[ViewVC] Diff of: cvs/cvsroot/libeio/eio.c

Comparing cvsroot/libeio/eio.c (file contents):
Revision 1.22 by root, Fri Jul 11 10:54:50 2008 UTC vs.
Revision 1.97 by root, Sun Jul 24 03:32:54 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	#if !defined(ENOTSOCK) && defined(WSAENOTSOCK)
		77	# define ENOTSOCK WSAENOTSOCK
		78	#endif
		79
		80	static void eio_destroy (eio_req *req);
		81
54	#ifndef EIO_FINISH	82	#ifndef EIO_FINISH
55	# 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
56	#endif	84	#endif
57		85
58	#ifndef EIO_DESTROY	86	#ifndef EIO_DESTROY
…		…
61		89
62	#ifndef EIO_FEED	90	#ifndef EIO_FEED
63	# 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)
64	#endif	92	#endif
65		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
66	#ifdef _WIN32	105	#ifdef _WIN32
67		106
68	/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)
69		162
70	#else	163	#else
71		164
72	# include "config.h"
73	# include <sys/time.h>	165	#include <sys/time.h>
74	# include <sys/select.h>	166	#include <sys/select.h>
		167	#include <sys/statvfs.h>
75	# 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
76	# include <utime.h>	203	# include <utime.h>
77	# include <signal.h>
78	# include <dirent.h>
79
80	# ifndef EIO_STRUCT_DIRENT
81	# define EIO_STRUCT_DIRENT struct dirent
82	# endif
83
84	#endif	204	#endif
85		205
86	#if HAVE_SENDFILE	206	#if HAVE_SENDFILE
87	# if __linux	207	# if __linux
88	# include <sys/sendfile.h>	208	# include <sys/sendfile.h>
89	# elif __freebsd	209	# elif __FreeBSD__ \|\| defined __APPLE__
90	# include <sys/socket.h>	210	# include <sys/socket.h>
91	# include <sys/uio.h>	211	# include <sys/uio.h>
92	# elif __hpux	212	# elif __hpux
93	# include <sys/socket.h>	213	# include <sys/socket.h>
94	# elif __solaris /* not yet */	214	# elif __solaris
95	# include <sys/sendfile.h>	215	# include <sys/sendfile.h>
96	# else	216	# else
97	# error sendfile support requested but not available	217	# error sendfile support requested but not available
98	# endif	218	# endif
99	#endif	219	#endif
100		220
101	/* number of seconds after which an idle threads exit */	221	#if HAVE_SYS_SYSCALL_H
102	#define IDLE_TIMEOUT 10	222	# include <sys/syscall.h>
		223	#endif
		224
		225	#ifndef D_TYPE
		226	# define D_TYPE(de) 0
		227	#endif
		228	#ifndef D_INO
		229	# define D_INO(de) 0
		230	#endif
		231	#ifndef D_NAMLEN
		232	# define D_NAMLEN(entp) strlen (D_NAME (entp))
		233	#endif
103		234
104	/* used for struct dirent, AIX doesn't provide it */	235	/* used for struct dirent, AIX doesn't provide it */
105	#ifndef NAME_MAX	236	#ifndef NAME_MAX
106	# define NAME_MAX 4096	237	# define NAME_MAX 4096
107	#endif	238	#endif
108		239
		240	/* used for readlink etc. */
		241	#ifndef PATH_MAX
		242	# define PATH_MAX 4096
		243	#endif
		244
109	/* buffer size for various temporary buffers */	245	/* buffer size for various temporary buffers */
110	#define EIO_BUFSIZE 65536	246	#define EIO_BUFSIZE 65536
111		247
112	#define dBUF \	248	#define dBUF \
113	char *eio_buf; \
114	ETP_WORKER_LOCK (self); \
115	self->dbuf = eio_buf = malloc (EIO_BUFSIZE); \	249	char *eio_buf = malloc (EIO_BUFSIZE); \
116	ETP_WORKER_UNLOCK (self); \
117	errno = ENOMEM; \	250	errno = ENOMEM; \
118	if (!eio_buf) \	251	if (!eio_buf) \
119	return -1;	252	return -1
		253
		254	#define FUBd \
		255	free (eio_buf)
120		256
121	#define EIO_TICKS ((1000000 + 1023) >> 10)	257	#define EIO_TICKS ((1000000 + 1023) >> 10)
122
123	/*****************************************************************************/
124		258
125	#define ETP_PRI_MIN EIO_PRI_MIN	259	#define ETP_PRI_MIN EIO_PRI_MIN
126	#define ETP_PRI_MAX EIO_PRI_MAX	260	#define ETP_PRI_MAX EIO_PRI_MAX
127		261
128	struct etp_worker;	262	struct etp_worker;
…		…
132	static int eio_finish (eio_req *req);	266	static int eio_finish (eio_req *req);
133	#define ETP_FINISH(req) eio_finish (req)	267	#define ETP_FINISH(req) eio_finish (req)
134	static void eio_execute (struct etp_worker self, eio_req req);	268	static void eio_execute (struct etp_worker self, eio_req req);
135	#define ETP_EXECUTE(wrk,req) eio_execute (wrk,req)	269	#define ETP_EXECUTE(wrk,req) eio_execute (wrk,req)
136		270
137	#define ETP_WORKER_CLEAR(req) \
138	if (wrk->dbuf) \
139	{ \
140	free (wrk->dbuf); \
141	wrk->dbuf = 0; \
142	} \
143	\
144	if (wrk->dirp) \
145	{ \
146	closedir (wrk->dirp); \
147	wrk->dirp = 0; \
148	}
149	#define ETP_WORKER_COMMON \
150	void *dbuf; \
151	DIR *dirp;
152
153	/*****************************************************************************/	271	/*****************************************************************************/
154		272
155	#define ETP_NUM_PRI (ETP_PRI_MAX - ETP_PRI_MIN + 1)	273	#define ETP_NUM_PRI (ETP_PRI_MAX - ETP_PRI_MIN + 1)
156		274
157	/* calculcate time difference in ~1/EIO_TICKS of a second */	275	/* calculate time difference in ~1/EIO_TICKS of a second */
		276	ecb_inline int
158	static int tvdiff (struct timeval tv1, struct timeval tv2)	277	tvdiff (struct timeval tv1, struct timeval tv2)
159	{	278	{
160	return (tv2->tv_sec - tv1->tv_sec ) * EIO_TICKS	279	return (tv2->tv_sec - tv1->tv_sec ) * EIO_TICKS
161	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);	280	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
162	}	281	}
163		282
…		…
170	static unsigned int max_poll_reqs; /* reslock */	289	static unsigned int max_poll_reqs; /* reslock */
171		290
172	static volatile unsigned int nreqs; /* reqlock */	291	static volatile unsigned int nreqs; /* reqlock */
173	static volatile unsigned int nready; /* reqlock */	292	static volatile unsigned int nready; /* reqlock */
174	static volatile unsigned int npending; /* reqlock */	293	static volatile unsigned int npending; /* reqlock */
175	static volatile unsigned int max_idle = 4;	294	static volatile unsigned int max_idle = 4; /* maximum number of threads that can idle indefinitely */
		295	static volatile unsigned int idle_timeout = 10; /* number of seconds after which an idle threads exit */
176		296
177	static mutex_t wrklock = X_MUTEX_INIT;	297	static xmutex_t wrklock;
178	static mutex_t reslock = X_MUTEX_INIT;	298	static xmutex_t reslock;
179	static mutex_t reqlock = X_MUTEX_INIT;	299	static xmutex_t reqlock;
180	static cond_t reqwait = X_COND_INIT;	300	static xcond_t reqwait;
181		301
182	#if !HAVE_PREADWRITE	302	#if !HAVE_PREADWRITE
183	/*	303	/*
184	* make our pread/pwrite emulation safe against themselves, but not against	304	* make our pread/pwrite emulation safe against themselves, but not against
185	* normal read/write by using a mutex. slows down execution a lot,	305	* normal read/write by using a mutex. slows down execution a lot,
186	* but that's your problem, not mine.	306	* but that's your problem, not mine.
187	*/	307	*/
188	static mutex_t preadwritelock = X_MUTEX_INIT;	308	static xmutex_t preadwritelock;
189	#endif	309	#endif
190		310
191	typedef struct etp_worker	311	typedef struct etp_worker
192	{	312	{
193	/* locked by wrklock */	313	/* locked by wrklock */
194	struct etp_worker prev, next;	314	struct etp_worker prev, next;
195		315
196	thread_t tid;	316	xthread_t tid;
197		317
198	/* locked by reslock, reqlock or wrklock */	318	/* locked by reslock, reqlock or wrklock */
199	ETP_REQ req; / currently processed request */	319	ETP_REQ req; / currently processed request */
200		320
		321	#ifdef ETP_WORKER_COMMON
201	ETP_WORKER_COMMON	322	ETP_WORKER_COMMON
		323	#endif
202	} etp_worker;	324	} etp_worker;
203		325
204	static etp_worker wrk_first = { &wrk_first, &wrk_first, 0 }; /* NOT etp */	326	static etp_worker wrk_first; /* NOT etp */
205		327
206	#define ETP_WORKER_LOCK(wrk) X_LOCK (wrklock)	328	#define ETP_WORKER_LOCK(wrk) X_LOCK (wrklock)
207	#define ETP_WORKER_UNLOCK(wrk) X_UNLOCK (wrklock)	329	#define ETP_WORKER_UNLOCK(wrk) X_UNLOCK (wrklock)
208		330
209	/* worker threads management */	331	/* worker threads management */
210		332
		333	static void ecb_cold
211	static void etp_worker_clear (etp_worker *wrk)	334	etp_worker_clear (etp_worker *wrk)
212	{	335	{
213	ETP_WORKER_CLEAR (wrk);
214	}	336	}
215		337
		338	static void ecb_cold
216	static void etp_worker_free (etp_worker *wrk)	339	etp_worker_free (etp_worker *wrk)
217	{	340	{
218	wrk->next->prev = wrk->prev;	341	wrk->next->prev = wrk->prev;
219	wrk->prev->next = wrk->next;	342	wrk->prev->next = wrk->next;
220		343
221	free (wrk);	344	free (wrk);
222	}	345	}
223		346
224	static unsigned int etp_nreqs (void)	347	static unsigned int
		348	etp_nreqs (void)
225	{	349	{
226	int retval;	350	int retval;
227	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);	351	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
228	retval = nreqs;	352	retval = nreqs;
229	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);	353	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
230	return retval;	354	return retval;
231	}	355	}
232		356
233	static unsigned int etp_nready (void)	357	static unsigned int
		358	etp_nready (void)
234	{	359	{
235	unsigned int retval;	360	unsigned int retval;
236		361
237	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);	362	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
238	retval = nready;	363	retval = nready;
239	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);	364	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
240		365
241	return retval;	366	return retval;
242	}	367	}
243		368
244	static unsigned int etp_npending (void)	369	static unsigned int
		370	etp_npending (void)
245	{	371	{
246	unsigned int retval;	372	unsigned int retval;
247		373
248	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);	374	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
249	retval = npending;	375	retval = npending;
250	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);	376	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
251		377
252	return retval;	378	return retval;
253	}	379	}
254		380
255	static unsigned int etp_nthreads (void)	381	static unsigned int
		382	etp_nthreads (void)
256	{	383	{
257	unsigned int retval;	384	unsigned int retval;
258		385
259	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);	386	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
260	retval = started;	387	retval = started;
…		…
274	} etp_reqq;	401	} etp_reqq;
275		402
276	static etp_reqq req_queue;	403	static etp_reqq req_queue;
277	static etp_reqq res_queue;	404	static etp_reqq res_queue;
278		405
		406	static void ecb_noinline ecb_cold
		407	reqq_init (etp_reqq *q)
		408	{
		409	int pri;
		410
		411	for (pri = 0; pri < ETP_NUM_PRI; ++pri)
		412	q->qs[pri] = q->qe[pri] = 0;
		413
		414	q->size = 0;
		415	}
		416
		417	static int ecb_noinline
279	static int reqq_push (etp_reqq q, ETP_REQ req)	418	reqq_push (etp_reqq q, ETP_REQ req)
280	{	419	{
281	int pri = req->pri;	420	int pri = req->pri;
282	req->next = 0;	421	req->next = 0;
283		422
284	if (q->qe[pri])	423	if (q->qe[pri])
…		…
290	q->qe[pri] = q->qs[pri] = req;	429	q->qe[pri] = q->qs[pri] = req;
291		430
292	return q->size++;	431	return q->size++;
293	}	432	}
294		433
		434	static ETP_REQ * ecb_noinline
295	static ETP_REQ reqq_shift (etp_reqq q)	435	reqq_shift (etp_reqq *q)
296	{	436	{
297	int pri;	437	int pri;
298		438
299	if (!q->size)	439	if (!q->size)
300	return 0;	440	return 0;
…		…
315	}	455	}
316		456
317	abort ();	457	abort ();
318	}	458	}
319		459
320	static void etp_atfork_prepare (void)	460	static int ecb_cold
		461	etp_init (void (want_poll)(void), void (done_poll)(void))
321	{	462	{
322	X_LOCK (wrklock);	463	X_MUTEX_CREATE (wrklock);
323	X_LOCK (reqlock);	464	X_MUTEX_CREATE (reslock);
324	X_LOCK (reslock);	465	X_MUTEX_CREATE (reqlock);
325	#if !HAVE_PREADWRITE	466	X_COND_CREATE (reqwait);
326	X_LOCK (preadwritelock);
327	#endif
328	}
329		467
330	static void etp_atfork_parent (void)	468	reqq_init (&req_queue);
331	{	469	reqq_init (&res_queue);
332	#if !HAVE_PREADWRITE
333	X_UNLOCK (preadwritelock);
334	#endif
335	X_UNLOCK (reslock);
336	X_UNLOCK (reqlock);
337	X_UNLOCK (wrklock);
338	}
339		470
340	static void etp_atfork_child (void)	471	wrk_first.next =
341	{	472	wrk_first.prev = &wrk_first;
342	ETP_REQ *prv;
343
344	while ((prv = reqq_shift (&req_queue)))
345	ETP_DESTROY (prv);
346
347	while ((prv = reqq_shift (&res_queue)))
348	ETP_DESTROY (prv);
349
350	while (wrk_first.next != &wrk_first)
351	{
352	etp_worker *wrk = wrk_first.next;
353
354	if (wrk->req)
355	ETP_DESTROY (wrk->req);
356
357	etp_worker_clear (wrk);
358	etp_worker_free (wrk);
359	}
360		473
361	started = 0;	474	started = 0;
362	idle = 0;	475	idle = 0;
363	nreqs = 0;	476	nreqs = 0;
364	nready = 0;	477	nready = 0;
365	npending = 0;	478	npending = 0;
366		479
367	etp_atfork_parent ();
368	}
369
370	static void
371	etp_once_init (void)
372	{
373	X_THREAD_ATFORK (etp_atfork_prepare, etp_atfork_parent, etp_atfork_child);
374	}
375
376	static int
377	etp_init (void (want_poll)(void), void (done_poll)(void))
378	{
379	static pthread_once_t doinit = PTHREAD_ONCE_INIT;
380
381	pthread_once (&doinit, etp_once_init);
382
383	want_poll_cb = want_poll;	480	want_poll_cb = want_poll;
384	done_poll_cb = done_poll;	481	done_poll_cb = done_poll;
385		482
386	return 0;	483	return 0;
387	}	484	}
388		485
389	X_THREAD_PROC (etp_proc);	486	X_THREAD_PROC (etp_proc);
390		487
		488	static void ecb_cold
391	static void etp_start_thread (void)	489	etp_start_thread (void)
392	{	490	{
393	etp_worker *wrk = calloc (1, sizeof (etp_worker));	491	etp_worker *wrk = calloc (1, sizeof (etp_worker));
394		492
395	/TODO/	493	/TODO/
396	assert (("unable to allocate worker thread data", wrk));	494	assert (("unable to allocate worker thread data", wrk));
…		…
409	free (wrk);	507	free (wrk);
410		508
411	X_UNLOCK (wrklock);	509	X_UNLOCK (wrklock);
412	}	510	}
413		511
		512	static void
414	static void etp_maybe_start_thread (void)	513	etp_maybe_start_thread (void)
415	{	514	{
416	if (etp_nthreads () >= wanted)	515	if (ecb_expect_true (etp_nthreads () >= wanted))
417	return;	516	return;
418		517
419	/* todo: maybe use idle here, but might be less exact */	518	/* todo: maybe use idle here, but might be less exact */
420	if (0 <= (int)etp_nthreads () + (int)etp_npending () - (int)etp_nreqs ())	519	if (ecb_expect_true (0 <= (int)etp_nthreads () + (int)etp_npending () - (int)etp_nreqs ()))
421	return;	520	return;
422		521
423	etp_start_thread ();	522	etp_start_thread ();
424	}	523	}
425		524
		525	static void ecb_cold
426	static void etp_end_thread (void)	526	etp_end_thread (void)
427	{	527	{
428	eio_req *req = calloc (1, sizeof (eio_req));	528	eio_req *req = calloc (1, sizeof (eio_req));
429		529
430	req->type = -1;	530	req->type = -1;
431	req->pri = ETP_PRI_MAX - ETP_PRI_MIN;	531	req->pri = ETP_PRI_MAX - ETP_PRI_MIN;
…		…
438	X_LOCK (wrklock);	538	X_LOCK (wrklock);
439	--started;	539	--started;
440	X_UNLOCK (wrklock);	540	X_UNLOCK (wrklock);
441	}	541	}
442		542
443	static int etp_poll (void)	543	static int
		544	etp_poll (void)
444	{	545	{
445	unsigned int maxreqs;	546	unsigned int maxreqs;
446	unsigned int maxtime;	547	unsigned int maxtime;
447	struct timeval tv_start, tv_now;	548	struct timeval tv_start, tv_now;
448		549
…		…
478		579
479	X_LOCK (reqlock);	580	X_LOCK (reqlock);
480	--nreqs;	581	--nreqs;
481	X_UNLOCK (reqlock);	582	X_UNLOCK (reqlock);
482		583
483	if (req->type == EIO_GROUP && req->size)	584	if (ecb_expect_false (req->type == EIO_GROUP && req->size))
484	{	585	{
485	req->int1 = 1; /* mark request as delayed */	586	req->int1 = 1; /* mark request as delayed */
486	continue;	587	continue;
487	}	588	}
488	else	589	else
489	{	590	{
490	int res = ETP_FINISH (req);	591	int res = ETP_FINISH (req);
491	if (res)	592	if (ecb_expect_false (res))
492	return res;	593	return res;
493	}	594	}
494		595
495	if (maxreqs && !--maxreqs)	596	if (ecb_expect_false (maxreqs && !--maxreqs))
496	break;	597	break;
497		598
498	if (maxtime)	599	if (maxtime)
499	{	600	{
500	gettimeofday (&tv_now, 0);	601	gettimeofday (&tv_now, 0);
…		…
506		607
507	errno = EAGAIN;	608	errno = EAGAIN;
508	return -1;	609	return -1;
509	}	610	}
510		611
		612	static void
511	static void etp_cancel (ETP_REQ *req)	613	etp_cancel (ETP_REQ *req)
512	{	614	{
513	X_LOCK (wrklock);	615	req->cancelled = 1;
514	req->flags \|= EIO_FLAG_CANCELLED;
515	X_UNLOCK (wrklock);
516		616
517	eio_grp_cancel (req);	617	eio_grp_cancel (req);
518	}	618	}
519		619
		620	static void
520	static void etp_submit (ETP_REQ *req)	621	etp_submit (ETP_REQ *req)
521	{	622	{
522	req->pri -= ETP_PRI_MIN;	623	req->pri -= ETP_PRI_MIN;
523		624
524	if (req->pri < ETP_PRI_MIN - ETP_PRI_MIN) req->pri = ETP_PRI_MIN - ETP_PRI_MIN;	625	if (ecb_expect_false (req->pri < ETP_PRI_MIN - ETP_PRI_MIN)) req->pri = ETP_PRI_MIN - ETP_PRI_MIN;
525	if (req->pri > ETP_PRI_MAX - ETP_PRI_MIN) req->pri = ETP_PRI_MAX - ETP_PRI_MIN;	626	if (ecb_expect_false (req->pri > ETP_PRI_MAX - ETP_PRI_MIN)) req->pri = ETP_PRI_MAX - ETP_PRI_MIN;
526		627
		628	if (ecb_expect_false (req->type == EIO_GROUP))
		629	{
		630	/* I hope this is worth it :/ */
527	X_LOCK (reqlock);	631	X_LOCK (reqlock);
528	++nreqs;	632	++nreqs;
		633	X_UNLOCK (reqlock);
		634
		635	X_LOCK (reslock);
		636
		637	++npending;
		638
		639	if (!reqq_push (&res_queue, req) && want_poll_cb)
		640	want_poll_cb ();
		641
		642	X_UNLOCK (reslock);
		643	}
		644	else
		645	{
		646	X_LOCK (reqlock);
		647	++nreqs;
529	++nready;	648	++nready;
530	reqq_push (&req_queue, req);	649	reqq_push (&req_queue, req);
531	X_COND_SIGNAL (reqwait);	650	X_COND_SIGNAL (reqwait);
532	X_UNLOCK (reqlock);	651	X_UNLOCK (reqlock);
533		652
534	etp_maybe_start_thread ();	653	etp_maybe_start_thread ();
		654	}
535	}	655	}
536		656
		657	static void ecb_cold
537	static void etp_set_max_poll_time (double nseconds)	658	etp_set_max_poll_time (double nseconds)
538	{	659	{
539	if (WORDACCESS_UNSAFE) X_LOCK (reslock);	660	if (WORDACCESS_UNSAFE) X_LOCK (reslock);
540	max_poll_time = nseconds;	661	max_poll_time = nseconds * EIO_TICKS;
541	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);	662	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);
542	}	663	}
543		664
		665	static void ecb_cold
544	static void etp_set_max_poll_reqs (unsigned int maxreqs)	666	etp_set_max_poll_reqs (unsigned int maxreqs)
545	{	667	{
546	if (WORDACCESS_UNSAFE) X_LOCK (reslock);	668	if (WORDACCESS_UNSAFE) X_LOCK (reslock);
547	max_poll_reqs = maxreqs;	669	max_poll_reqs = maxreqs;
548	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);	670	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);
549	}	671	}
550		672
		673	static void ecb_cold
551	static void etp_set_max_idle (unsigned int nthreads)	674	etp_set_max_idle (unsigned int nthreads)
552	{	675	{
553	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);	676	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
554	max_idle = nthreads <= 0 ? 1 : nthreads;	677	max_idle = nthreads;
555	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);	678	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
556	}	679	}
557		680
		681	static void ecb_cold
		682	etp_set_idle_timeout (unsigned int seconds)
		683	{
		684	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
		685	idle_timeout = seconds;
		686	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
		687	}
		688
		689	static void ecb_cold
558	static void etp_set_min_parallel (unsigned int nthreads)	690	etp_set_min_parallel (unsigned int nthreads)
559	{	691	{
560	if (wanted < nthreads)	692	if (wanted < nthreads)
561	wanted = nthreads;	693	wanted = nthreads;
562	}	694	}
563		695
		696	static void ecb_cold
564	static void etp_set_max_parallel (unsigned int nthreads)	697	etp_set_max_parallel (unsigned int nthreads)
565	{	698	{
566	if (wanted > nthreads)	699	if (wanted > nthreads)
567	wanted = nthreads;	700	wanted = nthreads;
568		701
569	while (started > wanted)	702	while (started > wanted)
570	etp_end_thread ();	703	etp_end_thread ();
571	}	704	}
572		705
573	/*****************************************************************************/	706	/*****************************************************************************/
574		707
		708	static void
575	static void grp_try_feed (eio_req *grp)	709	grp_try_feed (eio_req *grp)
576	{	710	{
577	while (grp->size < grp->int2 && !EIO_CANCELLED (grp))	711	while (grp->size < grp->int2 && !EIO_CANCELLED (grp))
578	{	712	{
579	int old_len = grp->size;	713	grp->flags &= ~EIO_FLAG_GROUPADD;
580		714
581	EIO_FEED (grp);	715	EIO_FEED (grp);
582		716
583	/* stop if no progress has been made */	717	/* stop if no progress has been made */
584	if (old_len == grp->size)	718	if (!(grp->flags & EIO_FLAG_GROUPADD))
585	{	719	{
586	grp->feed = 0;	720	grp->feed = 0;
587	break;	721	break;
588	}	722	}
589	}	723	}
590	}	724	}
591		725
		726	static int
592	static int grp_dec (eio_req *grp)	727	grp_dec (eio_req *grp)
593	{	728	{
594	--grp->size;	729	--grp->size;
595		730
596	/* call feeder, if applicable */	731	/* call feeder, if applicable */
597	grp_try_feed (grp);	732	grp_try_feed (grp);
…		…
601	return eio_finish (grp);	736	return eio_finish (grp);
602	else	737	else
603	return 0;	738	return 0;
604	}	739	}
605		740
		741	static void
606	void eio_destroy (eio_req *req)	742	eio_destroy (eio_req *req)
607	{	743	{
608	if ((req)->flags & EIO_FLAG_PTR1_FREE) free (req->ptr1);	744	if ((req)->flags & EIO_FLAG_PTR1_FREE) free (req->ptr1);
609	if ((req)->flags & EIO_FLAG_PTR2_FREE) free (req->ptr2);	745	if ((req)->flags & EIO_FLAG_PTR2_FREE) free (req->ptr2);
610		746
611	EIO_DESTROY (req);	747	EIO_DESTROY (req);
612	}	748	}
613		749
		750	static int
614	static int eio_finish (eio_req *req)	751	eio_finish (eio_req *req)
615	{	752	{
616	int res = EIO_FINISH (req);	753	int res = EIO_FINISH (req);
617		754
618	if (req->grp)	755	if (req->grp)
619	{	756	{
…		…
627	if (grp->grp_first == req)	764	if (grp->grp_first == req)
628	grp->grp_first = req->grp_next;	765	grp->grp_first = req->grp_next;
629		766
630	res2 = grp_dec (grp);	767	res2 = grp_dec (grp);
631		768
632	if (!res && res2)	769	if (!res)
633	res = res2;	770	res = res2;
634	}	771	}
635		772
636	eio_destroy (req);	773	eio_destroy (req);
637		774
638	return res;	775	return res;
639	}	776	}
640		777
		778	void
641	void eio_grp_cancel (eio_req *grp)	779	eio_grp_cancel (eio_req *grp)
642	{	780	{
643	for (grp = grp->grp_first; grp; grp = grp->grp_next)	781	for (grp = grp->grp_first; grp; grp = grp->grp_next)
644	eio_cancel (grp);	782	eio_cancel (grp);
645	}	783	}
646		784
		785	void
647	void eio_cancel (eio_req *req)	786	eio_cancel (eio_req *req)
648	{	787	{
649	etp_cancel (req);	788	etp_cancel (req);
650	}	789	}
651		790
		791	void
652	void eio_submit (eio_req *req)	792	eio_submit (eio_req *req)
653	{	793	{
654	etp_submit (req);	794	etp_submit (req);
655	}	795	}
656		796
657	unsigned int eio_nreqs (void)	797	unsigned int
		798	eio_nreqs (void)
658	{	799	{
659	return etp_nreqs ();	800	return etp_nreqs ();
660	}	801	}
661		802
662	unsigned int eio_nready (void)	803	unsigned int
		804	eio_nready (void)
663	{	805	{
664	return etp_nready ();	806	return etp_nready ();
665	}	807	}
666		808
667	unsigned int eio_npending (void)	809	unsigned int
		810	eio_npending (void)
668	{	811	{
669	return etp_npending ();	812	return etp_npending ();
670	}	813	}
671		814
672	unsigned int eio_nthreads (void)	815	unsigned int ecb_cold
		816	eio_nthreads (void)
673	{	817	{
674	return etp_nthreads ();	818	return etp_nthreads ();
675	}	819	}
676		820
		821	void ecb_cold
677	void eio_set_max_poll_time (double nseconds)	822	eio_set_max_poll_time (double nseconds)
678	{	823	{
679	etp_set_max_poll_time (nseconds);	824	etp_set_max_poll_time (nseconds);
680	}	825	}
681		826
		827	void ecb_cold
682	void eio_set_max_poll_reqs (unsigned int maxreqs)	828	eio_set_max_poll_reqs (unsigned int maxreqs)
683	{	829	{
684	etp_set_max_poll_reqs (maxreqs);	830	etp_set_max_poll_reqs (maxreqs);
685	}	831	}
686		832
		833	void ecb_cold
687	void eio_set_max_idle (unsigned int nthreads)	834	eio_set_max_idle (unsigned int nthreads)
688	{	835	{
689	etp_set_max_idle (nthreads);	836	etp_set_max_idle (nthreads);
690	}	837	}
691		838
		839	void ecb_cold
		840	eio_set_idle_timeout (unsigned int seconds)
		841	{
		842	etp_set_idle_timeout (seconds);
		843	}
		844
		845	void ecb_cold
692	void eio_set_min_parallel (unsigned int nthreads)	846	eio_set_min_parallel (unsigned int nthreads)
693	{	847	{
694	etp_set_min_parallel (nthreads);	848	etp_set_min_parallel (nthreads);
695	}	849	}
696		850
		851	void ecb_cold
697	void eio_set_max_parallel (unsigned int nthreads)	852	eio_set_max_parallel (unsigned int nthreads)
698	{	853	{
699	etp_set_max_parallel (nthreads);	854	etp_set_max_parallel (nthreads);
700	}	855	}
701		856
702	int eio_poll (void)	857	int eio_poll (void)
…		…
706		861
707	/*****************************************************************************/	862	/*****************************************************************************/
708	/* work around various missing functions */	863	/* work around various missing functions */
709		864
710	#if !HAVE_PREADWRITE	865	#if !HAVE_PREADWRITE
		866	# undef pread
		867	# undef pwrite
711	# define pread eio__pread	868	# define pread eio__pread
712	# define pwrite eio__pwrite	869	# define pwrite eio__pwrite
713		870
714	static ssize_t	871	static eio_ssize_t
715	eio__pread (int fd, void *buf, size_t count, off_t offset)	872	eio__pread (int fd, void *buf, size_t count, off_t offset)
716	{	873	{
717	ssize_t res;	874	eio_ssize_t res;
718	off_t ooffset;	875	off_t ooffset;
719		876
720	X_LOCK (preadwritelock);	877	X_LOCK (preadwritelock);
721	ooffset = lseek (fd, 0, SEEK_CUR);	878	ooffset = lseek (fd, 0, SEEK_CUR);
722	lseek (fd, offset, SEEK_SET);	879	lseek (fd, offset, SEEK_SET);
…		…
725	X_UNLOCK (preadwritelock);	882	X_UNLOCK (preadwritelock);
726		883
727	return res;	884	return res;
728	}	885	}
729		886
730	static ssize_t	887	static eio_ssize_t
731	eio__pwrite (int fd, void *buf, size_t count, off_t offset)	888	eio__pwrite (int fd, void *buf, size_t count, off_t offset)
732	{	889	{
733	ssize_t res;	890	eio_ssize_t res;
734	off_t ooffset;	891	off_t ooffset;
735		892
736	X_LOCK (preadwritelock);	893	X_LOCK (preadwritelock);
737	ooffset = lseek (fd, 0, SEEK_CUR);	894	ooffset = lseek (fd, 0, SEEK_CUR);
738	lseek (fd, offset, SEEK_SET);	895	lseek (fd, offset, SEEK_SET);
739	res = write (fd, buf, count);	896	res = write (fd, buf, count);
740	lseek (fd, offset, SEEK_SET);	897	lseek (fd, ooffset, SEEK_SET);
741	X_UNLOCK (preadwritelock);	898	X_UNLOCK (preadwritelock);
742		899
743	return res;	900	return res;
744	}	901	}
745	#endif	902	#endif
746		903
747	#ifndef HAVE_FUTIMES	904	#ifndef HAVE_UTIMES
748		905
		906	# undef utimes
749	# define utimes(path,times) eio__utimes (path, times)	907	# define utimes(path,times) eio__utimes (path, times)
750	# define futimes(fd,times) eio__futimes (fd, times)
751		908
752	static int	909	static int
753	eio__utimes (const char *filename, const struct timeval times[2])	910	eio__utimes (const char *filename, const struct timeval times[2])
754	{	911	{
755	if (times)	912	if (times)
…		…
763	}	920	}
764	else	921	else
765	return utime (filename, 0);	922	return utime (filename, 0);
766	}	923	}
767		924
		925	#endif
		926
		927	#ifndef HAVE_FUTIMES
		928
		929	# undef futimes
		930	# define futimes(fd,times) eio__futimes (fd, times)
		931
		932	static int
768	static int eio__futimes (int fd, const struct timeval tv[2])	933	eio__futimes (int fd, const struct timeval tv[2])
769	{	934	{
770	errno = ENOSYS;	935	errno = ENOSYS;
771	return -1;	936	return -1;
772	}	937	}
773		938
774	#endif	939	#endif
775		940
776	#if !HAVE_FDATASYNC	941	#if !HAVE_FDATASYNC
		942	# undef fdatasync
777	# define fdatasync fsync	943	# define fdatasync(fd) fsync (fd)
778	#endif	944	#endif
		945
		946	static int
		947	eio__syncfs (int fd)
		948	{
		949	int res;
		950
		951	#if HAVE_SYS_SYNCFS
		952	res = (int)syscall (__NR_syncfs, (int)(fd));
		953	#else
		954	res = -1;
		955	errno = ENOSYS;
		956	#endif
		957
		958	if (res < 0 && errno == ENOSYS && fd >= 0)
		959	sync ();
		960
		961	return res;
		962	}
		963
		964	/* sync_file_range always needs emulation */
		965	static int
		966	eio__sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags)
		967	{
		968	#if HAVE_SYNC_FILE_RANGE
		969	int res;
		970
		971	if (EIO_SYNC_FILE_RANGE_WAIT_BEFORE != SYNC_FILE_RANGE_WAIT_BEFORE
		972	\|\| EIO_SYNC_FILE_RANGE_WRITE != SYNC_FILE_RANGE_WRITE
		973	\|\| EIO_SYNC_FILE_RANGE_WAIT_AFTER != SYNC_FILE_RANGE_WAIT_AFTER)
		974	{
		975	flags = 0
		976	\| (flags & EIO_SYNC_FILE_RANGE_WAIT_BEFORE ? SYNC_FILE_RANGE_WAIT_BEFORE : 0)
		977	\| (flags & EIO_SYNC_FILE_RANGE_WRITE ? SYNC_FILE_RANGE_WRITE : 0)
		978	\| (flags & EIO_SYNC_FILE_RANGE_WAIT_AFTER ? SYNC_FILE_RANGE_WAIT_AFTER : 0);
		979	}
		980
		981	res = sync_file_range (fd, offset, nbytes, flags);
		982
		983	if (!res \|\| errno != ENOSYS)
		984	return res;
		985	#endif
		986
		987	/* even though we could play tricks with the flags, it's better to always
		988	* call fdatasync, as that matches the expectation of its users best */
		989	return fdatasync (fd);
		990	}
		991
		992	static int
		993	eio__fallocate (int fd, int mode, off_t offset, size_t len)
		994	{
		995	#if HAVE_FALLOCATE
		996	return fallocate (fd, mode, offset, len);
		997	#else
		998	errno = ENOSYS;
		999	return -1;
		1000	#endif
		1001	}
779		1002
780	#if !HAVE_READAHEAD	1003	#if !HAVE_READAHEAD
		1004	# undef readahead
781	# define readahead(fd,offset,count) eio__readahead (fd, offset, count, self)	1005	# define readahead(fd,offset,count) eio__readahead (fd, offset, count, self)
782		1006
783	static ssize_t	1007	static eio_ssize_t
784	eio__readahead (int fd, off_t offset, size_t count, etp_worker *self)	1008	eio__readahead (int fd, off_t offset, size_t count, etp_worker *self)
785	{	1009	{
786	size_t todo = count;	1010	size_t todo = count;
787	dBUF;	1011	dBUF;
788		1012
…		…
793	pread (fd, eio_buf, len, offset);	1017	pread (fd, eio_buf, len, offset);
794	offset += len;	1018	offset += len;
795	todo -= len;	1019	todo -= len;
796	}	1020	}
797		1021
		1022	FUBd;
		1023
798	errno = 0;	1024	errno = 0;
799	return count;	1025	return count;
800	}	1026	}
801		1027
802	#endif	1028	#endif
803		1029
804	/* sendfile always needs emulation */	1030	/* sendfile always needs emulation */
805	static ssize_t	1031	static eio_ssize_t
806	eio__sendfile (int ofd, int ifd, off_t offset, size_t count, etp_worker *self)	1032	eio__sendfile (int ofd, int ifd, off_t offset, size_t count)
807	{	1033	{
		1034	eio_ssize_t written = 0;
808	ssize_t res;	1035	eio_ssize_t res;
809		1036
810	if (!count)	1037	if (!count)
811	return 0;	1038	return 0;
812		1039
		1040	for (;;)
		1041	{
		1042	#ifdef __APPLE__
		1043	# undef HAVE_SENDFILE /* broken, as everything on os x */
		1044	#endif
813	#if HAVE_SENDFILE	1045	#if HAVE_SENDFILE
814	# if __linux	1046	# if __linux
		1047	off_t soffset = offset;
815	res = sendfile (ofd, ifd, &offset, count);	1048	res = sendfile (ofd, ifd, &soffset, count);
816		1049
817	# elif __freebsd	1050	# elif __FreeBSD__
818	/*	1051	/*
819	* Of course, the freebsd sendfile is a dire hack with no thoughts	1052	* Of course, the freebsd sendfile is a dire hack with no thoughts
820	* wasted on making it similar to other I/O functions.	1053	* wasted on making it similar to other I/O functions.
821	*/	1054	*/
822	{
823	off_t sbytes;	1055	off_t sbytes;
824	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);	1056	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
825		1057
826	if (res < 0 && sbytes)	1058	#if 0 /* according to the manpage, this is correct, but broken behaviour */
827	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */	1059	/* freebsd' sendfile will return 0 on success */
		1060	/* freebsd 8 documents it as only setting sbytes on EINTR and EAGAIN, but /
		1061	/* not on e.g. EIO or EPIPE - sounds broken */
		1062	if ((res < 0 && (errno == EAGAIN \|\| errno == EINTR) && sbytes) \|\| res == 0)
828	res = sbytes;	1063	res = sbytes;
829	}	1064	#endif
		1065
		1066	/* according to source inspection, this is correct, and useful behaviour */
		1067	if (sbytes)
		1068	res = sbytes;
		1069
		1070	# elif defined (__APPLE__)
		1071	off_t sbytes = count;
		1072	res = sendfile (ifd, ofd, offset, &sbytes, 0, 0);
		1073
		1074	/* according to the manpage, sbytes is always valid */
		1075	if (sbytes)
		1076	res = sbytes;
830		1077
831	# elif __hpux	1078	# elif __hpux
832	res = sendfile (ofd, ifd, offset, count, 0, 0);	1079	res = sendfile (ofd, ifd, offset, count, 0, 0);
833		1080
834	# elif __solaris	1081	# elif __solaris
835	{
836	struct sendfilevec vec;	1082	struct sendfilevec vec;
837	size_t sbytes;	1083	size_t sbytes;
838		1084
839	vec.sfv_fd = ifd;	1085	vec.sfv_fd = ifd;
840	vec.sfv_flag = 0;	1086	vec.sfv_flag = 0;
841	vec.sfv_off = offset;	1087	vec.sfv_off = offset;
842	vec.sfv_len = count;	1088	vec.sfv_len = count;
843		1089
844	res = sendfilev (ofd, &vec, 1, &sbytes);	1090	res = sendfilev (ofd, &vec, 1, &sbytes);
845		1091
846	if (res < 0 && sbytes)	1092	if (res < 0 && sbytes)
847	res = sbytes;	1093	res = sbytes;
848	}
849		1094
850	# endif	1095	# endif
		1096
		1097	#elif defined (_WIN32) && 0
		1098	/* does not work, just for documentation of what would need to be done */
		1099	/* actually, cannot be done like this, as TransmitFile changes the file offset, */
		1100	/* libeio guarantees that the file offset does not change, and windows */
		1101	/* has no way to get an independent handle to the same file description */
		1102	HANDLE h = TO_SOCKET (ifd);
		1103	SetFilePointer (h, offset, 0, FILE_BEGIN);
		1104	res = TransmitFile (TO_SOCKET (ofd), h, count, 0, 0, 0, 0);
		1105
851	#else	1106	#else
852	res = -1;	1107	res = -1;
853	errno = ENOSYS;	1108	errno = ENOSYS;
854	#endif	1109	#endif
855		1110
		1111	/* we assume sendfile can copy at least 128mb in one go */
		1112	if (res <= 128 * 1024 * 1024)
		1113	{
		1114	if (res > 0)
		1115	written += res;
		1116
		1117	if (written)
		1118	return written;
		1119
		1120	break;
		1121	}
		1122	else
		1123	{
		1124	/* if we requested more, then probably the kernel was lazy */
		1125	written += res;
		1126	offset += res;
		1127	count -= res;
		1128
		1129	if (!count)
		1130	return written;
		1131	}
		1132	}
		1133
856	if (res < 0	1134	if (res < 0
857	&& (errno == ENOSYS \|\| errno == EINVAL \|\| errno == ENOTSOCK	1135	&& (errno == ENOSYS \|\| errno == EINVAL \|\| errno == ENOTSOCK
		1136	/* BSDs */
		1137	#ifdef ENOTSUP /* sigh, if the steenking pile called openbsd would only try to at least compile posix code... */
		1138	\|\| errno == ENOTSUP
		1139	#endif
		1140	#ifdef EOPNOTSUPP /* windows */
		1141	\|\| errno == EOPNOTSUPP /* BSDs */
		1142	#endif
858	#if __solaris	1143	#if __solaris
859	\|\| errno == EAFNOSUPPORT \|\| errno == EPROTOTYPE	1144	\|\| errno == EAFNOSUPPORT \|\| errno == EPROTOTYPE
860	#endif	1145	#endif
861	)	1146	)
862	)	1147	)
…		…
866		1151
867	res = 0;	1152	res = 0;
868		1153
869	while (count)	1154	while (count)
870	{	1155	{
871	ssize_t cnt;	1156	eio_ssize_t cnt;
872		1157
873	cnt = pread (ifd, eio_buf, count > EIO_BUFSIZE ? EIO_BUFSIZE : count, offset);	1158	cnt = pread (ifd, eio_buf, count > EIO_BUFSIZE ? EIO_BUFSIZE : count, offset);
874		1159
875	if (cnt <= 0)	1160	if (cnt <= 0)
876	{	1161	{
…		…
888		1173
889	offset += cnt;	1174	offset += cnt;
890	res += cnt;	1175	res += cnt;
891	count -= cnt;	1176	count -= cnt;
892	}	1177	}
		1178
		1179	FUBd;
893	}	1180	}
894		1181
895	return res;	1182	return res;
		1183	}
		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);
896	}	1627	}
897		1628
898	/* read a full directory */	1629	/* read a full directory */
899	static void	1630	static void
900	eio__scandir (eio_req req, etp_worker self)	1631	eio__scandir (eio_req req, etp_worker self)
901	{	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
902	DIR *dirp;	1645	DIR *dirp;
903	EIO_STRUCT_DIRENT *entp;	1646	EIO_STRUCT_DIRENT *entp;
904	char name, names;	1647	#endif
905	int memlen = 4096;
906	int memofs = 0;
907	int res = 0;
908		1648
909	X_LOCK (wrklock);	1649	req->result = -1;
910	/* 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
911	self->dirp = dirp = opendir (req->ptr1);	1698	dirp = opendir (req->ptr1);
		1699	#endif
		1700
912	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;
913	req->ptr2 = names = malloc (memlen);	1706	req->ptr2 = names = malloc (namesalloc);
914	X_UNLOCK (wrklock);
915		1707
916	if (dirp && names)	1708	if (dirp && names && (!flags \|\| dents))
917	for (;;)	1709	for (;;)
918	{	1710	{
		1711	int done;
		1712
		1713	#ifdef _WIN32
		1714	done = !dirp;
		1715	#else
919	errno = 0;	1716	errno = 0;
920	entp = readdir (dirp);	1717	entp = readdir (dirp);
		1718	done = !entp;
		1719	#endif
921		1720
922	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
923	break;	1765	break;
		1766	}
924		1767
925	name = entp->d_name;	1768	/* now add the entry to our list(s) */
		1769	name = D_NAME (entp);
926		1770
		1771	/* skip . and .. entries */
927	if (name [0] != '.' \|\| (name [1] && (name [1] != '.' \|\| name [2])))	1772	if (name [0] != '.' \|\| (name [1] && (name [1] != '.' \|\| name [2])))
928	{	1773	{
929	int len = strlen (name) + 1;	1774	int len = D_NAMLEN (entp) + 1;
930		1775
931	res++;	1776	while (ecb_expect_false (namesoffs + len > namesalloc))
932
933	while (memofs + len > memlen)
934	{	1777	{
935	memlen *= 2;	1778	namesalloc *= 2;
936	X_LOCK (wrklock);
937	req->ptr2 = names = realloc (names, memlen);	1779	req->ptr2 = names = realloc (names, namesalloc);
938	X_UNLOCK (wrklock);
939		1780
940	if (!names)	1781	if (!names)
941	break;	1782	break;
942	}	1783	}
943		1784
944	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
945	memofs += len;	1875	namesoffs += len;
		1876	++dentoffs;
946	}	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
947	}	1892	}
948
949	if (errno)
950	res = -1;
951
952	req->result = res;
953	}	1893	}
954		1894
955	/*****************************************************************************/	1895	/*****************************************************************************/
956		1896
957	#define ALLOC(len) \	1897	#define ALLOC(len) \
…		…
973	{	1913	{
974	ETP_REQ *req;	1914	ETP_REQ *req;
975	struct timespec ts;	1915	struct timespec ts;
976	etp_worker self = (etp_worker )thr_arg;	1916	etp_worker self = (etp_worker )thr_arg;
977		1917
978	/* try to distribute timeouts somewhat randomly */	1918	/* try to distribute timeouts somewhat evenly */
979	ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL);	1919	ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL);
980		1920
981	for (;;)	1921	for (;;)
982	{	1922	{
		1923	ts.tv_sec = 0;
		1924
983	X_LOCK (reqlock);	1925	X_LOCK (reqlock);
984		1926
985	for (;;)	1927	for (;;)
986	{	1928	{
987	self->req = req = reqq_shift (&req_queue);	1929	self->req = req = reqq_shift (&req_queue);
988		1930
989	if (req)	1931	if (req)
990	break;	1932	break;
991		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
992	++idle;	1943	++idle;
993		1944
994	ts.tv_sec = time (0) + IDLE_TIMEOUT;	1945	if (idle <= max_idle)
995	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
996	{	1949	{
997	if (idle > max_idle)	1950	/* initialise timeout once */
998	{	1951	if (!ts.tv_sec)
999	--idle;	1952	ts.tv_sec = time (0) + idle_timeout;
1000	X_UNLOCK (reqlock);
1001	X_LOCK (wrklock);
1002	--started;
1003	X_UNLOCK (wrklock);
1004	goto quit;
1005	}
1006		1953
1007	/* we are allowed to idle, so do so without any timeout */
1008	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.,.. */
1009	}	1956	}
1010		1957
1011	--idle;	1958	--idle;
1012	}	1959	}
1013		1960
…		…
1016	X_UNLOCK (reqlock);	1963	X_UNLOCK (reqlock);
1017		1964
1018	if (req->type < 0)	1965	if (req->type < 0)
1019	goto quit;	1966	goto quit;
1020		1967
1021	if (!EIO_CANCELLED (req))
1022	ETP_EXECUTE (self, req);	1968	ETP_EXECUTE (self, req);
1023		1969
1024	X_LOCK (reslock);	1970	X_LOCK (reslock);
1025		1971
1026	++npending;	1972	++npending;
1027		1973
…		…
1042	return 0;	1988	return 0;
1043	}	1989	}
1044		1990
1045	/*****************************************************************************/	1991	/*****************************************************************************/
1046		1992
		1993	int ecb_cold
1047	int eio_init (void (want_poll)(void), void (done_poll)(void))	1994	eio_init (void (want_poll)(void), void (done_poll)(void))
1048	{	1995	{
		1996	#if !HAVE_PREADWRITE
		1997	X_MUTEX_CREATE (preadwritelock);
		1998	#endif
		1999
1049	return etp_init (want_poll, done_poll);	2000	return etp_init (want_poll, done_poll);
1050	}	2001	}
1051		2002
		2003	ecb_inline void
1052	static void eio_api_destroy (eio_req *req)	2004	eio_api_destroy (eio_req *req)
1053	{	2005	{
1054	free (req);	2006	free (req);
1055	}	2007	}
1056		2008
1057	#define REQ(rtype) \	2009	#define REQ(rtype) \
…		…
1076	{ \	2028	{ \
1077	eio_api_destroy (req); \	2029	eio_api_destroy (req); \
1078	return 0; \	2030	return 0; \
1079	}	2031	}
1080		2032
		2033	static void
1081	static void eio_execute (etp_worker self, eio_req req)	2034	eio_execute (etp_worker self, eio_req req)
1082	{	2035	{
1083	errno = 0;	2036	if (ecb_expect_false (EIO_CANCELLED (req)))
		2037	{
		2038	req->result = -1;
		2039	req->errorno = ECANCELED;
		2040	return;
		2041	}
1084		2042
1085	switch (req->type)	2043	switch (req->type)
1086	{	2044	{
1087	case EIO_READ: ALLOC (req->size);	2045	case EIO_READ: ALLOC (req->size);
1088	req->result = req->offs >= 0	2046	req->result = req->offs >= 0
…		…
1091	case EIO_WRITE: req->result = req->offs >= 0	2049	case EIO_WRITE: req->result = req->offs >= 0
1092	? pwrite (req->int1, req->ptr2, req->size, req->offs)	2050	? pwrite (req->int1, req->ptr2, req->size, req->offs)
1093	: write (req->int1, req->ptr2, req->size); break;	2051	: write (req->int1, req->ptr2, req->size); break;
1094		2052
1095	case EIO_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;	2053	case EIO_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1096	case EIO_SENDFILE: req->result = eio__sendfile (req->int1, req->int2, req->offs, req->size, self); break;	2054	case EIO_SENDFILE: req->result = eio__sendfile (req->int1, req->int2, req->offs, req->size); break;
1097		2055
1098	case EIO_STAT: ALLOC (sizeof (EIO_STRUCT_STAT));	2056	case EIO_STAT: ALLOC (sizeof (EIO_STRUCT_STAT));
1099	req->result = stat (req->ptr1, (EIO_STRUCT_STAT *)req->ptr2); break;	2057	req->result = stat (req->ptr1, (EIO_STRUCT_STAT *)req->ptr2); break;
1100	case EIO_LSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));	2058	case EIO_LSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));
1101	req->result = lstat (req->ptr1, (EIO_STRUCT_STAT *)req->ptr2); break;	2059	req->result = lstat (req->ptr1, (EIO_STRUCT_STAT *)req->ptr2); break;
1102	case EIO_FSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));	2060	case EIO_FSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));
1103	req->result = fstat (req->int1, (EIO_STRUCT_STAT *)req->ptr2); break;	2061	req->result = fstat (req->int1, (EIO_STRUCT_STAT *)req->ptr2); break;
		2062
		2063	case EIO_STATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS));
		2064	req->result = statvfs (req->ptr1, (EIO_STRUCT_STATVFS *)req->ptr2); break;
		2065	case EIO_FSTATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS));
		2066	req->result = fstatvfs (req->int1, (EIO_STRUCT_STATVFS *)req->ptr2); break;
1104		2067
1105	case EIO_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break;	2068	case EIO_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break;
1106	case EIO_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;	2069	case EIO_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
1107	case EIO_CHMOD: req->result = chmod (req->ptr1, (mode_t)req->int2); break;	2070	case EIO_CHMOD: req->result = chmod (req->ptr1, (mode_t)req->int2); break;
1108	case EIO_FCHMOD: req->result = fchmod (req->int1, (mode_t)req->int2); break;	2071	case EIO_FCHMOD: req->result = fchmod (req->int1, (mode_t)req->int2); break;
…		…
1116	case EIO_RMDIR: req->result = rmdir (req->ptr1); break;	2079	case EIO_RMDIR: req->result = rmdir (req->ptr1); break;
1117	case EIO_MKDIR: req->result = mkdir (req->ptr1, (mode_t)req->int2); break;	2080	case EIO_MKDIR: req->result = mkdir (req->ptr1, (mode_t)req->int2); break;
1118	case EIO_RENAME: req->result = rename (req->ptr1, req->ptr2); break;	2081	case EIO_RENAME: req->result = rename (req->ptr1, req->ptr2); break;
1119	case EIO_LINK: req->result = link (req->ptr1, req->ptr2); break;	2082	case EIO_LINK: req->result = link (req->ptr1, req->ptr2); break;
1120	case EIO_SYMLINK: req->result = symlink (req->ptr1, req->ptr2); break;	2083	case EIO_SYMLINK: req->result = symlink (req->ptr1, req->ptr2); break;
1121	case EIO_MKNOD: req->result = mknod (req->ptr1, (mode_t)req->int2, (dev_t)req->int3); break;	2084	case EIO_MKNOD: req->result = mknod (req->ptr1, (mode_t)req->int2, (dev_t)req->offs); break;
1122		2085
		2086	case EIO_REALPATH: eio__realpath (req, self); break;
		2087
1123	case EIO_READLINK: ALLOC (NAME_MAX);	2088	case EIO_READLINK: ALLOC (PATH_MAX);
1124	req->result = readlink (req->ptr1, req->ptr2, NAME_MAX); break;	2089	req->result = readlink (req->ptr1, req->ptr2, PATH_MAX); break;
1125		2090
1126	case EIO_SYNC: req->result = 0; sync (); break;	2091	case EIO_SYNC: req->result = 0; sync (); break;
1127	case EIO_FSYNC: req->result = fsync (req->int1); break;	2092	case EIO_FSYNC: req->result = fsync (req->int1); break;
1128	case EIO_FDATASYNC: req->result = fdatasync (req->int1); break;	2093	case EIO_FDATASYNC: req->result = fdatasync (req->int1); break;
		2094	case EIO_SYNCFS: req->result = eio__syncfs (req->int1); break;
		2095	case EIO_SYNC_FILE_RANGE: req->result = eio__sync_file_range (req->int1, req->offs, req->size, req->int2); break;
		2096	case EIO_MSYNC: req->result = eio__msync (req->ptr2, req->size, req->int1); break;
		2097	case EIO_MTOUCH: req->result = eio__mtouch (req); break;
		2098	case EIO_MLOCK: req->result = eio__mlock (req->ptr2, req->size); break;
		2099	case EIO_MLOCKALL: req->result = eio__mlockall (req->int1); break;
		2100	case EIO_FALLOCATE: req->result = eio__fallocate (req->int1, req->int2, req->offs, req->size); break;
1129		2101
1130	case EIO_READDIR: eio__scandir (req, self); break;	2102	case EIO_READDIR: eio__scandir (req, self); break;
1131		2103
1132	case EIO_BUSY:	2104	case EIO_BUSY:
1133	#ifdef _WIN32	2105	#ifdef _WIN32
1134	Sleep (req->nv1 * 1000.);	2106	Sleep (req->nv1 * 1e3);
1135	#else	2107	#else
1136	{	2108	{
1137	struct timeval tv;	2109	struct timeval tv;
1138		2110
1139	tv.tv_sec = req->nv1;	2111	tv.tv_sec = req->nv1;
1140	tv.tv_usec = (req->nv1 - tv.tv_sec) * 1000000.;	2112	tv.tv_usec = (req->nv1 - tv.tv_sec) * 1e6;
1141		2113
1142	req->result = select (0, 0, 0, 0, &tv);	2114	req->result = select (0, 0, 0, 0, &tv);
1143	}	2115	}
1144	#endif	2116	#endif
1145	break;	2117	break;
…		…
1160	times = tv;	2132	times = tv;
1161	}	2133	}
1162	else	2134	else
1163	times = 0;	2135	times = 0;
1164		2136
1165
1166	req->result = req->type == EIO_FUTIME	2137	req->result = req->type == EIO_FUTIME
1167	? futimes (req->int1, times)	2138	? futimes (req->int1, times)
1168	: utimes (req->ptr1, times);	2139	: utimes (req->ptr1, times);
1169	}	2140	}
		2141	break;
1170		2142
1171	case EIO_GROUP:	2143	case EIO_GROUP:
		2144	abort (); /* handled in eio_request */
		2145
1172	case EIO_NOP:	2146	case EIO_NOP:
1173	req->result = 0;	2147	req->result = 0;
1174	break;	2148	break;
1175		2149
1176	case EIO_CUSTOM:	2150	case EIO_CUSTOM:
1177	req->feed (req);	2151	req->feed (req);
1178	break;	2152	break;
1179		2153
1180	default:	2154	default:
		2155	errno = ENOSYS;
1181	req->result = -1;	2156	req->result = -1;
1182	break;	2157	break;
1183	}	2158	}
1184		2159
1185	req->errorno = errno;	2160	req->errorno = errno;
…		…
1205	eio_req eio_fsync (int fd, int pri, eio_cb cb, void data)	2180	eio_req eio_fsync (int fd, int pri, eio_cb cb, void data)
1206	{	2181	{
1207	REQ (EIO_FSYNC); req->int1 = fd; SEND;	2182	REQ (EIO_FSYNC); req->int1 = fd; SEND;
1208	}	2183	}
1209		2184
		2185	eio_req eio_msync (void addr, size_t length, int flags, int pri, eio_cb cb, void *data)
		2186	{
		2187	REQ (EIO_MSYNC); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND;
		2188	}
		2189
1210	eio_req eio_fdatasync (int fd, int pri, eio_cb cb, void data)	2190	eio_req eio_fdatasync (int fd, int pri, eio_cb cb, void data)
1211	{	2191	{
1212	REQ (EIO_FDATASYNC); req->int1 = fd; SEND;	2192	REQ (EIO_FDATASYNC); req->int1 = fd; SEND;
1213	}	2193	}
1214		2194
		2195	eio_req eio_syncfs (int fd, int pri, eio_cb cb, void data)
		2196	{
		2197	REQ (EIO_SYNCFS); req->int1 = fd; 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_mtouch (void addr, size_t length, int flags, int pri, eio_cb cb, void *data)
		2206	{
		2207	REQ (EIO_MTOUCH); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND;
		2208	}
		2209
		2210	eio_req eio_mlock (void addr, size_t length, int pri, eio_cb cb, void *data)
		2211	{
		2212	REQ (EIO_MLOCK); req->ptr2 = addr; req->size = length; SEND;
		2213	}
		2214
		2215	eio_req eio_mlockall (int flags, int pri, eio_cb cb, void data)
		2216	{
		2217	REQ (EIO_MLOCKALL); req->int1 = flags; SEND;
		2218	}
		2219
		2220	eio_req eio_fallocate (int fd, int mode, off_t offset, size_t len, int pri, eio_cb cb, void data)
		2221	{
		2222	REQ (EIO_FALLOCATE); req->int1 = fd; req->int2 = mode; req->offs = offset; req->size = len; SEND;
		2223	}
		2224
1215	eio_req eio_close (int fd, int pri, eio_cb cb, void data)	2225	eio_req eio_close (int fd, int pri, eio_cb cb, void data)
1216	{	2226	{
1217	REQ (EIO_CLOSE); req->int1 = fd; SEND;	2227	REQ (EIO_CLOSE); req->int1 = fd; SEND;
1218	}	2228	}
1219		2229
…		…
1235	eio_req eio_fstat (int fd, int pri, eio_cb cb, void data)	2245	eio_req eio_fstat (int fd, int pri, eio_cb cb, void data)
1236	{	2246	{
1237	REQ (EIO_FSTAT); req->int1 = fd; SEND;	2247	REQ (EIO_FSTAT); req->int1 = fd; SEND;
1238	}	2248	}
1239		2249
		2250	eio_req eio_fstatvfs (int fd, int pri, eio_cb cb, void data)
		2251	{
		2252	REQ (EIO_FSTATVFS); req->int1 = fd; SEND;
		2253	}
		2254
1240	eio_req eio_futime (int fd, double atime, double mtime, int pri, eio_cb cb, void data)	2255	eio_req eio_futime (int fd, double atime, double mtime, int pri, eio_cb cb, void data)
1241	{	2256	{
1242	REQ (EIO_FUTIME); req->int1 = fd; req->nv1 = atime; req->nv2 = mtime; SEND;	2257	REQ (EIO_FUTIME); req->int1 = fd; req->nv1 = atime; req->nv2 = mtime; SEND;
1243	}	2258	}
1244		2259
…		…
1250	eio_req eio_fchmod (int fd, mode_t mode, int pri, eio_cb cb, void data)	2265	eio_req eio_fchmod (int fd, mode_t mode, int pri, eio_cb cb, void data)
1251	{	2266	{
1252	REQ (EIO_FCHMOD); req->int1 = fd; req->int2 = (long)mode; SEND;	2267	REQ (EIO_FCHMOD); req->int1 = fd; req->int2 = (long)mode; SEND;
1253	}	2268	}
1254		2269
1255	eio_req eio_fchown (int fd, uid_t uid, gid_t gid, int pri, eio_cb cb, void data)	2270	eio_req eio_fchown (int fd, eio_uid_t uid, eio_gid_t gid, int pri, eio_cb cb, void data)
1256	{	2271	{
1257	REQ (EIO_FCHOWN); req->int1 = fd; req->int2 = (long)uid; req->int3 = (long)gid; SEND;	2272	REQ (EIO_FCHOWN); req->int1 = fd; req->int2 = (long)uid; req->int3 = (long)gid; SEND;
1258	}	2273	}
1259		2274
1260	eio_req eio_dup2 (int fd, int fd2, int pri, eio_cb cb, void data)	2275	eio_req eio_dup2 (int fd, int fd2, int pri, eio_cb cb, void data)
…		…
1280	eio_req eio_truncate (const char path, off_t offset, int pri, eio_cb cb, void *data)	2295	eio_req eio_truncate (const char path, off_t offset, int pri, eio_cb cb, void *data)
1281	{	2296	{
1282	REQ (EIO_TRUNCATE); PATH; req->offs = offset; SEND;	2297	REQ (EIO_TRUNCATE); PATH; req->offs = offset; SEND;
1283	}	2298	}
1284		2299
1285	eio_req eio_chown (const char path, uid_t uid, gid_t gid, int pri, eio_cb cb, void *data)	2300	eio_req eio_chown (const char path, eio_uid_t uid, eio_gid_t gid, int pri, eio_cb cb, void *data)
1286	{	2301	{
1287	REQ (EIO_CHOWN); PATH; req->int2 = (long)uid; req->int3 = (long)gid; SEND;	2302	REQ (EIO_CHOWN); PATH; req->int2 = (long)uid; req->int3 = (long)gid; SEND;
1288	}	2303	}
1289		2304
1290	eio_req eio_chmod (const char path, mode_t mode, int pri, eio_cb cb, void *data)	2305	eio_req eio_chmod (const char path, mode_t mode, int pri, eio_cb cb, void *data)
…		…
1306	eio_req eio_readlink (const char path, int pri, eio_cb cb, void *data)	2321	eio_req eio_readlink (const char path, int pri, eio_cb cb, void *data)
1307	{	2322	{
1308	return eio__1path (EIO_READLINK, path, pri, cb, data);	2323	return eio__1path (EIO_READLINK, path, pri, cb, data);
1309	}	2324	}
1310		2325
		2326	eio_req eio_realpath (const char path, int pri, eio_cb cb, void *data)
		2327	{
		2328	return eio__1path (EIO_REALPATH, path, pri, cb, data);
		2329	}
		2330
1311	eio_req eio_stat (const char path, int pri, eio_cb cb, void *data)	2331	eio_req eio_stat (const char path, int pri, eio_cb cb, void *data)
1312	{	2332	{
1313	return eio__1path (EIO_STAT, path, pri, cb, data);	2333	return eio__1path (EIO_STAT, path, pri, cb, data);
1314	}	2334	}
1315		2335
1316	eio_req eio_lstat (const char path, int pri, eio_cb cb, void *data)	2336	eio_req eio_lstat (const char path, int pri, eio_cb cb, void *data)
1317	{	2337	{
1318	return eio__1path (EIO_LSTAT, path, pri, cb, data);	2338	return eio__1path (EIO_LSTAT, path, pri, cb, data);
1319	}	2339	}
1320		2340
		2341	eio_req eio_statvfs (const char path, int pri, eio_cb cb, void *data)
		2342	{
		2343	return eio__1path (EIO_STATVFS, path, pri, cb, data);
		2344	}
		2345
1321	eio_req eio_unlink (const char path, int pri, eio_cb cb, void *data)	2346	eio_req eio_unlink (const char path, int pri, eio_cb cb, void *data)
1322	{	2347	{
1323	return eio__1path (EIO_UNLINK, path, pri, cb, data);	2348	return eio__1path (EIO_UNLINK, path, pri, cb, data);
1324	}	2349	}
1325		2350
1326	eio_req eio_rmdir (const char path, int pri, eio_cb cb, void *data)	2351	eio_req eio_rmdir (const char path, int pri, eio_cb cb, void *data)
1327	{	2352	{
1328	return eio__1path (EIO_RMDIR, path, pri, cb, data);	2353	return eio__1path (EIO_RMDIR, path, pri, cb, data);
1329	}	2354	}
1330		2355
1331	eio_req eio_readdir (const char path, int pri, eio_cb cb, void *data)	2356	eio_req eio_readdir (const char path, int flags, int pri, eio_cb cb, void *data)
1332	{	2357	{
1333	return eio__1path (EIO_READDIR, path, pri, cb, data);	2358	REQ (EIO_READDIR); PATH; req->int1 = flags; SEND;
1334	}	2359	}
1335		2360
1336	eio_req eio_mknod (const char path, mode_t mode, dev_t dev, int pri, eio_cb cb, void *data)	2361	eio_req eio_mknod (const char path, mode_t mode, dev_t dev, int pri, eio_cb cb, void *data)
1337	{	2362	{
1338	REQ (EIO_MKNOD); PATH; req->int2 = (long)mode; req->int3 = (long)dev; SEND;	2363	REQ (EIO_MKNOD); PATH; req->int2 = (long)mode; req->offs = (off_t)dev; SEND;
1339	}	2364	}
1340		2365
1341	static eio_req *	2366	static eio_req *
1342	eio__2path (int type, const char path, const char new_path, int pri, eio_cb cb, void *data)	2367	eio__2path (int type, const char path, const char new_path, int pri, eio_cb cb, void *data)
1343	{	2368	{
…		…
1367	eio_req eio_rename (const char path, const char new_path, int pri, eio_cb cb, void data)	2392	eio_req eio_rename (const char path, const char new_path, int pri, eio_cb cb, void data)
1368	{	2393	{
1369	return eio__2path (EIO_RENAME, path, new_path, pri, cb, data);	2394	return eio__2path (EIO_RENAME, path, new_path, pri, cb, data);
1370	}	2395	}
1371		2396
1372	eio_req eio_custom (eio_cb execute, int pri, eio_cb cb, void data)	2397	eio_req eio_custom (void (execute)(eio_req ), int pri, eio_cb cb, void data)
1373	{	2398	{
1374	REQ (EIO_CUSTOM); req->feed = execute; SEND;	2399	REQ (EIO_CUSTOM); req->feed = execute; SEND;
1375	}	2400	}
1376		2401
1377	#endif	2402	#endif
…		…
1388	#undef SEND	2413	#undef SEND
1389		2414
1390	/*****************************************************************************/	2415	/*****************************************************************************/
1391	/* grp functions */	2416	/* grp functions */
1392		2417
		2418	void
1393	void eio_grp_feed (eio_req grp, void (feed)(eio_req *req), int limit)	2419	eio_grp_feed (eio_req grp, void (feed)(eio_req *req), int limit)
1394	{	2420	{
1395	grp->int2 = limit;	2421	grp->int2 = limit;
1396	grp->feed = feed;	2422	grp->feed = feed;
1397		2423
1398	grp_try_feed (grp);	2424	grp_try_feed (grp);
1399	}	2425	}
1400		2426
		2427	void
1401	void eio_grp_limit (eio_req *grp, int limit)	2428	eio_grp_limit (eio_req *grp, int limit)
1402	{	2429	{
1403	grp->int2 = limit;	2430	grp->int2 = limit;
1404		2431
1405	grp_try_feed (grp);	2432	grp_try_feed (grp);
1406	}	2433	}
1407		2434
		2435	void
1408	void eio_grp_add (eio_req grp, eio_req req)	2436	eio_grp_add (eio_req grp, eio_req req)
1409	{	2437	{
1410	assert (("cannot add requests to IO::AIO::GRP after the group finished", grp->int1 != 2));	2438	assert (("cannot add requests to IO::AIO::GRP after the group finished", grp->int1 != 2));
		2439
		2440	grp->flags \|= EIO_FLAG_GROUPADD;
1411		2441
1412	++grp->size;	2442	++grp->size;
1413	req->grp = grp;	2443	req->grp = grp;
1414		2444
1415	req->grp_prev = 0;	2445	req->grp_prev = 0;
…		…
1422	}	2452	}
1423		2453
1424	/*****************************************************************************/	2454	/*****************************************************************************/
1425	/* misc garbage */	2455	/* misc garbage */
1426		2456
		2457	eio_ssize_t
1427	ssize_t eio_sendfile_sync (int ofd, int ifd, off_t offset, size_t count)	2458	eio_sendfile_sync (int ofd, int ifd, off_t offset, size_t count)
1428	{	2459	{
1429	etp_worker wrk;
1430
1431	wrk.dbuf = 0;
1432
1433	eio__sendfile (ofd, ifd, offset, count, &wrk);	2460	return eio__sendfile (ofd, ifd, offset, count);
1434
1435	if (wrk.dbuf)
1436	free (wrk.dbuf);
1437	}	2461	}
1438		2462

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Comparing cvsroot/libeio/eio.c (file contents): Revision 1.22 by root, Fri Jul 11 10:54:50 2008 UTC vs. Revision 1.97 by root, Sun Jul 24 03:32:54 2011 UTC

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Comparing cvsroot/libeio/eio.c (file contents):
Revision 1.22 by root, Fri Jul 11 10:54:50 2008 UTC vs.
Revision 1.97 by root, Sun Jul 24 03:32:54 2011 UTC