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Comparing cvsroot/libeio/eio.c (file contents):
Revision 1.19 by root, Tue Jun 17 23:34:20 2008 UTC vs.
Revision 1.91 by root, Sun Jul 17 04:20:04 2011 UTC

1	/*	1	/*
2	* libeio implementation	2	* libeio implementation
3	*	3	*
4	* Copyright (c) 2007,2008 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"
		46
		47	#ifdef EIO_STACKSIZE
		48	# define XTHREAD_STACKSIZE EIO_STACKSIZE
		49	#endif
41	#include "xthread.h"	50	#include "xthread.h"
42		51
43	#include <errno.h>	52	#include <errno.h>
44	#include <stddef.h>	53	#include <stddef.h>
45	#include <stdlib.h>	54	#include <stdlib.h>
…		…
49	#include <sys/stat.h>	58	#include <sys/stat.h>
50	#include <limits.h>	59	#include <limits.h>
51	#include <fcntl.h>	60	#include <fcntl.h>
52	#include <assert.h>	61	#include <assert.h>
53		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
54	#ifndef EIO_FINISH	78	#ifndef EIO_FINISH
55	# 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
56	#endif	80	#endif
57		81
58	#ifndef EIO_DESTROY	82	#ifndef EIO_DESTROY
…		…
61		85
62	#ifndef EIO_FEED	86	#ifndef EIO_FEED
63	# 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)
64	#endif	88	#endif
65		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
66	#ifdef _WIN32	101	#ifdef _WIN32
67		102
68	/*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)
69		158
70	#else	159	#else
71		160
72	# include "config.h"
73	# include <sys/time.h>	161	#include <sys/time.h>
74	# include <sys/select.h>	162	#include <sys/select.h>
		163	#include <sys/statvfs.h>
75	# include <unistd.h>	164	#include <unistd.h>
76	# include <utime.h>	165	#include <utime.h>
77	# include <signal.h>	166	#include <signal.h>
78	# include <dirent.h>	167	#include <dirent.h>
79		168
		169	#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
		170	#include <sys/mman.h>
		171	#endif
		172
		173	#define D_NAME(entp) entp->d_name
		174
		175	/* POSIX_SOURCE is useless on bsd's, and XOPEN_SOURCE is unreliable there, too */
		176	#if __FreeBSD__ || defined __NetBSD__ || defined __OpenBSD__
		177	#define _DIRENT_HAVE_D_TYPE /* sigh */
		178	#define D_INO(de) (de)->d_fileno
		179	#define D_NAMLEN(de) (de)->d_namlen
		180	#elif __linux || defined d_ino || _XOPEN_SOURCE >= 600
		181	#define D_INO(de) (de)->d_ino
		182	#endif
		183
		184	#ifdef _D_EXACT_NAMLEN
		185	#undef D_NAMLEN
		186	#define D_NAMLEN(de) _D_EXACT_NAMLEN (de)
		187	#endif
		188
		189	#ifdef _DIRENT_HAVE_D_TYPE
		190	#define D_TYPE(de) (de)->d_type
		191	#endif
		192
80	# ifndef EIO_STRUCT_DIRENT	193	#ifndef EIO_STRUCT_DIRENT
81	# define EIO_STRUCT_DIRENT struct dirent	194	#define EIO_STRUCT_DIRENT struct dirent
82	# endif	195	#endif
83		196
84	#endif	197	#endif
85		198
86	#if HAVE_SENDFILE	199	#if HAVE_SENDFILE
87	# if __linux	200	# if __linux
88	# include <sys/sendfile.h>	201	# include <sys/sendfile.h>
89	# elif __freebsd	202	# elif __FreeBSD__ || defined __APPLE__
90	# include <sys/socket.h>	203	# include <sys/socket.h>
91	# include <sys/uio.h>	204	# include <sys/uio.h>
92	# elif __hpux	205	# elif __hpux
93	# include <sys/socket.h>	206	# include <sys/socket.h>
94	# elif __solaris /* not yet */	207	# elif __solaris
95	# include <sys/sendfile.h>	208	# include <sys/sendfile.h>
96	# else	209	# else
97	# error sendfile support requested but not available	210	# error sendfile support requested but not available
98	# endif	211	# endif
99	#endif	212	#endif
100		213
101	/* number of seconds after which an idle threads exit */	214	#ifndef D_TYPE
102	#define IDLE_TIMEOUT 10	215	# define D_TYPE(de) 0
		216	#endif
		217	#ifndef D_INO
		218	# define D_INO(de) 0
		219	#endif
		220	#ifndef D_NAMLEN
		221	# define D_NAMLEN(entp) strlen (D_NAME (entp))
		222	#endif
103		223
104	/* used for struct dirent, AIX doesn't provide it */	224	/* used for struct dirent, AIX doesn't provide it */
105	#ifndef NAME_MAX	225	#ifndef NAME_MAX
106	# define NAME_MAX 4096	226	# define NAME_MAX 4096
		227	#endif
		228
		229	/* used for readlink etc. */
		230	#ifndef PATH_MAX
		231	# define PATH_MAX 4096
107	#endif	232	#endif
108		233
109	/* buffer size for various temporary buffers */	234	/* buffer size for various temporary buffers */
110	#define EIO_BUFSIZE 65536	235	#define EIO_BUFSIZE 65536
111		236
…		…
118	if (!eio_buf) \	243	if (!eio_buf) \
119	return -1;	244	return -1;
120		245
121	#define EIO_TICKS ((1000000 + 1023) >> 10)	246	#define EIO_TICKS ((1000000 + 1023) >> 10)
122		247
123	/*****************************************************************************/
124
125	#define ETP_PRI_MIN EIO_PRI_MIN	248	#define ETP_PRI_MIN EIO_PRI_MIN
126	#define ETP_PRI_MAX EIO_PRI_MAX	249	#define ETP_PRI_MAX EIO_PRI_MAX
127		250
128	struct etp_worker;	251	struct etp_worker;
129		252
…		…
137	#define ETP_WORKER_CLEAR(req) \	260	#define ETP_WORKER_CLEAR(req) \
138	if (wrk->dbuf) \	261	if (wrk->dbuf) \
139	{ \	262	{ \
140	free (wrk->dbuf); \	263	free (wrk->dbuf); \
141	wrk->dbuf = 0; \	264	wrk->dbuf = 0; \
142	} \
143	\
144	if (wrk->dirp) \
145	{ \
146	closedir (wrk->dirp); \
147	wrk->dirp = 0; \
148	}	265	}
		266
149	#define ETP_WORKER_COMMON \	267	#define ETP_WORKER_COMMON \
150	void *dbuf; \	268	void *dbuf;
151	DIR *dirp;
152		269
153	/*****************************************************************************/	270	/*****************************************************************************/
154		271
155	#define ETP_NUM_PRI (ETP_PRI_MAX - ETP_PRI_MIN + 1)	272	#define ETP_NUM_PRI (ETP_PRI_MAX - ETP_PRI_MIN + 1)
156		273
157	/* calculcate time difference in ~1/EIO_TICKS of a second */	274	/* calculate time difference in ~1/EIO_TICKS of a second */
		275	ecb_inline int
158	static int tvdiff (struct timeval *tv1, struct timeval *tv2)	276	tvdiff (struct timeval *tv1, struct timeval *tv2)
159	{	277	{
160	return (tv2->tv_sec - tv1->tv_sec ) * EIO_TICKS	278	return (tv2->tv_sec - tv1->tv_sec ) * EIO_TICKS
161	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);	279	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
162	}	280	}
163		281
…		…
170	static unsigned int max_poll_reqs; /* reslock */	288	static unsigned int max_poll_reqs; /* reslock */
171		289
172	static volatile unsigned int nreqs; /* reqlock */	290	static volatile unsigned int nreqs; /* reqlock */
173	static volatile unsigned int nready; /* reqlock */	291	static volatile unsigned int nready; /* reqlock */
174	static volatile unsigned int npending; /* reqlock */	292	static volatile unsigned int npending; /* reqlock */
175	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 */
176		295
		296	static xmutex_t wrklock;
		297	static xmutex_t reslock;
		298	static xmutex_t reqlock;
		299	static xcond_t reqwait;
		300
		301	#if !HAVE_PREADWRITE
		302	/*
		303	* make our pread/pwrite emulation safe against themselves, but not against
		304	* normal read/write by using a mutex. slows down execution a lot,
		305	* but that's your problem, not mine.
		306	*/
177	static mutex_t wrklock = X_MUTEX_INIT;	307	static xmutex_t preadwritelock = X_MUTEX_INIT;
178	static mutex_t reslock = X_MUTEX_INIT;	308	#endif
179	static mutex_t reqlock = X_MUTEX_INIT;
180	static cond_t reqwait = X_COND_INIT;
181		309
182	typedef struct etp_worker	310	typedef struct etp_worker
183	{	311	{
184	/* locked by wrklock */	312	/* locked by wrklock */
185	struct etp_worker *prev, *next;	313	struct etp_worker *prev, *next;
186		314
187	thread_t tid;	315	xthread_t tid;
188		316
189	/* locked by reslock, reqlock or wrklock */	317	/* locked by reslock, reqlock or wrklock */
190	ETP_REQ *req; /* currently processed request */	318	ETP_REQ *req; /* currently processed request */
191		319
192	ETP_WORKER_COMMON	320	ETP_WORKER_COMMON
…		…
197	#define ETP_WORKER_LOCK(wrk) X_LOCK (wrklock)	325	#define ETP_WORKER_LOCK(wrk) X_LOCK (wrklock)
198	#define ETP_WORKER_UNLOCK(wrk) X_UNLOCK (wrklock)	326	#define ETP_WORKER_UNLOCK(wrk) X_UNLOCK (wrklock)
199		327
200	/* worker threads management */	328	/* worker threads management */
201		329
		330	static void ecb_cold
202	static void etp_worker_clear (etp_worker *wrk)	331	etp_worker_clear (etp_worker *wrk)
203	{	332	{
204	ETP_WORKER_CLEAR (wrk);	333	ETP_WORKER_CLEAR (wrk);
205	}	334	}
206		335
		336	static void ecb_cold
207	static void etp_worker_free (etp_worker *wrk)	337	etp_worker_free (etp_worker *wrk)
208	{	338	{
209	wrk->next->prev = wrk->prev;	339	wrk->next->prev = wrk->prev;
210	wrk->prev->next = wrk->next;	340	wrk->prev->next = wrk->next;
211		341
212	free (wrk);	342	free (wrk);
213	}	343	}
214		344
215	static unsigned int etp_nreqs (void)	345	static unsigned int
		346	etp_nreqs (void)
216	{	347	{
217	int retval;	348	int retval;
218	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);	349	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
219	retval = nreqs;	350	retval = nreqs;
220	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);	351	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
221	return retval;	352	return retval;
222	}	353	}
223		354
224	static unsigned int etp_nready (void)	355	static unsigned int
		356	etp_nready (void)
225	{	357	{
226	unsigned int retval;	358	unsigned int retval;
227		359
228	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);	360	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
229	retval = nready;	361	retval = nready;
230	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);	362	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
231		363
232	return retval;	364	return retval;
233	}	365	}
234		366
235	static unsigned int etp_npending (void)	367	static unsigned int
		368	etp_npending (void)
236	{	369	{
237	unsigned int retval;	370	unsigned int retval;
238		371
239	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);	372	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
240	retval = npending;	373	retval = npending;
241	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);	374	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
242		375
243	return retval;	376	return retval;
244	}	377	}
245		378
246	static unsigned int etp_nthreads (void)	379	static unsigned int
		380	etp_nthreads (void)
247	{	381	{
248	unsigned int retval;	382	unsigned int retval;
249		383
250	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);	384	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
251	retval = started;	385	retval = started;
…		…
265	} etp_reqq;	399	} etp_reqq;
266		400
267	static etp_reqq req_queue;	401	static etp_reqq req_queue;
268	static etp_reqq res_queue;	402	static etp_reqq res_queue;
269		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
270	static int reqq_push (etp_reqq *q, ETP_REQ *req)	416	reqq_push (etp_reqq *q, ETP_REQ *req)
271	{	417	{
272	int pri = req->pri;	418	int pri = req->pri;
273	req->next = 0;	419	req->next = 0;
274		420
275	if (q->qe[pri])	421	if (q->qe[pri])
…		…
281	q->qe[pri] = q->qs[pri] = req;	427	q->qe[pri] = q->qs[pri] = req;
282		428
283	return q->size++;	429	return q->size++;
284	}	430	}
285		431
		432	static ETP_REQ * ecb_noinline
286	static ETP_REQ *reqq_shift (etp_reqq *q)	433	reqq_shift (etp_reqq *q)
287	{	434	{
288	int pri;	435	int pri;
289		436
290	if (!q->size)	437	if (!q->size)
291	return 0;	438	return 0;
…		…
306	}	453	}
307		454
308	abort ();	455	abort ();
309	}	456	}
310		457
311	static void etp_atfork_prepare (void)	458	static void ecb_cold
		459	etp_thread_init (void)
312	{	460	{
313	X_LOCK (wrklock);
314	X_LOCK (reqlock);
315	X_LOCK (reslock);
316	#if !HAVE_PREADWRITE	461	#if !HAVE_PREADWRITE
317	X_LOCK (preadwritelock);
318	#endif
319	}
320
321	static void etp_atfork_parent (void)
322	{
323	#if !HAVE_PREADWRITE
324	X_UNLOCK (preadwritelock);	462	X_MUTEX_CREATE (preadwritelock);
325	#endif	463	#endif
326	X_UNLOCK (reslock);	464	X_MUTEX_CREATE (wrklock);
327	X_UNLOCK (reqlock);	465	X_MUTEX_CREATE (reslock);
328	X_UNLOCK (wrklock);	466	X_MUTEX_CREATE (reqlock);
		467	X_COND_CREATE (reqwait);
329	}	468	}
330		469
		470	static void ecb_cold
331	static void etp_atfork_child (void)	471	etp_atfork_child (void)
332	{	472	{
333	ETP_REQ *prv;	473	reqq_init (&req_queue);
		474	reqq_init (&res_queue);
334		475
335	while (prv = reqq_shift (&req_queue))	476	wrk_first.next =
336	ETP_DESTROY (prv);	477	wrk_first.prev = &wrk_first;
337
338	while (prv = reqq_shift (&res_queue))
339	ETP_DESTROY (prv);
340
341	while (wrk_first.next != &wrk_first)
342	{
343	etp_worker *wrk = wrk_first.next;
344
345	if (wrk->req)
346	ETP_DESTROY (wrk->req);
347
348	etp_worker_clear (wrk);
349	etp_worker_free (wrk);
350	}
351		478
352	started = 0;	479	started = 0;
353	idle = 0;	480	idle = 0;
354	nreqs = 0;	481	nreqs = 0;
355	nready = 0;	482	nready = 0;
356	npending = 0;	483	npending = 0;
357		484
358	etp_atfork_parent ();	485	etp_thread_init ();
359	}	486	}
360		487
361	static void	488	static void ecb_cold
362	etp_once_init (void)	489	etp_once_init (void)
363	{	490	{
364	X_THREAD_ATFORK (etp_atfork_prepare, etp_atfork_parent, etp_atfork_child);	491	etp_thread_init ();
		492	X_THREAD_ATFORK (0, 0, etp_atfork_child);
365	}	493	}
366		494
367	static int	495	static int ecb_cold
368	etp_init (void (*want_poll)(void), void (*done_poll)(void))	496	etp_init (void (*want_poll)(void), void (*done_poll)(void))
369	{	497	{
370	static pthread_once_t doinit = PTHREAD_ONCE_INIT;	498	static pthread_once_t doinit = PTHREAD_ONCE_INIT;
371		499
372	pthread_once (&doinit, etp_once_init);	500	pthread_once (&doinit, etp_once_init);
…		…
377	return 0;	505	return 0;
378	}	506	}
379		507
380	X_THREAD_PROC (etp_proc);	508	X_THREAD_PROC (etp_proc);
381		509
		510	static void ecb_cold
382	static void etp_start_thread (void)	511	etp_start_thread (void)
383	{	512	{
384	etp_worker *wrk = calloc (1, sizeof (etp_worker));	513	etp_worker *wrk = calloc (1, sizeof (etp_worker));
385		514
386	/*TODO*/	515	/*TODO*/
387	assert (("unable to allocate worker thread data", wrk));	516	assert (("unable to allocate worker thread data", wrk));
…		…
400	free (wrk);	529	free (wrk);
401		530
402	X_UNLOCK (wrklock);	531	X_UNLOCK (wrklock);
403	}	532	}
404		533
		534	static void
405	static void etp_maybe_start_thread (void)	535	etp_maybe_start_thread (void)
406	{	536	{
407	if (etp_nthreads () >= wanted)	537	if (ecb_expect_true (etp_nthreads () >= wanted))
408	return;	538	return;
409		539
410	/* todo: maybe use idle here, but might be less exact */	540	/* todo: maybe use idle here, but might be less exact */
411	if (0 <= (int)etp_nthreads () + (int)etp_npending () - (int)etp_nreqs ())	541	if (ecb_expect_true (0 <= (int)etp_nthreads () + (int)etp_npending () - (int)etp_nreqs ()))
412	return;	542	return;
413		543
414	etp_start_thread ();	544	etp_start_thread ();
415	}	545	}
416		546
		547	static void ecb_cold
417	static void etp_end_thread (void)	548	etp_end_thread (void)
418	{	549	{
419	eio_req *req = calloc (1, sizeof (eio_req));	550	eio_req *req = calloc (1, sizeof (eio_req));
420		551
421	req->type = -1;	552	req->type = -1;
422	req->pri = ETP_PRI_MAX - ETP_PRI_MIN;	553	req->pri = ETP_PRI_MAX - ETP_PRI_MIN;
…		…
429	X_LOCK (wrklock);	560	X_LOCK (wrklock);
430	--started;	561	--started;
431	X_UNLOCK (wrklock);	562	X_UNLOCK (wrklock);
432	}	563	}
433		564
434	static int etp_poll (void)	565	static int
		566	etp_poll (void)
435	{	567	{
436	unsigned int maxreqs;	568	unsigned int maxreqs;
437	unsigned int maxtime;	569	unsigned int maxtime;
438	struct timeval tv_start, tv_now;	570	struct timeval tv_start, tv_now;
439		571
…		…
469		601
470	X_LOCK (reqlock);	602	X_LOCK (reqlock);
471	--nreqs;	603	--nreqs;
472	X_UNLOCK (reqlock);	604	X_UNLOCK (reqlock);
473		605
474	if (req->type == EIO_GROUP && req->size)	606	if (ecb_expect_false (req->type == EIO_GROUP && req->size))
475	{	607	{
476	req->int1 = 1; /* mark request as delayed */	608	req->int1 = 1; /* mark request as delayed */
477	continue;	609	continue;
478	}	610	}
479	else	611	else
480	{	612	{
481	int res = ETP_FINISH (req);	613	int res = ETP_FINISH (req);
482	if (res)	614	if (ecb_expect_false (res))
483	return res;	615	return res;
484	}	616	}
485		617
486	if (maxreqs && !--maxreqs)	618	if (ecb_expect_false (maxreqs && !--maxreqs))
487	break;	619	break;
488		620
489	if (maxtime)	621	if (maxtime)
490	{	622	{
491	gettimeofday (&tv_now, 0);	623	gettimeofday (&tv_now, 0);
…		…
497		629
498	errno = EAGAIN;	630	errno = EAGAIN;
499	return -1;	631	return -1;
500	}	632	}
501		633
		634	static void
502	static void etp_cancel (ETP_REQ *req)	635	etp_cancel (ETP_REQ *req)
503	{	636	{
504	X_LOCK (wrklock);	637	req->cancelled = 1;
505	req->flags |= EIO_FLAG_CANCELLED;
506	X_UNLOCK (wrklock);
507		638
508	eio_grp_cancel (req);	639	eio_grp_cancel (req);
509	}	640	}
510		641
		642	static void
511	static void etp_submit (ETP_REQ *req)	643	etp_submit (ETP_REQ *req)
512	{	644	{
513	req->pri -= ETP_PRI_MIN;	645	req->pri -= ETP_PRI_MIN;
514		646
515	if (req->pri < ETP_PRI_MIN - ETP_PRI_MIN) req->pri = ETP_PRI_MIN - ETP_PRI_MIN;	647	if (ecb_expect_false (req->pri < ETP_PRI_MIN - ETP_PRI_MIN)) req->pri = ETP_PRI_MIN - ETP_PRI_MIN;
516	if (req->pri > ETP_PRI_MAX - ETP_PRI_MIN) req->pri = ETP_PRI_MAX - ETP_PRI_MIN;	648	if (ecb_expect_false (req->pri > ETP_PRI_MAX - ETP_PRI_MIN)) req->pri = ETP_PRI_MAX - ETP_PRI_MIN;
517		649
		650	if (ecb_expect_false (req->type == EIO_GROUP))
		651	{
		652	/* I hope this is worth it :/ */
518	X_LOCK (reqlock);	653	X_LOCK (reqlock);
519	++nreqs;	654	++nreqs;
		655	X_UNLOCK (reqlock);
		656
		657	X_LOCK (reslock);
		658
		659	++npending;
		660
		661	if (!reqq_push (&res_queue, req) && want_poll_cb)
		662	want_poll_cb ();
		663
		664	X_UNLOCK (reslock);
		665	}
		666	else
		667	{
		668	X_LOCK (reqlock);
		669	++nreqs;
520	++nready;	670	++nready;
521	reqq_push (&req_queue, req);	671	reqq_push (&req_queue, req);
522	X_COND_SIGNAL (reqwait);	672	X_COND_SIGNAL (reqwait);
523	X_UNLOCK (reqlock);	673	X_UNLOCK (reqlock);
524		674
525	etp_maybe_start_thread ();	675	etp_maybe_start_thread ();
		676	}
526	}	677	}
527		678
		679	static void ecb_cold
528	static void etp_set_max_poll_time (double nseconds)	680	etp_set_max_poll_time (double nseconds)
529	{	681	{
530	if (WORDACCESS_UNSAFE) X_LOCK (reslock);	682	if (WORDACCESS_UNSAFE) X_LOCK (reslock);
531	max_poll_time = nseconds;	683	max_poll_time = nseconds * EIO_TICKS;
532	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);	684	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);
533	}	685	}
534		686
		687	static void ecb_cold
535	static void etp_set_max_poll_reqs (unsigned int maxreqs)	688	etp_set_max_poll_reqs (unsigned int maxreqs)
536	{	689	{
537	if (WORDACCESS_UNSAFE) X_LOCK (reslock);	690	if (WORDACCESS_UNSAFE) X_LOCK (reslock);
538	max_poll_reqs = maxreqs;	691	max_poll_reqs = maxreqs;
539	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);	692	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);
540	}	693	}
541		694
		695	static void ecb_cold
542	static void etp_set_max_idle (unsigned int nthreads)	696	etp_set_max_idle (unsigned int nthreads)
543	{	697	{
544	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);	698	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
545	max_idle = nthreads <= 0 ? 1 : nthreads;	699	max_idle = nthreads;
546	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);	700	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
547	}	701	}
548		702
		703	static void ecb_cold
		704	etp_set_idle_timeout (unsigned int seconds)
		705	{
		706	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
		707	idle_timeout = seconds;
		708	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
		709	}
		710
		711	static void ecb_cold
549	static void etp_set_min_parallel (unsigned int nthreads)	712	etp_set_min_parallel (unsigned int nthreads)
550	{	713	{
551	if (wanted < nthreads)	714	if (wanted < nthreads)
552	wanted = nthreads;	715	wanted = nthreads;
553	}	716	}
554		717
		718	static void ecb_cold
555	static void etp_set_max_parallel (unsigned int nthreads)	719	etp_set_max_parallel (unsigned int nthreads)
556	{	720	{
557	if (wanted > nthreads)	721	if (wanted > nthreads)
558	wanted = nthreads;	722	wanted = nthreads;
559		723
560	while (started > wanted)	724	while (started > wanted)
561	etp_end_thread ();	725	etp_end_thread ();
562	}	726	}
563		727
564	/*****************************************************************************/	728	/*****************************************************************************/
565		729
		730	static void
566	static void grp_try_feed (eio_req *grp)	731	grp_try_feed (eio_req *grp)
567	{	732	{
568	while (grp->size < grp->int2 && !EIO_CANCELLED (grp))	733	while (grp->size < grp->int2 && !EIO_CANCELLED (grp))
569	{	734	{
570	int old_len = grp->size;	735	grp->flags &= ~EIO_FLAG_GROUPADD;
571		736
572	EIO_FEED (grp);	737	EIO_FEED (grp);
573		738
574	/* stop if no progress has been made */	739	/* stop if no progress has been made */
575	if (old_len == grp->size)	740	if (!(grp->flags & EIO_FLAG_GROUPADD))
576	{	741	{
577	grp->feed = 0;	742	grp->feed = 0;
578	break;	743	break;
579	}	744	}
580	}	745	}
581	}	746	}
582		747
		748	static int
583	static int grp_dec (eio_req *grp)	749	grp_dec (eio_req *grp)
584	{	750	{
585	--grp->size;	751	--grp->size;
586		752
587	/* call feeder, if applicable */	753	/* call feeder, if applicable */
588	grp_try_feed (grp);	754	grp_try_feed (grp);
…		…
592	return eio_finish (grp);	758	return eio_finish (grp);
593	else	759	else
594	return 0;	760	return 0;
595	}	761	}
596		762
		763	static void
597	void eio_destroy (eio_req *req)	764	eio_destroy (eio_req *req)
598	{	765	{
599	if ((req)->flags & EIO_FLAG_PTR1_FREE) free (req->ptr1);	766	if ((req)->flags & EIO_FLAG_PTR1_FREE) free (req->ptr1);
600	if ((req)->flags & EIO_FLAG_PTR2_FREE) free (req->ptr2);	767	if ((req)->flags & EIO_FLAG_PTR2_FREE) free (req->ptr2);
601		768
602	EIO_DESTROY (req);	769	EIO_DESTROY (req);
603	}	770	}
604		771
		772	static int
605	static int eio_finish (eio_req *req)	773	eio_finish (eio_req *req)
606	{	774	{
607	int res = EIO_FINISH (req);	775	int res = EIO_FINISH (req);
608		776
609	if (req->grp)	777	if (req->grp)
610	{	778	{
…		…
618	if (grp->grp_first == req)	786	if (grp->grp_first == req)
619	grp->grp_first = req->grp_next;	787	grp->grp_first = req->grp_next;
620		788
621	res2 = grp_dec (grp);	789	res2 = grp_dec (grp);
622		790
623	if (!res && res2)	791	if (!res)
624	res = res2;	792	res = res2;
625	}	793	}
626		794
627	eio_destroy (req);	795	eio_destroy (req);
628		796
629	return res;	797	return res;
630	}	798	}
631		799
		800	void
632	void eio_grp_cancel (eio_req *grp)	801	eio_grp_cancel (eio_req *grp)
633	{	802	{
634	for (grp = grp->grp_first; grp; grp = grp->grp_next)	803	for (grp = grp->grp_first; grp; grp = grp->grp_next)
635	eio_cancel (grp);	804	eio_cancel (grp);
636	}	805	}
637		806
		807	void
638	void eio_cancel (eio_req *req)	808	eio_cancel (eio_req *req)
639	{	809	{
640	etp_cancel (req);	810	etp_cancel (req);
641	}	811	}
642		812
		813	void
643	void eio_submit (eio_req *req)	814	eio_submit (eio_req *req)
644	{	815	{
645	etp_submit (req);	816	etp_submit (req);
646	}	817	}
647		818
648	unsigned int eio_nreqs (void)	819	unsigned int
		820	eio_nreqs (void)
649	{	821	{
650	return etp_nreqs ();	822	return etp_nreqs ();
651	}	823	}
652		824
653	unsigned int eio_nready (void)	825	unsigned int
		826	eio_nready (void)
654	{	827	{
655	return etp_nready ();	828	return etp_nready ();
656	}	829	}
657		830
658	unsigned int eio_npending (void)	831	unsigned int
		832	eio_npending (void)
659	{	833	{
660	return etp_npending ();	834	return etp_npending ();
661	}	835	}
662		836
663	unsigned int eio_nthreads (void)	837	unsigned int ecb_cold
		838	eio_nthreads (void)
664	{	839	{
665	return etp_nthreads ();	840	return etp_nthreads ();
666	}	841	}
667		842
		843	void ecb_cold
668	void eio_set_max_poll_time (double nseconds)	844	eio_set_max_poll_time (double nseconds)
669	{	845	{
670	etp_set_max_poll_time (nseconds);	846	etp_set_max_poll_time (nseconds);
671	}	847	}
672		848
		849	void ecb_cold
673	void eio_set_max_poll_reqs (unsigned int maxreqs)	850	eio_set_max_poll_reqs (unsigned int maxreqs)
674	{	851	{
675	etp_set_max_poll_reqs (maxreqs);	852	etp_set_max_poll_reqs (maxreqs);
676	}	853	}
677		854
		855	void ecb_cold
678	void eio_set_max_idle (unsigned int nthreads)	856	eio_set_max_idle (unsigned int nthreads)
679	{	857	{
680	etp_set_max_idle (nthreads);	858	etp_set_max_idle (nthreads);
681	}	859	}
682		860
		861	void ecb_cold
		862	eio_set_idle_timeout (unsigned int seconds)
		863	{
		864	etp_set_idle_timeout (seconds);
		865	}
		866
		867	void ecb_cold
683	void eio_set_min_parallel (unsigned int nthreads)	868	eio_set_min_parallel (unsigned int nthreads)
684	{	869	{
685	etp_set_min_parallel (nthreads);	870	etp_set_min_parallel (nthreads);
686	}	871	}
687		872
		873	void ecb_cold
688	void eio_set_max_parallel (unsigned int nthreads)	874	eio_set_max_parallel (unsigned int nthreads)
689	{	875	{
690	etp_set_max_parallel (nthreads);	876	etp_set_max_parallel (nthreads);
691	}	877	}
692		878
693	int eio_poll (void)	879	int eio_poll (void)
…		…
697		883
698	/*****************************************************************************/	884	/*****************************************************************************/
699	/* work around various missing functions */	885	/* work around various missing functions */
700		886
701	#if !HAVE_PREADWRITE	887	#if !HAVE_PREADWRITE
		888	# undef pread
		889	# undef pwrite
702	# define pread eio__pread	890	# define pread eio__pread
703	# define pwrite eio__pwrite	891	# define pwrite eio__pwrite
704		892
705	/*
706	* make our pread/pwrite safe against themselves, but not against
707	* normal read/write by using a mutex. slows down execution a lot,
708	* but that's your problem, not mine.
709	*/
710	static mutex_t preadwritelock = X_MUTEX_INIT;
711
712	static ssize_t	893	static eio_ssize_t
713	eio__pread (int fd, void *buf, size_t count, off_t offset)	894	eio__pread (int fd, void *buf, size_t count, off_t offset)
714	{	895	{
715	ssize_t res;	896	eio_ssize_t res;
716	off_t ooffset;	897	off_t ooffset;
717		898
718	X_LOCK (preadwritelock);	899	X_LOCK (preadwritelock);
719	ooffset = lseek (fd, 0, SEEK_CUR);	900	ooffset = lseek (fd, 0, SEEK_CUR);
720	lseek (fd, offset, SEEK_SET);	901	lseek (fd, offset, SEEK_SET);
…		…
723	X_UNLOCK (preadwritelock);	904	X_UNLOCK (preadwritelock);
724		905
725	return res;	906	return res;
726	}	907	}
727		908
728	static ssize_t	909	static eio_ssize_t
729	eio__pwrite (int fd, void *buf, size_t count, off_t offset)	910	eio__pwrite (int fd, void *buf, size_t count, off_t offset)
730	{	911	{
731	ssize_t res;	912	eio_ssize_t res;
732	off_t ooffset;	913	off_t ooffset;
733		914
734	X_LOCK (preadwritelock);	915	X_LOCK (preadwritelock);
735	ooffset = lseek (fd, 0, SEEK_CUR);	916	ooffset = lseek (fd, 0, SEEK_CUR);
736	lseek (fd, offset, SEEK_SET);	917	lseek (fd, offset, SEEK_SET);
737	res = write (fd, buf, count);	918	res = write (fd, buf, count);
738	lseek (fd, offset, SEEK_SET);	919	lseek (fd, ooffset, SEEK_SET);
739	X_UNLOCK (preadwritelock);	920	X_UNLOCK (preadwritelock);
740		921
741	return res;	922	return res;
742	}	923	}
743	#endif	924	#endif
744		925
745	#ifndef HAVE_FUTIMES	926	#ifndef HAVE_UTIMES
746		927
		928	# undef utimes
747	# define utimes(path,times) eio__utimes (path, times)	929	# define utimes(path,times) eio__utimes (path, times)
748	# define futimes(fd,times) eio__futimes (fd, times)
749		930
750	static int	931	static int
751	eio__utimes (const char *filename, const struct timeval times[2])	932	eio__utimes (const char *filename, const struct timeval times[2])
752	{	933	{
753	if (times)	934	if (times)
…		…
761	}	942	}
762	else	943	else
763	return utime (filename, 0);	944	return utime (filename, 0);
764	}	945	}
765		946
		947	#endif
		948
		949	#ifndef HAVE_FUTIMES
		950
		951	# undef futimes
		952	# define futimes(fd,times) eio__futimes (fd, times)
		953
		954	static int
766	static int eio__futimes (int fd, const struct timeval tv[2])	955	eio__futimes (int fd, const struct timeval tv[2])
767	{	956	{
768	errno = ENOSYS;	957	errno = ENOSYS;
769	return -1;	958	return -1;
770	}	959	}
771		960
772	#endif	961	#endif
773		962
774	#if !HAVE_FDATASYNC	963	#if !HAVE_FDATASYNC
		964	# undef fdatasync
775	# define fdatasync fsync	965	# define fdatasync(fd) fsync (fd)
776	#endif	966	#endif
		967
		968	/* sync_file_range always needs emulation */
		969	static int
		970	eio__sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags)
		971	{
		972	#if HAVE_SYNC_FILE_RANGE
		973	int res;
		974
		975	if (EIO_SYNC_FILE_RANGE_WAIT_BEFORE != SYNC_FILE_RANGE_WAIT_BEFORE
		976	|| EIO_SYNC_FILE_RANGE_WRITE != SYNC_FILE_RANGE_WRITE
		977	|| EIO_SYNC_FILE_RANGE_WAIT_AFTER != SYNC_FILE_RANGE_WAIT_AFTER)
		978	{
		979	flags = 0
		980	| (flags & EIO_SYNC_FILE_RANGE_WAIT_BEFORE ? SYNC_FILE_RANGE_WAIT_BEFORE : 0)
		981	| (flags & EIO_SYNC_FILE_RANGE_WRITE ? SYNC_FILE_RANGE_WRITE : 0)
		982	| (flags & EIO_SYNC_FILE_RANGE_WAIT_AFTER ? SYNC_FILE_RANGE_WAIT_AFTER : 0);
		983	}
		984
		985	res = sync_file_range (fd, offset, nbytes, flags);
		986
		987	if (!res || errno != ENOSYS)
		988	return res;
		989	#endif
		990
		991	/* even though we could play tricks with the flags, it's better to always
		992	* call fdatasync, as that matches the expectation of its users best */
		993	return fdatasync (fd);
		994	}
		995
		996	static int
		997	eio__fallocate (int fd, int mode, off_t offset, size_t len)
		998	{
		999	#if HAVE_FALLOCATE
		1000	return fallocate (fd, mode, offset, len);
		1001	#else
		1002	errno = ENOSYS;
		1003	return -1;
		1004	#endif
		1005	}
777		1006
778	#if !HAVE_READAHEAD	1007	#if !HAVE_READAHEAD
		1008	# undef readahead
779	# define readahead(fd,offset,count) eio__readahead (fd, offset, count, self)	1009	# define readahead(fd,offset,count) eio__readahead (fd, offset, count, self)
780		1010
781	static ssize_t	1011	static eio_ssize_t
782	eio__readahead (int fd, off_t offset, size_t count, etp_worker *self)	1012	eio__readahead (int fd, off_t offset, size_t count, etp_worker *self)
783	{	1013	{
784	size_t todo = count;	1014	size_t todo = count;
785	dBUF;	1015	dBUF;
786		1016
…		…
798	}	1028	}
799		1029
800	#endif	1030	#endif
801		1031
802	/* sendfile always needs emulation */	1032	/* sendfile always needs emulation */
803	static ssize_t	1033	static eio_ssize_t
804	eio__sendfile (int ofd, int ifd, off_t offset, size_t count, etp_worker *self)	1034	eio__sendfile (int ofd, int ifd, off_t offset, size_t count, etp_worker *self)
805	{	1035	{
		1036	eio_ssize_t written = 0;
806	ssize_t res;	1037	eio_ssize_t res;
807		1038
808	if (!count)	1039	if (!count)
809	return 0;	1040	return 0;
810		1041
		1042	for (;;)
		1043	{
		1044	#ifdef __APPLE__
		1045	# undef HAVE_SENDFILE /* broken, as everything on os x */
		1046	#endif
811	#if HAVE_SENDFILE	1047	#if HAVE_SENDFILE
812	# if __linux	1048	# if __linux
		1049	off_t soffset = offset;
813	res = sendfile (ofd, ifd, &offset, count);	1050	res = sendfile (ofd, ifd, &soffset, count);
814		1051
815	# elif __freebsd	1052	# elif __FreeBSD__
816	/*	1053	/*
817	* Of course, the freebsd sendfile is a dire hack with no thoughts	1054	* Of course, the freebsd sendfile is a dire hack with no thoughts
818	* wasted on making it similar to other I/O functions.	1055	* wasted on making it similar to other I/O functions.
819	*/	1056	*/
820	{
821	off_t sbytes;	1057	off_t sbytes;
822	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);	1058	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
823		1059
824	if (res < 0 && sbytes)	1060	#if 0 /* according to the manpage, this is correct, but broken behaviour */
825	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */	1061	/* freebsd' sendfile will return 0 on success */
		1062	/* freebsd 8 documents it as only setting *sbytes on EINTR and EAGAIN, but */
		1063	/* not on e.g. EIO or EPIPE - sounds broken */
		1064	if ((res < 0 && (errno == EAGAIN || errno == EINTR) && sbytes) || res == 0)
826	res = sbytes;	1065	res = sbytes;
827	}	1066	#endif
		1067
		1068	/* according to source inspection, this is correct, and useful behaviour */
		1069	if (sbytes)
		1070	res = sbytes;
		1071
		1072	# elif defined (__APPLE__)
		1073	off_t sbytes = count;
		1074	res = sendfile (ifd, ofd, offset, &sbytes, 0, 0);
		1075
		1076	/* according to the manpage, sbytes is always valid */
		1077	if (sbytes)
		1078	res = sbytes;
828		1079
829	# elif __hpux	1080	# elif __hpux
830	res = sendfile (ofd, ifd, offset, count, 0, 0);	1081	res = sendfile (ofd, ifd, offset, count, 0, 0);
831		1082
832	# elif __solaris	1083	# elif __solaris
833	{
834	struct sendfilevec vec;	1084	struct sendfilevec vec;
835	size_t sbytes;	1085	size_t sbytes;
836		1086
837	vec.sfv_fd = ifd;	1087	vec.sfv_fd = ifd;
838	vec.sfv_flag = 0;	1088	vec.sfv_flag = 0;
839	vec.sfv_off = offset;	1089	vec.sfv_off = offset;
840	vec.sfv_len = count;	1090	vec.sfv_len = count;
841		1091
842	res = sendfilev (ofd, &vec, 1, &sbytes);	1092	res = sendfilev (ofd, &vec, 1, &sbytes);
843		1093
844	if (res < 0 && sbytes)	1094	if (res < 0 && sbytes)
845	res = sbytes;	1095	res = sbytes;
846	}
847		1096
848	# endif	1097	# endif
		1098
		1099	#elif defined (_WIN32) && 0
		1100	/* does not work, just for documentation of what would need to be done */
		1101	/* actually, cannot be done like this, as TransmitFile changes the file offset, */
		1102	/* libeio guarantees that the file offset does not change, and windows */
		1103	/* has no way to get an independent handle to the same file description */
		1104	HANDLE h = TO_SOCKET (ifd);
		1105	SetFilePointer (h, offset, 0, FILE_BEGIN);
		1106	res = TransmitFile (TO_SOCKET (ofd), h, count, 0, 0, 0, 0);
		1107
849	#else	1108	#else
850	res = -1;	1109	res = -1;
851	errno = ENOSYS;	1110	errno = ENOSYS;
852	#endif	1111	#endif
853		1112
		1113	/* we assume sendfile can copy at least 128mb in one go */
		1114	if (res <= 128 * 1024 * 1024)
		1115	{
		1116	if (res > 0)
		1117	written += res;
		1118
		1119	if (written)
		1120	return written;
		1121
		1122	break;
		1123	}
		1124	else
		1125	{
		1126	/* if we requested more, then probably the kernel was lazy */
		1127	written += res;
		1128	offset += res;
		1129	count -= res;
		1130
		1131	if (!count)
		1132	return written;
		1133	}
		1134	}
		1135
854	if (res < 0	1136	if (res < 0
855	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK	1137	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
		1138	/* BSDs */
		1139	#ifdef ENOTSUP /* sigh, if the steenking pile called openbsd would only try to at least compile posix code... */
		1140	|| errno == ENOTSUP
		1141	#endif
		1142	#ifdef EOPNOTSUPP /* windows */
		1143	|| errno == EOPNOTSUPP /* BSDs */
		1144	#endif
856	#if __solaris	1145	#if __solaris
857	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE	1146	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
858	#endif	1147	#endif
859	)	1148	)
860	)	1149	)
…		…
864		1153
865	res = 0;	1154	res = 0;
866		1155
867	while (count)	1156	while (count)
868	{	1157	{
869	ssize_t cnt;	1158	eio_ssize_t cnt;
870		1159
871	cnt = pread (ifd, eio_buf, count > EIO_BUFSIZE ? EIO_BUFSIZE : count, offset);	1160	cnt = pread (ifd, eio_buf, count > EIO_BUFSIZE ? EIO_BUFSIZE : count, offset);
872		1161
873	if (cnt <= 0)	1162	if (cnt <= 0)
874	{	1163	{
…		…
891	}	1180	}
892		1181
893	return res;	1182	return res;
894	}	1183	}
895		1184
		1185	#ifdef PAGESIZE
		1186	# define eio_pagesize() PAGESIZE
		1187	#else
		1188	static intptr_t
		1189	eio_pagesize (void)
		1190	{
		1191	static intptr_t page;
		1192
		1193	if (!page)
		1194	page = sysconf (_SC_PAGESIZE);
		1195
		1196	return page;
		1197	}
		1198	#endif
		1199
		1200	static void
		1201	eio_page_align (void **addr, size_t *length)
		1202	{
		1203	intptr_t mask = eio_pagesize () - 1;
		1204
		1205	/* round down addr */
		1206	intptr_t adj = mask & (intptr_t)*addr;
		1207
		1208	*addr = (void *)((intptr_t)*addr - adj);
		1209	*length += adj;
		1210
		1211	/* round up length */
		1212	*length = (*length + mask) & ~mask;
		1213	}
		1214
		1215	#if !_POSIX_MEMLOCK
		1216	# define eio__mlockall(a) EIO_ENOSYS ()
		1217	#else
		1218
		1219	static int
		1220	eio__mlockall (int flags)
		1221	{
		1222	#if __GLIBC__ == 2 && __GLIBC_MINOR__ <= 7
		1223	extern int mallopt (int, int);
		1224	mallopt (-6, 238); /* http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=473812 */
		1225	#endif
		1226
		1227	if (EIO_MCL_CURRENT != MCL_CURRENT
		1228	|| EIO_MCL_FUTURE != MCL_FUTURE)
		1229	{
		1230	flags = 0
		1231	| (flags & EIO_MCL_CURRENT ? MCL_CURRENT : 0)
		1232	| (flags & EIO_MCL_FUTURE ? MCL_FUTURE : 0);
		1233	}
		1234
		1235	return mlockall (flags);
		1236	}
		1237	#endif
		1238
		1239	#if !_POSIX_MEMLOCK_RANGE
		1240	# define eio__mlock(a,b) EIO_ENOSYS ()
		1241	#else
		1242
		1243	static int
		1244	eio__mlock (void *addr, size_t length)
		1245	{
		1246	eio_page_align (&addr, &length);
		1247
		1248	return mlock (addr, length);
		1249	}
		1250
		1251	#endif
		1252
		1253	#if !(_POSIX_MAPPED_FILES && _POSIX_SYNCHRONIZED_IO)
		1254	# define eio__msync(a,b,c) EIO_ENOSYS ()
		1255	#else
		1256
		1257	static int
		1258	eio__msync (void *mem, size_t len, int flags)
		1259	{
		1260	eio_page_align (&mem, &len);
		1261
		1262	if (EIO_MS_ASYNC != MS_SYNC
		1263	|| EIO_MS_INVALIDATE != MS_INVALIDATE
		1264	|| EIO_MS_SYNC != MS_SYNC)
		1265	{
		1266	flags = 0
		1267	| (flags & EIO_MS_ASYNC ? MS_ASYNC : 0)
		1268	| (flags & EIO_MS_INVALIDATE ? MS_INVALIDATE : 0)
		1269	| (flags & EIO_MS_SYNC ? MS_SYNC : 0);
		1270	}
		1271
		1272	return msync (mem, len, flags);
		1273	}
		1274
		1275	#endif
		1276
		1277	static int
		1278	eio__mtouch (eio_req *req)
		1279	{
		1280	void *mem = req->ptr2;
		1281	size_t len = req->size;
		1282	int flags = req->int1;
		1283
		1284	eio_page_align (&mem, &len);
		1285
		1286	{
		1287	intptr_t addr = (intptr_t)mem;
		1288	intptr_t end = addr + len;
		1289	intptr_t page = eio_pagesize ();
		1290
		1291	if (addr < end)
		1292	if (flags & EIO_MT_MODIFY) /* modify */
		1293	do { *((volatile sig_atomic_t *)addr) |= 0; } while ((addr += page) < len && !EIO_CANCELLED (req));
		1294	else
		1295	do { *((volatile sig_atomic_t *)addr) ; } while ((addr += page) < len && !EIO_CANCELLED (req));
		1296	}
		1297
		1298	return 0;
		1299	}
		1300
		1301	/*****************************************************************************/
		1302	/* requests implemented outside eio_execute, because they are so large */
		1303
		1304	static void
		1305	eio__realpath (eio_req *req, etp_worker *self)
		1306	{
		1307	char *rel = req->ptr1;
		1308	char *res;
		1309	char *tmp1, *tmp2;
		1310	#if SYMLOOP_MAX > 32
		1311	int symlinks = SYMLOOP_MAX;
		1312	#else
		1313	int symlinks = 32;
		1314	#endif
		1315
		1316	req->result = -1;
		1317
		1318	errno = EINVAL;
		1319	if (!rel)
		1320	return;
		1321
		1322	errno = ENOENT;
		1323	if (!*rel)
		1324	return;
		1325
		1326	if (!req->ptr2)
		1327	{
		1328	X_LOCK (wrklock);
		1329	req->flags |= EIO_FLAG_PTR2_FREE;
		1330	X_UNLOCK (wrklock);
		1331	req->ptr2 = malloc (PATH_MAX * 3);
		1332
		1333	errno = ENOMEM;
		1334	if (!req->ptr2)
		1335	return;
		1336	}
		1337
		1338	res = req->ptr2;
		1339	tmp1 = res + PATH_MAX;
		1340	tmp2 = tmp1 + PATH_MAX;
		1341
		1342	#if 0 /* disabled, the musl way to do things is just too racy */
		1343	#if __linux && defined(O_NONBLOCK) && defined(O_NOATIME)
		1344	/* on linux we may be able to ask the kernel */
		1345	{
		1346	int fd = open (rel, O_RDONLY | O_NONBLOCK | O_NOCTTY | O_NOATIME);
		1347
		1348	if (fd >= 0)
		1349	{
		1350	sprintf (tmp1, "/proc/self/fd/%d", fd);
		1351	req->result = readlink (tmp1, res, PATH_MAX);
		1352	close (fd);
		1353
		1354	/* here we should probably stat the open file and the disk file, to make sure they still match */
		1355
		1356	if (req->result > 0)
		1357	goto done;
		1358	}
		1359	else if (errno == ELOOP || errno == ENAMETOOLONG || errno == ENOENT || errno == ENOTDIR || errno == EIO)
		1360	return;
		1361	}
		1362	#endif
		1363	#endif
		1364
		1365	if (*rel != '/')
		1366	{
		1367	if (!getcwd (res, PATH_MAX))
		1368	return;
		1369
		1370	if (res [1]) /* only use if not / */
		1371	res += strlen (res);
		1372	}
		1373
		1374	while (*rel)
		1375	{
		1376	eio_ssize_t len, linklen;
		1377	char *beg = rel;
		1378
		1379	while (*rel && *rel != '/')
		1380	++rel;
		1381
		1382	len = rel - beg;
		1383
		1384	if (!len) /* skip slashes */
		1385	{
		1386	++rel;
		1387	continue;
		1388	}
		1389
		1390	if (beg [0] == '.')
		1391	{
		1392	if (len == 1)
		1393	continue; /* . - nop */
		1394
		1395	if (beg [1] == '.' && len == 2)
		1396	{
		1397	/* .. - back up one component, if possible */
		1398
		1399	while (res != req->ptr2)
		1400	if (*--res == '/')
		1401	break;
		1402
		1403	continue;
		1404	}
		1405	}
		1406
		1407	errno = ENAMETOOLONG;
		1408	if (res + 1 + len + 1 >= tmp1)
		1409	return;
		1410
		1411	/* copy one component */
		1412	*res = '/';
		1413	memcpy (res + 1, beg, len);
		1414
		1415	/* zero-terminate, for readlink */
		1416	res [len + 1] = 0;
		1417
		1418	/* now check if it's a symlink */
		1419	linklen = readlink (req->ptr2, tmp1, PATH_MAX);
		1420
		1421	if (linklen < 0)
		1422	{
		1423	if (errno != EINVAL)
		1424	return;
		1425
		1426	/* it's a normal directory. hopefully */
		1427	res += len + 1;
		1428	}
		1429	else
		1430	{
		1431	/* yay, it was a symlink - build new path in tmp2 */
		1432	int rellen = strlen (rel);
		1433
		1434	errno = ENAMETOOLONG;
		1435	if (linklen + 1 + rellen >= PATH_MAX)
		1436	return;
		1437
		1438	errno = ELOOP;
		1439	if (!--symlinks)
		1440	return;
		1441
		1442	if (*tmp1 == '/')
		1443	res = req->ptr2; /* symlink resolves to an absolute path */
		1444
		1445	/* we need to be careful, as rel might point into tmp2 already */
		1446	memmove (tmp2 + linklen + 1, rel, rellen + 1);
		1447	tmp2 [linklen] = '/';
		1448	memcpy (tmp2, tmp1, linklen);
		1449
		1450	rel = tmp2;
		1451	}
		1452	}
		1453
		1454	/* special case for the lone root path */
		1455	if (res == req->ptr2)
		1456	*res++ = '/';
		1457
		1458	req->result = res - (char *)req->ptr2;
		1459
		1460	done:
		1461	req->ptr2 = realloc (req->ptr2, req->result); /* trade time for space savings */
		1462	}
		1463
		1464	static signed char
		1465	eio_dent_cmp (const eio_dirent *a, const eio_dirent *b)
		1466	{
		1467	return a->score - b->score ? a->score - b->score /* works because our signed char is always 0..100 */
		1468	: a->inode < b->inode ? -1
		1469	: a->inode > b->inode ? 1
		1470	: 0;
		1471	}
		1472
		1473	#define EIO_DENT_CMP(i,op,j) eio_dent_cmp (&i, &j) op 0
		1474
		1475	#define EIO_SORT_CUTOFF 30 /* quite high, but performs well on many filesystems */
		1476	#define EIO_SORT_FAST 60 /* when to only use insertion sort */
		1477
		1478	static void
		1479	eio_dent_radix_sort (eio_dirent *dents, int size, signed char score_bits, eio_ino_t inode_bits)
		1480	{
		1481	unsigned char bits [9 + sizeof (eio_ino_t) * 8];
		1482	unsigned char *bit = bits;
		1483
		1484	assert (CHAR_BIT == 8);
		1485	assert (sizeof (eio_dirent) * 8 < 256);
		1486	assert (offsetof (eio_dirent, inode)); /* we use bit #0 as sentinel */
		1487	assert (offsetof (eio_dirent, score)); /* we use bit #0 as sentinel */
		1488
		1489	if (size <= EIO_SORT_FAST)
		1490	return;
		1491
		1492	/* first prepare an array of bits to test in our radix sort */
		1493	/* try to take endianness into account, as well as differences in eio_ino_t sizes */
		1494	/* inode_bits must contain all inodes ORed together */
		1495	/* which is used to skip bits that are 0 everywhere, which is very common */
		1496	{
		1497	eio_ino_t endianness;
		1498	int i, j;
		1499
		1500	/* we store the byte offset of byte n into byte n of "endianness" */
		1501	for (i = 0; i < sizeof (eio_ino_t); ++i)
		1502	((unsigned char *)&endianness)[i] = i;
		1503
		1504	*bit++ = 0;
		1505
		1506	for (i = 0; i < sizeof (eio_ino_t); ++i)
		1507	{
		1508	/* shifting off the byte offsets out of "endianness" */
		1509	int offs = (offsetof (eio_dirent, inode) + (endianness & 0xff)) * 8;
		1510	endianness >>= 8;
		1511
		1512	for (j = 0; j < 8; ++j)
		1513	if (inode_bits & (((eio_ino_t)1) << (i * 8 + j)))
		1514	*bit++ = offs + j;
		1515	}
		1516
		1517	for (j = 0; j < 8; ++j)
		1518	if (score_bits & (1 << j))
		1519	*bit++ = offsetof (eio_dirent, score) * 8 + j;
		1520	}
		1521
		1522	/* now actually do the sorting (a variant of MSD radix sort) */
		1523	{
		1524	eio_dirent *base_stk [9 + sizeof (eio_ino_t) * 8], *base;
		1525	eio_dirent *end_stk [9 + sizeof (eio_ino_t) * 8], *end;
		1526	unsigned char *bit_stk [9 + sizeof (eio_ino_t) * 8];
		1527	int stk_idx = 0;
		1528
		1529	base_stk [stk_idx] = dents;
		1530	end_stk [stk_idx] = dents + size;
		1531	bit_stk [stk_idx] = bit - 1;
		1532
		1533	do
		1534	{
		1535	base = base_stk [stk_idx];
		1536	end = end_stk [stk_idx];
		1537	bit = bit_stk [stk_idx];
		1538
		1539	for (;;)
		1540	{
		1541	unsigned char O = *bit >> 3;
		1542	unsigned char M = 1 << (*bit & 7);
		1543
		1544	eio_dirent *a = base;
		1545	eio_dirent *b = end;
		1546
		1547	if (b - a < EIO_SORT_CUTOFF)
		1548	break;
		1549
		1550	/* now bit-partition the array on the bit */
		1551	/* this ugly asymmetric loop seems to perform much better than typical */
		1552	/* partition algos found in the literature */
		1553	do
		1554	if (!(((unsigned char *)a)[O] & M))
		1555	++a;
		1556	else if (!(((unsigned char *)--b)[O] & M))
		1557	{
		1558	eio_dirent tmp = *a; *a = *b; *b = tmp;
		1559	++a;
		1560	}
		1561	while (b > a);
		1562
		1563	/* next bit, or stop, if no bits left in this path */
		1564	if (!*--bit)
		1565	break;
		1566
		1567	base_stk [stk_idx] = a;
		1568	end_stk [stk_idx] = end;
		1569	bit_stk [stk_idx] = bit;
		1570	++stk_idx;
		1571
		1572	end = a;
		1573	}
		1574	}
		1575	while (stk_idx--);
		1576	}
		1577	}
		1578
		1579	static void
		1580	eio_dent_insertion_sort (eio_dirent *dents, int size)
		1581	{
		1582	/* first move the smallest element to the front, to act as a sentinel */
		1583	{
		1584	int i;
		1585	eio_dirent *min = dents;
		1586
		1587	/* the radix pre-pass ensures that the minimum element is in the first EIO_SORT_CUTOFF + 1 elements */
		1588	for (i = size > EIO_SORT_FAST ? EIO_SORT_CUTOFF + 1 : size; --i; )
		1589	if (EIO_DENT_CMP (dents [i], <, *min))
		1590	min = &dents [i];
		1591
		1592	/* swap elements 0 and j (minimum) */
		1593	{
		1594	eio_dirent tmp = *dents; *dents = *min; *min = tmp;
		1595	}
		1596	}
		1597
		1598	/* then do standard insertion sort, assuming that all elements are >= dents [0] */
		1599	{
		1600	eio_dirent *i, *j;
		1601
		1602	for (i = dents + 1; i < dents + size; ++i)
		1603	{
		1604	eio_dirent value = *i;
		1605
		1606	for (j = i - 1; EIO_DENT_CMP (*j, >, value); --j)
		1607	j [1] = j [0];
		1608
		1609	j [1] = value;
		1610	}
		1611	}
		1612	}
		1613
		1614	static void
		1615	eio_dent_sort (eio_dirent *dents, int size, signed char score_bits, eio_ino_t inode_bits)
		1616	{
		1617	if (size <= 1)
		1618	return; /* our insertion sort relies on size > 0 */
		1619
		1620	/* first we use a radix sort, but only for dirs >= EIO_SORT_FAST */
		1621	/* and stop sorting when the partitions are <= EIO_SORT_CUTOFF */
		1622	eio_dent_radix_sort (dents, size, score_bits, inode_bits);
		1623
		1624	/* use an insertion sort at the end, or for small arrays, */
		1625	/* as insertion sort is more efficient for small partitions */
		1626	eio_dent_insertion_sort (dents, size);
		1627	}
		1628
896	/* read a full directory */	1629	/* read a full directory */
897	static void	1630	static void
898	eio__scandir (eio_req *req, etp_worker *self)	1631	eio__scandir (eio_req *req, etp_worker *self)
899	{	1632	{
		1633	char *name, *names;
		1634	int namesalloc = 4096 - sizeof (void *) * 4;
		1635	int namesoffs = 0;
		1636	int flags = req->int1;
		1637	eio_dirent *dents = 0;
		1638	int dentalloc = 128;
		1639	int dentoffs = 0;
		1640	eio_ino_t inode_bits = 0;
		1641	#ifdef _WIN32
		1642	HANDLE dirp;
		1643	WIN32_FIND_DATA entp;
		1644	#else
900	DIR *dirp;	1645	DIR *dirp;
901	EIO_STRUCT_DIRENT *entp;	1646	EIO_STRUCT_DIRENT *entp;
902	char *name, *names;	1647	#endif
903	int memlen = 4096;
904	int memofs = 0;
905	int res = 0;
906		1648
907	X_LOCK (wrklock);	1649	req->result = -1;
		1650
		1651	if (!(flags & EIO_READDIR_DENTS))
		1652	flags &= ~(EIO_READDIR_DIRS_FIRST | EIO_READDIR_STAT_ORDER);
		1653
		1654	#ifdef _WIN32
		1655	{
		1656	char *path = malloc (MAX_PATH);
		1657	_snprintf (path, MAX_PATH, "%s/*", (const char *)req->ptr1);
		1658	dirp = FindFirstFile (path, &entp);
		1659	free (path);
		1660
		1661	if (!dirp)
		1662	{
		1663	switch (GetLastError ())
		1664	{
		1665	case ERROR_FILE_NOT_FOUND:
		1666	req->result = 0;
		1667	break;
		1668
		1669	case ERROR_PATH_NOT_FOUND:
		1670	case ERROR_NO_MORE_FILES:
		1671	errno = ENOENT;
		1672	break;
		1673
		1674	case ERROR_NOT_ENOUGH_MEMORY:
		1675	errno = ENOMEM;
		1676	break;
		1677
		1678	default:
		1679	errno = EINVAL;
		1680	break;
		1681	}
		1682
		1683	}
		1684	}
		1685	#else
908	self->dirp = dirp = opendir (req->ptr1);	1686	dirp = opendir (req->ptr1);
		1687	#endif
		1688
909	req->flags |= EIO_FLAG_PTR2_FREE;	1689	if (req->flags & EIO_FLAG_PTR1_FREE)
		1690	free (req->ptr1);
		1691
		1692	req->flags |= EIO_FLAG_PTR1_FREE | EIO_FLAG_PTR2_FREE;
		1693	req->ptr1 = dents = flags ? malloc (dentalloc * sizeof (eio_dirent)) : 0;
910	req->ptr2 = names = malloc (memlen);	1694	req->ptr2 = names = malloc (namesalloc);
911	X_UNLOCK (wrklock);
912		1695
913	if (dirp && names)	1696	if (dirp && names && (!flags || dents))
914	for (;;)	1697	for (;;)
915	{	1698	{
		1699	int more;
		1700
		1701	#ifdef _WIN32
		1702	more = dirp;
		1703	#else
916	errno = 0;	1704	errno = 0;
917	entp = readdir (dirp);	1705	entp = readdir (dirp);
		1706	more = entp;
		1707	#endif
918		1708
919	if (!entp)	1709	if (!more)
		1710	{
		1711	#ifndef _WIN32
		1712	int old_errno = errno;
		1713	closedir (dirp);
		1714	errno = old_errno;
		1715
		1716	if (errno)
		1717	break;
		1718	#endif
		1719
		1720	/* sort etc. */
		1721	req->int1 = flags;
		1722	req->result = dentoffs;
		1723
		1724	if (flags & EIO_READDIR_STAT_ORDER)
		1725	eio_dent_sort (dents, dentoffs, flags & EIO_READDIR_DIRS_FIRST ? 7 : 0, inode_bits);
		1726	else if (flags & EIO_READDIR_DIRS_FIRST)
		1727	if (flags & EIO_READDIR_FOUND_UNKNOWN)
		1728	eio_dent_sort (dents, dentoffs, 7, inode_bits); /* sort by score and inode */
		1729	else
		1730	{
		1731	/* in this case, all is known, and we just put dirs first and sort them */
		1732	eio_dirent *oth = dents + dentoffs;
		1733	eio_dirent *dir = dents;
		1734
		1735	/* now partition dirs to the front, and non-dirs to the back */
		1736	/* by walking from both sides and swapping if necessary */
		1737	while (oth > dir)
		1738	{
		1739	if (dir->type == EIO_DT_DIR)
		1740	++dir;
		1741	else if ((--oth)->type == EIO_DT_DIR)
		1742	{
		1743	eio_dirent tmp = *dir; *dir = *oth; *oth = tmp;
		1744
		1745	++dir;
		1746	}
		1747	}
		1748
		1749	/* now sort the dirs only (dirs all have the same score) */
		1750	eio_dent_sort (dents, dir - dents, 0, inode_bits);
		1751	}
		1752
920	break;	1753	break;
		1754	}
921		1755
922	name = entp->d_name;	1756	/* now add the entry to our list(s) */
		1757	name = D_NAME (entp);
923		1758
		1759	/* skip . and .. entries */
924	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))	1760	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
925	{	1761	{
926	int len = strlen (name) + 1;	1762	int len = D_NAMLEN (entp) + 1;
927		1763
928	res++;	1764	while (ecb_expect_false (namesoffs + len > namesalloc))
929
930	while (memofs + len > memlen)
931	{	1765	{
932	memlen *= 2;	1766	namesalloc *= 2;
933	X_LOCK (wrklock);
934	req->ptr2 = names = realloc (names, memlen);	1767	req->ptr2 = names = realloc (names, namesalloc);
935	X_UNLOCK (wrklock);
936		1768
937	if (!names)	1769	if (!names)
938	break;	1770	break;
939	}	1771	}
940		1772
941	memcpy (names + memofs, name, len);	1773	memcpy (names + namesoffs, name, len);
		1774
		1775	if (dents)
		1776	{
		1777	struct eio_dirent *ent;
		1778
		1779	if (ecb_expect_false (dentoffs == dentalloc))
		1780	{
		1781	dentalloc *= 2;
		1782	req->ptr1 = dents = realloc (dents, dentalloc * sizeof (eio_dirent));
		1783
		1784	if (!dents)
		1785	break;
		1786	}
		1787
		1788	ent = dents + dentoffs;
		1789
		1790	ent->nameofs = namesoffs; /* rather dirtily we store the offset in the pointer */
		1791	ent->namelen = len - 1;
		1792	ent->inode = D_INO (entp);
		1793
		1794	inode_bits |= ent->inode;
		1795
		1796	switch (D_TYPE (entp))
		1797	{
		1798	default:
		1799	ent->type = EIO_DT_UNKNOWN;
		1800	flags |= EIO_READDIR_FOUND_UNKNOWN;
		1801	break;
		1802
		1803	#ifdef DT_FIFO
		1804	case DT_FIFO: ent->type = EIO_DT_FIFO; break;
		1805	#endif
		1806	#ifdef DT_CHR
		1807	case DT_CHR: ent->type = EIO_DT_CHR; break;
		1808	#endif
		1809	#ifdef DT_MPC
		1810	case DT_MPC: ent->type = EIO_DT_MPC; break;
		1811	#endif
		1812	#ifdef DT_DIR
		1813	case DT_DIR: ent->type = EIO_DT_DIR; break;
		1814	#endif
		1815	#ifdef DT_NAM
		1816	case DT_NAM: ent->type = EIO_DT_NAM; break;
		1817	#endif
		1818	#ifdef DT_BLK
		1819	case DT_BLK: ent->type = EIO_DT_BLK; break;
		1820	#endif
		1821	#ifdef DT_MPB
		1822	case DT_MPB: ent->type = EIO_DT_MPB; break;
		1823	#endif
		1824	#ifdef DT_REG
		1825	case DT_REG: ent->type = EIO_DT_REG; break;
		1826	#endif
		1827	#ifdef DT_NWK
		1828	case DT_NWK: ent->type = EIO_DT_NWK; break;
		1829	#endif
		1830	#ifdef DT_CMP
		1831	case DT_CMP: ent->type = EIO_DT_CMP; break;
		1832	#endif
		1833	#ifdef DT_LNK
		1834	case DT_LNK: ent->type = EIO_DT_LNK; break;
		1835	#endif
		1836	#ifdef DT_SOCK
		1837	case DT_SOCK: ent->type = EIO_DT_SOCK; break;
		1838	#endif
		1839	#ifdef DT_DOOR
		1840	case DT_DOOR: ent->type = EIO_DT_DOOR; break;
		1841	#endif
		1842	#ifdef DT_WHT
		1843	case DT_WHT: ent->type = EIO_DT_WHT; break;
		1844	#endif
		1845	}
		1846
		1847	ent->score = 7;
		1848
		1849	if (flags & EIO_READDIR_DIRS_FIRST)
		1850	{
		1851	if (ent->type == EIO_DT_UNKNOWN)
		1852	{
		1853	if (*name == '.') /* leading dots are likely directories, and, in any case, rare */
		1854	ent->score = 1;
		1855	else if (!strchr (name, '.')) /* absense of dots indicate likely dirs */
		1856	ent->score = len <= 2 ? 4 - len : len <= 4 ? 4 : len <= 7 ? 5 : 6; /* shorter == more likely dir, but avoid too many classes */
		1857	}
		1858	else if (ent->type == EIO_DT_DIR)
		1859	ent->score = 0;
		1860	}
		1861	}
		1862
942	memofs += len;	1863	namesoffs += len;
		1864	++dentoffs;
943	}	1865	}
		1866
		1867	if (EIO_CANCELLED (req))
		1868	{
		1869	errno = ECANCELED;
		1870	break;
		1871	}
		1872
		1873	#ifdef _WIN32
		1874	if (!FindNextFile (dirp, &entp))
		1875	{
		1876	FindClose (dirp);
		1877	dirp = 0;
		1878	}
		1879	#endif
944	}	1880	}
945
946	if (errno)
947	res = -1;
948
949	req->result = res;
950	}	1881	}
951		1882
952	/*****************************************************************************/	1883	/*****************************************************************************/
953		1884
954	#define ALLOC(len) \	1885	#define ALLOC(len) \
…		…
970	{	1901	{
971	ETP_REQ *req;	1902	ETP_REQ *req;
972	struct timespec ts;	1903	struct timespec ts;
973	etp_worker *self = (etp_worker *)thr_arg;	1904	etp_worker *self = (etp_worker *)thr_arg;
974		1905
975	/* try to distribute timeouts somewhat randomly */	1906	/* try to distribute timeouts somewhat evenly */
976	ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL);	1907	ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL);
977		1908
978	for (;;)	1909	for (;;)
979	{	1910	{
		1911	ts.tv_sec = 0;
		1912
980	X_LOCK (reqlock);	1913	X_LOCK (reqlock);
981		1914
982	for (;;)	1915	for (;;)
983	{	1916	{
984	self->req = req = reqq_shift (&req_queue);	1917	self->req = req = reqq_shift (&req_queue);
985		1918
986	if (req)	1919	if (req)
987	break;	1920	break;
988		1921
		1922	if (ts.tv_sec == 1) /* no request, but timeout detected, let's quit */
		1923	{
		1924	X_UNLOCK (reqlock);
		1925	X_LOCK (wrklock);
		1926	--started;
		1927	X_UNLOCK (wrklock);
		1928	goto quit;
		1929	}
		1930
989	++idle;	1931	++idle;
990		1932
991	ts.tv_sec = time (0) + IDLE_TIMEOUT;	1933	if (idle <= max_idle)
992	if (X_COND_TIMEDWAIT (reqwait, reqlock, ts) == ETIMEDOUT)	1934	/* we are allowed to idle, so do so without any timeout */
		1935	X_COND_WAIT (reqwait, reqlock);
		1936	else
993	{	1937	{
994	if (idle > max_idle)	1938	/* initialise timeout once */
995	{	1939	if (!ts.tv_sec)
996	--idle;	1940	ts.tv_sec = time (0) + idle_timeout;
997	X_UNLOCK (reqlock);
998	X_LOCK (wrklock);
999	--started;
1000	X_UNLOCK (wrklock);
1001	goto quit;
1002	}
1003		1941
1004	/* we are allowed to idle, so do so without any timeout */
1005	X_COND_WAIT (reqwait, reqlock);	1942	if (X_COND_TIMEDWAIT (reqwait, reqlock, ts) == ETIMEDOUT)
		1943	ts.tv_sec = 1; /* assuming this is not a value computed above.,.. */
1006	}	1944	}
1007		1945
1008	--idle;	1946	--idle;
1009	}	1947	}
1010		1948
…		…
1013	X_UNLOCK (reqlock);	1951	X_UNLOCK (reqlock);
1014		1952
1015	if (req->type < 0)	1953	if (req->type < 0)
1016	goto quit;	1954	goto quit;
1017		1955
1018	if (!EIO_CANCELLED (req))
1019	ETP_EXECUTE (self, req);	1956	ETP_EXECUTE (self, req);
1020		1957
1021	X_LOCK (reslock);	1958	X_LOCK (reslock);
1022		1959
1023	++npending;	1960	++npending;
1024		1961
…		…
1039	return 0;	1976	return 0;
1040	}	1977	}
1041		1978
1042	/*****************************************************************************/	1979	/*****************************************************************************/
1043		1980
		1981	int ecb_cold
1044	int eio_init (void (*want_poll)(void), void (*done_poll)(void))	1982	eio_init (void (*want_poll)(void), void (*done_poll)(void))
1045	{	1983	{
1046	return etp_init (want_poll, done_poll);	1984	return etp_init (want_poll, done_poll);
1047	}	1985	}
1048		1986
		1987	ecb_inline void
1049	static void eio_api_destroy (eio_req *req)	1988	eio_api_destroy (eio_req *req)
1050	{	1989	{
1051	free (req);	1990	free (req);
1052	}	1991	}
1053		1992
1054	#define REQ(rtype) \	1993	#define REQ(rtype) \
…		…
1073	{ \	2012	{ \
1074	eio_api_destroy (req); \	2013	eio_api_destroy (req); \
1075	return 0; \	2014	return 0; \
1076	}	2015	}
1077		2016
		2017	static void
1078	static void eio_execute (etp_worker *self, eio_req *req)	2018	eio_execute (etp_worker *self, eio_req *req)
1079	{	2019	{
1080	errno = 0;	2020	if (ecb_expect_false (EIO_CANCELLED (req)))
		2021	{
		2022	req->result = -1;
		2023	req->errorno = ECANCELED;
		2024	return;
		2025	}
1081		2026
1082	switch (req->type)	2027	switch (req->type)
1083	{	2028	{
1084	case EIO_READ: ALLOC (req->size);	2029	case EIO_READ: ALLOC (req->size);
1085	req->result = req->offs >= 0	2030	req->result = req->offs >= 0
…		…
1097	case EIO_LSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));	2042	case EIO_LSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));
1098	req->result = lstat (req->ptr1, (EIO_STRUCT_STAT *)req->ptr2); break;	2043	req->result = lstat (req->ptr1, (EIO_STRUCT_STAT *)req->ptr2); break;
1099	case EIO_FSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));	2044	case EIO_FSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));
1100	req->result = fstat (req->int1, (EIO_STRUCT_STAT *)req->ptr2); break;	2045	req->result = fstat (req->int1, (EIO_STRUCT_STAT *)req->ptr2); break;
1101		2046
		2047	case EIO_STATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS));
		2048	req->result = statvfs (req->ptr1, (EIO_STRUCT_STATVFS *)req->ptr2); break;
		2049	case EIO_FSTATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS));
		2050	req->result = fstatvfs (req->int1, (EIO_STRUCT_STATVFS *)req->ptr2); break;
		2051
1102	case EIO_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break;	2052	case EIO_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break;
1103	case EIO_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;	2053	case EIO_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
1104	case EIO_CHMOD: req->result = chmod (req->ptr1, (mode_t)req->int2); break;	2054	case EIO_CHMOD: req->result = chmod (req->ptr1, (mode_t)req->int2); break;
1105	case EIO_FCHMOD: req->result = fchmod (req->int1, (mode_t)req->int2); break;	2055	case EIO_FCHMOD: req->result = fchmod (req->int1, (mode_t)req->int2); break;
1106	case EIO_TRUNCATE: req->result = truncate (req->ptr1, req->offs); break;	2056	case EIO_TRUNCATE: req->result = truncate (req->ptr1, req->offs); break;
…		…
1113	case EIO_RMDIR: req->result = rmdir (req->ptr1); break;	2063	case EIO_RMDIR: req->result = rmdir (req->ptr1); break;
1114	case EIO_MKDIR: req->result = mkdir (req->ptr1, (mode_t)req->int2); break;	2064	case EIO_MKDIR: req->result = mkdir (req->ptr1, (mode_t)req->int2); break;
1115	case EIO_RENAME: req->result = rename (req->ptr1, req->ptr2); break;	2065	case EIO_RENAME: req->result = rename (req->ptr1, req->ptr2); break;
1116	case EIO_LINK: req->result = link (req->ptr1, req->ptr2); break;	2066	case EIO_LINK: req->result = link (req->ptr1, req->ptr2); break;
1117	case EIO_SYMLINK: req->result = symlink (req->ptr1, req->ptr2); break;	2067	case EIO_SYMLINK: req->result = symlink (req->ptr1, req->ptr2); break;
1118	case EIO_MKNOD: req->result = mknod (req->ptr1, (mode_t)req->int2, (dev_t)req->int3); break;	2068	case EIO_MKNOD: req->result = mknod (req->ptr1, (mode_t)req->int2, (dev_t)req->offs); break;
1119		2069
		2070	case EIO_REALPATH: eio__realpath (req, self); break;
		2071
1120	case EIO_READLINK: ALLOC (NAME_MAX);	2072	case EIO_READLINK: ALLOC (PATH_MAX);
1121	req->result = readlink (req->ptr1, req->ptr2, NAME_MAX); break;	2073	req->result = readlink (req->ptr1, req->ptr2, PATH_MAX); break;
1122		2074
1123	case EIO_SYNC: req->result = 0; sync (); break;	2075	case EIO_SYNC: req->result = 0; sync (); break;
1124	case EIO_FSYNC: req->result = fsync (req->int1); break;	2076	case EIO_FSYNC: req->result = fsync (req->int1); break;
1125	case EIO_FDATASYNC: req->result = fdatasync (req->int1); break;	2077	case EIO_FDATASYNC: req->result = fdatasync (req->int1); break;
		2078	case EIO_MSYNC: req->result = eio__msync (req->ptr2, req->size, req->int1); break;
		2079	case EIO_MTOUCH: req->result = eio__mtouch (req); break;
		2080	case EIO_MLOCK: req->result = eio__mlock (req->ptr2, req->size); break;
		2081	case EIO_MLOCKALL: req->result = eio__mlockall (req->int1); break;
		2082	case EIO_SYNC_FILE_RANGE: req->result = eio__sync_file_range (req->int1, req->offs, req->size, req->int2); break;
		2083	case EIO_FALLOCATE: req->result = eio__fallocate (req->int1, req->int2, req->offs, req->size); break;
1126		2084
1127	case EIO_READDIR: eio__scandir (req, self); break;	2085	case EIO_READDIR: eio__scandir (req, self); break;
1128		2086
1129	case EIO_BUSY:	2087	case EIO_BUSY:
1130	#ifdef _WIN32	2088	#ifdef _WIN32
1131	Sleep (req->nv1 * 1000.);	2089	Sleep (req->nv1 * 1e3);
1132	#else	2090	#else
1133	{	2091	{
1134	struct timeval tv;	2092	struct timeval tv;
1135		2093
1136	tv.tv_sec = req->nv1;	2094	tv.tv_sec = req->nv1;
1137	tv.tv_usec = (req->nv1 - tv.tv_sec) * 1000000.;	2095	tv.tv_usec = (req->nv1 - tv.tv_sec) * 1e6;
1138		2096
1139	req->result = select (0, 0, 0, 0, &tv);	2097	req->result = select (0, 0, 0, 0, &tv);
1140	}	2098	}
1141	#endif	2099	#endif
1142	break;	2100	break;
…		…
1157	times = tv;	2115	times = tv;
1158	}	2116	}
1159	else	2117	else
1160	times = 0;	2118	times = 0;
1161		2119
1162
1163	req->result = req->type == EIO_FUTIME	2120	req->result = req->type == EIO_FUTIME
1164	? futimes (req->int1, times)	2121	? futimes (req->int1, times)
1165	: utimes (req->ptr1, times);	2122	: utimes (req->ptr1, times);
1166	}	2123	}
		2124	break;
1167		2125
1168	case EIO_GROUP:	2126	case EIO_GROUP:
		2127	abort (); /* handled in eio_request */
		2128
1169	case EIO_NOP:	2129	case EIO_NOP:
1170	req->result = 0;	2130	req->result = 0;
1171	break;	2131	break;
1172		2132
1173	case EIO_CUSTOM:	2133	case EIO_CUSTOM:
1174	req->feed (req);	2134	req->feed (req);
1175	break;	2135	break;
1176		2136
1177	default:	2137	default:
		2138	errno = ENOSYS;
1178	req->result = -1;	2139	req->result = -1;
1179	break;	2140	break;
1180	}	2141	}
1181		2142
1182	req->errorno = errno;	2143	req->errorno = errno;
…		…
1202	eio_req *eio_fsync (int fd, int pri, eio_cb cb, void *data)	2163	eio_req *eio_fsync (int fd, int pri, eio_cb cb, void *data)
1203	{	2164	{
1204	REQ (EIO_FSYNC); req->int1 = fd; SEND;	2165	REQ (EIO_FSYNC); req->int1 = fd; SEND;
1205	}	2166	}
1206		2167
		2168	eio_req *eio_msync (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data)
		2169	{
		2170	REQ (EIO_MSYNC); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND;
		2171	}
		2172
		2173	eio_req *eio_mtouch (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data)
		2174	{
		2175	REQ (EIO_MTOUCH); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND;
		2176	}
		2177
		2178	eio_req *eio_mlock (void *addr, size_t length, int pri, eio_cb cb, void *data)
		2179	{
		2180	REQ (EIO_MLOCK); req->ptr2 = addr; req->size = length; SEND;
		2181	}
		2182
		2183	eio_req *eio_mlockall (int flags, int pri, eio_cb cb, void *data)
		2184	{
		2185	REQ (EIO_MLOCKALL); req->int1 = flags; SEND;
		2186	}
		2187
		2188	eio_req *eio_sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags, int pri, eio_cb cb, void *data)
		2189	{
		2190	REQ (EIO_SYNC_FILE_RANGE); req->int1 = fd; req->offs = offset; req->size = nbytes; req->int2 = flags; SEND;
		2191	}
		2192
		2193	eio_req *eio_fallocate (int fd, int mode, off_t offset, size_t len, int pri, eio_cb cb, void *data)
		2194	{
		2195	REQ (EIO_FALLOCATE); req->int1 = fd; req->int2 = mode; req->offs = offset; req->size = len; SEND;
		2196	}
		2197
1207	eio_req *eio_fdatasync (int fd, int pri, eio_cb cb, void *data)	2198	eio_req *eio_fdatasync (int fd, int pri, eio_cb cb, void *data)
1208	{	2199	{
1209	REQ (EIO_FDATASYNC); req->int1 = fd; SEND;	2200	REQ (EIO_FDATASYNC); req->int1 = fd; SEND;
1210	}	2201	}
1211		2202
…		…
1232	eio_req *eio_fstat (int fd, int pri, eio_cb cb, void *data)	2223	eio_req *eio_fstat (int fd, int pri, eio_cb cb, void *data)
1233	{	2224	{
1234	REQ (EIO_FSTAT); req->int1 = fd; SEND;	2225	REQ (EIO_FSTAT); req->int1 = fd; SEND;
1235	}	2226	}
1236		2227
		2228	eio_req *eio_fstatvfs (int fd, int pri, eio_cb cb, void *data)
		2229	{
		2230	REQ (EIO_FSTATVFS); req->int1 = fd; SEND;
		2231	}
		2232
1237	eio_req *eio_futime (int fd, double atime, double mtime, int pri, eio_cb cb, void *data)	2233	eio_req *eio_futime (int fd, double atime, double mtime, int pri, eio_cb cb, void *data)
1238	{	2234	{
1239	REQ (EIO_FUTIME); req->int1 = fd; req->nv1 = atime; req->nv2 = mtime; SEND;	2235	REQ (EIO_FUTIME); req->int1 = fd; req->nv1 = atime; req->nv2 = mtime; SEND;
1240	}	2236	}
1241		2237
…		…
1247	eio_req *eio_fchmod (int fd, mode_t mode, int pri, eio_cb cb, void *data)	2243	eio_req *eio_fchmod (int fd, mode_t mode, int pri, eio_cb cb, void *data)
1248	{	2244	{
1249	REQ (EIO_FCHMOD); req->int1 = fd; req->int2 = (long)mode; SEND;	2245	REQ (EIO_FCHMOD); req->int1 = fd; req->int2 = (long)mode; SEND;
1250	}	2246	}
1251		2247
1252	eio_req *eio_fchown (int fd, uid_t uid, gid_t gid, int pri, eio_cb cb, void *data)	2248	eio_req *eio_fchown (int fd, eio_uid_t uid, eio_gid_t gid, int pri, eio_cb cb, void *data)
1253	{	2249	{
1254	REQ (EIO_FCHOWN); req->int1 = fd; req->int2 = (long)uid; req->int3 = (long)gid; SEND;	2250	REQ (EIO_FCHOWN); req->int1 = fd; req->int2 = (long)uid; req->int3 = (long)gid; SEND;
1255	}	2251	}
1256		2252
1257	eio_req *eio_dup2 (int fd, int fd2, int pri, eio_cb cb, void *data)	2253	eio_req *eio_dup2 (int fd, int fd2, int pri, eio_cb cb, void *data)
…		…
1277	eio_req *eio_truncate (const char *path, off_t offset, int pri, eio_cb cb, void *data)	2273	eio_req *eio_truncate (const char *path, off_t offset, int pri, eio_cb cb, void *data)
1278	{	2274	{
1279	REQ (EIO_TRUNCATE); PATH; req->offs = offset; SEND;	2275	REQ (EIO_TRUNCATE); PATH; req->offs = offset; SEND;
1280	}	2276	}
1281		2277
1282	eio_req *eio_chown (const char *path, uid_t uid, gid_t gid, int pri, eio_cb cb, void *data)	2278	eio_req *eio_chown (const char *path, eio_uid_t uid, eio_gid_t gid, int pri, eio_cb cb, void *data)
1283	{	2279	{
1284	REQ (EIO_CHOWN); PATH; req->int2 = (long)uid; req->int3 = (long)gid; SEND;	2280	REQ (EIO_CHOWN); PATH; req->int2 = (long)uid; req->int3 = (long)gid; SEND;
1285	}	2281	}
1286		2282
1287	eio_req *eio_chmod (const char *path, mode_t mode, int pri, eio_cb cb, void *data)	2283	eio_req *eio_chmod (const char *path, mode_t mode, int pri, eio_cb cb, void *data)
…		…
1303	eio_req *eio_readlink (const char *path, int pri, eio_cb cb, void *data)	2299	eio_req *eio_readlink (const char *path, int pri, eio_cb cb, void *data)
1304	{	2300	{
1305	return eio__1path (EIO_READLINK, path, pri, cb, data);	2301	return eio__1path (EIO_READLINK, path, pri, cb, data);
1306	}	2302	}
1307		2303
		2304	eio_req *eio_realpath (const char *path, int pri, eio_cb cb, void *data)
		2305	{
		2306	return eio__1path (EIO_REALPATH, path, pri, cb, data);
		2307	}
		2308
1308	eio_req *eio_stat (const char *path, int pri, eio_cb cb, void *data)	2309	eio_req *eio_stat (const char *path, int pri, eio_cb cb, void *data)
1309	{	2310	{
1310	return eio__1path (EIO_STAT, path, pri, cb, data);	2311	return eio__1path (EIO_STAT, path, pri, cb, data);
1311	}	2312	}
1312		2313
1313	eio_req *eio_lstat (const char *path, int pri, eio_cb cb, void *data)	2314	eio_req *eio_lstat (const char *path, int pri, eio_cb cb, void *data)
1314	{	2315	{
1315	return eio__1path (EIO_LSTAT, path, pri, cb, data);	2316	return eio__1path (EIO_LSTAT, path, pri, cb, data);
1316	}	2317	}
1317		2318
		2319	eio_req *eio_statvfs (const char *path, int pri, eio_cb cb, void *data)
		2320	{
		2321	return eio__1path (EIO_STATVFS, path, pri, cb, data);
		2322	}
		2323
1318	eio_req *eio_unlink (const char *path, int pri, eio_cb cb, void *data)	2324	eio_req *eio_unlink (const char *path, int pri, eio_cb cb, void *data)
1319	{	2325	{
1320	return eio__1path (EIO_UNLINK, path, pri, cb, data);	2326	return eio__1path (EIO_UNLINK, path, pri, cb, data);
1321	}	2327	}
1322		2328
1323	eio_req *eio_rmdir (const char *path, int pri, eio_cb cb, void *data)	2329	eio_req *eio_rmdir (const char *path, int pri, eio_cb cb, void *data)
1324	{	2330	{
1325	return eio__1path (EIO_RMDIR, path, pri, cb, data);	2331	return eio__1path (EIO_RMDIR, path, pri, cb, data);
1326	}	2332	}
1327		2333
1328	eio_req *eio_readdir (const char *path, int pri, eio_cb cb, void *data)	2334	eio_req *eio_readdir (const char *path, int flags, int pri, eio_cb cb, void *data)
1329	{	2335	{
1330	return eio__1path (EIO_READDIR, path, pri, cb, data);	2336	REQ (EIO_READDIR); PATH; req->int1 = flags; SEND;
1331	}	2337	}
1332		2338
1333	eio_req *eio_mknod (const char *path, mode_t mode, dev_t dev, int pri, eio_cb cb, void *data)	2339	eio_req *eio_mknod (const char *path, mode_t mode, dev_t dev, int pri, eio_cb cb, void *data)
1334	{	2340	{
1335	REQ (EIO_MKNOD); PATH; req->int2 = (long)mode; req->int3 = (long)dev; SEND;	2341	REQ (EIO_MKNOD); PATH; req->int2 = (long)mode; req->offs = (off_t)dev; SEND;
1336	}	2342	}
1337		2343
1338	static eio_req *	2344	static eio_req *
1339	eio__2path (int type, const char *path, const char *new_path, int pri, eio_cb cb, void *data)	2345	eio__2path (int type, const char *path, const char *new_path, int pri, eio_cb cb, void *data)
1340	{	2346	{
…		…
1364	eio_req *eio_rename (const char *path, const char *new_path, int pri, eio_cb cb, void *data)	2370	eio_req *eio_rename (const char *path, const char *new_path, int pri, eio_cb cb, void *data)
1365	{	2371	{
1366	return eio__2path (EIO_RENAME, path, new_path, pri, cb, data);	2372	return eio__2path (EIO_RENAME, path, new_path, pri, cb, data);
1367	}	2373	}
1368		2374
1369	eio_req *eio_custom (eio_cb execute, int pri, eio_cb cb, void *data)	2375	eio_req *eio_custom (void (*execute)(eio_req *), int pri, eio_cb cb, void *data)
1370	{	2376	{
1371	REQ (EIO_CUSTOM); req->feed = execute; SEND;	2377	REQ (EIO_CUSTOM); req->feed = execute; SEND;
1372	}	2378	}
1373		2379
1374	#endif	2380	#endif
…		…
1385	#undef SEND	2391	#undef SEND
1386		2392
1387	/*****************************************************************************/	2393	/*****************************************************************************/
1388	/* grp functions */	2394	/* grp functions */
1389		2395
		2396	void
1390	void eio_grp_feed (eio_req *grp, void (*feed)(eio_req *req), int limit)	2397	eio_grp_feed (eio_req *grp, void (*feed)(eio_req *req), int limit)
1391	{	2398	{
1392	grp->int2 = limit;	2399	grp->int2 = limit;
1393	grp->feed = feed;	2400	grp->feed = feed;
1394		2401
1395	grp_try_feed (grp);	2402	grp_try_feed (grp);
1396	}	2403	}
1397		2404
		2405	void
1398	void eio_grp_limit (eio_req *grp, int limit)	2406	eio_grp_limit (eio_req *grp, int limit)
1399	{	2407	{
1400	grp->int2 = limit;	2408	grp->int2 = limit;
1401		2409
1402	grp_try_feed (grp);	2410	grp_try_feed (grp);
1403	}	2411	}
1404		2412
		2413	void
1405	void eio_grp_add (eio_req *grp, eio_req *req)	2414	eio_grp_add (eio_req *grp, eio_req *req)
1406	{	2415	{
1407	assert (("cannot add requests to IO::AIO::GRP after the group finished", grp->int1 != 2));	2416	assert (("cannot add requests to IO::AIO::GRP after the group finished", grp->int1 != 2));
		2417
		2418	grp->flags |= EIO_FLAG_GROUPADD;
1408		2419
1409	++grp->size;	2420	++grp->size;
1410	req->grp = grp;	2421	req->grp = grp;
1411		2422
1412	req->grp_prev = 0;	2423	req->grp_prev = 0;
…		…
1419	}	2430	}
1420		2431
1421	/*****************************************************************************/	2432	/*****************************************************************************/
1422	/* misc garbage */	2433	/* misc garbage */
1423		2434
		2435	eio_ssize_t
1424	ssize_t eio_sendfile_sync (int ofd, int ifd, off_t offset, size_t count)	2436	eio_sendfile_sync (int ofd, int ifd, off_t offset, size_t count)
1425	{	2437	{
1426	etp_worker wrk;	2438	etp_worker wrk;
		2439	eio_ssize_t ret;
1427		2440
1428	wrk.dbuf = 0;	2441	wrk.dbuf = 0;
1429		2442
1430	eio__sendfile (ofd, ifd, offset, count, &wrk);	2443	ret = eio__sendfile (ofd, ifd, offset, count, &wrk);
1431		2444
1432	if (wrk.dbuf)	2445	if (wrk.dbuf)
1433	free (wrk.dbuf);	2446	free (wrk.dbuf);
1434	}
1435		2447
		2448	return ret;
		2449	}
		2450

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