ViewVC Help

View File | Revision Log | Show Annotations | Download File

/cvs/cvsroot/libeio/eio.c

Comparing cvsroot/libeio/eio.c (file contents):
Revision 1.25 by root, Tue Sep 30 17:23:24 2008 UTC vs.
Revision 1.92 by root, Sun Jul 17 18:27:17 2011 UTC

1	/*	1	/*
2	* libeio implementation	2	* libeio implementation
3	*	3	*
4	* Copyright (c) 2007,2008 Marc Alexander Lehmann <libeio@schmorp.de>	4	* Copyright (c) 2007,2008,2009,2010,2011 Marc Alexander Lehmann <libeio@schmorp.de>
5	* All rights reserved.	5	* All rights reserved.
6	*	6	*
7	* Redistribution and use in source and binary forms, with or without modifica-	7	* Redistribution and use in source and binary forms, with or without modifica-
8	* tion, are permitted provided that the following conditions are met:	8	* tion, are permitted provided that the following conditions are met:
9	*	9	*
…		…
35	* and other provisions required by the GPL. If you do not delete the	35	* and other provisions required by the GPL. If you do not delete the
36	* provisions above, a recipient may use your version of this file under	36	* provisions above, a recipient may use your version of this file under
37	* either the BSD or the GPL.	37	* either the BSD or the GPL.
38	*/	38	*/
39		39
		40	#ifndef _WIN32
		41	# include "config.h"
		42	#endif
		43
40	#include "eio.h"	44	#include "eio.h"
		45	#include "ecb.h"
		46
		47	#ifdef EIO_STACKSIZE
		48	# define XTHREAD_STACKSIZE EIO_STACKSIZE
		49	#endif
41	#include "xthread.h"	50	#include "xthread.h"
42		51
43	#include <errno.h>	52	#include <errno.h>
44	#include <stddef.h>	53	#include <stddef.h>
45	#include <stdlib.h>	54	#include <stdlib.h>
…		…
49	#include <sys/stat.h>	58	#include <sys/stat.h>
50	#include <limits.h>	59	#include <limits.h>
51	#include <fcntl.h>	60	#include <fcntl.h>
52	#include <assert.h>	61	#include <assert.h>
53		62
		63	/* intptr_t comes from unistd.h, says POSIX/UNIX/tradition */
		64	/* intptr_t only comes from stdint.h, says idiot openbsd coder */
		65	#if HAVE_STDINT_H
		66	# include <stdint.h>
		67	#endif
		68
		69	#ifndef ECANCELED
		70	# define ECANCELED EDOM
		71	#endif
		72	#ifndef ELOOP
		73	# define ELOOP EDOM
		74	#endif
		75
		76	static void eio_destroy (eio_req *req);
		77
54	#ifndef EIO_FINISH	78	#ifndef EIO_FINISH
55	# define EIO_FINISH(req) ((req)->finish) && !EIO_CANCELLED (req) ? (req)->finish (req) : 0	79	# define EIO_FINISH(req) ((req)->finish) && !EIO_CANCELLED (req) ? (req)->finish (req) : 0
56	#endif	80	#endif
57		81
58	#ifndef EIO_DESTROY	82	#ifndef EIO_DESTROY
…		…
61		85
62	#ifndef EIO_FEED	86	#ifndef EIO_FEED
63	# define EIO_FEED(req) do { if ((req)->feed ) (req)->feed (req); } while (0)	87	# define EIO_FEED(req) do { if ((req)->feed ) (req)->feed (req); } while (0)
64	#endif	88	#endif
65		89
		90	#ifndef EIO_FD_TO_WIN32_HANDLE
		91	# define EIO_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
		92	#endif
		93	#ifndef EIO_WIN32_HANDLE_TO_FD
		94	# define EIO_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
		95	#endif
		96
		97	#define EIO_ERRNO(errval,retval) ((errno = errval), retval)
		98
		99	#define EIO_ENOSYS() EIO_ERRNO (ENOSYS, -1)
		100
66	#ifdef _WIN32	101	#ifdef _WIN32
67		102
68	/*doh*/	103	#undef PAGESIZE
		104	#define PAGESIZE 4096 /* GetSystemInfo? */
		105
		106	#ifdef EIO_STRUCT_STATI64
		107	#define stat(path,buf) _stati64 (path,buf)
		108	#define fstat(fd,buf) _fstati64 (path,buf)
		109	#endif
		110	#define lstat(path,buf) stat (path,buf)
		111	#define fsync(fd) (FlushFileBuffers ((HANDLE)EIO_FD_TO_WIN32_HANDLE (fd)) ? 0 : EIO_ERRNO (EBADF, -1))
		112	#define mkdir(path,mode) _mkdir (path)
		113	#define link(old,neu) (CreateHardLink (neu, old, 0) ? 0 : EIO_ERRNO (ENOENT, -1))
		114
		115	#define chmod(path,mode) _chmod (path, mode)
		116	#define dup(fd) _dup (fd)
		117	#define dup2(fd1,fd2) _dup2 (fd1, fd2)
		118
		119	#define fchmod(fd,mode) EIO_ENOSYS ()
		120	#define chown(path,uid,gid) EIO_ENOSYS ()
		121	#define fchown(fd,uid,gid) EIO_ENOSYS ()
		122	#define truncate(path,offs) EIO_ENOSYS () /* far-miss: SetEndOfFile */
		123	#define ftruncate(fd,offs) EIO_ENOSYS () /* near-miss: SetEndOfFile */
		124	#define mknod(path,mode,dev) EIO_ENOSYS ()
		125	#define sync() EIO_ENOSYS ()
		126	#define readlink(path,buf,s) EIO_ENOSYS ()
		127	#define statvfs(path,buf) EIO_ENOSYS ()
		128	#define fstatvfs(fd,buf) EIO_ENOSYS ()
		129
		130	/* we could even stat and see if it exists */
		131	static int
		132	symlink (const char *old, const char *neu)
		133	{
		134	#if WINVER >= 0x0600
		135	if (CreateSymbolicLink (neu, old, 1))
		136	return 0;
		137
		138	if (CreateSymbolicLink (neu, old, 0))
		139	return 0;
		140	#endif
		141
		142	return EIO_ERRNO (ENOENT, -1);
		143	}
		144
		145	/* POSIX API only */
		146	#define CreateHardLink(neu,old,flags) 0
		147	#define CreateSymbolicLink(neu,old,flags) 0
		148
		149	struct statvfs
		150	{
		151	int dummy;
		152	};
		153
		154	#define DT_DIR EIO_DT_DIR
		155	#define DT_REG EIO_DT_REG
		156	#define D_NAME(entp) entp.cFileName
		157	#define D_TYPE(entp) (entp.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY ? DT_DIR : DT_REG)
69		158
70	#else	159	#else
71		160
72	# include "config.h"
73	# include <sys/time.h>	161	#include <sys/time.h>
74	# include <sys/select.h>	162	#include <sys/select.h>
		163	#include <sys/statvfs.h>
75	# include <unistd.h>	164	#include <unistd.h>
76	# include <utime.h>	165	#include <utime.h>
77	# include <signal.h>	166	#include <signal.h>
78	# include <dirent.h>	167	#include <dirent.h>
79		168
		169	#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
		170	#include <sys/mman.h>
		171	#endif
		172
		173	#define D_NAME(entp) entp->d_name
		174
		175	/* POSIX_SOURCE is useless on bsd's, and XOPEN_SOURCE is unreliable there, too */
		176	#if __FreeBSD__ || defined __NetBSD__ || defined __OpenBSD__
		177	#define _DIRENT_HAVE_D_TYPE /* sigh */
		178	#define D_INO(de) (de)->d_fileno
		179	#define D_NAMLEN(de) (de)->d_namlen
		180	#elif __linux || defined d_ino || _XOPEN_SOURCE >= 600
		181	#define D_INO(de) (de)->d_ino
		182	#endif
		183
		184	#ifdef _D_EXACT_NAMLEN
		185	#undef D_NAMLEN
		186	#define D_NAMLEN(de) _D_EXACT_NAMLEN (de)
		187	#endif
		188
		189	#ifdef _DIRENT_HAVE_D_TYPE
		190	#define D_TYPE(de) (de)->d_type
		191	#endif
		192
80	# ifndef EIO_STRUCT_DIRENT	193	#ifndef EIO_STRUCT_DIRENT
81	# define EIO_STRUCT_DIRENT struct dirent	194	#define EIO_STRUCT_DIRENT struct dirent
82	# endif	195	#endif
83		196
84	#endif	197	#endif
85		198
86	#if HAVE_SENDFILE	199	#if HAVE_SENDFILE
87	# if __linux	200	# if __linux
88	# include <sys/sendfile.h>	201	# include <sys/sendfile.h>
89	# elif __freebsd	202	# elif __FreeBSD__ || defined __APPLE__
90	# include <sys/socket.h>	203	# include <sys/socket.h>
91	# include <sys/uio.h>	204	# include <sys/uio.h>
92	# elif __hpux	205	# elif __hpux
93	# include <sys/socket.h>	206	# include <sys/socket.h>
94	# elif __solaris /* not yet */	207	# elif __solaris
95	# include <sys/sendfile.h>	208	# include <sys/sendfile.h>
96	# else	209	# else
97	# error sendfile support requested but not available	210	# error sendfile support requested but not available
98	# endif	211	# endif
99	#endif	212	#endif
100		213
101	/* number of seconds after which an idle threads exit */	214	#ifndef D_TYPE
102	#define IDLE_TIMEOUT 10	215	# define D_TYPE(de) 0
		216	#endif
		217	#ifndef D_INO
		218	# define D_INO(de) 0
		219	#endif
		220	#ifndef D_NAMLEN
		221	# define D_NAMLEN(entp) strlen (D_NAME (entp))
		222	#endif
103		223
104	/* used for struct dirent, AIX doesn't provide it */	224	/* used for struct dirent, AIX doesn't provide it */
105	#ifndef NAME_MAX	225	#ifndef NAME_MAX
106	# define NAME_MAX 4096	226	# define NAME_MAX 4096
		227	#endif
		228
		229	/* used for readlink etc. */
		230	#ifndef PATH_MAX
		231	# define PATH_MAX 4096
107	#endif	232	#endif
108		233
109	/* buffer size for various temporary buffers */	234	/* buffer size for various temporary buffers */
110	#define EIO_BUFSIZE 65536	235	#define EIO_BUFSIZE 65536
111		236
…		…
118	if (!eio_buf) \	243	if (!eio_buf) \
119	return -1;	244	return -1;
120		245
121	#define EIO_TICKS ((1000000 + 1023) >> 10)	246	#define EIO_TICKS ((1000000 + 1023) >> 10)
122		247
123	/*****************************************************************************/
124
125	#if __GNUC__ >= 3
126	# define expect(expr,value) __builtin_expect ((expr),(value))
127	#else
128	# define expect(expr,value) (expr)
129	#endif
130
131	#define expect_false(expr) expect ((expr) != 0, 0)
132	#define expect_true(expr) expect ((expr) != 0, 1)
133
134	/*****************************************************************************/
135
136	#define ETP_PRI_MIN EIO_PRI_MIN	248	#define ETP_PRI_MIN EIO_PRI_MIN
137	#define ETP_PRI_MAX EIO_PRI_MAX	249	#define ETP_PRI_MAX EIO_PRI_MAX
138		250
139	struct etp_worker;	251	struct etp_worker;
140		252
…		…
148	#define ETP_WORKER_CLEAR(req) \	260	#define ETP_WORKER_CLEAR(req) \
149	if (wrk->dbuf) \	261	if (wrk->dbuf) \
150	{ \	262	{ \
151	free (wrk->dbuf); \	263	free (wrk->dbuf); \
152	wrk->dbuf = 0; \	264	wrk->dbuf = 0; \
153	} \
154	\
155	if (wrk->dirp) \
156	{ \
157	closedir (wrk->dirp); \
158	wrk->dirp = 0; \
159	}	265	}
		266
160	#define ETP_WORKER_COMMON \	267	#define ETP_WORKER_COMMON \
161	void *dbuf; \	268	void *dbuf;
162	DIR *dirp;
163		269
164	/*****************************************************************************/	270	/*****************************************************************************/
165		271
166	#define ETP_NUM_PRI (ETP_PRI_MAX - ETP_PRI_MIN + 1)	272	#define ETP_NUM_PRI (ETP_PRI_MAX - ETP_PRI_MIN + 1)
167		273
168	/* calculcate time difference in ~1/EIO_TICKS of a second */	274	/* calculate time difference in ~1/EIO_TICKS of a second */
		275	ecb_inline int
169	static int tvdiff (struct timeval *tv1, struct timeval *tv2)	276	tvdiff (struct timeval *tv1, struct timeval *tv2)
170	{	277	{
171	return (tv2->tv_sec - tv1->tv_sec ) * EIO_TICKS	278	return (tv2->tv_sec - tv1->tv_sec ) * EIO_TICKS
172	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);	279	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
173	}	280	}
174		281
…		…
181	static unsigned int max_poll_reqs; /* reslock */	288	static unsigned int max_poll_reqs; /* reslock */
182		289
183	static volatile unsigned int nreqs; /* reqlock */	290	static volatile unsigned int nreqs; /* reqlock */
184	static volatile unsigned int nready; /* reqlock */	291	static volatile unsigned int nready; /* reqlock */
185	static volatile unsigned int npending; /* reqlock */	292	static volatile unsigned int npending; /* reqlock */
186	static volatile unsigned int max_idle = 4;	293	static volatile unsigned int max_idle = 4; /* maximum number of threads that can idle indefinitely */
		294	static volatile unsigned int idle_timeout = 10; /* number of seconds after which an idle threads exit */
187		295
188	static mutex_t wrklock = X_MUTEX_INIT;	296	static xmutex_t wrklock;
189	static mutex_t reslock = X_MUTEX_INIT;	297	static xmutex_t reslock;
190	static mutex_t reqlock = X_MUTEX_INIT;	298	static xmutex_t reqlock;
191	static cond_t reqwait = X_COND_INIT;	299	static xcond_t reqwait;
192		300
193	#if !HAVE_PREADWRITE	301	#if !HAVE_PREADWRITE
194	/*	302	/*
195	* make our pread/pwrite emulation safe against themselves, but not against	303	* make our pread/pwrite emulation safe against themselves, but not against
196	* normal read/write by using a mutex. slows down execution a lot,	304	* normal read/write by using a mutex. slows down execution a lot,
197	* but that's your problem, not mine.	305	* but that's your problem, not mine.
198	*/	306	*/
199	static mutex_t preadwritelock = X_MUTEX_INIT;	307	static xmutex_t preadwritelock = X_MUTEX_INIT;
200	#endif	308	#endif
201		309
202	typedef struct etp_worker	310	typedef struct etp_worker
203	{	311	{
204	/* locked by wrklock */	312	/* locked by wrklock */
205	struct etp_worker *prev, *next;	313	struct etp_worker *prev, *next;
206		314
207	thread_t tid;	315	xthread_t tid;
208		316
209	/* locked by reslock, reqlock or wrklock */	317	/* locked by reslock, reqlock or wrklock */
210	ETP_REQ *req; /* currently processed request */	318	ETP_REQ *req; /* currently processed request */
211		319
212	ETP_WORKER_COMMON	320	ETP_WORKER_COMMON
…		…
217	#define ETP_WORKER_LOCK(wrk) X_LOCK (wrklock)	325	#define ETP_WORKER_LOCK(wrk) X_LOCK (wrklock)
218	#define ETP_WORKER_UNLOCK(wrk) X_UNLOCK (wrklock)	326	#define ETP_WORKER_UNLOCK(wrk) X_UNLOCK (wrklock)
219		327
220	/* worker threads management */	328	/* worker threads management */
221		329
		330	static void ecb_cold
222	static void etp_worker_clear (etp_worker *wrk)	331	etp_worker_clear (etp_worker *wrk)
223	{	332	{
224	ETP_WORKER_CLEAR (wrk);	333	ETP_WORKER_CLEAR (wrk);
225	}	334	}
226		335
		336	static void ecb_cold
227	static void etp_worker_free (etp_worker *wrk)	337	etp_worker_free (etp_worker *wrk)
228	{	338	{
229	wrk->next->prev = wrk->prev;	339	wrk->next->prev = wrk->prev;
230	wrk->prev->next = wrk->next;	340	wrk->prev->next = wrk->next;
231		341
232	free (wrk);	342	free (wrk);
233	}	343	}
234		344
235	static unsigned int etp_nreqs (void)	345	static unsigned int
		346	etp_nreqs (void)
236	{	347	{
237	int retval;	348	int retval;
238	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);	349	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
239	retval = nreqs;	350	retval = nreqs;
240	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);	351	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
241	return retval;	352	return retval;
242	}	353	}
243		354
244	static unsigned int etp_nready (void)	355	static unsigned int
		356	etp_nready (void)
245	{	357	{
246	unsigned int retval;	358	unsigned int retval;
247		359
248	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);	360	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
249	retval = nready;	361	retval = nready;
250	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);	362	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
251		363
252	return retval;	364	return retval;
253	}	365	}
254		366
255	static unsigned int etp_npending (void)	367	static unsigned int
		368	etp_npending (void)
256	{	369	{
257	unsigned int retval;	370	unsigned int retval;
258		371
259	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);	372	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
260	retval = npending;	373	retval = npending;
261	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);	374	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
262		375
263	return retval;	376	return retval;
264	}	377	}
265		378
266	static unsigned int etp_nthreads (void)	379	static unsigned int
		380	etp_nthreads (void)
267	{	381	{
268	unsigned int retval;	382	unsigned int retval;
269		383
270	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);	384	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
271	retval = started;	385	retval = started;
…		…
285	} etp_reqq;	399	} etp_reqq;
286		400
287	static etp_reqq req_queue;	401	static etp_reqq req_queue;
288	static etp_reqq res_queue;	402	static etp_reqq res_queue;
289		403
		404	static void ecb_noinline ecb_cold
		405	reqq_init (etp_reqq *q)
		406	{
		407	int pri;
		408
		409	for (pri = 0; pri < ETP_NUM_PRI; ++pri)
		410	q->qs[pri] = q->qe[pri] = 0;
		411
		412	q->size = 0;
		413	}
		414
		415	static int ecb_noinline
290	static int reqq_push (etp_reqq *q, ETP_REQ *req)	416	reqq_push (etp_reqq *q, ETP_REQ *req)
291	{	417	{
292	int pri = req->pri;	418	int pri = req->pri;
293	req->next = 0;	419	req->next = 0;
294		420
295	if (q->qe[pri])	421	if (q->qe[pri])
…		…
301	q->qe[pri] = q->qs[pri] = req;	427	q->qe[pri] = q->qs[pri] = req;
302		428
303	return q->size++;	429	return q->size++;
304	}	430	}
305		431
		432	static ETP_REQ * ecb_noinline
306	static ETP_REQ *reqq_shift (etp_reqq *q)	433	reqq_shift (etp_reqq *q)
307	{	434	{
308	int pri;	435	int pri;
309		436
310	if (!q->size)	437	if (!q->size)
311	return 0;	438	return 0;
…		…
326	}	453	}
327		454
328	abort ();	455	abort ();
329	}	456	}
330		457
331	static void etp_atfork_prepare (void)	458	static void ecb_cold
		459	etp_thread_init (void)
332	{	460	{
333	X_LOCK (wrklock);
334	X_LOCK (reqlock);
335	X_LOCK (reslock);
336	#if !HAVE_PREADWRITE	461	#if !HAVE_PREADWRITE
337	X_LOCK (preadwritelock);
338	#endif
339	}
340
341	static void etp_atfork_parent (void)
342	{
343	#if !HAVE_PREADWRITE
344	X_UNLOCK (preadwritelock);	462	X_MUTEX_CREATE (preadwritelock);
345	#endif	463	#endif
346	X_UNLOCK (reslock);	464	X_MUTEX_CREATE (wrklock);
347	X_UNLOCK (reqlock);	465	X_MUTEX_CREATE (reslock);
348	X_UNLOCK (wrklock);	466	X_MUTEX_CREATE (reqlock);
		467	X_COND_CREATE (reqwait);
349	}	468	}
350		469
		470	static void ecb_cold
351	static void etp_atfork_child (void)	471	etp_atfork_child (void)
352	{	472	{
353	ETP_REQ *prv;	473	reqq_init (&req_queue);
		474	reqq_init (&res_queue);
354		475
355	while ((prv = reqq_shift (&req_queue)))	476	wrk_first.next =
356	ETP_DESTROY (prv);	477	wrk_first.prev = &wrk_first;
357
358	while ((prv = reqq_shift (&res_queue)))
359	ETP_DESTROY (prv);
360
361	while (wrk_first.next != &wrk_first)
362	{
363	etp_worker *wrk = wrk_first.next;
364
365	if (wrk->req)
366	ETP_DESTROY (wrk->req);
367
368	etp_worker_clear (wrk);
369	etp_worker_free (wrk);
370	}
371		478
372	started = 0;	479	started = 0;
373	idle = 0;	480	idle = 0;
374	nreqs = 0;	481	nreqs = 0;
375	nready = 0;	482	nready = 0;
376	npending = 0;	483	npending = 0;
377		484
378	etp_atfork_parent ();	485	etp_thread_init ();
379	}	486	}
380		487
381	static void	488	static void ecb_cold
382	etp_once_init (void)	489	etp_once_init (void)
383	{	490	{
384	X_THREAD_ATFORK (etp_atfork_prepare, etp_atfork_parent, etp_atfork_child);	491	etp_thread_init ();
		492	X_THREAD_ATFORK (0, 0, etp_atfork_child);
385	}	493	}
386		494
387	static int	495	static int ecb_cold
388	etp_init (void (*want_poll)(void), void (*done_poll)(void))	496	etp_init (void (*want_poll)(void), void (*done_poll)(void))
389	{	497	{
390	static pthread_once_t doinit = PTHREAD_ONCE_INIT;	498	static pthread_once_t doinit = PTHREAD_ONCE_INIT;
391		499
392	pthread_once (&doinit, etp_once_init);	500	pthread_once (&doinit, etp_once_init);
…		…
397	return 0;	505	return 0;
398	}	506	}
399		507
400	X_THREAD_PROC (etp_proc);	508	X_THREAD_PROC (etp_proc);
401		509
		510	static void ecb_cold
402	static void etp_start_thread (void)	511	etp_start_thread (void)
403	{	512	{
404	etp_worker *wrk = calloc (1, sizeof (etp_worker));	513	etp_worker *wrk = calloc (1, sizeof (etp_worker));
405		514
406	/*TODO*/	515	/*TODO*/
407	assert (("unable to allocate worker thread data", wrk));	516	assert (("unable to allocate worker thread data", wrk));
…		…
420	free (wrk);	529	free (wrk);
421		530
422	X_UNLOCK (wrklock);	531	X_UNLOCK (wrklock);
423	}	532	}
424		533
		534	static void
425	static void etp_maybe_start_thread (void)	535	etp_maybe_start_thread (void)
426	{	536	{
427	if (expect_true (etp_nthreads () >= wanted))	537	if (ecb_expect_true (etp_nthreads () >= wanted))
428	return;	538	return;
429		539
430	/* todo: maybe use idle here, but might be less exact */	540	/* todo: maybe use idle here, but might be less exact */
431	if (expect_true (0 <= (int)etp_nthreads () + (int)etp_npending () - (int)etp_nreqs ()))	541	if (ecb_expect_true (0 <= (int)etp_nthreads () + (int)etp_npending () - (int)etp_nreqs ()))
432	return;	542	return;
433		543
434	etp_start_thread ();	544	etp_start_thread ();
435	}	545	}
436		546
		547	static void ecb_cold
437	static void etp_end_thread (void)	548	etp_end_thread (void)
438	{	549	{
439	eio_req *req = calloc (1, sizeof (eio_req));	550	eio_req *req = calloc (1, sizeof (eio_req));
440		551
441	req->type = -1;	552	req->type = -1;
442	req->pri = ETP_PRI_MAX - ETP_PRI_MIN;	553	req->pri = ETP_PRI_MAX - ETP_PRI_MIN;
…		…
449	X_LOCK (wrklock);	560	X_LOCK (wrklock);
450	--started;	561	--started;
451	X_UNLOCK (wrklock);	562	X_UNLOCK (wrklock);
452	}	563	}
453		564
454	static int etp_poll (void)	565	static int
		566	etp_poll (void)
455	{	567	{
456	unsigned int maxreqs;	568	unsigned int maxreqs;
457	unsigned int maxtime;	569	unsigned int maxtime;
458	struct timeval tv_start, tv_now;	570	struct timeval tv_start, tv_now;
459		571
…		…
489		601
490	X_LOCK (reqlock);	602	X_LOCK (reqlock);
491	--nreqs;	603	--nreqs;
492	X_UNLOCK (reqlock);	604	X_UNLOCK (reqlock);
493		605
494	if (expect_false (req->type == EIO_GROUP && req->size))	606	if (ecb_expect_false (req->type == EIO_GROUP && req->size))
495	{	607	{
496	req->int1 = 1; /* mark request as delayed */	608	req->int1 = 1; /* mark request as delayed */
497	continue;	609	continue;
498	}	610	}
499	else	611	else
500	{	612	{
501	int res = ETP_FINISH (req);	613	int res = ETP_FINISH (req);
502	if (expect_false (res))	614	if (ecb_expect_false (res))
503	return res;	615	return res;
504	}	616	}
505		617
506	if (expect_false (maxreqs && !--maxreqs))	618	if (ecb_expect_false (maxreqs && !--maxreqs))
507	break;	619	break;
508		620
509	if (maxtime)	621	if (maxtime)
510	{	622	{
511	gettimeofday (&tv_now, 0);	623	gettimeofday (&tv_now, 0);
…		…
517		629
518	errno = EAGAIN;	630	errno = EAGAIN;
519	return -1;	631	return -1;
520	}	632	}
521		633
		634	static void
522	static void etp_cancel (ETP_REQ *req)	635	etp_cancel (ETP_REQ *req)
523	{	636	{
524	X_LOCK (wrklock);	637	req->cancelled = 1;
525	req->flags |= EIO_FLAG_CANCELLED;
526	X_UNLOCK (wrklock);
527		638
528	eio_grp_cancel (req);	639	eio_grp_cancel (req);
529	}	640	}
530		641
		642	static void
531	static void etp_submit (ETP_REQ *req)	643	etp_submit (ETP_REQ *req)
532	{	644	{
533	req->pri -= ETP_PRI_MIN;	645	req->pri -= ETP_PRI_MIN;
534		646
535	if (expect_false (req->pri < ETP_PRI_MIN - ETP_PRI_MIN)) req->pri = ETP_PRI_MIN - ETP_PRI_MIN;	647	if (ecb_expect_false (req->pri < ETP_PRI_MIN - ETP_PRI_MIN)) req->pri = ETP_PRI_MIN - ETP_PRI_MIN;
536	if (expect_false (req->pri > ETP_PRI_MAX - ETP_PRI_MIN)) req->pri = ETP_PRI_MAX - ETP_PRI_MIN;	648	if (ecb_expect_false (req->pri > ETP_PRI_MAX - ETP_PRI_MIN)) req->pri = ETP_PRI_MAX - ETP_PRI_MIN;
537		649
538	if (expect_false (req->type == EIO_GROUP))	650	if (ecb_expect_false (req->type == EIO_GROUP))
539	{	651	{
540	/* I hope this is worth it :/ */	652	/* I hope this is worth it :/ */
541	X_LOCK (reqlock);	653	X_LOCK (reqlock);
542	++nreqs;	654	++nreqs;
543	X_UNLOCK (reqlock);	655	X_UNLOCK (reqlock);
…		…
562		674
563	etp_maybe_start_thread ();	675	etp_maybe_start_thread ();
564	}	676	}
565	}	677	}
566		678
		679	static void ecb_cold
567	static void etp_set_max_poll_time (double nseconds)	680	etp_set_max_poll_time (double nseconds)
568	{	681	{
569	if (WORDACCESS_UNSAFE) X_LOCK (reslock);	682	if (WORDACCESS_UNSAFE) X_LOCK (reslock);
570	max_poll_time = nseconds;	683	max_poll_time = nseconds * EIO_TICKS;
571	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);	684	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);
572	}	685	}
573		686
		687	static void ecb_cold
574	static void etp_set_max_poll_reqs (unsigned int maxreqs)	688	etp_set_max_poll_reqs (unsigned int maxreqs)
575	{	689	{
576	if (WORDACCESS_UNSAFE) X_LOCK (reslock);	690	if (WORDACCESS_UNSAFE) X_LOCK (reslock);
577	max_poll_reqs = maxreqs;	691	max_poll_reqs = maxreqs;
578	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);	692	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);
579	}	693	}
580		694
		695	static void ecb_cold
581	static void etp_set_max_idle (unsigned int nthreads)	696	etp_set_max_idle (unsigned int nthreads)
582	{	697	{
583	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);	698	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
584	max_idle = nthreads <= 0 ? 1 : nthreads;	699	max_idle = nthreads;
585	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);	700	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
586	}	701	}
587		702
		703	static void ecb_cold
		704	etp_set_idle_timeout (unsigned int seconds)
		705	{
		706	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
		707	idle_timeout = seconds;
		708	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
		709	}
		710
		711	static void ecb_cold
588	static void etp_set_min_parallel (unsigned int nthreads)	712	etp_set_min_parallel (unsigned int nthreads)
589	{	713	{
590	if (wanted < nthreads)	714	if (wanted < nthreads)
591	wanted = nthreads;	715	wanted = nthreads;
592	}	716	}
593		717
		718	static void ecb_cold
594	static void etp_set_max_parallel (unsigned int nthreads)	719	etp_set_max_parallel (unsigned int nthreads)
595	{	720	{
596	if (wanted > nthreads)	721	if (wanted > nthreads)
597	wanted = nthreads;	722	wanted = nthreads;
598		723
599	while (started > wanted)	724	while (started > wanted)
600	etp_end_thread ();	725	etp_end_thread ();
601	}	726	}
602		727
603	/*****************************************************************************/	728	/*****************************************************************************/
604		729
		730	static void
605	static void grp_try_feed (eio_req *grp)	731	grp_try_feed (eio_req *grp)
606	{	732	{
607	while (grp->size < grp->int2 && !EIO_CANCELLED (grp))	733	while (grp->size < grp->int2 && !EIO_CANCELLED (grp))
608	{	734	{
609	int old_len = grp->size;	735	grp->flags &= ~EIO_FLAG_GROUPADD;
610		736
611	EIO_FEED (grp);	737	EIO_FEED (grp);
612		738
613	/* stop if no progress has been made */	739	/* stop if no progress has been made */
614	if (old_len == grp->size)	740	if (!(grp->flags & EIO_FLAG_GROUPADD))
615	{	741	{
616	grp->feed = 0;	742	grp->feed = 0;
617	break;	743	break;
618	}	744	}
619	}	745	}
620	}	746	}
621		747
		748	static int
622	static int grp_dec (eio_req *grp)	749	grp_dec (eio_req *grp)
623	{	750	{
624	--grp->size;	751	--grp->size;
625		752
626	/* call feeder, if applicable */	753	/* call feeder, if applicable */
627	grp_try_feed (grp);	754	grp_try_feed (grp);
…		…
631	return eio_finish (grp);	758	return eio_finish (grp);
632	else	759	else
633	return 0;	760	return 0;
634	}	761	}
635		762
		763	static void
636	void eio_destroy (eio_req *req)	764	eio_destroy (eio_req *req)
637	{	765	{
638	if ((req)->flags & EIO_FLAG_PTR1_FREE) free (req->ptr1);	766	if ((req)->flags & EIO_FLAG_PTR1_FREE) free (req->ptr1);
639	if ((req)->flags & EIO_FLAG_PTR2_FREE) free (req->ptr2);	767	if ((req)->flags & EIO_FLAG_PTR2_FREE) free (req->ptr2);
640		768
641	EIO_DESTROY (req);	769	EIO_DESTROY (req);
642	}	770	}
643		771
		772	static int
644	static int eio_finish (eio_req *req)	773	eio_finish (eio_req *req)
645	{	774	{
646	int res = EIO_FINISH (req);	775	int res = EIO_FINISH (req);
647		776
648	if (req->grp)	777	if (req->grp)
649	{	778	{
…		…
657	if (grp->grp_first == req)	786	if (grp->grp_first == req)
658	grp->grp_first = req->grp_next;	787	grp->grp_first = req->grp_next;
659		788
660	res2 = grp_dec (grp);	789	res2 = grp_dec (grp);
661		790
662	if (!res && res2)	791	if (!res)
663	res = res2;	792	res = res2;
664	}	793	}
665		794
666	eio_destroy (req);	795	eio_destroy (req);
667		796
668	return res;	797	return res;
669	}	798	}
670		799
		800	void
671	void eio_grp_cancel (eio_req *grp)	801	eio_grp_cancel (eio_req *grp)
672	{	802	{
673	for (grp = grp->grp_first; grp; grp = grp->grp_next)	803	for (grp = grp->grp_first; grp; grp = grp->grp_next)
674	eio_cancel (grp);	804	eio_cancel (grp);
675	}	805	}
676		806
		807	void
677	void eio_cancel (eio_req *req)	808	eio_cancel (eio_req *req)
678	{	809	{
679	etp_cancel (req);	810	etp_cancel (req);
680	}	811	}
681		812
		813	void
682	void eio_submit (eio_req *req)	814	eio_submit (eio_req *req)
683	{	815	{
684	etp_submit (req);	816	etp_submit (req);
685	}	817	}
686		818
687	unsigned int eio_nreqs (void)	819	unsigned int
		820	eio_nreqs (void)
688	{	821	{
689	return etp_nreqs ();	822	return etp_nreqs ();
690	}	823	}
691		824
692	unsigned int eio_nready (void)	825	unsigned int
		826	eio_nready (void)
693	{	827	{
694	return etp_nready ();	828	return etp_nready ();
695	}	829	}
696		830
697	unsigned int eio_npending (void)	831	unsigned int
		832	eio_npending (void)
698	{	833	{
699	return etp_npending ();	834	return etp_npending ();
700	}	835	}
701		836
702	unsigned int eio_nthreads (void)	837	unsigned int ecb_cold
		838	eio_nthreads (void)
703	{	839	{
704	return etp_nthreads ();	840	return etp_nthreads ();
705	}	841	}
706		842
		843	void ecb_cold
707	void eio_set_max_poll_time (double nseconds)	844	eio_set_max_poll_time (double nseconds)
708	{	845	{
709	etp_set_max_poll_time (nseconds);	846	etp_set_max_poll_time (nseconds);
710	}	847	}
711		848
		849	void ecb_cold
712	void eio_set_max_poll_reqs (unsigned int maxreqs)	850	eio_set_max_poll_reqs (unsigned int maxreqs)
713	{	851	{
714	etp_set_max_poll_reqs (maxreqs);	852	etp_set_max_poll_reqs (maxreqs);
715	}	853	}
716		854
		855	void ecb_cold
717	void eio_set_max_idle (unsigned int nthreads)	856	eio_set_max_idle (unsigned int nthreads)
718	{	857	{
719	etp_set_max_idle (nthreads);	858	etp_set_max_idle (nthreads);
720	}	859	}
721		860
		861	void ecb_cold
		862	eio_set_idle_timeout (unsigned int seconds)
		863	{
		864	etp_set_idle_timeout (seconds);
		865	}
		866
		867	void ecb_cold
722	void eio_set_min_parallel (unsigned int nthreads)	868	eio_set_min_parallel (unsigned int nthreads)
723	{	869	{
724	etp_set_min_parallel (nthreads);	870	etp_set_min_parallel (nthreads);
725	}	871	}
726		872
		873	void ecb_cold
727	void eio_set_max_parallel (unsigned int nthreads)	874	eio_set_max_parallel (unsigned int nthreads)
728	{	875	{
729	etp_set_max_parallel (nthreads);	876	etp_set_max_parallel (nthreads);
730	}	877	}
731		878
732	int eio_poll (void)	879	int eio_poll (void)
…		…
736		883
737	/*****************************************************************************/	884	/*****************************************************************************/
738	/* work around various missing functions */	885	/* work around various missing functions */
739		886
740	#if !HAVE_PREADWRITE	887	#if !HAVE_PREADWRITE
		888	# undef pread
		889	# undef pwrite
741	# define pread eio__pread	890	# define pread eio__pread
742	# define pwrite eio__pwrite	891	# define pwrite eio__pwrite
743		892
744	static ssize_t	893	static eio_ssize_t
745	eio__pread (int fd, void *buf, size_t count, off_t offset)	894	eio__pread (int fd, void *buf, size_t count, off_t offset)
746	{	895	{
747	ssize_t res;	896	eio_ssize_t res;
748	off_t ooffset;	897	off_t ooffset;
749		898
750	X_LOCK (preadwritelock);	899	X_LOCK (preadwritelock);
751	ooffset = lseek (fd, 0, SEEK_CUR);	900	ooffset = lseek (fd, 0, SEEK_CUR);
752	lseek (fd, offset, SEEK_SET);	901	lseek (fd, offset, SEEK_SET);
…		…
755	X_UNLOCK (preadwritelock);	904	X_UNLOCK (preadwritelock);
756		905
757	return res;	906	return res;
758	}	907	}
759		908
760	static ssize_t	909	static eio_ssize_t
761	eio__pwrite (int fd, void *buf, size_t count, off_t offset)	910	eio__pwrite (int fd, void *buf, size_t count, off_t offset)
762	{	911	{
763	ssize_t res;	912	eio_ssize_t res;
764	off_t ooffset;	913	off_t ooffset;
765		914
766	X_LOCK (preadwritelock);	915	X_LOCK (preadwritelock);
767	ooffset = lseek (fd, 0, SEEK_CUR);	916	ooffset = lseek (fd, 0, SEEK_CUR);
768	lseek (fd, offset, SEEK_SET);	917	lseek (fd, offset, SEEK_SET);
769	res = write (fd, buf, count);	918	res = write (fd, buf, count);
770	lseek (fd, offset, SEEK_SET);	919	lseek (fd, ooffset, SEEK_SET);
771	X_UNLOCK (preadwritelock);	920	X_UNLOCK (preadwritelock);
772		921
773	return res;	922	return res;
774	}	923	}
775	#endif	924	#endif
776		925
777	#ifndef HAVE_FUTIMES	926	#ifndef HAVE_UTIMES
778		927
		928	# undef utimes
779	# define utimes(path,times) eio__utimes (path, times)	929	# define utimes(path,times) eio__utimes (path, times)
780	# define futimes(fd,times) eio__futimes (fd, times)
781		930
782	static int	931	static int
783	eio__utimes (const char *filename, const struct timeval times[2])	932	eio__utimes (const char *filename, const struct timeval times[2])
784	{	933	{
785	if (times)	934	if (times)
…		…
793	}	942	}
794	else	943	else
795	return utime (filename, 0);	944	return utime (filename, 0);
796	}	945	}
797		946
		947	#endif
		948
		949	#ifndef HAVE_FUTIMES
		950
		951	# undef futimes
		952	# define futimes(fd,times) eio__futimes (fd, times)
		953
		954	static int
798	static int eio__futimes (int fd, const struct timeval tv[2])	955	eio__futimes (int fd, const struct timeval tv[2])
799	{	956	{
800	errno = ENOSYS;	957	errno = ENOSYS;
801	return -1;	958	return -1;
802	}	959	}
803		960
804	#endif	961	#endif
805		962
806	#if !HAVE_FDATASYNC	963	#if !HAVE_FDATASYNC
		964	# undef fdatasync
807	# define fdatasync fsync	965	# define fdatasync(fd) fsync (fd)
808	#endif	966	#endif
		967
		968	/* sync_file_range always needs emulation */
		969	static int
		970	eio__sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags)
		971	{
		972	#if HAVE_SYNC_FILE_RANGE
		973	int res;
		974
		975	if (EIO_SYNC_FILE_RANGE_WAIT_BEFORE != SYNC_FILE_RANGE_WAIT_BEFORE
		976	|| EIO_SYNC_FILE_RANGE_WRITE != SYNC_FILE_RANGE_WRITE
		977	|| EIO_SYNC_FILE_RANGE_WAIT_AFTER != SYNC_FILE_RANGE_WAIT_AFTER)
		978	{
		979	flags = 0
		980	| (flags & EIO_SYNC_FILE_RANGE_WAIT_BEFORE ? SYNC_FILE_RANGE_WAIT_BEFORE : 0)
		981	| (flags & EIO_SYNC_FILE_RANGE_WRITE ? SYNC_FILE_RANGE_WRITE : 0)
		982	| (flags & EIO_SYNC_FILE_RANGE_WAIT_AFTER ? SYNC_FILE_RANGE_WAIT_AFTER : 0);
		983	}
		984
		985	res = sync_file_range (fd, offset, nbytes, flags);
		986
		987	if (!res || errno != ENOSYS)
		988	return res;
		989	#endif
		990
		991	/* even though we could play tricks with the flags, it's better to always
		992	* call fdatasync, as that matches the expectation of its users best */
		993	return fdatasync (fd);
		994	}
		995
		996	static int
		997	eio__fallocate (int fd, int mode, off_t offset, size_t len)
		998	{
		999	#if HAVE_FALLOCATE
		1000	return fallocate (fd, mode, offset, len);
		1001	#else
		1002	errno = ENOSYS;
		1003	return -1;
		1004	#endif
		1005	}
809		1006
810	#if !HAVE_READAHEAD	1007	#if !HAVE_READAHEAD
		1008	# undef readahead
811	# define readahead(fd,offset,count) eio__readahead (fd, offset, count, self)	1009	# define readahead(fd,offset,count) eio__readahead (fd, offset, count, self)
812		1010
813	static ssize_t	1011	static eio_ssize_t
814	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)
815	{	1013	{
816	size_t todo = count;	1014	size_t todo = count;
817	dBUF;	1015	dBUF;
818		1016
…		…
830	}	1028	}
831		1029
832	#endif	1030	#endif
833		1031
834	/* sendfile always needs emulation */	1032	/* sendfile always needs emulation */
835	static ssize_t	1033	static eio_ssize_t
836	eio__sendfile (int ofd, int ifd, off_t offset, size_t count, etp_worker *self)	1034	eio__sendfile (int ofd, int ifd, off_t offset, size_t count, etp_worker *self)
837	{	1035	{
		1036	eio_ssize_t written = 0;
838	ssize_t res;	1037	eio_ssize_t res;
839		1038
840	if (!count)	1039	if (!count)
841	return 0;	1040	return 0;
842		1041
		1042	for (;;)
		1043	{
		1044	#ifdef __APPLE__
		1045	# undef HAVE_SENDFILE /* broken, as everything on os x */
		1046	#endif
843	#if HAVE_SENDFILE	1047	#if HAVE_SENDFILE
844	# if __linux	1048	# if __linux
		1049	off_t soffset = offset;
845	res = sendfile (ofd, ifd, &offset, count);	1050	res = sendfile (ofd, ifd, &soffset, count);
846		1051
847	# elif __freebsd	1052	# elif __FreeBSD__
848	/*	1053	/*
849	* Of course, the freebsd sendfile is a dire hack with no thoughts	1054	* Of course, the freebsd sendfile is a dire hack with no thoughts
850	* wasted on making it similar to other I/O functions.	1055	* wasted on making it similar to other I/O functions.
851	*/	1056	*/
852	{
853	off_t sbytes;	1057	off_t sbytes;
854	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);	1058	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
855		1059
856	if (res < 0 && sbytes)	1060	#if 0 /* according to the manpage, this is correct, but broken behaviour */
857	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */	1061	/* freebsd' sendfile will return 0 on success */
		1062	/* freebsd 8 documents it as only setting *sbytes on EINTR and EAGAIN, but */
		1063	/* not on e.g. EIO or EPIPE - sounds broken */
		1064	if ((res < 0 && (errno == EAGAIN || errno == EINTR) && sbytes) || res == 0)
858	res = sbytes;	1065	res = sbytes;
859	}	1066	#endif
		1067
		1068	/* according to source inspection, this is correct, and useful behaviour */
		1069	if (sbytes)
		1070	res = sbytes;
		1071
		1072	# elif defined (__APPLE__)
		1073	off_t sbytes = count;
		1074	res = sendfile (ifd, ofd, offset, &sbytes, 0, 0);
		1075
		1076	/* according to the manpage, sbytes is always valid */
		1077	if (sbytes)
		1078	res = sbytes;
860		1079
861	# elif __hpux	1080	# elif __hpux
862	res = sendfile (ofd, ifd, offset, count, 0, 0);	1081	res = sendfile (ofd, ifd, offset, count, 0, 0);
863		1082
864	# elif __solaris	1083	# elif __solaris
865	{
866	struct sendfilevec vec;	1084	struct sendfilevec vec;
867	size_t sbytes;	1085	size_t sbytes;
868		1086
869	vec.sfv_fd = ifd;	1087	vec.sfv_fd = ifd;
870	vec.sfv_flag = 0;	1088	vec.sfv_flag = 0;
871	vec.sfv_off = offset;	1089	vec.sfv_off = offset;
872	vec.sfv_len = count;	1090	vec.sfv_len = count;
873		1091
874	res = sendfilev (ofd, &vec, 1, &sbytes);	1092	res = sendfilev (ofd, &vec, 1, &sbytes);
875		1093
876	if (res < 0 && sbytes)	1094	if (res < 0 && sbytes)
877	res = sbytes;	1095	res = sbytes;
878	}
879		1096
880	# endif	1097	# endif
		1098
		1099	#elif defined (_WIN32) && 0
		1100	/* does not work, just for documentation of what would need to be done */
		1101	/* actually, cannot be done like this, as TransmitFile changes the file offset, */
		1102	/* libeio guarantees that the file offset does not change, and windows */
		1103	/* has no way to get an independent handle to the same file description */
		1104	HANDLE h = TO_SOCKET (ifd);
		1105	SetFilePointer (h, offset, 0, FILE_BEGIN);
		1106	res = TransmitFile (TO_SOCKET (ofd), h, count, 0, 0, 0, 0);
		1107
881	#else	1108	#else
882	res = -1;	1109	res = -1;
883	errno = ENOSYS;	1110	errno = ENOSYS;
884	#endif	1111	#endif
885		1112
		1113	/* we assume sendfile can copy at least 128mb in one go */
		1114	if (res <= 128 * 1024 * 1024)
		1115	{
		1116	if (res > 0)
		1117	written += res;
		1118
		1119	if (written)
		1120	return written;
		1121
		1122	break;
		1123	}
		1124	else
		1125	{
		1126	/* if we requested more, then probably the kernel was lazy */
		1127	written += res;
		1128	offset += res;
		1129	count -= res;
		1130
		1131	if (!count)
		1132	return written;
		1133	}
		1134	}
		1135
886	if (res < 0	1136	if (res < 0
887	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK	1137	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
		1138	/* BSDs */
		1139	#ifdef ENOTSUP /* sigh, if the steenking pile called openbsd would only try to at least compile posix code... */
		1140	|| errno == ENOTSUP
		1141	#endif
		1142	#ifdef EOPNOTSUPP /* windows */
		1143	|| errno == EOPNOTSUPP /* BSDs */
		1144	#endif
888	#if __solaris	1145	#if __solaris
889	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE	1146	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
890	#endif	1147	#endif
891	)	1148	)
892	)	1149	)
…		…
896		1153
897	res = 0;	1154	res = 0;
898		1155
899	while (count)	1156	while (count)
900	{	1157	{
901	ssize_t cnt;	1158	eio_ssize_t cnt;
902		1159
903	cnt = pread (ifd, eio_buf, count > EIO_BUFSIZE ? EIO_BUFSIZE : count, offset);	1160	cnt = pread (ifd, eio_buf, count > EIO_BUFSIZE ? EIO_BUFSIZE : count, offset);
904		1161
905	if (cnt <= 0)	1162	if (cnt <= 0)
906	{	1163	{
…		…
923	}	1180	}
924		1181
925	return res;	1182	return res;
926	}	1183	}
927		1184
		1185	#ifdef PAGESIZE
		1186	# define eio_pagesize() PAGESIZE
		1187	#else
		1188	static intptr_t
		1189	eio_pagesize (void)
		1190	{
		1191	static intptr_t page;
		1192
		1193	if (!page)
		1194	page = sysconf (_SC_PAGESIZE);
		1195
		1196	return page;
		1197	}
		1198	#endif
		1199
		1200	static void
		1201	eio_page_align (void **addr, size_t *length)
		1202	{
		1203	intptr_t mask = eio_pagesize () - 1;
		1204
		1205	/* round down addr */
		1206	intptr_t adj = mask & (intptr_t)*addr;
		1207
		1208	*addr = (void *)((intptr_t)*addr - adj);
		1209	*length += adj;
		1210
		1211	/* round up length */
		1212	*length = (*length + mask) & ~mask;
		1213	}
		1214
		1215	#if !_POSIX_MEMLOCK
		1216	# define eio__mlockall(a) EIO_ENOSYS ()
		1217	#else
		1218
		1219	static int
		1220	eio__mlockall (int flags)
		1221	{
		1222	#if __GLIBC__ == 2 && __GLIBC_MINOR__ <= 7
		1223	extern int mallopt (int, int);
		1224	mallopt (-6, 238); /* http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=473812 */
		1225	#endif
		1226
		1227	if (EIO_MCL_CURRENT != MCL_CURRENT
		1228	|| EIO_MCL_FUTURE != MCL_FUTURE)
		1229	{
		1230	flags = 0
		1231	| (flags & EIO_MCL_CURRENT ? MCL_CURRENT : 0)
		1232	| (flags & EIO_MCL_FUTURE ? MCL_FUTURE : 0);
		1233	}
		1234
		1235	return mlockall (flags);
		1236	}
		1237	#endif
		1238
		1239	#if !_POSIX_MEMLOCK_RANGE
		1240	# define eio__mlock(a,b) EIO_ENOSYS ()
		1241	#else
		1242
		1243	static int
		1244	eio__mlock (void *addr, size_t length)
		1245	{
		1246	eio_page_align (&addr, &length);
		1247
		1248	return mlock (addr, length);
		1249	}
		1250
		1251	#endif
		1252
		1253	#if !(_POSIX_MAPPED_FILES && _POSIX_SYNCHRONIZED_IO)
		1254	# define eio__msync(a,b,c) EIO_ENOSYS ()
		1255	#else
		1256
		1257	static int
		1258	eio__msync (void *mem, size_t len, int flags)
		1259	{
		1260	eio_page_align (&mem, &len);
		1261
		1262	if (EIO_MS_ASYNC != MS_SYNC
		1263	|| EIO_MS_INVALIDATE != MS_INVALIDATE
		1264	|| EIO_MS_SYNC != MS_SYNC)
		1265	{
		1266	flags = 0
		1267	| (flags & EIO_MS_ASYNC ? MS_ASYNC : 0)
		1268	| (flags & EIO_MS_INVALIDATE ? MS_INVALIDATE : 0)
		1269	| (flags & EIO_MS_SYNC ? MS_SYNC : 0);
		1270	}
		1271
		1272	return msync (mem, len, flags);
		1273	}
		1274
		1275	#endif
		1276
		1277	static int
		1278	eio__mtouch (eio_req *req)
		1279	{
		1280	void *mem = req->ptr2;
		1281	size_t len = req->size;
		1282	int flags = req->int1;
		1283
		1284	eio_page_align (&mem, &len);
		1285
		1286	{
		1287	intptr_t addr = (intptr_t)mem;
		1288	intptr_t end = addr + len;
		1289	intptr_t page = eio_pagesize ();
		1290
		1291	if (addr < end)
		1292	if (flags & EIO_MT_MODIFY) /* modify */
		1293	do { *((volatile sig_atomic_t *)addr) |= 0; } while ((addr += page) < len && !EIO_CANCELLED (req));
		1294	else
		1295	do { *((volatile sig_atomic_t *)addr) ; } while ((addr += page) < len && !EIO_CANCELLED (req));
		1296	}
		1297
		1298	return 0;
		1299	}
		1300
		1301	/*****************************************************************************/
		1302	/* requests implemented outside eio_execute, because they are so large */
		1303
		1304	static void
		1305	eio__realpath (eio_req *req, etp_worker *self)
		1306	{
		1307	char *rel = req->ptr1;
		1308	char *res;
		1309	char *tmp1, *tmp2;
		1310	#if SYMLOOP_MAX > 32
		1311	int symlinks = SYMLOOP_MAX;
		1312	#else
		1313	int symlinks = 32;
		1314	#endif
		1315
		1316	req->result = -1;
		1317
		1318	errno = EINVAL;
		1319	if (!rel)
		1320	return;
		1321
		1322	errno = ENOENT;
		1323	if (!*rel)
		1324	return;
		1325
		1326	if (!req->ptr2)
		1327	{
		1328	X_LOCK (wrklock);
		1329	req->flags |= EIO_FLAG_PTR2_FREE;
		1330	X_UNLOCK (wrklock);
		1331	req->ptr2 = malloc (PATH_MAX * 3);
		1332
		1333	errno = ENOMEM;
		1334	if (!req->ptr2)
		1335	return;
		1336	}
		1337
		1338	res = req->ptr2;
		1339	tmp1 = res + PATH_MAX;
		1340	tmp2 = tmp1 + PATH_MAX;
		1341
		1342	#if 0 /* disabled, the musl way to do things is just too racy */
		1343	#if __linux && defined(O_NONBLOCK) && defined(O_NOATIME)
		1344	/* on linux we may be able to ask the kernel */
		1345	{
		1346	int fd = open (rel, O_RDONLY | O_NONBLOCK | O_NOCTTY | O_NOATIME);
		1347
		1348	if (fd >= 0)
		1349	{
		1350	sprintf (tmp1, "/proc/self/fd/%d", fd);
		1351	req->result = readlink (tmp1, res, PATH_MAX);
		1352	close (fd);
		1353
		1354	/* here we should probably stat the open file and the disk file, to make sure they still match */
		1355
		1356	if (req->result > 0)
		1357	goto done;
		1358	}
		1359	else if (errno == ELOOP || errno == ENAMETOOLONG || errno == ENOENT || errno == ENOTDIR || errno == EIO)
		1360	return;
		1361	}
		1362	#endif
		1363	#endif
		1364
		1365	if (*rel != '/')
		1366	{
		1367	if (!getcwd (res, PATH_MAX))
		1368	return;
		1369
		1370	if (res [1]) /* only use if not / */
		1371	res += strlen (res);
		1372	}
		1373
		1374	while (*rel)
		1375	{
		1376	eio_ssize_t len, linklen;
		1377	char *beg = rel;
		1378
		1379	while (*rel && *rel != '/')
		1380	++rel;
		1381
		1382	len = rel - beg;
		1383
		1384	if (!len) /* skip slashes */
		1385	{
		1386	++rel;
		1387	continue;
		1388	}
		1389
		1390	if (beg [0] == '.')
		1391	{
		1392	if (len == 1)
		1393	continue; /* . - nop */
		1394
		1395	if (beg [1] == '.' && len == 2)
		1396	{
		1397	/* .. - back up one component, if possible */
		1398
		1399	while (res != req->ptr2)
		1400	if (*--res == '/')
		1401	break;
		1402
		1403	continue;
		1404	}
		1405	}
		1406
		1407	errno = ENAMETOOLONG;
		1408	if (res + 1 + len + 1 >= tmp1)
		1409	return;
		1410
		1411	/* copy one component */
		1412	*res = '/';
		1413	memcpy (res + 1, beg, len);
		1414
		1415	/* zero-terminate, for readlink */
		1416	res [len + 1] = 0;
		1417
		1418	/* now check if it's a symlink */
		1419	linklen = readlink (req->ptr2, tmp1, PATH_MAX);
		1420
		1421	if (linklen < 0)
		1422	{
		1423	if (errno != EINVAL)
		1424	return;
		1425
		1426	/* it's a normal directory. hopefully */
		1427	res += len + 1;
		1428	}
		1429	else
		1430	{
		1431	/* yay, it was a symlink - build new path in tmp2 */
		1432	int rellen = strlen (rel);
		1433
		1434	errno = ENAMETOOLONG;
		1435	if (linklen + 1 + rellen >= PATH_MAX)
		1436	return;
		1437
		1438	errno = ELOOP;
		1439	if (!--symlinks)
		1440	return;
		1441
		1442	if (*tmp1 == '/')
		1443	res = req->ptr2; /* symlink resolves to an absolute path */
		1444
		1445	/* we need to be careful, as rel might point into tmp2 already */
		1446	memmove (tmp2 + linklen + 1, rel, rellen + 1);
		1447	tmp2 [linklen] = '/';
		1448	memcpy (tmp2, tmp1, linklen);
		1449
		1450	rel = tmp2;
		1451	}
		1452	}
		1453
		1454	/* special case for the lone root path */
		1455	if (res == req->ptr2)
		1456	*res++ = '/';
		1457
		1458	req->result = res - (char *)req->ptr2;
		1459
		1460	done:
		1461	req->ptr2 = realloc (req->ptr2, req->result); /* trade time for space savings */
		1462	}
		1463
		1464	static signed char
		1465	eio_dent_cmp (const eio_dirent *a, const eio_dirent *b)
		1466	{
		1467	return a->score - b->score ? a->score - b->score /* works because our signed char is always 0..100 */
		1468	: a->inode < b->inode ? -1
		1469	: a->inode > b->inode ? 1
		1470	: 0;
		1471	}
		1472
		1473	#define EIO_DENT_CMP(i,op,j) eio_dent_cmp (&i, &j) op 0
		1474
		1475	#define EIO_SORT_CUTOFF 30 /* quite high, but performs well on many filesystems */
		1476	#define EIO_SORT_FAST 60 /* when to only use insertion sort */
		1477
		1478	static void
		1479	eio_dent_radix_sort (eio_dirent *dents, int size, signed char score_bits, eio_ino_t inode_bits)
		1480	{
		1481	unsigned char bits [9 + sizeof (eio_ino_t) * 8];
		1482	unsigned char *bit = bits;
		1483
		1484	assert (CHAR_BIT == 8);
		1485	assert (sizeof (eio_dirent) * 8 < 256);
		1486	assert (offsetof (eio_dirent, inode)); /* we use bit #0 as sentinel */
		1487	assert (offsetof (eio_dirent, score)); /* we use bit #0 as sentinel */
		1488
		1489	if (size <= EIO_SORT_FAST)
		1490	return;
		1491
		1492	/* first prepare an array of bits to test in our radix sort */
		1493	/* try to take endianness into account, as well as differences in eio_ino_t sizes */
		1494	/* inode_bits must contain all inodes ORed together */
		1495	/* which is used to skip bits that are 0 everywhere, which is very common */
		1496	{
		1497	eio_ino_t endianness;
		1498	int i, j;
		1499
		1500	/* we store the byte offset of byte n into byte n of "endianness" */
		1501	for (i = 0; i < sizeof (eio_ino_t); ++i)
		1502	((unsigned char *)&endianness)[i] = i;
		1503
		1504	*bit++ = 0;
		1505
		1506	for (i = 0; i < sizeof (eio_ino_t); ++i)
		1507	{
		1508	/* shifting off the byte offsets out of "endianness" */
		1509	int offs = (offsetof (eio_dirent, inode) + (endianness & 0xff)) * 8;
		1510	endianness >>= 8;
		1511
		1512	for (j = 0; j < 8; ++j)
		1513	if (inode_bits & (((eio_ino_t)1) << (i * 8 + j)))
		1514	*bit++ = offs + j;
		1515	}
		1516
		1517	for (j = 0; j < 8; ++j)
		1518	if (score_bits & (1 << j))
		1519	*bit++ = offsetof (eio_dirent, score) * 8 + j;
		1520	}
		1521
		1522	/* now actually do the sorting (a variant of MSD radix sort) */
		1523	{
		1524	eio_dirent *base_stk [9 + sizeof (eio_ino_t) * 8], *base;
		1525	eio_dirent *end_stk [9 + sizeof (eio_ino_t) * 8], *end;
		1526	unsigned char *bit_stk [9 + sizeof (eio_ino_t) * 8];
		1527	int stk_idx = 0;
		1528
		1529	base_stk [stk_idx] = dents;
		1530	end_stk [stk_idx] = dents + size;
		1531	bit_stk [stk_idx] = bit - 1;
		1532
		1533	do
		1534	{
		1535	base = base_stk [stk_idx];
		1536	end = end_stk [stk_idx];
		1537	bit = bit_stk [stk_idx];
		1538
		1539	for (;;)
		1540	{
		1541	unsigned char O = *bit >> 3;
		1542	unsigned char M = 1 << (*bit & 7);
		1543
		1544	eio_dirent *a = base;
		1545	eio_dirent *b = end;
		1546
		1547	if (b - a < EIO_SORT_CUTOFF)
		1548	break;
		1549
		1550	/* now bit-partition the array on the bit */
		1551	/* this ugly asymmetric loop seems to perform much better than typical */
		1552	/* partition algos found in the literature */
		1553	do
		1554	if (!(((unsigned char *)a)[O] & M))
		1555	++a;
		1556	else if (!(((unsigned char *)--b)[O] & M))
		1557	{
		1558	eio_dirent tmp = *a; *a = *b; *b = tmp;
		1559	++a;
		1560	}
		1561	while (b > a);
		1562
		1563	/* next bit, or stop, if no bits left in this path */
		1564	if (!*--bit)
		1565	break;
		1566
		1567	base_stk [stk_idx] = a;
		1568	end_stk [stk_idx] = end;
		1569	bit_stk [stk_idx] = bit;
		1570	++stk_idx;
		1571
		1572	end = a;
		1573	}
		1574	}
		1575	while (stk_idx--);
		1576	}
		1577	}
		1578
		1579	static void
		1580	eio_dent_insertion_sort (eio_dirent *dents, int size)
		1581	{
		1582	/* first move the smallest element to the front, to act as a sentinel */
		1583	{
		1584	int i;
		1585	eio_dirent *min = dents;
		1586
		1587	/* the radix pre-pass ensures that the minimum element is in the first EIO_SORT_CUTOFF + 1 elements */
		1588	for (i = size > EIO_SORT_FAST ? EIO_SORT_CUTOFF + 1 : size; --i; )
		1589	if (EIO_DENT_CMP (dents [i], <, *min))
		1590	min = &dents [i];
		1591
		1592	/* swap elements 0 and j (minimum) */
		1593	{
		1594	eio_dirent tmp = *dents; *dents = *min; *min = tmp;
		1595	}
		1596	}
		1597
		1598	/* then do standard insertion sort, assuming that all elements are >= dents [0] */
		1599	{
		1600	eio_dirent *i, *j;
		1601
		1602	for (i = dents + 1; i < dents + size; ++i)
		1603	{
		1604	eio_dirent value = *i;
		1605
		1606	for (j = i - 1; EIO_DENT_CMP (*j, >, value); --j)
		1607	j [1] = j [0];
		1608
		1609	j [1] = value;
		1610	}
		1611	}
		1612	}
		1613
		1614	static void
		1615	eio_dent_sort (eio_dirent *dents, int size, signed char score_bits, eio_ino_t inode_bits)
		1616	{
		1617	if (size <= 1)
		1618	return; /* our insertion sort relies on size > 0 */
		1619
		1620	/* first we use a radix sort, but only for dirs >= EIO_SORT_FAST */
		1621	/* and stop sorting when the partitions are <= EIO_SORT_CUTOFF */
		1622	eio_dent_radix_sort (dents, size, score_bits, inode_bits);
		1623
		1624	/* use an insertion sort at the end, or for small arrays, */
		1625	/* as insertion sort is more efficient for small partitions */
		1626	eio_dent_insertion_sort (dents, size);
		1627	}
		1628
928	/* read a full directory */	1629	/* read a full directory */
929	static void	1630	static void
930	eio__scandir (eio_req *req, etp_worker *self)	1631	eio__scandir (eio_req *req, etp_worker *self)
931	{	1632	{
		1633	char *name, *names;
		1634	int namesalloc = 4096 - sizeof (void *) * 4;
		1635	int namesoffs = 0;
		1636	int flags = req->int1;
		1637	eio_dirent *dents = 0;
		1638	int dentalloc = 128;
		1639	int dentoffs = 0;
		1640	eio_ino_t inode_bits = 0;
		1641	#ifdef _WIN32
		1642	HANDLE dirp;
		1643	WIN32_FIND_DATA entp;
		1644	#else
932	DIR *dirp;	1645	DIR *dirp;
933	EIO_STRUCT_DIRENT *entp;	1646	EIO_STRUCT_DIRENT *entp;
934	char *name, *names;	1647	#endif
935	int memlen = 4096;
936	int memofs = 0;
937	int res = 0;
938		1648
939	X_LOCK (wrklock);	1649	req->result = -1;
940	/* the corresponding closedir is in ETP_WORKER_CLEAR */	1650
		1651	if (!(flags & EIO_READDIR_DENTS))
		1652	flags &= ~(EIO_READDIR_DIRS_FIRST | EIO_READDIR_STAT_ORDER);
		1653
		1654	#ifdef _WIN32
		1655	{
		1656	int len = strlen ((const char *)req->ptr1);
		1657	char *path = malloc (MAX_PATH);
		1658	const char *fmt;
		1659
		1660	if (!len)
		1661	fmt = "./*";
		1662	else if (((const char *)req->ptr1)[len - 1] == '/' || ((const char *)req->ptr1)[len - 1] == '\\')
		1663	fmt = "%s*";
		1664	else
		1665	fmt = "%s/*";
		1666
		1667	_snprintf (path, MAX_PATH, fmt, (const char *)req->ptr1);
		1668	dirp = FindFirstFile (path, &entp);
		1669	free (path);
		1670
		1671	if (dirp == INVALID_HANDLE_VALUE)
		1672	{
		1673	dirp = 0;
		1674
		1675	switch (GetLastError ())
		1676	{
		1677	case ERROR_FILE_NOT_FOUND:
		1678	req->result = 0;
		1679	break;
		1680
		1681	case ERROR_INVALID_NAME:
		1682	case ERROR_PATH_NOT_FOUND:
		1683	case ERROR_NO_MORE_FILES:
		1684	errno = ENOENT;
		1685	break;
		1686
		1687	case ERROR_NOT_ENOUGH_MEMORY:
		1688	errno = ENOMEM;
		1689	break;
		1690
		1691	default:
		1692	errno = EINVAL;
		1693	break;
		1694	}
		1695	}
		1696	}
		1697	#else
941	self->dirp = dirp = opendir (req->ptr1);	1698	dirp = opendir (req->ptr1);
		1699	#endif
		1700
942	req->flags |= EIO_FLAG_PTR2_FREE;	1701	if (req->flags & EIO_FLAG_PTR1_FREE)
		1702	free (req->ptr1);
		1703
		1704	req->flags |= EIO_FLAG_PTR1_FREE | EIO_FLAG_PTR2_FREE;
		1705	req->ptr1 = dents = flags ? malloc (dentalloc * sizeof (eio_dirent)) : 0;
943	req->ptr2 = names = malloc (memlen);	1706	req->ptr2 = names = malloc (namesalloc);
944	X_UNLOCK (wrklock);
945		1707
946	if (dirp && names)	1708	if (dirp && names && (!flags || dents))
947	for (;;)	1709	for (;;)
948	{	1710	{
		1711	int done;
		1712
		1713	#ifdef _WIN32
		1714	done = !dirp;
		1715	#else
949	errno = 0;	1716	errno = 0;
950	entp = readdir (dirp);	1717	entp = readdir (dirp);
		1718	done = !entp;
		1719	#endif
951		1720
952	if (!entp)	1721	if (done)
		1722	{
		1723	#ifndef _WIN32
		1724	int old_errno = errno;
		1725	closedir (dirp);
		1726	errno = old_errno;
		1727
		1728	if (errno)
		1729	break;
		1730	#endif
		1731
		1732	/* sort etc. */
		1733	req->int1 = flags;
		1734	req->result = dentoffs;
		1735
		1736	if (flags & EIO_READDIR_STAT_ORDER)
		1737	eio_dent_sort (dents, dentoffs, flags & EIO_READDIR_DIRS_FIRST ? 7 : 0, inode_bits);
		1738	else if (flags & EIO_READDIR_DIRS_FIRST)
		1739	if (flags & EIO_READDIR_FOUND_UNKNOWN)
		1740	eio_dent_sort (dents, dentoffs, 7, inode_bits); /* sort by score and inode */
		1741	else
		1742	{
		1743	/* in this case, all is known, and we just put dirs first and sort them */
		1744	eio_dirent *oth = dents + dentoffs;
		1745	eio_dirent *dir = dents;
		1746
		1747	/* now partition dirs to the front, and non-dirs to the back */
		1748	/* by walking from both sides and swapping if necessary */
		1749	while (oth > dir)
		1750	{
		1751	if (dir->type == EIO_DT_DIR)
		1752	++dir;
		1753	else if ((--oth)->type == EIO_DT_DIR)
		1754	{
		1755	eio_dirent tmp = *dir; *dir = *oth; *oth = tmp;
		1756
		1757	++dir;
		1758	}
		1759	}
		1760
		1761	/* now sort the dirs only (dirs all have the same score) */
		1762	eio_dent_sort (dents, dir - dents, 0, inode_bits);
		1763	}
		1764
953	break;	1765	break;
		1766	}
954		1767
955	name = entp->d_name;	1768	/* now add the entry to our list(s) */
		1769	name = D_NAME (entp);
956		1770
		1771	/* skip . and .. entries */
957	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))	1772	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
958	{	1773	{
959	int len = strlen (name) + 1;	1774	int len = D_NAMLEN (entp) + 1;
960		1775
961	res++;	1776	while (ecb_expect_false (namesoffs + len > namesalloc))
962
963	while (memofs + len > memlen)
964	{	1777	{
965	memlen *= 2;	1778	namesalloc *= 2;
966	X_LOCK (wrklock);
967	req->ptr2 = names = realloc (names, memlen);	1779	req->ptr2 = names = realloc (names, namesalloc);
968	X_UNLOCK (wrklock);
969		1780
970	if (!names)	1781	if (!names)
971	break;	1782	break;
972	}	1783	}
973		1784
974	memcpy (names + memofs, name, len);	1785	memcpy (names + namesoffs, name, len);
		1786
		1787	if (dents)
		1788	{
		1789	struct eio_dirent *ent;
		1790
		1791	if (ecb_expect_false (dentoffs == dentalloc))
		1792	{
		1793	dentalloc *= 2;
		1794	req->ptr1 = dents = realloc (dents, dentalloc * sizeof (eio_dirent));
		1795
		1796	if (!dents)
		1797	break;
		1798	}
		1799
		1800	ent = dents + dentoffs;
		1801
		1802	ent->nameofs = namesoffs; /* rather dirtily we store the offset in the pointer */
		1803	ent->namelen = len - 1;
		1804	ent->inode = D_INO (entp);
		1805
		1806	inode_bits |= ent->inode;
		1807
		1808	switch (D_TYPE (entp))
		1809	{
		1810	default:
		1811	ent->type = EIO_DT_UNKNOWN;
		1812	flags |= EIO_READDIR_FOUND_UNKNOWN;
		1813	break;
		1814
		1815	#ifdef DT_FIFO
		1816	case DT_FIFO: ent->type = EIO_DT_FIFO; break;
		1817	#endif
		1818	#ifdef DT_CHR
		1819	case DT_CHR: ent->type = EIO_DT_CHR; break;
		1820	#endif
		1821	#ifdef DT_MPC
		1822	case DT_MPC: ent->type = EIO_DT_MPC; break;
		1823	#endif
		1824	#ifdef DT_DIR
		1825	case DT_DIR: ent->type = EIO_DT_DIR; break;
		1826	#endif
		1827	#ifdef DT_NAM
		1828	case DT_NAM: ent->type = EIO_DT_NAM; break;
		1829	#endif
		1830	#ifdef DT_BLK
		1831	case DT_BLK: ent->type = EIO_DT_BLK; break;
		1832	#endif
		1833	#ifdef DT_MPB
		1834	case DT_MPB: ent->type = EIO_DT_MPB; break;
		1835	#endif
		1836	#ifdef DT_REG
		1837	case DT_REG: ent->type = EIO_DT_REG; break;
		1838	#endif
		1839	#ifdef DT_NWK
		1840	case DT_NWK: ent->type = EIO_DT_NWK; break;
		1841	#endif
		1842	#ifdef DT_CMP
		1843	case DT_CMP: ent->type = EIO_DT_CMP; break;
		1844	#endif
		1845	#ifdef DT_LNK
		1846	case DT_LNK: ent->type = EIO_DT_LNK; break;
		1847	#endif
		1848	#ifdef DT_SOCK
		1849	case DT_SOCK: ent->type = EIO_DT_SOCK; break;
		1850	#endif
		1851	#ifdef DT_DOOR
		1852	case DT_DOOR: ent->type = EIO_DT_DOOR; break;
		1853	#endif
		1854	#ifdef DT_WHT
		1855	case DT_WHT: ent->type = EIO_DT_WHT; break;
		1856	#endif
		1857	}
		1858
		1859	ent->score = 7;
		1860
		1861	if (flags & EIO_READDIR_DIRS_FIRST)
		1862	{
		1863	if (ent->type == EIO_DT_UNKNOWN)
		1864	{
		1865	if (*name == '.') /* leading dots are likely directories, and, in any case, rare */
		1866	ent->score = 1;
		1867	else if (!strchr (name, '.')) /* absense of dots indicate likely dirs */
		1868	ent->score = len <= 2 ? 4 - len : len <= 4 ? 4 : len <= 7 ? 5 : 6; /* shorter == more likely dir, but avoid too many classes */
		1869	}
		1870	else if (ent->type == EIO_DT_DIR)
		1871	ent->score = 0;
		1872	}
		1873	}
		1874
975	memofs += len;	1875	namesoffs += len;
		1876	++dentoffs;
976	}	1877	}
		1878
		1879	if (EIO_CANCELLED (req))
		1880	{
		1881	errno = ECANCELED;
		1882	break;
		1883	}
		1884
		1885	#ifdef _WIN32
		1886	if (!FindNextFile (dirp, &entp))
		1887	{
		1888	FindClose (dirp);
		1889	dirp = 0;
		1890	}
		1891	#endif
977	}	1892	}
978
979	if (errno)
980	res = -1;
981
982	req->result = res;
983	}
984
985	#if !(_POSIX_MAPPED_FILES && _POSIX_SYNCHRONIZED_IO)
986	# define msync(a,b,c) ENOSYS
987	#endif
988
989	int
990	eio__mtouch (void *mem, size_t len, int flags)
991	{
992	intptr_t addr = (intptr_t)mem;
993	intptr_t end = addr + len;
994	#ifdef PAGESIZE
995	const intptr_t page = PAGESIZE;
996	#else
997	static intptr_t page;
998
999	if (!page)
1000	page = sysconf (_SC_PAGESIZE);
1001	#endif
1002
1003	addr &= ~(page - 1); /* assume page size is always a power of two */
1004
1005	if (addr < end)
1006	if (flags) /* modify */
1007	do { *((volatile sig_atomic_t *)addr) |= 0; } while ((addr += page) < len);
1008	else
1009	do { *((volatile sig_atomic_t *)addr) ; } while ((addr += page) < len);
1010
1011	return 0;
1012	}	1893	}
1013		1894
1014	/*****************************************************************************/	1895	/*****************************************************************************/
1015		1896
1016	#define ALLOC(len) \	1897	#define ALLOC(len) \
…		…
1032	{	1913	{
1033	ETP_REQ *req;	1914	ETP_REQ *req;
1034	struct timespec ts;	1915	struct timespec ts;
1035	etp_worker *self = (etp_worker *)thr_arg;	1916	etp_worker *self = (etp_worker *)thr_arg;
1036		1917
1037	/* try to distribute timeouts somewhat randomly */	1918	/* try to distribute timeouts somewhat evenly */
1038	ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL);	1919	ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL);
1039		1920
1040	for (;;)	1921	for (;;)
1041	{	1922	{
		1923	ts.tv_sec = 0;
		1924
1042	X_LOCK (reqlock);	1925	X_LOCK (reqlock);
1043		1926
1044	for (;;)	1927	for (;;)
1045	{	1928	{
1046	self->req = req = reqq_shift (&req_queue);	1929	self->req = req = reqq_shift (&req_queue);
1047		1930
1048	if (req)	1931	if (req)
1049	break;	1932	break;
1050		1933
		1934	if (ts.tv_sec == 1) /* no request, but timeout detected, let's quit */
		1935	{
		1936	X_UNLOCK (reqlock);
		1937	X_LOCK (wrklock);
		1938	--started;
		1939	X_UNLOCK (wrklock);
		1940	goto quit;
		1941	}
		1942
1051	++idle;	1943	++idle;
1052		1944
1053	ts.tv_sec = time (0) + IDLE_TIMEOUT;	1945	if (idle <= max_idle)
1054	if (X_COND_TIMEDWAIT (reqwait, reqlock, ts) == ETIMEDOUT)	1946	/* we are allowed to idle, so do so without any timeout */
		1947	X_COND_WAIT (reqwait, reqlock);
		1948	else
1055	{	1949	{
1056	if (idle > max_idle)	1950	/* initialise timeout once */
1057	{	1951	if (!ts.tv_sec)
1058	--idle;	1952	ts.tv_sec = time (0) + idle_timeout;
1059	X_UNLOCK (reqlock);
1060	X_LOCK (wrklock);
1061	--started;
1062	X_UNLOCK (wrklock);
1063	goto quit;
1064	}
1065		1953
1066	/* we are allowed to idle, so do so without any timeout */
1067	X_COND_WAIT (reqwait, reqlock);	1954	if (X_COND_TIMEDWAIT (reqwait, reqlock, ts) == ETIMEDOUT)
		1955	ts.tv_sec = 1; /* assuming this is not a value computed above.,.. */
1068	}	1956	}
1069		1957
1070	--idle;	1958	--idle;
1071	}	1959	}
1072		1960
…		…
1075	X_UNLOCK (reqlock);	1963	X_UNLOCK (reqlock);
1076		1964
1077	if (req->type < 0)	1965	if (req->type < 0)
1078	goto quit;	1966	goto quit;
1079		1967
1080	if (!EIO_CANCELLED (req))
1081	ETP_EXECUTE (self, req);	1968	ETP_EXECUTE (self, req);
1082		1969
1083	X_LOCK (reslock);	1970	X_LOCK (reslock);
1084		1971
1085	++npending;	1972	++npending;
1086		1973
…		…
1101	return 0;	1988	return 0;
1102	}	1989	}
1103		1990
1104	/*****************************************************************************/	1991	/*****************************************************************************/
1105		1992
		1993	int ecb_cold
1106	int eio_init (void (*want_poll)(void), void (*done_poll)(void))	1994	eio_init (void (*want_poll)(void), void (*done_poll)(void))
1107	{	1995	{
1108	return etp_init (want_poll, done_poll);	1996	return etp_init (want_poll, done_poll);
1109	}	1997	}
1110		1998
		1999	ecb_inline void
1111	static void eio_api_destroy (eio_req *req)	2000	eio_api_destroy (eio_req *req)
1112	{	2001	{
1113	free (req);	2002	free (req);
1114	}	2003	}
1115		2004
1116	#define REQ(rtype) \	2005	#define REQ(rtype) \
…		…
1135	{ \	2024	{ \
1136	eio_api_destroy (req); \	2025	eio_api_destroy (req); \
1137	return 0; \	2026	return 0; \
1138	}	2027	}
1139		2028
		2029	static void
1140	static void eio_execute (etp_worker *self, eio_req *req)	2030	eio_execute (etp_worker *self, eio_req *req)
1141	{	2031	{
1142	errno = 0;	2032	if (ecb_expect_false (EIO_CANCELLED (req)))
		2033	{
		2034	req->result = -1;
		2035	req->errorno = ECANCELED;
		2036	return;
		2037	}
1143		2038
1144	switch (req->type)	2039	switch (req->type)
1145	{	2040	{
1146	case EIO_READ: ALLOC (req->size);	2041	case EIO_READ: ALLOC (req->size);
1147	req->result = req->offs >= 0	2042	req->result = req->offs >= 0
…		…
1159	case EIO_LSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));	2054	case EIO_LSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));
1160	req->result = lstat (req->ptr1, (EIO_STRUCT_STAT *)req->ptr2); break;	2055	req->result = lstat (req->ptr1, (EIO_STRUCT_STAT *)req->ptr2); break;
1161	case EIO_FSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));	2056	case EIO_FSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));
1162	req->result = fstat (req->int1, (EIO_STRUCT_STAT *)req->ptr2); break;	2057	req->result = fstat (req->int1, (EIO_STRUCT_STAT *)req->ptr2); break;
1163		2058
		2059	case EIO_STATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS));
		2060	req->result = statvfs (req->ptr1, (EIO_STRUCT_STATVFS *)req->ptr2); break;
		2061	case EIO_FSTATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS));
		2062	req->result = fstatvfs (req->int1, (EIO_STRUCT_STATVFS *)req->ptr2); break;
		2063
1164	case EIO_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break;	2064	case EIO_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break;
1165	case EIO_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;	2065	case EIO_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
1166	case EIO_CHMOD: req->result = chmod (req->ptr1, (mode_t)req->int2); break;	2066	case EIO_CHMOD: req->result = chmod (req->ptr1, (mode_t)req->int2); break;
1167	case EIO_FCHMOD: req->result = fchmod (req->int1, (mode_t)req->int2); break;	2067	case EIO_FCHMOD: req->result = fchmod (req->int1, (mode_t)req->int2); break;
1168	case EIO_TRUNCATE: req->result = truncate (req->ptr1, req->offs); break;	2068	case EIO_TRUNCATE: req->result = truncate (req->ptr1, req->offs); break;
…		…
1175	case EIO_RMDIR: req->result = rmdir (req->ptr1); break;	2075	case EIO_RMDIR: req->result = rmdir (req->ptr1); break;
1176	case EIO_MKDIR: req->result = mkdir (req->ptr1, (mode_t)req->int2); break;	2076	case EIO_MKDIR: req->result = mkdir (req->ptr1, (mode_t)req->int2); break;
1177	case EIO_RENAME: req->result = rename (req->ptr1, req->ptr2); break;	2077	case EIO_RENAME: req->result = rename (req->ptr1, req->ptr2); break;
1178	case EIO_LINK: req->result = link (req->ptr1, req->ptr2); break;	2078	case EIO_LINK: req->result = link (req->ptr1, req->ptr2); break;
1179	case EIO_SYMLINK: req->result = symlink (req->ptr1, req->ptr2); break;	2079	case EIO_SYMLINK: req->result = symlink (req->ptr1, req->ptr2); break;
1180	case EIO_MKNOD: req->result = mknod (req->ptr1, (mode_t)req->int2, (dev_t)req->int3); break;	2080	case EIO_MKNOD: req->result = mknod (req->ptr1, (mode_t)req->int2, (dev_t)req->offs); break;
1181		2081
		2082	case EIO_REALPATH: eio__realpath (req, self); break;
		2083
1182	case EIO_READLINK: ALLOC (NAME_MAX);	2084	case EIO_READLINK: ALLOC (PATH_MAX);
1183	req->result = readlink (req->ptr1, req->ptr2, NAME_MAX); break;	2085	req->result = readlink (req->ptr1, req->ptr2, PATH_MAX); break;
1184		2086
1185	case EIO_SYNC: req->result = 0; sync (); break;	2087	case EIO_SYNC: req->result = 0; sync (); break;
1186	case EIO_FSYNC: req->result = fsync (req->int1); break;	2088	case EIO_FSYNC: req->result = fsync (req->int1); break;
1187	case EIO_FDATASYNC: req->result = fdatasync (req->int1); break;	2089	case EIO_FDATASYNC: req->result = fdatasync (req->int1); break;
1188	case EIO_MSYNC: req->result = msync (req->ptr2, req->size, req->int1); break;	2090	case EIO_MSYNC: req->result = eio__msync (req->ptr2, req->size, req->int1); break;
		2091	case EIO_MTOUCH: req->result = eio__mtouch (req); break;
1189	case EIO_MTOUCH: req->result = eio__mtouch (req->ptr2, req->size, req->int1); break;	2092	case EIO_MLOCK: req->result = eio__mlock (req->ptr2, req->size); break;
		2093	case EIO_MLOCKALL: req->result = eio__mlockall (req->int1); break;
		2094	case EIO_SYNC_FILE_RANGE: req->result = eio__sync_file_range (req->int1, req->offs, req->size, req->int2); break;
		2095	case EIO_FALLOCATE: req->result = eio__fallocate (req->int1, req->int2, req->offs, req->size); break;
1190		2096
1191	case EIO_READDIR: eio__scandir (req, self); break;	2097	case EIO_READDIR: eio__scandir (req, self); break;
1192		2098
1193	case EIO_BUSY:	2099	case EIO_BUSY:
1194	#ifdef _WIN32	2100	#ifdef _WIN32
1195	Sleep (req->nv1 * 1000.);	2101	Sleep (req->nv1 * 1e3);
1196	#else	2102	#else
1197	{	2103	{
1198	struct timeval tv;	2104	struct timeval tv;
1199		2105
1200	tv.tv_sec = req->nv1;	2106	tv.tv_sec = req->nv1;
1201	tv.tv_usec = (req->nv1 - tv.tv_sec) * 1000000.;	2107	tv.tv_usec = (req->nv1 - tv.tv_sec) * 1e6;
1202		2108
1203	req->result = select (0, 0, 0, 0, &tv);	2109	req->result = select (0, 0, 0, 0, &tv);
1204	}	2110	}
1205	#endif	2111	#endif
1206	break;	2112	break;
…		…
1221	times = tv;	2127	times = tv;
1222	}	2128	}
1223	else	2129	else
1224	times = 0;	2130	times = 0;
1225		2131
1226
1227	req->result = req->type == EIO_FUTIME	2132	req->result = req->type == EIO_FUTIME
1228	? futimes (req->int1, times)	2133	? futimes (req->int1, times)
1229	: utimes (req->ptr1, times);	2134	: utimes (req->ptr1, times);
1230	}	2135	}
1231	break;	2136	break;
…		…
1236	case EIO_NOP:	2141	case EIO_NOP:
1237	req->result = 0;	2142	req->result = 0;
1238	break;	2143	break;
1239		2144
1240	case EIO_CUSTOM:	2145	case EIO_CUSTOM:
1241	((void (*)(eio_req *))req->feed) (req);	2146	req->feed (req);
1242	break;	2147	break;
1243		2148
1244	default:	2149	default:
		2150	errno = ENOSYS;
1245	req->result = -1;	2151	req->result = -1;
1246	break;	2152	break;
1247	}	2153	}
1248		2154
1249	req->errorno = errno;	2155	req->errorno = errno;
…		…
1279	eio_req *eio_mtouch (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data)	2185	eio_req *eio_mtouch (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data)
1280	{	2186	{
1281	REQ (EIO_MTOUCH); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND;	2187	REQ (EIO_MTOUCH); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND;
1282	}	2188	}
1283		2189
		2190	eio_req *eio_mlock (void *addr, size_t length, int pri, eio_cb cb, void *data)
		2191	{
		2192	REQ (EIO_MLOCK); req->ptr2 = addr; req->size = length; SEND;
		2193	}
		2194
		2195	eio_req *eio_mlockall (int flags, int pri, eio_cb cb, void *data)
		2196	{
		2197	REQ (EIO_MLOCKALL); req->int1 = flags; SEND;
		2198	}
		2199
		2200	eio_req *eio_sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags, int pri, eio_cb cb, void *data)
		2201	{
		2202	REQ (EIO_SYNC_FILE_RANGE); req->int1 = fd; req->offs = offset; req->size = nbytes; req->int2 = flags; SEND;
		2203	}
		2204
		2205	eio_req *eio_fallocate (int fd, int mode, off_t offset, size_t len, int pri, eio_cb cb, void *data)
		2206	{
		2207	REQ (EIO_FALLOCATE); req->int1 = fd; req->int2 = mode; req->offs = offset; req->size = len; SEND;
		2208	}
		2209
1284	eio_req *eio_fdatasync (int fd, int pri, eio_cb cb, void *data)	2210	eio_req *eio_fdatasync (int fd, int pri, eio_cb cb, void *data)
1285	{	2211	{
1286	REQ (EIO_FDATASYNC); req->int1 = fd; SEND;	2212	REQ (EIO_FDATASYNC); req->int1 = fd; SEND;
1287	}	2213	}
1288		2214
…		…
1309	eio_req *eio_fstat (int fd, int pri, eio_cb cb, void *data)	2235	eio_req *eio_fstat (int fd, int pri, eio_cb cb, void *data)
1310	{	2236	{
1311	REQ (EIO_FSTAT); req->int1 = fd; SEND;	2237	REQ (EIO_FSTAT); req->int1 = fd; SEND;
1312	}	2238	}
1313		2239
		2240	eio_req *eio_fstatvfs (int fd, int pri, eio_cb cb, void *data)
		2241	{
		2242	REQ (EIO_FSTATVFS); req->int1 = fd; SEND;
		2243	}
		2244
1314	eio_req *eio_futime (int fd, double atime, double mtime, int pri, eio_cb cb, void *data)	2245	eio_req *eio_futime (int fd, double atime, double mtime, int pri, eio_cb cb, void *data)
1315	{	2246	{
1316	REQ (EIO_FUTIME); req->int1 = fd; req->nv1 = atime; req->nv2 = mtime; SEND;	2247	REQ (EIO_FUTIME); req->int1 = fd; req->nv1 = atime; req->nv2 = mtime; SEND;
1317	}	2248	}
1318		2249
…		…
1324	eio_req *eio_fchmod (int fd, mode_t mode, int pri, eio_cb cb, void *data)	2255	eio_req *eio_fchmod (int fd, mode_t mode, int pri, eio_cb cb, void *data)
1325	{	2256	{
1326	REQ (EIO_FCHMOD); req->int1 = fd; req->int2 = (long)mode; SEND;	2257	REQ (EIO_FCHMOD); req->int1 = fd; req->int2 = (long)mode; SEND;
1327	}	2258	}
1328		2259
1329	eio_req *eio_fchown (int fd, uid_t uid, gid_t gid, int pri, eio_cb cb, void *data)	2260	eio_req *eio_fchown (int fd, eio_uid_t uid, eio_gid_t gid, int pri, eio_cb cb, void *data)
1330	{	2261	{
1331	REQ (EIO_FCHOWN); req->int1 = fd; req->int2 = (long)uid; req->int3 = (long)gid; SEND;	2262	REQ (EIO_FCHOWN); req->int1 = fd; req->int2 = (long)uid; req->int3 = (long)gid; SEND;
1332	}	2263	}
1333		2264
1334	eio_req *eio_dup2 (int fd, int fd2, int pri, eio_cb cb, void *data)	2265	eio_req *eio_dup2 (int fd, int fd2, int pri, eio_cb cb, void *data)
…		…
1354	eio_req *eio_truncate (const char *path, off_t offset, int pri, eio_cb cb, void *data)	2285	eio_req *eio_truncate (const char *path, off_t offset, int pri, eio_cb cb, void *data)
1355	{	2286	{
1356	REQ (EIO_TRUNCATE); PATH; req->offs = offset; SEND;	2287	REQ (EIO_TRUNCATE); PATH; req->offs = offset; SEND;
1357	}	2288	}
1358		2289
1359	eio_req *eio_chown (const char *path, uid_t uid, gid_t gid, int pri, eio_cb cb, void *data)	2290	eio_req *eio_chown (const char *path, eio_uid_t uid, eio_gid_t gid, int pri, eio_cb cb, void *data)
1360	{	2291	{
1361	REQ (EIO_CHOWN); PATH; req->int2 = (long)uid; req->int3 = (long)gid; SEND;	2292	REQ (EIO_CHOWN); PATH; req->int2 = (long)uid; req->int3 = (long)gid; SEND;
1362	}	2293	}
1363		2294
1364	eio_req *eio_chmod (const char *path, mode_t mode, int pri, eio_cb cb, void *data)	2295	eio_req *eio_chmod (const char *path, mode_t mode, int pri, eio_cb cb, void *data)
…		…
1380	eio_req *eio_readlink (const char *path, int pri, eio_cb cb, void *data)	2311	eio_req *eio_readlink (const char *path, int pri, eio_cb cb, void *data)
1381	{	2312	{
1382	return eio__1path (EIO_READLINK, path, pri, cb, data);	2313	return eio__1path (EIO_READLINK, path, pri, cb, data);
1383	}	2314	}
1384		2315
		2316	eio_req *eio_realpath (const char *path, int pri, eio_cb cb, void *data)
		2317	{
		2318	return eio__1path (EIO_REALPATH, path, pri, cb, data);
		2319	}
		2320
1385	eio_req *eio_stat (const char *path, int pri, eio_cb cb, void *data)	2321	eio_req *eio_stat (const char *path, int pri, eio_cb cb, void *data)
1386	{	2322	{
1387	return eio__1path (EIO_STAT, path, pri, cb, data);	2323	return eio__1path (EIO_STAT, path, pri, cb, data);
1388	}	2324	}
1389		2325
1390	eio_req *eio_lstat (const char *path, int pri, eio_cb cb, void *data)	2326	eio_req *eio_lstat (const char *path, int pri, eio_cb cb, void *data)
1391	{	2327	{
1392	return eio__1path (EIO_LSTAT, path, pri, cb, data);	2328	return eio__1path (EIO_LSTAT, path, pri, cb, data);
1393	}	2329	}
1394		2330
		2331	eio_req *eio_statvfs (const char *path, int pri, eio_cb cb, void *data)
		2332	{
		2333	return eio__1path (EIO_STATVFS, path, pri, cb, data);
		2334	}
		2335
1395	eio_req *eio_unlink (const char *path, int pri, eio_cb cb, void *data)	2336	eio_req *eio_unlink (const char *path, int pri, eio_cb cb, void *data)
1396	{	2337	{
1397	return eio__1path (EIO_UNLINK, path, pri, cb, data);	2338	return eio__1path (EIO_UNLINK, path, pri, cb, data);
1398	}	2339	}
1399		2340
1400	eio_req *eio_rmdir (const char *path, int pri, eio_cb cb, void *data)	2341	eio_req *eio_rmdir (const char *path, int pri, eio_cb cb, void *data)
1401	{	2342	{
1402	return eio__1path (EIO_RMDIR, path, pri, cb, data);	2343	return eio__1path (EIO_RMDIR, path, pri, cb, data);
1403	}	2344	}
1404		2345
1405	eio_req *eio_readdir (const char *path, int pri, eio_cb cb, void *data)	2346	eio_req *eio_readdir (const char *path, int flags, int pri, eio_cb cb, void *data)
1406	{	2347	{
1407	return eio__1path (EIO_READDIR, path, pri, cb, data);	2348	REQ (EIO_READDIR); PATH; req->int1 = flags; SEND;
1408	}	2349	}
1409		2350
1410	eio_req *eio_mknod (const char *path, mode_t mode, dev_t dev, int pri, eio_cb cb, void *data)	2351	eio_req *eio_mknod (const char *path, mode_t mode, dev_t dev, int pri, eio_cb cb, void *data)
1411	{	2352	{
1412	REQ (EIO_MKNOD); PATH; req->int2 = (long)mode; req->int3 = (long)dev; SEND;	2353	REQ (EIO_MKNOD); PATH; req->int2 = (long)mode; req->offs = (off_t)dev; SEND;
1413	}	2354	}
1414		2355
1415	static eio_req *	2356	static eio_req *
1416	eio__2path (int type, const char *path, const char *new_path, int pri, eio_cb cb, void *data)	2357	eio__2path (int type, const char *path, const char *new_path, int pri, eio_cb cb, void *data)
1417	{	2358	{
…		…
1441	eio_req *eio_rename (const char *path, const char *new_path, int pri, eio_cb cb, void *data)	2382	eio_req *eio_rename (const char *path, const char *new_path, int pri, eio_cb cb, void *data)
1442	{	2383	{
1443	return eio__2path (EIO_RENAME, path, new_path, pri, cb, data);	2384	return eio__2path (EIO_RENAME, path, new_path, pri, cb, data);
1444	}	2385	}
1445		2386
1446	eio_req *eio_custom (eio_cb execute, int pri, eio_cb cb, void *data)	2387	eio_req *eio_custom (void (*execute)(eio_req *), int pri, eio_cb cb, void *data)
1447	{	2388	{
1448	REQ (EIO_CUSTOM); req->feed = (void (*)(eio_req *))execute; SEND;	2389	REQ (EIO_CUSTOM); req->feed = execute; SEND;
1449	}	2390	}
1450		2391
1451	#endif	2392	#endif
1452		2393
1453	eio_req *eio_grp (eio_cb cb, void *data)	2394	eio_req *eio_grp (eio_cb cb, void *data)
…		…
1462	#undef SEND	2403	#undef SEND
1463		2404
1464	/*****************************************************************************/	2405	/*****************************************************************************/
1465	/* grp functions */	2406	/* grp functions */
1466		2407
		2408	void
1467	void eio_grp_feed (eio_req *grp, void (*feed)(eio_req *req), int limit)	2409	eio_grp_feed (eio_req *grp, void (*feed)(eio_req *req), int limit)
1468	{	2410	{
1469	grp->int2 = limit;	2411	grp->int2 = limit;
1470	grp->feed = feed;	2412	grp->feed = feed;
1471		2413
1472	grp_try_feed (grp);	2414	grp_try_feed (grp);
1473	}	2415	}
1474		2416
		2417	void
1475	void eio_grp_limit (eio_req *grp, int limit)	2418	eio_grp_limit (eio_req *grp, int limit)
1476	{	2419	{
1477	grp->int2 = limit;	2420	grp->int2 = limit;
1478		2421
1479	grp_try_feed (grp);	2422	grp_try_feed (grp);
1480	}	2423	}
1481		2424
		2425	void
1482	void eio_grp_add (eio_req *grp, eio_req *req)	2426	eio_grp_add (eio_req *grp, eio_req *req)
1483	{	2427	{
1484	assert (("cannot add requests to IO::AIO::GRP after the group finished", grp->int1 != 2));	2428	assert (("cannot add requests to IO::AIO::GRP after the group finished", grp->int1 != 2));
		2429
		2430	grp->flags |= EIO_FLAG_GROUPADD;
1485		2431
1486	++grp->size;	2432	++grp->size;
1487	req->grp = grp;	2433	req->grp = grp;
1488		2434
1489	req->grp_prev = 0;	2435	req->grp_prev = 0;
…		…
1496	}	2442	}
1497		2443
1498	/*****************************************************************************/	2444	/*****************************************************************************/
1499	/* misc garbage */	2445	/* misc garbage */
1500		2446
		2447	eio_ssize_t
1501	ssize_t eio_sendfile_sync (int ofd, int ifd, off_t offset, size_t count)	2448	eio_sendfile_sync (int ofd, int ifd, off_t offset, size_t count)
1502	{	2449	{
1503	etp_worker wrk;	2450	etp_worker wrk;
		2451	eio_ssize_t ret;
1504		2452
1505	wrk.dbuf = 0;	2453	wrk.dbuf = 0;
1506		2454
1507	eio__sendfile (ofd, ifd, offset, count, &wrk);	2455	ret = eio__sendfile (ofd, ifd, offset, count, &wrk);
1508		2456
1509	if (wrk.dbuf)	2457	if (wrk.dbuf)
1510	free (wrk.dbuf);	2458	free (wrk.dbuf);
1511	}
1512		2459
		2460	return ret;
		2461	}
		2462

Diff Legend

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