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Comparing libeio/eio.c (file contents):
Revision 1.30 by root, Wed Jun 3 12:24:49 2009 UTC vs.
Revision 1.91 by root, Sun Jul 17 04:20:04 2011 UTC

1	/*	1	/*
2	* libeio implementation	2	* libeio implementation
3	*	3	*
4	* Copyright (c) 2007,2008 Marc Alexander Lehmann <libeio@schmorp.de>	4	* Copyright (c) 2007,2008,2009,2010,2011 Marc Alexander Lehmann <libeio@schmorp.de>
5	* All rights reserved.	5	* All rights reserved.
6	*	6	*
7	* Redistribution and use in source and binary forms, with or without modifica-	7	* Redistribution and use in source and binary forms, with or without modifica-
8	* tion, are permitted provided that the following conditions are met:	8	* tion, are permitted provided that the following conditions are met:
9	*	9	*
…		…
35	* and other provisions required by the GPL. If you do not delete the	35	* and other provisions required by the GPL. If you do not delete the
36	* provisions above, a recipient may use your version of this file under	36	* provisions above, a recipient may use your version of this file under
37	* either the BSD or the GPL.	37	* either the BSD or the GPL.
38	*/	38	*/
39		39
		40	#ifndef _WIN32
		41	# include "config.h"
		42	#endif
		43
40	#include "eio.h"	44	#include "eio.h"
		45	#include "ecb.h"
41		46
42	#ifdef EIO_STACKSIZE	47	#ifdef EIO_STACKSIZE
43	# define XTHREAD_STACKSIZE EIO_STACKSIZE	48	# define XTHREAD_STACKSIZE EIO_STACKSIZE
44	#endif	49	#endif
45	#include "xthread.h"	50	#include "xthread.h"
…		…
53	#include <sys/stat.h>	58	#include <sys/stat.h>
54	#include <limits.h>	59	#include <limits.h>
55	#include <fcntl.h>	60	#include <fcntl.h>
56	#include <assert.h>	61	#include <assert.h>
57		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
58	#ifndef EIO_FINISH	78	#ifndef EIO_FINISH
59	# 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
60	#endif	80	#endif
61		81
62	#ifndef EIO_DESTROY	82	#ifndef EIO_DESTROY
…		…
65		85
66	#ifndef EIO_FEED	86	#ifndef EIO_FEED
67	# 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)
68	#endif	88	#endif
69		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
70	#ifdef _WIN32	101	#ifdef _WIN32
71		102
72	/*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)
73		158
74	#else	159	#else
75		160
76	# include "config.h"
77	# include <sys/time.h>	161	#include <sys/time.h>
78	# include <sys/select.h>	162	#include <sys/select.h>
		163	#include <sys/statvfs.h>
79	# include <unistd.h>	164	#include <unistd.h>
80	# include <utime.h>	165	#include <utime.h>
81	# include <signal.h>	166	#include <signal.h>
82	# include <dirent.h>	167	#include <dirent.h>
83		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
84	# ifndef EIO_STRUCT_DIRENT	193	#ifndef EIO_STRUCT_DIRENT
85	# define EIO_STRUCT_DIRENT struct dirent	194	#define EIO_STRUCT_DIRENT struct dirent
86	# endif	195	#endif
87		196
88	#endif	197	#endif
89		198
90	#if HAVE_SENDFILE	199	#if HAVE_SENDFILE
91	# if __linux	200	# if __linux
92	# include <sys/sendfile.h>	201	# include <sys/sendfile.h>
93	# elif __freebsd	202	# elif __FreeBSD__ || defined __APPLE__
94	# include <sys/socket.h>	203	# include <sys/socket.h>
95	# include <sys/uio.h>	204	# include <sys/uio.h>
96	# elif __hpux	205	# elif __hpux
97	# include <sys/socket.h>	206	# include <sys/socket.h>
98	# elif __solaris /* not yet */	207	# elif __solaris
99	# include <sys/sendfile.h>	208	# include <sys/sendfile.h>
100	# else	209	# else
101	# error sendfile support requested but not available	210	# error sendfile support requested but not available
102	# endif	211	# endif
103	#endif	212	#endif
104		213
105	/* number of seconds after which an idle threads exit */	214	#ifndef D_TYPE
106	#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
107		223
108	/* used for struct dirent, AIX doesn't provide it */	224	/* used for struct dirent, AIX doesn't provide it */
109	#ifndef NAME_MAX	225	#ifndef NAME_MAX
110	# 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
111	#endif	232	#endif
112		233
113	/* buffer size for various temporary buffers */	234	/* buffer size for various temporary buffers */
114	#define EIO_BUFSIZE 65536	235	#define EIO_BUFSIZE 65536
115		236
…		…
122	if (!eio_buf) \	243	if (!eio_buf) \
123	return -1;	244	return -1;
124		245
125	#define EIO_TICKS ((1000000 + 1023) >> 10)	246	#define EIO_TICKS ((1000000 + 1023) >> 10)
126		247
127	/*****************************************************************************/
128
129	#if __GNUC__ >= 3
130	# define expect(expr,value) __builtin_expect ((expr),(value))
131	#else
132	# define expect(expr,value) (expr)
133	#endif
134
135	#define expect_false(expr) expect ((expr) != 0, 0)
136	#define expect_true(expr) expect ((expr) != 0, 1)
137
138	/*****************************************************************************/
139
140	#define ETP_PRI_MIN EIO_PRI_MIN	248	#define ETP_PRI_MIN EIO_PRI_MIN
141	#define ETP_PRI_MAX EIO_PRI_MAX	249	#define ETP_PRI_MAX EIO_PRI_MAX
142		250
143	struct etp_worker;	251	struct etp_worker;
144		252
…		…
152	#define ETP_WORKER_CLEAR(req) \	260	#define ETP_WORKER_CLEAR(req) \
153	if (wrk->dbuf) \	261	if (wrk->dbuf) \
154	{ \	262	{ \
155	free (wrk->dbuf); \	263	free (wrk->dbuf); \
156	wrk->dbuf = 0; \	264	wrk->dbuf = 0; \
157	} \
158	\
159	if (wrk->dirp) \
160	{ \
161	closedir (wrk->dirp); \
162	wrk->dirp = 0; \
163	}	265	}
		266
164	#define ETP_WORKER_COMMON \	267	#define ETP_WORKER_COMMON \
165	void *dbuf; \	268	void *dbuf;
166	DIR *dirp;
167		269
168	/*****************************************************************************/	270	/*****************************************************************************/
169		271
170	#define ETP_NUM_PRI (ETP_PRI_MAX - ETP_PRI_MIN + 1)	272	#define ETP_NUM_PRI (ETP_PRI_MAX - ETP_PRI_MIN + 1)
171		273
172	/* 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
173	static int tvdiff (struct timeval *tv1, struct timeval *tv2)	276	tvdiff (struct timeval *tv1, struct timeval *tv2)
174	{	277	{
175	return (tv2->tv_sec - tv1->tv_sec ) * EIO_TICKS	278	return (tv2->tv_sec - tv1->tv_sec ) * EIO_TICKS
176	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);	279	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
177	}	280	}
178		281
…		…
185	static unsigned int max_poll_reqs; /* reslock */	288	static unsigned int max_poll_reqs; /* reslock */
186		289
187	static volatile unsigned int nreqs; /* reqlock */	290	static volatile unsigned int nreqs; /* reqlock */
188	static volatile unsigned int nready; /* reqlock */	291	static volatile unsigned int nready; /* reqlock */
189	static volatile unsigned int npending; /* reqlock */	292	static volatile unsigned int npending; /* reqlock */
190	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 */
191		295
192	static mutex_t wrklock = X_MUTEX_INIT;	296	static xmutex_t wrklock;
193	static mutex_t reslock = X_MUTEX_INIT;	297	static xmutex_t reslock;
194	static mutex_t reqlock = X_MUTEX_INIT;	298	static xmutex_t reqlock;
195	static cond_t reqwait = X_COND_INIT;	299	static xcond_t reqwait;
196		300
197	#if !HAVE_PREADWRITE	301	#if !HAVE_PREADWRITE
198	/*	302	/*
199	* make our pread/pwrite emulation safe against themselves, but not against	303	* make our pread/pwrite emulation safe against themselves, but not against
200	* 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,
201	* but that's your problem, not mine.	305	* but that's your problem, not mine.
202	*/	306	*/
203	static mutex_t preadwritelock = X_MUTEX_INIT;	307	static xmutex_t preadwritelock = X_MUTEX_INIT;
204	#endif	308	#endif
205		309
206	typedef struct etp_worker	310	typedef struct etp_worker
207	{	311	{
208	/* locked by wrklock */	312	/* locked by wrklock */
209	struct etp_worker *prev, *next;	313	struct etp_worker *prev, *next;
210		314
211	thread_t tid;	315	xthread_t tid;
212		316
213	/* locked by reslock, reqlock or wrklock */	317	/* locked by reslock, reqlock or wrklock */
214	ETP_REQ *req; /* currently processed request */	318	ETP_REQ *req; /* currently processed request */
215		319
216	ETP_WORKER_COMMON	320	ETP_WORKER_COMMON
…		…
221	#define ETP_WORKER_LOCK(wrk) X_LOCK (wrklock)	325	#define ETP_WORKER_LOCK(wrk) X_LOCK (wrklock)
222	#define ETP_WORKER_UNLOCK(wrk) X_UNLOCK (wrklock)	326	#define ETP_WORKER_UNLOCK(wrk) X_UNLOCK (wrklock)
223		327
224	/* worker threads management */	328	/* worker threads management */
225		329
		330	static void ecb_cold
226	static void etp_worker_clear (etp_worker *wrk)	331	etp_worker_clear (etp_worker *wrk)
227	{	332	{
228	ETP_WORKER_CLEAR (wrk);	333	ETP_WORKER_CLEAR (wrk);
229	}	334	}
230		335
		336	static void ecb_cold
231	static void etp_worker_free (etp_worker *wrk)	337	etp_worker_free (etp_worker *wrk)
232	{	338	{
233	wrk->next->prev = wrk->prev;	339	wrk->next->prev = wrk->prev;
234	wrk->prev->next = wrk->next;	340	wrk->prev->next = wrk->next;
235		341
236	free (wrk);	342	free (wrk);
237	}	343	}
238		344
239	static unsigned int etp_nreqs (void)	345	static unsigned int
		346	etp_nreqs (void)
240	{	347	{
241	int retval;	348	int retval;
242	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);	349	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
243	retval = nreqs;	350	retval = nreqs;
244	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);	351	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
245	return retval;	352	return retval;
246	}	353	}
247		354
248	static unsigned int etp_nready (void)	355	static unsigned int
		356	etp_nready (void)
249	{	357	{
250	unsigned int retval;	358	unsigned int retval;
251		359
252	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);	360	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
253	retval = nready;	361	retval = nready;
254	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);	362	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
255		363
256	return retval;	364	return retval;
257	}	365	}
258		366
259	static unsigned int etp_npending (void)	367	static unsigned int
		368	etp_npending (void)
260	{	369	{
261	unsigned int retval;	370	unsigned int retval;
262		371
263	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);	372	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
264	retval = npending;	373	retval = npending;
265	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);	374	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
266		375
267	return retval;	376	return retval;
268	}	377	}
269		378
270	static unsigned int etp_nthreads (void)	379	static unsigned int
		380	etp_nthreads (void)
271	{	381	{
272	unsigned int retval;	382	unsigned int retval;
273		383
274	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);	384	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
275	retval = started;	385	retval = started;
…		…
289	} etp_reqq;	399	} etp_reqq;
290		400
291	static etp_reqq req_queue;	401	static etp_reqq req_queue;
292	static etp_reqq res_queue;	402	static etp_reqq res_queue;
293		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
294	static int reqq_push (etp_reqq *q, ETP_REQ *req)	416	reqq_push (etp_reqq *q, ETP_REQ *req)
295	{	417	{
296	int pri = req->pri;	418	int pri = req->pri;
297	req->next = 0;	419	req->next = 0;
298		420
299	if (q->qe[pri])	421	if (q->qe[pri])
…		…
305	q->qe[pri] = q->qs[pri] = req;	427	q->qe[pri] = q->qs[pri] = req;
306		428
307	return q->size++;	429	return q->size++;
308	}	430	}
309		431
		432	static ETP_REQ * ecb_noinline
310	static ETP_REQ *reqq_shift (etp_reqq *q)	433	reqq_shift (etp_reqq *q)
311	{	434	{
312	int pri;	435	int pri;
313		436
314	if (!q->size)	437	if (!q->size)
315	return 0;	438	return 0;
…		…
330	}	453	}
331		454
332	abort ();	455	abort ();
333	}	456	}
334		457
335	static void etp_atfork_prepare (void)	458	static void ecb_cold
		459	etp_thread_init (void)
336	{	460	{
337	X_LOCK (wrklock);
338	X_LOCK (reqlock);
339	X_LOCK (reslock);
340	#if !HAVE_PREADWRITE	461	#if !HAVE_PREADWRITE
341	X_LOCK (preadwritelock);
342	#endif
343	}
344
345	static void etp_atfork_parent (void)
346	{
347	#if !HAVE_PREADWRITE
348	X_UNLOCK (preadwritelock);	462	X_MUTEX_CREATE (preadwritelock);
349	#endif	463	#endif
350	X_UNLOCK (reslock);	464	X_MUTEX_CREATE (wrklock);
351	X_UNLOCK (reqlock);	465	X_MUTEX_CREATE (reslock);
352	X_UNLOCK (wrklock);	466	X_MUTEX_CREATE (reqlock);
		467	X_COND_CREATE (reqwait);
353	}	468	}
354		469
		470	static void ecb_cold
355	static void etp_atfork_child (void)	471	etp_atfork_child (void)
356	{	472	{
357	ETP_REQ *prv;	473	reqq_init (&req_queue);
		474	reqq_init (&res_queue);
358		475
359	while ((prv = reqq_shift (&req_queue)))	476	wrk_first.next =
360	ETP_DESTROY (prv);	477	wrk_first.prev = &wrk_first;
361
362	while ((prv = reqq_shift (&res_queue)))
363	ETP_DESTROY (prv);
364
365	while (wrk_first.next != &wrk_first)
366	{
367	etp_worker *wrk = wrk_first.next;
368
369	if (wrk->req)
370	ETP_DESTROY (wrk->req);
371
372	etp_worker_clear (wrk);
373	etp_worker_free (wrk);
374	}
375		478
376	started = 0;	479	started = 0;
377	idle = 0;	480	idle = 0;
378	nreqs = 0;	481	nreqs = 0;
379	nready = 0;	482	nready = 0;
380	npending = 0;	483	npending = 0;
381		484
382	etp_atfork_parent ();	485	etp_thread_init ();
383	}	486	}
384		487
385	static void	488	static void ecb_cold
386	etp_once_init (void)	489	etp_once_init (void)
387	{	490	{
388	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);
389	}	493	}
390		494
391	static int	495	static int ecb_cold
392	etp_init (void (*want_poll)(void), void (*done_poll)(void))	496	etp_init (void (*want_poll)(void), void (*done_poll)(void))
393	{	497	{
394	static pthread_once_t doinit = PTHREAD_ONCE_INIT;	498	static pthread_once_t doinit = PTHREAD_ONCE_INIT;
395		499
396	pthread_once (&doinit, etp_once_init);	500	pthread_once (&doinit, etp_once_init);
…		…
401	return 0;	505	return 0;
402	}	506	}
403		507
404	X_THREAD_PROC (etp_proc);	508	X_THREAD_PROC (etp_proc);
405		509
		510	static void ecb_cold
406	static void etp_start_thread (void)	511	etp_start_thread (void)
407	{	512	{
408	etp_worker *wrk = calloc (1, sizeof (etp_worker));	513	etp_worker *wrk = calloc (1, sizeof (etp_worker));
409		514
410	/*TODO*/	515	/*TODO*/
411	assert (("unable to allocate worker thread data", wrk));	516	assert (("unable to allocate worker thread data", wrk));
…		…
424	free (wrk);	529	free (wrk);
425		530
426	X_UNLOCK (wrklock);	531	X_UNLOCK (wrklock);
427	}	532	}
428		533
		534	static void
429	static void etp_maybe_start_thread (void)	535	etp_maybe_start_thread (void)
430	{	536	{
431	if (expect_true (etp_nthreads () >= wanted))	537	if (ecb_expect_true (etp_nthreads () >= wanted))
432	return;	538	return;
433		539
434	/* todo: maybe use idle here, but might be less exact */	540	/* todo: maybe use idle here, but might be less exact */
435	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 ()))
436	return;	542	return;
437		543
438	etp_start_thread ();	544	etp_start_thread ();
439	}	545	}
440		546
		547	static void ecb_cold
441	static void etp_end_thread (void)	548	etp_end_thread (void)
442	{	549	{
443	eio_req *req = calloc (1, sizeof (eio_req));	550	eio_req *req = calloc (1, sizeof (eio_req));
444		551
445	req->type = -1;	552	req->type = -1;
446	req->pri = ETP_PRI_MAX - ETP_PRI_MIN;	553	req->pri = ETP_PRI_MAX - ETP_PRI_MIN;
…		…
453	X_LOCK (wrklock);	560	X_LOCK (wrklock);
454	--started;	561	--started;
455	X_UNLOCK (wrklock);	562	X_UNLOCK (wrklock);
456	}	563	}
457		564
458	static int etp_poll (void)	565	static int
		566	etp_poll (void)
459	{	567	{
460	unsigned int maxreqs;	568	unsigned int maxreqs;
461	unsigned int maxtime;	569	unsigned int maxtime;
462	struct timeval tv_start, tv_now;	570	struct timeval tv_start, tv_now;
463		571
…		…
493		601
494	X_LOCK (reqlock);	602	X_LOCK (reqlock);
495	--nreqs;	603	--nreqs;
496	X_UNLOCK (reqlock);	604	X_UNLOCK (reqlock);
497		605
498	if (expect_false (req->type == EIO_GROUP && req->size))	606	if (ecb_expect_false (req->type == EIO_GROUP && req->size))
499	{	607	{
500	req->int1 = 1; /* mark request as delayed */	608	req->int1 = 1; /* mark request as delayed */
501	continue;	609	continue;
502	}	610	}
503	else	611	else
504	{	612	{
505	int res = ETP_FINISH (req);	613	int res = ETP_FINISH (req);
506	if (expect_false (res))	614	if (ecb_expect_false (res))
507	return res;	615	return res;
508	}	616	}
509		617
510	if (expect_false (maxreqs && !--maxreqs))	618	if (ecb_expect_false (maxreqs && !--maxreqs))
511	break;	619	break;
512		620
513	if (maxtime)	621	if (maxtime)
514	{	622	{
515	gettimeofday (&tv_now, 0);	623	gettimeofday (&tv_now, 0);
…		…
521		629
522	errno = EAGAIN;	630	errno = EAGAIN;
523	return -1;	631	return -1;
524	}	632	}
525		633
		634	static void
526	static void etp_cancel (ETP_REQ *req)	635	etp_cancel (ETP_REQ *req)
527	{	636	{
528	X_LOCK (wrklock);	637	req->cancelled = 1;
529	req->flags |= EIO_FLAG_CANCELLED;
530	X_UNLOCK (wrklock);
531		638
532	eio_grp_cancel (req);	639	eio_grp_cancel (req);
533	}	640	}
534		641
		642	static void
535	static void etp_submit (ETP_REQ *req)	643	etp_submit (ETP_REQ *req)
536	{	644	{
537	req->pri -= ETP_PRI_MIN;	645	req->pri -= ETP_PRI_MIN;
538		646
539	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;
540	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;
541		649
542	if (expect_false (req->type == EIO_GROUP))	650	if (ecb_expect_false (req->type == EIO_GROUP))
543	{	651	{
544	/* I hope this is worth it :/ */	652	/* I hope this is worth it :/ */
545	X_LOCK (reqlock);	653	X_LOCK (reqlock);
546	++nreqs;	654	++nreqs;
547	X_UNLOCK (reqlock);	655	X_UNLOCK (reqlock);
…		…
566		674
567	etp_maybe_start_thread ();	675	etp_maybe_start_thread ();
568	}	676	}
569	}	677	}
570		678
		679	static void ecb_cold
571	static void etp_set_max_poll_time (double nseconds)	680	etp_set_max_poll_time (double nseconds)
572	{	681	{
573	if (WORDACCESS_UNSAFE) X_LOCK (reslock);	682	if (WORDACCESS_UNSAFE) X_LOCK (reslock);
574	max_poll_time = nseconds;	683	max_poll_time = nseconds * EIO_TICKS;
575	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);	684	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);
576	}	685	}
577		686
		687	static void ecb_cold
578	static void etp_set_max_poll_reqs (unsigned int maxreqs)	688	etp_set_max_poll_reqs (unsigned int maxreqs)
579	{	689	{
580	if (WORDACCESS_UNSAFE) X_LOCK (reslock);	690	if (WORDACCESS_UNSAFE) X_LOCK (reslock);
581	max_poll_reqs = maxreqs;	691	max_poll_reqs = maxreqs;
582	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);	692	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);
583	}	693	}
584		694
		695	static void ecb_cold
585	static void etp_set_max_idle (unsigned int nthreads)	696	etp_set_max_idle (unsigned int nthreads)
586	{	697	{
587	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);	698	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
588	max_idle = nthreads <= 0 ? 1 : nthreads;	699	max_idle = nthreads;
589	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);	700	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
590	}	701	}
591		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
592	static void etp_set_min_parallel (unsigned int nthreads)	712	etp_set_min_parallel (unsigned int nthreads)
593	{	713	{
594	if (wanted < nthreads)	714	if (wanted < nthreads)
595	wanted = nthreads;	715	wanted = nthreads;
596	}	716	}
597		717
		718	static void ecb_cold
598	static void etp_set_max_parallel (unsigned int nthreads)	719	etp_set_max_parallel (unsigned int nthreads)
599	{	720	{
600	if (wanted > nthreads)	721	if (wanted > nthreads)
601	wanted = nthreads;	722	wanted = nthreads;
602		723
603	while (started > wanted)	724	while (started > wanted)
604	etp_end_thread ();	725	etp_end_thread ();
605	}	726	}
606		727
607	/*****************************************************************************/	728	/*****************************************************************************/
608		729
		730	static void
609	static void grp_try_feed (eio_req *grp)	731	grp_try_feed (eio_req *grp)
610	{	732	{
611	while (grp->size < grp->int2 && !EIO_CANCELLED (grp))	733	while (grp->size < grp->int2 && !EIO_CANCELLED (grp))
612	{	734	{
613	grp->flags &= ~EIO_FLAG_GROUPADD;	735	grp->flags &= ~EIO_FLAG_GROUPADD;
614		736
…		…
621	break;	743	break;
622	}	744	}
623	}	745	}
624	}	746	}
625		747
		748	static int
626	static int grp_dec (eio_req *grp)	749	grp_dec (eio_req *grp)
627	{	750	{
628	--grp->size;	751	--grp->size;
629		752
630	/* call feeder, if applicable */	753	/* call feeder, if applicable */
631	grp_try_feed (grp);	754	grp_try_feed (grp);
…		…
635	return eio_finish (grp);	758	return eio_finish (grp);
636	else	759	else
637	return 0;	760	return 0;
638	}	761	}
639		762
		763	static void
640	void eio_destroy (eio_req *req)	764	eio_destroy (eio_req *req)
641	{	765	{
642	if ((req)->flags & EIO_FLAG_PTR1_FREE) free (req->ptr1);	766	if ((req)->flags & EIO_FLAG_PTR1_FREE) free (req->ptr1);
643	if ((req)->flags & EIO_FLAG_PTR2_FREE) free (req->ptr2);	767	if ((req)->flags & EIO_FLAG_PTR2_FREE) free (req->ptr2);
644		768
645	EIO_DESTROY (req);	769	EIO_DESTROY (req);
646	}	770	}
647		771
		772	static int
648	static int eio_finish (eio_req *req)	773	eio_finish (eio_req *req)
649	{	774	{
650	int res = EIO_FINISH (req);	775	int res = EIO_FINISH (req);
651		776
652	if (req->grp)	777	if (req->grp)
653	{	778	{
…		…
661	if (grp->grp_first == req)	786	if (grp->grp_first == req)
662	grp->grp_first = req->grp_next;	787	grp->grp_first = req->grp_next;
663		788
664	res2 = grp_dec (grp);	789	res2 = grp_dec (grp);
665		790
666	if (!res && res2)	791	if (!res)
667	res = res2;	792	res = res2;
668	}	793	}
669		794
670	eio_destroy (req);	795	eio_destroy (req);
671		796
672	return res;	797	return res;
673	}	798	}
674		799
		800	void
675	void eio_grp_cancel (eio_req *grp)	801	eio_grp_cancel (eio_req *grp)
676	{	802	{
677	for (grp = grp->grp_first; grp; grp = grp->grp_next)	803	for (grp = grp->grp_first; grp; grp = grp->grp_next)
678	eio_cancel (grp);	804	eio_cancel (grp);
679	}	805	}
680		806
		807	void
681	void eio_cancel (eio_req *req)	808	eio_cancel (eio_req *req)
682	{	809	{
683	etp_cancel (req);	810	etp_cancel (req);
684	}	811	}
685		812
		813	void
686	void eio_submit (eio_req *req)	814	eio_submit (eio_req *req)
687	{	815	{
688	etp_submit (req);	816	etp_submit (req);
689	}	817	}
690		818
691	unsigned int eio_nreqs (void)	819	unsigned int
		820	eio_nreqs (void)
692	{	821	{
693	return etp_nreqs ();	822	return etp_nreqs ();
694	}	823	}
695		824
696	unsigned int eio_nready (void)	825	unsigned int
		826	eio_nready (void)
697	{	827	{
698	return etp_nready ();	828	return etp_nready ();
699	}	829	}
700		830
701	unsigned int eio_npending (void)	831	unsigned int
		832	eio_npending (void)
702	{	833	{
703	return etp_npending ();	834	return etp_npending ();
704	}	835	}
705		836
706	unsigned int eio_nthreads (void)	837	unsigned int ecb_cold
		838	eio_nthreads (void)
707	{	839	{
708	return etp_nthreads ();	840	return etp_nthreads ();
709	}	841	}
710		842
		843	void ecb_cold
711	void eio_set_max_poll_time (double nseconds)	844	eio_set_max_poll_time (double nseconds)
712	{	845	{
713	etp_set_max_poll_time (nseconds);	846	etp_set_max_poll_time (nseconds);
714	}	847	}
715		848
		849	void ecb_cold
716	void eio_set_max_poll_reqs (unsigned int maxreqs)	850	eio_set_max_poll_reqs (unsigned int maxreqs)
717	{	851	{
718	etp_set_max_poll_reqs (maxreqs);	852	etp_set_max_poll_reqs (maxreqs);
719	}	853	}
720		854
		855	void ecb_cold
721	void eio_set_max_idle (unsigned int nthreads)	856	eio_set_max_idle (unsigned int nthreads)
722	{	857	{
723	etp_set_max_idle (nthreads);	858	etp_set_max_idle (nthreads);
724	}	859	}
725		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
726	void eio_set_min_parallel (unsigned int nthreads)	868	eio_set_min_parallel (unsigned int nthreads)
727	{	869	{
728	etp_set_min_parallel (nthreads);	870	etp_set_min_parallel (nthreads);
729	}	871	}
730		872
		873	void ecb_cold
731	void eio_set_max_parallel (unsigned int nthreads)	874	eio_set_max_parallel (unsigned int nthreads)
732	{	875	{
733	etp_set_max_parallel (nthreads);	876	etp_set_max_parallel (nthreads);
734	}	877	}
735		878
736	int eio_poll (void)	879	int eio_poll (void)
…		…
745	# undef pread	888	# undef pread
746	# undef pwrite	889	# undef pwrite
747	# define pread eio__pread	890	# define pread eio__pread
748	# define pwrite eio__pwrite	891	# define pwrite eio__pwrite
749		892
750	static ssize_t	893	static eio_ssize_t
751	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)
752	{	895	{
753	ssize_t res;	896	eio_ssize_t res;
754	off_t ooffset;	897	off_t ooffset;
755		898
756	X_LOCK (preadwritelock);	899	X_LOCK (preadwritelock);
757	ooffset = lseek (fd, 0, SEEK_CUR);	900	ooffset = lseek (fd, 0, SEEK_CUR);
758	lseek (fd, offset, SEEK_SET);	901	lseek (fd, offset, SEEK_SET);
…		…
761	X_UNLOCK (preadwritelock);	904	X_UNLOCK (preadwritelock);
762		905
763	return res;	906	return res;
764	}	907	}
765		908
766	static ssize_t	909	static eio_ssize_t
767	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)
768	{	911	{
769	ssize_t res;	912	eio_ssize_t res;
770	off_t ooffset;	913	off_t ooffset;
771		914
772	X_LOCK (preadwritelock);	915	X_LOCK (preadwritelock);
773	ooffset = lseek (fd, 0, SEEK_CUR);	916	ooffset = lseek (fd, 0, SEEK_CUR);
774	lseek (fd, offset, SEEK_SET);	917	lseek (fd, offset, SEEK_SET);
…		…
778		921
779	return res;	922	return res;
780	}	923	}
781	#endif	924	#endif
782		925
783	#ifndef HAVE_FUTIMES	926	#ifndef HAVE_UTIMES
784		927
785	# undef utimes	928	# undef utimes
786	# undef futimes
787	# define utimes(path,times) eio__utimes (path, times)	929	# define utimes(path,times) eio__utimes (path, times)
788	# define futimes(fd,times) eio__futimes (fd, times)
789		930
790	static int	931	static int
791	eio__utimes (const char *filename, const struct timeval times[2])	932	eio__utimes (const char *filename, const struct timeval times[2])
792	{	933	{
793	if (times)	934	if (times)
…		…
801	}	942	}
802	else	943	else
803	return utime (filename, 0);	944	return utime (filename, 0);
804	}	945	}
805		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
806	static int eio__futimes (int fd, const struct timeval tv[2])	955	eio__futimes (int fd, const struct timeval tv[2])
807	{	956	{
808	errno = ENOSYS;	957	errno = ENOSYS;
809	return -1;	958	return -1;
810	}	959	}
811		960
…		…
815	# undef fdatasync	964	# undef fdatasync
816	# define fdatasync(fd) fsync (fd)	965	# define fdatasync(fd) fsync (fd)
817	#endif	966	#endif
818		967
819	/* sync_file_range always needs emulation */	968	/* sync_file_range always needs emulation */
820	int	969	static int
821	eio__sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags)	970	eio__sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags)
822	{	971	{
823	#if HAVE_SYNC_FILE_RANGE	972	#if HAVE_SYNC_FILE_RANGE
824	int res;	973	int res;
825		974
…		…
838	if (!res || errno != ENOSYS)	987	if (!res || errno != ENOSYS)
839	return res;	988	return res;
840	#endif	989	#endif
841		990
842	/* even though we could play tricks with the flags, it's better to always	991	/* even though we could play tricks with the flags, it's better to always
843	* call fdatasync, as thta matches the expectation of it's users best */	992	* call fdatasync, as that matches the expectation of its users best */
844	return fdatasync (fd);	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
845	}	1005	}
846		1006
847	#if !HAVE_READAHEAD	1007	#if !HAVE_READAHEAD
848	# undef readahead	1008	# undef readahead
849	# define readahead(fd,offset,count) eio__readahead (fd, offset, count, self)	1009	# define readahead(fd,offset,count) eio__readahead (fd, offset, count, self)
850		1010
851	static ssize_t	1011	static eio_ssize_t
852	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)
853	{	1013	{
854	size_t todo = count;	1014	size_t todo = count;
855	dBUF;	1015	dBUF;
856		1016
…		…
868	}	1028	}
869		1029
870	#endif	1030	#endif
871		1031
872	/* sendfile always needs emulation */	1032	/* sendfile always needs emulation */
873	static ssize_t	1033	static eio_ssize_t
874	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)
875	{	1035	{
		1036	eio_ssize_t written = 0;
876	ssize_t res;	1037	eio_ssize_t res;
877		1038
878	if (!count)	1039	if (!count)
879	return 0;	1040	return 0;
880		1041
		1042	for (;;)
		1043	{
		1044	#ifdef __APPLE__
		1045	# undef HAVE_SENDFILE /* broken, as everything on os x */
		1046	#endif
881	#if HAVE_SENDFILE	1047	#if HAVE_SENDFILE
882	# if __linux	1048	# if __linux
		1049	off_t soffset = offset;
883	res = sendfile (ofd, ifd, &offset, count);	1050	res = sendfile (ofd, ifd, &soffset, count);
884		1051
885	# elif __freebsd	1052	# elif __FreeBSD__
886	/*	1053	/*
887	* 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
888	* wasted on making it similar to other I/O functions.	1055	* wasted on making it similar to other I/O functions.
889	*/	1056	*/
890	{
891	off_t sbytes;	1057	off_t sbytes;
892	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);	1058	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
893		1059
894	if (res < 0 && sbytes)	1060	#if 0 /* according to the manpage, this is correct, but broken behaviour */
895	/* 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)
896	res = sbytes;	1065	res = sbytes;
897	}	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;
898		1079
899	# elif __hpux	1080	# elif __hpux
900	res = sendfile (ofd, ifd, offset, count, 0, 0);	1081	res = sendfile (ofd, ifd, offset, count, 0, 0);
901		1082
902	# elif __solaris	1083	# elif __solaris
903	{
904	struct sendfilevec vec;	1084	struct sendfilevec vec;
905	size_t sbytes;	1085	size_t sbytes;
906		1086
907	vec.sfv_fd = ifd;	1087	vec.sfv_fd = ifd;
908	vec.sfv_flag = 0;	1088	vec.sfv_flag = 0;
909	vec.sfv_off = offset;	1089	vec.sfv_off = offset;
910	vec.sfv_len = count;	1090	vec.sfv_len = count;
911		1091
912	res = sendfilev (ofd, &vec, 1, &sbytes);	1092	res = sendfilev (ofd, &vec, 1, &sbytes);
913		1093
914	if (res < 0 && sbytes)	1094	if (res < 0 && sbytes)
915	res = sbytes;	1095	res = sbytes;
916	}
917		1096
918	# 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
919	#else	1108	#else
920	res = -1;	1109	res = -1;
921	errno = ENOSYS;	1110	errno = ENOSYS;
922	#endif	1111	#endif
923		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
924	if (res < 0	1136	if (res < 0
925	&& (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
926	#if __solaris	1145	#if __solaris
927	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE	1146	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
928	#endif	1147	#endif
929	)	1148	)
930	)	1149	)
…		…
934		1153
935	res = 0;	1154	res = 0;
936		1155
937	while (count)	1156	while (count)
938	{	1157	{
939	ssize_t cnt;	1158	eio_ssize_t cnt;
940		1159
941	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);
942		1161
943	if (cnt <= 0)	1162	if (cnt <= 0)
944	{	1163	{
…		…
961	}	1180	}
962		1181
963	return res;	1182	return res;
964	}	1183	}
965		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
966	/* read a full directory */	1629	/* read a full directory */
967	static void	1630	static void
968	eio__scandir (eio_req *req, etp_worker *self)	1631	eio__scandir (eio_req *req, etp_worker *self)
969	{	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
970	DIR *dirp;	1645	DIR *dirp;
971	EIO_STRUCT_DIRENT *entp;	1646	EIO_STRUCT_DIRENT *entp;
972	char *name, *names;	1647	#endif
973	int memlen = 4096;
974	int memofs = 0;
975	int res = 0;
976		1648
977	X_LOCK (wrklock);	1649	req->result = -1;
978	/* 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	char *path = malloc (MAX_PATH);
		1657	_snprintf (path, MAX_PATH, "%s/*", (const char *)req->ptr1);
		1658	dirp = FindFirstFile (path, &entp);
		1659	free (path);
		1660
		1661	if (!dirp)
		1662	{
		1663	switch (GetLastError ())
		1664	{
		1665	case ERROR_FILE_NOT_FOUND:
		1666	req->result = 0;
		1667	break;
		1668
		1669	case ERROR_PATH_NOT_FOUND:
		1670	case ERROR_NO_MORE_FILES:
		1671	errno = ENOENT;
		1672	break;
		1673
		1674	case ERROR_NOT_ENOUGH_MEMORY:
		1675	errno = ENOMEM;
		1676	break;
		1677
		1678	default:
		1679	errno = EINVAL;
		1680	break;
		1681	}
		1682
		1683	}
		1684	}
		1685	#else
979	self->dirp = dirp = opendir (req->ptr1);	1686	dirp = opendir (req->ptr1);
		1687	#endif
		1688
980	req->flags |= EIO_FLAG_PTR2_FREE;	1689	if (req->flags & EIO_FLAG_PTR1_FREE)
		1690	free (req->ptr1);
		1691
		1692	req->flags |= EIO_FLAG_PTR1_FREE | EIO_FLAG_PTR2_FREE;
		1693	req->ptr1 = dents = flags ? malloc (dentalloc * sizeof (eio_dirent)) : 0;
981	req->ptr2 = names = malloc (memlen);	1694	req->ptr2 = names = malloc (namesalloc);
982	X_UNLOCK (wrklock);
983		1695
984	if (dirp && names)	1696	if (dirp && names && (!flags || dents))
985	for (;;)	1697	for (;;)
986	{	1698	{
		1699	int more;
		1700
		1701	#ifdef _WIN32
		1702	more = dirp;
		1703	#else
987	errno = 0;	1704	errno = 0;
988	entp = readdir (dirp);	1705	entp = readdir (dirp);
		1706	more = entp;
		1707	#endif
989		1708
990	if (!entp)	1709	if (!more)
		1710	{
		1711	#ifndef _WIN32
		1712	int old_errno = errno;
		1713	closedir (dirp);
		1714	errno = old_errno;
		1715
		1716	if (errno)
		1717	break;
		1718	#endif
		1719
		1720	/* sort etc. */
		1721	req->int1 = flags;
		1722	req->result = dentoffs;
		1723
		1724	if (flags & EIO_READDIR_STAT_ORDER)
		1725	eio_dent_sort (dents, dentoffs, flags & EIO_READDIR_DIRS_FIRST ? 7 : 0, inode_bits);
		1726	else if (flags & EIO_READDIR_DIRS_FIRST)
		1727	if (flags & EIO_READDIR_FOUND_UNKNOWN)
		1728	eio_dent_sort (dents, dentoffs, 7, inode_bits); /* sort by score and inode */
		1729	else
		1730	{
		1731	/* in this case, all is known, and we just put dirs first and sort them */
		1732	eio_dirent *oth = dents + dentoffs;
		1733	eio_dirent *dir = dents;
		1734
		1735	/* now partition dirs to the front, and non-dirs to the back */
		1736	/* by walking from both sides and swapping if necessary */
		1737	while (oth > dir)
		1738	{
		1739	if (dir->type == EIO_DT_DIR)
		1740	++dir;
		1741	else if ((--oth)->type == EIO_DT_DIR)
		1742	{
		1743	eio_dirent tmp = *dir; *dir = *oth; *oth = tmp;
		1744
		1745	++dir;
		1746	}
		1747	}
		1748
		1749	/* now sort the dirs only (dirs all have the same score) */
		1750	eio_dent_sort (dents, dir - dents, 0, inode_bits);
		1751	}
		1752
991	break;	1753	break;
		1754	}
992		1755
993	name = entp->d_name;	1756	/* now add the entry to our list(s) */
		1757	name = D_NAME (entp);
994		1758
		1759	/* skip . and .. entries */
995	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))	1760	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
996	{	1761	{
997	int len = strlen (name) + 1;	1762	int len = D_NAMLEN (entp) + 1;
998		1763
999	res++;	1764	while (ecb_expect_false (namesoffs + len > namesalloc))
1000
1001	while (memofs + len > memlen)
1002	{	1765	{
1003	memlen *= 2;	1766	namesalloc *= 2;
1004	X_LOCK (wrklock);
1005	req->ptr2 = names = realloc (names, memlen);	1767	req->ptr2 = names = realloc (names, namesalloc);
1006	X_UNLOCK (wrklock);
1007		1768
1008	if (!names)	1769	if (!names)
1009	break;	1770	break;
1010	}	1771	}
1011		1772
1012	memcpy (names + memofs, name, len);	1773	memcpy (names + namesoffs, name, len);
		1774
		1775	if (dents)
		1776	{
		1777	struct eio_dirent *ent;
		1778
		1779	if (ecb_expect_false (dentoffs == dentalloc))
		1780	{
		1781	dentalloc *= 2;
		1782	req->ptr1 = dents = realloc (dents, dentalloc * sizeof (eio_dirent));
		1783
		1784	if (!dents)
		1785	break;
		1786	}
		1787
		1788	ent = dents + dentoffs;
		1789
		1790	ent->nameofs = namesoffs; /* rather dirtily we store the offset in the pointer */
		1791	ent->namelen = len - 1;
		1792	ent->inode = D_INO (entp);
		1793
		1794	inode_bits |= ent->inode;
		1795
		1796	switch (D_TYPE (entp))
		1797	{
		1798	default:
		1799	ent->type = EIO_DT_UNKNOWN;
		1800	flags |= EIO_READDIR_FOUND_UNKNOWN;
		1801	break;
		1802
		1803	#ifdef DT_FIFO
		1804	case DT_FIFO: ent->type = EIO_DT_FIFO; break;
		1805	#endif
		1806	#ifdef DT_CHR
		1807	case DT_CHR: ent->type = EIO_DT_CHR; break;
		1808	#endif
		1809	#ifdef DT_MPC
		1810	case DT_MPC: ent->type = EIO_DT_MPC; break;
		1811	#endif
		1812	#ifdef DT_DIR
		1813	case DT_DIR: ent->type = EIO_DT_DIR; break;
		1814	#endif
		1815	#ifdef DT_NAM
		1816	case DT_NAM: ent->type = EIO_DT_NAM; break;
		1817	#endif
		1818	#ifdef DT_BLK
		1819	case DT_BLK: ent->type = EIO_DT_BLK; break;
		1820	#endif
		1821	#ifdef DT_MPB
		1822	case DT_MPB: ent->type = EIO_DT_MPB; break;
		1823	#endif
		1824	#ifdef DT_REG
		1825	case DT_REG: ent->type = EIO_DT_REG; break;
		1826	#endif
		1827	#ifdef DT_NWK
		1828	case DT_NWK: ent->type = EIO_DT_NWK; break;
		1829	#endif
		1830	#ifdef DT_CMP
		1831	case DT_CMP: ent->type = EIO_DT_CMP; break;
		1832	#endif
		1833	#ifdef DT_LNK
		1834	case DT_LNK: ent->type = EIO_DT_LNK; break;
		1835	#endif
		1836	#ifdef DT_SOCK
		1837	case DT_SOCK: ent->type = EIO_DT_SOCK; break;
		1838	#endif
		1839	#ifdef DT_DOOR
		1840	case DT_DOOR: ent->type = EIO_DT_DOOR; break;
		1841	#endif
		1842	#ifdef DT_WHT
		1843	case DT_WHT: ent->type = EIO_DT_WHT; break;
		1844	#endif
		1845	}
		1846
		1847	ent->score = 7;
		1848
		1849	if (flags & EIO_READDIR_DIRS_FIRST)
		1850	{
		1851	if (ent->type == EIO_DT_UNKNOWN)
		1852	{
		1853	if (*name == '.') /* leading dots are likely directories, and, in any case, rare */
		1854	ent->score = 1;
		1855	else if (!strchr (name, '.')) /* absense of dots indicate likely dirs */
		1856	ent->score = len <= 2 ? 4 - len : len <= 4 ? 4 : len <= 7 ? 5 : 6; /* shorter == more likely dir, but avoid too many classes */
		1857	}
		1858	else if (ent->type == EIO_DT_DIR)
		1859	ent->score = 0;
		1860	}
		1861	}
		1862
1013	memofs += len;	1863	namesoffs += len;
		1864	++dentoffs;
1014	}	1865	}
		1866
		1867	if (EIO_CANCELLED (req))
		1868	{
		1869	errno = ECANCELED;
		1870	break;
		1871	}
		1872
		1873	#ifdef _WIN32
		1874	if (!FindNextFile (dirp, &entp))
		1875	{
		1876	FindClose (dirp);
		1877	dirp = 0;
		1878	}
		1879	#endif
1015	}	1880	}
1016
1017	if (errno)
1018	res = -1;
1019
1020	req->result = res;
1021	}
1022
1023	#if !(_POSIX_MAPPED_FILES && _POSIX_SYNCHRONIZED_IO)
1024	# undef msync
1025	# define msync(a,b,c) ((errno = ENOSYS), -1)
1026	#endif
1027
1028	int
1029	eio__mtouch (void *mem, size_t len, int flags)
1030	{
1031	intptr_t addr = (intptr_t)mem;
1032	intptr_t end = addr + len;
1033	#ifdef PAGESIZE
1034	const intptr_t page = PAGESIZE;
1035	#else
1036	static intptr_t page;
1037
1038	if (!page)
1039	page = sysconf (_SC_PAGESIZE);
1040	#endif
1041
1042	addr &= ~(page - 1); /* assume page size is always a power of two */
1043
1044	if (addr < end)
1045	if (flags) /* modify */
1046	do { *((volatile sig_atomic_t *)addr) |= 0; } while ((addr += page) < len);
1047	else
1048	do { *((volatile sig_atomic_t *)addr) ; } while ((addr += page) < len);
1049
1050	return 0;
1051	}	1881	}
1052		1882
1053	/*****************************************************************************/	1883	/*****************************************************************************/
1054		1884
1055	#define ALLOC(len) \	1885	#define ALLOC(len) \
…		…
1071	{	1901	{
1072	ETP_REQ *req;	1902	ETP_REQ *req;
1073	struct timespec ts;	1903	struct timespec ts;
1074	etp_worker *self = (etp_worker *)thr_arg;	1904	etp_worker *self = (etp_worker *)thr_arg;
1075		1905
1076	/* try to distribute timeouts somewhat randomly */	1906	/* try to distribute timeouts somewhat evenly */
1077	ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL);	1907	ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL);
1078		1908
1079	for (;;)	1909	for (;;)
1080	{	1910	{
		1911	ts.tv_sec = 0;
		1912
1081	X_LOCK (reqlock);	1913	X_LOCK (reqlock);
1082		1914
1083	for (;;)	1915	for (;;)
1084	{	1916	{
1085	self->req = req = reqq_shift (&req_queue);	1917	self->req = req = reqq_shift (&req_queue);
1086		1918
1087	if (req)	1919	if (req)
1088	break;	1920	break;
1089		1921
		1922	if (ts.tv_sec == 1) /* no request, but timeout detected, let's quit */
		1923	{
		1924	X_UNLOCK (reqlock);
		1925	X_LOCK (wrklock);
		1926	--started;
		1927	X_UNLOCK (wrklock);
		1928	goto quit;
		1929	}
		1930
1090	++idle;	1931	++idle;
1091		1932
1092	ts.tv_sec = time (0) + IDLE_TIMEOUT;	1933	if (idle <= max_idle)
1093	if (X_COND_TIMEDWAIT (reqwait, reqlock, ts) == ETIMEDOUT)	1934	/* we are allowed to idle, so do so without any timeout */
		1935	X_COND_WAIT (reqwait, reqlock);
		1936	else
1094	{	1937	{
1095	if (idle > max_idle)	1938	/* initialise timeout once */
1096	{	1939	if (!ts.tv_sec)
1097	--idle;	1940	ts.tv_sec = time (0) + idle_timeout;
1098	X_UNLOCK (reqlock);
1099	X_LOCK (wrklock);
1100	--started;
1101	X_UNLOCK (wrklock);
1102	goto quit;
1103	}
1104		1941
1105	/* we are allowed to idle, so do so without any timeout */
1106	X_COND_WAIT (reqwait, reqlock);	1942	if (X_COND_TIMEDWAIT (reqwait, reqlock, ts) == ETIMEDOUT)
		1943	ts.tv_sec = 1; /* assuming this is not a value computed above.,.. */
1107	}	1944	}
1108		1945
1109	--idle;	1946	--idle;
1110	}	1947	}
1111		1948
…		…
1114	X_UNLOCK (reqlock);	1951	X_UNLOCK (reqlock);
1115		1952
1116	if (req->type < 0)	1953	if (req->type < 0)
1117	goto quit;	1954	goto quit;
1118		1955
1119	if (!EIO_CANCELLED (req))
1120	ETP_EXECUTE (self, req);	1956	ETP_EXECUTE (self, req);
1121		1957
1122	X_LOCK (reslock);	1958	X_LOCK (reslock);
1123		1959
1124	++npending;	1960	++npending;
1125		1961
…		…
1140	return 0;	1976	return 0;
1141	}	1977	}
1142		1978
1143	/*****************************************************************************/	1979	/*****************************************************************************/
1144		1980
		1981	int ecb_cold
1145	int eio_init (void (*want_poll)(void), void (*done_poll)(void))	1982	eio_init (void (*want_poll)(void), void (*done_poll)(void))
1146	{	1983	{
1147	return etp_init (want_poll, done_poll);	1984	return etp_init (want_poll, done_poll);
1148	}	1985	}
1149		1986
		1987	ecb_inline void
1150	static void eio_api_destroy (eio_req *req)	1988	eio_api_destroy (eio_req *req)
1151	{	1989	{
1152	free (req);	1990	free (req);
1153	}	1991	}
1154		1992
1155	#define REQ(rtype) \	1993	#define REQ(rtype) \
…		…
1174	{ \	2012	{ \
1175	eio_api_destroy (req); \	2013	eio_api_destroy (req); \
1176	return 0; \	2014	return 0; \
1177	}	2015	}
1178		2016
		2017	static void
1179	static void eio_execute (etp_worker *self, eio_req *req)	2018	eio_execute (etp_worker *self, eio_req *req)
1180	{	2019	{
1181	errno = 0;	2020	if (ecb_expect_false (EIO_CANCELLED (req)))
		2021	{
		2022	req->result = -1;
		2023	req->errorno = ECANCELED;
		2024	return;
		2025	}
1182		2026
1183	switch (req->type)	2027	switch (req->type)
1184	{	2028	{
1185	case EIO_READ: ALLOC (req->size);	2029	case EIO_READ: ALLOC (req->size);
1186	req->result = req->offs >= 0	2030	req->result = req->offs >= 0
…		…
1198	case EIO_LSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));	2042	case EIO_LSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));
1199	req->result = lstat (req->ptr1, (EIO_STRUCT_STAT *)req->ptr2); break;	2043	req->result = lstat (req->ptr1, (EIO_STRUCT_STAT *)req->ptr2); break;
1200	case EIO_FSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));	2044	case EIO_FSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));
1201	req->result = fstat (req->int1, (EIO_STRUCT_STAT *)req->ptr2); break;	2045	req->result = fstat (req->int1, (EIO_STRUCT_STAT *)req->ptr2); break;
1202		2046
		2047	case EIO_STATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS));
		2048	req->result = statvfs (req->ptr1, (EIO_STRUCT_STATVFS *)req->ptr2); break;
		2049	case EIO_FSTATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS));
		2050	req->result = fstatvfs (req->int1, (EIO_STRUCT_STATVFS *)req->ptr2); break;
		2051
1203	case EIO_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break;	2052	case EIO_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break;
1204	case EIO_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;	2053	case EIO_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
1205	case EIO_CHMOD: req->result = chmod (req->ptr1, (mode_t)req->int2); break;	2054	case EIO_CHMOD: req->result = chmod (req->ptr1, (mode_t)req->int2); break;
1206	case EIO_FCHMOD: req->result = fchmod (req->int1, (mode_t)req->int2); break;	2055	case EIO_FCHMOD: req->result = fchmod (req->int1, (mode_t)req->int2); break;
1207	case EIO_TRUNCATE: req->result = truncate (req->ptr1, req->offs); break;	2056	case EIO_TRUNCATE: req->result = truncate (req->ptr1, req->offs); break;
…		…
1214	case EIO_RMDIR: req->result = rmdir (req->ptr1); break;	2063	case EIO_RMDIR: req->result = rmdir (req->ptr1); break;
1215	case EIO_MKDIR: req->result = mkdir (req->ptr1, (mode_t)req->int2); break;	2064	case EIO_MKDIR: req->result = mkdir (req->ptr1, (mode_t)req->int2); break;
1216	case EIO_RENAME: req->result = rename (req->ptr1, req->ptr2); break;	2065	case EIO_RENAME: req->result = rename (req->ptr1, req->ptr2); break;
1217	case EIO_LINK: req->result = link (req->ptr1, req->ptr2); break;	2066	case EIO_LINK: req->result = link (req->ptr1, req->ptr2); break;
1218	case EIO_SYMLINK: req->result = symlink (req->ptr1, req->ptr2); break;	2067	case EIO_SYMLINK: req->result = symlink (req->ptr1, req->ptr2); break;
1219	case EIO_MKNOD: req->result = mknod (req->ptr1, (mode_t)req->int2, (dev_t)req->int3); break;	2068	case EIO_MKNOD: req->result = mknod (req->ptr1, (mode_t)req->int2, (dev_t)req->offs); break;
1220		2069
		2070	case EIO_REALPATH: eio__realpath (req, self); break;
		2071
1221	case EIO_READLINK: ALLOC (NAME_MAX);	2072	case EIO_READLINK: ALLOC (PATH_MAX);
1222	req->result = readlink (req->ptr1, req->ptr2, NAME_MAX); break;	2073	req->result = readlink (req->ptr1, req->ptr2, PATH_MAX); break;
1223		2074
1224	case EIO_SYNC: req->result = 0; sync (); break;	2075	case EIO_SYNC: req->result = 0; sync (); break;
1225	case EIO_FSYNC: req->result = fsync (req->int1); break;	2076	case EIO_FSYNC: req->result = fsync (req->int1); break;
1226	case EIO_FDATASYNC: req->result = fdatasync (req->int1); break;	2077	case EIO_FDATASYNC: req->result = fdatasync (req->int1); break;
1227	case EIO_MSYNC: req->result = msync (req->ptr2, req->size, req->int1); break;	2078	case EIO_MSYNC: req->result = eio__msync (req->ptr2, req->size, req->int1); break;
		2079	case EIO_MTOUCH: req->result = eio__mtouch (req); break;
1228	case EIO_MTOUCH: req->result = eio__mtouch (req->ptr2, req->size, req->int1); break;	2080	case EIO_MLOCK: req->result = eio__mlock (req->ptr2, req->size); break;
		2081	case EIO_MLOCKALL: req->result = eio__mlockall (req->int1); break;
1229	case EIO_SYNC_FILE_RANGE: req->result = eio__sync_file_range (req->int1, req->offs, req->size, req->int2); break;	2082	case EIO_SYNC_FILE_RANGE: req->result = eio__sync_file_range (req->int1, req->offs, req->size, req->int2); break;
		2083	case EIO_FALLOCATE: req->result = eio__fallocate (req->int1, req->int2, req->offs, req->size); break;
1230		2084
1231	case EIO_READDIR: eio__scandir (req, self); break;	2085	case EIO_READDIR: eio__scandir (req, self); break;
1232		2086
1233	case EIO_BUSY:	2087	case EIO_BUSY:
1234	#ifdef _WIN32	2088	#ifdef _WIN32
1235	Sleep (req->nv1 * 1000.);	2089	Sleep (req->nv1 * 1e3);
1236	#else	2090	#else
1237	{	2091	{
1238	struct timeval tv;	2092	struct timeval tv;
1239		2093
1240	tv.tv_sec = req->nv1;	2094	tv.tv_sec = req->nv1;
1241	tv.tv_usec = (req->nv1 - tv.tv_sec) * 1000000.;	2095	tv.tv_usec = (req->nv1 - tv.tv_sec) * 1e6;
1242		2096
1243	req->result = select (0, 0, 0, 0, &tv);	2097	req->result = select (0, 0, 0, 0, &tv);
1244	}	2098	}
1245	#endif	2099	#endif
1246	break;	2100	break;
…		…
1261	times = tv;	2115	times = tv;
1262	}	2116	}
1263	else	2117	else
1264	times = 0;	2118	times = 0;
1265		2119
1266
1267	req->result = req->type == EIO_FUTIME	2120	req->result = req->type == EIO_FUTIME
1268	? futimes (req->int1, times)	2121	? futimes (req->int1, times)
1269	: utimes (req->ptr1, times);	2122	: utimes (req->ptr1, times);
1270	}	2123	}
1271	break;	2124	break;
…		…
1276	case EIO_NOP:	2129	case EIO_NOP:
1277	req->result = 0;	2130	req->result = 0;
1278	break;	2131	break;
1279		2132
1280	case EIO_CUSTOM:	2133	case EIO_CUSTOM:
1281	((void (*)(eio_req *))req->feed) (req);	2134	req->feed (req);
1282	break;	2135	break;
1283		2136
1284	default:	2137	default:
		2138	errno = ENOSYS;
1285	req->result = -1;	2139	req->result = -1;
1286	break;	2140	break;
1287	}	2141	}
1288		2142
1289	req->errorno = errno;	2143	req->errorno = errno;
…		…
1319	eio_req *eio_mtouch (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data)	2173	eio_req *eio_mtouch (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data)
1320	{	2174	{
1321	REQ (EIO_MTOUCH); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND;	2175	REQ (EIO_MTOUCH); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND;
1322	}	2176	}
1323		2177
		2178	eio_req *eio_mlock (void *addr, size_t length, int pri, eio_cb cb, void *data)
		2179	{
		2180	REQ (EIO_MLOCK); req->ptr2 = addr; req->size = length; SEND;
		2181	}
		2182
		2183	eio_req *eio_mlockall (int flags, int pri, eio_cb cb, void *data)
		2184	{
		2185	REQ (EIO_MLOCKALL); req->int1 = flags; SEND;
		2186	}
		2187
1324	eio_req *eio_sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags, int pri, eio_cb cb, void *data)	2188	eio_req *eio_sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags, int pri, eio_cb cb, void *data)
1325	{	2189	{
1326	REQ (EIO_SYNC_FILE_RANGE); req->int1 = fd; req->offs = offset; req->size = nbytes; req->int2 = flags; SEND;	2190	REQ (EIO_SYNC_FILE_RANGE); req->int1 = fd; req->offs = offset; req->size = nbytes; req->int2 = flags; SEND;
1327	}	2191	}
1328		2192
		2193	eio_req *eio_fallocate (int fd, int mode, off_t offset, size_t len, int pri, eio_cb cb, void *data)
		2194	{
		2195	REQ (EIO_FALLOCATE); req->int1 = fd; req->int2 = mode; req->offs = offset; req->size = len; SEND;
		2196	}
		2197
1329	eio_req *eio_fdatasync (int fd, int pri, eio_cb cb, void *data)	2198	eio_req *eio_fdatasync (int fd, int pri, eio_cb cb, void *data)
1330	{	2199	{
1331	REQ (EIO_FDATASYNC); req->int1 = fd; SEND;	2200	REQ (EIO_FDATASYNC); req->int1 = fd; SEND;
1332	}	2201	}
1333		2202
…		…
1354	eio_req *eio_fstat (int fd, int pri, eio_cb cb, void *data)	2223	eio_req *eio_fstat (int fd, int pri, eio_cb cb, void *data)
1355	{	2224	{
1356	REQ (EIO_FSTAT); req->int1 = fd; SEND;	2225	REQ (EIO_FSTAT); req->int1 = fd; SEND;
1357	}	2226	}
1358		2227
		2228	eio_req *eio_fstatvfs (int fd, int pri, eio_cb cb, void *data)
		2229	{
		2230	REQ (EIO_FSTATVFS); req->int1 = fd; SEND;
		2231	}
		2232
1359	eio_req *eio_futime (int fd, double atime, double mtime, int pri, eio_cb cb, void *data)	2233	eio_req *eio_futime (int fd, double atime, double mtime, int pri, eio_cb cb, void *data)
1360	{	2234	{
1361	REQ (EIO_FUTIME); req->int1 = fd; req->nv1 = atime; req->nv2 = mtime; SEND;	2235	REQ (EIO_FUTIME); req->int1 = fd; req->nv1 = atime; req->nv2 = mtime; SEND;
1362	}	2236	}
1363		2237
…		…
1369	eio_req *eio_fchmod (int fd, mode_t mode, int pri, eio_cb cb, void *data)	2243	eio_req *eio_fchmod (int fd, mode_t mode, int pri, eio_cb cb, void *data)
1370	{	2244	{
1371	REQ (EIO_FCHMOD); req->int1 = fd; req->int2 = (long)mode; SEND;	2245	REQ (EIO_FCHMOD); req->int1 = fd; req->int2 = (long)mode; SEND;
1372	}	2246	}
1373		2247
1374	eio_req *eio_fchown (int fd, uid_t uid, gid_t gid, int pri, eio_cb cb, void *data)	2248	eio_req *eio_fchown (int fd, eio_uid_t uid, eio_gid_t gid, int pri, eio_cb cb, void *data)
1375	{	2249	{
1376	REQ (EIO_FCHOWN); req->int1 = fd; req->int2 = (long)uid; req->int3 = (long)gid; SEND;	2250	REQ (EIO_FCHOWN); req->int1 = fd; req->int2 = (long)uid; req->int3 = (long)gid; SEND;
1377	}	2251	}
1378		2252
1379	eio_req *eio_dup2 (int fd, int fd2, int pri, eio_cb cb, void *data)	2253	eio_req *eio_dup2 (int fd, int fd2, int pri, eio_cb cb, void *data)
…		…
1399	eio_req *eio_truncate (const char *path, off_t offset, int pri, eio_cb cb, void *data)	2273	eio_req *eio_truncate (const char *path, off_t offset, int pri, eio_cb cb, void *data)
1400	{	2274	{
1401	REQ (EIO_TRUNCATE); PATH; req->offs = offset; SEND;	2275	REQ (EIO_TRUNCATE); PATH; req->offs = offset; SEND;
1402	}	2276	}
1403		2277
1404	eio_req *eio_chown (const char *path, uid_t uid, gid_t gid, int pri, eio_cb cb, void *data)	2278	eio_req *eio_chown (const char *path, eio_uid_t uid, eio_gid_t gid, int pri, eio_cb cb, void *data)
1405	{	2279	{
1406	REQ (EIO_CHOWN); PATH; req->int2 = (long)uid; req->int3 = (long)gid; SEND;	2280	REQ (EIO_CHOWN); PATH; req->int2 = (long)uid; req->int3 = (long)gid; SEND;
1407	}	2281	}
1408		2282
1409	eio_req *eio_chmod (const char *path, mode_t mode, int pri, eio_cb cb, void *data)	2283	eio_req *eio_chmod (const char *path, mode_t mode, int pri, eio_cb cb, void *data)
…		…
1425	eio_req *eio_readlink (const char *path, int pri, eio_cb cb, void *data)	2299	eio_req *eio_readlink (const char *path, int pri, eio_cb cb, void *data)
1426	{	2300	{
1427	return eio__1path (EIO_READLINK, path, pri, cb, data);	2301	return eio__1path (EIO_READLINK, path, pri, cb, data);
1428	}	2302	}
1429		2303
		2304	eio_req *eio_realpath (const char *path, int pri, eio_cb cb, void *data)
		2305	{
		2306	return eio__1path (EIO_REALPATH, path, pri, cb, data);
		2307	}
		2308
1430	eio_req *eio_stat (const char *path, int pri, eio_cb cb, void *data)	2309	eio_req *eio_stat (const char *path, int pri, eio_cb cb, void *data)
1431	{	2310	{
1432	return eio__1path (EIO_STAT, path, pri, cb, data);	2311	return eio__1path (EIO_STAT, path, pri, cb, data);
1433	}	2312	}
1434		2313
1435	eio_req *eio_lstat (const char *path, int pri, eio_cb cb, void *data)	2314	eio_req *eio_lstat (const char *path, int pri, eio_cb cb, void *data)
1436	{	2315	{
1437	return eio__1path (EIO_LSTAT, path, pri, cb, data);	2316	return eio__1path (EIO_LSTAT, path, pri, cb, data);
1438	}	2317	}
1439		2318
		2319	eio_req *eio_statvfs (const char *path, int pri, eio_cb cb, void *data)
		2320	{
		2321	return eio__1path (EIO_STATVFS, path, pri, cb, data);
		2322	}
		2323
1440	eio_req *eio_unlink (const char *path, int pri, eio_cb cb, void *data)	2324	eio_req *eio_unlink (const char *path, int pri, eio_cb cb, void *data)
1441	{	2325	{
1442	return eio__1path (EIO_UNLINK, path, pri, cb, data);	2326	return eio__1path (EIO_UNLINK, path, pri, cb, data);
1443	}	2327	}
1444		2328
1445	eio_req *eio_rmdir (const char *path, int pri, eio_cb cb, void *data)	2329	eio_req *eio_rmdir (const char *path, int pri, eio_cb cb, void *data)
1446	{	2330	{
1447	return eio__1path (EIO_RMDIR, path, pri, cb, data);	2331	return eio__1path (EIO_RMDIR, path, pri, cb, data);
1448	}	2332	}
1449		2333
1450	eio_req *eio_readdir (const char *path, int pri, eio_cb cb, void *data)	2334	eio_req *eio_readdir (const char *path, int flags, int pri, eio_cb cb, void *data)
1451	{	2335	{
1452	return eio__1path (EIO_READDIR, path, pri, cb, data);	2336	REQ (EIO_READDIR); PATH; req->int1 = flags; SEND;
1453	}	2337	}
1454		2338
1455	eio_req *eio_mknod (const char *path, mode_t mode, dev_t dev, int pri, eio_cb cb, void *data)	2339	eio_req *eio_mknod (const char *path, mode_t mode, dev_t dev, int pri, eio_cb cb, void *data)
1456	{	2340	{
1457	REQ (EIO_MKNOD); PATH; req->int2 = (long)mode; req->int3 = (long)dev; SEND;	2341	REQ (EIO_MKNOD); PATH; req->int2 = (long)mode; req->offs = (off_t)dev; SEND;
1458	}	2342	}
1459		2343
1460	static eio_req *	2344	static eio_req *
1461	eio__2path (int type, const char *path, const char *new_path, int pri, eio_cb cb, void *data)	2345	eio__2path (int type, const char *path, const char *new_path, int pri, eio_cb cb, void *data)
1462	{	2346	{
…		…
1486	eio_req *eio_rename (const char *path, const char *new_path, int pri, eio_cb cb, void *data)	2370	eio_req *eio_rename (const char *path, const char *new_path, int pri, eio_cb cb, void *data)
1487	{	2371	{
1488	return eio__2path (EIO_RENAME, path, new_path, pri, cb, data);	2372	return eio__2path (EIO_RENAME, path, new_path, pri, cb, data);
1489	}	2373	}
1490		2374
1491	eio_req *eio_custom (eio_cb execute, int pri, eio_cb cb, void *data)	2375	eio_req *eio_custom (void (*execute)(eio_req *), int pri, eio_cb cb, void *data)
1492	{	2376	{
1493	REQ (EIO_CUSTOM); req->feed = (void (*)(eio_req *))execute; SEND;	2377	REQ (EIO_CUSTOM); req->feed = execute; SEND;
1494	}	2378	}
1495		2379
1496	#endif	2380	#endif
1497		2381
1498	eio_req *eio_grp (eio_cb cb, void *data)	2382	eio_req *eio_grp (eio_cb cb, void *data)
…		…
1507	#undef SEND	2391	#undef SEND
1508		2392
1509	/*****************************************************************************/	2393	/*****************************************************************************/
1510	/* grp functions */	2394	/* grp functions */
1511		2395
		2396	void
1512	void eio_grp_feed (eio_req *grp, void (*feed)(eio_req *req), int limit)	2397	eio_grp_feed (eio_req *grp, void (*feed)(eio_req *req), int limit)
1513	{	2398	{
1514	grp->int2 = limit;	2399	grp->int2 = limit;
1515	grp->feed = feed;	2400	grp->feed = feed;
1516		2401
1517	grp_try_feed (grp);	2402	grp_try_feed (grp);
1518	}	2403	}
1519		2404
		2405	void
1520	void eio_grp_limit (eio_req *grp, int limit)	2406	eio_grp_limit (eio_req *grp, int limit)
1521	{	2407	{
1522	grp->int2 = limit;	2408	grp->int2 = limit;
1523		2409
1524	grp_try_feed (grp);	2410	grp_try_feed (grp);
1525	}	2411	}
1526		2412
		2413	void
1527	void eio_grp_add (eio_req *grp, eio_req *req)	2414	eio_grp_add (eio_req *grp, eio_req *req)
1528	{	2415	{
1529	assert (("cannot add requests to IO::AIO::GRP after the group finished", grp->int1 != 2));	2416	assert (("cannot add requests to IO::AIO::GRP after the group finished", grp->int1 != 2));
1530		2417
1531	grp->flags |= EIO_FLAG_GROUPADD;	2418	grp->flags |= EIO_FLAG_GROUPADD;
1532		2419
…		…
1543	}	2430	}
1544		2431
1545	/*****************************************************************************/	2432	/*****************************************************************************/
1546	/* misc garbage */	2433	/* misc garbage */
1547		2434
		2435	eio_ssize_t
1548	ssize_t eio_sendfile_sync (int ofd, int ifd, off_t offset, size_t count)	2436	eio_sendfile_sync (int ofd, int ifd, off_t offset, size_t count)
1549	{	2437	{
1550	etp_worker wrk;	2438	etp_worker wrk;
		2439	eio_ssize_t ret;
1551		2440
1552	wrk.dbuf = 0;	2441	wrk.dbuf = 0;
1553		2442
1554	eio__sendfile (ofd, ifd, offset, count, &wrk);	2443	ret = eio__sendfile (ofd, ifd, offset, count, &wrk);
1555		2444
1556	if (wrk.dbuf)	2445	if (wrk.dbuf)
1557	free (wrk.dbuf);	2446	free (wrk.dbuf);
1558	}
1559		2447
		2448	return ret;
		2449	}
		2450

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