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Comparing libeio/eio.c (file contents):
Revision 1.2 by root, Sat May 10 23:33:40 2008 UTC vs.
Revision 1.161 by root, Fri Feb 16 21:20:52 2024 UTC

1/*
2 * libeio implementation
3 *
4 * Copyright (c) 2007,2008,2009,2010,2011,2012,2013,2016,2017,2018,2019 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"
2#include "xthread.h" 45#include "ecb.h"
3 46
4#include <errno.h> 47#include <errno.h>
5
6#include "EXTERN.h"
7#include "perl.h"
8#include "XSUB.h"
9
10#include <stddef.h> 48#include <stddef.h>
11#include <stdlib.h> 49#include <stdlib.h>
50#include <string.h>
12#include <errno.h> 51#include <errno.h>
13#include <sys/types.h> 52#include <sys/types.h>
14#include <sys/stat.h> 53#include <sys/stat.h>
15#include <limits.h> 54#include <limits.h>
16#include <fcntl.h> 55#include <fcntl.h>
17#include <sched.h> 56#include <assert.h>
57
58/* intptr_t comes from unistd.h, says POSIX/UNIX/tradition */
59/* intptr_t only comes from stdint.h, says idiot openbsd coder */
60#if HAVE_STDINT_H
61# include <stdint.h>
62#endif
63
64#ifndef ECANCELED
65# define ECANCELED EDOM
66#endif
67#ifndef ELOOP
68# define ELOOP EDOM
69#endif
70
71#if !defined(ENOTSOCK) && defined(WSAENOTSOCK)
72# define ENOTSOCK WSAENOTSOCK
73#endif
74
75static void eio_destroy (eio_req *req);
18 76
19#ifndef EIO_FINISH 77#ifndef EIO_FINISH
20# define EIO_FINISH(req) ((req)->finish) && !EIO_CANCELLED (req) ? (req)->finish (req) : 0 78# define EIO_FINISH(req) ((req)->finish) && !EIO_CANCELLED (req) ? (req)->finish (req) : 0
21#endif 79#endif
22 80
… …
26 84
27#ifndef EIO_FEED 85#ifndef EIO_FEED
28# define EIO_FEED(req) do { if ((req)->feed ) (req)->feed (req); } while (0) 86# define EIO_FEED(req) do { if ((req)->feed ) (req)->feed (req); } while (0)
29#endif 87#endif
30 88
89#ifndef EIO_FD_TO_WIN32_HANDLE
90# define EIO_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
91#endif
92#ifndef EIO_WIN32_HANDLE_TO_FD
93# define EIO_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
94#endif
95
96#define EIO_ERRNO(errval,retval) ((errno = errval), retval)
97
98#define EIO_ENOSYS() EIO_ERRNO (ENOSYS, -1)
99
31#ifdef _WIN32 100#ifdef _WIN32
32 101
33 /*doh*/ 102 #undef PAGESIZE
103 #define PAGESIZE 4096 /* GetSystemInfo? */
104
105 /* TODO: look at how perl does stat (non-sloppy), unlink (ro-files), utime, link */
106
107 #ifdef EIO_STRUCT_STATI64
108 /* look at perl's non-sloppy stat */
109 #define stat(path,buf) _stati64 (path,buf)
110 #define fstat(fd,buf) _fstati64 (fd,buf)
111 #endif
112 #define lstat(path,buf) stat (path,buf)
113 #define fsync(fd) (FlushFileBuffers ((HANDLE)EIO_FD_TO_WIN32_HANDLE (fd)) ? 0 : EIO_ERRNO (EBADF, -1))
114 #define mkdir(path,mode) _mkdir (path)
115 #define link(old,neu) (CreateHardLink (neu, old, 0) ? 0 : EIO_ERRNO (ENOENT, -1))
116
117 #define chmod(path,mode) _chmod (path, mode)
118 #define dup(fd) _dup (fd)
119 #define dup2(fd1,fd2) _dup2 (fd1, fd2)
120 #define pipe(fds) _pipe (fds, 4096, O_BINARY)
121
122 #define fcntl(fd,cmd,arg) EIO_ENOSYS ()
123 #define ioctl(fd,cmd,arg) EIO_ENOSYS ()
124 #define fchmod(fd,mode) EIO_ENOSYS ()
125 #define chown(path,uid,gid) EIO_ENOSYS ()
126 #define fchown(fd,uid,gid) EIO_ENOSYS ()
127 #define truncate(path,offs) EIO_ENOSYS () /* far-miss: SetEndOfFile */
128 #define ftruncate(fd,offs) EIO_ENOSYS () /* near-miss: SetEndOfFile */
129 #define mknod(path,mode,dev) EIO_ENOSYS ()
130 #define sync() EIO_ENOSYS ()
131 #define readlink(path,buf,s) EIO_ENOSYS ()
132 #define statvfs(path,buf) EIO_ENOSYS ()
133 #define fstatvfs(fd,buf) EIO_ENOSYS ()
134
135 #define pread(fd,buf,count,offset) eio__pread (fd, buf, count, offset)
136 #define pwrite(fd,buf,count,offset) eio__pwrite (fd, buf, count, offset)
137
138 #if __GNUC__
139 typedef long long eio_off_t; /* signed for compatibility to msvc */
140 #else
141 typedef __int64 eio_off_t; /* unsigned not supported by msvc */
142 #endif
143
144 static eio_ssize_t
145 eio__pread (int fd, void *buf, eio_ssize_t count, eio_off_t offset)
146 {
147 OVERLAPPED o = { 0 };
148 DWORD got;
149
150 o.Offset = offset;
151 o.OffsetHigh = offset >> 32;
152
153 return ReadFile ((HANDLE)EIO_FD_TO_WIN32_HANDLE (fd), buf, count, &got, &o)
154 ? got : -1;
155 }
156
157 static eio_ssize_t
158 eio__pwrite (int fd, void *buf, eio_ssize_t count, eio_off_t offset)
159 {
160 OVERLAPPED o = { 0 };
161 DWORD got;
162
163 o.Offset = offset;
164 o.OffsetHigh = offset >> 32;
165
166 return WriteFile ((HANDLE)EIO_FD_TO_WIN32_HANDLE (fd), buf, count, &got, &o)
167 ? got : -1;
168 }
169
170 /* rename() uses MoveFile, which fails to overwrite */
171 #define rename(old,neu) eio__rename (old, neu)
172
173 static int
174 eio__rename (const char *old, const char *neu)
175 {
176 if (MoveFileEx (old, neu, MOVEFILE_REPLACE_EXISTING))
177 return 0;
178
179 /* should steal _dosmaperr */
180 switch (GetLastError ())
181 {
182 case ERROR_FILE_NOT_FOUND:
183 case ERROR_PATH_NOT_FOUND:
184 case ERROR_INVALID_DRIVE:
185 case ERROR_NO_MORE_FILES:
186 case ERROR_BAD_NETPATH:
187 case ERROR_BAD_NET_NAME:
188 case ERROR_BAD_PATHNAME:
189 case ERROR_FILENAME_EXCED_RANGE:
190 errno = ENOENT;
191 break;
192
193 default:
194 errno = EACCES;
195 break;
196 }
197
198 return -1;
199 }
200
201 /* we could even stat and see if it exists */
202 static int
203 symlink (const char *old, const char *neu)
204 {
205 #if WINVER >= 0x0600
206 int flags;
207
208 /* This tries out all combinations of SYMBOLIC_LINK_FLAG_DIRECTORY
209 * and SYMBOLIC_LINK_FLAG_ALLOW_UNPRIVILEGED_CREATE,
210 * with directory first.
211 */
212 for (flags = 3; flags >= 0; --flags)
213 if (CreateSymbolicLink (neu, old, flags))
214 return 0;
215 #endif
216
217 return EIO_ERRNO (ENOENT, -1);
218 }
219
220 /* POSIX API only, causing trouble for win32 apps */
221 #define CreateHardLink(neu,old,flags) 0 /* not really creating hardlink, still using relative paths? */
222 #define CreateSymbolicLink(neu,old,flags) 0 /* vista+ only */
223
224 struct statvfs
225 {
226 int dummy;
227 };
228
229 #define DT_DIR EIO_DT_DIR
230 #define DT_REG EIO_DT_REG
231 #define D_NAME(entp) entp.cFileName
232 #define D_TYPE(entp) (entp.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY ? DT_DIR : DT_REG)
34 233
35#else 234#else
36 235
37# include "config.h" 236 #include <sys/ioctl.h>
38# include <sys/time.h> 237 #include <sys/time.h>
39# include <sys/select.h> 238 #include <sys/select.h>
40# include <unistd.h> 239 #include <unistd.h>
240 #include <signal.h>
241 #include <dirent.h>
242
243 #ifdef ANDROID
244 #include <sys/vfs.h>
245 #define statvfs statfs
246 #define fstatvfs fstatfs
247 #include <asm/page.h> /* supposedly limits.h does #define PAGESIZE PAGESIZE */
248 #else
249 #include <sys/statvfs.h>
250 #endif
251
252 #if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
253 #include <sys/mman.h>
254 #endif
255
256 #define D_NAME(entp) entp->d_name
257
258 /* POSIX_SOURCE is useless on bsd's, and XOPEN_SOURCE is unreliable there, too */
259 #if __FreeBSD__ || __NetBSD__ || __OpenBSD__
260 #define _DIRENT_HAVE_D_TYPE /* sigh */
261 #define D_INO(de) (de)->d_fileno
262 #define D_NAMLEN(de) (de)->d_namlen
263 #elif __linux || defined d_ino || _XOPEN_SOURCE >= 600
264 #define D_INO(de) (de)->d_ino
265 #endif
266
267 #ifdef _D_EXACT_NAMLEN
268 #undef D_NAMLEN
269 #define D_NAMLEN(de) _D_EXACT_NAMLEN (de)
270 #endif
271
272 #ifdef _DIRENT_HAVE_D_TYPE
273 #define D_TYPE(de) (de)->d_type
274 #endif
275
276 #ifndef EIO_STRUCT_DIRENT
277 #define EIO_STRUCT_DIRENT struct dirent
278 #endif
279
280#endif
281
282#if HAVE_UTIMES
41# include <utime.h> 283# include <utime.h>
42# include <signal.h>
43
44# ifndef EIO_STRUCT_DIRENT
45# define EIO_STRUCT_DIRENT struct dirent
46# endif 284#endif
47 285
48#endif 286#if HAVE_SYS_SYSCALL_H
49 287# include <sys/syscall.h>
50# ifndef EIO_STRUCT_STAT
51# define EIO_STRUCT_STAT struct stat
52# endif 288#endif
53 289
54#if HAVE_SENDFILE 290#if HAVE_SENDFILE
55# if __linux 291# if __linux
56# include <sys/sendfile.h> 292# include <sys/sendfile.h>
57# elif __freebsd 293# elif __FreeBSD__ || defined __APPLE__
58# include <sys/socket.h> 294# include <sys/socket.h>
59# include <sys/uio.h> 295# include <sys/uio.h>
60# elif __hpux 296# elif __hpux
61# include <sys/socket.h> 297# include <sys/socket.h>
62# elif __solaris /* not yet */ 298# elif __solaris
63# include <sys/sendfile.h> 299# include <sys/sendfile.h>
64# else 300# else
65# error sendfile support requested but not available 301# error sendfile support requested but not available
66# endif 302# endif
67#endif 303#endif
68 304
69/* number of seconds after which an idle threads exit */ 305#if HAVE_RENAMEAT2
70#define IDLE_TIMEOUT 10 306# include <sys/syscall.h>
307# include <linux/fs.h>
308#endif
309
310#ifndef D_TYPE
311# define D_TYPE(de) 0
312#endif
313#ifndef D_INO
314# define D_INO(de) 0
315#endif
316#ifndef D_NAMLEN
317# define D_NAMLEN(entp) strlen (D_NAME (entp))
318#endif
71 319
72/* used for struct dirent, AIX doesn't provide it */ 320/* used for struct dirent, AIX doesn't provide it */
73#ifndef NAME_MAX 321#ifndef NAME_MAX
74# define NAME_MAX 4096 322# define NAME_MAX 4096
75#endif 323#endif
76 324
325/* used for readlink etc. */
326#ifndef PATH_MAX
327# define PATH_MAX 0
328#endif
329
330#ifndef O_CLOEXEC
331 #define O_CLOEXEC 0
332#endif
333
334#ifndef O_NONBLOCK
335 #define O_NONBLOCK 0
336#endif
337
338#ifndef O_SEARCH
339 #define O_SEARCH O_RDONLY
340#endif
341
342#ifndef O_DIRECTORY
343 #define O_DIRECTORY 0
344#endif
345
346#ifndef EIO_PATH_MIN
347# define EIO_PATH_MIN 8160
348#endif
349
350#if defined(O_PATH)
351# define EIO_O_PATH O_PATH
352#elif defined(O_SEARCH)
353# define EIO_O_PATH O_SEARCH
354#else
355# define EIO_O_PATH 0
356#endif
357
358#define EIO_PATH_MAX (PATH_MAX <= EIO_PATH_MIN ? EIO_PATH_MIN : PATH_MAX)
359
77/* buffer size for various temporary buffers */ 360/* buffer size for various temporary buffers */
78#define EIO_BUFSIZE 65536 361#define EIO_BUFSIZE 65536
79 362
80#define dBUF \ 363#define dBUF \
81 char *eio_buf; \
82 X_LOCK (wrklock); \
83 self->dbuf = eio_buf = malloc (EIO_BUFSIZE); \ 364 char *eio_buf = malloc (EIO_BUFSIZE); \
84 X_UNLOCK (wrklock); \ 365 errno = ENOMEM; \
85 if (!eio_buf) \ 366 if (!eio_buf) \
86 return -1; 367 return -1
87 368
88#define EIO_TICKS ((1000000 + 1023) >> 10) 369#define FUBd \
370 free (eio_buf)
89 371
90static void (*want_poll_cb) (void); 372/*****************************************************************************/
91static void (*done_poll_cb) (void);
92 373
93static unsigned int max_poll_time = 0; 374struct etp_tmpbuf;
94static unsigned int max_poll_reqs = 0;
95 375
96/* calculcate time difference in ~1/EIO_TICKS of a second */ 376#if _POSIX_VERSION >= 200809L
97static int tvdiff (struct timeval *tv1, struct timeval *tv2) 377 #define HAVE_AT 1
98{ 378 #define WD2FD(wd) ((wd) ? (wd)->fd : AT_FDCWD)
99 return (tv2->tv_sec - tv1->tv_sec ) * EIO_TICKS 379#else
100 + ((tv2->tv_usec - tv1->tv_usec) >> 10); 380 #define HAVE_AT 0
101} 381 static const char *wd_expand (struct etp_tmpbuf *tmpbuf, eio_wd wd, const char *path);
382#endif
102 383
103static unsigned int started, idle, wanted; 384struct eio_pwd
104
105/* worker threads management */
106static mutex_t wrklock = X_MUTEX_INIT;
107
108typedef struct worker {
109 /* locked by wrklock */
110 struct worker *prev, *next;
111
112 thread_t tid;
113
114 /* locked by reslock, reqlock or wrklock */
115 eio_req *req; /* currently processed request */
116 void *dbuf;
117 DIR *dirp;
118} worker;
119
120static worker wrk_first = { &wrk_first, &wrk_first, 0 };
121
122static void worker_clear (worker *wrk)
123{ 385{
124 if (wrk->dirp) 386#if HAVE_AT
125 { 387 int fd;
126 closedir (wrk->dirp); 388#endif
127 wrk->dirp = 0;
128 }
129
130 if (wrk->dbuf)
131 {
132 free (wrk->dbuf);
133 wrk->dbuf = 0;
134 }
135}
136
137static void worker_free (worker *wrk)
138{
139 wrk->next->prev = wrk->prev;
140 wrk->prev->next = wrk->next;
141
142 free (wrk);
143}
144
145static volatile unsigned int nreqs, nready, npending;
146static volatile unsigned int max_idle = 4;
147
148static mutex_t reslock = X_MUTEX_INIT;
149static mutex_t reqlock = X_MUTEX_INIT;
150static cond_t reqwait = X_COND_INIT;
151
152unsigned int eio_nreqs (void)
153{
154 return nreqs;
155}
156
157unsigned int eio_nready (void)
158{
159 unsigned int retval;
160
161 if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
162 retval = nready;
163 if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
164
165 return retval;
166}
167
168unsigned int eio_npending (void)
169{
170 unsigned int retval;
171
172 if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
173 retval = npending;
174 if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
175
176 return retval;
177}
178
179unsigned int eio_nthreads (void)
180{
181 unsigned int retval;
182
183 if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
184 retval = started;
185 if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
186
187 return retval;
188}
189
190/*
191 * a somewhat faster data structure might be nice, but
192 * with 8 priorities this actually needs <20 insns
193 * per shift, the most expensive operation.
194 */
195typedef struct {
196 eio_req *qs[EIO_NUM_PRI], *qe[EIO_NUM_PRI]; /* qstart, qend */
197 int size; 389 int len;
198} reqq; 390 char str[1]; /* actually, a 0-terminated canonical path */
391};
199 392
200static reqq req_queue; 393/*****************************************************************************/
201static reqq res_queue;
202 394
203static int reqq_push (reqq *q, eio_req *req) 395#define ETP_PRI_MIN EIO_PRI_MIN
204{ 396#define ETP_PRI_MAX EIO_PRI_MAX
205 int pri = req->pri;
206 req->next = 0;
207 397
208 if (q->qe[pri]) 398#define ETP_TYPE_QUIT -1
209 { 399#define ETP_TYPE_GROUP EIO_GROUP
210 q->qe[pri]->next = req;
211 q->qe[pri] = req;
212 }
213 else
214 q->qe[pri] = q->qs[pri] = req;
215 400
216 return q->size++; 401static void eio_nop_callback (void) { }
217} 402static void (*eio_want_poll_cb)(void) = eio_nop_callback;
403static void (*eio_done_poll_cb)(void) = eio_nop_callback;
218 404
219static eio_req *reqq_shift (reqq *q) 405#define ETP_WANT_POLL(pool) eio_want_poll_cb ()
220{ 406#define ETP_DONE_POLL(pool) eio_done_poll_cb ()
221 int pri;
222 407
223 if (!q->size) 408struct etp_worker;
224 return 0; 409#define ETP_REQ eio_req
410#define ETP_DESTROY(req) eio_destroy (req)
411static int eio_finish (eio_req *req);
412#define ETP_FINISH(req) eio_finish (req)
413static void eio_execute (struct etp_worker *self, eio_req *req);
414#define ETP_EXECUTE(wrk,req) eio_execute (wrk, req)
225 415
226 --q->size; 416#include "etp.c"
227 417
228 for (pri = EIO_NUM_PRI; pri--; ) 418static struct etp_pool eio_pool;
229 { 419#define EIO_POOL (&eio_pool)
230 eio_req *req = q->qs[pri];
231 420
232 if (req) 421/*****************************************************************************/
233 {
234 if (!(q->qs[pri] = (eio_req *)req->next))
235 q->qe[pri] = 0;
236 422
237 return req; 423static void
238 }
239 }
240
241 abort ();
242}
243
244static void grp_try_feed (eio_req *grp) 424grp_try_feed (eio_req *grp)
245{ 425{
246 while (grp->size < grp->int2 && !EIO_CANCELLED (grp)) 426 while (grp->size < grp->int2 && !EIO_CANCELLED (grp))
247 { 427 {
248 int old_len = grp->size; 428 grp->flags &= ~ETP_FLAG_GROUPADD;
249 429
250 EIO_FEED (grp); 430 EIO_FEED (grp);
251 431
252 /* stop if no progress has been made */ 432 /* stop if no progress has been made */
253 if (old_len == grp->size) 433 if (!(grp->flags & ETP_FLAG_GROUPADD))
254 { 434 {
255 grp->feed = 0; 435 grp->feed = 0;
256 break; 436 break;
257 } 437 }
258 } 438 }
259} 439}
260 440
261static int eio_finish (eio_req *req); 441static int
262
263static int grp_dec (eio_req *grp) 442grp_dec (eio_req *grp)
264{ 443{
265 --grp->size; 444 --grp->size;
266 445
267 /* call feeder, if applicable */ 446 /* call feeder, if applicable */
268 grp_try_feed (grp); 447 grp_try_feed (grp);
269 448
270 /* finish, if done */ 449 /* finish, if done */
271 if (!grp->size && grp->int1) 450 if (!grp->size && grp->flags & ETP_FLAG_DELAYED)
272 return eio_finish (grp); 451 return eio_finish (grp);
273 else 452 else
274 return 0; 453 return 0;
275} 454}
276 455
456static void
277void eio_destroy (eio_req *req) 457eio_destroy (eio_req *req)
278{ 458{
459 if ((req)->flags & EIO_FLAG_PTR1_FREE) free (req->ptr1);
279 if ((req)->flags & EIO_FLAG_PTR2_FREE) 460 if ((req)->flags & EIO_FLAG_PTR2_FREE) free (req->ptr2);
280 free (req->ptr2);
281 461
282 EIO_DESTROY (req); 462 EIO_DESTROY (req);
283} 463}
284 464
465static int
285static int eio_finish (eio_req *req) 466eio_finish (eio_req *req)
286{ 467{
287 int res = EIO_FINISH (req); 468 int res = EIO_FINISH (req);
288 469
289 if (req->grp) 470 if (req->grp)
290 { 471 {
… …
298 if (grp->grp_first == req) 479 if (grp->grp_first == req)
299 grp->grp_first = req->grp_next; 480 grp->grp_first = req->grp_next;
300 481
301 res2 = grp_dec (grp); 482 res2 = grp_dec (grp);
302 483
303 if (!res && res2) 484 if (!res)
304 res = res2; 485 res = res2;
305 } 486 }
306 487
307 eio_destroy (req); 488 eio_destroy (req);
308 489
309 return res; 490 return res;
310} 491}
311 492
493void
312void eio_grp_cancel (eio_req *grp) 494eio_grp_cancel (eio_req *grp)
313{ 495{
314 for (grp = grp->grp_first; grp; grp = grp->grp_next) 496 etp_grp_cancel (EIO_POOL, grp);
315 eio_cancel (grp);
316} 497}
317 498
499void
318void eio_cancel (eio_req *req) 500eio_cancel (eio_req *req)
319{ 501{
320 req->flags |= EIO_FLAG_CANCELLED; 502 etp_cancel (EIO_POOL, req);
321
322 eio_grp_cancel (req);
323} 503}
324 504
325X_THREAD_PROC (eio_proc); 505void
326
327static void start_thread (void)
328{
329 worker *wrk = calloc (1, sizeof (worker));
330
331 if (!wrk)
332 croak ("unable to allocate worker thread data");
333
334 X_LOCK (wrklock);
335
336 if (thread_create (&wrk->tid, eio_proc, (void *)wrk))
337 {
338 wrk->prev = &wrk_first;
339 wrk->next = wrk_first.next;
340 wrk_first.next->prev = wrk;
341 wrk_first.next = wrk;
342 ++started;
343 }
344 else
345 free (wrk);
346
347 X_UNLOCK (wrklock);
348}
349
350static void maybe_start_thread (void)
351{
352 if (eio_nthreads () >= wanted)
353 return;
354
355 /* todo: maybe use idle here, but might be less exact */
356 if (0 <= (int)eio_nthreads () + (int)eio_npending () - (int)eio_nreqs ())
357 return;
358
359 start_thread ();
360}
361
362void eio_submit (eio_req *req) 506eio_submit (eio_req *req)
363{ 507{
364 ++nreqs; 508 etp_submit (EIO_POOL, req);
365
366 X_LOCK (reqlock);
367 ++nready;
368 reqq_push (&req_queue, req);
369 X_COND_SIGNAL (reqwait);
370 X_UNLOCK (reqlock);
371
372 maybe_start_thread ();
373} 509}
374 510
375static void end_thread (void) 511unsigned int
512eio_nreqs (void)
376{ 513{
377 eio_req *req = calloc (1, sizeof (eio_req)); 514 return etp_nreqs (EIO_POOL);
378
379 req->type = EIO_QUIT;
380 req->pri = EIO_PRI_MAX + EIO_PRI_BIAS;
381
382 X_LOCK (reqlock);
383 reqq_push (&req_queue, req);
384 X_COND_SIGNAL (reqwait);
385 X_UNLOCK (reqlock);
386
387 X_LOCK (wrklock);
388 --started;
389 X_UNLOCK (wrklock);
390} 515}
391 516
517unsigned int
518eio_nready (void)
519{
520 return etp_nready (EIO_POOL);
521}
522
523unsigned int
524eio_npending (void)
525{
526 return etp_npending (EIO_POOL);
527}
528
529unsigned int ecb_cold
530eio_nthreads (void)
531{
532 return etp_nthreads (EIO_POOL);
533}
534
535void ecb_cold
392void eio_set_max_poll_time (double nseconds) 536eio_set_max_poll_time (double nseconds)
393{ 537{
394 if (WORDACCESS_UNSAFE) X_LOCK (reqlock); 538 etp_set_max_poll_time (EIO_POOL, nseconds);
395 max_poll_time = nseconds;
396 if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
397} 539}
398 540
541void ecb_cold
399void eio_set_max_poll_reqs (unsigned int maxreqs) 542eio_set_max_poll_reqs (unsigned int maxreqs)
400{ 543{
401 if (WORDACCESS_UNSAFE) X_LOCK (reqlock); 544 etp_set_max_poll_reqs (EIO_POOL, maxreqs);
402 max_poll_reqs = maxreqs;
403 if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
404} 545}
405 546
547void ecb_cold
406void eio_set_max_idle (unsigned int nthreads) 548eio_set_max_idle (unsigned int nthreads)
407{ 549{
408 if (WORDACCESS_UNSAFE) X_LOCK (reqlock); 550 etp_set_max_idle (EIO_POOL, nthreads);
409 max_idle = nthreads <= 0 ? 1 : nthreads;
410 if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
411} 551}
412 552
553void ecb_cold
554eio_set_idle_timeout (unsigned int seconds)
555{
556 etp_set_idle_timeout (EIO_POOL, seconds);
557}
558
559void ecb_cold
413void eio_set_min_parallel (unsigned int nthreads) 560eio_set_min_parallel (unsigned int nthreads)
414{ 561{
415 if (wanted < nthreads) 562 etp_set_min_parallel (EIO_POOL, nthreads);
416 wanted = nthreads;
417} 563}
418 564
565void ecb_cold
419void eio_set_max_parallel (unsigned int nthreads) 566eio_set_max_parallel (unsigned int nthreads)
420{ 567{
421 if (wanted > nthreads) 568 etp_set_max_parallel (EIO_POOL, nthreads);
422 wanted = nthreads;
423
424 while (started > wanted)
425 end_thread ();
426} 569}
427 570
428int eio_poll (void) 571int eio_poll (void)
429{ 572{
430 int maxreqs = max_poll_reqs; 573 return etp_poll (EIO_POOL);
431 struct timeval tv_start, tv_now;
432 eio_req *req;
433
434 if (max_poll_time)
435 gettimeofday (&tv_start, 0);
436
437 for (;;)
438 {
439 maybe_start_thread ();
440
441 X_LOCK (reslock);
442 req = reqq_shift (&res_queue);
443
444 if (req)
445 {
446 --npending;
447
448 if (!res_queue.size && done_poll_cb)
449 done_poll_cb ();
450 }
451
452 X_UNLOCK (reslock);
453
454 if (!req)
455 return 0;
456
457 --nreqs;
458
459 if (req->type == EIO_GROUP && req->size)
460 {
461 req->int1 = 1; /* mark request as delayed */
462 continue;
463 }
464 else
465 {
466 int res = eio_finish (req);
467 if (res)
468 return res;
469 }
470
471 if (maxreqs && !--maxreqs)
472 break;
473
474 if (max_poll_time)
475 {
476 gettimeofday (&tv_now, 0);
477
478 if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
479 break;
480 }
481 }
482
483 errno = EAGAIN;
484 return -1;
485} 574}
486 575
487/*****************************************************************************/ 576/*****************************************************************************/
488/* work around various missing functions */ 577/* work around various missing functions */
489 578
490#if !HAVE_PREADWRITE 579#if HAVE_POSIX_CLOSE && !__linux
491# define pread aio_pread 580# define eio__close(fd) posix_close (fd, 0)
492# define pwrite aio_pwrite 581#else
493 582# define eio__close(fd) close (fd)
494/*
495 * make our pread/pwrite safe against themselves, but not against
496 * normal read/write by using a mutex. slows down execution a lot,
497 * but that's your problem, not mine.
498 */
499static mutex_t preadwritelock = X_MUTEX_INIT;
500
501static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
502{
503 ssize_t res;
504 off_t ooffset;
505
506 X_LOCK (preadwritelock);
507 ooffset = lseek (fd, 0, SEEK_CUR);
508 lseek (fd, offset, SEEK_SET);
509 res = read (fd, buf, count);
510 lseek (fd, ooffset, SEEK_SET);
511 X_UNLOCK (preadwritelock);
512
513 return res;
514}
515
516static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
517{
518 ssize_t res;
519 off_t ooffset;
520
521 X_LOCK (preadwritelock);
522 ooffset = lseek (fd, 0, SEEK_CUR);
523 lseek (fd, offset, SEEK_SET);
524 res = write (fd, buf, count);
525 lseek (fd, offset, SEEK_SET);
526 X_UNLOCK (preadwritelock);
527
528 return res;
529}
530#endif 583#endif
531 584
585/* close() without disturbing errno */
586static void
587silent_close (int fd)
588{
589 int saved_errno = errno;
590 eio__close (fd);
591 errno = saved_errno;
592}
593
532#ifndef HAVE_FUTIMES 594#ifndef HAVE_UTIMES
533 595
596# undef utimes
534# define utimes(path,times) aio_utimes (path, times) 597# define utimes(path,times) eio__utimes (path, times)
535# define futimes(fd,times) aio_futimes (fd, times)
536 598
599static int
537static int aio_utimes (const char *filename, const struct timeval times[2]) 600eio__utimes (const char *filename, const struct timeval times[2])
538{ 601{
539 if (times) 602 if (times)
540 { 603 {
541 struct utimbuf buf; 604 struct utimbuf buf;
542 605
… …
547 } 610 }
548 else 611 else
549 return utime (filename, 0); 612 return utime (filename, 0);
550} 613}
551 614
615#endif
616
617#ifndef HAVE_FUTIMES
618
619# undef futimes
620# define futimes(fd,times) eio__futimes (fd, times)
621
622static int
552static int aio_futimes (int fd, const struct timeval tv[2]) 623eio__futimes (int fd, const struct timeval tv[2])
553{ 624{
554 errno = ENOSYS; 625 errno = ENOSYS;
555 return -1; 626 return -1;
556} 627}
557 628
558#endif 629#endif
559 630
560#if !HAVE_FDATASYNC 631#if !HAVE_FDATASYNC
632# undef fdatasync
561# define fdatasync fsync 633# define fdatasync(fd) fsync (fd)
562#endif 634#endif
635
636static int
637eio__syncfs (int fd)
638{
639 int res;
640
641#if HAVE_SYS_SYNCFS
642 res = (int)syscall (__NR_syncfs, (int)(fd));
643#else
644 res = EIO_ENOSYS ();
645#endif
646
647 if (res < 0 && errno == ENOSYS && fd >= 0)
648 sync ();
649
650 return res;
651}
652
653/* sync_file_range always needs emulation */
654static int
655eio__sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags)
656{
657#if HAVE_SYNC_FILE_RANGE
658 int res;
659
660 if (EIO_SYNC_FILE_RANGE_WAIT_BEFORE != SYNC_FILE_RANGE_WAIT_BEFORE
661 || EIO_SYNC_FILE_RANGE_WRITE != SYNC_FILE_RANGE_WRITE
662 || EIO_SYNC_FILE_RANGE_WAIT_AFTER != SYNC_FILE_RANGE_WAIT_AFTER)
663 {
664 flags = 0
665 | (flags & EIO_SYNC_FILE_RANGE_WAIT_BEFORE ? SYNC_FILE_RANGE_WAIT_BEFORE : 0)
666 | (flags & EIO_SYNC_FILE_RANGE_WRITE ? SYNC_FILE_RANGE_WRITE : 0)
667 | (flags & EIO_SYNC_FILE_RANGE_WAIT_AFTER ? SYNC_FILE_RANGE_WAIT_AFTER : 0);
668 }
669
670 res = sync_file_range (fd, offset, nbytes, flags);
671
672 if (!res || errno != ENOSYS)
673 return res;
674#endif
675
676 /* even though we could play tricks with the flags, it's better to always
677 * call fdatasync, as that matches the expectation of its users best */
678 return fdatasync (fd);
679}
680
681static int
682eio__fallocate (int fd, int mode, off_t offset, size_t len)
683{
684#if HAVE_LINUX_FALLOCATE
685 return fallocate (fd, mode, offset, len);
686#else
687 return EIO_ENOSYS ();
688#endif
689}
563 690
564#if !HAVE_READAHEAD 691#if !HAVE_READAHEAD
692# undef readahead
565# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self) 693# define readahead(fd,offset,count) eio__readahead (fd, offset, count, self)
566 694
695static eio_ssize_t
567static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self) 696eio__readahead (int fd, off_t offset, size_t count, etp_worker *self)
568{ 697{
569 size_t todo = count; 698 size_t todo = count;
570 dBUF; 699 dBUF;
571 700
572 while (todo > 0) 701 while (todo > 0)
573 { 702 {
574 size_t len = todo < EIO_BUFSIZE ? todo : EIO_BUFSIZE; 703 size_t len = todo < EIO_BUFSIZE ? todo : EIO_BUFSIZE;
575 704
576 pread (fd, aio_buf, len, offset); 705 pread (fd, eio_buf, len, offset);
577 offset += len; 706 offset += len;
578 todo -= len; 707 todo -= len;
579 } 708 }
580 709
581 errno = 0; 710 FUBd;
711
712 /* linux's readahead basically only fails for EBADF or EINVAL (not mmappable) */
713 /* but not for e.g. EIO or eof, so we also never fail */
582 return count; 714 return 0;
583} 715}
584 716
585#endif
586
587#if !HAVE_READDIR_R
588# define readdir_r aio_readdir_r
589
590static mutex_t readdirlock = X_MUTEX_INIT;
591
592static int readdir_r (DIR *dirp, X_DIRENT *ent, X_DIRENT **res)
593{
594 X_DIRENT *e;
595 int errorno;
596
597 X_LOCK (readdirlock);
598
599 e = readdir (dirp);
600 errorno = errno;
601
602 if (e)
603 {
604 *res = ent;
605 strcpy (ent->d_name, e->d_name);
606 }
607 else
608 *res = 0;
609
610 X_UNLOCK (readdirlock);
611
612 errno = errorno;
613 return e ? 0 : -1;
614}
615#endif 717#endif
616 718
617/* sendfile always needs emulation */ 719/* sendfile always needs emulation */
720static eio_ssize_t
618static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self) 721eio__sendfile (int ofd, int ifd, off_t offset, size_t count)
619{ 722{
723 eio_ssize_t written = 0;
620 ssize_t res; 724 eio_ssize_t res;
621 725
622 if (!count) 726 if (!count)
623 return 0; 727 return 0;
624 728
729 for (;;)
730 {
731#ifdef __APPLE__
732# undef HAVE_SENDFILE /* broken, as everything on os x */
733#endif
625#if HAVE_SENDFILE 734#if HAVE_SENDFILE
626# if __linux 735# if __linux
736 off_t soffset = offset;
627 res = sendfile (ofd, ifd, &offset, count); 737 res = sendfile (ofd, ifd, &soffset, count);
628 738
629# elif __freebsd 739# elif __FreeBSD__
630 /* 740 /*
631 * Of course, the freebsd sendfile is a dire hack with no thoughts 741 * Of course, the freebsd sendfile is a dire hack with no thoughts
632 * wasted on making it similar to other I/O functions. 742 * wasted on making it similar to other I/O functions.
633 */ 743 */
634 {
635 off_t sbytes; 744 off_t sbytes;
636 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0); 745 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
637 746
638 if (res < 0 && sbytes) 747 #if 0 /* according to the manpage, this is correct, but broken behaviour */
639 /* maybe only on EAGAIN: as usual, the manpage leaves you guessing */ 748 /* freebsd' sendfile will return 0 on success */
749 /* freebsd 8 documents it as only setting *sbytes on EINTR and EAGAIN, but */
750 /* not on e.g. EIO or EPIPE - sounds broken */
751 if ((res < 0 && (errno == EAGAIN || errno == EINTR) && sbytes) || res == 0)
640 res = sbytes; 752 res = sbytes;
641 } 753 #endif
754
755 /* according to source inspection, this is correct, and useful behaviour */
756 if (sbytes)
757 res = sbytes;
758
759# elif defined __APPLE__
760 off_t sbytes = count;
761 res = sendfile (ifd, ofd, offset, &sbytes, 0, 0);
762
763 /* according to the manpage, sbytes is always valid */
764 if (sbytes)
765 res = sbytes;
642 766
643# elif __hpux 767# elif __hpux
644 res = sendfile (ofd, ifd, offset, count, 0, 0); 768 res = sendfile (ofd, ifd, offset, count, 0, 0);
645 769
646# elif __solaris 770# elif __solaris
647 {
648 struct sendfilevec vec; 771 struct sendfilevec vec;
649 size_t sbytes; 772 size_t sbytes;
650 773
651 vec.sfv_fd = ifd; 774 vec.sfv_fd = ifd;
652 vec.sfv_flag = 0; 775 vec.sfv_flag = 0;
653 vec.sfv_off = offset; 776 vec.sfv_off = offset;
654 vec.sfv_len = count; 777 vec.sfv_len = count;
655 778
656 res = sendfilev (ofd, &vec, 1, &sbytes); 779 res = sendfilev (ofd, &vec, 1, &sbytes);
657 780
658 if (res < 0 && sbytes) 781 if (res < 0 && sbytes)
659 res = sbytes; 782 res = sbytes;
660 }
661 783
662# endif 784# endif
785
786#elif defined (_WIN32) && 0
787 /* does not work, just for documentation of what would need to be done */
788 /* actually, cannot be done like this, as TransmitFile changes the file offset, */
789 /* libeio guarantees that the file offset does not change, and windows */
790 /* has no way to get an independent handle to the same file description */
791 HANDLE h = TO_SOCKET (ifd);
792 SetFilePointer (h, offset, 0, FILE_BEGIN);
793 res = TransmitFile (TO_SOCKET (ofd), h, count, 0, 0, 0, 0);
794
663#else 795#else
664 res = -1; 796 res = EIO_ENOSYS ();
665 errno = ENOSYS;
666#endif 797#endif
667 798
799 /* we assume sendfile can copy at least 128mb in one go */
800 if (res <= 128 * 1024 * 1024)
801 {
802 if (res > 0)
803 written += res;
804
805 if (written)
806 return written;
807
808 break;
809 }
810 else
811 {
812 /* if we requested more, then probably the kernel was lazy */
813 written += res;
814 offset += res;
815 count -= res;
816
817 if (!count)
818 return written;
819 }
820 }
821
668 if (res < 0 822 if (res < 0
669 && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK 823 && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
824 /* BSDs */
825#ifdef ENOTSUP /* sigh, if the steenking pile called openbsd would only try to at least compile posix code... */
826 || errno == ENOTSUP
827#endif
828#ifdef EOPNOTSUPP /* windows */
829 || errno == EOPNOTSUPP /* BSDs */
830#endif
670#if __solaris 831#if __solaris
671 || errno == EAFNOSUPPORT || errno == EPROTOTYPE 832 || errno == EAFNOSUPPORT || errno == EPROTOTYPE
672#endif 833#endif
673 ) 834 )
674 ) 835 )
… …
678 839
679 res = 0; 840 res = 0;
680 841
681 while (count) 842 while (count)
682 { 843 {
683 ssize_t cnt; 844 eio_ssize_t cnt;
684 845
685 cnt = pread (ifd, eio_buf, count > EIO_BUFSIZE ? EIO_BUFSIZE : count, offset); 846 cnt = pread (ifd, eio_buf, count > EIO_BUFSIZE ? EIO_BUFSIZE : count, offset);
686 847
687 if (cnt <= 0) 848 if (cnt <= 0)
688 { 849 {
… …
700 861
701 offset += cnt; 862 offset += cnt;
702 res += cnt; 863 res += cnt;
703 count -= cnt; 864 count -= cnt;
704 } 865 }
866
867 FUBd;
705 } 868 }
706 869
707 return res; 870 return res;
708} 871}
709 872
710/* read a full directory */ 873#ifdef PAGESIZE
711static void scandir_ (eio_req *req, worker *self) 874# define eio_pagesize() PAGESIZE
875#else
876static intptr_t
877eio_pagesize (void)
712{ 878{
713 DIR *dirp; 879 static intptr_t page;
714 union
715 {
716 EIO_STRUCT_DIRENT d;
717 char b [offsetof (EIO_STRUCT_DIRENT, d_name) + NAME_MAX + 1];
718 } *u;
719 EIO_STRUCT_DIRENT *entp;
720 char *name, *names;
721 int memlen = 4096;
722 int memofs = 0;
723 int res = 0;
724 880
725 X_LOCK (wrklock); 881 if (!page)
726 self->dirp = dirp = opendir (req->ptr1); 882 page = sysconf (_SC_PAGESIZE);
727 self->dbuf = u = malloc (sizeof (*u));
728 req->flags |= EIO_FLAG_PTR2_FREE;
729 req->ptr2 = names = malloc (memlen);
730 X_UNLOCK (wrklock);
731 883
732 if (dirp && u && names) 884 return page;
733 for (;;) 885}
886#endif
887
888static void
889eio_page_align (void **addr, size_t *length)
890{
891 intptr_t mask = eio_pagesize () - 1;
892
893 /* round down addr */
894 intptr_t adj = mask & (intptr_t)*addr;
895
896 *addr = (void *)((intptr_t)*addr - adj);
897 *length += adj;
898
899 /* round up length */
900 *length = (*length + mask) & ~mask;
901}
902
903#if !_POSIX_MEMLOCK
904# define eio__mlockall(a) EIO_ENOSYS ()
905#else
906
907static int
908eio__mlockall (int flags)
909{
910 #if __GLIBC__ == 2 && __GLIBC_MINOR__ <= 7
911 extern int mallopt (int, int);
912 mallopt (-6, 238); /* http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=473812 */
913 #endif
914
915 #ifndef MCL_ONFAULT
916 if (flags & EIO_MCL_ONFAULT)
917 return EIO_ERRNO (EINVAL, -1);
918 #define MCL_ONFAULT 4
919 #endif
920
921 if (EIO_MCL_CURRENT != MCL_CURRENT
922 || EIO_MCL_FUTURE != MCL_FUTURE
923 || EIO_MCL_ONFAULT != MCL_ONFAULT)
924 {
925 flags = 0
926 | (flags & EIO_MCL_CURRENT ? MCL_CURRENT : 0)
927 | (flags & EIO_MCL_FUTURE ? MCL_FUTURE : 0)
928 | (flags & EIO_MCL_ONFAULT ? MCL_ONFAULT : 0)
929 ;
930 }
931
932 return mlockall (flags);
933}
934#endif
935
936#if !_POSIX_MEMLOCK_RANGE
937# define eio__mlock(a,b) EIO_ENOSYS ()
938#else
939
940static int
941eio__mlock (void *addr, size_t length)
942{
943 eio_page_align (&addr, &length);
944
945 return mlock (addr, length);
946}
947
948#endif
949
950#if !(_POSIX_MAPPED_FILES && _POSIX_SYNCHRONIZED_IO)
951# define eio__msync(a,b,c) EIO_ENOSYS ()
952#else
953
954static int
955eio__msync (void *mem, size_t len, int flags)
956{
957 eio_page_align (&mem, &len);
958
959 if (EIO_MS_ASYNC != MS_SYNC
960 || EIO_MS_INVALIDATE != MS_INVALIDATE
961 || EIO_MS_SYNC != MS_SYNC)
962 {
963 flags = 0
964 | (flags & EIO_MS_ASYNC ? MS_ASYNC : 0)
965 | (flags & EIO_MS_INVALIDATE ? MS_INVALIDATE : 0)
966 | (flags & EIO_MS_SYNC ? MS_SYNC : 0);
967 }
968
969 return msync (mem, len, flags);
970}
971
972#endif
973
974static int
975eio__mtouch (eio_req *req)
976{
977 void *mem = req->ptr2;
978 size_t len = req->size;
979 int flags = req->int1;
980
981 eio_page_align (&mem, &len);
982
983 {
984 intptr_t addr = (intptr_t)mem;
985 intptr_t end = addr + len;
986 intptr_t page = eio_pagesize ();
987
988 if (addr < end)
989 if (flags & EIO_MT_MODIFY) /* modify */
990 do { *((volatile sig_atomic_t *)addr) |= 0; } while ((addr += page) < end && !EIO_CANCELLED (req));
991 else
992 do { *((volatile sig_atomic_t *)addr) ; } while ((addr += page) < end && !EIO_CANCELLED (req));
993 }
994
995 return 0;
996}
997
998/*****************************************************************************/
999/* requests implemented outside eio_execute, because they are so large */
1000
1001static void
1002eio__lseek (eio_req *req)
1003{
1004 /* this usually gets optimised away completely, or your compiler sucks, */
1005 /* or the whence constants really are not 0, 1, 2 */
1006 int whence = req->int2 == EIO_SEEK_SET ? SEEK_SET
1007 : req->int2 == EIO_SEEK_CUR ? SEEK_CUR
1008 : req->int2 == EIO_SEEK_END ? SEEK_END
1009 : req->int2;
1010
1011 req->offs = lseek (req->int1, req->offs, whence);
1012 req->result = req->offs == (off_t)-1 ? -1 : 0;
1013}
1014
1015/* result will always end up in tmpbuf, there is always space for adding a 0-byte */
1016static int
1017eio__realpath (struct etp_tmpbuf *tmpbuf, eio_wd wd, const char *path)
1018{
1019 char *res;
1020 const char *rel = path;
1021 char *tmp1, *tmp2;
1022#if SYMLOOP_MAX > 32
1023 int symlinks = SYMLOOP_MAX;
1024#else
1025 int symlinks = 32;
1026#endif
1027
1028 errno = EINVAL;
1029 if (!rel)
1030 return -1;
1031
1032 errno = ENOENT;
1033 if (!*rel)
1034 return -1;
1035
1036 res = etp_tmpbuf_get (tmpbuf, EIO_PATH_MAX * 3);
1037#ifdef _WIN32
1038 if (_access (rel, 4) != 0)
1039 return -1;
1040
1041 symlinks = GetFullPathName (rel, EIO_PATH_MAX * 3, res, 0);
1042
1043 errno = ENAMETOOLONG;
1044 if (symlinks >= EIO_PATH_MAX * 3)
1045 return -1;
1046
1047 errno = EIO;
1048 if (symlinks <= 0)
1049 return -1;
1050
1051 return symlinks;
1052
1053#else
1054 tmp1 = res + EIO_PATH_MAX;
1055 tmp2 = tmp1 + EIO_PATH_MAX;
1056
1057#if 0 /* disabled, the musl way to do things is just too racy */
1058#if __linux && defined(O_NONBLOCK) && defined(O_NOATIME)
1059 /* on linux we may be able to ask the kernel */
1060 {
1061 int fd = open (rel, O_RDONLY | O_NONBLOCK | O_NOCTTY | O_NOATIME);
1062
1063 if (fd >= 0)
734 { 1064 {
1065 sprintf (tmp1, "/proc/self/fd/%d", fd);
1066 req->result = readlink (tmp1, res, EIO_PATH_MAX);
1067 /* here we should probably stat the open file and the disk file, to make sure they still match */
1068 eio__close (fd);
1069
1070 if (req->result > 0)
1071 goto done;
1072 }
1073 else if (errno == ELOOP || errno == ENAMETOOLONG || errno == ENOENT || errno == ENOTDIR || errno == EIO)
1074 return -1;
1075 }
1076#endif
1077#endif
1078
1079 if (*rel != '/')
1080 {
1081 int len;
1082
735 errno = 0; 1083 errno = ENOENT;
736 readdir_r (dirp, &u->d, &entp); 1084 if (wd == EIO_INVALID_WD)
1085 return -1;
1086
1087 if (wd == EIO_CWD)
1088 {
1089 if (!getcwd (res, EIO_PATH_MAX))
1090 return -1;
737 1091
738 if (!entp) 1092 len = strlen (res);
1093 }
1094 else
1095 memcpy (res, wd->str, len = wd->len);
1096
1097 if (res [1]) /* only use if not / */
1098 res += len;
1099 }
1100
1101 while (*rel)
1102 {
1103 eio_ssize_t len, linklen;
1104 const char *beg = rel;
1105
1106 while (*rel && *rel != '/')
1107 ++rel;
1108
1109 len = rel - beg;
1110
1111 if (!len) /* skip slashes */
1112 {
739 break; 1113 ++rel;
1114 continue;
1115 }
740 1116
741 name = entp->d_name; 1117 if (beg [0] == '.')
1118 {
1119 if (len == 1)
1120 continue; /* . - nop */
742 1121
743 if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2]))) 1122 if (beg [1] == '.' && len == 2)
1123 {
1124 /* .. - back up one component, if possible */
1125
1126 while (res != tmpbuf->ptr)
1127 if (*--res == '/')
1128 break;
1129
1130 continue;
1131 }
1132 }
1133
1134 errno = ENAMETOOLONG;
1135 if (res + 1 + len + 1 >= tmp1)
1136 return -1;
1137
1138 /* copy one component */
1139 *res = '/';
1140 memcpy (res + 1, beg, len);
1141
1142 /* zero-terminate, for readlink */
1143 res [len + 1] = 0;
1144
1145 /* now check if it's a symlink */
1146 linklen = readlink (tmpbuf->ptr, tmp1, EIO_PATH_MAX);
1147
1148 if (linklen < 0)
744 { 1149 {
745 int len = strlen (name) + 1; 1150 if (errno != EINVAL)
1151 return -1;
746 1152
747 res++; 1153 /* it's a normal directory. hopefully */
748
749 while (memofs + len > memlen)
750 {
751 memlen *= 2;
752 X_LOCK (wrklock);
753 req->ptr2 = names = realloc (names, memlen);
754 X_UNLOCK (wrklock);
755
756 if (!names)
757 break;
758 }
759
760 memcpy (names + memofs, name, len);
761 memofs += len; 1154 res += len + 1;
762 }
763 }
764
765 if (errno)
766 res = -1;
767
768 req->result = res;
769}
770
771/*****************************************************************************/
772
773X_THREAD_PROC (eio_proc)
774{
775 eio_req *req;
776 struct timespec ts;
777 worker *self = (worker *)thr_arg;
778
779 /* try to distribute timeouts somewhat randomly */
780 ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL);
781
782 for (;;)
783 {
784 ts.tv_sec = time (0) + IDLE_TIMEOUT;
785
786 X_LOCK (reqlock);
787
788 for (;;)
789 {
790 self->req = req = reqq_shift (&req_queue);
791
792 if (req)
793 break;
794
795 ++idle;
796
797 if (X_COND_TIMEDWAIT (reqwait, reqlock, ts) == ETIMEDOUT)
798 {
799 if (idle > max_idle)
800 {
801 --idle;
802 X_UNLOCK (reqlock);
803 X_LOCK (wrklock);
804 --started;
805 X_UNLOCK (wrklock);
806 goto quit;
807 }
808
809 /* we are allowed to idle, so do so without any timeout */
810 X_COND_WAIT (reqwait, reqlock);
811 ts.tv_sec = time (0) + IDLE_TIMEOUT;
812 }
813
814 --idle;
815 }
816
817 --nready;
818
819 X_UNLOCK (reqlock);
820
821 errno = 0; /* strictly unnecessary */
822
823 if (!EIO_CANCELLED (req))
824 switch (req->type)
825 {
826 case EIO_READ: req->result = req->offs >= 0
827 ? pread (req->int1, req->ptr2, req->size, req->offs)
828 : read (req->int1, req->ptr2, req->size); break;
829 case EIO_WRITE: req->result = req->offs >= 0
830 ? pwrite (req->int1, req->ptr2, req->size, req->offs)
831 : write (req->int1, req->ptr2, req->size); break;
832
833 case EIO_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
834 case EIO_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
835
836 case EIO_STAT: req->result = stat (req->ptr1, (EIO_STRUCT_STAT *)req->ptr2); break;
837 case EIO_LSTAT: req->result = lstat (req->ptr1, (EIO_STRUCT_STAT *)req->ptr2); break;
838 case EIO_FSTAT: req->result = fstat (req->int1, (EIO_STRUCT_STAT *)req->ptr2); break;
839
840 case EIO_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break;
841 case EIO_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
842 case EIO_CHMOD: req->result = chmod (req->ptr1, (mode_t)req->int2); break;
843 case EIO_FCHMOD: req->result = fchmod (req->int1, (mode_t)req->int2); break;
844 case EIO_TRUNCATE: req->result = truncate (req->ptr1, req->offs); break;
845 case EIO_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break;
846
847 case EIO_OPEN: req->result = open (req->ptr1, req->int1, (mode_t)req->int2); break;
848 case EIO_CLOSE: req->result = close (req->int1); break;
849 case EIO_DUP2: req->result = dup2 (req->int1, req->int2); break;
850 case EIO_UNLINK: req->result = unlink (req->ptr1); break;
851 case EIO_RMDIR: req->result = rmdir (req->ptr1); break;
852 case EIO_MKDIR: req->result = mkdir (req->ptr1, (mode_t)req->int2); break;
853 case EIO_RENAME: req->result = rename (req->ptr1, req->ptr2); break;
854 case EIO_LINK: req->result = link (req->ptr1, req->ptr2); break;
855 case EIO_SYMLINK: req->result = symlink (req->ptr1, req->ptr2); break;
856 case EIO_MKNOD: req->result = mknod (req->ptr1, (mode_t)req->int2, (dev_t)req->offs); break;
857 case EIO_READLINK: req->result = readlink (req->ptr1, req->ptr2, NAME_MAX); break;
858
859 case EIO_SYNC: req->result = 0; sync (); break;
860 case EIO_FSYNC: req->result = fsync (req->int1); break;
861 case EIO_FDATASYNC: req->result = fdatasync (req->int1); break;
862
863 case EIO_READDIR: scandir_ (req, self); break;
864
865 case EIO_BUSY:
866#ifdef _WIN32
867 Sleep (req->nv1 * 1000.);
868#else
869 {
870 struct timeval tv;
871
872 tv.tv_sec = req->nv1;
873 tv.tv_usec = (req->nv1 - tv.tv_sec) * 1000000.;
874
875 req->result = select (0, 0, 0, 0, &tv);
876 }
877#endif
878 break;
879
880 case EIO_UTIME:
881 case EIO_FUTIME:
882 {
883 struct timeval tv[2];
884 struct timeval *times;
885
886 if (req->nv1 != -1. || req->nv2 != -1.)
887 {
888 tv[0].tv_sec = req->nv1;
889 tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.;
890 tv[1].tv_sec = req->nv2;
891 tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.;
892
893 times = tv;
894 }
895 else
896 times = 0;
897
898
899 req->result = req->type == EIO_FUTIME
900 ? futimes (req->int1, times)
901 : utimes (req->ptr1, times);
902 }
903
904 case EIO_GROUP:
905 case EIO_NOP:
906 break;
907
908 case EIO_QUIT:
909 goto quit;
910
911 default:
912 req->result = -1;
913 break;
914 }
915
916 req->errorno = errno;
917
918 X_LOCK (reslock);
919
920 ++npending;
921
922 if (!reqq_push (&res_queue, req) && want_poll_cb)
923 want_poll_cb ();
924
925 self->req = 0;
926 worker_clear (self);
927
928 X_UNLOCK (reslock);
929 }
930
931quit:
932 X_LOCK (wrklock);
933 worker_free (self);
934 X_UNLOCK (wrklock);
935
936 return 0;
937}
938
939/*****************************************************************************/
940
941static void eio_atfork_prepare (void)
942{
943 X_LOCK (wrklock);
944 X_LOCK (reqlock);
945 X_LOCK (reslock);
946#if !HAVE_PREADWRITE
947 X_LOCK (preadwritelock);
948#endif
949#if !HAVE_READDIR_R
950 X_LOCK (readdirlock);
951#endif
952}
953
954static void eio_atfork_parent (void)
955{
956#if !HAVE_READDIR_R
957 X_UNLOCK (readdirlock);
958#endif
959#if !HAVE_PREADWRITE
960 X_UNLOCK (preadwritelock);
961#endif
962 X_UNLOCK (reslock);
963 X_UNLOCK (reqlock);
964 X_UNLOCK (wrklock);
965}
966
967static void eio_atfork_child (void)
968{
969 eio_req *prv;
970
971 while (prv = reqq_shift (&req_queue))
972 eio_destroy (prv);
973
974 while (prv = reqq_shift (&res_queue))
975 eio_destroy (prv);
976
977 while (wrk_first.next != &wrk_first)
978 {
979 worker *wrk = wrk_first.next;
980
981 if (wrk->req)
982 eio_destroy (wrk->req);
983
984 worker_clear (wrk);
985 worker_free (wrk);
986 }
987
988 started = 0;
989 idle = 0;
990 nreqs = 0;
991 nready = 0;
992 npending = 0;
993
994 eio_atfork_parent ();
995}
996
997int eio_init (void (*want_poll)(void), void (*done_poll)(void))
998{
999 want_poll_cb = want_poll;
1000 done_poll_cb = done_poll;
1001
1002#ifdef _WIN32
1003 X_MUTEX_CHECK (wrklock);
1004 X_MUTEX_CHECK (reslock);
1005 X_MUTEX_CHECK (reqlock);
1006 X_MUTEX_CHECK (reqwait);
1007 X_MUTEX_CHECK (preadwritelock);
1008 X_MUTEX_CHECK (readdirlock);
1009
1010 X_COND_CHECK (reqwait);
1011#endif
1012
1013 X_THREAD_ATFORK (eio_atfork_prepare, eio_atfork_parent, eio_atfork_child);
1014}
1015
1016#if 0
1017
1018eio_req *eio_fsync (int fd, eio_cb cb);
1019eio_req *eio_fdatasync (int fd, eio_cb cb);
1020eio_req *eio_dupclose (int fd, eio_cb cb);
1021eio_req *eio_readahead (int fd, off_t offset, size_t length, eio_cb cb);
1022eio_req *eio_read (int fd, off_t offs, size_t length, char *data, eio_cb cb);
1023eio_req *eio_write (int fd, off_t offs, size_t length, char *data, eio_cb cb);
1024eio_req *eio_fstat (int fd, eio_cb cb); /* stat buffer=ptr2 allocates dynamically */
1025eio_req *eio_futime (int fd, double atime, double mtime, eio_cb cb);
1026eio_req *eio_ftruncate (int fd, off_t offset, eio_cb cb);
1027eio_req *eio_fchmod (int fd, mode_t mode, eio_cb cb);
1028eio_req *eio_fchown (int fd, uid_t uid, gid_t gid, eio_cb cb);
1029eio_req *eio_dup2 (int fd, int fd2, eio_cb cb);
1030eio_req *eio_sendfile (int out_fd, int in_fd, off_t in_offset, size_t length, eio_cb cb);
1031eio_req *eio_open (const char *path, int flags, mode_t mode, eio_cb cb);
1032eio_req *eio_readlink (const char *path, eio_cb cb); /* result=ptr2 allocated dynamically */
1033eio_req *eio_stat (const char *path, eio_cb cb); /* stat buffer=ptr2 allocates dynamically */
1034eio_req *eio_lstat (const char *path, eio_cb cb); /* stat buffer=ptr2 allocates dynamically */
1035eio_req *eio_utime (const char *path, double atime, double mtime, eio_cb cb);
1036eio_req *eio_truncate (const char *path, off_t offset, eio_cb cb);
1037eio_req *eio_chmod (const char *path, mode_t mode, eio_cb cb);
1038eio_req *eio_mkdir (const char *path, mode_t mode, eio_cb cb);
1039eio_req *eio_chown (const char *path, uid_t uid, gid_t gid, eio_cb cb);
1040eio_req *eio_unlink (const char *path, eio_cb cb);
1041eio_req *eio_rmdir (const char *path, eio_cb cb);
1042eio_req *eio_readdir (const char *path, eio_cb cb); /* result=ptr2 allocated dynamically */
1043eio_req *eio_mknod (const char *path, mode_t mode, dev_t dev, eio_cb cb);
1044eio_req *eio_busy (double delay, eio_cb cb); /* ties a thread for this long, simulating busyness */
1045eio_req *eio_nop (eio_cb cb); /* does nothing except go through the whole process */
1046void
1047aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1048 PROTOTYPE: $$$;$
1049 PPCODE:
1050{
1051 dREQ;
1052
1053 req->type = EIO_OPEN;
1054 req->sv1 = newSVsv (pathname);
1055 req->ptr1 = SvPVbyte_nolen (req->sv1);
1056 req->int1 = flags;
1057 req->int2 = mode;
1058
1059 EIO_SEND;
1060}
1061
1062void
1063aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1064 PROTOTYPE: $;$
1065 ALIAS:
1066 aio_fsync = EIO_FSYNC
1067 aio_fdatasync = EIO_FDATASYNC
1068 PPCODE:
1069{
1070 dREQ;
1071
1072 req->type = ix;
1073 req->sv1 = newSVsv (fh);
1074 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1075
1076 EIO_SEND (req);
1077}
1078
1079void
1080aio_close (SV *fh, SV *callback=&PL_sv_undef)
1081 PROTOTYPE: $;$
1082 PPCODE:
1083{
1084 dREQ;
1085
1086 req->type = EIO_CLOSE;
1087 req->sv1 = newSVsv (fh);
1088 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1089
1090 EIO_SEND (req);
1091}
1092
1093void
1094aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1095 ALIAS:
1096 aio_read = EIO_READ
1097 aio_write = EIO_WRITE
1098 PROTOTYPE: $$$$$;$
1099 PPCODE:
1100{
1101 STRLEN svlen;
1102 char *svptr = SvPVbyte (data, svlen);
1103 UV len = SvUV (length);
1104
1105 SvUPGRADE (data, SVt_PV);
1106 SvPOK_on (data);
1107
1108 if (dataoffset < 0)
1109 dataoffset += svlen;
1110
1111 if (dataoffset < 0 || dataoffset > svlen)
1112 croak ("dataoffset outside of data scalar");
1113
1114 if (ix == EIO_WRITE)
1115 {
1116 /* write: check length and adjust. */
1117 if (!SvOK (length) || len + dataoffset > svlen)
1118 len = svlen - dataoffset;
1119 } 1155 }
1120 else 1156 else
1121 { 1157 {
1122 /* read: grow scalar as necessary */ 1158 /* yay, it was a symlink - build new path in tmp2 */
1123 svptr = SvGROW (data, len + dataoffset + 1); 1159 int rellen = strlen (rel);
1160
1161 errno = ENAMETOOLONG;
1162 if (linklen + 1 + rellen >= EIO_PATH_MAX) /* also catch linklen >= EIO_PATH_MAX */
1163 return -1;
1164
1165 errno = ELOOP;
1166 if (!--symlinks)
1167 return -1;
1168
1169 if (*tmp1 == '/')
1170 res = tmpbuf->ptr; /* symlink resolves to an absolute path */
1171
1172 /* we need to be careful, as rel might point into tmp2 already */
1173 memmove (tmp2 + linklen + 1, rel, rellen + 1);
1174 tmp2 [linklen] = '/';
1175 memcpy (tmp2, tmp1, linklen);
1176
1177 rel = tmp2;
1124 } 1178 }
1179 }
1125 1180
1181 /* special case for the lone root path */
1182 if (res == tmpbuf->ptr)
1183 *res++ = '/';
1184
1185 return res - (char *)tmpbuf->ptr;
1186#endif
1187}
1188
1189static signed char
1190eio_dent_cmp (const eio_dirent *a, const eio_dirent *b)
1191{
1192 return a->score - b->score ? a->score - b->score /* works because our signed char is always 0..100 */
1193 : a->inode < b->inode ? -1
1194 : a->inode > b->inode ? 1
1195 : 0;
1196}
1197
1198#define EIO_DENT_CMP(i,op,j) eio_dent_cmp (&i, &j) op 0
1199
1200#define EIO_SORT_CUTOFF 30 /* quite high, but performs well on many filesystems */
1201#define EIO_SORT_FAST 60 /* when to only use insertion sort */
1202
1203static void
1204eio_dent_radix_sort (eio_dirent *dents, int size, signed char score_bits, eio_ino_t inode_bits)
1205{
1206 unsigned char bits [9 + sizeof (eio_ino_t) * 8];
1207 unsigned char *bit = bits;
1208
1209 assert (CHAR_BIT == 8);
1210 assert (sizeof (eio_dirent) * 8 < 256);
1211 assert (offsetof (eio_dirent, inode)); /* we use bit #0 as sentinel */
1212 assert (offsetof (eio_dirent, score)); /* we use bit #0 as sentinel */
1213
1214 if (size <= EIO_SORT_FAST)
1215 return;
1216
1217 /* first prepare an array of bits to test in our radix sort */
1218 /* try to take endianness into account, as well as differences in eio_ino_t sizes */
1219 /* inode_bits must contain all inodes ORed together */
1220 /* which is used to skip bits that are 0 everywhere, which is very common */
1221 {
1222 eio_ino_t endianness;
1223 int i, j;
1224
1225 /* we store the byte offset of byte n into byte n of "endianness" */
1226 for (i = 0; i < sizeof (eio_ino_t); ++i)
1227 ((unsigned char *)&endianness)[i] = i;
1228
1229 *bit++ = 0;
1230
1231 for (i = 0; i < sizeof (eio_ino_t); ++i)
1232 {
1233 /* shifting off the byte offsets out of "endianness" */
1234 int offs = (offsetof (eio_dirent, inode) + (endianness & 0xff)) * 8;
1235 endianness >>= 8;
1236
1237 for (j = 0; j < 8; ++j)
1238 if (inode_bits & (((eio_ino_t)1) << (i * 8 + j)))
1239 *bit++ = offs + j;
1240 }
1241
1242 for (j = 0; j < 8; ++j)
1243 if (score_bits & (1 << j))
1244 *bit++ = offsetof (eio_dirent, score) * 8 + j;
1245 }
1246
1247 /* now actually do the sorting (a variant of MSD radix sort) */
1248 {
1249 eio_dirent *base_stk [9 + sizeof (eio_ino_t) * 8], *base;
1250 eio_dirent *end_stk [9 + sizeof (eio_ino_t) * 8], *end;
1251 unsigned char *bit_stk [9 + sizeof (eio_ino_t) * 8];
1252 int stk_idx = 0;
1253
1254 base_stk [stk_idx] = dents;
1255 end_stk [stk_idx] = dents + size;
1256 bit_stk [stk_idx] = bit - 1;
1257
1258 do
1259 {
1260 base = base_stk [stk_idx];
1261 end = end_stk [stk_idx];
1262 bit = bit_stk [stk_idx];
1263
1264 for (;;)
1265 {
1266 unsigned char O = *bit >> 3;
1267 unsigned char M = 1 << (*bit & 7);
1268
1269 eio_dirent *a = base;
1270 eio_dirent *b = end;
1271
1272 if (b - a < EIO_SORT_CUTOFF)
1273 break;
1274
1275 /* now bit-partition the array on the bit */
1276 /* this ugly asymmetric loop seems to perform much better than typical */
1277 /* partition algos found in the literature */
1278 do
1279 if (!(((unsigned char *)a)[O] & M))
1280 ++a;
1281 else if (!(((unsigned char *)--b)[O] & M))
1282 {
1283 eio_dirent tmp = *a; *a = *b; *b = tmp;
1284 ++a;
1285 }
1286 while (b > a);
1287
1288 /* next bit, or stop, if no bits left in this path */
1289 if (!*--bit)
1290 break;
1291
1292 base_stk [stk_idx] = a;
1293 end_stk [stk_idx] = end;
1294 bit_stk [stk_idx] = bit;
1295 ++stk_idx;
1296
1297 end = a;
1298 }
1299 }
1300 while (stk_idx--);
1301 }
1302}
1303
1304static void
1305eio_dent_insertion_sort (eio_dirent *dents, int size)
1306{
1307 /* first move the smallest element to the front, to act as a sentinel */
1308 {
1309 int i;
1310 eio_dirent *min = dents;
1311
1312 /* the radix pre-pass ensures that the minimum element is in the first EIO_SORT_CUTOFF + 1 elements */
1313 for (i = size > EIO_SORT_FAST ? EIO_SORT_CUTOFF + 1 : size; --i; )
1314 if (EIO_DENT_CMP (dents [i], <, *min))
1315 min = &dents [i];
1316
1317 /* swap elements 0 and j (minimum) */
1318 {
1319 eio_dirent tmp = *dents; *dents = *min; *min = tmp;
1320 }
1321 }
1322
1323 /* then do standard insertion sort, assuming that all elements are >= dents [0] */
1324 {
1325 eio_dirent *i, *j;
1326
1327 for (i = dents + 1; i < dents + size; ++i)
1328 {
1329 eio_dirent value = *i;
1330
1331 for (j = i - 1; EIO_DENT_CMP (*j, >, value); --j)
1332 j [1] = j [0];
1333
1334 j [1] = value;
1335 }
1336 }
1337}
1338
1339static void
1340eio_dent_sort (eio_dirent *dents, int size, signed char score_bits, eio_ino_t inode_bits)
1341{
1342 if (size <= 1)
1343 return; /* our insertion sort relies on size > 0 */
1344
1345 /* first we use a radix sort, but only for dirs >= EIO_SORT_FAST */
1346 /* and stop sorting when the partitions are <= EIO_SORT_CUTOFF */
1347 eio_dent_radix_sort (dents, size, score_bits, inode_bits);
1348
1349 /* use an insertion sort at the end, or for small arrays, */
1350 /* as insertion sort is more efficient for small partitions */
1351 eio_dent_insertion_sort (dents, size);
1352}
1353
1354/* read a full directory */
1355static void
1356eio__scandir (eio_req *req, etp_worker *self)
1357{
1358 char *name, *names;
1359 int namesalloc = 4096 - sizeof (void *) * 4;
1360 int namesoffs = 0;
1361 int flags = req->int1;
1362 eio_dirent *dents = 0;
1363 int dentalloc = 128;
1364 int dentoffs = 0;
1365 eio_ino_t inode_bits = 0;
1366#ifdef _WIN32
1367 HANDLE dirp;
1368 WIN32_FIND_DATA entp;
1369#else
1370 DIR *dirp;
1371 EIO_STRUCT_DIRENT *entp;
1372#endif
1373
1374 req->result = -1;
1375
1376 if (!(flags & EIO_READDIR_DENTS))
1377 flags &= ~(EIO_READDIR_DIRS_FIRST | EIO_READDIR_STAT_ORDER);
1378
1379#ifdef _WIN32
1380 {
1381 int len = strlen ((const char *)req->ptr1);
1382 char *path = malloc (MAX_PATH);
1383 const char *fmt;
1384 const char *reqpath = wd_expand (&self->tmpbuf, req->wd, req->ptr1);
1385
1386 if (!len)
1387 fmt = "./*";
1388 else if (reqpath[len - 1] == '/' || reqpath[len - 1] == '\\')
1389 fmt = "%s*";
1390 else
1391 fmt = "%s/*";
1392
1393 _snprintf (path, MAX_PATH, fmt, reqpath);
1394 dirp = FindFirstFile (path, &entp);
1395 free (path);
1396
1397 if (dirp == INVALID_HANDLE_VALUE)
1398 {
1399 /* should steal _dosmaperr */
1400 switch (GetLastError ())
1401 {
1402 case ERROR_FILE_NOT_FOUND:
1403 req->result = 0;
1404 break;
1405
1406 case ERROR_INVALID_NAME:
1407 case ERROR_PATH_NOT_FOUND:
1408 case ERROR_NO_MORE_FILES:
1409 errno = ENOENT;
1410 break;
1411
1412 case ERROR_NOT_ENOUGH_MEMORY:
1413 errno = ENOMEM;
1414 break;
1415
1416 default:
1417 errno = EINVAL;
1418 break;
1419 }
1420
1421 return;
1422 }
1423 }
1424#else
1425 #if HAVE_AT
1426 {
1427 int fd = openat (WD2FD (req->wd), req->ptr1, O_CLOEXEC | O_RDONLY | O_DIRECTORY | O_NONBLOCK);
1428
1126 if (len < 0) 1429 if (fd < 0)
1127 croak ("length must not be negative"); 1430 return;
1128 1431
1432 dirp = fdopendir (fd);
1433
1434 if (!dirp)
1129 { 1435 {
1130 dREQ; 1436 silent_close (fd);
1437 return;
1438 }
1439 }
1440 #else
1441 dirp = opendir (wd_expand (&self->tmpbuf, req->wd, req->ptr1));
1131 1442
1132 req->type = ix; 1443 if (!dirp)
1133 req->sv1 = newSVsv (fh); 1444 return;
1134 req->int1 = PerlIO_fileno (ix == EIO_READ ? IoIFP (sv_2io (fh)) 1445 #endif
1135 : IoOFP (sv_2io (fh))); 1446#endif
1136 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1137 req->size = len;
1138 req->sv2 = SvREFCNT_inc (data);
1139 req->ptr2 = (char *)svptr + dataoffset;
1140 req->stroffset = dataoffset;
1141 1447
1142 if (!SvREADONLY (data)) 1448 if (req->flags & EIO_FLAG_PTR1_FREE)
1449 free (req->ptr1);
1450
1451 req->flags |= EIO_FLAG_PTR1_FREE | EIO_FLAG_PTR2_FREE;
1452 req->ptr1 = dents = flags ? malloc (dentalloc * sizeof (eio_dirent)) : 0;
1453 req->ptr2 = names = malloc (namesalloc);
1454
1455 if (!names || (flags && !dents))
1456 return;
1457
1458 for (;;)
1459 {
1460 int done;
1461
1462#ifdef _WIN32
1463 done = !dirp;
1464#else
1465 errno = 0;
1466 entp = readdir (dirp);
1467 done = !entp;
1468#endif
1469
1470 if (done)
1471 {
1472#ifndef _WIN32
1473 int old_errno = errno;
1474 closedir (dirp);
1475 errno = old_errno;
1476
1477 if (errno)
1478 break;
1479#endif
1480
1481 /* sort etc. */
1482 req->int1 = flags;
1483 req->result = dentoffs;
1484
1485 if (flags & EIO_READDIR_STAT_ORDER)
1486 eio_dent_sort (dents, dentoffs, flags & EIO_READDIR_DIRS_FIRST ? 7 : 0, inode_bits);
1487 else if (flags & EIO_READDIR_DIRS_FIRST)
1488 if (flags & EIO_READDIR_FOUND_UNKNOWN)
1489 eio_dent_sort (dents, dentoffs, 7, inode_bits); /* sort by score and inode */
1490 else
1491 {
1492 /* in this case, all is known, and we just put dirs first and sort them */
1493 eio_dirent *oth = dents + dentoffs;
1494 eio_dirent *dir = dents;
1495
1496 /* now partition dirs to the front, and non-dirs to the back */
1497 /* by walking from both sides and swapping if necessary */
1498 while (oth > dir)
1499 {
1500 if (dir->type == EIO_DT_DIR)
1501 ++dir;
1502 else if ((--oth)->type == EIO_DT_DIR)
1503 {
1504 eio_dirent tmp = *dir; *dir = *oth; *oth = tmp;
1505
1506 ++dir;
1507 }
1508 }
1509
1510 /* now sort the dirs only (dirs all have the same score) */
1511 eio_dent_sort (dents, dir - dents, 0, inode_bits);
1512 }
1513
1514 break;
1515 }
1516
1517 /* now add the entry to our list(s) */
1518 name = D_NAME (entp);
1519
1520 /* skip . and .. entries */
1521 if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1522 {
1523 int len = D_NAMLEN (entp) + 1;
1524
1525 while (ecb_expect_false (namesoffs + len > namesalloc))
1143 { 1526 {
1144 SvREADONLY_on (data); 1527 namesalloc *= 2;
1145 req->flags |= FLAG_SV2_RO_OFF; 1528 req->ptr2 = names = realloc (names, namesalloc);
1529
1530 if (!names)
1531 break;
1146 } 1532 }
1147 1533
1148 EIO_SEND; 1534 memcpy (names + namesoffs, name, len);
1535
1536 if (dents)
1537 {
1538 struct eio_dirent *ent;
1539
1540 if (ecb_expect_false (dentoffs == dentalloc))
1541 {
1542 dentalloc *= 2;
1543 req->ptr1 = dents = realloc (dents, dentalloc * sizeof (eio_dirent));
1544
1545 if (!dents)
1546 break;
1547 }
1548
1549 ent = dents + dentoffs;
1550
1551 ent->nameofs = namesoffs; /* rather dirtily we store the offset in the pointer */
1552 ent->namelen = len - 1;
1553 ent->inode = D_INO (entp);
1554
1555 inode_bits |= ent->inode;
1556
1557 switch (D_TYPE (entp))
1558 {
1559 default:
1560 ent->type = EIO_DT_UNKNOWN;
1561 flags |= EIO_READDIR_FOUND_UNKNOWN;
1562 break;
1563
1564 #ifdef DT_FIFO
1565 case DT_FIFO: ent->type = EIO_DT_FIFO; break;
1566 #endif
1567 #ifdef DT_CHR
1568 case DT_CHR: ent->type = EIO_DT_CHR; break;
1569 #endif
1570 #ifdef DT_MPC
1571 case DT_MPC: ent->type = EIO_DT_MPC; break;
1572 #endif
1573 #ifdef DT_DIR
1574 case DT_DIR: ent->type = EIO_DT_DIR; break;
1575 #endif
1576 #ifdef DT_NAM
1577 case DT_NAM: ent->type = EIO_DT_NAM; break;
1578 #endif
1579 #ifdef DT_BLK
1580 case DT_BLK: ent->type = EIO_DT_BLK; break;
1581 #endif
1582 #ifdef DT_MPB
1583 case DT_MPB: ent->type = EIO_DT_MPB; break;
1584 #endif
1585 #ifdef DT_REG
1586 case DT_REG: ent->type = EIO_DT_REG; break;
1587 #endif
1588 #ifdef DT_NWK
1589 case DT_NWK: ent->type = EIO_DT_NWK; break;
1590 #endif
1591 #ifdef DT_CMP
1592 case DT_CMP: ent->type = EIO_DT_CMP; break;
1593 #endif
1594 #ifdef DT_LNK
1595 case DT_LNK: ent->type = EIO_DT_LNK; break;
1596 #endif
1597 #ifdef DT_SOCK
1598 case DT_SOCK: ent->type = EIO_DT_SOCK; break;
1599 #endif
1600 #ifdef DT_DOOR
1601 case DT_DOOR: ent->type = EIO_DT_DOOR; break;
1602 #endif
1603 #ifdef DT_WHT
1604 case DT_WHT: ent->type = EIO_DT_WHT; break;
1605 #endif
1606 }
1607
1608 ent->score = 7;
1609
1610 if (flags & EIO_READDIR_DIRS_FIRST)
1611 {
1612 if (ent->type == EIO_DT_UNKNOWN)
1613 {
1614 if (*name == '.') /* leading dots are likely directories, and, in any case, rare */
1615 ent->score = 1;
1616 else if (!strchr (name, '.')) /* absence of dots indicate likely dirs */
1617 ent->score = len <= 2 ? 4 - len : len <= 4 ? 4 : len <= 7 ? 5 : 6; /* shorter == more likely dir, but avoid too many classes */
1618 }
1619 else if (ent->type == EIO_DT_DIR)
1620 ent->score = 0;
1621 }
1622 }
1623
1624 namesoffs += len;
1625 ++dentoffs;
1149 } 1626 }
1627
1628 if (EIO_CANCELLED (req))
1629 {
1630 errno = ECANCELED;
1631 break;
1632 }
1633
1634#ifdef _WIN32
1635 if (!FindNextFile (dirp, &entp))
1636 {
1637 FindClose (dirp);
1638 dirp = 0;
1639 }
1640#endif
1641 }
1642}
1643
1644/*****************************************************************************/
1645/* working directory stuff */
1646/* various deficiencies in the posix 2008 api force us to */
1647/* keep the absolute path in string form at all times */
1648/* fuck yeah. */
1649
1650#if !HAVE_AT
1651
1652/* a bit like realpath, but usually faster because it doesn't have to return */
1653/* an absolute or canonical path */
1654static const char *
1655wd_expand (struct etp_tmpbuf *tmpbuf, eio_wd wd, const char *path)
1656{
1657 if (!wd || *path == '/')
1658 return path;
1659
1660 if (path [0] == '.' && !path [1])
1661 return wd->str;
1662
1663 {
1664 int l1 = wd->len;
1665 int l2 = strlen (path);
1666
1667 char *res = etp_tmpbuf_get (tmpbuf, l1 + l2 + 2);
1668
1669 memcpy (res, wd->str, l1);
1670 res [l1] = '/';
1671 memcpy (res + l1 + 1, path, l2 + 1);
1672
1673 return res;
1674 }
1675}
1676
1677#endif
1678
1679static eio_wd
1680eio__wd_open_sync (struct etp_tmpbuf *tmpbuf, eio_wd wd, const char *path)
1681{
1682 int fd;
1683 eio_wd res;
1684 int len = eio__realpath (tmpbuf, wd, path);
1685
1686 if (len < 0)
1687 return EIO_INVALID_WD;
1688
1689#if HAVE_AT
1690 fd = openat (WD2FD (wd), path, EIO_O_PATH | O_DIRECTORY | O_NONBLOCK | O_CLOEXEC);
1691
1692 /* 0 is a valid fd, but we use it for EIO_CWD, so in the very unlikely */
1693 /* case of fd 0 being available (almost certainly an a pplication bug) */
1694 /* make sure we use another fd value */
1695 #if EIO_CWD
1696 error EIO_CWD must be 0
1697 #endif
1698 if (ecb_expect_false (fd == 0))
1699 {
1700 int fd2 = fcntl (fd, F_DUPFD_CLOEXEC ? F_DUPFD_CLOEXEC : F_DUPFD);
1701 fcntl (fd2, F_SETFD, FD_CLOEXEC);
1702 eio__close (fd);
1703 fd = fd2;
1704 }
1705
1706 if (fd < 0)
1707 return EIO_INVALID_WD;
1708#endif
1709
1710 res = malloc (sizeof (*res) + len); /* one extra 0-byte */
1711
1712#if HAVE_AT
1713 res->fd = fd;
1714#endif
1715
1716 res->len = len;
1717 memcpy (res->str, tmpbuf->ptr, len);
1718 res->str [len] = 0;
1719
1720 return res;
1721}
1722
1723eio_wd
1724eio_wd_open_sync (eio_wd wd, const char *path)
1725{
1726 struct etp_tmpbuf tmpbuf = { 0 };
1727 wd = eio__wd_open_sync (&tmpbuf, wd, path);
1728 free (tmpbuf.ptr);
1729
1730 return wd;
1150} 1731}
1151 1732
1152void 1733void
1153aio_readlink (SV8 *path, SV *callback=&PL_sv_undef) 1734eio_wd_close_sync (eio_wd wd)
1154 PROTOTYPE: $$;$
1155 PPCODE:
1156{ 1735{
1157 SV *data; 1736 if (wd != EIO_INVALID_WD && wd != EIO_CWD)
1158 dREQ; 1737 {
1159 1738 #if HAVE_AT
1160 data = newSV (NAME_MAX); 1739 eio__close (wd->fd);
1161 SvPOK_on (data); 1740 #endif
1162 1741 free (wd);
1163 req->type = EIO_READLINK; 1742 }
1164 req->sv1 = newSVsv (path);
1165 req->ptr1 = SvPVbyte_nolen (req->sv1);
1166 req->sv2 = data;
1167 req->ptr2 = SvPVbyte_nolen (data);
1168
1169 EIO_SEND;
1170} 1743}
1744
1745#if HAVE_AT
1746
1747static int
1748eio__renameat2 (int olddirfd, const char *oldpath, int newdirfd, const char *newpath, unsigned int flags)
1749{
1750#if HAVE_RENAMEAT2
1751 return syscall (SYS_renameat2, olddirfd, oldpath, newdirfd, newpath, flags);
1752#else
1753 if (flags)
1754 return EIO_ENOSYS ();
1755
1756 return renameat (olddirfd, oldpath, newdirfd, newpath);
1757#endif
1758}
1759
1760/* they forgot these */
1761
1762static int
1763eio__truncateat (int dirfd, const char *path, off_t length)
1764{
1765 int fd = openat (dirfd, path, O_WRONLY | O_CLOEXEC | O_NONBLOCK);
1766 int res;
1767
1768 if (fd < 0)
1769 return fd;
1770
1771 res = ftruncate (fd, length);
1772 silent_close (fd);
1773 return res;
1774}
1775
1776static int
1777eio__statvfsat (int dirfd, const char *path, struct statvfs *buf)
1778{
1779 int fd = openat (dirfd, path, EIO_O_PATH | O_CLOEXEC | O_NONBLOCK);
1780 int res;
1781
1782 if (fd < 0)
1783 return fd;
1784
1785 res = fstatvfs (fd, buf);
1786 silent_close (fd);
1787 return res;
1788}
1789
1790#endif
1791
1792/*****************************************************************************/
1793
1794#define ALLOC(len) \
1795 if (!req->ptr2) \
1796 { \
1797 X_LOCK (EIO_POOL->wrklock); \
1798 req->flags |= EIO_FLAG_PTR2_FREE; \
1799 X_UNLOCK (EIO_POOL->wrklock); \
1800 req->ptr2 = malloc (len); \
1801 if (!req->ptr2) \
1802 { \
1803 errno = ENOMEM; \
1804 req->result = -1; \
1805 goto alloc_fail; \
1806 } \
1807 }
1808
1809/*****************************************************************************/
1810
1811static void
1812eio__slurp (int fd, eio_req *req)
1813{
1814 req->result = fd;
1815
1816 if (fd < 0)
1817 return;
1818
1819 if (req->offs < 0 || !req->size) /* do we need the size? */
1820 {
1821 off_t size = lseek (fd, 0, SEEK_END);
1822
1823 if (req->offs < 0)
1824 req->offs += size;
1825
1826 if (!req->size)
1827 req->size = size - req->offs;
1828 }
1829
1830 ALLOC (req->size);
1831 req->result = pread (fd, req->ptr2, req->size, req->offs);
1832
1833 silent_close (fd);
1834
1835alloc_fail:
1836 ;
1837}
1838
1839int ecb_cold
1840eio_init (void (*want_poll)(void), void (*done_poll)(void))
1841{
1842 eio_want_poll_cb = want_poll;
1843 eio_done_poll_cb = done_poll;
1844
1845 return etp_init (EIO_POOL, 0, 0, 0);
1846}
1847
1848ecb_inline void
1849eio_api_destroy (eio_req *req)
1850{
1851 free (req);
1852}
1853
1854#define REQ(rtype) \
1855 eio_req *req; \
1856 \
1857 req = (eio_req *)calloc (1, sizeof *req); \
1858 if (!req) \
1859 return 0; \
1860 \
1861 req->type = rtype; \
1862 req->pri = pri; \
1863 req->finish = cb; \
1864 req->data = data; \
1865 req->destroy = eio_api_destroy;
1866
1867#define SEND eio_submit (req); return req
1868
1869#define PATH \
1870 req->flags |= EIO_FLAG_PTR1_FREE; \
1871 req->ptr1 = strdup (path); \
1872 if (!req->ptr1) \
1873 { \
1874 eio_api_destroy (req); \
1875 return 0; \
1876 }
1877
1878#define SINGLEDOT(ptr) (0[(char *)(ptr)] == '.' && !1[(char *)(ptr)])
1879
1880static void
1881eio_execute (etp_worker *self, eio_req *req)
1882{
1883#if HAVE_AT
1884 int dirfd;
1885#else
1886 const char *path;
1887#endif
1888
1889 if (ecb_expect_false (EIO_CANCELLED (req)))
1890 {
1891 req->result = -1;
1892 req->errorno = ECANCELED;
1893 return;
1894 }
1895
1896 if (ecb_expect_false (req->wd == EIO_INVALID_WD))
1897 {
1898 req->result = -1;
1899 req->errorno = ENOENT;
1900 return;
1901 }
1902
1903 if (req->type >= EIO_OPEN)
1904 {
1905 #if HAVE_AT
1906 dirfd = WD2FD (req->wd);
1907 #else
1908 path = wd_expand (&self->tmpbuf, req->wd, req->ptr1);
1909 #endif
1910 }
1911
1912 switch (req->type)
1913 {
1914 case EIO_WD_OPEN: req->wd = eio__wd_open_sync (&self->tmpbuf, req->wd, req->ptr1);
1915 req->result = req->wd == EIO_INVALID_WD ? -1 : 0;
1916 break;
1917 case EIO_WD_CLOSE: req->result = 0;
1918 eio_wd_close_sync (req->wd); break;
1919
1920 case EIO_SEEK: eio__lseek (req); break;
1921 case EIO_READ: ALLOC (req->size);
1922 req->result = req->offs >= 0
1923 ? pread (req->int1, req->ptr2, req->size, req->offs)
1924 : read (req->int1, req->ptr2, req->size); break;
1925 case EIO_WRITE: req->result = req->offs >= 0
1926 ? pwrite (req->int1, req->ptr2, req->size, req->offs)
1927 : write (req->int1, req->ptr2, req->size); break;
1928
1929 case EIO_FCNTL: req->result = fcntl (req->int1, (int) req->int2, req->ptr2); break;
1930 case EIO_IOCTL: req->result = ioctl (req->int1, (unsigned long)req->int2, req->ptr2); break;
1931
1932 case EIO_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1933 case EIO_SENDFILE: req->result = eio__sendfile (req->int1, req->int2, req->offs, req->size); break;
1934
1935#if HAVE_AT
1936
1937 case EIO_STAT: ALLOC (sizeof (EIO_STRUCT_STAT));
1938 req->result = fstatat (dirfd, req->ptr1, (EIO_STRUCT_STAT *)req->ptr2, 0); break;
1939 case EIO_LSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));
1940 req->result = fstatat (dirfd, req->ptr1, (EIO_STRUCT_STAT *)req->ptr2, AT_SYMLINK_NOFOLLOW); break;
1941 case EIO_CHOWN: req->result = fchownat (dirfd, req->ptr1, req->int2, req->int3, 0); break;
1942 case EIO_CHMOD: req->result = fchmodat (dirfd, req->ptr1, (mode_t)req->int2, 0); break;
1943 case EIO_TRUNCATE: req->result = eio__truncateat (dirfd, req->ptr1, req->offs); break;
1944 case EIO_OPEN: req->result = openat (dirfd, req->ptr1, req->int1, (mode_t)req->int2); break;
1945 case EIO_SLURP: eio__slurp ( openat (dirfd, req->ptr1, O_RDONLY | O_CLOEXEC), req); break;
1946
1947 case EIO_UNLINK: req->result = unlinkat (dirfd, req->ptr1, 0); break;
1948 case EIO_RMDIR: /* complications arise because "." cannot be removed, so we might have to expand */
1949 req->result = req->wd && SINGLEDOT (req->ptr1)
1950 ? rmdir (req->wd->str)
1951 : unlinkat (dirfd, req->ptr1, AT_REMOVEDIR); break;
1952 case EIO_MKDIR: req->result = mkdirat (dirfd, req->ptr1, (mode_t)req->int2); break;
1953 case EIO_RENAME: req->result = eio__renameat2 (
1954 dirfd,
1955 /* complications arise because "." cannot be renamed, so we might have to expand */
1956 req->wd && SINGLEDOT (req->ptr1) ? req->wd->str : req->ptr1,
1957 WD2FD ((eio_wd)req->int3),
1958 req->ptr2,
1959 req->int2
1960 );
1961 break;
1962 case EIO_LINK: req->result = linkat (dirfd, req->ptr1, WD2FD ((eio_wd)req->int3), req->ptr2, 0); break;
1963 case EIO_SYMLINK: req->result = symlinkat (req->ptr1, dirfd, req->ptr2); break;
1964 case EIO_MKNOD: req->result = mknodat (dirfd, req->ptr1, (mode_t)req->int2, (dev_t)req->offs); break;
1965 case EIO_STATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS));
1966 req->result = eio__statvfsat (dirfd, req->ptr1, (EIO_STRUCT_STATVFS *)req->ptr2); break;
1967 case EIO_READLINK: ALLOC (EIO_PATH_MAX);
1968 req->result = readlinkat (dirfd, req->ptr1, req->ptr2, EIO_PATH_MAX);
1969 if (req->result == EIO_PATH_MAX)
1970 {
1971 req->result = -1;
1972 errno = ENAMETOOLONG;
1973 }
1974 break;
1975 case EIO_UTIME:
1976 case EIO_FUTIME:
1977 {
1978 struct timespec ts[2];
1979 struct timespec *times;
1980
1981 if (req->nv1 != -1. || req->nv2 != -1.)
1982 {
1983 ts[0].tv_sec = req->nv1;
1984 ts[0].tv_nsec = (req->nv1 - ts[0].tv_sec) * 1e9;
1985 ts[1].tv_sec = req->nv2;
1986 ts[1].tv_nsec = (req->nv2 - ts[1].tv_sec) * 1e9;
1987
1988 times = ts;
1989 }
1990 else
1991 times = 0;
1992
1993 req->result = req->type == EIO_FUTIME
1994 ? futimens (req->int1, times)
1995 : utimensat (dirfd, req->ptr1, times, 0);
1996 }
1997 break;
1998
1999#else
2000
2001 case EIO_STAT: ALLOC (sizeof (EIO_STRUCT_STAT));
2002 req->result = stat (path , (EIO_STRUCT_STAT *)req->ptr2); break;
2003 case EIO_LSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));
2004 req->result = lstat (path , (EIO_STRUCT_STAT *)req->ptr2); break;
2005 case EIO_CHOWN: req->result = chown (path , req->int2, req->int3); break;
2006 case EIO_CHMOD: req->result = chmod (path , (mode_t)req->int2); break;
2007 case EIO_TRUNCATE: req->result = truncate (path , req->offs); break;
2008 case EIO_OPEN: req->result = open (path , req->int1, (mode_t)req->int2); break;
2009 case EIO_SLURP: eio__slurp ( open (path , O_RDONLY | O_CLOEXEC), req); break;
2010
2011 case EIO_UNLINK: req->result = unlink (path ); break;
2012 case EIO_RMDIR: req->result = rmdir (path ); break;
2013 case EIO_MKDIR: req->result = mkdir (path , (mode_t)req->int2); break;
2014 case EIO_RENAME: req->result = req->int2 ? EIO_ENOSYS () : rename (path, req->ptr2); break;
2015 case EIO_LINK: req->result = link (path , req->ptr2); break;
2016 case EIO_SYMLINK: req->result = symlink (path , req->ptr2); break;
2017 case EIO_MKNOD: req->result = mknod (path , (mode_t)req->int2, (dev_t)req->offs); break;
2018 case EIO_STATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS));
2019 req->result = statvfs (path , (EIO_STRUCT_STATVFS *)req->ptr2); break;
2020 case EIO_READLINK: ALLOC (EIO_PATH_MAX);
2021 req->result = readlink (path, req->ptr2, EIO_PATH_MAX);
2022 if (req->result == EIO_PATH_MAX)
2023 {
2024 req->result = -1;
2025 errno = ENAMETOOLONG;
2026 }
2027 break;
2028
2029 case EIO_UTIME:
2030 case EIO_FUTIME:
2031 {
2032 struct timeval tv[2];
2033 struct timeval *times;
2034
2035 if (req->nv1 != -1. || req->nv2 != -1.)
2036 {
2037 tv[0].tv_sec = req->nv1;
2038 tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1e6;
2039 tv[1].tv_sec = req->nv2;
2040 tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1e6;
2041
2042 times = tv;
2043 }
2044 else
2045 times = 0;
2046
2047 req->result = req->type == EIO_FUTIME
2048 ? futimes (req->int1, times)
2049 : utimes (req->ptr1, times);
2050 }
2051 break;
2052
2053#endif
2054
2055 case EIO_REALPATH: if (0 <= (req->result = eio__realpath (&self->tmpbuf, req->wd, req->ptr1)))
2056 {
2057 ALLOC (req->result);
2058 memcpy (req->ptr2, self->tmpbuf.ptr, req->result);
2059 }
2060 break;
2061
2062 case EIO_FSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));
2063 req->result = fstat (req->int1, (EIO_STRUCT_STAT *)req->ptr2); break;
2064
2065 case EIO_FSTATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS));
2066 req->result = fstatvfs (req->int1, (EIO_STRUCT_STATVFS *)req->ptr2); break;
2067
2068 case EIO_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
2069 case EIO_FCHMOD: req->result = fchmod (req->int1, (mode_t)req->int2); break;
2070 case EIO_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break;
2071
2072 case EIO_CLOSE: req->result = eio__close (req->int1); break;
2073 case EIO_DUP2: req->result = dup2 (req->int1, req->int2); break;
2074 case EIO_SYNC: req->result = 0; sync (); break;
2075 case EIO_FSYNC: req->result = fsync (req->int1); break;
2076 case EIO_FDATASYNC: req->result = fdatasync (req->int1); break;
2077 case EIO_SYNCFS: req->result = eio__syncfs (req->int1); break;
2078 case EIO_SYNC_FILE_RANGE: req->result = eio__sync_file_range (req->int1, req->offs, req->size, req->int2); break;
2079 case EIO_MSYNC: req->result = eio__msync (req->ptr2, req->size, req->int1); break;
2080 case EIO_MTOUCH: req->result = eio__mtouch (req); break;
2081 case EIO_MLOCK: req->result = eio__mlock (req->ptr2, req->size); break;
2082 case EIO_MLOCKALL: req->result = eio__mlockall (req->int1); break;
2083 case EIO_FALLOCATE: req->result = eio__fallocate (req->int1, req->int2, req->offs, req->size); break;
2084
2085 case EIO_READDIR: eio__scandir (req, self); break;
2086
2087 case EIO_BUSY:
2088#ifdef _WIN32
2089 Sleep (req->nv1 * 1e3);
2090#else
2091 {
2092 struct timeval tv;
2093
2094 tv.tv_sec = req->nv1;
2095 tv.tv_usec = (req->nv1 - tv.tv_sec) * 1e6;
2096
2097 req->result = select (0, 0, 0, 0, &tv);
2098 }
2099#endif
2100 break;
2101
2102#if 0
2103 case EIO_GROUP:
2104 abort (); /* handled in eio_request */
2105#endif
2106
2107 case EIO_NOP:
2108 req->result = 0;
2109 break;
2110
2111 case EIO_CUSTOM:
2112 req->feed (req);
2113 break;
2114
2115 default:
2116 req->result = EIO_ENOSYS ();
2117 break;
2118 }
2119
2120alloc_fail:
2121 req->errorno = errno;
2122}
2123
2124#ifndef EIO_NO_WRAPPERS
2125
2126eio_req *eio_wd_open (const char *path, int pri, eio_cb cb, void *data)
2127{
2128 REQ (EIO_WD_OPEN); PATH; SEND;
2129}
2130
2131eio_req *eio_wd_close (eio_wd wd, int pri, eio_cb cb, void *data)
2132{
2133 REQ (EIO_WD_CLOSE); req->wd = wd; SEND;
2134}
2135
2136eio_req *eio_nop (int pri, eio_cb cb, void *data)
2137{
2138 REQ (EIO_NOP); SEND;
2139}
2140
2141eio_req *eio_busy (double delay, int pri, eio_cb cb, void *data)
2142{
2143 REQ (EIO_BUSY); req->nv1 = delay; SEND;
2144}
2145
2146eio_req *eio_sync (int pri, eio_cb cb, void *data)
2147{
2148 REQ (EIO_SYNC); SEND;
2149}
2150
2151eio_req *eio_fsync (int fd, int pri, eio_cb cb, void *data)
2152{
2153 REQ (EIO_FSYNC); req->int1 = fd; SEND;
2154}
2155
2156eio_req *eio_msync (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data)
2157{
2158 REQ (EIO_MSYNC); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND;
2159}
2160
2161eio_req *eio_fdatasync (int fd, int pri, eio_cb cb, void *data)
2162{
2163 REQ (EIO_FDATASYNC); req->int1 = fd; SEND;
2164}
2165
2166eio_req *eio_syncfs (int fd, int pri, eio_cb cb, void *data)
2167{
2168 REQ (EIO_SYNCFS); req->int1 = fd; SEND;
2169}
2170
2171eio_req *eio_sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags, int pri, eio_cb cb, void *data)
2172{
2173 REQ (EIO_SYNC_FILE_RANGE); req->int1 = fd; req->offs = offset; req->size = nbytes; req->int2 = flags; SEND;
2174}
2175
2176eio_req *eio_mtouch (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data)
2177{
2178 REQ (EIO_MTOUCH); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND;
2179}
2180
2181eio_req *eio_mlock (void *addr, size_t length, int pri, eio_cb cb, void *data)
2182{
2183 REQ (EIO_MLOCK); req->ptr2 = addr; req->size = length; SEND;
2184}
2185
2186eio_req *eio_mlockall (int flags, int pri, eio_cb cb, void *data)
2187{
2188 REQ (EIO_MLOCKALL); req->int1 = flags; SEND;
2189}
2190
2191eio_req *eio_fallocate (int fd, int mode, off_t offset, size_t len, int pri, eio_cb cb, void *data)
2192{
2193 REQ (EIO_FALLOCATE); req->int1 = fd; req->int2 = mode; req->offs = offset; req->size = len; SEND;
2194}
2195
2196eio_req *eio_close (int fd, int pri, eio_cb cb, void *data)
2197{
2198 REQ (EIO_CLOSE); req->int1 = fd; SEND;
2199}
2200
2201eio_req *eio_readahead (int fd, off_t offset, size_t length, int pri, eio_cb cb, void *data)
2202{
2203 REQ (EIO_READAHEAD); req->int1 = fd; req->offs = offset; req->size = length; SEND;
2204}
2205
2206eio_req *eio_seek (int fd, off_t offset, int whence, int pri, eio_cb cb, void *data)
2207{
2208 REQ (EIO_SEEK); req->int1 = fd; req->offs = offset; req->int2 = whence; SEND;
2209}
2210
2211eio_req *eio_read (int fd, void *buf, size_t length, off_t offset, int pri, eio_cb cb, void *data)
2212{
2213 REQ (EIO_READ); req->int1 = fd; req->offs = offset; req->size = length; req->ptr2 = buf; SEND;
2214}
2215
2216eio_req *eio_write (int fd, void *buf, size_t length, off_t offset, int pri, eio_cb cb, void *data)
2217{
2218 REQ (EIO_WRITE); req->int1 = fd; req->offs = offset; req->size = length; req->ptr2 = buf; SEND;
2219}
2220
2221eio_req *eio_fcntl (int fd, int cmd, void *arg, int pri, eio_cb cb, void *data)
2222{
2223 REQ (EIO_IOCTL); req->int1 = fd; req->int2 = cmd; req->ptr2 = arg; SEND;
2224}
2225
2226eio_req *eio_ioctl (int fd, unsigned long request, void *buf, int pri, eio_cb cb, void *data)
2227{
2228 REQ (EIO_IOCTL); req->int1 = fd; req->int2 = request; req->ptr2 = buf; SEND;
2229}
2230
2231eio_req *eio_fstat (int fd, int pri, eio_cb cb, void *data)
2232{
2233 REQ (EIO_FSTAT); req->int1 = fd; SEND;
2234}
2235
2236eio_req *eio_fstatvfs (int fd, int pri, eio_cb cb, void *data)
2237{
2238 REQ (EIO_FSTATVFS); req->int1 = fd; SEND;
2239}
2240
2241eio_req *eio_futime (int fd, double atime, double mtime, int pri, eio_cb cb, void *data)
2242{
2243 REQ (EIO_FUTIME); req->int1 = fd; req->nv1 = atime; req->nv2 = mtime; SEND;
2244}
2245
2246eio_req *eio_ftruncate (int fd, off_t offset, int pri, eio_cb cb, void *data)
2247{
2248 REQ (EIO_FTRUNCATE); req->int1 = fd; req->offs = offset; SEND;
2249}
2250
2251eio_req *eio_fchmod (int fd, mode_t mode, int pri, eio_cb cb, void *data)
2252{
2253 REQ (EIO_FCHMOD); req->int1 = fd; req->int2 = (long)mode; SEND;
2254}
2255
2256eio_req *eio_fchown (int fd, eio_uid_t uid, eio_gid_t gid, int pri, eio_cb cb, void *data)
2257{
2258 REQ (EIO_FCHOWN); req->int1 = fd; req->int2 = (long)uid; req->int3 = (long)gid; SEND;
2259}
2260
2261eio_req *eio_dup2 (int fd, int fd2, int pri, eio_cb cb, void *data)
2262{
2263 REQ (EIO_DUP2); req->int1 = fd; req->int2 = fd2; SEND;
2264}
2265
2266eio_req *eio_sendfile (int out_fd, int in_fd, off_t in_offset, size_t length, int pri, eio_cb cb, void *data)
2267{
2268 REQ (EIO_SENDFILE); req->int1 = out_fd; req->int2 = in_fd; req->offs = in_offset; req->size = length; SEND;
2269}
2270
2271eio_req *eio_open (const char *path, int flags, mode_t mode, int pri, eio_cb cb, void *data)
2272{
2273 REQ (EIO_OPEN); PATH; req->int1 = flags; req->int2 = (long)mode; SEND;
2274}
2275
2276eio_req *eio_utime (const char *path, double atime, double mtime, int pri, eio_cb cb, void *data)
2277{
2278 REQ (EIO_UTIME); PATH; req->nv1 = atime; req->nv2 = mtime; SEND;
2279}
2280
2281eio_req *eio_truncate (const char *path, off_t offset, int pri, eio_cb cb, void *data)
2282{
2283 REQ (EIO_TRUNCATE); PATH; req->offs = offset; SEND;
2284}
2285
2286eio_req *eio_chown (const char *path, eio_uid_t uid, eio_gid_t gid, int pri, eio_cb cb, void *data)
2287{
2288 REQ (EIO_CHOWN); PATH; req->int2 = (long)uid; req->int3 = (long)gid; SEND;
2289}
2290
2291eio_req *eio_chmod (const char *path, mode_t mode, int pri, eio_cb cb, void *data)
2292{
2293 REQ (EIO_CHMOD); PATH; req->int2 = (long)mode; SEND;
2294}
2295
2296eio_req *eio_mkdir (const char *path, mode_t mode, int pri, eio_cb cb, void *data)
2297{
2298 REQ (EIO_MKDIR); PATH; req->int2 = (long)mode; SEND;
2299}
2300
2301static eio_req *
2302eio__1path (int type, const char *path, int pri, eio_cb cb, void *data)
2303{
2304 REQ (type); PATH; SEND;
2305}
2306
2307eio_req *eio_readlink (const char *path, int pri, eio_cb cb, void *data)
2308{
2309 return eio__1path (EIO_READLINK, path, pri, cb, data);
2310}
2311
2312eio_req *eio_realpath (const char *path, int pri, eio_cb cb, void *data)
2313{
2314 return eio__1path (EIO_REALPATH, path, pri, cb, data);
2315}
2316
2317eio_req *eio_stat (const char *path, int pri, eio_cb cb, void *data)
2318{
2319 return eio__1path (EIO_STAT, path, pri, cb, data);
2320}
2321
2322eio_req *eio_lstat (const char *path, int pri, eio_cb cb, void *data)
2323{
2324 return eio__1path (EIO_LSTAT, path, pri, cb, data);
2325}
2326
2327eio_req *eio_statvfs (const char *path, int pri, eio_cb cb, void *data)
2328{
2329 return eio__1path (EIO_STATVFS, path, pri, cb, data);
2330}
2331
2332eio_req *eio_unlink (const char *path, int pri, eio_cb cb, void *data)
2333{
2334 return eio__1path (EIO_UNLINK, path, pri, cb, data);
2335}
2336
2337eio_req *eio_rmdir (const char *path, int pri, eio_cb cb, void *data)
2338{
2339 return eio__1path (EIO_RMDIR, path, pri, cb, data);
2340}
2341
2342eio_req *eio_readdir (const char *path, int flags, int pri, eio_cb cb, void *data)
2343{
2344 REQ (EIO_READDIR); PATH; req->int1 = flags; SEND;
2345}
2346
2347eio_req *eio_mknod (const char *path, mode_t mode, dev_t dev, int pri, eio_cb cb, void *data)
2348{
2349 REQ (EIO_MKNOD); PATH; req->int2 = (long)mode; req->offs = (off_t)dev; SEND;
2350}
2351
2352static eio_req *
2353eio__2path (int type, const char *path, const char *new_path, int pri, eio_cb cb, void *data)
2354{
2355 REQ (type); PATH;
2356
2357 req->flags |= EIO_FLAG_PTR2_FREE;
2358 req->ptr2 = strdup (new_path);
2359 if (!req->ptr2)
2360 {
2361 eio_api_destroy (req);
2362 return 0;
2363 }
2364
2365 SEND;
2366}
2367
2368eio_req *eio_link (const char *path, const char *new_path, int pri, eio_cb cb, void *data)
2369{
2370 return eio__2path (EIO_LINK, path, new_path, pri, cb, data);
2371}
2372
2373eio_req *eio_symlink (const char *path, const char *new_path, int pri, eio_cb cb, void *data)
2374{
2375 return eio__2path (EIO_SYMLINK, path, new_path, pri, cb, data);
2376}
2377
2378eio_req *eio_rename (const char *path, const char *new_path, int pri, eio_cb cb, void *data)
2379{
2380 return eio__2path (EIO_RENAME, path, new_path, pri, cb, data);
2381}
2382
2383eio_req *eio_slurp (const char *path, void *buf, size_t length, off_t offset, int pri, eio_cb cb, void *data)
2384{
2385 REQ (EIO_SLURP); PATH; req->offs = offset; req->size = length; req->ptr2 = buf; SEND;
2386}
2387
2388eio_req *eio_custom (void (*execute)(eio_req *), int pri, eio_cb cb, void *data)
2389{
2390 REQ (EIO_CUSTOM); req->feed = execute; SEND;
2391}
2392
2393#endif
2394
2395eio_req *eio_grp (eio_cb cb, void *data)
2396{
2397 const int pri = EIO_PRI_MAX;
2398
2399 REQ (EIO_GROUP); SEND;
2400}
2401
2402#undef REQ
2403#undef PATH
2404#undef SEND
2405
2406/*****************************************************************************/
2407/* grp functions */
1171 2408
1172void 2409void
1173aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)
1174 PROTOTYPE: $$$$;$
1175 PPCODE:
1176{
1177 dREQ;
1178
1179 req->type = EIO_SENDFILE;
1180 req->sv1 = newSVsv (out_fh);
1181 req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1182 req->sv2 = newSVsv (in_fh);
1183 req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1184 req->offs = SvVAL64 (in_offset);
1185 req->size = length;
1186
1187 EIO_SEND;
1188}
1189
1190void
1191aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)
1192 PROTOTYPE: $$$;$
1193 PPCODE:
1194{
1195 dREQ;
1196
1197 req->type = EIO_READAHEAD;
1198 req->sv1 = newSVsv (fh);
1199 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1200 req->offs = SvVAL64 (offset);
1201 req->size = length;
1202
1203 EIO_SEND;
1204}
1205
1206void
1207aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1208 ALIAS:
1209 aio_stat = EIO_STAT
1210 aio_lstat = EIO_LSTAT
1211 PPCODE:
1212{
1213 dREQ;
1214
1215 req->ptr2 = malloc (sizeof (EIO_STRUCT_STAT));
1216 if (!req->ptr2)
1217 {
1218 req_destroy (req);
1219 croak ("out of memory during aio_stat statdata allocation");
1220 }
1221
1222 req->flags |= FLAG_PTR2_FREE;
1223 req->sv1 = newSVsv (fh_or_path);
1224
1225 if (SvPOK (fh_or_path))
1226 {
1227 req->type = ix;
1228 req->ptr1 = SvPVbyte_nolen (req->sv1);
1229 }
1230 else
1231 {
1232 req->type = EIO_FSTAT;
1233 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1234 }
1235
1236 EIO_SEND;
1237}
1238
1239void
1240aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
1241 PPCODE:
1242{
1243 dREQ;
1244
1245 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1246 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1247 req->sv1 = newSVsv (fh_or_path);
1248
1249 if (SvPOK (fh_or_path))
1250 {
1251 req->type = EIO_UTIME;
1252 req->ptr1 = SvPVbyte_nolen (req->sv1);
1253 }
1254 else
1255 {
1256 req->type = EIO_FUTIME;
1257 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1258 }
1259
1260 EIO_SEND;
1261}
1262
1263void
1264aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
1265 PPCODE:
1266{
1267 dREQ;
1268
1269 req->sv1 = newSVsv (fh_or_path);
1270 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1271
1272 if (SvPOK (fh_or_path))
1273 {
1274 req->type = EIO_TRUNCATE;
1275 req->ptr1 = SvPVbyte_nolen (req->sv1);
1276 }
1277 else
1278 {
1279 req->type = EIO_FTRUNCATE;
1280 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1281 }
1282
1283 EIO_SEND;
1284}
1285
1286void
1287aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
1288 ALIAS:
1289 aio_chmod = EIO_CHMOD
1290 aio_fchmod = EIO_FCHMOD
1291 aio_mkdir = EIO_MKDIR
1292 PPCODE:
1293{
1294 dREQ;
1295
1296 req->type = type;
1297 req->int2 = mode;
1298 req->sv1 = newSVsv (fh_or_path);
1299
1300 if (ix == EIO_FCHMOD)
1301 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1302 else
1303 req->ptr1 = SvPVbyte_nolen (req->sv1);
1304
1305 EIO_SEND;
1306}
1307
1308void
1309aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
1310 PPCODE:
1311{
1312 dREQ;
1313
1314 req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1315 req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1316 req->sv1 = newSVsv (fh_or_path);
1317
1318 if (SvPOK (fh_or_path))
1319 {
1320 req->type = EIO_CHOWN;
1321 req->ptr1 = SvPVbyte_nolen (req->sv1);
1322 }
1323 else
1324 {
1325 req->type = EIO_FCHOWN;
1326 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1327 }
1328
1329 EIO_SEND;
1330}
1331
1332void
1333aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1334 ALIAS:
1335 aio_unlink = EIO_UNLINK
1336 aio_rmdir = EIO_RMDIR
1337 aio_readdir = EIO_READDIR
1338 PPCODE:
1339{
1340 dREQ;
1341
1342 req->type = ix;
1343 req->sv1 = newSVsv (pathname);
1344 req->ptr1 = SvPVbyte_nolen (req->sv1);
1345
1346 EIO_SEND;
1347}
1348
1349void
1350aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1351 ALIAS:
1352 aio_link = EIO_LINK
1353 aio_symlink = EIO_SYMLINK
1354 aio_rename = EIO_RENAME
1355 PPCODE:
1356{
1357 dREQ;
1358
1359 req->type = ix;
1360 req->sv1 = newSVsv (oldpath);
1361 req->ptr1 = SvPVbyte_nolen (req->sv1);
1362 req->sv2 = newSVsv (newpath);
1363 req->ptr2 = SvPVbyte_nolen (req->sv2);
1364
1365 EIO_SEND;
1366}
1367
1368void
1369aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1370 PPCODE:
1371{
1372 dREQ;
1373
1374 req->type = EIO_MKNOD;
1375 req->sv1 = newSVsv (pathname);
1376 req->ptr1 = SvPVbyte_nolen (req->sv1);
1377 req->int2 = (mode_t)mode;
1378 req->offs = dev;
1379
1380 EIO_SEND;
1381}
1382
1383void
1384aio_busy (double delay, SV *callback=&PL_sv_undef)
1385 PPCODE:
1386{
1387 dREQ;
1388
1389 req->type = EIO_BUSY;
1390 req->nv1 = delay < 0. ? 0. : delay;
1391
1392 EIO_SEND;
1393}
1394
1395void
1396aio_group (SV *callback=&PL_sv_undef)
1397 PROTOTYPE: ;$
1398 PPCODE:
1399{
1400 dREQ;
1401
1402 req->type = EIO_GROUP;
1403
1404 req_send (req);
1405 XPUSHs (req_sv (req, AIO_GRP_KLASS));
1406}
1407
1408void
1409aio_nop (SV *callback=&PL_sv_undef)
1410 ALIAS:
1411 aio_nop = EIO_NOP
1412 aio_sync = EIO_SYNC
1413 PPCODE:
1414{
1415 dREQ;
1416
1417#endif
1418
1419void eio_grp_feed (eio_req *grp, void (*feed)(eio_req *req), int limit) 2410eio_grp_feed (eio_req *grp, void (*feed)(eio_req *req), int limit)
1420{ 2411{
1421 grp->int2 = limit; 2412 grp->int2 = limit;
1422 grp->feed = feed; 2413 grp->feed = feed;
1423 2414
1424 grp_try_feed (grp); 2415 grp_try_feed (grp);
1425} 2416}
1426 2417
2418void
1427void eio_grp_limit (eio_req *grp, int limit) 2419eio_grp_limit (eio_req *grp, int limit)
1428{ 2420{
1429 grp->int2 = limit; 2421 grp->int2 = limit;
1430 2422
1431 grp_try_feed (grp); 2423 grp_try_feed (grp);
1432} 2424}
1433 2425
2426void
1434void eio_grp_add (eio_req *grp, eio_req *req) 2427eio_grp_add (eio_req *grp, eio_req *req)
1435{ 2428{
1436 assert (("cannot add requests to IO::AIO::GRP after the group finished", grp->int1 != 2)); 2429 assert (("cannot add requests to IO::AIO::GRP after the group finished", grp->int1 != 2));
2430
2431 grp->flags |= ETP_FLAG_GROUPADD;
1437 2432
1438 ++grp->size; 2433 ++grp->size;
1439 req->grp = grp; 2434 req->grp = grp;
1440 2435
1441 req->grp_prev = 0; 2436 req->grp_prev = 0;
… …
1445 grp->grp_first->grp_prev = req; 2440 grp->grp_first->grp_prev = req;
1446 2441
1447 grp->grp_first = req; 2442 grp->grp_first = req;
1448} 2443}
1449 2444
2445/*****************************************************************************/
2446/* misc garbage */
1450 2447
2448eio_ssize_t
2449eio_sendfile_sync (int ofd, int ifd, off_t offset, size_t count)
2450{
2451 return eio__sendfile (ofd, ifd, offset, count);
2452}
2453
2454int eio_mlockall_sync (int flags)
2455{
2456 return eio__mlockall (flags);
2457}
2458

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