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Comparing libeio/eio.c (file contents):
Revision 1.62 by root, Tue Feb 15 03:15:16 2011 UTC vs.
Revision 1.101 by root, Wed Aug 3 15:25:38 2011 UTC

…		…
35	* and other provisions required by the GPL. If you do not delete the	35	* and other provisions required by the GPL. If you do not delete the
36	* provisions above, a recipient may use your version of this file under	36	* provisions above, a recipient may use your version of this file under
37	* either the BSD or the GPL.	37	* either the BSD or the GPL.
38	*/	38	*/
39		39
		40	#ifndef _WIN32
		41	# include "config.h"
		42	#endif
		43
40	#include "eio.h"	44	#include "eio.h"
		45	#include "ecb.h"
41		46
42	#ifdef EIO_STACKSIZE	47	#ifdef EIO_STACKSIZE
43	# define XTHREAD_STACKSIZE EIO_STACKSIZE	48	# define XTHREAD_STACKSIZE EIO_STACKSIZE
44	#endif	49	#endif
45	#include "xthread.h"	50	#include "xthread.h"
…		…
49	#include <stdlib.h>	54	#include <stdlib.h>
50	#include <string.h>	55	#include <string.h>
51	#include <errno.h>	56	#include <errno.h>
52	#include <sys/types.h>	57	#include <sys/types.h>
53	#include <sys/stat.h>	58	#include <sys/stat.h>
54	#include <sys/statvfs.h>
55	#include <limits.h>	59	#include <limits.h>
56	#include <fcntl.h>	60	#include <fcntl.h>
57	#include <assert.h>	61	#include <assert.h>
58		62
		63	/* intptr_t comes from unistd.h, says POSIX/UNIX/tradition */
		64	/* intptr_t only comes from stdint.h, says idiot openbsd coder */
		65	#if HAVE_STDINT_H
		66	# include <stdint.h>
		67	#endif
		68
		69	#ifndef ECANCELED
		70	# define ECANCELED EDOM
		71	#endif
		72	#ifndef ELOOP
		73	# define ELOOP EDOM
		74	#endif
		75
		76	#if !defined(ENOTSOCK) && defined(WSAENOTSOCK)
		77	# define ENOTSOCK WSAENOTSOCK
		78	#endif
		79
		80	static void eio_destroy (eio_req *req);
		81
59	#ifndef EIO_FINISH	82	#ifndef EIO_FINISH
60	# define EIO_FINISH(req) ((req)->finish) && !EIO_CANCELLED (req) ? (req)->finish (req) : 0	83	# define EIO_FINISH(req) ((req)->finish) && !EIO_CANCELLED (req) ? (req)->finish (req) : 0
61	#endif	84	#endif
62		85
63	#ifndef EIO_DESTROY	86	#ifndef EIO_DESTROY
…		…
66		89
67	#ifndef EIO_FEED	90	#ifndef EIO_FEED
68	# define EIO_FEED(req) do { if ((req)->feed ) (req)->feed (req); } while (0)	91	# define EIO_FEED(req) do { if ((req)->feed ) (req)->feed (req); } while (0)
69	#endif	92	#endif
70		93
		94	#ifndef EIO_FD_TO_WIN32_HANDLE
		95	# define EIO_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
		96	#endif
		97	#ifndef EIO_WIN32_HANDLE_TO_FD
		98	# define EIO_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
		99	#endif
		100
		101	#define EIO_ERRNO(errval,retval) ((errno = errval), retval)
		102
		103	#define EIO_ENOSYS() EIO_ERRNO (ENOSYS, -1)
		104
71	#ifdef _WIN32	105	#ifdef _WIN32
72		106
73	/*doh*/	107	#undef PAGESIZE
		108	#define PAGESIZE 4096 /* GetSystemInfo? */
		109
		110	/* TODO: look at how perl does stat (non-sloppy), unlink (ro-files), utime, link */
		111
		112	#ifdef EIO_STRUCT_STATI64
		113	/* look at perl's non-sloppy stat */
		114	#define stat(path,buf) _stati64 (path,buf)
		115	#define fstat(fd,buf) _fstati64 (fd,buf)
		116	#endif
		117	#define lstat(path,buf) stat (path,buf)
		118	#define fsync(fd) (FlushFileBuffers ((HANDLE)EIO_FD_TO_WIN32_HANDLE (fd)) ? 0 : EIO_ERRNO (EBADF, -1))
		119	#define mkdir(path,mode) _mkdir (path)
		120	#define link(old,neu) (CreateHardLink (neu, old, 0) ? 0 : EIO_ERRNO (ENOENT, -1))
		121
		122	#define chmod(path,mode) _chmod (path, mode)
		123	#define dup(fd) _dup (fd)
		124	#define dup2(fd1,fd2) _dup2 (fd1, fd2)
		125
		126	#define fchmod(fd,mode) EIO_ENOSYS ()
		127	#define chown(path,uid,gid) EIO_ENOSYS ()
		128	#define fchown(fd,uid,gid) EIO_ENOSYS ()
		129	#define truncate(path,offs) EIO_ENOSYS () /* far-miss: SetEndOfFile */
		130	#define ftruncate(fd,offs) EIO_ENOSYS () /* near-miss: SetEndOfFile */
		131	#define mknod(path,mode,dev) EIO_ENOSYS ()
		132	#define sync() EIO_ENOSYS ()
		133	#define readlink(path,buf,s) EIO_ENOSYS ()
		134	#define statvfs(path,buf) EIO_ENOSYS ()
		135	#define fstatvfs(fd,buf) EIO_ENOSYS ()
		136
		137	/* rename() uses MoveFile, which fails to overwrite */
		138	#define rename(old,neu) eio__rename (old, neu)
		139
		140	static int
		141	eio__rename (const char *old, const char *neu)
		142	{
		143	if (MoveFileEx (old, neu, MOVEFILE_REPLACE_EXISTING))
		144	return 0;
		145
		146	/* should steal _dosmaperr */
		147	switch (GetLastError ())
		148	{
		149	case ERROR_FILE_NOT_FOUND:
		150	case ERROR_PATH_NOT_FOUND:
		151	case ERROR_INVALID_DRIVE:
		152	case ERROR_NO_MORE_FILES:
		153	case ERROR_BAD_NETPATH:
		154	case ERROR_BAD_NET_NAME:
		155	case ERROR_BAD_PATHNAME:
		156	case ERROR_FILENAME_EXCED_RANGE:
		157	errno = ENOENT;
		158	break;
		159
		160	default:
		161	errno = EACCES;
		162	break;
		163	}
		164
		165	return -1;
		166	}
		167
		168	/* we could even stat and see if it exists */
		169	static int
		170	symlink (const char *old, const char *neu)
		171	{
		172	#if WINVER >= 0x0600
		173	if (CreateSymbolicLink (neu, old, 1))
		174	return 0;
		175
		176	if (CreateSymbolicLink (neu, old, 0))
		177	return 0;
		178	#endif
		179
		180	return EIO_ERRNO (ENOENT, -1);
		181	}
		182
		183	/* POSIX API only */
		184	#define CreateHardLink(neu,old,flags) 0
		185	#define CreateSymbolicLink(neu,old,flags) 0
		186
		187	struct statvfs
		188	{
		189	int dummy;
		190	};
		191
		192	#define DT_DIR EIO_DT_DIR
		193	#define DT_REG EIO_DT_REG
		194	#define D_NAME(entp) entp.cFileName
		195	#define D_TYPE(entp) (entp.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY ? DT_DIR : DT_REG)
		196
74	#else	197	#else
75		198
76	# include "config.h"
77	# include <sys/time.h>	199	#include <sys/time.h>
78	# include <sys/select.h>	200	#include <sys/select.h>
		201	#include <sys/statvfs.h>
79	# include <unistd.h>	202	#include <unistd.h>
		203	#include <signal.h>
		204	#include <dirent.h>
		205
		206	#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
		207	#include <sys/mman.h>
		208	#endif
		209
		210	#define D_NAME(entp) entp->d_name
		211
		212	/* POSIX_SOURCE is useless on bsd's, and XOPEN_SOURCE is unreliable there, too */
		213	#if __FreeBSD__ || defined __NetBSD__ || defined __OpenBSD__
		214	#define _DIRENT_HAVE_D_TYPE /* sigh */
		215	#define D_INO(de) (de)->d_fileno
		216	#define D_NAMLEN(de) (de)->d_namlen
		217	#elif __linux || defined d_ino || _XOPEN_SOURCE >= 600
		218	#define D_INO(de) (de)->d_ino
		219	#endif
		220
		221	#ifdef _D_EXACT_NAMLEN
		222	#undef D_NAMLEN
		223	#define D_NAMLEN(de) _D_EXACT_NAMLEN (de)
		224	#endif
		225
		226	#ifdef _DIRENT_HAVE_D_TYPE
		227	#define D_TYPE(de) (de)->d_type
		228	#endif
		229
		230	#ifndef EIO_STRUCT_DIRENT
		231	#define EIO_STRUCT_DIRENT struct dirent
		232	#endif
		233
		234	#endif
		235
		236	#if HAVE_UTIMES
80	# include <utime.h>	237	# include <utime.h>
81	# include <signal.h>
82	# include <dirent.h>
83
84	#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
85	# include <sys/mman.h>
86	#endif
87
88	/* POSIX_SOURCE is useless on bsd's, and XOPEN_SOURCE is unreliable there, too */
89	# if __FreeBSD__ || defined __NetBSD__ || defined __OpenBSD__
90	# define _DIRENT_HAVE_D_TYPE /* sigh */
91	# define D_INO(de) (de)->d_fileno
92	# define D_NAMLEN(de) (de)->d_namlen
93	# elif __linux || defined d_ino || _XOPEN_SOURCE >= 600
94	# define D_INO(de) (de)->d_ino
95	# endif	238	#endif
96		239
97	#ifdef _D_EXACT_NAMLEN	240	#if HAVE_SYS_SYSCALL_H
98	# undef D_NAMLEN	241	# include <sys/syscall.h>
99	# define D_NAMLEN(de) _D_EXACT_NAMLEN (de)
100	#endif
101
102	# ifdef _DIRENT_HAVE_D_TYPE
103	# define D_TYPE(de) (de)->d_type
104	# endif	242	#endif
105		243
106	# ifndef EIO_STRUCT_DIRENT	244	#if HAVE_SYS_PRCTL_H
107	# define EIO_STRUCT_DIRENT struct dirent	245	# include <sys/prctl.h>
108	# endif
109
110	#endif	246	#endif
111		247
112	#if HAVE_SENDFILE	248	#if HAVE_SENDFILE
113	# if __linux	249	# if __linux
114	# include <sys/sendfile.h>	250	# include <sys/sendfile.h>
…		…
129	#endif	265	#endif
130	#ifndef D_INO	266	#ifndef D_INO
131	# define D_INO(de) 0	267	# define D_INO(de) 0
132	#endif	268	#endif
133	#ifndef D_NAMLEN	269	#ifndef D_NAMLEN
134	# define D_NAMLEN(de) strlen ((de)->d_name)	270	# define D_NAMLEN(entp) strlen (D_NAME (entp))
135	#endif	271	#endif
136		272
137	/* used for struct dirent, AIX doesn't provide it */	273	/* used for struct dirent, AIX doesn't provide it */
138	#ifndef NAME_MAX	274	#ifndef NAME_MAX
139	# define NAME_MAX 4096	275	# define NAME_MAX 4096
…		…
146		282
147	/* buffer size for various temporary buffers */	283	/* buffer size for various temporary buffers */
148	#define EIO_BUFSIZE 65536	284	#define EIO_BUFSIZE 65536
149		285
150	#define dBUF \	286	#define dBUF \
151	char *eio_buf; \
152	ETP_WORKER_LOCK (self); \
153	self->dbuf = eio_buf = malloc (EIO_BUFSIZE); \	287	char *eio_buf = malloc (EIO_BUFSIZE); \
154	ETP_WORKER_UNLOCK (self); \
155	errno = ENOMEM; \	288	errno = ENOMEM; \
156	if (!eio_buf) \	289	if (!eio_buf) \
157	return -1;	290	return -1
		291
		292	#define FUBd \
		293	free (eio_buf)
158		294
159	#define EIO_TICKS ((1000000 + 1023) >> 10)	295	#define EIO_TICKS ((1000000 + 1023) >> 10)
160
161	/*****************************************************************************/
162
163	#if __GNUC__ >= 3
164	# define expect(expr,value) __builtin_expect ((expr),(value))
165	#else
166	# define expect(expr,value) (expr)
167	#endif
168
169	#define expect_false(expr) expect ((expr) != 0, 0)
170	#define expect_true(expr) expect ((expr) != 0, 1)
171
172	/*****************************************************************************/
173		296
174	#define ETP_PRI_MIN EIO_PRI_MIN	297	#define ETP_PRI_MIN EIO_PRI_MIN
175	#define ETP_PRI_MAX EIO_PRI_MAX	298	#define ETP_PRI_MAX EIO_PRI_MAX
176		299
177	struct etp_worker;	300	struct etp_worker;
…		…
181	static int eio_finish (eio_req *req);	304	static int eio_finish (eio_req *req);
182	#define ETP_FINISH(req) eio_finish (req)	305	#define ETP_FINISH(req) eio_finish (req)
183	static void eio_execute (struct etp_worker *self, eio_req *req);	306	static void eio_execute (struct etp_worker *self, eio_req *req);
184	#define ETP_EXECUTE(wrk,req) eio_execute (wrk,req)	307	#define ETP_EXECUTE(wrk,req) eio_execute (wrk,req)
185		308
186	#define ETP_WORKER_CLEAR(req) \
187	if (wrk->dbuf) \
188	{ \
189	free (wrk->dbuf); \
190	wrk->dbuf = 0; \
191	} \
192	\
193	if (wrk->dirp) \
194	{ \
195	closedir (wrk->dirp); \
196	wrk->dirp = 0; \
197	}
198
199	#define ETP_WORKER_COMMON \
200	void *dbuf; \
201	DIR *dirp;
202
203	/*****************************************************************************/	309	/*****************************************************************************/
204		310
205	#define ETP_NUM_PRI (ETP_PRI_MAX - ETP_PRI_MIN + 1)	311	#define ETP_NUM_PRI (ETP_PRI_MAX - ETP_PRI_MIN + 1)
206		312
207	/* calculate time difference in ~1/EIO_TICKS of a second */	313	/* calculate time difference in ~1/EIO_TICKS of a second */
		314	ecb_inline int
208	static int tvdiff (struct timeval *tv1, struct timeval *tv2)	315	tvdiff (struct timeval *tv1, struct timeval *tv2)
209	{	316	{
210	return (tv2->tv_sec - tv1->tv_sec ) * EIO_TICKS	317	return (tv2->tv_sec - tv1->tv_sec ) * EIO_TICKS
211	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);	318	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
212	}	319	}
213		320
…		…
217	static void (*done_poll_cb) (void);	324	static void (*done_poll_cb) (void);
218		325
219	static unsigned int max_poll_time; /* reslock */	326	static unsigned int max_poll_time; /* reslock */
220	static unsigned int max_poll_reqs; /* reslock */	327	static unsigned int max_poll_reqs; /* reslock */
221		328
222	static volatile unsigned int nreqs; /* reqlock */	329	static unsigned int nreqs; /* reqlock */
223	static volatile unsigned int nready; /* reqlock */	330	static unsigned int nready; /* reqlock */
224	static volatile unsigned int npending; /* reqlock */	331	static unsigned int npending; /* reqlock */
225	static volatile unsigned int max_idle = 4; /* maximum number of threads that can idle indefinitely */	332	static unsigned int max_idle = 4; /* maximum number of threads that can idle indefinitely */
226	static volatile unsigned int idle_timeout = 10; /* number of seconds after which an idle threads exit */	333	static unsigned int idle_timeout = 10; /* number of seconds after which an idle threads exit */
227		334
228	static xmutex_t wrklock;	335	static xmutex_t wrklock;
229	static xmutex_t reslock;	336	static xmutex_t reslock;
230	static xmutex_t reqlock;	337	static xmutex_t reqlock;
231	static xcond_t reqwait;	338	static xcond_t reqwait;
…		…
234	/*	341	/*
235	* make our pread/pwrite emulation safe against themselves, but not against	342	* make our pread/pwrite emulation safe against themselves, but not against
236	* normal read/write by using a mutex. slows down execution a lot,	343	* normal read/write by using a mutex. slows down execution a lot,
237	* but that's your problem, not mine.	344	* but that's your problem, not mine.
238	*/	345	*/
239	static xmutex_t preadwritelock = X_MUTEX_INIT;	346	static xmutex_t preadwritelock;
240	#endif	347	#endif
241		348
242	typedef struct etp_worker	349	typedef struct etp_worker
243	{	350	{
244	/* locked by wrklock */	351	/* locked by wrklock */
…		…
247	xthread_t tid;	354	xthread_t tid;
248		355
249	/* locked by reslock, reqlock or wrklock */	356	/* locked by reslock, reqlock or wrklock */
250	ETP_REQ *req; /* currently processed request */	357	ETP_REQ *req; /* currently processed request */
251		358
		359	#ifdef ETP_WORKER_COMMON
252	ETP_WORKER_COMMON	360	ETP_WORKER_COMMON
		361	#endif
253	} etp_worker;	362	} etp_worker;
254		363
255	static etp_worker wrk_first = { &wrk_first, &wrk_first, 0 }; /* NOT etp */	364	static etp_worker wrk_first; /* NOT etp */
256		365
257	#define ETP_WORKER_LOCK(wrk) X_LOCK (wrklock)	366	#define ETP_WORKER_LOCK(wrk) X_LOCK (wrklock)
258	#define ETP_WORKER_UNLOCK(wrk) X_UNLOCK (wrklock)	367	#define ETP_WORKER_UNLOCK(wrk) X_UNLOCK (wrklock)
259		368
260	/* worker threads management */	369	/* worker threads management */
261		370
		371	static void ecb_cold
262	static void etp_worker_clear (etp_worker *wrk)	372	etp_worker_clear (etp_worker *wrk)
263	{	373	{
264	ETP_WORKER_CLEAR (wrk);
265	}	374	}
266		375
		376	static void ecb_cold
267	static void etp_worker_free (etp_worker *wrk)	377	etp_worker_free (etp_worker *wrk)
268	{	378	{
269	wrk->next->prev = wrk->prev;	379	wrk->next->prev = wrk->prev;
270	wrk->prev->next = wrk->next;	380	wrk->prev->next = wrk->next;
271		381
272	free (wrk);	382	free (wrk);
273	}	383	}
274		384
275	static unsigned int etp_nreqs (void)	385	static unsigned int
		386	etp_nreqs (void)
276	{	387	{
277	int retval;	388	int retval;
278	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);	389	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
279	retval = nreqs;	390	retval = nreqs;
280	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);	391	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
281	return retval;	392	return retval;
282	}	393	}
283		394
284	static unsigned int etp_nready (void)	395	static unsigned int
		396	etp_nready (void)
285	{	397	{
286	unsigned int retval;	398	unsigned int retval;
287		399
288	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);	400	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
289	retval = nready;	401	retval = nready;
290	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);	402	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
291		403
292	return retval;	404	return retval;
293	}	405	}
294		406
295	static unsigned int etp_npending (void)	407	static unsigned int
		408	etp_npending (void)
296	{	409	{
297	unsigned int retval;	410	unsigned int retval;
298		411
299	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);	412	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
300	retval = npending;	413	retval = npending;
301	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);	414	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
302		415
303	return retval;	416	return retval;
304	}	417	}
305		418
306	static unsigned int etp_nthreads (void)	419	static unsigned int
		420	etp_nthreads (void)
307	{	421	{
308	unsigned int retval;	422	unsigned int retval;
309		423
310	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);	424	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
311	retval = started;	425	retval = started;
…		…
325	} etp_reqq;	439	} etp_reqq;
326		440
327	static etp_reqq req_queue;	441	static etp_reqq req_queue;
328	static etp_reqq res_queue;	442	static etp_reqq res_queue;
329		443
		444	static void ecb_noinline ecb_cold
		445	reqq_init (etp_reqq *q)
		446	{
		447	int pri;
		448
		449	for (pri = 0; pri < ETP_NUM_PRI; ++pri)
		450	q->qs[pri] = q->qe[pri] = 0;
		451
		452	q->size = 0;
		453	}
		454
		455	static int ecb_noinline
330	static int reqq_push (etp_reqq *q, ETP_REQ *req)	456	reqq_push (etp_reqq *q, ETP_REQ *req)
331	{	457	{
332	int pri = req->pri;	458	int pri = req->pri;
333	req->next = 0;	459	req->next = 0;
334		460
335	if (q->qe[pri])	461	if (q->qe[pri])
…		…
341	q->qe[pri] = q->qs[pri] = req;	467	q->qe[pri] = q->qs[pri] = req;
342		468
343	return q->size++;	469	return q->size++;
344	}	470	}
345		471
		472	static ETP_REQ * ecb_noinline
346	static ETP_REQ *reqq_shift (etp_reqq *q)	473	reqq_shift (etp_reqq *q)
347	{	474	{
348	int pri;	475	int pri;
349		476
350	if (!q->size)	477	if (!q->size)
351	return 0;	478	return 0;
…		…
366	}	493	}
367		494
368	abort ();	495	abort ();
369	}	496	}
370		497
371	static void etp_thread_init (void)	498	static int ecb_cold
		499	etp_init (void (*want_poll)(void), void (*done_poll)(void))
372	{	500	{
373	X_MUTEX_CREATE (wrklock);	501	X_MUTEX_CREATE (wrklock);
374	X_MUTEX_CREATE (reslock);	502	X_MUTEX_CREATE (reslock);
375	X_MUTEX_CREATE (reqlock);	503	X_MUTEX_CREATE (reqlock);
376	X_COND_CREATE (reqwait);	504	X_COND_CREATE (reqwait);
377	}
378		505
379	static void etp_atfork_prepare (void)	506	reqq_init (&req_queue);
380	{	507	reqq_init (&res_queue);
381	X_LOCK (wrklock);
382	X_LOCK (reqlock);
383	X_LOCK (reslock);
384	#if !HAVE_PREADWRITE
385	X_LOCK (preadwritelock);
386	#endif
387	}
388		508
389	static void etp_atfork_parent (void)	509	wrk_first.next =
390	{	510	wrk_first.prev = &wrk_first;
391	#if !HAVE_PREADWRITE
392	X_UNLOCK (preadwritelock);
393	#endif
394	X_UNLOCK (reslock);
395	X_UNLOCK (reqlock);
396	X_UNLOCK (wrklock);
397	}
398
399	static void etp_atfork_child (void)
400	{
401	ETP_REQ *prv;
402
403	while ((prv = reqq_shift (&req_queue)))
404	ETP_DESTROY (prv);
405
406	while ((prv = reqq_shift (&res_queue)))
407	ETP_DESTROY (prv);
408
409	while (wrk_first.next != &wrk_first)
410	{
411	etp_worker *wrk = wrk_first.next;
412
413	if (wrk->req)
414	ETP_DESTROY (wrk->req);
415
416	etp_worker_clear (wrk);
417	etp_worker_free (wrk);
418	}
419		511
420	started = 0;	512	started = 0;
421	idle = 0;	513	idle = 0;
422	nreqs = 0;	514	nreqs = 0;
423	nready = 0;	515	nready = 0;
424	npending = 0;	516	npending = 0;
425		517
426	etp_thread_init ();
427	}
428
429	static void
430	etp_once_init (void)
431	{
432	etp_thread_init ();
433	X_THREAD_ATFORK (etp_atfork_prepare, etp_atfork_parent, etp_atfork_child);
434	}
435
436	static int
437	etp_init (void (*want_poll)(void), void (*done_poll)(void))
438	{
439	static pthread_once_t doinit = PTHREAD_ONCE_INIT;
440
441	pthread_once (&doinit, etp_once_init);
442
443	want_poll_cb = want_poll;	518	want_poll_cb = want_poll;
444	done_poll_cb = done_poll;	519	done_poll_cb = done_poll;
445		520
446	return 0;	521	return 0;
447	}	522	}
448		523
449	X_THREAD_PROC (etp_proc);	524	X_THREAD_PROC (etp_proc);
450		525
		526	static void ecb_cold
451	static void etp_start_thread (void)	527	etp_start_thread (void)
452	{	528	{
453	etp_worker *wrk = calloc (1, sizeof (etp_worker));	529	etp_worker *wrk = calloc (1, sizeof (etp_worker));
454		530
455	/*TODO*/	531	/*TODO*/
456	assert (("unable to allocate worker thread data", wrk));	532	assert (("unable to allocate worker thread data", wrk));
…		…
469	free (wrk);	545	free (wrk);
470		546
471	X_UNLOCK (wrklock);	547	X_UNLOCK (wrklock);
472	}	548	}
473		549
		550	static void
474	static void etp_maybe_start_thread (void)	551	etp_maybe_start_thread (void)
475	{	552	{
476	if (expect_true (etp_nthreads () >= wanted))	553	if (ecb_expect_true (etp_nthreads () >= wanted))
477	return;	554	return;
478		555
479	/* todo: maybe use idle here, but might be less exact */	556	/* todo: maybe use idle here, but might be less exact */
480	if (expect_true (0 <= (int)etp_nthreads () + (int)etp_npending () - (int)etp_nreqs ()))	557	if (ecb_expect_true (0 <= (int)etp_nthreads () + (int)etp_npending () - (int)etp_nreqs ()))
481	return;	558	return;
482		559
483	etp_start_thread ();	560	etp_start_thread ();
484	}	561	}
485		562
		563	static void ecb_cold
486	static void etp_end_thread (void)	564	etp_end_thread (void)
487	{	565	{
488	eio_req *req = calloc (1, sizeof (eio_req));	566	eio_req *req = calloc (1, sizeof (eio_req));
489		567
490	req->type = -1;	568	req->type = -1;
491	req->pri = ETP_PRI_MAX - ETP_PRI_MIN;	569	req->pri = ETP_PRI_MAX - ETP_PRI_MIN;
…		…
498	X_LOCK (wrklock);	576	X_LOCK (wrklock);
499	--started;	577	--started;
500	X_UNLOCK (wrklock);	578	X_UNLOCK (wrklock);
501	}	579	}
502		580
503	static int etp_poll (void)	581	static int
		582	etp_poll (void)
504	{	583	{
505	unsigned int maxreqs;	584	unsigned int maxreqs;
506	unsigned int maxtime;	585	unsigned int maxtime;
507	struct timeval tv_start, tv_now;	586	struct timeval tv_start, tv_now;
508		587
…		…
538		617
539	X_LOCK (reqlock);	618	X_LOCK (reqlock);
540	--nreqs;	619	--nreqs;
541	X_UNLOCK (reqlock);	620	X_UNLOCK (reqlock);
542		621
543	if (expect_false (req->type == EIO_GROUP && req->size))	622	if (ecb_expect_false (req->type == EIO_GROUP && req->size))
544	{	623	{
545	req->int1 = 1; /* mark request as delayed */	624	req->int1 = 1; /* mark request as delayed */
546	continue;	625	continue;
547	}	626	}
548	else	627	else
549	{	628	{
550	int res = ETP_FINISH (req);	629	int res = ETP_FINISH (req);
551	if (expect_false (res))	630	if (ecb_expect_false (res))
552	return res;	631	return res;
553	}	632	}
554		633
555	if (expect_false (maxreqs && !--maxreqs))	634	if (ecb_expect_false (maxreqs && !--maxreqs))
556	break;	635	break;
557		636
558	if (maxtime)	637	if (maxtime)
559	{	638	{
560	gettimeofday (&tv_now, 0);	639	gettimeofday (&tv_now, 0);
…		…
566		645
567	errno = EAGAIN;	646	errno = EAGAIN;
568	return -1;	647	return -1;
569	}	648	}
570		649
		650	static void
571	static void etp_cancel (ETP_REQ *req)	651	etp_cancel (ETP_REQ *req)
572	{	652	{
573	X_LOCK (wrklock);	653	req->cancelled = 1;
574	req->flags |= EIO_FLAG_CANCELLED;
575	X_UNLOCK (wrklock);
576		654
577	eio_grp_cancel (req);	655	eio_grp_cancel (req);
578	}	656	}
579		657
		658	static void
580	static void etp_submit (ETP_REQ *req)	659	etp_submit (ETP_REQ *req)
581	{	660	{
582	req->pri -= ETP_PRI_MIN;	661	req->pri -= ETP_PRI_MIN;
583		662
584	if (expect_false (req->pri < ETP_PRI_MIN - ETP_PRI_MIN)) req->pri = ETP_PRI_MIN - ETP_PRI_MIN;	663	if (ecb_expect_false (req->pri < ETP_PRI_MIN - ETP_PRI_MIN)) req->pri = ETP_PRI_MIN - ETP_PRI_MIN;
585	if (expect_false (req->pri > ETP_PRI_MAX - ETP_PRI_MIN)) req->pri = ETP_PRI_MAX - ETP_PRI_MIN;	664	if (ecb_expect_false (req->pri > ETP_PRI_MAX - ETP_PRI_MIN)) req->pri = ETP_PRI_MAX - ETP_PRI_MIN;
586		665
587	if (expect_false (req->type == EIO_GROUP))	666	if (ecb_expect_false (req->type == EIO_GROUP))
588	{	667	{
589	/* I hope this is worth it :/ */	668	/* I hope this is worth it :/ */
590	X_LOCK (reqlock);	669	X_LOCK (reqlock);
591	++nreqs;	670	++nreqs;
592	X_UNLOCK (reqlock);	671	X_UNLOCK (reqlock);
…		…
611		690
612	etp_maybe_start_thread ();	691	etp_maybe_start_thread ();
613	}	692	}
614	}	693	}
615		694
		695	static void ecb_cold
616	static void etp_set_max_poll_time (double nseconds)	696	etp_set_max_poll_time (double nseconds)
617	{	697	{
618	if (WORDACCESS_UNSAFE) X_LOCK (reslock);	698	if (WORDACCESS_UNSAFE) X_LOCK (reslock);
619	max_poll_time = nseconds * EIO_TICKS;	699	max_poll_time = nseconds * EIO_TICKS;
620	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);	700	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);
621	}	701	}
622		702
		703	static void ecb_cold
623	static void etp_set_max_poll_reqs (unsigned int maxreqs)	704	etp_set_max_poll_reqs (unsigned int maxreqs)
624	{	705	{
625	if (WORDACCESS_UNSAFE) X_LOCK (reslock);	706	if (WORDACCESS_UNSAFE) X_LOCK (reslock);
626	max_poll_reqs = maxreqs;	707	max_poll_reqs = maxreqs;
627	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);	708	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);
628	}	709	}
629		710
		711	static void ecb_cold
630	static void etp_set_max_idle (unsigned int nthreads)	712	etp_set_max_idle (unsigned int nthreads)
631	{	713	{
632	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);	714	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
633	max_idle = nthreads;	715	max_idle = nthreads;
634	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);	716	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
635	}	717	}
636		718
		719	static void ecb_cold
637	static void etp_set_idle_timeout (unsigned int seconds)	720	etp_set_idle_timeout (unsigned int seconds)
638	{	721	{
639	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);	722	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
640	idle_timeout = seconds;	723	idle_timeout = seconds;
641	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);	724	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
642	}	725	}
643		726
		727	static void ecb_cold
644	static void etp_set_min_parallel (unsigned int nthreads)	728	etp_set_min_parallel (unsigned int nthreads)
645	{	729	{
646	if (wanted < nthreads)	730	if (wanted < nthreads)
647	wanted = nthreads;	731	wanted = nthreads;
648	}	732	}
649		733
		734	static void ecb_cold
650	static void etp_set_max_parallel (unsigned int nthreads)	735	etp_set_max_parallel (unsigned int nthreads)
651	{	736	{
652	if (wanted > nthreads)	737	if (wanted > nthreads)
653	wanted = nthreads;	738	wanted = nthreads;
654		739
655	while (started > wanted)	740	while (started > wanted)
656	etp_end_thread ();	741	etp_end_thread ();
657	}	742	}
658		743
659	/*****************************************************************************/	744	/*****************************************************************************/
660		745
		746	static void
661	static void grp_try_feed (eio_req *grp)	747	grp_try_feed (eio_req *grp)
662	{	748	{
663	while (grp->size < grp->int2 && !EIO_CANCELLED (grp))	749	while (grp->size < grp->int2 && !EIO_CANCELLED (grp))
664	{	750	{
665	grp->flags &= ~EIO_FLAG_GROUPADD;	751	grp->flags &= ~EIO_FLAG_GROUPADD;
666		752
…		…
673	break;	759	break;
674	}	760	}
675	}	761	}
676	}	762	}
677		763
		764	static int
678	static int grp_dec (eio_req *grp)	765	grp_dec (eio_req *grp)
679	{	766	{
680	--grp->size;	767	--grp->size;
681		768
682	/* call feeder, if applicable */	769	/* call feeder, if applicable */
683	grp_try_feed (grp);	770	grp_try_feed (grp);
…		…
687	return eio_finish (grp);	774	return eio_finish (grp);
688	else	775	else
689	return 0;	776	return 0;
690	}	777	}
691		778
		779	static void
692	void eio_destroy (eio_req *req)	780	eio_destroy (eio_req *req)
693	{	781	{
694	if ((req)->flags & EIO_FLAG_PTR1_FREE) free (req->ptr1);	782	if ((req)->flags & EIO_FLAG_PTR1_FREE) free (req->ptr1);
695	if ((req)->flags & EIO_FLAG_PTR2_FREE) free (req->ptr2);	783	if ((req)->flags & EIO_FLAG_PTR2_FREE) free (req->ptr2);
696		784
697	EIO_DESTROY (req);	785	EIO_DESTROY (req);
698	}	786	}
699		787
		788	static int
700	static int eio_finish (eio_req *req)	789	eio_finish (eio_req *req)
701	{	790	{
702	int res = EIO_FINISH (req);	791	int res = EIO_FINISH (req);
703		792
704	if (req->grp)	793	if (req->grp)
705	{	794	{
…		…
713	if (grp->grp_first == req)	802	if (grp->grp_first == req)
714	grp->grp_first = req->grp_next;	803	grp->grp_first = req->grp_next;
715		804
716	res2 = grp_dec (grp);	805	res2 = grp_dec (grp);
717		806
718	if (!res && res2)	807	if (!res)
719	res = res2;	808	res = res2;
720	}	809	}
721		810
722	eio_destroy (req);	811	eio_destroy (req);
723		812
724	return res;	813	return res;
725	}	814	}
726		815
		816	void
727	void eio_grp_cancel (eio_req *grp)	817	eio_grp_cancel (eio_req *grp)
728	{	818	{
729	for (grp = grp->grp_first; grp; grp = grp->grp_next)	819	for (grp = grp->grp_first; grp; grp = grp->grp_next)
730	eio_cancel (grp);	820	eio_cancel (grp);
731	}	821	}
732		822
		823	void
733	void eio_cancel (eio_req *req)	824	eio_cancel (eio_req *req)
734	{	825	{
735	etp_cancel (req);	826	etp_cancel (req);
736	}	827	}
737		828
		829	void
738	void eio_submit (eio_req *req)	830	eio_submit (eio_req *req)
739	{	831	{
740	etp_submit (req);	832	etp_submit (req);
741	}	833	}
742		834
743	unsigned int eio_nreqs (void)	835	unsigned int
		836	eio_nreqs (void)
744	{	837	{
745	return etp_nreqs ();	838	return etp_nreqs ();
746	}	839	}
747		840
748	unsigned int eio_nready (void)	841	unsigned int
		842	eio_nready (void)
749	{	843	{
750	return etp_nready ();	844	return etp_nready ();
751	}	845	}
752		846
753	unsigned int eio_npending (void)	847	unsigned int
		848	eio_npending (void)
754	{	849	{
755	return etp_npending ();	850	return etp_npending ();
756	}	851	}
757		852
758	unsigned int eio_nthreads (void)	853	unsigned int ecb_cold
		854	eio_nthreads (void)
759	{	855	{
760	return etp_nthreads ();	856	return etp_nthreads ();
761	}	857	}
762		858
		859	void ecb_cold
763	void eio_set_max_poll_time (double nseconds)	860	eio_set_max_poll_time (double nseconds)
764	{	861	{
765	etp_set_max_poll_time (nseconds);	862	etp_set_max_poll_time (nseconds);
766	}	863	}
767		864
		865	void ecb_cold
768	void eio_set_max_poll_reqs (unsigned int maxreqs)	866	eio_set_max_poll_reqs (unsigned int maxreqs)
769	{	867	{
770	etp_set_max_poll_reqs (maxreqs);	868	etp_set_max_poll_reqs (maxreqs);
771	}	869	}
772		870
		871	void ecb_cold
773	void eio_set_max_idle (unsigned int nthreads)	872	eio_set_max_idle (unsigned int nthreads)
774	{	873	{
775	etp_set_max_idle (nthreads);	874	etp_set_max_idle (nthreads);
776	}	875	}
777		876
		877	void ecb_cold
778	void eio_set_idle_timeout (unsigned int seconds)	878	eio_set_idle_timeout (unsigned int seconds)
779	{	879	{
780	etp_set_idle_timeout (seconds);	880	etp_set_idle_timeout (seconds);
781	}	881	}
782		882
		883	void ecb_cold
783	void eio_set_min_parallel (unsigned int nthreads)	884	eio_set_min_parallel (unsigned int nthreads)
784	{	885	{
785	etp_set_min_parallel (nthreads);	886	etp_set_min_parallel (nthreads);
786	}	887	}
787		888
		889	void ecb_cold
788	void eio_set_max_parallel (unsigned int nthreads)	890	eio_set_max_parallel (unsigned int nthreads)
789	{	891	{
790	etp_set_max_parallel (nthreads);	892	etp_set_max_parallel (nthreads);
791	}	893	}
792		894
793	int eio_poll (void)	895	int eio_poll (void)
…		…
802	# undef pread	904	# undef pread
803	# undef pwrite	905	# undef pwrite
804	# define pread eio__pread	906	# define pread eio__pread
805	# define pwrite eio__pwrite	907	# define pwrite eio__pwrite
806		908
807	static ssize_t	909	static eio_ssize_t
808	eio__pread (int fd, void *buf, size_t count, off_t offset)	910	eio__pread (int fd, void *buf, size_t count, off_t offset)
809	{	911	{
810	ssize_t res;	912	eio_ssize_t res;
811	off_t ooffset;	913	off_t ooffset;
812		914
813	X_LOCK (preadwritelock);	915	X_LOCK (preadwritelock);
814	ooffset = lseek (fd, 0, SEEK_CUR);	916	ooffset = lseek (fd, 0, SEEK_CUR);
815	lseek (fd, offset, SEEK_SET);	917	lseek (fd, offset, SEEK_SET);
…		…
818	X_UNLOCK (preadwritelock);	920	X_UNLOCK (preadwritelock);
819		921
820	return res;	922	return res;
821	}	923	}
822		924
823	static ssize_t	925	static eio_ssize_t
824	eio__pwrite (int fd, void *buf, size_t count, off_t offset)	926	eio__pwrite (int fd, void *buf, size_t count, off_t offset)
825	{	927	{
826	ssize_t res;	928	eio_ssize_t res;
827	off_t ooffset;	929	off_t ooffset;
828		930
829	X_LOCK (preadwritelock);	931	X_LOCK (preadwritelock);
830	ooffset = lseek (fd, 0, SEEK_CUR);	932	ooffset = lseek (fd, 0, SEEK_CUR);
831	lseek (fd, offset, SEEK_SET);	933	lseek (fd, offset, SEEK_SET);
…		…
863	#ifndef HAVE_FUTIMES	965	#ifndef HAVE_FUTIMES
864		966
865	# undef futimes	967	# undef futimes
866	# define futimes(fd,times) eio__futimes (fd, times)	968	# define futimes(fd,times) eio__futimes (fd, times)
867		969
		970	static int
868	static int eio__futimes (int fd, const struct timeval tv[2])	971	eio__futimes (int fd, const struct timeval tv[2])
869	{	972	{
870	errno = ENOSYS;	973	errno = ENOSYS;
871	return -1;	974	return -1;
872	}	975	}
873		976
…		…
876	#if !HAVE_FDATASYNC	979	#if !HAVE_FDATASYNC
877	# undef fdatasync	980	# undef fdatasync
878	# define fdatasync(fd) fsync (fd)	981	# define fdatasync(fd) fsync (fd)
879	#endif	982	#endif
880		983
		984	static int
		985	eio__syncfs (int fd)
		986	{
		987	int res;
		988
		989	#if HAVE_SYS_SYNCFS
		990	res = (int)syscall (__NR_syncfs, (int)(fd));
		991	#else
		992	res = -1;
		993	errno = ENOSYS;
		994	#endif
		995
		996	if (res < 0 && errno == ENOSYS && fd >= 0)
		997	sync ();
		998
		999	return res;
		1000	}
		1001
881	/* sync_file_range always needs emulation */	1002	/* sync_file_range always needs emulation */
882	int	1003	static int
883	eio__sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags)	1004	eio__sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags)
884	{	1005	{
885	#if HAVE_SYNC_FILE_RANGE	1006	#if HAVE_SYNC_FILE_RANGE
886	int res;	1007	int res;
887		1008
…		…
904	/* even though we could play tricks with the flags, it's better to always	1025	/* even though we could play tricks with the flags, it's better to always
905	* call fdatasync, as that matches the expectation of its users best */	1026	* call fdatasync, as that matches the expectation of its users best */
906	return fdatasync (fd);	1027	return fdatasync (fd);
907	}	1028	}
908		1029
		1030	static int
		1031	eio__fallocate (int fd, int mode, off_t offset, size_t len)
		1032	{
		1033	#if HAVE_FALLOCATE
		1034	return fallocate (fd, mode, offset, len);
		1035	#else
		1036	errno = ENOSYS;
		1037	return -1;
		1038	#endif
		1039	}
		1040
909	#if !HAVE_READAHEAD	1041	#if !HAVE_READAHEAD
910	# undef readahead	1042	# undef readahead
911	# define readahead(fd,offset,count) eio__readahead (fd, offset, count, self)	1043	# define readahead(fd,offset,count) eio__readahead (fd, offset, count, self)
912		1044
913	static ssize_t	1045	static eio_ssize_t
914	eio__readahead (int fd, off_t offset, size_t count, etp_worker *self)	1046	eio__readahead (int fd, off_t offset, size_t count, etp_worker *self)
915	{	1047	{
916	size_t todo = count;	1048	size_t todo = count;
917	dBUF;	1049	dBUF;
918		1050
…		…
923	pread (fd, eio_buf, len, offset);	1055	pread (fd, eio_buf, len, offset);
924	offset += len;	1056	offset += len;
925	todo -= len;	1057	todo -= len;
926	}	1058	}
927		1059
		1060	FUBd;
		1061
928	errno = 0;	1062	errno = 0;
929	return count;	1063	return count;
930	}	1064	}
931		1065
932	#endif	1066	#endif
933		1067
934	/* sendfile always needs emulation */	1068	/* sendfile always needs emulation */
935	static ssize_t	1069	static eio_ssize_t
936	eio__sendfile (int ofd, int ifd, off_t offset, size_t count, etp_worker *self)	1070	eio__sendfile (int ofd, int ifd, off_t offset, size_t count)
937	{	1071	{
		1072	eio_ssize_t written = 0;
938	ssize_t res;	1073	eio_ssize_t res;
939		1074
940	if (!count)	1075	if (!count)
941	return 0;	1076	return 0;
942		1077
		1078	for (;;)
		1079	{
		1080	#ifdef __APPLE__
		1081	# undef HAVE_SENDFILE /* broken, as everything on os x */
		1082	#endif
943	#if HAVE_SENDFILE	1083	#if HAVE_SENDFILE
944	# if __linux	1084	# if __linux
		1085	off_t soffset = offset;
945	res = sendfile (ofd, ifd, &offset, count);	1086	res = sendfile (ofd, ifd, &soffset, count);
946		1087
947	# elif __FreeBSD__	1088	# elif __FreeBSD__
948	/*	1089	/*
949	* Of course, the freebsd sendfile is a dire hack with no thoughts	1090	* Of course, the freebsd sendfile is a dire hack with no thoughts
950	* wasted on making it similar to other I/O functions.	1091	* wasted on making it similar to other I/O functions.
951	*/	1092	*/
952	{
953	off_t sbytes;	1093	off_t sbytes;
954	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);	1094	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
955		1095
956	#if 0 /* according to the manpage, this is correct, but broken behaviour */	1096	#if 0 /* according to the manpage, this is correct, but broken behaviour */
957	/* freebsd' sendfile will return 0 on success */	1097	/* freebsd' sendfile will return 0 on success */
958	/* freebsd 8 documents it as only setting *sbytes on EINTR and EAGAIN, but */	1098	/* freebsd 8 documents it as only setting *sbytes on EINTR and EAGAIN, but */
959	/* not on e.g. EIO or EPIPE - sounds broken */	1099	/* not on e.g. EIO or EPIPE - sounds broken */
960	if ((res < 0 && (errno == EAGAIN || errno == EINTR) && sbytes) || res == 0)	1100	if ((res < 0 && (errno == EAGAIN || errno == EINTR) && sbytes) || res == 0)
961	res = sbytes;	1101	res = sbytes;
962	#endif	1102	#endif
963		1103
964	/* according to source inspection, this is correct, and useful behaviour */	1104	/* according to source inspection, this is correct, and useful behaviour */
965	if (sbytes)	1105	if (sbytes)
966	res = sbytes;	1106	res = sbytes;
967	}
968		1107
969	# elif defined (__APPLE__)	1108	# elif defined (__APPLE__)
970
971	{
972	off_t sbytes = count;	1109	off_t sbytes = count;
973	res = sendfile (ifd, ofd, offset, &sbytes, 0, 0);	1110	res = sendfile (ifd, ofd, offset, &sbytes, 0, 0);
974		1111
975	/* according to the manpage, sbytes is always valid */	1112	/* according to the manpage, sbytes is always valid */
976	if (sbytes)	1113	if (sbytes)
977	res = sbytes;	1114	res = sbytes;
978	}
979		1115
980	# elif __hpux	1116	# elif __hpux
981	res = sendfile (ofd, ifd, offset, count, 0, 0);	1117	res = sendfile (ofd, ifd, offset, count, 0, 0);
982		1118
983	# elif __solaris	1119	# elif __solaris
984	{
985	struct sendfilevec vec;	1120	struct sendfilevec vec;
986	size_t sbytes;	1121	size_t sbytes;
987		1122
988	vec.sfv_fd = ifd;	1123	vec.sfv_fd = ifd;
989	vec.sfv_flag = 0;	1124	vec.sfv_flag = 0;
990	vec.sfv_off = offset;	1125	vec.sfv_off = offset;
991	vec.sfv_len = count;	1126	vec.sfv_len = count;
992		1127
993	res = sendfilev (ofd, &vec, 1, &sbytes);	1128	res = sendfilev (ofd, &vec, 1, &sbytes);
994		1129
995	if (res < 0 && sbytes)	1130	if (res < 0 && sbytes)
996	res = sbytes;	1131	res = sbytes;
997	}
998		1132
999	# endif	1133	# endif
1000		1134
1001	#elif defined (_WIN32)	1135	#elif defined (_WIN32) && 0
1002
1003	/* does not work, just for documentation of what would need to be done */	1136	/* does not work, just for documentation of what would need to be done */
1004	{	1137	/* actually, cannot be done like this, as TransmitFile changes the file offset, */
		1138	/* libeio guarantees that the file offset does not change, and windows */
		1139	/* has no way to get an independent handle to the same file description */
1005	HANDLE h = TO_SOCKET (ifd);	1140	HANDLE h = TO_SOCKET (ifd);
1006	SetFilePointer (h, offset, 0, FILE_BEGIN);	1141	SetFilePointer (h, offset, 0, FILE_BEGIN);
1007	res = TransmitFile (TO_SOCKET (ofd), h, count, 0, 0, 0, 0);	1142	res = TransmitFile (TO_SOCKET (ofd), h, count, 0, 0, 0, 0);
1008	}
1009		1143
1010	#else	1144	#else
1011	res = -1;	1145	res = -1;
1012	errno = ENOSYS;	1146	errno = ENOSYS;
1013	#endif	1147	#endif
1014		1148
		1149	/* we assume sendfile can copy at least 128mb in one go */
		1150	if (res <= 128 * 1024 * 1024)
		1151	{
		1152	if (res > 0)
		1153	written += res;
		1154
		1155	if (written)
		1156	return written;
		1157
		1158	break;
		1159	}
		1160	else
		1161	{
		1162	/* if we requested more, then probably the kernel was lazy */
		1163	written += res;
		1164	offset += res;
		1165	count -= res;
		1166
		1167	if (!count)
		1168	return written;
		1169	}
		1170	}
		1171
1015	if (res < 0	1172	if (res < 0
1016	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK	1173	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
1017	/* BSDs */	1174	/* BSDs */
1018	#ifdef ENOTSUP /* sigh, if the steenking pile called openbsd would only try to at least compile posix code... */	1175	#ifdef ENOTSUP /* sigh, if the steenking pile called openbsd would only try to at least compile posix code... */
1019	|| errno == ENOTSUP	1176	|| errno == ENOTSUP
1020	#endif	1177	#endif
		1178	#ifdef EOPNOTSUPP /* windows */
1021	|| errno == EOPNOTSUPP /* BSDs */	1179	|| errno == EOPNOTSUPP /* BSDs */
		1180	#endif
1022	#if __solaris	1181	#if __solaris
1023	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE	1182	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
1024	#endif	1183	#endif
1025	)	1184	)
1026	)	1185	)
…		…
1030		1189
1031	res = 0;	1190	res = 0;
1032		1191
1033	while (count)	1192	while (count)
1034	{	1193	{
1035	ssize_t cnt;	1194	eio_ssize_t cnt;
1036		1195
1037	cnt = pread (ifd, eio_buf, count > EIO_BUFSIZE ? EIO_BUFSIZE : count, offset);	1196	cnt = pread (ifd, eio_buf, count > EIO_BUFSIZE ? EIO_BUFSIZE : count, offset);
1038		1197
1039	if (cnt <= 0)	1198	if (cnt <= 0)
1040	{	1199	{
…		…
1052		1211
1053	offset += cnt;	1212	offset += cnt;
1054	res += cnt;	1213	res += cnt;
1055	count -= cnt;	1214	count -= cnt;
1056	}	1215	}
		1216
		1217	FUBd;
1057	}	1218	}
1058		1219
1059	return res;	1220	return res;
		1221	}
		1222
		1223	#ifdef PAGESIZE
		1224	# define eio_pagesize() PAGESIZE
		1225	#else
		1226	static intptr_t
		1227	eio_pagesize (void)
		1228	{
		1229	static intptr_t page;
		1230
		1231	if (!page)
		1232	page = sysconf (_SC_PAGESIZE);
		1233
		1234	return page;
		1235	}
		1236	#endif
		1237
		1238	static void
		1239	eio_page_align (void **addr, size_t *length)
		1240	{
		1241	intptr_t mask = eio_pagesize () - 1;
		1242
		1243	/* round down addr */
		1244	intptr_t adj = mask & (intptr_t)*addr;
		1245
		1246	*addr = (void *)((intptr_t)*addr - adj);
		1247	*length += adj;
		1248
		1249	/* round up length */
		1250	*length = (*length + mask) & ~mask;
		1251	}
		1252
		1253	#if !_POSIX_MEMLOCK
		1254	# define eio__mlockall(a) EIO_ENOSYS ()
		1255	#else
		1256
		1257	static int
		1258	eio__mlockall (int flags)
		1259	{
		1260	#if __GLIBC__ == 2 && __GLIBC_MINOR__ <= 7
		1261	extern int mallopt (int, int);
		1262	mallopt (-6, 238); /* http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=473812 */
		1263	#endif
		1264
		1265	if (EIO_MCL_CURRENT != MCL_CURRENT
		1266	|| EIO_MCL_FUTURE != MCL_FUTURE)
		1267	{
		1268	flags = 0
		1269	| (flags & EIO_MCL_CURRENT ? MCL_CURRENT : 0)
		1270	| (flags & EIO_MCL_FUTURE ? MCL_FUTURE : 0);
		1271	}
		1272
		1273	return mlockall (flags);
		1274	}
		1275	#endif
		1276
		1277	#if !_POSIX_MEMLOCK_RANGE
		1278	# define eio__mlock(a,b) EIO_ENOSYS ()
		1279	#else
		1280
		1281	static int
		1282	eio__mlock (void *addr, size_t length)
		1283	{
		1284	eio_page_align (&addr, &length);
		1285
		1286	return mlock (addr, length);
		1287	}
		1288
		1289	#endif
		1290
		1291	#if !(_POSIX_MAPPED_FILES && _POSIX_SYNCHRONIZED_IO)
		1292	# define eio__msync(a,b,c) EIO_ENOSYS ()
		1293	#else
		1294
		1295	static int
		1296	eio__msync (void *mem, size_t len, int flags)
		1297	{
		1298	eio_page_align (&mem, &len);
		1299
		1300	if (EIO_MS_ASYNC != MS_SYNC
		1301	|| EIO_MS_INVALIDATE != MS_INVALIDATE
		1302	|| EIO_MS_SYNC != MS_SYNC)
		1303	{
		1304	flags = 0
		1305	| (flags & EIO_MS_ASYNC ? MS_ASYNC : 0)
		1306	| (flags & EIO_MS_INVALIDATE ? MS_INVALIDATE : 0)
		1307	| (flags & EIO_MS_SYNC ? MS_SYNC : 0);
		1308	}
		1309
		1310	return msync (mem, len, flags);
		1311	}
		1312
		1313	#endif
		1314
		1315	static int
		1316	eio__mtouch (eio_req *req)
		1317	{
		1318	void *mem = req->ptr2;
		1319	size_t len = req->size;
		1320	int flags = req->int1;
		1321
		1322	eio_page_align (&mem, &len);
		1323
		1324	{
		1325	intptr_t addr = (intptr_t)mem;
		1326	intptr_t end = addr + len;
		1327	intptr_t page = eio_pagesize ();
		1328
		1329	if (addr < end)
		1330	if (flags & EIO_MT_MODIFY) /* modify */
		1331	do { *((volatile sig_atomic_t *)addr) |= 0; } while ((addr += page) < len && !EIO_CANCELLED (req));
		1332	else
		1333	do { *((volatile sig_atomic_t *)addr) ; } while ((addr += page) < len && !EIO_CANCELLED (req));
		1334	}
		1335
		1336	return 0;
		1337	}
		1338
		1339	/*****************************************************************************/
		1340	/* requests implemented outside eio_execute, because they are so large */
		1341
		1342	static void
		1343	eio__realpath (eio_req *req, etp_worker *self)
		1344	{
		1345	char *rel = req->ptr1;
		1346	char *res;
		1347	char *tmp1, *tmp2;
		1348	#if SYMLOOP_MAX > 32
		1349	int symlinks = SYMLOOP_MAX;
		1350	#else
		1351	int symlinks = 32;
		1352	#endif
		1353
		1354	req->result = -1;
		1355
		1356	errno = EINVAL;
		1357	if (!rel)
		1358	return;
		1359
		1360	errno = ENOENT;
		1361	if (!*rel)
		1362	return;
		1363
		1364	if (!req->ptr2)
		1365	{
		1366	X_LOCK (wrklock);
		1367	req->flags |= EIO_FLAG_PTR2_FREE;
		1368	X_UNLOCK (wrklock);
		1369	req->ptr2 = malloc (PATH_MAX * 3);
		1370
		1371	errno = ENOMEM;
		1372	if (!req->ptr2)
		1373	return;
		1374	}
		1375
		1376	res = req->ptr2;
		1377	tmp1 = res + PATH_MAX;
		1378	tmp2 = tmp1 + PATH_MAX;
		1379
		1380	#if 0 /* disabled, the musl way to do things is just too racy */
		1381	#if __linux && defined(O_NONBLOCK) && defined(O_NOATIME)
		1382	/* on linux we may be able to ask the kernel */
		1383	{
		1384	int fd = open (rel, O_RDONLY | O_NONBLOCK | O_NOCTTY | O_NOATIME);
		1385
		1386	if (fd >= 0)
		1387	{
		1388	sprintf (tmp1, "/proc/self/fd/%d", fd);
		1389	req->result = readlink (tmp1, res, PATH_MAX);
		1390	close (fd);
		1391
		1392	/* here we should probably stat the open file and the disk file, to make sure they still match */
		1393
		1394	if (req->result > 0)
		1395	goto done;
		1396	}
		1397	else if (errno == ELOOP || errno == ENAMETOOLONG || errno == ENOENT || errno == ENOTDIR || errno == EIO)
		1398	return;
		1399	}
		1400	#endif
		1401	#endif
		1402
		1403	if (*rel != '/')
		1404	{
		1405	if (!getcwd (res, PATH_MAX))
		1406	return;
		1407
		1408	if (res [1]) /* only use if not / */
		1409	res += strlen (res);
		1410	}
		1411
		1412	while (*rel)
		1413	{
		1414	eio_ssize_t len, linklen;
		1415	char *beg = rel;
		1416
		1417	while (*rel && *rel != '/')
		1418	++rel;
		1419
		1420	len = rel - beg;
		1421
		1422	if (!len) /* skip slashes */
		1423	{
		1424	++rel;
		1425	continue;
		1426	}
		1427
		1428	if (beg [0] == '.')
		1429	{
		1430	if (len == 1)
		1431	continue; /* . - nop */
		1432
		1433	if (beg [1] == '.' && len == 2)
		1434	{
		1435	/* .. - back up one component, if possible */
		1436
		1437	while (res != req->ptr2)
		1438	if (*--res == '/')
		1439	break;
		1440
		1441	continue;
		1442	}
		1443	}
		1444
		1445	errno = ENAMETOOLONG;
		1446	if (res + 1 + len + 1 >= tmp1)
		1447	return;
		1448
		1449	/* copy one component */
		1450	*res = '/';
		1451	memcpy (res + 1, beg, len);
		1452
		1453	/* zero-terminate, for readlink */
		1454	res [len + 1] = 0;
		1455
		1456	/* now check if it's a symlink */
		1457	linklen = readlink (req->ptr2, tmp1, PATH_MAX);
		1458
		1459	if (linklen < 0)
		1460	{
		1461	if (errno != EINVAL)
		1462	return;
		1463
		1464	/* it's a normal directory. hopefully */
		1465	res += len + 1;
		1466	}
		1467	else
		1468	{
		1469	/* yay, it was a symlink - build new path in tmp2 */
		1470	int rellen = strlen (rel);
		1471
		1472	errno = ENAMETOOLONG;
		1473	if (linklen + 1 + rellen >= PATH_MAX)
		1474	return;
		1475
		1476	errno = ELOOP;
		1477	if (!--symlinks)
		1478	return;
		1479
		1480	if (*tmp1 == '/')
		1481	res = req->ptr2; /* symlink resolves to an absolute path */
		1482
		1483	/* we need to be careful, as rel might point into tmp2 already */
		1484	memmove (tmp2 + linklen + 1, rel, rellen + 1);
		1485	tmp2 [linklen] = '/';
		1486	memcpy (tmp2, tmp1, linklen);
		1487
		1488	rel = tmp2;
		1489	}
		1490	}
		1491
		1492	/* special case for the lone root path */
		1493	if (res == req->ptr2)
		1494	*res++ = '/';
		1495
		1496	req->result = res - (char *)req->ptr2;
		1497
		1498	done:
		1499	req->ptr2 = realloc (req->ptr2, req->result); /* trade time for space savings */
1060	}	1500	}
1061		1501
1062	static signed char	1502	static signed char
1063	eio_dent_cmp (const eio_dirent *a, const eio_dirent *b)	1503	eio_dent_cmp (const eio_dirent *a, const eio_dirent *b)
1064	{	1504	{
1065	return a->score - b->score ? a->score - b->score /* works because our signed char is always 0..100 */	1505	return a->score - b->score ? a->score - b->score /* works because our signed char is always 0..100 */
1066	: a->inode < b->inode ? -1 : a->inode > b->inode ? 1 : 0;	1506	: a->inode < b->inode ? -1
		1507	: a->inode > b->inode ? 1
		1508	: 0;
1067	}	1509	}
1068		1510
1069	#define EIO_DENT_CMP(i,op,j) eio_dent_cmp (&i, &j) op 0	1511	#define EIO_DENT_CMP(i,op,j) eio_dent_cmp (&i, &j) op 0
1070		1512
1071	#define EIO_SORT_CUTOFF 30 /* quite high, but performs well on many filesystems */	1513	#define EIO_SORT_CUTOFF 30 /* quite high, but performs well on many filesystems */
1072	#define EIO_SORT_FAST 60 /* when to only use insertion sort */	1514	#define EIO_SORT_FAST 60 /* when to only use insertion sort */
1073		1515
1074	static void	1516	static void
1075	eio_dent_radix_sort (eio_dirent *dents, int size, signed char score_bits, ino_t inode_bits)	1517	eio_dent_radix_sort (eio_dirent *dents, int size, signed char score_bits, eio_ino_t inode_bits)
1076	{	1518	{
1077	unsigned char bits [9 + sizeof (ino_t) * 8];	1519	unsigned char bits [9 + sizeof (eio_ino_t) * 8];
1078	unsigned char *bit = bits;	1520	unsigned char *bit = bits;
1079		1521
1080	assert (CHAR_BIT == 8);	1522	assert (CHAR_BIT == 8);
1081	assert (sizeof (eio_dirent) * 8 < 256);	1523	assert (sizeof (eio_dirent) * 8 < 256);
1082	assert (offsetof (eio_dirent, inode)); /* we use 0 as sentinel */	1524	assert (offsetof (eio_dirent, inode)); /* we use bit #0 as sentinel */
1083	assert (offsetof (eio_dirent, score)); /* we use 0 as sentinel */	1525	assert (offsetof (eio_dirent, score)); /* we use bit #0 as sentinel */
1084		1526
1085	if (size <= EIO_SORT_FAST)	1527	if (size <= EIO_SORT_FAST)
1086	return;	1528	return;
1087		1529
1088	/* first prepare an array of bits to test in our radix sort */	1530	/* first prepare an array of bits to test in our radix sort */
1089	/* try to take endianness into account, as well as differences in ino_t sizes */	1531	/* try to take endianness into account, as well as differences in eio_ino_t sizes */
1090	/* inode_bits must contain all inodes ORed together */	1532	/* inode_bits must contain all inodes ORed together */
1091	/* which is used to skip bits that are 0 everywhere, which is very common */	1533	/* which is used to skip bits that are 0 everywhere, which is very common */
1092	{	1534	{
1093	ino_t endianness;	1535	eio_ino_t endianness;
1094	int i, j;	1536	int i, j;
1095		1537
1096	/* we store the byte offset of byte n into byte n of "endianness" */	1538	/* we store the byte offset of byte n into byte n of "endianness" */
1097	for (i = 0; i < sizeof (ino_t); ++i)	1539	for (i = 0; i < sizeof (eio_ino_t); ++i)
1098	((unsigned char *)&endianness)[i] = i;	1540	((unsigned char *)&endianness)[i] = i;
1099		1541
1100	*bit++ = 0;	1542	*bit++ = 0;
1101		1543
1102	for (i = 0; i < sizeof (ino_t); ++i)	1544	for (i = 0; i < sizeof (eio_ino_t); ++i)
1103	{	1545	{
1104	/* shifting off the byte offsets out of "endianness" */	1546	/* shifting off the byte offsets out of "endianness" */
1105	int offs = (offsetof (eio_dirent, inode) + (endianness & 0xff)) * 8;	1547	int offs = (offsetof (eio_dirent, inode) + (endianness & 0xff)) * 8;
1106	endianness >>= 8;	1548	endianness >>= 8;
1107		1549
1108	for (j = 0; j < 8; ++j)	1550	for (j = 0; j < 8; ++j)
1109	if (inode_bits & (((ino_t)1) << (i * 8 + j)))	1551	if (inode_bits & (((eio_ino_t)1) << (i * 8 + j)))
1110	*bit++ = offs + j;	1552	*bit++ = offs + j;
1111	}	1553	}
1112		1554
1113	for (j = 0; j < 8; ++j)	1555	for (j = 0; j < 8; ++j)
1114	if (score_bits & (1 << j))	1556	if (score_bits & (1 << j))
1115	*bit++ = offsetof (eio_dirent, score) * 8 + j;	1557	*bit++ = offsetof (eio_dirent, score) * 8 + j;
1116	}	1558	}
1117		1559
1118	/* now actually do the sorting (a variant of MSD radix sort) */	1560	/* now actually do the sorting (a variant of MSD radix sort) */
1119	{	1561	{
1120	eio_dirent *base_stk [9 + sizeof (ino_t) * 8], *base;	1562	eio_dirent *base_stk [9 + sizeof (eio_ino_t) * 8], *base;
1121	eio_dirent *end_stk [9 + sizeof (ino_t) * 8], *end;	1563	eio_dirent *end_stk [9 + sizeof (eio_ino_t) * 8], *end;
1122	unsigned char *bit_stk [9 + sizeof (ino_t) * 8];	1564	unsigned char *bit_stk [9 + sizeof (eio_ino_t) * 8];
1123	int stk_idx = 0;	1565	int stk_idx = 0;
1124		1566
1125	base_stk [stk_idx] = dents;	1567	base_stk [stk_idx] = dents;
1126	end_stk [stk_idx] = dents + size;	1568	end_stk [stk_idx] = dents + size;
1127	bit_stk [stk_idx] = bit - 1;	1569	bit_stk [stk_idx] = bit - 1;
…		…
1206	}	1648	}
1207	}	1649	}
1208	}	1650	}
1209		1651
1210	static void	1652	static void
1211	eio_dent_sort (eio_dirent *dents, int size, signed char score_bits, ino_t inode_bits)	1653	eio_dent_sort (eio_dirent *dents, int size, signed char score_bits, eio_ino_t inode_bits)
1212	{	1654	{
1213	if (size <= 1)	1655	if (size <= 1)
1214	return; /* our insertion sort relies on size > 0 */	1656	return; /* our insertion sort relies on size > 0 */
1215		1657
1216	/* first we use a radix sort, but only for dirs >= EIO_SORT_FAST */	1658	/* first we use a radix sort, but only for dirs >= EIO_SORT_FAST */
…		…
1224		1666
1225	/* read a full directory */	1667	/* read a full directory */
1226	static void	1668	static void
1227	eio__scandir (eio_req *req, etp_worker *self)	1669	eio__scandir (eio_req *req, etp_worker *self)
1228	{	1670	{
1229	DIR *dirp;
1230	EIO_STRUCT_DIRENT *entp;
1231	char *name, *names;	1671	char *name, *names;
1232	int namesalloc = 4096;	1672	int namesalloc = 4096 - sizeof (void *) * 4;
1233	int namesoffs = 0;	1673	int namesoffs = 0;
1234	int flags = req->int1;	1674	int flags = req->int1;
1235	eio_dirent *dents = 0;	1675	eio_dirent *dents = 0;
1236	int dentalloc = 128;	1676	int dentalloc = 128;
1237	int dentoffs = 0;	1677	int dentoffs = 0;
1238	ino_t inode_bits = 0;	1678	eio_ino_t inode_bits = 0;
		1679	#ifdef _WIN32
		1680	HANDLE dirp;
		1681	WIN32_FIND_DATA entp;
		1682	#else
		1683	DIR *dirp;
		1684	EIO_STRUCT_DIRENT *entp;
		1685	#endif
1239		1686
1240	req->result = -1;	1687	req->result = -1;
1241		1688
1242	if (!(flags & EIO_READDIR_DENTS))	1689	if (!(flags & EIO_READDIR_DENTS))
1243	flags &= ~(EIO_READDIR_DIRS_FIRST | EIO_READDIR_STAT_ORDER);	1690	flags &= ~(EIO_READDIR_DIRS_FIRST | EIO_READDIR_STAT_ORDER);
1244		1691
1245	X_LOCK (wrklock);	1692	#ifdef _WIN32
1246	/* the corresponding closedir is in ETP_WORKER_CLEAR */	1693	{
		1694	int len = strlen ((const char *)req->ptr1);
		1695	char *path = malloc (MAX_PATH);
		1696	const char *fmt;
		1697
		1698	if (!len)
		1699	fmt = "./*";
		1700	else if (((const char *)req->ptr1)[len - 1] == '/' || ((const char *)req->ptr1)[len - 1] == '\\')
		1701	fmt = "%s*";
		1702	else
		1703	fmt = "%s/*";
		1704
		1705	_snprintf (path, MAX_PATH, fmt, (const char *)req->ptr1);
		1706	dirp = FindFirstFile (path, &entp);
		1707	free (path);
		1708
		1709	if (dirp == INVALID_HANDLE_VALUE)
		1710	{
		1711	dirp = 0;
		1712
		1713	/* should steal _dosmaperr */
		1714	switch (GetLastError ())
		1715	{
		1716	case ERROR_FILE_NOT_FOUND:
		1717	req->result = 0;
		1718	break;
		1719
		1720	case ERROR_INVALID_NAME:
		1721	case ERROR_PATH_NOT_FOUND:
		1722	case ERROR_NO_MORE_FILES:
		1723	errno = ENOENT;
		1724	break;
		1725
		1726	case ERROR_NOT_ENOUGH_MEMORY:
		1727	errno = ENOMEM;
		1728	break;
		1729
		1730	default:
		1731	errno = EINVAL;
		1732	break;
		1733	}
		1734	}
		1735	}
		1736	#else
1247	self->dirp = dirp = opendir (req->ptr1);	1737	dirp = opendir (req->ptr1);
		1738	#endif
		1739
		1740	if (req->flags & EIO_FLAG_PTR1_FREE)
		1741	free (req->ptr1);
		1742
1248	req->flags |= EIO_FLAG_PTR1_FREE | EIO_FLAG_PTR2_FREE;	1743	req->flags |= EIO_FLAG_PTR1_FREE | EIO_FLAG_PTR2_FREE;
1249	req->ptr1 = dents = flags ? malloc (dentalloc * sizeof (eio_dirent)) : 0;	1744	req->ptr1 = dents = flags ? malloc (dentalloc * sizeof (eio_dirent)) : 0;
1250	req->ptr2 = names = malloc (namesalloc);	1745	req->ptr2 = names = malloc (namesalloc);
1251	X_UNLOCK (wrklock);
1252		1746
1253	if (dirp && names && (!flags || dents))	1747	if (dirp && names && (!flags || dents))
1254	for (;;)	1748	for (;;)
1255	{	1749	{
		1750	int done;
		1751
		1752	#ifdef _WIN32
		1753	done = !dirp;
		1754	#else
1256	errno = 0;	1755	errno = 0;
1257	entp = readdir (dirp);	1756	entp = readdir (dirp);
		1757	done = !entp;
		1758	#endif
1258		1759
1259	if (!entp)	1760	if (done)
1260	{	1761	{
		1762	#ifndef _WIN32
		1763	int old_errno = errno;
		1764	closedir (dirp);
		1765	errno = old_errno;
		1766
1261	if (errno)	1767	if (errno)
1262	break;	1768	break;
		1769	#endif
1263		1770
1264	/* sort etc. */	1771	/* sort etc. */
1265	req->int1 = flags;	1772	req->int1 = flags;
1266	req->result = dentoffs;	1773	req->result = dentoffs;
1267		1774
1268	if (flags & EIO_READDIR_STAT_ORDER)	1775	if (flags & EIO_READDIR_STAT_ORDER)
1269	eio_dent_sort (dents, dentoffs, 0, inode_bits); /* sort by inode exclusively */	1776	eio_dent_sort (dents, dentoffs, flags & EIO_READDIR_DIRS_FIRST ? 7 : 0, inode_bits);
1270	else if (flags & EIO_READDIR_DIRS_FIRST)	1777	else if (flags & EIO_READDIR_DIRS_FIRST)
1271	if (flags & EIO_READDIR_FOUND_UNKNOWN)	1778	if (flags & EIO_READDIR_FOUND_UNKNOWN)
1272	eio_dent_sort (dents, dentoffs, 7, inode_bits); /* sort by score and inode */	1779	eio_dent_sort (dents, dentoffs, 7, inode_bits); /* sort by score and inode */
1273	else	1780	else
1274	{	1781	{
…		…
1276	eio_dirent *oth = dents + dentoffs;	1783	eio_dirent *oth = dents + dentoffs;
1277	eio_dirent *dir = dents;	1784	eio_dirent *dir = dents;
1278		1785
1279	/* now partition dirs to the front, and non-dirs to the back */	1786	/* now partition dirs to the front, and non-dirs to the back */
1280	/* by walking from both sides and swapping if necessary */	1787	/* by walking from both sides and swapping if necessary */
1281	/* also clear score, so it doesn't influence sorting */
1282	while (oth > dir)	1788	while (oth > dir)
1283	{	1789	{
1284	if (dir->type == EIO_DT_DIR)	1790	if (dir->type == EIO_DT_DIR)
1285	++dir;	1791	++dir;
1286	else if ((--oth)->type == EIO_DT_DIR)	1792	else if ((--oth)->type == EIO_DT_DIR)
…		…
1289		1795
1290	++dir;	1796	++dir;
1291	}	1797	}
1292	}	1798	}
1293		1799
1294	/* now sort the dirs only */	1800	/* now sort the dirs only (dirs all have the same score) */
1295	eio_dent_sort (dents, dir - dents, 0, inode_bits);	1801	eio_dent_sort (dents, dir - dents, 0, inode_bits);
1296	}	1802	}
1297		1803
1298	break;	1804	break;
1299	}	1805	}
1300		1806
1301	/* now add the entry to our list(s) */	1807	/* now add the entry to our list(s) */
1302	name = entp->d_name;	1808	name = D_NAME (entp);
1303		1809
1304	/* skip . and .. entries */	1810	/* skip . and .. entries */
1305	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))	1811	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1306	{	1812	{
1307	int len = D_NAMLEN (entp) + 1;	1813	int len = D_NAMLEN (entp) + 1;
1308		1814
1309	while (expect_false (namesoffs + len > namesalloc))	1815	while (ecb_expect_false (namesoffs + len > namesalloc))
1310	{	1816	{
1311	namesalloc *= 2;	1817	namesalloc *= 2;
1312	X_LOCK (wrklock);
1313	req->ptr2 = names = realloc (names, namesalloc);	1818	req->ptr2 = names = realloc (names, namesalloc);
1314	X_UNLOCK (wrklock);
1315		1819
1316	if (!names)	1820	if (!names)
1317	break;	1821	break;
1318	}	1822	}
1319		1823
…		…
1321		1825
1322	if (dents)	1826	if (dents)
1323	{	1827	{
1324	struct eio_dirent *ent;	1828	struct eio_dirent *ent;
1325		1829
1326	if (expect_false (dentoffs == dentalloc))	1830	if (ecb_expect_false (dentoffs == dentalloc))
1327	{	1831	{
1328	dentalloc *= 2;	1832	dentalloc *= 2;
1329	X_LOCK (wrklock);
1330	req->ptr1 = dents = realloc (dents, dentalloc * sizeof (eio_dirent));	1833	req->ptr1 = dents = realloc (dents, dentalloc * sizeof (eio_dirent));
1331	X_UNLOCK (wrklock);
1332		1834
1333	if (!dents)	1835	if (!dents)
1334	break;	1836	break;
1335	}	1837	}
1336		1838
…		…
1416	if (EIO_CANCELLED (req))	1918	if (EIO_CANCELLED (req))
1417	{	1919	{
1418	errno = ECANCELED;	1920	errno = ECANCELED;
1419	break;	1921	break;
1420	}	1922	}
		1923
		1924	#ifdef _WIN32
		1925	if (!FindNextFile (dirp, &entp))
		1926	{
		1927	FindClose (dirp);
		1928	dirp = 0;
		1929	}
		1930	#endif
1421	}	1931	}
1422	}
1423
1424	#ifdef PAGESIZE
1425	# define eio_pagesize() PAGESIZE
1426	#else
1427	static intptr_t
1428	eio_pagesize (void)
1429	{
1430	static intptr_t page;
1431
1432	if (!page)
1433	page = sysconf (_SC_PAGESIZE);
1434
1435	return page;
1436	}
1437	#endif
1438
1439	static void
1440	eio_page_align (void **addr, size_t *length)
1441	{
1442	intptr_t mask = eio_pagesize () - 1;
1443
1444	/* round down addr */
1445	intptr_t adj = mask & (intptr_t)*addr;
1446
1447	*addr = (void *)((intptr_t)*addr - adj);
1448	*length += adj;
1449
1450	/* round up length */
1451	*length = (*length + mask) & ~mask;
1452	}
1453
1454	#if !_POSIX_MEMLOCK
1455	# define eio__mlockall(a) ((errno = ENOSYS), -1)
1456	#else
1457
1458	static int
1459	eio__mlockall (int flags)
1460	{
1461	#if __GLIBC__ == 2 && __GLIBC_MINOR__ <= 7
1462	extern int mallopt (int, int);
1463	mallopt (-6, 238); /* http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=473812 */
1464	#endif
1465
1466	if (EIO_MCL_CURRENT != MCL_CURRENT
1467	|| EIO_MCL_FUTURE != MCL_FUTURE)
1468	{
1469	flags = 0
1470	| (flags & EIO_MCL_CURRENT ? MCL_CURRENT : 0)
1471	| (flags & EIO_MCL_FUTURE ? MCL_FUTURE : 0);
1472	}
1473
1474	return mlockall (flags);
1475	}
1476	#endif
1477
1478	#if !_POSIX_MEMLOCK_RANGE
1479	# define eio__mlock(a,b) ((errno = ENOSYS), -1)
1480	#else
1481
1482	static int
1483	eio__mlock (void *addr, size_t length)
1484	{
1485	eio_page_align (&addr, &length);
1486
1487	return mlock (addr, length);
1488	}
1489
1490	#endif
1491
1492	#if !(_POSIX_MAPPED_FILES && _POSIX_SYNCHRONIZED_IO)
1493	# define eio__msync(a,b,c) ((errno = ENOSYS), -1)
1494	#else
1495
1496	int
1497	eio__msync (void *mem, size_t len, int flags)
1498	{
1499	eio_page_align (&mem, &len);
1500
1501	if (EIO_MS_ASYNC != MS_SYNC
1502	|| EIO_MS_INVALIDATE != MS_INVALIDATE
1503	|| EIO_MS_SYNC != MS_SYNC)
1504	{
1505	flags = 0
1506	| (flags & EIO_MS_ASYNC ? MS_ASYNC : 0)
1507	| (flags & EIO_MS_INVALIDATE ? MS_INVALIDATE : 0)
1508	| (flags & EIO_MS_SYNC ? MS_SYNC : 0);
1509	}
1510
1511	return msync (mem, len, flags);
1512	}
1513
1514	#endif
1515
1516	int
1517	eio__mtouch (void *mem, size_t len, int flags)
1518	{
1519	eio_page_align (&mem, &len);
1520
1521	{
1522	intptr_t addr = (intptr_t)mem;
1523	intptr_t end = addr + len;
1524	intptr_t page = eio_pagesize ();
1525
1526	if (addr < end)
1527	if (flags & EIO_MT_MODIFY) /* modify */
1528	do { *((volatile sig_atomic_t *)addr) |= 0; } while ((addr += page) < len);
1529	else
1530	do { *((volatile sig_atomic_t *)addr) ; } while ((addr += page) < len);
1531	}
1532
1533	return 0;
1534	}	1932	}
1535		1933
1536	/*****************************************************************************/	1934	/*****************************************************************************/
1537		1935
1538	#define ALLOC(len) \	1936	#define ALLOC(len) \
…		…
1554	{	1952	{
1555	ETP_REQ *req;	1953	ETP_REQ *req;
1556	struct timespec ts;	1954	struct timespec ts;
1557	etp_worker *self = (etp_worker *)thr_arg;	1955	etp_worker *self = (etp_worker *)thr_arg;
1558		1956
		1957	#if HAVE_PRCTL_SET_NAME
		1958	prctl (PR_SET_NAME, (unsigned long)"eio_thread", 0, 0, 0);
		1959	#endif
		1960
1559	/* try to distribute timeouts somewhat randomly */	1961	/* try to distribute timeouts somewhat evenly */
1560	ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL);	1962	ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL);
1561		1963
1562	for (;;)	1964	for (;;)
1563	{	1965	{
		1966	ts.tv_sec = 0;
		1967
1564	X_LOCK (reqlock);	1968	X_LOCK (reqlock);
1565		1969
1566	for (;;)	1970	for (;;)
1567	{	1971	{
1568	self->req = req = reqq_shift (&req_queue);	1972	self->req = req = reqq_shift (&req_queue);
1569		1973
1570	if (req)	1974	if (req)
1571	break;	1975	break;
1572		1976
		1977	if (ts.tv_sec == 1) /* no request, but timeout detected, let's quit */
		1978	{
		1979	X_UNLOCK (reqlock);
		1980	X_LOCK (wrklock);
		1981	--started;
		1982	X_UNLOCK (wrklock);
		1983	goto quit;
		1984	}
		1985
1573	++idle;	1986	++idle;
1574		1987
1575	ts.tv_sec = time (0) + idle_timeout;	1988	if (idle <= max_idle)
1576	if (X_COND_TIMEDWAIT (reqwait, reqlock, ts) == ETIMEDOUT)	1989	/* we are allowed to idle, so do so without any timeout */
		1990	X_COND_WAIT (reqwait, reqlock);
		1991	else
1577	{	1992	{
1578	if (idle > max_idle)	1993	/* initialise timeout once */
1579	{	1994	if (!ts.tv_sec)
1580	--idle;	1995	ts.tv_sec = time (0) + idle_timeout;
1581	X_UNLOCK (reqlock);
1582	X_LOCK (wrklock);
1583	--started;
1584	X_UNLOCK (wrklock);
1585	goto quit;
1586	}
1587		1996
1588	/* we are allowed to idle, so do so without any timeout */
1589	X_COND_WAIT (reqwait, reqlock);	1997	if (X_COND_TIMEDWAIT (reqwait, reqlock, ts) == ETIMEDOUT)
		1998	ts.tv_sec = 1; /* assuming this is not a value computed above.,.. */
1590	}	1999	}
1591		2000
1592	--idle;	2001	--idle;
1593	}	2002	}
1594		2003
…		…
1597	X_UNLOCK (reqlock);	2006	X_UNLOCK (reqlock);
1598		2007
1599	if (req->type < 0)	2008	if (req->type < 0)
1600	goto quit;	2009	goto quit;
1601		2010
1602	if (!EIO_CANCELLED (req))
1603	ETP_EXECUTE (self, req);	2011	ETP_EXECUTE (self, req);
1604		2012
1605	X_LOCK (reslock);	2013	X_LOCK (reslock);
1606		2014
1607	++npending;	2015	++npending;
1608		2016
…		…
1623	return 0;	2031	return 0;
1624	}	2032	}
1625		2033
1626	/*****************************************************************************/	2034	/*****************************************************************************/
1627		2035
		2036	int ecb_cold
1628	int eio_init (void (*want_poll)(void), void (*done_poll)(void))	2037	eio_init (void (*want_poll)(void), void (*done_poll)(void))
1629	{	2038	{
		2039	#if !HAVE_PREADWRITE
		2040	X_MUTEX_CREATE (preadwritelock);
		2041	#endif
		2042
1630	return etp_init (want_poll, done_poll);	2043	return etp_init (want_poll, done_poll);
1631	}	2044	}
1632		2045
		2046	ecb_inline void
1633	static void eio_api_destroy (eio_req *req)	2047	eio_api_destroy (eio_req *req)
1634	{	2048	{
1635	free (req);	2049	free (req);
1636	}	2050	}
1637		2051
1638	#define REQ(rtype) \	2052	#define REQ(rtype) \
…		…
1657	{ \	2071	{ \
1658	eio_api_destroy (req); \	2072	eio_api_destroy (req); \
1659	return 0; \	2073	return 0; \
1660	}	2074	}
1661		2075
		2076	static void
1662	static void eio_execute (etp_worker *self, eio_req *req)	2077	eio_execute (etp_worker *self, eio_req *req)
1663	{	2078	{
		2079	if (ecb_expect_false (EIO_CANCELLED (req)))
		2080	{
		2081	req->result = -1;
		2082	req->errorno = ECANCELED;
		2083	return;
		2084	}
		2085
1664	switch (req->type)	2086	switch (req->type)
1665	{	2087	{
1666	case EIO_READ: ALLOC (req->size);	2088	case EIO_READ: ALLOC (req->size);
1667	req->result = req->offs >= 0	2089	req->result = req->offs >= 0
1668	? pread (req->int1, req->ptr2, req->size, req->offs)	2090	? pread (req->int1, req->ptr2, req->size, req->offs)
…		…
1670	case EIO_WRITE: req->result = req->offs >= 0	2092	case EIO_WRITE: req->result = req->offs >= 0
1671	? pwrite (req->int1, req->ptr2, req->size, req->offs)	2093	? pwrite (req->int1, req->ptr2, req->size, req->offs)
1672	: write (req->int1, req->ptr2, req->size); break;	2094	: write (req->int1, req->ptr2, req->size); break;
1673		2095
1674	case EIO_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;	2096	case EIO_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1675	case EIO_SENDFILE: req->result = eio__sendfile (req->int1, req->int2, req->offs, req->size, self); break;	2097	case EIO_SENDFILE: req->result = eio__sendfile (req->int1, req->int2, req->offs, req->size); break;
1676		2098
1677	case EIO_STAT: ALLOC (sizeof (EIO_STRUCT_STAT));	2099	case EIO_STAT: ALLOC (sizeof (EIO_STRUCT_STAT));
1678	req->result = stat (req->ptr1, (EIO_STRUCT_STAT *)req->ptr2); break;	2100	req->result = stat (req->ptr1, (EIO_STRUCT_STAT *)req->ptr2); break;
1679	case EIO_LSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));	2101	case EIO_LSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));
1680	req->result = lstat (req->ptr1, (EIO_STRUCT_STAT *)req->ptr2); break;	2102	req->result = lstat (req->ptr1, (EIO_STRUCT_STAT *)req->ptr2); break;
…		…
1702	case EIO_RENAME: req->result = rename (req->ptr1, req->ptr2); break;	2124	case EIO_RENAME: req->result = rename (req->ptr1, req->ptr2); break;
1703	case EIO_LINK: req->result = link (req->ptr1, req->ptr2); break;	2125	case EIO_LINK: req->result = link (req->ptr1, req->ptr2); break;
1704	case EIO_SYMLINK: req->result = symlink (req->ptr1, req->ptr2); break;	2126	case EIO_SYMLINK: req->result = symlink (req->ptr1, req->ptr2); break;
1705	case EIO_MKNOD: req->result = mknod (req->ptr1, (mode_t)req->int2, (dev_t)req->offs); break;	2127	case EIO_MKNOD: req->result = mknod (req->ptr1, (mode_t)req->int2, (dev_t)req->offs); break;
1706		2128
		2129	case EIO_REALPATH: eio__realpath (req, self); break;
		2130
1707	case EIO_READLINK: ALLOC (PATH_MAX);	2131	case EIO_READLINK: ALLOC (PATH_MAX);
1708	req->result = readlink (req->ptr1, req->ptr2, PATH_MAX); break;	2132	req->result = readlink (req->ptr1, req->ptr2, PATH_MAX); break;
1709		2133
1710	case EIO_SYNC: req->result = 0; sync (); break;	2134	case EIO_SYNC: req->result = 0; sync (); break;
1711	case EIO_FSYNC: req->result = fsync (req->int1); break;	2135	case EIO_FSYNC: req->result = fsync (req->int1); break;
1712	case EIO_FDATASYNC: req->result = fdatasync (req->int1); break;	2136	case EIO_FDATASYNC: req->result = fdatasync (req->int1); break;
		2137	case EIO_SYNCFS: req->result = eio__syncfs (req->int1); break;
		2138	case EIO_SYNC_FILE_RANGE: req->result = eio__sync_file_range (req->int1, req->offs, req->size, req->int2); break;
1713	case EIO_MSYNC: req->result = eio__msync (req->ptr2, req->size, req->int1); break;	2139	case EIO_MSYNC: req->result = eio__msync (req->ptr2, req->size, req->int1); break;
1714	case EIO_MTOUCH: req->result = eio__mtouch (req->ptr2, req->size, req->int1); break;	2140	case EIO_MTOUCH: req->result = eio__mtouch (req); break;
1715	case EIO_MLOCK: req->result = eio__mlock (req->ptr2, req->size); break;	2141	case EIO_MLOCK: req->result = eio__mlock (req->ptr2, req->size); break;
1716	case EIO_MLOCKALL: req->result = eio__mlockall (req->int1); break;	2142	case EIO_MLOCKALL: req->result = eio__mlockall (req->int1); break;
1717	case EIO_SYNC_FILE_RANGE: req->result = eio__sync_file_range (req->int1, req->offs, req->size, req->int2); break;	2143	case EIO_FALLOCATE: req->result = eio__fallocate (req->int1, req->int2, req->offs, req->size); break;
1718		2144
1719	case EIO_READDIR: eio__scandir (req, self); break;	2145	case EIO_READDIR: eio__scandir (req, self); break;
1720		2146
1721	case EIO_BUSY:	2147	case EIO_BUSY:
1722	#ifdef _WIN32	2148	#ifdef _WIN32
…		…
1763	case EIO_NOP:	2189	case EIO_NOP:
1764	req->result = 0;	2190	req->result = 0;
1765	break;	2191	break;
1766		2192
1767	case EIO_CUSTOM:	2193	case EIO_CUSTOM:
1768	((void (*)(eio_req *))req->feed) (req);	2194	req->feed (req);
1769	break;	2195	break;
1770		2196
1771	default:	2197	default:
1772	errno = ENOSYS;	2198	errno = ENOSYS;
1773	req->result = -1;	2199	req->result = -1;
…		…
1802	eio_req *eio_msync (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data)	2228	eio_req *eio_msync (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data)
1803	{	2229	{
1804	REQ (EIO_MSYNC); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND;	2230	REQ (EIO_MSYNC); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND;
1805	}	2231	}
1806		2232
		2233	eio_req *eio_fdatasync (int fd, int pri, eio_cb cb, void *data)
		2234	{
		2235	REQ (EIO_FDATASYNC); req->int1 = fd; SEND;
		2236	}
		2237
		2238	eio_req *eio_syncfs (int fd, int pri, eio_cb cb, void *data)
		2239	{
		2240	REQ (EIO_SYNCFS); req->int1 = fd; SEND;
		2241	}
		2242
		2243	eio_req *eio_sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags, int pri, eio_cb cb, void *data)
		2244	{
		2245	REQ (EIO_SYNC_FILE_RANGE); req->int1 = fd; req->offs = offset; req->size = nbytes; req->int2 = flags; SEND;
		2246	}
		2247
1807	eio_req *eio_mtouch (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data)	2248	eio_req *eio_mtouch (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data)
1808	{	2249	{
1809	REQ (EIO_MTOUCH); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND;	2250	REQ (EIO_MTOUCH); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND;
1810	}	2251	}
1811		2252
…		…
1817	eio_req *eio_mlockall (int flags, int pri, eio_cb cb, void *data)	2258	eio_req *eio_mlockall (int flags, int pri, eio_cb cb, void *data)
1818	{	2259	{
1819	REQ (EIO_MLOCKALL); req->int1 = flags; SEND;	2260	REQ (EIO_MLOCKALL); req->int1 = flags; SEND;
1820	}	2261	}
1821		2262
1822	eio_req *eio_sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags, int pri, eio_cb cb, void *data)	2263	eio_req *eio_fallocate (int fd, int mode, off_t offset, size_t len, int pri, eio_cb cb, void *data)
1823	{	2264	{
1824	REQ (EIO_SYNC_FILE_RANGE); req->int1 = fd; req->offs = offset; req->size = nbytes; req->int2 = flags; SEND;	2265	REQ (EIO_FALLOCATE); req->int1 = fd; req->int2 = mode; req->offs = offset; req->size = len; SEND;
1825	}
1826
1827	eio_req *eio_fdatasync (int fd, int pri, eio_cb cb, void *data)
1828	{
1829	REQ (EIO_FDATASYNC); req->int1 = fd; SEND;
1830	}	2266	}
1831		2267
1832	eio_req *eio_close (int fd, int pri, eio_cb cb, void *data)	2268	eio_req *eio_close (int fd, int pri, eio_cb cb, void *data)
1833	{	2269	{
1834	REQ (EIO_CLOSE); req->int1 = fd; SEND;	2270	REQ (EIO_CLOSE); req->int1 = fd; SEND;
…		…
1872	eio_req *eio_fchmod (int fd, mode_t mode, int pri, eio_cb cb, void *data)	2308	eio_req *eio_fchmod (int fd, mode_t mode, int pri, eio_cb cb, void *data)
1873	{	2309	{
1874	REQ (EIO_FCHMOD); req->int1 = fd; req->int2 = (long)mode; SEND;	2310	REQ (EIO_FCHMOD); req->int1 = fd; req->int2 = (long)mode; SEND;
1875	}	2311	}
1876		2312
1877	eio_req *eio_fchown (int fd, uid_t uid, gid_t gid, int pri, eio_cb cb, void *data)	2313	eio_req *eio_fchown (int fd, eio_uid_t uid, eio_gid_t gid, int pri, eio_cb cb, void *data)
1878	{	2314	{
1879	REQ (EIO_FCHOWN); req->int1 = fd; req->int2 = (long)uid; req->int3 = (long)gid; SEND;	2315	REQ (EIO_FCHOWN); req->int1 = fd; req->int2 = (long)uid; req->int3 = (long)gid; SEND;
1880	}	2316	}
1881		2317
1882	eio_req *eio_dup2 (int fd, int fd2, int pri, eio_cb cb, void *data)	2318	eio_req *eio_dup2 (int fd, int fd2, int pri, eio_cb cb, void *data)
…		…
1902	eio_req *eio_truncate (const char *path, off_t offset, int pri, eio_cb cb, void *data)	2338	eio_req *eio_truncate (const char *path, off_t offset, int pri, eio_cb cb, void *data)
1903	{	2339	{
1904	REQ (EIO_TRUNCATE); PATH; req->offs = offset; SEND;	2340	REQ (EIO_TRUNCATE); PATH; req->offs = offset; SEND;
1905	}	2341	}
1906		2342
1907	eio_req *eio_chown (const char *path, uid_t uid, gid_t gid, int pri, eio_cb cb, void *data)	2343	eio_req *eio_chown (const char *path, eio_uid_t uid, eio_gid_t gid, int pri, eio_cb cb, void *data)
1908	{	2344	{
1909	REQ (EIO_CHOWN); PATH; req->int2 = (long)uid; req->int3 = (long)gid; SEND;	2345	REQ (EIO_CHOWN); PATH; req->int2 = (long)uid; req->int3 = (long)gid; SEND;
1910	}	2346	}
1911		2347
1912	eio_req *eio_chmod (const char *path, mode_t mode, int pri, eio_cb cb, void *data)	2348	eio_req *eio_chmod (const char *path, mode_t mode, int pri, eio_cb cb, void *data)
…		…
1926	}	2362	}
1927		2363
1928	eio_req *eio_readlink (const char *path, int pri, eio_cb cb, void *data)	2364	eio_req *eio_readlink (const char *path, int pri, eio_cb cb, void *data)
1929	{	2365	{
1930	return eio__1path (EIO_READLINK, path, pri, cb, data);	2366	return eio__1path (EIO_READLINK, path, pri, cb, data);
		2367	}
		2368
		2369	eio_req *eio_realpath (const char *path, int pri, eio_cb cb, void *data)
		2370	{
		2371	return eio__1path (EIO_REALPATH, path, pri, cb, data);
1931	}	2372	}
1932		2373
1933	eio_req *eio_stat (const char *path, int pri, eio_cb cb, void *data)	2374	eio_req *eio_stat (const char *path, int pri, eio_cb cb, void *data)
1934	{	2375	{
1935	return eio__1path (EIO_STAT, path, pri, cb, data);	2376	return eio__1path (EIO_STAT, path, pri, cb, data);
…		…
1994	eio_req *eio_rename (const char *path, const char *new_path, int pri, eio_cb cb, void *data)	2435	eio_req *eio_rename (const char *path, const char *new_path, int pri, eio_cb cb, void *data)
1995	{	2436	{
1996	return eio__2path (EIO_RENAME, path, new_path, pri, cb, data);	2437	return eio__2path (EIO_RENAME, path, new_path, pri, cb, data);
1997	}	2438	}
1998		2439
1999	eio_req *eio_custom (eio_cb execute, int pri, eio_cb cb, void *data)	2440	eio_req *eio_custom (void (*execute)(eio_req *), int pri, eio_cb cb, void *data)
2000	{	2441	{
2001	REQ (EIO_CUSTOM); req->feed = (void (*)(eio_req *))execute; SEND;	2442	REQ (EIO_CUSTOM); req->feed = execute; SEND;
2002	}	2443	}
2003		2444
2004	#endif	2445	#endif
2005		2446
2006	eio_req *eio_grp (eio_cb cb, void *data)	2447	eio_req *eio_grp (eio_cb cb, void *data)
…		…
2015	#undef SEND	2456	#undef SEND
2016		2457
2017	/*****************************************************************************/	2458	/*****************************************************************************/
2018	/* grp functions */	2459	/* grp functions */
2019		2460
		2461	void
2020	void eio_grp_feed (eio_req *grp, void (*feed)(eio_req *req), int limit)	2462	eio_grp_feed (eio_req *grp, void (*feed)(eio_req *req), int limit)
2021	{	2463	{
2022	grp->int2 = limit;	2464	grp->int2 = limit;
2023	grp->feed = feed;	2465	grp->feed = feed;
2024		2466
2025	grp_try_feed (grp);	2467	grp_try_feed (grp);
2026	}	2468	}
2027		2469
		2470	void
2028	void eio_grp_limit (eio_req *grp, int limit)	2471	eio_grp_limit (eio_req *grp, int limit)
2029	{	2472	{
2030	grp->int2 = limit;	2473	grp->int2 = limit;
2031		2474
2032	grp_try_feed (grp);	2475	grp_try_feed (grp);
2033	}	2476	}
2034		2477
		2478	void
2035	void eio_grp_add (eio_req *grp, eio_req *req)	2479	eio_grp_add (eio_req *grp, eio_req *req)
2036	{	2480	{
2037	assert (("cannot add requests to IO::AIO::GRP after the group finished", grp->int1 != 2));	2481	assert (("cannot add requests to IO::AIO::GRP after the group finished", grp->int1 != 2));
2038		2482
2039	grp->flags |= EIO_FLAG_GROUPADD;	2483	grp->flags |= EIO_FLAG_GROUPADD;
2040		2484
…		…
2051	}	2495	}
2052		2496
2053	/*****************************************************************************/	2497	/*****************************************************************************/
2054	/* misc garbage */	2498	/* misc garbage */
2055		2499
		2500	eio_ssize_t
2056	ssize_t eio_sendfile_sync (int ofd, int ifd, off_t offset, size_t count)	2501	eio_sendfile_sync (int ofd, int ifd, off_t offset, size_t count)
2057	{	2502	{
2058	etp_worker wrk;
2059	ssize_t ret;
2060
2061	wrk.dbuf = 0;
2062
2063	ret = eio__sendfile (ofd, ifd, offset, count, &wrk);	2503	return eio__sendfile (ofd, ifd, offset, count);
2064
2065	if (wrk.dbuf)
2066	free (wrk.dbuf);
2067
2068	return ret;
2069	}	2504	}
2070		2505

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