ViewVC Help

View File | Revision Log | Show Annotations | Download File

/cvs/libeio/eio.c

Comparing libeio/eio.c (file contents):
Revision 1.56 by root, Sun Sep 12 03:36:28 2010 UTC vs.
Revision 1.93 by root, Mon Jul 18 01:27:03 2011 UTC

1	/*	1	/*
2	* libeio implementation	2	* libeio implementation
3	*	3	*
4	* Copyright (c) 2007,2008,2009,2010 Marc Alexander Lehmann <libeio@schmorp.de>	4	* Copyright (c) 2007,2008,2009,2010,2011 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	*
…		…
35	* and other provisions required by the GPL. If you do not delete the	35	* and other provisions required by the GPL. If you do not delete the
36	* provisions above, a recipient may use your version of this file under	36	* provisions above, a recipient may use your version of this file under
37	* either the BSD or the GPL.	37	* either the BSD or the GPL.
38	*/	38	*/
39		39
		40	#ifndef _WIN32
		41	# include "config.h"
		42	#endif
		43
40	#include "eio.h"	44	#include "eio.h"
		45	#include "ecb.h"
41		46
42	#ifdef EIO_STACKSIZE	47	#ifdef EIO_STACKSIZE
43	# define XTHREAD_STACKSIZE EIO_STACKSIZE	48	# define XTHREAD_STACKSIZE EIO_STACKSIZE
44	#endif	49	#endif
45	#include "xthread.h"	50	#include "xthread.h"
…		…
49	#include <stdlib.h>	54	#include <stdlib.h>
50	#include <string.h>	55	#include <string.h>
51	#include <errno.h>	56	#include <errno.h>
52	#include <sys/types.h>	57	#include <sys/types.h>
53	#include <sys/stat.h>	58	#include <sys/stat.h>
54	#include <sys/statvfs.h>
55	#include <limits.h>	59	#include <limits.h>
56	#include <fcntl.h>	60	#include <fcntl.h>
57	#include <assert.h>	61	#include <assert.h>
58		62
		63	/* intptr_t comes from unistd.h, says POSIX/UNIX/tradition */
		64	/* intptr_t only comes from stdint.h, says idiot openbsd coder */
		65	#if HAVE_STDINT_H
		66	# include <stdint.h>
		67	#endif
		68
		69	#ifndef ECANCELED
		70	# define ECANCELED EDOM
		71	#endif
		72	#ifndef ELOOP
		73	# define ELOOP EDOM
		74	#endif
		75
		76	static void eio_destroy (eio_req *req);
		77
59	#ifndef EIO_FINISH	78	#ifndef EIO_FINISH
60	# define EIO_FINISH(req) ((req)->finish) && !EIO_CANCELLED (req) ? (req)->finish (req) : 0	79	# define EIO_FINISH(req) ((req)->finish) && !EIO_CANCELLED (req) ? (req)->finish (req) : 0
61	#endif	80	#endif
62		81
63	#ifndef EIO_DESTROY	82	#ifndef EIO_DESTROY
…		…
66		85
67	#ifndef EIO_FEED	86	#ifndef EIO_FEED
68	# define EIO_FEED(req) do { if ((req)->feed ) (req)->feed (req); } while (0)	87	# define EIO_FEED(req) do { if ((req)->feed ) (req)->feed (req); } while (0)
69	#endif	88	#endif
70		89
		90	#ifndef EIO_FD_TO_WIN32_HANDLE
		91	# define EIO_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
		92	#endif
		93	#ifndef EIO_WIN32_HANDLE_TO_FD
		94	# define EIO_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
		95	#endif
		96
		97	#define EIO_ERRNO(errval,retval) ((errno = errval), retval)
		98
		99	#define EIO_ENOSYS() EIO_ERRNO (ENOSYS, -1)
		100
71	#ifdef _WIN32	101	#ifdef _WIN32
72		102
73	/*doh*/	103	#undef PAGESIZE
		104	#define PAGESIZE 4096 /* GetSystemInfo? */
		105
		106	#ifdef EIO_STRUCT_STATI64
		107	#define stat(path,buf) _stati64 (path,buf)
		108	#define fstat(fd,buf) _fstati64 (path,buf)
		109	#endif
		110	#define lstat(path,buf) stat (path,buf)
		111	#define fsync(fd) (FlushFileBuffers ((HANDLE)EIO_FD_TO_WIN32_HANDLE (fd)) ? 0 : EIO_ERRNO (EBADF, -1))
		112	#define mkdir(path,mode) _mkdir (path)
		113	#define link(old,neu) (CreateHardLink (neu, old, 0) ? 0 : EIO_ERRNO (ENOENT, -1))
		114
		115	#define chmod(path,mode) _chmod (path, mode)
		116	#define dup(fd) _dup (fd)
		117	#define dup2(fd1,fd2) _dup2 (fd1, fd2)
		118
		119	#define fchmod(fd,mode) EIO_ENOSYS ()
		120	#define chown(path,uid,gid) EIO_ENOSYS ()
		121	#define fchown(fd,uid,gid) EIO_ENOSYS ()
		122	#define truncate(path,offs) EIO_ENOSYS () /* far-miss: SetEndOfFile */
		123	#define ftruncate(fd,offs) EIO_ENOSYS () /* near-miss: SetEndOfFile */
		124	#define mknod(path,mode,dev) EIO_ENOSYS ()
		125	#define sync() EIO_ENOSYS ()
		126	#define readlink(path,buf,s) EIO_ENOSYS ()
		127	#define statvfs(path,buf) EIO_ENOSYS ()
		128	#define fstatvfs(fd,buf) EIO_ENOSYS ()
		129
		130	/* we could even stat and see if it exists */
		131	static int
		132	symlink (const char *old, const char *neu)
		133	{
		134	#if WINVER >= 0x0600
		135	if (CreateSymbolicLink (neu, old, 1))
		136	return 0;
		137
		138	if (CreateSymbolicLink (neu, old, 0))
		139	return 0;
		140	#endif
		141
		142	return EIO_ERRNO (ENOENT, -1);
		143	}
		144
		145	/* POSIX API only */
		146	#define CreateHardLink(neu,old,flags) 0
		147	#define CreateSymbolicLink(neu,old,flags) 0
		148
		149	struct statvfs
		150	{
		151	int dummy;
		152	};
		153
		154	#define DT_DIR EIO_DT_DIR
		155	#define DT_REG EIO_DT_REG
		156	#define D_NAME(entp) entp.cFileName
		157	#define D_TYPE(entp) (entp.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY ? DT_DIR : DT_REG)
		158
74	#else	159	#else
75		160
76	# include "config.h"
77	# include <sys/time.h>	161	#include <sys/time.h>
78	# include <sys/select.h>	162	#include <sys/select.h>
		163	#include <sys/statvfs.h>
79	# include <unistd.h>	164	#include <unistd.h>
80	# include <utime.h>	165	#include <utime.h>
81	# include <signal.h>	166	#include <signal.h>
82	# include <dirent.h>	167	#include <dirent.h>
83		168
84	#if _POSIX_MEMLOCK || _POSIX_MAPPED_FILES	169	#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
85	# include <sys/mman.h>	170	#include <sys/mman.h>
86	#endif	171	#endif
87		172
		173	#define D_NAME(entp) entp->d_name
		174
88	/* POSIX_SOURCE is useless on bsd's, and XOPEN_SOURCE is unreliable there, too */	175	/* POSIX_SOURCE is useless on bsd's, and XOPEN_SOURCE is unreliable there, too */
89	# if __FreeBSD__ || defined __NetBSD__ || defined __OpenBSD__	176	#if __FreeBSD__ || defined __NetBSD__ || defined __OpenBSD__
90	# define _DIRENT_HAVE_D_TYPE /* sigh */	177	#define _DIRENT_HAVE_D_TYPE /* sigh */
91	# define D_INO(de) (de)->d_fileno	178	#define D_INO(de) (de)->d_fileno
92	# define D_NAMLEN(de) (de)->d_namlen	179	#define D_NAMLEN(de) (de)->d_namlen
93	# elif __linux || defined d_ino || _XOPEN_SOURCE >= 600	180	#elif __linux || defined d_ino || _XOPEN_SOURCE >= 600
94	# define D_INO(de) (de)->d_ino	181	#define D_INO(de) (de)->d_ino
95	# endif	182	#endif
96		183
97	#ifdef _D_EXACT_NAMLEN	184	#ifdef _D_EXACT_NAMLEN
98	# undef D_NAMLEN	185	#undef D_NAMLEN
99	# define D_NAMLEN(de) _D_EXACT_NAMLEN (de)	186	#define D_NAMLEN(de) _D_EXACT_NAMLEN (de)
100	#endif	187	#endif
101		188
102	# ifdef _DIRENT_HAVE_D_TYPE	189	#ifdef _DIRENT_HAVE_D_TYPE
103	# define D_TYPE(de) (de)->d_type	190	#define D_TYPE(de) (de)->d_type
104	# endif	191	#endif
105		192
106	# ifndef EIO_STRUCT_DIRENT	193	#ifndef EIO_STRUCT_DIRENT
107	# define EIO_STRUCT_DIRENT struct dirent	194	#define EIO_STRUCT_DIRENT struct dirent
108	# endif	195	#endif
109		196
110	#endif	197	#endif
111		198
112	#if HAVE_SENDFILE	199	#if HAVE_SENDFILE
113	# if __linux	200	# if __linux
…		…
129	#endif	216	#endif
130	#ifndef D_INO	217	#ifndef D_INO
131	# define D_INO(de) 0	218	# define D_INO(de) 0
132	#endif	219	#endif
133	#ifndef D_NAMLEN	220	#ifndef D_NAMLEN
134	# define D_NAMLEN(de) strlen ((de)->d_name)	221	# define D_NAMLEN(entp) strlen (D_NAME (entp))
135	#endif	222	#endif
136
137	/* number of seconds after which an idle threads exit */
138	#define IDLE_TIMEOUT 10
139		223
140	/* used for struct dirent, AIX doesn't provide it */	224	/* used for struct dirent, AIX doesn't provide it */
141	#ifndef NAME_MAX	225	#ifndef NAME_MAX
142	# define NAME_MAX 4096	226	# define NAME_MAX 4096
143	#endif	227	#endif
…		…
159	if (!eio_buf) \	243	if (!eio_buf) \
160	return -1;	244	return -1;
161		245
162	#define EIO_TICKS ((1000000 + 1023) >> 10)	246	#define EIO_TICKS ((1000000 + 1023) >> 10)
163		247
164	/*****************************************************************************/
165
166	#if __GNUC__ >= 3
167	# define expect(expr,value) __builtin_expect ((expr),(value))
168	#else
169	# define expect(expr,value) (expr)
170	#endif
171
172	#define expect_false(expr) expect ((expr) != 0, 0)
173	#define expect_true(expr) expect ((expr) != 0, 1)
174
175	/*****************************************************************************/
176
177	#define ETP_PRI_MIN EIO_PRI_MIN	248	#define ETP_PRI_MIN EIO_PRI_MIN
178	#define ETP_PRI_MAX EIO_PRI_MAX	249	#define ETP_PRI_MAX EIO_PRI_MAX
179		250
180	struct etp_worker;	251	struct etp_worker;
181		252
…		…
189	#define ETP_WORKER_CLEAR(req) \	260	#define ETP_WORKER_CLEAR(req) \
190	if (wrk->dbuf) \	261	if (wrk->dbuf) \
191	{ \	262	{ \
192	free (wrk->dbuf); \	263	free (wrk->dbuf); \
193	wrk->dbuf = 0; \	264	wrk->dbuf = 0; \
194	} \
195	\
196	if (wrk->dirp) \
197	{ \
198	closedir (wrk->dirp); \
199	wrk->dirp = 0; \
200	}	265	}
201		266
202	#define ETP_WORKER_COMMON \	267	#define ETP_WORKER_COMMON \
203	void *dbuf; \	268	void *dbuf;
204	DIR *dirp;
205		269
206	/*****************************************************************************/	270	/*****************************************************************************/
207		271
208	#define ETP_NUM_PRI (ETP_PRI_MAX - ETP_PRI_MIN + 1)	272	#define ETP_NUM_PRI (ETP_PRI_MAX - ETP_PRI_MIN + 1)
209		273
210	/* calculate time difference in ~1/EIO_TICKS of a second */	274	/* calculate time difference in ~1/EIO_TICKS of a second */
		275	ecb_inline int
211	static int tvdiff (struct timeval *tv1, struct timeval *tv2)	276	tvdiff (struct timeval *tv1, struct timeval *tv2)
212	{	277	{
213	return (tv2->tv_sec - tv1->tv_sec ) * EIO_TICKS	278	return (tv2->tv_sec - tv1->tv_sec ) * EIO_TICKS
214	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);	279	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
215	}	280	}
216		281
…		…
223	static unsigned int max_poll_reqs; /* reslock */	288	static unsigned int max_poll_reqs; /* reslock */
224		289
225	static volatile unsigned int nreqs; /* reqlock */	290	static volatile unsigned int nreqs; /* reqlock */
226	static volatile unsigned int nready; /* reqlock */	291	static volatile unsigned int nready; /* reqlock */
227	static volatile unsigned int npending; /* reqlock */	292	static volatile unsigned int npending; /* reqlock */
228	static volatile unsigned int max_idle = 4;	293	static volatile unsigned int max_idle = 4; /* maximum number of threads that can idle indefinitely */
		294	static volatile unsigned int idle_timeout = 10; /* number of seconds after which an idle threads exit */
229		295
230	static xmutex_t wrklock = X_MUTEX_INIT;	296	static xmutex_t wrklock;
231	static xmutex_t reslock = X_MUTEX_INIT;	297	static xmutex_t reslock;
232	static xmutex_t reqlock = X_MUTEX_INIT;	298	static xmutex_t reqlock;
233	static xcond_t reqwait = X_COND_INIT;	299	static xcond_t reqwait;
234		300
235	#if !HAVE_PREADWRITE	301	#if !HAVE_PREADWRITE
236	/*	302	/*
237	* make our pread/pwrite emulation safe against themselves, but not against	303	* make our pread/pwrite emulation safe against themselves, but not against
238	* normal read/write by using a mutex. slows down execution a lot,	304	* normal read/write by using a mutex. slows down execution a lot,
239	* but that's your problem, not mine.	305	* but that's your problem, not mine.
240	*/	306	*/
241	static xmutex_t preadwritelock = X_MUTEX_INIT;	307	static xmutex_t preadwritelock;
242	#endif	308	#endif
243		309
244	typedef struct etp_worker	310	typedef struct etp_worker
245	{	311	{
246	/* locked by wrklock */	312	/* locked by wrklock */
…		…
252	ETP_REQ *req; /* currently processed request */	318	ETP_REQ *req; /* currently processed request */
253		319
254	ETP_WORKER_COMMON	320	ETP_WORKER_COMMON
255	} etp_worker;	321	} etp_worker;
256		322
257	static etp_worker wrk_first = { &wrk_first, &wrk_first, 0 }; /* NOT etp */	323	static etp_worker wrk_first; /* NOT etp */
258		324
259	#define ETP_WORKER_LOCK(wrk) X_LOCK (wrklock)	325	#define ETP_WORKER_LOCK(wrk) X_LOCK (wrklock)
260	#define ETP_WORKER_UNLOCK(wrk) X_UNLOCK (wrklock)	326	#define ETP_WORKER_UNLOCK(wrk) X_UNLOCK (wrklock)
261		327
262	/* worker threads management */	328	/* worker threads management */
263		329
		330	static void ecb_cold
264	static void etp_worker_clear (etp_worker *wrk)	331	etp_worker_clear (etp_worker *wrk)
265	{	332	{
266	ETP_WORKER_CLEAR (wrk);	333	ETP_WORKER_CLEAR (wrk);
267	}	334	}
268		335
		336	static void ecb_cold
269	static void etp_worker_free (etp_worker *wrk)	337	etp_worker_free (etp_worker *wrk)
270	{	338	{
271	wrk->next->prev = wrk->prev;	339	wrk->next->prev = wrk->prev;
272	wrk->prev->next = wrk->next;	340	wrk->prev->next = wrk->next;
273		341
274	free (wrk);	342	free (wrk);
275	}	343	}
276		344
277	static unsigned int etp_nreqs (void)	345	static unsigned int
		346	etp_nreqs (void)
278	{	347	{
279	int retval;	348	int retval;
280	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);	349	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
281	retval = nreqs;	350	retval = nreqs;
282	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);	351	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
283	return retval;	352	return retval;
284	}	353	}
285		354
286	static unsigned int etp_nready (void)	355	static unsigned int
		356	etp_nready (void)
287	{	357	{
288	unsigned int retval;	358	unsigned int retval;
289		359
290	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);	360	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
291	retval = nready;	361	retval = nready;
292	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);	362	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
293		363
294	return retval;	364	return retval;
295	}	365	}
296		366
297	static unsigned int etp_npending (void)	367	static unsigned int
		368	etp_npending (void)
298	{	369	{
299	unsigned int retval;	370	unsigned int retval;
300		371
301	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);	372	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
302	retval = npending;	373	retval = npending;
303	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);	374	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
304		375
305	return retval;	376	return retval;
306	}	377	}
307		378
308	static unsigned int etp_nthreads (void)	379	static unsigned int
		380	etp_nthreads (void)
309	{	381	{
310	unsigned int retval;	382	unsigned int retval;
311		383
312	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);	384	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
313	retval = started;	385	retval = started;
…		…
327	} etp_reqq;	399	} etp_reqq;
328		400
329	static etp_reqq req_queue;	401	static etp_reqq req_queue;
330	static etp_reqq res_queue;	402	static etp_reqq res_queue;
331		403
		404	static void ecb_noinline ecb_cold
		405	reqq_init (etp_reqq *q)
		406	{
		407	int pri;
		408
		409	for (pri = 0; pri < ETP_NUM_PRI; ++pri)
		410	q->qs[pri] = q->qe[pri] = 0;
		411
		412	q->size = 0;
		413	}
		414
		415	static int ecb_noinline
332	static int reqq_push (etp_reqq *q, ETP_REQ *req)	416	reqq_push (etp_reqq *q, ETP_REQ *req)
333	{	417	{
334	int pri = req->pri;	418	int pri = req->pri;
335	req->next = 0;	419	req->next = 0;
336		420
337	if (q->qe[pri])	421	if (q->qe[pri])
…		…
343	q->qe[pri] = q->qs[pri] = req;	427	q->qe[pri] = q->qs[pri] = req;
344		428
345	return q->size++;	429	return q->size++;
346	}	430	}
347		431
		432	static ETP_REQ * ecb_noinline
348	static ETP_REQ *reqq_shift (etp_reqq *q)	433	reqq_shift (etp_reqq *q)
349	{	434	{
350	int pri;	435	int pri;
351		436
352	if (!q->size)	437	if (!q->size)
353	return 0;	438	return 0;
…		…
368	}	453	}
369		454
370	abort ();	455	abort ();
371	}	456	}
372		457
373	static void etp_atfork_prepare (void)	458	static int ecb_cold
		459	etp_init (void (*want_poll)(void), void (*done_poll)(void))
374	{	460	{
375	X_LOCK (wrklock);	461	X_MUTEX_CREATE (wrklock);
376	X_LOCK (reqlock);	462	X_MUTEX_CREATE (reslock);
377	X_LOCK (reslock);	463	X_MUTEX_CREATE (reqlock);
378	#if !HAVE_PREADWRITE	464	X_COND_CREATE (reqwait);
379	X_LOCK (preadwritelock);
380	#endif
381	}
382		465
383	static void etp_atfork_parent (void)	466	reqq_init (&req_queue);
384	{	467	reqq_init (&res_queue);
385	#if !HAVE_PREADWRITE
386	X_UNLOCK (preadwritelock);
387	#endif
388	X_UNLOCK (reslock);
389	X_UNLOCK (reqlock);
390	X_UNLOCK (wrklock);
391	}
392		468
393	static void etp_atfork_child (void)	469	wrk_first.next =
394	{	470	wrk_first.prev = &wrk_first;
395	ETP_REQ *prv;
396
397	while ((prv = reqq_shift (&req_queue)))
398	ETP_DESTROY (prv);
399
400	while ((prv = reqq_shift (&res_queue)))
401	ETP_DESTROY (prv);
402
403	while (wrk_first.next != &wrk_first)
404	{
405	etp_worker *wrk = wrk_first.next;
406
407	if (wrk->req)
408	ETP_DESTROY (wrk->req);
409
410	etp_worker_clear (wrk);
411	etp_worker_free (wrk);
412	}
413		471
414	started = 0;	472	started = 0;
415	idle = 0;	473	idle = 0;
416	nreqs = 0;	474	nreqs = 0;
417	nready = 0;	475	nready = 0;
418	npending = 0;	476	npending = 0;
419		477
420	etp_atfork_parent ();
421	}
422
423	static void
424	etp_once_init (void)
425	{
426	X_THREAD_ATFORK (etp_atfork_prepare, etp_atfork_parent, etp_atfork_child);
427	}
428
429	static int
430	etp_init (void (*want_poll)(void), void (*done_poll)(void))
431	{
432	static pthread_once_t doinit = PTHREAD_ONCE_INIT;
433
434	pthread_once (&doinit, etp_once_init);
435
436	want_poll_cb = want_poll;	478	want_poll_cb = want_poll;
437	done_poll_cb = done_poll;	479	done_poll_cb = done_poll;
438		480
439	return 0;	481	return 0;
440	}	482	}
441		483
442	X_THREAD_PROC (etp_proc);	484	X_THREAD_PROC (etp_proc);
443		485
		486	static void ecb_cold
444	static void etp_start_thread (void)	487	etp_start_thread (void)
445	{	488	{
446	etp_worker *wrk = calloc (1, sizeof (etp_worker));	489	etp_worker *wrk = calloc (1, sizeof (etp_worker));
447		490
448	/*TODO*/	491	/*TODO*/
449	assert (("unable to allocate worker thread data", wrk));	492	assert (("unable to allocate worker thread data", wrk));
…		…
462	free (wrk);	505	free (wrk);
463		506
464	X_UNLOCK (wrklock);	507	X_UNLOCK (wrklock);
465	}	508	}
466		509
		510	static void
467	static void etp_maybe_start_thread (void)	511	etp_maybe_start_thread (void)
468	{	512	{
469	if (expect_true (etp_nthreads () >= wanted))	513	if (ecb_expect_true (etp_nthreads () >= wanted))
470	return;	514	return;
471		515
472	/* todo: maybe use idle here, but might be less exact */	516	/* todo: maybe use idle here, but might be less exact */
473	if (expect_true (0 <= (int)etp_nthreads () + (int)etp_npending () - (int)etp_nreqs ()))	517	if (ecb_expect_true (0 <= (int)etp_nthreads () + (int)etp_npending () - (int)etp_nreqs ()))
474	return;	518	return;
475		519
476	etp_start_thread ();	520	etp_start_thread ();
477	}	521	}
478		522
		523	static void ecb_cold
479	static void etp_end_thread (void)	524	etp_end_thread (void)
480	{	525	{
481	eio_req *req = calloc (1, sizeof (eio_req));	526	eio_req *req = calloc (1, sizeof (eio_req));
482		527
483	req->type = -1;	528	req->type = -1;
484	req->pri = ETP_PRI_MAX - ETP_PRI_MIN;	529	req->pri = ETP_PRI_MAX - ETP_PRI_MIN;
…		…
491	X_LOCK (wrklock);	536	X_LOCK (wrklock);
492	--started;	537	--started;
493	X_UNLOCK (wrklock);	538	X_UNLOCK (wrklock);
494	}	539	}
495		540
496	static int etp_poll (void)	541	static int
		542	etp_poll (void)
497	{	543	{
498	unsigned int maxreqs;	544	unsigned int maxreqs;
499	unsigned int maxtime;	545	unsigned int maxtime;
500	struct timeval tv_start, tv_now;	546	struct timeval tv_start, tv_now;
501		547
…		…
531		577
532	X_LOCK (reqlock);	578	X_LOCK (reqlock);
533	--nreqs;	579	--nreqs;
534	X_UNLOCK (reqlock);	580	X_UNLOCK (reqlock);
535		581
536	if (expect_false (req->type == EIO_GROUP && req->size))	582	if (ecb_expect_false (req->type == EIO_GROUP && req->size))
537	{	583	{
538	req->int1 = 1; /* mark request as delayed */	584	req->int1 = 1; /* mark request as delayed */
539	continue;	585	continue;
540	}	586	}
541	else	587	else
542	{	588	{
543	int res = ETP_FINISH (req);	589	int res = ETP_FINISH (req);
544	if (expect_false (res))	590	if (ecb_expect_false (res))
545	return res;	591	return res;
546	}	592	}
547		593
548	if (expect_false (maxreqs && !--maxreqs))	594	if (ecb_expect_false (maxreqs && !--maxreqs))
549	break;	595	break;
550		596
551	if (maxtime)	597	if (maxtime)
552	{	598	{
553	gettimeofday (&tv_now, 0);	599	gettimeofday (&tv_now, 0);
…		…
559		605
560	errno = EAGAIN;	606	errno = EAGAIN;
561	return -1;	607	return -1;
562	}	608	}
563		609
		610	static void
564	static void etp_cancel (ETP_REQ *req)	611	etp_cancel (ETP_REQ *req)
565	{	612	{
566	X_LOCK (wrklock);	613	req->cancelled = 1;
567	req->flags |= EIO_FLAG_CANCELLED;
568	X_UNLOCK (wrklock);
569		614
570	eio_grp_cancel (req);	615	eio_grp_cancel (req);
571	}	616	}
572		617
		618	static void
573	static void etp_submit (ETP_REQ *req)	619	etp_submit (ETP_REQ *req)
574	{	620	{
575	req->pri -= ETP_PRI_MIN;	621	req->pri -= ETP_PRI_MIN;
576		622
577	if (expect_false (req->pri < ETP_PRI_MIN - ETP_PRI_MIN)) req->pri = ETP_PRI_MIN - ETP_PRI_MIN;	623	if (ecb_expect_false (req->pri < ETP_PRI_MIN - ETP_PRI_MIN)) req->pri = ETP_PRI_MIN - ETP_PRI_MIN;
578	if (expect_false (req->pri > ETP_PRI_MAX - ETP_PRI_MIN)) req->pri = ETP_PRI_MAX - ETP_PRI_MIN;	624	if (ecb_expect_false (req->pri > ETP_PRI_MAX - ETP_PRI_MIN)) req->pri = ETP_PRI_MAX - ETP_PRI_MIN;
579		625
580	if (expect_false (req->type == EIO_GROUP))	626	if (ecb_expect_false (req->type == EIO_GROUP))
581	{	627	{
582	/* I hope this is worth it :/ */	628	/* I hope this is worth it :/ */
583	X_LOCK (reqlock);	629	X_LOCK (reqlock);
584	++nreqs;	630	++nreqs;
585	X_UNLOCK (reqlock);	631	X_UNLOCK (reqlock);
…		…
604		650
605	etp_maybe_start_thread ();	651	etp_maybe_start_thread ();
606	}	652	}
607	}	653	}
608		654
		655	static void ecb_cold
609	static void etp_set_max_poll_time (double nseconds)	656	etp_set_max_poll_time (double nseconds)
610	{	657	{
611	if (WORDACCESS_UNSAFE) X_LOCK (reslock);	658	if (WORDACCESS_UNSAFE) X_LOCK (reslock);
612	max_poll_time = nseconds * EIO_TICKS;	659	max_poll_time = nseconds * EIO_TICKS;
613	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);	660	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);
614	}	661	}
615		662
		663	static void ecb_cold
616	static void etp_set_max_poll_reqs (unsigned int maxreqs)	664	etp_set_max_poll_reqs (unsigned int maxreqs)
617	{	665	{
618	if (WORDACCESS_UNSAFE) X_LOCK (reslock);	666	if (WORDACCESS_UNSAFE) X_LOCK (reslock);
619	max_poll_reqs = maxreqs;	667	max_poll_reqs = maxreqs;
620	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);	668	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);
621	}	669	}
622		670
		671	static void ecb_cold
623	static void etp_set_max_idle (unsigned int nthreads)	672	etp_set_max_idle (unsigned int nthreads)
624	{	673	{
625	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);	674	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
626	max_idle = nthreads <= 0 ? 1 : nthreads;	675	max_idle = nthreads;
627	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);	676	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
628	}	677	}
629		678
		679	static void ecb_cold
		680	etp_set_idle_timeout (unsigned int seconds)
		681	{
		682	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
		683	idle_timeout = seconds;
		684	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
		685	}
		686
		687	static void ecb_cold
630	static void etp_set_min_parallel (unsigned int nthreads)	688	etp_set_min_parallel (unsigned int nthreads)
631	{	689	{
632	if (wanted < nthreads)	690	if (wanted < nthreads)
633	wanted = nthreads;	691	wanted = nthreads;
634	}	692	}
635		693
		694	static void ecb_cold
636	static void etp_set_max_parallel (unsigned int nthreads)	695	etp_set_max_parallel (unsigned int nthreads)
637	{	696	{
638	if (wanted > nthreads)	697	if (wanted > nthreads)
639	wanted = nthreads;	698	wanted = nthreads;
640		699
641	while (started > wanted)	700	while (started > wanted)
642	etp_end_thread ();	701	etp_end_thread ();
643	}	702	}
644		703
645	/*****************************************************************************/	704	/*****************************************************************************/
646		705
		706	static void
647	static void grp_try_feed (eio_req *grp)	707	grp_try_feed (eio_req *grp)
648	{	708	{
649	while (grp->size < grp->int2 && !EIO_CANCELLED (grp))	709	while (grp->size < grp->int2 && !EIO_CANCELLED (grp))
650	{	710	{
651	grp->flags &= ~EIO_FLAG_GROUPADD;	711	grp->flags &= ~EIO_FLAG_GROUPADD;
652		712
…		…
659	break;	719	break;
660	}	720	}
661	}	721	}
662	}	722	}
663		723
		724	static int
664	static int grp_dec (eio_req *grp)	725	grp_dec (eio_req *grp)
665	{	726	{
666	--grp->size;	727	--grp->size;
667		728
668	/* call feeder, if applicable */	729	/* call feeder, if applicable */
669	grp_try_feed (grp);	730	grp_try_feed (grp);
…		…
673	return eio_finish (grp);	734	return eio_finish (grp);
674	else	735	else
675	return 0;	736	return 0;
676	}	737	}
677		738
		739	static void
678	void eio_destroy (eio_req *req)	740	eio_destroy (eio_req *req)
679	{	741	{
680	if ((req)->flags & EIO_FLAG_PTR1_FREE) free (req->ptr1);	742	if ((req)->flags & EIO_FLAG_PTR1_FREE) free (req->ptr1);
681	if ((req)->flags & EIO_FLAG_PTR2_FREE) free (req->ptr2);	743	if ((req)->flags & EIO_FLAG_PTR2_FREE) free (req->ptr2);
682		744
683	EIO_DESTROY (req);	745	EIO_DESTROY (req);
684	}	746	}
685		747
		748	static int
686	static int eio_finish (eio_req *req)	749	eio_finish (eio_req *req)
687	{	750	{
688	int res = EIO_FINISH (req);	751	int res = EIO_FINISH (req);
689		752
690	if (req->grp)	753	if (req->grp)
691	{	754	{
…		…
699	if (grp->grp_first == req)	762	if (grp->grp_first == req)
700	grp->grp_first = req->grp_next;	763	grp->grp_first = req->grp_next;
701		764
702	res2 = grp_dec (grp);	765	res2 = grp_dec (grp);
703		766
704	if (!res && res2)	767	if (!res)
705	res = res2;	768	res = res2;
706	}	769	}
707		770
708	eio_destroy (req);	771	eio_destroy (req);
709		772
710	return res;	773	return res;
711	}	774	}
712		775
		776	void
713	void eio_grp_cancel (eio_req *grp)	777	eio_grp_cancel (eio_req *grp)
714	{	778	{
715	for (grp = grp->grp_first; grp; grp = grp->grp_next)	779	for (grp = grp->grp_first; grp; grp = grp->grp_next)
716	eio_cancel (grp);	780	eio_cancel (grp);
717	}	781	}
718		782
		783	void
719	void eio_cancel (eio_req *req)	784	eio_cancel (eio_req *req)
720	{	785	{
721	etp_cancel (req);	786	etp_cancel (req);
722	}	787	}
723		788
		789	void
724	void eio_submit (eio_req *req)	790	eio_submit (eio_req *req)
725	{	791	{
726	etp_submit (req);	792	etp_submit (req);
727	}	793	}
728		794
729	unsigned int eio_nreqs (void)	795	unsigned int
		796	eio_nreqs (void)
730	{	797	{
731	return etp_nreqs ();	798	return etp_nreqs ();
732	}	799	}
733		800
734	unsigned int eio_nready (void)	801	unsigned int
		802	eio_nready (void)
735	{	803	{
736	return etp_nready ();	804	return etp_nready ();
737	}	805	}
738		806
739	unsigned int eio_npending (void)	807	unsigned int
		808	eio_npending (void)
740	{	809	{
741	return etp_npending ();	810	return etp_npending ();
742	}	811	}
743		812
744	unsigned int eio_nthreads (void)	813	unsigned int ecb_cold
		814	eio_nthreads (void)
745	{	815	{
746	return etp_nthreads ();	816	return etp_nthreads ();
747	}	817	}
748		818
		819	void ecb_cold
749	void eio_set_max_poll_time (double nseconds)	820	eio_set_max_poll_time (double nseconds)
750	{	821	{
751	etp_set_max_poll_time (nseconds);	822	etp_set_max_poll_time (nseconds);
752	}	823	}
753		824
		825	void ecb_cold
754	void eio_set_max_poll_reqs (unsigned int maxreqs)	826	eio_set_max_poll_reqs (unsigned int maxreqs)
755	{	827	{
756	etp_set_max_poll_reqs (maxreqs);	828	etp_set_max_poll_reqs (maxreqs);
757	}	829	}
758		830
		831	void ecb_cold
759	void eio_set_max_idle (unsigned int nthreads)	832	eio_set_max_idle (unsigned int nthreads)
760	{	833	{
761	etp_set_max_idle (nthreads);	834	etp_set_max_idle (nthreads);
762	}	835	}
763		836
		837	void ecb_cold
		838	eio_set_idle_timeout (unsigned int seconds)
		839	{
		840	etp_set_idle_timeout (seconds);
		841	}
		842
		843	void ecb_cold
764	void eio_set_min_parallel (unsigned int nthreads)	844	eio_set_min_parallel (unsigned int nthreads)
765	{	845	{
766	etp_set_min_parallel (nthreads);	846	etp_set_min_parallel (nthreads);
767	}	847	}
768		848
		849	void ecb_cold
769	void eio_set_max_parallel (unsigned int nthreads)	850	eio_set_max_parallel (unsigned int nthreads)
770	{	851	{
771	etp_set_max_parallel (nthreads);	852	etp_set_max_parallel (nthreads);
772	}	853	}
773		854
774	int eio_poll (void)	855	int eio_poll (void)
…		…
783	# undef pread	864	# undef pread
784	# undef pwrite	865	# undef pwrite
785	# define pread eio__pread	866	# define pread eio__pread
786	# define pwrite eio__pwrite	867	# define pwrite eio__pwrite
787		868
788	static ssize_t	869	static eio_ssize_t
789	eio__pread (int fd, void *buf, size_t count, off_t offset)	870	eio__pread (int fd, void *buf, size_t count, off_t offset)
790	{	871	{
791	ssize_t res;	872	eio_ssize_t res;
792	off_t ooffset;	873	off_t ooffset;
793		874
794	X_LOCK (preadwritelock);	875	X_LOCK (preadwritelock);
795	ooffset = lseek (fd, 0, SEEK_CUR);	876	ooffset = lseek (fd, 0, SEEK_CUR);
796	lseek (fd, offset, SEEK_SET);	877	lseek (fd, offset, SEEK_SET);
…		…
799	X_UNLOCK (preadwritelock);	880	X_UNLOCK (preadwritelock);
800		881
801	return res;	882	return res;
802	}	883	}
803		884
804	static ssize_t	885	static eio_ssize_t
805	eio__pwrite (int fd, void *buf, size_t count, off_t offset)	886	eio__pwrite (int fd, void *buf, size_t count, off_t offset)
806	{	887	{
807	ssize_t res;	888	eio_ssize_t res;
808	off_t ooffset;	889	off_t ooffset;
809		890
810	X_LOCK (preadwritelock);	891	X_LOCK (preadwritelock);
811	ooffset = lseek (fd, 0, SEEK_CUR);	892	ooffset = lseek (fd, 0, SEEK_CUR);
812	lseek (fd, offset, SEEK_SET);	893	lseek (fd, offset, SEEK_SET);
…		…
816		897
817	return res;	898	return res;
818	}	899	}
819	#endif	900	#endif
820		901
821	#ifndef HAVE_FUTIMES	902	#ifndef HAVE_UTIMES
822		903
823	# undef utimes	904	# undef utimes
824	# undef futimes
825	# define utimes(path,times) eio__utimes (path, times)	905	# define utimes(path,times) eio__utimes (path, times)
826	# define futimes(fd,times) eio__futimes (fd, times)
827		906
828	static int	907	static int
829	eio__utimes (const char *filename, const struct timeval times[2])	908	eio__utimes (const char *filename, const struct timeval times[2])
830	{	909	{
831	if (times)	910	if (times)
…		…
839	}	918	}
840	else	919	else
841	return utime (filename, 0);	920	return utime (filename, 0);
842	}	921	}
843		922
		923	#endif
		924
		925	#ifndef HAVE_FUTIMES
		926
		927	# undef futimes
		928	# define futimes(fd,times) eio__futimes (fd, times)
		929
		930	static int
844	static int eio__futimes (int fd, const struct timeval tv[2])	931	eio__futimes (int fd, const struct timeval tv[2])
845	{	932	{
846	errno = ENOSYS;	933	errno = ENOSYS;
847	return -1;	934	return -1;
848	}	935	}
849		936
…		…
853	# undef fdatasync	940	# undef fdatasync
854	# define fdatasync(fd) fsync (fd)	941	# define fdatasync(fd) fsync (fd)
855	#endif	942	#endif
856		943
857	/* sync_file_range always needs emulation */	944	/* sync_file_range always needs emulation */
858	int	945	static int
859	eio__sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags)	946	eio__sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags)
860	{	947	{
861	#if HAVE_SYNC_FILE_RANGE	948	#if HAVE_SYNC_FILE_RANGE
862	int res;	949	int res;
863		950
…		…
880	/* even though we could play tricks with the flags, it's better to always	967	/* even though we could play tricks with the flags, it's better to always
881	* call fdatasync, as that matches the expectation of its users best */	968	* call fdatasync, as that matches the expectation of its users best */
882	return fdatasync (fd);	969	return fdatasync (fd);
883	}	970	}
884		971
		972	static int
		973	eio__fallocate (int fd, int mode, off_t offset, size_t len)
		974	{
		975	#if HAVE_FALLOCATE
		976	return fallocate (fd, mode, offset, len);
		977	#else
		978	errno = ENOSYS;
		979	return -1;
		980	#endif
		981	}
		982
885	#if !HAVE_READAHEAD	983	#if !HAVE_READAHEAD
886	# undef readahead	984	# undef readahead
887	# define readahead(fd,offset,count) eio__readahead (fd, offset, count, self)	985	# define readahead(fd,offset,count) eio__readahead (fd, offset, count, self)
888		986
889	static ssize_t	987	static eio_ssize_t
890	eio__readahead (int fd, off_t offset, size_t count, etp_worker *self)	988	eio__readahead (int fd, off_t offset, size_t count, etp_worker *self)
891	{	989	{
892	size_t todo = count;	990	size_t todo = count;
893	dBUF;	991	dBUF;
894		992
…		…
906	}	1004	}
907		1005
908	#endif	1006	#endif
909		1007
910	/* sendfile always needs emulation */	1008	/* sendfile always needs emulation */
911	static ssize_t	1009	static eio_ssize_t
912	eio__sendfile (int ofd, int ifd, off_t offset, size_t count, etp_worker *self)	1010	eio__sendfile (int ofd, int ifd, off_t offset, size_t count, etp_worker *self)
913	{	1011	{
		1012	eio_ssize_t written = 0;
914	ssize_t res;	1013	eio_ssize_t res;
915		1014
916	if (!count)	1015	if (!count)
917	return 0;	1016	return 0;
918		1017
		1018	for (;;)
		1019	{
		1020	#ifdef __APPLE__
		1021	# undef HAVE_SENDFILE /* broken, as everything on os x */
		1022	#endif
919	#if HAVE_SENDFILE	1023	#if HAVE_SENDFILE
920	# if __linux	1024	# if __linux
		1025	off_t soffset = offset;
921	res = sendfile (ofd, ifd, &offset, count);	1026	res = sendfile (ofd, ifd, &soffset, count);
922		1027
923	# elif __FreeBSD__	1028	# elif __FreeBSD__
924	/*	1029	/*
925	* Of course, the freebsd sendfile is a dire hack with no thoughts	1030	* Of course, the freebsd sendfile is a dire hack with no thoughts
926	* wasted on making it similar to other I/O functions.	1031	* wasted on making it similar to other I/O functions.
927	*/	1032	*/
928	{
929	off_t sbytes;	1033	off_t sbytes;
930	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);	1034	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
931		1035
932	#if 0 /* according to the manpage, this is correct, but broken behaviour */	1036	#if 0 /* according to the manpage, this is correct, but broken behaviour */
933	/* freebsd' sendfile will return 0 on success */	1037	/* freebsd' sendfile will return 0 on success */
934	/* freebsd 8 documents it as only setting *sbytes on EINTR and EAGAIN, but */	1038	/* freebsd 8 documents it as only setting *sbytes on EINTR and EAGAIN, but */
935	/* not on e.g. EIO or EPIPE - sounds broken */	1039	/* not on e.g. EIO or EPIPE - sounds broken */
936	if ((res < 0 && (errno == EAGAIN || errno == EINTR) && sbytes) || res == 0)	1040	if ((res < 0 && (errno == EAGAIN || errno == EINTR) && sbytes) || res == 0)
937	res = sbytes;	1041	res = sbytes;
938	#endif	1042	#endif
939		1043
940	/* according to source inspection, this is correct, and useful behaviour */	1044	/* according to source inspection, this is correct, and useful behaviour */
941	if (sbytes)	1045	if (sbytes)
942	res = sbytes;	1046	res = sbytes;
943	}
944		1047
945	# elif defined (__APPLE__)	1048	# elif defined (__APPLE__)
946
947	{
948	off_t sbytes = count;	1049	off_t sbytes = count;
949	res = sendfile (ifd, ofd, offset, &sbytes, 0, 0);	1050	res = sendfile (ifd, ofd, offset, &sbytes, 0, 0);
950		1051
951	/* according to the manpage, sbytes is always valid */	1052	/* according to the manpage, sbytes is always valid */
952	if (sbytes)	1053	if (sbytes)
953	res = sbytes;	1054	res = sbytes;
954	}
955		1055
956	# elif __hpux	1056	# elif __hpux
957	res = sendfile (ofd, ifd, offset, count, 0, 0);	1057	res = sendfile (ofd, ifd, offset, count, 0, 0);
958		1058
959	# elif __solaris	1059	# elif __solaris
960	{
961	struct sendfilevec vec;	1060	struct sendfilevec vec;
962	size_t sbytes;	1061	size_t sbytes;
963		1062
964	vec.sfv_fd = ifd;	1063	vec.sfv_fd = ifd;
965	vec.sfv_flag = 0;	1064	vec.sfv_flag = 0;
966	vec.sfv_off = offset;	1065	vec.sfv_off = offset;
967	vec.sfv_len = count;	1066	vec.sfv_len = count;
968		1067
969	res = sendfilev (ofd, &vec, 1, &sbytes);	1068	res = sendfilev (ofd, &vec, 1, &sbytes);
970		1069
971	if (res < 0 && sbytes)	1070	if (res < 0 && sbytes)
972	res = sbytes;	1071	res = sbytes;
973	}
974		1072
975	# endif	1073	# endif
976		1074
977	#elif defined (_WIN32)	1075	#elif defined (_WIN32) && 0
978
979	/* does not work, just for documentation of what would need to be done */	1076	/* does not work, just for documentation of what would need to be done */
980	{	1077	/* actually, cannot be done like this, as TransmitFile changes the file offset, */
		1078	/* libeio guarantees that the file offset does not change, and windows */
		1079	/* has no way to get an independent handle to the same file description */
981	HANDLE h = TO_SOCKET (ifd);	1080	HANDLE h = TO_SOCKET (ifd);
982	SetFilePointer (h, offset, 0, FILE_BEGIN);	1081	SetFilePointer (h, offset, 0, FILE_BEGIN);
983	res = TransmitFile (TO_SOCKET (ofd), h, count, 0, 0, 0, 0);	1082	res = TransmitFile (TO_SOCKET (ofd), h, count, 0, 0, 0, 0);
984	}
985		1083
986	#else	1084	#else
987	res = -1;	1085	res = -1;
988	errno = ENOSYS;	1086	errno = ENOSYS;
989	#endif	1087	#endif
990		1088
		1089	/* we assume sendfile can copy at least 128mb in one go */
		1090	if (res <= 128 * 1024 * 1024)
		1091	{
		1092	if (res > 0)
		1093	written += res;
		1094
		1095	if (written)
		1096	return written;
		1097
		1098	break;
		1099	}
		1100	else
		1101	{
		1102	/* if we requested more, then probably the kernel was lazy */
		1103	written += res;
		1104	offset += res;
		1105	count -= res;
		1106
		1107	if (!count)
		1108	return written;
		1109	}
		1110	}
		1111
991	if (res < 0	1112	if (res < 0
992	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK	1113	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
993	/* BSDs */	1114	/* BSDs */
994	#ifdef ENOTSUP /* sigh, if the steenking pile called openbsd would only try to at least compile posix code... */	1115	#ifdef ENOTSUP /* sigh, if the steenking pile called openbsd would only try to at least compile posix code... */
995	|| errno == ENOTSUP	1116	|| errno == ENOTSUP
996	#endif	1117	#endif
		1118	#ifdef EOPNOTSUPP /* windows */
997	|| errno == EOPNOTSUPP /* BSDs */	1119	|| errno == EOPNOTSUPP /* BSDs */
		1120	#endif
998	#if __solaris	1121	#if __solaris
999	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE	1122	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
1000	#endif	1123	#endif
1001	)	1124	)
1002	)	1125	)
…		…
1006		1129
1007	res = 0;	1130	res = 0;
1008		1131
1009	while (count)	1132	while (count)
1010	{	1133	{
1011	ssize_t cnt;	1134	eio_ssize_t cnt;
1012		1135
1013	cnt = pread (ifd, eio_buf, count > EIO_BUFSIZE ? EIO_BUFSIZE : count, offset);	1136	cnt = pread (ifd, eio_buf, count > EIO_BUFSIZE ? EIO_BUFSIZE : count, offset);
1014		1137
1015	if (cnt <= 0)	1138	if (cnt <= 0)
1016	{	1139	{
…		…
1033	}	1156	}
1034		1157
1035	return res;	1158	return res;
1036	}	1159	}
1037		1160
		1161	#ifdef PAGESIZE
		1162	# define eio_pagesize() PAGESIZE
		1163	#else
		1164	static intptr_t
		1165	eio_pagesize (void)
		1166	{
		1167	static intptr_t page;
		1168
		1169	if (!page)
		1170	page = sysconf (_SC_PAGESIZE);
		1171
		1172	return page;
		1173	}
		1174	#endif
		1175
		1176	static void
		1177	eio_page_align (void **addr, size_t *length)
		1178	{
		1179	intptr_t mask = eio_pagesize () - 1;
		1180
		1181	/* round down addr */
		1182	intptr_t adj = mask & (intptr_t)*addr;
		1183
		1184	*addr = (void *)((intptr_t)*addr - adj);
		1185	*length += adj;
		1186
		1187	/* round up length */
		1188	*length = (*length + mask) & ~mask;
		1189	}
		1190
		1191	#if !_POSIX_MEMLOCK
		1192	# define eio__mlockall(a) EIO_ENOSYS ()
		1193	#else
		1194
		1195	static int
		1196	eio__mlockall (int flags)
		1197	{
		1198	#if __GLIBC__ == 2 && __GLIBC_MINOR__ <= 7
		1199	extern int mallopt (int, int);
		1200	mallopt (-6, 238); /* http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=473812 */
		1201	#endif
		1202
		1203	if (EIO_MCL_CURRENT != MCL_CURRENT
		1204	|| EIO_MCL_FUTURE != MCL_FUTURE)
		1205	{
		1206	flags = 0
		1207	| (flags & EIO_MCL_CURRENT ? MCL_CURRENT : 0)
		1208	| (flags & EIO_MCL_FUTURE ? MCL_FUTURE : 0);
		1209	}
		1210
		1211	return mlockall (flags);
		1212	}
		1213	#endif
		1214
		1215	#if !_POSIX_MEMLOCK_RANGE
		1216	# define eio__mlock(a,b) EIO_ENOSYS ()
		1217	#else
		1218
		1219	static int
		1220	eio__mlock (void *addr, size_t length)
		1221	{
		1222	eio_page_align (&addr, &length);
		1223
		1224	return mlock (addr, length);
		1225	}
		1226
		1227	#endif
		1228
		1229	#if !(_POSIX_MAPPED_FILES && _POSIX_SYNCHRONIZED_IO)
		1230	# define eio__msync(a,b,c) EIO_ENOSYS ()
		1231	#else
		1232
		1233	static int
		1234	eio__msync (void *mem, size_t len, int flags)
		1235	{
		1236	eio_page_align (&mem, &len);
		1237
		1238	if (EIO_MS_ASYNC != MS_SYNC
		1239	|| EIO_MS_INVALIDATE != MS_INVALIDATE
		1240	|| EIO_MS_SYNC != MS_SYNC)
		1241	{
		1242	flags = 0
		1243	| (flags & EIO_MS_ASYNC ? MS_ASYNC : 0)
		1244	| (flags & EIO_MS_INVALIDATE ? MS_INVALIDATE : 0)
		1245	| (flags & EIO_MS_SYNC ? MS_SYNC : 0);
		1246	}
		1247
		1248	return msync (mem, len, flags);
		1249	}
		1250
		1251	#endif
		1252
		1253	static int
		1254	eio__mtouch (eio_req *req)
		1255	{
		1256	void *mem = req->ptr2;
		1257	size_t len = req->size;
		1258	int flags = req->int1;
		1259
		1260	eio_page_align (&mem, &len);
		1261
		1262	{
		1263	intptr_t addr = (intptr_t)mem;
		1264	intptr_t end = addr + len;
		1265	intptr_t page = eio_pagesize ();
		1266
		1267	if (addr < end)
		1268	if (flags & EIO_MT_MODIFY) /* modify */
		1269	do { *((volatile sig_atomic_t *)addr) |= 0; } while ((addr += page) < len && !EIO_CANCELLED (req));
		1270	else
		1271	do { *((volatile sig_atomic_t *)addr) ; } while ((addr += page) < len && !EIO_CANCELLED (req));
		1272	}
		1273
		1274	return 0;
		1275	}
		1276
		1277	/*****************************************************************************/
		1278	/* requests implemented outside eio_execute, because they are so large */
		1279
		1280	static void
		1281	eio__realpath (eio_req *req, etp_worker *self)
		1282	{
		1283	char *rel = req->ptr1;
		1284	char *res;
		1285	char *tmp1, *tmp2;
		1286	#if SYMLOOP_MAX > 32
		1287	int symlinks = SYMLOOP_MAX;
		1288	#else
		1289	int symlinks = 32;
		1290	#endif
		1291
		1292	req->result = -1;
		1293
		1294	errno = EINVAL;
		1295	if (!rel)
		1296	return;
		1297
		1298	errno = ENOENT;
		1299	if (!*rel)
		1300	return;
		1301
		1302	if (!req->ptr2)
		1303	{
		1304	X_LOCK (wrklock);
		1305	req->flags |= EIO_FLAG_PTR2_FREE;
		1306	X_UNLOCK (wrklock);
		1307	req->ptr2 = malloc (PATH_MAX * 3);
		1308
		1309	errno = ENOMEM;
		1310	if (!req->ptr2)
		1311	return;
		1312	}
		1313
		1314	res = req->ptr2;
		1315	tmp1 = res + PATH_MAX;
		1316	tmp2 = tmp1 + PATH_MAX;
		1317
		1318	#if 0 /* disabled, the musl way to do things is just too racy */
		1319	#if __linux && defined(O_NONBLOCK) && defined(O_NOATIME)
		1320	/* on linux we may be able to ask the kernel */
		1321	{
		1322	int fd = open (rel, O_RDONLY | O_NONBLOCK | O_NOCTTY | O_NOATIME);
		1323
		1324	if (fd >= 0)
		1325	{
		1326	sprintf (tmp1, "/proc/self/fd/%d", fd);
		1327	req->result = readlink (tmp1, res, PATH_MAX);
		1328	close (fd);
		1329
		1330	/* here we should probably stat the open file and the disk file, to make sure they still match */
		1331
		1332	if (req->result > 0)
		1333	goto done;
		1334	}
		1335	else if (errno == ELOOP || errno == ENAMETOOLONG || errno == ENOENT || errno == ENOTDIR || errno == EIO)
		1336	return;
		1337	}
		1338	#endif
		1339	#endif
		1340
		1341	if (*rel != '/')
		1342	{
		1343	if (!getcwd (res, PATH_MAX))
		1344	return;
		1345
		1346	if (res [1]) /* only use if not / */
		1347	res += strlen (res);
		1348	}
		1349
		1350	while (*rel)
		1351	{
		1352	eio_ssize_t len, linklen;
		1353	char *beg = rel;
		1354
		1355	while (*rel && *rel != '/')
		1356	++rel;
		1357
		1358	len = rel - beg;
		1359
		1360	if (!len) /* skip slashes */
		1361	{
		1362	++rel;
		1363	continue;
		1364	}
		1365
		1366	if (beg [0] == '.')
		1367	{
		1368	if (len == 1)
		1369	continue; /* . - nop */
		1370
		1371	if (beg [1] == '.' && len == 2)
		1372	{
		1373	/* .. - back up one component, if possible */
		1374
		1375	while (res != req->ptr2)
		1376	if (*--res == '/')
		1377	break;
		1378
		1379	continue;
		1380	}
		1381	}
		1382
		1383	errno = ENAMETOOLONG;
		1384	if (res + 1 + len + 1 >= tmp1)
		1385	return;
		1386
		1387	/* copy one component */
		1388	*res = '/';
		1389	memcpy (res + 1, beg, len);
		1390
		1391	/* zero-terminate, for readlink */
		1392	res [len + 1] = 0;
		1393
		1394	/* now check if it's a symlink */
		1395	linklen = readlink (req->ptr2, tmp1, PATH_MAX);
		1396
		1397	if (linklen < 0)
		1398	{
		1399	if (errno != EINVAL)
		1400	return;
		1401
		1402	/* it's a normal directory. hopefully */
		1403	res += len + 1;
		1404	}
		1405	else
		1406	{
		1407	/* yay, it was a symlink - build new path in tmp2 */
		1408	int rellen = strlen (rel);
		1409
		1410	errno = ENAMETOOLONG;
		1411	if (linklen + 1 + rellen >= PATH_MAX)
		1412	return;
		1413
		1414	errno = ELOOP;
		1415	if (!--symlinks)
		1416	return;
		1417
		1418	if (*tmp1 == '/')
		1419	res = req->ptr2; /* symlink resolves to an absolute path */
		1420
		1421	/* we need to be careful, as rel might point into tmp2 already */
		1422	memmove (tmp2 + linklen + 1, rel, rellen + 1);
		1423	tmp2 [linklen] = '/';
		1424	memcpy (tmp2, tmp1, linklen);
		1425
		1426	rel = tmp2;
		1427	}
		1428	}
		1429
		1430	/* special case for the lone root path */
		1431	if (res == req->ptr2)
		1432	*res++ = '/';
		1433
		1434	req->result = res - (char *)req->ptr2;
		1435
		1436	done:
		1437	req->ptr2 = realloc (req->ptr2, req->result); /* trade time for space savings */
		1438	}
		1439
1038	static signed char	1440	static signed char
1039	eio_dent_cmp (const eio_dirent *a, const eio_dirent *b)	1441	eio_dent_cmp (const eio_dirent *a, const eio_dirent *b)
1040	{	1442	{
1041	return a->score - b->score ? a->score - b->score /* works because our signed char is always 0..100 */	1443	return a->score - b->score ? a->score - b->score /* works because our signed char is always 0..100 */
1042	: a->inode < b->inode ? -1 : a->inode > b->inode ? 1 : 0;	1444	: a->inode < b->inode ? -1
		1445	: a->inode > b->inode ? 1
		1446	: 0;
1043	}	1447	}
1044		1448
1045	#define EIO_DENT_CMP(i,op,j) eio_dent_cmp (&i, &j) op 0	1449	#define EIO_DENT_CMP(i,op,j) eio_dent_cmp (&i, &j) op 0
1046		1450
1047	#define EIO_SORT_CUTOFF 30 /* quite high, but performs well on many filesystems */	1451	#define EIO_SORT_CUTOFF 30 /* quite high, but performs well on many filesystems */
1048	#define EIO_SORT_FAST 60 /* when to only use insertion sort */	1452	#define EIO_SORT_FAST 60 /* when to only use insertion sort */
1049		1453
1050	static void	1454	static void
1051	eio_dent_radix_sort (eio_dirent *dents, int size, signed char score_bits, ino_t inode_bits)	1455	eio_dent_radix_sort (eio_dirent *dents, int size, signed char score_bits, eio_ino_t inode_bits)
1052	{	1456	{
1053	unsigned char bits [9 + sizeof (ino_t) * 8];	1457	unsigned char bits [9 + sizeof (eio_ino_t) * 8];
1054	unsigned char *bit = bits;	1458	unsigned char *bit = bits;
1055		1459
1056	assert (CHAR_BIT == 8);	1460	assert (CHAR_BIT == 8);
1057	assert (sizeof (eio_dirent) * 8 < 256);	1461	assert (sizeof (eio_dirent) * 8 < 256);
1058	assert (offsetof (eio_dirent, inode)); /* we use 0 as sentinel */	1462	assert (offsetof (eio_dirent, inode)); /* we use bit #0 as sentinel */
1059	assert (offsetof (eio_dirent, score)); /* we use 0 as sentinel */	1463	assert (offsetof (eio_dirent, score)); /* we use bit #0 as sentinel */
1060		1464
1061	if (size <= EIO_SORT_FAST)	1465	if (size <= EIO_SORT_FAST)
1062	return;	1466	return;
1063		1467
1064	/* first prepare an array of bits to test in our radix sort */	1468	/* first prepare an array of bits to test in our radix sort */
1065	/* try to take endianness into account, as well as differences in ino_t sizes */	1469	/* try to take endianness into account, as well as differences in eio_ino_t sizes */
1066	/* inode_bits must contain all inodes ORed together */	1470	/* inode_bits must contain all inodes ORed together */
1067	/* which is used to skip bits that are 0 everywhere, which is very common */	1471	/* which is used to skip bits that are 0 everywhere, which is very common */
1068	{	1472	{
1069	ino_t endianness;	1473	eio_ino_t endianness;
1070	int i, j;	1474	int i, j;
1071		1475
1072	/* we store the byte offset of byte n into byte n of "endianness" */	1476	/* we store the byte offset of byte n into byte n of "endianness" */
1073	for (i = 0; i < sizeof (ino_t); ++i)	1477	for (i = 0; i < sizeof (eio_ino_t); ++i)
1074	((unsigned char *)&endianness)[i] = i;	1478	((unsigned char *)&endianness)[i] = i;
1075		1479
1076	*bit++ = 0;	1480	*bit++ = 0;
1077		1481
1078	for (i = 0; i < sizeof (ino_t); ++i)	1482	for (i = 0; i < sizeof (eio_ino_t); ++i)
1079	{	1483	{
1080	/* shifting off the byte offsets out of "endianness" */	1484	/* shifting off the byte offsets out of "endianness" */
1081	int offs = (offsetof (eio_dirent, inode) + (endianness & 0xff)) * 8;	1485	int offs = (offsetof (eio_dirent, inode) + (endianness & 0xff)) * 8;
1082	endianness >>= 8;	1486	endianness >>= 8;
1083		1487
1084	for (j = 0; j < 8; ++j)	1488	for (j = 0; j < 8; ++j)
1085	if (inode_bits & (((ino_t)1) << (i * 8 + j)))	1489	if (inode_bits & (((eio_ino_t)1) << (i * 8 + j)))
1086	*bit++ = offs + j;	1490	*bit++ = offs + j;
1087	}	1491	}
1088		1492
1089	for (j = 0; j < 8; ++j)	1493	for (j = 0; j < 8; ++j)
1090	if (score_bits & (1 << j))	1494	if (score_bits & (1 << j))
1091	*bit++ = offsetof (eio_dirent, score) * 8 + j;	1495	*bit++ = offsetof (eio_dirent, score) * 8 + j;
1092	}	1496	}
1093		1497
1094	/* now actually do the sorting (a variant of MSD radix sort) */	1498	/* now actually do the sorting (a variant of MSD radix sort) */
1095	{	1499	{
1096	eio_dirent *base_stk [9 + sizeof (ino_t) * 8], *base;	1500	eio_dirent *base_stk [9 + sizeof (eio_ino_t) * 8], *base;
1097	eio_dirent *end_stk [9 + sizeof (ino_t) * 8], *end;	1501	eio_dirent *end_stk [9 + sizeof (eio_ino_t) * 8], *end;
1098	unsigned char *bit_stk [9 + sizeof (ino_t) * 8];	1502	unsigned char *bit_stk [9 + sizeof (eio_ino_t) * 8];
1099	int stk_idx = 0;	1503	int stk_idx = 0;
1100		1504
1101	base_stk [stk_idx] = dents;	1505	base_stk [stk_idx] = dents;
1102	end_stk [stk_idx] = dents + size;	1506	end_stk [stk_idx] = dents + size;
1103	bit_stk [stk_idx] = bit - 1;	1507	bit_stk [stk_idx] = bit - 1;
…		…
1182	}	1586	}
1183	}	1587	}
1184	}	1588	}
1185		1589
1186	static void	1590	static void
1187	eio_dent_sort (eio_dirent *dents, int size, signed char score_bits, ino_t inode_bits)	1591	eio_dent_sort (eio_dirent *dents, int size, signed char score_bits, eio_ino_t inode_bits)
1188	{	1592	{
1189	if (size <= 1)	1593	if (size <= 1)
1190	return; /* our insertion sort relies on size > 0 */	1594	return; /* our insertion sort relies on size > 0 */
1191		1595
1192	/* first we use a radix sort, but only for dirs >= EIO_SORT_FAST */	1596	/* first we use a radix sort, but only for dirs >= EIO_SORT_FAST */
…		…
1200		1604
1201	/* read a full directory */	1605	/* read a full directory */
1202	static void	1606	static void
1203	eio__scandir (eio_req *req, etp_worker *self)	1607	eio__scandir (eio_req *req, etp_worker *self)
1204	{	1608	{
1205	DIR *dirp;
1206	EIO_STRUCT_DIRENT *entp;
1207	char *name, *names;	1609	char *name, *names;
1208	int namesalloc = 4096;	1610	int namesalloc = 4096 - sizeof (void *) * 4;
1209	int namesoffs = 0;	1611	int namesoffs = 0;
1210	int flags = req->int1;	1612	int flags = req->int1;
1211	eio_dirent *dents = 0;	1613	eio_dirent *dents = 0;
1212	int dentalloc = 128;	1614	int dentalloc = 128;
1213	int dentoffs = 0;	1615	int dentoffs = 0;
1214	ino_t inode_bits = 0;	1616	eio_ino_t inode_bits = 0;
		1617	#ifdef _WIN32
		1618	HANDLE dirp;
		1619	WIN32_FIND_DATA entp;
		1620	#else
		1621	DIR *dirp;
		1622	EIO_STRUCT_DIRENT *entp;
		1623	#endif
1215		1624
1216	req->result = -1;	1625	req->result = -1;
1217		1626
1218	if (!(flags & EIO_READDIR_DENTS))	1627	if (!(flags & EIO_READDIR_DENTS))
1219	flags &= ~(EIO_READDIR_DIRS_FIRST | EIO_READDIR_STAT_ORDER);	1628	flags &= ~(EIO_READDIR_DIRS_FIRST | EIO_READDIR_STAT_ORDER);
1220		1629
1221	X_LOCK (wrklock);	1630	#ifdef _WIN32
1222	/* the corresponding closedir is in ETP_WORKER_CLEAR */	1631	{
		1632	int len = strlen ((const char *)req->ptr1);
		1633	char *path = malloc (MAX_PATH);
		1634	const char *fmt;
		1635
		1636	if (!len)
		1637	fmt = "./*";
		1638	else if (((const char *)req->ptr1)[len - 1] == '/' || ((const char *)req->ptr1)[len - 1] == '\\')
		1639	fmt = "%s*";
		1640	else
		1641	fmt = "%s/*";
		1642
		1643	_snprintf (path, MAX_PATH, fmt, (const char *)req->ptr1);
		1644	dirp = FindFirstFile (path, &entp);
		1645	free (path);
		1646
		1647	if (dirp == INVALID_HANDLE_VALUE)
		1648	{
		1649	dirp = 0;
		1650
		1651	switch (GetLastError ())
		1652	{
		1653	case ERROR_FILE_NOT_FOUND:
		1654	req->result = 0;
		1655	break;
		1656
		1657	case ERROR_INVALID_NAME:
		1658	case ERROR_PATH_NOT_FOUND:
		1659	case ERROR_NO_MORE_FILES:
		1660	errno = ENOENT;
		1661	break;
		1662
		1663	case ERROR_NOT_ENOUGH_MEMORY:
		1664	errno = ENOMEM;
		1665	break;
		1666
		1667	default:
		1668	errno = EINVAL;
		1669	break;
		1670	}
		1671	}
		1672	}
		1673	#else
1223	self->dirp = dirp = opendir (req->ptr1);	1674	dirp = opendir (req->ptr1);
		1675	#endif
		1676
		1677	if (req->flags & EIO_FLAG_PTR1_FREE)
		1678	free (req->ptr1);
		1679
1224	req->flags |= EIO_FLAG_PTR1_FREE | EIO_FLAG_PTR2_FREE;	1680	req->flags |= EIO_FLAG_PTR1_FREE | EIO_FLAG_PTR2_FREE;
1225	req->ptr1 = dents = flags ? malloc (dentalloc * sizeof (eio_dirent)) : 0;	1681	req->ptr1 = dents = flags ? malloc (dentalloc * sizeof (eio_dirent)) : 0;
1226	req->ptr2 = names = malloc (namesalloc);	1682	req->ptr2 = names = malloc (namesalloc);
1227	X_UNLOCK (wrklock);
1228		1683
1229	if (dirp && names && (!flags || dents))	1684	if (dirp && names && (!flags || dents))
1230	for (;;)	1685	for (;;)
1231	{	1686	{
		1687	int done;
		1688
		1689	#ifdef _WIN32
		1690	done = !dirp;
		1691	#else
1232	errno = 0;	1692	errno = 0;
1233	entp = readdir (dirp);	1693	entp = readdir (dirp);
		1694	done = !entp;
		1695	#endif
1234		1696
1235	if (!entp)	1697	if (done)
1236	{	1698	{
		1699	#ifndef _WIN32
		1700	int old_errno = errno;
		1701	closedir (dirp);
		1702	errno = old_errno;
		1703
1237	if (errno)	1704	if (errno)
1238	break;	1705	break;
		1706	#endif
1239		1707
1240	/* sort etc. */	1708	/* sort etc. */
1241	req->int1 = flags;	1709	req->int1 = flags;
1242	req->result = dentoffs;	1710	req->result = dentoffs;
1243		1711
1244	if (flags & EIO_READDIR_STAT_ORDER)	1712	if (flags & EIO_READDIR_STAT_ORDER)
1245	eio_dent_sort (dents, dentoffs, 0, inode_bits); /* sort by inode exclusively */	1713	eio_dent_sort (dents, dentoffs, flags & EIO_READDIR_DIRS_FIRST ? 7 : 0, inode_bits);
1246	else if (flags & EIO_READDIR_DIRS_FIRST)	1714	else if (flags & EIO_READDIR_DIRS_FIRST)
1247	if (flags & EIO_READDIR_FOUND_UNKNOWN)	1715	if (flags & EIO_READDIR_FOUND_UNKNOWN)
1248	eio_dent_sort (dents, dentoffs, 7, inode_bits); /* sort by score and inode */	1716	eio_dent_sort (dents, dentoffs, 7, inode_bits); /* sort by score and inode */
1249	else	1717	else
1250	{	1718	{
…		…
1252	eio_dirent *oth = dents + dentoffs;	1720	eio_dirent *oth = dents + dentoffs;
1253	eio_dirent *dir = dents;	1721	eio_dirent *dir = dents;
1254		1722
1255	/* now partition dirs to the front, and non-dirs to the back */	1723	/* now partition dirs to the front, and non-dirs to the back */
1256	/* by walking from both sides and swapping if necessary */	1724	/* by walking from both sides and swapping if necessary */
1257	/* also clear score, so it doesn't influence sorting */
1258	while (oth > dir)	1725	while (oth > dir)
1259	{	1726	{
1260	if (dir->type == EIO_DT_DIR)	1727	if (dir->type == EIO_DT_DIR)
1261	++dir;	1728	++dir;
1262	else if ((--oth)->type == EIO_DT_DIR)	1729	else if ((--oth)->type == EIO_DT_DIR)
…		…
1265		1732
1266	++dir;	1733	++dir;
1267	}	1734	}
1268	}	1735	}
1269		1736
1270	/* now sort the dirs only */	1737	/* now sort the dirs only (dirs all have the same score) */
1271	eio_dent_sort (dents, dir - dents, 0, inode_bits);	1738	eio_dent_sort (dents, dir - dents, 0, inode_bits);
1272	}	1739	}
1273		1740
1274	break;	1741	break;
1275	}	1742	}
1276		1743
1277	/* now add the entry to our list(s) */	1744	/* now add the entry to our list(s) */
1278	name = entp->d_name;	1745	name = D_NAME (entp);
1279		1746
1280	/* skip . and .. entries */	1747	/* skip . and .. entries */
1281	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))	1748	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1282	{	1749	{
1283	int len = D_NAMLEN (entp) + 1;	1750	int len = D_NAMLEN (entp) + 1;
1284		1751
1285	while (expect_false (namesoffs + len > namesalloc))	1752	while (ecb_expect_false (namesoffs + len > namesalloc))
1286	{	1753	{
1287	namesalloc *= 2;	1754	namesalloc *= 2;
1288	X_LOCK (wrklock);
1289	req->ptr2 = names = realloc (names, namesalloc);	1755	req->ptr2 = names = realloc (names, namesalloc);
1290	X_UNLOCK (wrklock);
1291		1756
1292	if (!names)	1757	if (!names)
1293	break;	1758	break;
1294	}	1759	}
1295		1760
…		…
1297		1762
1298	if (dents)	1763	if (dents)
1299	{	1764	{
1300	struct eio_dirent *ent;	1765	struct eio_dirent *ent;
1301		1766
1302	if (expect_false (dentoffs == dentalloc))	1767	if (ecb_expect_false (dentoffs == dentalloc))
1303	{	1768	{
1304	dentalloc *= 2;	1769	dentalloc *= 2;
1305	X_LOCK (wrklock);
1306	req->ptr1 = dents = realloc (dents, dentalloc * sizeof (eio_dirent));	1770	req->ptr1 = dents = realloc (dents, dentalloc * sizeof (eio_dirent));
1307	X_UNLOCK (wrklock);
1308		1771
1309	if (!dents)	1772	if (!dents)
1310	break;	1773	break;
1311	}	1774	}
1312		1775
…		…
1392	if (EIO_CANCELLED (req))	1855	if (EIO_CANCELLED (req))
1393	{	1856	{
1394	errno = ECANCELED;	1857	errno = ECANCELED;
1395	break;	1858	break;
1396	}	1859	}
		1860
		1861	#ifdef _WIN32
		1862	if (!FindNextFile (dirp, &entp))
		1863	{
		1864	FindClose (dirp);
		1865	dirp = 0;
		1866	}
		1867	#endif
1397	}	1868	}
1398	}
1399
1400	#ifdef PAGESIZE
1401	# define eio_pagesize() PAGESIZE
1402	#else
1403	static intptr_t
1404	eio_pagesize (void)
1405	{
1406	static intptr_t page;
1407
1408	if (!page)
1409	page = sysconf (_SC_PAGESIZE);
1410
1411	return page;
1412	}
1413	#endif
1414
1415	static void
1416	eio_page_align (void **addr, size_t *length)
1417	{
1418	intptr_t mask = eio_pagesize () - 1;
1419
1420	/* round down addr */
1421	intptr_t adj = mask & (intptr_t)*addr;
1422
1423	*addr = (void *)((intptr_t)*addr - adj);
1424	*length += adj;
1425
1426	/* round up length */
1427	*length = (*length + mask) & ~mask;
1428	}
1429
1430	#if !_POSIX_MEMLOCK
1431	# define eio__mlock(a,b) ((errno = ENOSYS), -1)
1432	# define eio__mlockall(a) ((errno = ENOSYS), -1)
1433	#else
1434
1435	static int
1436	eio__mlock (void *addr, size_t length)
1437	{
1438	eio_page_align (&addr, &length);
1439
1440	mlock (addr, length);
1441	}
1442
1443	static int
1444	eio__mlockall (int flags)
1445	{
1446	#if __GLIBC__ == 2 && __GLIBC_MINOR__ <= 7
1447	extern int mallopt (int, int);
1448	mallopt (-6, 238); /* http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=473812 */
1449	#endif
1450
1451	if (EIO_MCL_CURRENT != MCL_CURRENT
1452	|| EIO_MCL_FUTURE != MCL_FUTURE)
1453	{
1454	flags = 0
1455	| (flags & EIO_MCL_CURRENT ? MCL_CURRENT : 0)
1456	| (flags & EIO_MCL_FUTURE ? MCL_FUTURE : 0);
1457	}
1458
1459	mlockall (flags);
1460	}
1461	#endif
1462
1463	#if !(_POSIX_MAPPED_FILES && _POSIX_SYNCHRONIZED_IO)
1464	# define eio__msync(a,b,c) ((errno = ENOSYS), -1)
1465	#else
1466
1467	int
1468	eio__msync (void *mem, size_t len, int flags)
1469	{
1470	eio_page_align (&mem, &len);
1471
1472	if (EIO_MS_ASYNC != MS_SYNC
1473	|| EIO_MS_INVALIDATE != MS_INVALIDATE
1474	|| EIO_MS_SYNC != MS_SYNC)
1475	{
1476	flags = 0
1477	| (flags & EIO_MS_ASYNC ? MS_ASYNC : 0)
1478	| (flags & EIO_MS_INVALIDATE ? MS_INVALIDATE : 0)
1479	| (flags & EIO_MS_SYNC ? MS_SYNC : 0);
1480	}
1481
1482	return msync (mem, len, flags);
1483	}
1484
1485	#endif
1486
1487	int
1488	eio__mtouch (void *mem, size_t len, int flags)
1489	{
1490	eio_page_align (&mem, &len);
1491
1492	{
1493	intptr_t addr = (intptr_t)mem;
1494	intptr_t end = addr + len;
1495	intptr_t page = eio_pagesize ();
1496
1497	if (addr < end)
1498	if (flags & EIO_MT_MODIFY) /* modify */
1499	do { *((volatile sig_atomic_t *)addr) |= 0; } while ((addr += page) < len);
1500	else
1501	do { *((volatile sig_atomic_t *)addr) ; } while ((addr += page) < len);
1502	}
1503
1504	return 0;
1505	}	1869	}
1506		1870
1507	/*****************************************************************************/	1871	/*****************************************************************************/
1508		1872
1509	#define ALLOC(len) \	1873	#define ALLOC(len) \
…		…
1525	{	1889	{
1526	ETP_REQ *req;	1890	ETP_REQ *req;
1527	struct timespec ts;	1891	struct timespec ts;
1528	etp_worker *self = (etp_worker *)thr_arg;	1892	etp_worker *self = (etp_worker *)thr_arg;
1529		1893
1530	/* try to distribute timeouts somewhat randomly */	1894	/* try to distribute timeouts somewhat evenly */
1531	ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL);	1895	ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL);
1532		1896
1533	for (;;)	1897	for (;;)
1534	{	1898	{
		1899	ts.tv_sec = 0;
		1900
1535	X_LOCK (reqlock);	1901	X_LOCK (reqlock);
1536		1902
1537	for (;;)	1903	for (;;)
1538	{	1904	{
1539	self->req = req = reqq_shift (&req_queue);	1905	self->req = req = reqq_shift (&req_queue);
1540		1906
1541	if (req)	1907	if (req)
1542	break;	1908	break;
1543		1909
		1910	if (ts.tv_sec == 1) /* no request, but timeout detected, let's quit */
		1911	{
		1912	X_UNLOCK (reqlock);
		1913	X_LOCK (wrklock);
		1914	--started;
		1915	X_UNLOCK (wrklock);
		1916	goto quit;
		1917	}
		1918
1544	++idle;	1919	++idle;
1545		1920
1546	ts.tv_sec = time (0) + IDLE_TIMEOUT;	1921	if (idle <= max_idle)
1547	if (X_COND_TIMEDWAIT (reqwait, reqlock, ts) == ETIMEDOUT)	1922	/* we are allowed to idle, so do so without any timeout */
		1923	X_COND_WAIT (reqwait, reqlock);
		1924	else
1548	{	1925	{
1549	if (idle > max_idle)	1926	/* initialise timeout once */
1550	{	1927	if (!ts.tv_sec)
1551	--idle;	1928	ts.tv_sec = time (0) + idle_timeout;
1552	X_UNLOCK (reqlock);
1553	X_LOCK (wrklock);
1554	--started;
1555	X_UNLOCK (wrklock);
1556	goto quit;
1557	}
1558		1929
1559	/* we are allowed to idle, so do so without any timeout */
1560	X_COND_WAIT (reqwait, reqlock);	1930	if (X_COND_TIMEDWAIT (reqwait, reqlock, ts) == ETIMEDOUT)
		1931	ts.tv_sec = 1; /* assuming this is not a value computed above.,.. */
1561	}	1932	}
1562		1933
1563	--idle;	1934	--idle;
1564	}	1935	}
1565		1936
…		…
1568	X_UNLOCK (reqlock);	1939	X_UNLOCK (reqlock);
1569		1940
1570	if (req->type < 0)	1941	if (req->type < 0)
1571	goto quit;	1942	goto quit;
1572		1943
1573	if (!EIO_CANCELLED (req))
1574	ETP_EXECUTE (self, req);	1944	ETP_EXECUTE (self, req);
1575		1945
1576	X_LOCK (reslock);	1946	X_LOCK (reslock);
1577		1947
1578	++npending;	1948	++npending;
1579		1949
…		…
1594	return 0;	1964	return 0;
1595	}	1965	}
1596		1966
1597	/*****************************************************************************/	1967	/*****************************************************************************/
1598		1968
		1969	int ecb_cold
1599	int eio_init (void (*want_poll)(void), void (*done_poll)(void))	1970	eio_init (void (*want_poll)(void), void (*done_poll)(void))
1600	{	1971	{
		1972	#if !HAVE_PREADWRITE
		1973	X_MUTEX_CREATE (preadwritelock);
		1974	#endif
		1975
1601	return etp_init (want_poll, done_poll);	1976	return etp_init (want_poll, done_poll);
1602	}	1977	}
1603		1978
		1979	ecb_inline void
1604	static void eio_api_destroy (eio_req *req)	1980	eio_api_destroy (eio_req *req)
1605	{	1981	{
1606	free (req);	1982	free (req);
1607	}	1983	}
1608		1984
1609	#define REQ(rtype) \	1985	#define REQ(rtype) \
…		…
1628	{ \	2004	{ \
1629	eio_api_destroy (req); \	2005	eio_api_destroy (req); \
1630	return 0; \	2006	return 0; \
1631	}	2007	}
1632		2008
		2009	static void
1633	static void eio_execute (etp_worker *self, eio_req *req)	2010	eio_execute (etp_worker *self, eio_req *req)
1634	{	2011	{
1635	errno = 0;	2012	if (ecb_expect_false (EIO_CANCELLED (req)))
		2013	{
		2014	req->result = -1;
		2015	req->errorno = ECANCELED;
		2016	return;
		2017	}
1636		2018
1637	switch (req->type)	2019	switch (req->type)
1638	{	2020	{
1639	case EIO_READ: ALLOC (req->size);	2021	case EIO_READ: ALLOC (req->size);
1640	req->result = req->offs >= 0	2022	req->result = req->offs >= 0
…		…
1673	case EIO_RMDIR: req->result = rmdir (req->ptr1); break;	2055	case EIO_RMDIR: req->result = rmdir (req->ptr1); break;
1674	case EIO_MKDIR: req->result = mkdir (req->ptr1, (mode_t)req->int2); break;	2056	case EIO_MKDIR: req->result = mkdir (req->ptr1, (mode_t)req->int2); break;
1675	case EIO_RENAME: req->result = rename (req->ptr1, req->ptr2); break;	2057	case EIO_RENAME: req->result = rename (req->ptr1, req->ptr2); break;
1676	case EIO_LINK: req->result = link (req->ptr1, req->ptr2); break;	2058	case EIO_LINK: req->result = link (req->ptr1, req->ptr2); break;
1677	case EIO_SYMLINK: req->result = symlink (req->ptr1, req->ptr2); break;	2059	case EIO_SYMLINK: req->result = symlink (req->ptr1, req->ptr2); break;
1678	case EIO_MKNOD: req->result = mknod (req->ptr1, (mode_t)req->int2, (dev_t)req->int3); break;	2060	case EIO_MKNOD: req->result = mknod (req->ptr1, (mode_t)req->int2, (dev_t)req->offs); break;
		2061
		2062	case EIO_REALPATH: eio__realpath (req, self); break;
1679		2063
1680	case EIO_READLINK: ALLOC (PATH_MAX);	2064	case EIO_READLINK: ALLOC (PATH_MAX);
1681	req->result = readlink (req->ptr1, req->ptr2, PATH_MAX); break;	2065	req->result = readlink (req->ptr1, req->ptr2, PATH_MAX); break;
1682		2066
1683	case EIO_SYNC: req->result = 0; sync (); break;	2067	case EIO_SYNC: req->result = 0; sync (); break;
1684	case EIO_FSYNC: req->result = fsync (req->int1); break;	2068	case EIO_FSYNC: req->result = fsync (req->int1); break;
1685	case EIO_FDATASYNC: req->result = fdatasync (req->int1); break;	2069	case EIO_FDATASYNC: req->result = fdatasync (req->int1); break;
1686	case EIO_MSYNC: req->result = eio__msync (req->ptr2, req->size, req->int1); break;	2070	case EIO_MSYNC: req->result = eio__msync (req->ptr2, req->size, req->int1); break;
1687	case EIO_MTOUCH: req->result = eio__mtouch (req->ptr2, req->size, req->int1); break;	2071	case EIO_MTOUCH: req->result = eio__mtouch (req); break;
1688	case EIO_MLOCK: req->result = eio__mlock (req->ptr2, req->size); break;	2072	case EIO_MLOCK: req->result = eio__mlock (req->ptr2, req->size); break;
1689	case EIO_MLOCKALL: req->result = eio__mlockall (req->int1); break;	2073	case EIO_MLOCKALL: req->result = eio__mlockall (req->int1); break;
1690	case EIO_SYNC_FILE_RANGE: req->result = eio__sync_file_range (req->int1, req->offs, req->size, req->int2); break;	2074	case EIO_SYNC_FILE_RANGE: req->result = eio__sync_file_range (req->int1, req->offs, req->size, req->int2); break;
		2075	case EIO_FALLOCATE: req->result = eio__fallocate (req->int1, req->int2, req->offs, req->size); break;
1691		2076
1692	case EIO_READDIR: eio__scandir (req, self); break;	2077	case EIO_READDIR: eio__scandir (req, self); break;
1693		2078
1694	case EIO_BUSY:	2079	case EIO_BUSY:
1695	#ifdef _WIN32	2080	#ifdef _WIN32
1696	Sleep (req->nv1 * 1000.);	2081	Sleep (req->nv1 * 1e3);
1697	#else	2082	#else
1698	{	2083	{
1699	struct timeval tv;	2084	struct timeval tv;
1700		2085
1701	tv.tv_sec = req->nv1;	2086	tv.tv_sec = req->nv1;
1702	tv.tv_usec = (req->nv1 - tv.tv_sec) * 1000000.;	2087	tv.tv_usec = (req->nv1 - tv.tv_sec) * 1e6;
1703		2088
1704	req->result = select (0, 0, 0, 0, &tv);	2089	req->result = select (0, 0, 0, 0, &tv);
1705	}	2090	}
1706	#endif	2091	#endif
1707	break;	2092	break;
…		…
1722	times = tv;	2107	times = tv;
1723	}	2108	}
1724	else	2109	else
1725	times = 0;	2110	times = 0;
1726		2111
1727
1728	req->result = req->type == EIO_FUTIME	2112	req->result = req->type == EIO_FUTIME
1729	? futimes (req->int1, times)	2113	? futimes (req->int1, times)
1730	: utimes (req->ptr1, times);	2114	: utimes (req->ptr1, times);
1731	}	2115	}
1732	break;	2116	break;
…		…
1737	case EIO_NOP:	2121	case EIO_NOP:
1738	req->result = 0;	2122	req->result = 0;
1739	break;	2123	break;
1740		2124
1741	case EIO_CUSTOM:	2125	case EIO_CUSTOM:
1742	((void (*)(eio_req *))req->feed) (req);	2126	req->feed (req);
1743	break;	2127	break;
1744		2128
1745	default:	2129	default:
		2130	errno = ENOSYS;
1746	req->result = -1;	2131	req->result = -1;
1747	break;	2132	break;
1748	}	2133	}
1749		2134
1750	req->errorno = errno;	2135	req->errorno = errno;
…		…
1795	eio_req *eio_sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags, int pri, eio_cb cb, void *data)	2180	eio_req *eio_sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags, int pri, eio_cb cb, void *data)
1796	{	2181	{
1797	REQ (EIO_SYNC_FILE_RANGE); req->int1 = fd; req->offs = offset; req->size = nbytes; req->int2 = flags; SEND;	2182	REQ (EIO_SYNC_FILE_RANGE); req->int1 = fd; req->offs = offset; req->size = nbytes; req->int2 = flags; SEND;
1798	}	2183	}
1799		2184
		2185	eio_req *eio_fallocate (int fd, int mode, off_t offset, size_t len, int pri, eio_cb cb, void *data)
		2186	{
		2187	REQ (EIO_FALLOCATE); req->int1 = fd; req->int2 = mode; req->offs = offset; req->size = len; SEND;
		2188	}
		2189
1800	eio_req *eio_fdatasync (int fd, int pri, eio_cb cb, void *data)	2190	eio_req *eio_fdatasync (int fd, int pri, eio_cb cb, void *data)
1801	{	2191	{
1802	REQ (EIO_FDATASYNC); req->int1 = fd; SEND;	2192	REQ (EIO_FDATASYNC); req->int1 = fd; SEND;
1803	}	2193	}
1804		2194
…		…
1845	eio_req *eio_fchmod (int fd, mode_t mode, int pri, eio_cb cb, void *data)	2235	eio_req *eio_fchmod (int fd, mode_t mode, int pri, eio_cb cb, void *data)
1846	{	2236	{
1847	REQ (EIO_FCHMOD); req->int1 = fd; req->int2 = (long)mode; SEND;	2237	REQ (EIO_FCHMOD); req->int1 = fd; req->int2 = (long)mode; SEND;
1848	}	2238	}
1849		2239
1850	eio_req *eio_fchown (int fd, uid_t uid, gid_t gid, int pri, eio_cb cb, void *data)	2240	eio_req *eio_fchown (int fd, eio_uid_t uid, eio_gid_t gid, int pri, eio_cb cb, void *data)
1851	{	2241	{
1852	REQ (EIO_FCHOWN); req->int1 = fd; req->int2 = (long)uid; req->int3 = (long)gid; SEND;	2242	REQ (EIO_FCHOWN); req->int1 = fd; req->int2 = (long)uid; req->int3 = (long)gid; SEND;
1853	}	2243	}
1854		2244
1855	eio_req *eio_dup2 (int fd, int fd2, int pri, eio_cb cb, void *data)	2245	eio_req *eio_dup2 (int fd, int fd2, int pri, eio_cb cb, void *data)
…		…
1875	eio_req *eio_truncate (const char *path, off_t offset, int pri, eio_cb cb, void *data)	2265	eio_req *eio_truncate (const char *path, off_t offset, int pri, eio_cb cb, void *data)
1876	{	2266	{
1877	REQ (EIO_TRUNCATE); PATH; req->offs = offset; SEND;	2267	REQ (EIO_TRUNCATE); PATH; req->offs = offset; SEND;
1878	}	2268	}
1879		2269
1880	eio_req *eio_chown (const char *path, uid_t uid, gid_t gid, int pri, eio_cb cb, void *data)	2270	eio_req *eio_chown (const char *path, eio_uid_t uid, eio_gid_t gid, int pri, eio_cb cb, void *data)
1881	{	2271	{
1882	REQ (EIO_CHOWN); PATH; req->int2 = (long)uid; req->int3 = (long)gid; SEND;	2272	REQ (EIO_CHOWN); PATH; req->int2 = (long)uid; req->int3 = (long)gid; SEND;
1883	}	2273	}
1884		2274
1885	eio_req *eio_chmod (const char *path, mode_t mode, int pri, eio_cb cb, void *data)	2275	eio_req *eio_chmod (const char *path, mode_t mode, int pri, eio_cb cb, void *data)
…		…
1901	eio_req *eio_readlink (const char *path, int pri, eio_cb cb, void *data)	2291	eio_req *eio_readlink (const char *path, int pri, eio_cb cb, void *data)
1902	{	2292	{
1903	return eio__1path (EIO_READLINK, path, pri, cb, data);	2293	return eio__1path (EIO_READLINK, path, pri, cb, data);
1904	}	2294	}
1905		2295
		2296	eio_req *eio_realpath (const char *path, int pri, eio_cb cb, void *data)
		2297	{
		2298	return eio__1path (EIO_REALPATH, path, pri, cb, data);
		2299	}
		2300
1906	eio_req *eio_stat (const char *path, int pri, eio_cb cb, void *data)	2301	eio_req *eio_stat (const char *path, int pri, eio_cb cb, void *data)
1907	{	2302	{
1908	return eio__1path (EIO_STAT, path, pri, cb, data);	2303	return eio__1path (EIO_STAT, path, pri, cb, data);
1909	}	2304	}
1910		2305
…		…
1933	REQ (EIO_READDIR); PATH; req->int1 = flags; SEND;	2328	REQ (EIO_READDIR); PATH; req->int1 = flags; SEND;
1934	}	2329	}
1935		2330
1936	eio_req *eio_mknod (const char *path, mode_t mode, dev_t dev, int pri, eio_cb cb, void *data)	2331	eio_req *eio_mknod (const char *path, mode_t mode, dev_t dev, int pri, eio_cb cb, void *data)
1937	{	2332	{
1938	REQ (EIO_MKNOD); PATH; req->int2 = (long)mode; req->int3 = (long)dev; SEND;	2333	REQ (EIO_MKNOD); PATH; req->int2 = (long)mode; req->offs = (off_t)dev; SEND;
1939	}	2334	}
1940		2335
1941	static eio_req *	2336	static eio_req *
1942	eio__2path (int type, const char *path, const char *new_path, int pri, eio_cb cb, void *data)	2337	eio__2path (int type, const char *path, const char *new_path, int pri, eio_cb cb, void *data)
1943	{	2338	{
…		…
1967	eio_req *eio_rename (const char *path, const char *new_path, int pri, eio_cb cb, void *data)	2362	eio_req *eio_rename (const char *path, const char *new_path, int pri, eio_cb cb, void *data)
1968	{	2363	{
1969	return eio__2path (EIO_RENAME, path, new_path, pri, cb, data);	2364	return eio__2path (EIO_RENAME, path, new_path, pri, cb, data);
1970	}	2365	}
1971		2366
1972	eio_req *eio_custom (eio_cb execute, int pri, eio_cb cb, void *data)	2367	eio_req *eio_custom (void (*execute)(eio_req *), int pri, eio_cb cb, void *data)
1973	{	2368	{
1974	REQ (EIO_CUSTOM); req->feed = (void (*)(eio_req *))execute; SEND;	2369	REQ (EIO_CUSTOM); req->feed = execute; SEND;
1975	}	2370	}
1976		2371
1977	#endif	2372	#endif
1978		2373
1979	eio_req *eio_grp (eio_cb cb, void *data)	2374	eio_req *eio_grp (eio_cb cb, void *data)
…		…
1988	#undef SEND	2383	#undef SEND
1989		2384
1990	/*****************************************************************************/	2385	/*****************************************************************************/
1991	/* grp functions */	2386	/* grp functions */
1992		2387
		2388	void
1993	void eio_grp_feed (eio_req *grp, void (*feed)(eio_req *req), int limit)	2389	eio_grp_feed (eio_req *grp, void (*feed)(eio_req *req), int limit)
1994	{	2390	{
1995	grp->int2 = limit;	2391	grp->int2 = limit;
1996	grp->feed = feed;	2392	grp->feed = feed;
1997		2393
1998	grp_try_feed (grp);	2394	grp_try_feed (grp);
1999	}	2395	}
2000		2396
		2397	void
2001	void eio_grp_limit (eio_req *grp, int limit)	2398	eio_grp_limit (eio_req *grp, int limit)
2002	{	2399	{
2003	grp->int2 = limit;	2400	grp->int2 = limit;
2004		2401
2005	grp_try_feed (grp);	2402	grp_try_feed (grp);
2006	}	2403	}
2007		2404
		2405	void
2008	void eio_grp_add (eio_req *grp, eio_req *req)	2406	eio_grp_add (eio_req *grp, eio_req *req)
2009	{	2407	{
2010	assert (("cannot add requests to IO::AIO::GRP after the group finished", grp->int1 != 2));	2408	assert (("cannot add requests to IO::AIO::GRP after the group finished", grp->int1 != 2));
2011		2409
2012	grp->flags |= EIO_FLAG_GROUPADD;	2410	grp->flags |= EIO_FLAG_GROUPADD;
2013		2411
…		…
2024	}	2422	}
2025		2423
2026	/*****************************************************************************/	2424	/*****************************************************************************/
2027	/* misc garbage */	2425	/* misc garbage */
2028		2426
		2427	eio_ssize_t
2029	ssize_t eio_sendfile_sync (int ofd, int ifd, off_t offset, size_t count)	2428	eio_sendfile_sync (int ofd, int ifd, off_t offset, size_t count)
2030	{	2429	{
2031	etp_worker wrk;	2430	etp_worker wrk;
2032	ssize_t ret;	2431	eio_ssize_t ret;
2033		2432
2034	wrk.dbuf = 0;	2433	wrk.dbuf = 0;
2035		2434
2036	ret = eio__sendfile (ofd, ifd, offset, count, &wrk);	2435	ret = eio__sendfile (ofd, ifd, offset, count, &wrk);
2037		2436

Diff Legend

–	Removed lines
+	Added lines
<	Changed lines
>	Changed lines