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Comparing cvsroot/libeio/eio.c (file contents):
Revision 1.52 by root, Fri Jan 8 09:29:56 2010 UTC vs.
Revision 1.98 by root, Sun Jul 24 05:53:34 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	/* we could even stat and see if it exists */
		135	static int
		136	symlink (const char *old, const char *neu)
		137	{
		138	#if WINVER >= 0x0600
		139	if (CreateSymbolicLink (neu, old, 1))
		140	return 0;
		141
		142	if (CreateSymbolicLink (neu, old, 0))
		143	return 0;
		144	#endif
		145
		146	return EIO_ERRNO (ENOENT, -1);
		147	}
		148
		149	/* POSIX API only */
		150	#define CreateHardLink(neu,old,flags) 0
		151	#define CreateSymbolicLink(neu,old,flags) 0
		152
		153	struct statvfs
		154	{
		155	int dummy;
		156	};
		157
		158	#define DT_DIR EIO_DT_DIR
		159	#define DT_REG EIO_DT_REG
		160	#define D_NAME(entp) entp.cFileName
		161	#define D_TYPE(entp) (entp.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY ? DT_DIR : DT_REG)
		162
74	#else	163	#else
75		164
76	# include "config.h"
77	# include <sys/time.h>	165	#include <sys/time.h>
78	# include <sys/select.h>	166	#include <sys/select.h>
79	# include <sys/mman.h>	167	#include <sys/statvfs.h>
80	# include <unistd.h>	168	#include <unistd.h>
		169	#include <signal.h>
		170	#include <dirent.h>
		171
		172	#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
		173	#include <sys/mman.h>
		174	#endif
		175
		176	#define D_NAME(entp) entp->d_name
		177
		178	/* POSIX_SOURCE is useless on bsd's, and XOPEN_SOURCE is unreliable there, too */
		179	#if __FreeBSD__ || defined __NetBSD__ || defined __OpenBSD__
		180	#define _DIRENT_HAVE_D_TYPE /* sigh */
		181	#define D_INO(de) (de)->d_fileno
		182	#define D_NAMLEN(de) (de)->d_namlen
		183	#elif __linux || defined d_ino || _XOPEN_SOURCE >= 600
		184	#define D_INO(de) (de)->d_ino
		185	#endif
		186
		187	#ifdef _D_EXACT_NAMLEN
		188	#undef D_NAMLEN
		189	#define D_NAMLEN(de) _D_EXACT_NAMLEN (de)
		190	#endif
		191
		192	#ifdef _DIRENT_HAVE_D_TYPE
		193	#define D_TYPE(de) (de)->d_type
		194	#endif
		195
		196	#ifndef EIO_STRUCT_DIRENT
		197	#define EIO_STRUCT_DIRENT struct dirent
		198	#endif
		199
		200	#endif
		201
		202	#if HAVE_UTIMES
81	# include <utime.h>	203	# 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	204	#endif
93		205
94	#ifdef _D_EXACT_NAMLEN	206	#if HAVE_SYS_SYSCALL_H
95	# undef D_NAMLEN	207	# 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	208	#endif
102		209
103	# ifndef EIO_STRUCT_DIRENT	210	#if HAVE_SYS_PRCTL_H
104	# define EIO_STRUCT_DIRENT struct dirent	211	# include <sys/prctl.h>
105	# endif
106
107	#endif	212	#endif
108		213
109	#if HAVE_SENDFILE	214	#if HAVE_SENDFILE
110	# if __linux	215	# if __linux
111	# include <sys/sendfile.h>	216	# include <sys/sendfile.h>
…		…
126	#endif	231	#endif
127	#ifndef D_INO	232	#ifndef D_INO
128	# define D_INO(de) 0	233	# define D_INO(de) 0
129	#endif	234	#endif
130	#ifndef D_NAMLEN	235	#ifndef D_NAMLEN
131	# define D_NAMLEN(de) strlen ((de)->d_name)	236	# define D_NAMLEN(entp) strlen (D_NAME (entp))
132	#endif	237	#endif
133
134	/* number of seconds after which an idle threads exit */
135	#define IDLE_TIMEOUT 10
136		238
137	/* used for struct dirent, AIX doesn't provide it */	239	/* used for struct dirent, AIX doesn't provide it */
138	#ifndef NAME_MAX	240	#ifndef NAME_MAX
139	# define NAME_MAX 4096	241	# define NAME_MAX 4096
140	#endif	242	#endif
141		243
		244	/* used for readlink etc. */
		245	#ifndef PATH_MAX
		246	# define PATH_MAX 4096
		247	#endif
		248
142	/* buffer size for various temporary buffers */	249	/* buffer size for various temporary buffers */
143	#define EIO_BUFSIZE 65536	250	#define EIO_BUFSIZE 65536
144		251
145	#define dBUF \	252	#define dBUF \
146	char *eio_buf; \
147	ETP_WORKER_LOCK (self); \
148	self->dbuf = eio_buf = malloc (EIO_BUFSIZE); \	253	char *eio_buf = malloc (EIO_BUFSIZE); \
149	ETP_WORKER_UNLOCK (self); \
150	errno = ENOMEM; \	254	errno = ENOMEM; \
151	if (!eio_buf) \	255	if (!eio_buf) \
152	return -1;	256	return -1
		257
		258	#define FUBd \
		259	free (eio_buf)
153		260
154	#define EIO_TICKS ((1000000 + 1023) >> 10)	261	#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		262
169	#define ETP_PRI_MIN EIO_PRI_MIN	263	#define ETP_PRI_MIN EIO_PRI_MIN
170	#define ETP_PRI_MAX EIO_PRI_MAX	264	#define ETP_PRI_MAX EIO_PRI_MAX
171		265
172	struct etp_worker;	266	struct etp_worker;
…		…
176	static int eio_finish (eio_req *req);	270	static int eio_finish (eio_req *req);
177	#define ETP_FINISH(req) eio_finish (req)	271	#define ETP_FINISH(req) eio_finish (req)
178	static void eio_execute (struct etp_worker *self, eio_req *req);	272	static void eio_execute (struct etp_worker *self, eio_req *req);
179	#define ETP_EXECUTE(wrk,req) eio_execute (wrk,req)	273	#define ETP_EXECUTE(wrk,req) eio_execute (wrk,req)
180		274
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	/*****************************************************************************/	275	/*****************************************************************************/
199		276
200	#define ETP_NUM_PRI (ETP_PRI_MAX - ETP_PRI_MIN + 1)	277	#define ETP_NUM_PRI (ETP_PRI_MAX - ETP_PRI_MIN + 1)
201		278
202	/* calculate time difference in ~1/EIO_TICKS of a second */	279	/* calculate time difference in ~1/EIO_TICKS of a second */
		280	ecb_inline int
203	static int tvdiff (struct timeval *tv1, struct timeval *tv2)	281	tvdiff (struct timeval *tv1, struct timeval *tv2)
204	{	282	{
205	return (tv2->tv_sec - tv1->tv_sec ) * EIO_TICKS	283	return (tv2->tv_sec - tv1->tv_sec ) * EIO_TICKS
206	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);	284	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
207	}	285	}
208		286
…		…
215	static unsigned int max_poll_reqs; /* reslock */	293	static unsigned int max_poll_reqs; /* reslock */
216		294
217	static volatile unsigned int nreqs; /* reqlock */	295	static volatile unsigned int nreqs; /* reqlock */
218	static volatile unsigned int nready; /* reqlock */	296	static volatile unsigned int nready; /* reqlock */
219	static volatile unsigned int npending; /* reqlock */	297	static volatile unsigned int npending; /* reqlock */
220	static volatile unsigned int max_idle = 4;	298	static volatile unsigned int max_idle = 4; /* maximum number of threads that can idle indefinitely */
		299	static volatile unsigned int idle_timeout = 10; /* number of seconds after which an idle threads exit */
221		300
222	static mutex_t wrklock = X_MUTEX_INIT;	301	static xmutex_t wrklock;
223	static mutex_t reslock = X_MUTEX_INIT;	302	static xmutex_t reslock;
224	static mutex_t reqlock = X_MUTEX_INIT;	303	static xmutex_t reqlock;
225	static cond_t reqwait = X_COND_INIT;	304	static xcond_t reqwait;
226		305
227	#if !HAVE_PREADWRITE	306	#if !HAVE_PREADWRITE
228	/*	307	/*
229	* make our pread/pwrite emulation safe against themselves, but not against	308	* make our pread/pwrite emulation safe against themselves, but not against
230	* normal read/write by using a mutex. slows down execution a lot,	309	* normal read/write by using a mutex. slows down execution a lot,
231	* but that's your problem, not mine.	310	* but that's your problem, not mine.
232	*/	311	*/
233	static mutex_t preadwritelock = X_MUTEX_INIT;	312	static xmutex_t preadwritelock;
234	#endif	313	#endif
235		314
236	typedef struct etp_worker	315	typedef struct etp_worker
237	{	316	{
238	/* locked by wrklock */	317	/* locked by wrklock */
239	struct etp_worker *prev, *next;	318	struct etp_worker *prev, *next;
240		319
241	thread_t tid;	320	xthread_t tid;
242		321
243	/* locked by reslock, reqlock or wrklock */	322	/* locked by reslock, reqlock or wrklock */
244	ETP_REQ *req; /* currently processed request */	323	ETP_REQ *req; /* currently processed request */
245		324
		325	#ifdef ETP_WORKER_COMMON
246	ETP_WORKER_COMMON	326	ETP_WORKER_COMMON
		327	#endif
247	} etp_worker;	328	} etp_worker;
248		329
249	static etp_worker wrk_first = { &wrk_first, &wrk_first, 0 }; /* NOT etp */	330	static etp_worker wrk_first; /* NOT etp */
250		331
251	#define ETP_WORKER_LOCK(wrk) X_LOCK (wrklock)	332	#define ETP_WORKER_LOCK(wrk) X_LOCK (wrklock)
252	#define ETP_WORKER_UNLOCK(wrk) X_UNLOCK (wrklock)	333	#define ETP_WORKER_UNLOCK(wrk) X_UNLOCK (wrklock)
253		334
254	/* worker threads management */	335	/* worker threads management */
255		336
		337	static void ecb_cold
256	static void etp_worker_clear (etp_worker *wrk)	338	etp_worker_clear (etp_worker *wrk)
257	{	339	{
258	ETP_WORKER_CLEAR (wrk);
259	}	340	}
260		341
		342	static void ecb_cold
261	static void etp_worker_free (etp_worker *wrk)	343	etp_worker_free (etp_worker *wrk)
262	{	344	{
263	wrk->next->prev = wrk->prev;	345	wrk->next->prev = wrk->prev;
264	wrk->prev->next = wrk->next;	346	wrk->prev->next = wrk->next;
265		347
266	free (wrk);	348	free (wrk);
267	}	349	}
268		350
269	static unsigned int etp_nreqs (void)	351	static unsigned int
		352	etp_nreqs (void)
270	{	353	{
271	int retval;	354	int retval;
272	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);	355	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
273	retval = nreqs;	356	retval = nreqs;
274	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);	357	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
275	return retval;	358	return retval;
276	}	359	}
277		360
278	static unsigned int etp_nready (void)	361	static unsigned int
		362	etp_nready (void)
279	{	363	{
280	unsigned int retval;	364	unsigned int retval;
281		365
282	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);	366	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
283	retval = nready;	367	retval = nready;
284	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);	368	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
285		369
286	return retval;	370	return retval;
287	}	371	}
288		372
289	static unsigned int etp_npending (void)	373	static unsigned int
		374	etp_npending (void)
290	{	375	{
291	unsigned int retval;	376	unsigned int retval;
292		377
293	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);	378	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
294	retval = npending;	379	retval = npending;
295	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);	380	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
296		381
297	return retval;	382	return retval;
298	}	383	}
299		384
300	static unsigned int etp_nthreads (void)	385	static unsigned int
		386	etp_nthreads (void)
301	{	387	{
302	unsigned int retval;	388	unsigned int retval;
303		389
304	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);	390	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
305	retval = started;	391	retval = started;
…		…
319	} etp_reqq;	405	} etp_reqq;
320		406
321	static etp_reqq req_queue;	407	static etp_reqq req_queue;
322	static etp_reqq res_queue;	408	static etp_reqq res_queue;
323		409
		410	static void ecb_noinline ecb_cold
		411	reqq_init (etp_reqq *q)
		412	{
		413	int pri;
		414
		415	for (pri = 0; pri < ETP_NUM_PRI; ++pri)
		416	q->qs[pri] = q->qe[pri] = 0;
		417
		418	q->size = 0;
		419	}
		420
		421	static int ecb_noinline
324	static int reqq_push (etp_reqq *q, ETP_REQ *req)	422	reqq_push (etp_reqq *q, ETP_REQ *req)
325	{	423	{
326	int pri = req->pri;	424	int pri = req->pri;
327	req->next = 0;	425	req->next = 0;
328		426
329	if (q->qe[pri])	427	if (q->qe[pri])
…		…
335	q->qe[pri] = q->qs[pri] = req;	433	q->qe[pri] = q->qs[pri] = req;
336		434
337	return q->size++;	435	return q->size++;
338	}	436	}
339		437
		438	static ETP_REQ * ecb_noinline
340	static ETP_REQ *reqq_shift (etp_reqq *q)	439	reqq_shift (etp_reqq *q)
341	{	440	{
342	int pri;	441	int pri;
343		442
344	if (!q->size)	443	if (!q->size)
345	return 0;	444	return 0;
…		…
360	}	459	}
361		460
362	abort ();	461	abort ();
363	}	462	}
364		463
365	static void etp_atfork_prepare (void)	464	static int ecb_cold
		465	etp_init (void (*want_poll)(void), void (*done_poll)(void))
366	{	466	{
367	X_LOCK (wrklock);	467	X_MUTEX_CREATE (wrklock);
368	X_LOCK (reqlock);	468	X_MUTEX_CREATE (reslock);
369	X_LOCK (reslock);	469	X_MUTEX_CREATE (reqlock);
370	#if !HAVE_PREADWRITE	470	X_COND_CREATE (reqwait);
371	X_LOCK (preadwritelock);
372	#endif
373	}
374		471
375	static void etp_atfork_parent (void)	472	reqq_init (&req_queue);
376	{	473	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		474
385	static void etp_atfork_child (void)	475	wrk_first.next =
386	{	476	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		477
406	started = 0;	478	started = 0;
407	idle = 0;	479	idle = 0;
408	nreqs = 0;	480	nreqs = 0;
409	nready = 0;	481	nready = 0;
410	npending = 0;	482	npending = 0;
411		483
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;	484	want_poll_cb = want_poll;
429	done_poll_cb = done_poll;	485	done_poll_cb = done_poll;
430		486
431	return 0;	487	return 0;
432	}	488	}
433		489
434	X_THREAD_PROC (etp_proc);	490	X_THREAD_PROC (etp_proc);
435		491
		492	static void ecb_cold
436	static void etp_start_thread (void)	493	etp_start_thread (void)
437	{	494	{
438	etp_worker *wrk = calloc (1, sizeof (etp_worker));	495	etp_worker *wrk = calloc (1, sizeof (etp_worker));
439		496
440	/*TODO*/	497	/*TODO*/
441	assert (("unable to allocate worker thread data", wrk));	498	assert (("unable to allocate worker thread data", wrk));
…		…
454	free (wrk);	511	free (wrk);
455		512
456	X_UNLOCK (wrklock);	513	X_UNLOCK (wrklock);
457	}	514	}
458		515
		516	static void
459	static void etp_maybe_start_thread (void)	517	etp_maybe_start_thread (void)
460	{	518	{
461	if (expect_true (etp_nthreads () >= wanted))	519	if (ecb_expect_true (etp_nthreads () >= wanted))
462	return;	520	return;
463		521
464	/* todo: maybe use idle here, but might be less exact */	522	/* todo: maybe use idle here, but might be less exact */
465	if (expect_true (0 <= (int)etp_nthreads () + (int)etp_npending () - (int)etp_nreqs ()))	523	if (ecb_expect_true (0 <= (int)etp_nthreads () + (int)etp_npending () - (int)etp_nreqs ()))
466	return;	524	return;
467		525
468	etp_start_thread ();	526	etp_start_thread ();
469	}	527	}
470		528
		529	static void ecb_cold
471	static void etp_end_thread (void)	530	etp_end_thread (void)
472	{	531	{
473	eio_req *req = calloc (1, sizeof (eio_req));	532	eio_req *req = calloc (1, sizeof (eio_req));
474		533
475	req->type = -1;	534	req->type = -1;
476	req->pri = ETP_PRI_MAX - ETP_PRI_MIN;	535	req->pri = ETP_PRI_MAX - ETP_PRI_MIN;
…		…
483	X_LOCK (wrklock);	542	X_LOCK (wrklock);
484	--started;	543	--started;
485	X_UNLOCK (wrklock);	544	X_UNLOCK (wrklock);
486	}	545	}
487		546
488	static int etp_poll (void)	547	static int
		548	etp_poll (void)
489	{	549	{
490	unsigned int maxreqs;	550	unsigned int maxreqs;
491	unsigned int maxtime;	551	unsigned int maxtime;
492	struct timeval tv_start, tv_now;	552	struct timeval tv_start, tv_now;
493		553
…		…
523		583
524	X_LOCK (reqlock);	584	X_LOCK (reqlock);
525	--nreqs;	585	--nreqs;
526	X_UNLOCK (reqlock);	586	X_UNLOCK (reqlock);
527		587
528	if (expect_false (req->type == EIO_GROUP && req->size))	588	if (ecb_expect_false (req->type == EIO_GROUP && req->size))
529	{	589	{
530	req->int1 = 1; /* mark request as delayed */	590	req->int1 = 1; /* mark request as delayed */
531	continue;	591	continue;
532	}	592	}
533	else	593	else
534	{	594	{
535	int res = ETP_FINISH (req);	595	int res = ETP_FINISH (req);
536	if (expect_false (res))	596	if (ecb_expect_false (res))
537	return res;	597	return res;
538	}	598	}
539		599
540	if (expect_false (maxreqs && !--maxreqs))	600	if (ecb_expect_false (maxreqs && !--maxreqs))
541	break;	601	break;
542		602
543	if (maxtime)	603	if (maxtime)
544	{	604	{
545	gettimeofday (&tv_now, 0);	605	gettimeofday (&tv_now, 0);
…		…
551		611
552	errno = EAGAIN;	612	errno = EAGAIN;
553	return -1;	613	return -1;
554	}	614	}
555		615
		616	static void
556	static void etp_cancel (ETP_REQ *req)	617	etp_cancel (ETP_REQ *req)
557	{	618	{
558	X_LOCK (wrklock);	619	req->cancelled = 1;
559	req->flags |= EIO_FLAG_CANCELLED;
560	X_UNLOCK (wrklock);
561		620
562	eio_grp_cancel (req);	621	eio_grp_cancel (req);
563	}	622	}
564		623
		624	static void
565	static void etp_submit (ETP_REQ *req)	625	etp_submit (ETP_REQ *req)
566	{	626	{
567	req->pri -= ETP_PRI_MIN;	627	req->pri -= ETP_PRI_MIN;
568		628
569	if (expect_false (req->pri < ETP_PRI_MIN - ETP_PRI_MIN)) req->pri = ETP_PRI_MIN - ETP_PRI_MIN;	629	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;	630	if (ecb_expect_false (req->pri > ETP_PRI_MAX - ETP_PRI_MIN)) req->pri = ETP_PRI_MAX - ETP_PRI_MIN;
571		631
572	if (expect_false (req->type == EIO_GROUP))	632	if (ecb_expect_false (req->type == EIO_GROUP))
573	{	633	{
574	/* I hope this is worth it :/ */	634	/* I hope this is worth it :/ */
575	X_LOCK (reqlock);	635	X_LOCK (reqlock);
576	++nreqs;	636	++nreqs;
577	X_UNLOCK (reqlock);	637	X_UNLOCK (reqlock);
…		…
596		656
597	etp_maybe_start_thread ();	657	etp_maybe_start_thread ();
598	}	658	}
599	}	659	}
600		660
		661	static void ecb_cold
601	static void etp_set_max_poll_time (double nseconds)	662	etp_set_max_poll_time (double nseconds)
602	{	663	{
603	if (WORDACCESS_UNSAFE) X_LOCK (reslock);	664	if (WORDACCESS_UNSAFE) X_LOCK (reslock);
604	max_poll_time = nseconds * EIO_TICKS;	665	max_poll_time = nseconds * EIO_TICKS;
605	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);	666	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);
606	}	667	}
607		668
		669	static void ecb_cold
608	static void etp_set_max_poll_reqs (unsigned int maxreqs)	670	etp_set_max_poll_reqs (unsigned int maxreqs)
609	{	671	{
610	if (WORDACCESS_UNSAFE) X_LOCK (reslock);	672	if (WORDACCESS_UNSAFE) X_LOCK (reslock);
611	max_poll_reqs = maxreqs;	673	max_poll_reqs = maxreqs;
612	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);	674	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);
613	}	675	}
614		676
		677	static void ecb_cold
615	static void etp_set_max_idle (unsigned int nthreads)	678	etp_set_max_idle (unsigned int nthreads)
616	{	679	{
617	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);	680	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
618	max_idle = nthreads <= 0 ? 1 : nthreads;	681	max_idle = nthreads;
619	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);	682	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
620	}	683	}
621		684
		685	static void ecb_cold
		686	etp_set_idle_timeout (unsigned int seconds)
		687	{
		688	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
		689	idle_timeout = seconds;
		690	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
		691	}
		692
		693	static void ecb_cold
622	static void etp_set_min_parallel (unsigned int nthreads)	694	etp_set_min_parallel (unsigned int nthreads)
623	{	695	{
624	if (wanted < nthreads)	696	if (wanted < nthreads)
625	wanted = nthreads;	697	wanted = nthreads;
626	}	698	}
627		699
		700	static void ecb_cold
628	static void etp_set_max_parallel (unsigned int nthreads)	701	etp_set_max_parallel (unsigned int nthreads)
629	{	702	{
630	if (wanted > nthreads)	703	if (wanted > nthreads)
631	wanted = nthreads;	704	wanted = nthreads;
632		705
633	while (started > wanted)	706	while (started > wanted)
634	etp_end_thread ();	707	etp_end_thread ();
635	}	708	}
636		709
637	/*****************************************************************************/	710	/*****************************************************************************/
638		711
		712	static void
639	static void grp_try_feed (eio_req *grp)	713	grp_try_feed (eio_req *grp)
640	{	714	{
641	while (grp->size < grp->int2 && !EIO_CANCELLED (grp))	715	while (grp->size < grp->int2 && !EIO_CANCELLED (grp))
642	{	716	{
643	grp->flags &= ~EIO_FLAG_GROUPADD;	717	grp->flags &= ~EIO_FLAG_GROUPADD;
644		718
…		…
651	break;	725	break;
652	}	726	}
653	}	727	}
654	}	728	}
655		729
		730	static int
656	static int grp_dec (eio_req *grp)	731	grp_dec (eio_req *grp)
657	{	732	{
658	--grp->size;	733	--grp->size;
659		734
660	/* call feeder, if applicable */	735	/* call feeder, if applicable */
661	grp_try_feed (grp);	736	grp_try_feed (grp);
…		…
665	return eio_finish (grp);	740	return eio_finish (grp);
666	else	741	else
667	return 0;	742	return 0;
668	}	743	}
669		744
		745	static void
670	void eio_destroy (eio_req *req)	746	eio_destroy (eio_req *req)
671	{	747	{
672	if ((req)->flags & EIO_FLAG_PTR1_FREE) free (req->ptr1);	748	if ((req)->flags & EIO_FLAG_PTR1_FREE) free (req->ptr1);
673	if ((req)->flags & EIO_FLAG_PTR2_FREE) free (req->ptr2);	749	if ((req)->flags & EIO_FLAG_PTR2_FREE) free (req->ptr2);
674		750
675	EIO_DESTROY (req);	751	EIO_DESTROY (req);
676	}	752	}
677		753
		754	static int
678	static int eio_finish (eio_req *req)	755	eio_finish (eio_req *req)
679	{	756	{
680	int res = EIO_FINISH (req);	757	int res = EIO_FINISH (req);
681		758
682	if (req->grp)	759	if (req->grp)
683	{	760	{
…		…
691	if (grp->grp_first == req)	768	if (grp->grp_first == req)
692	grp->grp_first = req->grp_next;	769	grp->grp_first = req->grp_next;
693		770
694	res2 = grp_dec (grp);	771	res2 = grp_dec (grp);
695		772
696	if (!res && res2)	773	if (!res)
697	res = res2;	774	res = res2;
698	}	775	}
699		776
700	eio_destroy (req);	777	eio_destroy (req);
701		778
702	return res;	779	return res;
703	}	780	}
704		781
		782	void
705	void eio_grp_cancel (eio_req *grp)	783	eio_grp_cancel (eio_req *grp)
706	{	784	{
707	for (grp = grp->grp_first; grp; grp = grp->grp_next)	785	for (grp = grp->grp_first; grp; grp = grp->grp_next)
708	eio_cancel (grp);	786	eio_cancel (grp);
709	}	787	}
710		788
		789	void
711	void eio_cancel (eio_req *req)	790	eio_cancel (eio_req *req)
712	{	791	{
713	etp_cancel (req);	792	etp_cancel (req);
714	}	793	}
715		794
		795	void
716	void eio_submit (eio_req *req)	796	eio_submit (eio_req *req)
717	{	797	{
718	etp_submit (req);	798	etp_submit (req);
719	}	799	}
720		800
721	unsigned int eio_nreqs (void)	801	unsigned int
		802	eio_nreqs (void)
722	{	803	{
723	return etp_nreqs ();	804	return etp_nreqs ();
724	}	805	}
725		806
726	unsigned int eio_nready (void)	807	unsigned int
		808	eio_nready (void)
727	{	809	{
728	return etp_nready ();	810	return etp_nready ();
729	}	811	}
730		812
731	unsigned int eio_npending (void)	813	unsigned int
		814	eio_npending (void)
732	{	815	{
733	return etp_npending ();	816	return etp_npending ();
734	}	817	}
735		818
736	unsigned int eio_nthreads (void)	819	unsigned int ecb_cold
		820	eio_nthreads (void)
737	{	821	{
738	return etp_nthreads ();	822	return etp_nthreads ();
739	}	823	}
740		824
		825	void ecb_cold
741	void eio_set_max_poll_time (double nseconds)	826	eio_set_max_poll_time (double nseconds)
742	{	827	{
743	etp_set_max_poll_time (nseconds);	828	etp_set_max_poll_time (nseconds);
744	}	829	}
745		830
		831	void ecb_cold
746	void eio_set_max_poll_reqs (unsigned int maxreqs)	832	eio_set_max_poll_reqs (unsigned int maxreqs)
747	{	833	{
748	etp_set_max_poll_reqs (maxreqs);	834	etp_set_max_poll_reqs (maxreqs);
749	}	835	}
750		836
		837	void ecb_cold
751	void eio_set_max_idle (unsigned int nthreads)	838	eio_set_max_idle (unsigned int nthreads)
752	{	839	{
753	etp_set_max_idle (nthreads);	840	etp_set_max_idle (nthreads);
754	}	841	}
755		842
		843	void ecb_cold
		844	eio_set_idle_timeout (unsigned int seconds)
		845	{
		846	etp_set_idle_timeout (seconds);
		847	}
		848
		849	void ecb_cold
756	void eio_set_min_parallel (unsigned int nthreads)	850	eio_set_min_parallel (unsigned int nthreads)
757	{	851	{
758	etp_set_min_parallel (nthreads);	852	etp_set_min_parallel (nthreads);
759	}	853	}
760		854
		855	void ecb_cold
761	void eio_set_max_parallel (unsigned int nthreads)	856	eio_set_max_parallel (unsigned int nthreads)
762	{	857	{
763	etp_set_max_parallel (nthreads);	858	etp_set_max_parallel (nthreads);
764	}	859	}
765		860
766	int eio_poll (void)	861	int eio_poll (void)
…		…
775	# undef pread	870	# undef pread
776	# undef pwrite	871	# undef pwrite
777	# define pread eio__pread	872	# define pread eio__pread
778	# define pwrite eio__pwrite	873	# define pwrite eio__pwrite
779		874
780	static ssize_t	875	static eio_ssize_t
781	eio__pread (int fd, void *buf, size_t count, off_t offset)	876	eio__pread (int fd, void *buf, size_t count, off_t offset)
782	{	877	{
783	ssize_t res;	878	eio_ssize_t res;
784	off_t ooffset;	879	off_t ooffset;
785		880
786	X_LOCK (preadwritelock);	881	X_LOCK (preadwritelock);
787	ooffset = lseek (fd, 0, SEEK_CUR);	882	ooffset = lseek (fd, 0, SEEK_CUR);
788	lseek (fd, offset, SEEK_SET);	883	lseek (fd, offset, SEEK_SET);
…		…
791	X_UNLOCK (preadwritelock);	886	X_UNLOCK (preadwritelock);
792		887
793	return res;	888	return res;
794	}	889	}
795		890
796	static ssize_t	891	static eio_ssize_t
797	eio__pwrite (int fd, void *buf, size_t count, off_t offset)	892	eio__pwrite (int fd, void *buf, size_t count, off_t offset)
798	{	893	{
799	ssize_t res;	894	eio_ssize_t res;
800	off_t ooffset;	895	off_t ooffset;
801		896
802	X_LOCK (preadwritelock);	897	X_LOCK (preadwritelock);
803	ooffset = lseek (fd, 0, SEEK_CUR);	898	ooffset = lseek (fd, 0, SEEK_CUR);
804	lseek (fd, offset, SEEK_SET);	899	lseek (fd, offset, SEEK_SET);
…		…
808		903
809	return res;	904	return res;
810	}	905	}
811	#endif	906	#endif
812		907
813	#ifndef HAVE_FUTIMES	908	#ifndef HAVE_UTIMES
814		909
815	# undef utimes	910	# undef utimes
816	# undef futimes
817	# define utimes(path,times) eio__utimes (path, times)	911	# define utimes(path,times) eio__utimes (path, times)
818	# define futimes(fd,times) eio__futimes (fd, times)
819		912
820	static int	913	static int
821	eio__utimes (const char *filename, const struct timeval times[2])	914	eio__utimes (const char *filename, const struct timeval times[2])
822	{	915	{
823	if (times)	916	if (times)
…		…
831	}	924	}
832	else	925	else
833	return utime (filename, 0);	926	return utime (filename, 0);
834	}	927	}
835		928
		929	#endif
		930
		931	#ifndef HAVE_FUTIMES
		932
		933	# undef futimes
		934	# define futimes(fd,times) eio__futimes (fd, times)
		935
		936	static int
836	static int eio__futimes (int fd, const struct timeval tv[2])	937	eio__futimes (int fd, const struct timeval tv[2])
837	{	938	{
838	errno = ENOSYS;	939	errno = ENOSYS;
839	return -1;	940	return -1;
840	}	941	}
841		942
…		…
844	#if !HAVE_FDATASYNC	945	#if !HAVE_FDATASYNC
845	# undef fdatasync	946	# undef fdatasync
846	# define fdatasync(fd) fsync (fd)	947	# define fdatasync(fd) fsync (fd)
847	#endif	948	#endif
848		949
		950	static int
		951	eio__syncfs (int fd)
		952	{
		953	int res;
		954
		955	#if HAVE_SYS_SYNCFS
		956	res = (int)syscall (__NR_syncfs, (int)(fd));
		957	#else
		958	res = -1;
		959	errno = ENOSYS;
		960	#endif
		961
		962	if (res < 0 && errno == ENOSYS && fd >= 0)
		963	sync ();
		964
		965	return res;
		966	}
		967
849	/* sync_file_range always needs emulation */	968	/* sync_file_range always needs emulation */
850	int	969	static int
851	eio__sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags)	970	eio__sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags)
852	{	971	{
853	#if HAVE_SYNC_FILE_RANGE	972	#if HAVE_SYNC_FILE_RANGE
854	int res;	973	int res;
855		974
…		…
872	/* even though we could play tricks with the flags, it's better to always	991	/* 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 */	992	* call fdatasync, as that matches the expectation of its users best */
874	return fdatasync (fd);	993	return fdatasync (fd);
875	}	994	}
876		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	}
		1006
877	#if !HAVE_READAHEAD	1007	#if !HAVE_READAHEAD
878	# undef readahead	1008	# undef readahead
879	# define readahead(fd,offset,count) eio__readahead (fd, offset, count, self)	1009	# define readahead(fd,offset,count) eio__readahead (fd, offset, count, self)
880		1010
881	static ssize_t	1011	static eio_ssize_t
882	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)
883	{	1013	{
884	size_t todo = count;	1014	size_t todo = count;
885	dBUF;	1015	dBUF;
886		1016
…		…
891	pread (fd, eio_buf, len, offset);	1021	pread (fd, eio_buf, len, offset);
892	offset += len;	1022	offset += len;
893	todo -= len;	1023	todo -= len;
894	}	1024	}
895		1025
		1026	FUBd;
		1027
896	errno = 0;	1028	errno = 0;
897	return count;	1029	return count;
898	}	1030	}
899		1031
900	#endif	1032	#endif
901		1033
902	/* sendfile always needs emulation */	1034	/* sendfile always needs emulation */
903	static ssize_t	1035	static eio_ssize_t
904	eio__sendfile (int ofd, int ifd, off_t offset, size_t count, etp_worker *self)	1036	eio__sendfile (int ofd, int ifd, off_t offset, size_t count)
905	{	1037	{
		1038	eio_ssize_t written = 0;
906	ssize_t res;	1039	eio_ssize_t res;
907		1040
908	if (!count)	1041	if (!count)
909	return 0;	1042	return 0;
910		1043
		1044	for (;;)
		1045	{
		1046	#ifdef __APPLE__
		1047	# undef HAVE_SENDFILE /* broken, as everything on os x */
		1048	#endif
911	#if HAVE_SENDFILE	1049	#if HAVE_SENDFILE
912	# if __linux	1050	# if __linux
		1051	off_t soffset = offset;
913	res = sendfile (ofd, ifd, &offset, count);	1052	res = sendfile (ofd, ifd, &soffset, count);
914		1053
915	# elif __FreeBSD__	1054	# elif __FreeBSD__
916	/*	1055	/*
917	* Of course, the freebsd sendfile is a dire hack with no thoughts	1056	* Of course, the freebsd sendfile is a dire hack with no thoughts
918	* wasted on making it similar to other I/O functions.	1057	* wasted on making it similar to other I/O functions.
919	*/	1058	*/
920	{
921	off_t sbytes;	1059	off_t sbytes;
922	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);	1060	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
923		1061
		1062	#if 0 /* according to the manpage, this is correct, but broken behaviour */
924	/* freebsd' sendfile will return 0 on success */	1063	/* freebsd' sendfile will return 0 on success */
925	/* freebsd 8 documents it as only setting *sbytes on EINTR and EAGAIN, but */	1064	/* freebsd 8 documents it as only setting *sbytes on EINTR and EAGAIN, but */
926	/* not on e.g. EIO or EPIPE - sounds broken */	1065	/* not on e.g. EIO or EPIPE - sounds broken */
927	if ((res < 0 && (errno == EAGAIN || errno == EINTR) && sbytes) || res == 0)	1066	if ((res < 0 && (errno == EAGAIN || errno == EINTR) && sbytes) || res == 0)
928	res = sbytes;	1067	res = sbytes;
929	}	1068	#endif
		1069
		1070	/* according to source inspection, this is correct, and useful behaviour */
		1071	if (sbytes)
		1072	res = sbytes;
930		1073
931	# elif defined (__APPLE__)	1074	# elif defined (__APPLE__)
932
933	{
934	off_t sbytes = count;	1075	off_t sbytes = count;
935	res = sendfile (ifd, ofd, offset, &sbytes, 0, 0);	1076	res = sendfile (ifd, ofd, offset, &sbytes, 0, 0);
936		1077
937	/* according to the manpage, sbytes is always valid */	1078	/* according to the manpage, sbytes is always valid */
938	if (sbytes)	1079	if (sbytes)
939	res = sbytes;	1080	res = sbytes;
940	}
941		1081
942	# elif __hpux	1082	# elif __hpux
943	res = sendfile (ofd, ifd, offset, count, 0, 0);	1083	res = sendfile (ofd, ifd, offset, count, 0, 0);
944		1084
945	# elif __solaris	1085	# elif __solaris
946	{
947	struct sendfilevec vec;	1086	struct sendfilevec vec;
948	size_t sbytes;	1087	size_t sbytes;
949		1088
950	vec.sfv_fd = ifd;	1089	vec.sfv_fd = ifd;
951	vec.sfv_flag = 0;	1090	vec.sfv_flag = 0;
952	vec.sfv_off = offset;	1091	vec.sfv_off = offset;
953	vec.sfv_len = count;	1092	vec.sfv_len = count;
954		1093
955	res = sendfilev (ofd, &vec, 1, &sbytes);	1094	res = sendfilev (ofd, &vec, 1, &sbytes);
956		1095
957	if (res < 0 && sbytes)	1096	if (res < 0 && sbytes)
958	res = sbytes;	1097	res = sbytes;
959	}
960		1098
961	# endif	1099	# endif
962		1100
963	#elif defined (_WIN32)	1101	#elif defined (_WIN32) && 0
964
965	/* does not work, just for documentation of what would need to be done */	1102	/* does not work, just for documentation of what would need to be done */
966	{	1103	/* actually, cannot be done like this, as TransmitFile changes the file offset, */
		1104	/* libeio guarantees that the file offset does not change, and windows */
		1105	/* has no way to get an independent handle to the same file description */
967	HANDLE h = TO_SOCKET (ifd);	1106	HANDLE h = TO_SOCKET (ifd);
968	SetFilePointer (h, offset, 0, FILE_BEGIN);	1107	SetFilePointer (h, offset, 0, FILE_BEGIN);
969	res = TransmitFile (TO_SOCKET (ofd), h, count, 0, 0, 0, 0);	1108	res = TransmitFile (TO_SOCKET (ofd), h, count, 0, 0, 0, 0);
970	}
971		1109
972	#else	1110	#else
973	res = -1;	1111	res = -1;
974	errno = ENOSYS;	1112	errno = ENOSYS;
975	#endif	1113	#endif
976		1114
		1115	/* we assume sendfile can copy at least 128mb in one go */
		1116	if (res <= 128 * 1024 * 1024)
		1117	{
		1118	if (res > 0)
		1119	written += res;
		1120
		1121	if (written)
		1122	return written;
		1123
		1124	break;
		1125	}
		1126	else
		1127	{
		1128	/* if we requested more, then probably the kernel was lazy */
		1129	written += res;
		1130	offset += res;
		1131	count -= res;
		1132
		1133	if (!count)
		1134	return written;
		1135	}
		1136	}
		1137
977	if (res < 0	1138	if (res < 0
978	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK	1139	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
979	/* BSDs */	1140	/* BSDs */
980	#ifdef ENOTSUP /* sigh, if the steenking pile called openbsd would only try to at least compile posix code... */	1141	#ifdef ENOTSUP /* sigh, if the steenking pile called openbsd would only try to at least compile posix code... */
981	|| errno == ENOTSUP	1142	|| errno == ENOTSUP
982	#endif	1143	#endif
		1144	#ifdef EOPNOTSUPP /* windows */
983	|| errno == EOPNOTSUPP /* BSDs */	1145	|| errno == EOPNOTSUPP /* BSDs */
		1146	#endif
984	#if __solaris	1147	#if __solaris
985	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE	1148	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
986	#endif	1149	#endif
987	)	1150	)
988	)	1151	)
…		…
992		1155
993	res = 0;	1156	res = 0;
994		1157
995	while (count)	1158	while (count)
996	{	1159	{
997	ssize_t cnt;	1160	eio_ssize_t cnt;
998		1161
999	cnt = pread (ifd, eio_buf, count > EIO_BUFSIZE ? EIO_BUFSIZE : count, offset);	1162	cnt = pread (ifd, eio_buf, count > EIO_BUFSIZE ? EIO_BUFSIZE : count, offset);
1000		1163
1001	if (cnt <= 0)	1164	if (cnt <= 0)
1002	{	1165	{
…		…
1014		1177
1015	offset += cnt;	1178	offset += cnt;
1016	res += cnt;	1179	res += cnt;
1017	count -= cnt;	1180	count -= cnt;
1018	}	1181	}
		1182
		1183	FUBd;
1019	}	1184	}
1020		1185
1021	return res;	1186	return res;
		1187	}
		1188
		1189	#ifdef PAGESIZE
		1190	# define eio_pagesize() PAGESIZE
		1191	#else
		1192	static intptr_t
		1193	eio_pagesize (void)
		1194	{
		1195	static intptr_t page;
		1196
		1197	if (!page)
		1198	page = sysconf (_SC_PAGESIZE);
		1199
		1200	return page;
		1201	}
		1202	#endif
		1203
		1204	static void
		1205	eio_page_align (void **addr, size_t *length)
		1206	{
		1207	intptr_t mask = eio_pagesize () - 1;
		1208
		1209	/* round down addr */
		1210	intptr_t adj = mask & (intptr_t)*addr;
		1211
		1212	*addr = (void *)((intptr_t)*addr - adj);
		1213	*length += adj;
		1214
		1215	/* round up length */
		1216	*length = (*length + mask) & ~mask;
		1217	}
		1218
		1219	#if !_POSIX_MEMLOCK
		1220	# define eio__mlockall(a) EIO_ENOSYS ()
		1221	#else
		1222
		1223	static int
		1224	eio__mlockall (int flags)
		1225	{
		1226	#if __GLIBC__ == 2 && __GLIBC_MINOR__ <= 7
		1227	extern int mallopt (int, int);
		1228	mallopt (-6, 238); /* http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=473812 */
		1229	#endif
		1230
		1231	if (EIO_MCL_CURRENT != MCL_CURRENT
		1232	|| EIO_MCL_FUTURE != MCL_FUTURE)
		1233	{
		1234	flags = 0
		1235	| (flags & EIO_MCL_CURRENT ? MCL_CURRENT : 0)
		1236	| (flags & EIO_MCL_FUTURE ? MCL_FUTURE : 0);
		1237	}
		1238
		1239	return mlockall (flags);
		1240	}
		1241	#endif
		1242
		1243	#if !_POSIX_MEMLOCK_RANGE
		1244	# define eio__mlock(a,b) EIO_ENOSYS ()
		1245	#else
		1246
		1247	static int
		1248	eio__mlock (void *addr, size_t length)
		1249	{
		1250	eio_page_align (&addr, &length);
		1251
		1252	return mlock (addr, length);
		1253	}
		1254
		1255	#endif
		1256
		1257	#if !(_POSIX_MAPPED_FILES && _POSIX_SYNCHRONIZED_IO)
		1258	# define eio__msync(a,b,c) EIO_ENOSYS ()
		1259	#else
		1260
		1261	static int
		1262	eio__msync (void *mem, size_t len, int flags)
		1263	{
		1264	eio_page_align (&mem, &len);
		1265
		1266	if (EIO_MS_ASYNC != MS_SYNC
		1267	|| EIO_MS_INVALIDATE != MS_INVALIDATE
		1268	|| EIO_MS_SYNC != MS_SYNC)
		1269	{
		1270	flags = 0
		1271	| (flags & EIO_MS_ASYNC ? MS_ASYNC : 0)
		1272	| (flags & EIO_MS_INVALIDATE ? MS_INVALIDATE : 0)
		1273	| (flags & EIO_MS_SYNC ? MS_SYNC : 0);
		1274	}
		1275
		1276	return msync (mem, len, flags);
		1277	}
		1278
		1279	#endif
		1280
		1281	static int
		1282	eio__mtouch (eio_req *req)
		1283	{
		1284	void *mem = req->ptr2;
		1285	size_t len = req->size;
		1286	int flags = req->int1;
		1287
		1288	eio_page_align (&mem, &len);
		1289
		1290	{
		1291	intptr_t addr = (intptr_t)mem;
		1292	intptr_t end = addr + len;
		1293	intptr_t page = eio_pagesize ();
		1294
		1295	if (addr < end)
		1296	if (flags & EIO_MT_MODIFY) /* modify */
		1297	do { *((volatile sig_atomic_t *)addr) |= 0; } while ((addr += page) < len && !EIO_CANCELLED (req));
		1298	else
		1299	do { *((volatile sig_atomic_t *)addr) ; } while ((addr += page) < len && !EIO_CANCELLED (req));
		1300	}
		1301
		1302	return 0;
		1303	}
		1304
		1305	/*****************************************************************************/
		1306	/* requests implemented outside eio_execute, because they are so large */
		1307
		1308	static void
		1309	eio__realpath (eio_req *req, etp_worker *self)
		1310	{
		1311	char *rel = req->ptr1;
		1312	char *res;
		1313	char *tmp1, *tmp2;
		1314	#if SYMLOOP_MAX > 32
		1315	int symlinks = SYMLOOP_MAX;
		1316	#else
		1317	int symlinks = 32;
		1318	#endif
		1319
		1320	req->result = -1;
		1321
		1322	errno = EINVAL;
		1323	if (!rel)
		1324	return;
		1325
		1326	errno = ENOENT;
		1327	if (!*rel)
		1328	return;
		1329
		1330	if (!req->ptr2)
		1331	{
		1332	X_LOCK (wrklock);
		1333	req->flags |= EIO_FLAG_PTR2_FREE;
		1334	X_UNLOCK (wrklock);
		1335	req->ptr2 = malloc (PATH_MAX * 3);
		1336
		1337	errno = ENOMEM;
		1338	if (!req->ptr2)
		1339	return;
		1340	}
		1341
		1342	res = req->ptr2;
		1343	tmp1 = res + PATH_MAX;
		1344	tmp2 = tmp1 + PATH_MAX;
		1345
		1346	#if 0 /* disabled, the musl way to do things is just too racy */
		1347	#if __linux && defined(O_NONBLOCK) && defined(O_NOATIME)
		1348	/* on linux we may be able to ask the kernel */
		1349	{
		1350	int fd = open (rel, O_RDONLY | O_NONBLOCK | O_NOCTTY | O_NOATIME);
		1351
		1352	if (fd >= 0)
		1353	{
		1354	sprintf (tmp1, "/proc/self/fd/%d", fd);
		1355	req->result = readlink (tmp1, res, PATH_MAX);
		1356	close (fd);
		1357
		1358	/* here we should probably stat the open file and the disk file, to make sure they still match */
		1359
		1360	if (req->result > 0)
		1361	goto done;
		1362	}
		1363	else if (errno == ELOOP || errno == ENAMETOOLONG || errno == ENOENT || errno == ENOTDIR || errno == EIO)
		1364	return;
		1365	}
		1366	#endif
		1367	#endif
		1368
		1369	if (*rel != '/')
		1370	{
		1371	if (!getcwd (res, PATH_MAX))
		1372	return;
		1373
		1374	if (res [1]) /* only use if not / */
		1375	res += strlen (res);
		1376	}
		1377
		1378	while (*rel)
		1379	{
		1380	eio_ssize_t len, linklen;
		1381	char *beg = rel;
		1382
		1383	while (*rel && *rel != '/')
		1384	++rel;
		1385
		1386	len = rel - beg;
		1387
		1388	if (!len) /* skip slashes */
		1389	{
		1390	++rel;
		1391	continue;
		1392	}
		1393
		1394	if (beg [0] == '.')
		1395	{
		1396	if (len == 1)
		1397	continue; /* . - nop */
		1398
		1399	if (beg [1] == '.' && len == 2)
		1400	{
		1401	/* .. - back up one component, if possible */
		1402
		1403	while (res != req->ptr2)
		1404	if (*--res == '/')
		1405	break;
		1406
		1407	continue;
		1408	}
		1409	}
		1410
		1411	errno = ENAMETOOLONG;
		1412	if (res + 1 + len + 1 >= tmp1)
		1413	return;
		1414
		1415	/* copy one component */
		1416	*res = '/';
		1417	memcpy (res + 1, beg, len);
		1418
		1419	/* zero-terminate, for readlink */
		1420	res [len + 1] = 0;
		1421
		1422	/* now check if it's a symlink */
		1423	linklen = readlink (req->ptr2, tmp1, PATH_MAX);
		1424
		1425	if (linklen < 0)
		1426	{
		1427	if (errno != EINVAL)
		1428	return;
		1429
		1430	/* it's a normal directory. hopefully */
		1431	res += len + 1;
		1432	}
		1433	else
		1434	{
		1435	/* yay, it was a symlink - build new path in tmp2 */
		1436	int rellen = strlen (rel);
		1437
		1438	errno = ENAMETOOLONG;
		1439	if (linklen + 1 + rellen >= PATH_MAX)
		1440	return;
		1441
		1442	errno = ELOOP;
		1443	if (!--symlinks)
		1444	return;
		1445
		1446	if (*tmp1 == '/')
		1447	res = req->ptr2; /* symlink resolves to an absolute path */
		1448
		1449	/* we need to be careful, as rel might point into tmp2 already */
		1450	memmove (tmp2 + linklen + 1, rel, rellen + 1);
		1451	tmp2 [linklen] = '/';
		1452	memcpy (tmp2, tmp1, linklen);
		1453
		1454	rel = tmp2;
		1455	}
		1456	}
		1457
		1458	/* special case for the lone root path */
		1459	if (res == req->ptr2)
		1460	*res++ = '/';
		1461
		1462	req->result = res - (char *)req->ptr2;
		1463
		1464	done:
		1465	req->ptr2 = realloc (req->ptr2, req->result); /* trade time for space savings */
1022	}	1466	}
1023		1467
1024	static signed char	1468	static signed char
1025	eio_dent_cmp (const eio_dirent *a, const eio_dirent *b)	1469	eio_dent_cmp (const eio_dirent *a, const eio_dirent *b)
1026	{	1470	{
1027	return a->score - b->score ? a->score - b->score /* works because our signed char is always 0..100 */	1471	return a->score - b->score ? a->score - b->score /* works because our signed char is always 0..100 */
1028	: a->inode < b->inode ? -1 : a->inode > b->inode ? 1 : 0;	1472	: a->inode < b->inode ? -1
		1473	: a->inode > b->inode ? 1
		1474	: 0;
1029	}	1475	}
1030		1476
1031	#define EIO_DENT_CMP(i,op,j) eio_dent_cmp (&i, &j) op 0	1477	#define EIO_DENT_CMP(i,op,j) eio_dent_cmp (&i, &j) op 0
1032		1478
1033	#define EIO_SORT_CUTOFF 30 /* quite high, but performs well on many filesystems */	1479	#define EIO_SORT_CUTOFF 30 /* quite high, but performs well on many filesystems */
1034	#define EIO_SORT_FAST 60 /* when to only use insertion sort */	1480	#define EIO_SORT_FAST 60 /* when to only use insertion sort */
1035		1481
1036	static void	1482	static void
1037	eio_dent_radix_sort (eio_dirent *dents, int size, signed char score_bits, ino_t inode_bits)	1483	eio_dent_radix_sort (eio_dirent *dents, int size, signed char score_bits, eio_ino_t inode_bits)
1038	{	1484	{
1039	unsigned char bits [9 + sizeof (ino_t) * 8];	1485	unsigned char bits [9 + sizeof (eio_ino_t) * 8];
1040	unsigned char *bit = bits;	1486	unsigned char *bit = bits;
1041		1487
1042	assert (CHAR_BIT == 8);	1488	assert (CHAR_BIT == 8);
1043	assert (sizeof (eio_dirent) * 8 < 256);	1489	assert (sizeof (eio_dirent) * 8 < 256);
1044	assert (offsetof (eio_dirent, inode)); /* we use 0 as sentinel */	1490	assert (offsetof (eio_dirent, inode)); /* we use bit #0 as sentinel */
1045	assert (offsetof (eio_dirent, score)); /* we use 0 as sentinel */	1491	assert (offsetof (eio_dirent, score)); /* we use bit #0 as sentinel */
1046		1492
1047	if (size <= EIO_SORT_FAST)	1493	if (size <= EIO_SORT_FAST)
1048	return;	1494	return;
1049		1495
1050	/* first prepare an array of bits to test in our radix sort */	1496	/* first prepare an array of bits to test in our radix sort */
1051	/* try to take endianness into account, as well as differences in ino_t sizes */	1497	/* try to take endianness into account, as well as differences in eio_ino_t sizes */
1052	/* inode_bits must contain all inodes ORed together */	1498	/* inode_bits must contain all inodes ORed together */
1053	/* which is used to skip bits that are 0 everywhere, which is very common */	1499	/* which is used to skip bits that are 0 everywhere, which is very common */
1054	{	1500	{
1055	ino_t endianness;	1501	eio_ino_t endianness;
1056	int i, j;	1502	int i, j;
1057		1503
1058	/* we store the byte offset of byte n into byte n of "endianness" */	1504	/* we store the byte offset of byte n into byte n of "endianness" */
1059	for (i = 0; i < sizeof (ino_t); ++i)	1505	for (i = 0; i < sizeof (eio_ino_t); ++i)
1060	((unsigned char *)&endianness)[i] = i;	1506	((unsigned char *)&endianness)[i] = i;
1061		1507
1062	*bit++ = 0;	1508	*bit++ = 0;
1063		1509
1064	for (i = 0; i < sizeof (ino_t); ++i)	1510	for (i = 0; i < sizeof (eio_ino_t); ++i)
1065	{	1511	{
1066	/* shifting off the byte offsets out of "endianness" */	1512	/* shifting off the byte offsets out of "endianness" */
1067	int offs = (offsetof (eio_dirent, inode) + (endianness & 0xff)) * 8;	1513	int offs = (offsetof (eio_dirent, inode) + (endianness & 0xff)) * 8;
1068	endianness >>= 8;	1514	endianness >>= 8;
1069		1515
1070	for (j = 0; j < 8; ++j)	1516	for (j = 0; j < 8; ++j)
1071	if (inode_bits & (((ino_t)1) << (i * 8 + j)))	1517	if (inode_bits & (((eio_ino_t)1) << (i * 8 + j)))
1072	*bit++ = offs + j;	1518	*bit++ = offs + j;
1073	}	1519	}
1074		1520
1075	for (j = 0; j < 8; ++j)	1521	for (j = 0; j < 8; ++j)
1076	if (score_bits & (1 << j))	1522	if (score_bits & (1 << j))
1077	*bit++ = offsetof (eio_dirent, score) * 8 + j;	1523	*bit++ = offsetof (eio_dirent, score) * 8 + j;
1078	}	1524	}
1079		1525
1080	/* now actually do the sorting (a variant of MSD radix sort) */	1526	/* now actually do the sorting (a variant of MSD radix sort) */
1081	{	1527	{
1082	eio_dirent *base_stk [9 + sizeof (ino_t) * 8], *base;	1528	eio_dirent *base_stk [9 + sizeof (eio_ino_t) * 8], *base;
1083	eio_dirent *end_stk [9 + sizeof (ino_t) * 8], *end;	1529	eio_dirent *end_stk [9 + sizeof (eio_ino_t) * 8], *end;
1084	unsigned char *bit_stk [9 + sizeof (ino_t) * 8];	1530	unsigned char *bit_stk [9 + sizeof (eio_ino_t) * 8];
1085	int stk_idx = 0;	1531	int stk_idx = 0;
1086		1532
1087	base_stk [stk_idx] = dents;	1533	base_stk [stk_idx] = dents;
1088	end_stk [stk_idx] = dents + size;	1534	end_stk [stk_idx] = dents + size;
1089	bit_stk [stk_idx] = bit - 1;	1535	bit_stk [stk_idx] = bit - 1;
…		…
1168	}	1614	}
1169	}	1615	}
1170	}	1616	}
1171		1617
1172	static void	1618	static void
1173	eio_dent_sort (eio_dirent *dents, int size, signed char score_bits, ino_t inode_bits)	1619	eio_dent_sort (eio_dirent *dents, int size, signed char score_bits, eio_ino_t inode_bits)
1174	{	1620	{
1175	if (size <= 1)	1621	if (size <= 1)
1176	return; /* our insertion sort relies on size > 0 */	1622	return; /* our insertion sort relies on size > 0 */
1177		1623
1178	/* first we use a radix sort, but only for dirs >= EIO_SORT_FAST */	1624	/* first we use a radix sort, but only for dirs >= EIO_SORT_FAST */
…		…
1186		1632
1187	/* read a full directory */	1633	/* read a full directory */
1188	static void	1634	static void
1189	eio__scandir (eio_req *req, etp_worker *self)	1635	eio__scandir (eio_req *req, etp_worker *self)
1190	{	1636	{
1191	DIR *dirp;
1192	EIO_STRUCT_DIRENT *entp;
1193	char *name, *names;	1637	char *name, *names;
1194	int namesalloc = 4096;	1638	int namesalloc = 4096 - sizeof (void *) * 4;
1195	int namesoffs = 0;	1639	int namesoffs = 0;
1196	int flags = req->int1;	1640	int flags = req->int1;
1197	eio_dirent *dents = 0;	1641	eio_dirent *dents = 0;
1198	int dentalloc = 128;	1642	int dentalloc = 128;
1199	int dentoffs = 0;	1643	int dentoffs = 0;
1200	ino_t inode_bits = 0;	1644	eio_ino_t inode_bits = 0;
		1645	#ifdef _WIN32
		1646	HANDLE dirp;
		1647	WIN32_FIND_DATA entp;
		1648	#else
		1649	DIR *dirp;
		1650	EIO_STRUCT_DIRENT *entp;
		1651	#endif
1201		1652
1202	req->result = -1;	1653	req->result = -1;
1203		1654
1204	if (!(flags & EIO_READDIR_DENTS))	1655	if (!(flags & EIO_READDIR_DENTS))
1205	flags &= ~(EIO_READDIR_DIRS_FIRST | EIO_READDIR_STAT_ORDER);	1656	flags &= ~(EIO_READDIR_DIRS_FIRST | EIO_READDIR_STAT_ORDER);
1206		1657
1207	X_LOCK (wrklock);	1658	#ifdef _WIN32
1208	/* the corresponding closedir is in ETP_WORKER_CLEAR */	1659	{
		1660	int len = strlen ((const char *)req->ptr1);
		1661	char *path = malloc (MAX_PATH);
		1662	const char *fmt;
		1663
		1664	if (!len)
		1665	fmt = "./*";
		1666	else if (((const char *)req->ptr1)[len - 1] == '/' || ((const char *)req->ptr1)[len - 1] == '\\')
		1667	fmt = "%s*";
		1668	else
		1669	fmt = "%s/*";
		1670
		1671	_snprintf (path, MAX_PATH, fmt, (const char *)req->ptr1);
		1672	dirp = FindFirstFile (path, &entp);
		1673	free (path);
		1674
		1675	if (dirp == INVALID_HANDLE_VALUE)
		1676	{
		1677	dirp = 0;
		1678
		1679	switch (GetLastError ())
		1680	{
		1681	case ERROR_FILE_NOT_FOUND:
		1682	req->result = 0;
		1683	break;
		1684
		1685	case ERROR_INVALID_NAME:
		1686	case ERROR_PATH_NOT_FOUND:
		1687	case ERROR_NO_MORE_FILES:
		1688	errno = ENOENT;
		1689	break;
		1690
		1691	case ERROR_NOT_ENOUGH_MEMORY:
		1692	errno = ENOMEM;
		1693	break;
		1694
		1695	default:
		1696	errno = EINVAL;
		1697	break;
		1698	}
		1699	}
		1700	}
		1701	#else
1209	self->dirp = dirp = opendir (req->ptr1);	1702	dirp = opendir (req->ptr1);
		1703	#endif
		1704
		1705	if (req->flags & EIO_FLAG_PTR1_FREE)
		1706	free (req->ptr1);
		1707
1210	req->flags |= EIO_FLAG_PTR1_FREE | EIO_FLAG_PTR2_FREE;	1708	req->flags |= EIO_FLAG_PTR1_FREE | EIO_FLAG_PTR2_FREE;
1211	req->ptr1 = dents = flags ? malloc (dentalloc * sizeof (eio_dirent)) : 0;	1709	req->ptr1 = dents = flags ? malloc (dentalloc * sizeof (eio_dirent)) : 0;
1212	req->ptr2 = names = malloc (namesalloc);	1710	req->ptr2 = names = malloc (namesalloc);
1213	X_UNLOCK (wrklock);
1214		1711
1215	if (dirp && names && (!flags || dents))	1712	if (dirp && names && (!flags || dents))
1216	for (;;)	1713	for (;;)
1217	{	1714	{
		1715	int done;
		1716
		1717	#ifdef _WIN32
		1718	done = !dirp;
		1719	#else
1218	errno = 0;	1720	errno = 0;
1219	entp = readdir (dirp);	1721	entp = readdir (dirp);
		1722	done = !entp;
		1723	#endif
1220		1724
1221	if (!entp)	1725	if (done)
1222	{	1726	{
		1727	#ifndef _WIN32
		1728	int old_errno = errno;
		1729	closedir (dirp);
		1730	errno = old_errno;
		1731
1223	if (errno)	1732	if (errno)
1224	break;	1733	break;
		1734	#endif
1225		1735
1226	/* sort etc. */	1736	/* sort etc. */
1227	req->int1 = flags;	1737	req->int1 = flags;
1228	req->result = dentoffs;	1738	req->result = dentoffs;
1229		1739
1230	if (flags & EIO_READDIR_STAT_ORDER)	1740	if (flags & EIO_READDIR_STAT_ORDER)
1231	eio_dent_sort (dents, dentoffs, 0, inode_bits); /* sort by inode exclusively */	1741	eio_dent_sort (dents, dentoffs, flags & EIO_READDIR_DIRS_FIRST ? 7 : 0, inode_bits);
1232	else if (flags & EIO_READDIR_DIRS_FIRST)	1742	else if (flags & EIO_READDIR_DIRS_FIRST)
1233	if (flags & EIO_READDIR_FOUND_UNKNOWN)	1743	if (flags & EIO_READDIR_FOUND_UNKNOWN)
1234	eio_dent_sort (dents, dentoffs, 7, inode_bits); /* sort by score and inode */	1744	eio_dent_sort (dents, dentoffs, 7, inode_bits); /* sort by score and inode */
1235	else	1745	else
1236	{	1746	{
…		…
1238	eio_dirent *oth = dents + dentoffs;	1748	eio_dirent *oth = dents + dentoffs;
1239	eio_dirent *dir = dents;	1749	eio_dirent *dir = dents;
1240		1750
1241	/* now partition dirs to the front, and non-dirs to the back */	1751	/* now partition dirs to the front, and non-dirs to the back */
1242	/* by walking from both sides and swapping if necessary */	1752	/* by walking from both sides and swapping if necessary */
1243	/* also clear score, so it doesn't influence sorting */
1244	while (oth > dir)	1753	while (oth > dir)
1245	{	1754	{
1246	if (dir->type == EIO_DT_DIR)	1755	if (dir->type == EIO_DT_DIR)
1247	++dir;	1756	++dir;
1248	else if ((--oth)->type == EIO_DT_DIR)	1757	else if ((--oth)->type == EIO_DT_DIR)
…		…
1251		1760
1252	++dir;	1761	++dir;
1253	}	1762	}
1254	}	1763	}
1255		1764
1256	/* now sort the dirs only */	1765	/* now sort the dirs only (dirs all have the same score) */
1257	eio_dent_sort (dents, dir - dents, 0, inode_bits);	1766	eio_dent_sort (dents, dir - dents, 0, inode_bits);
1258	}	1767	}
1259		1768
1260	break;	1769	break;
1261	}	1770	}
1262		1771
1263	/* now add the entry to our list(s) */	1772	/* now add the entry to our list(s) */
1264	name = entp->d_name;	1773	name = D_NAME (entp);
1265		1774
1266	/* skip . and .. entries */	1775	/* skip . and .. entries */
1267	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))	1776	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1268	{	1777	{
1269	int len = D_NAMLEN (entp) + 1;	1778	int len = D_NAMLEN (entp) + 1;
1270		1779
1271	while (expect_false (namesoffs + len > namesalloc))	1780	while (ecb_expect_false (namesoffs + len > namesalloc))
1272	{	1781	{
1273	namesalloc *= 2;	1782	namesalloc *= 2;
1274	X_LOCK (wrklock);
1275	req->ptr2 = names = realloc (names, namesalloc);	1783	req->ptr2 = names = realloc (names, namesalloc);
1276	X_UNLOCK (wrklock);
1277		1784
1278	if (!names)	1785	if (!names)
1279	break;	1786	break;
1280	}	1787	}
1281		1788
…		…
1283		1790
1284	if (dents)	1791	if (dents)
1285	{	1792	{
1286	struct eio_dirent *ent;	1793	struct eio_dirent *ent;
1287		1794
1288	if (expect_false (dentoffs == dentalloc))	1795	if (ecb_expect_false (dentoffs == dentalloc))
1289	{	1796	{
1290	dentalloc *= 2;	1797	dentalloc *= 2;
1291	X_LOCK (wrklock);
1292	req->ptr1 = dents = realloc (dents, dentalloc * sizeof (eio_dirent));	1798	req->ptr1 = dents = realloc (dents, dentalloc * sizeof (eio_dirent));
1293	X_UNLOCK (wrklock);
1294		1799
1295	if (!dents)	1800	if (!dents)
1296	break;	1801	break;
1297	}	1802	}
1298		1803
…		…
1378	if (EIO_CANCELLED (req))	1883	if (EIO_CANCELLED (req))
1379	{	1884	{
1380	errno = ECANCELED;	1885	errno = ECANCELED;
1381	break;	1886	break;
1382	}	1887	}
		1888
		1889	#ifdef _WIN32
		1890	if (!FindNextFile (dirp, &entp))
		1891	{
		1892	FindClose (dirp);
		1893	dirp = 0;
		1894	}
		1895	#endif
1383	}	1896	}
1384	}
1385
1386	#if !(_POSIX_MAPPED_FILES && _POSIX_SYNCHRONIZED_IO)
1387	# define eio__msync(a,b,c) ((errno = ENOSYS), -1)
1388	#else
1389
1390	int
1391	eio__msync (void *mem, size_t len, int flags)
1392	{
1393	if (EIO_MS_ASYNC != MS_SYNC
1394	|| EIO_MS_INVALIDATE != MS_INVALIDATE
1395	|| EIO_MS_SYNC != MS_SYNC)
1396	{
1397	flags = 0
1398	| (flags & EIO_MS_ASYNC ? MS_ASYNC : 0)
1399	| (flags & EIO_MS_INVALIDATE ? MS_INVALIDATE : 0)
1400	| (flags & EIO_MS_SYNC ? MS_SYNC : 0);
1401	}
1402
1403	return msync (mem, len, flags);
1404	}
1405
1406	#endif
1407
1408	int
1409	eio__mtouch (void *mem, size_t len, int flags)
1410	{
1411	intptr_t addr = (intptr_t)mem;
1412	intptr_t end = addr + len;
1413	#ifdef PAGESIZE
1414	const intptr_t page = PAGESIZE;
1415	#else
1416	static intptr_t page;
1417
1418	if (!page)
1419	page = sysconf (_SC_PAGESIZE);
1420	#endif
1421
1422	/* round down to start of page, although this is probably useless */
1423	addr &= ~(page - 1); /* assume page size is always a power of two */
1424
1425	if (addr < end)
1426	if (flags & EIO_MT_MODIFY) /* modify */
1427	do { *((volatile sig_atomic_t *)addr) |= 0; } while ((addr += page) < len);
1428	else
1429	do { *((volatile sig_atomic_t *)addr) ; } while ((addr += page) < len);
1430
1431	return 0;
1432	}	1897	}
1433		1898
1434	/*****************************************************************************/	1899	/*****************************************************************************/
1435		1900
1436	#define ALLOC(len) \	1901	#define ALLOC(len) \
…		…
1452	{	1917	{
1453	ETP_REQ *req;	1918	ETP_REQ *req;
1454	struct timespec ts;	1919	struct timespec ts;
1455	etp_worker *self = (etp_worker *)thr_arg;	1920	etp_worker *self = (etp_worker *)thr_arg;
1456		1921
		1922	#if HAVE_PRCTL_SET_NAME
		1923	prctl (PR_SET_NAME, (unsigned long)"eio_thread", 0, 0, 0);
		1924	#endif
		1925
1457	/* try to distribute timeouts somewhat randomly */	1926	/* try to distribute timeouts somewhat evenly */
1458	ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL);	1927	ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL);
1459		1928
1460	for (;;)	1929	for (;;)
1461	{	1930	{
		1931	ts.tv_sec = 0;
		1932
1462	X_LOCK (reqlock);	1933	X_LOCK (reqlock);
1463		1934
1464	for (;;)	1935	for (;;)
1465	{	1936	{
1466	self->req = req = reqq_shift (&req_queue);	1937	self->req = req = reqq_shift (&req_queue);
1467		1938
1468	if (req)	1939	if (req)
1469	break;	1940	break;
1470		1941
		1942	if (ts.tv_sec == 1) /* no request, but timeout detected, let's quit */
		1943	{
		1944	X_UNLOCK (reqlock);
		1945	X_LOCK (wrklock);
		1946	--started;
		1947	X_UNLOCK (wrklock);
		1948	goto quit;
		1949	}
		1950
1471	++idle;	1951	++idle;
1472		1952
1473	ts.tv_sec = time (0) + IDLE_TIMEOUT;	1953	if (idle <= max_idle)
1474	if (X_COND_TIMEDWAIT (reqwait, reqlock, ts) == ETIMEDOUT)	1954	/* we are allowed to idle, so do so without any timeout */
		1955	X_COND_WAIT (reqwait, reqlock);
		1956	else
1475	{	1957	{
1476	if (idle > max_idle)	1958	/* initialise timeout once */
1477	{	1959	if (!ts.tv_sec)
1478	--idle;	1960	ts.tv_sec = time (0) + idle_timeout;
1479	X_UNLOCK (reqlock);
1480	X_LOCK (wrklock);
1481	--started;
1482	X_UNLOCK (wrklock);
1483	goto quit;
1484	}
1485		1961
1486	/* we are allowed to idle, so do so without any timeout */
1487	X_COND_WAIT (reqwait, reqlock);	1962	if (X_COND_TIMEDWAIT (reqwait, reqlock, ts) == ETIMEDOUT)
		1963	ts.tv_sec = 1; /* assuming this is not a value computed above.,.. */
1488	}	1964	}
1489		1965
1490	--idle;	1966	--idle;
1491	}	1967	}
1492		1968
…		…
1495	X_UNLOCK (reqlock);	1971	X_UNLOCK (reqlock);
1496		1972
1497	if (req->type < 0)	1973	if (req->type < 0)
1498	goto quit;	1974	goto quit;
1499		1975
1500	if (!EIO_CANCELLED (req))
1501	ETP_EXECUTE (self, req);	1976	ETP_EXECUTE (self, req);
1502		1977
1503	X_LOCK (reslock);	1978	X_LOCK (reslock);
1504		1979
1505	++npending;	1980	++npending;
1506		1981
…		…
1521	return 0;	1996	return 0;
1522	}	1997	}
1523		1998
1524	/*****************************************************************************/	1999	/*****************************************************************************/
1525		2000
		2001	int ecb_cold
1526	int eio_init (void (*want_poll)(void), void (*done_poll)(void))	2002	eio_init (void (*want_poll)(void), void (*done_poll)(void))
1527	{	2003	{
		2004	#if !HAVE_PREADWRITE
		2005	X_MUTEX_CREATE (preadwritelock);
		2006	#endif
		2007
1528	return etp_init (want_poll, done_poll);	2008	return etp_init (want_poll, done_poll);
1529	}	2009	}
1530		2010
		2011	ecb_inline void
1531	static void eio_api_destroy (eio_req *req)	2012	eio_api_destroy (eio_req *req)
1532	{	2013	{
1533	free (req);	2014	free (req);
1534	}	2015	}
1535		2016
1536	#define REQ(rtype) \	2017	#define REQ(rtype) \
…		…
1555	{ \	2036	{ \
1556	eio_api_destroy (req); \	2037	eio_api_destroy (req); \
1557	return 0; \	2038	return 0; \
1558	}	2039	}
1559		2040
		2041	static void
1560	static void eio_execute (etp_worker *self, eio_req *req)	2042	eio_execute (etp_worker *self, eio_req *req)
1561	{	2043	{
1562	errno = 0;	2044	if (ecb_expect_false (EIO_CANCELLED (req)))
		2045	{
		2046	req->result = -1;
		2047	req->errorno = ECANCELED;
		2048	return;
		2049	}
1563		2050
1564	switch (req->type)	2051	switch (req->type)
1565	{	2052	{
1566	case EIO_READ: ALLOC (req->size);	2053	case EIO_READ: ALLOC (req->size);
1567	req->result = req->offs >= 0	2054	req->result = req->offs >= 0
…		…
1570	case EIO_WRITE: req->result = req->offs >= 0	2057	case EIO_WRITE: req->result = req->offs >= 0
1571	? pwrite (req->int1, req->ptr2, req->size, req->offs)	2058	? pwrite (req->int1, req->ptr2, req->size, req->offs)
1572	: write (req->int1, req->ptr2, req->size); break;	2059	: write (req->int1, req->ptr2, req->size); break;
1573		2060
1574	case EIO_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;	2061	case EIO_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1575	case EIO_SENDFILE: req->result = eio__sendfile (req->int1, req->int2, req->offs, req->size, self); break;	2062	case EIO_SENDFILE: req->result = eio__sendfile (req->int1, req->int2, req->offs, req->size); break;
1576		2063
1577	case EIO_STAT: ALLOC (sizeof (EIO_STRUCT_STAT));	2064	case EIO_STAT: ALLOC (sizeof (EIO_STRUCT_STAT));
1578	req->result = stat (req->ptr1, (EIO_STRUCT_STAT *)req->ptr2); break;	2065	req->result = stat (req->ptr1, (EIO_STRUCT_STAT *)req->ptr2); break;
1579	case EIO_LSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));	2066	case EIO_LSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));
1580	req->result = lstat (req->ptr1, (EIO_STRUCT_STAT *)req->ptr2); break;	2067	req->result = lstat (req->ptr1, (EIO_STRUCT_STAT *)req->ptr2); break;
…		…
1600	case EIO_RMDIR: req->result = rmdir (req->ptr1); break;	2087	case EIO_RMDIR: req->result = rmdir (req->ptr1); break;
1601	case EIO_MKDIR: req->result = mkdir (req->ptr1, (mode_t)req->int2); break;	2088	case EIO_MKDIR: req->result = mkdir (req->ptr1, (mode_t)req->int2); break;
1602	case EIO_RENAME: req->result = rename (req->ptr1, req->ptr2); break;	2089	case EIO_RENAME: req->result = rename (req->ptr1, req->ptr2); break;
1603	case EIO_LINK: req->result = link (req->ptr1, req->ptr2); break;	2090	case EIO_LINK: req->result = link (req->ptr1, req->ptr2); break;
1604	case EIO_SYMLINK: req->result = symlink (req->ptr1, req->ptr2); break;	2091	case EIO_SYMLINK: req->result = symlink (req->ptr1, req->ptr2); break;
1605	case EIO_MKNOD: req->result = mknod (req->ptr1, (mode_t)req->int2, (dev_t)req->int3); break;	2092	case EIO_MKNOD: req->result = mknod (req->ptr1, (mode_t)req->int2, (dev_t)req->offs); break;
1606		2093
		2094	case EIO_REALPATH: eio__realpath (req, self); break;
		2095
1607	case EIO_READLINK: ALLOC (NAME_MAX);	2096	case EIO_READLINK: ALLOC (PATH_MAX);
1608	req->result = readlink (req->ptr1, req->ptr2, NAME_MAX); break;	2097	req->result = readlink (req->ptr1, req->ptr2, PATH_MAX); break;
1609		2098
1610	case EIO_SYNC: req->result = 0; sync (); break;	2099	case EIO_SYNC: req->result = 0; sync (); break;
1611	case EIO_FSYNC: req->result = fsync (req->int1); break;	2100	case EIO_FSYNC: req->result = fsync (req->int1); break;
1612	case EIO_FDATASYNC: req->result = fdatasync (req->int1); break;	2101	case EIO_FDATASYNC: req->result = fdatasync (req->int1); break;
		2102	case EIO_SYNCFS: req->result = eio__syncfs (req->int1); break;
		2103	case EIO_SYNC_FILE_RANGE: req->result = eio__sync_file_range (req->int1, req->offs, req->size, req->int2); break;
1613	case EIO_MSYNC: req->result = eio__msync (req->ptr2, req->size, req->int1); break;	2104	case EIO_MSYNC: req->result = eio__msync (req->ptr2, req->size, req->int1); break;
		2105	case EIO_MTOUCH: req->result = eio__mtouch (req); break;
1614	case EIO_MTOUCH: req->result = eio__mtouch (req->ptr2, req->size, req->int1); break;	2106	case EIO_MLOCK: req->result = eio__mlock (req->ptr2, req->size); break;
1615	case EIO_SYNC_FILE_RANGE: req->result = eio__sync_file_range (req->int1, req->offs, req->size, req->int2); break;	2107	case EIO_MLOCKALL: req->result = eio__mlockall (req->int1); break;
		2108	case EIO_FALLOCATE: req->result = eio__fallocate (req->int1, req->int2, req->offs, req->size); break;
1616		2109
1617	case EIO_READDIR: eio__scandir (req, self); break;	2110	case EIO_READDIR: eio__scandir (req, self); break;
1618		2111
1619	case EIO_BUSY:	2112	case EIO_BUSY:
1620	#ifdef _WIN32	2113	#ifdef _WIN32
1621	Sleep (req->nv1 * 1000.);	2114	Sleep (req->nv1 * 1e3);
1622	#else	2115	#else
1623	{	2116	{
1624	struct timeval tv;	2117	struct timeval tv;
1625		2118
1626	tv.tv_sec = req->nv1;	2119	tv.tv_sec = req->nv1;
1627	tv.tv_usec = (req->nv1 - tv.tv_sec) * 1000000.;	2120	tv.tv_usec = (req->nv1 - tv.tv_sec) * 1e6;
1628		2121
1629	req->result = select (0, 0, 0, 0, &tv);	2122	req->result = select (0, 0, 0, 0, &tv);
1630	}	2123	}
1631	#endif	2124	#endif
1632	break;	2125	break;
…		…
1647	times = tv;	2140	times = tv;
1648	}	2141	}
1649	else	2142	else
1650	times = 0;	2143	times = 0;
1651		2144
1652
1653	req->result = req->type == EIO_FUTIME	2145	req->result = req->type == EIO_FUTIME
1654	? futimes (req->int1, times)	2146	? futimes (req->int1, times)
1655	: utimes (req->ptr1, times);	2147	: utimes (req->ptr1, times);
1656	}	2148	}
1657	break;	2149	break;
…		…
1662	case EIO_NOP:	2154	case EIO_NOP:
1663	req->result = 0;	2155	req->result = 0;
1664	break;	2156	break;
1665		2157
1666	case EIO_CUSTOM:	2158	case EIO_CUSTOM:
1667	((void (*)(eio_req *))req->feed) (req);	2159	req->feed (req);
1668	break;	2160	break;
1669		2161
1670	default:	2162	default:
		2163	errno = ENOSYS;
1671	req->result = -1;	2164	req->result = -1;
1672	break;	2165	break;
1673	}	2166	}
1674		2167
1675	req->errorno = errno;	2168	req->errorno = errno;
…		…
1700	eio_req *eio_msync (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data)	2193	eio_req *eio_msync (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data)
1701	{	2194	{
1702	REQ (EIO_MSYNC); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND;	2195	REQ (EIO_MSYNC); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND;
1703	}	2196	}
1704		2197
		2198	eio_req *eio_fdatasync (int fd, int pri, eio_cb cb, void *data)
		2199	{
		2200	REQ (EIO_FDATASYNC); req->int1 = fd; SEND;
		2201	}
		2202
		2203	eio_req *eio_syncfs (int fd, int pri, eio_cb cb, void *data)
		2204	{
		2205	REQ (EIO_SYNCFS); req->int1 = fd; SEND;
		2206	}
		2207
		2208	eio_req *eio_sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags, int pri, eio_cb cb, void *data)
		2209	{
		2210	REQ (EIO_SYNC_FILE_RANGE); req->int1 = fd; req->offs = offset; req->size = nbytes; req->int2 = flags; SEND;
		2211	}
		2212
1705	eio_req *eio_mtouch (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data)	2213	eio_req *eio_mtouch (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data)
1706	{	2214	{
1707	REQ (EIO_MTOUCH); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND;	2215	REQ (EIO_MTOUCH); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND;
1708	}	2216	}
1709		2217
1710	eio_req *eio_sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags, int pri, eio_cb cb, void *data)	2218	eio_req *eio_mlock (void *addr, size_t length, int pri, eio_cb cb, void *data)
1711	{	2219	{
1712	REQ (EIO_SYNC_FILE_RANGE); req->int1 = fd; req->offs = offset; req->size = nbytes; req->int2 = flags; SEND;	2220	REQ (EIO_MLOCK); req->ptr2 = addr; req->size = length; SEND;
1713	}	2221	}
1714		2222
1715	eio_req *eio_fdatasync (int fd, int pri, eio_cb cb, void *data)	2223	eio_req *eio_mlockall (int flags, int pri, eio_cb cb, void *data)
1716	{	2224	{
1717	REQ (EIO_FDATASYNC); req->int1 = fd; SEND;	2225	REQ (EIO_MLOCKALL); req->int1 = flags; SEND;
		2226	}
		2227
		2228	eio_req *eio_fallocate (int fd, int mode, off_t offset, size_t len, int pri, eio_cb cb, void *data)
		2229	{
		2230	REQ (EIO_FALLOCATE); req->int1 = fd; req->int2 = mode; req->offs = offset; req->size = len; SEND;
1718	}	2231	}
1719		2232
1720	eio_req *eio_close (int fd, int pri, eio_cb cb, void *data)	2233	eio_req *eio_close (int fd, int pri, eio_cb cb, void *data)
1721	{	2234	{
1722	REQ (EIO_CLOSE); req->int1 = fd; SEND;	2235	REQ (EIO_CLOSE); req->int1 = fd; SEND;
…		…
1760	eio_req *eio_fchmod (int fd, mode_t mode, int pri, eio_cb cb, void *data)	2273	eio_req *eio_fchmod (int fd, mode_t mode, int pri, eio_cb cb, void *data)
1761	{	2274	{
1762	REQ (EIO_FCHMOD); req->int1 = fd; req->int2 = (long)mode; SEND;	2275	REQ (EIO_FCHMOD); req->int1 = fd; req->int2 = (long)mode; SEND;
1763	}	2276	}
1764		2277
1765	eio_req *eio_fchown (int fd, uid_t uid, gid_t gid, int pri, eio_cb cb, void *data)	2278	eio_req *eio_fchown (int fd, eio_uid_t uid, eio_gid_t gid, int pri, eio_cb cb, void *data)
1766	{	2279	{
1767	REQ (EIO_FCHOWN); req->int1 = fd; req->int2 = (long)uid; req->int3 = (long)gid; SEND;	2280	REQ (EIO_FCHOWN); req->int1 = fd; req->int2 = (long)uid; req->int3 = (long)gid; SEND;
1768	}	2281	}
1769		2282
1770	eio_req *eio_dup2 (int fd, int fd2, int pri, eio_cb cb, void *data)	2283	eio_req *eio_dup2 (int fd, int fd2, int pri, eio_cb cb, void *data)
…		…
1790	eio_req *eio_truncate (const char *path, off_t offset, int pri, eio_cb cb, void *data)	2303	eio_req *eio_truncate (const char *path, off_t offset, int pri, eio_cb cb, void *data)
1791	{	2304	{
1792	REQ (EIO_TRUNCATE); PATH; req->offs = offset; SEND;	2305	REQ (EIO_TRUNCATE); PATH; req->offs = offset; SEND;
1793	}	2306	}
1794		2307
1795	eio_req *eio_chown (const char *path, uid_t uid, gid_t gid, int pri, eio_cb cb, void *data)	2308	eio_req *eio_chown (const char *path, eio_uid_t uid, eio_gid_t gid, int pri, eio_cb cb, void *data)
1796	{	2309	{
1797	REQ (EIO_CHOWN); PATH; req->int2 = (long)uid; req->int3 = (long)gid; SEND;	2310	REQ (EIO_CHOWN); PATH; req->int2 = (long)uid; req->int3 = (long)gid; SEND;
1798	}	2311	}
1799		2312
1800	eio_req *eio_chmod (const char *path, mode_t mode, int pri, eio_cb cb, void *data)	2313	eio_req *eio_chmod (const char *path, mode_t mode, int pri, eio_cb cb, void *data)
…		…
1816	eio_req *eio_readlink (const char *path, int pri, eio_cb cb, void *data)	2329	eio_req *eio_readlink (const char *path, int pri, eio_cb cb, void *data)
1817	{	2330	{
1818	return eio__1path (EIO_READLINK, path, pri, cb, data);	2331	return eio__1path (EIO_READLINK, path, pri, cb, data);
1819	}	2332	}
1820		2333
		2334	eio_req *eio_realpath (const char *path, int pri, eio_cb cb, void *data)
		2335	{
		2336	return eio__1path (EIO_REALPATH, path, pri, cb, data);
		2337	}
		2338
1821	eio_req *eio_stat (const char *path, int pri, eio_cb cb, void *data)	2339	eio_req *eio_stat (const char *path, int pri, eio_cb cb, void *data)
1822	{	2340	{
1823	return eio__1path (EIO_STAT, path, pri, cb, data);	2341	return eio__1path (EIO_STAT, path, pri, cb, data);
1824	}	2342	}
1825		2343
…		…
1848	REQ (EIO_READDIR); PATH; req->int1 = flags; SEND;	2366	REQ (EIO_READDIR); PATH; req->int1 = flags; SEND;
1849	}	2367	}
1850		2368
1851	eio_req *eio_mknod (const char *path, mode_t mode, dev_t dev, int pri, eio_cb cb, void *data)	2369	eio_req *eio_mknod (const char *path, mode_t mode, dev_t dev, int pri, eio_cb cb, void *data)
1852	{	2370	{
1853	REQ (EIO_MKNOD); PATH; req->int2 = (long)mode; req->int3 = (long)dev; SEND;	2371	REQ (EIO_MKNOD); PATH; req->int2 = (long)mode; req->offs = (off_t)dev; SEND;
1854	}	2372	}
1855		2373
1856	static eio_req *	2374	static eio_req *
1857	eio__2path (int type, const char *path, const char *new_path, int pri, eio_cb cb, void *data)	2375	eio__2path (int type, const char *path, const char *new_path, int pri, eio_cb cb, void *data)
1858	{	2376	{
…		…
1882	eio_req *eio_rename (const char *path, const char *new_path, int pri, eio_cb cb, void *data)	2400	eio_req *eio_rename (const char *path, const char *new_path, int pri, eio_cb cb, void *data)
1883	{	2401	{
1884	return eio__2path (EIO_RENAME, path, new_path, pri, cb, data);	2402	return eio__2path (EIO_RENAME, path, new_path, pri, cb, data);
1885	}	2403	}
1886		2404
1887	eio_req *eio_custom (eio_cb execute, int pri, eio_cb cb, void *data)	2405	eio_req *eio_custom (void (*execute)(eio_req *), int pri, eio_cb cb, void *data)
1888	{	2406	{
1889	REQ (EIO_CUSTOM); req->feed = (void (*)(eio_req *))execute; SEND;	2407	REQ (EIO_CUSTOM); req->feed = execute; SEND;
1890	}	2408	}
1891		2409
1892	#endif	2410	#endif
1893		2411
1894	eio_req *eio_grp (eio_cb cb, void *data)	2412	eio_req *eio_grp (eio_cb cb, void *data)
…		…
1903	#undef SEND	2421	#undef SEND
1904		2422
1905	/*****************************************************************************/	2423	/*****************************************************************************/
1906	/* grp functions */	2424	/* grp functions */
1907		2425
		2426	void
1908	void eio_grp_feed (eio_req *grp, void (*feed)(eio_req *req), int limit)	2427	eio_grp_feed (eio_req *grp, void (*feed)(eio_req *req), int limit)
1909	{	2428	{
1910	grp->int2 = limit;	2429	grp->int2 = limit;
1911	grp->feed = feed;	2430	grp->feed = feed;
1912		2431
1913	grp_try_feed (grp);	2432	grp_try_feed (grp);
1914	}	2433	}
1915		2434
		2435	void
1916	void eio_grp_limit (eio_req *grp, int limit)	2436	eio_grp_limit (eio_req *grp, int limit)
1917	{	2437	{
1918	grp->int2 = limit;	2438	grp->int2 = limit;
1919		2439
1920	grp_try_feed (grp);	2440	grp_try_feed (grp);
1921	}	2441	}
1922		2442
		2443	void
1923	void eio_grp_add (eio_req *grp, eio_req *req)	2444	eio_grp_add (eio_req *grp, eio_req *req)
1924	{	2445	{
1925	assert (("cannot add requests to IO::AIO::GRP after the group finished", grp->int1 != 2));	2446	assert (("cannot add requests to IO::AIO::GRP after the group finished", grp->int1 != 2));
1926		2447
1927	grp->flags |= EIO_FLAG_GROUPADD;	2448	grp->flags |= EIO_FLAG_GROUPADD;
1928		2449
…		…
1939	}	2460	}
1940		2461
1941	/*****************************************************************************/	2462	/*****************************************************************************/
1942	/* misc garbage */	2463	/* misc garbage */
1943		2464
		2465	eio_ssize_t
1944	ssize_t eio_sendfile_sync (int ofd, int ifd, off_t offset, size_t count)	2466	eio_sendfile_sync (int ofd, int ifd, off_t offset, size_t count)
1945	{	2467	{
1946	etp_worker wrk;
1947	ssize_t ret;
1948
1949	wrk.dbuf = 0;
1950
1951	ret = eio__sendfile (ofd, ifd, offset, count, &wrk);	2468	return eio__sendfile (ofd, ifd, offset, count);
1952
1953	if (wrk.dbuf)
1954	free (wrk.dbuf);
1955
1956	return ret;
1957	}	2469	}
1958		2470

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