… | |
… | |
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, urxvt, pureperl...) |
31 | # AnyEvent integration (EV, Event, Glib, Tk, POE, urxvt, pureperl...) |
32 | open my $fh, "<&=" . IO::AIO::poll_fileno or die "$!"; |
32 | use AnyEvent::AIO; |
33 | my $w = AnyEvent->io (fh => $fh, poll => 'r', cb => sub { IO::AIO::poll_cb }); |
|
|
34 | |
33 | |
35 | # EV integration |
34 | # EV integration |
36 | my $w = EV::io IO::AIO::poll_fileno, EV::READ, \&IO::AIO::poll_cb; |
35 | my $w = EV::io IO::AIO::poll_fileno, EV::READ, \&IO::AIO::poll_cb; |
37 | |
36 | |
38 | # Event integration |
37 | # Event integration |
… | |
… | |
194 | use strict 'vars'; |
193 | use strict 'vars'; |
195 | |
194 | |
196 | use base 'Exporter'; |
195 | use base 'Exporter'; |
197 | |
196 | |
198 | BEGIN { |
197 | BEGIN { |
199 | our $VERSION = '2.62'; |
198 | our $VERSION = '3.1'; |
200 | |
199 | |
201 | our @AIO_REQ = qw(aio_sendfile aio_read aio_write aio_open aio_close |
200 | our @AIO_REQ = qw(aio_sendfile aio_read aio_write aio_open aio_close |
202 | aio_stat aio_lstat aio_unlink aio_rmdir aio_readdir |
201 | aio_stat aio_lstat aio_unlink aio_rmdir aio_readdir |
203 | aio_scandir aio_symlink aio_readlink aio_sync aio_fsync |
202 | aio_scandir aio_symlink aio_readlink aio_sync aio_fsync |
204 | aio_fdatasync aio_pathsync aio_readahead |
203 | aio_fdatasync aio_pathsync aio_readahead |
205 | aio_rename aio_link aio_move aio_copy aio_group |
204 | aio_rename aio_link aio_move aio_copy aio_group |
206 | aio_nop aio_mknod aio_load aio_rmtree aio_mkdir aio_chown |
205 | aio_nop aio_mknod aio_load aio_rmtree aio_mkdir aio_chown |
207 | aio_chmod aio_utime aio_truncate); |
206 | aio_chmod aio_utime aio_truncate); |
208 | |
207 | |
209 | our @EXPORT = (@AIO_REQ, qw(aioreq_pri aioreq_nice aio_block)); |
208 | our @EXPORT = (@AIO_REQ, qw(aioreq_pri aioreq_nice)); |
210 | our @EXPORT_OK = qw(poll_fileno poll_cb poll_wait flush |
209 | our @EXPORT_OK = qw(poll_fileno poll_cb poll_wait flush |
211 | min_parallel max_parallel max_idle |
210 | min_parallel max_parallel max_idle |
212 | nreqs nready npending nthreads |
211 | nreqs nready npending nthreads |
213 | max_poll_time max_poll_reqs); |
212 | max_poll_time max_poll_reqs); |
214 | |
213 | |
… | |
… | |
225 | All the C<aio_*> calls are more or less thin wrappers around the syscall |
224 | All the C<aio_*> calls are more or less thin wrappers around the syscall |
226 | with the same name (sans C<aio_>). The arguments are similar or identical, |
225 | with the same name (sans C<aio_>). The arguments are similar or identical, |
227 | and they all accept an additional (and optional) C<$callback> argument |
226 | and they all accept an additional (and optional) C<$callback> argument |
228 | which must be a code reference. This code reference will get called with |
227 | which must be a code reference. This code reference will get called with |
229 | the syscall return code (e.g. most syscalls return C<-1> on error, unlike |
228 | the syscall return code (e.g. most syscalls return C<-1> on error, unlike |
230 | perl, which usually delivers "false") as it's sole argument when the given |
229 | perl, which usually delivers "false") as its sole argument after the given |
231 | syscall has been executed asynchronously. |
230 | syscall has been executed asynchronously. |
232 | |
231 | |
233 | All functions expecting a filehandle keep a copy of the filehandle |
232 | All functions expecting a filehandle keep a copy of the filehandle |
234 | internally until the request has finished. |
233 | internally until the request has finished. |
235 | |
234 | |
… | |
… | |
249 | your pathnames to the locale (or other) encoding in effect in the user |
248 | your pathnames to the locale (or other) encoding in effect in the user |
250 | environment, d) use Glib::filename_from_unicode on unicode filenames or e) |
249 | environment, d) use Glib::filename_from_unicode on unicode filenames or e) |
251 | use something else to ensure your scalar has the correct contents. |
250 | use something else to ensure your scalar has the correct contents. |
252 | |
251 | |
253 | This works, btw. independent of the internal UTF-8 bit, which IO::AIO |
252 | This works, btw. independent of the internal UTF-8 bit, which IO::AIO |
254 | handles correctly wether it is set or not. |
253 | handles correctly whether it is set or not. |
255 | |
254 | |
256 | =over 4 |
255 | =over 4 |
257 | |
256 | |
258 | =item $prev_pri = aioreq_pri [$pri] |
257 | =item $prev_pri = aioreq_pri [$pri] |
259 | |
258 | |
… | |
… | |
540 | memory. Status is the same as with aio_read. |
539 | memory. Status is the same as with aio_read. |
541 | |
540 | |
542 | =cut |
541 | =cut |
543 | |
542 | |
544 | sub aio_load($$;$) { |
543 | sub aio_load($$;$) { |
545 | aio_block { |
|
|
546 | my ($path, undef, $cb) = @_; |
544 | my ($path, undef, $cb) = @_; |
547 | my $data = \$_[1]; |
545 | my $data = \$_[1]; |
548 | |
546 | |
549 | my $pri = aioreq_pri; |
547 | my $pri = aioreq_pri; |
550 | 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); |
551 | |
554 | |
552 | aioreq_pri $pri; |
555 | aioreq_pri $pri; |
553 | add $grp aio_open $path, O_RDONLY, 0, sub { |
|
|
554 | my $fh = shift |
|
|
555 | or return $grp->result (-1); |
|
|
556 | |
|
|
557 | aioreq_pri $pri; |
|
|
558 | add $grp aio_read $fh, 0, (-s $fh), $$data, 0, sub { |
556 | add $grp aio_read $fh, 0, (-s $fh), $$data, 0, sub { |
559 | $grp->result ($_[0]); |
557 | $grp->result ($_[0]); |
560 | }; |
|
|
561 | }; |
558 | }; |
562 | |
|
|
563 | $grp |
|
|
564 | } |
559 | }; |
|
|
560 | |
|
|
561 | $grp |
565 | } |
562 | } |
566 | |
563 | |
567 | =item aio_copy $srcpath, $dstpath, $callback->($status) |
564 | =item aio_copy $srcpath, $dstpath, $callback->($status) |
568 | |
565 | |
569 | 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 |
570 | destination) from C<$srcpath> to C<$dstpath> and call the callback with |
567 | destination) from C<$srcpath> to C<$dstpath> and call the callback with |
571 | the C<0> (error) or C<-1> ok. |
568 | the C<0> (error) or C<-1> ok. |
572 | |
569 | |
573 | This is a composite request that it creates the destination file with |
570 | This is a composite request that creates the destination file with |
574 | mode 0200 and copies the contents of the source file into it using |
571 | mode 0200 and copies the contents of the source file into it using |
575 | C<aio_sendfile>, followed by restoring atime, mtime, access mode and |
572 | C<aio_sendfile>, followed by restoring atime, mtime, access mode and |
576 | uid/gid, in that order. |
573 | uid/gid, in that order. |
577 | |
574 | |
578 | If an error occurs, the partial destination file will be unlinked, if |
575 | If an error occurs, the partial destination file will be unlinked, if |
… | |
… | |
580 | errors are being ignored. |
577 | errors are being ignored. |
581 | |
578 | |
582 | =cut |
579 | =cut |
583 | |
580 | |
584 | sub aio_copy($$;$) { |
581 | sub aio_copy($$;$) { |
585 | aio_block { |
|
|
586 | my ($src, $dst, $cb) = @_; |
582 | my ($src, $dst, $cb) = @_; |
587 | |
583 | |
588 | my $pri = aioreq_pri; |
584 | my $pri = aioreq_pri; |
589 | my $grp = aio_group $cb; |
585 | my $grp = aio_group $cb; |
590 | |
586 | |
591 | aioreq_pri $pri; |
587 | aioreq_pri $pri; |
592 | add $grp aio_open $src, O_RDONLY, 0, sub { |
588 | add $grp aio_open $src, O_RDONLY, 0, sub { |
593 | if (my $src_fh = $_[0]) { |
589 | if (my $src_fh = $_[0]) { |
594 | my @stat = stat $src_fh; |
590 | my @stat = stat $src_fh; |
595 | |
591 | |
596 | aioreq_pri $pri; |
592 | aioreq_pri $pri; |
597 | 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 { |
598 | if (my $dst_fh = $_[0]) { |
594 | if (my $dst_fh = $_[0]) { |
599 | aioreq_pri $pri; |
595 | aioreq_pri $pri; |
600 | add $grp aio_sendfile $dst_fh, $src_fh, 0, $stat[7], sub { |
596 | add $grp aio_sendfile $dst_fh, $src_fh, 0, $stat[7], sub { |
601 | if ($_[0] == $stat[7]) { |
597 | if ($_[0] == $stat[7]) { |
602 | $grp->result (0); |
598 | $grp->result (0); |
603 | close $src_fh; |
599 | close $src_fh; |
604 | |
600 | |
605 | # those should not normally block. should. should. |
601 | # those should not normally block. should. should. |
606 | utime $stat[8], $stat[9], $dst; |
602 | utime $stat[8], $stat[9], $dst; |
607 | chmod $stat[2] & 07777, $dst_fh; |
603 | chmod $stat[2] & 07777, $dst_fh; |
608 | chown $stat[4], $stat[5], $dst_fh; |
604 | chown $stat[4], $stat[5], $dst_fh; |
609 | |
605 | |
610 | aioreq_pri $pri; |
606 | aioreq_pri $pri; |
611 | add $grp aio_close $dst_fh; |
607 | add $grp aio_close $dst_fh; |
612 | } else { |
608 | } else { |
613 | $grp->result (-1); |
609 | $grp->result (-1); |
614 | close $src_fh; |
610 | close $src_fh; |
615 | close $dst_fh; |
611 | close $dst_fh; |
616 | |
612 | |
617 | aioreq $pri; |
613 | aioreq $pri; |
618 | add $grp aio_unlink $dst; |
614 | add $grp aio_unlink $dst; |
619 | } |
|
|
620 | }; |
615 | } |
621 | } else { |
|
|
622 | $grp->result (-1); |
|
|
623 | } |
616 | }; |
|
|
617 | } else { |
|
|
618 | $grp->result (-1); |
624 | }, |
619 | } |
625 | |
|
|
626 | } else { |
|
|
627 | $grp->result (-1); |
|
|
628 | } |
620 | }, |
|
|
621 | |
|
|
622 | } else { |
|
|
623 | $grp->result (-1); |
629 | }; |
624 | } |
630 | |
|
|
631 | $grp |
|
|
632 | } |
625 | }; |
|
|
626 | |
|
|
627 | $grp |
633 | } |
628 | } |
634 | |
629 | |
635 | =item aio_move $srcpath, $dstpath, $callback->($status) |
630 | =item aio_move $srcpath, $dstpath, $callback->($status) |
636 | |
631 | |
637 | 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 |
… | |
… | |
643 | that is successful, unlinking the C<$srcpath>. |
638 | that is successful, unlinking the C<$srcpath>. |
644 | |
639 | |
645 | =cut |
640 | =cut |
646 | |
641 | |
647 | sub aio_move($$;$) { |
642 | sub aio_move($$;$) { |
648 | aio_block { |
|
|
649 | my ($src, $dst, $cb) = @_; |
643 | my ($src, $dst, $cb) = @_; |
650 | |
644 | |
651 | my $pri = aioreq_pri; |
645 | my $pri = aioreq_pri; |
652 | my $grp = aio_group $cb; |
646 | my $grp = aio_group $cb; |
653 | |
647 | |
654 | aioreq_pri $pri; |
648 | aioreq_pri $pri; |
655 | add $grp aio_rename $src, $dst, sub { |
649 | add $grp aio_rename $src, $dst, sub { |
656 | if ($_[0] && $! == EXDEV) { |
650 | if ($_[0] && $! == EXDEV) { |
657 | aioreq_pri $pri; |
651 | aioreq_pri $pri; |
658 | add $grp aio_copy $src, $dst, sub { |
652 | add $grp aio_copy $src, $dst, sub { |
659 | $grp->result ($_[0]); |
|
|
660 | |
|
|
661 | if (!$_[0]) { |
|
|
662 | aioreq_pri $pri; |
|
|
663 | add $grp aio_unlink $src; |
|
|
664 | } |
|
|
665 | }; |
|
|
666 | } else { |
|
|
667 | $grp->result ($_[0]); |
653 | $grp->result ($_[0]); |
|
|
654 | |
|
|
655 | if (!$_[0]) { |
|
|
656 | aioreq_pri $pri; |
|
|
657 | add $grp aio_unlink $src; |
|
|
658 | } |
668 | } |
659 | }; |
|
|
660 | } else { |
|
|
661 | $grp->result ($_[0]); |
669 | }; |
662 | } |
670 | |
|
|
671 | $grp |
|
|
672 | } |
663 | }; |
|
|
664 | |
|
|
665 | $grp |
673 | } |
666 | } |
674 | |
667 | |
675 | =item aio_scandir $path, $maxreq, $callback->($dirs, $nondirs) |
668 | =item aio_scandir $path, $maxreq, $callback->($dirs, $nondirs) |
676 | |
669 | |
677 | 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 |
… | |
… | |
725 | directory counting heuristic. |
718 | directory counting heuristic. |
726 | |
719 | |
727 | =cut |
720 | =cut |
728 | |
721 | |
729 | sub aio_scandir($$;$) { |
722 | sub aio_scandir($$;$) { |
730 | aio_block { |
|
|
731 | my ($path, $maxreq, $cb) = @_; |
723 | my ($path, $maxreq, $cb) = @_; |
732 | |
724 | |
733 | my $pri = aioreq_pri; |
725 | my $pri = aioreq_pri; |
734 | |
726 | |
735 | my $grp = aio_group $cb; |
727 | my $grp = aio_group $cb; |
736 | |
728 | |
737 | $maxreq = 4 if $maxreq <= 0; |
729 | $maxreq = 4 if $maxreq <= 0; |
738 | |
730 | |
739 | # 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 |
740 | aioreq_pri $pri; |
739 | aioreq_pri $pri; |
741 | add $grp aio_stat $path, sub { |
740 | add $grp aio_readdir $path, sub { |
|
|
741 | my $entries = shift |
742 | return $grp->result () if $_[0]; |
742 | or return $grp->result (); |
743 | my $now = time; |
|
|
744 | my $hash1 = join ":", (stat _)[0,1,3,7,9]; |
|
|
745 | |
743 | |
746 | # read the directory entries |
744 | # stat the dir another time |
747 | aioreq_pri $pri; |
745 | aioreq_pri $pri; |
748 | add $grp aio_readdir $path, sub { |
|
|
749 | my $entries = shift |
|
|
750 | or return $grp->result (); |
|
|
751 | |
|
|
752 | # stat the dir another time |
|
|
753 | aioreq_pri $pri; |
|
|
754 | add $grp aio_stat $path, sub { |
746 | add $grp aio_stat $path, sub { |
755 | my $hash2 = join ":", (stat _)[0,1,3,7,9]; |
747 | my $hash2 = join ":", (stat _)[0,1,3,7,9]; |
756 | |
748 | |
757 | my $ndirs; |
749 | my $ndirs; |
758 | |
750 | |
759 | # take the slow route if anything looks fishy |
751 | # take the slow route if anything looks fishy |
760 | if ($hash1 ne $hash2 or (stat _)[9] == $now) { |
752 | if ($hash1 ne $hash2 or (stat _)[9] == $now) { |
761 | $ndirs = -1; |
753 | $ndirs = -1; |
762 | } else { |
754 | } else { |
763 | # if nlink == 2, we are finished |
755 | # if nlink == 2, we are finished |
764 | # on non-posix-fs's, we rely on nlink < 2 |
756 | # on non-posix-fs's, we rely on nlink < 2 |
765 | $ndirs = (stat _)[3] - 2 |
757 | $ndirs = (stat _)[3] - 2 |
766 | or return $grp->result ([], $entries); |
758 | or return $grp->result ([], $entries); |
767 | } |
759 | } |
768 | |
760 | |
769 | # sort into likely dirs and likely nondirs |
761 | # sort into likely dirs and likely nondirs |
770 | # dirs == files without ".", short entries first |
762 | # dirs == files without ".", short entries first |
771 | $entries = [map $_->[0], |
763 | $entries = [map $_->[0], |
772 | sort { $b->[1] cmp $a->[1] } |
764 | sort { $b->[1] cmp $a->[1] } |
773 | map [$_, sprintf "%s%04d", (/.\./ ? "1" : "0"), length], |
765 | map [$_, sprintf "%s%04d", (/.\./ ? "1" : "0"), length], |
774 | @$entries]; |
766 | @$entries]; |
775 | |
767 | |
776 | my (@dirs, @nondirs); |
768 | my (@dirs, @nondirs); |
777 | |
769 | |
778 | my $statgrp = add $grp aio_group sub { |
770 | my $statgrp = add $grp aio_group sub { |
779 | $grp->result (\@dirs, \@nondirs); |
771 | $grp->result (\@dirs, \@nondirs); |
780 | }; |
772 | }; |
781 | |
773 | |
782 | limit $statgrp $maxreq; |
774 | limit $statgrp $maxreq; |
783 | feed $statgrp sub { |
775 | feed $statgrp sub { |
784 | return unless @$entries; |
776 | return unless @$entries; |
785 | my $entry = pop @$entries; |
777 | my $entry = pop @$entries; |
786 | |
778 | |
787 | aioreq_pri $pri; |
779 | aioreq_pri $pri; |
788 | add $statgrp aio_stat "$path/$entry/.", sub { |
780 | add $statgrp aio_stat "$path/$entry/.", sub { |
789 | if ($_[0] < 0) { |
781 | if ($_[0] < 0) { |
790 | push @nondirs, $entry; |
782 | push @nondirs, $entry; |
791 | } else { |
783 | } else { |
792 | # need to check for real directory |
784 | # need to check for real directory |
793 | aioreq_pri $pri; |
785 | aioreq_pri $pri; |
794 | add $statgrp aio_lstat "$path/$entry", sub { |
786 | add $statgrp aio_lstat "$path/$entry", sub { |
795 | if (-d _) { |
787 | if (-d _) { |
796 | push @dirs, $entry; |
788 | push @dirs, $entry; |
797 | |
789 | |
798 | unless (--$ndirs) { |
790 | unless (--$ndirs) { |
799 | push @nondirs, @$entries; |
791 | push @nondirs, @$entries; |
800 | feed $statgrp; |
792 | feed $statgrp; |
801 | } |
|
|
802 | } else { |
|
|
803 | push @nondirs, $entry; |
|
|
804 | } |
793 | } |
|
|
794 | } else { |
|
|
795 | push @nondirs, $entry; |
805 | } |
796 | } |
806 | } |
797 | } |
807 | }; |
798 | } |
808 | }; |
799 | }; |
809 | }; |
800 | }; |
810 | }; |
801 | }; |
811 | }; |
802 | }; |
812 | |
|
|
813 | $grp |
|
|
814 | } |
803 | }; |
|
|
804 | |
|
|
805 | $grp |
815 | } |
806 | } |
816 | |
807 | |
817 | =item aio_rmtree $path, $callback->($status) |
808 | =item aio_rmtree $path, $callback->($status) |
818 | |
809 | |
819 | Delete a directory tree starting (and including) C<$path>, return the |
810 | Delete a directory tree starting (and including) C<$path>, return the |
… | |
… | |
823 | |
814 | |
824 | =cut |
815 | =cut |
825 | |
816 | |
826 | sub aio_rmtree; |
817 | sub aio_rmtree; |
827 | sub aio_rmtree($;$) { |
818 | sub aio_rmtree($;$) { |
828 | aio_block { |
|
|
829 | my ($path, $cb) = @_; |
819 | my ($path, $cb) = @_; |
830 | |
820 | |
831 | my $pri = aioreq_pri; |
821 | my $pri = aioreq_pri; |
832 | my $grp = aio_group $cb; |
822 | my $grp = aio_group $cb; |
833 | |
823 | |
834 | aioreq_pri $pri; |
824 | aioreq_pri $pri; |
835 | add $grp aio_scandir $path, 0, sub { |
825 | add $grp aio_scandir $path, 0, sub { |
836 | my ($dirs, $nondirs) = @_; |
826 | my ($dirs, $nondirs) = @_; |
837 | |
827 | |
838 | my $dirgrp = aio_group sub { |
828 | my $dirgrp = aio_group sub { |
839 | add $grp aio_rmdir $path, sub { |
829 | add $grp aio_rmdir $path, sub { |
840 | $grp->result ($_[0]); |
830 | $grp->result ($_[0]); |
841 | }; |
|
|
842 | }; |
831 | }; |
843 | |
|
|
844 | (aioreq_pri $pri), add $dirgrp aio_rmtree "$path/$_" for @$dirs; |
|
|
845 | (aioreq_pri $pri), add $dirgrp aio_unlink "$path/$_" for @$nondirs; |
|
|
846 | |
|
|
847 | add $grp $dirgrp; |
|
|
848 | }; |
832 | }; |
849 | |
833 | |
850 | $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; |
851 | } |
838 | }; |
|
|
839 | |
|
|
840 | $grp |
852 | } |
841 | } |
853 | |
842 | |
854 | =item aio_sync $callback->($status) |
843 | =item aio_sync $callback->($status) |
855 | |
844 | |
856 | Asynchronously call sync and call the callback when finished. |
845 | Asynchronously call sync and call the callback when finished. |
… | |
… | |
869 | detected, it will be emulated by calling C<fsync> instead. |
858 | detected, it will be emulated by calling C<fsync> instead. |
870 | |
859 | |
871 | =item aio_pathsync $path, $callback->($status) |
860 | =item aio_pathsync $path, $callback->($status) |
872 | |
861 | |
873 | This request tries to open, fsync and close the given path. This is a |
862 | This request tries to open, fsync and close the given path. This is a |
874 | composite request intended tosync directories after directory operations |
863 | composite request intended to sync directories after directory operations |
875 | (E.g. rename). This might not work on all operating systems or have any |
864 | (E.g. rename). This might not work on all operating systems or have any |
876 | specific effect, but usually it makes sure that directory changes get |
865 | specific effect, but usually it makes sure that directory changes get |
877 | written to disc. It works for anything that can be opened for read-only, |
866 | written to disc. It works for anything that can be opened for read-only, |
878 | not just directories. |
867 | not just directories. |
879 | |
868 | |
880 | Passes C<0> when everything went ok, and C<-1> on error. |
869 | Passes C<0> when everything went ok, and C<-1> on error. |
881 | |
870 | |
882 | =cut |
871 | =cut |
883 | |
872 | |
884 | sub aio_pathsync($;$) { |
873 | sub aio_pathsync($;$) { |
885 | aio_block { |
|
|
886 | my ($path, $cb) = @_; |
874 | my ($path, $cb) = @_; |
887 | |
875 | |
888 | my $pri = aioreq_pri; |
876 | my $pri = aioreq_pri; |
889 | my $grp = aio_group $cb; |
877 | my $grp = aio_group $cb; |
890 | |
878 | |
891 | aioreq_pri $pri; |
879 | aioreq_pri $pri; |
892 | add $grp aio_open $path, O_RDONLY, 0, sub { |
880 | add $grp aio_open $path, O_RDONLY, 0, sub { |
893 | my ($fh) = @_; |
881 | my ($fh) = @_; |
894 | if ($fh) { |
882 | if ($fh) { |
|
|
883 | aioreq_pri $pri; |
|
|
884 | add $grp aio_fsync $fh, sub { |
|
|
885 | $grp->result ($_[0]); |
|
|
886 | |
895 | aioreq_pri $pri; |
887 | aioreq_pri $pri; |
896 | add $grp aio_fsync $fh, sub { |
|
|
897 | $grp->result ($_[0]); |
|
|
898 | |
|
|
899 | aioreq_pri $pri; |
|
|
900 | add $grp aio_close $fh; |
888 | add $grp aio_close $fh; |
901 | }; |
|
|
902 | } else { |
|
|
903 | $grp->result (-1); |
|
|
904 | } |
889 | }; |
|
|
890 | } else { |
|
|
891 | $grp->result (-1); |
905 | }; |
892 | } |
906 | |
|
|
907 | $grp |
|
|
908 | } |
893 | }; |
|
|
894 | |
|
|
895 | $grp |
909 | } |
896 | } |
910 | |
897 | |
911 | =item aio_group $callback->(...) |
898 | =item aio_group $callback->(...) |
912 | |
899 | |
913 | 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 |
… | |
… | |
1026 | Their lifetime, simplified, looks like this: when they are empty, they |
1013 | Their lifetime, simplified, looks like this: when they are empty, they |
1027 | will finish very quickly. If they contain only requests that are in the |
1014 | will finish very quickly. If they contain only requests that are in the |
1028 | C<done> state, they will also finish. Otherwise they will continue to |
1015 | C<done> state, they will also finish. Otherwise they will continue to |
1029 | exist. |
1016 | exist. |
1030 | |
1017 | |
1031 | That means after creating a group you have some time to add requests. And |
1018 | That means after creating a group you have some time to add requests |
1032 | in the callbacks of those requests, you can add further requests to the |
1019 | (precisely before the callback has been invoked, which is only done within |
1033 | group. And only when all those requests have finished will the the group |
1020 | the C<poll_cb>). And in the callbacks of those requests, you can add |
1034 | itself finish. |
1021 | further requests to the group. And only when all those requests have |
|
|
1022 | finished will the the group itself finish. |
1035 | |
1023 | |
1036 | =over 4 |
1024 | =over 4 |
1037 | |
1025 | |
1038 | =item add $grp ... |
1026 | =item add $grp ... |
1039 | |
1027 | |
… | |
… | |
1130 | See C<poll_cb> for an example. |
1118 | See C<poll_cb> for an example. |
1131 | |
1119 | |
1132 | =item IO::AIO::poll_cb |
1120 | =item IO::AIO::poll_cb |
1133 | |
1121 | |
1134 | Process some outstanding events on the result pipe. You have to call this |
1122 | Process some outstanding events on the result pipe. You have to call this |
1135 | regularly. Returns the number of events processed. Returns immediately |
1123 | regularly. Returns C<0> if all events could be processed, or C<-1> if it |
|
|
1124 | returned earlier for whatever reason. Returns immediately when no events |
1136 | when no events are outstanding. The amount of events processed depends on |
1125 | are outstanding. The amount of events processed depends on the settings of |
1137 | the settings of C<IO::AIO::max_poll_req> and C<IO::AIO::max_poll_time>. |
1126 | C<IO::AIO::max_poll_req> and C<IO::AIO::max_poll_time>. |
1138 | |
1127 | |
1139 | If not all requests were processed for whatever reason, the filehandle |
1128 | If not all requests were processed for whatever reason, the filehandle |
1140 | will still be ready when C<poll_cb> returns. |
1129 | will still be ready when C<poll_cb> returns, so normally you don't have to |
|
|
1130 | do anything special to have it called later. |
1141 | |
1131 | |
1142 | Example: Install an Event watcher that automatically calls |
1132 | Example: Install an Event watcher that automatically calls |
1143 | IO::AIO::poll_cb with high priority: |
1133 | IO::AIO::poll_cb with high priority: |
1144 | |
1134 | |
1145 | Event->io (fd => IO::AIO::poll_fileno, |
1135 | Event->io (fd => IO::AIO::poll_fileno, |
… | |
… | |
1259 | |
1249 | |
1260 | The default is probably ok in most situations, especially if thread |
1250 | The default is probably ok in most situations, especially if thread |
1261 | creation is fast. If thread creation is very slow on your system you might |
1251 | creation is fast. If thread creation is very slow on your system you might |
1262 | want to use larger values. |
1252 | want to use larger values. |
1263 | |
1253 | |
1264 | =item $oldmaxreqs = IO::AIO::max_outstanding $maxreqs |
1254 | =item IO::AIO::max_outstanding $maxreqs |
1265 | |
1255 | |
1266 | This is a very bad function to use in interactive programs because it |
1256 | This is a very bad function to use in interactive programs because it |
1267 | blocks, and a bad way to reduce concurrency because it is inexact: Better |
1257 | blocks, and a bad way to reduce concurrency because it is inexact: Better |
1268 | use an C<aio_group> together with a feed callback. |
1258 | use an C<aio_group> together with a feed callback. |
1269 | |
1259 | |
… | |
… | |
1274 | |
1264 | |
1275 | The default value is very large, so there is no practical limit on the |
1265 | The default value is very large, so there is no practical limit on the |
1276 | number of outstanding requests. |
1266 | number of outstanding requests. |
1277 | |
1267 | |
1278 | You can still queue as many requests as you want. Therefore, |
1268 | You can still queue as many requests as you want. Therefore, |
1279 | C<max_oustsanding> is mainly useful in simple scripts (with low values) or |
1269 | C<max_outstanding> is mainly useful in simple scripts (with low values) or |
1280 | as a stop gap to shield against fatal memory overflow (with large values). |
1270 | as a stop gap to shield against fatal memory overflow (with large values). |
1281 | |
1271 | |
1282 | =back |
1272 | =back |
1283 | |
1273 | |
1284 | =head3 STATISTICAL INFORMATION |
1274 | =head3 STATISTICAL INFORMATION |
… | |
… | |
1354 | |
1344 | |
1355 | Known bugs will be fixed in the next release. |
1345 | Known bugs will be fixed in the next release. |
1356 | |
1346 | |
1357 | =head1 SEE ALSO |
1347 | =head1 SEE ALSO |
1358 | |
1348 | |
1359 | L<Coro::AIO>. |
1349 | L<AnyEvent::AIO> for easy integration into event loops, L<Coro::AIO> for a |
|
|
1350 | more natural syntax. |
1360 | |
1351 | |
1361 | =head1 AUTHOR |
1352 | =head1 AUTHOR |
1362 | |
1353 | |
1363 | Marc Lehmann <schmorp@schmorp.de> |
1354 | Marc Lehmann <schmorp@schmorp.de> |
1364 | http://home.schmorp.de/ |
1355 | http://home.schmorp.de/ |