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Comparing libeio/eio.c (file contents):
Revision 1.8 by root, Sun May 11 20:08:37 2008 UTC vs.
Revision 1.100 by root, Tue Jul 26 11:32:16 2011 UTC

1/*
2 * libeio implementation
3 *
4 * Copyright (c) 2007,2008,2009,2010,2011 Marc Alexander Lehmann <libeio@schmorp.de>
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met:
9 *
10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer.
12 *
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 *
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-
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-
21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
22 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
23 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
24 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
25 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
26 * OF THE POSSIBILITY OF SUCH DAMAGE.
27 *
28 * Alternatively, the contents of this file may be used under the terms of
29 * the GNU General Public License ("GPL") version 2 or any later version,
30 * in which case the provisions of the GPL are applicable instead of
31 * the above. If you wish to allow the use of your version of this file
32 * only under the terms of the GPL and not to allow others to use your
33 * version of this file under the BSD license, indicate your decision
34 * by deleting the provisions above and replace them with the notice
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
37 * either the BSD or the GPL.
38 */
39
40#ifndef _WIN32
41# include "config.h"
42#endif
43
1#include "eio.h" 44#include "eio.h"
45#include "ecb.h"
46
47#ifdef EIO_STACKSIZE
48# define XTHREAD_STACKSIZE EIO_STACKSIZE
49#endif
2#include "xthread.h" 50#include "xthread.h"
3 51
4#include <errno.h> 52#include <errno.h>
5#include <stddef.h> 53#include <stddef.h>
6#include <stdlib.h> 54#include <stdlib.h>
… …
10#include <sys/stat.h> 58#include <sys/stat.h>
11#include <limits.h> 59#include <limits.h>
12#include <fcntl.h> 60#include <fcntl.h>
13#include <assert.h> 61#include <assert.h>
14 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
15#ifndef EIO_FINISH 82#ifndef EIO_FINISH
16# 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
17#endif 84#endif
18 85
19#ifndef EIO_DESTROY 86#ifndef EIO_DESTROY
… …
22 89
23#ifndef EIO_FEED 90#ifndef EIO_FEED
24# 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)
25#endif 92#endif
26 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
27#ifdef _WIN32 105#ifdef _WIN32
28 106
29 /*doh*/ 107 #undef PAGESIZE
108 #define PAGESIZE 4096 /* GetSystemInfo? */
109
110 /* TODO: look at how perl does stat (non-sloppy), unlink (ro-files), utime, link */
111
112 #ifdef EIO_STRUCT_STATI64
113 /* look at perl's non-sloppy stat */
114 #define stat(path,buf) _stati64 (path,buf)
115 #define fstat(fd,buf) _fstati64 (fd,buf)
116 #endif
117 #define lstat(path,buf) stat (path,buf)
118 #define fsync(fd) (FlushFileBuffers ((HANDLE)EIO_FD_TO_WIN32_HANDLE (fd)) ? 0 : EIO_ERRNO (EBADF, -1))
119 #define mkdir(path,mode) _mkdir (path)
120 #define link(old,neu) (CreateHardLink (neu, old, 0) ? 0 : EIO_ERRNO (ENOENT, -1))
121
122 #define chmod(path,mode) _chmod (path, mode)
123 #define dup(fd) _dup (fd)
124 #define dup2(fd1,fd2) _dup2 (fd1, fd2)
125
126 #define fchmod(fd,mode) EIO_ENOSYS ()
127 #define chown(path,uid,gid) EIO_ENOSYS ()
128 #define fchown(fd,uid,gid) EIO_ENOSYS ()
129 #define truncate(path,offs) EIO_ENOSYS () /* far-miss: SetEndOfFile */
130 #define ftruncate(fd,offs) EIO_ENOSYS () /* near-miss: SetEndOfFile */
131 #define mknod(path,mode,dev) EIO_ENOSYS ()
132 #define sync() EIO_ENOSYS ()
133 #define readlink(path,buf,s) EIO_ENOSYS ()
134 #define statvfs(path,buf) EIO_ENOSYS ()
135 #define fstatvfs(fd,buf) EIO_ENOSYS ()
136
137 /* rename() uses MoveFile, which fails to overwrite */
138 #define rename(old,neu) eio__rename (old, neu)
139
140 static int
141 eio__rename (const char *old, const char *neu)
142 {
143 if (MoveFileEx (old, neu, MOVEFILE_REPLACE_EXISTING))
144 return 0;
145
146 /* should steal _dosmaperr */
147 switch (GetLastError ())
148 {
149 case ERROR_FILE_NOT_FOUND:
150 case ERROR_PATH_NOT_FOUND:
151 case ERROR_INVALID_DRIVE:
152 case ERROR_NO_MORE_FILES:
153 case ERROR_BAD_NETPATH:
154 case ERROR_BAD_NET_NAME:
155 case ERROR_BAD_PATHNAME:
156 case ERROR_FILENAME_EXCED_RANGE:
157 errno = ENOENT;
158 break;
159
160 default:
161 errno = EACCES;
162 break;
163 }
164
165 return -1;
166 }
167
168 /* we could even stat and see if it exists */
169 static int
170 symlink (const char *old, const char *neu)
171 {
172 #if WINVER >= 0x0600
173 if (CreateSymbolicLink (neu, old, 1))
174 return 0;
175
176 if (CreateSymbolicLink (neu, old, 0))
177 return 0;
178 #endif
179
180 return EIO_ERRNO (ENOENT, -1);
181 }
182
183 /* POSIX API only */
184 #define CreateHardLink(neu,old,flags) 0
185 #define CreateSymbolicLink(neu,old,flags) 0
186
187 struct statvfs
188 {
189 int dummy;
190 };
191
192 #define DT_DIR EIO_DT_DIR
193 #define DT_REG EIO_DT_REG
194 #define D_NAME(entp) entp.cFileName
195 #define D_TYPE(entp) (entp.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY ? DT_DIR : DT_REG)
30 196
31#else 197#else
32 198
33# include "config.h"
34# include <sys/time.h> 199 #include <sys/time.h>
35# include <sys/select.h> 200 #include <sys/select.h>
201 #include <sys/statvfs.h>
36# include <unistd.h> 202 #include <unistd.h>
203 #include <signal.h>
204 #include <dirent.h>
205
206 #if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
207 #include <sys/mman.h>
208 #endif
209
210 #define D_NAME(entp) entp->d_name
211
212 /* POSIX_SOURCE is useless on bsd's, and XOPEN_SOURCE is unreliable there, too */
213 #if __FreeBSD__ || defined __NetBSD__ || defined __OpenBSD__
214 #define _DIRENT_HAVE_D_TYPE /* sigh */
215 #define D_INO(de) (de)->d_fileno
216 #define D_NAMLEN(de) (de)->d_namlen
217 #elif __linux || defined d_ino || _XOPEN_SOURCE >= 600
218 #define D_INO(de) (de)->d_ino
219 #endif
220
221 #ifdef _D_EXACT_NAMLEN
222 #undef D_NAMLEN
223 #define D_NAMLEN(de) _D_EXACT_NAMLEN (de)
224 #endif
225
226 #ifdef _DIRENT_HAVE_D_TYPE
227 #define D_TYPE(de) (de)->d_type
228 #endif
229
230 #ifndef EIO_STRUCT_DIRENT
231 #define EIO_STRUCT_DIRENT struct dirent
232 #endif
233
234#endif
235
236#if HAVE_UTIMES
37# include <utime.h> 237# include <utime.h>
38# include <signal.h>
39# include <dirent.h>
40
41# ifndef EIO_STRUCT_DIRENT
42# define EIO_STRUCT_DIRENT struct dirent
43# endif 238#endif
44 239
45#endif 240#if HAVE_SYS_SYSCALL_H
46 241# include <sys/syscall.h>
47# ifndef EIO_STRUCT_STAT
48# define EIO_STRUCT_STAT struct stat
49# endif 242#endif
243
244#if HAVE_SYS_PRCTL_H
245# include <sys/prctl.h>
246#endif
50 247
51#if HAVE_SENDFILE 248#if HAVE_SENDFILE
52# if __linux 249# if __linux
53# include <sys/sendfile.h> 250# include <sys/sendfile.h>
54# elif __freebsd 251# elif __FreeBSD__ || defined __APPLE__
55# include <sys/socket.h> 252# include <sys/socket.h>
56# include <sys/uio.h> 253# include <sys/uio.h>
57# elif __hpux 254# elif __hpux
58# include <sys/socket.h> 255# include <sys/socket.h>
59# elif __solaris /* not yet */ 256# elif __solaris
60# include <sys/sendfile.h> 257# include <sys/sendfile.h>
61# else 258# else
62# error sendfile support requested but not available 259# error sendfile support requested but not available
63# endif 260# endif
64#endif 261#endif
65 262
66/* number of seconds after which an idle threads exit */ 263#ifndef D_TYPE
67#define IDLE_TIMEOUT 10 264# define D_TYPE(de) 0
265#endif
266#ifndef D_INO
267# define D_INO(de) 0
268#endif
269#ifndef D_NAMLEN
270# define D_NAMLEN(entp) strlen (D_NAME (entp))
271#endif
68 272
69/* used for struct dirent, AIX doesn't provide it */ 273/* used for struct dirent, AIX doesn't provide it */
70#ifndef NAME_MAX 274#ifndef NAME_MAX
71# define NAME_MAX 4096 275# define NAME_MAX 4096
72#endif 276#endif
73 277
278/* used for readlink etc. */
279#ifndef PATH_MAX
280# define PATH_MAX 4096
281#endif
282
74/* buffer size for various temporary buffers */ 283/* buffer size for various temporary buffers */
75#define EIO_BUFSIZE 65536 284#define EIO_BUFSIZE 65536
76 285
77#define dBUF \ 286#define dBUF \
78 char *eio_buf; \
79 X_LOCK (wrklock); \
80 self->dbuf = eio_buf = malloc (EIO_BUFSIZE); \ 287 char *eio_buf = malloc (EIO_BUFSIZE); \
81 X_UNLOCK (wrklock); \ 288 errno = ENOMEM; \
82 if (!eio_buf) \ 289 if (!eio_buf) \
83 return -1; 290 return -1
291
292#define FUBd \
293 free (eio_buf)
84 294
85#define EIO_TICKS ((1000000 + 1023) >> 10) 295#define EIO_TICKS ((1000000 + 1023) >> 10)
296
297#define ETP_PRI_MIN EIO_PRI_MIN
298#define ETP_PRI_MAX EIO_PRI_MAX
299
300struct etp_worker;
301
302#define ETP_REQ eio_req
303#define ETP_DESTROY(req) eio_destroy (req)
304static int eio_finish (eio_req *req);
305#define ETP_FINISH(req) eio_finish (req)
306static void eio_execute (struct etp_worker *self, eio_req *req);
307#define ETP_EXECUTE(wrk,req) eio_execute (wrk,req)
308
309/*****************************************************************************/
310
311#define ETP_NUM_PRI (ETP_PRI_MAX - ETP_PRI_MIN + 1)
312
313/* calculate time difference in ~1/EIO_TICKS of a second */
314ecb_inline int
315tvdiff (struct timeval *tv1, struct timeval *tv2)
316{
317 return (tv2->tv_sec - tv1->tv_sec ) * EIO_TICKS
318 + ((tv2->tv_usec - tv1->tv_usec) >> 10);
319}
320
321static unsigned int started, idle, wanted = 4;
86 322
87static void (*want_poll_cb) (void); 323static void (*want_poll_cb) (void);
88static void (*done_poll_cb) (void); 324static void (*done_poll_cb) (void);
89 325
90static unsigned int max_poll_time = 0; 326static unsigned int max_poll_time; /* reslock */
91static unsigned int max_poll_reqs = 0; 327static unsigned int max_poll_reqs; /* reslock */
92 328
93/* calculcate time difference in ~1/EIO_TICKS of a second */ 329static volatile unsigned int nreqs; /* reqlock */
94static int tvdiff (struct timeval *tv1, struct timeval *tv2) 330static volatile unsigned int nready; /* reqlock */
95{ 331static volatile unsigned int npending; /* reqlock */
96 return (tv2->tv_sec - tv1->tv_sec ) * EIO_TICKS 332static volatile unsigned int max_idle = 4; /* maximum number of threads that can idle indefinitely */
97 + ((tv2->tv_usec - tv1->tv_usec) >> 10); 333static volatile unsigned int idle_timeout = 10; /* number of seconds after which an idle threads exit */
98}
99 334
100static unsigned int started, idle, wanted; 335static xmutex_t wrklock;
336static xmutex_t reslock;
337static xmutex_t reqlock;
338static xcond_t reqwait;
339
340#if !HAVE_PREADWRITE
341/*
342 * make our pread/pwrite emulation safe against themselves, but not against
343 * normal read/write by using a mutex. slows down execution a lot,
344 * but that's your problem, not mine.
345 */
346static xmutex_t preadwritelock;
347#endif
348
349typedef struct etp_worker
350{
351 /* locked by wrklock */
352 struct etp_worker *prev, *next;
353
354 xthread_t tid;
355
356 /* locked by reslock, reqlock or wrklock */
357 ETP_REQ *req; /* currently processed request */
358
359#ifdef ETP_WORKER_COMMON
360 ETP_WORKER_COMMON
361#endif
362} etp_worker;
363
364static etp_worker wrk_first; /* NOT etp */
365
366#define ETP_WORKER_LOCK(wrk) X_LOCK (wrklock)
367#define ETP_WORKER_UNLOCK(wrk) X_UNLOCK (wrklock)
101 368
102/* worker threads management */ 369/* worker threads management */
103static mutex_t wrklock = X_MUTEX_INIT;
104 370
105typedef struct worker { 371static void ecb_cold
106 /* locked by wrklock */
107 struct worker *prev, *next;
108
109 thread_t tid;
110
111 /* locked by reslock, reqlock or wrklock */
112 eio_req *req; /* currently processed request */
113 void *dbuf;
114 DIR *dirp;
115} worker;
116
117static worker wrk_first = { &wrk_first, &wrk_first, 0 };
118
119static void worker_clear (worker *wrk) 372etp_worker_clear (etp_worker *wrk)
120{ 373{
121 if (wrk->dirp)
122 {
123 closedir (wrk->dirp);
124 wrk->dirp = 0;
125 }
126
127 if (wrk->dbuf)
128 {
129 free (wrk->dbuf);
130 wrk->dbuf = 0;
131 }
132} 374}
133 375
134static void worker_free (worker *wrk) 376static void ecb_cold
377etp_worker_free (etp_worker *wrk)
135{ 378{
136 wrk->next->prev = wrk->prev; 379 wrk->next->prev = wrk->prev;
137 wrk->prev->next = wrk->next; 380 wrk->prev->next = wrk->next;
138 381
139 free (wrk); 382 free (wrk);
140} 383}
141 384
142static volatile unsigned int nreqs, nready, npending; 385static unsigned int
143static volatile unsigned int max_idle = 4; 386etp_nreqs (void)
144
145static mutex_t reslock = X_MUTEX_INIT;
146static mutex_t reqlock = X_MUTEX_INIT;
147static cond_t reqwait = X_COND_INIT;
148
149unsigned int eio_nreqs (void)
150{ 387{
388 int retval;
389 if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
390 retval = nreqs;
391 if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
151 return nreqs; 392 return retval;
152} 393}
153 394
154unsigned int eio_nready (void) 395static unsigned int
396etp_nready (void)
155{ 397{
156 unsigned int retval; 398 unsigned int retval;
157 399
158 if (WORDACCESS_UNSAFE) X_LOCK (reqlock); 400 if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
159 retval = nready; 401 retval = nready;
160 if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); 402 if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
161 403
162 return retval; 404 return retval;
163} 405}
164 406
165unsigned int eio_npending (void) 407static unsigned int
408etp_npending (void)
166{ 409{
167 unsigned int retval; 410 unsigned int retval;
168 411
169 if (WORDACCESS_UNSAFE) X_LOCK (reqlock); 412 if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
170 retval = npending; 413 retval = npending;
171 if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); 414 if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
172 415
173 return retval; 416 return retval;
174} 417}
175 418
176unsigned int eio_nthreads (void) 419static unsigned int
420etp_nthreads (void)
177{ 421{
178 unsigned int retval; 422 unsigned int retval;
179 423
180 if (WORDACCESS_UNSAFE) X_LOCK (reqlock); 424 if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
181 retval = started; 425 retval = started;
… …
188 * a somewhat faster data structure might be nice, but 432 * a somewhat faster data structure might be nice, but
189 * with 8 priorities this actually needs <20 insns 433 * with 8 priorities this actually needs <20 insns
190 * per shift, the most expensive operation. 434 * per shift, the most expensive operation.
191 */ 435 */
192typedef struct { 436typedef struct {
193 eio_req *qs[EIO_NUM_PRI], *qe[EIO_NUM_PRI]; /* qstart, qend */ 437 ETP_REQ *qs[ETP_NUM_PRI], *qe[ETP_NUM_PRI]; /* qstart, qend */
194 int size; 438 int size;
195} reqq; 439} etp_reqq;
196 440
197static reqq req_queue; 441static etp_reqq req_queue;
198static reqq res_queue; 442static etp_reqq res_queue;
199 443
200static int reqq_push (reqq *q, eio_req *req) 444static void ecb_noinline ecb_cold
445reqq_init (etp_reqq *q)
446{
447 int pri;
448
449 for (pri = 0; pri < ETP_NUM_PRI; ++pri)
450 q->qs[pri] = q->qe[pri] = 0;
451
452 q->size = 0;
453}
454
455static int ecb_noinline
456reqq_push (etp_reqq *q, ETP_REQ *req)
201{ 457{
202 int pri = req->pri; 458 int pri = req->pri;
203 req->next = 0; 459 req->next = 0;
204 460
205 if (q->qe[pri]) 461 if (q->qe[pri])
… …
211 q->qe[pri] = q->qs[pri] = req; 467 q->qe[pri] = q->qs[pri] = req;
212 468
213 return q->size++; 469 return q->size++;
214} 470}
215 471
216static eio_req *reqq_shift (reqq *q) 472static ETP_REQ * ecb_noinline
473reqq_shift (etp_reqq *q)
217{ 474{
218 int pri; 475 int pri;
219 476
220 if (!q->size) 477 if (!q->size)
221 return 0; 478 return 0;
222 479
223 --q->size; 480 --q->size;
224 481
225 for (pri = EIO_NUM_PRI; pri--; ) 482 for (pri = ETP_NUM_PRI; pri--; )
226 { 483 {
227 eio_req *req = q->qs[pri]; 484 eio_req *req = q->qs[pri];
228 485
229 if (req) 486 if (req)
230 { 487 {
… …
236 } 493 }
237 494
238 abort (); 495 abort ();
239} 496}
240 497
241static void grp_try_feed (eio_req *grp) 498static int ecb_cold
499etp_init (void (*want_poll)(void), void (*done_poll)(void))
242{ 500{
243 while (grp->size < grp->int2 && !EIO_CANCELLED (grp)) 501 X_MUTEX_CREATE (wrklock);
244 { 502 X_MUTEX_CREATE (reslock);
245 int old_len = grp->size; 503 X_MUTEX_CREATE (reqlock);
504 X_COND_CREATE (reqwait);
246 505
247 EIO_FEED (grp); 506 reqq_init (&req_queue);
507 reqq_init (&res_queue);
248 508
249 /* stop if no progress has been made */ 509 wrk_first.next =
250 if (old_len == grp->size) 510 wrk_first.prev = &wrk_first;
251 {
252 grp->feed = 0;
253 break;
254 }
255 }
256}
257 511
258static int eio_finish (eio_req *req); 512 started = 0;
513 idle = 0;
514 nreqs = 0;
515 nready = 0;
516 npending = 0;
259 517
260static int grp_dec (eio_req *grp) 518 want_poll_cb = want_poll;
261{ 519 done_poll_cb = done_poll;
262 --grp->size;
263 520
264 /* call feeder, if applicable */
265 grp_try_feed (grp);
266
267 /* finish, if done */
268 if (!grp->size && grp->int1)
269 return eio_finish (grp);
270 else
271 return 0; 521 return 0;
272} 522}
273 523
274void eio_destroy (eio_req *req)
275{
276 if ((req)->flags & EIO_FLAG_PTR1_FREE) free (req->ptr1);
277 if ((req)->flags & EIO_FLAG_PTR2_FREE) free (req->ptr2);
278
279 EIO_DESTROY (req);
280}
281
282static int eio_finish (eio_req *req)
283{
284 int res = EIO_FINISH (req);
285
286 if (req->grp)
287 {
288 int res2;
289 eio_req *grp = req->grp;
290
291 /* unlink request */
292 if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
293 if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
294
295 if (grp->grp_first == req)
296 grp->grp_first = req->grp_next;
297
298 res2 = grp_dec (grp);
299
300 if (!res && res2)
301 res = res2;
302 }
303
304 eio_destroy (req);
305
306 return res;
307}
308
309void eio_grp_cancel (eio_req *grp)
310{
311 for (grp = grp->grp_first; grp; grp = grp->grp_next)
312 eio_cancel (grp);
313}
314
315void eio_cancel (eio_req *req)
316{
317 X_LOCK (wrklock);
318 req->flags |= EIO_FLAG_CANCELLED;
319 X_UNLOCK (wrklock);
320
321 eio_grp_cancel (req);
322}
323
324X_THREAD_PROC (eio_proc); 524X_THREAD_PROC (etp_proc);
325 525
326static void start_thread (void) 526static void ecb_cold
527etp_start_thread (void)
327{ 528{
328 worker *wrk = calloc (1, sizeof (worker)); 529 etp_worker *wrk = calloc (1, sizeof (etp_worker));
329 530
330 /*TODO*/ 531 /*TODO*/
331 assert (("unable to allocate worker thread data", !wrk)); 532 assert (("unable to allocate worker thread data", wrk));
332 533
333 X_LOCK (wrklock); 534 X_LOCK (wrklock);
334 535
335 if (thread_create (&wrk->tid, eio_proc, (void *)wrk)) 536 if (thread_create (&wrk->tid, etp_proc, (void *)wrk))
336 { 537 {
337 wrk->prev = &wrk_first; 538 wrk->prev = &wrk_first;
338 wrk->next = wrk_first.next; 539 wrk->next = wrk_first.next;
339 wrk_first.next->prev = wrk; 540 wrk_first.next->prev = wrk;
340 wrk_first.next = wrk; 541 wrk_first.next = wrk;
… …
344 free (wrk); 545 free (wrk);
345 546
346 X_UNLOCK (wrklock); 547 X_UNLOCK (wrklock);
347} 548}
348 549
550static void
349static void maybe_start_thread (void) 551etp_maybe_start_thread (void)
350{ 552{
351 if (eio_nthreads () >= wanted) 553 if (ecb_expect_true (etp_nthreads () >= wanted))
352 return; 554 return;
353 555
354 /* todo: maybe use idle here, but might be less exact */ 556 /* todo: maybe use idle here, but might be less exact */
355 if (0 <= (int)eio_nthreads () + (int)eio_npending () - (int)eio_nreqs ()) 557 if (ecb_expect_true (0 <= (int)etp_nthreads () + (int)etp_npending () - (int)etp_nreqs ()))
356 return; 558 return;
357 559
358 start_thread (); 560 etp_start_thread ();
359} 561}
360 562
361void eio_submit (eio_req *req) 563static void ecb_cold
362{ 564etp_end_thread (void)
363 ++nreqs;
364
365 X_LOCK (reqlock);
366 ++nready;
367 reqq_push (&req_queue, req);
368 X_COND_SIGNAL (reqwait);
369 X_UNLOCK (reqlock);
370
371 maybe_start_thread ();
372}
373
374static void end_thread (void)
375{ 565{
376 eio_req *req = calloc (1, sizeof (eio_req)); 566 eio_req *req = calloc (1, sizeof (eio_req));
377 567
378 req->type = EIO_QUIT; 568 req->type = -1;
379 req->pri = EIO_PRI_MAX + EIO_PRI_BIAS; 569 req->pri = ETP_PRI_MAX - ETP_PRI_MIN;
380 570
381 X_LOCK (reqlock); 571 X_LOCK (reqlock);
382 reqq_push (&req_queue, req); 572 reqq_push (&req_queue, req);
383 X_COND_SIGNAL (reqwait); 573 X_COND_SIGNAL (reqwait);
384 X_UNLOCK (reqlock); 574 X_UNLOCK (reqlock);
… …
386 X_LOCK (wrklock); 576 X_LOCK (wrklock);
387 --started; 577 --started;
388 X_UNLOCK (wrklock); 578 X_UNLOCK (wrklock);
389} 579}
390 580
391void eio_set_max_poll_time (double nseconds) 581static int
392{
393 if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
394 max_poll_time = nseconds;
395 if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
396}
397
398void eio_set_max_poll_reqs (unsigned int maxreqs)
399{
400 if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
401 max_poll_reqs = maxreqs;
402 if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
403}
404
405void eio_set_max_idle (unsigned int nthreads)
406{
407 if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
408 max_idle = nthreads <= 0 ? 1 : nthreads;
409 if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
410}
411
412void eio_set_min_parallel (unsigned int nthreads)
413{
414 if (wanted < nthreads)
415 wanted = nthreads;
416}
417
418void eio_set_max_parallel (unsigned int nthreads)
419{
420 if (wanted > nthreads)
421 wanted = nthreads;
422
423 while (started > wanted)
424 end_thread ();
425}
426
427int eio_poll (void) 582etp_poll (void)
428{ 583{
429 int maxreqs = max_poll_reqs; 584 unsigned int maxreqs;
585 unsigned int maxtime;
430 struct timeval tv_start, tv_now; 586 struct timeval tv_start, tv_now;
431 eio_req *req;
432 587
588 X_LOCK (reslock);
589 maxreqs = max_poll_reqs;
590 maxtime = max_poll_time;
591 X_UNLOCK (reslock);
592
433 if (max_poll_time) 593 if (maxtime)
434 gettimeofday (&tv_start, 0); 594 gettimeofday (&tv_start, 0);
435 595
436 for (;;) 596 for (;;)
437 { 597 {
598 ETP_REQ *req;
599
438 maybe_start_thread (); 600 etp_maybe_start_thread ();
439 601
440 X_LOCK (reslock); 602 X_LOCK (reslock);
441 req = reqq_shift (&res_queue); 603 req = reqq_shift (&res_queue);
442 604
443 if (req) 605 if (req)
… …
451 X_UNLOCK (reslock); 613 X_UNLOCK (reslock);
452 614
453 if (!req) 615 if (!req)
454 return 0; 616 return 0;
455 617
618 X_LOCK (reqlock);
456 --nreqs; 619 --nreqs;
620 X_UNLOCK (reqlock);
457 621
458 if (req->type == EIO_GROUP && req->size) 622 if (ecb_expect_false (req->type == EIO_GROUP && req->size))
459 { 623 {
460 req->int1 = 1; /* mark request as delayed */ 624 req->int1 = 1; /* mark request as delayed */
461 continue; 625 continue;
462 } 626 }
463 else 627 else
464 { 628 {
465 int res = eio_finish (req); 629 int res = ETP_FINISH (req);
466 if (res) 630 if (ecb_expect_false (res))
467 return res; 631 return res;
468 } 632 }
469 633
470 if (maxreqs && !--maxreqs) 634 if (ecb_expect_false (maxreqs && !--maxreqs))
471 break; 635 break;
472 636
473 if (max_poll_time) 637 if (maxtime)
474 { 638 {
475 gettimeofday (&tv_now, 0); 639 gettimeofday (&tv_now, 0);
476 640
477 if (tvdiff (&tv_start, &tv_now) >= max_poll_time) 641 if (tvdiff (&tv_start, &tv_now) >= maxtime)
478 break; 642 break;
479 } 643 }
480 } 644 }
481 645
482 errno = EAGAIN; 646 errno = EAGAIN;
483 return -1; 647 return -1;
484} 648}
485 649
650static void
651etp_cancel (ETP_REQ *req)
652{
653 req->cancelled = 1;
654
655 eio_grp_cancel (req);
656}
657
658static void
659etp_submit (ETP_REQ *req)
660{
661 req->pri -= ETP_PRI_MIN;
662
663 if (ecb_expect_false (req->pri < ETP_PRI_MIN - ETP_PRI_MIN)) req->pri = ETP_PRI_MIN - ETP_PRI_MIN;
664 if (ecb_expect_false (req->pri > ETP_PRI_MAX - ETP_PRI_MIN)) req->pri = ETP_PRI_MAX - ETP_PRI_MIN;
665
666 if (ecb_expect_false (req->type == EIO_GROUP))
667 {
668 /* I hope this is worth it :/ */
669 X_LOCK (reqlock);
670 ++nreqs;
671 X_UNLOCK (reqlock);
672
673 X_LOCK (reslock);
674
675 ++npending;
676
677 if (!reqq_push (&res_queue, req) && want_poll_cb)
678 want_poll_cb ();
679
680 X_UNLOCK (reslock);
681 }
682 else
683 {
684 X_LOCK (reqlock);
685 ++nreqs;
686 ++nready;
687 reqq_push (&req_queue, req);
688 X_COND_SIGNAL (reqwait);
689 X_UNLOCK (reqlock);
690
691 etp_maybe_start_thread ();
692 }
693}
694
695static void ecb_cold
696etp_set_max_poll_time (double nseconds)
697{
698 if (WORDACCESS_UNSAFE) X_LOCK (reslock);
699 max_poll_time = nseconds * EIO_TICKS;
700 if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);
701}
702
703static void ecb_cold
704etp_set_max_poll_reqs (unsigned int maxreqs)
705{
706 if (WORDACCESS_UNSAFE) X_LOCK (reslock);
707 max_poll_reqs = maxreqs;
708 if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);
709}
710
711static void ecb_cold
712etp_set_max_idle (unsigned int nthreads)
713{
714 if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
715 max_idle = nthreads;
716 if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
717}
718
719static void ecb_cold
720etp_set_idle_timeout (unsigned int seconds)
721{
722 if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
723 idle_timeout = seconds;
724 if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
725}
726
727static void ecb_cold
728etp_set_min_parallel (unsigned int nthreads)
729{
730 if (wanted < nthreads)
731 wanted = nthreads;
732}
733
734static void ecb_cold
735etp_set_max_parallel (unsigned int nthreads)
736{
737 if (wanted > nthreads)
738 wanted = nthreads;
739
740 while (started > wanted)
741 etp_end_thread ();
742}
743
744/*****************************************************************************/
745
746static void
747grp_try_feed (eio_req *grp)
748{
749 while (grp->size < grp->int2 && !EIO_CANCELLED (grp))
750 {
751 grp->flags &= ~EIO_FLAG_GROUPADD;
752
753 EIO_FEED (grp);
754
755 /* stop if no progress has been made */
756 if (!(grp->flags & EIO_FLAG_GROUPADD))
757 {
758 grp->feed = 0;
759 break;
760 }
761 }
762}
763
764static int
765grp_dec (eio_req *grp)
766{
767 --grp->size;
768
769 /* call feeder, if applicable */
770 grp_try_feed (grp);
771
772 /* finish, if done */
773 if (!grp->size && grp->int1)
774 return eio_finish (grp);
775 else
776 return 0;
777}
778
779static void
780eio_destroy (eio_req *req)
781{
782 if ((req)->flags & EIO_FLAG_PTR1_FREE) free (req->ptr1);
783 if ((req)->flags & EIO_FLAG_PTR2_FREE) free (req->ptr2);
784
785 EIO_DESTROY (req);
786}
787
788static int
789eio_finish (eio_req *req)
790{
791 int res = EIO_FINISH (req);
792
793 if (req->grp)
794 {
795 int res2;
796 eio_req *grp = req->grp;
797
798 /* unlink request */
799 if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
800 if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
801
802 if (grp->grp_first == req)
803 grp->grp_first = req->grp_next;
804
805 res2 = grp_dec (grp);
806
807 if (!res)
808 res = res2;
809 }
810
811 eio_destroy (req);
812
813 return res;
814}
815
816void
817eio_grp_cancel (eio_req *grp)
818{
819 for (grp = grp->grp_first; grp; grp = grp->grp_next)
820 eio_cancel (grp);
821}
822
823void
824eio_cancel (eio_req *req)
825{
826 etp_cancel (req);
827}
828
829void
830eio_submit (eio_req *req)
831{
832 etp_submit (req);
833}
834
835unsigned int
836eio_nreqs (void)
837{
838 return etp_nreqs ();
839}
840
841unsigned int
842eio_nready (void)
843{
844 return etp_nready ();
845}
846
847unsigned int
848eio_npending (void)
849{
850 return etp_npending ();
851}
852
853unsigned int ecb_cold
854eio_nthreads (void)
855{
856 return etp_nthreads ();
857}
858
859void ecb_cold
860eio_set_max_poll_time (double nseconds)
861{
862 etp_set_max_poll_time (nseconds);
863}
864
865void ecb_cold
866eio_set_max_poll_reqs (unsigned int maxreqs)
867{
868 etp_set_max_poll_reqs (maxreqs);
869}
870
871void ecb_cold
872eio_set_max_idle (unsigned int nthreads)
873{
874 etp_set_max_idle (nthreads);
875}
876
877void ecb_cold
878eio_set_idle_timeout (unsigned int seconds)
879{
880 etp_set_idle_timeout (seconds);
881}
882
883void ecb_cold
884eio_set_min_parallel (unsigned int nthreads)
885{
886 etp_set_min_parallel (nthreads);
887}
888
889void ecb_cold
890eio_set_max_parallel (unsigned int nthreads)
891{
892 etp_set_max_parallel (nthreads);
893}
894
895int eio_poll (void)
896{
897 return etp_poll ();
898}
899
486/*****************************************************************************/ 900/*****************************************************************************/
487/* work around various missing functions */ 901/* work around various missing functions */
488 902
489#if !HAVE_PREADWRITE 903#if !HAVE_PREADWRITE
904# undef pread
905# undef pwrite
490# define pread aio_pread 906# define pread eio__pread
491# define pwrite aio_pwrite 907# define pwrite eio__pwrite
492 908
493/* 909static eio_ssize_t
494 * make our pread/pwrite safe against themselves, but not against 910eio__pread (int fd, void *buf, size_t count, off_t offset)
495 * normal read/write by using a mutex. slows down execution a lot,
496 * but that's your problem, not mine.
497 */
498static mutex_t preadwritelock = X_MUTEX_INIT;
499
500static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
501{ 911{
502 ssize_t res; 912 eio_ssize_t res;
503 off_t ooffset; 913 off_t ooffset;
504 914
505 X_LOCK (preadwritelock); 915 X_LOCK (preadwritelock);
506 ooffset = lseek (fd, 0, SEEK_CUR); 916 ooffset = lseek (fd, 0, SEEK_CUR);
507 lseek (fd, offset, SEEK_SET); 917 lseek (fd, offset, SEEK_SET);
… …
510 X_UNLOCK (preadwritelock); 920 X_UNLOCK (preadwritelock);
511 921
512 return res; 922 return res;
513} 923}
514 924
515static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset) 925static eio_ssize_t
926eio__pwrite (int fd, void *buf, size_t count, off_t offset)
516{ 927{
517 ssize_t res; 928 eio_ssize_t res;
518 off_t ooffset; 929 off_t ooffset;
519 930
520 X_LOCK (preadwritelock); 931 X_LOCK (preadwritelock);
521 ooffset = lseek (fd, 0, SEEK_CUR); 932 ooffset = lseek (fd, 0, SEEK_CUR);
522 lseek (fd, offset, SEEK_SET); 933 lseek (fd, offset, SEEK_SET);
523 res = write (fd, buf, count); 934 res = write (fd, buf, count);
524 lseek (fd, offset, SEEK_SET); 935 lseek (fd, ooffset, SEEK_SET);
525 X_UNLOCK (preadwritelock); 936 X_UNLOCK (preadwritelock);
526 937
527 return res; 938 return res;
528} 939}
529#endif 940#endif
530 941
531#ifndef HAVE_FUTIMES 942#ifndef HAVE_UTIMES
532 943
944# undef utimes
533# define utimes(path,times) aio_utimes (path, times) 945# define utimes(path,times) eio__utimes (path, times)
534# define futimes(fd,times) aio_futimes (fd, times)
535 946
947static int
536static int aio_utimes (const char *filename, const struct timeval times[2]) 948eio__utimes (const char *filename, const struct timeval times[2])
537{ 949{
538 if (times) 950 if (times)
539 { 951 {
540 struct utimbuf buf; 952 struct utimbuf buf;
541 953
… …
546 } 958 }
547 else 959 else
548 return utime (filename, 0); 960 return utime (filename, 0);
549} 961}
550 962
963#endif
964
965#ifndef HAVE_FUTIMES
966
967# undef futimes
968# define futimes(fd,times) eio__futimes (fd, times)
969
970static int
551static int aio_futimes (int fd, const struct timeval tv[2]) 971eio__futimes (int fd, const struct timeval tv[2])
552{ 972{
553 errno = ENOSYS; 973 errno = ENOSYS;
554 return -1; 974 return -1;
555} 975}
556 976
557#endif 977#endif
558 978
559#if !HAVE_FDATASYNC 979#if !HAVE_FDATASYNC
980# undef fdatasync
560# define fdatasync fsync 981# define fdatasync(fd) fsync (fd)
561#endif 982#endif
983
984static int
985eio__syncfs (int fd)
986{
987 int res;
988
989#if HAVE_SYS_SYNCFS
990 res = (int)syscall (__NR_syncfs, (int)(fd));
991#else
992 res = -1;
993 errno = ENOSYS;
994#endif
995
996 if (res < 0 && errno == ENOSYS && fd >= 0)
997 sync ();
998
999 return res;
1000}
1001
1002/* sync_file_range always needs emulation */
1003static int
1004eio__sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags)
1005{
1006#if HAVE_SYNC_FILE_RANGE
1007 int res;
1008
1009 if (EIO_SYNC_FILE_RANGE_WAIT_BEFORE != SYNC_FILE_RANGE_WAIT_BEFORE
1010 || EIO_SYNC_FILE_RANGE_WRITE != SYNC_FILE_RANGE_WRITE
1011 || EIO_SYNC_FILE_RANGE_WAIT_AFTER != SYNC_FILE_RANGE_WAIT_AFTER)
1012 {
1013 flags = 0
1014 | (flags & EIO_SYNC_FILE_RANGE_WAIT_BEFORE ? SYNC_FILE_RANGE_WAIT_BEFORE : 0)
1015 | (flags & EIO_SYNC_FILE_RANGE_WRITE ? SYNC_FILE_RANGE_WRITE : 0)
1016 | (flags & EIO_SYNC_FILE_RANGE_WAIT_AFTER ? SYNC_FILE_RANGE_WAIT_AFTER : 0);
1017 }
1018
1019 res = sync_file_range (fd, offset, nbytes, flags);
1020
1021 if (!res || errno != ENOSYS)
1022 return res;
1023#endif
1024
1025 /* even though we could play tricks with the flags, it's better to always
1026 * call fdatasync, as that matches the expectation of its users best */
1027 return fdatasync (fd);
1028}
1029
1030static int
1031eio__fallocate (int fd, int mode, off_t offset, size_t len)
1032{
1033#if HAVE_FALLOCATE
1034 return fallocate (fd, mode, offset, len);
1035#else
1036 errno = ENOSYS;
1037 return -1;
1038#endif
1039}
562 1040
563#if !HAVE_READAHEAD 1041#if !HAVE_READAHEAD
1042# undef readahead
564# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self) 1043# define readahead(fd,offset,count) eio__readahead (fd, offset, count, self)
565 1044
1045static eio_ssize_t
566static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self) 1046eio__readahead (int fd, off_t offset, size_t count, etp_worker *self)
567{ 1047{
568 size_t todo = count; 1048 size_t todo = count;
569 dBUF; 1049 dBUF;
570 1050
571 while (todo > 0) 1051 while (todo > 0)
… …
575 pread (fd, eio_buf, len, offset); 1055 pread (fd, eio_buf, len, offset);
576 offset += len; 1056 offset += len;
577 todo -= len; 1057 todo -= len;
578 } 1058 }
579 1059
1060 FUBd;
1061
580 errno = 0; 1062 errno = 0;
581 return count; 1063 return count;
582} 1064}
583 1065
584#endif 1066#endif
585 1067
586#if !HAVE_READDIR_R
587# define readdir_r aio_readdir_r
588
589static mutex_t readdirlock = X_MUTEX_INIT;
590
591static int readdir_r (DIR *dirp, EIO_STRUCT_DIRENT *ent, EIO_STRUCT_DIRENT **res)
592{
593 EIO_STRUCT_DIRENT *e;
594 int errorno;
595
596 X_LOCK (readdirlock);
597
598 e = readdir (dirp);
599 errorno = errno;
600
601 if (e)
602 {
603 *res = ent;
604 strcpy (ent->d_name, e->d_name);
605 }
606 else
607 *res = 0;
608
609 X_UNLOCK (readdirlock);
610
611 errno = errorno;
612 return e ? 0 : -1;
613}
614#endif
615
616/* sendfile always needs emulation */ 1068/* sendfile always needs emulation */
1069static eio_ssize_t
617static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self) 1070eio__sendfile (int ofd, int ifd, off_t offset, size_t count)
618{ 1071{
1072 eio_ssize_t written = 0;
619 ssize_t res; 1073 eio_ssize_t res;
620 1074
621 if (!count) 1075 if (!count)
622 return 0; 1076 return 0;
623 1077
1078 for (;;)
1079 {
1080#ifdef __APPLE__
1081# undef HAVE_SENDFILE /* broken, as everything on os x */
1082#endif
624#if HAVE_SENDFILE 1083#if HAVE_SENDFILE
625# if __linux 1084# if __linux
1085 off_t soffset = offset;
626 res = sendfile (ofd, ifd, &offset, count); 1086 res = sendfile (ofd, ifd, &soffset, count);
627 1087
628# elif __freebsd 1088# elif __FreeBSD__
629 /* 1089 /*
630 * Of course, the freebsd sendfile is a dire hack with no thoughts 1090 * Of course, the freebsd sendfile is a dire hack with no thoughts
631 * wasted on making it similar to other I/O functions. 1091 * wasted on making it similar to other I/O functions.
632 */ 1092 */
633 {
634 off_t sbytes; 1093 off_t sbytes;
635 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0); 1094 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
636 1095
637 if (res < 0 && sbytes) 1096 #if 0 /* according to the manpage, this is correct, but broken behaviour */
638 /* maybe only on EAGAIN: as usual, the manpage leaves you guessing */ 1097 /* freebsd' sendfile will return 0 on success */
1098 /* freebsd 8 documents it as only setting *sbytes on EINTR and EAGAIN, but */
1099 /* not on e.g. EIO or EPIPE - sounds broken */
1100 if ((res < 0 && (errno == EAGAIN || errno == EINTR) && sbytes) || res == 0)
639 res = sbytes; 1101 res = sbytes;
640 } 1102 #endif
1103
1104 /* according to source inspection, this is correct, and useful behaviour */
1105 if (sbytes)
1106 res = sbytes;
1107
1108# elif defined (__APPLE__)
1109 off_t sbytes = count;
1110 res = sendfile (ifd, ofd, offset, &sbytes, 0, 0);
1111
1112 /* according to the manpage, sbytes is always valid */
1113 if (sbytes)
1114 res = sbytes;
641 1115
642# elif __hpux 1116# elif __hpux
643 res = sendfile (ofd, ifd, offset, count, 0, 0); 1117 res = sendfile (ofd, ifd, offset, count, 0, 0);
644 1118
645# elif __solaris 1119# elif __solaris
646 {
647 struct sendfilevec vec; 1120 struct sendfilevec vec;
648 size_t sbytes; 1121 size_t sbytes;
649 1122
650 vec.sfv_fd = ifd; 1123 vec.sfv_fd = ifd;
651 vec.sfv_flag = 0; 1124 vec.sfv_flag = 0;
652 vec.sfv_off = offset; 1125 vec.sfv_off = offset;
653 vec.sfv_len = count; 1126 vec.sfv_len = count;
654 1127
655 res = sendfilev (ofd, &vec, 1, &sbytes); 1128 res = sendfilev (ofd, &vec, 1, &sbytes);
656 1129
657 if (res < 0 && sbytes) 1130 if (res < 0 && sbytes)
658 res = sbytes; 1131 res = sbytes;
659 }
660 1132
661# endif 1133# endif
1134
1135#elif defined (_WIN32) && 0
1136 /* does not work, just for documentation of what would need to be done */
1137 /* actually, cannot be done like this, as TransmitFile changes the file offset, */
1138 /* libeio guarantees that the file offset does not change, and windows */
1139 /* has no way to get an independent handle to the same file description */
1140 HANDLE h = TO_SOCKET (ifd);
1141 SetFilePointer (h, offset, 0, FILE_BEGIN);
1142 res = TransmitFile (TO_SOCKET (ofd), h, count, 0, 0, 0, 0);
1143
662#else 1144#else
663 res = -1; 1145 res = -1;
664 errno = ENOSYS; 1146 errno = ENOSYS;
665#endif 1147#endif
666 1148
1149 /* we assume sendfile can copy at least 128mb in one go */
1150 if (res <= 128 * 1024 * 1024)
1151 {
1152 if (res > 0)
1153 written += res;
1154
1155 if (written)
1156 return written;
1157
1158 break;
1159 }
1160 else
1161 {
1162 /* if we requested more, then probably the kernel was lazy */
1163 written += res;
1164 offset += res;
1165 count -= res;
1166
1167 if (!count)
1168 return written;
1169 }
1170 }
1171
667 if (res < 0 1172 if (res < 0
668 && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK 1173 && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
1174 /* BSDs */
1175#ifdef ENOTSUP /* sigh, if the steenking pile called openbsd would only try to at least compile posix code... */
1176 || errno == ENOTSUP
1177#endif
1178#ifdef EOPNOTSUPP /* windows */
1179 || errno == EOPNOTSUPP /* BSDs */
1180#endif
669#if __solaris 1181#if __solaris
670 || errno == EAFNOSUPPORT || errno == EPROTOTYPE 1182 || errno == EAFNOSUPPORT || errno == EPROTOTYPE
671#endif 1183#endif
672 ) 1184 )
673 ) 1185 )
… …
677 1189
678 res = 0; 1190 res = 0;
679 1191
680 while (count) 1192 while (count)
681 { 1193 {
682 ssize_t cnt; 1194 eio_ssize_t cnt;
683 1195
684 cnt = pread (ifd, eio_buf, count > EIO_BUFSIZE ? EIO_BUFSIZE : count, offset); 1196 cnt = pread (ifd, eio_buf, count > EIO_BUFSIZE ? EIO_BUFSIZE : count, offset);
685 1197
686 if (cnt <= 0) 1198 if (cnt <= 0)
687 { 1199 {
… …
699 1211
700 offset += cnt; 1212 offset += cnt;
701 res += cnt; 1213 res += cnt;
702 count -= cnt; 1214 count -= cnt;
703 } 1215 }
1216
1217 FUBd;
704 } 1218 }
705 1219
706 return res; 1220 return res;
707} 1221}
708 1222
1223#ifdef PAGESIZE
1224# define eio_pagesize() PAGESIZE
1225#else
1226static intptr_t
1227eio_pagesize (void)
1228{
1229 static intptr_t page;
1230
1231 if (!page)
1232 page = sysconf (_SC_PAGESIZE);
1233
1234 return page;
1235}
1236#endif
1237
1238static void
1239eio_page_align (void **addr, size_t *length)
1240{
1241 intptr_t mask = eio_pagesize () - 1;
1242
1243 /* round down addr */
1244 intptr_t adj = mask & (intptr_t)*addr;
1245
1246 *addr = (void *)((intptr_t)*addr - adj);
1247 *length += adj;
1248
1249 /* round up length */
1250 *length = (*length + mask) & ~mask;
1251}
1252
1253#if !_POSIX_MEMLOCK
1254# define eio__mlockall(a) EIO_ENOSYS ()
1255#else
1256
1257static int
1258eio__mlockall (int flags)
1259{
1260 #if __GLIBC__ == 2 && __GLIBC_MINOR__ <= 7
1261 extern int mallopt (int, int);
1262 mallopt (-6, 238); /* http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=473812 */
1263 #endif
1264
1265 if (EIO_MCL_CURRENT != MCL_CURRENT
1266 || EIO_MCL_FUTURE != MCL_FUTURE)
1267 {
1268 flags = 0
1269 | (flags & EIO_MCL_CURRENT ? MCL_CURRENT : 0)
1270 | (flags & EIO_MCL_FUTURE ? MCL_FUTURE : 0);
1271 }
1272
1273 return mlockall (flags);
1274}
1275#endif
1276
1277#if !_POSIX_MEMLOCK_RANGE
1278# define eio__mlock(a,b) EIO_ENOSYS ()
1279#else
1280
1281static int
1282eio__mlock (void *addr, size_t length)
1283{
1284 eio_page_align (&addr, &length);
1285
1286 return mlock (addr, length);
1287}
1288
1289#endif
1290
1291#if !(_POSIX_MAPPED_FILES && _POSIX_SYNCHRONIZED_IO)
1292# define eio__msync(a,b,c) EIO_ENOSYS ()
1293#else
1294
1295static int
1296eio__msync (void *mem, size_t len, int flags)
1297{
1298 eio_page_align (&mem, &len);
1299
1300 if (EIO_MS_ASYNC != MS_SYNC
1301 || EIO_MS_INVALIDATE != MS_INVALIDATE
1302 || EIO_MS_SYNC != MS_SYNC)
1303 {
1304 flags = 0
1305 | (flags & EIO_MS_ASYNC ? MS_ASYNC : 0)
1306 | (flags & EIO_MS_INVALIDATE ? MS_INVALIDATE : 0)
1307 | (flags & EIO_MS_SYNC ? MS_SYNC : 0);
1308 }
1309
1310 return msync (mem, len, flags);
1311}
1312
1313#endif
1314
1315static int
1316eio__mtouch (eio_req *req)
1317{
1318 void *mem = req->ptr2;
1319 size_t len = req->size;
1320 int flags = req->int1;
1321
1322 eio_page_align (&mem, &len);
1323
1324 {
1325 intptr_t addr = (intptr_t)mem;
1326 intptr_t end = addr + len;
1327 intptr_t page = eio_pagesize ();
1328
1329 if (addr < end)
1330 if (flags & EIO_MT_MODIFY) /* modify */
1331 do { *((volatile sig_atomic_t *)addr) |= 0; } while ((addr += page) < len && !EIO_CANCELLED (req));
1332 else
1333 do { *((volatile sig_atomic_t *)addr) ; } while ((addr += page) < len && !EIO_CANCELLED (req));
1334 }
1335
1336 return 0;
1337}
1338
1339/*****************************************************************************/
1340/* requests implemented outside eio_execute, because they are so large */
1341
1342static void
1343eio__realpath (eio_req *req, etp_worker *self)
1344{
1345 char *rel = req->ptr1;
1346 char *res;
1347 char *tmp1, *tmp2;
1348#if SYMLOOP_MAX > 32
1349 int symlinks = SYMLOOP_MAX;
1350#else
1351 int symlinks = 32;
1352#endif
1353
1354 req->result = -1;
1355
1356 errno = EINVAL;
1357 if (!rel)
1358 return;
1359
1360 errno = ENOENT;
1361 if (!*rel)
1362 return;
1363
1364 if (!req->ptr2)
1365 {
1366 X_LOCK (wrklock);
1367 req->flags |= EIO_FLAG_PTR2_FREE;
1368 X_UNLOCK (wrklock);
1369 req->ptr2 = malloc (PATH_MAX * 3);
1370
1371 errno = ENOMEM;
1372 if (!req->ptr2)
1373 return;
1374 }
1375
1376 res = req->ptr2;
1377 tmp1 = res + PATH_MAX;
1378 tmp2 = tmp1 + PATH_MAX;
1379
1380#if 0 /* disabled, the musl way to do things is just too racy */
1381#if __linux && defined(O_NONBLOCK) && defined(O_NOATIME)
1382 /* on linux we may be able to ask the kernel */
1383 {
1384 int fd = open (rel, O_RDONLY | O_NONBLOCK | O_NOCTTY | O_NOATIME);
1385
1386 if (fd >= 0)
1387 {
1388 sprintf (tmp1, "/proc/self/fd/%d", fd);
1389 req->result = readlink (tmp1, res, PATH_MAX);
1390 close (fd);
1391
1392 /* here we should probably stat the open file and the disk file, to make sure they still match */
1393
1394 if (req->result > 0)
1395 goto done;
1396 }
1397 else if (errno == ELOOP || errno == ENAMETOOLONG || errno == ENOENT || errno == ENOTDIR || errno == EIO)
1398 return;
1399 }
1400#endif
1401#endif
1402
1403 if (*rel != '/')
1404 {
1405 if (!getcwd (res, PATH_MAX))
1406 return;
1407
1408 if (res [1]) /* only use if not / */
1409 res += strlen (res);
1410 }
1411
1412 while (*rel)
1413 {
1414 eio_ssize_t len, linklen;
1415 char *beg = rel;
1416
1417 while (*rel && *rel != '/')
1418 ++rel;
1419
1420 len = rel - beg;
1421
1422 if (!len) /* skip slashes */
1423 {
1424 ++rel;
1425 continue;
1426 }
1427
1428 if (beg [0] == '.')
1429 {
1430 if (len == 1)
1431 continue; /* . - nop */
1432
1433 if (beg [1] == '.' && len == 2)
1434 {
1435 /* .. - back up one component, if possible */
1436
1437 while (res != req->ptr2)
1438 if (*--res == '/')
1439 break;
1440
1441 continue;
1442 }
1443 }
1444
1445 errno = ENAMETOOLONG;
1446 if (res + 1 + len + 1 >= tmp1)
1447 return;
1448
1449 /* copy one component */
1450 *res = '/';
1451 memcpy (res + 1, beg, len);
1452
1453 /* zero-terminate, for readlink */
1454 res [len + 1] = 0;
1455
1456 /* now check if it's a symlink */
1457 linklen = readlink (req->ptr2, tmp1, PATH_MAX);
1458
1459 if (linklen < 0)
1460 {
1461 if (errno != EINVAL)
1462 return;
1463
1464 /* it's a normal directory. hopefully */
1465 res += len + 1;
1466 }
1467 else
1468 {
1469 /* yay, it was a symlink - build new path in tmp2 */
1470 int rellen = strlen (rel);
1471
1472 errno = ENAMETOOLONG;
1473 if (linklen + 1 + rellen >= PATH_MAX)
1474 return;
1475
1476 errno = ELOOP;
1477 if (!--symlinks)
1478 return;
1479
1480 if (*tmp1 == '/')
1481 res = req->ptr2; /* symlink resolves to an absolute path */
1482
1483 /* we need to be careful, as rel might point into tmp2 already */
1484 memmove (tmp2 + linklen + 1, rel, rellen + 1);
1485 tmp2 [linklen] = '/';
1486 memcpy (tmp2, tmp1, linklen);
1487
1488 rel = tmp2;
1489 }
1490 }
1491
1492 /* special case for the lone root path */
1493 if (res == req->ptr2)
1494 *res++ = '/';
1495
1496 req->result = res - (char *)req->ptr2;
1497
1498done:
1499 req->ptr2 = realloc (req->ptr2, req->result); /* trade time for space savings */
1500}
1501
1502static signed char
1503eio_dent_cmp (const eio_dirent *a, const eio_dirent *b)
1504{
1505 return a->score - b->score ? a->score - b->score /* works because our signed char is always 0..100 */
1506 : a->inode < b->inode ? -1
1507 : a->inode > b->inode ? 1
1508 : 0;
1509}
1510
1511#define EIO_DENT_CMP(i,op,j) eio_dent_cmp (&i, &j) op 0
1512
1513#define EIO_SORT_CUTOFF 30 /* quite high, but performs well on many filesystems */
1514#define EIO_SORT_FAST 60 /* when to only use insertion sort */
1515
1516static void
1517eio_dent_radix_sort (eio_dirent *dents, int size, signed char score_bits, eio_ino_t inode_bits)
1518{
1519 unsigned char bits [9 + sizeof (eio_ino_t) * 8];
1520 unsigned char *bit = bits;
1521
1522 assert (CHAR_BIT == 8);
1523 assert (sizeof (eio_dirent) * 8 < 256);
1524 assert (offsetof (eio_dirent, inode)); /* we use bit #0 as sentinel */
1525 assert (offsetof (eio_dirent, score)); /* we use bit #0 as sentinel */
1526
1527 if (size <= EIO_SORT_FAST)
1528 return;
1529
1530 /* first prepare an array of bits to test in our radix sort */
1531 /* try to take endianness into account, as well as differences in eio_ino_t sizes */
1532 /* inode_bits must contain all inodes ORed together */
1533 /* which is used to skip bits that are 0 everywhere, which is very common */
1534 {
1535 eio_ino_t endianness;
1536 int i, j;
1537
1538 /* we store the byte offset of byte n into byte n of "endianness" */
1539 for (i = 0; i < sizeof (eio_ino_t); ++i)
1540 ((unsigned char *)&endianness)[i] = i;
1541
1542 *bit++ = 0;
1543
1544 for (i = 0; i < sizeof (eio_ino_t); ++i)
1545 {
1546 /* shifting off the byte offsets out of "endianness" */
1547 int offs = (offsetof (eio_dirent, inode) + (endianness & 0xff)) * 8;
1548 endianness >>= 8;
1549
1550 for (j = 0; j < 8; ++j)
1551 if (inode_bits & (((eio_ino_t)1) << (i * 8 + j)))
1552 *bit++ = offs + j;
1553 }
1554
1555 for (j = 0; j < 8; ++j)
1556 if (score_bits & (1 << j))
1557 *bit++ = offsetof (eio_dirent, score) * 8 + j;
1558 }
1559
1560 /* now actually do the sorting (a variant of MSD radix sort) */
1561 {
1562 eio_dirent *base_stk [9 + sizeof (eio_ino_t) * 8], *base;
1563 eio_dirent *end_stk [9 + sizeof (eio_ino_t) * 8], *end;
1564 unsigned char *bit_stk [9 + sizeof (eio_ino_t) * 8];
1565 int stk_idx = 0;
1566
1567 base_stk [stk_idx] = dents;
1568 end_stk [stk_idx] = dents + size;
1569 bit_stk [stk_idx] = bit - 1;
1570
1571 do
1572 {
1573 base = base_stk [stk_idx];
1574 end = end_stk [stk_idx];
1575 bit = bit_stk [stk_idx];
1576
1577 for (;;)
1578 {
1579 unsigned char O = *bit >> 3;
1580 unsigned char M = 1 << (*bit & 7);
1581
1582 eio_dirent *a = base;
1583 eio_dirent *b = end;
1584
1585 if (b - a < EIO_SORT_CUTOFF)
1586 break;
1587
1588 /* now bit-partition the array on the bit */
1589 /* this ugly asymmetric loop seems to perform much better than typical */
1590 /* partition algos found in the literature */
1591 do
1592 if (!(((unsigned char *)a)[O] & M))
1593 ++a;
1594 else if (!(((unsigned char *)--b)[O] & M))
1595 {
1596 eio_dirent tmp = *a; *a = *b; *b = tmp;
1597 ++a;
1598 }
1599 while (b > a);
1600
1601 /* next bit, or stop, if no bits left in this path */
1602 if (!*--bit)
1603 break;
1604
1605 base_stk [stk_idx] = a;
1606 end_stk [stk_idx] = end;
1607 bit_stk [stk_idx] = bit;
1608 ++stk_idx;
1609
1610 end = a;
1611 }
1612 }
1613 while (stk_idx--);
1614 }
1615}
1616
1617static void
1618eio_dent_insertion_sort (eio_dirent *dents, int size)
1619{
1620 /* first move the smallest element to the front, to act as a sentinel */
1621 {
1622 int i;
1623 eio_dirent *min = dents;
1624
1625 /* the radix pre-pass ensures that the minimum element is in the first EIO_SORT_CUTOFF + 1 elements */
1626 for (i = size > EIO_SORT_FAST ? EIO_SORT_CUTOFF + 1 : size; --i; )
1627 if (EIO_DENT_CMP (dents [i], <, *min))
1628 min = &dents [i];
1629
1630 /* swap elements 0 and j (minimum) */
1631 {
1632 eio_dirent tmp = *dents; *dents = *min; *min = tmp;
1633 }
1634 }
1635
1636 /* then do standard insertion sort, assuming that all elements are >= dents [0] */
1637 {
1638 eio_dirent *i, *j;
1639
1640 for (i = dents + 1; i < dents + size; ++i)
1641 {
1642 eio_dirent value = *i;
1643
1644 for (j = i - 1; EIO_DENT_CMP (*j, >, value); --j)
1645 j [1] = j [0];
1646
1647 j [1] = value;
1648 }
1649 }
1650}
1651
1652static void
1653eio_dent_sort (eio_dirent *dents, int size, signed char score_bits, eio_ino_t inode_bits)
1654{
1655 if (size <= 1)
1656 return; /* our insertion sort relies on size > 0 */
1657
1658 /* first we use a radix sort, but only for dirs >= EIO_SORT_FAST */
1659 /* and stop sorting when the partitions are <= EIO_SORT_CUTOFF */
1660 eio_dent_radix_sort (dents, size, score_bits, inode_bits);
1661
1662 /* use an insertion sort at the end, or for small arrays, */
1663 /* as insertion sort is more efficient for small partitions */
1664 eio_dent_insertion_sort (dents, size);
1665}
1666
709/* read a full directory */ 1667/* read a full directory */
1668static void
710static void scandir_ (eio_req *req, worker *self) 1669eio__scandir (eio_req *req, etp_worker *self)
711{ 1670{
1671 char *name, *names;
1672 int namesalloc = 4096 - sizeof (void *) * 4;
1673 int namesoffs = 0;
1674 int flags = req->int1;
1675 eio_dirent *dents = 0;
1676 int dentalloc = 128;
1677 int dentoffs = 0;
1678 eio_ino_t inode_bits = 0;
1679#ifdef _WIN32
1680 HANDLE dirp;
1681 WIN32_FIND_DATA entp;
1682#else
712 DIR *dirp; 1683 DIR *dirp;
713 union
714 {
715 EIO_STRUCT_DIRENT d;
716 char b [offsetof (EIO_STRUCT_DIRENT, d_name) + NAME_MAX + 1];
717 } *u;
718 EIO_STRUCT_DIRENT *entp; 1684 EIO_STRUCT_DIRENT *entp;
719 char *name, *names; 1685#endif
720 int memlen = 4096;
721 int memofs = 0;
722 int res = 0;
723 1686
724 X_LOCK (wrklock); 1687 req->result = -1;
1688
1689 if (!(flags & EIO_READDIR_DENTS))
1690 flags &= ~(EIO_READDIR_DIRS_FIRST | EIO_READDIR_STAT_ORDER);
1691
1692#ifdef _WIN32
1693 {
1694 int len = strlen ((const char *)req->ptr1);
1695 char *path = malloc (MAX_PATH);
1696 const char *fmt;
1697
1698 if (!len)
1699 fmt = "./*";
1700 else if (((const char *)req->ptr1)[len - 1] == '/' || ((const char *)req->ptr1)[len - 1] == '\\')
1701 fmt = "%s*";
1702 else
1703 fmt = "%s/*";
1704
1705 _snprintf (path, MAX_PATH, fmt, (const char *)req->ptr1);
1706 dirp = FindFirstFile (path, &entp);
1707 free (path);
1708
1709 if (dirp == INVALID_HANDLE_VALUE)
1710 {
1711 dirp = 0;
1712
1713 /* should steal _dosmaperr */
1714 switch (GetLastError ())
1715 {
1716 case ERROR_FILE_NOT_FOUND:
1717 req->result = 0;
1718 break;
1719
1720 case ERROR_INVALID_NAME:
1721 case ERROR_PATH_NOT_FOUND:
1722 case ERROR_NO_MORE_FILES:
1723 errno = ENOENT;
1724 break;
1725
1726 case ERROR_NOT_ENOUGH_MEMORY:
1727 errno = ENOMEM;
1728 break;
1729
1730 default:
1731 errno = EINVAL;
1732 break;
1733 }
1734 }
1735 }
1736#else
725 self->dirp = dirp = opendir (req->ptr1); 1737 dirp = opendir (req->ptr1);
726 self->dbuf = u = malloc (sizeof (*u)); 1738#endif
1739
727 req->flags |= EIO_FLAG_PTR2_FREE; 1740 if (req->flags & EIO_FLAG_PTR1_FREE)
1741 free (req->ptr1);
1742
1743 req->flags |= EIO_FLAG_PTR1_FREE | EIO_FLAG_PTR2_FREE;
1744 req->ptr1 = dents = flags ? malloc (dentalloc * sizeof (eio_dirent)) : 0;
728 req->ptr2 = names = malloc (memlen); 1745 req->ptr2 = names = malloc (namesalloc);
729 X_UNLOCK (wrklock);
730 1746
731 if (dirp && u && names) 1747 if (dirp && names && (!flags || dents))
732 for (;;) 1748 for (;;)
733 { 1749 {
1750 int done;
1751
1752#ifdef _WIN32
1753 done = !dirp;
1754#else
734 errno = 0; 1755 errno = 0;
735 readdir_r (dirp, &u->d, &entp); 1756 entp = readdir (dirp);
1757 done = !entp;
1758#endif
736 1759
737 if (!entp) 1760 if (done)
1761 {
1762#ifndef _WIN32
1763 int old_errno = errno;
1764 closedir (dirp);
1765 errno = old_errno;
1766
1767 if (errno)
1768 break;
1769#endif
1770
1771 /* sort etc. */
1772 req->int1 = flags;
1773 req->result = dentoffs;
1774
1775 if (flags & EIO_READDIR_STAT_ORDER)
1776 eio_dent_sort (dents, dentoffs, flags & EIO_READDIR_DIRS_FIRST ? 7 : 0, inode_bits);
1777 else if (flags & EIO_READDIR_DIRS_FIRST)
1778 if (flags & EIO_READDIR_FOUND_UNKNOWN)
1779 eio_dent_sort (dents, dentoffs, 7, inode_bits); /* sort by score and inode */
1780 else
1781 {
1782 /* in this case, all is known, and we just put dirs first and sort them */
1783 eio_dirent *oth = dents + dentoffs;
1784 eio_dirent *dir = dents;
1785
1786 /* now partition dirs to the front, and non-dirs to the back */
1787 /* by walking from both sides and swapping if necessary */
1788 while (oth > dir)
1789 {
1790 if (dir->type == EIO_DT_DIR)
1791 ++dir;
1792 else if ((--oth)->type == EIO_DT_DIR)
1793 {
1794 eio_dirent tmp = *dir; *dir = *oth; *oth = tmp;
1795
1796 ++dir;
1797 }
1798 }
1799
1800 /* now sort the dirs only (dirs all have the same score) */
1801 eio_dent_sort (dents, dir - dents, 0, inode_bits);
1802 }
1803
738 break; 1804 break;
1805 }
739 1806
740 name = entp->d_name; 1807 /* now add the entry to our list(s) */
1808 name = D_NAME (entp);
741 1809
1810 /* skip . and .. entries */
742 if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2]))) 1811 if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
743 { 1812 {
744 int len = strlen (name) + 1; 1813 int len = D_NAMLEN (entp) + 1;
745 1814
746 res++; 1815 while (ecb_expect_false (namesoffs + len > namesalloc))
747
748 while (memofs + len > memlen)
749 { 1816 {
750 memlen *= 2; 1817 namesalloc *= 2;
751 X_LOCK (wrklock);
752 req->ptr2 = names = realloc (names, memlen); 1818 req->ptr2 = names = realloc (names, namesalloc);
753 X_UNLOCK (wrklock);
754 1819
755 if (!names) 1820 if (!names)
756 break; 1821 break;
757 } 1822 }
758 1823
759 memcpy (names + memofs, name, len); 1824 memcpy (names + namesoffs, name, len);
1825
1826 if (dents)
1827 {
1828 struct eio_dirent *ent;
1829
1830 if (ecb_expect_false (dentoffs == dentalloc))
1831 {
1832 dentalloc *= 2;
1833 req->ptr1 = dents = realloc (dents, dentalloc * sizeof (eio_dirent));
1834
1835 if (!dents)
1836 break;
1837 }
1838
1839 ent = dents + dentoffs;
1840
1841 ent->nameofs = namesoffs; /* rather dirtily we store the offset in the pointer */
1842 ent->namelen = len - 1;
1843 ent->inode = D_INO (entp);
1844
1845 inode_bits |= ent->inode;
1846
1847 switch (D_TYPE (entp))
1848 {
1849 default:
1850 ent->type = EIO_DT_UNKNOWN;
1851 flags |= EIO_READDIR_FOUND_UNKNOWN;
1852 break;
1853
1854 #ifdef DT_FIFO
1855 case DT_FIFO: ent->type = EIO_DT_FIFO; break;
1856 #endif
1857 #ifdef DT_CHR
1858 case DT_CHR: ent->type = EIO_DT_CHR; break;
1859 #endif
1860 #ifdef DT_MPC
1861 case DT_MPC: ent->type = EIO_DT_MPC; break;
1862 #endif
1863 #ifdef DT_DIR
1864 case DT_DIR: ent->type = EIO_DT_DIR; break;
1865 #endif
1866 #ifdef DT_NAM
1867 case DT_NAM: ent->type = EIO_DT_NAM; break;
1868 #endif
1869 #ifdef DT_BLK
1870 case DT_BLK: ent->type = EIO_DT_BLK; break;
1871 #endif
1872 #ifdef DT_MPB
1873 case DT_MPB: ent->type = EIO_DT_MPB; break;
1874 #endif
1875 #ifdef DT_REG
1876 case DT_REG: ent->type = EIO_DT_REG; break;
1877 #endif
1878 #ifdef DT_NWK
1879 case DT_NWK: ent->type = EIO_DT_NWK; break;
1880 #endif
1881 #ifdef DT_CMP
1882 case DT_CMP: ent->type = EIO_DT_CMP; break;
1883 #endif
1884 #ifdef DT_LNK
1885 case DT_LNK: ent->type = EIO_DT_LNK; break;
1886 #endif
1887 #ifdef DT_SOCK
1888 case DT_SOCK: ent->type = EIO_DT_SOCK; break;
1889 #endif
1890 #ifdef DT_DOOR
1891 case DT_DOOR: ent->type = EIO_DT_DOOR; break;
1892 #endif
1893 #ifdef DT_WHT
1894 case DT_WHT: ent->type = EIO_DT_WHT; break;
1895 #endif
1896 }
1897
1898 ent->score = 7;
1899
1900 if (flags & EIO_READDIR_DIRS_FIRST)
1901 {
1902 if (ent->type == EIO_DT_UNKNOWN)
1903 {
1904 if (*name == '.') /* leading dots are likely directories, and, in any case, rare */
1905 ent->score = 1;
1906 else if (!strchr (name, '.')) /* absense of dots indicate likely dirs */
1907 ent->score = len <= 2 ? 4 - len : len <= 4 ? 4 : len <= 7 ? 5 : 6; /* shorter == more likely dir, but avoid too many classes */
1908 }
1909 else if (ent->type == EIO_DT_DIR)
1910 ent->score = 0;
1911 }
1912 }
1913
760 memofs += len; 1914 namesoffs += len;
1915 ++dentoffs;
761 } 1916 }
1917
1918 if (EIO_CANCELLED (req))
1919 {
1920 errno = ECANCELED;
1921 break;
1922 }
1923
1924#ifdef _WIN32
1925 if (!FindNextFile (dirp, &entp))
1926 {
1927 FindClose (dirp);
1928 dirp = 0;
1929 }
1930#endif
762 } 1931 }
763
764 if (errno)
765 res = -1;
766
767 req->result = res;
768} 1932}
769 1933
770/*****************************************************************************/ 1934/*****************************************************************************/
771 1935
772#define ALLOC(len) \ 1936#define ALLOC(len) \
… …
782 req->result = -1; \ 1946 req->result = -1; \
783 break; \ 1947 break; \
784 } \ 1948 } \
785 } 1949 }
786 1950
787X_THREAD_PROC (eio_proc) 1951X_THREAD_PROC (etp_proc)
788{ 1952{
789 eio_req *req; 1953 ETP_REQ *req;
790 struct timespec ts; 1954 struct timespec ts;
791 worker *self = (worker *)thr_arg; 1955 etp_worker *self = (etp_worker *)thr_arg;
792 1956
1957#if HAVE_PRCTL_SET_NAME
1958 prctl (PR_SET_NAME, (unsigned long)"eio_thread", 0, 0, 0);
1959#endif
1960
793 /* try to distribute timeouts somewhat randomly */ 1961 /* try to distribute timeouts somewhat evenly */
794 ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL); 1962 ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL);
795 1963
796 for (;;) 1964 for (;;)
797 { 1965 {
798 ts.tv_sec = time (0) + IDLE_TIMEOUT; 1966 ts.tv_sec = 0;
799 1967
800 X_LOCK (reqlock); 1968 X_LOCK (reqlock);
801 1969
802 for (;;) 1970 for (;;)
803 { 1971 {
804 self->req = req = reqq_shift (&req_queue); 1972 self->req = req = reqq_shift (&req_queue);
805 1973
806 if (req) 1974 if (req)
807 break; 1975 break;
808 1976
1977 if (ts.tv_sec == 1) /* no request, but timeout detected, let's quit */
1978 {
1979 X_UNLOCK (reqlock);
1980 X_LOCK (wrklock);
1981 --started;
1982 X_UNLOCK (wrklock);
1983 goto quit;
1984 }
1985
809 ++idle; 1986 ++idle;
810 1987
811 if (X_COND_TIMEDWAIT (reqwait, reqlock, ts) == ETIMEDOUT) 1988 if (idle <= max_idle)
1989 /* we are allowed to idle, so do so without any timeout */
1990 X_COND_WAIT (reqwait, reqlock);
1991 else
812 { 1992 {
813 if (idle > max_idle) 1993 /* initialise timeout once */
814 { 1994 if (!ts.tv_sec)
815 --idle; 1995 ts.tv_sec = time (0) + idle_timeout;
816 X_UNLOCK (reqlock);
817 X_LOCK (wrklock);
818 --started;
819 X_UNLOCK (wrklock);
820 goto quit;
821 }
822 1996
823 /* we are allowed to idle, so do so without any timeout */
824 X_COND_WAIT (reqwait, reqlock); 1997 if (X_COND_TIMEDWAIT (reqwait, reqlock, ts) == ETIMEDOUT)
825 ts.tv_sec = time (0) + IDLE_TIMEOUT; 1998 ts.tv_sec = 1; /* assuming this is not a value computed above.,.. */
826 } 1999 }
827 2000
828 --idle; 2001 --idle;
829 } 2002 }
830 2003
831 --nready; 2004 --nready;
832 2005
833 X_UNLOCK (reqlock); 2006 X_UNLOCK (reqlock);
834 2007
835 errno = 0; /* strictly unnecessary */
836
837 if (!EIO_CANCELLED (req))
838 switch (req->type) 2008 if (req->type < 0)
839 {
840 case EIO_READ: ALLOC (req->size);
841 req->result = req->offs >= 0
842 ? pread (req->int1, req->ptr2, req->size, req->offs)
843 : read (req->int1, req->ptr2, req->size); break;
844 case EIO_WRITE: req->result = req->offs >= 0
845 ? pwrite (req->int1, req->ptr2, req->size, req->offs)
846 : write (req->int1, req->ptr2, req->size); break;
847
848 case EIO_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
849 case EIO_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
850
851 case EIO_STAT: ALLOC (sizeof (EIO_STRUCT_STAT));
852 req->result = stat (req->ptr1, (EIO_STRUCT_STAT *)req->ptr2); break;
853 case EIO_LSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));
854 req->result = lstat (req->ptr1, (EIO_STRUCT_STAT *)req->ptr2); break;
855 case EIO_FSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));
856 req->result = fstat (req->int1, (EIO_STRUCT_STAT *)req->ptr2); break;
857
858 case EIO_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break;
859 case EIO_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
860 case EIO_CHMOD: req->result = chmod (req->ptr1, (mode_t)req->int2); break;
861 case EIO_FCHMOD: req->result = fchmod (req->int1, (mode_t)req->int2); break;
862 case EIO_TRUNCATE: req->result = truncate (req->ptr1, req->offs); break;
863 case EIO_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break;
864
865 case EIO_OPEN: req->result = open (req->ptr1, req->int1, (mode_t)req->int2); break;
866 case EIO_CLOSE: req->result = close (req->int1); break;
867 case EIO_DUP2: req->result = dup2 (req->int1, req->int2); break;
868 case EIO_UNLINK: req->result = unlink (req->ptr1); break;
869 case EIO_RMDIR: req->result = rmdir (req->ptr1); break;
870 case EIO_MKDIR: req->result = mkdir (req->ptr1, (mode_t)req->int2); break;
871 case EIO_RENAME: req->result = rename (req->ptr1, req->ptr2); break;
872 case EIO_LINK: req->result = link (req->ptr1, req->ptr2); break;
873 case EIO_SYMLINK: req->result = symlink (req->ptr1, req->ptr2); break;
874 case EIO_MKNOD: req->result = mknod (req->ptr1, (mode_t)req->int2, (dev_t)req->offs); break;
875
876 case EIO_READLINK: ALLOC (NAME_MAX);
877 req->result = readlink (req->ptr1, req->ptr2, NAME_MAX); break;
878
879 case EIO_SYNC: req->result = 0; sync (); break;
880 case EIO_FSYNC: req->result = fsync (req->int1); break;
881 case EIO_FDATASYNC: req->result = fdatasync (req->int1); break;
882
883 case EIO_READDIR: scandir_ (req, self); break;
884
885 case EIO_BUSY:
886#ifdef _WIN32
887 Sleep (req->nv1 * 1000.);
888#else
889 {
890 struct timeval tv;
891
892 tv.tv_sec = req->nv1;
893 tv.tv_usec = (req->nv1 - tv.tv_sec) * 1000000.;
894
895 req->result = select (0, 0, 0, 0, &tv);
896 }
897#endif
898 break;
899
900 case EIO_UTIME:
901 case EIO_FUTIME:
902 {
903 struct timeval tv[2];
904 struct timeval *times;
905
906 if (req->nv1 != -1. || req->nv2 != -1.)
907 {
908 tv[0].tv_sec = req->nv1;
909 tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.;
910 tv[1].tv_sec = req->nv2;
911 tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.;
912
913 times = tv;
914 }
915 else
916 times = 0;
917
918
919 req->result = req->type == EIO_FUTIME
920 ? futimes (req->int1, times)
921 : utimes (req->ptr1, times);
922 }
923
924 case EIO_GROUP:
925 case EIO_NOP:
926 break;
927
928 case EIO_QUIT:
929 goto quit; 2009 goto quit;
930 2010
931 default: 2011 ETP_EXECUTE (self, req);
932 req->result = -1;
933 break;
934 }
935
936 req->errorno = errno;
937 2012
938 X_LOCK (reslock); 2013 X_LOCK (reslock);
939 2014
940 ++npending; 2015 ++npending;
941 2016
942 if (!reqq_push (&res_queue, req) && want_poll_cb) 2017 if (!reqq_push (&res_queue, req) && want_poll_cb)
943 want_poll_cb (); 2018 want_poll_cb ();
944 2019
945 self->req = 0; 2020 self->req = 0;
946 worker_clear (self); 2021 etp_worker_clear (self);
947 2022
948 X_UNLOCK (reslock); 2023 X_UNLOCK (reslock);
949 } 2024 }
950 2025
951quit: 2026quit:
952 X_LOCK (wrklock); 2027 X_LOCK (wrklock);
953 worker_free (self); 2028 etp_worker_free (self);
954 X_UNLOCK (wrklock); 2029 X_UNLOCK (wrklock);
955 2030
956 return 0; 2031 return 0;
957} 2032}
958 2033
959/*****************************************************************************/ 2034/*****************************************************************************/
960 2035
961static void eio_atfork_prepare (void) 2036int ecb_cold
2037eio_init (void (*want_poll)(void), void (*done_poll)(void))
962{ 2038{
963 X_LOCK (wrklock);
964 X_LOCK (reqlock);
965 X_LOCK (reslock);
966#if !HAVE_PREADWRITE 2039#if !HAVE_PREADWRITE
967 X_LOCK (preadwritelock);
968#endif
969#if !HAVE_READDIR_R
970 X_LOCK (readdirlock);
971#endif
972}
973
974static void eio_atfork_parent (void)
975{
976#if !HAVE_READDIR_R
977 X_UNLOCK (readdirlock);
978#endif
979#if !HAVE_PREADWRITE
980 X_UNLOCK (preadwritelock);
981#endif
982 X_UNLOCK (reslock);
983 X_UNLOCK (reqlock);
984 X_UNLOCK (wrklock);
985}
986
987static void eio_atfork_child (void)
988{
989 eio_req *prv;
990
991 while (prv = reqq_shift (&req_queue))
992 eio_destroy (prv);
993
994 while (prv = reqq_shift (&res_queue))
995 eio_destroy (prv);
996
997 while (wrk_first.next != &wrk_first)
998 {
999 worker *wrk = wrk_first.next;
1000
1001 if (wrk->req)
1002 eio_destroy (wrk->req);
1003
1004 worker_clear (wrk);
1005 worker_free (wrk);
1006 }
1007
1008 started = 0;
1009 idle = 0;
1010 nreqs = 0;
1011 nready = 0;
1012 npending = 0;
1013
1014 eio_atfork_parent ();
1015}
1016
1017int eio_init (void (*want_poll)(void), void (*done_poll)(void))
1018{
1019 want_poll_cb = want_poll;
1020 done_poll_cb = done_poll;
1021
1022#ifdef _WIN32
1023 X_MUTEX_CHECK (wrklock);
1024 X_MUTEX_CHECK (reslock);
1025 X_MUTEX_CHECK (reqlock);
1026 X_MUTEX_CHECK (reqwait);
1027 X_MUTEX_CHECK (preadwritelock); 2040 X_MUTEX_CREATE (preadwritelock);
1028 X_MUTEX_CHECK (readdirlock);
1029
1030 X_COND_CHECK (reqwait);
1031#endif 2041#endif
1032 2042
1033 X_THREAD_ATFORK (eio_atfork_prepare, eio_atfork_parent, eio_atfork_child); 2043 return etp_init (want_poll, done_poll);
1034} 2044}
1035 2045
2046ecb_inline void
1036static void eio_api_destroy (eio_req *req) 2047eio_api_destroy (eio_req *req)
1037{ 2048{
1038 free (req); 2049 free (req);
1039} 2050}
1040 2051
1041#define REQ(rtype) \ 2052#define REQ(rtype) \
… …
1043 \ 2054 \
1044 req = (eio_req *)calloc (1, sizeof *req); \ 2055 req = (eio_req *)calloc (1, sizeof *req); \
1045 if (!req) \ 2056 if (!req) \
1046 return 0; \ 2057 return 0; \
1047 \ 2058 \
1048 req->type = EIO_ ## rtype; \ 2059 req->type = rtype; \
1049 req->pri = EIO_DEFAULT_PRI + EIO_PRI_BIAS; \ 2060 req->pri = pri; \
1050 req->finish = cb; \ 2061 req->finish = cb; \
2062 req->data = data; \
1051 req->destroy = eio_api_destroy; 2063 req->destroy = eio_api_destroy;
1052 2064
1053#define SEND eio_submit (req); return req 2065#define SEND eio_submit (req); return req
1054 2066
1055#define PATH (void)0 2067#define PATH \
2068 req->flags |= EIO_FLAG_PTR1_FREE; \
2069 req->ptr1 = strdup (path); \
2070 if (!req->ptr1) \
2071 { \
2072 eio_api_destroy (req); \
2073 return 0; \
2074 }
1056 2075
2076static void
2077eio_execute (etp_worker *self, eio_req *req)
2078{
2079 if (ecb_expect_false (EIO_CANCELLED (req)))
2080 {
2081 req->result = -1;
2082 req->errorno = ECANCELED;
2083 return;
2084 }
2085
2086 switch (req->type)
2087 {
2088 case EIO_READ: ALLOC (req->size);
2089 req->result = req->offs >= 0
2090 ? pread (req->int1, req->ptr2, req->size, req->offs)
2091 : read (req->int1, req->ptr2, req->size); break;
2092 case EIO_WRITE: req->result = req->offs >= 0
2093 ? pwrite (req->int1, req->ptr2, req->size, req->offs)
2094 : write (req->int1, req->ptr2, req->size); break;
2095
2096 case EIO_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
2097 case EIO_SENDFILE: req->result = eio__sendfile (req->int1, req->int2, req->offs, req->size); break;
2098
2099 case EIO_STAT: ALLOC (sizeof (EIO_STRUCT_STAT));
2100 req->result = stat (req->ptr1, (EIO_STRUCT_STAT *)req->ptr2); break;
2101 case EIO_LSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));
2102 req->result = lstat (req->ptr1, (EIO_STRUCT_STAT *)req->ptr2); break;
2103 case EIO_FSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));
2104 req->result = fstat (req->int1, (EIO_STRUCT_STAT *)req->ptr2); break;
2105
2106 case EIO_STATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS));
2107 req->result = statvfs (req->ptr1, (EIO_STRUCT_STATVFS *)req->ptr2); break;
2108 case EIO_FSTATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS));
2109 req->result = fstatvfs (req->int1, (EIO_STRUCT_STATVFS *)req->ptr2); break;
2110
2111 case EIO_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break;
2112 case EIO_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
2113 case EIO_CHMOD: req->result = chmod (req->ptr1, (mode_t)req->int2); break;
2114 case EIO_FCHMOD: req->result = fchmod (req->int1, (mode_t)req->int2); break;
2115 case EIO_TRUNCATE: req->result = truncate (req->ptr1, req->offs); break;
2116 case EIO_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break;
2117
2118 case EIO_OPEN: req->result = open (req->ptr1, req->int1, (mode_t)req->int2); break;
2119 case EIO_CLOSE: req->result = close (req->int1); break;
2120 case EIO_DUP2: req->result = dup2 (req->int1, req->int2); break;
2121 case EIO_UNLINK: req->result = unlink (req->ptr1); break;
2122 case EIO_RMDIR: req->result = rmdir (req->ptr1); break;
2123 case EIO_MKDIR: req->result = mkdir (req->ptr1, (mode_t)req->int2); break;
2124 case EIO_RENAME: req->result = rename (req->ptr1, req->ptr2); break;
2125 case EIO_LINK: req->result = link (req->ptr1, req->ptr2); break;
2126 case EIO_SYMLINK: req->result = symlink (req->ptr1, req->ptr2); break;
2127 case EIO_MKNOD: req->result = mknod (req->ptr1, (mode_t)req->int2, (dev_t)req->offs); break;
2128
2129 case EIO_REALPATH: eio__realpath (req, self); break;
2130
2131 case EIO_READLINK: ALLOC (PATH_MAX);
2132 req->result = readlink (req->ptr1, req->ptr2, PATH_MAX); break;
2133
2134 case EIO_SYNC: req->result = 0; sync (); break;
2135 case EIO_FSYNC: req->result = fsync (req->int1); break;
2136 case EIO_FDATASYNC: req->result = fdatasync (req->int1); break;
2137 case EIO_SYNCFS: req->result = eio__syncfs (req->int1); break;
2138 case EIO_SYNC_FILE_RANGE: req->result = eio__sync_file_range (req->int1, req->offs, req->size, req->int2); break;
2139 case EIO_MSYNC: req->result = eio__msync (req->ptr2, req->size, req->int1); break;
2140 case EIO_MTOUCH: req->result = eio__mtouch (req); break;
2141 case EIO_MLOCK: req->result = eio__mlock (req->ptr2, req->size); break;
2142 case EIO_MLOCKALL: req->result = eio__mlockall (req->int1); break;
2143 case EIO_FALLOCATE: req->result = eio__fallocate (req->int1, req->int2, req->offs, req->size); break;
2144
2145 case EIO_READDIR: eio__scandir (req, self); break;
2146
2147 case EIO_BUSY:
2148#ifdef _WIN32
2149 Sleep (req->nv1 * 1e3);
2150#else
2151 {
2152 struct timeval tv;
2153
2154 tv.tv_sec = req->nv1;
2155 tv.tv_usec = (req->nv1 - tv.tv_sec) * 1e6;
2156
2157 req->result = select (0, 0, 0, 0, &tv);
2158 }
2159#endif
2160 break;
2161
2162 case EIO_UTIME:
2163 case EIO_FUTIME:
2164 {
2165 struct timeval tv[2];
2166 struct timeval *times;
2167
2168 if (req->nv1 != -1. || req->nv2 != -1.)
2169 {
2170 tv[0].tv_sec = req->nv1;
2171 tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.;
2172 tv[1].tv_sec = req->nv2;
2173 tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.;
2174
2175 times = tv;
2176 }
2177 else
2178 times = 0;
2179
2180 req->result = req->type == EIO_FUTIME
2181 ? futimes (req->int1, times)
2182 : utimes (req->ptr1, times);
2183 }
2184 break;
2185
2186 case EIO_GROUP:
2187 abort (); /* handled in eio_request */
2188
2189 case EIO_NOP:
2190 req->result = 0;
2191 break;
2192
2193 case EIO_CUSTOM:
2194 req->feed (req);
2195 break;
2196
2197 default:
2198 errno = ENOSYS;
2199 req->result = -1;
2200 break;
2201 }
2202
2203 req->errorno = errno;
2204}
2205
2206#ifndef EIO_NO_WRAPPERS
2207
2208eio_req *eio_nop (int pri, eio_cb cb, void *data)
2209{
2210 REQ (EIO_NOP); SEND;
2211}
2212
2213eio_req *eio_busy (double delay, int pri, eio_cb cb, void *data)
2214{
2215 REQ (EIO_BUSY); req->nv1 = delay; SEND;
2216}
2217
1057eio_req *eio_fsync (int fd, eio_cb cb) 2218eio_req *eio_sync (int pri, eio_cb cb, void *data)
1058{ 2219{
2220 REQ (EIO_SYNC); SEND;
2221}
2222
2223eio_req *eio_fsync (int fd, int pri, eio_cb cb, void *data)
2224{
1059 REQ (FSYNC); req->int1 = fd; SEND; 2225 REQ (EIO_FSYNC); req->int1 = fd; SEND;
1060} 2226}
1061 2227
2228eio_req *eio_msync (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data)
2229{
2230 REQ (EIO_MSYNC); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND;
2231}
2232
1062eio_req *eio_fdatasync (int fd, eio_cb cb) 2233eio_req *eio_fdatasync (int fd, int pri, eio_cb cb, void *data)
1063{ 2234{
1064 REQ (FDATASYNC); req->int1 = fd; SEND; 2235 REQ (EIO_FDATASYNC); req->int1 = fd; SEND;
1065} 2236}
1066 2237
2238eio_req *eio_syncfs (int fd, int pri, eio_cb cb, void *data)
2239{
2240 REQ (EIO_SYNCFS); req->int1 = fd; SEND;
2241}
2242
2243eio_req *eio_sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags, int pri, eio_cb cb, void *data)
2244{
2245 REQ (EIO_SYNC_FILE_RANGE); req->int1 = fd; req->offs = offset; req->size = nbytes; req->int2 = flags; SEND;
2246}
2247
2248eio_req *eio_mtouch (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data)
2249{
2250 REQ (EIO_MTOUCH); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND;
2251}
2252
2253eio_req *eio_mlock (void *addr, size_t length, int pri, eio_cb cb, void *data)
2254{
2255 REQ (EIO_MLOCK); req->ptr2 = addr; req->size = length; SEND;
2256}
2257
2258eio_req *eio_mlockall (int flags, int pri, eio_cb cb, void *data)
2259{
2260 REQ (EIO_MLOCKALL); req->int1 = flags; SEND;
2261}
2262
2263eio_req *eio_fallocate (int fd, int mode, off_t offset, size_t len, int pri, eio_cb cb, void *data)
2264{
2265 REQ (EIO_FALLOCATE); req->int1 = fd; req->int2 = mode; req->offs = offset; req->size = len; SEND;
2266}
2267
2268eio_req *eio_close (int fd, int pri, eio_cb cb, void *data)
2269{
2270 REQ (EIO_CLOSE); req->int1 = fd; SEND;
2271}
2272
1067eio_req *eio_readahead (int fd, off_t offset, size_t length, eio_cb cb) 2273eio_req *eio_readahead (int fd, off_t offset, size_t length, int pri, eio_cb cb, void *data)
1068{ 2274{
1069 REQ (READAHEAD); req->int1 = fd; req->offs = offset; req->size = length; SEND; 2275 REQ (EIO_READAHEAD); req->int1 = fd; req->offs = offset; req->size = length; SEND;
1070} 2276}
1071 2277
1072eio_req *eio_read (int fd, off_t offset, size_t length, void *data, eio_cb cb) 2278eio_req *eio_read (int fd, void *buf, size_t length, off_t offset, int pri, eio_cb cb, void *data)
1073{ 2279{
1074 REQ (READ); req->int1 = fd; req->offs = offset; req->size = length; req->ptr2 = data; SEND; 2280 REQ (EIO_READ); req->int1 = fd; req->offs = offset; req->size = length; req->ptr2 = buf; SEND;
1075} 2281}
1076 2282
1077eio_req *eio_write (int fd, off_t offset, size_t length, void *data, eio_cb cb) 2283eio_req *eio_write (int fd, void *buf, size_t length, off_t offset, int pri, eio_cb cb, void *data)
1078{ 2284{
1079 REQ (WRITE); req->int1 = fd; req->offs = offset; req->size = length; req->ptr2 = data; SEND; 2285 REQ (EIO_WRITE); req->int1 = fd; req->offs = offset; req->size = length; req->ptr2 = buf; SEND;
1080} 2286}
1081 2287
1082eio_req *eio_fstat (int fd, eio_cb cb) 2288eio_req *eio_fstat (int fd, int pri, eio_cb cb, void *data)
1083{ 2289{
1084 REQ (FSTAT); req->int1 = fd; SEND; 2290 REQ (EIO_FSTAT); req->int1 = fd; SEND;
1085} 2291}
1086 2292
2293eio_req *eio_fstatvfs (int fd, int pri, eio_cb cb, void *data)
2294{
2295 REQ (EIO_FSTATVFS); req->int1 = fd; SEND;
2296}
2297
1087eio_req *eio_futime (int fd, double atime, double mtime, eio_cb cb) 2298eio_req *eio_futime (int fd, double atime, double mtime, int pri, eio_cb cb, void *data)
1088{ 2299{
1089 REQ (FUTIME); req->int1 = fd; req->nv1 = atime; req->nv2 = mtime; SEND; 2300 REQ (EIO_FUTIME); req->int1 = fd; req->nv1 = atime; req->nv2 = mtime; SEND;
1090} 2301}
1091 2302
1092eio_req *eio_ftruncate (int fd, off_t offset, eio_cb cb) 2303eio_req *eio_ftruncate (int fd, off_t offset, int pri, eio_cb cb, void *data)
1093{ 2304{
1094 REQ (FTRUNCATE); req->int1 = fd; req->offs = offset; SEND; 2305 REQ (EIO_FTRUNCATE); req->int1 = fd; req->offs = offset; SEND;
1095} 2306}
1096 2307
1097eio_req *eio_fchmod (int fd, mode_t mode, eio_cb cb) 2308eio_req *eio_fchmod (int fd, mode_t mode, int pri, eio_cb cb, void *data)
1098{ 2309{
1099 REQ (FCHMOD); req->int1 = fd; req->int2 = (long)mode; SEND; 2310 REQ (EIO_FCHMOD); req->int1 = fd; req->int2 = (long)mode; SEND;
1100} 2311}
1101 2312
1102eio_req *eio_fchown (int fd, uid_t uid, gid_t gid, eio_cb cb) 2313eio_req *eio_fchown (int fd, eio_uid_t uid, eio_gid_t gid, int pri, eio_cb cb, void *data)
1103{ 2314{
1104 REQ (FCHOWN); req->int1 = fd; req->int2 = (long)uid; req->int3 = (long)gid; SEND; 2315 REQ (EIO_FCHOWN); req->int1 = fd; req->int2 = (long)uid; req->int3 = (long)gid; SEND;
1105} 2316}
1106 2317
1107eio_req *eio_dup2 (int fd, int fd2, eio_cb cb) 2318eio_req *eio_dup2 (int fd, int fd2, int pri, eio_cb cb, void *data)
1108{ 2319{
1109 REQ (DUP2); req->int1 = fd; req->int2 = fd2; SEND; 2320 REQ (EIO_DUP2); req->int1 = fd; req->int2 = fd2; SEND;
1110} 2321}
1111 2322
1112eio_req *eio_sendfile (int out_fd, int in_fd, off_t in_offset, size_t length, eio_cb cb) 2323eio_req *eio_sendfile (int out_fd, int in_fd, off_t in_offset, size_t length, int pri, eio_cb cb, void *data)
1113{ 2324{
1114 REQ (SENDFILE); req->int1 = out_fd; req->int2 = in_fd; req->offs = in_offset; req->size = length; SEND; 2325 REQ (EIO_SENDFILE); req->int1 = out_fd; req->int2 = in_fd; req->offs = in_offset; req->size = length; SEND;
1115} 2326}
1116 2327
1117eio_req *eio_open (const char *path, int flags, mode_t mode, eio_cb cb) 2328eio_req *eio_open (const char *path, int flags, mode_t mode, int pri, eio_cb cb, void *data)
1118{ 2329{
1119 REQ (OPEN); PATH; req->int1 = flags; req->int2 = (long)mode; SEND; 2330 REQ (EIO_OPEN); PATH; req->int1 = flags; req->int2 = (long)mode; SEND;
1120} 2331}
1121 2332
1122eio_req *eio_readlink (const char *path, eio_cb cb)
1123{
1124 REQ (READLINK); PATH; SEND;
1125}
1126
1127eio_req *eio_stat (const char *path, eio_cb cb)
1128{
1129 REQ (STAT); PATH; SEND;
1130}
1131
1132eio_req *eio_lstat (const char *path, eio_cb cb)
1133{
1134 REQ (LSTAT); PATH; SEND;
1135}
1136
1137eio_req *eio_utime (const char *path, double atime, double mtime, eio_cb cb) 2333eio_req *eio_utime (const char *path, double atime, double mtime, int pri, eio_cb cb, void *data)
1138{ 2334{
1139 REQ (UTIME); PATH; req->nv1 = atime; req->nv2 = mtime; SEND; 2335 REQ (EIO_UTIME); PATH; req->nv1 = atime; req->nv2 = mtime; SEND;
1140} 2336}
1141 2337
1142eio_req *eio_truncate (const char *path, off_t offset, eio_cb cb) 2338eio_req *eio_truncate (const char *path, off_t offset, int pri, eio_cb cb, void *data)
1143{ 2339{
1144 REQ (TRUNCATE); PATH; req->offs = offset; SEND; 2340 REQ (EIO_TRUNCATE); PATH; req->offs = offset; SEND;
1145} 2341}
1146 2342
1147eio_req *eio_chown (const char *path, uid_t uid, gid_t gid, eio_cb cb) 2343eio_req *eio_chown (const char *path, eio_uid_t uid, eio_gid_t gid, int pri, eio_cb cb, void *data)
1148{ 2344{
1149 REQ (CHOWN); PATH; req->int2 = (long)uid; req->int3 = (long)gid; SEND; 2345 REQ (EIO_CHOWN); PATH; req->int2 = (long)uid; req->int3 = (long)gid; SEND;
1150} 2346}
1151 2347
1152eio_req *eio_chmod (const char *path, mode_t mode, eio_cb cb) 2348eio_req *eio_chmod (const char *path, mode_t mode, int pri, eio_cb cb, void *data)
1153{ 2349{
1154 REQ (CHMOD); PATH; req->int2 = (long)mode; SEND; 2350 REQ (EIO_CHMOD); PATH; req->int2 = (long)mode; SEND;
1155} 2351}
1156 2352
1157eio_req *eio_mkdir (const char *path, mode_t mode, eio_cb cb) 2353eio_req *eio_mkdir (const char *path, mode_t mode, int pri, eio_cb cb, void *data)
1158{ 2354{
1159 REQ (MKDIR); PATH; req->int2 = (long)mode; SEND; 2355 REQ (EIO_MKDIR); PATH; req->int2 = (long)mode; SEND;
1160} 2356}
1161 2357
1162eio_req *eio_unlink (const char *path, eio_cb cb) 2358static eio_req *
2359eio__1path (int type, const char *path, int pri, eio_cb cb, void *data)
1163{ 2360{
1164 REQ (UNLINK); PATH; SEND;
1165}
1166
1167eio_req *eio_rmdir (const char *path, eio_cb cb)
1168{
1169 REQ (RMDIR); PATH; SEND; 2361 REQ (type); PATH; SEND;
1170} 2362}
1171 2363
2364eio_req *eio_readlink (const char *path, int pri, eio_cb cb, void *data)
2365{
2366 return eio__1path (EIO_READLINK, path, pri, cb, data);
2367}
2368
2369eio_req *eio_realpath (const char *path, int pri, eio_cb cb, void *data)
2370{
2371 return eio__1path (EIO_REALPATH, path, pri, cb, data);
2372}
2373
2374eio_req *eio_stat (const char *path, int pri, eio_cb cb, void *data)
2375{
2376 return eio__1path (EIO_STAT, path, pri, cb, data);
2377}
2378
2379eio_req *eio_lstat (const char *path, int pri, eio_cb cb, void *data)
2380{
2381 return eio__1path (EIO_LSTAT, path, pri, cb, data);
2382}
2383
2384eio_req *eio_statvfs (const char *path, int pri, eio_cb cb, void *data)
2385{
2386 return eio__1path (EIO_STATVFS, path, pri, cb, data);
2387}
2388
2389eio_req *eio_unlink (const char *path, int pri, eio_cb cb, void *data)
2390{
2391 return eio__1path (EIO_UNLINK, path, pri, cb, data);
2392}
2393
1172eio_req *eio_readdir (const char *path, eio_cb cb) 2394eio_req *eio_rmdir (const char *path, int pri, eio_cb cb, void *data)
1173{ 2395{
1174 REQ (READDIR); PATH; SEND; 2396 return eio__1path (EIO_RMDIR, path, pri, cb, data);
1175} 2397}
1176 2398
2399eio_req *eio_readdir (const char *path, int flags, int pri, eio_cb cb, void *data)
2400{
2401 REQ (EIO_READDIR); PATH; req->int1 = flags; SEND;
2402}
2403
1177eio_req *eio_mknod (const char *path, mode_t mode, dev_t dev, eio_cb cb) 2404eio_req *eio_mknod (const char *path, mode_t mode, dev_t dev, int pri, eio_cb cb, void *data)
1178{ 2405{
1179 REQ (MKNOD); PATH; req->int2 = (long)mode; req->int2 = (long)dev; SEND; 2406 REQ (EIO_MKNOD); PATH; req->int2 = (long)mode; req->offs = (off_t)dev; SEND;
1180} 2407}
1181 2408
1182eio_req *eio_busy (double delay, eio_cb cb) 2409static eio_req *
2410eio__2path (int type, const char *path, const char *new_path, int pri, eio_cb cb, void *data)
1183{ 2411{
1184 REQ (BUSY); req->nv1 = delay; SEND; 2412 REQ (type); PATH;
1185}
1186 2413
2414 req->flags |= EIO_FLAG_PTR2_FREE;
2415 req->ptr2 = strdup (new_path);
2416 if (!req->ptr2)
2417 {
2418 eio_api_destroy (req);
2419 return 0;
2420 }
2421
2422 SEND;
2423}
2424
2425eio_req *eio_link (const char *path, const char *new_path, int pri, eio_cb cb, void *data)
2426{
2427 return eio__2path (EIO_LINK, path, new_path, pri, cb, data);
2428}
2429
2430eio_req *eio_symlink (const char *path, const char *new_path, int pri, eio_cb cb, void *data)
2431{
2432 return eio__2path (EIO_SYMLINK, path, new_path, pri, cb, data);
2433}
2434
2435eio_req *eio_rename (const char *path, const char *new_path, int pri, eio_cb cb, void *data)
2436{
2437 return eio__2path (EIO_RENAME, path, new_path, pri, cb, data);
2438}
2439
2440eio_req *eio_custom (void (*execute)(eio_req *), int pri, eio_cb cb, void *data)
2441{
2442 REQ (EIO_CUSTOM); req->feed = execute; SEND;
2443}
2444
2445#endif
2446
1187eio_req *eio_nop (eio_cb cb) 2447eio_req *eio_grp (eio_cb cb, void *data)
1188{ 2448{
2449 const int pri = EIO_PRI_MAX;
2450
1189 REQ (NOP); SEND; 2451 REQ (EIO_GROUP); SEND;
1190} 2452}
1191 2453
1192#undef REQ 2454#undef REQ
1193#undef PATH 2455#undef PATH
1194#undef SEND 2456#undef SEND
1195 2457
1196#if 0 2458/*****************************************************************************/
2459/* grp functions */
1197 2460
1198void 2461void
1199aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1200 PROTOTYPE: $$$;$
1201 PPCODE:
1202{
1203 dREQ;
1204
1205 req->type = EIO_OPEN;
1206 req->sv1 = newSVsv (pathname);
1207 req->ptr1 = SvPVbyte_nolen (req->sv1);
1208 req->int1 = flags;
1209 req->int2 = mode;
1210
1211 EIO_SEND;
1212}
1213
1214void
1215aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1216 PROTOTYPE: $;$
1217 ALIAS:
1218 aio_fsync = EIO_FSYNC
1219 aio_fdatasync = EIO_FDATASYNC
1220 PPCODE:
1221{
1222 dREQ;
1223
1224 req->type = ix;
1225 req->sv1 = newSVsv (fh);
1226 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1227
1228 EIO_SEND (req);
1229}
1230
1231void
1232aio_close (SV *fh, SV *callback=&PL_sv_undef)
1233 PROTOTYPE: $;$
1234 PPCODE:
1235{
1236 dREQ;
1237
1238 req->type = EIO_CLOSE;
1239 req->sv1 = newSVsv (fh);
1240 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1241
1242 EIO_SEND (req);
1243}
1244
1245void
1246aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1247 ALIAS:
1248 aio_read = EIO_READ
1249 aio_write = EIO_WRITE
1250 PROTOTYPE: $$$$$;$
1251 PPCODE:
1252{
1253 STRLEN svlen;
1254 char *svptr = SvPVbyte (data, svlen);
1255 UV len = SvUV (length);
1256
1257 SvUPGRADE (data, SVt_PV);
1258 SvPOK_on (data);
1259
1260 if (dataoffset < 0)
1261 dataoffset += svlen;
1262
1263 if (dataoffset < 0 || dataoffset > svlen)
1264 croak ("dataoffset outside of data scalar");
1265
1266 if (ix == EIO_WRITE)
1267 {
1268 /* write: check length and adjust. */
1269 if (!SvOK (length) || len + dataoffset > svlen)
1270 len = svlen - dataoffset;
1271 }
1272 else
1273 {
1274 /* read: grow scalar as necessary */
1275 svptr = SvGROW (data, len + dataoffset + 1);
1276 }
1277
1278 if (len < 0)
1279 croak ("length must not be negative");
1280
1281 {
1282 dREQ;
1283
1284 req->type = ix;
1285 req->sv1 = newSVsv (fh);
1286 req->int1 = PerlIO_fileno (ix == EIO_READ ? IoIFP (sv_2io (fh))
1287 : IoOFP (sv_2io (fh)));
1288 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1289 req->size = len;
1290 req->sv2 = SvREFCNT_inc (data);
1291 req->ptr2 = (char *)svptr + dataoffset;
1292 req->stroffset = dataoffset;
1293
1294 if (!SvREADONLY (data))
1295 {
1296 SvREADONLY_on (data);
1297 req->flags |= FLAG_SV2_RO_OFF;
1298 }
1299
1300 EIO_SEND;
1301 }
1302}
1303
1304void
1305aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
1306 PROTOTYPE: $$;$
1307 PPCODE:
1308{
1309 SV *data;
1310 dREQ;
1311
1312 data = newSV (NAME_MAX);
1313 SvPOK_on (data);
1314
1315 req->type = EIO_READLINK;
1316 req->sv1 = newSVsv (path);
1317 req->ptr1 = SvPVbyte_nolen (req->sv1);
1318 req->sv2 = data;
1319 req->ptr2 = SvPVbyte_nolen (data);
1320
1321 EIO_SEND;
1322}
1323
1324void
1325aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)
1326 PROTOTYPE: $$$$;$
1327 PPCODE:
1328{
1329 dREQ;
1330
1331 req->type = EIO_SENDFILE;
1332 req->sv1 = newSVsv (out_fh);
1333 req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1334 req->sv2 = newSVsv (in_fh);
1335 req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1336 req->offs = SvVAL64 (in_offset);
1337 req->size = length;
1338
1339 EIO_SEND;
1340}
1341
1342void
1343aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)
1344 PROTOTYPE: $$$;$
1345 PPCODE:
1346{
1347 dREQ;
1348
1349 req->type = EIO_READAHEAD;
1350 req->sv1 = newSVsv (fh);
1351 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1352 req->offs = SvVAL64 (offset);
1353 req->size = length;
1354
1355 EIO_SEND;
1356}
1357
1358void
1359aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1360 ALIAS:
1361 aio_stat = EIO_STAT
1362 aio_lstat = EIO_LSTAT
1363 PPCODE:
1364{
1365 dREQ;
1366
1367 req->ptr2 = malloc (sizeof (EIO_STRUCT_STAT));
1368 if (!req->ptr2)
1369 {
1370 req_destroy (req);
1371 croak ("out of memory during aio_stat statdata allocation");
1372 }
1373
1374 req->flags |= FLAG_PTR2_FREE;
1375 req->sv1 = newSVsv (fh_or_path);
1376
1377 if (SvPOK (fh_or_path))
1378 {
1379 req->type = ix;
1380 req->ptr1 = SvPVbyte_nolen (req->sv1);
1381 }
1382 else
1383 {
1384 req->type = EIO_FSTAT;
1385 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1386 }
1387
1388 EIO_SEND;
1389}
1390
1391void
1392aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
1393 PPCODE:
1394{
1395 dREQ;
1396
1397 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1398 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1399 req->sv1 = newSVsv (fh_or_path);
1400
1401 if (SvPOK (fh_or_path))
1402 {
1403 req->type = EIO_UTIME;
1404 req->ptr1 = SvPVbyte_nolen (req->sv1);
1405 }
1406 else
1407 {
1408 req->type = EIO_FUTIME;
1409 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1410 }
1411
1412 EIO_SEND;
1413}
1414
1415void
1416aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
1417 PPCODE:
1418{
1419 dREQ;
1420
1421 req->sv1 = newSVsv (fh_or_path);
1422 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1423
1424 if (SvPOK (fh_or_path))
1425 {
1426 req->type = EIO_TRUNCATE;
1427 req->ptr1 = SvPVbyte_nolen (req->sv1);
1428 }
1429 else
1430 {
1431 req->type = EIO_FTRUNCATE;
1432 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1433 }
1434
1435 EIO_SEND;
1436}
1437
1438void
1439aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
1440 ALIAS:
1441 aio_chmod = EIO_CHMOD
1442 aio_fchmod = EIO_FCHMOD
1443 aio_mkdir = EIO_MKDIR
1444 PPCODE:
1445{
1446 dREQ;
1447
1448 req->type = type;
1449 req->int2 = mode;
1450 req->sv1 = newSVsv (fh_or_path);
1451
1452 if (ix == EIO_FCHMOD)
1453 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1454 else
1455 req->ptr1 = SvPVbyte_nolen (req->sv1);
1456
1457 EIO_SEND;
1458}
1459
1460void
1461aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
1462 PPCODE:
1463{
1464 dREQ;
1465
1466 req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1467 req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1468 req->sv1 = newSVsv (fh_or_path);
1469
1470 if (SvPOK (fh_or_path))
1471 {
1472 req->type = EIO_CHOWN;
1473 req->ptr1 = SvPVbyte_nolen (req->sv1);
1474 }
1475 else
1476 {
1477 req->type = EIO_FCHOWN;
1478 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1479 }
1480
1481 EIO_SEND;
1482}
1483
1484void
1485aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1486 ALIAS:
1487 aio_unlink = EIO_UNLINK
1488 aio_rmdir = EIO_RMDIR
1489 aio_readdir = EIO_READDIR
1490 PPCODE:
1491{
1492 dREQ;
1493
1494 req->type = ix;
1495 req->sv1 = newSVsv (pathname);
1496 req->ptr1 = SvPVbyte_nolen (req->sv1);
1497
1498 EIO_SEND;
1499}
1500
1501void
1502aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1503 ALIAS:
1504 aio_link = EIO_LINK
1505 aio_symlink = EIO_SYMLINK
1506 aio_rename = EIO_RENAME
1507 PPCODE:
1508{
1509 dREQ;
1510
1511 req->type = ix;
1512 req->sv1 = newSVsv (oldpath);
1513 req->ptr1 = SvPVbyte_nolen (req->sv1);
1514 req->sv2 = newSVsv (newpath);
1515 req->ptr2 = SvPVbyte_nolen (req->sv2);
1516
1517 EIO_SEND;
1518}
1519
1520void
1521aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1522 PPCODE:
1523{
1524 dREQ;
1525
1526 req->type = EIO_MKNOD;
1527 req->sv1 = newSVsv (pathname);
1528 req->ptr1 = SvPVbyte_nolen (req->sv1);
1529 req->int2 = (mode_t)mode;
1530 req->offs = dev;
1531
1532 EIO_SEND;
1533}
1534
1535void
1536aio_busy (double delay, SV *callback=&PL_sv_undef)
1537 PPCODE:
1538{
1539 dREQ;
1540
1541 req->type = EIO_BUSY;
1542 req->nv1 = delay < 0. ? 0. : delay;
1543
1544 EIO_SEND;
1545}
1546
1547void
1548aio_group (SV *callback=&PL_sv_undef)
1549 PROTOTYPE: ;$
1550 PPCODE:
1551{
1552 dREQ;
1553
1554 req->type = EIO_GROUP;
1555
1556 req_send (req);
1557 XPUSHs (req_sv (req, AIO_GRP_KLASS));
1558}
1559
1560void
1561aio_nop (SV *callback=&PL_sv_undef)
1562 ALIAS:
1563 aio_nop = EIO_NOP
1564 aio_sync = EIO_SYNC
1565 PPCODE:
1566{
1567 dREQ;
1568
1569#endif
1570
1571void eio_grp_feed (eio_req *grp, void (*feed)(eio_req *req), int limit) 2462eio_grp_feed (eio_req *grp, void (*feed)(eio_req *req), int limit)
1572{ 2463{
1573 grp->int2 = limit; 2464 grp->int2 = limit;
1574 grp->feed = feed; 2465 grp->feed = feed;
1575 2466
1576 grp_try_feed (grp); 2467 grp_try_feed (grp);
1577} 2468}
1578 2469
2470void
1579void eio_grp_limit (eio_req *grp, int limit) 2471eio_grp_limit (eio_req *grp, int limit)
1580{ 2472{
1581 grp->int2 = limit; 2473 grp->int2 = limit;
1582 2474
1583 grp_try_feed (grp); 2475 grp_try_feed (grp);
1584} 2476}
1585 2477
2478void
1586void eio_grp_add (eio_req *grp, eio_req *req) 2479eio_grp_add (eio_req *grp, eio_req *req)
1587{ 2480{
1588 assert (("cannot add requests to IO::AIO::GRP after the group finished", grp->int1 != 2)); 2481 assert (("cannot add requests to IO::AIO::GRP after the group finished", grp->int1 != 2));
2482
2483 grp->flags |= EIO_FLAG_GROUPADD;
1589 2484
1590 ++grp->size; 2485 ++grp->size;
1591 req->grp = grp; 2486 req->grp = grp;
1592 2487
1593 req->grp_prev = 0; 2488 req->grp_prev = 0;
… …
1597 grp->grp_first->grp_prev = req; 2492 grp->grp_first->grp_prev = req;
1598 2493
1599 grp->grp_first = req; 2494 grp->grp_first = req;
1600} 2495}
1601 2496
2497/*****************************************************************************/
2498/* misc garbage */
1602 2499
2500eio_ssize_t
2501eio_sendfile_sync (int ofd, int ifd, off_t offset, size_t count)
2502{
2503 return eio__sendfile (ofd, ifd, offset, count);
2504}
2505

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