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Comparing libeio/eio.c (file contents):
Revision 1.30 by root, Wed Jun 3 12:24:49 2009 UTC vs.
Revision 1.134 by root, Thu Jun 25 15:59:57 2015 UTC

1/* 1/*
2 * libeio implementation 2 * libeio implementation
3 * 3 *
4 * Copyright (c) 2007,2008 Marc Alexander Lehmann <libeio@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010,2011,2012,2013 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)
73 232
74#else 233#else
75 234
76# include "config.h"
77# include <sys/time.h> 235 #include <sys/time.h>
78# include <sys/select.h> 236 #include <sys/select.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# ifndef EIO_STRUCT_DIRENT
85# define EIO_STRUCT_DIRENT struct dirent
86# endif 282#endif
87 283
284#if HAVE_SYS_SYSCALL_H
285# include <sys/syscall.h>
286#endif
287
288#if HAVE_SYS_PRCTL_H
289# include <sys/prctl.h>
88#endif 290#endif
89 291
90#if HAVE_SENDFILE 292#if HAVE_SENDFILE
91# if __linux 293# if __linux
92# include <sys/sendfile.h> 294# include <sys/sendfile.h>
93# elif __freebsd 295# elif __FreeBSD__ || defined __APPLE__
94# include <sys/socket.h> 296# include <sys/socket.h>
95# include <sys/uio.h> 297# include <sys/uio.h>
96# elif __hpux 298# elif __hpux
97# include <sys/socket.h> 299# include <sys/socket.h>
98# elif __solaris /* not yet */ 300# elif __solaris
99# include <sys/sendfile.h> 301# include <sys/sendfile.h>
100# else 302# else
101# error sendfile support requested but not available 303# error sendfile support requested but not available
102# endif 304# endif
103#endif 305#endif
104 306
105/* number of seconds after which an idle threads exit */ 307#ifndef D_TYPE
106#define IDLE_TIMEOUT 10 308# define D_TYPE(de) 0
309#endif
310#ifndef D_INO
311# define D_INO(de) 0
312#endif
313#ifndef D_NAMLEN
314# define D_NAMLEN(entp) strlen (D_NAME (entp))
315#endif
107 316
108/* used for struct dirent, AIX doesn't provide it */ 317/* used for struct dirent, AIX doesn't provide it */
109#ifndef NAME_MAX 318#ifndef NAME_MAX
110# define NAME_MAX 4096 319# define NAME_MAX 4096
111#endif 320#endif
112 321
322/* used for readlink etc. */
323#ifndef PATH_MAX
324# define PATH_MAX 4096
325#endif
326
113/* buffer size for various temporary buffers */ 327/* buffer size for various temporary buffers */
114#define EIO_BUFSIZE 65536 328#define EIO_BUFSIZE 65536
115 329
116#define dBUF \ 330#define dBUF \
117 char *eio_buf; \
118 ETP_WORKER_LOCK (self); \
119 self->dbuf = eio_buf = malloc (EIO_BUFSIZE); \ 331 char *eio_buf = malloc (EIO_BUFSIZE); \
120 ETP_WORKER_UNLOCK (self); \
121 errno = ENOMEM; \ 332 errno = ENOMEM; \
122 if (!eio_buf) \ 333 if (!eio_buf) \
123 return -1; 334 return -1
124 335
125#define EIO_TICKS ((1000000 + 1023) >> 10) 336#define FUBd \
337 free (eio_buf)
126 338
127/*****************************************************************************/ 339/*****************************************************************************/
128 340
129#if __GNUC__ >= 3 341struct etp_tmpbuf;
130# 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
131#else 349#else
132# 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);
133#endif 352#endif
134 353
135#define expect_false(expr) expect ((expr) != 0, 0) 354struct eio_pwd
136#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};
137 362
138/*****************************************************************************/ 363/*****************************************************************************/
139 364
140#define ETP_PRI_MIN EIO_PRI_MIN 365#define ETP_PRI_MIN EIO_PRI_MIN
141#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
142 370
143struct etp_worker; 371struct etp_worker;
144 372
145#define ETP_REQ eio_req 373#define ETP_REQ eio_req
146#define ETP_DESTROY(req) eio_destroy (req) 374#define ETP_DESTROY(req) eio_destroy (req)
147static int eio_finish (eio_req *req); 375static int eio_finish (eio_req *req);
148#define ETP_FINISH(req) eio_finish (req) 376#define ETP_FINISH(req) eio_finish (req)
149static void eio_execute (struct etp_worker *self, eio_req *req); 377static void eio_execute (struct etp_worker *self, eio_req *req);
150#define ETP_EXECUTE(wrk,req) eio_execute (wrk,req) 378#define ETP_EXECUTE(wrk,req) eio_execute (wrk, req)
151 379
152#define ETP_WORKER_CLEAR(req) \ 380#include "etp.c"
153 if (wrk->dbuf) \
154 { \
155 free (wrk->dbuf); \
156 wrk->dbuf = 0; \
157 } \
158 \
159 if (wrk->dirp) \
160 { \
161 closedir (wrk->dirp); \
162 wrk->dirp = 0; \
163 }
164#define ETP_WORKER_COMMON \
165 void *dbuf; \
166 DIR *dirp;
167 381
168/*****************************************************************************/ 382/*****************************************************************************/
169 383
170#define ETP_NUM_PRI (ETP_PRI_MAX - ETP_PRI_MIN + 1)
171
172/* calculcate time difference in ~1/EIO_TICKS of a second */
173static int tvdiff (struct timeval *tv1, struct timeval *tv2)
174{
175 return (tv2->tv_sec - tv1->tv_sec ) * EIO_TICKS
176 + ((tv2->tv_usec - tv1->tv_usec) >> 10);
177}
178
179static unsigned int started, idle, wanted = 4;
180
181static void (*want_poll_cb) (void);
182static void (*done_poll_cb) (void);
183
184static unsigned int max_poll_time; /* reslock */
185static unsigned int max_poll_reqs; /* reslock */
186
187static volatile unsigned int nreqs; /* reqlock */
188static volatile unsigned int nready; /* reqlock */
189static volatile unsigned int npending; /* reqlock */
190static volatile unsigned int max_idle = 4;
191
192static mutex_t wrklock = X_MUTEX_INIT;
193static mutex_t reslock = X_MUTEX_INIT;
194static mutex_t reqlock = X_MUTEX_INIT;
195static cond_t reqwait = X_COND_INIT;
196
197#if !HAVE_PREADWRITE
198/*
199 * make our pread/pwrite emulation safe against themselves, but not against
200 * normal read/write by using a mutex. slows down execution a lot,
201 * but that's your problem, not mine.
202 */
203static mutex_t preadwritelock = X_MUTEX_INIT;
204#endif
205
206typedef struct etp_worker
207{
208 /* locked by wrklock */
209 struct etp_worker *prev, *next;
210
211 thread_t tid;
212
213 /* locked by reslock, reqlock or wrklock */
214 ETP_REQ *req; /* currently processed request */
215
216 ETP_WORKER_COMMON
217} etp_worker;
218
219static etp_worker wrk_first = { &wrk_first, &wrk_first, 0 }; /* NOT etp */
220
221#define ETP_WORKER_LOCK(wrk) X_LOCK (wrklock)
222#define ETP_WORKER_UNLOCK(wrk) X_UNLOCK (wrklock)
223
224/* worker threads management */
225
226static void etp_worker_clear (etp_worker *wrk)
227{
228 ETP_WORKER_CLEAR (wrk);
229}
230
231static void etp_worker_free (etp_worker *wrk)
232{
233 wrk->next->prev = wrk->prev;
234 wrk->prev->next = wrk->next;
235
236 free (wrk);
237}
238
239static unsigned int etp_nreqs (void)
240{
241 int retval;
242 if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
243 retval = nreqs;
244 if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
245 return retval;
246}
247
248static unsigned int etp_nready (void)
249{
250 unsigned int retval;
251
252 if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
253 retval = nready;
254 if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
255
256 return retval;
257}
258
259static unsigned int etp_npending (void)
260{
261 unsigned int retval;
262
263 if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
264 retval = npending;
265 if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
266
267 return retval;
268}
269
270static unsigned int etp_nthreads (void)
271{
272 unsigned int retval;
273
274 if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
275 retval = started;
276 if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
277
278 return retval;
279}
280
281/*
282 * a somewhat faster data structure might be nice, but
283 * with 8 priorities this actually needs <20 insns
284 * per shift, the most expensive operation.
285 */
286typedef struct {
287 ETP_REQ *qs[ETP_NUM_PRI], *qe[ETP_NUM_PRI]; /* qstart, qend */
288 int size;
289} etp_reqq;
290
291static etp_reqq req_queue;
292static etp_reqq res_queue;
293
294static int reqq_push (etp_reqq *q, ETP_REQ *req)
295{
296 int pri = req->pri;
297 req->next = 0;
298
299 if (q->qe[pri])
300 {
301 q->qe[pri]->next = req;
302 q->qe[pri] = req;
303 }
304 else
305 q->qe[pri] = q->qs[pri] = req;
306
307 return q->size++;
308}
309
310static ETP_REQ *reqq_shift (etp_reqq *q)
311{
312 int pri;
313
314 if (!q->size)
315 return 0;
316
317 --q->size;
318
319 for (pri = ETP_NUM_PRI; pri--; )
320 {
321 eio_req *req = q->qs[pri];
322
323 if (req)
324 {
325 if (!(q->qs[pri] = (eio_req *)req->next))
326 q->qe[pri] = 0;
327
328 return req;
329 }
330 }
331
332 abort ();
333}
334
335static void etp_atfork_prepare (void)
336{
337 X_LOCK (wrklock);
338 X_LOCK (reqlock);
339 X_LOCK (reslock);
340#if !HAVE_PREADWRITE
341 X_LOCK (preadwritelock);
342#endif
343}
344
345static void etp_atfork_parent (void)
346{
347#if !HAVE_PREADWRITE
348 X_UNLOCK (preadwritelock);
349#endif
350 X_UNLOCK (reslock);
351 X_UNLOCK (reqlock);
352 X_UNLOCK (wrklock);
353}
354
355static void etp_atfork_child (void)
356{
357 ETP_REQ *prv;
358
359 while ((prv = reqq_shift (&req_queue)))
360 ETP_DESTROY (prv);
361
362 while ((prv = reqq_shift (&res_queue)))
363 ETP_DESTROY (prv);
364
365 while (wrk_first.next != &wrk_first)
366 {
367 etp_worker *wrk = wrk_first.next;
368
369 if (wrk->req)
370 ETP_DESTROY (wrk->req);
371
372 etp_worker_clear (wrk);
373 etp_worker_free (wrk);
374 }
375
376 started = 0;
377 idle = 0;
378 nreqs = 0;
379 nready = 0;
380 npending = 0;
381
382 etp_atfork_parent ();
383}
384
385static void 384static void
386etp_once_init (void)
387{
388 X_THREAD_ATFORK (etp_atfork_prepare, etp_atfork_parent, etp_atfork_child);
389}
390
391static int
392etp_init (void (*want_poll)(void), void (*done_poll)(void))
393{
394 static pthread_once_t doinit = PTHREAD_ONCE_INIT;
395
396 pthread_once (&doinit, etp_once_init);
397
398 want_poll_cb = want_poll;
399 done_poll_cb = done_poll;
400
401 return 0;
402}
403
404X_THREAD_PROC (etp_proc);
405
406static void etp_start_thread (void)
407{
408 etp_worker *wrk = calloc (1, sizeof (etp_worker));
409
410 /*TODO*/
411 assert (("unable to allocate worker thread data", wrk));
412
413 X_LOCK (wrklock);
414
415 if (thread_create (&wrk->tid, etp_proc, (void *)wrk))
416 {
417 wrk->prev = &wrk_first;
418 wrk->next = wrk_first.next;
419 wrk_first.next->prev = wrk;
420 wrk_first.next = wrk;
421 ++started;
422 }
423 else
424 free (wrk);
425
426 X_UNLOCK (wrklock);
427}
428
429static void etp_maybe_start_thread (void)
430{
431 if (expect_true (etp_nthreads () >= wanted))
432 return;
433
434 /* todo: maybe use idle here, but might be less exact */
435 if (expect_true (0 <= (int)etp_nthreads () + (int)etp_npending () - (int)etp_nreqs ()))
436 return;
437
438 etp_start_thread ();
439}
440
441static void etp_end_thread (void)
442{
443 eio_req *req = calloc (1, sizeof (eio_req));
444
445 req->type = -1;
446 req->pri = ETP_PRI_MAX - ETP_PRI_MIN;
447
448 X_LOCK (reqlock);
449 reqq_push (&req_queue, req);
450 X_COND_SIGNAL (reqwait);
451 X_UNLOCK (reqlock);
452
453 X_LOCK (wrklock);
454 --started;
455 X_UNLOCK (wrklock);
456}
457
458static int etp_poll (void)
459{
460 unsigned int maxreqs;
461 unsigned int maxtime;
462 struct timeval tv_start, tv_now;
463
464 X_LOCK (reslock);
465 maxreqs = max_poll_reqs;
466 maxtime = max_poll_time;
467 X_UNLOCK (reslock);
468
469 if (maxtime)
470 gettimeofday (&tv_start, 0);
471
472 for (;;)
473 {
474 ETP_REQ *req;
475
476 etp_maybe_start_thread ();
477
478 X_LOCK (reslock);
479 req = reqq_shift (&res_queue);
480
481 if (req)
482 {
483 --npending;
484
485 if (!res_queue.size && done_poll_cb)
486 done_poll_cb ();
487 }
488
489 X_UNLOCK (reslock);
490
491 if (!req)
492 return 0;
493
494 X_LOCK (reqlock);
495 --nreqs;
496 X_UNLOCK (reqlock);
497
498 if (expect_false (req->type == EIO_GROUP && req->size))
499 {
500 req->int1 = 1; /* mark request as delayed */
501 continue;
502 }
503 else
504 {
505 int res = ETP_FINISH (req);
506 if (expect_false (res))
507 return res;
508 }
509
510 if (expect_false (maxreqs && !--maxreqs))
511 break;
512
513 if (maxtime)
514 {
515 gettimeofday (&tv_now, 0);
516
517 if (tvdiff (&tv_start, &tv_now) >= maxtime)
518 break;
519 }
520 }
521
522 errno = EAGAIN;
523 return -1;
524}
525
526static void etp_cancel (ETP_REQ *req)
527{
528 X_LOCK (wrklock);
529 req->flags |= EIO_FLAG_CANCELLED;
530 X_UNLOCK (wrklock);
531
532 eio_grp_cancel (req);
533}
534
535static void etp_submit (ETP_REQ *req)
536{
537 req->pri -= ETP_PRI_MIN;
538
539 if (expect_false (req->pri < ETP_PRI_MIN - ETP_PRI_MIN)) req->pri = ETP_PRI_MIN - ETP_PRI_MIN;
540 if (expect_false (req->pri > ETP_PRI_MAX - ETP_PRI_MIN)) req->pri = ETP_PRI_MAX - ETP_PRI_MIN;
541
542 if (expect_false (req->type == EIO_GROUP))
543 {
544 /* I hope this is worth it :/ */
545 X_LOCK (reqlock);
546 ++nreqs;
547 X_UNLOCK (reqlock);
548
549 X_LOCK (reslock);
550
551 ++npending;
552
553 if (!reqq_push (&res_queue, req) && want_poll_cb)
554 want_poll_cb ();
555
556 X_UNLOCK (reslock);
557 }
558 else
559 {
560 X_LOCK (reqlock);
561 ++nreqs;
562 ++nready;
563 reqq_push (&req_queue, req);
564 X_COND_SIGNAL (reqwait);
565 X_UNLOCK (reqlock);
566
567 etp_maybe_start_thread ();
568 }
569}
570
571static void etp_set_max_poll_time (double nseconds)
572{
573 if (WORDACCESS_UNSAFE) X_LOCK (reslock);
574 max_poll_time = nseconds;
575 if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);
576}
577
578static void etp_set_max_poll_reqs (unsigned int maxreqs)
579{
580 if (WORDACCESS_UNSAFE) X_LOCK (reslock);
581 max_poll_reqs = maxreqs;
582 if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);
583}
584
585static void etp_set_max_idle (unsigned int nthreads)
586{
587 if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
588 max_idle = nthreads <= 0 ? 1 : nthreads;
589 if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
590}
591
592static void etp_set_min_parallel (unsigned int nthreads)
593{
594 if (wanted < nthreads)
595 wanted = nthreads;
596}
597
598static void etp_set_max_parallel (unsigned int nthreads)
599{
600 if (wanted > nthreads)
601 wanted = nthreads;
602
603 while (started > wanted)
604 etp_end_thread ();
605}
606
607/*****************************************************************************/
608
609static void grp_try_feed (eio_req *grp) 385grp_try_feed (eio_req *grp)
610{ 386{
611 while (grp->size < grp->int2 && !EIO_CANCELLED (grp)) 387 while (grp->size < grp->int2 && !EIO_CANCELLED (grp))
612 { 388 {
613 grp->flags &= ~EIO_FLAG_GROUPADD; 389 grp->flags &= ~EIO_FLAG_GROUPADD;
614 390
… …
621 break; 397 break;
622 } 398 }
623 } 399 }
624} 400}
625 401
402static int
626static int grp_dec (eio_req *grp) 403grp_dec (eio_req *grp)
627{ 404{
628 --grp->size; 405 --grp->size;
629 406
630 /* call feeder, if applicable */ 407 /* call feeder, if applicable */
631 grp_try_feed (grp); 408 grp_try_feed (grp);
… …
635 return eio_finish (grp); 412 return eio_finish (grp);
636 else 413 else
637 return 0; 414 return 0;
638} 415}
639 416
417static void
640void eio_destroy (eio_req *req) 418eio_destroy (eio_req *req)
641{ 419{
642 if ((req)->flags & EIO_FLAG_PTR1_FREE) free (req->ptr1); 420 if ((req)->flags & EIO_FLAG_PTR1_FREE) free (req->ptr1);
643 if ((req)->flags & EIO_FLAG_PTR2_FREE) free (req->ptr2); 421 if ((req)->flags & EIO_FLAG_PTR2_FREE) free (req->ptr2);
644 422
645 EIO_DESTROY (req); 423 EIO_DESTROY (req);
646} 424}
647 425
426static int
648static int eio_finish (eio_req *req) 427eio_finish (eio_req *req)
649{ 428{
650 int res = EIO_FINISH (req); 429 int res = EIO_FINISH (req);
651 430
652 if (req->grp) 431 if (req->grp)
653 { 432 {
… …
661 if (grp->grp_first == req) 440 if (grp->grp_first == req)
662 grp->grp_first = req->grp_next; 441 grp->grp_first = req->grp_next;
663 442
664 res2 = grp_dec (grp); 443 res2 = grp_dec (grp);
665 444
666 if (!res && res2) 445 if (!res)
667 res = res2; 446 res = res2;
668 } 447 }
669 448
670 eio_destroy (req); 449 eio_destroy (req);
671 450
672 return res; 451 return res;
673} 452}
674 453
454void
675void eio_grp_cancel (eio_req *grp) 455eio_grp_cancel (eio_req *grp)
676{ 456{
677 for (grp = grp->grp_first; grp; grp = grp->grp_next)
678 eio_cancel (grp); 457 etp_grp_cancel (grp);
679} 458}
680 459
460void
681void eio_cancel (eio_req *req) 461eio_cancel (eio_req *req)
682{ 462{
683 etp_cancel (req); 463 etp_cancel (req);
684} 464}
685 465
466void
686void eio_submit (eio_req *req) 467eio_submit (eio_req *req)
687{ 468{
688 etp_submit (req); 469 etp_submit (req);
689} 470}
690 471
691unsigned int eio_nreqs (void) 472unsigned int
473eio_nreqs (void)
692{ 474{
693 return etp_nreqs (); 475 return etp_nreqs ();
694} 476}
695 477
696unsigned int eio_nready (void) 478unsigned int
479eio_nready (void)
697{ 480{
698 return etp_nready (); 481 return etp_nready ();
699} 482}
700 483
701unsigned int eio_npending (void) 484unsigned int
485eio_npending (void)
702{ 486{
703 return etp_npending (); 487 return etp_npending ();
704} 488}
705 489
706unsigned int eio_nthreads (void) 490unsigned int ecb_cold
491eio_nthreads (void)
707{ 492{
708 return etp_nthreads (); 493 return etp_nthreads ();
709} 494}
710 495
496void ecb_cold
711void eio_set_max_poll_time (double nseconds) 497eio_set_max_poll_time (double nseconds)
712{ 498{
713 etp_set_max_poll_time (nseconds); 499 etp_set_max_poll_time (nseconds);
714} 500}
715 501
502void ecb_cold
716void eio_set_max_poll_reqs (unsigned int maxreqs) 503eio_set_max_poll_reqs (unsigned int maxreqs)
717{ 504{
718 etp_set_max_poll_reqs (maxreqs); 505 etp_set_max_poll_reqs (maxreqs);
719} 506}
720 507
508void ecb_cold
721void eio_set_max_idle (unsigned int nthreads) 509eio_set_max_idle (unsigned int nthreads)
722{ 510{
723 etp_set_max_idle (nthreads); 511 etp_set_max_idle (nthreads);
724} 512}
725 513
514void ecb_cold
515eio_set_idle_timeout (unsigned int seconds)
516{
517 etp_set_idle_timeout (seconds);
518}
519
520void ecb_cold
726void eio_set_min_parallel (unsigned int nthreads) 521eio_set_min_parallel (unsigned int nthreads)
727{ 522{
728 etp_set_min_parallel (nthreads); 523 etp_set_min_parallel (nthreads);
729} 524}
730 525
526void ecb_cold
731void eio_set_max_parallel (unsigned int nthreads) 527eio_set_max_parallel (unsigned int nthreads)
732{ 528{
733 etp_set_max_parallel (nthreads); 529 etp_set_max_parallel (nthreads);
734} 530}
735 531
736int eio_poll (void) 532int eio_poll (void)
… …
739} 535}
740 536
741/*****************************************************************************/ 537/*****************************************************************************/
742/* work around various missing functions */ 538/* work around various missing functions */
743 539
744#if !HAVE_PREADWRITE
745# undef pread
746# undef pwrite
747# define pread eio__pread
748# define pwrite eio__pwrite
749
750static ssize_t
751eio__pread (int fd, void *buf, size_t count, off_t offset)
752{
753 ssize_t res;
754 off_t ooffset;
755
756 X_LOCK (preadwritelock);
757 ooffset = lseek (fd, 0, SEEK_CUR);
758 lseek (fd, offset, SEEK_SET);
759 res = read (fd, buf, count);
760 lseek (fd, ooffset, SEEK_SET);
761 X_UNLOCK (preadwritelock);
762
763 return res;
764}
765
766static ssize_t
767eio__pwrite (int fd, void *buf, size_t count, off_t offset)
768{
769 ssize_t res;
770 off_t ooffset;
771
772 X_LOCK (preadwritelock);
773 ooffset = lseek (fd, 0, SEEK_CUR);
774 lseek (fd, offset, SEEK_SET);
775 res = write (fd, buf, count);
776 lseek (fd, ooffset, SEEK_SET);
777 X_UNLOCK (preadwritelock);
778
779 return res;
780}
781#endif
782
783#ifndef HAVE_FUTIMES 540#ifndef HAVE_UTIMES
784 541
785# undef utimes 542# undef utimes
786# undef futimes
787# define utimes(path,times) eio__utimes (path, times) 543# define utimes(path,times) eio__utimes (path, times)
788# define futimes(fd,times) eio__futimes (fd, times)
789 544
790static int 545static int
791eio__utimes (const char *filename, const struct timeval times[2]) 546eio__utimes (const char *filename, const struct timeval times[2])
792{ 547{
793 if (times) 548 if (times)
… …
801 } 556 }
802 else 557 else
803 return utime (filename, 0); 558 return utime (filename, 0);
804} 559}
805 560
561#endif
562
563#ifndef HAVE_FUTIMES
564
565# undef futimes
566# define futimes(fd,times) eio__futimes (fd, times)
567
568static int
806static int eio__futimes (int fd, const struct timeval tv[2]) 569eio__futimes (int fd, const struct timeval tv[2])
807{ 570{
808 errno = ENOSYS; 571 errno = ENOSYS;
809 return -1; 572 return -1;
810} 573}
811 574
… …
814#if !HAVE_FDATASYNC 577#if !HAVE_FDATASYNC
815# undef fdatasync 578# undef fdatasync
816# define fdatasync(fd) fsync (fd) 579# define fdatasync(fd) fsync (fd)
817#endif 580#endif
818 581
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
819/* sync_file_range always needs emulation */ 599/* sync_file_range always needs emulation */
820int 600static int
821eio__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)
822{ 602{
823#if HAVE_SYNC_FILE_RANGE 603#if HAVE_SYNC_FILE_RANGE
824 int res; 604 int res;
825 605
… …
838 if (!res || errno != ENOSYS) 618 if (!res || errno != ENOSYS)
839 return res; 619 return res;
840#endif 620#endif
841 621
842 /* 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
843 * call fdatasync, as thta matches the expectation of it's users best */ 623 * call fdatasync, as that matches the expectation of its users best */
844 return fdatasync (fd); 624 return fdatasync (fd);
625}
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
845} 635}
846 636
847#if !HAVE_READAHEAD 637#if !HAVE_READAHEAD
848# undef readahead 638# undef readahead
849# define readahead(fd,offset,count) eio__readahead (fd, offset, count, self) 639# define readahead(fd,offset,count) eio__readahead (fd, offset, count, self)
850 640
851static ssize_t 641static eio_ssize_t
852eio__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)
853{ 643{
854 size_t todo = count; 644 size_t todo = count;
855 dBUF; 645 dBUF;
856 646
… …
861 pread (fd, eio_buf, len, offset); 651 pread (fd, eio_buf, len, offset);
862 offset += len; 652 offset += len;
863 todo -= len; 653 todo -= len;
864 } 654 }
865 655
866 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 */
867 return count; 660 return 0;
868} 661}
869 662
870#endif 663#endif
871 664
872/* sendfile always needs emulation */ 665/* sendfile always needs emulation */
873static ssize_t 666static eio_ssize_t
874eio__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)
875{ 668{
669 eio_ssize_t written = 0;
876 ssize_t res; 670 eio_ssize_t res;
877 671
878 if (!count) 672 if (!count)
879 return 0; 673 return 0;
880 674
675 for (;;)
676 {
677#ifdef __APPLE__
678# undef HAVE_SENDFILE /* broken, as everything on os x */
679#endif
881#if HAVE_SENDFILE 680#if HAVE_SENDFILE
882# if __linux 681# if __linux
682 off_t soffset = offset;
883 res = sendfile (ofd, ifd, &offset, count); 683 res = sendfile (ofd, ifd, &soffset, count);
884 684
885# elif __freebsd 685# elif __FreeBSD__
886 /* 686 /*
887 * 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
888 * wasted on making it similar to other I/O functions. 688 * wasted on making it similar to other I/O functions.
889 */ 689 */
890 {
891 off_t sbytes; 690 off_t sbytes;
892 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0); 691 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
893 692
894 if (res < 0 && sbytes) 693 #if 0 /* according to the manpage, this is correct, but broken behaviour */
895 /* 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)
896 res = sbytes; 698 res = sbytes;
897 } 699 #endif
700
701 /* according to source inspection, this is correct, and useful behaviour */
702 if (sbytes)
703 res = sbytes;
704
705# elif defined __APPLE__
706 off_t sbytes = count;
707 res = sendfile (ifd, ofd, offset, &sbytes, 0, 0);
708
709 /* according to the manpage, sbytes is always valid */
710 if (sbytes)
711 res = sbytes;
898 712
899# elif __hpux 713# elif __hpux
900 res = sendfile (ofd, ifd, offset, count, 0, 0); 714 res = sendfile (ofd, ifd, offset, count, 0, 0);
901 715
902# elif __solaris 716# elif __solaris
903 {
904 struct sendfilevec vec; 717 struct sendfilevec vec;
905 size_t sbytes; 718 size_t sbytes;
906 719
907 vec.sfv_fd = ifd; 720 vec.sfv_fd = ifd;
908 vec.sfv_flag = 0; 721 vec.sfv_flag = 0;
909 vec.sfv_off = offset; 722 vec.sfv_off = offset;
910 vec.sfv_len = count; 723 vec.sfv_len = count;
911 724
912 res = sendfilev (ofd, &vec, 1, &sbytes); 725 res = sendfilev (ofd, &vec, 1, &sbytes);
913 726
914 if (res < 0 && sbytes) 727 if (res < 0 && sbytes)
915 res = sbytes; 728 res = sbytes;
916 }
917 729
918# endif 730# endif
731
732#elif defined (_WIN32) && 0
733 /* does not work, just for documentation of what would need to be done */
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 */
737 HANDLE h = TO_SOCKET (ifd);
738 SetFilePointer (h, offset, 0, FILE_BEGIN);
739 res = TransmitFile (TO_SOCKET (ofd), h, count, 0, 0, 0, 0);
740
919#else 741#else
920 res = -1; 742 res = EIO_ENOSYS ();
921 errno = ENOSYS;
922#endif 743#endif
923 744
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
924 if (res < 0 768 if (res < 0
925 && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK 769 && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
770 /* BSDs */
771#ifdef ENOTSUP /* sigh, if the steenking pile called openbsd would only try to at least compile posix code... */
772 || errno == ENOTSUP
773#endif
774#ifdef EOPNOTSUPP /* windows */
775 || errno == EOPNOTSUPP /* BSDs */
776#endif
926#if __solaris 777#if __solaris
927 || errno == EAFNOSUPPORT || errno == EPROTOTYPE 778 || errno == EAFNOSUPPORT || errno == EPROTOTYPE
928#endif 779#endif
929 ) 780 )
930 ) 781 )
… …
934 785
935 res = 0; 786 res = 0;
936 787
937 while (count) 788 while (count)
938 { 789 {
939 ssize_t cnt; 790 eio_ssize_t cnt;
940 791
941 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);
942 793
943 if (cnt <= 0) 794 if (cnt <= 0)
944 { 795 {
… …
956 807
957 offset += cnt; 808 offset += cnt;
958 res += cnt; 809 res += cnt;
959 count -= cnt; 810 count -= cnt;
960 } 811 }
812
813 FUBd;
961 } 814 }
962 815
963 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
1124}
1125
1126static signed char
1127eio_dent_cmp (const eio_dirent *a, const eio_dirent *b)
1128{
1129 return a->score - b->score ? a->score - b->score /* works because our signed char is always 0..100 */
1130 : a->inode < b->inode ? -1
1131 : a->inode > b->inode ? 1
1132 : 0;
1133}
1134
1135#define EIO_DENT_CMP(i,op,j) eio_dent_cmp (&i, &j) op 0
1136
1137#define EIO_SORT_CUTOFF 30 /* quite high, but performs well on many filesystems */
1138#define EIO_SORT_FAST 60 /* when to only use insertion sort */
1139
1140static void
1141eio_dent_radix_sort (eio_dirent *dents, int size, signed char score_bits, eio_ino_t inode_bits)
1142{
1143 unsigned char bits [9 + sizeof (eio_ino_t) * 8];
1144 unsigned char *bit = bits;
1145
1146 assert (CHAR_BIT == 8);
1147 assert (sizeof (eio_dirent) * 8 < 256);
1148 assert (offsetof (eio_dirent, inode)); /* we use bit #0 as sentinel */
1149 assert (offsetof (eio_dirent, score)); /* we use bit #0 as sentinel */
1150
1151 if (size <= EIO_SORT_FAST)
1152 return;
1153
1154 /* first prepare an array of bits to test in our radix sort */
1155 /* try to take endianness into account, as well as differences in eio_ino_t sizes */
1156 /* inode_bits must contain all inodes ORed together */
1157 /* which is used to skip bits that are 0 everywhere, which is very common */
1158 {
1159 eio_ino_t endianness;
1160 int i, j;
1161
1162 /* we store the byte offset of byte n into byte n of "endianness" */
1163 for (i = 0; i < sizeof (eio_ino_t); ++i)
1164 ((unsigned char *)&endianness)[i] = i;
1165
1166 *bit++ = 0;
1167
1168 for (i = 0; i < sizeof (eio_ino_t); ++i)
1169 {
1170 /* shifting off the byte offsets out of "endianness" */
1171 int offs = (offsetof (eio_dirent, inode) + (endianness & 0xff)) * 8;
1172 endianness >>= 8;
1173
1174 for (j = 0; j < 8; ++j)
1175 if (inode_bits & (((eio_ino_t)1) << (i * 8 + j)))
1176 *bit++ = offs + j;
1177 }
1178
1179 for (j = 0; j < 8; ++j)
1180 if (score_bits & (1 << j))
1181 *bit++ = offsetof (eio_dirent, score) * 8 + j;
1182 }
1183
1184 /* now actually do the sorting (a variant of MSD radix sort) */
1185 {
1186 eio_dirent *base_stk [9 + sizeof (eio_ino_t) * 8], *base;
1187 eio_dirent *end_stk [9 + sizeof (eio_ino_t) * 8], *end;
1188 unsigned char *bit_stk [9 + sizeof (eio_ino_t) * 8];
1189 int stk_idx = 0;
1190
1191 base_stk [stk_idx] = dents;
1192 end_stk [stk_idx] = dents + size;
1193 bit_stk [stk_idx] = bit - 1;
1194
1195 do
1196 {
1197 base = base_stk [stk_idx];
1198 end = end_stk [stk_idx];
1199 bit = bit_stk [stk_idx];
1200
1201 for (;;)
1202 {
1203 unsigned char O = *bit >> 3;
1204 unsigned char M = 1 << (*bit & 7);
1205
1206 eio_dirent *a = base;
1207 eio_dirent *b = end;
1208
1209 if (b - a < EIO_SORT_CUTOFF)
1210 break;
1211
1212 /* now bit-partition the array on the bit */
1213 /* this ugly asymmetric loop seems to perform much better than typical */
1214 /* partition algos found in the literature */
1215 do
1216 if (!(((unsigned char *)a)[O] & M))
1217 ++a;
1218 else if (!(((unsigned char *)--b)[O] & M))
1219 {
1220 eio_dirent tmp = *a; *a = *b; *b = tmp;
1221 ++a;
1222 }
1223 while (b > a);
1224
1225 /* next bit, or stop, if no bits left in this path */
1226 if (!*--bit)
1227 break;
1228
1229 base_stk [stk_idx] = a;
1230 end_stk [stk_idx] = end;
1231 bit_stk [stk_idx] = bit;
1232 ++stk_idx;
1233
1234 end = a;
1235 }
1236 }
1237 while (stk_idx--);
1238 }
1239}
1240
1241static void
1242eio_dent_insertion_sort (eio_dirent *dents, int size)
1243{
1244 /* first move the smallest element to the front, to act as a sentinel */
1245 {
1246 int i;
1247 eio_dirent *min = dents;
1248
1249 /* the radix pre-pass ensures that the minimum element is in the first EIO_SORT_CUTOFF + 1 elements */
1250 for (i = size > EIO_SORT_FAST ? EIO_SORT_CUTOFF + 1 : size; --i; )
1251 if (EIO_DENT_CMP (dents [i], <, *min))
1252 min = &dents [i];
1253
1254 /* swap elements 0 and j (minimum) */
1255 {
1256 eio_dirent tmp = *dents; *dents = *min; *min = tmp;
1257 }
1258 }
1259
1260 /* then do standard insertion sort, assuming that all elements are >= dents [0] */
1261 {
1262 eio_dirent *i, *j;
1263
1264 for (i = dents + 1; i < dents + size; ++i)
1265 {
1266 eio_dirent value = *i;
1267
1268 for (j = i - 1; EIO_DENT_CMP (*j, >, value); --j)
1269 j [1] = j [0];
1270
1271 j [1] = value;
1272 }
1273 }
1274}
1275
1276static void
1277eio_dent_sort (eio_dirent *dents, int size, signed char score_bits, eio_ino_t inode_bits)
1278{
1279 if (size <= 1)
1280 return; /* our insertion sort relies on size > 0 */
1281
1282 /* first we use a radix sort, but only for dirs >= EIO_SORT_FAST */
1283 /* and stop sorting when the partitions are <= EIO_SORT_CUTOFF */
1284 eio_dent_radix_sort (dents, size, score_bits, inode_bits);
1285
1286 /* use an insertion sort at the end, or for small arrays, */
1287 /* as insertion sort is more efficient for small partitions */
1288 eio_dent_insertion_sort (dents, size);
964} 1289}
965 1290
966/* read a full directory */ 1291/* read a full directory */
967static void 1292static void
968eio__scandir (eio_req *req, etp_worker *self) 1293eio__scandir (eio_req *req, etp_worker *self)
969{ 1294{
1295 char *name, *names;
1296 int namesalloc = 4096 - sizeof (void *) * 4;
1297 int namesoffs = 0;
1298 int flags = req->int1;
1299 eio_dirent *dents = 0;
1300 int dentalloc = 128;
1301 int dentoffs = 0;
1302 eio_ino_t inode_bits = 0;
1303#ifdef _WIN32
1304 HANDLE dirp;
1305 WIN32_FIND_DATA entp;
1306#else
970 DIR *dirp; 1307 DIR *dirp;
971 EIO_STRUCT_DIRENT *entp; 1308 EIO_STRUCT_DIRENT *entp;
972 char *name, *names; 1309#endif
973 int memlen = 4096;
974 int memofs = 0;
975 int res = 0;
976 1310
977 X_LOCK (wrklock); 1311 req->result = -1;
978 /* the corresponding closedir is in ETP_WORKER_CLEAR */
979 self->dirp = dirp = opendir (req->ptr1);
980 req->flags |= EIO_FLAG_PTR2_FREE;
981 req->ptr2 = names = malloc (memlen);
982 X_UNLOCK (wrklock);
983 1312
984 if (dirp && names) 1313 if (!(flags & EIO_READDIR_DENTS))
985 for (;;) 1314 flags &= ~(EIO_READDIR_DIRS_FIRST | EIO_READDIR_STAT_ORDER);
1315
1316#ifdef _WIN32
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)
986 { 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
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
1388 req->flags |= EIO_FLAG_PTR1_FREE | EIO_FLAG_PTR2_FREE;
1389 req->ptr1 = dents = flags ? malloc (dentalloc * sizeof (eio_dirent)) : 0;
1390 req->ptr2 = names = malloc (namesalloc);
1391
1392 if (!names || (flags && !dents))
1393 return;
1394
1395 for (;;)
1396 {
1397 int done;
1398
1399#ifdef _WIN32
1400 done = !dirp;
1401#else
987 errno = 0; 1402 errno = 0;
988 entp = readdir (dirp); 1403 entp = readdir (dirp);
1404 done = !entp;
1405#endif
989 1406
1407 if (done)
1408 {
1409#ifndef _WIN32
1410 int old_errno = errno;
1411 closedir (dirp);
1412 errno = old_errno;
1413
990 if (!entp) 1414 if (errno)
1415 break;
1416#endif
1417
1418 /* sort etc. */
1419 req->int1 = flags;
1420 req->result = dentoffs;
1421
1422 if (flags & EIO_READDIR_STAT_ORDER)
1423 eio_dent_sort (dents, dentoffs, flags & EIO_READDIR_DIRS_FIRST ? 7 : 0, inode_bits);
1424 else if (flags & EIO_READDIR_DIRS_FIRST)
1425 if (flags & EIO_READDIR_FOUND_UNKNOWN)
1426 eio_dent_sort (dents, dentoffs, 7, inode_bits); /* sort by score and inode */
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
991 break; 1451 break;
1452 }
992 1453
993 name = entp->d_name; 1454 /* now add the entry to our list(s) */
1455 name = D_NAME (entp);
994 1456
1457 /* skip . and .. entries */
995 if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2]))) 1458 if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
996 { 1459 {
997 int len = strlen (name) + 1; 1460 int len = D_NAMLEN (entp) + 1;
998 1461
999 res++; 1462 while (ecb_expect_false (namesoffs + len > namesalloc))
1000
1001 while (memofs + len > memlen)
1002 { 1463 {
1003 memlen *= 2; 1464 namesalloc *= 2;
1004 X_LOCK (wrklock);
1005 req->ptr2 = names = realloc (names, memlen); 1465 req->ptr2 = names = realloc (names, namesalloc);
1006 X_UNLOCK (wrklock);
1007 1466
1008 if (!names) 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))
1478 {
1479 dentalloc *= 2;
1480 req->ptr1 = dents = realloc (dents, dentalloc * sizeof (eio_dirent));
1481
1482 if (!dents)
1009 break; 1483 break;
1010 } 1484 }
1011 1485
1012 memcpy (names + memofs, name, len); 1486 ent = dents + dentoffs;
1013 memofs += len; 1487
1488 ent->nameofs = namesoffs; /* rather dirtily we store the offset in the pointer */
1489 ent->namelen = len - 1;
1490 ent->inode = D_INO (entp);
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)
1550 {
1551 if (*name == '.') /* leading dots are likely directories, and, in any case, rare */
1552 ent->score = 1;
1553 else if (!strchr (name, '.')) /* absence of dots indicate likely dirs */
1554 ent->score = len <= 2 ? 4 - len : len <= 4 ? 4 : len <= 7 ? 5 : 6; /* shorter == more likely dir, but avoid too many classes */
1555 }
1556 else if (ent->type == EIO_DT_DIR)
1557 ent->score = 0;
1558 }
1014 } 1559 }
1560
1561 namesoffs += len;
1562 ++dentoffs;
1015 } 1563 }
1016 1564
1017 if (errno) 1565 if (EIO_CANCELLED (req))
1018 res = -1; 1566 {
1567 errno = ECANCELED;
1568 break;
1569 }
1570
1571#ifdef _WIN32
1572 if (!FindNextFile (dirp, &entp))
1573 {
1574 FindClose (dirp);
1575 dirp = 0;
1576 }
1577#endif
1578 }
1579}
1580
1581/*****************************************************************************/
1582/* working directory stuff */
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. */
1586
1587#if !HAVE_AT
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)
1593{
1594 if (!wd || *path == '/')
1595 return path;
1596
1597 if (path [0] == '.' && !path [1])
1598 return wd->str;
1599
1019 1600 {
1020 req->result = res; 1601 int l1 = wd->len;
1021} 1602 int l2 = strlen (path);
1022 1603
1023#if !(_POSIX_MAPPED_FILES && _POSIX_SYNCHRONIZED_IO) 1604 char *res = etp_tmpbuf_get (tmpbuf, l1 + l2 + 2);
1024# undef msync
1025# define msync(a,b,c) ((errno = ENOSYS), -1)
1026#endif
1027 1605
1028int 1606 memcpy (res, wd->str, l1);
1029eio__mtouch (void *mem, size_t len, int flags) 1607 res [l1] = '/';
1030{ 1608 memcpy (res + l1 + 1, path, l2 + 1);
1031 intptr_t addr = (intptr_t)mem;
1032 intptr_t end = addr + len;
1033#ifdef PAGESIZE
1034 const intptr_t page = PAGESIZE;
1035#else
1036 static intptr_t page;
1037 1609
1038 if (!page) 1610 return res;
1039 page = sysconf (_SC_PAGESIZE); 1611 }
1040#endif 1612}
1041 1613
1042 addr &= ~(page - 1); /* assume page size is always a power of two */ 1614#endif
1043 1615
1044 if (addr < end) 1616static eio_wd
1045 if (flags) /* modify */ 1617eio__wd_open_sync (struct etp_tmpbuf *tmpbuf, eio_wd wd, const char *path)
1046 do { *((volatile sig_atomic_t *)addr) |= 0; } while ((addr += page) < len); 1618{
1047 else 1619 int fd;
1048 do { *((volatile sig_atomic_t *)addr) ; } while ((addr += page) < len); 1620 eio_wd res;
1621 int len = eio__realpath (tmpbuf, wd, path);
1049 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
1050 return 0; 1653 return wd;
1051} 1654}
1655
1656void
1657eio_wd_close_sync (eio_wd wd)
1658{
1659 if (wd != EIO_INVALID_WD && wd != EIO_CWD)
1660 {
1661 #if HAVE_AT
1662 close (wd->fd);
1663 #endif
1664 free (wd);
1665 }
1666}
1667
1668#if HAVE_AT
1669
1670/* they forgot these */
1671
1672static int
1673eio__truncateat (int dirfd, const char *path, off_t length)
1674{
1675 int fd = openat (dirfd, path, O_WRONLY | O_CLOEXEC);
1676 int res;
1677
1678 if (fd < 0)
1679 return fd;
1680
1681 res = ftruncate (fd, length);
1682 close (fd);
1683 return res;
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
1052 1702
1053/*****************************************************************************/ 1703/*****************************************************************************/
1054 1704
1055#define ALLOC(len) \ 1705#define ALLOC(len) \
1056 if (!req->ptr2) \ 1706 if (!req->ptr2) \
… …
1065 req->result = -1; \ 1715 req->result = -1; \
1066 break; \ 1716 break; \
1067 } \ 1717 } \
1068 } 1718 }
1069 1719
1720static void ecb_noinline ecb_cold
1721etp_proc_init (void)
1722{
1723#if HAVE_PRCTL_SET_NAME
1724 /* provide a more sensible "thread name" */
1725 char name[16 + 1];
1726 const int namelen = sizeof (name) - 1;
1727 int len;
1728
1729 prctl (PR_GET_NAME, (unsigned long)name, 0, 0, 0);
1730 name [namelen] = 0;
1731 len = strlen (name);
1732 strcpy (name + (len <= namelen - 4 ? len : namelen - 4), "/eio");
1733 prctl (PR_SET_NAME, (unsigned long)name, 0, 0, 0);
1734#endif
1735}
1736
1737/* TODO: move somehow to etp.c */
1070X_THREAD_PROC (etp_proc) 1738X_THREAD_PROC (etp_proc)
1071{ 1739{
1072 ETP_REQ *req; 1740 ETP_REQ *req;
1073 struct timespec ts; 1741 struct timespec ts;
1074 etp_worker *self = (etp_worker *)thr_arg; 1742 etp_worker *self = (etp_worker *)thr_arg;
1075 1743
1744 etp_proc_init ();
1745
1076 /* try to distribute timeouts somewhat randomly */ 1746 /* try to distribute timeouts somewhat evenly */
1077 ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL); 1747 ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL);
1078 1748
1079 for (;;) 1749 for (;;)
1080 { 1750 {
1751 ts.tv_sec = 0;
1752
1081 X_LOCK (reqlock); 1753 X_LOCK (reqlock);
1082 1754
1083 for (;;) 1755 for (;;)
1084 { 1756 {
1085 self->req = req = reqq_shift (&req_queue); 1757 req = reqq_shift (&req_queue);
1086 1758
1087 if (req) 1759 if (req)
1088 break; 1760 break;
1089 1761
1762 if (ts.tv_sec == 1) /* no request, but timeout detected, let's quit */
1763 {
1764 X_UNLOCK (reqlock);
1765 X_LOCK (wrklock);
1766 --started;
1767 X_UNLOCK (wrklock);
1768 goto quit;
1769 }
1770
1090 ++idle; 1771 ++idle;
1091 1772
1092 ts.tv_sec = time (0) + IDLE_TIMEOUT; 1773 if (idle <= max_idle)
1093 if (X_COND_TIMEDWAIT (reqwait, reqlock, ts) == ETIMEDOUT) 1774 /* we are allowed to idle, so do so without any timeout */
1775 X_COND_WAIT (reqwait, reqlock);
1776 else
1094 { 1777 {
1095 if (idle > max_idle) 1778 /* initialise timeout once */
1096 { 1779 if (!ts.tv_sec)
1097 --idle; 1780 ts.tv_sec = time (0) + idle_timeout;
1098 X_UNLOCK (reqlock);
1099 X_LOCK (wrklock);
1100 --started;
1101 X_UNLOCK (wrklock);
1102 goto quit;
1103 }
1104 1781
1105 /* we are allowed to idle, so do so without any timeout */
1106 X_COND_WAIT (reqwait, reqlock); 1782 if (X_COND_TIMEDWAIT (reqwait, reqlock, ts) == ETIMEDOUT)
1783 ts.tv_sec = 1; /* assuming this is not a value computed above.,.. */
1107 } 1784 }
1108 1785
1109 --idle; 1786 --idle;
1110 } 1787 }
1111 1788
1112 --nready; 1789 --nready;
1113 1790
1114 X_UNLOCK (reqlock); 1791 X_UNLOCK (reqlock);
1115 1792
1116 if (req->type < 0) 1793 if (req->type == ETP_TYPE_QUIT)
1117 goto quit; 1794 goto quit;
1118 1795
1119 if (!EIO_CANCELLED (req))
1120 ETP_EXECUTE (self, req); 1796 ETP_EXECUTE (self, req);
1121 1797
1122 X_LOCK (reslock); 1798 X_LOCK (reslock);
1123 1799
1124 ++npending; 1800 ++npending;
1125 1801
1126 if (!reqq_push (&res_queue, req) && want_poll_cb) 1802 if (!reqq_push (&res_queue, req) && want_poll_cb)
1127 want_poll_cb (); 1803 want_poll_cb ();
1128 1804
1129 self->req = 0;
1130 etp_worker_clear (self); 1805 etp_worker_clear (self);
1131 1806
1132 X_UNLOCK (reslock); 1807 X_UNLOCK (reslock);
1133 } 1808 }
1134 1809
1135quit: 1810quit:
1811 free (req);
1812
1136 X_LOCK (wrklock); 1813 X_LOCK (wrklock);
1137 etp_worker_free (self); 1814 etp_worker_free (self);
1138 X_UNLOCK (wrklock); 1815 X_UNLOCK (wrklock);
1139 1816
1140 return 0; 1817 return 0;
1141} 1818}
1142 1819
1143/*****************************************************************************/ 1820/*****************************************************************************/
1144 1821
1822int ecb_cold
1145int eio_init (void (*want_poll)(void), void (*done_poll)(void)) 1823eio_init (void (*want_poll)(void), void (*done_poll)(void))
1146{ 1824{
1147 return etp_init (want_poll, done_poll); 1825 return etp_init (want_poll, done_poll);
1148} 1826}
1149 1827
1828ecb_inline void
1150static void eio_api_destroy (eio_req *req) 1829eio_api_destroy (eio_req *req)
1151{ 1830{
1152 free (req); 1831 free (req);
1153} 1832}
1154 1833
1155#define REQ(rtype) \ 1834#define REQ(rtype) \
1156 eio_req *req; \ 1835 eio_req *req; \
1157 \ 1836 \
1158 req = (eio_req *)calloc (1, sizeof *req); \ 1837 req = (eio_req *)calloc (1, sizeof *req); \
1159 if (!req) \ 1838 if (!req) \
1160 return 0; \ 1839 return 0; \
… …
1174 { \ 1853 { \
1175 eio_api_destroy (req); \ 1854 eio_api_destroy (req); \
1176 return 0; \ 1855 return 0; \
1177 } 1856 }
1178 1857
1858#define SINGLEDOT(ptr) (0[(char *)(ptr)] == '.' && !1[(char *)(ptr)])
1859
1860static void
1179static void eio_execute (etp_worker *self, eio_req *req) 1861eio_execute (etp_worker *self, eio_req *req)
1180{ 1862{
1181 errno = 0; 1863#if HAVE_AT
1864 int dirfd;
1865#else
1866 const char *path;
1867#endif
1868
1869 if (ecb_expect_false (EIO_CANCELLED (req)))
1870 {
1871 req->result = -1;
1872 req->errorno = ECANCELED;
1873 return;
1874 }
1875
1876 if (ecb_expect_false (req->wd == EIO_INVALID_WD))
1877 {
1878 req->result = -1;
1879 req->errorno = ENOENT;
1880 return;
1881 }
1882
1883 if (req->type >= EIO_OPEN)
1884 {
1885 #if HAVE_AT
1886 dirfd = WD2FD (req->wd);
1887 #else
1888 path = wd_expand (&self->tmpbuf, req->wd, req->ptr1);
1889 #endif
1890 }
1182 1891
1183 switch (req->type) 1892 switch (req->type)
1184 { 1893 {
1894 case EIO_WD_OPEN: req->wd = eio__wd_open_sync (&self->tmpbuf, req->wd, req->ptr1);
1895 req->result = req->wd == EIO_INVALID_WD ? -1 : 0;
1896 break;
1897 case EIO_WD_CLOSE: req->result = 0;
1898 eio_wd_close_sync (req->wd); break;
1899
1900 case EIO_SEEK: eio__lseek (req); break;
1185 case EIO_READ: ALLOC (req->size); 1901 case EIO_READ: ALLOC (req->size);
1186 req->result = req->offs >= 0 1902 req->result = req->offs >= 0
1187 ? pread (req->int1, req->ptr2, req->size, req->offs) 1903 ? pread (req->int1, req->ptr2, req->size, req->offs)
1188 : read (req->int1, req->ptr2, req->size); break; 1904 : read (req->int1, req->ptr2, req->size); break;
1189 case EIO_WRITE: req->result = req->offs >= 0 1905 case EIO_WRITE: req->result = req->offs >= 0
1190 ? pwrite (req->int1, req->ptr2, req->size, req->offs) 1906 ? pwrite (req->int1, req->ptr2, req->size, req->offs)
1191 : write (req->int1, req->ptr2, req->size); break; 1907 : write (req->int1, req->ptr2, req->size); break;
1192 1908
1193 case EIO_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break; 1909 case EIO_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1194 case EIO_SENDFILE: req->result = eio__sendfile (req->int1, req->int2, req->offs, req->size, self); break; 1910 case EIO_SENDFILE: req->result = eio__sendfile (req->int1, req->int2, req->offs, req->size); break;
1911
1912#if HAVE_AT
1195 1913
1196 case EIO_STAT: ALLOC (sizeof (EIO_STRUCT_STAT)); 1914 case EIO_STAT: ALLOC (sizeof (EIO_STRUCT_STAT));
1197 req->result = stat (req->ptr1, (EIO_STRUCT_STAT *)req->ptr2); break; 1915 req->result = fstatat (dirfd, req->ptr1, (EIO_STRUCT_STAT *)req->ptr2, 0); break;
1198 case EIO_LSTAT: ALLOC (sizeof (EIO_STRUCT_STAT)); 1916 case EIO_LSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));
1199 req->result = lstat (req->ptr1, (EIO_STRUCT_STAT *)req->ptr2); break; 1917 req->result = fstatat (dirfd, req->ptr1, (EIO_STRUCT_STAT *)req->ptr2, AT_SYMLINK_NOFOLLOW); break;
1200 case EIO_FSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));
1201 req->result = fstat (req->int1, (EIO_STRUCT_STAT *)req->ptr2); break;
1202
1203 case EIO_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break; 1918 case EIO_CHOWN: req->result = fchownat (dirfd, req->ptr1, req->int2, req->int3, 0); break;
1204 case EIO_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
1205 case EIO_CHMOD: req->result = chmod (req->ptr1, (mode_t)req->int2); break; 1919 case EIO_CHMOD: req->result = fchmodat (dirfd, req->ptr1, (mode_t)req->int2, 0); break;
1206 case EIO_FCHMOD: req->result = fchmod (req->int1, (mode_t)req->int2); break;
1207 case EIO_TRUNCATE: req->result = truncate (req->ptr1, req->offs); break; 1920 case EIO_TRUNCATE: req->result = eio__truncateat (dirfd, req->ptr1, req->offs); break;
1208 case EIO_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break;
1209
1210 case EIO_OPEN: req->result = open (req->ptr1, req->int1, (mode_t)req->int2); break; 1921 case EIO_OPEN: req->result = openat (dirfd, req->ptr1, req->int1, (mode_t)req->int2); break;
1211 case EIO_CLOSE: req->result = close (req->int1); break; 1922
1212 case EIO_DUP2: req->result = dup2 (req->int1, req->int2); break;
1213 case EIO_UNLINK: req->result = unlink (req->ptr1); break; 1923 case EIO_UNLINK: req->result = unlinkat (dirfd, req->ptr1, 0); break;
1214 case EIO_RMDIR: req->result = rmdir (req->ptr1); break; 1924 case EIO_RMDIR: /* complications arise because "." cannot be removed, so we might have to expand */
1925 req->result = req->wd && SINGLEDOT (req->ptr1)
1926 ? rmdir (req->wd->str)
1927 : unlinkat (dirfd, req->ptr1, AT_REMOVEDIR); break;
1215 case EIO_MKDIR: req->result = mkdir (req->ptr1, (mode_t)req->int2); break; 1928 case EIO_MKDIR: req->result = mkdirat (dirfd, req->ptr1, (mode_t)req->int2); break;
1216 case EIO_RENAME: req->result = rename (req->ptr1, req->ptr2); break; 1929 case EIO_RENAME: /* complications arise because "." cannot be renamed, so we might have to expand */
1930 req->result = req->wd && SINGLEDOT (req->ptr1)
1931 ? rename (req->wd->str, req->ptr2)
1932 : renameat (dirfd, req->ptr1, WD2FD ((eio_wd)req->int3), req->ptr2); break;
1217 case EIO_LINK: req->result = link (req->ptr1, req->ptr2); break; 1933 case EIO_LINK: req->result = linkat (dirfd, req->ptr1, WD2FD ((eio_wd)req->int3), req->ptr2, 0); break;
1218 case EIO_SYMLINK: req->result = symlink (req->ptr1, req->ptr2); break; 1934 case EIO_SYMLINK: req->result = symlinkat (req->ptr1, dirfd, req->ptr2); break;
1219 case EIO_MKNOD: req->result = mknod (req->ptr1, (mode_t)req->int2, (dev_t)req->int3); break; 1935 case EIO_MKNOD: req->result = mknodat (dirfd, req->ptr1, (mode_t)req->int2, (dev_t)req->offs); break;
1220
1221 case EIO_READLINK: ALLOC (NAME_MAX); 1936 case EIO_READLINK: ALLOC (PATH_MAX);
1222 req->result = readlink (req->ptr1, req->ptr2, NAME_MAX); break; 1937 req->result = readlinkat (dirfd, req->ptr1, req->ptr2, PATH_MAX); break;
1223 1938 case EIO_STATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS));
1224 case EIO_SYNC: req->result = 0; sync (); break; 1939 req->result = eio__statvfsat (dirfd, req->ptr1, (EIO_STRUCT_STATVFS *)req->ptr2); break;
1225 case EIO_FSYNC: req->result = fsync (req->int1); break;
1226 case EIO_FDATASYNC: req->result = fdatasync (req->int1); break;
1227 case EIO_MSYNC: req->result = msync (req->ptr2, req->size, req->int1); break;
1228 case EIO_MTOUCH: req->result = eio__mtouch (req->ptr2, req->size, req->int1); break;
1229 case EIO_SYNC_FILE_RANGE: req->result = eio__sync_file_range (req->int1, req->offs, req->size, req->int2); break;
1230
1231 case EIO_READDIR: eio__scandir (req, self); break;
1232
1233 case EIO_BUSY: 1940 case EIO_UTIME:
1234#ifdef _WIN32 1941 case EIO_FUTIME:
1235 Sleep (req->nv1 * 1000.); 1942 {
1943 struct timespec ts[2];
1944 struct timespec *times;
1945
1946 if (req->nv1 != -1. || req->nv2 != -1.)
1947 {
1948 ts[0].tv_sec = req->nv1;
1949 ts[0].tv_nsec = (req->nv1 - ts[0].tv_sec) * 1e9;
1950 ts[1].tv_sec = req->nv2;
1951 ts[1].tv_nsec = (req->nv2 - ts[1].tv_sec) * 1e9;
1952
1953 times = ts;
1954 }
1955 else
1956 times = 0;
1957
1958 req->result = req->type == EIO_FUTIME
1959 ? futimens (req->int1, times)
1960 : utimensat (dirfd, req->ptr1, times, 0);
1961 }
1962 break;
1963
1236#else 1964#else
1237 {
1238 struct timeval tv;
1239 1965
1240 tv.tv_sec = req->nv1; 1966 case EIO_STAT: ALLOC (sizeof (EIO_STRUCT_STAT));
1241 tv.tv_usec = (req->nv1 - tv.tv_sec) * 1000000.; 1967 req->result = stat (path , (EIO_STRUCT_STAT *)req->ptr2); break;
1968 case EIO_LSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));
1969 req->result = lstat (path , (EIO_STRUCT_STAT *)req->ptr2); break;
1970 case EIO_CHOWN: req->result = chown (path , req->int2, req->int3); break;
1971 case EIO_CHMOD: req->result = chmod (path , (mode_t)req->int2); break;
1972 case EIO_TRUNCATE: req->result = truncate (path , req->offs); break;
1973 case EIO_OPEN: req->result = open (path , req->int1, (mode_t)req->int2); break;
1242 1974
1243 req->result = select (0, 0, 0, 0, &tv); 1975 case EIO_UNLINK: req->result = unlink (path ); break;
1244 } 1976 case EIO_RMDIR: req->result = rmdir (path ); break;
1245#endif 1977 case EIO_MKDIR: req->result = mkdir (path , (mode_t)req->int2); break;
1246 break; 1978 case EIO_RENAME: req->result = rename (path , req->ptr2); break;
1979 case EIO_LINK: req->result = link (path , req->ptr2); break;
1980 case EIO_SYMLINK: req->result = symlink (path , req->ptr2); break;
1981 case EIO_MKNOD: req->result = mknod (path , (mode_t)req->int2, (dev_t)req->offs); break;
1982 case EIO_READLINK: ALLOC (PATH_MAX);
1983 req->result = readlink (path, req->ptr2, PATH_MAX); break;
1984 case EIO_STATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS));
1985 req->result = statvfs (path , (EIO_STRUCT_STATVFS *)req->ptr2); break;
1247 1986
1248 case EIO_UTIME: 1987 case EIO_UTIME:
1249 case EIO_FUTIME: 1988 case EIO_FUTIME:
1250 { 1989 {
1251 struct timeval tv[2]; 1990 struct timeval tv[2];
1252 struct timeval *times; 1991 struct timeval *times;
1253 1992
1254 if (req->nv1 != -1. || req->nv2 != -1.) 1993 if (req->nv1 != -1. || req->nv2 != -1.)
1255 { 1994 {
1256 tv[0].tv_sec = req->nv1; 1995 tv[0].tv_sec = req->nv1;
1257 tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.; 1996 tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1e6;
1258 tv[1].tv_sec = req->nv2; 1997 tv[1].tv_sec = req->nv2;
1259 tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.; 1998 tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1e6;
1260 1999
1261 times = tv; 2000 times = tv;
1262 } 2001 }
1263 else 2002 else
1264 times = 0; 2003 times = 0;
1265
1266 2004
1267 req->result = req->type == EIO_FUTIME 2005 req->result = req->type == EIO_FUTIME
1268 ? futimes (req->int1, times) 2006 ? futimes (req->int1, times)
1269 : utimes (req->ptr1, times); 2007 : utimes (req->ptr1, times);
1270 } 2008 }
1271 break; 2009 break;
1272 2010
2011#endif
2012
2013 case EIO_REALPATH: if (0 <= (req->result = eio__realpath (&self->tmpbuf, req->wd, req->ptr1)))
2014 {
2015 ALLOC (req->result);
2016 memcpy (req->ptr2, self->tmpbuf.ptr, req->result);
2017 }
2018 break;
2019
2020 case EIO_FSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));
2021 req->result = fstat (req->int1, (EIO_STRUCT_STAT *)req->ptr2); break;
2022
2023 case EIO_FSTATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS));
2024 req->result = fstatvfs (req->int1, (EIO_STRUCT_STATVFS *)req->ptr2); break;
2025
2026 case EIO_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
2027 case EIO_FCHMOD: req->result = fchmod (req->int1, (mode_t)req->int2); break;
2028 case EIO_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break;
2029
2030 case EIO_CLOSE: req->result = close (req->int1); break;
2031 case EIO_DUP2: req->result = dup2 (req->int1, req->int2); break;
2032 case EIO_SYNC: req->result = 0; sync (); break;
2033 case EIO_FSYNC: req->result = fsync (req->int1); break;
2034 case EIO_FDATASYNC: req->result = fdatasync (req->int1); break;
2035 case EIO_SYNCFS: req->result = eio__syncfs (req->int1); break;
2036 case EIO_SYNC_FILE_RANGE: req->result = eio__sync_file_range (req->int1, req->offs, req->size, req->int2); break;
2037 case EIO_MSYNC: req->result = eio__msync (req->ptr2, req->size, req->int1); break;
2038 case EIO_MTOUCH: req->result = eio__mtouch (req); break;
2039 case EIO_MLOCK: req->result = eio__mlock (req->ptr2, req->size); break;
2040 case EIO_MLOCKALL: req->result = eio__mlockall (req->int1); break;
2041 case EIO_FALLOCATE: req->result = eio__fallocate (req->int1, req->int2, req->offs, req->size); break;
2042
2043 case EIO_READDIR: eio__scandir (req, self); break;
2044
2045 case EIO_BUSY:
2046#ifdef _WIN32
2047 Sleep (req->nv1 * 1e3);
2048#else
2049 {
2050 struct timeval tv;
2051
2052 tv.tv_sec = req->nv1;
2053 tv.tv_usec = (req->nv1 - tv.tv_sec) * 1e6;
2054
2055 req->result = select (0, 0, 0, 0, &tv);
2056 }
2057#endif
2058 break;
2059
1273 case EIO_GROUP: 2060 case EIO_GROUP:
1274 abort (); /* handled in eio_request */ 2061 abort (); /* handled in eio_request */
1275 2062
1276 case EIO_NOP: 2063 case EIO_NOP:
1277 req->result = 0; 2064 req->result = 0;
1278 break; 2065 break;
1279 2066
1280 case EIO_CUSTOM: 2067 case EIO_CUSTOM:
1281 ((void (*)(eio_req *))req->feed) (req); 2068 req->feed (req);
1282 break; 2069 break;
1283 2070
1284 default: 2071 default:
1285 req->result = -1; 2072 req->result = EIO_ENOSYS ();
1286 break; 2073 break;
1287 } 2074 }
1288 2075
1289 req->errorno = errno; 2076 req->errorno = errno;
1290} 2077}
1291 2078
1292#ifndef EIO_NO_WRAPPERS 2079#ifndef EIO_NO_WRAPPERS
1293 2080
2081eio_req *eio_wd_open (const char *path, int pri, eio_cb cb, void *data)
2082{
2083 REQ (EIO_WD_OPEN); PATH; SEND;
2084}
2085
2086eio_req *eio_wd_close (eio_wd wd, int pri, eio_cb cb, void *data)
2087{
2088 REQ (EIO_WD_CLOSE); req->wd = wd; SEND;
2089}
2090
1294eio_req *eio_nop (int pri, eio_cb cb, void *data) 2091eio_req *eio_nop (int pri, eio_cb cb, void *data)
1295{ 2092{
1296 REQ (EIO_NOP); SEND; 2093 REQ (EIO_NOP); SEND;
1297} 2094}
1298 2095
… …
1314eio_req *eio_msync (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data) 2111eio_req *eio_msync (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data)
1315{ 2112{
1316 REQ (EIO_MSYNC); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND; 2113 REQ (EIO_MSYNC); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND;
1317} 2114}
1318 2115
2116eio_req *eio_fdatasync (int fd, int pri, eio_cb cb, void *data)
2117{
2118 REQ (EIO_FDATASYNC); req->int1 = fd; SEND;
2119}
2120
2121eio_req *eio_syncfs (int fd, int pri, eio_cb cb, void *data)
2122{
2123 REQ (EIO_SYNCFS); req->int1 = fd; SEND;
2124}
2125
2126eio_req *eio_sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags, int pri, eio_cb cb, void *data)
2127{
2128 REQ (EIO_SYNC_FILE_RANGE); req->int1 = fd; req->offs = offset; req->size = nbytes; req->int2 = flags; SEND;
2129}
2130
1319eio_req *eio_mtouch (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data) 2131eio_req *eio_mtouch (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data)
1320{ 2132{
1321 REQ (EIO_MTOUCH); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND; 2133 REQ (EIO_MTOUCH); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND;
1322} 2134}
1323 2135
1324eio_req *eio_sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags, int pri, eio_cb cb, void *data) 2136eio_req *eio_mlock (void *addr, size_t length, int pri, eio_cb cb, void *data)
1325{ 2137{
1326 REQ (EIO_SYNC_FILE_RANGE); req->int1 = fd; req->offs = offset; req->size = nbytes; req->int2 = flags; SEND; 2138 REQ (EIO_MLOCK); req->ptr2 = addr; req->size = length; SEND;
1327} 2139}
1328 2140
1329eio_req *eio_fdatasync (int fd, int pri, eio_cb cb, void *data) 2141eio_req *eio_mlockall (int flags, int pri, eio_cb cb, void *data)
1330{ 2142{
1331 REQ (EIO_FDATASYNC); req->int1 = fd; SEND; 2143 REQ (EIO_MLOCKALL); req->int1 = flags; SEND;
2144}
2145
2146eio_req *eio_fallocate (int fd, int mode, off_t offset, size_t len, int pri, eio_cb cb, void *data)
2147{
2148 REQ (EIO_FALLOCATE); req->int1 = fd; req->int2 = mode; req->offs = offset; req->size = len; SEND;
1332} 2149}
1333 2150
1334eio_req *eio_close (int fd, int pri, eio_cb cb, void *data) 2151eio_req *eio_close (int fd, int pri, eio_cb cb, void *data)
1335{ 2152{
1336 REQ (EIO_CLOSE); req->int1 = fd; SEND; 2153 REQ (EIO_CLOSE); req->int1 = fd; SEND;
… …
1339eio_req *eio_readahead (int fd, off_t offset, size_t length, int pri, eio_cb cb, void *data) 2156eio_req *eio_readahead (int fd, off_t offset, size_t length, int pri, eio_cb cb, void *data)
1340{ 2157{
1341 REQ (EIO_READAHEAD); req->int1 = fd; req->offs = offset; req->size = length; SEND; 2158 REQ (EIO_READAHEAD); req->int1 = fd; req->offs = offset; req->size = length; SEND;
1342} 2159}
1343 2160
2161eio_req *eio_seek (int fd, off_t offset, int whence, int pri, eio_cb cb, void *data)
2162{
2163 REQ (EIO_SEEK); req->int1 = fd; req->offs = offset; req->int2 = whence; SEND;
2164}
2165
1344eio_req *eio_read (int fd, void *buf, size_t length, off_t offset, int pri, eio_cb cb, void *data) 2166eio_req *eio_read (int fd, void *buf, size_t length, off_t offset, int pri, eio_cb cb, void *data)
1345{ 2167{
1346 REQ (EIO_READ); req->int1 = fd; req->offs = offset; req->size = length; req->ptr2 = buf; SEND; 2168 REQ (EIO_READ); req->int1 = fd; req->offs = offset; req->size = length; req->ptr2 = buf; SEND;
1347} 2169}
1348 2170
… …
1354eio_req *eio_fstat (int fd, int pri, eio_cb cb, void *data) 2176eio_req *eio_fstat (int fd, int pri, eio_cb cb, void *data)
1355{ 2177{
1356 REQ (EIO_FSTAT); req->int1 = fd; SEND; 2178 REQ (EIO_FSTAT); req->int1 = fd; SEND;
1357} 2179}
1358 2180
2181eio_req *eio_fstatvfs (int fd, int pri, eio_cb cb, void *data)
2182{
2183 REQ (EIO_FSTATVFS); req->int1 = fd; SEND;
2184}
2185
1359eio_req *eio_futime (int fd, double atime, double mtime, int pri, eio_cb cb, void *data) 2186eio_req *eio_futime (int fd, double atime, double mtime, int pri, eio_cb cb, void *data)
1360{ 2187{
1361 REQ (EIO_FUTIME); req->int1 = fd; req->nv1 = atime; req->nv2 = mtime; SEND; 2188 REQ (EIO_FUTIME); req->int1 = fd; req->nv1 = atime; req->nv2 = mtime; SEND;
1362} 2189}
1363 2190
… …
1369eio_req *eio_fchmod (int fd, mode_t mode, int pri, eio_cb cb, void *data) 2196eio_req *eio_fchmod (int fd, mode_t mode, int pri, eio_cb cb, void *data)
1370{ 2197{
1371 REQ (EIO_FCHMOD); req->int1 = fd; req->int2 = (long)mode; SEND; 2198 REQ (EIO_FCHMOD); req->int1 = fd; req->int2 = (long)mode; SEND;
1372} 2199}
1373 2200
1374eio_req *eio_fchown (int fd, uid_t uid, gid_t gid, int pri, eio_cb cb, void *data) 2201eio_req *eio_fchown (int fd, eio_uid_t uid, eio_gid_t gid, int pri, eio_cb cb, void *data)
1375{ 2202{
1376 REQ (EIO_FCHOWN); req->int1 = fd; req->int2 = (long)uid; req->int3 = (long)gid; SEND; 2203 REQ (EIO_FCHOWN); req->int1 = fd; req->int2 = (long)uid; req->int3 = (long)gid; SEND;
1377} 2204}
1378 2205
1379eio_req *eio_dup2 (int fd, int fd2, int pri, eio_cb cb, void *data) 2206eio_req *eio_dup2 (int fd, int fd2, int pri, eio_cb cb, void *data)
… …
1399eio_req *eio_truncate (const char *path, off_t offset, int pri, eio_cb cb, void *data) 2226eio_req *eio_truncate (const char *path, off_t offset, int pri, eio_cb cb, void *data)
1400{ 2227{
1401 REQ (EIO_TRUNCATE); PATH; req->offs = offset; SEND; 2228 REQ (EIO_TRUNCATE); PATH; req->offs = offset; SEND;
1402} 2229}
1403 2230
1404eio_req *eio_chown (const char *path, uid_t uid, gid_t gid, int pri, eio_cb cb, void *data) 2231eio_req *eio_chown (const char *path, eio_uid_t uid, eio_gid_t gid, int pri, eio_cb cb, void *data)
1405{ 2232{
1406 REQ (EIO_CHOWN); PATH; req->int2 = (long)uid; req->int3 = (long)gid; SEND; 2233 REQ (EIO_CHOWN); PATH; req->int2 = (long)uid; req->int3 = (long)gid; SEND;
1407} 2234}
1408 2235
1409eio_req *eio_chmod (const char *path, mode_t mode, int pri, eio_cb cb, void *data) 2236eio_req *eio_chmod (const char *path, mode_t mode, int pri, eio_cb cb, void *data)
… …
1425eio_req *eio_readlink (const char *path, int pri, eio_cb cb, void *data) 2252eio_req *eio_readlink (const char *path, int pri, eio_cb cb, void *data)
1426{ 2253{
1427 return eio__1path (EIO_READLINK, path, pri, cb, data); 2254 return eio__1path (EIO_READLINK, path, pri, cb, data);
1428} 2255}
1429 2256
2257eio_req *eio_realpath (const char *path, int pri, eio_cb cb, void *data)
2258{
2259 return eio__1path (EIO_REALPATH, path, pri, cb, data);
2260}
2261
1430eio_req *eio_stat (const char *path, int pri, eio_cb cb, void *data) 2262eio_req *eio_stat (const char *path, int pri, eio_cb cb, void *data)
1431{ 2263{
1432 return eio__1path (EIO_STAT, path, pri, cb, data); 2264 return eio__1path (EIO_STAT, path, pri, cb, data);
1433} 2265}
1434 2266
1435eio_req *eio_lstat (const char *path, int pri, eio_cb cb, void *data) 2267eio_req *eio_lstat (const char *path, int pri, eio_cb cb, void *data)
1436{ 2268{
1437 return eio__1path (EIO_LSTAT, path, pri, cb, data); 2269 return eio__1path (EIO_LSTAT, path, pri, cb, data);
1438} 2270}
1439 2271
2272eio_req *eio_statvfs (const char *path, int pri, eio_cb cb, void *data)
2273{
2274 return eio__1path (EIO_STATVFS, path, pri, cb, data);
2275}
2276
1440eio_req *eio_unlink (const char *path, int pri, eio_cb cb, void *data) 2277eio_req *eio_unlink (const char *path, int pri, eio_cb cb, void *data)
1441{ 2278{
1442 return eio__1path (EIO_UNLINK, path, pri, cb, data); 2279 return eio__1path (EIO_UNLINK, path, pri, cb, data);
1443} 2280}
1444 2281
1445eio_req *eio_rmdir (const char *path, int pri, eio_cb cb, void *data) 2282eio_req *eio_rmdir (const char *path, int pri, eio_cb cb, void *data)
1446{ 2283{
1447 return eio__1path (EIO_RMDIR, path, pri, cb, data); 2284 return eio__1path (EIO_RMDIR, path, pri, cb, data);
1448} 2285}
1449 2286
1450eio_req *eio_readdir (const char *path, int pri, eio_cb cb, void *data) 2287eio_req *eio_readdir (const char *path, int flags, int pri, eio_cb cb, void *data)
1451{ 2288{
1452 return eio__1path (EIO_READDIR, path, pri, cb, data); 2289 REQ (EIO_READDIR); PATH; req->int1 = flags; SEND;
1453} 2290}
1454 2291
1455eio_req *eio_mknod (const char *path, mode_t mode, dev_t dev, int pri, eio_cb cb, void *data) 2292eio_req *eio_mknod (const char *path, mode_t mode, dev_t dev, int pri, eio_cb cb, void *data)
1456{ 2293{
1457 REQ (EIO_MKNOD); PATH; req->int2 = (long)mode; req->int3 = (long)dev; SEND; 2294 REQ (EIO_MKNOD); PATH; req->int2 = (long)mode; req->offs = (off_t)dev; SEND;
1458} 2295}
1459 2296
1460static eio_req * 2297static eio_req *
1461eio__2path (int type, const char *path, const char *new_path, int pri, eio_cb cb, void *data) 2298eio__2path (int type, const char *path, const char *new_path, int pri, eio_cb cb, void *data)
1462{ 2299{
… …
1486eio_req *eio_rename (const char *path, const char *new_path, int pri, eio_cb cb, void *data) 2323eio_req *eio_rename (const char *path, const char *new_path, int pri, eio_cb cb, void *data)
1487{ 2324{
1488 return eio__2path (EIO_RENAME, path, new_path, pri, cb, data); 2325 return eio__2path (EIO_RENAME, path, new_path, pri, cb, data);
1489} 2326}
1490 2327
1491eio_req *eio_custom (eio_cb execute, int pri, eio_cb cb, void *data) 2328eio_req *eio_custom (void (*execute)(eio_req *), int pri, eio_cb cb, void *data)
1492{ 2329{
1493 REQ (EIO_CUSTOM); req->feed = (void (*)(eio_req *))execute; SEND; 2330 REQ (EIO_CUSTOM); req->feed = execute; SEND;
1494} 2331}
1495 2332
1496#endif 2333#endif
1497 2334
1498eio_req *eio_grp (eio_cb cb, void *data) 2335eio_req *eio_grp (eio_cb cb, void *data)
… …
1507#undef SEND 2344#undef SEND
1508 2345
1509/*****************************************************************************/ 2346/*****************************************************************************/
1510/* grp functions */ 2347/* grp functions */
1511 2348
2349void
1512void eio_grp_feed (eio_req *grp, void (*feed)(eio_req *req), int limit) 2350eio_grp_feed (eio_req *grp, void (*feed)(eio_req *req), int limit)
1513{ 2351{
1514 grp->int2 = limit; 2352 grp->int2 = limit;
1515 grp->feed = feed; 2353 grp->feed = feed;
1516 2354
1517 grp_try_feed (grp); 2355 grp_try_feed (grp);
1518} 2356}
1519 2357
2358void
1520void eio_grp_limit (eio_req *grp, int limit) 2359eio_grp_limit (eio_req *grp, int limit)
1521{ 2360{
1522 grp->int2 = limit; 2361 grp->int2 = limit;
1523 2362
1524 grp_try_feed (grp); 2363 grp_try_feed (grp);
1525} 2364}
1526 2365
2366void
1527void eio_grp_add (eio_req *grp, eio_req *req) 2367eio_grp_add (eio_req *grp, eio_req *req)
1528{ 2368{
1529 assert (("cannot add requests to IO::AIO::GRP after the group finished", grp->int1 != 2)); 2369 assert (("cannot add requests to IO::AIO::GRP after the group finished", grp->int1 != 2));
1530 2370
1531 grp->flags |= EIO_FLAG_GROUPADD; 2371 grp->flags |= EIO_FLAG_GROUPADD;
1532 2372
… …
1543} 2383}
1544 2384
1545/*****************************************************************************/ 2385/*****************************************************************************/
1546/* misc garbage */ 2386/* misc garbage */
1547 2387
2388eio_ssize_t
1548ssize_t eio_sendfile_sync (int ofd, int ifd, off_t offset, size_t count) 2389eio_sendfile_sync (int ofd, int ifd, off_t offset, size_t count)
1549{ 2390{
1550 etp_worker wrk;
1551
1552 wrk.dbuf = 0;
1553
1554 eio__sendfile (ofd, ifd, offset, count, &wrk); 2391 return eio__sendfile (ofd, ifd, offset, count);
1555
1556 if (wrk.dbuf)
1557 free (wrk.dbuf);
1558} 2392}
1559 2393

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