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168 | use common::sense; |
168 | use common::sense; |
169 | |
169 | |
170 | use base 'Exporter'; |
170 | use base 'Exporter'; |
171 | |
171 | |
172 | BEGIN { |
172 | BEGIN { |
173 | our $VERSION = '4.11'; |
173 | our $VERSION = '4.15'; |
174 | |
174 | |
175 | our @AIO_REQ = qw(aio_sendfile aio_read aio_write aio_open aio_close |
175 | our @AIO_REQ = qw(aio_sendfile aio_seek aio_read aio_write aio_open aio_close |
176 | aio_stat aio_lstat aio_unlink aio_rmdir aio_readdir aio_readdirx |
176 | aio_stat aio_lstat aio_unlink aio_rmdir aio_readdir aio_readdirx |
177 | aio_scandir aio_symlink aio_readlink aio_realpath aio_sync |
177 | aio_scandir aio_symlink aio_readlink aio_realpath aio_sync |
178 | aio_fsync aio_syncfs aio_fdatasync aio_sync_file_range aio_fallocate |
178 | aio_fsync aio_syncfs aio_fdatasync aio_sync_file_range aio_fallocate |
179 | aio_pathsync aio_readahead |
179 | aio_pathsync aio_readahead aio_fiemap |
180 | aio_rename aio_link aio_move aio_copy aio_group |
180 | aio_rename aio_link aio_move aio_copy aio_group |
181 | aio_nop aio_mknod aio_load aio_rmtree aio_mkdir aio_chown |
181 | aio_nop aio_mknod aio_load aio_rmtree aio_mkdir aio_chown |
182 | aio_chmod aio_utime aio_truncate |
182 | aio_chmod aio_utime aio_truncate |
183 | aio_msync aio_mtouch aio_mlock aio_mlockall |
183 | aio_msync aio_mtouch aio_mlock aio_mlockall |
184 | aio_statvfs |
184 | aio_statvfs |
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209 | documentation. |
209 | documentation. |
210 | |
210 | |
211 | aio_wd $pathname, $callback->($wd) |
211 | aio_wd $pathname, $callback->($wd) |
212 | aio_open $pathname, $flags, $mode, $callback->($fh) |
212 | aio_open $pathname, $flags, $mode, $callback->($fh) |
213 | aio_close $fh, $callback->($status) |
213 | aio_close $fh, $callback->($status) |
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214 | aio_seek $fh,$offset,$whence, $callback->($offs) |
214 | aio_read $fh,$offset,$length, $data,$dataoffset, $callback->($retval) |
215 | aio_read $fh,$offset,$length, $data,$dataoffset, $callback->($retval) |
215 | aio_write $fh,$offset,$length, $data,$dataoffset, $callback->($retval) |
216 | aio_write $fh,$offset,$length, $data,$dataoffset, $callback->($retval) |
216 | aio_sendfile $out_fh, $in_fh, $in_offset, $length, $callback->($retval) |
217 | aio_sendfile $out_fh, $in_fh, $in_offset, $length, $callback->($retval) |
217 | aio_readahead $fh,$offset,$length, $callback->($retval) |
218 | aio_readahead $fh,$offset,$length, $callback->($retval) |
218 | aio_stat $fh_or_path, $callback->($status) |
219 | aio_stat $fh_or_path, $callback->($status) |
219 | aio_lstat $fh, $callback->($status) |
220 | aio_lstat $fh, $callback->($status) |
220 | aio_statvfs $fh_or_path, $callback->($statvfs) |
221 | aio_statvfs $fh_or_path, $callback->($statvfs) |
221 | aio_utime $fh_or_path, $atime, $mtime, $callback->($status) |
222 | aio_utime $fh_or_path, $atime, $mtime, $callback->($status) |
222 | aio_chown $fh_or_path, $uid, $gid, $callback->($status) |
223 | aio_chown $fh_or_path, $uid, $gid, $callback->($status) |
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224 | aio_chmod $fh_or_path, $mode, $callback->($status) |
223 | aio_truncate $fh_or_path, $offset, $callback->($status) |
225 | aio_truncate $fh_or_path, $offset, $callback->($status) |
224 | aio_chmod $fh_or_path, $mode, $callback->($status) |
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225 | aio_unlink $pathname, $callback->($status) |
226 | aio_unlink $pathname, $callback->($status) |
226 | aio_mknod $pathname, $mode, $dev, $callback->($status) |
227 | aio_mknod $pathname, $mode, $dev, $callback->($status) |
227 | aio_link $srcpath, $dstpath, $callback->($status) |
228 | aio_link $srcpath, $dstpath, $callback->($status) |
228 | aio_symlink $srcpath, $dstpath, $callback->($status) |
229 | aio_symlink $srcpath, $dstpath, $callback->($status) |
229 | aio_readlink $pathname, $callback->($link) |
230 | aio_readlink $pathname, $callback->($link) |
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271 | IO::AIO::nready |
272 | IO::AIO::nready |
272 | IO::AIO::npending |
273 | IO::AIO::npending |
273 | |
274 | |
274 | IO::AIO::sendfile $ofh, $ifh, $offset, $count |
275 | IO::AIO::sendfile $ofh, $ifh, $offset, $count |
275 | IO::AIO::fadvise $fh, $offset, $len, $advice |
276 | IO::AIO::fadvise $fh, $offset, $len, $advice |
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277 | IO::AIO::mmap $scalar, $length, $prot, $flags[, $fh[, $offset]] |
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278 | IO::AIO::munmap $scalar |
276 | IO::AIO::madvise $scalar, $offset, $length, $advice |
279 | IO::AIO::madvise $scalar, $offset, $length, $advice |
277 | IO::AIO::mprotect $scalar, $offset, $length, $protect |
280 | IO::AIO::mprotect $scalar, $offset, $length, $protect |
278 | IO::AIO::munlock $scalar, $offset = 0, $length = undef |
281 | IO::AIO::munlock $scalar, $offset = 0, $length = undef |
279 | IO::AIO::munlockall |
282 | IO::AIO::munlockall |
280 | |
283 | |
281 | =head2 AIO REQUEST FUNCTIONS |
284 | =head2 API NOTES |
282 | |
285 | |
283 | All the C<aio_*> calls are more or less thin wrappers around the syscall |
286 | All the C<aio_*> calls are more or less thin wrappers around the syscall |
284 | with the same name (sans C<aio_>). The arguments are similar or identical, |
287 | with the same name (sans C<aio_>). The arguments are similar or identical, |
285 | and they all accept an additional (and optional) C<$callback> argument |
288 | and they all accept an additional (and optional) C<$callback> argument |
286 | which must be a code reference. This code reference will be called after |
289 | which must be a code reference. This code reference will be called after |
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317 | correct contents. |
320 | correct contents. |
318 | |
321 | |
319 | This works, btw. independent of the internal UTF-8 bit, which IO::AIO |
322 | This works, btw. independent of the internal UTF-8 bit, which IO::AIO |
320 | handles correctly whether it is set or not. |
323 | handles correctly whether it is set or not. |
321 | |
324 | |
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|
325 | =head2 AIO REQUEST FUNCTIONS |
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|
326 | |
322 | =over 4 |
327 | =over 4 |
323 | |
328 | |
324 | =item $prev_pri = aioreq_pri [$pri] |
329 | =item $prev_pri = aioreq_pri [$pri] |
325 | |
330 | |
326 | Returns the priority value that would be used for the next request and, if |
331 | Returns the priority value that would be used for the next request and, if |
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… | |
407 | |
412 | |
408 | Or in other words: the file descriptor will be closed, but it will not be |
413 | Or in other words: the file descriptor will be closed, but it will not be |
409 | free for reuse until the perl filehandle is closed. |
414 | free for reuse until the perl filehandle is closed. |
410 | |
415 | |
411 | =cut |
416 | =cut |
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|
417 | |
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|
418 | =item aio_seek $fh, $offset, $whence, $callback->($offs) |
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419 | |
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|
420 | Seeks the filehandle to the new C<$offset>, similarly to perl's |
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|
421 | C<sysseek>. The C<$whence> can use the traditional values (C<0> for |
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422 | C<IO::AIO::SEEK_SET>, C<1> for C<IO::AIO::SEEK_CUR> or C<2> for |
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423 | C<IO::AIO::SEEK_END>). |
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424 | |
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425 | The resulting absolute offset will be passed to the callback, or C<-1> in |
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426 | case of an error. |
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427 | |
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428 | In theory, the C<$whence> constants could be different than the |
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429 | corresponding values from L<Fcntl>, but perl guarantees they are the same, |
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430 | so don't panic. |
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431 | |
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432 | As a GNU/Linux (and maybe Solaris) extension, also the constants |
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433 | C<IO::AIO::SEEK_DATA> and C<IO::AIO::SEEK_HOLE> are available, if they |
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434 | could be found. No guarantees about suitability for use in C<aio_seek> or |
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435 | Perl's C<sysseek> can be made though, although I would naively assume they |
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436 | "just work". |
412 | |
437 | |
413 | =item aio_read $fh,$offset,$length, $data,$dataoffset, $callback->($retval) |
438 | =item aio_read $fh,$offset,$length, $data,$dataoffset, $callback->($retval) |
414 | |
439 | |
415 | =item aio_write $fh,$offset,$length, $data,$dataoffset, $callback->($retval) |
440 | =item aio_write $fh,$offset,$length, $data,$dataoffset, $callback->($retval) |
416 | |
441 | |
… | |
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1232 | |
1257 | |
1233 | Example: asynchronously lock all current and future pages into memory. |
1258 | Example: asynchronously lock all current and future pages into memory. |
1234 | |
1259 | |
1235 | aio_mlockall IO::AIO::MCL_FUTURE; |
1260 | aio_mlockall IO::AIO::MCL_FUTURE; |
1236 | |
1261 | |
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|
1262 | =item aio_fiemap $fh, $start, $length, $flags, $count, $cb->(\@extents) |
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1263 | |
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|
1264 | Queries the extents of the given file (by calling the Linux FIEMAP ioctl, |
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|
1265 | see L<http://cvs.schmorp.de/IO-AIO/doc/fiemap.txt> for details). If the |
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1266 | C<ioctl> is not available on your OS, then this rquiest will fail with |
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1267 | C<ENOSYS>. |
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1268 | |
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1269 | C<$start> is the starting offset to query extents for, C<$length> is the |
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1270 | size of the range to query - if it is C<undef>, then the whole file will |
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1271 | be queried. |
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1272 | |
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1273 | C<$flags> is a combination of flags (C<IO::AIO::FIEMAP_FLAG_SYNC> or |
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1274 | C<IO::AIO::FIEMAP_FLAG_XATTR> - C<IO::AIO::FIEMAP_FLAGS_COMPAT> is also |
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1275 | exported), and is normally C<0> or C<IO::AIO::FIEMAP_FLAG_SYNC> to query |
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1276 | the data portion. |
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1277 | |
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1278 | C<$count> is the maximum number of extent records to return. If it is |
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1279 | C<undef>, then IO::AIO queries all extents of the file. As a very special |
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1280 | case, if it is C<0>, then the callback receives the number of extents |
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1281 | instead of the extents themselves. |
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1282 | |
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1283 | If an error occurs, the callback receives no arguments. The special |
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1284 | C<errno> value C<IO::AIO::EBADR> is available to test for flag errors. |
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1285 | |
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1286 | Otherwise, the callback receives an array reference with extent |
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1287 | structures. Each extent structure is an array reference itself, with the |
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1288 | following members: |
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1289 | |
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1290 | [$logical, $physical, $length, $flags] |
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1291 | |
|
|
1292 | Flags is any combination of the following flag values (typically either C<0> |
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|
1293 | or C<IO::AIO::FIEMAP_EXTENT_LAST>): |
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|
1294 | |
|
|
1295 | C<IO::AIO::FIEMAP_EXTENT_LAST>, C<IO::AIO::FIEMAP_EXTENT_UNKNOWN>, |
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1296 | C<IO::AIO::FIEMAP_EXTENT_DELALLOC>, C<IO::AIO::FIEMAP_EXTENT_ENCODED>, |
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1297 | C<IO::AIO::FIEMAP_EXTENT_DATA_ENCRYPTED>, C<IO::AIO::FIEMAP_EXTENT_NOT_ALIGNED>, |
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1298 | C<IO::AIO::FIEMAP_EXTENT_DATA_INLINE>, C<IO::AIO::FIEMAP_EXTENT_DATA_TAIL>, |
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1299 | C<IO::AIO::FIEMAP_EXTENT_UNWRITTEN>, C<IO::AIO::FIEMAP_EXTENT_MERGED> or |
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1300 | C<IO::AIO::FIEMAP_EXTENT_SHARED>. |
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1301 | |
1237 | =item aio_group $callback->(...) |
1302 | =item aio_group $callback->(...) |
1238 | |
1303 | |
1239 | This is a very special aio request: Instead of doing something, it is a |
1304 | This is a very special aio request: Instead of doing something, it is a |
1240 | container for other aio requests, which is useful if you want to bundle |
1305 | container for other aio requests, which is useful if you want to bundle |
1241 | many requests into a single, composite, request with a definite callback |
1306 | many requests into a single, composite, request with a definite callback |
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1906 | Calls the C<munlockall> function. |
1971 | Calls the C<munlockall> function. |
1907 | |
1972 | |
1908 | On systems that do not implement C<munlockall>, this function returns |
1973 | On systems that do not implement C<munlockall>, this function returns |
1909 | ENOSYS, otherwise the return value of C<munlockall>. |
1974 | ENOSYS, otherwise the return value of C<munlockall>. |
1910 | |
1975 | |
|
|
1976 | =item IO::AIO::splice $r_fh, $r_off, $w_fh, $w_off, $length, $flags |
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1977 | |
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1978 | Calls the GNU/Linux C<splice(2)> syscall, if available. If C<$r_off> or |
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1979 | C<$w_off> are C<undef>, then C<NULL> is passed for these, otherwise they |
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1980 | should be the file offset. |
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1981 | |
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1982 | The following symbol flag values are available: C<IO::AIO::SPLICE_F_MOVE>, |
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1983 | C<IO::AIO::SPLICE_F_NONBLOCK>, C<IO::AIO::SPLICE_F_MORE> and |
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1984 | C<IO::AIO::SPLICE_F_GIFT>. |
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1985 | |
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1986 | See the C<splice(2)> manpage for details. |
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1987 | |
|
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1988 | =item IO::AIO::tee $r_fh, $w_fh, $length, $flags |
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1989 | |
|
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1990 | Calls the GNU/Linux C<tee(2)> syscall, see it's manpage and the |
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1991 | description for C<IO::AIO::splice> above for details. |
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1992 | |
1911 | =back |
1993 | =back |
1912 | |
1994 | |
1913 | =cut |
1995 | =cut |
1914 | |
1996 | |
1915 | min_parallel 8; |
1997 | min_parallel 8; |