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Comparing libeio/eio.c (file contents):
Revision 1.49 by root, Sat Jan 2 14:24:32 2010 UTC vs.
Revision 1.136 by root, Thu Jun 25 17:05:07 2015 UTC

1/* 1/*
2 * libeio implementation 2 * libeio implementation
3 * 3 *
4 * Copyright (c) 2007,2008,2009,2010 Marc Alexander Lehmann <libeio@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010,2011,2012,2013 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 *
10 * 1. Redistributions of source code must retain the above copyright notice, 10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer. 11 * this list of conditions and the following disclaimer.
12 * 12 *
13 * 2. Redistributions in binary form must reproduce the above copyright 13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the 14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution. 15 * documentation and/or other materials provided with the distribution.
16 * 16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- 18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO 19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- 20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
… …
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/* intptr_t comes from unistd.h, says POSIX/UNIX/tradition */
64/* intptr_t only comes from stdint.h, says idiot openbsd coder */
65#if HAVE_STDINT_H
66# include <stdint.h>
67#endif
68
69#ifndef ECANCELED
70# define ECANCELED EDOM
71#endif
72#ifndef ELOOP
73# define ELOOP EDOM
74#endif
75
76#if !defined(ENOTSOCK) && defined(WSAENOTSOCK)
77# define ENOTSOCK WSAENOTSOCK
78#endif
79
80static void eio_destroy (eio_req *req);
81
58#ifndef EIO_FINISH 82#ifndef EIO_FINISH
59# define EIO_FINISH(req) ((req)->finish) && !EIO_CANCELLED (req) ? (req)->finish (req) : 0 83# define EIO_FINISH(req) ((req)->finish) && !EIO_CANCELLED (req) ? (req)->finish (req) : 0
60#endif 84#endif
61 85
62#ifndef EIO_DESTROY 86#ifndef EIO_DESTROY
… …
65 89
66#ifndef EIO_FEED 90#ifndef EIO_FEED
67# define EIO_FEED(req) do { if ((req)->feed ) (req)->feed (req); } while (0) 91# define EIO_FEED(req) do { if ((req)->feed ) (req)->feed (req); } while (0)
68#endif 92#endif
69 93
94#ifndef EIO_FD_TO_WIN32_HANDLE
95# define EIO_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
96#endif
97#ifndef EIO_WIN32_HANDLE_TO_FD
98# define EIO_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
99#endif
100
101#define EIO_ERRNO(errval,retval) ((errno = errval), retval)
102
103#define EIO_ENOSYS() EIO_ERRNO (ENOSYS, -1)
104
70#ifdef _WIN32 105#ifdef _WIN32
71 106
72 /*doh*/ 107 #undef PAGESIZE
108 #define PAGESIZE 4096 /* GetSystemInfo? */
109
110 /* TODO: look at how perl does stat (non-sloppy), unlink (ro-files), utime, link */
111
112 #ifdef EIO_STRUCT_STATI64
113 /* look at perl's non-sloppy stat */
114 #define stat(path,buf) _stati64 (path,buf)
115 #define fstat(fd,buf) _fstati64 (fd,buf)
116 #endif
117 #define lstat(path,buf) stat (path,buf)
118 #define fsync(fd) (FlushFileBuffers ((HANDLE)EIO_FD_TO_WIN32_HANDLE (fd)) ? 0 : EIO_ERRNO (EBADF, -1))
119 #define mkdir(path,mode) _mkdir (path)
120 #define link(old,neu) (CreateHardLink (neu, old, 0) ? 0 : EIO_ERRNO (ENOENT, -1))
121
122 #define chmod(path,mode) _chmod (path, mode)
123 #define dup(fd) _dup (fd)
124 #define dup2(fd1,fd2) _dup2 (fd1, fd2)
125 #define pipe(fds) _pipe (fds, 4096, O_BINARY)
126
127 #define fchmod(fd,mode) EIO_ENOSYS ()
128 #define chown(path,uid,gid) EIO_ENOSYS ()
129 #define fchown(fd,uid,gid) EIO_ENOSYS ()
130 #define truncate(path,offs) EIO_ENOSYS () /* far-miss: SetEndOfFile */
131 #define ftruncate(fd,offs) EIO_ENOSYS () /* near-miss: SetEndOfFile */
132 #define mknod(path,mode,dev) EIO_ENOSYS ()
133 #define sync() EIO_ENOSYS ()
134 #define readlink(path,buf,s) EIO_ENOSYS ()
135 #define statvfs(path,buf) EIO_ENOSYS ()
136 #define fstatvfs(fd,buf) EIO_ENOSYS ()
137
138 #define pread(fd,buf,count,offset) eio__pread (fd, buf, count, offset)
139 #define pwrite(fd,buf,count,offset) eio__pwrite (fd, buf, count, offset)
140
141 #if __GNUC__
142 typedef long long eio_off_t; /* signed for compatibility to msvc */
143 #else
144 typedef __int64 eio_off_t; /* unsigned not supported by msvc */
145 #endif
146
147 static eio_ssize_t
148 eio__pread (int fd, void *buf, eio_ssize_t count, eio_off_t offset)
149 {
150 OVERLAPPED o = { 0 };
151 DWORD got;
152
153 o.Offset = offset;
154 o.OffsetHigh = offset >> 32;
155
156 return ReadFile ((HANDLE)EIO_FD_TO_WIN32_HANDLE (fd), buf, count, &got, &o)
157 ? got : -1;
158 }
159
160 static eio_ssize_t
161 eio__pwrite (int fd, void *buf, eio_ssize_t count, eio_off_t offset)
162 {
163 OVERLAPPED o = { 0 };
164 DWORD got;
165
166 o.Offset = offset;
167 o.OffsetHigh = offset >> 32;
168
169 return WriteFile ((HANDLE)EIO_FD_TO_WIN32_HANDLE (fd), buf, count, &got, &o)
170 ? got : -1;
171 }
172
173 /* rename() uses MoveFile, which fails to overwrite */
174 #define rename(old,neu) eio__rename (old, neu)
175
176 static int
177 eio__rename (const char *old, const char *neu)
178 {
179 if (MoveFileEx (old, neu, MOVEFILE_REPLACE_EXISTING))
180 return 0;
181
182 /* should steal _dosmaperr */
183 switch (GetLastError ())
184 {
185 case ERROR_FILE_NOT_FOUND:
186 case ERROR_PATH_NOT_FOUND:
187 case ERROR_INVALID_DRIVE:
188 case ERROR_NO_MORE_FILES:
189 case ERROR_BAD_NETPATH:
190 case ERROR_BAD_NET_NAME:
191 case ERROR_BAD_PATHNAME:
192 case ERROR_FILENAME_EXCED_RANGE:
193 errno = ENOENT;
194 break;
195
196 default:
197 errno = EACCES;
198 break;
199 }
200
201 return -1;
202 }
203
204 /* we could even stat and see if it exists */
205 static int
206 symlink (const char *old, const char *neu)
207 {
208 #if WINVER >= 0x0600
209 if (CreateSymbolicLink (neu, old, 1))
210 return 0;
211
212 if (CreateSymbolicLink (neu, old, 0))
213 return 0;
214 #endif
215
216 return EIO_ERRNO (ENOENT, -1);
217 }
218
219 /* POSIX API only, causing trouble for win32 apps */
220 #define CreateHardLink(neu,old,flags) 0 /* not really creating hardlink, still using relative paths? */
221 #define CreateSymbolicLink(neu,old,flags) 0 /* vista+ only */
222
223 struct statvfs
224 {
225 int dummy;
226 };
227
228 #define DT_DIR EIO_DT_DIR
229 #define DT_REG EIO_DT_REG
230 #define D_NAME(entp) entp.cFileName
231 #define D_TYPE(entp) (entp.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY ? DT_DIR : DT_REG)
232
73#else 233#else
74 234
75# include "config.h"
76# include <sys/time.h> 235 #include <sys/time.h>
77# include <sys/select.h> 236 #include <sys/select.h>
78# include <sys/mman.h>
79# include <unistd.h> 237 #include <unistd.h>
238 #include <signal.h>
239 #include <dirent.h>
240
241 #ifdef ANDROID
242 #include <sys/vfs.h>
243 #define statvfs statfs
244 #define fstatvfs fstatfs
245 #include <asm/page.h> /* supposedly limits.h does #define PAGESIZE PAGESIZE */
246 #else
247 #include <sys/statvfs.h>
248 #endif
249
250 #if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
251 #include <sys/mman.h>
252 #endif
253
254 #define D_NAME(entp) entp->d_name
255
256 /* POSIX_SOURCE is useless on bsd's, and XOPEN_SOURCE is unreliable there, too */
257 #if __FreeBSD__ || __NetBSD__ || __OpenBSD__
258 #define _DIRENT_HAVE_D_TYPE /* sigh */
259 #define D_INO(de) (de)->d_fileno
260 #define D_NAMLEN(de) (de)->d_namlen
261 #elif __linux || defined d_ino || _XOPEN_SOURCE >= 600
262 #define D_INO(de) (de)->d_ino
263 #endif
264
265 #ifdef _D_EXACT_NAMLEN
266 #undef D_NAMLEN
267 #define D_NAMLEN(de) _D_EXACT_NAMLEN (de)
268 #endif
269
270 #ifdef _DIRENT_HAVE_D_TYPE
271 #define D_TYPE(de) (de)->d_type
272 #endif
273
274 #ifndef EIO_STRUCT_DIRENT
275 #define EIO_STRUCT_DIRENT struct dirent
276 #endif
277
278#endif
279
280#if HAVE_UTIMES
80# include <utime.h> 281# include <utime.h>
81# include <signal.h>
82# include <dirent.h>
83
84/* POSIX_SOURCE is useless on bsd's, and XOPEN_SOURCE is unreliable there, too */
85# if __freebsd || defined __NetBSD__ || defined __OpenBSD__
86# define _DIRENT_HAVE_D_TYPE /* sigh */
87# define D_INO(de) (de)->d_fileno
88# define D_NAMLEN(de) (de)->d_namlen
89# elif __linux || defined d_ino || _XOPEN_SOURCE >= 600
90# define D_INO(de) (de)->d_ino
91# endif 282#endif
92 283
93#ifdef _D_EXACT_NAMLEN 284#if HAVE_SYS_SYSCALL_H
94# undef D_NAMLEN 285# include <sys/syscall.h>
95# define D_NAMLEN(de) _D_EXACT_NAMLEN (de)
96#endif
97
98# ifdef _DIRENT_HAVE_D_TYPE
99# define D_TYPE(de) (de)->d_type
100# endif 286#endif
101 287
102# ifndef EIO_STRUCT_DIRENT 288#if HAVE_SYS_PRCTL_H
103# define EIO_STRUCT_DIRENT struct dirent 289# include <sys/prctl.h>
104# endif
105
106#endif 290#endif
107 291
108#if HAVE_SENDFILE 292#if HAVE_SENDFILE
109# if __linux 293# if __linux
110# include <sys/sendfile.h> 294# include <sys/sendfile.h>
111# elif __freebsd || defined __APPLE__ 295# elif __FreeBSD__ || defined __APPLE__
112# include <sys/socket.h> 296# include <sys/socket.h>
113# include <sys/uio.h> 297# include <sys/uio.h>
114# elif __hpux 298# elif __hpux
115# include <sys/socket.h> 299# include <sys/socket.h>
116# elif __solaris 300# elif __solaris
… …
125#endif 309#endif
126#ifndef D_INO 310#ifndef D_INO
127# define D_INO(de) 0 311# define D_INO(de) 0
128#endif 312#endif
129#ifndef D_NAMLEN 313#ifndef D_NAMLEN
130# define D_NAMLEN(de) strlen ((de)->d_name) 314# define D_NAMLEN(entp) strlen (D_NAME (entp))
131#endif 315#endif
132
133/* number of seconds after which an idle threads exit */
134#define IDLE_TIMEOUT 10
135 316
136/* used for struct dirent, AIX doesn't provide it */ 317/* used for struct dirent, AIX doesn't provide it */
137#ifndef NAME_MAX 318#ifndef NAME_MAX
138# define NAME_MAX 4096 319# define NAME_MAX 4096
139#endif 320#endif
140 321
322/* used for readlink etc. */
323#ifndef PATH_MAX
324# define PATH_MAX 4096
325#endif
326
141/* buffer size for various temporary buffers */ 327/* buffer size for various temporary buffers */
142#define EIO_BUFSIZE 65536 328#define EIO_BUFSIZE 65536
143 329
144#define dBUF \ 330#define dBUF \
145 char *eio_buf; \
146 ETP_WORKER_LOCK (self); \
147 self->dbuf = eio_buf = malloc (EIO_BUFSIZE); \ 331 char *eio_buf = malloc (EIO_BUFSIZE); \
148 ETP_WORKER_UNLOCK (self); \
149 errno = ENOMEM; \ 332 errno = ENOMEM; \
150 if (!eio_buf) \ 333 if (!eio_buf) \
151 return -1; 334 return -1
152 335
153#define EIO_TICKS ((1000000 + 1023) >> 10) 336#define FUBd \
337 free (eio_buf)
154 338
155/*****************************************************************************/ 339/*****************************************************************************/
156 340
157#if __GNUC__ >= 3 341struct etp_tmpbuf;
158# define expect(expr,value) __builtin_expect ((expr),(value)) 342
343#if _POSIX_VERSION >= 200809L
344 #define HAVE_AT 1
345 #define WD2FD(wd) ((wd) ? (wd)->fd : AT_FDCWD)
346 #ifndef O_SEARCH
347 #define O_SEARCH O_RDONLY
348 #endif
159#else 349#else
160# define expect(expr,value) (expr) 350 #define HAVE_AT 0
351 static const char *wd_expand (struct etp_tmpbuf *tmpbuf, eio_wd wd, const char *path);
161#endif 352#endif
162 353
163#define expect_false(expr) expect ((expr) != 0, 0) 354struct eio_pwd
164#define expect_true(expr) expect ((expr) != 0, 1) 355{
356#if HAVE_AT
357 int fd;
358#endif
359 int len;
360 char str[1]; /* actually, a 0-terminated canonical path */
361};
165 362
166/*****************************************************************************/ 363/*****************************************************************************/
167 364
168#define ETP_PRI_MIN EIO_PRI_MIN 365#define ETP_PRI_MIN EIO_PRI_MIN
169#define ETP_PRI_MAX EIO_PRI_MAX 366#define ETP_PRI_MAX EIO_PRI_MAX
367
368#define ETP_TYPE_QUIT -1
369#define ETP_TYPE_GROUP EIO_GROUP
170 370
171struct etp_worker; 371struct etp_worker;
172 372
173#define ETP_REQ eio_req 373#define ETP_REQ eio_req
174#define ETP_DESTROY(req) eio_destroy (req) 374#define ETP_DESTROY(req) eio_destroy (req)
175static int eio_finish (eio_req *req); 375static int eio_finish (eio_req *req);
176#define ETP_FINISH(req) eio_finish (req) 376#define ETP_FINISH(req) eio_finish (req)
177static void eio_execute (struct etp_worker *self, eio_req *req); 377static void eio_execute (struct etp_worker *self, eio_req *req);
178#define ETP_EXECUTE(wrk,req) eio_execute (wrk,req) 378#define ETP_EXECUTE(wrk,req) eio_execute (wrk, req)
179 379
180#define ETP_WORKER_CLEAR(req) \ 380#include "etp.c"
181 if (wrk->dbuf) \
182 { \
183 free (wrk->dbuf); \
184 wrk->dbuf = 0; \
185 } \
186 \
187 if (wrk->dirp) \
188 { \
189 closedir (wrk->dirp); \
190 wrk->dirp = 0; \
191 }
192
193#define ETP_WORKER_COMMON \
194 void *dbuf; \
195 DIR *dirp;
196 381
197/*****************************************************************************/ 382/*****************************************************************************/
198 383
199#define ETP_NUM_PRI (ETP_PRI_MAX - ETP_PRI_MIN + 1)
200
201/* calculate time difference in ~1/EIO_TICKS of a second */
202static int tvdiff (struct timeval *tv1, struct timeval *tv2)
203{
204 return (tv2->tv_sec - tv1->tv_sec ) * EIO_TICKS
205 + ((tv2->tv_usec - tv1->tv_usec) >> 10);
206}
207
208static unsigned int started, idle, wanted = 4;
209
210static void (*want_poll_cb) (void);
211static void (*done_poll_cb) (void);
212
213static unsigned int max_poll_time; /* reslock */
214static unsigned int max_poll_reqs; /* reslock */
215
216static volatile unsigned int nreqs; /* reqlock */
217static volatile unsigned int nready; /* reqlock */
218static volatile unsigned int npending; /* reqlock */
219static volatile unsigned int max_idle = 4;
220
221static mutex_t wrklock = X_MUTEX_INIT;
222static mutex_t reslock = X_MUTEX_INIT;
223static mutex_t reqlock = X_MUTEX_INIT;
224static cond_t reqwait = X_COND_INIT;
225
226#if !HAVE_PREADWRITE
227/*
228 * make our pread/pwrite emulation safe against themselves, but not against
229 * normal read/write by using a mutex. slows down execution a lot,
230 * but that's your problem, not mine.
231 */
232static mutex_t preadwritelock = X_MUTEX_INIT;
233#endif
234
235typedef struct etp_worker
236{
237 /* locked by wrklock */
238 struct etp_worker *prev, *next;
239
240 thread_t tid;
241
242 /* locked by reslock, reqlock or wrklock */
243 ETP_REQ *req; /* currently processed request */
244
245 ETP_WORKER_COMMON
246} etp_worker;
247
248static etp_worker wrk_first = { &wrk_first, &wrk_first, 0 }; /* NOT etp */
249
250#define ETP_WORKER_LOCK(wrk) X_LOCK (wrklock)
251#define ETP_WORKER_UNLOCK(wrk) X_UNLOCK (wrklock)
252
253/* worker threads management */
254
255static void etp_worker_clear (etp_worker *wrk)
256{
257 ETP_WORKER_CLEAR (wrk);
258}
259
260static void etp_worker_free (etp_worker *wrk)
261{
262 wrk->next->prev = wrk->prev;
263 wrk->prev->next = wrk->next;
264
265 free (wrk);
266}
267
268static unsigned int etp_nreqs (void)
269{
270 int retval;
271 if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
272 retval = nreqs;
273 if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
274 return retval;
275}
276
277static unsigned int etp_nready (void)
278{
279 unsigned int retval;
280
281 if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
282 retval = nready;
283 if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
284
285 return retval;
286}
287
288static unsigned int etp_npending (void)
289{
290 unsigned int retval;
291
292 if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
293 retval = npending;
294 if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
295
296 return retval;
297}
298
299static unsigned int etp_nthreads (void)
300{
301 unsigned int retval;
302
303 if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
304 retval = started;
305 if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
306
307 return retval;
308}
309
310/*
311 * a somewhat faster data structure might be nice, but
312 * with 8 priorities this actually needs <20 insns
313 * per shift, the most expensive operation.
314 */
315typedef struct {
316 ETP_REQ *qs[ETP_NUM_PRI], *qe[ETP_NUM_PRI]; /* qstart, qend */
317 int size;
318} etp_reqq;
319
320static etp_reqq req_queue;
321static etp_reqq res_queue;
322
323static int reqq_push (etp_reqq *q, ETP_REQ *req)
324{
325 int pri = req->pri;
326 req->next = 0;
327
328 if (q->qe[pri])
329 {
330 q->qe[pri]->next = req;
331 q->qe[pri] = req;
332 }
333 else
334 q->qe[pri] = q->qs[pri] = req;
335
336 return q->size++;
337}
338
339static ETP_REQ *reqq_shift (etp_reqq *q)
340{
341 int pri;
342
343 if (!q->size)
344 return 0;
345
346 --q->size;
347
348 for (pri = ETP_NUM_PRI; pri--; )
349 {
350 eio_req *req = q->qs[pri];
351
352 if (req)
353 {
354 if (!(q->qs[pri] = (eio_req *)req->next))
355 q->qe[pri] = 0;
356
357 return req;
358 }
359 }
360
361 abort ();
362}
363
364static void etp_atfork_prepare (void)
365{
366 X_LOCK (wrklock);
367 X_LOCK (reqlock);
368 X_LOCK (reslock);
369#if !HAVE_PREADWRITE
370 X_LOCK (preadwritelock);
371#endif
372}
373
374static void etp_atfork_parent (void)
375{
376#if !HAVE_PREADWRITE
377 X_UNLOCK (preadwritelock);
378#endif
379 X_UNLOCK (reslock);
380 X_UNLOCK (reqlock);
381 X_UNLOCK (wrklock);
382}
383
384static void etp_atfork_child (void)
385{
386 ETP_REQ *prv;
387
388 while ((prv = reqq_shift (&req_queue)))
389 ETP_DESTROY (prv);
390
391 while ((prv = reqq_shift (&res_queue)))
392 ETP_DESTROY (prv);
393
394 while (wrk_first.next != &wrk_first)
395 {
396 etp_worker *wrk = wrk_first.next;
397
398 if (wrk->req)
399 ETP_DESTROY (wrk->req);
400
401 etp_worker_clear (wrk);
402 etp_worker_free (wrk);
403 }
404
405 started = 0;
406 idle = 0;
407 nreqs = 0;
408 nready = 0;
409 npending = 0;
410
411 etp_atfork_parent ();
412}
413
414static void 384static void
415etp_once_init (void)
416{
417 X_THREAD_ATFORK (etp_atfork_prepare, etp_atfork_parent, etp_atfork_child);
418}
419
420static int
421etp_init (void (*want_poll)(void), void (*done_poll)(void))
422{
423 static pthread_once_t doinit = PTHREAD_ONCE_INIT;
424
425 pthread_once (&doinit, etp_once_init);
426
427 want_poll_cb = want_poll;
428 done_poll_cb = done_poll;
429
430 return 0;
431}
432
433X_THREAD_PROC (etp_proc);
434
435static void etp_start_thread (void)
436{
437 etp_worker *wrk = calloc (1, sizeof (etp_worker));
438
439 /*TODO*/
440 assert (("unable to allocate worker thread data", wrk));
441
442 X_LOCK (wrklock);
443
444 if (thread_create (&wrk->tid, etp_proc, (void *)wrk))
445 {
446 wrk->prev = &wrk_first;
447 wrk->next = wrk_first.next;
448 wrk_first.next->prev = wrk;
449 wrk_first.next = wrk;
450 ++started;
451 }
452 else
453 free (wrk);
454
455 X_UNLOCK (wrklock);
456}
457
458static void etp_maybe_start_thread (void)
459{
460 if (expect_true (etp_nthreads () >= wanted))
461 return;
462
463 /* todo: maybe use idle here, but might be less exact */
464 if (expect_true (0 <= (int)etp_nthreads () + (int)etp_npending () - (int)etp_nreqs ()))
465 return;
466
467 etp_start_thread ();
468}
469
470static void etp_end_thread (void)
471{
472 eio_req *req = calloc (1, sizeof (eio_req));
473
474 req->type = -1;
475 req->pri = ETP_PRI_MAX - ETP_PRI_MIN;
476
477 X_LOCK (reqlock);
478 reqq_push (&req_queue, req);
479 X_COND_SIGNAL (reqwait);
480 X_UNLOCK (reqlock);
481
482 X_LOCK (wrklock);
483 --started;
484 X_UNLOCK (wrklock);
485}
486
487static int etp_poll (void)
488{
489 unsigned int maxreqs;
490 unsigned int maxtime;
491 struct timeval tv_start, tv_now;
492
493 X_LOCK (reslock);
494 maxreqs = max_poll_reqs;
495 maxtime = max_poll_time;
496 X_UNLOCK (reslock);
497
498 if (maxtime)
499 gettimeofday (&tv_start, 0);
500
501 for (;;)
502 {
503 ETP_REQ *req;
504
505 etp_maybe_start_thread ();
506
507 X_LOCK (reslock);
508 req = reqq_shift (&res_queue);
509
510 if (req)
511 {
512 --npending;
513
514 if (!res_queue.size && done_poll_cb)
515 done_poll_cb ();
516 }
517
518 X_UNLOCK (reslock);
519
520 if (!req)
521 return 0;
522
523 X_LOCK (reqlock);
524 --nreqs;
525 X_UNLOCK (reqlock);
526
527 if (expect_false (req->type == EIO_GROUP && req->size))
528 {
529 req->int1 = 1; /* mark request as delayed */
530 continue;
531 }
532 else
533 {
534 int res = ETP_FINISH (req);
535 if (expect_false (res))
536 return res;
537 }
538
539 if (expect_false (maxreqs && !--maxreqs))
540 break;
541
542 if (maxtime)
543 {
544 gettimeofday (&tv_now, 0);
545
546 if (tvdiff (&tv_start, &tv_now) >= maxtime)
547 break;
548 }
549 }
550
551 errno = EAGAIN;
552 return -1;
553}
554
555static void etp_cancel (ETP_REQ *req)
556{
557 X_LOCK (wrklock);
558 req->flags |= EIO_FLAG_CANCELLED;
559 X_UNLOCK (wrklock);
560
561 eio_grp_cancel (req);
562}
563
564static void etp_submit (ETP_REQ *req)
565{
566 req->pri -= ETP_PRI_MIN;
567
568 if (expect_false (req->pri < ETP_PRI_MIN - ETP_PRI_MIN)) req->pri = ETP_PRI_MIN - ETP_PRI_MIN;
569 if (expect_false (req->pri > ETP_PRI_MAX - ETP_PRI_MIN)) req->pri = ETP_PRI_MAX - ETP_PRI_MIN;
570
571 if (expect_false (req->type == EIO_GROUP))
572 {
573 /* I hope this is worth it :/ */
574 X_LOCK (reqlock);
575 ++nreqs;
576 X_UNLOCK (reqlock);
577
578 X_LOCK (reslock);
579
580 ++npending;
581
582 if (!reqq_push (&res_queue, req) && want_poll_cb)
583 want_poll_cb ();
584
585 X_UNLOCK (reslock);
586 }
587 else
588 {
589 X_LOCK (reqlock);
590 ++nreqs;
591 ++nready;
592 reqq_push (&req_queue, req);
593 X_COND_SIGNAL (reqwait);
594 X_UNLOCK (reqlock);
595
596 etp_maybe_start_thread ();
597 }
598}
599
600static void etp_set_max_poll_time (double nseconds)
601{
602 if (WORDACCESS_UNSAFE) X_LOCK (reslock);
603 max_poll_time = nseconds * EIO_TICKS;
604 if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);
605}
606
607static void etp_set_max_poll_reqs (unsigned int maxreqs)
608{
609 if (WORDACCESS_UNSAFE) X_LOCK (reslock);
610 max_poll_reqs = maxreqs;
611 if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);
612}
613
614static void etp_set_max_idle (unsigned int nthreads)
615{
616 if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
617 max_idle = nthreads <= 0 ? 1 : nthreads;
618 if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
619}
620
621static void etp_set_min_parallel (unsigned int nthreads)
622{
623 if (wanted < nthreads)
624 wanted = nthreads;
625}
626
627static void etp_set_max_parallel (unsigned int nthreads)
628{
629 if (wanted > nthreads)
630 wanted = nthreads;
631
632 while (started > wanted)
633 etp_end_thread ();
634}
635
636/*****************************************************************************/
637
638static void grp_try_feed (eio_req *grp) 385grp_try_feed (eio_req *grp)
639{ 386{
640 while (grp->size < grp->int2 && !EIO_CANCELLED (grp)) 387 while (grp->size < grp->int2 && !EIO_CANCELLED (grp))
641 { 388 {
642 grp->flags &= ~EIO_FLAG_GROUPADD; 389 grp->flags &= ~ETP_FLAG_GROUPADD;
643 390
644 EIO_FEED (grp); 391 EIO_FEED (grp);
645 392
646 /* stop if no progress has been made */ 393 /* stop if no progress has been made */
647 if (!(grp->flags & EIO_FLAG_GROUPADD)) 394 if (!(grp->flags & ETP_FLAG_GROUPADD))
648 { 395 {
649 grp->feed = 0; 396 grp->feed = 0;
650 break; 397 break;
651 } 398 }
652 } 399 }
653} 400}
654 401
402static int
655static int grp_dec (eio_req *grp) 403grp_dec (eio_req *grp)
656{ 404{
657 --grp->size; 405 --grp->size;
658 406
659 /* call feeder, if applicable */ 407 /* call feeder, if applicable */
660 grp_try_feed (grp); 408 grp_try_feed (grp);
661 409
662 /* finish, if done */ 410 /* finish, if done */
663 if (!grp->size && grp->int1) 411 if (!grp->size && grp->flags & ETP_FLAG_DELAYED)
664 return eio_finish (grp); 412 return eio_finish (grp);
665 else 413 else
666 return 0; 414 return 0;
667} 415}
668 416
417static void
669void eio_destroy (eio_req *req) 418eio_destroy (eio_req *req)
670{ 419{
671 if ((req)->flags & EIO_FLAG_PTR1_FREE) free (req->ptr1); 420 if ((req)->flags & EIO_FLAG_PTR1_FREE) free (req->ptr1);
672 if ((req)->flags & EIO_FLAG_PTR2_FREE) free (req->ptr2); 421 if ((req)->flags & EIO_FLAG_PTR2_FREE) free (req->ptr2);
673 422
674 EIO_DESTROY (req); 423 EIO_DESTROY (req);
675} 424}
676 425
426static int
677static int eio_finish (eio_req *req) 427eio_finish (eio_req *req)
678{ 428{
679 int res = EIO_FINISH (req); 429 int res = EIO_FINISH (req);
680 430
681 if (req->grp) 431 if (req->grp)
682 { 432 {
… …
690 if (grp->grp_first == req) 440 if (grp->grp_first == req)
691 grp->grp_first = req->grp_next; 441 grp->grp_first = req->grp_next;
692 442
693 res2 = grp_dec (grp); 443 res2 = grp_dec (grp);
694 444
695 if (!res && res2) 445 if (!res)
696 res = res2; 446 res = res2;
697 } 447 }
698 448
699 eio_destroy (req); 449 eio_destroy (req);
700 450
701 return res; 451 return res;
702} 452}
703 453
454void
704void eio_grp_cancel (eio_req *grp) 455eio_grp_cancel (eio_req *grp)
705{ 456{
706 for (grp = grp->grp_first; grp; grp = grp->grp_next)
707 eio_cancel (grp); 457 etp_grp_cancel (grp);
708} 458}
709 459
460void
710void eio_cancel (eio_req *req) 461eio_cancel (eio_req *req)
711{ 462{
712 etp_cancel (req); 463 etp_cancel (req);
713} 464}
714 465
466void
715void eio_submit (eio_req *req) 467eio_submit (eio_req *req)
716{ 468{
717 etp_submit (req); 469 etp_submit (req);
718} 470}
719 471
720unsigned int eio_nreqs (void) 472unsigned int
473eio_nreqs (void)
721{ 474{
722 return etp_nreqs (); 475 return etp_nreqs ();
723} 476}
724 477
725unsigned int eio_nready (void) 478unsigned int
479eio_nready (void)
726{ 480{
727 return etp_nready (); 481 return etp_nready ();
728} 482}
729 483
730unsigned int eio_npending (void) 484unsigned int
485eio_npending (void)
731{ 486{
732 return etp_npending (); 487 return etp_npending ();
733} 488}
734 489
735unsigned int eio_nthreads (void) 490unsigned int ecb_cold
491eio_nthreads (void)
736{ 492{
737 return etp_nthreads (); 493 return etp_nthreads ();
738} 494}
739 495
496void ecb_cold
740void eio_set_max_poll_time (double nseconds) 497eio_set_max_poll_time (double nseconds)
741{ 498{
742 etp_set_max_poll_time (nseconds); 499 etp_set_max_poll_time (nseconds);
743} 500}
744 501
502void ecb_cold
745void eio_set_max_poll_reqs (unsigned int maxreqs) 503eio_set_max_poll_reqs (unsigned int maxreqs)
746{ 504{
747 etp_set_max_poll_reqs (maxreqs); 505 etp_set_max_poll_reqs (maxreqs);
748} 506}
749 507
508void ecb_cold
750void eio_set_max_idle (unsigned int nthreads) 509eio_set_max_idle (unsigned int nthreads)
751{ 510{
752 etp_set_max_idle (nthreads); 511 etp_set_max_idle (nthreads);
753} 512}
754 513
514void ecb_cold
515eio_set_idle_timeout (unsigned int seconds)
516{
517 etp_set_idle_timeout (seconds);
518}
519
520void ecb_cold
755void eio_set_min_parallel (unsigned int nthreads) 521eio_set_min_parallel (unsigned int nthreads)
756{ 522{
757 etp_set_min_parallel (nthreads); 523 etp_set_min_parallel (nthreads);
758} 524}
759 525
526void ecb_cold
760void eio_set_max_parallel (unsigned int nthreads) 527eio_set_max_parallel (unsigned int nthreads)
761{ 528{
762 etp_set_max_parallel (nthreads); 529 etp_set_max_parallel (nthreads);
763} 530}
764 531
765int eio_poll (void) 532int eio_poll (void)
… …
768} 535}
769 536
770/*****************************************************************************/ 537/*****************************************************************************/
771/* work around various missing functions */ 538/* work around various missing functions */
772 539
773#if !HAVE_PREADWRITE
774# undef pread
775# undef pwrite
776# define pread eio__pread
777# define pwrite eio__pwrite
778
779static ssize_t
780eio__pread (int fd, void *buf, size_t count, off_t offset)
781{
782 ssize_t res;
783 off_t ooffset;
784
785 X_LOCK (preadwritelock);
786 ooffset = lseek (fd, 0, SEEK_CUR);
787 lseek (fd, offset, SEEK_SET);
788 res = read (fd, buf, count);
789 lseek (fd, ooffset, SEEK_SET);
790 X_UNLOCK (preadwritelock);
791
792 return res;
793}
794
795static ssize_t
796eio__pwrite (int fd, void *buf, size_t count, off_t offset)
797{
798 ssize_t res;
799 off_t ooffset;
800
801 X_LOCK (preadwritelock);
802 ooffset = lseek (fd, 0, SEEK_CUR);
803 lseek (fd, offset, SEEK_SET);
804 res = write (fd, buf, count);
805 lseek (fd, ooffset, SEEK_SET);
806 X_UNLOCK (preadwritelock);
807
808 return res;
809}
810#endif
811
812#ifndef HAVE_FUTIMES 540#ifndef HAVE_UTIMES
813 541
814# undef utimes 542# undef utimes
815# undef futimes
816# define utimes(path,times) eio__utimes (path, times) 543# define utimes(path,times) eio__utimes (path, times)
817# define futimes(fd,times) eio__futimes (fd, times)
818 544
819static int 545static int
820eio__utimes (const char *filename, const struct timeval times[2]) 546eio__utimes (const char *filename, const struct timeval times[2])
821{ 547{
822 if (times) 548 if (times)
… …
830 } 556 }
831 else 557 else
832 return utime (filename, 0); 558 return utime (filename, 0);
833} 559}
834 560
561#endif
562
563#ifndef HAVE_FUTIMES
564
565# undef futimes
566# define futimes(fd,times) eio__futimes (fd, times)
567
568static int
835static int eio__futimes (int fd, const struct timeval tv[2]) 569eio__futimes (int fd, const struct timeval tv[2])
836{ 570{
837 errno = ENOSYS; 571 errno = ENOSYS;
838 return -1; 572 return -1;
839} 573}
840 574
… …
843#if !HAVE_FDATASYNC 577#if !HAVE_FDATASYNC
844# undef fdatasync 578# undef fdatasync
845# define fdatasync(fd) fsync (fd) 579# define fdatasync(fd) fsync (fd)
846#endif 580#endif
847 581
582static int
583eio__syncfs (int fd)
584{
585 int res;
586
587#if HAVE_SYS_SYNCFS
588 res = (int)syscall (__NR_syncfs, (int)(fd));
589#else
590 res = EIO_ENOSYS ();
591#endif
592
593 if (res < 0 && errno == ENOSYS && fd >= 0)
594 sync ();
595
596 return res;
597}
598
848/* sync_file_range always needs emulation */ 599/* sync_file_range always needs emulation */
849int 600static int
850eio__sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags) 601eio__sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags)
851{ 602{
852#if HAVE_SYNC_FILE_RANGE 603#if HAVE_SYNC_FILE_RANGE
853 int res; 604 int res;
854 605
… …
871 /* even though we could play tricks with the flags, it's better to always 622 /* even though we could play tricks with the flags, it's better to always
872 * call fdatasync, as that matches the expectation of its users best */ 623 * call fdatasync, as that matches the expectation of its users best */
873 return fdatasync (fd); 624 return fdatasync (fd);
874} 625}
875 626
627static int
628eio__fallocate (int fd, int mode, off_t offset, size_t len)
629{
630#if HAVE_LINUX_FALLOCATE
631 return fallocate (fd, mode, offset, len);
632#else
633 return EIO_ENOSYS ();
634#endif
635}
636
876#if !HAVE_READAHEAD 637#if !HAVE_READAHEAD
877# undef readahead 638# undef readahead
878# define readahead(fd,offset,count) eio__readahead (fd, offset, count, self) 639# define readahead(fd,offset,count) eio__readahead (fd, offset, count, self)
879 640
880static ssize_t 641static eio_ssize_t
881eio__readahead (int fd, off_t offset, size_t count, etp_worker *self) 642eio__readahead (int fd, off_t offset, size_t count, etp_worker *self)
882{ 643{
883 size_t todo = count; 644 size_t todo = count;
884 dBUF; 645 dBUF;
885 646
… …
890 pread (fd, eio_buf, len, offset); 651 pread (fd, eio_buf, len, offset);
891 offset += len; 652 offset += len;
892 todo -= len; 653 todo -= len;
893 } 654 }
894 655
895 errno = 0; 656 FUBd;
657
658 /* linux's readahead basically only fails for EBADF or EINVAL (not mmappable) */
659 /* but not for e.g. EIO or eof, so we also never fail */
896 return count; 660 return 0;
897} 661}
898 662
899#endif 663#endif
900 664
901/* sendfile always needs emulation */ 665/* sendfile always needs emulation */
902static ssize_t 666static eio_ssize_t
903eio__sendfile (int ofd, int ifd, off_t offset, size_t count, etp_worker *self) 667eio__sendfile (int ofd, int ifd, off_t offset, size_t count)
904{ 668{
669 eio_ssize_t written = 0;
905 ssize_t res; 670 eio_ssize_t res;
906 671
907 if (!count) 672 if (!count)
908 return 0; 673 return 0;
909 674
675 for (;;)
676 {
677#ifdef __APPLE__
678# undef HAVE_SENDFILE /* broken, as everything on os x */
679#endif
910#if HAVE_SENDFILE 680#if HAVE_SENDFILE
911# if __linux 681# if __linux
682 off_t soffset = offset;
912 res = sendfile (ofd, ifd, &offset, count); 683 res = sendfile (ofd, ifd, &soffset, count);
913 684
914# elif __freebsd 685# elif __FreeBSD__
915 /* 686 /*
916 * Of course, the freebsd sendfile is a dire hack with no thoughts 687 * Of course, the freebsd sendfile is a dire hack with no thoughts
917 * wasted on making it similar to other I/O functions. 688 * wasted on making it similar to other I/O functions.
918 */ 689 */
919 {
920 off_t sbytes; 690 off_t sbytes;
921 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0); 691 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
922 692
923 if (res < 0 && sbytes) 693 #if 0 /* according to the manpage, this is correct, but broken behaviour */
924 /* maybe only on EAGAIN: as usual, the manpage leaves you guessing */ 694 /* freebsd' sendfile will return 0 on success */
695 /* freebsd 8 documents it as only setting *sbytes on EINTR and EAGAIN, but */
696 /* not on e.g. EIO or EPIPE - sounds broken */
697 if ((res < 0 && (errno == EAGAIN || errno == EINTR) && sbytes) || res == 0)
925 res = sbytes; 698 res = sbytes;
926 } 699 #endif
927 700
701 /* according to source inspection, this is correct, and useful behaviour */
702 if (sbytes)
703 res = sbytes;
704
928# elif defined (__APPLE__) 705# elif defined __APPLE__
929
930 {
931 off_t sbytes = count; 706 off_t sbytes = count;
932 res = sendfile (ifd, ofd, offset, &sbytes, 0, 0); 707 res = sendfile (ifd, ofd, offset, &sbytes, 0, 0);
933 708
934 if (res < 0 && errno == EAGAIN && sbytes) 709 /* according to the manpage, sbytes is always valid */
710 if (sbytes)
935 res = sbytes; 711 res = sbytes;
936 }
937 712
938# elif __hpux 713# elif __hpux
939 res = sendfile (ofd, ifd, offset, count, 0, 0); 714 res = sendfile (ofd, ifd, offset, count, 0, 0);
940 715
941# elif __solaris 716# elif __solaris
942 {
943 struct sendfilevec vec; 717 struct sendfilevec vec;
944 size_t sbytes; 718 size_t sbytes;
945 719
946 vec.sfv_fd = ifd; 720 vec.sfv_fd = ifd;
947 vec.sfv_flag = 0; 721 vec.sfv_flag = 0;
948 vec.sfv_off = offset; 722 vec.sfv_off = offset;
949 vec.sfv_len = count; 723 vec.sfv_len = count;
950 724
951 res = sendfilev (ofd, &vec, 1, &sbytes); 725 res = sendfilev (ofd, &vec, 1, &sbytes);
952 726
953 if (res < 0 && sbytes) 727 if (res < 0 && sbytes)
954 res = sbytes; 728 res = sbytes;
955 }
956 729
957# endif 730# endif
958 731
959#elif defined (_WIN32) 732#elif defined (_WIN32) && 0
960
961 /* does not work, just for documentation of what would need to be done */ 733 /* does not work, just for documentation of what would need to be done */
962 { 734 /* actually, cannot be done like this, as TransmitFile changes the file offset, */
735 /* libeio guarantees that the file offset does not change, and windows */
736 /* has no way to get an independent handle to the same file description */
963 HANDLE h = TO_SOCKET (ifd); 737 HANDLE h = TO_SOCKET (ifd);
964 SetFilePointer (h, offset, 0, FILE_BEGIN); 738 SetFilePointer (h, offset, 0, FILE_BEGIN);
965 res = TransmitFile (TO_SOCKET (ofd), h, count, 0, 0, 0, 0); 739 res = TransmitFile (TO_SOCKET (ofd), h, count, 0, 0, 0, 0);
966 }
967 740
968#else 741#else
969 res = -1; 742 res = EIO_ENOSYS ();
970 errno = ENOSYS;
971#endif 743#endif
972 744
745 /* we assume sendfile can copy at least 128mb in one go */
746 if (res <= 128 * 1024 * 1024)
747 {
748 if (res > 0)
749 written += res;
750
751 if (written)
752 return written;
753
754 break;
755 }
756 else
757 {
758 /* if we requested more, then probably the kernel was lazy */
759 written += res;
760 offset += res;
761 count -= res;
762
763 if (!count)
764 return written;
765 }
766 }
767
973 if (res < 0 768 if (res < 0
974 && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK 769 && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
975 /* BSDs */ 770 /* BSDs */
976#ifdef ENOTSUP /* sigh, if the steenking pile called openbsd would only try to at least compile posix code... */ 771#ifdef ENOTSUP /* sigh, if the steenking pile called openbsd would only try to at least compile posix code... */
977 || errno == ENOTSUP 772 || errno == ENOTSUP
978#endif 773#endif
774#ifdef EOPNOTSUPP /* windows */
979 || errno == EOPNOTSUPP /* BSDs */ 775 || errno == EOPNOTSUPP /* BSDs */
776#endif
980#if __solaris 777#if __solaris
981 || errno == EAFNOSUPPORT || errno == EPROTOTYPE 778 || errno == EAFNOSUPPORT || errno == EPROTOTYPE
982#endif 779#endif
983 ) 780 )
984 ) 781 )
… …
988 785
989 res = 0; 786 res = 0;
990 787
991 while (count) 788 while (count)
992 { 789 {
993 ssize_t cnt; 790 eio_ssize_t cnt;
994 791
995 cnt = pread (ifd, eio_buf, count > EIO_BUFSIZE ? EIO_BUFSIZE : count, offset); 792 cnt = pread (ifd, eio_buf, count > EIO_BUFSIZE ? EIO_BUFSIZE : count, offset);
996 793
997 if (cnt <= 0) 794 if (cnt <= 0)
998 { 795 {
… …
1010 807
1011 offset += cnt; 808 offset += cnt;
1012 res += cnt; 809 res += cnt;
1013 count -= cnt; 810 count -= cnt;
1014 } 811 }
812
813 FUBd;
1015 } 814 }
1016 815
1017 return res; 816 return res;
817}
818
819#ifdef PAGESIZE
820# define eio_pagesize() PAGESIZE
821#else
822static intptr_t
823eio_pagesize (void)
824{
825 static intptr_t page;
826
827 if (!page)
828 page = sysconf (_SC_PAGESIZE);
829
830 return page;
831}
832#endif
833
834static void
835eio_page_align (void **addr, size_t *length)
836{
837 intptr_t mask = eio_pagesize () - 1;
838
839 /* round down addr */
840 intptr_t adj = mask & (intptr_t)*addr;
841
842 *addr = (void *)((intptr_t)*addr - adj);
843 *length += adj;
844
845 /* round up length */
846 *length = (*length + mask) & ~mask;
847}
848
849#if !_POSIX_MEMLOCK
850# define eio__mlockall(a) EIO_ENOSYS ()
851#else
852
853static int
854eio__mlockall (int flags)
855{
856 #if __GLIBC__ == 2 && __GLIBC_MINOR__ <= 7
857 extern int mallopt (int, int);
858 mallopt (-6, 238); /* http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=473812 */
859 #endif
860
861 if (EIO_MCL_CURRENT != MCL_CURRENT
862 || EIO_MCL_FUTURE != MCL_FUTURE)
863 {
864 flags = 0
865 | (flags & EIO_MCL_CURRENT ? MCL_CURRENT : 0)
866 | (flags & EIO_MCL_FUTURE ? MCL_FUTURE : 0);
867 }
868
869 return mlockall (flags);
870}
871#endif
872
873#if !_POSIX_MEMLOCK_RANGE
874# define eio__mlock(a,b) EIO_ENOSYS ()
875#else
876
877static int
878eio__mlock (void *addr, size_t length)
879{
880 eio_page_align (&addr, &length);
881
882 return mlock (addr, length);
883}
884
885#endif
886
887#if !(_POSIX_MAPPED_FILES && _POSIX_SYNCHRONIZED_IO)
888# define eio__msync(a,b,c) EIO_ENOSYS ()
889#else
890
891static int
892eio__msync (void *mem, size_t len, int flags)
893{
894 eio_page_align (&mem, &len);
895
896 if (EIO_MS_ASYNC != MS_SYNC
897 || EIO_MS_INVALIDATE != MS_INVALIDATE
898 || EIO_MS_SYNC != MS_SYNC)
899 {
900 flags = 0
901 | (flags & EIO_MS_ASYNC ? MS_ASYNC : 0)
902 | (flags & EIO_MS_INVALIDATE ? MS_INVALIDATE : 0)
903 | (flags & EIO_MS_SYNC ? MS_SYNC : 0);
904 }
905
906 return msync (mem, len, flags);
907}
908
909#endif
910
911static int
912eio__mtouch (eio_req *req)
913{
914 void *mem = req->ptr2;
915 size_t len = req->size;
916 int flags = req->int1;
917
918 eio_page_align (&mem, &len);
919
920 {
921 intptr_t addr = (intptr_t)mem;
922 intptr_t end = addr + len;
923 intptr_t page = eio_pagesize ();
924
925 if (addr < end)
926 if (flags & EIO_MT_MODIFY) /* modify */
927 do { *((volatile sig_atomic_t *)addr) |= 0; } while ((addr += page) < len && !EIO_CANCELLED (req));
928 else
929 do { *((volatile sig_atomic_t *)addr) ; } while ((addr += page) < len && !EIO_CANCELLED (req));
930 }
931
932 return 0;
933}
934
935/*****************************************************************************/
936/* requests implemented outside eio_execute, because they are so large */
937
938static void
939eio__lseek (eio_req *req)
940{
941 /* this usually gets optimised away completely, or your compiler sucks, */
942 /* or the whence constants really are not 0, 1, 2 */
943 int whence = req->int2 == EIO_SEEK_SET ? SEEK_SET
944 : req->int2 == EIO_SEEK_CUR ? SEEK_CUR
945 : req->int2 == EIO_SEEK_END ? SEEK_END
946 : req->int2;
947
948 req->offs = lseek (req->int1, req->offs, whence);
949 req->result = req->offs == (off_t)-1 ? -1 : 0;
950}
951
952/* result will always end up in tmpbuf, there is always space for adding a 0-byte */
953static int
954eio__realpath (struct etp_tmpbuf *tmpbuf, eio_wd wd, const char *path)
955{
956 char *res;
957 const char *rel = path;
958 char *tmp1, *tmp2;
959#if SYMLOOP_MAX > 32
960 int symlinks = SYMLOOP_MAX;
961#else
962 int symlinks = 32;
963#endif
964
965 errno = EINVAL;
966 if (!rel)
967 return -1;
968
969 errno = ENOENT;
970 if (!*rel)
971 return -1;
972
973 res = etp_tmpbuf_get (tmpbuf, PATH_MAX * 3);
974#ifdef _WIN32
975 if (_access (rel, 4) != 0)
976 return -1;
977
978 symlinks = GetFullPathName (rel, PATH_MAX * 3, res, 0);
979
980 errno = ENAMETOOLONG;
981 if (symlinks >= PATH_MAX * 3)
982 return -1;
983
984 errno = EIO;
985 if (symlinks <= 0)
986 return -1;
987
988 return symlinks;
989
990#else
991 tmp1 = res + PATH_MAX;
992 tmp2 = tmp1 + PATH_MAX;
993
994#if 0 /* disabled, the musl way to do things is just too racy */
995#if __linux && defined(O_NONBLOCK) && defined(O_NOATIME)
996 /* on linux we may be able to ask the kernel */
997 {
998 int fd = open (rel, O_RDONLY | O_NONBLOCK | O_NOCTTY | O_NOATIME);
999
1000 if (fd >= 0)
1001 {
1002 sprintf (tmp1, "/proc/self/fd/%d", fd);
1003 req->result = readlink (tmp1, res, PATH_MAX);
1004 /* here we should probably stat the open file and the disk file, to make sure they still match */
1005 close (fd);
1006
1007 if (req->result > 0)
1008 goto done;
1009 }
1010 else if (errno == ELOOP || errno == ENAMETOOLONG || errno == ENOENT || errno == ENOTDIR || errno == EIO)
1011 return -1;
1012 }
1013#endif
1014#endif
1015
1016 if (*rel != '/')
1017 {
1018 int len;
1019
1020 errno = ENOENT;
1021 if (wd == EIO_INVALID_WD)
1022 return -1;
1023
1024 if (wd == EIO_CWD)
1025 {
1026 if (!getcwd (res, PATH_MAX))
1027 return -1;
1028
1029 len = strlen (res);
1030 }
1031 else
1032 memcpy (res, wd->str, len = wd->len);
1033
1034 if (res [1]) /* only use if not / */
1035 res += len;
1036 }
1037
1038 while (*rel)
1039 {
1040 eio_ssize_t len, linklen;
1041 const char *beg = rel;
1042
1043 while (*rel && *rel != '/')
1044 ++rel;
1045
1046 len = rel - beg;
1047
1048 if (!len) /* skip slashes */
1049 {
1050 ++rel;
1051 continue;
1052 }
1053
1054 if (beg [0] == '.')
1055 {
1056 if (len == 1)
1057 continue; /* . - nop */
1058
1059 if (beg [1] == '.' && len == 2)
1060 {
1061 /* .. - back up one component, if possible */
1062
1063 while (res != tmpbuf->ptr)
1064 if (*--res == '/')
1065 break;
1066
1067 continue;
1068 }
1069 }
1070
1071 errno = ENAMETOOLONG;
1072 if (res + 1 + len + 1 >= tmp1)
1073 return -1;
1074
1075 /* copy one component */
1076 *res = '/';
1077 memcpy (res + 1, beg, len);
1078
1079 /* zero-terminate, for readlink */
1080 res [len + 1] = 0;
1081
1082 /* now check if it's a symlink */
1083 linklen = readlink (tmpbuf->ptr, tmp1, PATH_MAX);
1084
1085 if (linklen < 0)
1086 {
1087 if (errno != EINVAL)
1088 return -1;
1089
1090 /* it's a normal directory. hopefully */
1091 res += len + 1;
1092 }
1093 else
1094 {
1095 /* yay, it was a symlink - build new path in tmp2 */
1096 int rellen = strlen (rel);
1097
1098 errno = ENAMETOOLONG;
1099 if (linklen + 1 + rellen >= PATH_MAX)
1100 return -1;
1101
1102 errno = ELOOP;
1103 if (!--symlinks)
1104 return -1;
1105
1106 if (*tmp1 == '/')
1107 res = tmpbuf->ptr; /* symlink resolves to an absolute path */
1108
1109 /* we need to be careful, as rel might point into tmp2 already */
1110 memmove (tmp2 + linklen + 1, rel, rellen + 1);
1111 tmp2 [linklen] = '/';
1112 memcpy (tmp2, tmp1, linklen);
1113
1114 rel = tmp2;
1115 }
1116 }
1117
1118 /* special case for the lone root path */
1119 if (res == tmpbuf->ptr)
1120 *res++ = '/';
1121
1122 return res - (char *)tmpbuf->ptr;
1123#endif
1018} 1124}
1019 1125
1020static signed char 1126static signed char
1021eio_dent_cmp (const eio_dirent *a, const eio_dirent *b) 1127eio_dent_cmp (const eio_dirent *a, const eio_dirent *b)
1022{ 1128{
1023 return a->score - b->score ? a->score - b->score /* works because our signed char is always 0..100 */ 1129 return a->score - b->score ? a->score - b->score /* works because our signed char is always 0..100 */
1024 : a->inode < b->inode ? -1 : a->inode > b->inode ? 1 : 0; 1130 : a->inode < b->inode ? -1
1131 : a->inode > b->inode ? 1
1132 : 0;
1025} 1133}
1026 1134
1027#define EIO_DENT_CMP(i,op,j) eio_dent_cmp (&i, &j) op 0 1135#define EIO_DENT_CMP(i,op,j) eio_dent_cmp (&i, &j) op 0
1028 1136
1029#define EIO_SORT_CUTOFF 30 /* quite high, but performs well on many filesystems */ 1137#define EIO_SORT_CUTOFF 30 /* quite high, but performs well on many filesystems */
1030#define EIO_SORT_FAST 60 /* when to only use insertion sort */ 1138#define EIO_SORT_FAST 60 /* when to only use insertion sort */
1031 1139
1032static void 1140static void
1033eio_dent_radix_sort (eio_dirent *dents, int size, signed char score_bits, ino_t inode_bits) 1141eio_dent_radix_sort (eio_dirent *dents, int size, signed char score_bits, eio_ino_t inode_bits)
1034{ 1142{
1035 unsigned char bits [9 + sizeof (ino_t) * 8]; 1143 unsigned char bits [9 + sizeof (eio_ino_t) * 8];
1036 unsigned char *bit = bits; 1144 unsigned char *bit = bits;
1037 1145
1038 assert (CHAR_BIT == 8); 1146 assert (CHAR_BIT == 8);
1039 assert (sizeof (eio_dirent) * 8 < 256); 1147 assert (sizeof (eio_dirent) * 8 < 256);
1040 assert (offsetof (eio_dirent, inode)); /* we use 0 as sentinel */ 1148 assert (offsetof (eio_dirent, inode)); /* we use bit #0 as sentinel */
1041 assert (offsetof (eio_dirent, score)); /* we use 0 as sentinel */ 1149 assert (offsetof (eio_dirent, score)); /* we use bit #0 as sentinel */
1042 1150
1043 if (size <= EIO_SORT_FAST) 1151 if (size <= EIO_SORT_FAST)
1044 return; 1152 return;
1045 1153
1046 /* first prepare an array of bits to test in our radix sort */ 1154 /* first prepare an array of bits to test in our radix sort */
1047 /* try to take endianness into account, as well as differences in ino_t sizes */ 1155 /* try to take endianness into account, as well as differences in eio_ino_t sizes */
1048 /* inode_bits must contain all inodes ORed together */ 1156 /* inode_bits must contain all inodes ORed together */
1049 /* which is used to skip bits that are 0 everywhere, which is very common */ 1157 /* which is used to skip bits that are 0 everywhere, which is very common */
1050 { 1158 {
1051 ino_t endianness; 1159 eio_ino_t endianness;
1052 int i, j; 1160 int i, j;
1053 1161
1054 /* we store the byte offset of byte n into byte n of "endianness" */ 1162 /* we store the byte offset of byte n into byte n of "endianness" */
1055 for (i = 0; i < sizeof (ino_t); ++i) 1163 for (i = 0; i < sizeof (eio_ino_t); ++i)
1056 ((unsigned char *)&endianness)[i] = i; 1164 ((unsigned char *)&endianness)[i] = i;
1057 1165
1058 *bit++ = 0; 1166 *bit++ = 0;
1059 1167
1060 for (i = 0; i < sizeof (ino_t); ++i) 1168 for (i = 0; i < sizeof (eio_ino_t); ++i)
1061 { 1169 {
1062 /* shifting off the byte offsets out of "endianness" */ 1170 /* shifting off the byte offsets out of "endianness" */
1063 int offs = (offsetof (eio_dirent, inode) + (endianness & 0xff)) * 8; 1171 int offs = (offsetof (eio_dirent, inode) + (endianness & 0xff)) * 8;
1064 endianness >>= 8; 1172 endianness >>= 8;
1065 1173
1066 for (j = 0; j < 8; ++j) 1174 for (j = 0; j < 8; ++j)
1067 if (inode_bits & (((ino_t)1) << (i * 8 + j))) 1175 if (inode_bits & (((eio_ino_t)1) << (i * 8 + j)))
1068 *bit++ = offs + j; 1176 *bit++ = offs + j;
1069 } 1177 }
1070 1178
1071 for (j = 0; j < 8; ++j) 1179 for (j = 0; j < 8; ++j)
1072 if (score_bits & (1 << j)) 1180 if (score_bits & (1 << j))
1073 *bit++ = offsetof (eio_dirent, score) * 8 + j; 1181 *bit++ = offsetof (eio_dirent, score) * 8 + j;
1074 } 1182 }
1075 1183
1076 /* now actually do the sorting (a variant of MSD radix sort) */ 1184 /* now actually do the sorting (a variant of MSD radix sort) */
1077 { 1185 {
1078 eio_dirent *base_stk [9 + sizeof (ino_t) * 8], *base; 1186 eio_dirent *base_stk [9 + sizeof (eio_ino_t) * 8], *base;
1079 eio_dirent *end_stk [9 + sizeof (ino_t) * 8], *end; 1187 eio_dirent *end_stk [9 + sizeof (eio_ino_t) * 8], *end;
1080 unsigned char *bit_stk [9 + sizeof (ino_t) * 8]; 1188 unsigned char *bit_stk [9 + sizeof (eio_ino_t) * 8];
1081 int stk_idx = 0; 1189 int stk_idx = 0;
1082 1190
1083 base_stk [stk_idx] = dents; 1191 base_stk [stk_idx] = dents;
1084 end_stk [stk_idx] = dents + size; 1192 end_stk [stk_idx] = dents + size;
1085 bit_stk [stk_idx] = bit - 1; 1193 bit_stk [stk_idx] = bit - 1;
… …
1164 } 1272 }
1165 } 1273 }
1166} 1274}
1167 1275
1168static void 1276static void
1169eio_dent_sort (eio_dirent *dents, int size, signed char score_bits, ino_t inode_bits) 1277eio_dent_sort (eio_dirent *dents, int size, signed char score_bits, eio_ino_t inode_bits)
1170{ 1278{
1171 if (size <= 1) 1279 if (size <= 1)
1172 return; /* our insertion sort relies on size > 0 */ 1280 return; /* our insertion sort relies on size > 0 */
1173 1281
1174 /* first we use a radix sort, but only for dirs >= EIO_SORT_FAST */ 1282 /* first we use a radix sort, but only for dirs >= EIO_SORT_FAST */
… …
1182 1290
1183/* read a full directory */ 1291/* read a full directory */
1184static void 1292static void
1185eio__scandir (eio_req *req, etp_worker *self) 1293eio__scandir (eio_req *req, etp_worker *self)
1186{ 1294{
1187 DIR *dirp;
1188 EIO_STRUCT_DIRENT *entp;
1189 char *name, *names; 1295 char *name, *names;
1190 int namesalloc = 4096; 1296 int namesalloc = 4096 - sizeof (void *) * 4;
1191 int namesoffs = 0; 1297 int namesoffs = 0;
1192 int flags = req->int1; 1298 int flags = req->int1;
1193 eio_dirent *dents = 0; 1299 eio_dirent *dents = 0;
1194 int dentalloc = 128; 1300 int dentalloc = 128;
1195 int dentoffs = 0; 1301 int dentoffs = 0;
1196 ino_t inode_bits = 0; 1302 eio_ino_t inode_bits = 0;
1303#ifdef _WIN32
1304 HANDLE dirp;
1305 WIN32_FIND_DATA entp;
1306#else
1307 DIR *dirp;
1308 EIO_STRUCT_DIRENT *entp;
1309#endif
1197 1310
1198 req->result = -1; 1311 req->result = -1;
1199 1312
1200 if (!(flags & EIO_READDIR_DENTS)) 1313 if (!(flags & EIO_READDIR_DENTS))
1201 flags &= ~(EIO_READDIR_DIRS_FIRST | EIO_READDIR_STAT_ORDER); 1314 flags &= ~(EIO_READDIR_DIRS_FIRST | EIO_READDIR_STAT_ORDER);
1202 1315
1203 X_LOCK (wrklock); 1316#ifdef _WIN32
1204 /* the corresponding closedir is in ETP_WORKER_CLEAR */ 1317 {
1318 int len = strlen ((const char *)req->ptr1);
1319 char *path = malloc (MAX_PATH);
1320 const char *fmt;
1321 const char *reqpath = wd_expand (&self->tmpbuf, req->wd, req->ptr1);
1322
1323 if (!len)
1324 fmt = "./*";
1325 else if (reqpath[len - 1] == '/' || reqpath[len - 1] == '\\')
1326 fmt = "%s*";
1327 else
1328 fmt = "%s/*";
1329
1330 _snprintf (path, MAX_PATH, fmt, reqpath);
1331 dirp = FindFirstFile (path, &entp);
1332 free (path);
1333
1334 if (dirp == INVALID_HANDLE_VALUE)
1335 {
1336 /* should steal _dosmaperr */
1337 switch (GetLastError ())
1338 {
1339 case ERROR_FILE_NOT_FOUND:
1340 req->result = 0;
1341 break;
1342
1343 case ERROR_INVALID_NAME:
1344 case ERROR_PATH_NOT_FOUND:
1345 case ERROR_NO_MORE_FILES:
1346 errno = ENOENT;
1347 break;
1348
1349 case ERROR_NOT_ENOUGH_MEMORY:
1350 errno = ENOMEM;
1351 break;
1352
1353 default:
1354 errno = EINVAL;
1355 break;
1356 }
1357
1358 return;
1359 }
1360 }
1361#else
1362 #if HAVE_AT
1363 if (req->wd)
1364 {
1365 int fd = openat (WD2FD (req->wd), req->ptr1, O_CLOEXEC | O_SEARCH | O_DIRECTORY);
1366
1367 if (fd < 0)
1368 return;
1369
1370 dirp = fdopendir (fd);
1371
1372 if (!dirp)
1373 close (fd);
1374 }
1375 else
1205 self->dirp = dirp = opendir (req->ptr1); 1376 dirp = opendir (req->ptr1);
1377 #else
1378 dirp = opendir (wd_expand (&self->tmpbuf, req->wd, req->ptr1));
1379 #endif
1380
1381 if (!dirp)
1382 return;
1383#endif
1384
1385 if (req->flags & EIO_FLAG_PTR1_FREE)
1386 free (req->ptr1);
1387
1206 req->flags |= EIO_FLAG_PTR1_FREE | EIO_FLAG_PTR2_FREE; 1388 req->flags |= EIO_FLAG_PTR1_FREE | EIO_FLAG_PTR2_FREE;
1207 req->ptr1 = dents = flags ? malloc (dentalloc * sizeof (eio_dirent)) : 0; 1389 req->ptr1 = dents = flags ? malloc (dentalloc * sizeof (eio_dirent)) : 0;
1208 req->ptr2 = names = malloc (namesalloc); 1390 req->ptr2 = names = malloc (namesalloc);
1209 X_UNLOCK (wrklock);
1210 1391
1211 if (dirp && names && (!flags || dents)) 1392 if (!names || (flags && !dents))
1393 return;
1394
1212 for (;;) 1395 for (;;)
1213 { 1396 {
1397 int done;
1398
1399#ifdef _WIN32
1400 done = !dirp;
1401#else
1214 errno = 0; 1402 errno = 0;
1215 entp = readdir (dirp); 1403 entp = readdir (dirp);
1404 done = !entp;
1405#endif
1216 1406
1217 if (!entp) 1407 if (done)
1218 { 1408 {
1409#ifndef _WIN32
1410 int old_errno = errno;
1411 closedir (dirp);
1412 errno = old_errno;
1413
1219 if (errno) 1414 if (errno)
1220 break; 1415 break;
1416#endif
1221 1417
1222 /* sort etc. */ 1418 /* sort etc. */
1223 req->int1 = flags; 1419 req->int1 = flags;
1224 req->result = dentoffs; 1420 req->result = dentoffs;
1225 1421
1226 if (flags & EIO_READDIR_STAT_ORDER) 1422 if (flags & EIO_READDIR_STAT_ORDER)
1227 eio_dent_sort (dents, dentoffs, 0, inode_bits); /* sort by inode exclusively */ 1423 eio_dent_sort (dents, dentoffs, flags & EIO_READDIR_DIRS_FIRST ? 7 : 0, inode_bits);
1228 else if (flags & EIO_READDIR_DIRS_FIRST) 1424 else if (flags & EIO_READDIR_DIRS_FIRST)
1229 if (flags & EIO_READDIR_FOUND_UNKNOWN) 1425 if (flags & EIO_READDIR_FOUND_UNKNOWN)
1230 eio_dent_sort (dents, dentoffs, 7, inode_bits); /* sort by score and inode */ 1426 eio_dent_sort (dents, dentoffs, 7, inode_bits); /* sort by score and inode */
1231 else 1427 else
1428 {
1429 /* in this case, all is known, and we just put dirs first and sort them */
1430 eio_dirent *oth = dents + dentoffs;
1431 eio_dirent *dir = dents;
1432
1433 /* now partition dirs to the front, and non-dirs to the back */
1434 /* by walking from both sides and swapping if necessary */
1435 while (oth > dir)
1436 {
1437 if (dir->type == EIO_DT_DIR)
1438 ++dir;
1439 else if ((--oth)->type == EIO_DT_DIR)
1440 {
1441 eio_dirent tmp = *dir; *dir = *oth; *oth = tmp;
1442
1443 ++dir;
1444 }
1445 }
1446
1447 /* now sort the dirs only (dirs all have the same score) */
1448 eio_dent_sort (dents, dir - dents, 0, inode_bits);
1449 }
1450
1451 break;
1452 }
1453
1454 /* now add the entry to our list(s) */
1455 name = D_NAME (entp);
1456
1457 /* skip . and .. entries */
1458 if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1459 {
1460 int len = D_NAMLEN (entp) + 1;
1461
1462 while (ecb_expect_false (namesoffs + len > namesalloc))
1463 {
1464 namesalloc *= 2;
1465 req->ptr2 = names = realloc (names, namesalloc);
1466
1467 if (!names)
1468 break;
1469 }
1470
1471 memcpy (names + namesoffs, name, len);
1472
1473 if (dents)
1474 {
1475 struct eio_dirent *ent;
1476
1477 if (ecb_expect_false (dentoffs == dentalloc))
1232 { 1478 {
1233 /* in this case, all is known, and we just put dirs first and sort them */ 1479 dentalloc *= 2;
1480 req->ptr1 = dents = realloc (dents, dentalloc * sizeof (eio_dirent));
1481
1482 if (!dents)
1483 break;
1484 }
1485
1234 eio_dirent *oth = dents + dentoffs; 1486 ent = dents + dentoffs;
1235 eio_dirent *dir = dents;
1236 1487
1237 /* now partition dirs to the front, and non-dirs to the back */ 1488 ent->nameofs = namesoffs; /* rather dirtily we store the offset in the pointer */
1238 /* by walking from both sides and swapping if necessary */ 1489 ent->namelen = len - 1;
1239 /* also clear score, so it doesn't influence sorting */ 1490 ent->inode = D_INO (entp);
1240 while (oth > dir) 1491
1492 inode_bits |= ent->inode;
1493
1494 switch (D_TYPE (entp))
1495 {
1496 default:
1497 ent->type = EIO_DT_UNKNOWN;
1498 flags |= EIO_READDIR_FOUND_UNKNOWN;
1499 break;
1500
1501 #ifdef DT_FIFO
1502 case DT_FIFO: ent->type = EIO_DT_FIFO; break;
1503 #endif
1504 #ifdef DT_CHR
1505 case DT_CHR: ent->type = EIO_DT_CHR; break;
1506 #endif
1507 #ifdef DT_MPC
1508 case DT_MPC: ent->type = EIO_DT_MPC; break;
1509 #endif
1510 #ifdef DT_DIR
1511 case DT_DIR: ent->type = EIO_DT_DIR; break;
1512 #endif
1513 #ifdef DT_NAM
1514 case DT_NAM: ent->type = EIO_DT_NAM; break;
1515 #endif
1516 #ifdef DT_BLK
1517 case DT_BLK: ent->type = EIO_DT_BLK; break;
1518 #endif
1519 #ifdef DT_MPB
1520 case DT_MPB: ent->type = EIO_DT_MPB; break;
1521 #endif
1522 #ifdef DT_REG
1523 case DT_REG: ent->type = EIO_DT_REG; break;
1524 #endif
1525 #ifdef DT_NWK
1526 case DT_NWK: ent->type = EIO_DT_NWK; break;
1527 #endif
1528 #ifdef DT_CMP
1529 case DT_CMP: ent->type = EIO_DT_CMP; break;
1530 #endif
1531 #ifdef DT_LNK
1532 case DT_LNK: ent->type = EIO_DT_LNK; break;
1533 #endif
1534 #ifdef DT_SOCK
1535 case DT_SOCK: ent->type = EIO_DT_SOCK; break;
1536 #endif
1537 #ifdef DT_DOOR
1538 case DT_DOOR: ent->type = EIO_DT_DOOR; break;
1539 #endif
1540 #ifdef DT_WHT
1541 case DT_WHT: ent->type = EIO_DT_WHT; break;
1542 #endif
1543 }
1544
1545 ent->score = 7;
1546
1547 if (flags & EIO_READDIR_DIRS_FIRST)
1548 {
1549 if (ent->type == EIO_DT_UNKNOWN)
1241 { 1550 {
1242 if (dir->type == EIO_DT_DIR) 1551 if (*name == '.') /* leading dots are likely directories, and, in any case, rare */
1243 ++dir; 1552 ent->score = 1;
1244 else if ((--oth)->type == EIO_DT_DIR) 1553 else if (!strchr (name, '.')) /* absence of dots indicate likely dirs */
1245 { 1554 ent->score = len <= 2 ? 4 - len : len <= 4 ? 4 : len <= 7 ? 5 : 6; /* shorter == more likely dir, but avoid too many classes */
1246 eio_dirent tmp = *dir; *dir = *oth; *oth = tmp;
1247
1248 ++dir;
1249 }
1250 } 1555 }
1251 1556 else if (ent->type == EIO_DT_DIR)
1252 /* now sort the dirs only */ 1557 ent->score = 0;
1253 eio_dent_sort (dents, dir - dents, 0, inode_bits);
1254 } 1558 }
1255
1256 break;
1257 }
1258
1259 /* now add the entry to our list(s) */
1260 name = entp->d_name;
1261
1262 /* skip . and .. entries */
1263 if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1264 {
1265 int len = D_NAMLEN (entp) + 1;
1266
1267 while (expect_false (namesoffs + len > namesalloc))
1268 {
1269 namesalloc *= 2;
1270 X_LOCK (wrklock);
1271 req->ptr2 = names = realloc (names, namesalloc);
1272 X_UNLOCK (wrklock);
1273
1274 if (!names)
1275 break;
1276 } 1559 }
1277 1560
1278 memcpy (names + namesoffs, name, len);
1279
1280 if (dents)
1281 {
1282 struct eio_dirent *ent;
1283
1284 if (expect_false (dentoffs == dentalloc))
1285 {
1286 dentalloc *= 2;
1287 X_LOCK (wrklock);
1288 req->ptr1 = dents = realloc (dents, dentalloc * sizeof (eio_dirent));
1289 X_UNLOCK (wrklock);
1290
1291 if (!dents)
1292 break;
1293 }
1294
1295 ent = dents + dentoffs;
1296
1297 ent->nameofs = namesoffs; /* rather dirtily we store the offset in the pointer */
1298 ent->namelen = len - 1;
1299 ent->inode = D_INO (entp);
1300
1301 inode_bits |= ent->inode;
1302
1303 switch (D_TYPE (entp))
1304 {
1305 default:
1306 ent->type = EIO_DT_UNKNOWN;
1307 flags |= EIO_READDIR_FOUND_UNKNOWN;
1308 break;
1309
1310 #ifdef DT_FIFO
1311 case DT_FIFO: ent->type = EIO_DT_FIFO; break;
1312 #endif
1313 #ifdef DT_CHR
1314 case DT_CHR: ent->type = EIO_DT_CHR; break;
1315 #endif
1316 #ifdef DT_MPC
1317 case DT_MPC: ent->type = EIO_DT_MPC; break;
1318 #endif
1319 #ifdef DT_DIR
1320 case DT_DIR: ent->type = EIO_DT_DIR; break;
1321 #endif
1322 #ifdef DT_NAM
1323 case DT_NAM: ent->type = EIO_DT_NAM; break;
1324 #endif
1325 #ifdef DT_BLK
1326 case DT_BLK: ent->type = EIO_DT_BLK; break;
1327 #endif
1328 #ifdef DT_MPB
1329 case DT_MPB: ent->type = EIO_DT_MPB; break;
1330 #endif
1331 #ifdef DT_REG
1332 case DT_REG: ent->type = EIO_DT_REG; break;
1333 #endif
1334 #ifdef DT_NWK
1335 case DT_NWK: ent->type = EIO_DT_NWK; break;
1336 #endif
1337 #ifdef DT_CMP
1338 case DT_CMP: ent->type = EIO_DT_CMP; break;
1339 #endif
1340 #ifdef DT_LNK
1341 case DT_LNK: ent->type = EIO_DT_LNK; break;
1342 #endif
1343 #ifdef DT_SOCK
1344 case DT_SOCK: ent->type = EIO_DT_SOCK; break;
1345 #endif
1346 #ifdef DT_DOOR
1347 case DT_DOOR: ent->type = EIO_DT_DOOR; break;
1348 #endif
1349 #ifdef DT_WHT
1350 case DT_WHT: ent->type = EIO_DT_WHT; break;
1351 #endif
1352 }
1353
1354 ent->score = 7;
1355
1356 if (flags & EIO_READDIR_DIRS_FIRST)
1357 {
1358 if (ent->type == EIO_DT_UNKNOWN)
1359 {
1360 if (*name == '.') /* leading dots are likely directories, and, in any case, rare */
1361 ent->score = 1;
1362 else if (!strchr (name, '.')) /* absense of dots indicate likely dirs */
1363 ent->score = len <= 2 ? 4 - len : len <= 4 ? 4 : len <= 7 ? 5 : 6; /* shorter == more likely dir, but avoid too many classes */
1364 }
1365 else if (ent->type == EIO_DT_DIR)
1366 ent->score = 0;
1367 }
1368 }
1369
1370 namesoffs += len; 1561 namesoffs += len;
1371 ++dentoffs; 1562 ++dentoffs;
1372 } 1563 }
1373 1564
1374 if (EIO_CANCELLED (req)) 1565 if (EIO_CANCELLED (req))
1375 { 1566 {
1376 errno = ECANCELED; 1567 errno = ECANCELED;
1377 break; 1568 break;
1378 } 1569 }
1570
1571#ifdef _WIN32
1572 if (!FindNextFile (dirp, &entp))
1573 {
1574 FindClose (dirp);
1575 dirp = 0;
1379 } 1576 }
1577#endif
1578 }
1380} 1579}
1381 1580
1382#if !(_POSIX_MAPPED_FILES && _POSIX_SYNCHRONIZED_IO) 1581/*****************************************************************************/
1383# define eio__msync(a,b,c) ((errno = ENOSYS), -1) 1582/* working directory stuff */
1384#else 1583/* various deficiencies in the posix 2008 api force us to */
1584/* keep the absolute path in string form at all times */
1585/* fuck yeah. */
1385 1586
1386int 1587#if !HAVE_AT
1387eio__msync (void *mem, size_t len, int flags) 1588
1589/* a bit like realpath, but usually faster because it doesn'T have to return */
1590/* an absolute or canonical path */
1591static const char *
1592wd_expand (struct etp_tmpbuf *tmpbuf, eio_wd wd, const char *path)
1388{ 1593{
1389 if (EIO_MS_ASYNC != MS_SYNC 1594 if (!wd || *path == '/')
1390 || EIO_MS_INVALIDATE != MS_INVALIDATE 1595 return path;
1391 || EIO_MS_SYNC != MS_SYNC) 1596
1597 if (path [0] == '.' && !path [1])
1598 return wd->str;
1599
1600 {
1601 int l1 = wd->len;
1602 int l2 = strlen (path);
1603
1604 char *res = etp_tmpbuf_get (tmpbuf, l1 + l2 + 2);
1605
1606 memcpy (res, wd->str, l1);
1607 res [l1] = '/';
1608 memcpy (res + l1 + 1, path, l2 + 1);
1609
1610 return res;
1611 }
1612}
1613
1614#endif
1615
1616static eio_wd
1617eio__wd_open_sync (struct etp_tmpbuf *tmpbuf, eio_wd wd, const char *path)
1618{
1619 int fd;
1620 eio_wd res;
1621 int len = eio__realpath (tmpbuf, wd, path);
1622
1623 if (len < 0)
1624 return EIO_INVALID_WD;
1625
1626#if HAVE_AT
1627 fd = openat (WD2FD (wd), path, O_CLOEXEC | O_SEARCH | O_DIRECTORY);
1628
1629 if (fd < 0)
1630 return EIO_INVALID_WD;
1631#endif
1632
1633 res = malloc (sizeof (*res) + len); /* one extra 0-byte */
1634
1635#if HAVE_AT
1636 res->fd = fd;
1637#endif
1638
1639 res->len = len;
1640 memcpy (res->str, tmpbuf->ptr, len);
1641 res->str [len] = 0;
1642
1643 return res;
1644}
1645
1646eio_wd
1647eio_wd_open_sync (eio_wd wd, const char *path)
1648{
1649 struct etp_tmpbuf tmpbuf = { };
1650 wd = eio__wd_open_sync (&tmpbuf, wd, path);
1651 free (tmpbuf.ptr);
1652
1653 return wd;
1654}
1655
1656void
1657eio_wd_close_sync (eio_wd wd)
1658{
1659 if (wd != EIO_INVALID_WD && wd != EIO_CWD)
1392 { 1660 {
1393 flags = 0 1661 #if HAVE_AT
1394 | (flags & EIO_MS_ASYNC ? MS_ASYNC : 0) 1662 close (wd->fd);
1395 | (flags & EIO_MS_INVALIDATE ? MS_INVALIDATE : 0) 1663 #endif
1396 | (flags & EIO_MS_SYNC ? MS_SYNC : 0); 1664 free (wd);
1397 } 1665 }
1398
1399 return msync (mem, len, flags);
1400} 1666}
1401 1667
1402#endif 1668#if HAVE_AT
1403 1669
1404int 1670/* they forgot these */
1405eio__mtouch (void *mem, size_t len, int flags)
1406{
1407 intptr_t addr = (intptr_t)mem;
1408 intptr_t end = addr + len;
1409#ifdef PAGESIZE
1410 const intptr_t page = PAGESIZE;
1411#else
1412 static intptr_t page;
1413 1671
1414 if (!page) 1672static int
1415 page = sysconf (_SC_PAGESIZE); 1673eio__truncateat (int dirfd, const char *path, off_t length)
1416#endif 1674{
1675 int fd = openat (dirfd, path, O_WRONLY | O_CLOEXEC);
1676 int res;
1417 1677
1418 /* round down to start of page, although this is probably useless */ 1678 if (fd < 0)
1419 addr &= ~(page - 1); /* assume page size is always a power of two */ 1679 return fd;
1420 1680
1421 if (addr < end) 1681 res = ftruncate (fd, length);
1422 if (flags & EIO_MT_MODIFY) /* modify */ 1682 close (fd);
1423 do { *((volatile sig_atomic_t *)addr) |= 0; } while ((addr += page) < len);
1424 else
1425 do { *((volatile sig_atomic_t *)addr) ; } while ((addr += page) < len);
1426
1427 return 0; 1683 return res;
1428} 1684}
1685
1686static int
1687eio__statvfsat (int dirfd, const char *path, struct statvfs *buf)
1688{
1689 int fd = openat (dirfd, path, O_SEARCH | O_CLOEXEC);
1690 int res;
1691
1692 if (fd < 0)
1693 return fd;
1694
1695 res = fstatvfs (fd, buf);
1696 close (fd);
1697 return res;
1698
1699}
1700
1701#endif
1429 1702
1430/*****************************************************************************/ 1703/*****************************************************************************/
1431 1704
1432#define ALLOC(len) \ 1705#define ALLOC(len) \
1433 if (!req->ptr2) \ 1706 if (!req->ptr2) \
… …
1442 req->result = -1; \ 1715 req->result = -1; \
1443 break; \ 1716 break; \
1444 } \ 1717 } \
1445 } 1718 }
1446 1719
1447X_THREAD_PROC (etp_proc)
1448{
1449 ETP_REQ *req;
1450 struct timespec ts;
1451 etp_worker *self = (etp_worker *)thr_arg;
1452
1453 /* try to distribute timeouts somewhat randomly */
1454 ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL);
1455
1456 for (;;)
1457 {
1458 X_LOCK (reqlock);
1459
1460 for (;;)
1461 {
1462 self->req = req = reqq_shift (&req_queue);
1463
1464 if (req)
1465 break;
1466
1467 ++idle;
1468
1469 ts.tv_sec = time (0) + IDLE_TIMEOUT;
1470 if (X_COND_TIMEDWAIT (reqwait, reqlock, ts) == ETIMEDOUT)
1471 {
1472 if (idle > max_idle)
1473 {
1474 --idle;
1475 X_UNLOCK (reqlock);
1476 X_LOCK (wrklock);
1477 --started;
1478 X_UNLOCK (wrklock);
1479 goto quit;
1480 }
1481
1482 /* we are allowed to idle, so do so without any timeout */
1483 X_COND_WAIT (reqwait, reqlock);
1484 }
1485
1486 --idle;
1487 }
1488
1489 --nready;
1490
1491 X_UNLOCK (reqlock);
1492
1493 if (req->type < 0)
1494 goto quit;
1495
1496 if (!EIO_CANCELLED (req))
1497 ETP_EXECUTE (self, req);
1498
1499 X_LOCK (reslock);
1500
1501 ++npending;
1502
1503 if (!reqq_push (&res_queue, req) && want_poll_cb)
1504 want_poll_cb ();
1505
1506 self->req = 0;
1507 etp_worker_clear (self);
1508
1509 X_UNLOCK (reslock);
1510 }
1511
1512quit:
1513 X_LOCK (wrklock);
1514 etp_worker_free (self);
1515 X_UNLOCK (wrklock);
1516
1517 return 0;
1518}
1519
1520/*****************************************************************************/ 1720/*****************************************************************************/
1521 1721
1722int ecb_cold
1522int eio_init (void (*want_poll)(void), void (*done_poll)(void)) 1723eio_init (void (*want_poll)(void), void (*done_poll)(void))
1523{ 1724{
1524 return etp_init (want_poll, done_poll); 1725 return etp_init (want_poll, done_poll);
1525} 1726}
1526 1727
1728ecb_inline void
1527static void eio_api_destroy (eio_req *req) 1729eio_api_destroy (eio_req *req)
1528{ 1730{
1529 free (req); 1731 free (req);
1530} 1732}
1531 1733
1532#define REQ(rtype) \ 1734#define REQ(rtype) \
1533 eio_req *req; \ 1735 eio_req *req; \
1534 \ 1736 \
1535 req = (eio_req *)calloc (1, sizeof *req); \ 1737 req = (eio_req *)calloc (1, sizeof *req); \
1536 if (!req) \ 1738 if (!req) \
1537 return 0; \ 1739 return 0; \
… …
1551 { \ 1753 { \
1552 eio_api_destroy (req); \ 1754 eio_api_destroy (req); \
1553 return 0; \ 1755 return 0; \
1554 } 1756 }
1555 1757
1758#define SINGLEDOT(ptr) (0[(char *)(ptr)] == '.' && !1[(char *)(ptr)])
1759
1760static void
1556static void eio_execute (etp_worker *self, eio_req *req) 1761eio_execute (etp_worker *self, eio_req *req)
1557{ 1762{
1558 errno = 0; 1763#if HAVE_AT
1764 int dirfd;
1765#else
1766 const char *path;
1767#endif
1768
1769 if (ecb_expect_false (EIO_CANCELLED (req)))
1770 {
1771 req->result = -1;
1772 req->errorno = ECANCELED;
1773 return;
1774 }
1775
1776 if (ecb_expect_false (req->wd == EIO_INVALID_WD))
1777 {
1778 req->result = -1;
1779 req->errorno = ENOENT;
1780 return;
1781 }
1782
1783 if (req->type >= EIO_OPEN)
1784 {
1785 #if HAVE_AT
1786 dirfd = WD2FD (req->wd);
1787 #else
1788 path = wd_expand (&self->tmpbuf, req->wd, req->ptr1);
1789 #endif
1790 }
1559 1791
1560 switch (req->type) 1792 switch (req->type)
1561 { 1793 {
1794 case EIO_WD_OPEN: req->wd = eio__wd_open_sync (&self->tmpbuf, req->wd, req->ptr1);
1795 req->result = req->wd == EIO_INVALID_WD ? -1 : 0;
1796 break;
1797 case EIO_WD_CLOSE: req->result = 0;
1798 eio_wd_close_sync (req->wd); break;
1799
1800 case EIO_SEEK: eio__lseek (req); break;
1562 case EIO_READ: ALLOC (req->size); 1801 case EIO_READ: ALLOC (req->size);
1563 req->result = req->offs >= 0 1802 req->result = req->offs >= 0
1564 ? pread (req->int1, req->ptr2, req->size, req->offs) 1803 ? pread (req->int1, req->ptr2, req->size, req->offs)
1565 : read (req->int1, req->ptr2, req->size); break; 1804 : read (req->int1, req->ptr2, req->size); break;
1566 case EIO_WRITE: req->result = req->offs >= 0 1805 case EIO_WRITE: req->result = req->offs >= 0
1567 ? pwrite (req->int1, req->ptr2, req->size, req->offs) 1806 ? pwrite (req->int1, req->ptr2, req->size, req->offs)
1568 : write (req->int1, req->ptr2, req->size); break; 1807 : write (req->int1, req->ptr2, req->size); break;
1569 1808
1570 case EIO_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break; 1809 case EIO_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1571 case EIO_SENDFILE: req->result = eio__sendfile (req->int1, req->int2, req->offs, req->size, self); break; 1810 case EIO_SENDFILE: req->result = eio__sendfile (req->int1, req->int2, req->offs, req->size); break;
1811
1812#if HAVE_AT
1572 1813
1573 case EIO_STAT: ALLOC (sizeof (EIO_STRUCT_STAT)); 1814 case EIO_STAT: ALLOC (sizeof (EIO_STRUCT_STAT));
1574 req->result = stat (req->ptr1, (EIO_STRUCT_STAT *)req->ptr2); break; 1815 req->result = fstatat (dirfd, req->ptr1, (EIO_STRUCT_STAT *)req->ptr2, 0); break;
1575 case EIO_LSTAT: ALLOC (sizeof (EIO_STRUCT_STAT)); 1816 case EIO_LSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));
1576 req->result = lstat (req->ptr1, (EIO_STRUCT_STAT *)req->ptr2); break; 1817 req->result = fstatat (dirfd, req->ptr1, (EIO_STRUCT_STAT *)req->ptr2, AT_SYMLINK_NOFOLLOW); break;
1577 case EIO_FSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));
1578 req->result = fstat (req->int1, (EIO_STRUCT_STAT *)req->ptr2); break;
1579
1580 case EIO_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break; 1818 case EIO_CHOWN: req->result = fchownat (dirfd, req->ptr1, req->int2, req->int3, 0); break;
1581 case EIO_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
1582 case EIO_CHMOD: req->result = chmod (req->ptr1, (mode_t)req->int2); break; 1819 case EIO_CHMOD: req->result = fchmodat (dirfd, req->ptr1, (mode_t)req->int2, 0); break;
1583 case EIO_FCHMOD: req->result = fchmod (req->int1, (mode_t)req->int2); break;
1584 case EIO_TRUNCATE: req->result = truncate (req->ptr1, req->offs); break; 1820 case EIO_TRUNCATE: req->result = eio__truncateat (dirfd, req->ptr1, req->offs); break;
1585 case EIO_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break;
1586
1587 case EIO_OPEN: req->result = open (req->ptr1, req->int1, (mode_t)req->int2); break; 1821 case EIO_OPEN: req->result = openat (dirfd, req->ptr1, req->int1, (mode_t)req->int2); break;
1588 case EIO_CLOSE: req->result = close (req->int1); break; 1822
1589 case EIO_DUP2: req->result = dup2 (req->int1, req->int2); break;
1590 case EIO_UNLINK: req->result = unlink (req->ptr1); break; 1823 case EIO_UNLINK: req->result = unlinkat (dirfd, req->ptr1, 0); break;
1591 case EIO_RMDIR: req->result = rmdir (req->ptr1); break; 1824 case EIO_RMDIR: /* complications arise because "." cannot be removed, so we might have to expand */
1825 req->result = req->wd && SINGLEDOT (req->ptr1)
1826 ? rmdir (req->wd->str)
1827 : unlinkat (dirfd, req->ptr1, AT_REMOVEDIR); break;
1592 case EIO_MKDIR: req->result = mkdir (req->ptr1, (mode_t)req->int2); break; 1828 case EIO_MKDIR: req->result = mkdirat (dirfd, req->ptr1, (mode_t)req->int2); break;
1593 case EIO_RENAME: req->result = rename (req->ptr1, req->ptr2); break; 1829 case EIO_RENAME: /* complications arise because "." cannot be renamed, so we might have to expand */
1830 req->result = req->wd && SINGLEDOT (req->ptr1)
1831 ? rename (req->wd->str, req->ptr2)
1832 : renameat (dirfd, req->ptr1, WD2FD ((eio_wd)req->int3), req->ptr2); break;
1594 case EIO_LINK: req->result = link (req->ptr1, req->ptr2); break; 1833 case EIO_LINK: req->result = linkat (dirfd, req->ptr1, WD2FD ((eio_wd)req->int3), req->ptr2, 0); break;
1595 case EIO_SYMLINK: req->result = symlink (req->ptr1, req->ptr2); break; 1834 case EIO_SYMLINK: req->result = symlinkat (req->ptr1, dirfd, req->ptr2); break;
1596 case EIO_MKNOD: req->result = mknod (req->ptr1, (mode_t)req->int2, (dev_t)req->int3); break; 1835 case EIO_MKNOD: req->result = mknodat (dirfd, req->ptr1, (mode_t)req->int2, (dev_t)req->offs); break;
1597
1598 case EIO_READLINK: ALLOC (NAME_MAX); 1836 case EIO_READLINK: ALLOC (PATH_MAX);
1599 req->result = readlink (req->ptr1, req->ptr2, NAME_MAX); break; 1837 req->result = readlinkat (dirfd, req->ptr1, req->ptr2, PATH_MAX); break;
1600 1838 case EIO_STATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS));
1601 case EIO_SYNC: req->result = 0; sync (); break; 1839 req->result = eio__statvfsat (dirfd, req->ptr1, (EIO_STRUCT_STATVFS *)req->ptr2); break;
1602 case EIO_FSYNC: req->result = fsync (req->int1); break;
1603 case EIO_FDATASYNC: req->result = fdatasync (req->int1); break;
1604 case EIO_MSYNC: req->result = eio__msync (req->ptr2, req->size, req->int1); break;
1605 case EIO_MTOUCH: req->result = eio__mtouch (req->ptr2, req->size, req->int1); break;
1606 case EIO_SYNC_FILE_RANGE: req->result = eio__sync_file_range (req->int1, req->offs, req->size, req->int2); break;
1607
1608 case EIO_READDIR: eio__scandir (req, self); break;
1609
1610 case EIO_BUSY: 1840 case EIO_UTIME:
1611#ifdef _WIN32 1841 case EIO_FUTIME:
1612 Sleep (req->nv1 * 1000.); 1842 {
1843 struct timespec ts[2];
1844 struct timespec *times;
1845
1846 if (req->nv1 != -1. || req->nv2 != -1.)
1847 {
1848 ts[0].tv_sec = req->nv1;
1849 ts[0].tv_nsec = (req->nv1 - ts[0].tv_sec) * 1e9;
1850 ts[1].tv_sec = req->nv2;
1851 ts[1].tv_nsec = (req->nv2 - ts[1].tv_sec) * 1e9;
1852
1853 times = ts;
1854 }
1855 else
1856 times = 0;
1857
1858 req->result = req->type == EIO_FUTIME
1859 ? futimens (req->int1, times)
1860 : utimensat (dirfd, req->ptr1, times, 0);
1861 }
1862 break;
1863
1613#else 1864#else
1614 {
1615 struct timeval tv;
1616 1865
1617 tv.tv_sec = req->nv1; 1866 case EIO_STAT: ALLOC (sizeof (EIO_STRUCT_STAT));
1618 tv.tv_usec = (req->nv1 - tv.tv_sec) * 1000000.; 1867 req->result = stat (path , (EIO_STRUCT_STAT *)req->ptr2); break;
1868 case EIO_LSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));
1869 req->result = lstat (path , (EIO_STRUCT_STAT *)req->ptr2); break;
1870 case EIO_CHOWN: req->result = chown (path , req->int2, req->int3); break;
1871 case EIO_CHMOD: req->result = chmod (path , (mode_t)req->int2); break;
1872 case EIO_TRUNCATE: req->result = truncate (path , req->offs); break;
1873 case EIO_OPEN: req->result = open (path , req->int1, (mode_t)req->int2); break;
1619 1874
1620 req->result = select (0, 0, 0, 0, &tv); 1875 case EIO_UNLINK: req->result = unlink (path ); break;
1621 } 1876 case EIO_RMDIR: req->result = rmdir (path ); break;
1622#endif 1877 case EIO_MKDIR: req->result = mkdir (path , (mode_t)req->int2); break;
1623 break; 1878 case EIO_RENAME: req->result = rename (path , req->ptr2); break;
1879 case EIO_LINK: req->result = link (path , req->ptr2); break;
1880 case EIO_SYMLINK: req->result = symlink (path , req->ptr2); break;
1881 case EIO_MKNOD: req->result = mknod (path , (mode_t)req->int2, (dev_t)req->offs); break;
1882 case EIO_READLINK: ALLOC (PATH_MAX);
1883 req->result = readlink (path, req->ptr2, PATH_MAX); break;
1884 case EIO_STATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS));
1885 req->result = statvfs (path , (EIO_STRUCT_STATVFS *)req->ptr2); break;
1624 1886
1625 case EIO_UTIME: 1887 case EIO_UTIME:
1626 case EIO_FUTIME: 1888 case EIO_FUTIME:
1627 { 1889 {
1628 struct timeval tv[2]; 1890 struct timeval tv[2];
1629 struct timeval *times; 1891 struct timeval *times;
1630 1892
1631 if (req->nv1 != -1. || req->nv2 != -1.) 1893 if (req->nv1 != -1. || req->nv2 != -1.)
1632 { 1894 {
1633 tv[0].tv_sec = req->nv1; 1895 tv[0].tv_sec = req->nv1;
1634 tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.; 1896 tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1e6;
1635 tv[1].tv_sec = req->nv2; 1897 tv[1].tv_sec = req->nv2;
1636 tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.; 1898 tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1e6;
1637 1899
1638 times = tv; 1900 times = tv;
1639 } 1901 }
1640 else 1902 else
1641 times = 0; 1903 times = 0;
1642
1643 1904
1644 req->result = req->type == EIO_FUTIME 1905 req->result = req->type == EIO_FUTIME
1645 ? futimes (req->int1, times) 1906 ? futimes (req->int1, times)
1646 : utimes (req->ptr1, times); 1907 : utimes (req->ptr1, times);
1647 } 1908 }
1648 break; 1909 break;
1649 1910
1911#endif
1912
1913 case EIO_REALPATH: if (0 <= (req->result = eio__realpath (&self->tmpbuf, req->wd, req->ptr1)))
1914 {
1915 ALLOC (req->result);
1916 memcpy (req->ptr2, self->tmpbuf.ptr, req->result);
1917 }
1918 break;
1919
1920 case EIO_FSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));
1921 req->result = fstat (req->int1, (EIO_STRUCT_STAT *)req->ptr2); break;
1922
1923 case EIO_FSTATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS));
1924 req->result = fstatvfs (req->int1, (EIO_STRUCT_STATVFS *)req->ptr2); break;
1925
1926 case EIO_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
1927 case EIO_FCHMOD: req->result = fchmod (req->int1, (mode_t)req->int2); break;
1928 case EIO_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break;
1929
1930 case EIO_CLOSE: req->result = close (req->int1); break;
1931 case EIO_DUP2: req->result = dup2 (req->int1, req->int2); break;
1932 case EIO_SYNC: req->result = 0; sync (); break;
1933 case EIO_FSYNC: req->result = fsync (req->int1); break;
1934 case EIO_FDATASYNC: req->result = fdatasync (req->int1); break;
1935 case EIO_SYNCFS: req->result = eio__syncfs (req->int1); break;
1936 case EIO_SYNC_FILE_RANGE: req->result = eio__sync_file_range (req->int1, req->offs, req->size, req->int2); break;
1937 case EIO_MSYNC: req->result = eio__msync (req->ptr2, req->size, req->int1); break;
1938 case EIO_MTOUCH: req->result = eio__mtouch (req); break;
1939 case EIO_MLOCK: req->result = eio__mlock (req->ptr2, req->size); break;
1940 case EIO_MLOCKALL: req->result = eio__mlockall (req->int1); break;
1941 case EIO_FALLOCATE: req->result = eio__fallocate (req->int1, req->int2, req->offs, req->size); break;
1942
1943 case EIO_READDIR: eio__scandir (req, self); break;
1944
1945 case EIO_BUSY:
1946#ifdef _WIN32
1947 Sleep (req->nv1 * 1e3);
1948#else
1949 {
1950 struct timeval tv;
1951
1952 tv.tv_sec = req->nv1;
1953 tv.tv_usec = (req->nv1 - tv.tv_sec) * 1e6;
1954
1955 req->result = select (0, 0, 0, 0, &tv);
1956 }
1957#endif
1958 break;
1959
1960#if 0
1650 case EIO_GROUP: 1961 case EIO_GROUP:
1651 abort (); /* handled in eio_request */ 1962 abort (); /* handled in eio_request */
1963#endif
1652 1964
1653 case EIO_NOP: 1965 case EIO_NOP:
1654 req->result = 0; 1966 req->result = 0;
1655 break; 1967 break;
1656 1968
1657 case EIO_CUSTOM: 1969 case EIO_CUSTOM:
1658 ((void (*)(eio_req *))req->feed) (req); 1970 req->feed (req);
1659 break; 1971 break;
1660 1972
1661 default: 1973 default:
1662 req->result = -1; 1974 req->result = EIO_ENOSYS ();
1663 break; 1975 break;
1664 } 1976 }
1665 1977
1666 req->errorno = errno; 1978 req->errorno = errno;
1667} 1979}
1668 1980
1669#ifndef EIO_NO_WRAPPERS 1981#ifndef EIO_NO_WRAPPERS
1670 1982
1983eio_req *eio_wd_open (const char *path, int pri, eio_cb cb, void *data)
1984{
1985 REQ (EIO_WD_OPEN); PATH; SEND;
1986}
1987
1988eio_req *eio_wd_close (eio_wd wd, int pri, eio_cb cb, void *data)
1989{
1990 REQ (EIO_WD_CLOSE); req->wd = wd; SEND;
1991}
1992
1671eio_req *eio_nop (int pri, eio_cb cb, void *data) 1993eio_req *eio_nop (int pri, eio_cb cb, void *data)
1672{ 1994{
1673 REQ (EIO_NOP); SEND; 1995 REQ (EIO_NOP); SEND;
1674} 1996}
1675 1997
… …
1691eio_req *eio_msync (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data) 2013eio_req *eio_msync (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data)
1692{ 2014{
1693 REQ (EIO_MSYNC); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND; 2015 REQ (EIO_MSYNC); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND;
1694} 2016}
1695 2017
2018eio_req *eio_fdatasync (int fd, int pri, eio_cb cb, void *data)
2019{
2020 REQ (EIO_FDATASYNC); req->int1 = fd; SEND;
2021}
2022
2023eio_req *eio_syncfs (int fd, int pri, eio_cb cb, void *data)
2024{
2025 REQ (EIO_SYNCFS); req->int1 = fd; SEND;
2026}
2027
2028eio_req *eio_sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags, int pri, eio_cb cb, void *data)
2029{
2030 REQ (EIO_SYNC_FILE_RANGE); req->int1 = fd; req->offs = offset; req->size = nbytes; req->int2 = flags; SEND;
2031}
2032
1696eio_req *eio_mtouch (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data) 2033eio_req *eio_mtouch (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data)
1697{ 2034{
1698 REQ (EIO_MTOUCH); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND; 2035 REQ (EIO_MTOUCH); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND;
1699} 2036}
1700 2037
1701eio_req *eio_sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags, int pri, eio_cb cb, void *data) 2038eio_req *eio_mlock (void *addr, size_t length, int pri, eio_cb cb, void *data)
1702{ 2039{
1703 REQ (EIO_SYNC_FILE_RANGE); req->int1 = fd; req->offs = offset; req->size = nbytes; req->int2 = flags; SEND; 2040 REQ (EIO_MLOCK); req->ptr2 = addr; req->size = length; SEND;
1704} 2041}
1705 2042
1706eio_req *eio_fdatasync (int fd, int pri, eio_cb cb, void *data) 2043eio_req *eio_mlockall (int flags, int pri, eio_cb cb, void *data)
1707{ 2044{
1708 REQ (EIO_FDATASYNC); req->int1 = fd; SEND; 2045 REQ (EIO_MLOCKALL); req->int1 = flags; SEND;
2046}
2047
2048eio_req *eio_fallocate (int fd, int mode, off_t offset, size_t len, int pri, eio_cb cb, void *data)
2049{
2050 REQ (EIO_FALLOCATE); req->int1 = fd; req->int2 = mode; req->offs = offset; req->size = len; SEND;
1709} 2051}
1710 2052
1711eio_req *eio_close (int fd, int pri, eio_cb cb, void *data) 2053eio_req *eio_close (int fd, int pri, eio_cb cb, void *data)
1712{ 2054{
1713 REQ (EIO_CLOSE); req->int1 = fd; SEND; 2055 REQ (EIO_CLOSE); req->int1 = fd; SEND;
… …
1716eio_req *eio_readahead (int fd, off_t offset, size_t length, int pri, eio_cb cb, void *data) 2058eio_req *eio_readahead (int fd, off_t offset, size_t length, int pri, eio_cb cb, void *data)
1717{ 2059{
1718 REQ (EIO_READAHEAD); req->int1 = fd; req->offs = offset; req->size = length; SEND; 2060 REQ (EIO_READAHEAD); req->int1 = fd; req->offs = offset; req->size = length; SEND;
1719} 2061}
1720 2062
2063eio_req *eio_seek (int fd, off_t offset, int whence, int pri, eio_cb cb, void *data)
2064{
2065 REQ (EIO_SEEK); req->int1 = fd; req->offs = offset; req->int2 = whence; SEND;
2066}
2067
1721eio_req *eio_read (int fd, void *buf, size_t length, off_t offset, int pri, eio_cb cb, void *data) 2068eio_req *eio_read (int fd, void *buf, size_t length, off_t offset, int pri, eio_cb cb, void *data)
1722{ 2069{
1723 REQ (EIO_READ); req->int1 = fd; req->offs = offset; req->size = length; req->ptr2 = buf; SEND; 2070 REQ (EIO_READ); req->int1 = fd; req->offs = offset; req->size = length; req->ptr2 = buf; SEND;
1724} 2071}
1725 2072
… …
1731eio_req *eio_fstat (int fd, int pri, eio_cb cb, void *data) 2078eio_req *eio_fstat (int fd, int pri, eio_cb cb, void *data)
1732{ 2079{
1733 REQ (EIO_FSTAT); req->int1 = fd; SEND; 2080 REQ (EIO_FSTAT); req->int1 = fd; SEND;
1734} 2081}
1735 2082
2083eio_req *eio_fstatvfs (int fd, int pri, eio_cb cb, void *data)
2084{
2085 REQ (EIO_FSTATVFS); req->int1 = fd; SEND;
2086}
2087
1736eio_req *eio_futime (int fd, double atime, double mtime, int pri, eio_cb cb, void *data) 2088eio_req *eio_futime (int fd, double atime, double mtime, int pri, eio_cb cb, void *data)
1737{ 2089{
1738 REQ (EIO_FUTIME); req->int1 = fd; req->nv1 = atime; req->nv2 = mtime; SEND; 2090 REQ (EIO_FUTIME); req->int1 = fd; req->nv1 = atime; req->nv2 = mtime; SEND;
1739} 2091}
1740 2092
… …
1746eio_req *eio_fchmod (int fd, mode_t mode, int pri, eio_cb cb, void *data) 2098eio_req *eio_fchmod (int fd, mode_t mode, int pri, eio_cb cb, void *data)
1747{ 2099{
1748 REQ (EIO_FCHMOD); req->int1 = fd; req->int2 = (long)mode; SEND; 2100 REQ (EIO_FCHMOD); req->int1 = fd; req->int2 = (long)mode; SEND;
1749} 2101}
1750 2102
1751eio_req *eio_fchown (int fd, uid_t uid, gid_t gid, int pri, eio_cb cb, void *data) 2103eio_req *eio_fchown (int fd, eio_uid_t uid, eio_gid_t gid, int pri, eio_cb cb, void *data)
1752{ 2104{
1753 REQ (EIO_FCHOWN); req->int1 = fd; req->int2 = (long)uid; req->int3 = (long)gid; SEND; 2105 REQ (EIO_FCHOWN); req->int1 = fd; req->int2 = (long)uid; req->int3 = (long)gid; SEND;
1754} 2106}
1755 2107
1756eio_req *eio_dup2 (int fd, int fd2, int pri, eio_cb cb, void *data) 2108eio_req *eio_dup2 (int fd, int fd2, int pri, eio_cb cb, void *data)
… …
1776eio_req *eio_truncate (const char *path, off_t offset, int pri, eio_cb cb, void *data) 2128eio_req *eio_truncate (const char *path, off_t offset, int pri, eio_cb cb, void *data)
1777{ 2129{
1778 REQ (EIO_TRUNCATE); PATH; req->offs = offset; SEND; 2130 REQ (EIO_TRUNCATE); PATH; req->offs = offset; SEND;
1779} 2131}
1780 2132
1781eio_req *eio_chown (const char *path, uid_t uid, gid_t gid, int pri, eio_cb cb, void *data) 2133eio_req *eio_chown (const char *path, eio_uid_t uid, eio_gid_t gid, int pri, eio_cb cb, void *data)
1782{ 2134{
1783 REQ (EIO_CHOWN); PATH; req->int2 = (long)uid; req->int3 = (long)gid; SEND; 2135 REQ (EIO_CHOWN); PATH; req->int2 = (long)uid; req->int3 = (long)gid; SEND;
1784} 2136}
1785 2137
1786eio_req *eio_chmod (const char *path, mode_t mode, int pri, eio_cb cb, void *data) 2138eio_req *eio_chmod (const char *path, mode_t mode, int pri, eio_cb cb, void *data)
… …
1802eio_req *eio_readlink (const char *path, int pri, eio_cb cb, void *data) 2154eio_req *eio_readlink (const char *path, int pri, eio_cb cb, void *data)
1803{ 2155{
1804 return eio__1path (EIO_READLINK, path, pri, cb, data); 2156 return eio__1path (EIO_READLINK, path, pri, cb, data);
1805} 2157}
1806 2158
2159eio_req *eio_realpath (const char *path, int pri, eio_cb cb, void *data)
2160{
2161 return eio__1path (EIO_REALPATH, path, pri, cb, data);
2162}
2163
1807eio_req *eio_stat (const char *path, int pri, eio_cb cb, void *data) 2164eio_req *eio_stat (const char *path, int pri, eio_cb cb, void *data)
1808{ 2165{
1809 return eio__1path (EIO_STAT, path, pri, cb, data); 2166 return eio__1path (EIO_STAT, path, pri, cb, data);
1810} 2167}
1811 2168
1812eio_req *eio_lstat (const char *path, int pri, eio_cb cb, void *data) 2169eio_req *eio_lstat (const char *path, int pri, eio_cb cb, void *data)
1813{ 2170{
1814 return eio__1path (EIO_LSTAT, path, pri, cb, data); 2171 return eio__1path (EIO_LSTAT, path, pri, cb, data);
1815} 2172}
1816 2173
2174eio_req *eio_statvfs (const char *path, int pri, eio_cb cb, void *data)
2175{
2176 return eio__1path (EIO_STATVFS, path, pri, cb, data);
2177}
2178
1817eio_req *eio_unlink (const char *path, int pri, eio_cb cb, void *data) 2179eio_req *eio_unlink (const char *path, int pri, eio_cb cb, void *data)
1818{ 2180{
1819 return eio__1path (EIO_UNLINK, path, pri, cb, data); 2181 return eio__1path (EIO_UNLINK, path, pri, cb, data);
1820} 2182}
1821 2183
… …
1829 REQ (EIO_READDIR); PATH; req->int1 = flags; SEND; 2191 REQ (EIO_READDIR); PATH; req->int1 = flags; SEND;
1830} 2192}
1831 2193
1832eio_req *eio_mknod (const char *path, mode_t mode, dev_t dev, int pri, eio_cb cb, void *data) 2194eio_req *eio_mknod (const char *path, mode_t mode, dev_t dev, int pri, eio_cb cb, void *data)
1833{ 2195{
1834 REQ (EIO_MKNOD); PATH; req->int2 = (long)mode; req->int3 = (long)dev; SEND; 2196 REQ (EIO_MKNOD); PATH; req->int2 = (long)mode; req->offs = (off_t)dev; SEND;
1835} 2197}
1836 2198
1837static eio_req * 2199static eio_req *
1838eio__2path (int type, const char *path, const char *new_path, int pri, eio_cb cb, void *data) 2200eio__2path (int type, const char *path, const char *new_path, int pri, eio_cb cb, void *data)
1839{ 2201{
… …
1863eio_req *eio_rename (const char *path, const char *new_path, int pri, eio_cb cb, void *data) 2225eio_req *eio_rename (const char *path, const char *new_path, int pri, eio_cb cb, void *data)
1864{ 2226{
1865 return eio__2path (EIO_RENAME, path, new_path, pri, cb, data); 2227 return eio__2path (EIO_RENAME, path, new_path, pri, cb, data);
1866} 2228}
1867 2229
1868eio_req *eio_custom (eio_cb execute, int pri, eio_cb cb, void *data) 2230eio_req *eio_custom (void (*execute)(eio_req *), int pri, eio_cb cb, void *data)
1869{ 2231{
1870 REQ (EIO_CUSTOM); req->feed = (void (*)(eio_req *))execute; SEND; 2232 REQ (EIO_CUSTOM); req->feed = execute; SEND;
1871} 2233}
1872 2234
1873#endif 2235#endif
1874 2236
1875eio_req *eio_grp (eio_cb cb, void *data) 2237eio_req *eio_grp (eio_cb cb, void *data)
… …
1884#undef SEND 2246#undef SEND
1885 2247
1886/*****************************************************************************/ 2248/*****************************************************************************/
1887/* grp functions */ 2249/* grp functions */
1888 2250
2251void
1889void eio_grp_feed (eio_req *grp, void (*feed)(eio_req *req), int limit) 2252eio_grp_feed (eio_req *grp, void (*feed)(eio_req *req), int limit)
1890{ 2253{
1891 grp->int2 = limit; 2254 grp->int2 = limit;
1892 grp->feed = feed; 2255 grp->feed = feed;
1893 2256
1894 grp_try_feed (grp); 2257 grp_try_feed (grp);
1895} 2258}
1896 2259
2260void
1897void eio_grp_limit (eio_req *grp, int limit) 2261eio_grp_limit (eio_req *grp, int limit)
1898{ 2262{
1899 grp->int2 = limit; 2263 grp->int2 = limit;
1900 2264
1901 grp_try_feed (grp); 2265 grp_try_feed (grp);
1902} 2266}
1903 2267
2268void
1904void eio_grp_add (eio_req *grp, eio_req *req) 2269eio_grp_add (eio_req *grp, eio_req *req)
1905{ 2270{
1906 assert (("cannot add requests to IO::AIO::GRP after the group finished", grp->int1 != 2)); 2271 assert (("cannot add requests to IO::AIO::GRP after the group finished", grp->int1 != 2));
1907 2272
1908 grp->flags |= EIO_FLAG_GROUPADD; 2273 grp->flags |= ETP_FLAG_GROUPADD;
1909 2274
1910 ++grp->size; 2275 ++grp->size;
1911 req->grp = grp; 2276 req->grp = grp;
1912 2277
1913 req->grp_prev = 0; 2278 req->grp_prev = 0;
… …
1920} 2285}
1921 2286
1922/*****************************************************************************/ 2287/*****************************************************************************/
1923/* misc garbage */ 2288/* misc garbage */
1924 2289
2290eio_ssize_t
1925ssize_t eio_sendfile_sync (int ofd, int ifd, off_t offset, size_t count) 2291eio_sendfile_sync (int ofd, int ifd, off_t offset, size_t count)
1926{ 2292{
1927 etp_worker wrk;
1928 ssize_t ret;
1929
1930 wrk.dbuf = 0;
1931
1932 ret = eio__sendfile (ofd, ifd, offset, count, &wrk); 2293 return eio__sendfile (ofd, ifd, offset, count);
1933
1934 if (wrk.dbuf)
1935 free (wrk.dbuf);
1936
1937 return ret;
1938} 2294}
1939 2295

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