… | |
… | |
26 | $req->cancel; # cancel request if still in queue |
26 | $req->cancel; # cancel request if still in queue |
27 | |
27 | |
28 | my $grp = aio_group sub { print "all stats done\n" }; |
28 | my $grp = aio_group sub { print "all stats done\n" }; |
29 | add $grp aio_stat "..." for ...; |
29 | add $grp aio_stat "..." for ...; |
30 | |
30 | |
|
|
31 | # AnyEvent integration (EV, Event, Glib, Tk, POE, urxvt, pureperl...) |
|
|
32 | use AnyEvent::AIO; |
|
|
33 | |
31 | # AnyEvent integration |
34 | # EV integration |
32 | open my $fh, "<&=" . IO::AIO::poll_fileno or die "$!"; |
35 | my $w = EV::io IO::AIO::poll_fileno, EV::READ, \&IO::AIO::poll_cb; |
33 | my $w = AnyEvent->io (fh => $fh, poll => 'r', cb => sub { IO::AIO::poll_cb }); |
|
|
34 | |
36 | |
35 | # Event integration |
37 | # Event integration |
36 | Event->io (fd => IO::AIO::poll_fileno, |
38 | Event->io (fd => IO::AIO::poll_fileno, |
37 | poll => 'r', |
39 | poll => 'r', |
38 | cb => \&IO::AIO::poll_cb); |
40 | cb => \&IO::AIO::poll_cb); |
… | |
… | |
62 | etc.), but can also be used to easily do operations in parallel that are |
64 | etc.), but can also be used to easily do operations in parallel that are |
63 | normally done sequentially, e.g. stat'ing many files, which is much faster |
65 | normally done sequentially, e.g. stat'ing many files, which is much faster |
64 | on a RAID volume or over NFS when you do a number of stat operations |
66 | on a RAID volume or over NFS when you do a number of stat operations |
65 | concurrently. |
67 | concurrently. |
66 | |
68 | |
67 | While most of this works on all types of file descriptors (for example |
69 | While most of this works on all types of file descriptors (for |
68 | sockets), using these functions on file descriptors that support |
70 | example sockets), using these functions on file descriptors that |
69 | nonblocking operation (again, sockets, pipes etc.) is very inefficient or |
71 | support nonblocking operation (again, sockets, pipes etc.) is very |
70 | might not work (aio_read fails on sockets/pipes/fifos). Use an event loop |
72 | inefficient. Use an event loop for that (such as the L<Event|Event> |
71 | for that (such as the L<Event|Event> module): IO::AIO will naturally fit |
73 | module): IO::AIO will naturally fit into such an event loop itself. |
72 | into such an event loop itself. |
|
|
73 | |
74 | |
74 | In this version, a number of threads are started that execute your |
75 | In this version, a number of threads are started that execute your |
75 | requests and signal their completion. You don't need thread support |
76 | requests and signal their completion. You don't need thread support |
76 | in perl, and the threads created by this module will not be visible |
77 | in perl, and the threads created by this module will not be visible |
77 | to perl. In the future, this module might make use of the native aio |
78 | to perl. In the future, this module might make use of the native aio |
… | |
… | |
79 | not well-supported or restricted (GNU/Linux doesn't allow them on normal |
80 | not well-supported or restricted (GNU/Linux doesn't allow them on normal |
80 | files currently, for example), and they would only support aio_read and |
81 | files currently, for example), and they would only support aio_read and |
81 | aio_write, so the remaining functionality would have to be implemented |
82 | aio_write, so the remaining functionality would have to be implemented |
82 | using threads anyway. |
83 | using threads anyway. |
83 | |
84 | |
84 | Although the module will work with in the presence of other (Perl-) |
85 | Although the module will work in the presence of other (Perl-) threads, |
85 | threads, it is currently not reentrant in any way, so use appropriate |
86 | it is currently not reentrant in any way, so use appropriate locking |
86 | locking yourself, always call C<poll_cb> from within the same thread, or |
87 | yourself, always call C<poll_cb> from within the same thread, or never |
87 | never call C<poll_cb> (or other C<aio_> functions) recursively. |
88 | call C<poll_cb> (or other C<aio_> functions) recursively. |
88 | |
89 | |
89 | =head2 EXAMPLE |
90 | =head2 EXAMPLE |
90 | |
91 | |
91 | This is a simple example that uses the Event module and loads |
92 | This is a simple example that uses the Event module and loads |
92 | F</etc/passwd> asynchronously: |
93 | F</etc/passwd> asynchronously: |
… | |
… | |
184 | |
185 | |
185 | =cut |
186 | =cut |
186 | |
187 | |
187 | package IO::AIO; |
188 | package IO::AIO; |
188 | |
189 | |
|
|
190 | use Carp (); |
|
|
191 | |
189 | no warnings; |
192 | no warnings; |
190 | use strict 'vars'; |
193 | use strict 'vars'; |
191 | |
194 | |
192 | use base 'Exporter'; |
195 | use base 'Exporter'; |
193 | |
196 | |
194 | BEGIN { |
197 | BEGIN { |
195 | our $VERSION = '2.32'; |
198 | our $VERSION = '3.02'; |
196 | |
199 | |
197 | our @AIO_REQ = qw(aio_sendfile aio_read aio_write aio_open aio_close aio_stat |
200 | our @AIO_REQ = qw(aio_sendfile aio_read aio_write aio_open aio_close |
198 | aio_lstat aio_unlink aio_rmdir aio_readdir aio_scandir aio_symlink |
201 | aio_stat aio_lstat aio_unlink aio_rmdir aio_readdir |
199 | aio_readlink aio_fsync aio_fdatasync aio_readahead aio_rename aio_link |
202 | aio_scandir aio_symlink aio_readlink aio_sync aio_fsync |
200 | aio_move aio_copy aio_group aio_nop aio_mknod aio_load aio_rmtree); |
203 | aio_fdatasync aio_pathsync aio_readahead |
|
|
204 | aio_rename aio_link aio_move aio_copy aio_group |
|
|
205 | aio_nop aio_mknod aio_load aio_rmtree aio_mkdir aio_chown |
|
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206 | aio_chmod aio_utime aio_truncate); |
|
|
207 | |
201 | our @EXPORT = (@AIO_REQ, qw(aioreq_pri aioreq_nice aio_block)); |
208 | our @EXPORT = (@AIO_REQ, qw(aioreq_pri aioreq_nice)); |
202 | our @EXPORT_OK = qw(poll_fileno poll_cb poll_wait flush |
209 | our @EXPORT_OK = qw(poll_fileno poll_cb poll_wait flush |
203 | min_parallel max_parallel max_idle |
210 | min_parallel max_parallel max_idle |
204 | nreqs nready npending nthreads |
211 | nreqs nready npending nthreads |
205 | max_poll_time max_poll_reqs); |
212 | max_poll_time max_poll_reqs); |
206 | |
213 | |
… | |
… | |
271 | aio_read $_[0], ..., sub { |
278 | aio_read $_[0], ..., sub { |
272 | ... |
279 | ... |
273 | }; |
280 | }; |
274 | }; |
281 | }; |
275 | |
282 | |
|
|
283 | |
276 | =item aioreq_nice $pri_adjust |
284 | =item aioreq_nice $pri_adjust |
277 | |
285 | |
278 | Similar to C<aioreq_pri>, but subtracts the given value from the current |
286 | Similar to C<aioreq_pri>, but subtracts the given value from the current |
279 | priority, so the effect is cumulative. |
287 | priority, so the effect is cumulative. |
|
|
288 | |
280 | |
289 | |
281 | =item aio_open $pathname, $flags, $mode, $callback->($fh) |
290 | =item aio_open $pathname, $flags, $mode, $callback->($fh) |
282 | |
291 | |
283 | Asynchronously open or create a file and call the callback with a newly |
292 | Asynchronously open or create a file and call the callback with a newly |
284 | created filehandle for the file. |
293 | created filehandle for the file. |
… | |
… | |
290 | list. They are the same as used by C<sysopen>. |
299 | list. They are the same as used by C<sysopen>. |
291 | |
300 | |
292 | Likewise, C<$mode> specifies the mode of the newly created file, if it |
301 | Likewise, C<$mode> specifies the mode of the newly created file, if it |
293 | didn't exist and C<O_CREAT> has been given, just like perl's C<sysopen>, |
302 | didn't exist and C<O_CREAT> has been given, just like perl's C<sysopen>, |
294 | except that it is mandatory (i.e. use C<0> if you don't create new files, |
303 | except that it is mandatory (i.e. use C<0> if you don't create new files, |
295 | and C<0666> or C<0777> if you do). |
304 | and C<0666> or C<0777> if you do). Note that the C<$mode> will be modified |
|
|
305 | by the umask in effect then the request is being executed, so better never |
|
|
306 | change the umask. |
296 | |
307 | |
297 | Example: |
308 | Example: |
298 | |
309 | |
299 | aio_open "/etc/passwd", O_RDONLY, 0, sub { |
310 | aio_open "/etc/passwd", O_RDONLY, 0, sub { |
300 | if ($_[0]) { |
311 | if ($_[0]) { |
… | |
… | |
303 | } else { |
314 | } else { |
304 | die "open failed: $!\n"; |
315 | die "open failed: $!\n"; |
305 | } |
316 | } |
306 | }; |
317 | }; |
307 | |
318 | |
|
|
319 | |
308 | =item aio_close $fh, $callback->($status) |
320 | =item aio_close $fh, $callback->($status) |
309 | |
321 | |
310 | Asynchronously close a file and call the callback with the result |
322 | Asynchronously close a file and call the callback with the result |
311 | code. I<WARNING:> although accepted, you should not pass in a perl |
323 | code. |
312 | filehandle here, as perl will likely close the file descriptor another |
|
|
313 | time when the filehandle is destroyed. Normally, you can safely call perls |
|
|
314 | C<close> or just let filehandles go out of scope. |
|
|
315 | |
324 | |
316 | This is supposed to be a bug in the API, so that might change. It's |
325 | Unfortunately, you can't do this to perl. Perl I<insists> very strongly on |
317 | therefore best to avoid this function. |
326 | closing the file descriptor associated with the filehandle itself. |
|
|
327 | |
|
|
328 | Therefore, C<aio_close> will not close the filehandle - instead it will |
|
|
329 | use dup2 to overwrite the file descriptor with the write-end of a pipe |
|
|
330 | (the pipe fd will be created on demand and will be cached). |
|
|
331 | |
|
|
332 | Or in other words: the file descriptor will be closed, but it will not be |
|
|
333 | free for reuse until the perl filehandle is closed. |
|
|
334 | |
|
|
335 | =cut |
318 | |
336 | |
319 | =item aio_read $fh,$offset,$length, $data,$dataoffset, $callback->($retval) |
337 | =item aio_read $fh,$offset,$length, $data,$dataoffset, $callback->($retval) |
320 | |
338 | |
321 | =item aio_write $fh,$offset,$length, $data,$dataoffset, $callback->($retval) |
339 | =item aio_write $fh,$offset,$length, $data,$dataoffset, $callback->($retval) |
322 | |
340 | |
323 | Reads or writes C<length> bytes from the specified C<fh> and C<offset> |
341 | Reads or writes C<$length> bytes from the specified C<$fh> and C<$offset> |
324 | into the scalar given by C<data> and offset C<dataoffset> and calls the |
342 | into the scalar given by C<$data> and offset C<$dataoffset> and calls the |
325 | callback without the actual number of bytes read (or -1 on error, just |
343 | callback without the actual number of bytes read (or -1 on error, just |
326 | like the syscall). |
344 | like the syscall). |
327 | |
345 | |
|
|
346 | If C<$offset> is undefined, then the current file descriptor offset will |
|
|
347 | be used (and updated), otherwise the file descriptor offset will not be |
|
|
348 | changed by these calls. |
|
|
349 | |
|
|
350 | If C<$length> is undefined in C<aio_write>, use the remaining length of C<$data>. |
|
|
351 | |
|
|
352 | If C<$dataoffset> is less than zero, it will be counted from the end of |
|
|
353 | C<$data>. |
|
|
354 | |
328 | The C<$data> scalar I<MUST NOT> be modified in any way while the request |
355 | The C<$data> scalar I<MUST NOT> be modified in any way while the request |
329 | is outstanding. Modifying it can result in segfaults or WW3 (if the |
356 | is outstanding. Modifying it can result in segfaults or World War III (if |
330 | necessary/optional hardware is installed). |
357 | the necessary/optional hardware is installed). |
331 | |
358 | |
332 | Example: Read 15 bytes at offset 7 into scalar C<$buffer>, starting at |
359 | Example: Read 15 bytes at offset 7 into scalar C<$buffer>, starting at |
333 | offset C<0> within the scalar: |
360 | offset C<0> within the scalar: |
334 | |
361 | |
335 | aio_read $fh, 7, 15, $buffer, 0, sub { |
362 | aio_read $fh, 7, 15, $buffer, 0, sub { |
336 | $_[0] > 0 or die "read error: $!"; |
363 | $_[0] > 0 or die "read error: $!"; |
337 | print "read $_[0] bytes: <$buffer>\n"; |
364 | print "read $_[0] bytes: <$buffer>\n"; |
338 | }; |
365 | }; |
|
|
366 | |
339 | |
367 | |
340 | =item aio_sendfile $out_fh, $in_fh, $in_offset, $length, $callback->($retval) |
368 | =item aio_sendfile $out_fh, $in_fh, $in_offset, $length, $callback->($retval) |
341 | |
369 | |
342 | Tries to copy C<$length> bytes from C<$in_fh> to C<$out_fh>. It starts |
370 | Tries to copy C<$length> bytes from C<$in_fh> to C<$out_fh>. It starts |
343 | reading at byte offset C<$in_offset>, and starts writing at the current |
371 | reading at byte offset C<$in_offset>, and starts writing at the current |
… | |
… | |
357 | C<$in_fh> than are written, and there is no way to find out how many |
385 | C<$in_fh> than are written, and there is no way to find out how many |
358 | bytes have been read from C<aio_sendfile> alone, as C<aio_sendfile> only |
386 | bytes have been read from C<aio_sendfile> alone, as C<aio_sendfile> only |
359 | provides the number of bytes written to C<$out_fh>. Only if the result |
387 | provides the number of bytes written to C<$out_fh>. Only if the result |
360 | value equals C<$length> one can assume that C<$length> bytes have been |
388 | value equals C<$length> one can assume that C<$length> bytes have been |
361 | read. |
389 | read. |
|
|
390 | |
362 | |
391 | |
363 | =item aio_readahead $fh,$offset,$length, $callback->($retval) |
392 | =item aio_readahead $fh,$offset,$length, $callback->($retval) |
364 | |
393 | |
365 | C<aio_readahead> populates the page cache with data from a file so that |
394 | C<aio_readahead> populates the page cache with data from a file so that |
366 | subsequent reads from that file will not block on disk I/O. The C<$offset> |
395 | subsequent reads from that file will not block on disk I/O. The C<$offset> |
… | |
… | |
372 | file. The current file offset of the file is left unchanged. |
401 | file. The current file offset of the file is left unchanged. |
373 | |
402 | |
374 | If that syscall doesn't exist (likely if your OS isn't Linux) it will be |
403 | If that syscall doesn't exist (likely if your OS isn't Linux) it will be |
375 | emulated by simply reading the data, which would have a similar effect. |
404 | emulated by simply reading the data, which would have a similar effect. |
376 | |
405 | |
|
|
406 | |
377 | =item aio_stat $fh_or_path, $callback->($status) |
407 | =item aio_stat $fh_or_path, $callback->($status) |
378 | |
408 | |
379 | =item aio_lstat $fh, $callback->($status) |
409 | =item aio_lstat $fh, $callback->($status) |
380 | |
410 | |
381 | Works like perl's C<stat> or C<lstat> in void context. The callback will |
411 | Works like perl's C<stat> or C<lstat> in void context. The callback will |
… | |
… | |
394 | aio_stat "/etc/passwd", sub { |
424 | aio_stat "/etc/passwd", sub { |
395 | $_[0] and die "stat failed: $!"; |
425 | $_[0] and die "stat failed: $!"; |
396 | print "size is ", -s _, "\n"; |
426 | print "size is ", -s _, "\n"; |
397 | }; |
427 | }; |
398 | |
428 | |
|
|
429 | |
|
|
430 | =item aio_utime $fh_or_path, $atime, $mtime, $callback->($status) |
|
|
431 | |
|
|
432 | Works like perl's C<utime> function (including the special case of $atime |
|
|
433 | and $mtime being undef). Fractional times are supported if the underlying |
|
|
434 | syscalls support them. |
|
|
435 | |
|
|
436 | When called with a pathname, uses utimes(2) if available, otherwise |
|
|
437 | utime(2). If called on a file descriptor, uses futimes(2) if available, |
|
|
438 | otherwise returns ENOSYS, so this is not portable. |
|
|
439 | |
|
|
440 | Examples: |
|
|
441 | |
|
|
442 | # set atime and mtime to current time (basically touch(1)): |
|
|
443 | aio_utime "path", undef, undef; |
|
|
444 | # set atime to current time and mtime to beginning of the epoch: |
|
|
445 | aio_utime "path", time, undef; # undef==0 |
|
|
446 | |
|
|
447 | |
|
|
448 | =item aio_chown $fh_or_path, $uid, $gid, $callback->($status) |
|
|
449 | |
|
|
450 | Works like perl's C<chown> function, except that C<undef> for either $uid |
|
|
451 | or $gid is being interpreted as "do not change" (but -1 can also be used). |
|
|
452 | |
|
|
453 | Examples: |
|
|
454 | |
|
|
455 | # same as "chown root path" in the shell: |
|
|
456 | aio_chown "path", 0, -1; |
|
|
457 | # same as above: |
|
|
458 | aio_chown "path", 0, undef; |
|
|
459 | |
|
|
460 | |
|
|
461 | =item aio_truncate $fh_or_path, $offset, $callback->($status) |
|
|
462 | |
|
|
463 | Works like truncate(2) or ftruncate(2). |
|
|
464 | |
|
|
465 | |
|
|
466 | =item aio_chmod $fh_or_path, $mode, $callback->($status) |
|
|
467 | |
|
|
468 | Works like perl's C<chmod> function. |
|
|
469 | |
|
|
470 | |
399 | =item aio_unlink $pathname, $callback->($status) |
471 | =item aio_unlink $pathname, $callback->($status) |
400 | |
472 | |
401 | Asynchronously unlink (delete) a file and call the callback with the |
473 | Asynchronously unlink (delete) a file and call the callback with the |
402 | result code. |
474 | result code. |
403 | |
475 | |
|
|
476 | |
404 | =item aio_mknod $path, $mode, $dev, $callback->($status) |
477 | =item aio_mknod $path, $mode, $dev, $callback->($status) |
405 | |
478 | |
406 | [EXPERIMENTAL] |
479 | [EXPERIMENTAL] |
407 | |
480 | |
408 | Asynchronously create a device node (or fifo). See mknod(2). |
481 | Asynchronously create a device node (or fifo). See mknod(2). |
409 | |
482 | |
410 | The only (POSIX-) portable way of calling this function is: |
483 | The only (POSIX-) portable way of calling this function is: |
411 | |
484 | |
412 | aio_mknod $path, IO::AIO::S_IFIFO | $mode, 0, sub { ... |
485 | aio_mknod $path, IO::AIO::S_IFIFO | $mode, 0, sub { ... |
|
|
486 | |
413 | |
487 | |
414 | =item aio_link $srcpath, $dstpath, $callback->($status) |
488 | =item aio_link $srcpath, $dstpath, $callback->($status) |
415 | |
489 | |
416 | Asynchronously create a new link to the existing object at C<$srcpath> at |
490 | Asynchronously create a new link to the existing object at C<$srcpath> at |
417 | the path C<$dstpath> and call the callback with the result code. |
491 | the path C<$dstpath> and call the callback with the result code. |
418 | |
492 | |
|
|
493 | |
419 | =item aio_symlink $srcpath, $dstpath, $callback->($status) |
494 | =item aio_symlink $srcpath, $dstpath, $callback->($status) |
420 | |
495 | |
421 | Asynchronously create a new symbolic link to the existing object at C<$srcpath> at |
496 | Asynchronously create a new symbolic link to the existing object at C<$srcpath> at |
422 | the path C<$dstpath> and call the callback with the result code. |
497 | the path C<$dstpath> and call the callback with the result code. |
|
|
498 | |
423 | |
499 | |
424 | =item aio_readlink $path, $callback->($link) |
500 | =item aio_readlink $path, $callback->($link) |
425 | |
501 | |
426 | Asynchronously read the symlink specified by C<$path> and pass it to |
502 | Asynchronously read the symlink specified by C<$path> and pass it to |
427 | the callback. If an error occurs, nothing or undef gets passed to the |
503 | the callback. If an error occurs, nothing or undef gets passed to the |
428 | callback. |
504 | callback. |
429 | |
505 | |
|
|
506 | |
430 | =item aio_rename $srcpath, $dstpath, $callback->($status) |
507 | =item aio_rename $srcpath, $dstpath, $callback->($status) |
431 | |
508 | |
432 | Asynchronously rename the object at C<$srcpath> to C<$dstpath>, just as |
509 | Asynchronously rename the object at C<$srcpath> to C<$dstpath>, just as |
433 | rename(2) and call the callback with the result code. |
510 | rename(2) and call the callback with the result code. |
434 | |
511 | |
|
|
512 | |
|
|
513 | =item aio_mkdir $pathname, $mode, $callback->($status) |
|
|
514 | |
|
|
515 | Asynchronously mkdir (create) a directory and call the callback with |
|
|
516 | the result code. C<$mode> will be modified by the umask at the time the |
|
|
517 | request is executed, so do not change your umask. |
|
|
518 | |
|
|
519 | |
435 | =item aio_rmdir $pathname, $callback->($status) |
520 | =item aio_rmdir $pathname, $callback->($status) |
436 | |
521 | |
437 | Asynchronously rmdir (delete) a directory and call the callback with the |
522 | Asynchronously rmdir (delete) a directory and call the callback with the |
438 | result code. |
523 | result code. |
|
|
524 | |
439 | |
525 | |
440 | =item aio_readdir $pathname, $callback->($entries) |
526 | =item aio_readdir $pathname, $callback->($entries) |
441 | |
527 | |
442 | Unlike the POSIX call of the same name, C<aio_readdir> reads an entire |
528 | Unlike the POSIX call of the same name, C<aio_readdir> reads an entire |
443 | directory (i.e. opendir + readdir + closedir). The entries will not be |
529 | directory (i.e. opendir + readdir + closedir). The entries will not be |
444 | sorted, and will B<NOT> include the C<.> and C<..> entries. |
530 | sorted, and will B<NOT> include the C<.> and C<..> entries. |
445 | |
531 | |
446 | The callback a single argument which is either C<undef> or an array-ref |
532 | The callback a single argument which is either C<undef> or an array-ref |
447 | with the filenames. |
533 | with the filenames. |
448 | |
534 | |
|
|
535 | |
449 | =item aio_load $path, $data, $callback->($status) |
536 | =item aio_load $path, $data, $callback->($status) |
450 | |
537 | |
451 | This is a composite request that tries to fully load the given file into |
538 | This is a composite request that tries to fully load the given file into |
452 | memory. Status is the same as with aio_read. |
539 | memory. Status is the same as with aio_read. |
453 | |
540 | |
454 | =cut |
541 | =cut |
455 | |
542 | |
456 | sub aio_load($$;$) { |
543 | sub aio_load($$;$) { |
457 | aio_block { |
|
|
458 | my ($path, undef, $cb) = @_; |
544 | my ($path, undef, $cb) = @_; |
459 | my $data = \$_[1]; |
545 | my $data = \$_[1]; |
460 | |
546 | |
461 | my $pri = aioreq_pri; |
547 | my $pri = aioreq_pri; |
462 | my $grp = aio_group $cb; |
548 | my $grp = aio_group $cb; |
|
|
549 | |
|
|
550 | aioreq_pri $pri; |
|
|
551 | add $grp aio_open $path, O_RDONLY, 0, sub { |
|
|
552 | my $fh = shift |
|
|
553 | or return $grp->result (-1); |
463 | |
554 | |
464 | aioreq_pri $pri; |
555 | aioreq_pri $pri; |
465 | add $grp aio_open $path, O_RDONLY, 0, sub { |
|
|
466 | my ($fh) = @_ |
|
|
467 | or return $grp->result (-1); |
|
|
468 | |
|
|
469 | aioreq_pri $pri; |
|
|
470 | add $grp aio_read $fh, 0, (-s $fh), $$data, 0, sub { |
556 | add $grp aio_read $fh, 0, (-s $fh), $$data, 0, sub { |
471 | $grp->result ($_[0]); |
557 | $grp->result ($_[0]); |
472 | }; |
|
|
473 | }; |
558 | }; |
474 | |
|
|
475 | $grp |
|
|
476 | } |
559 | }; |
|
|
560 | |
|
|
561 | $grp |
477 | } |
562 | } |
478 | |
563 | |
479 | =item aio_copy $srcpath, $dstpath, $callback->($status) |
564 | =item aio_copy $srcpath, $dstpath, $callback->($status) |
480 | |
565 | |
481 | Try to copy the I<file> (directories not supported as either source or |
566 | Try to copy the I<file> (directories not supported as either source or |
… | |
… | |
492 | errors are being ignored. |
577 | errors are being ignored. |
493 | |
578 | |
494 | =cut |
579 | =cut |
495 | |
580 | |
496 | sub aio_copy($$;$) { |
581 | sub aio_copy($$;$) { |
497 | aio_block { |
|
|
498 | my ($src, $dst, $cb) = @_; |
582 | my ($src, $dst, $cb) = @_; |
499 | |
583 | |
500 | my $pri = aioreq_pri; |
584 | my $pri = aioreq_pri; |
501 | my $grp = aio_group $cb; |
585 | my $grp = aio_group $cb; |
502 | |
586 | |
503 | aioreq_pri $pri; |
587 | aioreq_pri $pri; |
504 | add $grp aio_open $src, O_RDONLY, 0, sub { |
588 | add $grp aio_open $src, O_RDONLY, 0, sub { |
505 | if (my $src_fh = $_[0]) { |
589 | if (my $src_fh = $_[0]) { |
506 | my @stat = stat $src_fh; |
590 | my @stat = stat $src_fh; |
507 | |
591 | |
508 | aioreq_pri $pri; |
592 | aioreq_pri $pri; |
509 | add $grp aio_open $dst, O_CREAT | O_WRONLY | O_TRUNC, 0200, sub { |
593 | add $grp aio_open $dst, O_CREAT | O_WRONLY | O_TRUNC, 0200, sub { |
510 | if (my $dst_fh = $_[0]) { |
594 | if (my $dst_fh = $_[0]) { |
511 | aioreq_pri $pri; |
595 | aioreq_pri $pri; |
512 | add $grp aio_sendfile $dst_fh, $src_fh, 0, $stat[7], sub { |
596 | add $grp aio_sendfile $dst_fh, $src_fh, 0, $stat[7], sub { |
513 | if ($_[0] == $stat[7]) { |
597 | if ($_[0] == $stat[7]) { |
514 | $grp->result (0); |
598 | $grp->result (0); |
515 | close $src_fh; |
599 | close $src_fh; |
516 | |
600 | |
517 | # those should not normally block. should. should. |
601 | # those should not normally block. should. should. |
518 | utime $stat[8], $stat[9], $dst; |
602 | utime $stat[8], $stat[9], $dst; |
519 | chmod $stat[2] & 07777, $dst_fh; |
603 | chmod $stat[2] & 07777, $dst_fh; |
520 | chown $stat[4], $stat[5], $dst_fh; |
604 | chown $stat[4], $stat[5], $dst_fh; |
|
|
605 | |
|
|
606 | aioreq_pri $pri; |
521 | close $dst_fh; |
607 | add $grp aio_close $dst_fh; |
522 | } else { |
608 | } else { |
523 | $grp->result (-1); |
609 | $grp->result (-1); |
524 | close $src_fh; |
610 | close $src_fh; |
525 | close $dst_fh; |
611 | close $dst_fh; |
526 | |
612 | |
527 | aioreq $pri; |
613 | aioreq $pri; |
528 | add $grp aio_unlink $dst; |
614 | add $grp aio_unlink $dst; |
529 | } |
|
|
530 | }; |
615 | } |
531 | } else { |
|
|
532 | $grp->result (-1); |
|
|
533 | } |
616 | }; |
|
|
617 | } else { |
|
|
618 | $grp->result (-1); |
534 | }, |
619 | } |
535 | |
|
|
536 | } else { |
|
|
537 | $grp->result (-1); |
|
|
538 | } |
620 | }, |
|
|
621 | |
|
|
622 | } else { |
|
|
623 | $grp->result (-1); |
539 | }; |
624 | } |
540 | |
|
|
541 | $grp |
|
|
542 | } |
625 | }; |
|
|
626 | |
|
|
627 | $grp |
543 | } |
628 | } |
544 | |
629 | |
545 | =item aio_move $srcpath, $dstpath, $callback->($status) |
630 | =item aio_move $srcpath, $dstpath, $callback->($status) |
546 | |
631 | |
547 | Try to move the I<file> (directories not supported as either source or |
632 | Try to move the I<file> (directories not supported as either source or |
… | |
… | |
553 | that is successful, unlinking the C<$srcpath>. |
638 | that is successful, unlinking the C<$srcpath>. |
554 | |
639 | |
555 | =cut |
640 | =cut |
556 | |
641 | |
557 | sub aio_move($$;$) { |
642 | sub aio_move($$;$) { |
558 | aio_block { |
|
|
559 | my ($src, $dst, $cb) = @_; |
643 | my ($src, $dst, $cb) = @_; |
560 | |
644 | |
561 | my $pri = aioreq_pri; |
645 | my $pri = aioreq_pri; |
562 | my $grp = aio_group $cb; |
646 | my $grp = aio_group $cb; |
563 | |
647 | |
564 | aioreq_pri $pri; |
648 | aioreq_pri $pri; |
565 | add $grp aio_rename $src, $dst, sub { |
649 | add $grp aio_rename $src, $dst, sub { |
566 | if ($_[0] && $! == EXDEV) { |
650 | if ($_[0] && $! == EXDEV) { |
567 | aioreq_pri $pri; |
651 | aioreq_pri $pri; |
568 | add $grp aio_copy $src, $dst, sub { |
652 | add $grp aio_copy $src, $dst, sub { |
569 | $grp->result ($_[0]); |
|
|
570 | |
|
|
571 | if (!$_[0]) { |
|
|
572 | aioreq_pri $pri; |
|
|
573 | add $grp aio_unlink $src; |
|
|
574 | } |
|
|
575 | }; |
|
|
576 | } else { |
|
|
577 | $grp->result ($_[0]); |
653 | $grp->result ($_[0]); |
|
|
654 | |
|
|
655 | if (!$_[0]) { |
|
|
656 | aioreq_pri $pri; |
|
|
657 | add $grp aio_unlink $src; |
|
|
658 | } |
578 | } |
659 | }; |
|
|
660 | } else { |
|
|
661 | $grp->result ($_[0]); |
579 | }; |
662 | } |
580 | |
|
|
581 | $grp |
|
|
582 | } |
663 | }; |
|
|
664 | |
|
|
665 | $grp |
583 | } |
666 | } |
584 | |
667 | |
585 | =item aio_scandir $path, $maxreq, $callback->($dirs, $nondirs) |
668 | =item aio_scandir $path, $maxreq, $callback->($dirs, $nondirs) |
586 | |
669 | |
587 | Scans a directory (similar to C<aio_readdir>) but additionally tries to |
670 | Scans a directory (similar to C<aio_readdir>) but additionally tries to |
… | |
… | |
634 | as those tend to return 0 or 1 as link counts, which disables the |
717 | as those tend to return 0 or 1 as link counts, which disables the |
635 | directory counting heuristic. |
718 | directory counting heuristic. |
636 | |
719 | |
637 | =cut |
720 | =cut |
638 | |
721 | |
639 | sub aio_scandir($$$) { |
722 | sub aio_scandir($$;$) { |
640 | aio_block { |
|
|
641 | my ($path, $maxreq, $cb) = @_; |
723 | my ($path, $maxreq, $cb) = @_; |
642 | |
724 | |
643 | my $pri = aioreq_pri; |
725 | my $pri = aioreq_pri; |
644 | |
726 | |
645 | my $grp = aio_group $cb; |
727 | my $grp = aio_group $cb; |
646 | |
728 | |
647 | $maxreq = 4 if $maxreq <= 0; |
729 | $maxreq = 4 if $maxreq <= 0; |
648 | |
730 | |
649 | # stat once |
731 | # stat once |
|
|
732 | aioreq_pri $pri; |
|
|
733 | add $grp aio_stat $path, sub { |
|
|
734 | return $grp->result () if $_[0]; |
|
|
735 | my $now = time; |
|
|
736 | my $hash1 = join ":", (stat _)[0,1,3,7,9]; |
|
|
737 | |
|
|
738 | # read the directory entries |
650 | aioreq_pri $pri; |
739 | aioreq_pri $pri; |
651 | add $grp aio_stat $path, sub { |
740 | add $grp aio_readdir $path, sub { |
|
|
741 | my $entries = shift |
652 | return $grp->result () if $_[0]; |
742 | or return $grp->result (); |
653 | my $now = time; |
|
|
654 | my $hash1 = join ":", (stat _)[0,1,3,7,9]; |
|
|
655 | |
743 | |
656 | # read the directory entries |
744 | # stat the dir another time |
657 | aioreq_pri $pri; |
745 | aioreq_pri $pri; |
658 | add $grp aio_readdir $path, sub { |
|
|
659 | my $entries = shift |
|
|
660 | or return $grp->result (); |
|
|
661 | |
|
|
662 | # stat the dir another time |
|
|
663 | aioreq_pri $pri; |
|
|
664 | add $grp aio_stat $path, sub { |
746 | add $grp aio_stat $path, sub { |
665 | my $hash2 = join ":", (stat _)[0,1,3,7,9]; |
747 | my $hash2 = join ":", (stat _)[0,1,3,7,9]; |
666 | |
748 | |
667 | my $ndirs; |
749 | my $ndirs; |
668 | |
750 | |
669 | # take the slow route if anything looks fishy |
751 | # take the slow route if anything looks fishy |
670 | if ($hash1 ne $hash2 or (stat _)[9] == $now) { |
752 | if ($hash1 ne $hash2 or (stat _)[9] == $now) { |
671 | $ndirs = -1; |
753 | $ndirs = -1; |
672 | } else { |
754 | } else { |
673 | # if nlink == 2, we are finished |
755 | # if nlink == 2, we are finished |
674 | # on non-posix-fs's, we rely on nlink < 2 |
756 | # on non-posix-fs's, we rely on nlink < 2 |
675 | $ndirs = (stat _)[3] - 2 |
757 | $ndirs = (stat _)[3] - 2 |
676 | or return $grp->result ([], $entries); |
758 | or return $grp->result ([], $entries); |
677 | } |
759 | } |
678 | |
760 | |
679 | # sort into likely dirs and likely nondirs |
761 | # sort into likely dirs and likely nondirs |
680 | # dirs == files without ".", short entries first |
762 | # dirs == files without ".", short entries first |
681 | $entries = [map $_->[0], |
763 | $entries = [map $_->[0], |
682 | sort { $b->[1] cmp $a->[1] } |
764 | sort { $b->[1] cmp $a->[1] } |
683 | map [$_, sprintf "%s%04d", (/.\./ ? "1" : "0"), length], |
765 | map [$_, sprintf "%s%04d", (/.\./ ? "1" : "0"), length], |
684 | @$entries]; |
766 | @$entries]; |
685 | |
767 | |
686 | my (@dirs, @nondirs); |
768 | my (@dirs, @nondirs); |
687 | |
769 | |
688 | my $statgrp = add $grp aio_group sub { |
770 | my $statgrp = add $grp aio_group sub { |
689 | $grp->result (\@dirs, \@nondirs); |
771 | $grp->result (\@dirs, \@nondirs); |
690 | }; |
772 | }; |
691 | |
773 | |
692 | limit $statgrp $maxreq; |
774 | limit $statgrp $maxreq; |
693 | feed $statgrp sub { |
775 | feed $statgrp sub { |
694 | return unless @$entries; |
776 | return unless @$entries; |
695 | my $entry = pop @$entries; |
777 | my $entry = pop @$entries; |
696 | |
778 | |
697 | aioreq_pri $pri; |
779 | aioreq_pri $pri; |
698 | add $statgrp aio_stat "$path/$entry/.", sub { |
780 | add $statgrp aio_stat "$path/$entry/.", sub { |
699 | if ($_[0] < 0) { |
781 | if ($_[0] < 0) { |
700 | push @nondirs, $entry; |
782 | push @nondirs, $entry; |
701 | } else { |
783 | } else { |
702 | # need to check for real directory |
784 | # need to check for real directory |
703 | aioreq_pri $pri; |
785 | aioreq_pri $pri; |
704 | add $statgrp aio_lstat "$path/$entry", sub { |
786 | add $statgrp aio_lstat "$path/$entry", sub { |
705 | if (-d _) { |
787 | if (-d _) { |
706 | push @dirs, $entry; |
788 | push @dirs, $entry; |
707 | |
789 | |
708 | unless (--$ndirs) { |
790 | unless (--$ndirs) { |
709 | push @nondirs, @$entries; |
791 | push @nondirs, @$entries; |
710 | feed $statgrp; |
792 | feed $statgrp; |
711 | } |
|
|
712 | } else { |
|
|
713 | push @nondirs, $entry; |
|
|
714 | } |
793 | } |
|
|
794 | } else { |
|
|
795 | push @nondirs, $entry; |
715 | } |
796 | } |
716 | } |
797 | } |
717 | }; |
798 | } |
718 | }; |
799 | }; |
719 | }; |
800 | }; |
720 | }; |
801 | }; |
721 | }; |
802 | }; |
722 | |
|
|
723 | $grp |
|
|
724 | } |
803 | }; |
|
|
804 | |
|
|
805 | $grp |
725 | } |
806 | } |
726 | |
807 | |
727 | =item aio_rmtree $path, $callback->($status) |
808 | =item aio_rmtree $path, $callback->($status) |
728 | |
809 | |
729 | Delete a directory tree starting (and including) C<$path>, return the status of the final C<rmdir> only. |
810 | Delete a directory tree starting (and including) C<$path>, return the |
|
|
811 | status of the final C<rmdir> only. This is a composite request that |
730 | This is a composite request that uses C<aio_scandir> to recurse into and rmdir directories, and |
812 | uses C<aio_scandir> to recurse into and rmdir directories, and unlink |
731 | unlink everything else. |
813 | everything else. |
732 | |
814 | |
733 | =cut |
815 | =cut |
734 | |
816 | |
735 | sub aio_rmtree; |
817 | sub aio_rmtree; |
736 | sub aio_rmtree { |
818 | sub aio_rmtree($;$) { |
737 | aio_block { |
|
|
738 | my ($path, $cb) = @_; |
819 | my ($path, $cb) = @_; |
739 | |
820 | |
740 | my $pri = aioreq_pri; |
821 | my $pri = aioreq_pri; |
741 | my $grp = aio_group $cb; |
822 | my $grp = aio_group $cb; |
742 | |
823 | |
743 | aioreq_pri $pri; |
824 | aioreq_pri $pri; |
744 | add $grp aio_scandir $path, 0, sub { |
825 | add $grp aio_scandir $path, 0, sub { |
745 | my ($dirs, $nondirs) = @_; |
826 | my ($dirs, $nondirs) = @_; |
746 | |
827 | |
747 | my $dirgrp = aio_group sub { |
828 | my $dirgrp = aio_group sub { |
748 | add $grp aio_rmdir $path, sub { |
829 | add $grp aio_rmdir $path, sub { |
749 | $grp->result ($_[0]); |
830 | $grp->result ($_[0]); |
750 | }; |
|
|
751 | }; |
831 | }; |
752 | |
|
|
753 | (aioreq_pri $pri), add $dirgrp aio_rmtree "$path/$_" for @$dirs; |
|
|
754 | (aioreq_pri $pri), add $dirgrp aio_unlink "$path/$_" for @$nondirs; |
|
|
755 | |
|
|
756 | add $grp $dirgrp; |
|
|
757 | }; |
832 | }; |
758 | |
833 | |
759 | $grp |
834 | (aioreq_pri $pri), add $dirgrp aio_rmtree "$path/$_" for @$dirs; |
|
|
835 | (aioreq_pri $pri), add $dirgrp aio_unlink "$path/$_" for @$nondirs; |
|
|
836 | |
|
|
837 | add $grp $dirgrp; |
760 | } |
838 | }; |
|
|
839 | |
|
|
840 | $grp |
761 | } |
841 | } |
|
|
842 | |
|
|
843 | =item aio_sync $callback->($status) |
|
|
844 | |
|
|
845 | Asynchronously call sync and call the callback when finished. |
762 | |
846 | |
763 | =item aio_fsync $fh, $callback->($status) |
847 | =item aio_fsync $fh, $callback->($status) |
764 | |
848 | |
765 | Asynchronously call fsync on the given filehandle and call the callback |
849 | Asynchronously call fsync on the given filehandle and call the callback |
766 | with the fsync result code. |
850 | with the fsync result code. |
… | |
… | |
770 | Asynchronously call fdatasync on the given filehandle and call the |
854 | Asynchronously call fdatasync on the given filehandle and call the |
771 | callback with the fdatasync result code. |
855 | callback with the fdatasync result code. |
772 | |
856 | |
773 | If this call isn't available because your OS lacks it or it couldn't be |
857 | If this call isn't available because your OS lacks it or it couldn't be |
774 | detected, it will be emulated by calling C<fsync> instead. |
858 | detected, it will be emulated by calling C<fsync> instead. |
|
|
859 | |
|
|
860 | =item aio_pathsync $path, $callback->($status) |
|
|
861 | |
|
|
862 | This request tries to open, fsync and close the given path. This is a |
|
|
863 | composite request intended tosync directories after directory operations |
|
|
864 | (E.g. rename). This might not work on all operating systems or have any |
|
|
865 | specific effect, but usually it makes sure that directory changes get |
|
|
866 | written to disc. It works for anything that can be opened for read-only, |
|
|
867 | not just directories. |
|
|
868 | |
|
|
869 | Passes C<0> when everything went ok, and C<-1> on error. |
|
|
870 | |
|
|
871 | =cut |
|
|
872 | |
|
|
873 | sub aio_pathsync($;$) { |
|
|
874 | my ($path, $cb) = @_; |
|
|
875 | |
|
|
876 | my $pri = aioreq_pri; |
|
|
877 | my $grp = aio_group $cb; |
|
|
878 | |
|
|
879 | aioreq_pri $pri; |
|
|
880 | add $grp aio_open $path, O_RDONLY, 0, sub { |
|
|
881 | my ($fh) = @_; |
|
|
882 | if ($fh) { |
|
|
883 | aioreq_pri $pri; |
|
|
884 | add $grp aio_fsync $fh, sub { |
|
|
885 | $grp->result ($_[0]); |
|
|
886 | |
|
|
887 | aioreq_pri $pri; |
|
|
888 | add $grp aio_close $fh; |
|
|
889 | }; |
|
|
890 | } else { |
|
|
891 | $grp->result (-1); |
|
|
892 | } |
|
|
893 | }; |
|
|
894 | |
|
|
895 | $grp |
|
|
896 | } |
775 | |
897 | |
776 | =item aio_group $callback->(...) |
898 | =item aio_group $callback->(...) |
777 | |
899 | |
778 | This is a very special aio request: Instead of doing something, it is a |
900 | This is a very special aio request: Instead of doing something, it is a |
779 | container for other aio requests, which is useful if you want to bundle |
901 | container for other aio requests, which is useful if you want to bundle |
… | |
… | |
916 | itself. Useful when you queued a lot of events but got a result early. |
1038 | itself. Useful when you queued a lot of events but got a result early. |
917 | |
1039 | |
918 | =item $grp->result (...) |
1040 | =item $grp->result (...) |
919 | |
1041 | |
920 | Set the result value(s) that will be passed to the group callback when all |
1042 | Set the result value(s) that will be passed to the group callback when all |
921 | subrequests have finished and set thre groups errno to the current value |
1043 | subrequests have finished and set the groups errno to the current value |
922 | of errno (just like calling C<errno> without an error number). By default, |
1044 | of errno (just like calling C<errno> without an error number). By default, |
923 | no argument will be passed and errno is zero. |
1045 | no argument will be passed and errno is zero. |
924 | |
1046 | |
925 | =item $grp->errno ([$errno]) |
1047 | =item $grp->errno ([$errno]) |
926 | |
1048 | |
… | |
… | |
1069 | Strictly equivalent to: |
1191 | Strictly equivalent to: |
1070 | |
1192 | |
1071 | IO::AIO::poll_wait, IO::AIO::poll_cb |
1193 | IO::AIO::poll_wait, IO::AIO::poll_cb |
1072 | while IO::AIO::nreqs; |
1194 | while IO::AIO::nreqs; |
1073 | |
1195 | |
|
|
1196 | =back |
|
|
1197 | |
1074 | =head3 CONTROLLING THE NUMBER OF THREADS |
1198 | =head3 CONTROLLING THE NUMBER OF THREADS |
|
|
1199 | |
|
|
1200 | =over |
1075 | |
1201 | |
1076 | =item IO::AIO::min_parallel $nthreads |
1202 | =item IO::AIO::min_parallel $nthreads |
1077 | |
1203 | |
1078 | Set the minimum number of AIO threads to C<$nthreads>. The current |
1204 | Set the minimum number of AIO threads to C<$nthreads>. The current |
1079 | default is C<8>, which means eight asynchronous operations can execute |
1205 | default is C<8>, which means eight asynchronous operations can execute |
… | |
… | |
1120 | |
1246 | |
1121 | The default is probably ok in most situations, especially if thread |
1247 | The default is probably ok in most situations, especially if thread |
1122 | creation is fast. If thread creation is very slow on your system you might |
1248 | creation is fast. If thread creation is very slow on your system you might |
1123 | want to use larger values. |
1249 | want to use larger values. |
1124 | |
1250 | |
1125 | =item $oldmaxreqs = IO::AIO::max_outstanding $maxreqs |
1251 | =item IO::AIO::max_outstanding $maxreqs |
1126 | |
1252 | |
1127 | This is a very bad function to use in interactive programs because it |
1253 | This is a very bad function to use in interactive programs because it |
1128 | blocks, and a bad way to reduce concurrency because it is inexact: Better |
1254 | blocks, and a bad way to reduce concurrency because it is inexact: Better |
1129 | use an C<aio_group> together with a feed callback. |
1255 | use an C<aio_group> together with a feed callback. |
1130 | |
1256 | |
1131 | Sets the maximum number of outstanding requests to C<$nreqs>. If you |
1257 | Sets the maximum number of outstanding requests to C<$nreqs>. If you |
1132 | to queue up more than this number of requests, the next call to the |
1258 | do queue up more than this number of requests, the next call to the |
1133 | C<poll_cb> (and C<poll_some> and other functions calling C<poll_cb>) |
1259 | C<poll_cb> (and C<poll_some> and other functions calling C<poll_cb>) |
1134 | function will block until the limit is no longer exceeded. |
1260 | function will block until the limit is no longer exceeded. |
1135 | |
1261 | |
1136 | The default value is very large, so there is no practical limit on the |
1262 | The default value is very large, so there is no practical limit on the |
1137 | number of outstanding requests. |
1263 | number of outstanding requests. |
1138 | |
1264 | |
1139 | You can still queue as many requests as you want. Therefore, |
1265 | You can still queue as many requests as you want. Therefore, |
1140 | C<max_oustsanding> is mainly useful in simple scripts (with low values) or |
1266 | C<max_outstanding> is mainly useful in simple scripts (with low values) or |
1141 | as a stop gap to shield against fatal memory overflow (with large values). |
1267 | as a stop gap to shield against fatal memory overflow (with large values). |
1142 | |
1268 | |
|
|
1269 | =back |
|
|
1270 | |
1143 | =head3 STATISTICAL INFORMATION |
1271 | =head3 STATISTICAL INFORMATION |
|
|
1272 | |
|
|
1273 | =over |
1144 | |
1274 | |
1145 | =item IO::AIO::nreqs |
1275 | =item IO::AIO::nreqs |
1146 | |
1276 | |
1147 | Returns the number of requests currently in the ready, execute or pending |
1277 | Returns the number of requests currently in the ready, execute or pending |
1148 | states (i.e. for which their callback has not been invoked yet). |
1278 | states (i.e. for which their callback has not been invoked yet). |
… | |
… | |
1163 | but not yet processed by poll_cb). |
1293 | but not yet processed by poll_cb). |
1164 | |
1294 | |
1165 | =back |
1295 | =back |
1166 | |
1296 | |
1167 | =cut |
1297 | =cut |
1168 | |
|
|
1169 | # support function to convert a fd into a perl filehandle |
|
|
1170 | sub _fd2fh { |
|
|
1171 | return undef if $_[0] < 0; |
|
|
1172 | |
|
|
1173 | # try to generate nice filehandles |
|
|
1174 | my $sym = "IO::AIO::fd#$_[0]"; |
|
|
1175 | local *$sym; |
|
|
1176 | |
|
|
1177 | open *$sym, "+<&=$_[0]" # usually works under any unix |
|
|
1178 | or open *$sym, "<&=$_[0]" # cygwin needs this |
|
|
1179 | or open *$sym, ">&=$_[0]" # or this |
|
|
1180 | or return undef; |
|
|
1181 | |
|
|
1182 | *$sym |
|
|
1183 | } |
|
|
1184 | |
1298 | |
1185 | min_parallel 8; |
1299 | min_parallel 8; |
1186 | |
1300 | |
1187 | END { flush } |
1301 | END { flush } |
1188 | |
1302 | |
… | |
… | |
1212 | bytes of memory. In addition, stat requests need a stat buffer (possibly |
1326 | bytes of memory. In addition, stat requests need a stat buffer (possibly |
1213 | a few hundred bytes), readdir requires a result buffer and so on. Perl |
1327 | a few hundred bytes), readdir requires a result buffer and so on. Perl |
1214 | scalars and other data passed into aio requests will also be locked and |
1328 | scalars and other data passed into aio requests will also be locked and |
1215 | will consume memory till the request has entered the done state. |
1329 | will consume memory till the request has entered the done state. |
1216 | |
1330 | |
1217 | This is now awfully much, so queuing lots of requests is not usually a |
1331 | This is not awfully much, so queuing lots of requests is not usually a |
1218 | problem. |
1332 | problem. |
1219 | |
1333 | |
1220 | Per-thread usage: |
1334 | Per-thread usage: |
1221 | |
1335 | |
1222 | In the execution phase, some aio requests require more memory for |
1336 | In the execution phase, some aio requests require more memory for |
… | |
… | |
1227 | |
1341 | |
1228 | Known bugs will be fixed in the next release. |
1342 | Known bugs will be fixed in the next release. |
1229 | |
1343 | |
1230 | =head1 SEE ALSO |
1344 | =head1 SEE ALSO |
1231 | |
1345 | |
1232 | L<Coro::AIO>. |
1346 | L<AnyEvent::AIO> for easy integration into event loops, L<Coro::AIO> for a |
|
|
1347 | more natural syntax. |
1233 | |
1348 | |
1234 | =head1 AUTHOR |
1349 | =head1 AUTHOR |
1235 | |
1350 | |
1236 | Marc Lehmann <schmorp@schmorp.de> |
1351 | Marc Lehmann <schmorp@schmorp.de> |
1237 | http://home.schmorp.de/ |
1352 | http://home.schmorp.de/ |