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Comparing cvsroot/libeio/eio.c (file contents):
Revision 1.13 by root, Tue May 13 19:34:11 2008 UTC vs.
Revision 1.32 by root, Sat Jun 6 18:06:55 2009 UTC

		1	/*
		2	* libeio implementation
		3	*
		4	* Copyright (c) 2007,2008,2009 Marc Alexander Lehmann <libeio@schmorp.de>
		5	* All rights reserved.
		6	*
		7	* Redistribution and use in source and binary forms, with or without modifica-
		8	* tion, are permitted provided that the following conditions are met:
		9	*
		10	* 1. Redistributions of source code must retain the above copyright notice,
		11	* this list of conditions and the following disclaimer.
		12	*
		13	* 2. Redistributions in binary form must reproduce the above copyright
		14	* notice, this list of conditions and the following disclaimer in the
		15	* documentation and/or other materials provided with the distribution.
		16	*
		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-
		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-
		21	* CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
		22	* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
		23	* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
		24	* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
		25	* ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
		26	* OF THE POSSIBILITY OF SUCH DAMAGE.
		27	*
		28	* Alternatively, the contents of this file may be used under the terms of
		29	* the GNU General Public License ("GPL") version 2 or any later version,
		30	* in which case the provisions of the GPL are applicable instead of
		31	* the above. If you wish to allow the use of your version of this file
		32	* only under the terms of the GPL and not to allow others to use your
		33	* version of this file under the BSD license, indicate your decision
		34	* by deleting the provisions above and replace them with the notice
		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
		37	* either the BSD or the GPL.
		38	*/
		39
1	#include "eio.h"	40	#include "eio.h"
		41
		42	#ifdef EIO_STACKSIZE
		43	# define XTHREAD_STACKSIZE EIO_STACKSIZE
		44	#endif
2	#include "xthread.h"	45	#include "xthread.h"
3		46
4	#include <errno.h>	47	#include <errno.h>
5	#include <stddef.h>	48	#include <stddef.h>
6	#include <stdlib.h>	49	#include <stdlib.h>
…		…
25	#endif	68	#endif
26		69
27	#ifdef _WIN32	70	#ifdef _WIN32
28		71
29	/*doh*/	72	/*doh*/
30
31	#else	73	#else
32		74
33	# include "config.h"	75	# include "config.h"
34	# include <sys/time.h>	76	# include <sys/time.h>
35	# include <sys/select.h>	77	# include <sys/select.h>
36	# include <unistd.h>	78	# include <unistd.h>
37	# include <utime.h>	79	# include <utime.h>
38	# include <signal.h>	80	# include <signal.h>
39	# include <dirent.h>	81	# include <dirent.h>
		82
		83	/* POSIX_SOURCE is useless on bsd's, and XOPEN_SOURCE is unreliable there, too */
		84	# if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__)
		85	# define D_INO(de) (de)->d_fileno
		86	# define _DIRENT_HAVE_D_TYPE /* sigh */
		87	# elif defined(__linux) || defined(d_ino) || _XOPEN_SOURCE >= 600
		88	# define D_INO(de) (de)->d_ino
		89	# endif
		90
		91	# ifdef _DIRENT_HAVE_D_TYPE
		92	# define D_TYPE(de) (de)->d_type
		93	# endif
40		94
41	# ifndef EIO_STRUCT_DIRENT	95	# ifndef EIO_STRUCT_DIRENT
42	# define EIO_STRUCT_DIRENT struct dirent	96	# define EIO_STRUCT_DIRENT struct dirent
43	# endif	97	# endif
44		98
…		…
57	# else	111	# else
58	# error sendfile support requested but not available	112	# error sendfile support requested but not available
59	# endif	113	# endif
60	#endif	114	#endif
61		115
		116	#ifndef D_TYPE
		117	# define D_TYPE(de) 0
		118	#endif
		119
		120	#ifndef D_INO
		121	# define D_INO(de) 0
		122	#endif
		123
62	/* number of seconds after which an idle threads exit */	124	/* number of seconds after which an idle threads exit */
63	#define IDLE_TIMEOUT 10	125	#define IDLE_TIMEOUT 10
64		126
65	/* used for struct dirent, AIX doesn't provide it */	127	/* used for struct dirent, AIX doesn't provide it */
66	#ifndef NAME_MAX	128	#ifndef NAME_MAX
…		…
70	/* buffer size for various temporary buffers */	132	/* buffer size for various temporary buffers */
71	#define EIO_BUFSIZE 65536	133	#define EIO_BUFSIZE 65536
72		134
73	#define dBUF \	135	#define dBUF \
74	char *eio_buf; \	136	char *eio_buf; \
75	X_LOCK (etplock); \	137	ETP_WORKER_LOCK (self); \
76	self->dbuf = eio_buf = malloc (EIO_BUFSIZE); \	138	self->dbuf = eio_buf = malloc (EIO_BUFSIZE); \
77	X_UNLOCK (etplock); \	139	ETP_WORKER_UNLOCK (self); \
78	errno = ENOMEM; \	140	errno = ENOMEM; \
79	if (!eio_buf) \	141	if (!eio_buf) \
80	return -1;	142	return -1;
81		143
82	#define EIO_TICKS ((1000000 + 1023) >> 10)	144	#define EIO_TICKS ((1000000 + 1023) >> 10)
83		145
84	/*****************************************************************************/	146	/*****************************************************************************/
85		147
		148	#if __GNUC__ >= 3
		149	# define expect(expr,value) __builtin_expect ((expr),(value))
		150	#else
		151	# define expect(expr,value) (expr)
		152	#endif
		153
		154	#define expect_false(expr) expect ((expr) != 0, 0)
		155	#define expect_true(expr) expect ((expr) != 0, 1)
		156
		157	/*****************************************************************************/
		158
		159	#define ETP_PRI_MIN EIO_PRI_MIN
		160	#define ETP_PRI_MAX EIO_PRI_MAX
		161
		162	struct etp_worker;
		163
		164	#define ETP_REQ eio_req
		165	#define ETP_DESTROY(req) eio_destroy (req)
		166	static int eio_finish (eio_req *req);
		167	#define ETP_FINISH(req) eio_finish (req)
		168	static void eio_execute (struct etp_worker *self, eio_req *req);
		169	#define ETP_EXECUTE(wrk,req) eio_execute (wrk,req)
		170
		171	#define ETP_WORKER_CLEAR(req) \
		172	if (wrk->dbuf) \
		173	{ \
		174	free (wrk->dbuf); \
		175	wrk->dbuf = 0; \
		176	} \
		177	\
		178	if (wrk->dirp) \
		179	{ \
		180	closedir (wrk->dirp); \
		181	wrk->dirp = 0; \
		182	}
		183
		184	#define ETP_WORKER_COMMON \
		185	void *dbuf; \
		186	DIR *dirp;
		187
		188	/*****************************************************************************/
		189
		190	#define ETP_NUM_PRI (ETP_PRI_MAX - ETP_PRI_MIN + 1)
		191
86	/* calculcate time difference in ~1/EIO_TICKS of a second */	192	/* calculcate time difference in ~1/EIO_TICKS of a second */
87	static int tvdiff (struct timeval *tv1, struct timeval *tv2)	193	static int tvdiff (struct timeval *tv1, struct timeval *tv2)
88	{	194	{
89	return (tv2->tv_sec - tv1->tv_sec ) * EIO_TICKS	195	return (tv2->tv_sec - tv1->tv_sec ) * EIO_TICKS
90	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);	196	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
91	}	197	}
92		198
93	static unsigned int started, idle, wanted = 4;	199	static unsigned int started, idle, wanted = 4;
94		200
95	typedef struct etp_pool
96	{
97	void (*want_poll_cb) (void);	201	static void (*want_poll_cb) (void);
98	void (*done_poll_cb) (void);	202	static void (*done_poll_cb) (void);
99		203
100	unsigned int max_poll_time;	204	static unsigned int max_poll_time; /* reslock */
101	unsigned int max_poll_reqs;	205	static unsigned int max_poll_reqs; /* reslock */
102	} etp_pool;
103		206
104	static volatile unsigned int nreqs, nready, npending;	207	static volatile unsigned int nreqs; /* reqlock */
		208	static volatile unsigned int nready; /* reqlock */
		209	static volatile unsigned int npending; /* reqlock */
105	static volatile unsigned int max_idle = 4;	210	static volatile unsigned int max_idle = 4;
106		211
107	static mutex_t etplock = X_MUTEX_INIT;	212	static mutex_t wrklock = X_MUTEX_INIT;
108	static mutex_t reslock = X_MUTEX_INIT;	213	static mutex_t reslock = X_MUTEX_INIT;
109	static mutex_t reqlock = X_MUTEX_INIT;	214	static mutex_t reqlock = X_MUTEX_INIT;
110	static cond_t reqwait = X_COND_INIT;	215	static cond_t reqwait = X_COND_INIT;
111		216
		217	#if !HAVE_PREADWRITE
		218	/*
		219	* make our pread/pwrite emulation safe against themselves, but not against
		220	* normal read/write by using a mutex. slows down execution a lot,
		221	* but that's your problem, not mine.
		222	*/
		223	static mutex_t preadwritelock = X_MUTEX_INIT;
		224	#endif
		225
112	typedef struct worker	226	typedef struct etp_worker
113	{	227	{
114	/* locked by etplock */	228	/* locked by wrklock */
115	struct worker *prev, *next;	229	struct etp_worker *prev, *next;
116		230
117	thread_t tid;	231	thread_t tid;
118		232
119	/* locked by reslock, reqlock or etplock */	233	/* locked by reslock, reqlock or wrklock */
120	eio_req *req; /* currently processed request */	234	ETP_REQ *req; /* currently processed request */
121	void *dbuf;	235
122	DIR *dirp;	236	ETP_WORKER_COMMON
123	} worker;	237	} etp_worker;
124		238
125	static worker wrk_first = { &wrk_first, &wrk_first, 0 }; /* NOT etp */	239	static etp_worker wrk_first = { &wrk_first, &wrk_first, 0 }; /* NOT etp */
		240
		241	#define ETP_WORKER_LOCK(wrk) X_LOCK (wrklock)
		242	#define ETP_WORKER_UNLOCK(wrk) X_UNLOCK (wrklock)
126		243
127	/* worker threads management */	244	/* worker threads management */
128		245
129	static void worker_clear (worker *wrk)	246	static void etp_worker_clear (etp_worker *wrk)
130	{	247	{
131	if (wrk->dirp)	248	ETP_WORKER_CLEAR (wrk);
132	{
133	closedir (wrk->dirp);
134	wrk->dirp = 0;
135	}
136
137	if (wrk->dbuf)
138	{
139	free (wrk->dbuf);
140	wrk->dbuf = 0;
141	}
142	}	249	}
143		250
144	static void worker_free (worker *wrk)	251	static void etp_worker_free (etp_worker *wrk)
145	{	252	{
146	wrk->next->prev = wrk->prev;	253	wrk->next->prev = wrk->prev;
147	wrk->prev->next = wrk->next;	254	wrk->prev->next = wrk->next;
148		255
149	free (wrk);	256	free (wrk);
150	}	257	}
151		258
152	unsigned int eio_nreqs (void)	259	static unsigned int etp_nreqs (void)
153	{	260	{
		261	int retval;
		262	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
		263	retval = nreqs;
		264	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
154	return nreqs;	265	return retval;
155	}	266	}
156		267
157	unsigned int eio_nready (void)	268	static unsigned int etp_nready (void)
158	{	269	{
159	unsigned int retval;	270	unsigned int retval;
160		271
161	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);	272	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
162	retval = nready;	273	retval = nready;
163	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);	274	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
164		275
165	return retval;	276	return retval;
166	}	277	}
167		278
168	unsigned int eio_npending (void)	279	static unsigned int etp_npending (void)
169	{	280	{
170	unsigned int retval;	281	unsigned int retval;
171		282
172	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);	283	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
173	retval = npending;	284	retval = npending;
174	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);	285	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
175		286
176	return retval;	287	return retval;
177	}	288	}
178		289
179	unsigned int eio_nthreads (void)	290	static unsigned int etp_nthreads (void)
180	{	291	{
181	unsigned int retval;	292	unsigned int retval;
182		293
183	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);	294	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
184	retval = started;	295	retval = started;
…		…
191	* a somewhat faster data structure might be nice, but	302	* a somewhat faster data structure might be nice, but
192	* with 8 priorities this actually needs <20 insns	303	* with 8 priorities this actually needs <20 insns
193	* per shift, the most expensive operation.	304	* per shift, the most expensive operation.
194	*/	305	*/
195	typedef struct {	306	typedef struct {
196	eio_req *qs[EIO_NUM_PRI], *qe[EIO_NUM_PRI]; /* qstart, qend */	307	ETP_REQ *qs[ETP_NUM_PRI], *qe[ETP_NUM_PRI]; /* qstart, qend */
197	int size;	308	int size;
198	} reqq;	309	} etp_reqq;
199		310
200	static reqq req_queue;	311	static etp_reqq req_queue;
201	static reqq res_queue;	312	static etp_reqq res_queue;
202		313
203	static int reqq_push (reqq *q, eio_req *req)	314	static int reqq_push (etp_reqq *q, ETP_REQ *req)
204	{	315	{
205	int pri = req->pri;	316	int pri = req->pri;
206	req->next = 0;	317	req->next = 0;
207		318
208	if (q->qe[pri])	319	if (q->qe[pri])
…		…
214	q->qe[pri] = q->qs[pri] = req;	325	q->qe[pri] = q->qs[pri] = req;
215		326
216	return q->size++;	327	return q->size++;
217	}	328	}
218		329
219	static eio_req *reqq_shift (reqq *q)	330	static ETP_REQ *reqq_shift (etp_reqq *q)
220	{	331	{
221	int pri;	332	int pri;
222		333
223	if (!q->size)	334	if (!q->size)
224	return 0;	335	return 0;
225		336
226	--q->size;	337	--q->size;
227		338
228	for (pri = EIO_NUM_PRI; pri--; )	339	for (pri = ETP_NUM_PRI; pri--; )
229	{	340	{
230	eio_req *req = q->qs[pri];	341	eio_req *req = q->qs[pri];
231		342
232	if (req)	343	if (req)
233	{	344	{
…		…
241	abort ();	352	abort ();
242	}	353	}
243		354
244	static void etp_atfork_prepare (void)	355	static void etp_atfork_prepare (void)
245	{	356	{
246	X_LOCK (etplock);	357	X_LOCK (wrklock);
247	X_LOCK (reqlock);	358	X_LOCK (reqlock);
248	X_LOCK (reslock);	359	X_LOCK (reslock);
249	#if !HAVE_PREADWRITE	360	#if !HAVE_PREADWRITE
250	X_LOCK (preadwritelock);	361	X_LOCK (preadwritelock);
251	#endif	362	#endif
252	#if !HAVE_READDIR_R
253	X_LOCK (readdirlock);
254	#endif
255	}	363	}
256		364
257	static void etp_atfork_parent (void)	365	static void etp_atfork_parent (void)
258	{	366	{
259	#if !HAVE_READDIR_R
260	X_UNLOCK (readdirlock);
261	#endif
262	#if !HAVE_PREADWRITE	367	#if !HAVE_PREADWRITE
263	X_UNLOCK (preadwritelock);	368	X_UNLOCK (preadwritelock);
264	#endif	369	#endif
265	X_UNLOCK (reslock);	370	X_UNLOCK (reslock);
266	X_UNLOCK (reqlock);	371	X_UNLOCK (reqlock);
267	X_UNLOCK (etplock);	372	X_UNLOCK (wrklock);
268	}	373	}
269		374
270	static void etp_atfork_child (void)	375	static void etp_atfork_child (void)
271	{	376	{
272	eio_req *prv;	377	ETP_REQ *prv;
273		378
274	while (prv = reqq_shift (&req_queue))	379	while ((prv = reqq_shift (&req_queue)))
275	eio_destroy (prv);	380	ETP_DESTROY (prv);
276		381
277	while (prv = reqq_shift (&res_queue))	382	while ((prv = reqq_shift (&res_queue)))
278	eio_destroy (prv);	383	ETP_DESTROY (prv);
279		384
280	while (wrk_first.next != &wrk_first)	385	while (wrk_first.next != &wrk_first)
281	{	386	{
282	worker *wrk = wrk_first.next;	387	etp_worker *wrk = wrk_first.next;
283		388
284	if (wrk->req)	389	if (wrk->req)
285	eio_destroy (wrk->req);	390	ETP_DESTROY (wrk->req);
286		391
287	worker_clear (wrk);	392	etp_worker_clear (wrk);
288	worker_free (wrk);	393	etp_worker_free (wrk);
289	}	394	}
290		395
291	started = 0;	396	started = 0;
292	idle = 0;	397	idle = 0;
293	nreqs = 0;	398	nreqs = 0;
…		…
302	{	407	{
303	X_THREAD_ATFORK (etp_atfork_prepare, etp_atfork_parent, etp_atfork_child);	408	X_THREAD_ATFORK (etp_atfork_prepare, etp_atfork_parent, etp_atfork_child);
304	}	409	}
305		410
306	static int	411	static int
307	etp_init (etp_pool *etp, void (*want_poll)(void), void (*done_poll)(void))	412	etp_init (void (*want_poll)(void), void (*done_poll)(void))
308	{	413	{
309	static pthread_once_t doinit = PTHREAD_ONCE_INIT;	414	static pthread_once_t doinit = PTHREAD_ONCE_INIT;
310		415
311	pthread_once (&doinit, etp_once_init);	416	pthread_once (&doinit, etp_once_init);
312		417
313	memset (etp, 0, sizeof *etp);
314
315	etp->want_poll_cb = want_poll;	418	want_poll_cb = want_poll;
316	etp->done_poll_cb = done_poll;	419	done_poll_cb = done_poll;
317	}
318		420
319	static etp_pool etp;
320
321	/*****************************************************************************/
322
323	static void grp_try_feed (eio_req *grp)
324	{
325	while (grp->size < grp->int2 && !EIO_CANCELLED (grp))
326	{
327	int old_len = grp->size;
328
329	EIO_FEED (grp);
330
331	/* stop if no progress has been made */
332	if (old_len == grp->size)
333	{
334	grp->feed = 0;
335	break;
336	}
337	}
338	}
339
340	static int eio_finish (eio_req *req);
341
342	static int grp_dec (eio_req *grp)
343	{
344	--grp->size;
345
346	/* call feeder, if applicable */
347	grp_try_feed (grp);
348
349	/* finish, if done */
350	if (!grp->size && grp->int1)
351	return eio_finish (grp);
352	else
353	return 0;	421	return 0;
354	}	422	}
355		423
356	void eio_destroy (eio_req *req)
357	{
358	if ((req)->flags & EIO_FLAG_PTR1_FREE) free (req->ptr1);
359	if ((req)->flags & EIO_FLAG_PTR2_FREE) free (req->ptr2);
360
361	EIO_DESTROY (req);
362	}
363
364	static int eio_finish (eio_req *req)
365	{
366	int res = EIO_FINISH (req);
367
368	if (req->grp)
369	{
370	int res2;
371	eio_req *grp = req->grp;
372
373	/* unlink request */
374	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
375	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
376
377	if (grp->grp_first == req)
378	grp->grp_first = req->grp_next;
379
380	res2 = grp_dec (grp);
381
382	if (!res && res2)
383	res = res2;
384	}
385
386	eio_destroy (req);
387
388	return res;
389	}
390
391	void eio_grp_cancel (eio_req *grp)
392	{
393	for (grp = grp->grp_first; grp; grp = grp->grp_next)
394	eio_cancel (grp);
395	}
396
397	void eio_cancel (eio_req *req)
398	{
399	X_LOCK (etplock);
400	req->flags |= EIO_FLAG_CANCELLED;
401	X_UNLOCK (etplock);
402
403	eio_grp_cancel (req);
404	}
405
406	X_THREAD_PROC (eio_proc);	424	X_THREAD_PROC (etp_proc);
407		425
408	static void start_thread (void)	426	static void etp_start_thread (void)
409	{	427	{
410	worker *wrk = calloc (1, sizeof (worker));	428	etp_worker *wrk = calloc (1, sizeof (etp_worker));
411		429
412	/*TODO*/	430	/*TODO*/
413	assert (("unable to allocate worker thread data", wrk));	431	assert (("unable to allocate worker thread data", wrk));
414		432
415	X_LOCK (etplock);	433	X_LOCK (wrklock);
416		434
417	if (thread_create (&wrk->tid, eio_proc, (void *)wrk))	435	if (thread_create (&wrk->tid, etp_proc, (void *)wrk))
418	{	436	{
419	wrk->prev = &wrk_first;	437	wrk->prev = &wrk_first;
420	wrk->next = wrk_first.next;	438	wrk->next = wrk_first.next;
421	wrk_first.next->prev = wrk;	439	wrk_first.next->prev = wrk;
422	wrk_first.next = wrk;	440	wrk_first.next = wrk;
423	++started;	441	++started;
424	}	442	}
425	else	443	else
426	free (wrk);	444	free (wrk);
427		445
428	X_UNLOCK (etplock);	446	X_UNLOCK (wrklock);
429	}	447	}
430		448
431	static void maybe_start_thread (void)	449	static void etp_maybe_start_thread (void)
432	{	450	{
433	if (eio_nthreads () >= wanted)	451	if (expect_true (etp_nthreads () >= wanted))
434	return;	452	return;
435		453
436	/* todo: maybe use idle here, but might be less exact */	454	/* todo: maybe use idle here, but might be less exact */
437	if (0 <= (int)eio_nthreads () + (int)eio_npending () - (int)eio_nreqs ())	455	if (expect_true (0 <= (int)etp_nthreads () + (int)etp_npending () - (int)etp_nreqs ()))
438	return;	456	return;
439		457
440	start_thread ();	458	etp_start_thread ();
441	}	459	}
442		460
443	void eio_submit (eio_req *req)
444	{
445	req->pri += EIO_PRI_BIAS;
446
447	if (req->pri < EIO_PRI_MIN + EIO_PRI_BIAS) req->pri = EIO_PRI_MIN + EIO_PRI_BIAS;
448	if (req->pri > EIO_PRI_MAX + EIO_PRI_BIAS) req->pri = EIO_PRI_MAX + EIO_PRI_BIAS;
449
450	++nreqs;
451
452	X_LOCK (reqlock);
453	++nready;
454	reqq_push (&req_queue, req);
455	X_COND_SIGNAL (reqwait);
456	X_UNLOCK (reqlock);
457
458	maybe_start_thread ();
459	}
460
461	static void end_thread (void)	461	static void etp_end_thread (void)
462	{	462	{
463	eio_req *req = calloc (1, sizeof (eio_req));	463	eio_req *req = calloc (1, sizeof (eio_req));
464		464
465	req->type = EIO_QUIT;	465	req->type = -1;
466	req->pri = EIO_PRI_MAX + EIO_PRI_BIAS;	466	req->pri = ETP_PRI_MAX - ETP_PRI_MIN;
467		467
468	X_LOCK (reqlock);	468	X_LOCK (reqlock);
469	reqq_push (&req_queue, req);	469	reqq_push (&req_queue, req);
470	X_COND_SIGNAL (reqwait);	470	X_COND_SIGNAL (reqwait);
471	X_UNLOCK (reqlock);	471	X_UNLOCK (reqlock);
472		472
473	X_LOCK (etplock);	473	X_LOCK (wrklock);
474	--started;	474	--started;
475	X_UNLOCK (etplock);	475	X_UNLOCK (wrklock);
476	}	476	}
477		477
478	void eio_set_max_poll_time (double nseconds)
479	{
480	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
481	etp.max_poll_time = nseconds;
482	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
483	}
484
485	void eio_set_max_poll_reqs (unsigned int maxreqs)
486	{
487	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
488	etp.max_poll_reqs = maxreqs;
489	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
490	}
491
492	void eio_set_max_idle (unsigned int nthreads)
493	{
494	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
495	max_idle = nthreads <= 0 ? 1 : nthreads;
496	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
497	}
498
499	void eio_set_min_parallel (unsigned int nthreads)
500	{
501	if (wanted < nthreads)
502	wanted = nthreads;
503	}
504
505	void eio_set_max_parallel (unsigned int nthreads)
506	{
507	if (wanted > nthreads)
508	wanted = nthreads;
509
510	while (started > wanted)
511	end_thread ();
512	}
513
514	int eio_poll (void)	478	static int etp_poll (void)
515	{	479	{
516	int maxreqs = etp.max_poll_reqs;	480	unsigned int maxreqs;
		481	unsigned int maxtime;
517	struct timeval tv_start, tv_now;	482	struct timeval tv_start, tv_now;
518	eio_req *req;
519		483
520	if (etp.max_poll_time)	484	X_LOCK (reslock);
		485	maxreqs = max_poll_reqs;
		486	maxtime = max_poll_time;
		487	X_UNLOCK (reslock);
		488
		489	if (maxtime)
521	gettimeofday (&tv_start, 0);	490	gettimeofday (&tv_start, 0);
522		491
523	for (;;)	492	for (;;)
524	{	493	{
		494	ETP_REQ *req;
		495
525	maybe_start_thread ();	496	etp_maybe_start_thread ();
526		497
527	X_LOCK (reslock);	498	X_LOCK (reslock);
528	req = reqq_shift (&res_queue);	499	req = reqq_shift (&res_queue);
529		500
530	if (req)	501	if (req)
531	{	502	{
532	--npending;	503	--npending;
533		504
534	if (!res_queue.size && etp.done_poll_cb)	505	if (!res_queue.size && done_poll_cb)
535	etp.done_poll_cb ();	506	done_poll_cb ();
536	}	507	}
537		508
538	X_UNLOCK (reslock);	509	X_UNLOCK (reslock);
539		510
540	if (!req)	511	if (!req)
541	return 0;	512	return 0;
542		513
		514	X_LOCK (reqlock);
543	--nreqs;	515	--nreqs;
		516	X_UNLOCK (reqlock);
544		517
545	if (req->type == EIO_GROUP && req->size)	518	if (expect_false (req->type == EIO_GROUP && req->size))
546	{	519	{
547	req->int1 = 1; /* mark request as delayed */	520	req->int1 = 1; /* mark request as delayed */
548	continue;	521	continue;
549	}	522	}
550	else	523	else
551	{	524	{
552	int res = eio_finish (req);	525	int res = ETP_FINISH (req);
553	if (res)	526	if (expect_false (res))
554	return res;	527	return res;
555	}	528	}
556		529
557	if (maxreqs && !--maxreqs)	530	if (expect_false (maxreqs && !--maxreqs))
558	break;	531	break;
559		532
560	if (etp.max_poll_time)	533	if (maxtime)
561	{	534	{
562	gettimeofday (&tv_now, 0);	535	gettimeofday (&tv_now, 0);
563		536
564	if (tvdiff (&tv_start, &tv_now) >= etp.max_poll_time)	537	if (tvdiff (&tv_start, &tv_now) >= maxtime)
565	break;	538	break;
566	}	539	}
567	}	540	}
568		541
569	errno = EAGAIN;	542	errno = EAGAIN;
570	return -1;	543	return -1;
571	}	544	}
572		545
		546	static void etp_cancel (ETP_REQ *req)
		547	{
		548	X_LOCK (wrklock);
		549	req->flags |= EIO_FLAG_CANCELLED;
		550	X_UNLOCK (wrklock);
		551
		552	eio_grp_cancel (req);
		553	}
		554
		555	static void etp_submit (ETP_REQ *req)
		556	{
		557	req->pri -= ETP_PRI_MIN;
		558
		559	if (expect_false (req->pri < ETP_PRI_MIN - ETP_PRI_MIN)) req->pri = ETP_PRI_MIN - ETP_PRI_MIN;
		560	if (expect_false (req->pri > ETP_PRI_MAX - ETP_PRI_MIN)) req->pri = ETP_PRI_MAX - ETP_PRI_MIN;
		561
		562	if (expect_false (req->type == EIO_GROUP))
		563	{
		564	/* I hope this is worth it :/ */
		565	X_LOCK (reqlock);
		566	++nreqs;
		567	X_UNLOCK (reqlock);
		568
		569	X_LOCK (reslock);
		570
		571	++npending;
		572
		573	if (!reqq_push (&res_queue, req) && want_poll_cb)
		574	want_poll_cb ();
		575
		576	X_UNLOCK (reslock);
		577	}
		578	else
		579	{
		580	X_LOCK (reqlock);
		581	++nreqs;
		582	++nready;
		583	reqq_push (&req_queue, req);
		584	X_COND_SIGNAL (reqwait);
		585	X_UNLOCK (reqlock);
		586
		587	etp_maybe_start_thread ();
		588	}
		589	}
		590
		591	static void etp_set_max_poll_time (double nseconds)
		592	{
		593	if (WORDACCESS_UNSAFE) X_LOCK (reslock);
		594	max_poll_time = nseconds;
		595	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);
		596	}
		597
		598	static void etp_set_max_poll_reqs (unsigned int maxreqs)
		599	{
		600	if (WORDACCESS_UNSAFE) X_LOCK (reslock);
		601	max_poll_reqs = maxreqs;
		602	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);
		603	}
		604
		605	static void etp_set_max_idle (unsigned int nthreads)
		606	{
		607	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
		608	max_idle = nthreads <= 0 ? 1 : nthreads;
		609	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
		610	}
		611
		612	static void etp_set_min_parallel (unsigned int nthreads)
		613	{
		614	if (wanted < nthreads)
		615	wanted = nthreads;
		616	}
		617
		618	static void etp_set_max_parallel (unsigned int nthreads)
		619	{
		620	if (wanted > nthreads)
		621	wanted = nthreads;
		622
		623	while (started > wanted)
		624	etp_end_thread ();
		625	}
		626
		627	/*****************************************************************************/
		628
		629	static void grp_try_feed (eio_req *grp)
		630	{
		631	while (grp->size < grp->int2 && !EIO_CANCELLED (grp))
		632	{
		633	grp->flags &= ~EIO_FLAG_GROUPADD;
		634
		635	EIO_FEED (grp);
		636
		637	/* stop if no progress has been made */
		638	if (!(grp->flags & EIO_FLAG_GROUPADD))
		639	{
		640	grp->feed = 0;
		641	break;
		642	}
		643	}
		644	}
		645
		646	static int grp_dec (eio_req *grp)
		647	{
		648	--grp->size;
		649
		650	/* call feeder, if applicable */
		651	grp_try_feed (grp);
		652
		653	/* finish, if done */
		654	if (!grp->size && grp->int1)
		655	return eio_finish (grp);
		656	else
		657	return 0;
		658	}
		659
		660	void eio_destroy (eio_req *req)
		661	{
		662	if ((req)->flags & EIO_FLAG_PTR1_FREE) free (req->ptr1);
		663	if ((req)->flags & EIO_FLAG_PTR2_FREE) free (req->ptr2);
		664
		665	EIO_DESTROY (req);
		666	}
		667
		668	static int eio_finish (eio_req *req)
		669	{
		670	int res = EIO_FINISH (req);
		671
		672	if (req->grp)
		673	{
		674	int res2;
		675	eio_req *grp = req->grp;
		676
		677	/* unlink request */
		678	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
		679	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
		680
		681	if (grp->grp_first == req)
		682	grp->grp_first = req->grp_next;
		683
		684	res2 = grp_dec (grp);
		685
		686	if (!res && res2)
		687	res = res2;
		688	}
		689
		690	eio_destroy (req);
		691
		692	return res;
		693	}
		694
		695	void eio_grp_cancel (eio_req *grp)
		696	{
		697	for (grp = grp->grp_first; grp; grp = grp->grp_next)
		698	eio_cancel (grp);
		699	}
		700
		701	void eio_cancel (eio_req *req)
		702	{
		703	etp_cancel (req);
		704	}
		705
		706	void eio_submit (eio_req *req)
		707	{
		708	etp_submit (req);
		709	}
		710
		711	unsigned int eio_nreqs (void)
		712	{
		713	return etp_nreqs ();
		714	}
		715
		716	unsigned int eio_nready (void)
		717	{
		718	return etp_nready ();
		719	}
		720
		721	unsigned int eio_npending (void)
		722	{
		723	return etp_npending ();
		724	}
		725
		726	unsigned int eio_nthreads (void)
		727	{
		728	return etp_nthreads ();
		729	}
		730
		731	void eio_set_max_poll_time (double nseconds)
		732	{
		733	etp_set_max_poll_time (nseconds);
		734	}
		735
		736	void eio_set_max_poll_reqs (unsigned int maxreqs)
		737	{
		738	etp_set_max_poll_reqs (maxreqs);
		739	}
		740
		741	void eio_set_max_idle (unsigned int nthreads)
		742	{
		743	etp_set_max_idle (nthreads);
		744	}
		745
		746	void eio_set_min_parallel (unsigned int nthreads)
		747	{
		748	etp_set_min_parallel (nthreads);
		749	}
		750
		751	void eio_set_max_parallel (unsigned int nthreads)
		752	{
		753	etp_set_max_parallel (nthreads);
		754	}
		755
		756	int eio_poll (void)
		757	{
		758	return etp_poll ();
		759	}
		760
573	/*****************************************************************************/	761	/*****************************************************************************/
574	/* work around various missing functions */	762	/* work around various missing functions */
575		763
576	#if !HAVE_PREADWRITE	764	#if !HAVE_PREADWRITE
		765	# undef pread
		766	# undef pwrite
577	# define pread eio__pread	767	# define pread eio__pread
578	# define pwrite eio__pwrite	768	# define pwrite eio__pwrite
579
580	/*
581	* make our pread/pwrite safe against themselves, but not against
582	* normal read/write by using a mutex. slows down execution a lot,
583	* but that's your problem, not mine.
584	*/
585	static mutex_t preadwritelock = X_MUTEX_INIT;
586		769
587	static ssize_t	770	static ssize_t
588	eio__pread (int fd, void *buf, size_t count, off_t offset)	771	eio__pread (int fd, void *buf, size_t count, off_t offset)
589	{	772	{
590	ssize_t res;	773	ssize_t res;
…		…
608		791
609	X_LOCK (preadwritelock);	792	X_LOCK (preadwritelock);
610	ooffset = lseek (fd, 0, SEEK_CUR);	793	ooffset = lseek (fd, 0, SEEK_CUR);
611	lseek (fd, offset, SEEK_SET);	794	lseek (fd, offset, SEEK_SET);
612	res = write (fd, buf, count);	795	res = write (fd, buf, count);
613	lseek (fd, offset, SEEK_SET);	796	lseek (fd, ooffset, SEEK_SET);
614	X_UNLOCK (preadwritelock);	797	X_UNLOCK (preadwritelock);
615		798
616	return res;	799	return res;
617	}	800	}
618	#endif	801	#endif
619		802
620	#ifndef HAVE_FUTIMES	803	#ifndef HAVE_FUTIMES
621		804
		805	# undef utimes
		806	# undef futimes
622	# define utimes(path,times) eio__utimes (path, times)	807	# define utimes(path,times) eio__utimes (path, times)
623	# define futimes(fd,times) eio__futimes (fd, times)	808	# define futimes(fd,times) eio__futimes (fd, times)
624		809
625	static int	810	static int
626	eio__utimes (const char *filename, const struct timeval times[2])	811	eio__utimes (const char *filename, const struct timeval times[2])
…		…
645	}	830	}
646		831
647	#endif	832	#endif
648		833
649	#if !HAVE_FDATASYNC	834	#if !HAVE_FDATASYNC
		835	# undef fdatasync
650	# define fdatasync fsync	836	# define fdatasync(fd) fsync (fd)
651	#endif	837	#endif
		838
		839	/* sync_file_range always needs emulation */
		840	int
		841	eio__sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags)
		842	{
		843	#if HAVE_SYNC_FILE_RANGE
		844	int res;
		845
		846	if (EIO_SYNC_FILE_RANGE_WAIT_BEFORE != SYNC_FILE_RANGE_WAIT_BEFORE
		847	|| EIO_SYNC_FILE_RANGE_WRITE != SYNC_FILE_RANGE_WRITE
		848	|| EIO_SYNC_FILE_RANGE_WAIT_AFTER != SYNC_FILE_RANGE_WAIT_AFTER)
		849	{
		850	flags = 0
		851	| (flags & EIO_SYNC_FILE_RANGE_WAIT_BEFORE ? SYNC_FILE_RANGE_WAIT_BEFORE : 0)
		852	| (flags & EIO_SYNC_FILE_RANGE_WRITE ? SYNC_FILE_RANGE_WRITE : 0)
		853	| (flags & EIO_SYNC_FILE_RANGE_WAIT_AFTER ? SYNC_FILE_RANGE_WAIT_AFTER : 0);
		854	}
		855
		856	res = sync_file_range (fd, offset, nbytes, flags);
		857
		858	if (!res || errno != ENOSYS)
		859	return res;
		860	#endif
		861
		862	/* even though we could play tricks with the flags, it's better to always
		863	* call fdatasync, as thta matches the expectation of it's users best */
		864	return fdatasync (fd);
		865	}
652		866
653	#if !HAVE_READAHEAD	867	#if !HAVE_READAHEAD
		868	# undef readahead
654	# define readahead(fd,offset,count) eio__readahead (fd, offset, count, self)	869	# define readahead(fd,offset,count) eio__readahead (fd, offset, count, self)
655		870
656	static ssize_t	871	static ssize_t
657	eio__readahead (int fd, off_t offset, size_t count, worker *self)	872	eio__readahead (int fd, off_t offset, size_t count, etp_worker *self)
658	{	873	{
659	size_t todo = count;	874	size_t todo = count;
660	dBUF;	875	dBUF;
661		876
662	while (todo > 0)	877	while (todo > 0)
…		…
672	return count;	887	return count;
673	}	888	}
674		889
675	#endif	890	#endif
676		891
677	#if !HAVE_READDIR_R
678	# define readdir_r eio__readdir_r
679
680	static mutex_t readdirlock = X_MUTEX_INIT;
681
682	static int
683	eio__readdir_r (DIR *dirp, EIO_STRUCT_DIRENT *ent, EIO_STRUCT_DIRENT **res)
684	{
685	EIO_STRUCT_DIRENT *e;
686	int errorno;
687
688	X_LOCK (readdirlock);
689
690	e = readdir (dirp);
691	errorno = errno;
692
693	if (e)
694	{
695	*res = ent;
696	strcpy (ent->d_name, e->d_name);
697	}
698	else
699	*res = 0;
700
701	X_UNLOCK (readdirlock);
702
703	errno = errorno;
704	return e ? 0 : -1;
705	}
706	#endif
707
708	/* sendfile always needs emulation */	892	/* sendfile always needs emulation */
709	static ssize_t	893	static ssize_t
710	eio__sendfile (int ofd, int ifd, off_t offset, size_t count, worker *self)	894	eio__sendfile (int ofd, int ifd, off_t offset, size_t count, etp_worker *self)
711	{	895	{
712	ssize_t res;	896	ssize_t res;
713		897
714	if (!count)	898	if (!count)
715	return 0;	899	return 0;
…		…
797	}	981	}
798		982
799	return res;	983	return res;
800	}	984	}
801		985
		986	static int
		987	eio_dent_cmp (const void *a_, const void *b_)
		988	{
		989	const eio_dirent *a = (const eio_dirent *)a_;
		990	const eio_dirent *b = (const eio_dirent *)b_;
		991
		992	return (int)b->score - (int)a->score ? (int)b->score - (int)a->score
		993	: a->inode < b->inode ? -1 : a->inode > b->inode ? 1 : 0; /* int might be < ino_t */
		994	}
		995
802	/* read a full directory */	996	/* read a full directory */
803	static void	997	static void
804	eio__scandir (eio_req *req, worker *self)	998	eio__scandir (eio_req *req, etp_worker *self)
805	{	999	{
806	DIR *dirp;	1000	DIR *dirp;
807	union
808	{
809	EIO_STRUCT_DIRENT d;
810	char b [offsetof (EIO_STRUCT_DIRENT, d_name) + NAME_MAX + 1];
811	} *u;
812	EIO_STRUCT_DIRENT *entp;	1001	EIO_STRUCT_DIRENT *entp;
813	char *name, *names;	1002	unsigned char *name, *names;
814	int memlen = 4096;	1003	int namesalloc = 4096;
815	int memofs = 0;	1004	int namesoffs = 0;
		1005	int flags = req->int1;
		1006	eio_dirent *dents = 0;
		1007	int dentalloc = 128;
816	int res = 0;	1008	int dentoffs = 0;
817		1009
		1010	req->result = -1;
		1011
		1012	if (!(flags & EIO_READDIR_DENTS))
		1013	flags &= ~(EIO_READDIR_DIRS_FIRST | EIO_READDIR_STAT_ORDER);
		1014
818	X_LOCK (etplock);	1015	X_LOCK (wrklock);
		1016	/* the corresponding closedir is in ETP_WORKER_CLEAR */
819	self->dirp = dirp = opendir (req->ptr1);	1017	self->dirp = dirp = opendir (req->ptr1);
820	self->dbuf = u = malloc (sizeof (*u));
821	req->flags |= EIO_FLAG_PTR2_FREE;	1018	req->flags |= EIO_FLAG_PTR1_FREE | EIO_FLAG_PTR2_FREE;
822	req->ptr2 = names = malloc (memlen);	1019	req->ptr1 = names = malloc (namesalloc);
		1020	req->ptr2 = dents = flags ? malloc (dentalloc * sizeof (eio_dirent)) : 0;
823	X_UNLOCK (etplock);	1021	X_UNLOCK (wrklock);
824		1022
825	if (dirp && u && names)	1023	if (dirp && names && (!flags || dents))
826	for (;;)	1024	for (;;)
827	{	1025	{
828	errno = 0;	1026	errno = 0;
829	readdir_r (dirp, &u->d, &entp);	1027	entp = readdir (dirp);
830		1028
831	if (!entp)	1029	if (!entp)
		1030	{
		1031	if (errno)
		1032	break;
		1033
		1034	/* sort etc. */
		1035	req->int1 = flags;
		1036	req->result = dentoffs;
		1037
		1038	if (dents)
		1039	{
		1040	eio_dirent *ent = dents + dentoffs;
		1041
		1042	while (ent > dents)
		1043	(--ent)->name = names + (size_t)ent->name;
		1044	}
		1045
		1046	if (flags & EIO_READDIR_STAT_ORDER
		1047	|| !(~flags & (EIO_READDIR_DIRS_FIRST | EIO_READDIR_FOUND_UNKNOWN)))
		1048	{
		1049	/* pray your qsort doesn't use quicksort */
		1050	qsort (dents, dentoffs, sizeof (*dents), eio_dent_cmp); /* score depends of DIRS_FIRST */
		1051	}
		1052	else if (flags & EIO_READDIR_DIRS_FIRST)
		1053	{
		1054	/* in this case, all is known, and we just put dirs first and sort them */
		1055	eio_dirent *ent = dents + dentoffs;
		1056	eio_dirent *dir = dents;
		1057
		1058	while (ent > dir)
		1059	{
		1060	if (dir->type == DT_DIR)
		1061	++dir;
		1062	else
		1063	{
		1064	--ent;
		1065
		1066	if (ent->type == DT_DIR)
		1067	{
		1068	eio_dirent tmp = *dir;
		1069	*dir = *ent;
		1070	*ent = tmp;
		1071
		1072	++dir;
		1073	}
		1074	}
		1075	}
		1076
		1077	/* now sort the dirs only */
		1078	qsort (dents, dir - dents, sizeof (*dents), eio_dent_cmp);
		1079	}
		1080
		1081	/* only provide the names array unless DENTS is specified */
		1082	if (!(flags & EIO_READDIR_DENTS))
		1083	{
		1084	X_LOCK (wrklock);
		1085	assert (!dents);
		1086	req->ptr1 = 0;
		1087	req->ptr2 = names;
		1088	X_UNLOCK (wrklock);
		1089	}
		1090
832	break;	1091	break;
		1092	}
833		1093
		1094	/* now add the entry to our list(s) */
834	name = entp->d_name;	1095	name = entp->d_name;
835		1096
		1097	/* skip . and .. entries */
836	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))	1098	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
837	{	1099	{
838	int len = strlen (name) + 1;	1100	int len = strlen (name) + 1;
839		1101
840	res++;	1102	while (expect_false (namesoffs + len > namesalloc))
841
842	while (memofs + len > memlen)
843	{	1103	{
844	memlen *= 2;	1104	namesalloc *= 2;
845	X_LOCK (etplock);	1105	X_LOCK (wrklock);
846	req->ptr2 = names = realloc (names, memlen);	1106	req->ptr1 = names = realloc (names, namesalloc);
847	X_UNLOCK (etplock);	1107	X_UNLOCK (wrklock);
848		1108
849	if (!names)	1109	if (!names)
850	break;	1110	break;
851	}	1111	}
852		1112
853	memcpy (names + memofs, name, len);	1113	memcpy (names + namesoffs, name, len);
		1114
		1115	if (dents)
		1116	{
		1117	struct eio_dirent *ent;
		1118
		1119	if (expect_false (dentoffs == dentalloc))
		1120	{
		1121	dentalloc *= 2;
		1122	X_LOCK (wrklock);
		1123	req->ptr2 = dents = realloc (dents, dentalloc * sizeof (eio_dirent));
		1124	X_UNLOCK (wrklock);
		1125
		1126	if (!dents)
		1127	break;
		1128	}
		1129
		1130	ent = dents + dentoffs;
		1131
		1132	ent->name = (char *)(size_t)namesoffs; /* rather dirtily we store the offset in the pointer */
		1133	ent->namelen = len - 1;
		1134	ent->inode = D_INO (entp);
		1135
		1136	switch (D_TYPE (entp))
		1137	{
		1138	default:
		1139	ent->type = EIO_DT_UNKNOWN;
		1140	flags |= EIO_READDIR_FOUND_UNKNOWN;
		1141	break;
		1142
		1143	#ifdef DT_FIFO
		1144	case DT_FIFO: ent->type = EIO_DT_FIFO; break;
		1145	#endif
		1146	#ifdef DT_CHR
		1147	case DT_CHR: ent->type = EIO_DT_CHR; break;
		1148	#endif
		1149	#ifdef DT_DIR
		1150	case DT_DIR: ent->type = EIO_DT_DIR; break;
		1151	#endif
		1152	#ifdef DT_BLK
		1153	case DT_BLK: ent->type = EIO_DT_BLK; break;
		1154	#endif
		1155	#ifdef DT_REG
		1156	case DT_REG: ent->type = EIO_DT_REG; break;
		1157	#endif
		1158	#ifdef DT_LNK
		1159	case DT_LNK: ent->type = EIO_DT_LNK; break;
		1160	#endif
		1161	#ifdef DT_SOCK
		1162	case DT_SOCK: ent->type = EIO_DT_SOCK; break;
		1163	#endif
		1164	#ifdef DT_WHT
		1165	case DT_WHT: ent->type = EIO_DT_WHT; break;
		1166	#endif
		1167	}
		1168
		1169	ent->score = 0;
		1170
		1171	if (flags & EIO_READDIR_DIRS_FIRST)
		1172	{
		1173	if (ent->type == EIO_DT_UNKNOWN)
		1174	{
		1175	if (*name == '.') /* leading dots are likely directories, and, in any case, rare */
		1176	ent->score = 98;
		1177	else if (!strchr (name, '.')) /* absense of dots indicate likely dirs */
		1178	ent->score = len <= 4 ? 5 : len <= 7 ? 4 : 1; /* shorter == more likely dir, but avoid too many classes */
		1179	}
		1180	else if (ent->type == DT_DIR)
		1181	ent->score = 100;
		1182	}
		1183	}
		1184
854	memofs += len;	1185	namesoffs += len;
		1186	++dentoffs;
855	}	1187	}
856	}	1188	}
857		1189	else
858	if (errno)
859	res = -1;
860
861	req->result = res;	1190	req->result = -1;
		1191	}
		1192
		1193	#if !(_POSIX_MAPPED_FILES && _POSIX_SYNCHRONIZED_IO)
		1194	# undef msync
		1195	# define msync(a,b,c) ((errno = ENOSYS), -1)
		1196	#endif
		1197
		1198	int
		1199	eio__mtouch (void *mem, size_t len, int flags)
		1200	{
		1201	intptr_t addr = (intptr_t)mem;
		1202	intptr_t end = addr + len;
		1203	#ifdef PAGESIZE
		1204	const intptr_t page = PAGESIZE;
		1205	#else
		1206	static intptr_t page;
		1207
		1208	if (!page)
		1209	page = sysconf (_SC_PAGESIZE);
		1210	#endif
		1211
		1212	addr &= ~(page - 1); /* assume page size is always a power of two */
		1213
		1214	if (addr < end)
		1215	if (flags) /* modify */
		1216	do { *((volatile sig_atomic_t *)addr) |= 0; } while ((addr += page) < len);
		1217	else
		1218	do { *((volatile sig_atomic_t *)addr) ; } while ((addr += page) < len);
		1219
		1220	return 0;
862	}	1221	}
863		1222
864	/*****************************************************************************/	1223	/*****************************************************************************/
865		1224
866	#define ALLOC(len) \	1225	#define ALLOC(len) \
867	if (!req->ptr2) \	1226	if (!req->ptr2) \
868	{ \	1227	{ \
869	X_LOCK (etplock); \	1228	X_LOCK (wrklock); \
870	req->flags |= EIO_FLAG_PTR2_FREE; \	1229	req->flags |= EIO_FLAG_PTR2_FREE; \
871	X_UNLOCK (etplock); \	1230	X_UNLOCK (wrklock); \
872	req->ptr2 = malloc (len); \	1231	req->ptr2 = malloc (len); \
873	if (!req->ptr2) \	1232	if (!req->ptr2) \
874	{ \	1233	{ \
875	errno = ENOMEM; \	1234	errno = ENOMEM; \
876	req->result = -1; \	1235	req->result = -1; \
877	break; \	1236	break; \
878	} \	1237	} \
879	}	1238	}
880		1239
881	X_THREAD_PROC (eio_proc)	1240	X_THREAD_PROC (etp_proc)
882	{	1241	{
883	eio_req *req;	1242	ETP_REQ *req;
884	struct timespec ts;	1243	struct timespec ts;
885	worker *self = (worker *)thr_arg;	1244	etp_worker *self = (etp_worker *)thr_arg;
886		1245
887	/* try to distribute timeouts somewhat randomly */	1246	/* try to distribute timeouts somewhat randomly */
888	ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL);	1247	ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL);
889		1248
890	for (;;)	1249	for (;;)
891	{	1250	{
892	ts.tv_sec = time (0) + IDLE_TIMEOUT;
893
894	X_LOCK (reqlock);	1251	X_LOCK (reqlock);
895		1252
896	for (;;)	1253	for (;;)
897	{	1254	{
898	self->req = req = reqq_shift (&req_queue);	1255	self->req = req = reqq_shift (&req_queue);
…		…
900	if (req)	1257	if (req)
901	break;	1258	break;
902		1259
903	++idle;	1260	++idle;
904		1261
		1262	ts.tv_sec = time (0) + IDLE_TIMEOUT;
905	if (X_COND_TIMEDWAIT (reqwait, reqlock, ts) == ETIMEDOUT)	1263	if (X_COND_TIMEDWAIT (reqwait, reqlock, ts) == ETIMEDOUT)
906	{	1264	{
907	if (idle > max_idle)	1265	if (idle > max_idle)
908	{	1266	{
909	--idle;	1267	--idle;
910	X_UNLOCK (reqlock);	1268	X_UNLOCK (reqlock);
911	X_LOCK (etplock);	1269	X_LOCK (wrklock);
912	--started;	1270	--started;
913	X_UNLOCK (etplock);	1271	X_UNLOCK (wrklock);
914	goto quit;	1272	goto quit;
915	}	1273	}
916		1274
917	/* we are allowed to idle, so do so without any timeout */	1275	/* we are allowed to idle, so do so without any timeout */
918	X_COND_WAIT (reqwait, reqlock);	1276	X_COND_WAIT (reqwait, reqlock);
919	ts.tv_sec = time (0) + IDLE_TIMEOUT;
920	}	1277	}
921		1278
922	--idle;	1279	--idle;
923	}	1280	}
924		1281
925	--nready;	1282	--nready;
926		1283
927	X_UNLOCK (reqlock);	1284	X_UNLOCK (reqlock);
928		1285
929	errno = 0; /* strictly unnecessary */	1286	if (req->type < 0)
		1287	goto quit;
930		1288
931	if (!EIO_CANCELLED (req))	1289	if (!EIO_CANCELLED (req))
932	switch (req->type)	1290	ETP_EXECUTE (self, req);
933	{
934	case EIO_READ: ALLOC (req->size);
935	req->result = req->offs >= 0
936	? pread (req->int1, req->ptr2, req->size, req->offs)
937	: read (req->int1, req->ptr2, req->size); break;
938	case EIO_WRITE: req->result = req->offs >= 0
939	? pwrite (req->int1, req->ptr2, req->size, req->offs)
940	: write (req->int1, req->ptr2, req->size); break;
941
942	case EIO_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
943	case EIO_SENDFILE: req->result = eio__sendfile (req->int1, req->int2, req->offs, req->size, self); break;
944
945	case EIO_STAT: ALLOC (sizeof (EIO_STRUCT_STAT));
946	req->result = stat (req->ptr1, (EIO_STRUCT_STAT *)req->ptr2); break;
947	case EIO_LSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));
948	req->result = lstat (req->ptr1, (EIO_STRUCT_STAT *)req->ptr2); break;
949	case EIO_FSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));
950	req->result = fstat (req->int1, (EIO_STRUCT_STAT *)req->ptr2); break;
951
952	case EIO_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break;
953	case EIO_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
954	case EIO_CHMOD: req->result = chmod (req->ptr1, (mode_t)req->int2); break;
955	case EIO_FCHMOD: req->result = fchmod (req->int1, (mode_t)req->int2); break;
956	case EIO_TRUNCATE: req->result = truncate (req->ptr1, req->offs); break;
957	case EIO_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break;
958
959	case EIO_OPEN: req->result = open (req->ptr1, req->int1, (mode_t)req->int2); break;
960	case EIO_CLOSE: req->result = close (req->int1); break;
961	case EIO_DUP2: req->result = dup2 (req->int1, req->int2); break;
962	case EIO_UNLINK: req->result = unlink (req->ptr1); break;
963	case EIO_RMDIR: req->result = rmdir (req->ptr1); break;
964	case EIO_MKDIR: req->result = mkdir (req->ptr1, (mode_t)req->int2); break;
965	case EIO_RENAME: req->result = rename (req->ptr1, req->ptr2); break;
966	case EIO_LINK: req->result = link (req->ptr1, req->ptr2); break;
967	case EIO_SYMLINK: req->result = symlink (req->ptr1, req->ptr2); break;
968	case EIO_MKNOD: req->result = mknod (req->ptr1, (mode_t)req->int2, (dev_t)req->offs); break;
969
970	case EIO_READLINK: ALLOC (NAME_MAX);
971	req->result = readlink (req->ptr1, req->ptr2, NAME_MAX); break;
972
973	case EIO_SYNC: req->result = 0; sync (); break;
974	case EIO_FSYNC: req->result = fsync (req->int1); break;
975	case EIO_FDATASYNC: req->result = fdatasync (req->int1); break;
976
977	case EIO_READDIR: eio__scandir (req, self); break;
978
979	case EIO_BUSY:
980	#ifdef _WIN32
981	Sleep (req->nv1 * 1000.);
982	#else
983	{
984	struct timeval tv;
985
986	tv.tv_sec = req->nv1;
987	tv.tv_usec = (req->nv1 - tv.tv_sec) * 1000000.;
988
989	req->result = select (0, 0, 0, 0, &tv);
990	}
991	#endif
992	break;
993
994	case EIO_UTIME:
995	case EIO_FUTIME:
996	{
997	struct timeval tv[2];
998	struct timeval *times;
999
1000	if (req->nv1 != -1. || req->nv2 != -1.)
1001	{
1002	tv[0].tv_sec = req->nv1;
1003	tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.;
1004	tv[1].tv_sec = req->nv2;
1005	tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.;
1006
1007	times = tv;
1008	}
1009	else
1010	times = 0;
1011
1012
1013	req->result = req->type == EIO_FUTIME
1014	? futimes (req->int1, times)
1015	: utimes (req->ptr1, times);
1016	}
1017
1018	case EIO_GROUP:
1019	case EIO_NOP:
1020	req->result = 0;
1021	break;
1022
1023	case EIO_QUIT:
1024	goto quit;
1025
1026	default:
1027	req->result = -1;
1028	break;
1029	}
1030
1031	req->errorno = errno;
1032		1291
1033	X_LOCK (reslock);	1292	X_LOCK (reslock);
1034		1293
1035	++npending;	1294	++npending;
1036		1295
1037	if (!reqq_push (&res_queue, req) && etp.want_poll_cb)	1296	if (!reqq_push (&res_queue, req) && want_poll_cb)
1038	etp.want_poll_cb ();	1297	want_poll_cb ();
1039		1298
1040	self->req = 0;	1299	self->req = 0;
1041	worker_clear (self);	1300	etp_worker_clear (self);
1042		1301
1043	X_UNLOCK (reslock);	1302	X_UNLOCK (reslock);
1044	}	1303	}
1045		1304
1046	quit:	1305	quit:
1047	X_LOCK (etplock);	1306	X_LOCK (wrklock);
1048	worker_free (self);	1307	etp_worker_free (self);
1049	X_UNLOCK (etplock);	1308	X_UNLOCK (wrklock);
1050		1309
1051	return 0;	1310	return 0;
1052	}	1311	}
1053		1312
1054	/*****************************************************************************/	1313	/*****************************************************************************/
1055		1314
1056	int eio_init (void (*want_poll)(void), void (*done_poll)(void))	1315	int eio_init (void (*want_poll)(void), void (*done_poll)(void))
1057	{	1316	{
1058	etp_init (&etp, want_poll, done_poll);	1317	return etp_init (want_poll, done_poll);
1059	}	1318	}
1060		1319
1061	static void eio_api_destroy (eio_req *req)	1320	static void eio_api_destroy (eio_req *req)
1062	{	1321	{
1063	free (req);	1322	free (req);
…		…
1085	{ \	1344	{ \
1086	eio_api_destroy (req); \	1345	eio_api_destroy (req); \
1087	return 0; \	1346	return 0; \
1088	}	1347	}
1089		1348
		1349	static void eio_execute (etp_worker *self, eio_req *req)
		1350	{
		1351	errno = 0;
		1352
		1353	switch (req->type)
		1354	{
		1355	case EIO_READ: ALLOC (req->size);
		1356	req->result = req->offs >= 0
		1357	? pread (req->int1, req->ptr2, req->size, req->offs)
		1358	: read (req->int1, req->ptr2, req->size); break;
		1359	case EIO_WRITE: req->result = req->offs >= 0
		1360	? pwrite (req->int1, req->ptr2, req->size, req->offs)
		1361	: write (req->int1, req->ptr2, req->size); break;
		1362
		1363	case EIO_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
		1364	case EIO_SENDFILE: req->result = eio__sendfile (req->int1, req->int2, req->offs, req->size, self); break;
		1365
		1366	case EIO_STAT: ALLOC (sizeof (EIO_STRUCT_STAT));
		1367	req->result = stat (req->ptr1, (EIO_STRUCT_STAT *)req->ptr2); break;
		1368	case EIO_LSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));
		1369	req->result = lstat (req->ptr1, (EIO_STRUCT_STAT *)req->ptr2); break;
		1370	case EIO_FSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));
		1371	req->result = fstat (req->int1, (EIO_STRUCT_STAT *)req->ptr2); break;
		1372
		1373	case EIO_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break;
		1374	case EIO_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
		1375	case EIO_CHMOD: req->result = chmod (req->ptr1, (mode_t)req->int2); break;
		1376	case EIO_FCHMOD: req->result = fchmod (req->int1, (mode_t)req->int2); break;
		1377	case EIO_TRUNCATE: req->result = truncate (req->ptr1, req->offs); break;
		1378	case EIO_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break;
		1379
		1380	case EIO_OPEN: req->result = open (req->ptr1, req->int1, (mode_t)req->int2); break;
		1381	case EIO_CLOSE: req->result = close (req->int1); break;
		1382	case EIO_DUP2: req->result = dup2 (req->int1, req->int2); break;
		1383	case EIO_UNLINK: req->result = unlink (req->ptr1); break;
		1384	case EIO_RMDIR: req->result = rmdir (req->ptr1); break;
		1385	case EIO_MKDIR: req->result = mkdir (req->ptr1, (mode_t)req->int2); break;
		1386	case EIO_RENAME: req->result = rename (req->ptr1, req->ptr2); break;
		1387	case EIO_LINK: req->result = link (req->ptr1, req->ptr2); break;
		1388	case EIO_SYMLINK: req->result = symlink (req->ptr1, req->ptr2); break;
		1389	case EIO_MKNOD: req->result = mknod (req->ptr1, (mode_t)req->int2, (dev_t)req->int3); break;
		1390
		1391	case EIO_READLINK: ALLOC (NAME_MAX);
		1392	req->result = readlink (req->ptr1, req->ptr2, NAME_MAX); break;
		1393
		1394	case EIO_SYNC: req->result = 0; sync (); break;
		1395	case EIO_FSYNC: req->result = fsync (req->int1); break;
		1396	case EIO_FDATASYNC: req->result = fdatasync (req->int1); break;
		1397	case EIO_MSYNC: req->result = msync (req->ptr2, req->size, req->int1); break;
		1398	case EIO_MTOUCH: req->result = eio__mtouch (req->ptr2, req->size, req->int1); break;
		1399	case EIO_SYNC_FILE_RANGE: req->result = eio__sync_file_range (req->int1, req->offs, req->size, req->int2); break;
		1400
		1401	case EIO_READDIR: eio__scandir (req, self); break;
		1402
		1403	case EIO_BUSY:
		1404	#ifdef _WIN32
		1405	Sleep (req->nv1 * 1000.);
		1406	#else
		1407	{
		1408	struct timeval tv;
		1409
		1410	tv.tv_sec = req->nv1;
		1411	tv.tv_usec = (req->nv1 - tv.tv_sec) * 1000000.;
		1412
		1413	req->result = select (0, 0, 0, 0, &tv);
		1414	}
		1415	#endif
		1416	break;
		1417
		1418	case EIO_UTIME:
		1419	case EIO_FUTIME:
		1420	{
		1421	struct timeval tv[2];
		1422	struct timeval *times;
		1423
		1424	if (req->nv1 != -1. || req->nv2 != -1.)
		1425	{
		1426	tv[0].tv_sec = req->nv1;
		1427	tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.;
		1428	tv[1].tv_sec = req->nv2;
		1429	tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.;
		1430
		1431	times = tv;
		1432	}
		1433	else
		1434	times = 0;
		1435
		1436
		1437	req->result = req->type == EIO_FUTIME
		1438	? futimes (req->int1, times)
		1439	: utimes (req->ptr1, times);
		1440	}
		1441	break;
		1442
		1443	case EIO_GROUP:
		1444	abort (); /* handled in eio_request */
		1445
		1446	case EIO_NOP:
		1447	req->result = 0;
		1448	break;
		1449
		1450	case EIO_CUSTOM:
		1451	((void (*)(eio_req *))req->feed) (req);
		1452	break;
		1453
		1454	default:
		1455	req->result = -1;
		1456	break;
		1457	}
		1458
		1459	req->errorno = errno;
		1460	}
		1461
1090	#ifndef EIO_NO_WRAPPERS	1462	#ifndef EIO_NO_WRAPPERS
1091		1463
1092	eio_req *eio_nop (int pri, eio_cb cb, void *data)	1464	eio_req *eio_nop (int pri, eio_cb cb, void *data)
1093	{	1465	{
1094	REQ (EIO_NOP); SEND;	1466	REQ (EIO_NOP); SEND;
…		…
1105	}	1477	}
1106		1478
1107	eio_req *eio_fsync (int fd, int pri, eio_cb cb, void *data)	1479	eio_req *eio_fsync (int fd, int pri, eio_cb cb, void *data)
1108	{	1480	{
1109	REQ (EIO_FSYNC); req->int1 = fd; SEND;	1481	REQ (EIO_FSYNC); req->int1 = fd; SEND;
		1482	}
		1483
		1484	eio_req *eio_msync (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data)
		1485	{
		1486	REQ (EIO_MSYNC); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND;
		1487	}
		1488
		1489	eio_req *eio_mtouch (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data)
		1490	{
		1491	REQ (EIO_MTOUCH); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND;
		1492	}
		1493
		1494	eio_req *eio_sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags, int pri, eio_cb cb, void *data)
		1495	{
		1496	REQ (EIO_SYNC_FILE_RANGE); req->int1 = fd; req->offs = offset; req->size = nbytes; req->int2 = flags; SEND;
1110	}	1497	}
1111		1498
1112	eio_req *eio_fdatasync (int fd, int pri, eio_cb cb, void *data)	1499	eio_req *eio_fdatasync (int fd, int pri, eio_cb cb, void *data)
1113	{	1500	{
1114	REQ (EIO_FDATASYNC); req->int1 = fd; SEND;	1501	REQ (EIO_FDATASYNC); req->int1 = fd; SEND;
…		…
1228	eio_req *eio_rmdir (const char *path, int pri, eio_cb cb, void *data)	1615	eio_req *eio_rmdir (const char *path, int pri, eio_cb cb, void *data)
1229	{	1616	{
1230	return eio__1path (EIO_RMDIR, path, pri, cb, data);	1617	return eio__1path (EIO_RMDIR, path, pri, cb, data);
1231	}	1618	}
1232		1619
1233	eio_req *eio_readdir (const char *path, int pri, eio_cb cb, void *data)	1620	eio_req *eio_readdir (const char *path, int flags, int pri, eio_cb cb, void *data)
1234	{	1621	{
1235	return eio__1path (EIO_READDIR, path, pri, cb, data);	1622	REQ (EIO_READDIR); PATH; req->int1 = flags; SEND;
1236	}	1623	}
1237		1624
1238	eio_req *eio_mknod (const char *path, mode_t mode, dev_t dev, int pri, eio_cb cb, void *data)	1625	eio_req *eio_mknod (const char *path, mode_t mode, dev_t dev, int pri, eio_cb cb, void *data)
1239	{	1626	{
1240	REQ (EIO_MKNOD); PATH; req->int2 = (long)mode; req->int2 = (long)dev; SEND;	1627	REQ (EIO_MKNOD); PATH; req->int2 = (long)mode; req->int3 = (long)dev; SEND;
1241	}	1628	}
1242		1629
1243	static eio_req *	1630	static eio_req *
1244	eio__2path (int type, const char *path, const char *new_path, int pri, eio_cb cb, void *data)	1631	eio__2path (int type, const char *path, const char *new_path, int pri, eio_cb cb, void *data)
1245	{	1632	{
…		…
1269	eio_req *eio_rename (const char *path, const char *new_path, int pri, eio_cb cb, void *data)	1656	eio_req *eio_rename (const char *path, const char *new_path, int pri, eio_cb cb, void *data)
1270	{	1657	{
1271	return eio__2path (EIO_RENAME, path, new_path, pri, cb, data);	1658	return eio__2path (EIO_RENAME, path, new_path, pri, cb, data);
1272	}	1659	}
1273		1660
		1661	eio_req *eio_custom (eio_cb execute, int pri, eio_cb cb, void *data)
		1662	{
		1663	REQ (EIO_CUSTOM); req->feed = (void (*)(eio_req *))execute; SEND;
		1664	}
		1665
1274	#endif	1666	#endif
1275		1667
1276	eio_req *eio_grp (eio_cb cb, void *data)	1668	eio_req *eio_grp (eio_cb cb, void *data)
1277	{	1669	{
1278	const int pri = EIO_PRI_MAX;	1670	const int pri = EIO_PRI_MAX;
…		…
1304		1696
1305	void eio_grp_add (eio_req *grp, eio_req *req)	1697	void eio_grp_add (eio_req *grp, eio_req *req)
1306	{	1698	{
1307	assert (("cannot add requests to IO::AIO::GRP after the group finished", grp->int1 != 2));	1699	assert (("cannot add requests to IO::AIO::GRP after the group finished", grp->int1 != 2));
1308		1700
		1701	grp->flags |= EIO_FLAG_GROUPADD;
		1702
1309	++grp->size;	1703	++grp->size;
1310	req->grp = grp;	1704	req->grp = grp;
1311		1705
1312	req->grp_prev = 0;	1706	req->grp_prev = 0;
1313	req->grp_next = grp->grp_first;	1707	req->grp_next = grp->grp_first;
…		…
1321	/*****************************************************************************/	1715	/*****************************************************************************/
1322	/* misc garbage */	1716	/* misc garbage */
1323		1717
1324	ssize_t eio_sendfile_sync (int ofd, int ifd, off_t offset, size_t count)	1718	ssize_t eio_sendfile_sync (int ofd, int ifd, off_t offset, size_t count)
1325	{	1719	{
1326	worker wrk;	1720	etp_worker wrk;
1327		1721
1328	wrk.dbuf = 0;	1722	wrk.dbuf = 0;
1329		1723
1330	eio__sendfile (ofd, ifd, offset, count, &wrk);	1724	eio__sendfile (ofd, ifd, offset, count, &wrk);
1331		1725

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