned int maxreqs;
630	unsigned int maxtime;
631	struct timeval tv_start, tv_now;
632
633	X_LOCK (reslock);
634	maxreqs = max_poll_reqs;
635	maxtime = max_poll_time;
636	X_UNLOCK (reslock);
637
638	if (maxtime)
639	gettimeofday (&tv_start, 0);
640
641	for (;;)
642	{
643	ETP_REQ *req;
644
645	etp_maybe_start_thread ();
646
647	X_LOCK (reslock);
648	req = reqq_shift (&res_queue);
649
650	if (req)
651	{
652	--npending;
653
654	if (!res_queue.size && done_poll_cb)
655	done_poll_cb ();
656	}
657
658	X_UNLOCK (reslock);
659
660	if (!req)
661	return 0;
662
663	X_LOCK (reqlock);
664	--nreqs;
665	X_UNLOCK (reqlock);
666
667	if (ecb_expect_false (req->type == EIO_GROUP && req->size))
668	{
669	req->int1 = 1; /* mark request as delayed */
670	continue;
671	}
672	else
673	{
674	int res = ETP_FINISH (req);
675	if (ecb_expect_false (res))
676	return res;
677	}
678
679	if (ecb_expect_false (maxreqs && !--maxreqs))
680	break;
681
682	if (maxtime)
683	{
684	gettimeofday (&tv_now, 0);
685
686	if (tvdiff (&tv_start, &tv_now) >= maxtime)
687	break;
688	}
689	}
690
691	errno = EAGAIN;
692	return -1;
693	}
694
695	static void
696	etp_cancel (ETP_REQ *req)
697	{
698	req->cancelled = 1;
699
700	eio_grp_cancel (req);
701	}
702
703	static void
704	etp_submit (ETP_REQ *req)
705	{
706	req->pri -= ETP_PRI_MIN;
707
708	if (ecb_expect_false (req->pri < ETP_PRI_MIN - ETP_PRI_MIN)) req->pri = ETP_PRI_MIN - ETP_PRI_MIN;
709	if (ecb_expect_false (req->pri > ETP_PRI_MAX - ETP_PRI_MIN)) req->pri = ETP_PRI_MAX - ETP_PRI_MIN;
710
711	if (ecb_expect_false (req->type == EIO_GROUP))
712	{
713	/* I hope this is worth it :/ */
714	X_LOCK (reqlock);
715	++nreqs;
716	X_UNLOCK (reqlock);
717
718	X_LOCK (reslock);
719
720	++npending;
721
722	if (!reqq_push (&res_queue, req) && want_poll_cb)
723	want_poll_cb ();
724
725	X_UNLOCK (reslock);
726	}
727	else
728	{
729	X_LOCK (reqlock);
730	++nreqs;
731	++nready;
732	reqq_push (&req_queue, req);
733	X_COND_SIGNAL (reqwait);
734	X_UNLOCK (reqlock);
735
736	etp_maybe_start_thread ();
737	}
738	}
739
740	static void ecb_cold
741	etp_set_max_poll_time (double nseconds)
742	{
743	if (WORDACCESS_UNSAFE) X_LOCK (reslock);
744	max_poll_time = nseconds * EIO_TICKS;
745	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);
746	}
747
748	static void ecb_cold
749	etp_set_max_poll_reqs (unsigned int maxreqs)
750	{
751	if (WORDACCESS_UNSAFE) X_LOCK (reslock);
752	max_poll_reqs = maxreqs;
753	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);
754	}
755
756	static void ecb_cold
757	etp_set_max_idle (unsigned int nthreads)
758	{
759	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
760	max_idle = nthreads;
761	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
762	}
763
764	static void ecb_cold
765	etp_set_idle_timeout (unsigned int seconds)
766	{
767	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
768	idle_timeout = seconds;
769	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
770	}
771
772	static void ecb_cold
773	etp_set_min_parallel (unsigned int nthreads)
774	{
775	if (wanted < nthreads)
776	wanted = nthreads;
777	}
778
779	static void ecb_cold
780	etp_set_max_parallel (unsigned int nthreads)
781	{
782	if (wanted > nthreads)
783	wanted = nthreads;
784
785	while (started > wanted)
786	etp_end_thread ();
787	}
788		403
789	/*****************************************************************************/	404	/*****************************************************************************/
790		405
791	static void	406	static void
792	grp_try_feed (eio_req *grp)	407	grp_try_feed (eio_req *grp)
793	{	408	{
794	while (grp->size < grp->int2 && !EIO_CANCELLED (grp))	409	while (grp->size < grp->int2 && !EIO_CANCELLED (grp))
795	{	410	{
796	grp->flags &= ~EIO_FLAG_GROUPADD;	411	grp->flags &= ~ETP_FLAG_GROUPADD;
797		412
798	EIO_FEED (grp);	413	EIO_FEED (grp);
799		414
800	/* stop if no progress has been made */	415	/* stop if no progress has been made */
801	if (!(grp->flags & EIO_FLAG_GROUPADD))	416	if (!(grp->flags & ETP_FLAG_GROUPADD))
802	{	417	{
803	grp->feed = 0;	418	grp->feed = 0;
804	break;	419	break;
805	}	420	}
806	}	421	}
…		…
813		428
814	/* call feeder, if applicable */	429	/* call feeder, if applicable */
815	grp_try_feed (grp);	430	grp_try_feed (grp);
816		431
817	/* finish, if done */	432	/* finish, if done */
818	if (!grp->size && grp->int1)	433	if (!grp->size && grp->flags & ETP_FLAG_DELAYED)
819	return eio_finish (grp);	434	return eio_finish (grp);
820	else	435	else
821	return 0;	436	return 0;
822	}	437	}
823		438
…		…
859	}	474	}
860		475
861	void	476	void
862	eio_grp_cancel (eio_req *grp)	477	eio_grp_cancel (eio_req *grp)
863	{	478	{
864	for (grp = grp->grp_first; grp; grp = grp->grp_next)	479	etp_grp_cancel (EIO_POOL, grp);
865	eio_cancel (grp);
866	}	480	}
867		481
868	void	482	void
869	eio_cancel (eio_req *req)	483	eio_cancel (eio_req *req)
870	{	484	{
871	etp_cancel (req);	485	etp_cancel (EIO_POOL, req);
872	}	486	}
873		487
874	void	488	void
875	eio_submit (eio_req *req)	489	eio_submit (eio_req *req)
876	{	490	{
877	etp_submit (req);	491	etp_submit (EIO_POOL, req);
878	}	492	}
879		493
880	unsigned int	494	unsigned int
881	eio_nreqs (void)	495	eio_nreqs (void)
882	{	496	{
883	return etp_nreqs ();	497	return etp_nreqs (EIO_POOL);
884	}	498	}
885		499
886	unsigned int	500	unsigned int
887	eio_nready (void)	501	eio_nready (void)
888	{	502	{
889	return etp_nready ();	503	return etp_nready (EIO_POOL);
890	}	504	}
891		505
892	unsigned int	506	unsigned int
893	eio_npending (void)	507	eio_npending (void)
894	{	508	{
895	return etp_npending ();	509	return etp_npending (EIO_POOL);
896	}	510	}
897		511
898	unsigned int ecb_cold	512	unsigned int ecb_cold
899	eio_nthreads (void)	513	eio_nthreads (void)
900	{	514	{
901	return etp_nthreads ();	515	return etp_nthreads (EIO_POOL);
902	}	516	}
903		517
904	void ecb_cold	518	void ecb_cold
905	eio_set_max_poll_time (double nseconds)	519	eio_set_max_poll_time (double nseconds)
906	{	520	{
907	etp_set_max_poll_time (nseconds);	521	etp_set_max_poll_time (EIO_POOL, nseconds);
908	}	522	}
909		523
910	void ecb_cold	524	void ecb_cold
911	eio_set_max_poll_reqs (unsigned int maxreqs)	525	eio_set_max_poll_reqs (unsigned int maxreqs)
912	{	526	{
913	etp_set_max_poll_reqs (maxreqs);	527	etp_set_max_poll_reqs (EIO_POOL, maxreqs);
914	}	528	}
915		529
916	void ecb_cold	530	void ecb_cold
917	eio_set_max_idle (unsigned int nthreads)	531	eio_set_max_idle (unsigned int nthreads)
918	{	532	{
919	etp_set_max_idle (nthreads);	533	etp_set_max_idle (EIO_POOL, nthreads);
920	}	534	}
921		535
922	void ecb_cold	536	void ecb_cold
923	eio_set_idle_timeout (unsigned int seconds)	537	eio_set_idle_timeout (unsigned int seconds)
924	{	538	{
925	etp_set_idle_timeout (seconds);	539	etp_set_idle_timeout (EIO_POOL, seconds);
926	}	540	}
927		541
928	void ecb_cold	542	void ecb_cold
929	eio_set_min_parallel (unsigned int nthreads)	543	eio_set_min_parallel (unsigned int nthreads)
930	{	544	{
931	etp_set_min_parallel (nthreads);	545	etp_set_min_parallel (EIO_POOL, nthreads);
932	}	546	}
933		547
934	void ecb_cold	548	void ecb_cold
935	eio_set_max_parallel (unsigned int nthreads)	549	eio_set_max_parallel (unsigned int nthreads)
936	{	550	{
937	etp_set_max_parallel (nthreads);	551	etp_set_max_parallel (EIO_POOL, nthreads);
938	}	552	}
939		553
940	int eio_poll (void)	554	int eio_poll (void)
941	{	555	{
942	return etp_poll ();	556	return etp_poll (EIO_POOL);
943	}	557	}
944		558
945	/*****************************************************************************/	559	/*****************************************************************************/
946	/* work around various missing functions */	560	/* work around various missing functions */
947		561
948	#if !HAVE_PREADWRITE	562	#if HAVE_POSIX_CLOSE && !__linux
949	# undef pread	563	# define eio__close(fd) posix_close (fd, 0)
950	# undef pwrite	564	#else
951	# define pread eio__pread	565	# define eio__close(fd) close (fd)
952	# define pwrite eio__pwrite
953
954	static eio_ssize_t
955	eio__pread (int fd, void *buf, size_t count, off_t offset)
956	{
957	eio_ssize_t res;
958	off_t ooffset;
959
960	X_LOCK (preadwritelock);
961	ooffset = lseek (fd, 0, SEEK_CUR);
962	lseek (fd, offset, SEEK_SET);
963	res = read (fd, buf, count);
964	lseek (fd, ooffset, SEEK_SET);
965	X_UNLOCK (preadwritelock);
966
967	return res;
968	}
969
970	static eio_ssize_t
971	eio__pwrite (int fd, void *buf, size_t count, off_t offset)
972	{
973	eio_ssize_t res;
974	off_t ooffset;
975
976	X_LOCK (preadwritelock);
977	ooffset = lseek (fd, 0, SEEK_CUR);
978	lseek (fd, offset, SEEK_SET);
979	res = write (fd, buf, count);
980	lseek (fd, ooffset, SEEK_SET);
981	X_UNLOCK (preadwritelock);
982
983	return res;
984	}
985	#endif	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	}
986		576
987	#ifndef HAVE_UTIMES	577	#ifndef HAVE_UTIMES
988		578
989	# undef utimes	579	# undef utimes
990	# define utimes(path,times) eio__utimes (path, times)	580	# define utimes(path,times) eio__utimes (path, times)
…		…
1032	int res;	622	int res;
1033		623
1034	#if HAVE_SYS_SYNCFS	624	#if HAVE_SYS_SYNCFS
1035	res = (int)syscall (__NR_syncfs, (int)(fd));	625	res = (int)syscall (__NR_syncfs, (int)(fd));
1036	#else	626	#else
1037	res = -1;	627	res = EIO_ENOSYS ();
1038	errno = ENOSYS;
1039	#endif	628	#endif
1040		629
1041	if (res < 0 && errno == ENOSYS && fd >= 0)	630	if (res < 0 && errno == ENOSYS && fd >= 0)
1042	sync ();	631	sync ();
1043		632
…		…
1073	}	662	}
1074		663
1075	static int	664	static int
1076	eio__fallocate (int fd, int mode, off_t offset, size_t len)	665	eio__fallocate (int fd, int mode, off_t offset, size_t len)
1077	{	666	{
1078	#if HAVE_FALLOCATE	667	#if HAVE_LINUX_FALLOCATE
1079	return fallocate (fd, mode, offset, len);	668	return fallocate (fd, mode, offset, len);
1080	#else	669	#else
1081	errno = ENOSYS;	670	return EIO_ENOSYS ();
1082	return -1;
1083	#endif	671	#endif
1084	}	672	}
1085		673
1086	#if !HAVE_READAHEAD	674	#if !HAVE_READAHEAD
1087	# undef readahead	675	# undef readahead
…		…
1102	todo -= len;	690	todo -= len;
1103	}	691	}
1104		692
1105	FUBd;	693	FUBd;
1106		694
1107	errno = 0;	695	/* linux's readahead basically only fails for EBADF or EINVAL (not mmappable) */
		696	/* but not for e.g. EIO or eof, so we also never fail */
1108	return count;	697	return 0;
1109	}	698	}
1110		699
1111	#endif	700	#endif
1112		701
1113	/* sendfile always needs emulation */	702	/* sendfile always needs emulation */
…		…
1148		737
1149	/* according to source inspection, this is correct, and useful behaviour */	738	/* according to source inspection, this is correct, and useful behaviour */
1150	if (sbytes)	739	if (sbytes)
1151	res = sbytes;	740	res = sbytes;
1152		741
1153	# elif defined (__APPLE__)	742	# elif defined __APPLE__
1154	off_t sbytes = count;	743	off_t sbytes = count;
1155	res = sendfile (ifd, ofd, offset, &sbytes, 0, 0);	744	res = sendfile (ifd, ofd, offset, &sbytes, 0, 0);
1156		745
1157	/* according to the manpage, sbytes is always valid */	746	/* according to the manpage, sbytes is always valid */
1158	if (sbytes)	747	if (sbytes)
…		…
1185	HANDLE h = TO_SOCKET (ifd);	774	HANDLE h = TO_SOCKET (ifd);
1186	SetFilePointer (h, offset, 0, FILE_BEGIN);	775	SetFilePointer (h, offset, 0, FILE_BEGIN);
1187	res = TransmitFile (TO_SOCKET (ofd), h, count, 0, 0, 0, 0);	776	res = TransmitFile (TO_SOCKET (ofd), h, count, 0, 0, 0, 0);
1188		777
1189	#else	778	#else
1190	res = -1;	779	res = EIO_ENOSYS ();
1191	errno = ENOSYS;
1192	#endif	780	#endif
1193		781
1194	/* we assume sendfile can copy at least 128mb in one go */	782	/* we assume sendfile can copy at least 128mb in one go */
1195	if (res <= 128 * 1024 * 1024)	783	if (res <= 128 * 1024 * 1024)
1196	{	784	{
…		…
1371	intptr_t end = addr + len;	959	intptr_t end = addr + len;
1372	intptr_t page = eio_pagesize ();	960	intptr_t page = eio_pagesize ();
1373		961
1374	if (addr < end)	962	if (addr < end)
1375	if (flags & EIO_MT_MODIFY) /* modify */	963	if (flags & EIO_MT_MODIFY) /* modify */
1376	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));
1377	else	965	else
1378	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));
1379	}	967	}
1380		968
1381	return 0;	969	return 0;
1382	}	970	}
1383		971
1384	/*****************************************************************************/	972	/*****************************************************************************/
1385	/* requests implemented outside eio_execute, because they are so large */	973	/* requests implemented outside eio_execute, because they are so large */
1386		974
		975	static void
		976	eio__lseek (eio_req *req)
		977	{
		978	/* this usually gets optimised away completely, or your compiler sucks, */
		979	/* or the whence constants really are not 0, 1, 2 */
		980	int whence = req->int2 == EIO_SEEK_SET ? SEEK_SET
		981	: req->int2 == EIO_SEEK_CUR ? SEEK_CUR
		982	: req->int2 == EIO_SEEK_END ? SEEK_END
		983	: req->int2;
		984
		985	req->offs = lseek (req->int1, req->offs, whence);
		986	req->result = req->offs == (off_t)-1 ? -1 : 0;
		987	}
		988
1387	/* 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 */
1388	static int	990	static int
1389	eio__realpath (struct tmpbuf tmpbuf, eio_wd wd, const char path)	991	eio__realpath (struct etp_tmpbuf tmpbuf, eio_wd wd, const char path)
1390	{	992	{
		993	char *res;
1391	const char *rel = path;	994	const char *rel = path;
1392	char *res;
1393	char tmp1, tmp2;	995	char tmp1, tmp2;
1394	#if SYMLOOP_MAX > 32	996	#if SYMLOOP_MAX > 32
1395	int symlinks = SYMLOOP_MAX;	997	int symlinks = SYMLOOP_MAX;
1396	#else	998	#else
1397	int symlinks = 32;	999	int symlinks = 32;
…		…
1403		1005
1404	errno = ENOENT;	1006	errno = ENOENT;
1405	if (!*rel)	1007	if (!*rel)
1406	return -1;	1008	return -1;
1407		1009
1408	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
1409	tmp1 = res + PATH_MAX;	1028	tmp1 = res + EIO_PATH_MAX;
1410	tmp2 = tmp1 + PATH_MAX;	1029	tmp2 = tmp1 + EIO_PATH_MAX;
1411		1030
1412	#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 */
1413	#if __linux && defined(O_NONBLOCK) && defined(O_NOATIME)	1032	#if __linux && defined(O_NONBLOCK) && defined(O_NOATIME)
1414	/* on linux we may be able to ask the kernel */	1033	/* on linux we may be able to ask the kernel */
1415	{	1034	{
1416	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);
1417		1036
1418	if (fd >= 0)	1037	if (fd >= 0)
1419	{	1038	{
1420	sprintf (tmp1, "/proc/self/fd/%d", fd);	1039	sprintf (tmp1, "/proc/self/fd/%d", fd);
1421	req->result = readlink (tmp1, res, PATH_MAX);	1040	req->result = readlink (tmp1, res, EIO_PATH_MAX);
1422	close (fd);
1423
1424	/* 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 */
		1042	eio__close (fd);
1425		1043
1426	if (req->result > 0)	1044	if (req->result > 0)
1427	goto done;	1045	goto done;
1428	}	1046	}
1429	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)
1430	return;	1048	return -1;
1431	}	1049	}
1432	#endif	1050	#endif
1433	#endif	1051	#endif
1434		1052
1435	if (*rel != '/')	1053	if (*rel != '/')
…		…
1440	if (wd == EIO_INVALID_WD)	1058	if (wd == EIO_INVALID_WD)
1441	return -1;	1059	return -1;
1442		1060
1443	if (wd == EIO_CWD)	1061	if (wd == EIO_CWD)
1444	{	1062	{
1445	if (!getcwd (res, PATH_MAX))	1063	if (!getcwd (res, EIO_PATH_MAX))
1446	return -1;	1064	return -1;
1447		1065
1448	len = strlen (res);	1066	len = strlen (res);
1449	}	1067	}
1450	else	1068	else
…		…
1487	}	1105	}
1488	}	1106	}
1489		1107
1490	errno = ENAMETOOLONG;	1108	errno = ENAMETOOLONG;
1491	if (res + 1 + len + 1 >= tmp1)	1109	if (res + 1 + len + 1 >= tmp1)
1492	return;	1110	return -1;
1493		1111
1494	/* copy one component */	1112	/* copy one component */
1495	*res = '/';	1113	*res = '/';
1496	memcpy (res + 1, beg, len);	1114	memcpy (res + 1, beg, len);
1497		1115
1498	/* zero-terminate, for readlink */	1116	/* zero-terminate, for readlink */
1499	res [len + 1] = 0;	1117	res [len + 1] = 0;
1500		1118
1501	/* now check if it's a symlink */	1119	/* now check if it's a symlink */
1502	linklen = readlink (tmpbuf->ptr, tmp1, PATH_MAX);	1120	linklen = readlink (tmpbuf->ptr, tmp1, EIO_PATH_MAX);
1503		1121
1504	if (linklen < 0)	1122	if (linklen < 0)
1505	{	1123	{
1506	if (errno != EINVAL)	1124	if (errno != EINVAL)
1507	return -1;	1125	return -1;
…		…
1513	{	1131	{
1514	/* yay, it was a symlink - build new path in tmp2 */	1132	/* yay, it was a symlink - build new path in tmp2 */
1515	int rellen = strlen (rel);	1133	int rellen = strlen (rel);
1516		1134
1517	errno = ENAMETOOLONG;	1135	errno = ENAMETOOLONG;
1518	if (linklen + 1 + rellen >= PATH_MAX)	1136	if (linklen + 1 + rellen >= EIO_PATH_MAX) /* also catch linklen >= EIO_PATH_MAX */
1519	return -1;	1137	return -1;
1520		1138
1521	errno = ELOOP;	1139	errno = ELOOP;
1522	if (!--symlinks)	1140	if (!--symlinks)
1523	return -1;	1141	return -1;
…		…
1537	/* special case for the lone root path */	1155	/* special case for the lone root path */
1538	if (res == tmpbuf->ptr)	1156	if (res == tmpbuf->ptr)
1539	*res++ = '/';	1157	*res++ = '/';
1540		1158
1541	return res - (char *)tmpbuf->ptr;	1159	return res - (char *)tmpbuf->ptr;
		1160	#endif
1542	}	1161	}
1543		1162
1544	static signed char	1163	static signed char
1545	eio_dent_cmp (const eio_dirent a, const eio_dirent b)	1164	eio_dent_cmp (const eio_dirent a, const eio_dirent b)
1546	{	1165	{
…		…
1786	return;	1405	return;
1787		1406
1788	dirp = fdopendir (fd);	1407	dirp = fdopendir (fd);
1789		1408
1790	if (!dirp)	1409	if (!dirp)
1791	close (fd);	1410	silent_close (fd);
1792	}	1411	}
1793	else	1412	else
1794	dirp = opendir (req->ptr1);	1413	dirp = opendir (req->ptr1);
1795	#else	1414	#else
1796	dirp = opendir (wd_expand (&self->tmpbuf, req->wd, req->ptr1));	1415	dirp = opendir (wd_expand (&self->tmpbuf, req->wd, req->ptr1));
…		…
1919	#ifdef DT_FIFO	1538	#ifdef DT_FIFO
1920	case DT_FIFO: ent->type = EIO_DT_FIFO; break;	1539	case DT_FIFO: ent->type = EIO_DT_FIFO; break;
1921	#endif	1540	#endif
1922	#ifdef DT_CHR	1541	#ifdef DT_CHR
1923	case DT_CHR: ent->type = EIO_DT_CHR; break;	1542	case DT_CHR: ent->type = EIO_DT_CHR; break;
1924	#endif	1543	#endif
1925	#ifdef DT_MPC	1544	#ifdef DT_MPC
1926	case DT_MPC: ent->type = EIO_DT_MPC; break;	1545	case DT_MPC: ent->type = EIO_DT_MPC; break;
1927	#endif	1546	#endif
1928	#ifdef DT_DIR	1547	#ifdef DT_DIR
1929	case DT_DIR: ent->type = EIO_DT_DIR; break;	1548	case DT_DIR: ent->type = EIO_DT_DIR; break;
1930	#endif	1549	#endif
1931	#ifdef DT_NAM	1550	#ifdef DT_NAM
1932	case DT_NAM: ent->type = EIO_DT_NAM; break;	1551	case DT_NAM: ent->type = EIO_DT_NAM; break;
1933	#endif	1552	#endif
1934	#ifdef DT_BLK	1553	#ifdef DT_BLK
1935	case DT_BLK: ent->type = EIO_DT_BLK; break;	1554	case DT_BLK: ent->type = EIO_DT_BLK; break;
1936	#endif	1555	#endif
1937	#ifdef DT_MPB	1556	#ifdef DT_MPB
1938	case DT_MPB: ent->type = EIO_DT_MPB; break;	1557	case DT_MPB: ent->type = EIO_DT_MPB; break;
1939	#endif	1558	#endif
1940	#ifdef DT_REG	1559	#ifdef DT_REG
1941	case DT_REG: ent->type = EIO_DT_REG; break;	1560	case DT_REG: ent->type = EIO_DT_REG; break;
1942	#endif	1561	#endif
1943	#ifdef DT_NWK	1562	#ifdef DT_NWK
1944	case DT_NWK: ent->type = EIO_DT_NWK; break;	1563	case DT_NWK: ent->type = EIO_DT_NWK; break;
1945	#endif	1564	#endif
1946	#ifdef DT_CMP	1565	#ifdef DT_CMP
1947	case DT_CMP: ent->type = EIO_DT_CMP; break;	1566	case DT_CMP: ent->type = EIO_DT_CMP; break;
1948	#endif	1567	#endif
1949	#ifdef DT_LNK	1568	#ifdef DT_LNK
1950	case DT_LNK: ent->type = EIO_DT_LNK; break;	1569	case DT_LNK: ent->type = EIO_DT_LNK; break;
1951	#endif	1570	#endif
1952	#ifdef DT_SOCK	1571	#ifdef DT_SOCK
1953	case DT_SOCK: ent->type = EIO_DT_SOCK; break;	1572	case DT_SOCK: ent->type = EIO_DT_SOCK; break;
…		…
1966	{	1585	{
1967	if (ent->type == EIO_DT_UNKNOWN)	1586	if (ent->type == EIO_DT_UNKNOWN)
1968	{	1587	{
1969	if (name == '.') / leading dots are likely directories, and, in any case, rare */	1588	if (name == '.') / leading dots are likely directories, and, in any case, rare */
1970	ent->score = 1;	1589	ent->score = 1;
1971	else if (!strchr (name, '.')) /* absense of dots indicate likely dirs */	1590	else if (!strchr (name, '.')) /* absence of dots indicate likely dirs */
1972	ent->score = len <= 2 ? 4 - len : len <= 4 ? 4 : len <= 7 ? 5 : 6; /* shorter == more likely dir, but avoid too many classes */	1591	ent->score = len <= 2 ? 4 - len : len <= 4 ? 4 : len <= 7 ? 5 : 6; /* shorter == more likely dir, but avoid too many classes */
1973	}	1592	}
1974	else if (ent->type == EIO_DT_DIR)	1593	else if (ent->type == EIO_DT_DIR)
1975	ent->score = 0;	1594	ent->score = 0;
1976	}	1595	}
…		…
2005	#if !HAVE_AT	1624	#if !HAVE_AT
2006		1625
2007	/* 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 */
2008	/* an absolute or canonical path */	1627	/* an absolute or canonical path */
2009	static const char *	1628	static const char *
2010	wd_expand (struct tmpbuf tmpbuf, eio_wd wd, const char path)	1629	wd_expand (struct etp_tmpbuf tmpbuf, eio_wd wd, const char path)
2011	{	1630	{
2012	if (!wd \|\| *path == '/')	1631	if (!wd \|\| *path == '/')
2013	return path;	1632	return path;
2014		1633
2015	if (path [0] == '.' && !path [1])	1634	if (path [0] == '.' && !path [1])
…		…
2017		1636
2018	{	1637	{
2019	int l1 = wd->len;	1638	int l1 = wd->len;
2020	int l2 = strlen (path);	1639	int l2 = strlen (path);
2021		1640
2022	char *res = tmpbuf_get (tmpbuf, l1 + l2 + 2);	1641	char *res = etp_tmpbuf_get (tmpbuf, l1 + l2 + 2);
2023		1642
2024	memcpy (res, wd->str, l1);	1643	memcpy (res, wd->str, l1);
2025	res [l1] = '/';	1644	res [l1] = '/';
2026	memcpy (res + l1 + 1, path, l2 + 1);	1645	memcpy (res + l1 + 1, path, l2 + 1);
2027		1646
…		…
2030	}	1649	}
2031		1650
2032	#endif	1651	#endif
2033		1652
2034	static eio_wd	1653	static eio_wd
2035	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)
2036	{	1655	{
2037	int fd;	1656	int fd;
2038	eio_wd res;	1657	eio_wd res;
2039	int len = eio__realpath (tmpbuf, wd, path);	1658	int len = eio__realpath (tmpbuf, wd, path);
2040		1659
…		…
2062	}	1681	}
2063		1682
2064	eio_wd	1683	eio_wd
2065	eio_wd_open_sync (eio_wd wd, const char *path)	1684	eio_wd_open_sync (eio_wd wd, const char *path)
2066	{	1685	{
2067	struct tmpbuf tmpbuf = { 0 };	1686	struct etp_tmpbuf tmpbuf = { };
2068	wd = eio__wd_open_sync (&tmpbuf, wd, path);	1687	wd = eio__wd_open_sync (&tmpbuf, wd, path);
2069	free (tmpbuf.ptr);	1688	free (tmpbuf.ptr);
2070		1689
2071	return wd;	1690	return wd;
2072	}	1691	}
…		…
2075	eio_wd_close_sync (eio_wd wd)	1694	eio_wd_close_sync (eio_wd wd)
2076	{	1695	{
2077	if (wd != EIO_INVALID_WD && wd != EIO_CWD)	1696	if (wd != EIO_INVALID_WD && wd != EIO_CWD)
2078	{	1697	{
2079	#if HAVE_AT	1698	#if HAVE_AT
2080	close (wd->fd);	1699	eio__close (wd->fd);
2081	#endif	1700	#endif
2082	free (wd);	1701	free (wd);
2083	}	1702	}
2084	}	1703	}
2085		1704
2086	#if HAVE_AT	1705	#if HAVE_AT
2087		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
2088	/* they forgot these */	1720	/* they forgot these */
2089		1721
2090	static int	1722	static int
2091	eio__truncateat (int dirfd, const char *path, off_t length)	1723	eio__truncateat (int dirfd, const char *path, off_t length)
2092	{	1724	{
…		…
2095		1727
2096	if (fd < 0)	1728	if (fd < 0)
2097	return fd;	1729	return fd;
2098		1730
2099	res = ftruncate (fd, length);	1731	res = ftruncate (fd, length);
2100	close (fd);	1732	silent_close (fd);
2101	return res;	1733	return res;
2102	}	1734	}
2103		1735
2104	static int	1736	static int
2105	eio__statvfsat (int dirfd, const char path, struct statvfs buf)	1737	eio__statvfsat (int dirfd, const char path, struct statvfs buf)
…		…
2109		1741
2110	if (fd < 0)	1742	if (fd < 0)
2111	return fd;	1743	return fd;
2112		1744
2113	res = fstatvfs (fd, buf);	1745	res = fstatvfs (fd, buf);
2114	close (fd);	1746	silent_close (fd);
2115	return res;	1747	return res;
2116
2117	}	1748	}
2118		1749
2119	#endif	1750	#endif
2120		1751
2121	/*****************************************************************************/	1752	/*****************************************************************************/
2122		1753
2123	#define ALLOC(len) \	1754	#define ALLOC(len) \
2124	if (!req->ptr2) \	1755	if (!req->ptr2) \
2125	{ \	1756	{ \
2126	X_LOCK (wrklock); \	1757	X_LOCK (EIO_POOL->wrklock); \
2127	req->flags \|= EIO_FLAG_PTR2_FREE; \	1758	req->flags \|= EIO_FLAG_PTR2_FREE; \
2128	X_UNLOCK (wrklock); \	1759	X_UNLOCK (EIO_POOL->wrklock); \
2129	req->ptr2 = malloc (len); \	1760	req->ptr2 = malloc (len); \
2130	if (!req->ptr2) \	1761	if (!req->ptr2) \
2131	{ \	1762	{ \
2132	errno = ENOMEM; \	1763	errno = ENOMEM; \
2133	req->result = -1; \	1764	req->result = -1; \
2134	break; \	1765	goto alloc_fail; \
2135	} \	1766	} \
2136	}	1767	}
2137		1768
2138	static void ecb_noinline ecb_cold	1769	/*****************************************************************************/
2139	etp_proc_init (void)
2140	{
2141	#if HAVE_PRCTL_SET_NAME
2142	/* provide a more sensible "thread name" */
2143	char name[16 + 1];
2144	const int namelen = sizeof (name) - 1;
2145	int len;
2146		1770
2147	prctl (PR_GET_NAME, (unsigned long)name, 0, 0, 0);	1771	static void
2148	name [namelen] = 0;	1772	eio__slurp (int fd, eio_req *req)
2149	len = strlen (name);
2150	strcpy (name + (len <= namelen - 4 ? len : namelen - 4), "/eio");
2151	prctl (PR_SET_NAME, (unsigned long)name, 0, 0, 0);
2152	}
2153	#endif
2154
2155	X_THREAD_PROC (etp_proc)
2156	{	1773	{
2157	ETP_REQ *req;	1774	req->result = fd;
2158	struct timespec ts;
2159	etp_worker self = (etp_worker )thr_arg;
2160		1775
2161	etp_proc_init ();	1776	if (fd < 0)
		1777	return;
2162		1778
2163	/* try to distribute timeouts somewhat evenly */	1779	if (req->offs < 0 \|\| !req->size) /* do we need the size? */
2164	ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL);
2165
2166	for (;;)
2167	{	1780	{
2168	ts.tv_sec = 0;	1781	off_t size = lseek (fd, 0, SEEK_END);
2169		1782
2170	X_LOCK (reqlock);
2171
2172	for (;;)
2173	{
2174	req = reqq_shift (&req_queue);
2175
2176	if (req)
2177	break;
2178
2179	if (ts.tv_sec == 1) /* no request, but timeout detected, let's quit */
2180	{
2181	X_UNLOCK (reqlock);
2182	X_LOCK (wrklock);
2183	--started;
2184	X_UNLOCK (wrklock);
2185	goto quit;
2186	}
2187
2188	++idle;
2189
2190	if (idle <= max_idle)
2191	/* we are allowed to idle, so do so without any timeout */
2192	X_COND_WAIT (reqwait, reqlock);
2193	else
2194	{
2195	/* initialise timeout once */
2196	if (!ts.tv_sec)
2197	ts.tv_sec = time (0) + idle_timeout;
2198
2199	if (X_COND_TIMEDWAIT (reqwait, reqlock, ts) == ETIMEDOUT)
2200	ts.tv_sec = 1; /* assuming this is not a value computed above.,.. */
2201	}
2202
2203	--idle;
2204	}
2205
2206	--nready;
2207
2208	X_UNLOCK (reqlock);
2209
2210	if (req->type < 0)	1783	if (req->offs < 0)
2211	goto quit;	1784	req->offs += size;
2212		1785
2213	ETP_EXECUTE (self, req);	1786	if (!req->size)
2214		1787	req->size = size - req->offs;
2215	X_LOCK (reslock);
2216
2217	++npending;
2218
2219	if (!reqq_push (&res_queue, req) && want_poll_cb)
2220	want_poll_cb ();
2221
2222	etp_worker_clear (self);
2223
2224	X_UNLOCK (reslock);
2225	}	1788	}
2226		1789
2227	quit:	1790	ALLOC (req->size);
2228	free (req);	1791	req->result = pread (fd, req->ptr2, req->size, req->offs);
2229		1792
2230	X_LOCK (wrklock);	1793	silent_close (fd);
2231	etp_worker_free (self);
2232	X_UNLOCK (wrklock);
2233		1794
2234	return 0;	1795	alloc_fail:
		1796	;
2235	}	1797	}
2236
2237	/*****************************************************************************/
2238		1798
2239	int ecb_cold	1799	int ecb_cold
2240	eio_init (void (want_poll)(void), void (done_poll)(void))	1800	eio_init (void (want_poll)(void), void (done_poll)(void))
2241	{	1801	{
2242	#if !HAVE_PREADWRITE	1802	eio_want_poll_cb = want_poll;
2243	X_MUTEX_CREATE (preadwritelock);	1803	eio_done_poll_cb = done_poll;
2244	#endif
2245		1804
2246	return etp_init (want_poll, done_poll);	1805	return etp_init (EIO_POOL, 0, 0, 0);
2247	}	1806	}
2248		1807
2249	ecb_inline void	1808	ecb_inline void
2250	eio_api_destroy (eio_req *req)	1809	eio_api_destroy (eio_req *req)
2251	{	1810	{
2252	free (req);	1811	free (req);
2253	}	1812	}
2254		1813
2255	#define REQ(rtype) \	1814	#define REQ(rtype) \
2256	eio_req *req; \	1815	eio_req *req; \
2257	\	1816	\
2258	req = (eio_req )calloc (1, sizeof req); \	1817	req = (eio_req )calloc (1, sizeof req); \
2259	if (!req) \	1818	if (!req) \
2260	return 0; \	1819	return 0; \
…		…
2274	{ \	1833	{ \
2275	eio_api_destroy (req); \	1834	eio_api_destroy (req); \
2276	return 0; \	1835	return 0; \
2277	}	1836	}
2278		1837
		1838	#define SINGLEDOT(ptr) (0[(char )(ptr)] == '.' && !1[(char )(ptr)])
		1839
2279	static void	1840	static void
2280	eio_execute (etp_worker self, eio_req req)	1841	eio_execute (etp_worker self, eio_req req)
2281	{	1842	{
2282	#if HAVE_AT	1843	#if HAVE_AT
2283	int dirfd;	1844	int dirfd;
…		…
2314	req->result = req->wd == EIO_INVALID_WD ? -1 : 0;	1875	req->result = req->wd == EIO_INVALID_WD ? -1 : 0;
2315	break;	1876	break;
2316	case EIO_WD_CLOSE: req->result = 0;	1877	case EIO_WD_CLOSE: req->result = 0;
2317	eio_wd_close_sync (req->wd); break;	1878	eio_wd_close_sync (req->wd); break;
2318		1879
		1880	case EIO_SEEK: eio__lseek (req); break;
2319	case EIO_READ: ALLOC (req->size);	1881	case EIO_READ: ALLOC (req->size);
2320	req->result = req->offs >= 0	1882	req->result = req->offs >= 0
2321	? pread (req->int1, req->ptr2, req->size, req->offs)	1883	? pread (req->int1, req->ptr2, req->size, req->offs)
2322	: read (req->int1, req->ptr2, req->size); break;	1884	: read (req->int1, req->ptr2, req->size); break;
2323	case EIO_WRITE: req->result = req->offs >= 0	1885	case EIO_WRITE: req->result = req->offs >= 0
2324	? pwrite (req->int1, req->ptr2, req->size, req->offs)	1886	? pwrite (req->int1, req->ptr2, req->size, req->offs)
2325	: write (req->int1, req->ptr2, req->size); break;	1887	: write (req->int1, req->ptr2, req->size); break;
		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;
2326		1891
2327	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;
2328	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;
2329		1894
2330	#if HAVE_AT	1895	#if HAVE_AT
…		…
2335	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;
2336	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;
2337	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;
2338	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;
2339	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;
2340		1906
2341	case EIO_UNLINK: req->result = unlinkat (dirfd, req->ptr1, 0); break;	1907	case EIO_UNLINK: req->result = unlinkat (dirfd, req->ptr1, 0); break;
2342	case EIO_RMDIR: req->result = unlinkat (dirfd, req->ptr1, AT_REMOVEDIR); break;	1908	case EIO_RMDIR: /* complications arise because "." cannot be removed, so we might have to expand */
		1909	req->result = req->wd && SINGLEDOT (req->ptr1)
		1910	? rmdir (req->wd->str)
		1911	: unlinkat (dirfd, req->ptr1, AT_REMOVEDIR); break;
2343	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;
2344	case EIO_RENAME: req->result = renameat (dirfd, req->ptr1, WD2FD ((eio_wd)req->int3), req->ptr2); break;	1913	case EIO_RENAME: req->result = eio__renameat2 (
		1914	dirfd,
		1915	/* complications arise because "." cannot be renamed, so we might have to expand */
		1916	req->wd && SINGLEDOT (req->ptr1) ? req->wd->str : req->ptr1,
		1917	WD2FD ((eio_wd)req->int3),
		1918	req->ptr2,
		1919	req->int2
		1920	);
		1921	break;
2345	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;
2346	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;
2347	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;
2348	case EIO_READLINK: ALLOC (PATH_MAX);
2349	req->result = readlinkat (dirfd, req->ptr1, req->ptr2, PATH_MAX); break;
2350	case EIO_STATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS));	1925	case EIO_STATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS));
2351	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;
2352	case EIO_UTIME:	1935	case EIO_UTIME:
2353	case EIO_FUTIME:	1936	case EIO_FUTIME:
2354	{	1937	{
2355	struct timespec ts[2];	1938	struct timespec ts[2];
2356	struct timespec *times;	1939	struct timespec *times;
…		…
2381	req->result = lstat (path , (EIO_STRUCT_STAT *)req->ptr2); break;	1964	req->result = lstat (path , (EIO_STRUCT_STAT *)req->ptr2); break;
2382	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;
2383	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;
2384	case EIO_TRUNCATE: req->result = truncate (path , req->offs); break;	1967	case EIO_TRUNCATE: req->result = truncate (path , req->offs); break;
2385	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;
2386		1970
2387	case EIO_UNLINK: req->result = unlink (path ); break;	1971	case EIO_UNLINK: req->result = unlink (path ); break;
2388	case EIO_RMDIR: req->result = rmdir (path ); break;	1972	case EIO_RMDIR: req->result = rmdir (path ); break;
2389	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;
2390	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;
2391	case EIO_LINK: req->result = link (path , req->ptr2); break;	1975	case EIO_LINK: req->result = link (path , req->ptr2); break;
2392	case EIO_SYMLINK: req->result = symlink (path , req->ptr2); break;	1976	case EIO_SYMLINK: req->result = symlink (path , req->ptr2); break;
2393	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;
2394	case EIO_READLINK: ALLOC (PATH_MAX);
2395	req->result = readlink (path, req->ptr2, PATH_MAX); break;
2396	case EIO_STATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS));	1978	case EIO_STATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS));
2397	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;
2398		1988
2399	case EIO_UTIME:	1989	case EIO_UTIME:
2400	case EIO_FUTIME:	1990	case EIO_FUTIME:
2401	{	1991	{
2402	struct timeval tv[2];	1992	struct timeval tv[2];
…		…
2437		2027
2438	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;
2439	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;
2440	case EIO_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break;	2030	case EIO_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break;
2441		2031
2442	case EIO_CLOSE: req->result = close (req->int1); break;	2032	case EIO_CLOSE: req->result = eio__close (req->int1); break;
2443	case EIO_DUP2: req->result = dup2 (req->int1, req->int2); break;	2033	case EIO_DUP2: req->result = dup2 (req->int1, req->int2); break;
2444	case EIO_SYNC: req->result = 0; sync (); break;	2034	case EIO_SYNC: req->result = 0; sync (); break;
2445	case EIO_FSYNC: req->result = fsync (req->int1); break;	2035	case EIO_FSYNC: req->result = fsync (req->int1); break;
2446	case EIO_FDATASYNC: req->result = fdatasync (req->int1); break;	2036	case EIO_FDATASYNC: req->result = fdatasync (req->int1); break;
2447	case EIO_SYNCFS: req->result = eio__syncfs (req->int1); break;	2037	case EIO_SYNCFS: req->result = eio__syncfs (req->int1); break;
…		…
2467	req->result = select (0, 0, 0, 0, &tv);	2057	req->result = select (0, 0, 0, 0, &tv);
2468	}	2058	}
2469	#endif	2059	#endif
2470	break;	2060	break;
2471		2061
		2062	#if 0
2472	case EIO_GROUP:	2063	case EIO_GROUP:
2473	abort (); /* handled in eio_request */	2064	abort (); /* handled in eio_request */
		2065	#endif
2474		2066
2475	case EIO_NOP:	2067	case EIO_NOP:
2476	req->result = 0;	2068	req->result = 0;
2477	break;	2069	break;
2478		2070
2479	case EIO_CUSTOM:	2071	case EIO_CUSTOM:
2480	req->feed (req);	2072	req->feed (req);
2481	break;	2073	break;
2482		2074
2483	default:	2075	default:
2484	errno = ENOSYS;
2485	req->result = -1;	2076	req->result = EIO_ENOSYS ();
2486	break;	2077	break;
2487	}	2078	}
2488		2079
		2080	alloc_fail:
2489	req->errorno = errno;	2081	req->errorno = errno;
2490	}	2082	}
2491		2083
2492	#ifndef EIO_NO_WRAPPERS	2084	#ifndef EIO_NO_WRAPPERS
2493		2085
…		…
2569	eio_req eio_readahead (int fd, off_t offset, size_t length, int pri, eio_cb cb, void data)	2161	eio_req eio_readahead (int fd, off_t offset, size_t length, int pri, eio_cb cb, void data)
2570	{	2162	{
2571	REQ (EIO_READAHEAD); req->int1 = fd; req->offs = offset; req->size = length; SEND;	2163	REQ (EIO_READAHEAD); req->int1 = fd; req->offs = offset; req->size = length; SEND;
2572	}	2164	}
2573		2165
		2166	eio_req eio_seek (int fd, off_t offset, int whence, int pri, eio_cb cb, void data)
		2167	{
		2168	REQ (EIO_SEEK); req->int1 = fd; req->offs = offset; req->int2 = whence; SEND;
		2169	}
		2170
2574	eio_req eio_read (int fd, void buf, size_t length, off_t offset, int pri, eio_cb cb, void *data)	2171	eio_req eio_read (int fd, void buf, size_t length, off_t offset, int pri, eio_cb cb, void *data)
2575	{	2172	{
2576	REQ (EIO_READ); req->int1 = fd; req->offs = offset; req->size = length; req->ptr2 = buf; SEND;	2173	REQ (EIO_READ); req->int1 = fd; req->offs = offset; req->size = length; req->ptr2 = buf; SEND;
2577	}	2174	}
2578		2175
2579	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)
2580	{	2177	{
2581	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;
2582	}	2189	}
2583		2190
2584	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)
2585	{	2192	{
2586	REQ (EIO_FSTAT); req->int1 = fd; SEND;	2193	REQ (EIO_FSTAT); req->int1 = fd; SEND;
…		…
2731	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)
2732	{	2339	{
2733	return eio__2path (EIO_RENAME, path, new_path, pri, cb, data);	2340	return eio__2path (EIO_RENAME, path, new_path, pri, cb, data);
2734	}	2341	}
2735		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
2736	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)
2737	{	2349	{
2738	REQ (EIO_CUSTOM); req->feed = execute; SEND;	2350	REQ (EIO_CUSTOM); req->feed = execute; SEND;
2739	}	2351	}
2740		2352
…		…
2774	void	2386	void
2775	eio_grp_add (eio_req grp, eio_req req)	2387	eio_grp_add (eio_req grp, eio_req req)
2776	{	2388	{
2777	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));
2778		2390
2779	grp->flags \|= EIO_FLAG_GROUPADD;	2391	grp->flags \|= ETP_FLAG_GROUPADD;
2780		2392
2781	++grp->size;	2393	++grp->size;
2782	req->grp = grp;	2394	req->grp = grp;
2783		2395
2784	req->grp_prev = 0;	2396	req->grp_prev = 0;

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Comparing libeio/eio.c (file contents): Revision 1.112 by root, Fri Sep 30 20:49:57 2011 UTC vs. Revision 1.150 by root, Fri Jun 15 02:57:36 2018 UTC

Diff Legend

Comparing libeio/eio.c (file contents):
Revision 1.112 by root, Fri Sep 30 20:49:57 2011 UTC vs.
Revision 1.150 by root, Fri Jun 15 02:57:36 2018 UTC