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61 | =cut |
61 | =cut |
62 | |
62 | |
63 | package IO::AIO; |
63 | package IO::AIO; |
64 | |
64 | |
65 | no warnings; |
65 | no warnings; |
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66 | use strict 'vars'; |
66 | |
67 | |
67 | use base 'Exporter'; |
68 | use base 'Exporter'; |
68 | |
69 | |
69 | use Fcntl (); |
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70 | |
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71 | BEGIN { |
70 | BEGIN { |
72 | $VERSION = '1.7'; |
71 | our $VERSION = '1.8'; |
73 | |
72 | |
74 | @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 |
75 | 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 |
76 | aio_fsync aio_fdatasync aio_readahead); |
75 | aio_fsync aio_fdatasync aio_readahead aio_rename aio_link aio_move); |
77 | @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); |
78 | max_outstanding nreqs); |
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79 | |
77 | |
80 | require XSLoader; |
78 | require XSLoader; |
81 | XSLoader::load IO::AIO, $VERSION; |
79 | XSLoader::load ("IO::AIO", $VERSION); |
82 | } |
80 | } |
83 | |
81 | |
84 | =head1 FUNCTIONS |
82 | =head1 FUNCTIONS |
85 | |
83 | |
86 | =head2 AIO FUNCTIONS |
84 | =head2 AIO FUNCTIONS |
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168 | aio_read $fh, 7, 15, $buffer, 0, sub { |
166 | aio_read $fh, 7, 15, $buffer, 0, sub { |
169 | $_[0] > 0 or die "read error: $!"; |
167 | $_[0] > 0 or die "read error: $!"; |
170 | print "read $_[0] bytes: <$buffer>\n"; |
168 | print "read $_[0] bytes: <$buffer>\n"; |
171 | }; |
169 | }; |
172 | |
170 | |
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171 | =item aio_move $srcpath, $dstpath, $callback->($status) |
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172 | |
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173 | [EXPERIMENTAL] |
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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 | |
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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 |
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180 | and copies the contents of the source file into it using C<aio_sendfile>, |
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181 | followed by restoring atime, mtime, access mode and uid/gid, in that |
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182 | order, and unlinking the C<$srcpath>. |
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183 | |
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184 | If an error occurs, the partial destination file will be unlinked, if |
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185 | possible, except when setting atime, mtime, access mode and uid/gid, where |
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186 | errors are being ignored. |
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187 | |
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188 | =cut |
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189 | |
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190 | sub aio_move($$$) { |
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191 | my ($src, $dst, $cb) = @_; |
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192 | |
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193 | aio_rename $src, $dst, sub { |
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194 | if ($_[0] && $! == EXDEV) { |
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195 | aio_open $src, O_RDONLY, 0, sub { |
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196 | if (my $src_fh = $_[0]) { |
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197 | my @stat = stat $src_fh; |
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198 | |
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199 | aio_open $dst, O_WRONLY, 0200, sub { |
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200 | if (my $dst_fh = $_[0]) { |
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201 | aio_sendfile $dst_fh, $src_fh, 0, $stat[7], sub { |
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202 | close $src_fh; |
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203 | |
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204 | if ($_[0] == $stat[7]) { |
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205 | utime $stat[8], $stat[9], $dst; |
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206 | chmod $stat[2] & 07777, $dst_fh; |
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207 | chown $stat[4], $stat[5], $dst_fh; |
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208 | close $dst_fh; |
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209 | |
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210 | aio_unlink $src, sub { |
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211 | $cb->($_[0]); |
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212 | }; |
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213 | } else { |
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214 | my $errno = $!; |
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215 | aio_unlink $dst, sub { |
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216 | $! = $errno; |
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217 | $cb->(-1); |
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218 | }; |
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219 | } |
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220 | }; |
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221 | } else { |
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222 | $cb->(-1); |
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223 | } |
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224 | }, |
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225 | |
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226 | } else { |
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227 | $cb->(-1); |
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228 | } |
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229 | }; |
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230 | } else { |
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231 | $cb->($_[0]); |
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232 | } |
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233 | }; |
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234 | } |
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235 | |
173 | =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) |
174 | |
237 | |
175 | 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 |
176 | 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 |
177 | 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 |
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232 | =item aio_unlink $pathname, $callback->($status) |
295 | =item aio_unlink $pathname, $callback->($status) |
233 | |
296 | |
234 | Asynchronously unlink (delete) a file and call the callback with the |
297 | Asynchronously unlink (delete) a file and call the callback with the |
235 | result code. |
298 | result code. |
236 | |
299 | |
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300 | =item aio_link $srcpath, $dstpath, $callback->($status) |
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301 | |
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302 | Asynchronously create a new link to the existing object at C<$srcpath> at |
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303 | the path C<$dstpath> and call the callback with the result code. |
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304 | |
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305 | =item aio_symlink $srcpath, $dstpath, $callback->($status) |
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306 | |
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307 | Asynchronously create a new symbolic link to the existing object at C<$srcpath> at |
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308 | the path C<$dstpath> and call the callback with the result code. |
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309 | |
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310 | =item aio_rename $srcpath, $dstpath, $callback->($status) |
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311 | |
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312 | Asynchronously rename the object at C<$srcpath> to C<$dstpath>, just as |
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313 | rename(2) and call the callback with the result code. |
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314 | |
237 | =item aio_rmdir $pathname, $callback->($status) |
315 | =item aio_rmdir $pathname, $callback->($status) |
238 | |
316 | |
239 | Asynchronously rmdir (delete) a directory and call the callback with the |
317 | Asynchronously rmdir (delete) a directory and call the callback with the |
240 | result code. |
318 | result code. |
241 | |
319 | |
242 | =item aio_readdir $pathname $callback->($entries) |
320 | =item aio_readdir $pathname, $callback->($entries) |
243 | |
321 | |
244 | 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 |
245 | directory (i.e. opendir + readdir + closedir). The entries will not be |
323 | directory (i.e. opendir + readdir + closedir). The entries will not be |
246 | sorted, and will B<NOT> include the C<.> and C<..> entries. |
324 | sorted, and will B<NOT> include the C<.> and C<..> entries. |
247 | |
325 | |
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282 | |
360 | |
283 | Then entires will be sorted into likely directories (everything without a |
361 | Then entires will be sorted into likely directories (everything without a |
284 | non-initial dot) and likely non-directories (everything else). Then every |
362 | non-initial dot) and likely non-directories (everything else). Then every |
285 | 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 |
286 | faster because filesystems might detect the type of the entry without |
364 | faster because filesystems might detect the type of the entry without |
287 | 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, |
288 | 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 |
289 | will be checked seperately). |
367 | will be checked seperately). |
290 | |
368 | |
291 | 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 |
292 | entries is assumed to be non-directories. |
370 | entries is assumed to be non-directories. |
… | |
… | |
298 | |
376 | |
299 | $maxreq = 8 if $maxreq <= 0; |
377 | $maxreq = 8 if $maxreq <= 0; |
300 | |
378 | |
301 | # stat once |
379 | # stat once |
302 | aio_stat $path, sub { |
380 | aio_stat $path, sub { |
303 | $cb->() if $_[0]; |
381 | return $cb->() if $_[0]; |
304 | my $hash1 = join ":", (stat _)[0,1,3,7,9]; |
382 | my $hash1 = join ":", (stat _)[0,1,3,7,9]; |
305 | |
383 | |
306 | # read the directory entries |
384 | # read the directory entries |
307 | aio_readdir $path, sub { |
385 | aio_readdir $path, sub { |
308 | my $entries = shift |
386 | my $entries = shift |
… | |
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345 | } |
423 | } |
346 | } elsif (!$nreq) { |
424 | } elsif (!$nreq) { |
347 | # finished |
425 | # finished |
348 | undef $statcb; |
426 | undef $statcb; |
349 | undef $schedcb; |
427 | undef $schedcb; |
350 | $cb->(\@dirs, \@nondirs); |
428 | $cb->(\@dirs, \@nondirs) if $cb; |
351 | undef $cb; |
429 | undef $cb; |
352 | } |
430 | } |
353 | }; |
431 | }; |
354 | $statcb = sub { |
432 | $statcb = sub { |
355 | my ($status, $entry) = @_; |
433 | my ($status, $entry) = @_; |