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Comparing cvsroot/libeio/eio.c (file contents):
Revision 1.19 by root, Tue Jun 17 23:34:20 2008 UTC vs.
Revision 1.104 by root, Mon Sep 26 16:54:25 2011 UTC

1/* 1/*
2 * libeio implementation 2 * libeio implementation
3 * 3 *
4 * Copyright (c) 2007,2008 Marc Alexander Lehmann <libeio@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010,2011 Marc Alexander Lehmann <libeio@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
… …
35 * and other provisions required by the GPL. If you do not delete the 35 * and other provisions required by the GPL. If you do not delete the
36 * provisions above, a recipient may use your version of this file under 36 * provisions above, a recipient may use your version of this file under
37 * either the BSD or the GPL. 37 * either the BSD or the GPL.
38 */ 38 */
39 39
40#ifndef _WIN32
41# include "config.h"
42#endif
43
40#include "eio.h" 44#include "eio.h"
45#include "ecb.h"
46
47#ifdef EIO_STACKSIZE
48# define X_STACKSIZE EIO_STACKSIZE
49#endif
41#include "xthread.h" 50#include "xthread.h"
42 51
43#include <errno.h> 52#include <errno.h>
44#include <stddef.h> 53#include <stddef.h>
45#include <stdlib.h> 54#include <stdlib.h>
… …
49#include <sys/stat.h> 58#include <sys/stat.h>
50#include <limits.h> 59#include <limits.h>
51#include <fcntl.h> 60#include <fcntl.h>
52#include <assert.h> 61#include <assert.h>
53 62
63/* intptr_t comes from unistd.h, says POSIX/UNIX/tradition */
64/* intptr_t only comes from stdint.h, says idiot openbsd coder */
65#if HAVE_STDINT_H
66# include <stdint.h>
67#endif
68
69#ifndef ECANCELED
70# define ECANCELED EDOM
71#endif
72#ifndef ELOOP
73# define ELOOP EDOM
74#endif
75
76#if !defined(ENOTSOCK) && defined(WSAENOTSOCK)
77# define ENOTSOCK WSAENOTSOCK
78#endif
79
80static void eio_destroy (eio_req *req);
81
54#ifndef EIO_FINISH 82#ifndef EIO_FINISH
55# define EIO_FINISH(req) ((req)->finish) && !EIO_CANCELLED (req) ? (req)->finish (req) : 0 83# define EIO_FINISH(req) ((req)->finish) && !EIO_CANCELLED (req) ? (req)->finish (req) : 0
56#endif 84#endif
57 85
58#ifndef EIO_DESTROY 86#ifndef EIO_DESTROY
… …
61 89
62#ifndef EIO_FEED 90#ifndef EIO_FEED
63# define EIO_FEED(req) do { if ((req)->feed ) (req)->feed (req); } while (0) 91# define EIO_FEED(req) do { if ((req)->feed ) (req)->feed (req); } while (0)
64#endif 92#endif
65 93
94#ifndef EIO_FD_TO_WIN32_HANDLE
95# define EIO_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
96#endif
97#ifndef EIO_WIN32_HANDLE_TO_FD
98# define EIO_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
99#endif
100
101#define EIO_ERRNO(errval,retval) ((errno = errval), retval)
102
103#define EIO_ENOSYS() EIO_ERRNO (ENOSYS, -1)
104
66#ifdef _WIN32 105#ifdef _WIN32
67 106
68 /*doh*/ 107 #undef PAGESIZE
108 #define PAGESIZE 4096 /* GetSystemInfo? */
109
110 /* 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)
69 196
70#else 197#else
71 198
72# include "config.h"
73# include <sys/time.h> 199 #include <sys/time.h>
74# include <sys/select.h> 200 #include <sys/select.h>
201 #include <sys/statvfs.h>
75# 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
76# include <utime.h> 237# include <utime.h>
77# include <signal.h>
78# include <dirent.h>
79
80# ifndef EIO_STRUCT_DIRENT
81# define EIO_STRUCT_DIRENT struct dirent
82# endif 238#endif
83 239
240#if HAVE_SYS_SYSCALL_H
241# include <sys/syscall.h>
242#endif
243
244#if HAVE_SYS_PRCTL_H
245# include <sys/prctl.h>
84#endif 246#endif
85 247
86#if HAVE_SENDFILE 248#if HAVE_SENDFILE
87# if __linux 249# if __linux
88# include <sys/sendfile.h> 250# include <sys/sendfile.h>
89# elif __freebsd 251# elif __FreeBSD__ || defined __APPLE__
90# include <sys/socket.h> 252# include <sys/socket.h>
91# include <sys/uio.h> 253# include <sys/uio.h>
92# elif __hpux 254# elif __hpux
93# include <sys/socket.h> 255# include <sys/socket.h>
94# elif __solaris /* not yet */ 256# elif __solaris
95# include <sys/sendfile.h> 257# include <sys/sendfile.h>
96# else 258# else
97# error sendfile support requested but not available 259# error sendfile support requested but not available
98# endif 260# endif
99#endif 261#endif
100 262
101/* number of seconds after which an idle threads exit */ 263#ifndef D_TYPE
102#define IDLE_TIMEOUT 10 264# define D_TYPE(de) 0
265#endif
266#ifndef D_INO
267# define D_INO(de) 0
268#endif
269#ifndef D_NAMLEN
270# define D_NAMLEN(entp) strlen (D_NAME (entp))
271#endif
103 272
104/* used for struct dirent, AIX doesn't provide it */ 273/* used for struct dirent, AIX doesn't provide it */
105#ifndef NAME_MAX 274#ifndef NAME_MAX
106# define NAME_MAX 4096 275# define NAME_MAX 4096
107#endif 276#endif
108 277
278/* used for readlink etc. */
279#ifndef PATH_MAX
280# define PATH_MAX 4096
281#endif
282
109/* buffer size for various temporary buffers */ 283/* buffer size for various temporary buffers */
110#define EIO_BUFSIZE 65536 284#define EIO_BUFSIZE 65536
111 285
112#define dBUF \ 286#define dBUF \
113 char *eio_buf; \
114 ETP_WORKER_LOCK (self); \
115 self->dbuf = eio_buf = malloc (EIO_BUFSIZE); \ 287 char *eio_buf = malloc (EIO_BUFSIZE); \
116 ETP_WORKER_UNLOCK (self); \
117 errno = ENOMEM; \ 288 errno = ENOMEM; \
118 if (!eio_buf) \ 289 if (!eio_buf) \
119 return -1; 290 return -1
291
292#define FUBd \
293 free (eio_buf)
120 294
121#define EIO_TICKS ((1000000 + 1023) >> 10) 295#define EIO_TICKS ((1000000 + 1023) >> 10)
296
297/*****************************************************************************/
298
299struct tmpbuf
300{
301 void *ptr;
302 int len;
303};
304
305static void *
306tmpbuf_get (struct tmpbuf *buf, int len)
307{
308 if (buf->len < len)
309 {
310 free (buf->ptr);
311 buf->ptr = malloc (buf->len = len);
312 }
313
314 return buf->ptr;
315}
122 316
123/*****************************************************************************/ 317/*****************************************************************************/
124 318
125#define ETP_PRI_MIN EIO_PRI_MIN 319#define ETP_PRI_MIN EIO_PRI_MIN
126#define ETP_PRI_MAX EIO_PRI_MAX 320#define ETP_PRI_MAX EIO_PRI_MAX
… …
132static int eio_finish (eio_req *req); 326static int eio_finish (eio_req *req);
133#define ETP_FINISH(req) eio_finish (req) 327#define ETP_FINISH(req) eio_finish (req)
134static void eio_execute (struct etp_worker *self, eio_req *req); 328static void eio_execute (struct etp_worker *self, eio_req *req);
135#define ETP_EXECUTE(wrk,req) eio_execute (wrk,req) 329#define ETP_EXECUTE(wrk,req) eio_execute (wrk,req)
136 330
137#define ETP_WORKER_CLEAR(req) \
138 if (wrk->dbuf) \
139 { \
140 free (wrk->dbuf); \
141 wrk->dbuf = 0; \
142 } \
143 \
144 if (wrk->dirp) \
145 { \
146 closedir (wrk->dirp); \
147 wrk->dirp = 0; \
148 }
149#define ETP_WORKER_COMMON \
150 void *dbuf; \
151 DIR *dirp;
152
153/*****************************************************************************/ 331/*****************************************************************************/
154 332
155#define ETP_NUM_PRI (ETP_PRI_MAX - ETP_PRI_MIN + 1) 333#define ETP_NUM_PRI (ETP_PRI_MAX - ETP_PRI_MIN + 1)
156 334
157/* calculcate time difference in ~1/EIO_TICKS of a second */ 335/* calculate time difference in ~1/EIO_TICKS of a second */
336ecb_inline int
158static int tvdiff (struct timeval *tv1, struct timeval *tv2) 337tvdiff (struct timeval *tv1, struct timeval *tv2)
159{ 338{
160 return (tv2->tv_sec - tv1->tv_sec ) * EIO_TICKS 339 return (tv2->tv_sec - tv1->tv_sec ) * EIO_TICKS
161 + ((tv2->tv_usec - tv1->tv_usec) >> 10); 340 + ((tv2->tv_usec - tv1->tv_usec) >> 10);
162} 341}
163 342
… …
167static void (*done_poll_cb) (void); 346static void (*done_poll_cb) (void);
168 347
169static unsigned int max_poll_time; /* reslock */ 348static unsigned int max_poll_time; /* reslock */
170static unsigned int max_poll_reqs; /* reslock */ 349static unsigned int max_poll_reqs; /* reslock */
171 350
172static volatile unsigned int nreqs; /* reqlock */ 351static unsigned int nreqs; /* reqlock */
173static volatile unsigned int nready; /* reqlock */ 352static unsigned int nready; /* reqlock */
174static volatile unsigned int npending; /* reqlock */ 353static unsigned int npending; /* reqlock */
175static volatile unsigned int max_idle = 4; 354static unsigned int max_idle = 4; /* maximum number of threads that can idle indefinitely */
355static unsigned int idle_timeout = 10; /* number of seconds after which an idle threads exit */
176 356
177static mutex_t wrklock = X_MUTEX_INIT; 357static xmutex_t wrklock;
178static mutex_t reslock = X_MUTEX_INIT; 358static xmutex_t reslock;
179static mutex_t reqlock = X_MUTEX_INIT; 359static xmutex_t reqlock;
180static cond_t reqwait = X_COND_INIT; 360static xcond_t reqwait;
361
362#if !HAVE_PREADWRITE
363/*
364 * make our pread/pwrite emulation safe against themselves, but not against
365 * normal read/write by using a mutex. slows down execution a lot,
366 * but that's your problem, not mine.
367 */
368static xmutex_t preadwritelock;
369#endif
181 370
182typedef struct etp_worker 371typedef struct etp_worker
183{ 372{
373 struct tmpbuf tmpbuf;
374
184 /* locked by wrklock */ 375 /* locked by wrklock */
185 struct etp_worker *prev, *next; 376 struct etp_worker *prev, *next;
186 377
187 thread_t tid; 378 xthread_t tid;
188 379
189 /* locked by reslock, reqlock or wrklock */ 380#ifdef ETP_WORKER_COMMON
190 ETP_REQ *req; /* currently processed request */
191
192 ETP_WORKER_COMMON 381 ETP_WORKER_COMMON
382#endif
193} etp_worker; 383} etp_worker;
194 384
195static etp_worker wrk_first = { &wrk_first, &wrk_first, 0 }; /* NOT etp */ 385static etp_worker wrk_first; /* NOT etp */
196 386
197#define ETP_WORKER_LOCK(wrk) X_LOCK (wrklock) 387#define ETP_WORKER_LOCK(wrk) X_LOCK (wrklock)
198#define ETP_WORKER_UNLOCK(wrk) X_UNLOCK (wrklock) 388#define ETP_WORKER_UNLOCK(wrk) X_UNLOCK (wrklock)
199 389
200/* worker threads management */ 390/* worker threads management */
201 391
392static void ecb_cold
202static void etp_worker_clear (etp_worker *wrk) 393etp_worker_clear (etp_worker *wrk)
203{ 394{
204 ETP_WORKER_CLEAR (wrk);
205} 395}
206 396
397static void ecb_cold
207static void etp_worker_free (etp_worker *wrk) 398etp_worker_free (etp_worker *wrk)
208{ 399{
400 free (wrk->tmpbuf.ptr);
401
209 wrk->next->prev = wrk->prev; 402 wrk->next->prev = wrk->prev;
210 wrk->prev->next = wrk->next; 403 wrk->prev->next = wrk->next;
211 404
212 free (wrk); 405 free (wrk);
213} 406}
214 407
215static unsigned int etp_nreqs (void) 408static unsigned int
409etp_nreqs (void)
216{ 410{
217 int retval; 411 int retval;
218 if (WORDACCESS_UNSAFE) X_LOCK (reqlock); 412 if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
219 retval = nreqs; 413 retval = nreqs;
220 if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); 414 if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
221 return retval; 415 return retval;
222} 416}
223 417
224static unsigned int etp_nready (void) 418static unsigned int
419etp_nready (void)
225{ 420{
226 unsigned int retval; 421 unsigned int retval;
227 422
228 if (WORDACCESS_UNSAFE) X_LOCK (reqlock); 423 if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
229 retval = nready; 424 retval = nready;
230 if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); 425 if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
231 426
232 return retval; 427 return retval;
233} 428}
234 429
235static unsigned int etp_npending (void) 430static unsigned int
431etp_npending (void)
236{ 432{
237 unsigned int retval; 433 unsigned int retval;
238 434
239 if (WORDACCESS_UNSAFE) X_LOCK (reqlock); 435 if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
240 retval = npending; 436 retval = npending;
241 if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); 437 if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
242 438
243 return retval; 439 return retval;
244} 440}
245 441
246static unsigned int etp_nthreads (void) 442static unsigned int
443etp_nthreads (void)
247{ 444{
248 unsigned int retval; 445 unsigned int retval;
249 446
250 if (WORDACCESS_UNSAFE) X_LOCK (reqlock); 447 if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
251 retval = started; 448 retval = started;
… …
265} etp_reqq; 462} etp_reqq;
266 463
267static etp_reqq req_queue; 464static etp_reqq req_queue;
268static etp_reqq res_queue; 465static etp_reqq res_queue;
269 466
467static void ecb_noinline ecb_cold
468reqq_init (etp_reqq *q)
469{
470 int pri;
471
472 for (pri = 0; pri < ETP_NUM_PRI; ++pri)
473 q->qs[pri] = q->qe[pri] = 0;
474
475 q->size = 0;
476}
477
478static int ecb_noinline
270static int reqq_push (etp_reqq *q, ETP_REQ *req) 479reqq_push (etp_reqq *q, ETP_REQ *req)
271{ 480{
272 int pri = req->pri; 481 int pri = req->pri;
273 req->next = 0; 482 req->next = 0;
274 483
275 if (q->qe[pri]) 484 if (q->qe[pri])
… …
281 q->qe[pri] = q->qs[pri] = req; 490 q->qe[pri] = q->qs[pri] = req;
282 491
283 return q->size++; 492 return q->size++;
284} 493}
285 494
495static ETP_REQ * ecb_noinline
286static ETP_REQ *reqq_shift (etp_reqq *q) 496reqq_shift (etp_reqq *q)
287{ 497{
288 int pri; 498 int pri;
289 499
290 if (!q->size) 500 if (!q->size)
291 return 0; 501 return 0;
… …
306 } 516 }
307 517
308 abort (); 518 abort ();
309} 519}
310 520
311static void etp_atfork_prepare (void) 521static int ecb_cold
522etp_init (void (*want_poll)(void), void (*done_poll)(void))
312{ 523{
313 X_LOCK (wrklock); 524 X_MUTEX_CREATE (wrklock);
314 X_LOCK (reqlock); 525 X_MUTEX_CREATE (reslock);
315 X_LOCK (reslock); 526 X_MUTEX_CREATE (reqlock);
316#if !HAVE_PREADWRITE 527 X_COND_CREATE (reqwait);
317 X_LOCK (preadwritelock);
318#endif
319}
320 528
321static void etp_atfork_parent (void) 529 reqq_init (&req_queue);
322{ 530 reqq_init (&res_queue);
323#if !HAVE_PREADWRITE
324 X_UNLOCK (preadwritelock);
325#endif
326 X_UNLOCK (reslock);
327 X_UNLOCK (reqlock);
328 X_UNLOCK (wrklock);
329}
330 531
331static void etp_atfork_child (void) 532 wrk_first.next =
332{ 533 wrk_first.prev = &wrk_first;
333 ETP_REQ *prv;
334
335 while (prv = reqq_shift (&req_queue))
336 ETP_DESTROY (prv);
337
338 while (prv = reqq_shift (&res_queue))
339 ETP_DESTROY (prv);
340
341 while (wrk_first.next != &wrk_first)
342 {
343 etp_worker *wrk = wrk_first.next;
344
345 if (wrk->req)
346 ETP_DESTROY (wrk->req);
347
348 etp_worker_clear (wrk);
349 etp_worker_free (wrk);
350 }
351 534
352 started = 0; 535 started = 0;
353 idle = 0; 536 idle = 0;
354 nreqs = 0; 537 nreqs = 0;
355 nready = 0; 538 nready = 0;
356 npending = 0; 539 npending = 0;
357 540
358 etp_atfork_parent ();
359}
360
361static void
362etp_once_init (void)
363{
364 X_THREAD_ATFORK (etp_atfork_prepare, etp_atfork_parent, etp_atfork_child);
365}
366
367static int
368etp_init (void (*want_poll)(void), void (*done_poll)(void))
369{
370 static pthread_once_t doinit = PTHREAD_ONCE_INIT;
371
372 pthread_once (&doinit, etp_once_init);
373
374 want_poll_cb = want_poll; 541 want_poll_cb = want_poll;
375 done_poll_cb = done_poll; 542 done_poll_cb = done_poll;
376 543
377 return 0; 544 return 0;
378} 545}
379 546
380X_THREAD_PROC (etp_proc); 547X_THREAD_PROC (etp_proc);
381 548
549static void ecb_cold
382static void etp_start_thread (void) 550etp_start_thread (void)
383{ 551{
384 etp_worker *wrk = calloc (1, sizeof (etp_worker)); 552 etp_worker *wrk = calloc (1, sizeof (etp_worker));
385 553
386 /*TODO*/ 554 /*TODO*/
387 assert (("unable to allocate worker thread data", wrk)); 555 assert (("unable to allocate worker thread data", wrk));
… …
400 free (wrk); 568 free (wrk);
401 569
402 X_UNLOCK (wrklock); 570 X_UNLOCK (wrklock);
403} 571}
404 572
573static void
405static void etp_maybe_start_thread (void) 574etp_maybe_start_thread (void)
406{ 575{
407 if (etp_nthreads () >= wanted) 576 if (ecb_expect_true (etp_nthreads () >= wanted))
408 return; 577 return;
409 578
410 /* todo: maybe use idle here, but might be less exact */ 579 /* todo: maybe use idle here, but might be less exact */
411 if (0 <= (int)etp_nthreads () + (int)etp_npending () - (int)etp_nreqs ()) 580 if (ecb_expect_true (0 <= (int)etp_nthreads () + (int)etp_npending () - (int)etp_nreqs ()))
412 return; 581 return;
413 582
414 etp_start_thread (); 583 etp_start_thread ();
415} 584}
416 585
586static void ecb_cold
417static void etp_end_thread (void) 587etp_end_thread (void)
418{ 588{
419 eio_req *req = calloc (1, sizeof (eio_req)); 589 eio_req *req = calloc (1, sizeof (eio_req));
420 590
421 req->type = -1; 591 req->type = -1;
422 req->pri = ETP_PRI_MAX - ETP_PRI_MIN; 592 req->pri = ETP_PRI_MAX - ETP_PRI_MIN;
… …
429 X_LOCK (wrklock); 599 X_LOCK (wrklock);
430 --started; 600 --started;
431 X_UNLOCK (wrklock); 601 X_UNLOCK (wrklock);
432} 602}
433 603
434static int etp_poll (void) 604static int
605etp_poll (void)
435{ 606{
436 unsigned int maxreqs; 607 unsigned int maxreqs;
437 unsigned int maxtime; 608 unsigned int maxtime;
438 struct timeval tv_start, tv_now; 609 struct timeval tv_start, tv_now;
439 610
… …
469 640
470 X_LOCK (reqlock); 641 X_LOCK (reqlock);
471 --nreqs; 642 --nreqs;
472 X_UNLOCK (reqlock); 643 X_UNLOCK (reqlock);
473 644
474 if (req->type == EIO_GROUP && req->size) 645 if (ecb_expect_false (req->type == EIO_GROUP && req->size))
475 { 646 {
476 req->int1 = 1; /* mark request as delayed */ 647 req->int1 = 1; /* mark request as delayed */
477 continue; 648 continue;
478 } 649 }
479 else 650 else
480 { 651 {
481 int res = ETP_FINISH (req); 652 int res = ETP_FINISH (req);
482 if (res) 653 if (ecb_expect_false (res))
483 return res; 654 return res;
484 } 655 }
485 656
486 if (maxreqs && !--maxreqs) 657 if (ecb_expect_false (maxreqs && !--maxreqs))
487 break; 658 break;
488 659
489 if (maxtime) 660 if (maxtime)
490 { 661 {
491 gettimeofday (&tv_now, 0); 662 gettimeofday (&tv_now, 0);
… …
497 668
498 errno = EAGAIN; 669 errno = EAGAIN;
499 return -1; 670 return -1;
500} 671}
501 672
673static void
502static void etp_cancel (ETP_REQ *req) 674etp_cancel (ETP_REQ *req)
503{ 675{
504 X_LOCK (wrklock); 676 req->cancelled = 1;
505 req->flags |= EIO_FLAG_CANCELLED;
506 X_UNLOCK (wrklock);
507 677
508 eio_grp_cancel (req); 678 eio_grp_cancel (req);
509} 679}
510 680
681static void
511static void etp_submit (ETP_REQ *req) 682etp_submit (ETP_REQ *req)
512{ 683{
513 req->pri -= ETP_PRI_MIN; 684 req->pri -= ETP_PRI_MIN;
514 685
515 if (req->pri < ETP_PRI_MIN - ETP_PRI_MIN) req->pri = ETP_PRI_MIN - ETP_PRI_MIN; 686 if (ecb_expect_false (req->pri < ETP_PRI_MIN - ETP_PRI_MIN)) req->pri = ETP_PRI_MIN - ETP_PRI_MIN;
516 if (req->pri > ETP_PRI_MAX - ETP_PRI_MIN) req->pri = ETP_PRI_MAX - ETP_PRI_MIN; 687 if (ecb_expect_false (req->pri > ETP_PRI_MAX - ETP_PRI_MIN)) req->pri = ETP_PRI_MAX - ETP_PRI_MIN;
517 688
689 if (ecb_expect_false (req->type == EIO_GROUP))
690 {
691 /* I hope this is worth it :/ */
518 X_LOCK (reqlock); 692 X_LOCK (reqlock);
519 ++nreqs; 693 ++nreqs;
694 X_UNLOCK (reqlock);
695
696 X_LOCK (reslock);
697
698 ++npending;
699
700 if (!reqq_push (&res_queue, req) && want_poll_cb)
701 want_poll_cb ();
702
703 X_UNLOCK (reslock);
704 }
705 else
706 {
707 X_LOCK (reqlock);
708 ++nreqs;
520 ++nready; 709 ++nready;
521 reqq_push (&req_queue, req); 710 reqq_push (&req_queue, req);
522 X_COND_SIGNAL (reqwait); 711 X_COND_SIGNAL (reqwait);
523 X_UNLOCK (reqlock); 712 X_UNLOCK (reqlock);
524 713
525 etp_maybe_start_thread (); 714 etp_maybe_start_thread ();
715 }
526} 716}
527 717
718static void ecb_cold
528static void etp_set_max_poll_time (double nseconds) 719etp_set_max_poll_time (double nseconds)
529{ 720{
530 if (WORDACCESS_UNSAFE) X_LOCK (reslock); 721 if (WORDACCESS_UNSAFE) X_LOCK (reslock);
531 max_poll_time = nseconds; 722 max_poll_time = nseconds * EIO_TICKS;
532 if (WORDACCESS_UNSAFE) X_UNLOCK (reslock); 723 if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);
533} 724}
534 725
726static void ecb_cold
535static void etp_set_max_poll_reqs (unsigned int maxreqs) 727etp_set_max_poll_reqs (unsigned int maxreqs)
536{ 728{
537 if (WORDACCESS_UNSAFE) X_LOCK (reslock); 729 if (WORDACCESS_UNSAFE) X_LOCK (reslock);
538 max_poll_reqs = maxreqs; 730 max_poll_reqs = maxreqs;
539 if (WORDACCESS_UNSAFE) X_UNLOCK (reslock); 731 if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);
540} 732}
541 733
734static void ecb_cold
542static void etp_set_max_idle (unsigned int nthreads) 735etp_set_max_idle (unsigned int nthreads)
543{ 736{
544 if (WORDACCESS_UNSAFE) X_LOCK (reqlock); 737 if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
545 max_idle = nthreads <= 0 ? 1 : nthreads; 738 max_idle = nthreads;
546 if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); 739 if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
547} 740}
548 741
742static void ecb_cold
743etp_set_idle_timeout (unsigned int seconds)
744{
745 if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
746 idle_timeout = seconds;
747 if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
748}
749
750static void ecb_cold
549static void etp_set_min_parallel (unsigned int nthreads) 751etp_set_min_parallel (unsigned int nthreads)
550{ 752{
551 if (wanted < nthreads) 753 if (wanted < nthreads)
552 wanted = nthreads; 754 wanted = nthreads;
553} 755}
554 756
757static void ecb_cold
555static void etp_set_max_parallel (unsigned int nthreads) 758etp_set_max_parallel (unsigned int nthreads)
556{ 759{
557 if (wanted > nthreads) 760 if (wanted > nthreads)
558 wanted = nthreads; 761 wanted = nthreads;
559 762
560 while (started > wanted) 763 while (started > wanted)
561 etp_end_thread (); 764 etp_end_thread ();
562} 765}
563 766
564/*****************************************************************************/ 767/*****************************************************************************/
565 768
769static void
566static void grp_try_feed (eio_req *grp) 770grp_try_feed (eio_req *grp)
567{ 771{
568 while (grp->size < grp->int2 && !EIO_CANCELLED (grp)) 772 while (grp->size < grp->int2 && !EIO_CANCELLED (grp))
569 { 773 {
570 int old_len = grp->size; 774 grp->flags &= ~EIO_FLAG_GROUPADD;
571 775
572 EIO_FEED (grp); 776 EIO_FEED (grp);
573 777
574 /* stop if no progress has been made */ 778 /* stop if no progress has been made */
575 if (old_len == grp->size) 779 if (!(grp->flags & EIO_FLAG_GROUPADD))
576 { 780 {
577 grp->feed = 0; 781 grp->feed = 0;
578 break; 782 break;
579 } 783 }
580 } 784 }
581} 785}
582 786
787static int
583static int grp_dec (eio_req *grp) 788grp_dec (eio_req *grp)
584{ 789{
585 --grp->size; 790 --grp->size;
586 791
587 /* call feeder, if applicable */ 792 /* call feeder, if applicable */
588 grp_try_feed (grp); 793 grp_try_feed (grp);
… …
592 return eio_finish (grp); 797 return eio_finish (grp);
593 else 798 else
594 return 0; 799 return 0;
595} 800}
596 801
802static void
597void eio_destroy (eio_req *req) 803eio_destroy (eio_req *req)
598{ 804{
599 if ((req)->flags & EIO_FLAG_PTR1_FREE) free (req->ptr1); 805 if ((req)->flags & EIO_FLAG_PTR1_FREE) free (req->ptr1);
600 if ((req)->flags & EIO_FLAG_PTR2_FREE) free (req->ptr2); 806 if ((req)->flags & EIO_FLAG_PTR2_FREE) free (req->ptr2);
601 807
602 EIO_DESTROY (req); 808 EIO_DESTROY (req);
603} 809}
604 810
811static int
605static int eio_finish (eio_req *req) 812eio_finish (eio_req *req)
606{ 813{
607 int res = EIO_FINISH (req); 814 int res = EIO_FINISH (req);
608 815
609 if (req->grp) 816 if (req->grp)
610 { 817 {
… …
618 if (grp->grp_first == req) 825 if (grp->grp_first == req)
619 grp->grp_first = req->grp_next; 826 grp->grp_first = req->grp_next;
620 827
621 res2 = grp_dec (grp); 828 res2 = grp_dec (grp);
622 829
623 if (!res && res2) 830 if (!res)
624 res = res2; 831 res = res2;
625 } 832 }
626 833
627 eio_destroy (req); 834 eio_destroy (req);
628 835
629 return res; 836 return res;
630} 837}
631 838
839void
632void eio_grp_cancel (eio_req *grp) 840eio_grp_cancel (eio_req *grp)
633{ 841{
634 for (grp = grp->grp_first; grp; grp = grp->grp_next) 842 for (grp = grp->grp_first; grp; grp = grp->grp_next)
635 eio_cancel (grp); 843 eio_cancel (grp);
636} 844}
637 845
846void
638void eio_cancel (eio_req *req) 847eio_cancel (eio_req *req)
639{ 848{
640 etp_cancel (req); 849 etp_cancel (req);
641} 850}
642 851
852void
643void eio_submit (eio_req *req) 853eio_submit (eio_req *req)
644{ 854{
645 etp_submit (req); 855 etp_submit (req);
646} 856}
647 857
648unsigned int eio_nreqs (void) 858unsigned int
859eio_nreqs (void)
649{ 860{
650 return etp_nreqs (); 861 return etp_nreqs ();
651} 862}
652 863
653unsigned int eio_nready (void) 864unsigned int
865eio_nready (void)
654{ 866{
655 return etp_nready (); 867 return etp_nready ();
656} 868}
657 869
658unsigned int eio_npending (void) 870unsigned int
871eio_npending (void)
659{ 872{
660 return etp_npending (); 873 return etp_npending ();
661} 874}
662 875
663unsigned int eio_nthreads (void) 876unsigned int ecb_cold
877eio_nthreads (void)
664{ 878{
665 return etp_nthreads (); 879 return etp_nthreads ();
666} 880}
667 881
882void ecb_cold
668void eio_set_max_poll_time (double nseconds) 883eio_set_max_poll_time (double nseconds)
669{ 884{
670 etp_set_max_poll_time (nseconds); 885 etp_set_max_poll_time (nseconds);
671} 886}
672 887
888void ecb_cold
673void eio_set_max_poll_reqs (unsigned int maxreqs) 889eio_set_max_poll_reqs (unsigned int maxreqs)
674{ 890{
675 etp_set_max_poll_reqs (maxreqs); 891 etp_set_max_poll_reqs (maxreqs);
676} 892}
677 893
894void ecb_cold
678void eio_set_max_idle (unsigned int nthreads) 895eio_set_max_idle (unsigned int nthreads)
679{ 896{
680 etp_set_max_idle (nthreads); 897 etp_set_max_idle (nthreads);
681} 898}
682 899
900void ecb_cold
901eio_set_idle_timeout (unsigned int seconds)
902{
903 etp_set_idle_timeout (seconds);
904}
905
906void ecb_cold
683void eio_set_min_parallel (unsigned int nthreads) 907eio_set_min_parallel (unsigned int nthreads)
684{ 908{
685 etp_set_min_parallel (nthreads); 909 etp_set_min_parallel (nthreads);
686} 910}
687 911
912void ecb_cold
688void eio_set_max_parallel (unsigned int nthreads) 913eio_set_max_parallel (unsigned int nthreads)
689{ 914{
690 etp_set_max_parallel (nthreads); 915 etp_set_max_parallel (nthreads);
691} 916}
692 917
693int eio_poll (void) 918int eio_poll (void)
… …
697 922
698/*****************************************************************************/ 923/*****************************************************************************/
699/* work around various missing functions */ 924/* work around various missing functions */
700 925
701#if !HAVE_PREADWRITE 926#if !HAVE_PREADWRITE
927# undef pread
928# undef pwrite
702# define pread eio__pread 929# define pread eio__pread
703# define pwrite eio__pwrite 930# define pwrite eio__pwrite
704 931
705/*
706 * make our pread/pwrite safe against themselves, but not against
707 * normal read/write by using a mutex. slows down execution a lot,
708 * but that's your problem, not mine.
709 */
710static mutex_t preadwritelock = X_MUTEX_INIT;
711
712static ssize_t 932static eio_ssize_t
713eio__pread (int fd, void *buf, size_t count, off_t offset) 933eio__pread (int fd, void *buf, size_t count, off_t offset)
714{ 934{
715 ssize_t res; 935 eio_ssize_t res;
716 off_t ooffset; 936 off_t ooffset;
717 937
718 X_LOCK (preadwritelock); 938 X_LOCK (preadwritelock);
719 ooffset = lseek (fd, 0, SEEK_CUR); 939 ooffset = lseek (fd, 0, SEEK_CUR);
720 lseek (fd, offset, SEEK_SET); 940 lseek (fd, offset, SEEK_SET);
… …
723 X_UNLOCK (preadwritelock); 943 X_UNLOCK (preadwritelock);
724 944
725 return res; 945 return res;
726} 946}
727 947
728static ssize_t 948static eio_ssize_t
729eio__pwrite (int fd, void *buf, size_t count, off_t offset) 949eio__pwrite (int fd, void *buf, size_t count, off_t offset)
730{ 950{
731 ssize_t res; 951 eio_ssize_t res;
732 off_t ooffset; 952 off_t ooffset;
733 953
734 X_LOCK (preadwritelock); 954 X_LOCK (preadwritelock);
735 ooffset = lseek (fd, 0, SEEK_CUR); 955 ooffset = lseek (fd, 0, SEEK_CUR);
736 lseek (fd, offset, SEEK_SET); 956 lseek (fd, offset, SEEK_SET);
737 res = write (fd, buf, count); 957 res = write (fd, buf, count);
738 lseek (fd, offset, SEEK_SET); 958 lseek (fd, ooffset, SEEK_SET);
739 X_UNLOCK (preadwritelock); 959 X_UNLOCK (preadwritelock);
740 960
741 return res; 961 return res;
742} 962}
743#endif 963#endif
744 964
745#ifndef HAVE_FUTIMES 965#ifndef HAVE_UTIMES
746 966
967# undef utimes
747# define utimes(path,times) eio__utimes (path, times) 968# define utimes(path,times) eio__utimes (path, times)
748# define futimes(fd,times) eio__futimes (fd, times)
749 969
750static int 970static int
751eio__utimes (const char *filename, const struct timeval times[2]) 971eio__utimes (const char *filename, const struct timeval times[2])
752{ 972{
753 if (times) 973 if (times)
… …
761 } 981 }
762 else 982 else
763 return utime (filename, 0); 983 return utime (filename, 0);
764} 984}
765 985
986#endif
987
988#ifndef HAVE_FUTIMES
989
990# undef futimes
991# define futimes(fd,times) eio__futimes (fd, times)
992
993static int
766static int eio__futimes (int fd, const struct timeval tv[2]) 994eio__futimes (int fd, const struct timeval tv[2])
767{ 995{
768 errno = ENOSYS; 996 errno = ENOSYS;
769 return -1; 997 return -1;
770} 998}
771 999
772#endif 1000#endif
773 1001
774#if !HAVE_FDATASYNC 1002#if !HAVE_FDATASYNC
1003# undef fdatasync
775# define fdatasync fsync 1004# define fdatasync(fd) fsync (fd)
776#endif 1005#endif
1006
1007static int
1008eio__syncfs (int fd)
1009{
1010 int res;
1011
1012#if HAVE_SYS_SYNCFS
1013 res = (int)syscall (__NR_syncfs, (int)(fd));
1014#else
1015 res = -1;
1016 errno = ENOSYS;
1017#endif
1018
1019 if (res < 0 && errno == ENOSYS && fd >= 0)
1020 sync ();
1021
1022 return res;
1023}
1024
1025/* sync_file_range always needs emulation */
1026static int
1027eio__sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags)
1028{
1029#if HAVE_SYNC_FILE_RANGE
1030 int res;
1031
1032 if (EIO_SYNC_FILE_RANGE_WAIT_BEFORE != SYNC_FILE_RANGE_WAIT_BEFORE
1033 || EIO_SYNC_FILE_RANGE_WRITE != SYNC_FILE_RANGE_WRITE
1034 || EIO_SYNC_FILE_RANGE_WAIT_AFTER != SYNC_FILE_RANGE_WAIT_AFTER)
1035 {
1036 flags = 0
1037 | (flags & EIO_SYNC_FILE_RANGE_WAIT_BEFORE ? SYNC_FILE_RANGE_WAIT_BEFORE : 0)
1038 | (flags & EIO_SYNC_FILE_RANGE_WRITE ? SYNC_FILE_RANGE_WRITE : 0)
1039 | (flags & EIO_SYNC_FILE_RANGE_WAIT_AFTER ? SYNC_FILE_RANGE_WAIT_AFTER : 0);
1040 }
1041
1042 res = sync_file_range (fd, offset, nbytes, flags);
1043
1044 if (!res || errno != ENOSYS)
1045 return res;
1046#endif
1047
1048 /* even though we could play tricks with the flags, it's better to always
1049 * call fdatasync, as that matches the expectation of its users best */
1050 return fdatasync (fd);
1051}
1052
1053static int
1054eio__fallocate (int fd, int mode, off_t offset, size_t len)
1055{
1056#if HAVE_FALLOCATE
1057 return fallocate (fd, mode, offset, len);
1058#else
1059 errno = ENOSYS;
1060 return -1;
1061#endif
1062}
777 1063
778#if !HAVE_READAHEAD 1064#if !HAVE_READAHEAD
1065# undef readahead
779# define readahead(fd,offset,count) eio__readahead (fd, offset, count, self) 1066# define readahead(fd,offset,count) eio__readahead (fd, offset, count, self)
780 1067
781static ssize_t 1068static eio_ssize_t
782eio__readahead (int fd, off_t offset, size_t count, etp_worker *self) 1069eio__readahead (int fd, off_t offset, size_t count, etp_worker *self)
783{ 1070{
784 size_t todo = count; 1071 size_t todo = count;
785 dBUF; 1072 dBUF;
786 1073
… …
791 pread (fd, eio_buf, len, offset); 1078 pread (fd, eio_buf, len, offset);
792 offset += len; 1079 offset += len;
793 todo -= len; 1080 todo -= len;
794 } 1081 }
795 1082
1083 FUBd;
1084
796 errno = 0; 1085 errno = 0;
797 return count; 1086 return count;
798} 1087}
799 1088
800#endif 1089#endif
801 1090
802/* sendfile always needs emulation */ 1091/* sendfile always needs emulation */
803static ssize_t 1092static eio_ssize_t
804eio__sendfile (int ofd, int ifd, off_t offset, size_t count, etp_worker *self) 1093eio__sendfile (int ofd, int ifd, off_t offset, size_t count)
805{ 1094{
1095 eio_ssize_t written = 0;
806 ssize_t res; 1096 eio_ssize_t res;
807 1097
808 if (!count) 1098 if (!count)
809 return 0; 1099 return 0;
810 1100
1101 for (;;)
1102 {
1103#ifdef __APPLE__
1104# undef HAVE_SENDFILE /* broken, as everything on os x */
1105#endif
811#if HAVE_SENDFILE 1106#if HAVE_SENDFILE
812# if __linux 1107# if __linux
1108 off_t soffset = offset;
813 res = sendfile (ofd, ifd, &offset, count); 1109 res = sendfile (ofd, ifd, &soffset, count);
814 1110
815# elif __freebsd 1111# elif __FreeBSD__
816 /* 1112 /*
817 * Of course, the freebsd sendfile is a dire hack with no thoughts 1113 * Of course, the freebsd sendfile is a dire hack with no thoughts
818 * wasted on making it similar to other I/O functions. 1114 * wasted on making it similar to other I/O functions.
819 */ 1115 */
820 {
821 off_t sbytes; 1116 off_t sbytes;
822 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0); 1117 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
823 1118
824 if (res < 0 && sbytes) 1119 #if 0 /* according to the manpage, this is correct, but broken behaviour */
825 /* maybe only on EAGAIN: as usual, the manpage leaves you guessing */ 1120 /* freebsd' sendfile will return 0 on success */
1121 /* freebsd 8 documents it as only setting *sbytes on EINTR and EAGAIN, but */
1122 /* not on e.g. EIO or EPIPE - sounds broken */
1123 if ((res < 0 && (errno == EAGAIN || errno == EINTR) && sbytes) || res == 0)
826 res = sbytes; 1124 res = sbytes;
827 } 1125 #endif
1126
1127 /* according to source inspection, this is correct, and useful behaviour */
1128 if (sbytes)
1129 res = sbytes;
1130
1131# elif defined (__APPLE__)
1132 off_t sbytes = count;
1133 res = sendfile (ifd, ofd, offset, &sbytes, 0, 0);
1134
1135 /* according to the manpage, sbytes is always valid */
1136 if (sbytes)
1137 res = sbytes;
828 1138
829# elif __hpux 1139# elif __hpux
830 res = sendfile (ofd, ifd, offset, count, 0, 0); 1140 res = sendfile (ofd, ifd, offset, count, 0, 0);
831 1141
832# elif __solaris 1142# elif __solaris
833 {
834 struct sendfilevec vec; 1143 struct sendfilevec vec;
835 size_t sbytes; 1144 size_t sbytes;
836 1145
837 vec.sfv_fd = ifd; 1146 vec.sfv_fd = ifd;
838 vec.sfv_flag = 0; 1147 vec.sfv_flag = 0;
839 vec.sfv_off = offset; 1148 vec.sfv_off = offset;
840 vec.sfv_len = count; 1149 vec.sfv_len = count;
841 1150
842 res = sendfilev (ofd, &vec, 1, &sbytes); 1151 res = sendfilev (ofd, &vec, 1, &sbytes);
843 1152
844 if (res < 0 && sbytes) 1153 if (res < 0 && sbytes)
845 res = sbytes; 1154 res = sbytes;
846 }
847 1155
848# endif 1156# endif
1157
1158#elif defined (_WIN32) && 0
1159 /* does not work, just for documentation of what would need to be done */
1160 /* actually, cannot be done like this, as TransmitFile changes the file offset, */
1161 /* libeio guarantees that the file offset does not change, and windows */
1162 /* has no way to get an independent handle to the same file description */
1163 HANDLE h = TO_SOCKET (ifd);
1164 SetFilePointer (h, offset, 0, FILE_BEGIN);
1165 res = TransmitFile (TO_SOCKET (ofd), h, count, 0, 0, 0, 0);
1166
849#else 1167#else
850 res = -1; 1168 res = -1;
851 errno = ENOSYS; 1169 errno = ENOSYS;
852#endif 1170#endif
853 1171
1172 /* we assume sendfile can copy at least 128mb in one go */
1173 if (res <= 128 * 1024 * 1024)
1174 {
1175 if (res > 0)
1176 written += res;
1177
1178 if (written)
1179 return written;
1180
1181 break;
1182 }
1183 else
1184 {
1185 /* if we requested more, then probably the kernel was lazy */
1186 written += res;
1187 offset += res;
1188 count -= res;
1189
1190 if (!count)
1191 return written;
1192 }
1193 }
1194
854 if (res < 0 1195 if (res < 0
855 && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK 1196 && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
1197 /* BSDs */
1198#ifdef ENOTSUP /* sigh, if the steenking pile called openbsd would only try to at least compile posix code... */
1199 || errno == ENOTSUP
1200#endif
1201#ifdef EOPNOTSUPP /* windows */
1202 || errno == EOPNOTSUPP /* BSDs */
1203#endif
856#if __solaris 1204#if __solaris
857 || errno == EAFNOSUPPORT || errno == EPROTOTYPE 1205 || errno == EAFNOSUPPORT || errno == EPROTOTYPE
858#endif 1206#endif
859 ) 1207 )
860 ) 1208 )
… …
864 1212
865 res = 0; 1213 res = 0;
866 1214
867 while (count) 1215 while (count)
868 { 1216 {
869 ssize_t cnt; 1217 eio_ssize_t cnt;
870 1218
871 cnt = pread (ifd, eio_buf, count > EIO_BUFSIZE ? EIO_BUFSIZE : count, offset); 1219 cnt = pread (ifd, eio_buf, count > EIO_BUFSIZE ? EIO_BUFSIZE : count, offset);
872 1220
873 if (cnt <= 0) 1221 if (cnt <= 0)
874 { 1222 {
… …
886 1234
887 offset += cnt; 1235 offset += cnt;
888 res += cnt; 1236 res += cnt;
889 count -= cnt; 1237 count -= cnt;
890 } 1238 }
1239
1240 FUBd;
891 } 1241 }
892 1242
893 return res; 1243 return res;
1244}
1245
1246#ifdef PAGESIZE
1247# define eio_pagesize() PAGESIZE
1248#else
1249static intptr_t
1250eio_pagesize (void)
1251{
1252 static intptr_t page;
1253
1254 if (!page)
1255 page = sysconf (_SC_PAGESIZE);
1256
1257 return page;
1258}
1259#endif
1260
1261static void
1262eio_page_align (void **addr, size_t *length)
1263{
1264 intptr_t mask = eio_pagesize () - 1;
1265
1266 /* round down addr */
1267 intptr_t adj = mask & (intptr_t)*addr;
1268
1269 *addr = (void *)((intptr_t)*addr - adj);
1270 *length += adj;
1271
1272 /* round up length */
1273 *length = (*length + mask) & ~mask;
1274}
1275
1276#if !_POSIX_MEMLOCK
1277# define eio__mlockall(a) EIO_ENOSYS ()
1278#else
1279
1280static int
1281eio__mlockall (int flags)
1282{
1283 #if __GLIBC__ == 2 && __GLIBC_MINOR__ <= 7
1284 extern int mallopt (int, int);
1285 mallopt (-6, 238); /* http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=473812 */
1286 #endif
1287
1288 if (EIO_MCL_CURRENT != MCL_CURRENT
1289 || EIO_MCL_FUTURE != MCL_FUTURE)
1290 {
1291 flags = 0
1292 | (flags & EIO_MCL_CURRENT ? MCL_CURRENT : 0)
1293 | (flags & EIO_MCL_FUTURE ? MCL_FUTURE : 0);
1294 }
1295
1296 return mlockall (flags);
1297}
1298#endif
1299
1300#if !_POSIX_MEMLOCK_RANGE
1301# define eio__mlock(a,b) EIO_ENOSYS ()
1302#else
1303
1304static int
1305eio__mlock (void *addr, size_t length)
1306{
1307 eio_page_align (&addr, &length);
1308
1309 return mlock (addr, length);
1310}
1311
1312#endif
1313
1314#if !(_POSIX_MAPPED_FILES && _POSIX_SYNCHRONIZED_IO)
1315# define eio__msync(a,b,c) EIO_ENOSYS ()
1316#else
1317
1318static int
1319eio__msync (void *mem, size_t len, int flags)
1320{
1321 eio_page_align (&mem, &len);
1322
1323 if (EIO_MS_ASYNC != MS_SYNC
1324 || EIO_MS_INVALIDATE != MS_INVALIDATE
1325 || EIO_MS_SYNC != MS_SYNC)
1326 {
1327 flags = 0
1328 | (flags & EIO_MS_ASYNC ? MS_ASYNC : 0)
1329 | (flags & EIO_MS_INVALIDATE ? MS_INVALIDATE : 0)
1330 | (flags & EIO_MS_SYNC ? MS_SYNC : 0);
1331 }
1332
1333 return msync (mem, len, flags);
1334}
1335
1336#endif
1337
1338static int
1339eio__mtouch (eio_req *req)
1340{
1341 void *mem = req->ptr2;
1342 size_t len = req->size;
1343 int flags = req->int1;
1344
1345 eio_page_align (&mem, &len);
1346
1347 {
1348 intptr_t addr = (intptr_t)mem;
1349 intptr_t end = addr + len;
1350 intptr_t page = eio_pagesize ();
1351
1352 if (addr < end)
1353 if (flags & EIO_MT_MODIFY) /* modify */
1354 do { *((volatile sig_atomic_t *)addr) |= 0; } while ((addr += page) < len && !EIO_CANCELLED (req));
1355 else
1356 do { *((volatile sig_atomic_t *)addr) ; } while ((addr += page) < len && !EIO_CANCELLED (req));
1357 }
1358
1359 return 0;
1360}
1361
1362/*****************************************************************************/
1363/* requests implemented outside eio_execute, because they are so large */
1364
1365/* copies some absolute path to tmpbuf */
1366static char *
1367eio__getwd (struct tmpbuf *tmpbuf, eio_wd wd)
1368{
1369 if (wd == EIO_CWD)
1370 return getcwd (tmpbuf->ptr, PATH_MAX);
1371
1372#if HAVE_AT
1373 abort (); /*TODO*/
1374#else
1375 strcpy (tmpbuf->ptr, wd);
1376#endif
1377 return tmpbuf->ptr;
1378}
1379
1380/* result will always end up in tmpbuf, there is always space for adding a 0-byte */
1381static int
1382eio__realpath (struct tmpbuf *tmpbuf, eio_wd wd, const char *path)
1383{
1384 const char *rel = path;
1385 char *res;
1386 char *tmp1, *tmp2;
1387#if SYMLOOP_MAX > 32
1388 int symlinks = SYMLOOP_MAX;
1389#else
1390 int symlinks = 32;
1391#endif
1392
1393 /*D*/ /*TODO: wd ignored */
1394
1395 errno = EINVAL;
1396 if (!rel)
1397 return -1;
1398
1399 errno = ENOENT;
1400 if (!*rel)
1401 return -1;
1402
1403 res = tmpbuf_get (tmpbuf, PATH_MAX * 3);
1404 tmp1 = res + PATH_MAX;
1405 tmp2 = tmp1 + PATH_MAX;
1406
1407#if 0 /* disabled, the musl way to do things is just too racy */
1408#if __linux && defined(O_NONBLOCK) && defined(O_NOATIME)
1409 /* on linux we may be able to ask the kernel */
1410 {
1411 int fd = open (rel, O_RDONLY | O_NONBLOCK | O_NOCTTY | O_NOATIME);
1412
1413 if (fd >= 0)
1414 {
1415 sprintf (tmp1, "/proc/self/fd/%d", fd);
1416 req->result = readlink (tmp1, res, PATH_MAX);
1417 close (fd);
1418
1419 /* here we should probably stat the open file and the disk file, to make sure they still match */
1420
1421 if (req->result > 0)
1422 goto done;
1423 }
1424 else if (errno == ELOOP || errno == ENAMETOOLONG || errno == ENOENT || errno == ENOTDIR || errno == EIO)
1425 return;
1426 }
1427#endif
1428#endif
1429
1430 if (*rel != '/')
1431 {
1432 if (!eio__getwd (tmpbuf, wd))
1433 return -1;
1434
1435 if (res [1]) /* only use if not / */
1436 res += strlen (res);
1437 }
1438
1439 while (*rel)
1440 {
1441 eio_ssize_t len, linklen;
1442 const char *beg = rel;
1443
1444 while (*rel && *rel != '/')
1445 ++rel;
1446
1447 len = rel - beg;
1448
1449 if (!len) /* skip slashes */
1450 {
1451 ++rel;
1452 continue;
1453 }
1454
1455 if (beg [0] == '.')
1456 {
1457 if (len == 1)
1458 continue; /* . - nop */
1459
1460 if (beg [1] == '.' && len == 2)
1461 {
1462 /* .. - back up one component, if possible */
1463
1464 while (res != tmpbuf->ptr)
1465 if (*--res == '/')
1466 break;
1467
1468 continue;
1469 }
1470 }
1471
1472 errno = ENAMETOOLONG;
1473 if (res + 1 + len + 1 >= tmp1)
1474 return;
1475
1476 /* copy one component */
1477 *res = '/';
1478 memcpy (res + 1, beg, len);
1479
1480 /* zero-terminate, for readlink */
1481 res [len + 1] = 0;
1482
1483 /* now check if it's a symlink */
1484 linklen = readlink (tmpbuf->ptr, tmp1, PATH_MAX);
1485
1486 if (linklen < 0)
1487 {
1488 if (errno != EINVAL)
1489 return -1;
1490
1491 /* it's a normal directory. hopefully */
1492 res += len + 1;
1493 }
1494 else
1495 {
1496 /* yay, it was a symlink - build new path in tmp2 */
1497 int rellen = strlen (rel);
1498
1499 errno = ENAMETOOLONG;
1500 if (linklen + 1 + rellen >= PATH_MAX)
1501 return -1;
1502
1503 errno = ELOOP;
1504 if (!--symlinks)
1505 return -1;
1506
1507 if (*tmp1 == '/')
1508 res = tmpbuf->ptr; /* symlink resolves to an absolute path */
1509
1510 /* we need to be careful, as rel might point into tmp2 already */
1511 memmove (tmp2 + linklen + 1, rel, rellen + 1);
1512 tmp2 [linklen] = '/';
1513 memcpy (tmp2, tmp1, linklen);
1514
1515 rel = tmp2;
1516 }
1517 }
1518
1519 /* special case for the lone root path */
1520 if (res == tmpbuf->ptr)
1521 *res++ = '/';
1522
1523 return res - (char *)tmpbuf->ptr;
1524}
1525
1526static signed char
1527eio_dent_cmp (const eio_dirent *a, const eio_dirent *b)
1528{
1529 return a->score - b->score ? a->score - b->score /* works because our signed char is always 0..100 */
1530 : a->inode < b->inode ? -1
1531 : a->inode > b->inode ? 1
1532 : 0;
1533}
1534
1535#define EIO_DENT_CMP(i,op,j) eio_dent_cmp (&i, &j) op 0
1536
1537#define EIO_SORT_CUTOFF 30 /* quite high, but performs well on many filesystems */
1538#define EIO_SORT_FAST 60 /* when to only use insertion sort */
1539
1540static void
1541eio_dent_radix_sort (eio_dirent *dents, int size, signed char score_bits, eio_ino_t inode_bits)
1542{
1543 unsigned char bits [9 + sizeof (eio_ino_t) * 8];
1544 unsigned char *bit = bits;
1545
1546 assert (CHAR_BIT == 8);
1547 assert (sizeof (eio_dirent) * 8 < 256);
1548 assert (offsetof (eio_dirent, inode)); /* we use bit #0 as sentinel */
1549 assert (offsetof (eio_dirent, score)); /* we use bit #0 as sentinel */
1550
1551 if (size <= EIO_SORT_FAST)
1552 return;
1553
1554 /* first prepare an array of bits to test in our radix sort */
1555 /* try to take endianness into account, as well as differences in eio_ino_t sizes */
1556 /* inode_bits must contain all inodes ORed together */
1557 /* which is used to skip bits that are 0 everywhere, which is very common */
1558 {
1559 eio_ino_t endianness;
1560 int i, j;
1561
1562 /* we store the byte offset of byte n into byte n of "endianness" */
1563 for (i = 0; i < sizeof (eio_ino_t); ++i)
1564 ((unsigned char *)&endianness)[i] = i;
1565
1566 *bit++ = 0;
1567
1568 for (i = 0; i < sizeof (eio_ino_t); ++i)
1569 {
1570 /* shifting off the byte offsets out of "endianness" */
1571 int offs = (offsetof (eio_dirent, inode) + (endianness & 0xff)) * 8;
1572 endianness >>= 8;
1573
1574 for (j = 0; j < 8; ++j)
1575 if (inode_bits & (((eio_ino_t)1) << (i * 8 + j)))
1576 *bit++ = offs + j;
1577 }
1578
1579 for (j = 0; j < 8; ++j)
1580 if (score_bits & (1 << j))
1581 *bit++ = offsetof (eio_dirent, score) * 8 + j;
1582 }
1583
1584 /* now actually do the sorting (a variant of MSD radix sort) */
1585 {
1586 eio_dirent *base_stk [9 + sizeof (eio_ino_t) * 8], *base;
1587 eio_dirent *end_stk [9 + sizeof (eio_ino_t) * 8], *end;
1588 unsigned char *bit_stk [9 + sizeof (eio_ino_t) * 8];
1589 int stk_idx = 0;
1590
1591 base_stk [stk_idx] = dents;
1592 end_stk [stk_idx] = dents + size;
1593 bit_stk [stk_idx] = bit - 1;
1594
1595 do
1596 {
1597 base = base_stk [stk_idx];
1598 end = end_stk [stk_idx];
1599 bit = bit_stk [stk_idx];
1600
1601 for (;;)
1602 {
1603 unsigned char O = *bit >> 3;
1604 unsigned char M = 1 << (*bit & 7);
1605
1606 eio_dirent *a = base;
1607 eio_dirent *b = end;
1608
1609 if (b - a < EIO_SORT_CUTOFF)
1610 break;
1611
1612 /* now bit-partition the array on the bit */
1613 /* this ugly asymmetric loop seems to perform much better than typical */
1614 /* partition algos found in the literature */
1615 do
1616 if (!(((unsigned char *)a)[O] & M))
1617 ++a;
1618 else if (!(((unsigned char *)--b)[O] & M))
1619 {
1620 eio_dirent tmp = *a; *a = *b; *b = tmp;
1621 ++a;
1622 }
1623 while (b > a);
1624
1625 /* next bit, or stop, if no bits left in this path */
1626 if (!*--bit)
1627 break;
1628
1629 base_stk [stk_idx] = a;
1630 end_stk [stk_idx] = end;
1631 bit_stk [stk_idx] = bit;
1632 ++stk_idx;
1633
1634 end = a;
1635 }
1636 }
1637 while (stk_idx--);
1638 }
1639}
1640
1641static void
1642eio_dent_insertion_sort (eio_dirent *dents, int size)
1643{
1644 /* first move the smallest element to the front, to act as a sentinel */
1645 {
1646 int i;
1647 eio_dirent *min = dents;
1648
1649 /* the radix pre-pass ensures that the minimum element is in the first EIO_SORT_CUTOFF + 1 elements */
1650 for (i = size > EIO_SORT_FAST ? EIO_SORT_CUTOFF + 1 : size; --i; )
1651 if (EIO_DENT_CMP (dents [i], <, *min))
1652 min = &dents [i];
1653
1654 /* swap elements 0 and j (minimum) */
1655 {
1656 eio_dirent tmp = *dents; *dents = *min; *min = tmp;
1657 }
1658 }
1659
1660 /* then do standard insertion sort, assuming that all elements are >= dents [0] */
1661 {
1662 eio_dirent *i, *j;
1663
1664 for (i = dents + 1; i < dents + size; ++i)
1665 {
1666 eio_dirent value = *i;
1667
1668 for (j = i - 1; EIO_DENT_CMP (*j, >, value); --j)
1669 j [1] = j [0];
1670
1671 j [1] = value;
1672 }
1673 }
1674}
1675
1676static void
1677eio_dent_sort (eio_dirent *dents, int size, signed char score_bits, eio_ino_t inode_bits)
1678{
1679 if (size <= 1)
1680 return; /* our insertion sort relies on size > 0 */
1681
1682 /* first we use a radix sort, but only for dirs >= EIO_SORT_FAST */
1683 /* and stop sorting when the partitions are <= EIO_SORT_CUTOFF */
1684 eio_dent_radix_sort (dents, size, score_bits, inode_bits);
1685
1686 /* use an insertion sort at the end, or for small arrays, */
1687 /* as insertion sort is more efficient for small partitions */
1688 eio_dent_insertion_sort (dents, size);
894} 1689}
895 1690
896/* read a full directory */ 1691/* read a full directory */
897static void 1692static void
898eio__scandir (eio_req *req, etp_worker *self) 1693eio__scandir (eio_req *req)
899{ 1694{
1695 char *name, *names;
1696 int namesalloc = 4096 - sizeof (void *) * 4;
1697 int namesoffs = 0;
1698 int flags = req->int1;
1699 eio_dirent *dents = 0;
1700 int dentalloc = 128;
1701 int dentoffs = 0;
1702 eio_ino_t inode_bits = 0;
1703#ifdef _WIN32
1704 HANDLE dirp;
1705 WIN32_FIND_DATA entp;
1706#else
900 DIR *dirp; 1707 DIR *dirp;
901 EIO_STRUCT_DIRENT *entp; 1708 EIO_STRUCT_DIRENT *entp;
902 char *name, *names; 1709#endif
903 int memlen = 4096;
904 int memofs = 0;
905 int res = 0;
906 1710
907 X_LOCK (wrklock); 1711 req->result = -1;
908 self->dirp = dirp = opendir (req->ptr1);
909 req->flags |= EIO_FLAG_PTR2_FREE;
910 req->ptr2 = names = malloc (memlen);
911 X_UNLOCK (wrklock);
912 1712
913 if (dirp && names) 1713 if (!(flags & EIO_READDIR_DENTS))
914 for (;;) 1714 flags &= ~(EIO_READDIR_DIRS_FIRST | EIO_READDIR_STAT_ORDER);
1715
1716#ifdef _WIN32
1717 {
1718 int len = strlen ((const char *)req->ptr1);
1719 char *path = malloc (MAX_PATH);
1720 const char *fmt;
1721
1722 if (!len)
1723 fmt = "./*";
1724 else if (((const char *)req->ptr1)[len - 1] == '/' || ((const char *)req->ptr1)[len - 1] == '\\')
1725 fmt = "%s*";
1726 else
1727 fmt = "%s/*";
1728
1729 _snprintf (path, MAX_PATH, fmt, (const char *)req->ptr1);
1730 dirp = FindFirstFile (path, &entp);
1731 free (path);
1732
1733 if (dirp == INVALID_HANDLE_VALUE)
915 { 1734 {
1735 /* should steal _dosmaperr */
1736 switch (GetLastError ())
1737 {
1738 case ERROR_FILE_NOT_FOUND:
1739 req->result = 0;
1740 break;
1741
1742 case ERROR_INVALID_NAME:
1743 case ERROR_PATH_NOT_FOUND:
1744 case ERROR_NO_MORE_FILES:
1745 errno = ENOENT;
1746 break;
1747
1748 case ERROR_NOT_ENOUGH_MEMORY:
1749 errno = ENOMEM;
1750 break;
1751
1752 default:
1753 errno = EINVAL;
1754 break;
1755 }
1756
1757 return;
1758 }
1759 }
1760#else
1761 dirp = opendir (req->ptr1);
1762
1763 if (!dirp)
1764 return;
1765#endif
1766
1767 if (req->flags & EIO_FLAG_PTR1_FREE)
1768 free (req->ptr1);
1769
1770 req->flags |= EIO_FLAG_PTR1_FREE | EIO_FLAG_PTR2_FREE;
1771 req->ptr1 = dents = flags ? malloc (dentalloc * sizeof (eio_dirent)) : 0;
1772 req->ptr2 = names = malloc (namesalloc);
1773
1774 if (!names || (flags && !dents))
1775 return;
1776
1777 for (;;)
1778 {
1779 int done;
1780
1781#ifdef _WIN32
1782 done = !dirp;
1783#else
916 errno = 0; 1784 errno = 0;
917 entp = readdir (dirp); 1785 entp = readdir (dirp);
1786 done = !entp;
1787#endif
918 1788
1789 if (done)
1790 {
1791#ifndef _WIN32
1792 int old_errno = errno;
1793 closedir (dirp);
1794 errno = old_errno;
1795
919 if (!entp) 1796 if (errno)
1797 break;
1798#endif
1799
1800 /* sort etc. */
1801 req->int1 = flags;
1802 req->result = dentoffs;
1803
1804 if (flags & EIO_READDIR_STAT_ORDER)
1805 eio_dent_sort (dents, dentoffs, flags & EIO_READDIR_DIRS_FIRST ? 7 : 0, inode_bits);
1806 else if (flags & EIO_READDIR_DIRS_FIRST)
1807 if (flags & EIO_READDIR_FOUND_UNKNOWN)
1808 eio_dent_sort (dents, dentoffs, 7, inode_bits); /* sort by score and inode */
1809 else
1810 {
1811 /* in this case, all is known, and we just put dirs first and sort them */
1812 eio_dirent *oth = dents + dentoffs;
1813 eio_dirent *dir = dents;
1814
1815 /* now partition dirs to the front, and non-dirs to the back */
1816 /* by walking from both sides and swapping if necessary */
1817 while (oth > dir)
1818 {
1819 if (dir->type == EIO_DT_DIR)
1820 ++dir;
1821 else if ((--oth)->type == EIO_DT_DIR)
1822 {
1823 eio_dirent tmp = *dir; *dir = *oth; *oth = tmp;
1824
1825 ++dir;
1826 }
1827 }
1828
1829 /* now sort the dirs only (dirs all have the same score) */
1830 eio_dent_sort (dents, dir - dents, 0, inode_bits);
1831 }
1832
920 break; 1833 break;
1834 }
921 1835
922 name = entp->d_name; 1836 /* now add the entry to our list(s) */
1837 name = D_NAME (entp);
923 1838
1839 /* skip . and .. entries */
924 if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2]))) 1840 if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
925 { 1841 {
926 int len = strlen (name) + 1; 1842 int len = D_NAMLEN (entp) + 1;
927 1843
928 res++; 1844 while (ecb_expect_false (namesoffs + len > namesalloc))
929
930 while (memofs + len > memlen)
931 { 1845 {
932 memlen *= 2; 1846 namesalloc *= 2;
933 X_LOCK (wrklock);
934 req->ptr2 = names = realloc (names, memlen); 1847 req->ptr2 = names = realloc (names, namesalloc);
935 X_UNLOCK (wrklock);
936 1848
937 if (!names) 1849 if (!names)
1850 break;
1851 }
1852
1853 memcpy (names + namesoffs, name, len);
1854
1855 if (dents)
1856 {
1857 struct eio_dirent *ent;
1858
1859 if (ecb_expect_false (dentoffs == dentalloc))
1860 {
1861 dentalloc *= 2;
1862 req->ptr1 = dents = realloc (dents, dentalloc * sizeof (eio_dirent));
1863
1864 if (!dents)
938 break; 1865 break;
939 } 1866 }
940 1867
941 memcpy (names + memofs, name, len); 1868 ent = dents + dentoffs;
942 memofs += len; 1869
1870 ent->nameofs = namesoffs; /* rather dirtily we store the offset in the pointer */
1871 ent->namelen = len - 1;
1872 ent->inode = D_INO (entp);
1873
1874 inode_bits |= ent->inode;
1875
1876 switch (D_TYPE (entp))
1877 {
1878 default:
1879 ent->type = EIO_DT_UNKNOWN;
1880 flags |= EIO_READDIR_FOUND_UNKNOWN;
1881 break;
1882
1883 #ifdef DT_FIFO
1884 case DT_FIFO: ent->type = EIO_DT_FIFO; break;
1885 #endif
1886 #ifdef DT_CHR
1887 case DT_CHR: ent->type = EIO_DT_CHR; break;
1888 #endif
1889 #ifdef DT_MPC
1890 case DT_MPC: ent->type = EIO_DT_MPC; break;
1891 #endif
1892 #ifdef DT_DIR
1893 case DT_DIR: ent->type = EIO_DT_DIR; break;
1894 #endif
1895 #ifdef DT_NAM
1896 case DT_NAM: ent->type = EIO_DT_NAM; break;
1897 #endif
1898 #ifdef DT_BLK
1899 case DT_BLK: ent->type = EIO_DT_BLK; break;
1900 #endif
1901 #ifdef DT_MPB
1902 case DT_MPB: ent->type = EIO_DT_MPB; break;
1903 #endif
1904 #ifdef DT_REG
1905 case DT_REG: ent->type = EIO_DT_REG; break;
1906 #endif
1907 #ifdef DT_NWK
1908 case DT_NWK: ent->type = EIO_DT_NWK; break;
1909 #endif
1910 #ifdef DT_CMP
1911 case DT_CMP: ent->type = EIO_DT_CMP; break;
1912 #endif
1913 #ifdef DT_LNK
1914 case DT_LNK: ent->type = EIO_DT_LNK; break;
1915 #endif
1916 #ifdef DT_SOCK
1917 case DT_SOCK: ent->type = EIO_DT_SOCK; break;
1918 #endif
1919 #ifdef DT_DOOR
1920 case DT_DOOR: ent->type = EIO_DT_DOOR; break;
1921 #endif
1922 #ifdef DT_WHT
1923 case DT_WHT: ent->type = EIO_DT_WHT; break;
1924 #endif
1925 }
1926
1927 ent->score = 7;
1928
1929 if (flags & EIO_READDIR_DIRS_FIRST)
1930 {
1931 if (ent->type == EIO_DT_UNKNOWN)
1932 {
1933 if (*name == '.') /* leading dots are likely directories, and, in any case, rare */
1934 ent->score = 1;
1935 else if (!strchr (name, '.')) /* absense of dots indicate likely dirs */
1936 ent->score = len <= 2 ? 4 - len : len <= 4 ? 4 : len <= 7 ? 5 : 6; /* shorter == more likely dir, but avoid too many classes */
1937 }
1938 else if (ent->type == EIO_DT_DIR)
1939 ent->score = 0;
1940 }
943 } 1941 }
1942
1943 namesoffs += len;
1944 ++dentoffs;
944 } 1945 }
945 1946
946 if (errno) 1947 if (EIO_CANCELLED (req))
947 res = -1; 1948 {
1949 errno = ECANCELED;
1950 break;
1951 }
1952
1953#ifdef _WIN32
1954 if (!FindNextFile (dirp, &entp))
1955 {
1956 FindClose (dirp);
1957 dirp = 0;
1958 }
1959#endif
1960 }
1961}
1962
1963/*****************************************************************************/
1964/* working directory stuff */
1965
1966#if HAVE_AT
1967
1968#define WD2FD(wd) (wd ? ((int)wd) - 1 : AT_FDCWD)
1969
1970eio_wd
1971eio_wd_open_sync (eio_wd wd, const char *path)
1972{
1973 int fd = openat (WD2FD (wd), path, O_CLOEXEC | O_SEARCH | O_DIRECTORY);
1974
1975 return fd >= 0 ? (eio_wd)(fd + 1) : EIO_INVALID_WD;
1976}
1977
1978void
1979eio_wd_close_sync (eio_wd wd)
1980{
1981 int fd = WD2FD (wd);
1982
1983 if (fd >= 0)
1984 close (fd);
1985}
1986
1987#else
1988
1989/* on legacy systems, we represent the working directories simply by their path strings */
1990
1991static const char *
1992wd_expand (struct tmpbuf *tmpbuf, eio_wd wd, const char *path)
1993{
1994 if (!wd || *path == '/')
1995 return path;
1996
948 1997 {
949 req->result = res; 1998 int l1 = strlen ((const char *)wd);
1999 int l2 = strlen (path);
2000
2001 char *res = tmpbuf_get (tmpbuf, l1 + l2 + 2);
2002
2003 memcpy (res, wd, l1);
2004 res [l1] = '/';
2005 memcpy (res + l1 + 1, path, l2 + 1);
2006
2007 return res;
2008 }
950} 2009}
2010
2011eio_wd
2012eio__wd_open_sync (struct tmpbuf *tmpbuf, eio_wd wd, const char *path)
2013{
2014 if (*path == '/') /* absolute paths ignore wd */
2015 path = strdup (path);
2016 else if (path [0] == '.' && !path [1]) /* special case '.', as it is common */
2017 return wd;
2018 else
2019 {
2020 int len = eio__realpath (tmpbuf, wd, path);
2021
2022 path = EIO_INVALID_WD;
2023
2024 if (len >= 0)
2025 {
2026 ((char *)tmpbuf->ptr)[len] = 0;
2027 path = strdup (tmpbuf->ptr);
2028 }
2029 }
2030
2031 if (!path)
2032 path = EIO_INVALID_WD;
2033
2034 return (eio_wd)path;
2035}
2036
2037eio_wd
2038eio_wd_open_sync (eio_wd wd, const char *path)
2039{
2040 struct tmpbuf tmpbuf = { 0 };
2041 wd = eio__wd_open_sync (&tmpbuf, wd, path);
2042 free (tmpbuf.ptr);
2043
2044 return wd;
2045}
2046
2047void
2048eio_wd_close_sync (eio_wd wd)
2049{
2050 if (wd != EIO_INVALID_WD)
2051 free (wd);
2052}
2053
2054#endif
951 2055
952/*****************************************************************************/ 2056/*****************************************************************************/
953 2057
954#define ALLOC(len) \ 2058#define ALLOC(len) \
955 if (!req->ptr2) \ 2059 if (!req->ptr2) \
… …
970{ 2074{
971 ETP_REQ *req; 2075 ETP_REQ *req;
972 struct timespec ts; 2076 struct timespec ts;
973 etp_worker *self = (etp_worker *)thr_arg; 2077 etp_worker *self = (etp_worker *)thr_arg;
974 2078
2079#if HAVE_PRCTL_SET_NAME
2080 prctl (PR_SET_NAME, (unsigned long)"eio_thread", 0, 0, 0);
2081#endif
2082
975 /* try to distribute timeouts somewhat randomly */ 2083 /* try to distribute timeouts somewhat evenly */
976 ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL); 2084 ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL);
977 2085
978 for (;;) 2086 for (;;)
979 { 2087 {
2088 ts.tv_sec = 0;
2089
980 X_LOCK (reqlock); 2090 X_LOCK (reqlock);
981 2091
982 for (;;) 2092 for (;;)
983 { 2093 {
984 self->req = req = reqq_shift (&req_queue); 2094 req = reqq_shift (&req_queue);
985 2095
986 if (req) 2096 if (req)
987 break; 2097 break;
988 2098
2099 if (ts.tv_sec == 1) /* no request, but timeout detected, let's quit */
2100 {
2101 X_UNLOCK (reqlock);
2102 X_LOCK (wrklock);
2103 --started;
2104 X_UNLOCK (wrklock);
2105 goto quit;
2106 }
2107
989 ++idle; 2108 ++idle;
990 2109
991 ts.tv_sec = time (0) + IDLE_TIMEOUT; 2110 if (idle <= max_idle)
992 if (X_COND_TIMEDWAIT (reqwait, reqlock, ts) == ETIMEDOUT) 2111 /* we are allowed to idle, so do so without any timeout */
2112 X_COND_WAIT (reqwait, reqlock);
2113 else
993 { 2114 {
994 if (idle > max_idle) 2115 /* initialise timeout once */
995 { 2116 if (!ts.tv_sec)
996 --idle; 2117 ts.tv_sec = time (0) + idle_timeout;
997 X_UNLOCK (reqlock);
998 X_LOCK (wrklock);
999 --started;
1000 X_UNLOCK (wrklock);
1001 goto quit;
1002 }
1003 2118
1004 /* we are allowed to idle, so do so without any timeout */
1005 X_COND_WAIT (reqwait, reqlock); 2119 if (X_COND_TIMEDWAIT (reqwait, reqlock, ts) == ETIMEDOUT)
2120 ts.tv_sec = 1; /* assuming this is not a value computed above.,.. */
1006 } 2121 }
1007 2122
1008 --idle; 2123 --idle;
1009 } 2124 }
1010 2125
… …
1013 X_UNLOCK (reqlock); 2128 X_UNLOCK (reqlock);
1014 2129
1015 if (req->type < 0) 2130 if (req->type < 0)
1016 goto quit; 2131 goto quit;
1017 2132
1018 if (!EIO_CANCELLED (req))
1019 ETP_EXECUTE (self, req); 2133 ETP_EXECUTE (self, req);
1020 2134
1021 X_LOCK (reslock); 2135 X_LOCK (reslock);
1022 2136
1023 ++npending; 2137 ++npending;
1024 2138
1025 if (!reqq_push (&res_queue, req) && want_poll_cb) 2139 if (!reqq_push (&res_queue, req) && want_poll_cb)
1026 want_poll_cb (); 2140 want_poll_cb ();
1027 2141
1028 self->req = 0;
1029 etp_worker_clear (self); 2142 etp_worker_clear (self);
1030 2143
1031 X_UNLOCK (reslock); 2144 X_UNLOCK (reslock);
1032 } 2145 }
1033 2146
1034quit: 2147quit:
2148 free (req);
2149
1035 X_LOCK (wrklock); 2150 X_LOCK (wrklock);
1036 etp_worker_free (self); 2151 etp_worker_free (self);
1037 X_UNLOCK (wrklock); 2152 X_UNLOCK (wrklock);
1038 2153
1039 return 0; 2154 return 0;
1040} 2155}
1041 2156
1042/*****************************************************************************/ 2157/*****************************************************************************/
1043 2158
2159int ecb_cold
1044int eio_init (void (*want_poll)(void), void (*done_poll)(void)) 2160eio_init (void (*want_poll)(void), void (*done_poll)(void))
1045{ 2161{
2162#if !HAVE_PREADWRITE
2163 X_MUTEX_CREATE (preadwritelock);
2164#endif
2165
1046 return etp_init (want_poll, done_poll); 2166 return etp_init (want_poll, done_poll);
1047} 2167}
1048 2168
2169ecb_inline void
1049static void eio_api_destroy (eio_req *req) 2170eio_api_destroy (eio_req *req)
1050{ 2171{
1051 free (req); 2172 free (req);
1052} 2173}
1053 2174
1054#define REQ(rtype) \ 2175#define REQ(rtype) \
… …
1073 { \ 2194 { \
1074 eio_api_destroy (req); \ 2195 eio_api_destroy (req); \
1075 return 0; \ 2196 return 0; \
1076 } 2197 }
1077 2198
2199static void
1078static void eio_execute (etp_worker *self, eio_req *req) 2200eio_execute (etp_worker *self, eio_req *req)
1079{ 2201{
1080 errno = 0; 2202#if HAVE_AT
2203 int dirfd;
2204#else
2205 const char *path;
2206#endif
2207
2208 if (ecb_expect_false (EIO_CANCELLED (req)))
2209 {
2210 req->result = -1;
2211 req->errorno = ECANCELED;
2212 return;
2213 }
2214
2215 if (ecb_expect_false (req->wd == EIO_INVALID_WD))
2216 {
2217 req->result = -1;
2218 req->errorno = ENOENT;
2219 return;
2220 }
2221
2222 if (req->type >= EIO_OPEN)
2223 {
2224 #if HAVE_AT
2225 dirfd = WD2FD (req->wd);
2226 #else
2227 path = wd_expand (&self->tmpbuf, req->wd, req->ptr1);
2228 #endif
2229 }
1081 2230
1082 switch (req->type) 2231 switch (req->type)
1083 { 2232 {
2233 case EIO_WD_OPEN: req->wd = eio__wd_open_sync (&self->tmpbuf, req->wd, req->ptr1);
2234 req->result = req->wd == EIO_INVALID_WD ? -1 : 0;
2235 break;
2236 case EIO_WD_CLOSE: eio_wd_close_sync (req->wd); break;
2237
1084 case EIO_READ: ALLOC (req->size); 2238 case EIO_READ: ALLOC (req->size);
1085 req->result = req->offs >= 0 2239 req->result = req->offs >= 0
1086 ? pread (req->int1, req->ptr2, req->size, req->offs) 2240 ? pread (req->int1, req->ptr2, req->size, req->offs)
1087 : read (req->int1, req->ptr2, req->size); break; 2241 : read (req->int1, req->ptr2, req->size); break;
1088 case EIO_WRITE: req->result = req->offs >= 0 2242 case EIO_WRITE: req->result = req->offs >= 0
1089 ? pwrite (req->int1, req->ptr2, req->size, req->offs) 2243 ? pwrite (req->int1, req->ptr2, req->size, req->offs)
1090 : write (req->int1, req->ptr2, req->size); break; 2244 : write (req->int1, req->ptr2, req->size); break;
1091 2245
1092 case EIO_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break; 2246 case EIO_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1093 case EIO_SENDFILE: req->result = eio__sendfile (req->int1, req->int2, req->offs, req->size, self); break; 2247 case EIO_SENDFILE: req->result = eio__sendfile (req->int1, req->int2, req->offs, req->size); break;
1094 2248
2249#if HAVE_AT
2250 case EIO_GETPATH: abort ();
1095 case EIO_STAT: ALLOC (sizeof (EIO_STRUCT_STAT)); 2251 case EIO_STAT: ALLOC (sizeof (EIO_STRUCT_STAT));
1096 req->result = stat (req->ptr1, (EIO_STRUCT_STAT *)req->ptr2); break; 2252 req->result = fstatat (dirfd, path, (EIO_STRUCT_STAT *)req->ptr2); break;
1097 case EIO_LSTAT: ALLOC (sizeof (EIO_STRUCT_STAT)); 2253 case EIO_LSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));
1098 req->result = lstat (req->ptr1, (EIO_STRUCT_STAT *)req->ptr2); break; 2254 req->result = lstat (dirfd, path, (EIO_STRUCT_STAT *)req->ptr2); break;
2255#if 0/*D*/
2256 case EIO_STATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS));
2257 req->result = statvfs (dirfd, path, (EIO_STRUCT_STATVFS *)req->ptr2); break;
2258#endif
2259 case EIO_CHOWN: req->result = chown (dirfd, path, req->int2, req->int3); break;
2260 case EIO_CHMOD: req->result = chmod (dirfd, path, (mode_t)req->int2); break;
2261 case EIO_TRUNCATE: req->result = truncate (dirfd, path, req->offs); break;
2262 case EIO_OPEN: req->result = open (dirfd, path, req->int1, (mode_t)req->int2); break;
2263
2264 case EIO_UNLINK: req->result = unlink (dirfd, path); break;
2265 case EIO_RMDIR: req->result = rmdir (dirfd, path); break;
2266 case EIO_MKDIR: req->result = mkdir (dirfd, path, (mode_t)req->int2); break;
2267 case EIO_RENAME: req->result = rename (dirfd, path, req->ptr2); break;
2268 case EIO_LINK: req->result = link (dirfd, path, req->ptr2); break;
2269 case EIO_SYMLINK: req->result = symlink (dirfd, path, req->ptr2); break;
2270 case EIO_MKNOD: req->result = mknod (dirfd, path, (mode_t)req->int2, (dev_t)req->offs); break;
2271#else
2272 case EIO_STAT: ALLOC (sizeof (EIO_STRUCT_STAT));
2273 req->result = stat (path , (EIO_STRUCT_STAT *)req->ptr2); break;
2274 case EIO_LSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));
2275 req->result = lstat (path , (EIO_STRUCT_STAT *)req->ptr2); break;
2276 case EIO_CHOWN: req->result = chown (path , req->int2, req->int3); break;
2277 case EIO_CHMOD: req->result = chmod (path , (mode_t)req->int2); break;
2278 case EIO_TRUNCATE: req->result = truncate (path , req->offs); break;
2279 case EIO_OPEN: req->result = open (path , req->int1, (mode_t)req->int2); break;
2280
2281 case EIO_UNLINK: req->result = unlink (path ); break;
2282 case EIO_RMDIR: req->result = rmdir (path ); break;
2283 case EIO_MKDIR: req->result = mkdir (path , (mode_t)req->int2); break;
2284 case EIO_RENAME: req->result = rename (path , req->ptr2); break;
2285 case EIO_LINK: req->result = link (path , req->ptr2); break;
2286 case EIO_SYMLINK: req->result = symlink (path , req->ptr2); break;
2287 case EIO_MKNOD: req->result = mknod (path , (mode_t)req->int2, (dev_t)req->offs); break;
2288
2289 case EIO_READLINK: ALLOC (PATH_MAX);
2290 req->result = readlink (path, req->ptr2, PATH_MAX); break;
2291#endif
2292
2293 case EIO_REALPATH: if (0 <= (req->result = eio__realpath (&self->tmpbuf, req->wd, req->ptr1)))
2294 {
2295 ALLOC (req->result);
2296 memcpy (req->ptr2, self->tmpbuf.ptr, req->result);
2297 }
2298 break;
2299
2300 case EIO_STATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS)); /*D*/
2301 req->result = statvfs (path , (EIO_STRUCT_STATVFS *)req->ptr2); break;
2302
1099 case EIO_FSTAT: ALLOC (sizeof (EIO_STRUCT_STAT)); 2303 case EIO_FSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));
1100 req->result = fstat (req->int1, (EIO_STRUCT_STAT *)req->ptr2); break; 2304 req->result = fstat (req->int1, (EIO_STRUCT_STAT *)req->ptr2); break;
1101 2305
1102 case EIO_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break; 2306 case EIO_FSTATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS));
2307 req->result = fstatvfs (req->int1, (EIO_STRUCT_STATVFS *)req->ptr2); break;
2308
1103 case EIO_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break; 2309 case EIO_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
1104 case EIO_CHMOD: req->result = chmod (req->ptr1, (mode_t)req->int2); break;
1105 case EIO_FCHMOD: req->result = fchmod (req->int1, (mode_t)req->int2); break; 2310 case EIO_FCHMOD: req->result = fchmod (req->int1, (mode_t)req->int2); break;
1106 case EIO_TRUNCATE: req->result = truncate (req->ptr1, req->offs); break;
1107 case EIO_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break; 2311 case EIO_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break;
1108 2312
1109 case EIO_OPEN: req->result = open (req->ptr1, req->int1, (mode_t)req->int2); break;
1110 case EIO_CLOSE: req->result = close (req->int1); break; 2313 case EIO_CLOSE: req->result = close (req->int1); break;
1111 case EIO_DUP2: req->result = dup2 (req->int1, req->int2); break; 2314 case EIO_DUP2: req->result = dup2 (req->int1, req->int2); break;
1112 case EIO_UNLINK: req->result = unlink (req->ptr1); break;
1113 case EIO_RMDIR: req->result = rmdir (req->ptr1); break;
1114 case EIO_MKDIR: req->result = mkdir (req->ptr1, (mode_t)req->int2); break;
1115 case EIO_RENAME: req->result = rename (req->ptr1, req->ptr2); break;
1116 case EIO_LINK: req->result = link (req->ptr1, req->ptr2); break;
1117 case EIO_SYMLINK: req->result = symlink (req->ptr1, req->ptr2); break;
1118 case EIO_MKNOD: req->result = mknod (req->ptr1, (mode_t)req->int2, (dev_t)req->int3); break;
1119
1120 case EIO_READLINK: ALLOC (NAME_MAX);
1121 req->result = readlink (req->ptr1, req->ptr2, NAME_MAX); break;
1122
1123 case EIO_SYNC: req->result = 0; sync (); break; 2315 case EIO_SYNC: req->result = 0; sync (); break;
1124 case EIO_FSYNC: req->result = fsync (req->int1); break; 2316 case EIO_FSYNC: req->result = fsync (req->int1); break;
1125 case EIO_FDATASYNC: req->result = fdatasync (req->int1); break; 2317 case EIO_FDATASYNC: req->result = fdatasync (req->int1); break;
2318 case EIO_SYNCFS: req->result = eio__syncfs (req->int1); break;
2319 case EIO_SYNC_FILE_RANGE: req->result = eio__sync_file_range (req->int1, req->offs, req->size, req->int2); break;
2320 case EIO_MSYNC: req->result = eio__msync (req->ptr2, req->size, req->int1); break;
2321 case EIO_MTOUCH: req->result = eio__mtouch (req); break;
2322 case EIO_MLOCK: req->result = eio__mlock (req->ptr2, req->size); break;
2323 case EIO_MLOCKALL: req->result = eio__mlockall (req->int1); break;
2324 case EIO_FALLOCATE: req->result = eio__fallocate (req->int1, req->int2, req->offs, req->size); break;
1126 2325
1127 case EIO_READDIR: eio__scandir (req, self); break; 2326 case EIO_READDIR: eio__scandir (req); break;
1128 2327
1129 case EIO_BUSY: 2328 case EIO_BUSY:
1130#ifdef _WIN32 2329#ifdef _WIN32
1131 Sleep (req->nv1 * 1000.); 2330 Sleep (req->nv1 * 1e3);
1132#else 2331#else
1133 { 2332 {
1134 struct timeval tv; 2333 struct timeval tv;
1135 2334
1136 tv.tv_sec = req->nv1; 2335 tv.tv_sec = req->nv1;
1137 tv.tv_usec = (req->nv1 - tv.tv_sec) * 1000000.; 2336 tv.tv_usec = (req->nv1 - tv.tv_sec) * 1e6;
1138 2337
1139 req->result = select (0, 0, 0, 0, &tv); 2338 req->result = select (0, 0, 0, 0, &tv);
1140 } 2339 }
1141#endif 2340#endif
1142 break; 2341 break;
… …
1157 times = tv; 2356 times = tv;
1158 } 2357 }
1159 else 2358 else
1160 times = 0; 2359 times = 0;
1161 2360
1162
1163 req->result = req->type == EIO_FUTIME 2361 req->result = req->type == EIO_FUTIME
1164 ? futimes (req->int1, times) 2362 ? futimes (req->int1, times)
1165 : utimes (req->ptr1, times); 2363 : utimes (req->ptr1, times);
1166 } 2364 }
2365 break;
1167 2366
1168 case EIO_GROUP: 2367 case EIO_GROUP:
2368 abort (); /* handled in eio_request */
2369
1169 case EIO_NOP: 2370 case EIO_NOP:
1170 req->result = 0; 2371 req->result = 0;
1171 break; 2372 break;
1172 2373
1173 case EIO_CUSTOM: 2374 case EIO_CUSTOM:
1174 req->feed (req); 2375 req->feed (req);
1175 break; 2376 break;
1176 2377
1177 default: 2378 default:
2379 errno = ENOSYS;
1178 req->result = -1; 2380 req->result = -1;
1179 break; 2381 break;
1180 } 2382 }
1181 2383
1182 req->errorno = errno; 2384 req->errorno = errno;
… …
1202eio_req *eio_fsync (int fd, int pri, eio_cb cb, void *data) 2404eio_req *eio_fsync (int fd, int pri, eio_cb cb, void *data)
1203{ 2405{
1204 REQ (EIO_FSYNC); req->int1 = fd; SEND; 2406 REQ (EIO_FSYNC); req->int1 = fd; SEND;
1205} 2407}
1206 2408
2409eio_req *eio_msync (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data)
2410{
2411 REQ (EIO_MSYNC); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND;
2412}
2413
1207eio_req *eio_fdatasync (int fd, int pri, eio_cb cb, void *data) 2414eio_req *eio_fdatasync (int fd, int pri, eio_cb cb, void *data)
1208{ 2415{
1209 REQ (EIO_FDATASYNC); req->int1 = fd; SEND; 2416 REQ (EIO_FDATASYNC); req->int1 = fd; SEND;
1210} 2417}
1211 2418
2419eio_req *eio_syncfs (int fd, int pri, eio_cb cb, void *data)
2420{
2421 REQ (EIO_SYNCFS); req->int1 = fd; SEND;
2422}
2423
2424eio_req *eio_sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags, int pri, eio_cb cb, void *data)
2425{
2426 REQ (EIO_SYNC_FILE_RANGE); req->int1 = fd; req->offs = offset; req->size = nbytes; req->int2 = flags; SEND;
2427}
2428
2429eio_req *eio_mtouch (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data)
2430{
2431 REQ (EIO_MTOUCH); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND;
2432}
2433
2434eio_req *eio_mlock (void *addr, size_t length, int pri, eio_cb cb, void *data)
2435{
2436 REQ (EIO_MLOCK); req->ptr2 = addr; req->size = length; SEND;
2437}
2438
2439eio_req *eio_mlockall (int flags, int pri, eio_cb cb, void *data)
2440{
2441 REQ (EIO_MLOCKALL); req->int1 = flags; SEND;
2442}
2443
2444eio_req *eio_fallocate (int fd, int mode, off_t offset, size_t len, int pri, eio_cb cb, void *data)
2445{
2446 REQ (EIO_FALLOCATE); req->int1 = fd; req->int2 = mode; req->offs = offset; req->size = len; SEND;
2447}
2448
1212eio_req *eio_close (int fd, int pri, eio_cb cb, void *data) 2449eio_req *eio_close (int fd, int pri, eio_cb cb, void *data)
1213{ 2450{
1214 REQ (EIO_CLOSE); req->int1 = fd; SEND; 2451 REQ (EIO_CLOSE); req->int1 = fd; SEND;
1215} 2452}
1216 2453
… …
1232eio_req *eio_fstat (int fd, int pri, eio_cb cb, void *data) 2469eio_req *eio_fstat (int fd, int pri, eio_cb cb, void *data)
1233{ 2470{
1234 REQ (EIO_FSTAT); req->int1 = fd; SEND; 2471 REQ (EIO_FSTAT); req->int1 = fd; SEND;
1235} 2472}
1236 2473
2474eio_req *eio_fstatvfs (int fd, int pri, eio_cb cb, void *data)
2475{
2476 REQ (EIO_FSTATVFS); req->int1 = fd; SEND;
2477}
2478
1237eio_req *eio_futime (int fd, double atime, double mtime, int pri, eio_cb cb, void *data) 2479eio_req *eio_futime (int fd, double atime, double mtime, int pri, eio_cb cb, void *data)
1238{ 2480{
1239 REQ (EIO_FUTIME); req->int1 = fd; req->nv1 = atime; req->nv2 = mtime; SEND; 2481 REQ (EIO_FUTIME); req->int1 = fd; req->nv1 = atime; req->nv2 = mtime; SEND;
1240} 2482}
1241 2483
… …
1247eio_req *eio_fchmod (int fd, mode_t mode, int pri, eio_cb cb, void *data) 2489eio_req *eio_fchmod (int fd, mode_t mode, int pri, eio_cb cb, void *data)
1248{ 2490{
1249 REQ (EIO_FCHMOD); req->int1 = fd; req->int2 = (long)mode; SEND; 2491 REQ (EIO_FCHMOD); req->int1 = fd; req->int2 = (long)mode; SEND;
1250} 2492}
1251 2493
1252eio_req *eio_fchown (int fd, uid_t uid, gid_t gid, int pri, eio_cb cb, void *data) 2494eio_req *eio_fchown (int fd, eio_uid_t uid, eio_gid_t gid, int pri, eio_cb cb, void *data)
1253{ 2495{
1254 REQ (EIO_FCHOWN); req->int1 = fd; req->int2 = (long)uid; req->int3 = (long)gid; SEND; 2496 REQ (EIO_FCHOWN); req->int1 = fd; req->int2 = (long)uid; req->int3 = (long)gid; SEND;
1255} 2497}
1256 2498
1257eio_req *eio_dup2 (int fd, int fd2, int pri, eio_cb cb, void *data) 2499eio_req *eio_dup2 (int fd, int fd2, int pri, eio_cb cb, void *data)
… …
1277eio_req *eio_truncate (const char *path, off_t offset, int pri, eio_cb cb, void *data) 2519eio_req *eio_truncate (const char *path, off_t offset, int pri, eio_cb cb, void *data)
1278{ 2520{
1279 REQ (EIO_TRUNCATE); PATH; req->offs = offset; SEND; 2521 REQ (EIO_TRUNCATE); PATH; req->offs = offset; SEND;
1280} 2522}
1281 2523
1282eio_req *eio_chown (const char *path, uid_t uid, gid_t gid, int pri, eio_cb cb, void *data) 2524eio_req *eio_chown (const char *path, eio_uid_t uid, eio_gid_t gid, int pri, eio_cb cb, void *data)
1283{ 2525{
1284 REQ (EIO_CHOWN); PATH; req->int2 = (long)uid; req->int3 = (long)gid; SEND; 2526 REQ (EIO_CHOWN); PATH; req->int2 = (long)uid; req->int3 = (long)gid; SEND;
1285} 2527}
1286 2528
1287eio_req *eio_chmod (const char *path, mode_t mode, int pri, eio_cb cb, void *data) 2529eio_req *eio_chmod (const char *path, mode_t mode, int pri, eio_cb cb, void *data)
… …
1303eio_req *eio_readlink (const char *path, int pri, eio_cb cb, void *data) 2545eio_req *eio_readlink (const char *path, int pri, eio_cb cb, void *data)
1304{ 2546{
1305 return eio__1path (EIO_READLINK, path, pri, cb, data); 2547 return eio__1path (EIO_READLINK, path, pri, cb, data);
1306} 2548}
1307 2549
2550eio_req *eio_realpath (const char *path, int pri, eio_cb cb, void *data)
2551{
2552 return eio__1path (EIO_REALPATH, path, pri, cb, data);
2553}
2554
1308eio_req *eio_stat (const char *path, int pri, eio_cb cb, void *data) 2555eio_req *eio_stat (const char *path, int pri, eio_cb cb, void *data)
1309{ 2556{
1310 return eio__1path (EIO_STAT, path, pri, cb, data); 2557 return eio__1path (EIO_STAT, path, pri, cb, data);
1311} 2558}
1312 2559
1313eio_req *eio_lstat (const char *path, int pri, eio_cb cb, void *data) 2560eio_req *eio_lstat (const char *path, int pri, eio_cb cb, void *data)
1314{ 2561{
1315 return eio__1path (EIO_LSTAT, path, pri, cb, data); 2562 return eio__1path (EIO_LSTAT, path, pri, cb, data);
1316} 2563}
1317 2564
2565eio_req *eio_statvfs (const char *path, int pri, eio_cb cb, void *data)
2566{
2567 return eio__1path (EIO_STATVFS, path, pri, cb, data);
2568}
2569
1318eio_req *eio_unlink (const char *path, int pri, eio_cb cb, void *data) 2570eio_req *eio_unlink (const char *path, int pri, eio_cb cb, void *data)
1319{ 2571{
1320 return eio__1path (EIO_UNLINK, path, pri, cb, data); 2572 return eio__1path (EIO_UNLINK, path, pri, cb, data);
1321} 2573}
1322 2574
1323eio_req *eio_rmdir (const char *path, int pri, eio_cb cb, void *data) 2575eio_req *eio_rmdir (const char *path, int pri, eio_cb cb, void *data)
1324{ 2576{
1325 return eio__1path (EIO_RMDIR, path, pri, cb, data); 2577 return eio__1path (EIO_RMDIR, path, pri, cb, data);
1326} 2578}
1327 2579
1328eio_req *eio_readdir (const char *path, int pri, eio_cb cb, void *data) 2580eio_req *eio_readdir (const char *path, int flags, int pri, eio_cb cb, void *data)
1329{ 2581{
1330 return eio__1path (EIO_READDIR, path, pri, cb, data); 2582 REQ (EIO_READDIR); PATH; req->int1 = flags; SEND;
1331} 2583}
1332 2584
1333eio_req *eio_mknod (const char *path, mode_t mode, dev_t dev, int pri, eio_cb cb, void *data) 2585eio_req *eio_mknod (const char *path, mode_t mode, dev_t dev, int pri, eio_cb cb, void *data)
1334{ 2586{
1335 REQ (EIO_MKNOD); PATH; req->int2 = (long)mode; req->int3 = (long)dev; SEND; 2587 REQ (EIO_MKNOD); PATH; req->int2 = (long)mode; req->offs = (off_t)dev; SEND;
1336} 2588}
1337 2589
1338static eio_req * 2590static eio_req *
1339eio__2path (int type, const char *path, const char *new_path, int pri, eio_cb cb, void *data) 2591eio__2path (int type, const char *path, const char *new_path, int pri, eio_cb cb, void *data)
1340{ 2592{
… …
1364eio_req *eio_rename (const char *path, const char *new_path, int pri, eio_cb cb, void *data) 2616eio_req *eio_rename (const char *path, const char *new_path, int pri, eio_cb cb, void *data)
1365{ 2617{
1366 return eio__2path (EIO_RENAME, path, new_path, pri, cb, data); 2618 return eio__2path (EIO_RENAME, path, new_path, pri, cb, data);
1367} 2619}
1368 2620
1369eio_req *eio_custom (eio_cb execute, int pri, eio_cb cb, void *data) 2621eio_req *eio_custom (void (*execute)(eio_req *), int pri, eio_cb cb, void *data)
1370{ 2622{
1371 REQ (EIO_CUSTOM); req->feed = execute; SEND; 2623 REQ (EIO_CUSTOM); req->feed = execute; SEND;
1372} 2624}
1373 2625
1374#endif 2626#endif
… …
1385#undef SEND 2637#undef SEND
1386 2638
1387/*****************************************************************************/ 2639/*****************************************************************************/
1388/* grp functions */ 2640/* grp functions */
1389 2641
2642void
1390void eio_grp_feed (eio_req *grp, void (*feed)(eio_req *req), int limit) 2643eio_grp_feed (eio_req *grp, void (*feed)(eio_req *req), int limit)
1391{ 2644{
1392 grp->int2 = limit; 2645 grp->int2 = limit;
1393 grp->feed = feed; 2646 grp->feed = feed;
1394 2647
1395 grp_try_feed (grp); 2648 grp_try_feed (grp);
1396} 2649}
1397 2650
2651void
1398void eio_grp_limit (eio_req *grp, int limit) 2652eio_grp_limit (eio_req *grp, int limit)
1399{ 2653{
1400 grp->int2 = limit; 2654 grp->int2 = limit;
1401 2655
1402 grp_try_feed (grp); 2656 grp_try_feed (grp);
1403} 2657}
1404 2658
2659void
1405void eio_grp_add (eio_req *grp, eio_req *req) 2660eio_grp_add (eio_req *grp, eio_req *req)
1406{ 2661{
1407 assert (("cannot add requests to IO::AIO::GRP after the group finished", grp->int1 != 2)); 2662 assert (("cannot add requests to IO::AIO::GRP after the group finished", grp->int1 != 2));
2663
2664 grp->flags |= EIO_FLAG_GROUPADD;
1408 2665
1409 ++grp->size; 2666 ++grp->size;
1410 req->grp = grp; 2667 req->grp = grp;
1411 2668
1412 req->grp_prev = 0; 2669 req->grp_prev = 0;
… …
1419} 2676}
1420 2677
1421/*****************************************************************************/ 2678/*****************************************************************************/
1422/* misc garbage */ 2679/* misc garbage */
1423 2680
2681eio_ssize_t
1424ssize_t eio_sendfile_sync (int ofd, int ifd, off_t offset, size_t count) 2682eio_sendfile_sync (int ofd, int ifd, off_t offset, size_t count)
1425{ 2683{
1426 etp_worker wrk;
1427
1428 wrk.dbuf = 0;
1429
1430 eio__sendfile (ofd, ifd, offset, count, &wrk); 2684 return eio__sendfile (ofd, ifd, offset, count);
1431
1432 if (wrk.dbuf)
1433 free (wrk.dbuf);
1434} 2685}
1435 2686

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