… | |
… | |
14 | aio_unlink "/tmp/file", sub { }; |
14 | aio_unlink "/tmp/file", sub { }; |
15 | |
15 | |
16 | aio_read $fh, 30000, 1024, $buffer, 0, sub { |
16 | aio_read $fh, 30000, 1024, $buffer, 0, sub { |
17 | $_[0] > 0 or die "read error: $!"; |
17 | $_[0] > 0 or die "read error: $!"; |
18 | }; |
18 | }; |
|
|
19 | |
|
|
20 | # AnyEvent |
|
|
21 | open my $fh, "<&=" . IO::AIO::poll_fileno or die "$!"; |
|
|
22 | my $w = AnyEvent->io (fh => $fh, poll => 'r', cb => sub { IO::AIO::poll_cb }); |
19 | |
23 | |
20 | # Event |
24 | # Event |
21 | Event->io (fd => IO::AIO::poll_fileno, |
25 | Event->io (fd => IO::AIO::poll_fileno, |
22 | poll => 'r', |
26 | poll => 'r', |
23 | cb => \&IO::AIO::poll_cb); |
27 | cb => \&IO::AIO::poll_cb); |
… | |
… | |
57 | =cut |
61 | =cut |
58 | |
62 | |
59 | package IO::AIO; |
63 | package IO::AIO; |
60 | |
64 | |
61 | no warnings; |
65 | no warnings; |
|
|
66 | use strict 'vars'; |
62 | |
67 | |
63 | use base 'Exporter'; |
68 | use base 'Exporter'; |
64 | |
69 | |
65 | use Fcntl (); |
|
|
66 | |
|
|
67 | BEGIN { |
70 | BEGIN { |
68 | $VERSION = 1.6; |
71 | our $VERSION = '1.8'; |
69 | |
72 | |
70 | @EXPORT = qw(aio_sendfile aio_read aio_write aio_open aio_close aio_stat |
73 | our @EXPORT = qw(aio_sendfile aio_read aio_write aio_open aio_close aio_stat |
71 | aio_lstat aio_unlink aio_rmdir aio_readdir aio_scandir aio_symlink |
74 | aio_lstat aio_unlink aio_rmdir aio_readdir aio_scandir aio_symlink |
72 | aio_fsync aio_fdatasync aio_readahead); |
75 | aio_fsync aio_fdatasync aio_readahead aio_rename aio_link aio_move); |
73 | @EXPORT_OK = qw(poll_fileno poll_cb min_parallel max_parallel |
76 | our @EXPORT_OK = qw(poll_fileno poll_cb min_parallel max_parallel max_outstanding nreqs); |
74 | max_outstanding nreqs); |
|
|
75 | |
77 | |
76 | require XSLoader; |
78 | require XSLoader; |
77 | XSLoader::load IO::AIO, $VERSION; |
79 | XSLoader::load ("IO::AIO", $VERSION); |
78 | } |
80 | } |
79 | |
81 | |
80 | =head1 FUNCTIONS |
82 | =head1 FUNCTIONS |
81 | |
83 | |
82 | =head2 AIO FUNCTIONS |
84 | =head2 AIO FUNCTIONS |
… | |
… | |
164 | aio_read $fh, 7, 15, $buffer, 0, sub { |
166 | aio_read $fh, 7, 15, $buffer, 0, sub { |
165 | $_[0] > 0 or die "read error: $!"; |
167 | $_[0] > 0 or die "read error: $!"; |
166 | print "read $_[0] bytes: <$buffer>\n"; |
168 | print "read $_[0] bytes: <$buffer>\n"; |
167 | }; |
169 | }; |
168 | |
170 | |
|
|
171 | =item aio_move $srcpath, $dstpath, $callback->($status) |
|
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172 | |
|
|
173 | [EXPERIMENTAL] |
|
|
174 | |
|
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175 | Try to move the I<file> (directories not supported as either source or destination) |
|
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176 | from C<$srcpath> to C<$dstpath> and call the callback with the C<0> (error) or C<-1> ok. |
|
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177 | |
|
|
178 | This is a composite request that tries to rename(2) the file first. If |
|
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179 | rename files with C<EXDEV>, it creates the destination file with mode 0200 |
|
|
180 | and copies the contents of the source file into it using C<aio_sendfile>, |
|
|
181 | followed by restoring atime, mtime, access mode and uid/gid, in that |
|
|
182 | order, and unlinking the C<$srcpath>. |
|
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183 | |
|
|
184 | If an error occurs, the partial destination file will be unlinked, if |
|
|
185 | possible, except when setting atime, mtime, access mode and uid/gid, where |
|
|
186 | errors are being ignored. |
|
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187 | |
|
|
188 | =cut |
|
|
189 | |
|
|
190 | sub aio_move($$$) { |
|
|
191 | my ($src, $dst, $cb) = @_; |
|
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192 | |
|
|
193 | aio_rename $src, $dst, sub { |
|
|
194 | if ($_[0] && $! == EXDEV) { |
|
|
195 | aio_open $src, O_RDONLY, 0, sub { |
|
|
196 | if (my $src_fh = $_[0]) { |
|
|
197 | my @stat = stat $src_fh; |
|
|
198 | |
|
|
199 | aio_open $dst, O_WRONLY, 0200, sub { |
|
|
200 | if (my $dst_fh = $_[0]) { |
|
|
201 | aio_sendfile $dst_fh, $src_fh, 0, $stat[7], sub { |
|
|
202 | close $src_fh; |
|
|
203 | |
|
|
204 | if ($_[0] == $stat[7]) { |
|
|
205 | utime $stat[8], $stat[9], $dst; |
|
|
206 | chmod $stat[2] & 07777, $dst_fh; |
|
|
207 | chown $stat[4], $stat[5], $dst_fh; |
|
|
208 | close $dst_fh; |
|
|
209 | |
|
|
210 | aio_unlink $src, sub { |
|
|
211 | $cb->($_[0]); |
|
|
212 | }; |
|
|
213 | } else { |
|
|
214 | my $errno = $!; |
|
|
215 | aio_unlink $dst, sub { |
|
|
216 | $! = $errno; |
|
|
217 | $cb->(-1); |
|
|
218 | }; |
|
|
219 | } |
|
|
220 | }; |
|
|
221 | } else { |
|
|
222 | $cb->(-1); |
|
|
223 | } |
|
|
224 | }, |
|
|
225 | |
|
|
226 | } else { |
|
|
227 | $cb->(-1); |
|
|
228 | } |
|
|
229 | }; |
|
|
230 | } else { |
|
|
231 | $cb->($_[0]); |
|
|
232 | } |
|
|
233 | }; |
|
|
234 | } |
|
|
235 | |
169 | =item aio_sendfile $out_fh, $in_fh, $in_offset, $length, $callback->($retval) |
236 | =item aio_sendfile $out_fh, $in_fh, $in_offset, $length, $callback->($retval) |
170 | |
237 | |
171 | Tries to copy C<$length> bytes from C<$in_fh> to C<$out_fh>. It starts |
238 | Tries to copy C<$length> bytes from C<$in_fh> to C<$out_fh>. It starts |
172 | reading at byte offset C<$in_offset>, and starts writing at the current |
239 | reading at byte offset C<$in_offset>, and starts writing at the current |
173 | file offset of C<$out_fh>. Because of that, it is not safe to issue more |
240 | file offset of C<$out_fh>. Because of that, it is not safe to issue more |
… | |
… | |
228 | =item aio_unlink $pathname, $callback->($status) |
295 | =item aio_unlink $pathname, $callback->($status) |
229 | |
296 | |
230 | Asynchronously unlink (delete) a file and call the callback with the |
297 | Asynchronously unlink (delete) a file and call the callback with the |
231 | result code. |
298 | result code. |
232 | |
299 | |
|
|
300 | =item aio_link $srcpath, $dstpath, $callback->($status) |
|
|
301 | |
|
|
302 | Asynchronously create a new link to the existing object at C<$srcpath> at |
|
|
303 | the path C<$dstpath> and call the callback with the result code. |
|
|
304 | |
|
|
305 | =item aio_symlink $srcpath, $dstpath, $callback->($status) |
|
|
306 | |
|
|
307 | Asynchronously create a new symbolic link to the existing object at C<$srcpath> at |
|
|
308 | the path C<$dstpath> and call the callback with the result code. |
|
|
309 | |
|
|
310 | =item aio_rename $srcpath, $dstpath, $callback->($status) |
|
|
311 | |
|
|
312 | Asynchronously rename the object at C<$srcpath> to C<$dstpath>, just as |
|
|
313 | rename(2) and call the callback with the result code. |
|
|
314 | |
233 | =item aio_rmdir $pathname, $callback->($status) |
315 | =item aio_rmdir $pathname, $callback->($status) |
234 | |
316 | |
235 | Asynchronously rmdir (delete) a directory and call the callback with the |
317 | Asynchronously rmdir (delete) a directory and call the callback with the |
236 | result code. |
318 | result code. |
237 | |
319 | |
238 | =item aio_readdir $pathname $callback->($entries) |
320 | =item aio_readdir $pathname, $callback->($entries) |
239 | |
321 | |
240 | Unlike the POSIX call of the same name, C<aio_readdir> reads an entire |
322 | Unlike the POSIX call of the same name, C<aio_readdir> reads an entire |
241 | directory (i.e. opendir + readdir + closedir). The entries will not be |
323 | directory (i.e. opendir + readdir + closedir). The entries will not be |
242 | sorted, and will B<NOT> include the C<.> and C<..> entries. |
324 | sorted, and will B<NOT> include the C<.> and C<..> entries. |
243 | |
325 | |
… | |
… | |
278 | |
360 | |
279 | Then entires will be sorted into likely directories (everything without a |
361 | Then entires will be sorted into likely directories (everything without a |
280 | non-initial dot) and likely non-directories (everything else). Then every |
362 | non-initial dot) and likely non-directories (everything else). Then every |
281 | entry + C</.> will be C<stat>'ed, likely directories first. This is often |
363 | entry + C</.> will be C<stat>'ed, likely directories first. This is often |
282 | faster because filesystems might detect the type of the entry without |
364 | faster because filesystems might detect the type of the entry without |
283 | reading the inode data (e.g. ext2s filetype feature). If that succeeds, |
365 | reading the inode data (e.g. ext2fs filetype feature). If that succeeds, |
284 | it assumes that the entry is a directory or a symlink to directory (which |
366 | it assumes that the entry is a directory or a symlink to directory (which |
285 | will be checked seperately). |
367 | will be checked seperately). |
286 | |
368 | |
287 | If the known number of directories has been reached, the rest of the |
369 | If the known number of directories has been reached, the rest of the |
288 | entries is assumed to be non-directories. |
370 | entries is assumed to be non-directories. |
… | |
… | |
294 | |
376 | |
295 | $maxreq = 8 if $maxreq <= 0; |
377 | $maxreq = 8 if $maxreq <= 0; |
296 | |
378 | |
297 | # stat once |
379 | # stat once |
298 | aio_stat $path, sub { |
380 | aio_stat $path, sub { |
299 | $cb->() if $_[0]; |
381 | return $cb->() if $_[0]; |
300 | my $hash1 = join ":", (stat _)[0,1,3,7,9]; |
382 | my $hash1 = join ":", (stat _)[0,1,3,7,9]; |
301 | |
383 | |
302 | # read the directory entries |
384 | # read the directory entries |
303 | aio_readdir $path, sub { |
385 | aio_readdir $path, sub { |
304 | my $entries = shift |
386 | my $entries = shift |
… | |
… | |
315 | $ndirs = -1; |
397 | $ndirs = -1; |
316 | } else { |
398 | } else { |
317 | # if nlink == 2, we are finished |
399 | # if nlink == 2, we are finished |
318 | # on non-posix-fs's, we rely on nlink < 2 |
400 | # on non-posix-fs's, we rely on nlink < 2 |
319 | $ndirs = (stat _)[3] - 2 |
401 | $ndirs = (stat _)[3] - 2 |
320 | or $cb->([], $entries); |
402 | or return $cb->([], $entries); |
321 | } |
403 | } |
322 | |
404 | |
323 | # sort into likely dirs and likely nondirs |
405 | # sort into likely dirs and likely nondirs |
324 | # dirs == files without ".", short entries first |
406 | # dirs == files without ".", short entries first |
325 | $entries = [map $_->[0], |
407 | $entries = [map $_->[0], |
… | |
… | |
341 | } |
423 | } |
342 | } elsif (!$nreq) { |
424 | } elsif (!$nreq) { |
343 | # finished |
425 | # finished |
344 | undef $statcb; |
426 | undef $statcb; |
345 | undef $schedcb; |
427 | undef $schedcb; |
346 | $cb->(\@dirs, \@nondirs); |
428 | $cb->(\@dirs, \@nondirs) if $cb; |
347 | undef $cb; |
429 | undef $cb; |
348 | } |
430 | } |
349 | }; |
431 | }; |
350 | $statcb = sub { |
432 | $statcb = sub { |
351 | my ($status, $entry) = @_; |
433 | my ($status, $entry) = @_; |