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Comparing libeio/eio.c (file contents):
Revision 1.31 by root, Sat Jun 6 17:25:13 2009 UTC vs.
Revision 1.106 by root, Mon Sep 26 20:19:08 2011 UTC

1/* 1/*
2 * libeio implementation 2 * libeio implementation
3 * 3 *
4 * Copyright (c) 2007,2008,2009 Marc Alexander Lehmann <libeio@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010,2011 Marc Alexander Lehmann <libeio@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
… …
35 * and other provisions required by the GPL. If you do not delete the 35 * and other provisions required by the GPL. If you do not delete the
36 * provisions above, a recipient may use your version of this file under 36 * provisions above, a recipient may use your version of this file under
37 * either the BSD or the GPL. 37 * either the BSD or the GPL.
38 */ 38 */
39 39
40#ifndef _WIN32
41# include "config.h"
42#endif
43
40#include "eio.h" 44#include "eio.h"
45#include "ecb.h"
41 46
42#ifdef EIO_STACKSIZE 47#ifdef EIO_STACKSIZE
43# define XTHREAD_STACKSIZE EIO_STACKSIZE 48# define X_STACKSIZE EIO_STACKSIZE
44#endif 49#endif
45#include "xthread.h" 50#include "xthread.h"
46 51
47#include <errno.h> 52#include <errno.h>
48#include <stddef.h> 53#include <stddef.h>
… …
53#include <sys/stat.h> 58#include <sys/stat.h>
54#include <limits.h> 59#include <limits.h>
55#include <fcntl.h> 60#include <fcntl.h>
56#include <assert.h> 61#include <assert.h>
57 62
63#if _POSIX_VERSION >= 200809L
64# define HAVE_AT 1
65#else
66# define HAVE_AT 0
67#endif
68
69/* intptr_t comes from unistd.h, says POSIX/UNIX/tradition */
70/* intptr_t only comes from stdint.h, says idiot openbsd coder */
71#if HAVE_STDINT_H
72# include <stdint.h>
73#endif
74
75#ifndef ECANCELED
76# define ECANCELED EDOM
77#endif
78#ifndef ELOOP
79# define ELOOP EDOM
80#endif
81
82#if !defined(ENOTSOCK) && defined(WSAENOTSOCK)
83# define ENOTSOCK WSAENOTSOCK
84#endif
85
86static void eio_destroy (eio_req *req);
87
58#ifndef EIO_FINISH 88#ifndef EIO_FINISH
59# define EIO_FINISH(req) ((req)->finish) && !EIO_CANCELLED (req) ? (req)->finish (req) : 0 89# define EIO_FINISH(req) ((req)->finish) && !EIO_CANCELLED (req) ? (req)->finish (req) : 0
60#endif 90#endif
61 91
62#ifndef EIO_DESTROY 92#ifndef EIO_DESTROY
… …
65 95
66#ifndef EIO_FEED 96#ifndef EIO_FEED
67# define EIO_FEED(req) do { if ((req)->feed ) (req)->feed (req); } while (0) 97# define EIO_FEED(req) do { if ((req)->feed ) (req)->feed (req); } while (0)
68#endif 98#endif
69 99
100#ifndef EIO_FD_TO_WIN32_HANDLE
101# define EIO_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
102#endif
103#ifndef EIO_WIN32_HANDLE_TO_FD
104# define EIO_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
105#endif
106
107#define EIO_ERRNO(errval,retval) ((errno = errval), retval)
108
109#define EIO_ENOSYS() EIO_ERRNO (ENOSYS, -1)
110
70#ifdef _WIN32 111#ifdef _WIN32
71 112
72 /*doh*/ 113 #undef PAGESIZE
114 #define PAGESIZE 4096 /* GetSystemInfo? */
115
116 /* TODO: look at how perl does stat (non-sloppy), unlink (ro-files), utime, link */
117
118 #ifdef EIO_STRUCT_STATI64
119 /* look at perl's non-sloppy stat */
120 #define stat(path,buf) _stati64 (path,buf)
121 #define fstat(fd,buf) _fstati64 (fd,buf)
122 #endif
123 #define lstat(path,buf) stat (path,buf)
124 #define fsync(fd) (FlushFileBuffers ((HANDLE)EIO_FD_TO_WIN32_HANDLE (fd)) ? 0 : EIO_ERRNO (EBADF, -1))
125 #define mkdir(path,mode) _mkdir (path)
126 #define link(old,neu) (CreateHardLink (neu, old, 0) ? 0 : EIO_ERRNO (ENOENT, -1))
127
128 #define chmod(path,mode) _chmod (path, mode)
129 #define dup(fd) _dup (fd)
130 #define dup2(fd1,fd2) _dup2 (fd1, fd2)
131
132 #define fchmod(fd,mode) EIO_ENOSYS ()
133 #define chown(path,uid,gid) EIO_ENOSYS ()
134 #define fchown(fd,uid,gid) EIO_ENOSYS ()
135 #define truncate(path,offs) EIO_ENOSYS () /* far-miss: SetEndOfFile */
136 #define ftruncate(fd,offs) EIO_ENOSYS () /* near-miss: SetEndOfFile */
137 #define mknod(path,mode,dev) EIO_ENOSYS ()
138 #define sync() EIO_ENOSYS ()
139 #define readlink(path,buf,s) EIO_ENOSYS ()
140 #define statvfs(path,buf) EIO_ENOSYS ()
141 #define fstatvfs(fd,buf) EIO_ENOSYS ()
142
143 /* rename() uses MoveFile, which fails to overwrite */
144 #define rename(old,neu) eio__rename (old, neu)
145
146 static int
147 eio__rename (const char *old, const char *neu)
148 {
149 if (MoveFileEx (old, neu, MOVEFILE_REPLACE_EXISTING))
150 return 0;
151
152 /* should steal _dosmaperr */
153 switch (GetLastError ())
154 {
155 case ERROR_FILE_NOT_FOUND:
156 case ERROR_PATH_NOT_FOUND:
157 case ERROR_INVALID_DRIVE:
158 case ERROR_NO_MORE_FILES:
159 case ERROR_BAD_NETPATH:
160 case ERROR_BAD_NET_NAME:
161 case ERROR_BAD_PATHNAME:
162 case ERROR_FILENAME_EXCED_RANGE:
163 errno = ENOENT;
164 break;
165
166 default:
167 errno = EACCES;
168 break;
169 }
170
171 return -1;
172 }
173
174 /* we could even stat and see if it exists */
175 static int
176 symlink (const char *old, const char *neu)
177 {
178 #if WINVER >= 0x0600
179 if (CreateSymbolicLink (neu, old, 1))
180 return 0;
181
182 if (CreateSymbolicLink (neu, old, 0))
183 return 0;
184 #endif
185
186 return EIO_ERRNO (ENOENT, -1);
187 }
188
189 /* POSIX API only */
190 #define CreateHardLink(neu,old,flags) 0
191 #define CreateSymbolicLink(neu,old,flags) 0
192
193 struct statvfs
194 {
195 int dummy;
196 };
197
198 #define DT_DIR EIO_DT_DIR
199 #define DT_REG EIO_DT_REG
200 #define D_NAME(entp) entp.cFileName
201 #define D_TYPE(entp) (entp.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY ? DT_DIR : DT_REG)
202
73#else 203#else
74 204
75# include "config.h"
76# include <sys/time.h> 205 #include <sys/time.h>
77# include <sys/select.h> 206 #include <sys/select.h>
207 #include <sys/statvfs.h>
78# include <unistd.h> 208 #include <unistd.h>
209 #include <signal.h>
210 #include <dirent.h>
211
212 #if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
213 #include <sys/mman.h>
214 #endif
215
216 #define D_NAME(entp) entp->d_name
217
218 /* POSIX_SOURCE is useless on bsd's, and XOPEN_SOURCE is unreliable there, too */
219 #if __FreeBSD__ || defined __NetBSD__ || defined __OpenBSD__
220 #define _DIRENT_HAVE_D_TYPE /* sigh */
221 #define D_INO(de) (de)->d_fileno
222 #define D_NAMLEN(de) (de)->d_namlen
223 #elif __linux || defined d_ino || _XOPEN_SOURCE >= 600
224 #define D_INO(de) (de)->d_ino
225 #endif
226
227 #ifdef _D_EXACT_NAMLEN
228 #undef D_NAMLEN
229 #define D_NAMLEN(de) _D_EXACT_NAMLEN (de)
230 #endif
231
232 #ifdef _DIRENT_HAVE_D_TYPE
233 #define D_TYPE(de) (de)->d_type
234 #endif
235
236 #ifndef EIO_STRUCT_DIRENT
237 #define EIO_STRUCT_DIRENT struct dirent
238 #endif
239
240#endif
241
242#if HAVE_UTIMES
79# include <utime.h> 243# include <utime.h>
80# include <signal.h>
81# include <dirent.h>
82
83/* POSIX_SOURCE is useless on bsd's, and XOPEN_SOURCE is unreliable there, too */
84# if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__)
85# define D_INO(de) (de)->d_fileno
86# define _DIRENT_HAVE_D_TYPE /* sigh */
87# elif defined(__linux) || defined(d_ino) || _XOPEN_SOURCE >= 600
88# define D_INO(de) (de)->d_ino
89# endif 244#endif
90 245
91# ifdef _DIRENT_HAVE_D_TYPE 246#if HAVE_SYS_SYSCALL_H
92# define D_TYPE(de) (de)->d_type 247# include <sys/syscall.h>
93# endif 248#endif
94 249
95# ifndef EIO_STRUCT_DIRENT 250#if HAVE_SYS_PRCTL_H
96# define EIO_STRUCT_DIRENT struct dirent 251# include <sys/prctl.h>
97# endif
98
99#endif 252#endif
100 253
101#if HAVE_SENDFILE 254#if HAVE_SENDFILE
102# if __linux 255# if __linux
103# include <sys/sendfile.h> 256# include <sys/sendfile.h>
104# elif __freebsd 257# elif __FreeBSD__ || defined __APPLE__
105# include <sys/socket.h> 258# include <sys/socket.h>
106# include <sys/uio.h> 259# include <sys/uio.h>
107# elif __hpux 260# elif __hpux
108# include <sys/socket.h> 261# include <sys/socket.h>
109# elif __solaris /* not yet */ 262# elif __solaris
110# include <sys/sendfile.h> 263# include <sys/sendfile.h>
111# else 264# else
112# error sendfile support requested but not available 265# error sendfile support requested but not available
113# endif 266# endif
114#endif 267#endif
115 268
116#ifndef D_TYPE 269#ifndef D_TYPE
117# define D_TYPE(de) 0 270# define D_TYPE(de) 0
118#endif 271#endif
119
120#ifndef D_INO 272#ifndef D_INO
121# define D_INO(de) 0 273# define D_INO(de) 0
122#endif 274#endif
123 275#ifndef D_NAMLEN
124/* number of seconds after which an idle threads exit */ 276# define D_NAMLEN(entp) strlen (D_NAME (entp))
125#define IDLE_TIMEOUT 10 277#endif
126 278
127/* used for struct dirent, AIX doesn't provide it */ 279/* used for struct dirent, AIX doesn't provide it */
128#ifndef NAME_MAX 280#ifndef NAME_MAX
129# define NAME_MAX 4096 281# define NAME_MAX 4096
130#endif 282#endif
131 283
284/* used for readlink etc. */
285#ifndef PATH_MAX
286# define PATH_MAX 4096
287#endif
288
132/* buffer size for various temporary buffers */ 289/* buffer size for various temporary buffers */
133#define EIO_BUFSIZE 65536 290#define EIO_BUFSIZE 65536
134 291
135#define dBUF \ 292#define dBUF \
136 char *eio_buf; \
137 ETP_WORKER_LOCK (self); \
138 self->dbuf = eio_buf = malloc (EIO_BUFSIZE); \ 293 char *eio_buf = malloc (EIO_BUFSIZE); \
139 ETP_WORKER_UNLOCK (self); \
140 errno = ENOMEM; \ 294 errno = ENOMEM; \
141 if (!eio_buf) \ 295 if (!eio_buf) \
142 return -1; 296 return -1
297
298#define FUBd \
299 free (eio_buf)
143 300
144#define EIO_TICKS ((1000000 + 1023) >> 10) 301#define EIO_TICKS ((1000000 + 1023) >> 10)
145 302
146/*****************************************************************************/ 303/*****************************************************************************/
147 304
148#if __GNUC__ >= 3 305struct tmpbuf
149# define expect(expr,value) __builtin_expect ((expr),(value)) 306{
150#else 307 void *ptr;
151# define expect(expr,value) (expr) 308 int len;
152#endif 309};
153 310
154#define expect_false(expr) expect ((expr) != 0, 0) 311static void *
155#define expect_true(expr) expect ((expr) != 0, 1) 312tmpbuf_get (struct tmpbuf *buf, int len)
313{
314 if (buf->len < len)
315 {
316 free (buf->ptr);
317 buf->ptr = malloc (buf->len = len);
318 }
319
320 return buf->ptr;
321}
156 322
157/*****************************************************************************/ 323/*****************************************************************************/
158 324
159#define ETP_PRI_MIN EIO_PRI_MIN 325#define ETP_PRI_MIN EIO_PRI_MIN
160#define ETP_PRI_MAX EIO_PRI_MAX 326#define ETP_PRI_MAX EIO_PRI_MAX
… …
166static int eio_finish (eio_req *req); 332static int eio_finish (eio_req *req);
167#define ETP_FINISH(req) eio_finish (req) 333#define ETP_FINISH(req) eio_finish (req)
168static void eio_execute (struct etp_worker *self, eio_req *req); 334static void eio_execute (struct etp_worker *self, eio_req *req);
169#define ETP_EXECUTE(wrk,req) eio_execute (wrk,req) 335#define ETP_EXECUTE(wrk,req) eio_execute (wrk,req)
170 336
171#define ETP_WORKER_CLEAR(req) \
172 if (wrk->dbuf) \
173 { \
174 free (wrk->dbuf); \
175 wrk->dbuf = 0; \
176 } \
177 \
178 if (wrk->dirp) \
179 { \
180 closedir (wrk->dirp); \
181 wrk->dirp = 0; \
182 }
183#define ETP_WORKER_COMMON \
184 void *dbuf; \
185 DIR *dirp;
186
187/*****************************************************************************/ 337/*****************************************************************************/
188 338
189#define ETP_NUM_PRI (ETP_PRI_MAX - ETP_PRI_MIN + 1) 339#define ETP_NUM_PRI (ETP_PRI_MAX - ETP_PRI_MIN + 1)
190 340
191/* calculcate time difference in ~1/EIO_TICKS of a second */ 341/* calculate time difference in ~1/EIO_TICKS of a second */
342ecb_inline int
192static int tvdiff (struct timeval *tv1, struct timeval *tv2) 343tvdiff (struct timeval *tv1, struct timeval *tv2)
193{ 344{
194 return (tv2->tv_sec - tv1->tv_sec ) * EIO_TICKS 345 return (tv2->tv_sec - tv1->tv_sec ) * EIO_TICKS
195 + ((tv2->tv_usec - tv1->tv_usec) >> 10); 346 + ((tv2->tv_usec - tv1->tv_usec) >> 10);
196} 347}
197 348
… …
201static void (*done_poll_cb) (void); 352static void (*done_poll_cb) (void);
202 353
203static unsigned int max_poll_time; /* reslock */ 354static unsigned int max_poll_time; /* reslock */
204static unsigned int max_poll_reqs; /* reslock */ 355static unsigned int max_poll_reqs; /* reslock */
205 356
206static volatile unsigned int nreqs; /* reqlock */ 357static unsigned int nreqs; /* reqlock */
207static volatile unsigned int nready; /* reqlock */ 358static unsigned int nready; /* reqlock */
208static volatile unsigned int npending; /* reqlock */ 359static unsigned int npending; /* reqlock */
209static volatile unsigned int max_idle = 4; 360static unsigned int max_idle = 4; /* maximum number of threads that can idle indefinitely */
361static unsigned int idle_timeout = 10; /* number of seconds after which an idle threads exit */
210 362
211static mutex_t wrklock = X_MUTEX_INIT; 363static xmutex_t wrklock;
212static mutex_t reslock = X_MUTEX_INIT; 364static xmutex_t reslock;
213static mutex_t reqlock = X_MUTEX_INIT; 365static xmutex_t reqlock;
214static cond_t reqwait = X_COND_INIT; 366static xcond_t reqwait;
215 367
216#if !HAVE_PREADWRITE 368#if !HAVE_PREADWRITE
217/* 369/*
218 * make our pread/pwrite emulation safe against themselves, but not against 370 * make our pread/pwrite emulation safe against themselves, but not against
219 * normal read/write by using a mutex. slows down execution a lot, 371 * normal read/write by using a mutex. slows down execution a lot,
220 * but that's your problem, not mine. 372 * but that's your problem, not mine.
221 */ 373 */
222static mutex_t preadwritelock = X_MUTEX_INIT; 374static xmutex_t preadwritelock;
223#endif 375#endif
224 376
225typedef struct etp_worker 377typedef struct etp_worker
226{ 378{
379 struct tmpbuf tmpbuf;
380
227 /* locked by wrklock */ 381 /* locked by wrklock */
228 struct etp_worker *prev, *next; 382 struct etp_worker *prev, *next;
229 383
230 thread_t tid; 384 xthread_t tid;
231 385
232 /* locked by reslock, reqlock or wrklock */ 386#ifdef ETP_WORKER_COMMON
233 ETP_REQ *req; /* currently processed request */
234
235 ETP_WORKER_COMMON 387 ETP_WORKER_COMMON
388#endif
236} etp_worker; 389} etp_worker;
237 390
238static etp_worker wrk_first = { &wrk_first, &wrk_first, 0 }; /* NOT etp */ 391static etp_worker wrk_first; /* NOT etp */
239 392
240#define ETP_WORKER_LOCK(wrk) X_LOCK (wrklock) 393#define ETP_WORKER_LOCK(wrk) X_LOCK (wrklock)
241#define ETP_WORKER_UNLOCK(wrk) X_UNLOCK (wrklock) 394#define ETP_WORKER_UNLOCK(wrk) X_UNLOCK (wrklock)
242 395
243/* worker threads management */ 396/* worker threads management */
244 397
398static void ecb_cold
245static void etp_worker_clear (etp_worker *wrk) 399etp_worker_clear (etp_worker *wrk)
246{ 400{
247 ETP_WORKER_CLEAR (wrk);
248} 401}
249 402
403static void ecb_cold
250static void etp_worker_free (etp_worker *wrk) 404etp_worker_free (etp_worker *wrk)
251{ 405{
406 free (wrk->tmpbuf.ptr);
407
252 wrk->next->prev = wrk->prev; 408 wrk->next->prev = wrk->prev;
253 wrk->prev->next = wrk->next; 409 wrk->prev->next = wrk->next;
254 410
255 free (wrk); 411 free (wrk);
256} 412}
257 413
258static unsigned int etp_nreqs (void) 414static unsigned int
415etp_nreqs (void)
259{ 416{
260 int retval; 417 int retval;
261 if (WORDACCESS_UNSAFE) X_LOCK (reqlock); 418 if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
262 retval = nreqs; 419 retval = nreqs;
263 if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); 420 if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
264 return retval; 421 return retval;
265} 422}
266 423
267static unsigned int etp_nready (void) 424static unsigned int
425etp_nready (void)
268{ 426{
269 unsigned int retval; 427 unsigned int retval;
270 428
271 if (WORDACCESS_UNSAFE) X_LOCK (reqlock); 429 if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
272 retval = nready; 430 retval = nready;
273 if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); 431 if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
274 432
275 return retval; 433 return retval;
276} 434}
277 435
278static unsigned int etp_npending (void) 436static unsigned int
437etp_npending (void)
279{ 438{
280 unsigned int retval; 439 unsigned int retval;
281 440
282 if (WORDACCESS_UNSAFE) X_LOCK (reqlock); 441 if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
283 retval = npending; 442 retval = npending;
284 if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); 443 if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
285 444
286 return retval; 445 return retval;
287} 446}
288 447
289static unsigned int etp_nthreads (void) 448static unsigned int
449etp_nthreads (void)
290{ 450{
291 unsigned int retval; 451 unsigned int retval;
292 452
293 if (WORDACCESS_UNSAFE) X_LOCK (reqlock); 453 if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
294 retval = started; 454 retval = started;
… …
308} etp_reqq; 468} etp_reqq;
309 469
310static etp_reqq req_queue; 470static etp_reqq req_queue;
311static etp_reqq res_queue; 471static etp_reqq res_queue;
312 472
473static void ecb_noinline ecb_cold
474reqq_init (etp_reqq *q)
475{
476 int pri;
477
478 for (pri = 0; pri < ETP_NUM_PRI; ++pri)
479 q->qs[pri] = q->qe[pri] = 0;
480
481 q->size = 0;
482}
483
484static int ecb_noinline
313static int reqq_push (etp_reqq *q, ETP_REQ *req) 485reqq_push (etp_reqq *q, ETP_REQ *req)
314{ 486{
315 int pri = req->pri; 487 int pri = req->pri;
316 req->next = 0; 488 req->next = 0;
317 489
318 if (q->qe[pri]) 490 if (q->qe[pri])
… …
324 q->qe[pri] = q->qs[pri] = req; 496 q->qe[pri] = q->qs[pri] = req;
325 497
326 return q->size++; 498 return q->size++;
327} 499}
328 500
501static ETP_REQ * ecb_noinline
329static ETP_REQ *reqq_shift (etp_reqq *q) 502reqq_shift (etp_reqq *q)
330{ 503{
331 int pri; 504 int pri;
332 505
333 if (!q->size) 506 if (!q->size)
334 return 0; 507 return 0;
… …
349 } 522 }
350 523
351 abort (); 524 abort ();
352} 525}
353 526
354static void etp_atfork_prepare (void) 527static int ecb_cold
528etp_init (void (*want_poll)(void), void (*done_poll)(void))
355{ 529{
356 X_LOCK (wrklock); 530 X_MUTEX_CREATE (wrklock);
357 X_LOCK (reqlock); 531 X_MUTEX_CREATE (reslock);
358 X_LOCK (reslock); 532 X_MUTEX_CREATE (reqlock);
359#if !HAVE_PREADWRITE 533 X_COND_CREATE (reqwait);
360 X_LOCK (preadwritelock);
361#endif
362}
363 534
364static void etp_atfork_parent (void) 535 reqq_init (&req_queue);
365{ 536 reqq_init (&res_queue);
366#if !HAVE_PREADWRITE
367 X_UNLOCK (preadwritelock);
368#endif
369 X_UNLOCK (reslock);
370 X_UNLOCK (reqlock);
371 X_UNLOCK (wrklock);
372}
373 537
374static void etp_atfork_child (void) 538 wrk_first.next =
375{ 539 wrk_first.prev = &wrk_first;
376 ETP_REQ *prv;
377
378 while ((prv = reqq_shift (&req_queue)))
379 ETP_DESTROY (prv);
380
381 while ((prv = reqq_shift (&res_queue)))
382 ETP_DESTROY (prv);
383
384 while (wrk_first.next != &wrk_first)
385 {
386 etp_worker *wrk = wrk_first.next;
387
388 if (wrk->req)
389 ETP_DESTROY (wrk->req);
390
391 etp_worker_clear (wrk);
392 etp_worker_free (wrk);
393 }
394 540
395 started = 0; 541 started = 0;
396 idle = 0; 542 idle = 0;
397 nreqs = 0; 543 nreqs = 0;
398 nready = 0; 544 nready = 0;
399 npending = 0; 545 npending = 0;
400 546
401 etp_atfork_parent ();
402}
403
404static void
405etp_once_init (void)
406{
407 X_THREAD_ATFORK (etp_atfork_prepare, etp_atfork_parent, etp_atfork_child);
408}
409
410static int
411etp_init (void (*want_poll)(void), void (*done_poll)(void))
412{
413 static pthread_once_t doinit = PTHREAD_ONCE_INIT;
414
415 pthread_once (&doinit, etp_once_init);
416
417 want_poll_cb = want_poll; 547 want_poll_cb = want_poll;
418 done_poll_cb = done_poll; 548 done_poll_cb = done_poll;
419 549
420 return 0; 550 return 0;
421} 551}
422 552
423X_THREAD_PROC (etp_proc); 553X_THREAD_PROC (etp_proc);
424 554
555static void ecb_cold
425static void etp_start_thread (void) 556etp_start_thread (void)
426{ 557{
427 etp_worker *wrk = calloc (1, sizeof (etp_worker)); 558 etp_worker *wrk = calloc (1, sizeof (etp_worker));
428 559
429 /*TODO*/ 560 /*TODO*/
430 assert (("unable to allocate worker thread data", wrk)); 561 assert (("unable to allocate worker thread data", wrk));
… …
443 free (wrk); 574 free (wrk);
444 575
445 X_UNLOCK (wrklock); 576 X_UNLOCK (wrklock);
446} 577}
447 578
579static void
448static void etp_maybe_start_thread (void) 580etp_maybe_start_thread (void)
449{ 581{
450 if (expect_true (etp_nthreads () >= wanted)) 582 if (ecb_expect_true (etp_nthreads () >= wanted))
451 return; 583 return;
452 584
453 /* todo: maybe use idle here, but might be less exact */ 585 /* todo: maybe use idle here, but might be less exact */
454 if (expect_true (0 <= (int)etp_nthreads () + (int)etp_npending () - (int)etp_nreqs ())) 586 if (ecb_expect_true (0 <= (int)etp_nthreads () + (int)etp_npending () - (int)etp_nreqs ()))
455 return; 587 return;
456 588
457 etp_start_thread (); 589 etp_start_thread ();
458} 590}
459 591
592static void ecb_cold
460static void etp_end_thread (void) 593etp_end_thread (void)
461{ 594{
462 eio_req *req = calloc (1, sizeof (eio_req)); 595 eio_req *req = calloc (1, sizeof (eio_req)); /* will be freed by worker */
463 596
464 req->type = -1; 597 req->type = -1;
465 req->pri = ETP_PRI_MAX - ETP_PRI_MIN; 598 req->pri = ETP_PRI_MAX - ETP_PRI_MIN;
466 599
467 X_LOCK (reqlock); 600 X_LOCK (reqlock);
… …
472 X_LOCK (wrklock); 605 X_LOCK (wrklock);
473 --started; 606 --started;
474 X_UNLOCK (wrklock); 607 X_UNLOCK (wrklock);
475} 608}
476 609
477static int etp_poll (void) 610static int
611etp_poll (void)
478{ 612{
479 unsigned int maxreqs; 613 unsigned int maxreqs;
480 unsigned int maxtime; 614 unsigned int maxtime;
481 struct timeval tv_start, tv_now; 615 struct timeval tv_start, tv_now;
482 616
… …
512 646
513 X_LOCK (reqlock); 647 X_LOCK (reqlock);
514 --nreqs; 648 --nreqs;
515 X_UNLOCK (reqlock); 649 X_UNLOCK (reqlock);
516 650
517 if (expect_false (req->type == EIO_GROUP && req->size)) 651 if (ecb_expect_false (req->type == EIO_GROUP && req->size))
518 { 652 {
519 req->int1 = 1; /* mark request as delayed */ 653 req->int1 = 1; /* mark request as delayed */
520 continue; 654 continue;
521 } 655 }
522 else 656 else
523 { 657 {
524 int res = ETP_FINISH (req); 658 int res = ETP_FINISH (req);
525 if (expect_false (res)) 659 if (ecb_expect_false (res))
526 return res; 660 return res;
527 } 661 }
528 662
529 if (expect_false (maxreqs && !--maxreqs)) 663 if (ecb_expect_false (maxreqs && !--maxreqs))
530 break; 664 break;
531 665
532 if (maxtime) 666 if (maxtime)
533 { 667 {
534 gettimeofday (&tv_now, 0); 668 gettimeofday (&tv_now, 0);
… …
540 674
541 errno = EAGAIN; 675 errno = EAGAIN;
542 return -1; 676 return -1;
543} 677}
544 678
679static void
545static void etp_cancel (ETP_REQ *req) 680etp_cancel (ETP_REQ *req)
546{ 681{
547 X_LOCK (wrklock); 682 req->cancelled = 1;
548 req->flags |= EIO_FLAG_CANCELLED;
549 X_UNLOCK (wrklock);
550 683
551 eio_grp_cancel (req); 684 eio_grp_cancel (req);
552} 685}
553 686
687static void
554static void etp_submit (ETP_REQ *req) 688etp_submit (ETP_REQ *req)
555{ 689{
556 req->pri -= ETP_PRI_MIN; 690 req->pri -= ETP_PRI_MIN;
557 691
558 if (expect_false (req->pri < ETP_PRI_MIN - ETP_PRI_MIN)) req->pri = ETP_PRI_MIN - ETP_PRI_MIN; 692 if (ecb_expect_false (req->pri < ETP_PRI_MIN - ETP_PRI_MIN)) req->pri = ETP_PRI_MIN - ETP_PRI_MIN;
559 if (expect_false (req->pri > ETP_PRI_MAX - ETP_PRI_MIN)) req->pri = ETP_PRI_MAX - ETP_PRI_MIN; 693 if (ecb_expect_false (req->pri > ETP_PRI_MAX - ETP_PRI_MIN)) req->pri = ETP_PRI_MAX - ETP_PRI_MIN;
560 694
561 if (expect_false (req->type == EIO_GROUP)) 695 if (ecb_expect_false (req->type == EIO_GROUP))
562 { 696 {
563 /* I hope this is worth it :/ */ 697 /* I hope this is worth it :/ */
564 X_LOCK (reqlock); 698 X_LOCK (reqlock);
565 ++nreqs; 699 ++nreqs;
566 X_UNLOCK (reqlock); 700 X_UNLOCK (reqlock);
… …
585 719
586 etp_maybe_start_thread (); 720 etp_maybe_start_thread ();
587 } 721 }
588} 722}
589 723
724static void ecb_cold
590static void etp_set_max_poll_time (double nseconds) 725etp_set_max_poll_time (double nseconds)
591{ 726{
592 if (WORDACCESS_UNSAFE) X_LOCK (reslock); 727 if (WORDACCESS_UNSAFE) X_LOCK (reslock);
593 max_poll_time = nseconds; 728 max_poll_time = nseconds * EIO_TICKS;
594 if (WORDACCESS_UNSAFE) X_UNLOCK (reslock); 729 if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);
595} 730}
596 731
732static void ecb_cold
597static void etp_set_max_poll_reqs (unsigned int maxreqs) 733etp_set_max_poll_reqs (unsigned int maxreqs)
598{ 734{
599 if (WORDACCESS_UNSAFE) X_LOCK (reslock); 735 if (WORDACCESS_UNSAFE) X_LOCK (reslock);
600 max_poll_reqs = maxreqs; 736 max_poll_reqs = maxreqs;
601 if (WORDACCESS_UNSAFE) X_UNLOCK (reslock); 737 if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);
602} 738}
603 739
740static void ecb_cold
604static void etp_set_max_idle (unsigned int nthreads) 741etp_set_max_idle (unsigned int nthreads)
605{ 742{
606 if (WORDACCESS_UNSAFE) X_LOCK (reqlock); 743 if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
607 max_idle = nthreads <= 0 ? 1 : nthreads; 744 max_idle = nthreads;
608 if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); 745 if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
609} 746}
610 747
748static void ecb_cold
749etp_set_idle_timeout (unsigned int seconds)
750{
751 if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
752 idle_timeout = seconds;
753 if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
754}
755
756static void ecb_cold
611static void etp_set_min_parallel (unsigned int nthreads) 757etp_set_min_parallel (unsigned int nthreads)
612{ 758{
613 if (wanted < nthreads) 759 if (wanted < nthreads)
614 wanted = nthreads; 760 wanted = nthreads;
615} 761}
616 762
763static void ecb_cold
617static void etp_set_max_parallel (unsigned int nthreads) 764etp_set_max_parallel (unsigned int nthreads)
618{ 765{
619 if (wanted > nthreads) 766 if (wanted > nthreads)
620 wanted = nthreads; 767 wanted = nthreads;
621 768
622 while (started > wanted) 769 while (started > wanted)
623 etp_end_thread (); 770 etp_end_thread ();
624} 771}
625 772
626/*****************************************************************************/ 773/*****************************************************************************/
627 774
775static void
628static void grp_try_feed (eio_req *grp) 776grp_try_feed (eio_req *grp)
629{ 777{
630 while (grp->size < grp->int2 && !EIO_CANCELLED (grp)) 778 while (grp->size < grp->int2 && !EIO_CANCELLED (grp))
631 { 779 {
632 grp->flags &= ~EIO_FLAG_GROUPADD; 780 grp->flags &= ~EIO_FLAG_GROUPADD;
633 781
… …
640 break; 788 break;
641 } 789 }
642 } 790 }
643} 791}
644 792
793static int
645static int grp_dec (eio_req *grp) 794grp_dec (eio_req *grp)
646{ 795{
647 --grp->size; 796 --grp->size;
648 797
649 /* call feeder, if applicable */ 798 /* call feeder, if applicable */
650 grp_try_feed (grp); 799 grp_try_feed (grp);
… …
654 return eio_finish (grp); 803 return eio_finish (grp);
655 else 804 else
656 return 0; 805 return 0;
657} 806}
658 807
808static void
659void eio_destroy (eio_req *req) 809eio_destroy (eio_req *req)
660{ 810{
661 if ((req)->flags & EIO_FLAG_PTR1_FREE) free (req->ptr1); 811 if ((req)->flags & EIO_FLAG_PTR1_FREE) free (req->ptr1);
662 if ((req)->flags & EIO_FLAG_PTR2_FREE) free (req->ptr2); 812 if ((req)->flags & EIO_FLAG_PTR2_FREE) free (req->ptr2);
663 813
664 EIO_DESTROY (req); 814 EIO_DESTROY (req);
665} 815}
666 816
817static int
667static int eio_finish (eio_req *req) 818eio_finish (eio_req *req)
668{ 819{
669 int res = EIO_FINISH (req); 820 int res = EIO_FINISH (req);
670 821
671 if (req->grp) 822 if (req->grp)
672 { 823 {
… …
680 if (grp->grp_first == req) 831 if (grp->grp_first == req)
681 grp->grp_first = req->grp_next; 832 grp->grp_first = req->grp_next;
682 833
683 res2 = grp_dec (grp); 834 res2 = grp_dec (grp);
684 835
685 if (!res && res2) 836 if (!res)
686 res = res2; 837 res = res2;
687 } 838 }
688 839
689 eio_destroy (req); 840 eio_destroy (req);
690 841
691 return res; 842 return res;
692} 843}
693 844
845void
694void eio_grp_cancel (eio_req *grp) 846eio_grp_cancel (eio_req *grp)
695{ 847{
696 for (grp = grp->grp_first; grp; grp = grp->grp_next) 848 for (grp = grp->grp_first; grp; grp = grp->grp_next)
697 eio_cancel (grp); 849 eio_cancel (grp);
698} 850}
699 851
852void
700void eio_cancel (eio_req *req) 853eio_cancel (eio_req *req)
701{ 854{
702 etp_cancel (req); 855 etp_cancel (req);
703} 856}
704 857
858void
705void eio_submit (eio_req *req) 859eio_submit (eio_req *req)
706{ 860{
707 etp_submit (req); 861 etp_submit (req);
708} 862}
709 863
710unsigned int eio_nreqs (void) 864unsigned int
865eio_nreqs (void)
711{ 866{
712 return etp_nreqs (); 867 return etp_nreqs ();
713} 868}
714 869
715unsigned int eio_nready (void) 870unsigned int
871eio_nready (void)
716{ 872{
717 return etp_nready (); 873 return etp_nready ();
718} 874}
719 875
720unsigned int eio_npending (void) 876unsigned int
877eio_npending (void)
721{ 878{
722 return etp_npending (); 879 return etp_npending ();
723} 880}
724 881
725unsigned int eio_nthreads (void) 882unsigned int ecb_cold
883eio_nthreads (void)
726{ 884{
727 return etp_nthreads (); 885 return etp_nthreads ();
728} 886}
729 887
888void ecb_cold
730void eio_set_max_poll_time (double nseconds) 889eio_set_max_poll_time (double nseconds)
731{ 890{
732 etp_set_max_poll_time (nseconds); 891 etp_set_max_poll_time (nseconds);
733} 892}
734 893
894void ecb_cold
735void eio_set_max_poll_reqs (unsigned int maxreqs) 895eio_set_max_poll_reqs (unsigned int maxreqs)
736{ 896{
737 etp_set_max_poll_reqs (maxreqs); 897 etp_set_max_poll_reqs (maxreqs);
738} 898}
739 899
900void ecb_cold
740void eio_set_max_idle (unsigned int nthreads) 901eio_set_max_idle (unsigned int nthreads)
741{ 902{
742 etp_set_max_idle (nthreads); 903 etp_set_max_idle (nthreads);
743} 904}
744 905
906void ecb_cold
907eio_set_idle_timeout (unsigned int seconds)
908{
909 etp_set_idle_timeout (seconds);
910}
911
912void ecb_cold
745void eio_set_min_parallel (unsigned int nthreads) 913eio_set_min_parallel (unsigned int nthreads)
746{ 914{
747 etp_set_min_parallel (nthreads); 915 etp_set_min_parallel (nthreads);
748} 916}
749 917
918void ecb_cold
750void eio_set_max_parallel (unsigned int nthreads) 919eio_set_max_parallel (unsigned int nthreads)
751{ 920{
752 etp_set_max_parallel (nthreads); 921 etp_set_max_parallel (nthreads);
753} 922}
754 923
755int eio_poll (void) 924int eio_poll (void)
… …
764# undef pread 933# undef pread
765# undef pwrite 934# undef pwrite
766# define pread eio__pread 935# define pread eio__pread
767# define pwrite eio__pwrite 936# define pwrite eio__pwrite
768 937
769static ssize_t 938static eio_ssize_t
770eio__pread (int fd, void *buf, size_t count, off_t offset) 939eio__pread (int fd, void *buf, size_t count, off_t offset)
771{ 940{
772 ssize_t res; 941 eio_ssize_t res;
773 off_t ooffset; 942 off_t ooffset;
774 943
775 X_LOCK (preadwritelock); 944 X_LOCK (preadwritelock);
776 ooffset = lseek (fd, 0, SEEK_CUR); 945 ooffset = lseek (fd, 0, SEEK_CUR);
777 lseek (fd, offset, SEEK_SET); 946 lseek (fd, offset, SEEK_SET);
… …
780 X_UNLOCK (preadwritelock); 949 X_UNLOCK (preadwritelock);
781 950
782 return res; 951 return res;
783} 952}
784 953
785static ssize_t 954static eio_ssize_t
786eio__pwrite (int fd, void *buf, size_t count, off_t offset) 955eio__pwrite (int fd, void *buf, size_t count, off_t offset)
787{ 956{
788 ssize_t res; 957 eio_ssize_t res;
789 off_t ooffset; 958 off_t ooffset;
790 959
791 X_LOCK (preadwritelock); 960 X_LOCK (preadwritelock);
792 ooffset = lseek (fd, 0, SEEK_CUR); 961 ooffset = lseek (fd, 0, SEEK_CUR);
793 lseek (fd, offset, SEEK_SET); 962 lseek (fd, offset, SEEK_SET);
… …
797 966
798 return res; 967 return res;
799} 968}
800#endif 969#endif
801 970
802#ifndef HAVE_FUTIMES 971#ifndef HAVE_UTIMES
803 972
804# undef utimes 973# undef utimes
805# undef futimes
806# define utimes(path,times) eio__utimes (path, times) 974# define utimes(path,times) eio__utimes (path, times)
807# define futimes(fd,times) eio__futimes (fd, times)
808 975
809static int 976static int
810eio__utimes (const char *filename, const struct timeval times[2]) 977eio__utimes (const char *filename, const struct timeval times[2])
811{ 978{
812 if (times) 979 if (times)
… …
820 } 987 }
821 else 988 else
822 return utime (filename, 0); 989 return utime (filename, 0);
823} 990}
824 991
992#endif
993
994#ifndef HAVE_FUTIMES
995
996# undef futimes
997# define futimes(fd,times) eio__futimes (fd, times)
998
999static int
825static int eio__futimes (int fd, const struct timeval tv[2]) 1000eio__futimes (int fd, const struct timeval tv[2])
826{ 1001{
827 errno = ENOSYS; 1002 errno = ENOSYS;
828 return -1; 1003 return -1;
829} 1004}
830 1005
… …
833#if !HAVE_FDATASYNC 1008#if !HAVE_FDATASYNC
834# undef fdatasync 1009# undef fdatasync
835# define fdatasync(fd) fsync (fd) 1010# define fdatasync(fd) fsync (fd)
836#endif 1011#endif
837 1012
1013static int
1014eio__syncfs (int fd)
1015{
1016 int res;
1017
1018#if HAVE_SYS_SYNCFS
1019 res = (int)syscall (__NR_syncfs, (int)(fd));
1020#else
1021 res = -1;
1022 errno = ENOSYS;
1023#endif
1024
1025 if (res < 0 && errno == ENOSYS && fd >= 0)
1026 sync ();
1027
1028 return res;
1029}
1030
838/* sync_file_range always needs emulation */ 1031/* sync_file_range always needs emulation */
839int 1032static int
840eio__sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags) 1033eio__sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags)
841{ 1034{
842#if HAVE_SYNC_FILE_RANGE 1035#if HAVE_SYNC_FILE_RANGE
843 int res; 1036 int res;
844 1037
… …
857 if (!res || errno != ENOSYS) 1050 if (!res || errno != ENOSYS)
858 return res; 1051 return res;
859#endif 1052#endif
860 1053
861 /* even though we could play tricks with the flags, it's better to always 1054 /* even though we could play tricks with the flags, it's better to always
862 * call fdatasync, as thta matches the expectation of it's users best */ 1055 * call fdatasync, as that matches the expectation of its users best */
863 return fdatasync (fd); 1056 return fdatasync (fd);
1057}
1058
1059static int
1060eio__fallocate (int fd, int mode, off_t offset, size_t len)
1061{
1062#if HAVE_FALLOCATE
1063 return fallocate (fd, mode, offset, len);
1064#else
1065 errno = ENOSYS;
1066 return -1;
1067#endif
864} 1068}
865 1069
866#if !HAVE_READAHEAD 1070#if !HAVE_READAHEAD
867# undef readahead 1071# undef readahead
868# define readahead(fd,offset,count) eio__readahead (fd, offset, count, self) 1072# define readahead(fd,offset,count) eio__readahead (fd, offset, count, self)
869 1073
870static ssize_t 1074static eio_ssize_t
871eio__readahead (int fd, off_t offset, size_t count, etp_worker *self) 1075eio__readahead (int fd, off_t offset, size_t count, etp_worker *self)
872{ 1076{
873 size_t todo = count; 1077 size_t todo = count;
874 dBUF; 1078 dBUF;
875 1079
… …
880 pread (fd, eio_buf, len, offset); 1084 pread (fd, eio_buf, len, offset);
881 offset += len; 1085 offset += len;
882 todo -= len; 1086 todo -= len;
883 } 1087 }
884 1088
1089 FUBd;
1090
885 errno = 0; 1091 errno = 0;
886 return count; 1092 return count;
887} 1093}
888 1094
889#endif 1095#endif
890 1096
891/* sendfile always needs emulation */ 1097/* sendfile always needs emulation */
892static ssize_t 1098static eio_ssize_t
893eio__sendfile (int ofd, int ifd, off_t offset, size_t count, etp_worker *self) 1099eio__sendfile (int ofd, int ifd, off_t offset, size_t count)
894{ 1100{
1101 eio_ssize_t written = 0;
895 ssize_t res; 1102 eio_ssize_t res;
896 1103
897 if (!count) 1104 if (!count)
898 return 0; 1105 return 0;
899 1106
1107 for (;;)
1108 {
1109#ifdef __APPLE__
1110# undef HAVE_SENDFILE /* broken, as everything on os x */
1111#endif
900#if HAVE_SENDFILE 1112#if HAVE_SENDFILE
901# if __linux 1113# if __linux
1114 off_t soffset = offset;
902 res = sendfile (ofd, ifd, &offset, count); 1115 res = sendfile (ofd, ifd, &soffset, count);
903 1116
904# elif __freebsd 1117# elif __FreeBSD__
905 /* 1118 /*
906 * Of course, the freebsd sendfile is a dire hack with no thoughts 1119 * Of course, the freebsd sendfile is a dire hack with no thoughts
907 * wasted on making it similar to other I/O functions. 1120 * wasted on making it similar to other I/O functions.
908 */ 1121 */
909 {
910 off_t sbytes; 1122 off_t sbytes;
911 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0); 1123 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
912 1124
913 if (res < 0 && sbytes) 1125 #if 0 /* according to the manpage, this is correct, but broken behaviour */
914 /* maybe only on EAGAIN: as usual, the manpage leaves you guessing */ 1126 /* freebsd' sendfile will return 0 on success */
1127 /* freebsd 8 documents it as only setting *sbytes on EINTR and EAGAIN, but */
1128 /* not on e.g. EIO or EPIPE - sounds broken */
1129 if ((res < 0 && (errno == EAGAIN || errno == EINTR) && sbytes) || res == 0)
915 res = sbytes; 1130 res = sbytes;
916 } 1131 #endif
1132
1133 /* according to source inspection, this is correct, and useful behaviour */
1134 if (sbytes)
1135 res = sbytes;
1136
1137# elif defined (__APPLE__)
1138 off_t sbytes = count;
1139 res = sendfile (ifd, ofd, offset, &sbytes, 0, 0);
1140
1141 /* according to the manpage, sbytes is always valid */
1142 if (sbytes)
1143 res = sbytes;
917 1144
918# elif __hpux 1145# elif __hpux
919 res = sendfile (ofd, ifd, offset, count, 0, 0); 1146 res = sendfile (ofd, ifd, offset, count, 0, 0);
920 1147
921# elif __solaris 1148# elif __solaris
922 {
923 struct sendfilevec vec; 1149 struct sendfilevec vec;
924 size_t sbytes; 1150 size_t sbytes;
925 1151
926 vec.sfv_fd = ifd; 1152 vec.sfv_fd = ifd;
927 vec.sfv_flag = 0; 1153 vec.sfv_flag = 0;
928 vec.sfv_off = offset; 1154 vec.sfv_off = offset;
929 vec.sfv_len = count; 1155 vec.sfv_len = count;
930 1156
931 res = sendfilev (ofd, &vec, 1, &sbytes); 1157 res = sendfilev (ofd, &vec, 1, &sbytes);
932 1158
933 if (res < 0 && sbytes) 1159 if (res < 0 && sbytes)
934 res = sbytes; 1160 res = sbytes;
935 }
936 1161
937# endif 1162# endif
1163
1164#elif defined (_WIN32) && 0
1165 /* does not work, just for documentation of what would need to be done */
1166 /* actually, cannot be done like this, as TransmitFile changes the file offset, */
1167 /* libeio guarantees that the file offset does not change, and windows */
1168 /* has no way to get an independent handle to the same file description */
1169 HANDLE h = TO_SOCKET (ifd);
1170 SetFilePointer (h, offset, 0, FILE_BEGIN);
1171 res = TransmitFile (TO_SOCKET (ofd), h, count, 0, 0, 0, 0);
1172
938#else 1173#else
939 res = -1; 1174 res = -1;
940 errno = ENOSYS; 1175 errno = ENOSYS;
941#endif 1176#endif
942 1177
1178 /* we assume sendfile can copy at least 128mb in one go */
1179 if (res <= 128 * 1024 * 1024)
1180 {
1181 if (res > 0)
1182 written += res;
1183
1184 if (written)
1185 return written;
1186
1187 break;
1188 }
1189 else
1190 {
1191 /* if we requested more, then probably the kernel was lazy */
1192 written += res;
1193 offset += res;
1194 count -= res;
1195
1196 if (!count)
1197 return written;
1198 }
1199 }
1200
943 if (res < 0 1201 if (res < 0
944 && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK 1202 && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
1203 /* BSDs */
1204#ifdef ENOTSUP /* sigh, if the steenking pile called openbsd would only try to at least compile posix code... */
1205 || errno == ENOTSUP
1206#endif
1207#ifdef EOPNOTSUPP /* windows */
1208 || errno == EOPNOTSUPP /* BSDs */
1209#endif
945#if __solaris 1210#if __solaris
946 || errno == EAFNOSUPPORT || errno == EPROTOTYPE 1211 || errno == EAFNOSUPPORT || errno == EPROTOTYPE
947#endif 1212#endif
948 ) 1213 )
949 ) 1214 )
… …
953 1218
954 res = 0; 1219 res = 0;
955 1220
956 while (count) 1221 while (count)
957 { 1222 {
958 ssize_t cnt; 1223 eio_ssize_t cnt;
959 1224
960 cnt = pread (ifd, eio_buf, count > EIO_BUFSIZE ? EIO_BUFSIZE : count, offset); 1225 cnt = pread (ifd, eio_buf, count > EIO_BUFSIZE ? EIO_BUFSIZE : count, offset);
961 1226
962 if (cnt <= 0) 1227 if (cnt <= 0)
963 { 1228 {
… …
975 1240
976 offset += cnt; 1241 offset += cnt;
977 res += cnt; 1242 res += cnt;
978 count -= cnt; 1243 count -= cnt;
979 } 1244 }
1245
1246 FUBd;
980 } 1247 }
981 1248
982 return res; 1249 return res;
983} 1250}
984 1251
1252#ifdef PAGESIZE
1253# define eio_pagesize() PAGESIZE
1254#else
1255static intptr_t
1256eio_pagesize (void)
1257{
1258 static intptr_t page;
1259
1260 if (!page)
1261 page = sysconf (_SC_PAGESIZE);
1262
1263 return page;
1264}
1265#endif
1266
1267static void
1268eio_page_align (void **addr, size_t *length)
1269{
1270 intptr_t mask = eio_pagesize () - 1;
1271
1272 /* round down addr */
1273 intptr_t adj = mask & (intptr_t)*addr;
1274
1275 *addr = (void *)((intptr_t)*addr - adj);
1276 *length += adj;
1277
1278 /* round up length */
1279 *length = (*length + mask) & ~mask;
1280}
1281
1282#if !_POSIX_MEMLOCK
1283# define eio__mlockall(a) EIO_ENOSYS ()
1284#else
1285
985static int 1286static int
1287eio__mlockall (int flags)
1288{
1289 #if __GLIBC__ == 2 && __GLIBC_MINOR__ <= 7
1290 extern int mallopt (int, int);
1291 mallopt (-6, 238); /* http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=473812 */
1292 #endif
1293
1294 if (EIO_MCL_CURRENT != MCL_CURRENT
1295 || EIO_MCL_FUTURE != MCL_FUTURE)
1296 {
1297 flags = 0
1298 | (flags & EIO_MCL_CURRENT ? MCL_CURRENT : 0)
1299 | (flags & EIO_MCL_FUTURE ? MCL_FUTURE : 0);
1300 }
1301
1302 return mlockall (flags);
1303}
1304#endif
1305
1306#if !_POSIX_MEMLOCK_RANGE
1307# define eio__mlock(a,b) EIO_ENOSYS ()
1308#else
1309
1310static int
1311eio__mlock (void *addr, size_t length)
1312{
1313 eio_page_align (&addr, &length);
1314
1315 return mlock (addr, length);
1316}
1317
1318#endif
1319
1320#if !(_POSIX_MAPPED_FILES && _POSIX_SYNCHRONIZED_IO)
1321# define eio__msync(a,b,c) EIO_ENOSYS ()
1322#else
1323
1324static int
1325eio__msync (void *mem, size_t len, int flags)
1326{
1327 eio_page_align (&mem, &len);
1328
1329 if (EIO_MS_ASYNC != MS_SYNC
1330 || EIO_MS_INVALIDATE != MS_INVALIDATE
1331 || EIO_MS_SYNC != MS_SYNC)
1332 {
1333 flags = 0
1334 | (flags & EIO_MS_ASYNC ? MS_ASYNC : 0)
1335 | (flags & EIO_MS_INVALIDATE ? MS_INVALIDATE : 0)
1336 | (flags & EIO_MS_SYNC ? MS_SYNC : 0);
1337 }
1338
1339 return msync (mem, len, flags);
1340}
1341
1342#endif
1343
1344static int
1345eio__mtouch (eio_req *req)
1346{
1347 void *mem = req->ptr2;
1348 size_t len = req->size;
1349 int flags = req->int1;
1350
1351 eio_page_align (&mem, &len);
1352
1353 {
1354 intptr_t addr = (intptr_t)mem;
1355 intptr_t end = addr + len;
1356 intptr_t page = eio_pagesize ();
1357
1358 if (addr < end)
1359 if (flags & EIO_MT_MODIFY) /* modify */
1360 do { *((volatile sig_atomic_t *)addr) |= 0; } while ((addr += page) < len && !EIO_CANCELLED (req));
1361 else
1362 do { *((volatile sig_atomic_t *)addr) ; } while ((addr += page) < len && !EIO_CANCELLED (req));
1363 }
1364
1365 return 0;
1366}
1367
1368/*****************************************************************************/
1369/* requests implemented outside eio_execute, because they are so large */
1370
1371/* copies some absolute path to tmpbuf */
1372static char *
1373eio__getwd (struct tmpbuf *tmpbuf, eio_wd wd)
1374{
1375 if (wd == EIO_CWD)
1376 return getcwd (tmpbuf->ptr, PATH_MAX);
1377
1378#if HAVE_AT
1379 abort (); /*TODO*/
1380#else
1381 strcpy (tmpbuf->ptr, wd);
1382#endif
1383 return tmpbuf->ptr;
1384}
1385
1386/* result will always end up in tmpbuf, there is always space for adding a 0-byte */
1387static int
1388eio__realpath (struct tmpbuf *tmpbuf, eio_wd wd, const char *path)
1389{
1390 const char *rel = path;
1391 char *res;
1392 char *tmp1, *tmp2;
1393#if SYMLOOP_MAX > 32
1394 int symlinks = SYMLOOP_MAX;
1395#else
1396 int symlinks = 32;
1397#endif
1398
1399 /*D*/ /*TODO: wd ignored */
1400
1401 errno = EINVAL;
1402 if (!rel)
1403 return -1;
1404
1405 errno = ENOENT;
1406 if (!*rel)
1407 return -1;
1408
1409 res = tmpbuf_get (tmpbuf, PATH_MAX * 3);
1410 tmp1 = res + PATH_MAX;
1411 tmp2 = tmp1 + PATH_MAX;
1412
1413#if 0 /* disabled, the musl way to do things is just too racy */
1414#if __linux && defined(O_NONBLOCK) && defined(O_NOATIME)
1415 /* on linux we may be able to ask the kernel */
1416 {
1417 int fd = open (rel, O_RDONLY | O_NONBLOCK | O_NOCTTY | O_NOATIME);
1418
1419 if (fd >= 0)
1420 {
1421 sprintf (tmp1, "/proc/self/fd/%d", fd);
1422 req->result = readlink (tmp1, res, PATH_MAX);
1423 close (fd);
1424
1425 /* here we should probably stat the open file and the disk file, to make sure they still match */
1426
1427 if (req->result > 0)
1428 goto done;
1429 }
1430 else if (errno == ELOOP || errno == ENAMETOOLONG || errno == ENOENT || errno == ENOTDIR || errno == EIO)
1431 return;
1432 }
1433#endif
1434#endif
1435
1436 if (*rel != '/')
1437 {
1438 if (!eio__getwd (tmpbuf, wd))
1439 return -1;
1440
1441 if (res [1]) /* only use if not / */
1442 res += strlen (res);
1443 }
1444
1445 while (*rel)
1446 {
1447 eio_ssize_t len, linklen;
1448 const char *beg = rel;
1449
1450 while (*rel && *rel != '/')
1451 ++rel;
1452
1453 len = rel - beg;
1454
1455 if (!len) /* skip slashes */
1456 {
1457 ++rel;
1458 continue;
1459 }
1460
1461 if (beg [0] == '.')
1462 {
1463 if (len == 1)
1464 continue; /* . - nop */
1465
1466 if (beg [1] == '.' && len == 2)
1467 {
1468 /* .. - back up one component, if possible */
1469
1470 while (res != tmpbuf->ptr)
1471 if (*--res == '/')
1472 break;
1473
1474 continue;
1475 }
1476 }
1477
1478 errno = ENAMETOOLONG;
1479 if (res + 1 + len + 1 >= tmp1)
1480 return;
1481
1482 /* copy one component */
1483 *res = '/';
1484 memcpy (res + 1, beg, len);
1485
1486 /* zero-terminate, for readlink */
1487 res [len + 1] = 0;
1488
1489 /* now check if it's a symlink */
1490 linklen = readlink (tmpbuf->ptr, tmp1, PATH_MAX);
1491
1492 if (linklen < 0)
1493 {
1494 if (errno != EINVAL)
1495 return -1;
1496
1497 /* it's a normal directory. hopefully */
1498 res += len + 1;
1499 }
1500 else
1501 {
1502 /* yay, it was a symlink - build new path in tmp2 */
1503 int rellen = strlen (rel);
1504
1505 errno = ENAMETOOLONG;
1506 if (linklen + 1 + rellen >= PATH_MAX)
1507 return -1;
1508
1509 errno = ELOOP;
1510 if (!--symlinks)
1511 return -1;
1512
1513 if (*tmp1 == '/')
1514 res = tmpbuf->ptr; /* symlink resolves to an absolute path */
1515
1516 /* we need to be careful, as rel might point into tmp2 already */
1517 memmove (tmp2 + linklen + 1, rel, rellen + 1);
1518 tmp2 [linklen] = '/';
1519 memcpy (tmp2, tmp1, linklen);
1520
1521 rel = tmp2;
1522 }
1523 }
1524
1525 /* special case for the lone root path */
1526 if (res == tmpbuf->ptr)
1527 *res++ = '/';
1528
1529 return res - (char *)tmpbuf->ptr;
1530}
1531
1532static signed char
986eio_dent_cmp (const void *a_, const void *b_) 1533eio_dent_cmp (const eio_dirent *a, const eio_dirent *b)
987{ 1534{
988 const eio_dirent *a = (const eio_dirent *)a_; 1535 return a->score - b->score ? a->score - b->score /* works because our signed char is always 0..100 */
989 const eio_dirent *b = (const eio_dirent *)b_; 1536 : a->inode < b->inode ? -1
1537 : a->inode > b->inode ? 1
1538 : 0;
1539}
990 1540
991 return (int)b->score - (int)a->score ? (int)b->score - (int)a->score 1541#define EIO_DENT_CMP(i,op,j) eio_dent_cmp (&i, &j) op 0
992 : a->inode < b->inode ? -1 : a->inode > b->inode ? 1 : 0; /* int might be < ino_t */ 1542
1543#define EIO_SORT_CUTOFF 30 /* quite high, but performs well on many filesystems */
1544#define EIO_SORT_FAST 60 /* when to only use insertion sort */
1545
1546static void
1547eio_dent_radix_sort (eio_dirent *dents, int size, signed char score_bits, eio_ino_t inode_bits)
1548{
1549 unsigned char bits [9 + sizeof (eio_ino_t) * 8];
1550 unsigned char *bit = bits;
1551
1552 assert (CHAR_BIT == 8);
1553 assert (sizeof (eio_dirent) * 8 < 256);
1554 assert (offsetof (eio_dirent, inode)); /* we use bit #0 as sentinel */
1555 assert (offsetof (eio_dirent, score)); /* we use bit #0 as sentinel */
1556
1557 if (size <= EIO_SORT_FAST)
1558 return;
1559
1560 /* first prepare an array of bits to test in our radix sort */
1561 /* try to take endianness into account, as well as differences in eio_ino_t sizes */
1562 /* inode_bits must contain all inodes ORed together */
1563 /* which is used to skip bits that are 0 everywhere, which is very common */
1564 {
1565 eio_ino_t endianness;
1566 int i, j;
1567
1568 /* we store the byte offset of byte n into byte n of "endianness" */
1569 for (i = 0; i < sizeof (eio_ino_t); ++i)
1570 ((unsigned char *)&endianness)[i] = i;
1571
1572 *bit++ = 0;
1573
1574 for (i = 0; i < sizeof (eio_ino_t); ++i)
1575 {
1576 /* shifting off the byte offsets out of "endianness" */
1577 int offs = (offsetof (eio_dirent, inode) + (endianness & 0xff)) * 8;
1578 endianness >>= 8;
1579
1580 for (j = 0; j < 8; ++j)
1581 if (inode_bits & (((eio_ino_t)1) << (i * 8 + j)))
1582 *bit++ = offs + j;
1583 }
1584
1585 for (j = 0; j < 8; ++j)
1586 if (score_bits & (1 << j))
1587 *bit++ = offsetof (eio_dirent, score) * 8 + j;
1588 }
1589
1590 /* now actually do the sorting (a variant of MSD radix sort) */
1591 {
1592 eio_dirent *base_stk [9 + sizeof (eio_ino_t) * 8], *base;
1593 eio_dirent *end_stk [9 + sizeof (eio_ino_t) * 8], *end;
1594 unsigned char *bit_stk [9 + sizeof (eio_ino_t) * 8];
1595 int stk_idx = 0;
1596
1597 base_stk [stk_idx] = dents;
1598 end_stk [stk_idx] = dents + size;
1599 bit_stk [stk_idx] = bit - 1;
1600
1601 do
1602 {
1603 base = base_stk [stk_idx];
1604 end = end_stk [stk_idx];
1605 bit = bit_stk [stk_idx];
1606
1607 for (;;)
1608 {
1609 unsigned char O = *bit >> 3;
1610 unsigned char M = 1 << (*bit & 7);
1611
1612 eio_dirent *a = base;
1613 eio_dirent *b = end;
1614
1615 if (b - a < EIO_SORT_CUTOFF)
1616 break;
1617
1618 /* now bit-partition the array on the bit */
1619 /* this ugly asymmetric loop seems to perform much better than typical */
1620 /* partition algos found in the literature */
1621 do
1622 if (!(((unsigned char *)a)[O] & M))
1623 ++a;
1624 else if (!(((unsigned char *)--b)[O] & M))
1625 {
1626 eio_dirent tmp = *a; *a = *b; *b = tmp;
1627 ++a;
1628 }
1629 while (b > a);
1630
1631 /* next bit, or stop, if no bits left in this path */
1632 if (!*--bit)
1633 break;
1634
1635 base_stk [stk_idx] = a;
1636 end_stk [stk_idx] = end;
1637 bit_stk [stk_idx] = bit;
1638 ++stk_idx;
1639
1640 end = a;
1641 }
1642 }
1643 while (stk_idx--);
1644 }
1645}
1646
1647static void
1648eio_dent_insertion_sort (eio_dirent *dents, int size)
1649{
1650 /* first move the smallest element to the front, to act as a sentinel */
1651 {
1652 int i;
1653 eio_dirent *min = dents;
1654
1655 /* the radix pre-pass ensures that the minimum element is in the first EIO_SORT_CUTOFF + 1 elements */
1656 for (i = size > EIO_SORT_FAST ? EIO_SORT_CUTOFF + 1 : size; --i; )
1657 if (EIO_DENT_CMP (dents [i], <, *min))
1658 min = &dents [i];
1659
1660 /* swap elements 0 and j (minimum) */
1661 {
1662 eio_dirent tmp = *dents; *dents = *min; *min = tmp;
1663 }
1664 }
1665
1666 /* then do standard insertion sort, assuming that all elements are >= dents [0] */
1667 {
1668 eio_dirent *i, *j;
1669
1670 for (i = dents + 1; i < dents + size; ++i)
1671 {
1672 eio_dirent value = *i;
1673
1674 for (j = i - 1; EIO_DENT_CMP (*j, >, value); --j)
1675 j [1] = j [0];
1676
1677 j [1] = value;
1678 }
1679 }
1680}
1681
1682static void
1683eio_dent_sort (eio_dirent *dents, int size, signed char score_bits, eio_ino_t inode_bits)
1684{
1685 if (size <= 1)
1686 return; /* our insertion sort relies on size > 0 */
1687
1688 /* first we use a radix sort, but only for dirs >= EIO_SORT_FAST */
1689 /* and stop sorting when the partitions are <= EIO_SORT_CUTOFF */
1690 eio_dent_radix_sort (dents, size, score_bits, inode_bits);
1691
1692 /* use an insertion sort at the end, or for small arrays, */
1693 /* as insertion sort is more efficient for small partitions */
1694 eio_dent_insertion_sort (dents, size);
993} 1695}
994 1696
995/* read a full directory */ 1697/* read a full directory */
996static void 1698static void
997eio__scandir (eio_req *req, etp_worker *self) 1699eio__scandir (eio_req *req)
998{ 1700{
999 DIR *dirp;
1000 EIO_STRUCT_DIRENT *entp;
1001 unsigned char *name, *names; 1701 char *name, *names;
1002 int namesalloc = 4096; 1702 int namesalloc = 4096 - sizeof (void *) * 4;
1003 int namesoffs = 0; 1703 int namesoffs = 0;
1004 int flags = req->int1; 1704 int flags = req->int1;
1005 eio_dirent *dents = 0; 1705 eio_dirent *dents = 0;
1006 int dentalloc = 128; 1706 int dentalloc = 128;
1007 int dentoffs = 0; 1707 int dentoffs = 0;
1708 eio_ino_t inode_bits = 0;
1709#ifdef _WIN32
1710 HANDLE dirp;
1711 WIN32_FIND_DATA entp;
1712#else
1713 DIR *dirp;
1714 EIO_STRUCT_DIRENT *entp;
1715#endif
1008 1716
1009 req->result = -1; 1717 req->result = -1;
1010 1718
1011 if (!(flags & EIO_READDIR_DENTS)) 1719 if (!(flags & EIO_READDIR_DENTS))
1012 flags &= ~(EIO_READDIR_DIRS_FIRST | EIO_READDIR_STAT_ORDER); 1720 flags &= ~(EIO_READDIR_DIRS_FIRST | EIO_READDIR_STAT_ORDER);
1013 1721
1014 X_LOCK (wrklock); 1722#ifdef _WIN32
1723 {
1724 int len = strlen ((const char *)req->ptr1);
1725 char *path = malloc (MAX_PATH);
1726 const char *fmt;
1015 1727
1016 /* the corresponding closedir is in ETP_WORKER_CLEAR */ 1728 if (!len)
1729 fmt = "./*";
1730 else if (((const char *)req->ptr1)[len - 1] == '/' || ((const char *)req->ptr1)[len - 1] == '\\')
1731 fmt = "%s*";
1732 else
1733 fmt = "%s/*";
1734
1735 _snprintf (path, MAX_PATH, fmt, (const char *)req->ptr1);
1736 dirp = FindFirstFile (path, &entp);
1737 free (path);
1738
1739 if (dirp == INVALID_HANDLE_VALUE)
1740 {
1741 /* should steal _dosmaperr */
1742 switch (GetLastError ())
1743 {
1744 case ERROR_FILE_NOT_FOUND:
1745 req->result = 0;
1746 break;
1747
1748 case ERROR_INVALID_NAME:
1749 case ERROR_PATH_NOT_FOUND:
1750 case ERROR_NO_MORE_FILES:
1751 errno = ENOENT;
1752 break;
1753
1754 case ERROR_NOT_ENOUGH_MEMORY:
1755 errno = ENOMEM;
1756 break;
1757
1758 default:
1759 errno = EINVAL;
1760 break;
1761 }
1762
1763 return;
1764 }
1765 }
1766#else
1017 self->dirp = dirp = opendir (req->ptr1); 1767 dirp = opendir (req->ptr1);
1768
1769 if (!dirp)
1770 return;
1771#endif
1772
1773 if (req->flags & EIO_FLAG_PTR1_FREE)
1774 free (req->ptr1);
1775
1018 req->flags |= EIO_FLAG_PTR1_FREE | EIO_FLAG_PTR2_FREE; 1776 req->flags |= EIO_FLAG_PTR1_FREE | EIO_FLAG_PTR2_FREE;
1019 req->ptr1 = names = malloc (namesalloc);
1020 req->ptr2 = dents = flags ? malloc (dentalloc * sizeof (eio_dirent)) : 0; 1777 req->ptr1 = dents = flags ? malloc (dentalloc * sizeof (eio_dirent)) : 0;
1778 req->ptr2 = names = malloc (namesalloc);
1021 1779
1022 X_UNLOCK (wrklock); 1780 if (!names || (flags && !dents))
1781 return;
1023 1782
1024 if (dirp && names && (!flags || dents))
1025 for (;;) 1783 for (;;)
1026 { 1784 {
1785 int done;
1786
1787#ifdef _WIN32
1788 done = !dirp;
1789#else
1027 errno = 0; 1790 errno = 0;
1028 entp = readdir (dirp); 1791 entp = readdir (dirp);
1792 done = !entp;
1793#endif
1029 1794
1030 if (!entp) 1795 if (done)
1031 { 1796 {
1797#ifndef _WIN32
1798 int old_errno = errno;
1799 closedir (dirp);
1800 errno = old_errno;
1801
1032 if (errno) 1802 if (errno)
1033 break; 1803 break;
1804#endif
1034 1805
1035 /* sort etc. */ 1806 /* sort etc. */
1036 req->int1 = flags; 1807 req->int1 = flags;
1037 req->result = dentoffs; 1808 req->result = dentoffs;
1038 1809
1039 if (flags & EIO_READDIR_STAT_ORDER || !(~flags & (EIO_READDIR_DIRS_FIRST | EIO_READDIR_FOUND_UNKNOWN)) 1810 if (flags & EIO_READDIR_STAT_ORDER)
1811 eio_dent_sort (dents, dentoffs, flags & EIO_READDIR_DIRS_FIRST ? 7 : 0, inode_bits);
1812 else if (flags & EIO_READDIR_DIRS_FIRST)
1813 if (flags & EIO_READDIR_FOUND_UNKNOWN)
1814 eio_dent_sort (dents, dentoffs, 7, inode_bits); /* sort by score and inode */
1040 { 1815 else
1041 /* pray your qsort doesn't use quicksort */
1042 qsort (dents, dentoffs, sizeof (*dents), eio_dent_cmp); /* score depends of DIRS_FIRST */
1043 }
1044 else if (flags & EIO_READDIR_DIRS_FIRST && !(flags & EIO_READDIR_FOUND_UNKNOWN))
1045 { 1816 {
1046 /* in this case, all is known, and we just put dirs first and sort them */ 1817 /* in this case, all is known, and we just put dirs first and sort them */
1047 eio_dirent *ent = dents + dentoffs; 1818 eio_dirent *oth = dents + dentoffs;
1048 eio_dirent *dir = dents; 1819 eio_dirent *dir = dents;
1049 1820
1821 /* now partition dirs to the front, and non-dirs to the back */
1822 /* by walking from both sides and swapping if necessary */
1050 while (ent > dir) 1823 while (oth > dir)
1051 { 1824 {
1052 if (dir->type == DT_DIR) 1825 if (dir->type == EIO_DT_DIR)
1053 ++dir; 1826 ++dir;
1054 else 1827 else if ((--oth)->type == EIO_DT_DIR)
1055 { 1828 {
1056 --ent;
1057
1058 if (ent->type == DT_DIR)
1059 {
1060 eio_dirent tmp = *dir; 1829 eio_dirent tmp = *dir; *dir = *oth; *oth = tmp;
1061 *dir = *ent;
1062 *ent = tmp;
1063 1830
1064 ++dir; 1831 ++dir;
1065 }
1066 } 1832 }
1067 } 1833 }
1068 1834
1069 /* now sort the dirs only */ 1835 /* now sort the dirs only (dirs all have the same score) */
1070 qsort (dents, dir - dents, sizeof (*dents), eio_dent_cmp); 1836 eio_dent_sort (dents, dir - dents, 0, inode_bits);
1071 } 1837 }
1072 1838
1073 {int i; for(i=0;i<dentoffs;++i){eio_dirent *e=dents+i; printf ("%9ld %3d %s\n", e->inode,e->score,e->name);}}//D
1074
1075 break; 1839 break;
1076 } 1840 }
1077 1841
1078 name = entp->d_name; 1842 /* now add the entry to our list(s) */
1843 name = D_NAME (entp);
1079 1844
1845 /* skip . and .. entries */
1080 if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2]))) 1846 if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1081 { 1847 {
1082 int len = strlen (name) + 1; 1848 int len = D_NAMLEN (entp) + 1;
1083 1849
1084 while (expect_false (namesoffs + len > namesalloc)) 1850 while (ecb_expect_false (namesoffs + len > namesalloc))
1085 { 1851 {
1086 namesalloc *= 2; 1852 namesalloc *= 2;
1087 X_LOCK (wrklock);
1088 req->ptr1 = names = realloc (names, namesalloc); 1853 req->ptr2 = names = realloc (names, namesalloc);
1089 X_UNLOCK (wrklock);
1090 1854
1091 if (!names) 1855 if (!names)
1092 break; 1856 break;
1093 } 1857 }
1094 1858
1095 memcpy (names + namesoffs, name, len); 1859 memcpy (names + namesoffs, name, len);
1096 1860
1097 if (dents) 1861 if (dents)
1098 { 1862 {
1099 struct eio_dirent *ent; 1863 struct eio_dirent *ent;
1100 1864
1101 if (expect_false (dentoffs == dentalloc)) 1865 if (ecb_expect_false (dentoffs == dentalloc))
1102 { 1866 {
1103 dentalloc *= 2; 1867 dentalloc *= 2;
1104 X_LOCK (wrklock);
1105 req->ptr2 = dents = realloc (dents, dentalloc * sizeof (eio_dirent)); 1868 req->ptr1 = dents = realloc (dents, dentalloc * sizeof (eio_dirent));
1106 X_UNLOCK (wrklock);
1107 1869
1108 if (!dents) 1870 if (!dents)
1109 break; 1871 break;
1110 } 1872 }
1111 1873
1112 ent = dents + dentoffs; 1874 ent = dents + dentoffs;
1113 1875
1114 ent->name = names + namesoffs; 1876 ent->nameofs = namesoffs; /* rather dirtily we store the offset in the pointer */
1115 ent->namelen = len - 1; 1877 ent->namelen = len - 1;
1116 ent->inode = D_INO (entp); 1878 ent->inode = D_INO (entp);
1117 1879
1880 inode_bits |= ent->inode;
1881
1118 switch (D_TYPE (entp)) 1882 switch (D_TYPE (entp))
1119 { 1883 {
1120 default: 1884 default:
1121 ent->type = EIO_DT_UNKNOWN; 1885 ent->type = EIO_DT_UNKNOWN;
1122 flags |= EIO_READDIR_FOUND_UNKNOWN; 1886 flags |= EIO_READDIR_FOUND_UNKNOWN;
1123 break; 1887 break;
1124 1888
1125 #ifdef DT_FIFO 1889 #ifdef DT_FIFO
1126 case DT_FIFO: ent->type = EIO_DT_FIFO; break; 1890 case DT_FIFO: ent->type = EIO_DT_FIFO; break;
1127 #endif 1891 #endif
1128 #ifdef DT_CHR 1892 #ifdef DT_CHR
1129 case DT_CHR: ent->type = EIO_DT_CHR; break; 1893 case DT_CHR: ent->type = EIO_DT_CHR; break;
1130 #endif 1894 #endif
1895 #ifdef DT_MPC
1896 case DT_MPC: ent->type = EIO_DT_MPC; break;
1897 #endif
1131 #ifdef DT_DIR 1898 #ifdef DT_DIR
1132 case DT_DIR: ent->type = EIO_DT_DIR; break; 1899 case DT_DIR: ent->type = EIO_DT_DIR; break;
1133 #endif 1900 #endif
1901 #ifdef DT_NAM
1902 case DT_NAM: ent->type = EIO_DT_NAM; break;
1903 #endif
1134 #ifdef DT_BLK 1904 #ifdef DT_BLK
1135 case DT_BLK: ent->type = EIO_DT_BLK; break; 1905 case DT_BLK: ent->type = EIO_DT_BLK; break;
1136 #endif 1906 #endif
1907 #ifdef DT_MPB
1908 case DT_MPB: ent->type = EIO_DT_MPB; break;
1909 #endif
1137 #ifdef DT_REG 1910 #ifdef DT_REG
1138 case DT_REG: ent->type = EIO_DT_REG; break; 1911 case DT_REG: ent->type = EIO_DT_REG; break;
1139 #endif 1912 #endif
1913 #ifdef DT_NWK
1914 case DT_NWK: ent->type = EIO_DT_NWK; break;
1915 #endif
1916 #ifdef DT_CMP
1917 case DT_CMP: ent->type = EIO_DT_CMP; break;
1918 #endif
1140 #ifdef DT_LNK 1919 #ifdef DT_LNK
1141 case DT_LNK: ent->type = EIO_DT_LNK; break; 1920 case DT_LNK: ent->type = EIO_DT_LNK; break;
1142 #endif 1921 #endif
1143 #ifdef DT_SOCK 1922 #ifdef DT_SOCK
1144 case DT_SOCK: ent->type = EIO_DT_SOCK; break; 1923 case DT_SOCK: ent->type = EIO_DT_SOCK; break;
1145 #endif 1924 #endif
1925 #ifdef DT_DOOR
1926 case DT_DOOR: ent->type = EIO_DT_DOOR; break;
1927 #endif
1146 #ifdef DT_WHT 1928 #ifdef DT_WHT
1147 case DT_WHT: ent->type = EIO_DT_WHT; break; 1929 case DT_WHT: ent->type = EIO_DT_WHT; break;
1148 #endif 1930 #endif
1149 } 1931 }
1150 1932
1151 ent->score = 0; 1933 ent->score = 7;
1152 1934
1153 if (flags & EIO_READDIR_DIRS_FIRST) 1935 if (flags & EIO_READDIR_DIRS_FIRST)
1154 { 1936 {
1155 if (ent->type == EIO_DT_UNKNOWN) 1937 if (ent->type == EIO_DT_UNKNOWN)
1156 { 1938 {
1157 if (*name == '.') /* leading dots are likely directories, and, in any case, rare */ 1939 if (*name == '.') /* leading dots are likely directories, and, in any case, rare */
1158 ent->score = 98; 1940 ent->score = 1;
1159 else if (!strchr (name, '.')) /* absense of dots indicate likely dirs */ 1941 else if (!strchr (name, '.')) /* absense of dots indicate likely dirs */
1160 ent->score = len <= 4 ? 5 : len <= 7 ? 4 : 1; /* shorter == more likely dir, but avoid too many classes */ 1942 ent->score = len <= 2 ? 4 - len : len <= 4 ? 4 : len <= 7 ? 5 : 6; /* shorter == more likely dir, but avoid too many classes */
1161 } 1943 }
1162 else if (ent->type == DT_DIR) 1944 else if (ent->type == EIO_DT_DIR)
1163 ent->score = 100; 1945 ent->score = 0;
1164 } 1946 }
1165 } 1947 }
1166 1948
1167 namesoffs += len; 1949 namesoffs += len;
1168 ++dentoffs; 1950 ++dentoffs;
1169 } 1951 }
1952
1953 if (EIO_CANCELLED (req))
1954 {
1955 errno = ECANCELED;
1956 break;
1170 } 1957 }
1958
1959#ifdef _WIN32
1960 if (!FindNextFile (dirp, &entp))
1961 {
1962 FindClose (dirp);
1963 dirp = 0;
1964 }
1965#endif
1966 }
1967}
1968
1969/*****************************************************************************/
1970/* working directory stuff */
1971
1972#if HAVE_AT
1973
1974#define WD2FD(wd) ((wd) ? ((int)(long)(wd)) - 1 : AT_FDCWD)
1975
1976#ifndef O_SEARCH
1977# define O_SEARCH O_RDONLY
1978#endif
1979
1980eio_wd
1981eio_wd_open_sync (eio_wd wd, const char *path)
1982{
1983 int fd = openat (WD2FD (wd), path, O_CLOEXEC | O_SEARCH | O_DIRECTORY);
1984
1985 return fd >= 0 ? (eio_wd)(long)(fd + 1) : EIO_INVALID_WD;
1986}
1987
1988static eio_wd
1989eio__wd_open_sync (struct tmpbuf *tmpbuf, eio_wd wd, const char *path)
1990{
1991 return eio_wd_open_sync (wd, path);
1992}
1993
1994void
1995eio_wd_close_sync (eio_wd wd)
1996{
1997 int fd = WD2FD (wd);
1998
1999 if (fd >= 0)
2000 close (fd);
2001}
2002
2003static int
2004eio__truncateat (int dirfd, const char *path, off_t length)
2005{
2006 int fd = openat (dirfd, path, O_WRONLY | O_CLOEXEC);
2007 int res;
2008
2009 if (fd < 0)
2010 return fd;
2011
2012 res = ftruncate (fd, length);
2013 close (fd);
2014 return res;
2015}
2016
2017static int
2018eio__statvfsat (int dirfd, const char *path, struct statvfs *buf)
2019{
2020 int fd = openat (dirfd, path, O_SEARCH | O_CLOEXEC);
2021 int res;
2022
2023 if (fd < 0)
2024 return fd;
2025
2026 res = fstatvfs (fd, buf);
2027 close (fd);
2028 return res;
2029
2030}
2031
2032#else
2033
2034/* on legacy systems, we represent the working directories simply by their path strings */
2035
2036static const char *
2037wd_expand (struct tmpbuf *tmpbuf, eio_wd wd, const char *path)
2038{
2039 if (!wd || *path == '/')
2040 return path;
2041
2042 {
2043 int l1 = strlen ((const char *)wd);
2044 int l2 = strlen (path);
2045
2046 char *res = tmpbuf_get (tmpbuf, l1 + l2 + 2);
2047
2048 memcpy (res, wd, l1);
2049 res [l1] = '/';
2050 memcpy (res + l1 + 1, path, l2 + 1);
2051
2052 return res;
2053 }
2054}
2055
2056static eio_wd
2057eio__wd_open_sync (struct tmpbuf *tmpbuf, eio_wd wd, const char *path)
2058{
2059 if (*path == '/') /* absolute paths ignore wd */
2060 path = strdup (path);
2061 else if (path [0] == '.' && !path [1]) /* special case '.', as it is common */
2062 return wd;
1171 else 2063 else
1172 req->result = -1;
1173
1174 /* if user doesn't want the dents, do not provide it */
1175 if (!(flags & EIO_READDIR_DENTS))
1176 { 2064 {
1177 X_LOCK (wrklock); 2065 int len = eio__realpath (tmpbuf, wd, path);
1178 free (dents);
1179 req->ptr2 = req->ptr1;
1180 req->ptr1 = 0;
1181 X_UNLOCK (wrklock);
1182 }
1183}
1184 2066
1185#if !(_POSIX_MAPPED_FILES && _POSIX_SYNCHRONIZED_IO) 2067 path = EIO_INVALID_WD;
1186# undef msync
1187# define msync(a,b,c) ((errno = ENOSYS), -1)
1188#endif
1189 2068
1190int 2069 if (len >= 0)
1191eio__mtouch (void *mem, size_t len, int flags) 2070 {
1192{ 2071 ((char *)tmpbuf->ptr)[len] = 0;
1193 intptr_t addr = (intptr_t)mem; 2072 path = strdup (tmpbuf->ptr);
1194 intptr_t end = addr + len; 2073 }
1195#ifdef PAGESIZE 2074 }
1196 const intptr_t page = PAGESIZE;
1197#else
1198 static intptr_t page;
1199 2075
1200 if (!page) 2076 if (!path)
1201 page = sysconf (_SC_PAGESIZE); 2077 path = EIO_INVALID_WD;
1202#endif
1203 2078
1204 addr &= ~(page - 1); /* assume page size is always a power of two */ 2079 return (eio_wd)path;
2080}
1205 2081
1206 if (addr < end) 2082eio_wd
1207 if (flags) /* modify */ 2083eio_wd_open_sync (eio_wd wd, const char *path)
1208 do { *((volatile sig_atomic_t *)addr) |= 0; } while ((addr += page) < len); 2084{
1209 else 2085 struct tmpbuf tmpbuf = { 0 };
1210 do { *((volatile sig_atomic_t *)addr) ; } while ((addr += page) < len); 2086 wd = eio__wd_open_sync (&tmpbuf, wd, path);
2087 free (tmpbuf.ptr);
1211 2088
1212 return 0; 2089 return wd;
1213} 2090}
2091
2092void
2093eio_wd_close_sync (eio_wd wd)
2094{
2095 if (wd != EIO_INVALID_WD)
2096 free (wd);
2097}
2098
2099#endif
1214 2100
1215/*****************************************************************************/ 2101/*****************************************************************************/
1216 2102
1217#define ALLOC(len) \ 2103#define ALLOC(len) \
1218 if (!req->ptr2) \ 2104 if (!req->ptr2) \
… …
1233{ 2119{
1234 ETP_REQ *req; 2120 ETP_REQ *req;
1235 struct timespec ts; 2121 struct timespec ts;
1236 etp_worker *self = (etp_worker *)thr_arg; 2122 etp_worker *self = (etp_worker *)thr_arg;
1237 2123
2124#if HAVE_PRCTL_SET_NAME
2125 prctl (PR_SET_NAME, (unsigned long)"eio_thread", 0, 0, 0);
2126#endif
2127
1238 /* try to distribute timeouts somewhat randomly */ 2128 /* try to distribute timeouts somewhat evenly */
1239 ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL); 2129 ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL);
1240 2130
1241 for (;;) 2131 for (;;)
1242 { 2132 {
2133 ts.tv_sec = 0;
2134
1243 X_LOCK (reqlock); 2135 X_LOCK (reqlock);
1244 2136
1245 for (;;) 2137 for (;;)
1246 { 2138 {
1247 self->req = req = reqq_shift (&req_queue); 2139 req = reqq_shift (&req_queue);
1248 2140
1249 if (req) 2141 if (req)
1250 break; 2142 break;
1251 2143
2144 if (ts.tv_sec == 1) /* no request, but timeout detected, let's quit */
2145 {
2146 X_UNLOCK (reqlock);
2147 X_LOCK (wrklock);
2148 --started;
2149 X_UNLOCK (wrklock);
2150 goto quit;
2151 }
2152
1252 ++idle; 2153 ++idle;
1253 2154
1254 ts.tv_sec = time (0) + IDLE_TIMEOUT; 2155 if (idle <= max_idle)
1255 if (X_COND_TIMEDWAIT (reqwait, reqlock, ts) == ETIMEDOUT) 2156 /* we are allowed to idle, so do so without any timeout */
2157 X_COND_WAIT (reqwait, reqlock);
2158 else
1256 { 2159 {
1257 if (idle > max_idle) 2160 /* initialise timeout once */
1258 { 2161 if (!ts.tv_sec)
1259 --idle; 2162 ts.tv_sec = time (0) + idle_timeout;
1260 X_UNLOCK (reqlock);
1261 X_LOCK (wrklock);
1262 --started;
1263 X_UNLOCK (wrklock);
1264 goto quit;
1265 }
1266 2163
1267 /* we are allowed to idle, so do so without any timeout */
1268 X_COND_WAIT (reqwait, reqlock); 2164 if (X_COND_TIMEDWAIT (reqwait, reqlock, ts) == ETIMEDOUT)
2165 ts.tv_sec = 1; /* assuming this is not a value computed above.,.. */
1269 } 2166 }
1270 2167
1271 --idle; 2168 --idle;
1272 } 2169 }
1273 2170
… …
1276 X_UNLOCK (reqlock); 2173 X_UNLOCK (reqlock);
1277 2174
1278 if (req->type < 0) 2175 if (req->type < 0)
1279 goto quit; 2176 goto quit;
1280 2177
1281 if (!EIO_CANCELLED (req))
1282 ETP_EXECUTE (self, req); 2178 ETP_EXECUTE (self, req);
1283 2179
1284 X_LOCK (reslock); 2180 X_LOCK (reslock);
1285 2181
1286 ++npending; 2182 ++npending;
1287 2183
1288 if (!reqq_push (&res_queue, req) && want_poll_cb) 2184 if (!reqq_push (&res_queue, req) && want_poll_cb)
1289 want_poll_cb (); 2185 want_poll_cb ();
1290 2186
1291 self->req = 0;
1292 etp_worker_clear (self); 2187 etp_worker_clear (self);
1293 2188
1294 X_UNLOCK (reslock); 2189 X_UNLOCK (reslock);
1295 } 2190 }
1296 2191
1297quit: 2192quit:
2193 free (req);
2194
1298 X_LOCK (wrklock); 2195 X_LOCK (wrklock);
1299 etp_worker_free (self); 2196 etp_worker_free (self);
1300 X_UNLOCK (wrklock); 2197 X_UNLOCK (wrklock);
1301 2198
1302 return 0; 2199 return 0;
1303} 2200}
1304 2201
1305/*****************************************************************************/ 2202/*****************************************************************************/
1306 2203
2204int ecb_cold
1307int eio_init (void (*want_poll)(void), void (*done_poll)(void)) 2205eio_init (void (*want_poll)(void), void (*done_poll)(void))
1308{ 2206{
2207#if !HAVE_PREADWRITE
2208 X_MUTEX_CREATE (preadwritelock);
2209#endif
2210
1309 return etp_init (want_poll, done_poll); 2211 return etp_init (want_poll, done_poll);
1310} 2212}
1311 2213
2214ecb_inline void
1312static void eio_api_destroy (eio_req *req) 2215eio_api_destroy (eio_req *req)
1313{ 2216{
1314 free (req); 2217 free (req);
1315} 2218}
1316 2219
1317#define REQ(rtype) \ 2220#define REQ(rtype) \
… …
1336 { \ 2239 { \
1337 eio_api_destroy (req); \ 2240 eio_api_destroy (req); \
1338 return 0; \ 2241 return 0; \
1339 } 2242 }
1340 2243
2244static void
1341static void eio_execute (etp_worker *self, eio_req *req) 2245eio_execute (etp_worker *self, eio_req *req)
1342{ 2246{
1343 errno = 0; 2247#if HAVE_AT
2248 int dirfd;
2249#else
2250 const char *path;
2251#endif
2252
2253 if (ecb_expect_false (EIO_CANCELLED (req)))
2254 {
2255 req->result = -1;
2256 req->errorno = ECANCELED;
2257 return;
2258 }
2259
2260 if (ecb_expect_false (req->wd == EIO_INVALID_WD))
2261 {
2262 req->result = -1;
2263 req->errorno = ENOENT;
2264 return;
2265 }
2266
2267 if (req->type >= EIO_OPEN)
2268 {
2269 #if HAVE_AT
2270 dirfd = WD2FD (req->wd);
2271 #else
2272 path = wd_expand (&self->tmpbuf, req->wd, req->ptr1);
2273 #endif
2274 }
1344 2275
1345 switch (req->type) 2276 switch (req->type)
1346 { 2277 {
2278 case EIO_WD_OPEN: req->wd = eio__wd_open_sync (&self->tmpbuf, req->wd, req->ptr1);
2279 req->result = req->wd == EIO_INVALID_WD ? -1 : 0;
2280 break;
2281 case EIO_WD_CLOSE: req->result = 0;
2282 eio_wd_close_sync (req->wd); break;
2283
1347 case EIO_READ: ALLOC (req->size); 2284 case EIO_READ: ALLOC (req->size);
1348 req->result = req->offs >= 0 2285 req->result = req->offs >= 0
1349 ? pread (req->int1, req->ptr2, req->size, req->offs) 2286 ? pread (req->int1, req->ptr2, req->size, req->offs)
1350 : read (req->int1, req->ptr2, req->size); break; 2287 : read (req->int1, req->ptr2, req->size); break;
1351 case EIO_WRITE: req->result = req->offs >= 0 2288 case EIO_WRITE: req->result = req->offs >= 0
1352 ? pwrite (req->int1, req->ptr2, req->size, req->offs) 2289 ? pwrite (req->int1, req->ptr2, req->size, req->offs)
1353 : write (req->int1, req->ptr2, req->size); break; 2290 : write (req->int1, req->ptr2, req->size); break;
1354 2291
1355 case EIO_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break; 2292 case EIO_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1356 case EIO_SENDFILE: req->result = eio__sendfile (req->int1, req->int2, req->offs, req->size, self); break; 2293 case EIO_SENDFILE: req->result = eio__sendfile (req->int1, req->int2, req->offs, req->size); break;
2294
2295#if HAVE_AT
1357 2296
1358 case EIO_STAT: ALLOC (sizeof (EIO_STRUCT_STAT)); 2297 case EIO_STAT: ALLOC (sizeof (EIO_STRUCT_STAT));
1359 req->result = stat (req->ptr1, (EIO_STRUCT_STAT *)req->ptr2); break; 2298 req->result = fstatat (dirfd, req->ptr1, (EIO_STRUCT_STAT *)req->ptr2, 0); break;
1360 case EIO_LSTAT: ALLOC (sizeof (EIO_STRUCT_STAT)); 2299 case EIO_LSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));
1361 req->result = lstat (req->ptr1, (EIO_STRUCT_STAT *)req->ptr2); break; 2300 req->result = fstatat (dirfd, req->ptr1, (EIO_STRUCT_STAT *)req->ptr2, AT_SYMLINK_NOFOLLOW); break;
1362 case EIO_FSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));
1363 req->result = fstat (req->int1, (EIO_STRUCT_STAT *)req->ptr2); break;
1364
1365 case EIO_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break; 2301 case EIO_CHOWN: req->result = fchownat (dirfd, req->ptr1, req->int2, req->int3, 0); break;
1366 case EIO_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
1367 case EIO_CHMOD: req->result = chmod (req->ptr1, (mode_t)req->int2); break; 2302 case EIO_CHMOD: req->result = fchmodat (dirfd, req->ptr1, (mode_t)req->int2, 0); break;
1368 case EIO_FCHMOD: req->result = fchmod (req->int1, (mode_t)req->int2); break;
1369 case EIO_TRUNCATE: req->result = truncate (req->ptr1, req->offs); break; 2303 case EIO_TRUNCATE: req->result = eio__truncateat (dirfd, req->ptr1, req->offs); break;
1370 case EIO_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break;
1371
1372 case EIO_OPEN: req->result = open (req->ptr1, req->int1, (mode_t)req->int2); break; 2304 case EIO_OPEN: req->result = openat (dirfd, req->ptr1, req->int1, (mode_t)req->int2); break;
1373 case EIO_CLOSE: req->result = close (req->int1); break; 2305
1374 case EIO_DUP2: req->result = dup2 (req->int1, req->int2); break;
1375 case EIO_UNLINK: req->result = unlink (req->ptr1); break; 2306 case EIO_UNLINK: req->result = unlinkat (dirfd, req->ptr1, 0); break;
1376 case EIO_RMDIR: req->result = rmdir (req->ptr1); break; 2307 case EIO_RMDIR: req->result = unlinkat (dirfd, req->ptr1, AT_REMOVEDIR); break;
1377 case EIO_MKDIR: req->result = mkdir (req->ptr1, (mode_t)req->int2); break; 2308 case EIO_MKDIR: req->result = mkdirat (dirfd, req->ptr1, (mode_t)req->int2); break;
1378 case EIO_RENAME: req->result = rename (req->ptr1, req->ptr2); break; 2309 case EIO_RENAME: req->result = renameat (dirfd, req->ptr1, WD2FD (req->int3), req->ptr2); break;
1379 case EIO_LINK: req->result = link (req->ptr1, req->ptr2); break; 2310 case EIO_LINK: req->result = linkat (dirfd, req->ptr1, WD2FD (req->int3), req->ptr2, 0); break;
1380 case EIO_SYMLINK: req->result = symlink (req->ptr1, req->ptr2); break; 2311 case EIO_SYMLINK: req->result = symlinkat (req->ptr1, dirfd, req->ptr2); break;
1381 case EIO_MKNOD: req->result = mknod (req->ptr1, (mode_t)req->int2, (dev_t)req->int3); break; 2312 case EIO_MKNOD: req->result = mknodat (dirfd, req->ptr1, (mode_t)req->int2, (dev_t)req->offs); break;
1382
1383 case EIO_READLINK: ALLOC (NAME_MAX); 2313 case EIO_READLINK: ALLOC (PATH_MAX);
1384 req->result = readlink (req->ptr1, req->ptr2, NAME_MAX); break; 2314 req->result = readlinkat (dirfd, req->ptr1, req->ptr2, PATH_MAX); break;
1385 2315 case EIO_STATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS));
1386 case EIO_SYNC: req->result = 0; sync (); break; 2316 req->result = eio__statvfsat (dirfd, req->ptr1, (EIO_STRUCT_STATVFS *)req->ptr2); break;
1387 case EIO_FSYNC: req->result = fsync (req->int1); break;
1388 case EIO_FDATASYNC: req->result = fdatasync (req->int1); break;
1389 case EIO_MSYNC: req->result = msync (req->ptr2, req->size, req->int1); break;
1390 case EIO_MTOUCH: req->result = eio__mtouch (req->ptr2, req->size, req->int1); break;
1391 case EIO_SYNC_FILE_RANGE: req->result = eio__sync_file_range (req->int1, req->offs, req->size, req->int2); break;
1392
1393 case EIO_READDIR: eio__scandir (req, self); break;
1394
1395 case EIO_BUSY: 2317 case EIO_UTIME:
1396#ifdef _WIN32 2318 case EIO_FUTIME:
1397 Sleep (req->nv1 * 1000.); 2319 {
2320 struct timespec ts[2];
2321 struct timespec *times;
2322
2323 if (req->nv1 != -1. || req->nv2 != -1.)
2324 {
2325 ts[0].tv_sec = req->nv1;
2326 ts[0].tv_nsec = (req->nv1 - ts[0].tv_sec) * 1e9;
2327 ts[1].tv_sec = req->nv2;
2328 ts[1].tv_nsec = (req->nv2 - ts[1].tv_sec) * 1e9;
2329
2330 times = ts;
2331 }
2332 else
2333 times = 0;
2334
2335 req->result = req->type == EIO_FUTIME
2336 ? futimens (req->int1, times)
2337 : utimensat (dirfd, req->ptr1, times, 0);
2338 }
2339 break;
2340
1398#else 2341#else
1399 {
1400 struct timeval tv;
1401 2342
1402 tv.tv_sec = req->nv1; 2343 case EIO_STAT: ALLOC (sizeof (EIO_STRUCT_STAT));
1403 tv.tv_usec = (req->nv1 - tv.tv_sec) * 1000000.; 2344 req->result = stat (path , (EIO_STRUCT_STAT *)req->ptr2); break;
2345 case EIO_LSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));
2346 req->result = lstat (path , (EIO_STRUCT_STAT *)req->ptr2); break;
2347 case EIO_CHOWN: req->result = chown (path , req->int2, req->int3); break;
2348 case EIO_CHMOD: req->result = chmod (path , (mode_t)req->int2); break;
2349 case EIO_TRUNCATE: req->result = truncate (path , req->offs); break;
2350 case EIO_OPEN: req->result = open (path , req->int1, (mode_t)req->int2); break;
1404 2351
1405 req->result = select (0, 0, 0, 0, &tv); 2352 case EIO_UNLINK: req->result = unlink (path ); break;
1406 } 2353 case EIO_RMDIR: req->result = rmdir (path ); break;
1407#endif 2354 case EIO_MKDIR: req->result = mkdir (path , (mode_t)req->int2); break;
1408 break; 2355 case EIO_RENAME: req->result = rename (path , req->ptr2); break;
2356 case EIO_LINK: req->result = link (path , req->ptr2); break;
2357 case EIO_SYMLINK: req->result = symlink (path , req->ptr2); break;
2358 case EIO_MKNOD: req->result = mknod (path , (mode_t)req->int2, (dev_t)req->offs); break;
2359 case EIO_READLINK: ALLOC (PATH_MAX);
2360 req->result = readlink (path, req->ptr2, PATH_MAX); break;
2361 case EIO_STATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS));
2362 req->result = statvfs (path , (EIO_STRUCT_STATVFS *)req->ptr2); break;
1409 2363
1410 case EIO_UTIME: 2364 case EIO_UTIME:
1411 case EIO_FUTIME: 2365 case EIO_FUTIME:
1412 { 2366 {
1413 struct timeval tv[2]; 2367 struct timeval tv[2];
1414 struct timeval *times; 2368 struct timeval *times;
1415 2369
1416 if (req->nv1 != -1. || req->nv2 != -1.) 2370 if (req->nv1 != -1. || req->nv2 != -1.)
1417 { 2371 {
1418 tv[0].tv_sec = req->nv1; 2372 tv[0].tv_sec = req->nv1;
1419 tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.; 2373 tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1e6;
1420 tv[1].tv_sec = req->nv2; 2374 tv[1].tv_sec = req->nv2;
1421 tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.; 2375 tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1e6;
1422 2376
1423 times = tv; 2377 times = tv;
1424 } 2378 }
1425 else 2379 else
1426 times = 0; 2380 times = 0;
1427
1428 2381
1429 req->result = req->type == EIO_FUTIME 2382 req->result = req->type == EIO_FUTIME
1430 ? futimes (req->int1, times) 2383 ? futimes (req->int1, times)
1431 : utimes (req->ptr1, times); 2384 : utimes (req->ptr1, times);
1432 } 2385 }
1433 break; 2386 break;
1434 2387
2388#endif
2389
2390 case EIO_REALPATH: if (0 <= (req->result = eio__realpath (&self->tmpbuf, req->wd, req->ptr1)))
2391 {
2392 ALLOC (req->result);
2393 memcpy (req->ptr2, self->tmpbuf.ptr, req->result);
2394 }
2395 break;
2396
2397 case EIO_FSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));
2398 req->result = fstat (req->int1, (EIO_STRUCT_STAT *)req->ptr2); break;
2399
2400 case EIO_FSTATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS));
2401 req->result = fstatvfs (req->int1, (EIO_STRUCT_STATVFS *)req->ptr2); break;
2402
2403 case EIO_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
2404 case EIO_FCHMOD: req->result = fchmod (req->int1, (mode_t)req->int2); break;
2405 case EIO_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break;
2406
2407 case EIO_CLOSE: req->result = close (req->int1); break;
2408 case EIO_DUP2: req->result = dup2 (req->int1, req->int2); break;
2409 case EIO_SYNC: req->result = 0; sync (); break;
2410 case EIO_FSYNC: req->result = fsync (req->int1); break;
2411 case EIO_FDATASYNC: req->result = fdatasync (req->int1); break;
2412 case EIO_SYNCFS: req->result = eio__syncfs (req->int1); break;
2413 case EIO_SYNC_FILE_RANGE: req->result = eio__sync_file_range (req->int1, req->offs, req->size, req->int2); break;
2414 case EIO_MSYNC: req->result = eio__msync (req->ptr2, req->size, req->int1); break;
2415 case EIO_MTOUCH: req->result = eio__mtouch (req); break;
2416 case EIO_MLOCK: req->result = eio__mlock (req->ptr2, req->size); break;
2417 case EIO_MLOCKALL: req->result = eio__mlockall (req->int1); break;
2418 case EIO_FALLOCATE: req->result = eio__fallocate (req->int1, req->int2, req->offs, req->size); break;
2419
2420 case EIO_READDIR: eio__scandir (req); break;
2421
2422 case EIO_BUSY:
2423#ifdef _WIN32
2424 Sleep (req->nv1 * 1e3);
2425#else
2426 {
2427 struct timeval tv;
2428
2429 tv.tv_sec = req->nv1;
2430 tv.tv_usec = (req->nv1 - tv.tv_sec) * 1e6;
2431
2432 req->result = select (0, 0, 0, 0, &tv);
2433 }
2434#endif
2435 break;
2436
1435 case EIO_GROUP: 2437 case EIO_GROUP:
1436 abort (); /* handled in eio_request */ 2438 abort (); /* handled in eio_request */
1437 2439
1438 case EIO_NOP: 2440 case EIO_NOP:
1439 req->result = 0; 2441 req->result = 0;
1440 break; 2442 break;
1441 2443
1442 case EIO_CUSTOM: 2444 case EIO_CUSTOM:
1443 ((void (*)(eio_req *))req->feed) (req); 2445 req->feed (req);
1444 break; 2446 break;
1445 2447
1446 default: 2448 default:
2449 errno = ENOSYS;
1447 req->result = -1; 2450 req->result = -1;
1448 break; 2451 break;
1449 } 2452 }
1450 2453
1451 req->errorno = errno; 2454 req->errorno = errno;
… …
1476eio_req *eio_msync (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data) 2479eio_req *eio_msync (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data)
1477{ 2480{
1478 REQ (EIO_MSYNC); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND; 2481 REQ (EIO_MSYNC); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND;
1479} 2482}
1480 2483
2484eio_req *eio_fdatasync (int fd, int pri, eio_cb cb, void *data)
2485{
2486 REQ (EIO_FDATASYNC); req->int1 = fd; SEND;
2487}
2488
2489eio_req *eio_syncfs (int fd, int pri, eio_cb cb, void *data)
2490{
2491 REQ (EIO_SYNCFS); req->int1 = fd; SEND;
2492}
2493
2494eio_req *eio_sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags, int pri, eio_cb cb, void *data)
2495{
2496 REQ (EIO_SYNC_FILE_RANGE); req->int1 = fd; req->offs = offset; req->size = nbytes; req->int2 = flags; SEND;
2497}
2498
1481eio_req *eio_mtouch (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data) 2499eio_req *eio_mtouch (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data)
1482{ 2500{
1483 REQ (EIO_MTOUCH); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND; 2501 REQ (EIO_MTOUCH); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND;
1484} 2502}
1485 2503
1486eio_req *eio_sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags, int pri, eio_cb cb, void *data) 2504eio_req *eio_mlock (void *addr, size_t length, int pri, eio_cb cb, void *data)
1487{ 2505{
1488 REQ (EIO_SYNC_FILE_RANGE); req->int1 = fd; req->offs = offset; req->size = nbytes; req->int2 = flags; SEND; 2506 REQ (EIO_MLOCK); req->ptr2 = addr; req->size = length; SEND;
1489} 2507}
1490 2508
1491eio_req *eio_fdatasync (int fd, int pri, eio_cb cb, void *data) 2509eio_req *eio_mlockall (int flags, int pri, eio_cb cb, void *data)
1492{ 2510{
1493 REQ (EIO_FDATASYNC); req->int1 = fd; SEND; 2511 REQ (EIO_MLOCKALL); req->int1 = flags; SEND;
2512}
2513
2514eio_req *eio_fallocate (int fd, int mode, off_t offset, size_t len, int pri, eio_cb cb, void *data)
2515{
2516 REQ (EIO_FALLOCATE); req->int1 = fd; req->int2 = mode; req->offs = offset; req->size = len; SEND;
1494} 2517}
1495 2518
1496eio_req *eio_close (int fd, int pri, eio_cb cb, void *data) 2519eio_req *eio_close (int fd, int pri, eio_cb cb, void *data)
1497{ 2520{
1498 REQ (EIO_CLOSE); req->int1 = fd; SEND; 2521 REQ (EIO_CLOSE); req->int1 = fd; SEND;
… …
1516eio_req *eio_fstat (int fd, int pri, eio_cb cb, void *data) 2539eio_req *eio_fstat (int fd, int pri, eio_cb cb, void *data)
1517{ 2540{
1518 REQ (EIO_FSTAT); req->int1 = fd; SEND; 2541 REQ (EIO_FSTAT); req->int1 = fd; SEND;
1519} 2542}
1520 2543
2544eio_req *eio_fstatvfs (int fd, int pri, eio_cb cb, void *data)
2545{
2546 REQ (EIO_FSTATVFS); req->int1 = fd; SEND;
2547}
2548
1521eio_req *eio_futime (int fd, double atime, double mtime, int pri, eio_cb cb, void *data) 2549eio_req *eio_futime (int fd, double atime, double mtime, int pri, eio_cb cb, void *data)
1522{ 2550{
1523 REQ (EIO_FUTIME); req->int1 = fd; req->nv1 = atime; req->nv2 = mtime; SEND; 2551 REQ (EIO_FUTIME); req->int1 = fd; req->nv1 = atime; req->nv2 = mtime; SEND;
1524} 2552}
1525 2553
… …
1531eio_req *eio_fchmod (int fd, mode_t mode, int pri, eio_cb cb, void *data) 2559eio_req *eio_fchmod (int fd, mode_t mode, int pri, eio_cb cb, void *data)
1532{ 2560{
1533 REQ (EIO_FCHMOD); req->int1 = fd; req->int2 = (long)mode; SEND; 2561 REQ (EIO_FCHMOD); req->int1 = fd; req->int2 = (long)mode; SEND;
1534} 2562}
1535 2563
1536eio_req *eio_fchown (int fd, uid_t uid, gid_t gid, int pri, eio_cb cb, void *data) 2564eio_req *eio_fchown (int fd, eio_uid_t uid, eio_gid_t gid, int pri, eio_cb cb, void *data)
1537{ 2565{
1538 REQ (EIO_FCHOWN); req->int1 = fd; req->int2 = (long)uid; req->int3 = (long)gid; SEND; 2566 REQ (EIO_FCHOWN); req->int1 = fd; req->int2 = (long)uid; req->int3 = (long)gid; SEND;
1539} 2567}
1540 2568
1541eio_req *eio_dup2 (int fd, int fd2, int pri, eio_cb cb, void *data) 2569eio_req *eio_dup2 (int fd, int fd2, int pri, eio_cb cb, void *data)
… …
1561eio_req *eio_truncate (const char *path, off_t offset, int pri, eio_cb cb, void *data) 2589eio_req *eio_truncate (const char *path, off_t offset, int pri, eio_cb cb, void *data)
1562{ 2590{
1563 REQ (EIO_TRUNCATE); PATH; req->offs = offset; SEND; 2591 REQ (EIO_TRUNCATE); PATH; req->offs = offset; SEND;
1564} 2592}
1565 2593
1566eio_req *eio_chown (const char *path, uid_t uid, gid_t gid, int pri, eio_cb cb, void *data) 2594eio_req *eio_chown (const char *path, eio_uid_t uid, eio_gid_t gid, int pri, eio_cb cb, void *data)
1567{ 2595{
1568 REQ (EIO_CHOWN); PATH; req->int2 = (long)uid; req->int3 = (long)gid; SEND; 2596 REQ (EIO_CHOWN); PATH; req->int2 = (long)uid; req->int3 = (long)gid; SEND;
1569} 2597}
1570 2598
1571eio_req *eio_chmod (const char *path, mode_t mode, int pri, eio_cb cb, void *data) 2599eio_req *eio_chmod (const char *path, mode_t mode, int pri, eio_cb cb, void *data)
… …
1587eio_req *eio_readlink (const char *path, int pri, eio_cb cb, void *data) 2615eio_req *eio_readlink (const char *path, int pri, eio_cb cb, void *data)
1588{ 2616{
1589 return eio__1path (EIO_READLINK, path, pri, cb, data); 2617 return eio__1path (EIO_READLINK, path, pri, cb, data);
1590} 2618}
1591 2619
2620eio_req *eio_realpath (const char *path, int pri, eio_cb cb, void *data)
2621{
2622 return eio__1path (EIO_REALPATH, path, pri, cb, data);
2623}
2624
1592eio_req *eio_stat (const char *path, int pri, eio_cb cb, void *data) 2625eio_req *eio_stat (const char *path, int pri, eio_cb cb, void *data)
1593{ 2626{
1594 return eio__1path (EIO_STAT, path, pri, cb, data); 2627 return eio__1path (EIO_STAT, path, pri, cb, data);
1595} 2628}
1596 2629
1597eio_req *eio_lstat (const char *path, int pri, eio_cb cb, void *data) 2630eio_req *eio_lstat (const char *path, int pri, eio_cb cb, void *data)
1598{ 2631{
1599 return eio__1path (EIO_LSTAT, path, pri, cb, data); 2632 return eio__1path (EIO_LSTAT, path, pri, cb, data);
1600} 2633}
1601 2634
2635eio_req *eio_statvfs (const char *path, int pri, eio_cb cb, void *data)
2636{
2637 return eio__1path (EIO_STATVFS, path, pri, cb, data);
2638}
2639
1602eio_req *eio_unlink (const char *path, int pri, eio_cb cb, void *data) 2640eio_req *eio_unlink (const char *path, int pri, eio_cb cb, void *data)
1603{ 2641{
1604 return eio__1path (EIO_UNLINK, path, pri, cb, data); 2642 return eio__1path (EIO_UNLINK, path, pri, cb, data);
1605} 2643}
1606 2644
… …
1614 REQ (EIO_READDIR); PATH; req->int1 = flags; SEND; 2652 REQ (EIO_READDIR); PATH; req->int1 = flags; SEND;
1615} 2653}
1616 2654
1617eio_req *eio_mknod (const char *path, mode_t mode, dev_t dev, int pri, eio_cb cb, void *data) 2655eio_req *eio_mknod (const char *path, mode_t mode, dev_t dev, int pri, eio_cb cb, void *data)
1618{ 2656{
1619 REQ (EIO_MKNOD); PATH; req->int2 = (long)mode; req->int3 = (long)dev; SEND; 2657 REQ (EIO_MKNOD); PATH; req->int2 = (long)mode; req->offs = (off_t)dev; SEND;
1620} 2658}
1621 2659
1622static eio_req * 2660static eio_req *
1623eio__2path (int type, const char *path, const char *new_path, int pri, eio_cb cb, void *data) 2661eio__2path (int type, const char *path, const char *new_path, int pri, eio_cb cb, void *data)
1624{ 2662{
… …
1648eio_req *eio_rename (const char *path, const char *new_path, int pri, eio_cb cb, void *data) 2686eio_req *eio_rename (const char *path, const char *new_path, int pri, eio_cb cb, void *data)
1649{ 2687{
1650 return eio__2path (EIO_RENAME, path, new_path, pri, cb, data); 2688 return eio__2path (EIO_RENAME, path, new_path, pri, cb, data);
1651} 2689}
1652 2690
1653eio_req *eio_custom (eio_cb execute, int pri, eio_cb cb, void *data) 2691eio_req *eio_custom (void (*execute)(eio_req *), int pri, eio_cb cb, void *data)
1654{ 2692{
1655 REQ (EIO_CUSTOM); req->feed = (void (*)(eio_req *))execute; SEND; 2693 REQ (EIO_CUSTOM); req->feed = execute; SEND;
1656} 2694}
1657 2695
1658#endif 2696#endif
1659 2697
1660eio_req *eio_grp (eio_cb cb, void *data) 2698eio_req *eio_grp (eio_cb cb, void *data)
… …
1669#undef SEND 2707#undef SEND
1670 2708
1671/*****************************************************************************/ 2709/*****************************************************************************/
1672/* grp functions */ 2710/* grp functions */
1673 2711
2712void
1674void eio_grp_feed (eio_req *grp, void (*feed)(eio_req *req), int limit) 2713eio_grp_feed (eio_req *grp, void (*feed)(eio_req *req), int limit)
1675{ 2714{
1676 grp->int2 = limit; 2715 grp->int2 = limit;
1677 grp->feed = feed; 2716 grp->feed = feed;
1678 2717
1679 grp_try_feed (grp); 2718 grp_try_feed (grp);
1680} 2719}
1681 2720
2721void
1682void eio_grp_limit (eio_req *grp, int limit) 2722eio_grp_limit (eio_req *grp, int limit)
1683{ 2723{
1684 grp->int2 = limit; 2724 grp->int2 = limit;
1685 2725
1686 grp_try_feed (grp); 2726 grp_try_feed (grp);
1687} 2727}
1688 2728
2729void
1689void eio_grp_add (eio_req *grp, eio_req *req) 2730eio_grp_add (eio_req *grp, eio_req *req)
1690{ 2731{
1691 assert (("cannot add requests to IO::AIO::GRP after the group finished", grp->int1 != 2)); 2732 assert (("cannot add requests to IO::AIO::GRP after the group finished", grp->int1 != 2));
1692 2733
1693 grp->flags |= EIO_FLAG_GROUPADD; 2734 grp->flags |= EIO_FLAG_GROUPADD;
1694 2735
… …
1705} 2746}
1706 2747
1707/*****************************************************************************/ 2748/*****************************************************************************/
1708/* misc garbage */ 2749/* misc garbage */
1709 2750
2751eio_ssize_t
1710ssize_t eio_sendfile_sync (int ofd, int ifd, off_t offset, size_t count) 2752eio_sendfile_sync (int ofd, int ifd, off_t offset, size_t count)
1711{ 2753{
1712 etp_worker wrk;
1713
1714 wrk.dbuf = 0;
1715
1716 eio__sendfile (ofd, ifd, offset, count, &wrk); 2754 return eio__sendfile (ofd, ifd, offset, count);
1717
1718 if (wrk.dbuf)
1719 free (wrk.dbuf);
1720} 2755}
1721 2756

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