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Comparing libeio/eio.c (file contents):
Revision 1.53 by root, Sat Jan 9 10:03:09 2010 UTC vs.
Revision 1.99 by root, Tue Jul 26 11:07:08 2011 UTC

1	/*	1	/*
2	* libeio implementation	2	* libeio implementation
3	*	3	*
4	* Copyright (c) 2007,2008,2009,2010 Marc Alexander Lehmann <libeio@schmorp.de>	4	* Copyright (c) 2007,2008,2009,2010,2011 Marc Alexander Lehmann <libeio@schmorp.de>
5	* All rights reserved.	5	* All rights reserved.
6	*	6	*
7	* Redistribution and use in source and binary forms, with or without modifica-	7	* Redistribution and use in source and binary forms, with or without modifica-
8	* tion, are permitted provided that the following conditions are met:	8	* tion, are permitted provided that the following conditions are met:
9	*	9	*
…		…
35	* and other provisions required by the GPL. If you do not delete the	35	* and other provisions required by the GPL. If you do not delete the
36	* provisions above, a recipient may use your version of this file under	36	* provisions above, a recipient may use your version of this file under
37	* either the BSD or the GPL.	37	* either the BSD or the GPL.
38	*/	38	*/
39		39
		40	#ifndef _WIN32
		41	# include "config.h"
		42	#endif
		43
40	#include "eio.h"	44	#include "eio.h"
		45	#include "ecb.h"
41		46
42	#ifdef EIO_STACKSIZE	47	#ifdef EIO_STACKSIZE
43	# define XTHREAD_STACKSIZE EIO_STACKSIZE	48	# define XTHREAD_STACKSIZE EIO_STACKSIZE
44	#endif	49	#endif
45	#include "xthread.h"	50	#include "xthread.h"
…		…
49	#include <stdlib.h>	54	#include <stdlib.h>
50	#include <string.h>	55	#include <string.h>
51	#include <errno.h>	56	#include <errno.h>
52	#include <sys/types.h>	57	#include <sys/types.h>
53	#include <sys/stat.h>	58	#include <sys/stat.h>
54	#include <sys/statvfs.h>
55	#include <limits.h>	59	#include <limits.h>
56	#include <fcntl.h>	60	#include <fcntl.h>
57	#include <assert.h>	61	#include <assert.h>
58		62
		63	/* intptr_t comes from unistd.h, says POSIX/UNIX/tradition */
		64	/* intptr_t only comes from stdint.h, says idiot openbsd coder */
		65	#if HAVE_STDINT_H
		66	# include <stdint.h>
		67	#endif
		68
		69	#ifndef ECANCELED
		70	# define ECANCELED EDOM
		71	#endif
		72	#ifndef ELOOP
		73	# define ELOOP EDOM
		74	#endif
		75
		76	#if !defined(ENOTSOCK) && defined(WSAENOTSOCK)
		77	# define ENOTSOCK WSAENOTSOCK
		78	#endif
		79
		80	static void eio_destroy (eio_req *req);
		81
59	#ifndef EIO_FINISH	82	#ifndef EIO_FINISH
60	# define EIO_FINISH(req) ((req)->finish) && !EIO_CANCELLED (req) ? (req)->finish (req) : 0	83	# define EIO_FINISH(req) ((req)->finish) && !EIO_CANCELLED (req) ? (req)->finish (req) : 0
61	#endif	84	#endif
62		85
63	#ifndef EIO_DESTROY	86	#ifndef EIO_DESTROY
…		…
66		89
67	#ifndef EIO_FEED	90	#ifndef EIO_FEED
68	# define EIO_FEED(req) do { if ((req)->feed ) (req)->feed (req); } while (0)	91	# define EIO_FEED(req) do { if ((req)->feed ) (req)->feed (req); } while (0)
69	#endif	92	#endif
70		93
		94	#ifndef EIO_FD_TO_WIN32_HANDLE
		95	# define EIO_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
		96	#endif
		97	#ifndef EIO_WIN32_HANDLE_TO_FD
		98	# define EIO_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
		99	#endif
		100
		101	#define EIO_ERRNO(errval,retval) ((errno = errval), retval)
		102
		103	#define EIO_ENOSYS() EIO_ERRNO (ENOSYS, -1)
		104
71	#ifdef _WIN32	105	#ifdef _WIN32
72		106
73	/*doh*/	107	#undef PAGESIZE
		108	#define PAGESIZE 4096 /* GetSystemInfo? */
		109
		110	#ifdef EIO_STRUCT_STATI64
		111	#define stat(path,buf) _stati64 (path,buf)
		112	#define fstat(fd,buf) _fstati64 (fd,buf)
		113	#endif
		114	#define lstat(path,buf) stat (path,buf)
		115	#define fsync(fd) (FlushFileBuffers ((HANDLE)EIO_FD_TO_WIN32_HANDLE (fd)) ? 0 : EIO_ERRNO (EBADF, -1))
		116	#define mkdir(path,mode) _mkdir (path)
		117	#define link(old,neu) (CreateHardLink (neu, old, 0) ? 0 : EIO_ERRNO (ENOENT, -1))
		118
		119	#define chmod(path,mode) _chmod (path, mode)
		120	#define dup(fd) _dup (fd)
		121	#define dup2(fd1,fd2) _dup2 (fd1, fd2)
		122
		123	#define fchmod(fd,mode) EIO_ENOSYS ()
		124	#define chown(path,uid,gid) EIO_ENOSYS ()
		125	#define fchown(fd,uid,gid) EIO_ENOSYS ()
		126	#define truncate(path,offs) EIO_ENOSYS () /* far-miss: SetEndOfFile */
		127	#define ftruncate(fd,offs) EIO_ENOSYS () /* near-miss: SetEndOfFile */
		128	#define mknod(path,mode,dev) EIO_ENOSYS ()
		129	#define sync() EIO_ENOSYS ()
		130	#define readlink(path,buf,s) EIO_ENOSYS ()
		131	#define statvfs(path,buf) EIO_ENOSYS ()
		132	#define fstatvfs(fd,buf) EIO_ENOSYS ()
		133
		134	/* rename() uses MoveFile, which fails to overwrite */
		135	#define rename(old,neu) eio__rename (old, neu)
		136
		137	static int
		138	eio__rename (const char *old, const char *neu)
		139	{
		140	if (MoveFileEx (old, neu, MOVEFILE_REPLACE_EXISTING))
		141	return 0;
		142
		143	/* should steal _dosmaperr */
		144	switch (GetLastError ())
		145	{
		146	case ERROR_FILE_NOT_FOUND:
		147	case ERROR_PATH_NOT_FOUND:
		148	case ERROR_INVALID_DRIVE:
		149	case ERROR_NO_MORE_FILES:
		150	case ERROR_BAD_NETPATH:
		151	case ERROR_BAD_NET_NAME:
		152	case ERROR_BAD_PATHNAME:
		153	case ERROR_FILENAME_EXCED_RANGE:
		154	errno = ENOENT;
		155	break;
		156
		157	default:
		158	errno = EACCES;
		159	break;
		160	}
		161
		162	return -1;
		163	}
		164
		165	/* we could even stat and see if it exists */
		166	static int
		167	symlink (const char *old, const char *neu)
		168	{
		169	#if WINVER >= 0x0600
		170	if (CreateSymbolicLink (neu, old, 1))
		171	return 0;
		172
		173	if (CreateSymbolicLink (neu, old, 0))
		174	return 0;
		175	#endif
		176
		177	return EIO_ERRNO (ENOENT, -1);
		178	}
		179
		180	/* POSIX API only */
		181	#define CreateHardLink(neu,old,flags) 0
		182	#define CreateSymbolicLink(neu,old,flags) 0
		183
		184	struct statvfs
		185	{
		186	int dummy;
		187	};
		188
		189	#define DT_DIR EIO_DT_DIR
		190	#define DT_REG EIO_DT_REG
		191	#define D_NAME(entp) entp.cFileName
		192	#define D_TYPE(entp) (entp.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY ? DT_DIR : DT_REG)
		193
74	#else	194	#else
75		195
76	# include "config.h"
77	# include <sys/time.h>	196	#include <sys/time.h>
78	# include <sys/select.h>	197	#include <sys/select.h>
79	# include <sys/mman.h>	198	#include <sys/statvfs.h>
80	# include <unistd.h>	199	#include <unistd.h>
		200	#include <signal.h>
		201	#include <dirent.h>
		202
		203	#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
		204	#include <sys/mman.h>
		205	#endif
		206
		207	#define D_NAME(entp) entp->d_name
		208
		209	/* POSIX_SOURCE is useless on bsd's, and XOPEN_SOURCE is unreliable there, too */
		210	#if __FreeBSD__ || defined __NetBSD__ || defined __OpenBSD__
		211	#define _DIRENT_HAVE_D_TYPE /* sigh */
		212	#define D_INO(de) (de)->d_fileno
		213	#define D_NAMLEN(de) (de)->d_namlen
		214	#elif __linux || defined d_ino || _XOPEN_SOURCE >= 600
		215	#define D_INO(de) (de)->d_ino
		216	#endif
		217
		218	#ifdef _D_EXACT_NAMLEN
		219	#undef D_NAMLEN
		220	#define D_NAMLEN(de) _D_EXACT_NAMLEN (de)
		221	#endif
		222
		223	#ifdef _DIRENT_HAVE_D_TYPE
		224	#define D_TYPE(de) (de)->d_type
		225	#endif
		226
		227	#ifndef EIO_STRUCT_DIRENT
		228	#define EIO_STRUCT_DIRENT struct dirent
		229	#endif
		230
		231	#endif
		232
		233	#if HAVE_UTIMES
81	# include <utime.h>	234	# include <utime.h>
82	# include <signal.h>
83	# include <dirent.h>
84
85	/* POSIX_SOURCE is useless on bsd's, and XOPEN_SOURCE is unreliable there, too */
86	# if __FreeBSD__ || defined __NetBSD__ || defined __OpenBSD__
87	# define _DIRENT_HAVE_D_TYPE /* sigh */
88	# define D_INO(de) (de)->d_fileno
89	# define D_NAMLEN(de) (de)->d_namlen
90	# elif __linux || defined d_ino || _XOPEN_SOURCE >= 600
91	# define D_INO(de) (de)->d_ino
92	# endif	235	#endif
93		236
94	#ifdef _D_EXACT_NAMLEN	237	#if HAVE_SYS_SYSCALL_H
95	# undef D_NAMLEN	238	# include <sys/syscall.h>
96	# define D_NAMLEN(de) _D_EXACT_NAMLEN (de)
97	#endif
98
99	# ifdef _DIRENT_HAVE_D_TYPE
100	# define D_TYPE(de) (de)->d_type
101	# endif	239	#endif
102		240
103	# ifndef EIO_STRUCT_DIRENT	241	#if HAVE_SYS_PRCTL_H
104	# define EIO_STRUCT_DIRENT struct dirent	242	# include <sys/prctl.h>
105	# endif
106
107	#endif	243	#endif
108		244
109	#if HAVE_SENDFILE	245	#if HAVE_SENDFILE
110	# if __linux	246	# if __linux
111	# include <sys/sendfile.h>	247	# include <sys/sendfile.h>
…		…
126	#endif	262	#endif
127	#ifndef D_INO	263	#ifndef D_INO
128	# define D_INO(de) 0	264	# define D_INO(de) 0
129	#endif	265	#endif
130	#ifndef D_NAMLEN	266	#ifndef D_NAMLEN
131	# define D_NAMLEN(de) strlen ((de)->d_name)	267	# define D_NAMLEN(entp) strlen (D_NAME (entp))
132	#endif	268	#endif
133
134	/* number of seconds after which an idle threads exit */
135	#define IDLE_TIMEOUT 10
136		269
137	/* used for struct dirent, AIX doesn't provide it */	270	/* used for struct dirent, AIX doesn't provide it */
138	#ifndef NAME_MAX	271	#ifndef NAME_MAX
139	# define NAME_MAX 4096	272	# define NAME_MAX 4096
140	#endif	273	#endif
141		274
		275	/* used for readlink etc. */
		276	#ifndef PATH_MAX
		277	# define PATH_MAX 4096
		278	#endif
		279
142	/* buffer size for various temporary buffers */	280	/* buffer size for various temporary buffers */
143	#define EIO_BUFSIZE 65536	281	#define EIO_BUFSIZE 65536
144		282
145	#define dBUF \	283	#define dBUF \
146	char *eio_buf; \
147	ETP_WORKER_LOCK (self); \
148	self->dbuf = eio_buf = malloc (EIO_BUFSIZE); \	284	char *eio_buf = malloc (EIO_BUFSIZE); \
149	ETP_WORKER_UNLOCK (self); \
150	errno = ENOMEM; \	285	errno = ENOMEM; \
151	if (!eio_buf) \	286	if (!eio_buf) \
152	return -1;	287	return -1
		288
		289	#define FUBd \
		290	free (eio_buf)
153		291
154	#define EIO_TICKS ((1000000 + 1023) >> 10)	292	#define EIO_TICKS ((1000000 + 1023) >> 10)
155
156	/*****************************************************************************/
157
158	#if __GNUC__ >= 3
159	# define expect(expr,value) __builtin_expect ((expr),(value))
160	#else
161	# define expect(expr,value) (expr)
162	#endif
163
164	#define expect_false(expr) expect ((expr) != 0, 0)
165	#define expect_true(expr) expect ((expr) != 0, 1)
166
167	/*****************************************************************************/
168		293
169	#define ETP_PRI_MIN EIO_PRI_MIN	294	#define ETP_PRI_MIN EIO_PRI_MIN
170	#define ETP_PRI_MAX EIO_PRI_MAX	295	#define ETP_PRI_MAX EIO_PRI_MAX
171		296
172	struct etp_worker;	297	struct etp_worker;
…		…
176	static int eio_finish (eio_req *req);	301	static int eio_finish (eio_req *req);
177	#define ETP_FINISH(req) eio_finish (req)	302	#define ETP_FINISH(req) eio_finish (req)
178	static void eio_execute (struct etp_worker *self, eio_req *req);	303	static void eio_execute (struct etp_worker *self, eio_req *req);
179	#define ETP_EXECUTE(wrk,req) eio_execute (wrk,req)	304	#define ETP_EXECUTE(wrk,req) eio_execute (wrk,req)
180		305
181	#define ETP_WORKER_CLEAR(req) \
182	if (wrk->dbuf) \
183	{ \
184	free (wrk->dbuf); \
185	wrk->dbuf = 0; \
186	} \
187	\
188	if (wrk->dirp) \
189	{ \
190	closedir (wrk->dirp); \
191	wrk->dirp = 0; \
192	}
193
194	#define ETP_WORKER_COMMON \
195	void *dbuf; \
196	DIR *dirp;
197
198	/*****************************************************************************/	306	/*****************************************************************************/
199		307
200	#define ETP_NUM_PRI (ETP_PRI_MAX - ETP_PRI_MIN + 1)	308	#define ETP_NUM_PRI (ETP_PRI_MAX - ETP_PRI_MIN + 1)
201		309
202	/* calculate time difference in ~1/EIO_TICKS of a second */	310	/* calculate time difference in ~1/EIO_TICKS of a second */
		311	ecb_inline int
203	static int tvdiff (struct timeval *tv1, struct timeval *tv2)	312	tvdiff (struct timeval *tv1, struct timeval *tv2)
204	{	313	{
205	return (tv2->tv_sec - tv1->tv_sec ) * EIO_TICKS	314	return (tv2->tv_sec - tv1->tv_sec ) * EIO_TICKS
206	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);	315	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
207	}	316	}
208		317
…		…
215	static unsigned int max_poll_reqs; /* reslock */	324	static unsigned int max_poll_reqs; /* reslock */
216		325
217	static volatile unsigned int nreqs; /* reqlock */	326	static volatile unsigned int nreqs; /* reqlock */
218	static volatile unsigned int nready; /* reqlock */	327	static volatile unsigned int nready; /* reqlock */
219	static volatile unsigned int npending; /* reqlock */	328	static volatile unsigned int npending; /* reqlock */
220	static volatile unsigned int max_idle = 4;	329	static volatile unsigned int max_idle = 4; /* maximum number of threads that can idle indefinitely */
		330	static volatile unsigned int idle_timeout = 10; /* number of seconds after which an idle threads exit */
221		331
222	static mutex_t wrklock = X_MUTEX_INIT;	332	static xmutex_t wrklock;
223	static mutex_t reslock = X_MUTEX_INIT;	333	static xmutex_t reslock;
224	static mutex_t reqlock = X_MUTEX_INIT;	334	static xmutex_t reqlock;
225	static cond_t reqwait = X_COND_INIT;	335	static xcond_t reqwait;
226		336
227	#if !HAVE_PREADWRITE	337	#if !HAVE_PREADWRITE
228	/*	338	/*
229	* make our pread/pwrite emulation safe against themselves, but not against	339	* make our pread/pwrite emulation safe against themselves, but not against
230	* normal read/write by using a mutex. slows down execution a lot,	340	* normal read/write by using a mutex. slows down execution a lot,
231	* but that's your problem, not mine.	341	* but that's your problem, not mine.
232	*/	342	*/
233	static mutex_t preadwritelock = X_MUTEX_INIT;	343	static xmutex_t preadwritelock;
234	#endif	344	#endif
235		345
236	typedef struct etp_worker	346	typedef struct etp_worker
237	{	347	{
238	/* locked by wrklock */	348	/* locked by wrklock */
239	struct etp_worker *prev, *next;	349	struct etp_worker *prev, *next;
240		350
241	thread_t tid;	351	xthread_t tid;
242		352
243	/* locked by reslock, reqlock or wrklock */	353	/* locked by reslock, reqlock or wrklock */
244	ETP_REQ *req; /* currently processed request */	354	ETP_REQ *req; /* currently processed request */
245		355
		356	#ifdef ETP_WORKER_COMMON
246	ETP_WORKER_COMMON	357	ETP_WORKER_COMMON
		358	#endif
247	} etp_worker;	359	} etp_worker;
248		360
249	static etp_worker wrk_first = { &wrk_first, &wrk_first, 0 }; /* NOT etp */	361	static etp_worker wrk_first; /* NOT etp */
250		362
251	#define ETP_WORKER_LOCK(wrk) X_LOCK (wrklock)	363	#define ETP_WORKER_LOCK(wrk) X_LOCK (wrklock)
252	#define ETP_WORKER_UNLOCK(wrk) X_UNLOCK (wrklock)	364	#define ETP_WORKER_UNLOCK(wrk) X_UNLOCK (wrklock)
253		365
254	/* worker threads management */	366	/* worker threads management */
255		367
		368	static void ecb_cold
256	static void etp_worker_clear (etp_worker *wrk)	369	etp_worker_clear (etp_worker *wrk)
257	{	370	{
258	ETP_WORKER_CLEAR (wrk);
259	}	371	}
260		372
		373	static void ecb_cold
261	static void etp_worker_free (etp_worker *wrk)	374	etp_worker_free (etp_worker *wrk)
262	{	375	{
263	wrk->next->prev = wrk->prev;	376	wrk->next->prev = wrk->prev;
264	wrk->prev->next = wrk->next;	377	wrk->prev->next = wrk->next;
265		378
266	free (wrk);	379	free (wrk);
267	}	380	}
268		381
269	static unsigned int etp_nreqs (void)	382	static unsigned int
		383	etp_nreqs (void)
270	{	384	{
271	int retval;	385	int retval;
272	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);	386	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
273	retval = nreqs;	387	retval = nreqs;
274	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);	388	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
275	return retval;	389	return retval;
276	}	390	}
277		391
278	static unsigned int etp_nready (void)	392	static unsigned int
		393	etp_nready (void)
279	{	394	{
280	unsigned int retval;	395	unsigned int retval;
281		396
282	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);	397	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
283	retval = nready;	398	retval = nready;
284	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);	399	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
285		400
286	return retval;	401	return retval;
287	}	402	}
288		403
289	static unsigned int etp_npending (void)	404	static unsigned int
		405	etp_npending (void)
290	{	406	{
291	unsigned int retval;	407	unsigned int retval;
292		408
293	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);	409	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
294	retval = npending;	410	retval = npending;
295	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);	411	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
296		412
297	return retval;	413	return retval;
298	}	414	}
299		415
300	static unsigned int etp_nthreads (void)	416	static unsigned int
		417	etp_nthreads (void)
301	{	418	{
302	unsigned int retval;	419	unsigned int retval;
303		420
304	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);	421	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
305	retval = started;	422	retval = started;
…		…
319	} etp_reqq;	436	} etp_reqq;
320		437
321	static etp_reqq req_queue;	438	static etp_reqq req_queue;
322	static etp_reqq res_queue;	439	static etp_reqq res_queue;
323		440
		441	static void ecb_noinline ecb_cold
		442	reqq_init (etp_reqq *q)
		443	{
		444	int pri;
		445
		446	for (pri = 0; pri < ETP_NUM_PRI; ++pri)
		447	q->qs[pri] = q->qe[pri] = 0;
		448
		449	q->size = 0;
		450	}
		451
		452	static int ecb_noinline
324	static int reqq_push (etp_reqq *q, ETP_REQ *req)	453	reqq_push (etp_reqq *q, ETP_REQ *req)
325	{	454	{
326	int pri = req->pri;	455	int pri = req->pri;
327	req->next = 0;	456	req->next = 0;
328		457
329	if (q->qe[pri])	458	if (q->qe[pri])
…		…
335	q->qe[pri] = q->qs[pri] = req;	464	q->qe[pri] = q->qs[pri] = req;
336		465
337	return q->size++;	466	return q->size++;
338	}	467	}
339		468
		469	static ETP_REQ * ecb_noinline
340	static ETP_REQ *reqq_shift (etp_reqq *q)	470	reqq_shift (etp_reqq *q)
341	{	471	{
342	int pri;	472	int pri;
343		473
344	if (!q->size)	474	if (!q->size)
345	return 0;	475	return 0;
…		…
360	}	490	}
361		491
362	abort ();	492	abort ();
363	}	493	}
364		494
365	static void etp_atfork_prepare (void)	495	static int ecb_cold
		496	etp_init (void (*want_poll)(void), void (*done_poll)(void))
366	{	497	{
367	X_LOCK (wrklock);	498	X_MUTEX_CREATE (wrklock);
368	X_LOCK (reqlock);	499	X_MUTEX_CREATE (reslock);
369	X_LOCK (reslock);	500	X_MUTEX_CREATE (reqlock);
370	#if !HAVE_PREADWRITE	501	X_COND_CREATE (reqwait);
371	X_LOCK (preadwritelock);
372	#endif
373	}
374		502
375	static void etp_atfork_parent (void)	503	reqq_init (&req_queue);
376	{	504	reqq_init (&res_queue);
377	#if !HAVE_PREADWRITE
378	X_UNLOCK (preadwritelock);
379	#endif
380	X_UNLOCK (reslock);
381	X_UNLOCK (reqlock);
382	X_UNLOCK (wrklock);
383	}
384		505
385	static void etp_atfork_child (void)	506	wrk_first.next =
386	{	507	wrk_first.prev = &wrk_first;
387	ETP_REQ *prv;
388
389	while ((prv = reqq_shift (&req_queue)))
390	ETP_DESTROY (prv);
391
392	while ((prv = reqq_shift (&res_queue)))
393	ETP_DESTROY (prv);
394
395	while (wrk_first.next != &wrk_first)
396	{
397	etp_worker *wrk = wrk_first.next;
398
399	if (wrk->req)
400	ETP_DESTROY (wrk->req);
401
402	etp_worker_clear (wrk);
403	etp_worker_free (wrk);
404	}
405		508
406	started = 0;	509	started = 0;
407	idle = 0;	510	idle = 0;
408	nreqs = 0;	511	nreqs = 0;
409	nready = 0;	512	nready = 0;
410	npending = 0;	513	npending = 0;
411		514
412	etp_atfork_parent ();
413	}
414
415	static void
416	etp_once_init (void)
417	{
418	X_THREAD_ATFORK (etp_atfork_prepare, etp_atfork_parent, etp_atfork_child);
419	}
420
421	static int
422	etp_init (void (*want_poll)(void), void (*done_poll)(void))
423	{
424	static pthread_once_t doinit = PTHREAD_ONCE_INIT;
425
426	pthread_once (&doinit, etp_once_init);
427
428	want_poll_cb = want_poll;	515	want_poll_cb = want_poll;
429	done_poll_cb = done_poll;	516	done_poll_cb = done_poll;
430		517
431	return 0;	518	return 0;
432	}	519	}
433		520
434	X_THREAD_PROC (etp_proc);	521	X_THREAD_PROC (etp_proc);
435		522
		523	static void ecb_cold
436	static void etp_start_thread (void)	524	etp_start_thread (void)
437	{	525	{
438	etp_worker *wrk = calloc (1, sizeof (etp_worker));	526	etp_worker *wrk = calloc (1, sizeof (etp_worker));
439		527
440	/*TODO*/	528	/*TODO*/
441	assert (("unable to allocate worker thread data", wrk));	529	assert (("unable to allocate worker thread data", wrk));
…		…
454	free (wrk);	542	free (wrk);
455		543
456	X_UNLOCK (wrklock);	544	X_UNLOCK (wrklock);
457	}	545	}
458		546
		547	static void
459	static void etp_maybe_start_thread (void)	548	etp_maybe_start_thread (void)
460	{	549	{
461	if (expect_true (etp_nthreads () >= wanted))	550	if (ecb_expect_true (etp_nthreads () >= wanted))
462	return;	551	return;
463		552
464	/* todo: maybe use idle here, but might be less exact */	553	/* todo: maybe use idle here, but might be less exact */
465	if (expect_true (0 <= (int)etp_nthreads () + (int)etp_npending () - (int)etp_nreqs ()))	554	if (ecb_expect_true (0 <= (int)etp_nthreads () + (int)etp_npending () - (int)etp_nreqs ()))
466	return;	555	return;
467		556
468	etp_start_thread ();	557	etp_start_thread ();
469	}	558	}
470		559
		560	static void ecb_cold
471	static void etp_end_thread (void)	561	etp_end_thread (void)
472	{	562	{
473	eio_req *req = calloc (1, sizeof (eio_req));	563	eio_req *req = calloc (1, sizeof (eio_req));
474		564
475	req->type = -1;	565	req->type = -1;
476	req->pri = ETP_PRI_MAX - ETP_PRI_MIN;	566	req->pri = ETP_PRI_MAX - ETP_PRI_MIN;
…		…
483	X_LOCK (wrklock);	573	X_LOCK (wrklock);
484	--started;	574	--started;
485	X_UNLOCK (wrklock);	575	X_UNLOCK (wrklock);
486	}	576	}
487		577
488	static int etp_poll (void)	578	static int
		579	etp_poll (void)
489	{	580	{
490	unsigned int maxreqs;	581	unsigned int maxreqs;
491	unsigned int maxtime;	582	unsigned int maxtime;
492	struct timeval tv_start, tv_now;	583	struct timeval tv_start, tv_now;
493		584
…		…
523		614
524	X_LOCK (reqlock);	615	X_LOCK (reqlock);
525	--nreqs;	616	--nreqs;
526	X_UNLOCK (reqlock);	617	X_UNLOCK (reqlock);
527		618
528	if (expect_false (req->type == EIO_GROUP && req->size))	619	if (ecb_expect_false (req->type == EIO_GROUP && req->size))
529	{	620	{
530	req->int1 = 1; /* mark request as delayed */	621	req->int1 = 1; /* mark request as delayed */
531	continue;	622	continue;
532	}	623	}
533	else	624	else
534	{	625	{
535	int res = ETP_FINISH (req);	626	int res = ETP_FINISH (req);
536	if (expect_false (res))	627	if (ecb_expect_false (res))
537	return res;	628	return res;
538	}	629	}
539		630
540	if (expect_false (maxreqs && !--maxreqs))	631	if (ecb_expect_false (maxreqs && !--maxreqs))
541	break;	632	break;
542		633
543	if (maxtime)	634	if (maxtime)
544	{	635	{
545	gettimeofday (&tv_now, 0);	636	gettimeofday (&tv_now, 0);
…		…
551		642
552	errno = EAGAIN;	643	errno = EAGAIN;
553	return -1;	644	return -1;
554	}	645	}
555		646
		647	static void
556	static void etp_cancel (ETP_REQ *req)	648	etp_cancel (ETP_REQ *req)
557	{	649	{
558	X_LOCK (wrklock);	650	req->cancelled = 1;
559	req->flags |= EIO_FLAG_CANCELLED;
560	X_UNLOCK (wrklock);
561		651
562	eio_grp_cancel (req);	652	eio_grp_cancel (req);
563	}	653	}
564		654
		655	static void
565	static void etp_submit (ETP_REQ *req)	656	etp_submit (ETP_REQ *req)
566	{	657	{
567	req->pri -= ETP_PRI_MIN;	658	req->pri -= ETP_PRI_MIN;
568		659
569	if (expect_false (req->pri < ETP_PRI_MIN - ETP_PRI_MIN)) req->pri = ETP_PRI_MIN - ETP_PRI_MIN;	660	if (ecb_expect_false (req->pri < ETP_PRI_MIN - ETP_PRI_MIN)) req->pri = ETP_PRI_MIN - ETP_PRI_MIN;
570	if (expect_false (req->pri > ETP_PRI_MAX - ETP_PRI_MIN)) req->pri = ETP_PRI_MAX - ETP_PRI_MIN;	661	if (ecb_expect_false (req->pri > ETP_PRI_MAX - ETP_PRI_MIN)) req->pri = ETP_PRI_MAX - ETP_PRI_MIN;
571		662
572	if (expect_false (req->type == EIO_GROUP))	663	if (ecb_expect_false (req->type == EIO_GROUP))
573	{	664	{
574	/* I hope this is worth it :/ */	665	/* I hope this is worth it :/ */
575	X_LOCK (reqlock);	666	X_LOCK (reqlock);
576	++nreqs;	667	++nreqs;
577	X_UNLOCK (reqlock);	668	X_UNLOCK (reqlock);
…		…
596		687
597	etp_maybe_start_thread ();	688	etp_maybe_start_thread ();
598	}	689	}
599	}	690	}
600		691
		692	static void ecb_cold
601	static void etp_set_max_poll_time (double nseconds)	693	etp_set_max_poll_time (double nseconds)
602	{	694	{
603	if (WORDACCESS_UNSAFE) X_LOCK (reslock);	695	if (WORDACCESS_UNSAFE) X_LOCK (reslock);
604	max_poll_time = nseconds * EIO_TICKS;	696	max_poll_time = nseconds * EIO_TICKS;
605	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);	697	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);
606	}	698	}
607		699
		700	static void ecb_cold
608	static void etp_set_max_poll_reqs (unsigned int maxreqs)	701	etp_set_max_poll_reqs (unsigned int maxreqs)
609	{	702	{
610	if (WORDACCESS_UNSAFE) X_LOCK (reslock);	703	if (WORDACCESS_UNSAFE) X_LOCK (reslock);
611	max_poll_reqs = maxreqs;	704	max_poll_reqs = maxreqs;
612	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);	705	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);
613	}	706	}
614		707
		708	static void ecb_cold
615	static void etp_set_max_idle (unsigned int nthreads)	709	etp_set_max_idle (unsigned int nthreads)
616	{	710	{
617	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);	711	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
618	max_idle = nthreads <= 0 ? 1 : nthreads;	712	max_idle = nthreads;
619	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);	713	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
620	}	714	}
621		715
		716	static void ecb_cold
		717	etp_set_idle_timeout (unsigned int seconds)
		718	{
		719	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
		720	idle_timeout = seconds;
		721	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
		722	}
		723
		724	static void ecb_cold
622	static void etp_set_min_parallel (unsigned int nthreads)	725	etp_set_min_parallel (unsigned int nthreads)
623	{	726	{
624	if (wanted < nthreads)	727	if (wanted < nthreads)
625	wanted = nthreads;	728	wanted = nthreads;
626	}	729	}
627		730
		731	static void ecb_cold
628	static void etp_set_max_parallel (unsigned int nthreads)	732	etp_set_max_parallel (unsigned int nthreads)
629	{	733	{
630	if (wanted > nthreads)	734	if (wanted > nthreads)
631	wanted = nthreads;	735	wanted = nthreads;
632		736
633	while (started > wanted)	737	while (started > wanted)
634	etp_end_thread ();	738	etp_end_thread ();
635	}	739	}
636		740
637	/*****************************************************************************/	741	/*****************************************************************************/
638		742
		743	static void
639	static void grp_try_feed (eio_req *grp)	744	grp_try_feed (eio_req *grp)
640	{	745	{
641	while (grp->size < grp->int2 && !EIO_CANCELLED (grp))	746	while (grp->size < grp->int2 && !EIO_CANCELLED (grp))
642	{	747	{
643	grp->flags &= ~EIO_FLAG_GROUPADD;	748	grp->flags &= ~EIO_FLAG_GROUPADD;
644		749
…		…
651	break;	756	break;
652	}	757	}
653	}	758	}
654	}	759	}
655		760
		761	static int
656	static int grp_dec (eio_req *grp)	762	grp_dec (eio_req *grp)
657	{	763	{
658	--grp->size;	764	--grp->size;
659		765
660	/* call feeder, if applicable */	766	/* call feeder, if applicable */
661	grp_try_feed (grp);	767	grp_try_feed (grp);
…		…
665	return eio_finish (grp);	771	return eio_finish (grp);
666	else	772	else
667	return 0;	773	return 0;
668	}	774	}
669		775
		776	static void
670	void eio_destroy (eio_req *req)	777	eio_destroy (eio_req *req)
671	{	778	{
672	if ((req)->flags & EIO_FLAG_PTR1_FREE) free (req->ptr1);	779	if ((req)->flags & EIO_FLAG_PTR1_FREE) free (req->ptr1);
673	if ((req)->flags & EIO_FLAG_PTR2_FREE) free (req->ptr2);	780	if ((req)->flags & EIO_FLAG_PTR2_FREE) free (req->ptr2);
674		781
675	EIO_DESTROY (req);	782	EIO_DESTROY (req);
676	}	783	}
677		784
		785	static int
678	static int eio_finish (eio_req *req)	786	eio_finish (eio_req *req)
679	{	787	{
680	int res = EIO_FINISH (req);	788	int res = EIO_FINISH (req);
681		789
682	if (req->grp)	790	if (req->grp)
683	{	791	{
…		…
691	if (grp->grp_first == req)	799	if (grp->grp_first == req)
692	grp->grp_first = req->grp_next;	800	grp->grp_first = req->grp_next;
693		801
694	res2 = grp_dec (grp);	802	res2 = grp_dec (grp);
695		803
696	if (!res && res2)	804	if (!res)
697	res = res2;	805	res = res2;
698	}	806	}
699		807
700	eio_destroy (req);	808	eio_destroy (req);
701		809
702	return res;	810	return res;
703	}	811	}
704		812
		813	void
705	void eio_grp_cancel (eio_req *grp)	814	eio_grp_cancel (eio_req *grp)
706	{	815	{
707	for (grp = grp->grp_first; grp; grp = grp->grp_next)	816	for (grp = grp->grp_first; grp; grp = grp->grp_next)
708	eio_cancel (grp);	817	eio_cancel (grp);
709	}	818	}
710		819
		820	void
711	void eio_cancel (eio_req *req)	821	eio_cancel (eio_req *req)
712	{	822	{
713	etp_cancel (req);	823	etp_cancel (req);
714	}	824	}
715		825
		826	void
716	void eio_submit (eio_req *req)	827	eio_submit (eio_req *req)
717	{	828	{
718	etp_submit (req);	829	etp_submit (req);
719	}	830	}
720		831
721	unsigned int eio_nreqs (void)	832	unsigned int
		833	eio_nreqs (void)
722	{	834	{
723	return etp_nreqs ();	835	return etp_nreqs ();
724	}	836	}
725		837
726	unsigned int eio_nready (void)	838	unsigned int
		839	eio_nready (void)
727	{	840	{
728	return etp_nready ();	841	return etp_nready ();
729	}	842	}
730		843
731	unsigned int eio_npending (void)	844	unsigned int
		845	eio_npending (void)
732	{	846	{
733	return etp_npending ();	847	return etp_npending ();
734	}	848	}
735		849
736	unsigned int eio_nthreads (void)	850	unsigned int ecb_cold
		851	eio_nthreads (void)
737	{	852	{
738	return etp_nthreads ();	853	return etp_nthreads ();
739	}	854	}
740		855
		856	void ecb_cold
741	void eio_set_max_poll_time (double nseconds)	857	eio_set_max_poll_time (double nseconds)
742	{	858	{
743	etp_set_max_poll_time (nseconds);	859	etp_set_max_poll_time (nseconds);
744	}	860	}
745		861
		862	void ecb_cold
746	void eio_set_max_poll_reqs (unsigned int maxreqs)	863	eio_set_max_poll_reqs (unsigned int maxreqs)
747	{	864	{
748	etp_set_max_poll_reqs (maxreqs);	865	etp_set_max_poll_reqs (maxreqs);
749	}	866	}
750		867
		868	void ecb_cold
751	void eio_set_max_idle (unsigned int nthreads)	869	eio_set_max_idle (unsigned int nthreads)
752	{	870	{
753	etp_set_max_idle (nthreads);	871	etp_set_max_idle (nthreads);
754	}	872	}
755		873
		874	void ecb_cold
		875	eio_set_idle_timeout (unsigned int seconds)
		876	{
		877	etp_set_idle_timeout (seconds);
		878	}
		879
		880	void ecb_cold
756	void eio_set_min_parallel (unsigned int nthreads)	881	eio_set_min_parallel (unsigned int nthreads)
757	{	882	{
758	etp_set_min_parallel (nthreads);	883	etp_set_min_parallel (nthreads);
759	}	884	}
760		885
		886	void ecb_cold
761	void eio_set_max_parallel (unsigned int nthreads)	887	eio_set_max_parallel (unsigned int nthreads)
762	{	888	{
763	etp_set_max_parallel (nthreads);	889	etp_set_max_parallel (nthreads);
764	}	890	}
765		891
766	int eio_poll (void)	892	int eio_poll (void)
…		…
775	# undef pread	901	# undef pread
776	# undef pwrite	902	# undef pwrite
777	# define pread eio__pread	903	# define pread eio__pread
778	# define pwrite eio__pwrite	904	# define pwrite eio__pwrite
779		905
780	static ssize_t	906	static eio_ssize_t
781	eio__pread (int fd, void *buf, size_t count, off_t offset)	907	eio__pread (int fd, void *buf, size_t count, off_t offset)
782	{	908	{
783	ssize_t res;	909	eio_ssize_t res;
784	off_t ooffset;	910	off_t ooffset;
785		911
786	X_LOCK (preadwritelock);	912	X_LOCK (preadwritelock);
787	ooffset = lseek (fd, 0, SEEK_CUR);	913	ooffset = lseek (fd, 0, SEEK_CUR);
788	lseek (fd, offset, SEEK_SET);	914	lseek (fd, offset, SEEK_SET);
…		…
791	X_UNLOCK (preadwritelock);	917	X_UNLOCK (preadwritelock);
792		918
793	return res;	919	return res;
794	}	920	}
795		921
796	static ssize_t	922	static eio_ssize_t
797	eio__pwrite (int fd, void *buf, size_t count, off_t offset)	923	eio__pwrite (int fd, void *buf, size_t count, off_t offset)
798	{	924	{
799	ssize_t res;	925	eio_ssize_t res;
800	off_t ooffset;	926	off_t ooffset;
801		927
802	X_LOCK (preadwritelock);	928	X_LOCK (preadwritelock);
803	ooffset = lseek (fd, 0, SEEK_CUR);	929	ooffset = lseek (fd, 0, SEEK_CUR);
804	lseek (fd, offset, SEEK_SET);	930	lseek (fd, offset, SEEK_SET);
…		…
808		934
809	return res;	935	return res;
810	}	936	}
811	#endif	937	#endif
812		938
813	#ifndef HAVE_FUTIMES	939	#ifndef HAVE_UTIMES
814		940
815	# undef utimes	941	# undef utimes
816	# undef futimes
817	# define utimes(path,times) eio__utimes (path, times)	942	# define utimes(path,times) eio__utimes (path, times)
818	# define futimes(fd,times) eio__futimes (fd, times)
819		943
820	static int	944	static int
821	eio__utimes (const char *filename, const struct timeval times[2])	945	eio__utimes (const char *filename, const struct timeval times[2])
822	{	946	{
823	if (times)	947	if (times)
…		…
831	}	955	}
832	else	956	else
833	return utime (filename, 0);	957	return utime (filename, 0);
834	}	958	}
835		959
		960	#endif
		961
		962	#ifndef HAVE_FUTIMES
		963
		964	# undef futimes
		965	# define futimes(fd,times) eio__futimes (fd, times)
		966
		967	static int
836	static int eio__futimes (int fd, const struct timeval tv[2])	968	eio__futimes (int fd, const struct timeval tv[2])
837	{	969	{
838	errno = ENOSYS;	970	errno = ENOSYS;
839	return -1;	971	return -1;
840	}	972	}
841		973
…		…
844	#if !HAVE_FDATASYNC	976	#if !HAVE_FDATASYNC
845	# undef fdatasync	977	# undef fdatasync
846	# define fdatasync(fd) fsync (fd)	978	# define fdatasync(fd) fsync (fd)
847	#endif	979	#endif
848		980
		981	static int
		982	eio__syncfs (int fd)
		983	{
		984	int res;
		985
		986	#if HAVE_SYS_SYNCFS
		987	res = (int)syscall (__NR_syncfs, (int)(fd));
		988	#else
		989	res = -1;
		990	errno = ENOSYS;
		991	#endif
		992
		993	if (res < 0 && errno == ENOSYS && fd >= 0)
		994	sync ();
		995
		996	return res;
		997	}
		998
849	/* sync_file_range always needs emulation */	999	/* sync_file_range always needs emulation */
850	int	1000	static int
851	eio__sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags)	1001	eio__sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags)
852	{	1002	{
853	#if HAVE_SYNC_FILE_RANGE	1003	#if HAVE_SYNC_FILE_RANGE
854	int res;	1004	int res;
855		1005
…		…
872	/* even though we could play tricks with the flags, it's better to always	1022	/* even though we could play tricks with the flags, it's better to always
873	* call fdatasync, as that matches the expectation of its users best */	1023	* call fdatasync, as that matches the expectation of its users best */
874	return fdatasync (fd);	1024	return fdatasync (fd);
875	}	1025	}
876		1026
		1027	static int
		1028	eio__fallocate (int fd, int mode, off_t offset, size_t len)
		1029	{
		1030	#if HAVE_FALLOCATE
		1031	return fallocate (fd, mode, offset, len);
		1032	#else
		1033	errno = ENOSYS;
		1034	return -1;
		1035	#endif
		1036	}
		1037
877	#if !HAVE_READAHEAD	1038	#if !HAVE_READAHEAD
878	# undef readahead	1039	# undef readahead
879	# define readahead(fd,offset,count) eio__readahead (fd, offset, count, self)	1040	# define readahead(fd,offset,count) eio__readahead (fd, offset, count, self)
880		1041
881	static ssize_t	1042	static eio_ssize_t
882	eio__readahead (int fd, off_t offset, size_t count, etp_worker *self)	1043	eio__readahead (int fd, off_t offset, size_t count, etp_worker *self)
883	{	1044	{
884	size_t todo = count;	1045	size_t todo = count;
885	dBUF;	1046	dBUF;
886		1047
…		…
891	pread (fd, eio_buf, len, offset);	1052	pread (fd, eio_buf, len, offset);
892	offset += len;	1053	offset += len;
893	todo -= len;	1054	todo -= len;
894	}	1055	}
895		1056
		1057	FUBd;
		1058
896	errno = 0;	1059	errno = 0;
897	return count;	1060	return count;
898	}	1061	}
899		1062
900	#endif	1063	#endif
901		1064
902	/* sendfile always needs emulation */	1065	/* sendfile always needs emulation */
903	static ssize_t	1066	static eio_ssize_t
904	eio__sendfile (int ofd, int ifd, off_t offset, size_t count, etp_worker *self)	1067	eio__sendfile (int ofd, int ifd, off_t offset, size_t count)
905	{	1068	{
		1069	eio_ssize_t written = 0;
906	ssize_t res;	1070	eio_ssize_t res;
907		1071
908	if (!count)	1072	if (!count)
909	return 0;	1073	return 0;
910		1074
		1075	for (;;)
		1076	{
		1077	#ifdef __APPLE__
		1078	# undef HAVE_SENDFILE /* broken, as everything on os x */
		1079	#endif
911	#if HAVE_SENDFILE	1080	#if HAVE_SENDFILE
912	# if __linux	1081	# if __linux
		1082	off_t soffset = offset;
913	res = sendfile (ofd, ifd, &offset, count);	1083	res = sendfile (ofd, ifd, &soffset, count);
914		1084
915	# elif __FreeBSD__	1085	# elif __FreeBSD__
916	/*	1086	/*
917	* Of course, the freebsd sendfile is a dire hack with no thoughts	1087	* Of course, the freebsd sendfile is a dire hack with no thoughts
918	* wasted on making it similar to other I/O functions.	1088	* wasted on making it similar to other I/O functions.
919	*/	1089	*/
920	{
921	off_t sbytes;	1090	off_t sbytes;
922	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);	1091	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
923		1092
924	#if 0 /* according to the manpage, this is correct, but broken behaviour */	1093	#if 0 /* according to the manpage, this is correct, but broken behaviour */
925	/* freebsd' sendfile will return 0 on success */	1094	/* freebsd' sendfile will return 0 on success */
926	/* freebsd 8 documents it as only setting *sbytes on EINTR and EAGAIN, but */	1095	/* freebsd 8 documents it as only setting *sbytes on EINTR and EAGAIN, but */
927	/* not on e.g. EIO or EPIPE - sounds broken */	1096	/* not on e.g. EIO or EPIPE - sounds broken */
928	if ((res < 0 && (errno == EAGAIN || errno == EINTR) && sbytes) || res == 0)	1097	if ((res < 0 && (errno == EAGAIN || errno == EINTR) && sbytes) || res == 0)
929	res = sbytes;	1098	res = sbytes;
930	#endif	1099	#endif
931		1100
932	/* according to source inspection, this is correct, and useful behaviour */	1101	/* according to source inspection, this is correct, and useful behaviour */
933	if (sbytes)	1102	if (sbytes)
934	res = sbytes;	1103	res = sbytes;
935	}
936		1104
937	# elif defined (__APPLE__)	1105	# elif defined (__APPLE__)
938
939	{
940	off_t sbytes = count;	1106	off_t sbytes = count;
941	res = sendfile (ifd, ofd, offset, &sbytes, 0, 0);	1107	res = sendfile (ifd, ofd, offset, &sbytes, 0, 0);
942		1108
943	/* according to the manpage, sbytes is always valid */	1109	/* according to the manpage, sbytes is always valid */
944	if (sbytes)	1110	if (sbytes)
945	res = sbytes;	1111	res = sbytes;
946	}
947		1112
948	# elif __hpux	1113	# elif __hpux
949	res = sendfile (ofd, ifd, offset, count, 0, 0);	1114	res = sendfile (ofd, ifd, offset, count, 0, 0);
950		1115
951	# elif __solaris	1116	# elif __solaris
952	{
953	struct sendfilevec vec;	1117	struct sendfilevec vec;
954	size_t sbytes;	1118	size_t sbytes;
955		1119
956	vec.sfv_fd = ifd;	1120	vec.sfv_fd = ifd;
957	vec.sfv_flag = 0;	1121	vec.sfv_flag = 0;
958	vec.sfv_off = offset;	1122	vec.sfv_off = offset;
959	vec.sfv_len = count;	1123	vec.sfv_len = count;
960		1124
961	res = sendfilev (ofd, &vec, 1, &sbytes);	1125	res = sendfilev (ofd, &vec, 1, &sbytes);
962		1126
963	if (res < 0 && sbytes)	1127	if (res < 0 && sbytes)
964	res = sbytes;	1128	res = sbytes;
965	}
966		1129
967	# endif	1130	# endif
968		1131
969	#elif defined (_WIN32)	1132	#elif defined (_WIN32) && 0
970
971	/* does not work, just for documentation of what would need to be done */	1133	/* does not work, just for documentation of what would need to be done */
972	{	1134	/* actually, cannot be done like this, as TransmitFile changes the file offset, */
		1135	/* libeio guarantees that the file offset does not change, and windows */
		1136	/* has no way to get an independent handle to the same file description */
973	HANDLE h = TO_SOCKET (ifd);	1137	HANDLE h = TO_SOCKET (ifd);
974	SetFilePointer (h, offset, 0, FILE_BEGIN);	1138	SetFilePointer (h, offset, 0, FILE_BEGIN);
975	res = TransmitFile (TO_SOCKET (ofd), h, count, 0, 0, 0, 0);	1139	res = TransmitFile (TO_SOCKET (ofd), h, count, 0, 0, 0, 0);
976	}
977		1140
978	#else	1141	#else
979	res = -1;	1142	res = -1;
980	errno = ENOSYS;	1143	errno = ENOSYS;
981	#endif	1144	#endif
982		1145
		1146	/* we assume sendfile can copy at least 128mb in one go */
		1147	if (res <= 128 * 1024 * 1024)
		1148	{
		1149	if (res > 0)
		1150	written += res;
		1151
		1152	if (written)
		1153	return written;
		1154
		1155	break;
		1156	}
		1157	else
		1158	{
		1159	/* if we requested more, then probably the kernel was lazy */
		1160	written += res;
		1161	offset += res;
		1162	count -= res;
		1163
		1164	if (!count)
		1165	return written;
		1166	}
		1167	}
		1168
983	if (res < 0	1169	if (res < 0
984	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK	1170	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
985	/* BSDs */	1171	/* BSDs */
986	#ifdef ENOTSUP /* sigh, if the steenking pile called openbsd would only try to at least compile posix code... */	1172	#ifdef ENOTSUP /* sigh, if the steenking pile called openbsd would only try to at least compile posix code... */
987	|| errno == ENOTSUP	1173	|| errno == ENOTSUP
988	#endif	1174	#endif
		1175	#ifdef EOPNOTSUPP /* windows */
989	|| errno == EOPNOTSUPP /* BSDs */	1176	|| errno == EOPNOTSUPP /* BSDs */
		1177	#endif
990	#if __solaris	1178	#if __solaris
991	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE	1179	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
992	#endif	1180	#endif
993	)	1181	)
994	)	1182	)
…		…
998		1186
999	res = 0;	1187	res = 0;
1000		1188
1001	while (count)	1189	while (count)
1002	{	1190	{
1003	ssize_t cnt;	1191	eio_ssize_t cnt;
1004		1192
1005	cnt = pread (ifd, eio_buf, count > EIO_BUFSIZE ? EIO_BUFSIZE : count, offset);	1193	cnt = pread (ifd, eio_buf, count > EIO_BUFSIZE ? EIO_BUFSIZE : count, offset);
1006		1194
1007	if (cnt <= 0)	1195	if (cnt <= 0)
1008	{	1196	{
…		…
1020		1208
1021	offset += cnt;	1209	offset += cnt;
1022	res += cnt;	1210	res += cnt;
1023	count -= cnt;	1211	count -= cnt;
1024	}	1212	}
		1213
		1214	FUBd;
1025	}	1215	}
1026		1216
1027	return res;	1217	return res;
		1218	}
		1219
		1220	#ifdef PAGESIZE
		1221	# define eio_pagesize() PAGESIZE
		1222	#else
		1223	static intptr_t
		1224	eio_pagesize (void)
		1225	{
		1226	static intptr_t page;
		1227
		1228	if (!page)
		1229	page = sysconf (_SC_PAGESIZE);
		1230
		1231	return page;
		1232	}
		1233	#endif
		1234
		1235	static void
		1236	eio_page_align (void **addr, size_t *length)
		1237	{
		1238	intptr_t mask = eio_pagesize () - 1;
		1239
		1240	/* round down addr */
		1241	intptr_t adj = mask & (intptr_t)*addr;
		1242
		1243	*addr = (void *)((intptr_t)*addr - adj);
		1244	*length += adj;
		1245
		1246	/* round up length */
		1247	*length = (*length + mask) & ~mask;
		1248	}
		1249
		1250	#if !_POSIX_MEMLOCK
		1251	# define eio__mlockall(a) EIO_ENOSYS ()
		1252	#else
		1253
		1254	static int
		1255	eio__mlockall (int flags)
		1256	{
		1257	#if __GLIBC__ == 2 && __GLIBC_MINOR__ <= 7
		1258	extern int mallopt (int, int);
		1259	mallopt (-6, 238); /* http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=473812 */
		1260	#endif
		1261
		1262	if (EIO_MCL_CURRENT != MCL_CURRENT
		1263	|| EIO_MCL_FUTURE != MCL_FUTURE)
		1264	{
		1265	flags = 0
		1266	| (flags & EIO_MCL_CURRENT ? MCL_CURRENT : 0)
		1267	| (flags & EIO_MCL_FUTURE ? MCL_FUTURE : 0);
		1268	}
		1269
		1270	return mlockall (flags);
		1271	}
		1272	#endif
		1273
		1274	#if !_POSIX_MEMLOCK_RANGE
		1275	# define eio__mlock(a,b) EIO_ENOSYS ()
		1276	#else
		1277
		1278	static int
		1279	eio__mlock (void *addr, size_t length)
		1280	{
		1281	eio_page_align (&addr, &length);
		1282
		1283	return mlock (addr, length);
		1284	}
		1285
		1286	#endif
		1287
		1288	#if !(_POSIX_MAPPED_FILES && _POSIX_SYNCHRONIZED_IO)
		1289	# define eio__msync(a,b,c) EIO_ENOSYS ()
		1290	#else
		1291
		1292	static int
		1293	eio__msync (void *mem, size_t len, int flags)
		1294	{
		1295	eio_page_align (&mem, &len);
		1296
		1297	if (EIO_MS_ASYNC != MS_SYNC
		1298	|| EIO_MS_INVALIDATE != MS_INVALIDATE
		1299	|| EIO_MS_SYNC != MS_SYNC)
		1300	{
		1301	flags = 0
		1302	| (flags & EIO_MS_ASYNC ? MS_ASYNC : 0)
		1303	| (flags & EIO_MS_INVALIDATE ? MS_INVALIDATE : 0)
		1304	| (flags & EIO_MS_SYNC ? MS_SYNC : 0);
		1305	}
		1306
		1307	return msync (mem, len, flags);
		1308	}
		1309
		1310	#endif
		1311
		1312	static int
		1313	eio__mtouch (eio_req *req)
		1314	{
		1315	void *mem = req->ptr2;
		1316	size_t len = req->size;
		1317	int flags = req->int1;
		1318
		1319	eio_page_align (&mem, &len);
		1320
		1321	{
		1322	intptr_t addr = (intptr_t)mem;
		1323	intptr_t end = addr + len;
		1324	intptr_t page = eio_pagesize ();
		1325
		1326	if (addr < end)
		1327	if (flags & EIO_MT_MODIFY) /* modify */
		1328	do { *((volatile sig_atomic_t *)addr) |= 0; } while ((addr += page) < len && !EIO_CANCELLED (req));
		1329	else
		1330	do { *((volatile sig_atomic_t *)addr) ; } while ((addr += page) < len && !EIO_CANCELLED (req));
		1331	}
		1332
		1333	return 0;
		1334	}
		1335
		1336	/*****************************************************************************/
		1337	/* requests implemented outside eio_execute, because they are so large */
		1338
		1339	static void
		1340	eio__realpath (eio_req *req, etp_worker *self)
		1341	{
		1342	char *rel = req->ptr1;
		1343	char *res;
		1344	char *tmp1, *tmp2;
		1345	#if SYMLOOP_MAX > 32
		1346	int symlinks = SYMLOOP_MAX;
		1347	#else
		1348	int symlinks = 32;
		1349	#endif
		1350
		1351	req->result = -1;
		1352
		1353	errno = EINVAL;
		1354	if (!rel)
		1355	return;
		1356
		1357	errno = ENOENT;
		1358	if (!*rel)
		1359	return;
		1360
		1361	if (!req->ptr2)
		1362	{
		1363	X_LOCK (wrklock);
		1364	req->flags |= EIO_FLAG_PTR2_FREE;
		1365	X_UNLOCK (wrklock);
		1366	req->ptr2 = malloc (PATH_MAX * 3);
		1367
		1368	errno = ENOMEM;
		1369	if (!req->ptr2)
		1370	return;
		1371	}
		1372
		1373	res = req->ptr2;
		1374	tmp1 = res + PATH_MAX;
		1375	tmp2 = tmp1 + PATH_MAX;
		1376
		1377	#if 0 /* disabled, the musl way to do things is just too racy */
		1378	#if __linux && defined(O_NONBLOCK) && defined(O_NOATIME)
		1379	/* on linux we may be able to ask the kernel */
		1380	{
		1381	int fd = open (rel, O_RDONLY | O_NONBLOCK | O_NOCTTY | O_NOATIME);
		1382
		1383	if (fd >= 0)
		1384	{
		1385	sprintf (tmp1, "/proc/self/fd/%d", fd);
		1386	req->result = readlink (tmp1, res, PATH_MAX);
		1387	close (fd);
		1388
		1389	/* here we should probably stat the open file and the disk file, to make sure they still match */
		1390
		1391	if (req->result > 0)
		1392	goto done;
		1393	}
		1394	else if (errno == ELOOP || errno == ENAMETOOLONG || errno == ENOENT || errno == ENOTDIR || errno == EIO)
		1395	return;
		1396	}
		1397	#endif
		1398	#endif
		1399
		1400	if (*rel != '/')
		1401	{
		1402	if (!getcwd (res, PATH_MAX))
		1403	return;
		1404
		1405	if (res [1]) /* only use if not / */
		1406	res += strlen (res);
		1407	}
		1408
		1409	while (*rel)
		1410	{
		1411	eio_ssize_t len, linklen;
		1412	char *beg = rel;
		1413
		1414	while (*rel && *rel != '/')
		1415	++rel;
		1416
		1417	len = rel - beg;
		1418
		1419	if (!len) /* skip slashes */
		1420	{
		1421	++rel;
		1422	continue;
		1423	}
		1424
		1425	if (beg [0] == '.')
		1426	{
		1427	if (len == 1)
		1428	continue; /* . - nop */
		1429
		1430	if (beg [1] == '.' && len == 2)
		1431	{
		1432	/* .. - back up one component, if possible */
		1433
		1434	while (res != req->ptr2)
		1435	if (*--res == '/')
		1436	break;
		1437
		1438	continue;
		1439	}
		1440	}
		1441
		1442	errno = ENAMETOOLONG;
		1443	if (res + 1 + len + 1 >= tmp1)
		1444	return;
		1445
		1446	/* copy one component */
		1447	*res = '/';
		1448	memcpy (res + 1, beg, len);
		1449
		1450	/* zero-terminate, for readlink */
		1451	res [len + 1] = 0;
		1452
		1453	/* now check if it's a symlink */
		1454	linklen = readlink (req->ptr2, tmp1, PATH_MAX);
		1455
		1456	if (linklen < 0)
		1457	{
		1458	if (errno != EINVAL)
		1459	return;
		1460
		1461	/* it's a normal directory. hopefully */
		1462	res += len + 1;
		1463	}
		1464	else
		1465	{
		1466	/* yay, it was a symlink - build new path in tmp2 */
		1467	int rellen = strlen (rel);
		1468
		1469	errno = ENAMETOOLONG;
		1470	if (linklen + 1 + rellen >= PATH_MAX)
		1471	return;
		1472
		1473	errno = ELOOP;
		1474	if (!--symlinks)
		1475	return;
		1476
		1477	if (*tmp1 == '/')
		1478	res = req->ptr2; /* symlink resolves to an absolute path */
		1479
		1480	/* we need to be careful, as rel might point into tmp2 already */
		1481	memmove (tmp2 + linklen + 1, rel, rellen + 1);
		1482	tmp2 [linklen] = '/';
		1483	memcpy (tmp2, tmp1, linklen);
		1484
		1485	rel = tmp2;
		1486	}
		1487	}
		1488
		1489	/* special case for the lone root path */
		1490	if (res == req->ptr2)
		1491	*res++ = '/';
		1492
		1493	req->result = res - (char *)req->ptr2;
		1494
		1495	done:
		1496	req->ptr2 = realloc (req->ptr2, req->result); /* trade time for space savings */
1028	}	1497	}
1029		1498
1030	static signed char	1499	static signed char
1031	eio_dent_cmp (const eio_dirent *a, const eio_dirent *b)	1500	eio_dent_cmp (const eio_dirent *a, const eio_dirent *b)
1032	{	1501	{
1033	return a->score - b->score ? a->score - b->score /* works because our signed char is always 0..100 */	1502	return a->score - b->score ? a->score - b->score /* works because our signed char is always 0..100 */
1034	: a->inode < b->inode ? -1 : a->inode > b->inode ? 1 : 0;	1503	: a->inode < b->inode ? -1
		1504	: a->inode > b->inode ? 1
		1505	: 0;
1035	}	1506	}
1036		1507
1037	#define EIO_DENT_CMP(i,op,j) eio_dent_cmp (&i, &j) op 0	1508	#define EIO_DENT_CMP(i,op,j) eio_dent_cmp (&i, &j) op 0
1038		1509
1039	#define EIO_SORT_CUTOFF 30 /* quite high, but performs well on many filesystems */	1510	#define EIO_SORT_CUTOFF 30 /* quite high, but performs well on many filesystems */
1040	#define EIO_SORT_FAST 60 /* when to only use insertion sort */	1511	#define EIO_SORT_FAST 60 /* when to only use insertion sort */
1041		1512
1042	static void	1513	static void
1043	eio_dent_radix_sort (eio_dirent *dents, int size, signed char score_bits, ino_t inode_bits)	1514	eio_dent_radix_sort (eio_dirent *dents, int size, signed char score_bits, eio_ino_t inode_bits)
1044	{	1515	{
1045	unsigned char bits [9 + sizeof (ino_t) * 8];	1516	unsigned char bits [9 + sizeof (eio_ino_t) * 8];
1046	unsigned char *bit = bits;	1517	unsigned char *bit = bits;
1047		1518
1048	assert (CHAR_BIT == 8);	1519	assert (CHAR_BIT == 8);
1049	assert (sizeof (eio_dirent) * 8 < 256);	1520	assert (sizeof (eio_dirent) * 8 < 256);
1050	assert (offsetof (eio_dirent, inode)); /* we use 0 as sentinel */	1521	assert (offsetof (eio_dirent, inode)); /* we use bit #0 as sentinel */
1051	assert (offsetof (eio_dirent, score)); /* we use 0 as sentinel */	1522	assert (offsetof (eio_dirent, score)); /* we use bit #0 as sentinel */
1052		1523
1053	if (size <= EIO_SORT_FAST)	1524	if (size <= EIO_SORT_FAST)
1054	return;	1525	return;
1055		1526
1056	/* first prepare an array of bits to test in our radix sort */	1527	/* first prepare an array of bits to test in our radix sort */
1057	/* try to take endianness into account, as well as differences in ino_t sizes */	1528	/* try to take endianness into account, as well as differences in eio_ino_t sizes */
1058	/* inode_bits must contain all inodes ORed together */	1529	/* inode_bits must contain all inodes ORed together */
1059	/* which is used to skip bits that are 0 everywhere, which is very common */	1530	/* which is used to skip bits that are 0 everywhere, which is very common */
1060	{	1531	{
1061	ino_t endianness;	1532	eio_ino_t endianness;
1062	int i, j;	1533	int i, j;
1063		1534
1064	/* we store the byte offset of byte n into byte n of "endianness" */	1535	/* we store the byte offset of byte n into byte n of "endianness" */
1065	for (i = 0; i < sizeof (ino_t); ++i)	1536	for (i = 0; i < sizeof (eio_ino_t); ++i)
1066	((unsigned char *)&endianness)[i] = i;	1537	((unsigned char *)&endianness)[i] = i;
1067		1538
1068	*bit++ = 0;	1539	*bit++ = 0;
1069		1540
1070	for (i = 0; i < sizeof (ino_t); ++i)	1541	for (i = 0; i < sizeof (eio_ino_t); ++i)
1071	{	1542	{
1072	/* shifting off the byte offsets out of "endianness" */	1543	/* shifting off the byte offsets out of "endianness" */
1073	int offs = (offsetof (eio_dirent, inode) + (endianness & 0xff)) * 8;	1544	int offs = (offsetof (eio_dirent, inode) + (endianness & 0xff)) * 8;
1074	endianness >>= 8;	1545	endianness >>= 8;
1075		1546
1076	for (j = 0; j < 8; ++j)	1547	for (j = 0; j < 8; ++j)
1077	if (inode_bits & (((ino_t)1) << (i * 8 + j)))	1548	if (inode_bits & (((eio_ino_t)1) << (i * 8 + j)))
1078	*bit++ = offs + j;	1549	*bit++ = offs + j;
1079	}	1550	}
1080		1551
1081	for (j = 0; j < 8; ++j)	1552	for (j = 0; j < 8; ++j)
1082	if (score_bits & (1 << j))	1553	if (score_bits & (1 << j))
1083	*bit++ = offsetof (eio_dirent, score) * 8 + j;	1554	*bit++ = offsetof (eio_dirent, score) * 8 + j;
1084	}	1555	}
1085		1556
1086	/* now actually do the sorting (a variant of MSD radix sort) */	1557	/* now actually do the sorting (a variant of MSD radix sort) */
1087	{	1558	{
1088	eio_dirent *base_stk [9 + sizeof (ino_t) * 8], *base;	1559	eio_dirent *base_stk [9 + sizeof (eio_ino_t) * 8], *base;
1089	eio_dirent *end_stk [9 + sizeof (ino_t) * 8], *end;	1560	eio_dirent *end_stk [9 + sizeof (eio_ino_t) * 8], *end;
1090	unsigned char *bit_stk [9 + sizeof (ino_t) * 8];	1561	unsigned char *bit_stk [9 + sizeof (eio_ino_t) * 8];
1091	int stk_idx = 0;	1562	int stk_idx = 0;
1092		1563
1093	base_stk [stk_idx] = dents;	1564	base_stk [stk_idx] = dents;
1094	end_stk [stk_idx] = dents + size;	1565	end_stk [stk_idx] = dents + size;
1095	bit_stk [stk_idx] = bit - 1;	1566	bit_stk [stk_idx] = bit - 1;
…		…
1174	}	1645	}
1175	}	1646	}
1176	}	1647	}
1177		1648
1178	static void	1649	static void
1179	eio_dent_sort (eio_dirent *dents, int size, signed char score_bits, ino_t inode_bits)	1650	eio_dent_sort (eio_dirent *dents, int size, signed char score_bits, eio_ino_t inode_bits)
1180	{	1651	{
1181	if (size <= 1)	1652	if (size <= 1)
1182	return; /* our insertion sort relies on size > 0 */	1653	return; /* our insertion sort relies on size > 0 */
1183		1654
1184	/* first we use a radix sort, but only for dirs >= EIO_SORT_FAST */	1655	/* first we use a radix sort, but only for dirs >= EIO_SORT_FAST */
…		…
1192		1663
1193	/* read a full directory */	1664	/* read a full directory */
1194	static void	1665	static void
1195	eio__scandir (eio_req *req, etp_worker *self)	1666	eio__scandir (eio_req *req, etp_worker *self)
1196	{	1667	{
1197	DIR *dirp;
1198	EIO_STRUCT_DIRENT *entp;
1199	char *name, *names;	1668	char *name, *names;
1200	int namesalloc = 4096;	1669	int namesalloc = 4096 - sizeof (void *) * 4;
1201	int namesoffs = 0;	1670	int namesoffs = 0;
1202	int flags = req->int1;	1671	int flags = req->int1;
1203	eio_dirent *dents = 0;	1672	eio_dirent *dents = 0;
1204	int dentalloc = 128;	1673	int dentalloc = 128;
1205	int dentoffs = 0;	1674	int dentoffs = 0;
1206	ino_t inode_bits = 0;	1675	eio_ino_t inode_bits = 0;
		1676	#ifdef _WIN32
		1677	HANDLE dirp;
		1678	WIN32_FIND_DATA entp;
		1679	#else
		1680	DIR *dirp;
		1681	EIO_STRUCT_DIRENT *entp;
		1682	#endif
1207		1683
1208	req->result = -1;	1684	req->result = -1;
1209		1685
1210	if (!(flags & EIO_READDIR_DENTS))	1686	if (!(flags & EIO_READDIR_DENTS))
1211	flags &= ~(EIO_READDIR_DIRS_FIRST | EIO_READDIR_STAT_ORDER);	1687	flags &= ~(EIO_READDIR_DIRS_FIRST | EIO_READDIR_STAT_ORDER);
1212		1688
1213	X_LOCK (wrklock);	1689	#ifdef _WIN32
1214	/* the corresponding closedir is in ETP_WORKER_CLEAR */	1690	{
		1691	int len = strlen ((const char *)req->ptr1);
		1692	char *path = malloc (MAX_PATH);
		1693	const char *fmt;
		1694
		1695	if (!len)
		1696	fmt = "./*";
		1697	else if (((const char *)req->ptr1)[len - 1] == '/' || ((const char *)req->ptr1)[len - 1] == '\\')
		1698	fmt = "%s*";
		1699	else
		1700	fmt = "%s/*";
		1701
		1702	_snprintf (path, MAX_PATH, fmt, (const char *)req->ptr1);
		1703	dirp = FindFirstFile (path, &entp);
		1704	free (path);
		1705
		1706	if (dirp == INVALID_HANDLE_VALUE)
		1707	{
		1708	dirp = 0;
		1709
		1710	/* should steal _dosmaperr */
		1711	switch (GetLastError ())
		1712	{
		1713	case ERROR_FILE_NOT_FOUND:
		1714	req->result = 0;
		1715	break;
		1716
		1717	case ERROR_INVALID_NAME:
		1718	case ERROR_PATH_NOT_FOUND:
		1719	case ERROR_NO_MORE_FILES:
		1720	errno = ENOENT;
		1721	break;
		1722
		1723	case ERROR_NOT_ENOUGH_MEMORY:
		1724	errno = ENOMEM;
		1725	break;
		1726
		1727	default:
		1728	errno = EINVAL;
		1729	break;
		1730	}
		1731	}
		1732	}
		1733	#else
1215	self->dirp = dirp = opendir (req->ptr1);	1734	dirp = opendir (req->ptr1);
		1735	#endif
		1736
		1737	if (req->flags & EIO_FLAG_PTR1_FREE)
		1738	free (req->ptr1);
		1739
1216	req->flags |= EIO_FLAG_PTR1_FREE | EIO_FLAG_PTR2_FREE;	1740	req->flags |= EIO_FLAG_PTR1_FREE | EIO_FLAG_PTR2_FREE;
1217	req->ptr1 = dents = flags ? malloc (dentalloc * sizeof (eio_dirent)) : 0;	1741	req->ptr1 = dents = flags ? malloc (dentalloc * sizeof (eio_dirent)) : 0;
1218	req->ptr2 = names = malloc (namesalloc);	1742	req->ptr2 = names = malloc (namesalloc);
1219	X_UNLOCK (wrklock);
1220		1743
1221	if (dirp && names && (!flags || dents))	1744	if (dirp && names && (!flags || dents))
1222	for (;;)	1745	for (;;)
1223	{	1746	{
		1747	int done;
		1748
		1749	#ifdef _WIN32
		1750	done = !dirp;
		1751	#else
1224	errno = 0;	1752	errno = 0;
1225	entp = readdir (dirp);	1753	entp = readdir (dirp);
		1754	done = !entp;
		1755	#endif
1226		1756
1227	if (!entp)	1757	if (done)
1228	{	1758	{
		1759	#ifndef _WIN32
		1760	int old_errno = errno;
		1761	closedir (dirp);
		1762	errno = old_errno;
		1763
1229	if (errno)	1764	if (errno)
1230	break;	1765	break;
		1766	#endif
1231		1767
1232	/* sort etc. */	1768	/* sort etc. */
1233	req->int1 = flags;	1769	req->int1 = flags;
1234	req->result = dentoffs;	1770	req->result = dentoffs;
1235		1771
1236	if (flags & EIO_READDIR_STAT_ORDER)	1772	if (flags & EIO_READDIR_STAT_ORDER)
1237	eio_dent_sort (dents, dentoffs, 0, inode_bits); /* sort by inode exclusively */	1773	eio_dent_sort (dents, dentoffs, flags & EIO_READDIR_DIRS_FIRST ? 7 : 0, inode_bits);
1238	else if (flags & EIO_READDIR_DIRS_FIRST)	1774	else if (flags & EIO_READDIR_DIRS_FIRST)
1239	if (flags & EIO_READDIR_FOUND_UNKNOWN)	1775	if (flags & EIO_READDIR_FOUND_UNKNOWN)
1240	eio_dent_sort (dents, dentoffs, 7, inode_bits); /* sort by score and inode */	1776	eio_dent_sort (dents, dentoffs, 7, inode_bits); /* sort by score and inode */
1241	else	1777	else
1242	{	1778	{
…		…
1244	eio_dirent *oth = dents + dentoffs;	1780	eio_dirent *oth = dents + dentoffs;
1245	eio_dirent *dir = dents;	1781	eio_dirent *dir = dents;
1246		1782
1247	/* now partition dirs to the front, and non-dirs to the back */	1783	/* now partition dirs to the front, and non-dirs to the back */
1248	/* by walking from both sides and swapping if necessary */	1784	/* by walking from both sides and swapping if necessary */
1249	/* also clear score, so it doesn't influence sorting */
1250	while (oth > dir)	1785	while (oth > dir)
1251	{	1786	{
1252	if (dir->type == EIO_DT_DIR)	1787	if (dir->type == EIO_DT_DIR)
1253	++dir;	1788	++dir;
1254	else if ((--oth)->type == EIO_DT_DIR)	1789	else if ((--oth)->type == EIO_DT_DIR)
…		…
1257		1792
1258	++dir;	1793	++dir;
1259	}	1794	}
1260	}	1795	}
1261		1796
1262	/* now sort the dirs only */	1797	/* now sort the dirs only (dirs all have the same score) */
1263	eio_dent_sort (dents, dir - dents, 0, inode_bits);	1798	eio_dent_sort (dents, dir - dents, 0, inode_bits);
1264	}	1799	}
1265		1800
1266	break;	1801	break;
1267	}	1802	}
1268		1803
1269	/* now add the entry to our list(s) */	1804	/* now add the entry to our list(s) */
1270	name = entp->d_name;	1805	name = D_NAME (entp);
1271		1806
1272	/* skip . and .. entries */	1807	/* skip . and .. entries */
1273	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))	1808	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1274	{	1809	{
1275	int len = D_NAMLEN (entp) + 1;	1810	int len = D_NAMLEN (entp) + 1;
1276		1811
1277	while (expect_false (namesoffs + len > namesalloc))	1812	while (ecb_expect_false (namesoffs + len > namesalloc))
1278	{	1813	{
1279	namesalloc *= 2;	1814	namesalloc *= 2;
1280	X_LOCK (wrklock);
1281	req->ptr2 = names = realloc (names, namesalloc);	1815	req->ptr2 = names = realloc (names, namesalloc);
1282	X_UNLOCK (wrklock);
1283		1816
1284	if (!names)	1817	if (!names)
1285	break;	1818	break;
1286	}	1819	}
1287		1820
…		…
1289		1822
1290	if (dents)	1823	if (dents)
1291	{	1824	{
1292	struct eio_dirent *ent;	1825	struct eio_dirent *ent;
1293		1826
1294	if (expect_false (dentoffs == dentalloc))	1827	if (ecb_expect_false (dentoffs == dentalloc))
1295	{	1828	{
1296	dentalloc *= 2;	1829	dentalloc *= 2;
1297	X_LOCK (wrklock);
1298	req->ptr1 = dents = realloc (dents, dentalloc * sizeof (eio_dirent));	1830	req->ptr1 = dents = realloc (dents, dentalloc * sizeof (eio_dirent));
1299	X_UNLOCK (wrklock);
1300		1831
1301	if (!dents)	1832	if (!dents)
1302	break;	1833	break;
1303	}	1834	}
1304		1835
…		…
1384	if (EIO_CANCELLED (req))	1915	if (EIO_CANCELLED (req))
1385	{	1916	{
1386	errno = ECANCELED;	1917	errno = ECANCELED;
1387	break;	1918	break;
1388	}	1919	}
		1920
		1921	#ifdef _WIN32
		1922	if (!FindNextFile (dirp, &entp))
		1923	{
		1924	FindClose (dirp);
		1925	dirp = 0;
		1926	}
		1927	#endif
1389	}	1928	}
1390	}
1391
1392	#if !(_POSIX_MAPPED_FILES && _POSIX_SYNCHRONIZED_IO)
1393	# define eio__msync(a,b,c) ((errno = ENOSYS), -1)
1394	#else
1395
1396	int
1397	eio__msync (void *mem, size_t len, int flags)
1398	{
1399	if (EIO_MS_ASYNC != MS_SYNC
1400	|| EIO_MS_INVALIDATE != MS_INVALIDATE
1401	|| EIO_MS_SYNC != MS_SYNC)
1402	{
1403	flags = 0
1404	| (flags & EIO_MS_ASYNC ? MS_ASYNC : 0)
1405	| (flags & EIO_MS_INVALIDATE ? MS_INVALIDATE : 0)
1406	| (flags & EIO_MS_SYNC ? MS_SYNC : 0);
1407	}
1408
1409	return msync (mem, len, flags);
1410	}
1411
1412	#endif
1413
1414	int
1415	eio__mtouch (void *mem, size_t len, int flags)
1416	{
1417	intptr_t addr = (intptr_t)mem;
1418	intptr_t end = addr + len;
1419	#ifdef PAGESIZE
1420	const intptr_t page = PAGESIZE;
1421	#else
1422	static intptr_t page;
1423
1424	if (!page)
1425	page = sysconf (_SC_PAGESIZE);
1426	#endif
1427
1428	/* round down to start of page, although this is probably useless */
1429	addr &= ~(page - 1); /* assume page size is always a power of two */
1430
1431	if (addr < end)
1432	if (flags & EIO_MT_MODIFY) /* modify */
1433	do { *((volatile sig_atomic_t *)addr) |= 0; } while ((addr += page) < len);
1434	else
1435	do { *((volatile sig_atomic_t *)addr) ; } while ((addr += page) < len);
1436
1437	return 0;
1438	}	1929	}
1439		1930
1440	/*****************************************************************************/	1931	/*****************************************************************************/
1441		1932
1442	#define ALLOC(len) \	1933	#define ALLOC(len) \
…		…
1458	{	1949	{
1459	ETP_REQ *req;	1950	ETP_REQ *req;
1460	struct timespec ts;	1951	struct timespec ts;
1461	etp_worker *self = (etp_worker *)thr_arg;	1952	etp_worker *self = (etp_worker *)thr_arg;
1462		1953
		1954	#if HAVE_PRCTL_SET_NAME
		1955	prctl (PR_SET_NAME, (unsigned long)"eio_thread", 0, 0, 0);
		1956	#endif
		1957
1463	/* try to distribute timeouts somewhat randomly */	1958	/* try to distribute timeouts somewhat evenly */
1464	ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL);	1959	ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL);
1465		1960
1466	for (;;)	1961	for (;;)
1467	{	1962	{
		1963	ts.tv_sec = 0;
		1964
1468	X_LOCK (reqlock);	1965	X_LOCK (reqlock);
1469		1966
1470	for (;;)	1967	for (;;)
1471	{	1968	{
1472	self->req = req = reqq_shift (&req_queue);	1969	self->req = req = reqq_shift (&req_queue);
1473		1970
1474	if (req)	1971	if (req)
1475	break;	1972	break;
1476		1973
		1974	if (ts.tv_sec == 1) /* no request, but timeout detected, let's quit */
		1975	{
		1976	X_UNLOCK (reqlock);
		1977	X_LOCK (wrklock);
		1978	--started;
		1979	X_UNLOCK (wrklock);
		1980	goto quit;
		1981	}
		1982
1477	++idle;	1983	++idle;
1478		1984
1479	ts.tv_sec = time (0) + IDLE_TIMEOUT;	1985	if (idle <= max_idle)
1480	if (X_COND_TIMEDWAIT (reqwait, reqlock, ts) == ETIMEDOUT)	1986	/* we are allowed to idle, so do so without any timeout */
		1987	X_COND_WAIT (reqwait, reqlock);
		1988	else
1481	{	1989	{
1482	if (idle > max_idle)	1990	/* initialise timeout once */
1483	{	1991	if (!ts.tv_sec)
1484	--idle;	1992	ts.tv_sec = time (0) + idle_timeout;
1485	X_UNLOCK (reqlock);
1486	X_LOCK (wrklock);
1487	--started;
1488	X_UNLOCK (wrklock);
1489	goto quit;
1490	}
1491		1993
1492	/* we are allowed to idle, so do so without any timeout */
1493	X_COND_WAIT (reqwait, reqlock);	1994	if (X_COND_TIMEDWAIT (reqwait, reqlock, ts) == ETIMEDOUT)
		1995	ts.tv_sec = 1; /* assuming this is not a value computed above.,.. */
1494	}	1996	}
1495		1997
1496	--idle;	1998	--idle;
1497	}	1999	}
1498		2000
…		…
1501	X_UNLOCK (reqlock);	2003	X_UNLOCK (reqlock);
1502		2004
1503	if (req->type < 0)	2005	if (req->type < 0)
1504	goto quit;	2006	goto quit;
1505		2007
1506	if (!EIO_CANCELLED (req))
1507	ETP_EXECUTE (self, req);	2008	ETP_EXECUTE (self, req);
1508		2009
1509	X_LOCK (reslock);	2010	X_LOCK (reslock);
1510		2011
1511	++npending;	2012	++npending;
1512		2013
…		…
1527	return 0;	2028	return 0;
1528	}	2029	}
1529		2030
1530	/*****************************************************************************/	2031	/*****************************************************************************/
1531		2032
		2033	int ecb_cold
1532	int eio_init (void (*want_poll)(void), void (*done_poll)(void))	2034	eio_init (void (*want_poll)(void), void (*done_poll)(void))
1533	{	2035	{
		2036	#if !HAVE_PREADWRITE
		2037	X_MUTEX_CREATE (preadwritelock);
		2038	#endif
		2039
1534	return etp_init (want_poll, done_poll);	2040	return etp_init (want_poll, done_poll);
1535	}	2041	}
1536		2042
		2043	ecb_inline void
1537	static void eio_api_destroy (eio_req *req)	2044	eio_api_destroy (eio_req *req)
1538	{	2045	{
1539	free (req);	2046	free (req);
1540	}	2047	}
1541		2048
1542	#define REQ(rtype) \	2049	#define REQ(rtype) \
…		…
1561	{ \	2068	{ \
1562	eio_api_destroy (req); \	2069	eio_api_destroy (req); \
1563	return 0; \	2070	return 0; \
1564	}	2071	}
1565		2072
		2073	static void
1566	static void eio_execute (etp_worker *self, eio_req *req)	2074	eio_execute (etp_worker *self, eio_req *req)
1567	{	2075	{
1568	errno = 0;	2076	if (ecb_expect_false (EIO_CANCELLED (req)))
		2077	{
		2078	req->result = -1;
		2079	req->errorno = ECANCELED;
		2080	return;
		2081	}
1569		2082
1570	switch (req->type)	2083	switch (req->type)
1571	{	2084	{
1572	case EIO_READ: ALLOC (req->size);	2085	case EIO_READ: ALLOC (req->size);
1573	req->result = req->offs >= 0	2086	req->result = req->offs >= 0
…		…
1576	case EIO_WRITE: req->result = req->offs >= 0	2089	case EIO_WRITE: req->result = req->offs >= 0
1577	? pwrite (req->int1, req->ptr2, req->size, req->offs)	2090	? pwrite (req->int1, req->ptr2, req->size, req->offs)
1578	: write (req->int1, req->ptr2, req->size); break;	2091	: write (req->int1, req->ptr2, req->size); break;
1579		2092
1580	case EIO_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;	2093	case EIO_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1581	case EIO_SENDFILE: req->result = eio__sendfile (req->int1, req->int2, req->offs, req->size, self); break;	2094	case EIO_SENDFILE: req->result = eio__sendfile (req->int1, req->int2, req->offs, req->size); break;
1582		2095
1583	case EIO_STAT: ALLOC (sizeof (EIO_STRUCT_STAT));	2096	case EIO_STAT: ALLOC (sizeof (EIO_STRUCT_STAT));
1584	req->result = stat (req->ptr1, (EIO_STRUCT_STAT *)req->ptr2); break;	2097	req->result = stat (req->ptr1, (EIO_STRUCT_STAT *)req->ptr2); break;
1585	case EIO_LSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));	2098	case EIO_LSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));
1586	req->result = lstat (req->ptr1, (EIO_STRUCT_STAT *)req->ptr2); break;	2099	req->result = lstat (req->ptr1, (EIO_STRUCT_STAT *)req->ptr2); break;
…		…
1606	case EIO_RMDIR: req->result = rmdir (req->ptr1); break;	2119	case EIO_RMDIR: req->result = rmdir (req->ptr1); break;
1607	case EIO_MKDIR: req->result = mkdir (req->ptr1, (mode_t)req->int2); break;	2120	case EIO_MKDIR: req->result = mkdir (req->ptr1, (mode_t)req->int2); break;
1608	case EIO_RENAME: req->result = rename (req->ptr1, req->ptr2); break;	2121	case EIO_RENAME: req->result = rename (req->ptr1, req->ptr2); break;
1609	case EIO_LINK: req->result = link (req->ptr1, req->ptr2); break;	2122	case EIO_LINK: req->result = link (req->ptr1, req->ptr2); break;
1610	case EIO_SYMLINK: req->result = symlink (req->ptr1, req->ptr2); break;	2123	case EIO_SYMLINK: req->result = symlink (req->ptr1, req->ptr2); break;
1611	case EIO_MKNOD: req->result = mknod (req->ptr1, (mode_t)req->int2, (dev_t)req->int3); break;	2124	case EIO_MKNOD: req->result = mknod (req->ptr1, (mode_t)req->int2, (dev_t)req->offs); break;
1612		2125
		2126	case EIO_REALPATH: eio__realpath (req, self); break;
		2127
1613	case EIO_READLINK: ALLOC (NAME_MAX);	2128	case EIO_READLINK: ALLOC (PATH_MAX);
1614	req->result = readlink (req->ptr1, req->ptr2, NAME_MAX); break;	2129	req->result = readlink (req->ptr1, req->ptr2, PATH_MAX); break;
1615		2130
1616	case EIO_SYNC: req->result = 0; sync (); break;	2131	case EIO_SYNC: req->result = 0; sync (); break;
1617	case EIO_FSYNC: req->result = fsync (req->int1); break;	2132	case EIO_FSYNC: req->result = fsync (req->int1); break;
1618	case EIO_FDATASYNC: req->result = fdatasync (req->int1); break;	2133	case EIO_FDATASYNC: req->result = fdatasync (req->int1); break;
		2134	case EIO_SYNCFS: req->result = eio__syncfs (req->int1); break;
		2135	case EIO_SYNC_FILE_RANGE: req->result = eio__sync_file_range (req->int1, req->offs, req->size, req->int2); break;
1619	case EIO_MSYNC: req->result = eio__msync (req->ptr2, req->size, req->int1); break;	2136	case EIO_MSYNC: req->result = eio__msync (req->ptr2, req->size, req->int1); break;
		2137	case EIO_MTOUCH: req->result = eio__mtouch (req); break;
1620	case EIO_MTOUCH: req->result = eio__mtouch (req->ptr2, req->size, req->int1); break;	2138	case EIO_MLOCK: req->result = eio__mlock (req->ptr2, req->size); break;
1621	case EIO_SYNC_FILE_RANGE: req->result = eio__sync_file_range (req->int1, req->offs, req->size, req->int2); break;	2139	case EIO_MLOCKALL: req->result = eio__mlockall (req->int1); break;
		2140	case EIO_FALLOCATE: req->result = eio__fallocate (req->int1, req->int2, req->offs, req->size); break;
1622		2141
1623	case EIO_READDIR: eio__scandir (req, self); break;	2142	case EIO_READDIR: eio__scandir (req, self); break;
1624		2143
1625	case EIO_BUSY:	2144	case EIO_BUSY:
1626	#ifdef _WIN32	2145	#ifdef _WIN32
1627	Sleep (req->nv1 * 1000.);	2146	Sleep (req->nv1 * 1e3);
1628	#else	2147	#else
1629	{	2148	{
1630	struct timeval tv;	2149	struct timeval tv;
1631		2150
1632	tv.tv_sec = req->nv1;	2151	tv.tv_sec = req->nv1;
1633	tv.tv_usec = (req->nv1 - tv.tv_sec) * 1000000.;	2152	tv.tv_usec = (req->nv1 - tv.tv_sec) * 1e6;
1634		2153
1635	req->result = select (0, 0, 0, 0, &tv);	2154	req->result = select (0, 0, 0, 0, &tv);
1636	}	2155	}
1637	#endif	2156	#endif
1638	break;	2157	break;
…		…
1653	times = tv;	2172	times = tv;
1654	}	2173	}
1655	else	2174	else
1656	times = 0;	2175	times = 0;
1657		2176
1658
1659	req->result = req->type == EIO_FUTIME	2177	req->result = req->type == EIO_FUTIME
1660	? futimes (req->int1, times)	2178	? futimes (req->int1, times)
1661	: utimes (req->ptr1, times);	2179	: utimes (req->ptr1, times);
1662	}	2180	}
1663	break;	2181	break;
…		…
1668	case EIO_NOP:	2186	case EIO_NOP:
1669	req->result = 0;	2187	req->result = 0;
1670	break;	2188	break;
1671		2189
1672	case EIO_CUSTOM:	2190	case EIO_CUSTOM:
1673	((void (*)(eio_req *))req->feed) (req);	2191	req->feed (req);
1674	break;	2192	break;
1675		2193
1676	default:	2194	default:
		2195	errno = ENOSYS;
1677	req->result = -1;	2196	req->result = -1;
1678	break;	2197	break;
1679	}	2198	}
1680		2199
1681	req->errorno = errno;	2200	req->errorno = errno;
…		…
1706	eio_req *eio_msync (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data)	2225	eio_req *eio_msync (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data)
1707	{	2226	{
1708	REQ (EIO_MSYNC); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND;	2227	REQ (EIO_MSYNC); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND;
1709	}	2228	}
1710		2229
		2230	eio_req *eio_fdatasync (int fd, int pri, eio_cb cb, void *data)
		2231	{
		2232	REQ (EIO_FDATASYNC); req->int1 = fd; SEND;
		2233	}
		2234
		2235	eio_req *eio_syncfs (int fd, int pri, eio_cb cb, void *data)
		2236	{
		2237	REQ (EIO_SYNCFS); req->int1 = fd; SEND;
		2238	}
		2239
		2240	eio_req *eio_sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags, int pri, eio_cb cb, void *data)
		2241	{
		2242	REQ (EIO_SYNC_FILE_RANGE); req->int1 = fd; req->offs = offset; req->size = nbytes; req->int2 = flags; SEND;
		2243	}
		2244
1711	eio_req *eio_mtouch (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data)	2245	eio_req *eio_mtouch (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data)
1712	{	2246	{
1713	REQ (EIO_MTOUCH); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND;	2247	REQ (EIO_MTOUCH); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND;
1714	}	2248	}
1715		2249
1716	eio_req *eio_sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags, int pri, eio_cb cb, void *data)	2250	eio_req *eio_mlock (void *addr, size_t length, int pri, eio_cb cb, void *data)
1717	{	2251	{
1718	REQ (EIO_SYNC_FILE_RANGE); req->int1 = fd; req->offs = offset; req->size = nbytes; req->int2 = flags; SEND;	2252	REQ (EIO_MLOCK); req->ptr2 = addr; req->size = length; SEND;
1719	}	2253	}
1720		2254
1721	eio_req *eio_fdatasync (int fd, int pri, eio_cb cb, void *data)	2255	eio_req *eio_mlockall (int flags, int pri, eio_cb cb, void *data)
1722	{	2256	{
1723	REQ (EIO_FDATASYNC); req->int1 = fd; SEND;	2257	REQ (EIO_MLOCKALL); req->int1 = flags; SEND;
		2258	}
		2259
		2260	eio_req *eio_fallocate (int fd, int mode, off_t offset, size_t len, int pri, eio_cb cb, void *data)
		2261	{
		2262	REQ (EIO_FALLOCATE); req->int1 = fd; req->int2 = mode; req->offs = offset; req->size = len; SEND;
1724	}	2263	}
1725		2264
1726	eio_req *eio_close (int fd, int pri, eio_cb cb, void *data)	2265	eio_req *eio_close (int fd, int pri, eio_cb cb, void *data)
1727	{	2266	{
1728	REQ (EIO_CLOSE); req->int1 = fd; SEND;	2267	REQ (EIO_CLOSE); req->int1 = fd; SEND;
…		…
1766	eio_req *eio_fchmod (int fd, mode_t mode, int pri, eio_cb cb, void *data)	2305	eio_req *eio_fchmod (int fd, mode_t mode, int pri, eio_cb cb, void *data)
1767	{	2306	{
1768	REQ (EIO_FCHMOD); req->int1 = fd; req->int2 = (long)mode; SEND;	2307	REQ (EIO_FCHMOD); req->int1 = fd; req->int2 = (long)mode; SEND;
1769	}	2308	}
1770		2309
1771	eio_req *eio_fchown (int fd, uid_t uid, gid_t gid, int pri, eio_cb cb, void *data)	2310	eio_req *eio_fchown (int fd, eio_uid_t uid, eio_gid_t gid, int pri, eio_cb cb, void *data)
1772	{	2311	{
1773	REQ (EIO_FCHOWN); req->int1 = fd; req->int2 = (long)uid; req->int3 = (long)gid; SEND;	2312	REQ (EIO_FCHOWN); req->int1 = fd; req->int2 = (long)uid; req->int3 = (long)gid; SEND;
1774	}	2313	}
1775		2314
1776	eio_req *eio_dup2 (int fd, int fd2, int pri, eio_cb cb, void *data)	2315	eio_req *eio_dup2 (int fd, int fd2, int pri, eio_cb cb, void *data)
…		…
1796	eio_req *eio_truncate (const char *path, off_t offset, int pri, eio_cb cb, void *data)	2335	eio_req *eio_truncate (const char *path, off_t offset, int pri, eio_cb cb, void *data)
1797	{	2336	{
1798	REQ (EIO_TRUNCATE); PATH; req->offs = offset; SEND;	2337	REQ (EIO_TRUNCATE); PATH; req->offs = offset; SEND;
1799	}	2338	}
1800		2339
1801	eio_req *eio_chown (const char *path, uid_t uid, gid_t gid, int pri, eio_cb cb, void *data)	2340	eio_req *eio_chown (const char *path, eio_uid_t uid, eio_gid_t gid, int pri, eio_cb cb, void *data)
1802	{	2341	{
1803	REQ (EIO_CHOWN); PATH; req->int2 = (long)uid; req->int3 = (long)gid; SEND;	2342	REQ (EIO_CHOWN); PATH; req->int2 = (long)uid; req->int3 = (long)gid; SEND;
1804	}	2343	}
1805		2344
1806	eio_req *eio_chmod (const char *path, mode_t mode, int pri, eio_cb cb, void *data)	2345	eio_req *eio_chmod (const char *path, mode_t mode, int pri, eio_cb cb, void *data)
…		…
1822	eio_req *eio_readlink (const char *path, int pri, eio_cb cb, void *data)	2361	eio_req *eio_readlink (const char *path, int pri, eio_cb cb, void *data)
1823	{	2362	{
1824	return eio__1path (EIO_READLINK, path, pri, cb, data);	2363	return eio__1path (EIO_READLINK, path, pri, cb, data);
1825	}	2364	}
1826		2365
		2366	eio_req *eio_realpath (const char *path, int pri, eio_cb cb, void *data)
		2367	{
		2368	return eio__1path (EIO_REALPATH, path, pri, cb, data);
		2369	}
		2370
1827	eio_req *eio_stat (const char *path, int pri, eio_cb cb, void *data)	2371	eio_req *eio_stat (const char *path, int pri, eio_cb cb, void *data)
1828	{	2372	{
1829	return eio__1path (EIO_STAT, path, pri, cb, data);	2373	return eio__1path (EIO_STAT, path, pri, cb, data);
1830	}	2374	}
1831		2375
…		…
1854	REQ (EIO_READDIR); PATH; req->int1 = flags; SEND;	2398	REQ (EIO_READDIR); PATH; req->int1 = flags; SEND;
1855	}	2399	}
1856		2400
1857	eio_req *eio_mknod (const char *path, mode_t mode, dev_t dev, int pri, eio_cb cb, void *data)	2401	eio_req *eio_mknod (const char *path, mode_t mode, dev_t dev, int pri, eio_cb cb, void *data)
1858	{	2402	{
1859	REQ (EIO_MKNOD); PATH; req->int2 = (long)mode; req->int3 = (long)dev; SEND;	2403	REQ (EIO_MKNOD); PATH; req->int2 = (long)mode; req->offs = (off_t)dev; SEND;
1860	}	2404	}
1861		2405
1862	static eio_req *	2406	static eio_req *
1863	eio__2path (int type, const char *path, const char *new_path, int pri, eio_cb cb, void *data)	2407	eio__2path (int type, const char *path, const char *new_path, int pri, eio_cb cb, void *data)
1864	{	2408	{
…		…
1888	eio_req *eio_rename (const char *path, const char *new_path, int pri, eio_cb cb, void *data)	2432	eio_req *eio_rename (const char *path, const char *new_path, int pri, eio_cb cb, void *data)
1889	{	2433	{
1890	return eio__2path (EIO_RENAME, path, new_path, pri, cb, data);	2434	return eio__2path (EIO_RENAME, path, new_path, pri, cb, data);
1891	}	2435	}
1892		2436
1893	eio_req *eio_custom (eio_cb execute, int pri, eio_cb cb, void *data)	2437	eio_req *eio_custom (void (*execute)(eio_req *), int pri, eio_cb cb, void *data)
1894	{	2438	{
1895	REQ (EIO_CUSTOM); req->feed = (void (*)(eio_req *))execute; SEND;	2439	REQ (EIO_CUSTOM); req->feed = execute; SEND;
1896	}	2440	}
1897		2441
1898	#endif	2442	#endif
1899		2443
1900	eio_req *eio_grp (eio_cb cb, void *data)	2444	eio_req *eio_grp (eio_cb cb, void *data)
…		…
1909	#undef SEND	2453	#undef SEND
1910		2454
1911	/*****************************************************************************/	2455	/*****************************************************************************/
1912	/* grp functions */	2456	/* grp functions */
1913		2457
		2458	void
1914	void eio_grp_feed (eio_req *grp, void (*feed)(eio_req *req), int limit)	2459	eio_grp_feed (eio_req *grp, void (*feed)(eio_req *req), int limit)
1915	{	2460	{
1916	grp->int2 = limit;	2461	grp->int2 = limit;
1917	grp->feed = feed;	2462	grp->feed = feed;
1918		2463
1919	grp_try_feed (grp);	2464	grp_try_feed (grp);
1920	}	2465	}
1921		2466
		2467	void
1922	void eio_grp_limit (eio_req *grp, int limit)	2468	eio_grp_limit (eio_req *grp, int limit)
1923	{	2469	{
1924	grp->int2 = limit;	2470	grp->int2 = limit;
1925		2471
1926	grp_try_feed (grp);	2472	grp_try_feed (grp);
1927	}	2473	}
1928		2474
		2475	void
1929	void eio_grp_add (eio_req *grp, eio_req *req)	2476	eio_grp_add (eio_req *grp, eio_req *req)
1930	{	2477	{
1931	assert (("cannot add requests to IO::AIO::GRP after the group finished", grp->int1 != 2));	2478	assert (("cannot add requests to IO::AIO::GRP after the group finished", grp->int1 != 2));
1932		2479
1933	grp->flags |= EIO_FLAG_GROUPADD;	2480	grp->flags |= EIO_FLAG_GROUPADD;
1934		2481
…		…
1945	}	2492	}
1946		2493
1947	/*****************************************************************************/	2494	/*****************************************************************************/
1948	/* misc garbage */	2495	/* misc garbage */
1949		2496
		2497	eio_ssize_t
1950	ssize_t eio_sendfile_sync (int ofd, int ifd, off_t offset, size_t count)	2498	eio_sendfile_sync (int ofd, int ifd, off_t offset, size_t count)
1951	{	2499	{
1952	etp_worker wrk;
1953	ssize_t ret;
1954
1955	wrk.dbuf = 0;
1956
1957	ret = eio__sendfile (ofd, ifd, offset, count, &wrk);	2500	return eio__sendfile (ofd, ifd, offset, count);
1958
1959	if (wrk.dbuf)
1960	free (wrk.dbuf);
1961
1962	return ret;
1963	}	2501	}
1964		2502

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