… | |
… | |
204 | aio_fdatasync aio_pathsync aio_readahead |
204 | aio_fdatasync aio_pathsync aio_readahead |
205 | aio_rename aio_link aio_move aio_copy aio_group |
205 | aio_rename aio_link aio_move aio_copy aio_group |
206 | aio_nop aio_mknod aio_load aio_rmtree aio_mkdir aio_chown |
206 | aio_nop aio_mknod aio_load aio_rmtree aio_mkdir aio_chown |
207 | aio_chmod aio_utime aio_truncate); |
207 | aio_chmod aio_utime aio_truncate); |
208 | |
208 | |
209 | our @EXPORT = (@AIO_REQ, qw(aioreq_pri aioreq_nice aio_block)); |
209 | our @EXPORT = (@AIO_REQ, qw(aioreq_pri aioreq_nice)); |
210 | our @EXPORT_OK = qw(poll_fileno poll_cb poll_wait flush |
210 | our @EXPORT_OK = qw(poll_fileno poll_cb poll_wait flush |
211 | min_parallel max_parallel max_idle |
211 | min_parallel max_parallel max_idle |
212 | nreqs nready npending nthreads |
212 | nreqs nready npending nthreads |
213 | max_poll_time max_poll_reqs); |
213 | max_poll_time max_poll_reqs); |
214 | |
214 | |
… | |
… | |
540 | memory. Status is the same as with aio_read. |
540 | memory. Status is the same as with aio_read. |
541 | |
541 | |
542 | =cut |
542 | =cut |
543 | |
543 | |
544 | sub aio_load($$;$) { |
544 | sub aio_load($$;$) { |
545 | aio_block { |
|
|
546 | my ($path, undef, $cb) = @_; |
545 | my ($path, undef, $cb) = @_; |
547 | my $data = \$_[1]; |
546 | my $data = \$_[1]; |
548 | |
547 | |
549 | my $pri = aioreq_pri; |
548 | my $pri = aioreq_pri; |
550 | my $grp = aio_group $cb; |
549 | my $grp = aio_group $cb; |
|
|
550 | |
|
|
551 | aioreq_pri $pri; |
|
|
552 | add $grp aio_open $path, O_RDONLY, 0, sub { |
|
|
553 | my $fh = shift |
|
|
554 | or return $grp->result (-1); |
551 | |
555 | |
552 | aioreq_pri $pri; |
556 | 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), $$data, 0, sub { |
557 | add $grp aio_read $fh, 0, (-s $fh), $$data, 0, sub { |
559 | $grp->result ($_[0]); |
558 | $grp->result ($_[0]); |
560 | }; |
|
|
561 | }; |
559 | }; |
562 | |
|
|
563 | $grp |
|
|
564 | } |
560 | }; |
|
|
561 | |
|
|
562 | $grp |
565 | } |
563 | } |
566 | |
564 | |
567 | =item aio_copy $srcpath, $dstpath, $callback->($status) |
565 | =item aio_copy $srcpath, $dstpath, $callback->($status) |
568 | |
566 | |
569 | Try to copy the I<file> (directories not supported as either source or |
567 | Try to copy the I<file> (directories not supported as either source or |
… | |
… | |
580 | errors are being ignored. |
578 | errors are being ignored. |
581 | |
579 | |
582 | =cut |
580 | =cut |
583 | |
581 | |
584 | sub aio_copy($$;$) { |
582 | sub aio_copy($$;$) { |
585 | aio_block { |
|
|
586 | my ($src, $dst, $cb) = @_; |
583 | my ($src, $dst, $cb) = @_; |
587 | |
584 | |
588 | my $pri = aioreq_pri; |
585 | my $pri = aioreq_pri; |
589 | my $grp = aio_group $cb; |
586 | my $grp = aio_group $cb; |
590 | |
587 | |
591 | aioreq_pri $pri; |
588 | aioreq_pri $pri; |
592 | add $grp aio_open $src, O_RDONLY, 0, sub { |
589 | add $grp aio_open $src, O_RDONLY, 0, sub { |
593 | if (my $src_fh = $_[0]) { |
590 | if (my $src_fh = $_[0]) { |
594 | my @stat = stat $src_fh; |
591 | my @stat = stat $src_fh; |
595 | |
592 | |
596 | aioreq_pri $pri; |
593 | aioreq_pri $pri; |
597 | add $grp aio_open $dst, O_CREAT | O_WRONLY | O_TRUNC, 0200, sub { |
594 | add $grp aio_open $dst, O_CREAT | O_WRONLY | O_TRUNC, 0200, sub { |
598 | if (my $dst_fh = $_[0]) { |
595 | if (my $dst_fh = $_[0]) { |
599 | aioreq_pri $pri; |
596 | aioreq_pri $pri; |
600 | add $grp aio_sendfile $dst_fh, $src_fh, 0, $stat[7], sub { |
597 | add $grp aio_sendfile $dst_fh, $src_fh, 0, $stat[7], sub { |
601 | if ($_[0] == $stat[7]) { |
598 | if ($_[0] == $stat[7]) { |
602 | $grp->result (0); |
599 | $grp->result (0); |
603 | close $src_fh; |
600 | close $src_fh; |
604 | |
601 | |
605 | # those should not normally block. should. should. |
602 | # those should not normally block. should. should. |
606 | utime $stat[8], $stat[9], $dst; |
603 | utime $stat[8], $stat[9], $dst; |
607 | chmod $stat[2] & 07777, $dst_fh; |
604 | chmod $stat[2] & 07777, $dst_fh; |
608 | chown $stat[4], $stat[5], $dst_fh; |
605 | chown $stat[4], $stat[5], $dst_fh; |
609 | |
606 | |
610 | aioreq_pri $pri; |
607 | aioreq_pri $pri; |
611 | add $grp aio_close $dst_fh; |
608 | add $grp aio_close $dst_fh; |
612 | } else { |
609 | } else { |
613 | $grp->result (-1); |
610 | $grp->result (-1); |
614 | close $src_fh; |
611 | close $src_fh; |
615 | close $dst_fh; |
612 | close $dst_fh; |
616 | |
613 | |
617 | aioreq $pri; |
614 | aioreq $pri; |
618 | add $grp aio_unlink $dst; |
615 | add $grp aio_unlink $dst; |
619 | } |
|
|
620 | }; |
616 | } |
621 | } else { |
|
|
622 | $grp->result (-1); |
|
|
623 | } |
617 | }; |
|
|
618 | } else { |
|
|
619 | $grp->result (-1); |
624 | }, |
620 | } |
625 | |
|
|
626 | } else { |
|
|
627 | $grp->result (-1); |
|
|
628 | } |
621 | }, |
|
|
622 | |
|
|
623 | } else { |
|
|
624 | $grp->result (-1); |
629 | }; |
625 | } |
630 | |
|
|
631 | $grp |
|
|
632 | } |
626 | }; |
|
|
627 | |
|
|
628 | $grp |
633 | } |
629 | } |
634 | |
630 | |
635 | =item aio_move $srcpath, $dstpath, $callback->($status) |
631 | =item aio_move $srcpath, $dstpath, $callback->($status) |
636 | |
632 | |
637 | Try to move the I<file> (directories not supported as either source or |
633 | Try to move the I<file> (directories not supported as either source or |
… | |
… | |
643 | that is successful, unlinking the C<$srcpath>. |
639 | that is successful, unlinking the C<$srcpath>. |
644 | |
640 | |
645 | =cut |
641 | =cut |
646 | |
642 | |
647 | sub aio_move($$;$) { |
643 | sub aio_move($$;$) { |
648 | aio_block { |
|
|
649 | my ($src, $dst, $cb) = @_; |
644 | my ($src, $dst, $cb) = @_; |
650 | |
645 | |
651 | my $pri = aioreq_pri; |
646 | my $pri = aioreq_pri; |
652 | my $grp = aio_group $cb; |
647 | my $grp = aio_group $cb; |
653 | |
648 | |
654 | aioreq_pri $pri; |
649 | aioreq_pri $pri; |
655 | add $grp aio_rename $src, $dst, sub { |
650 | add $grp aio_rename $src, $dst, sub { |
656 | if ($_[0] && $! == EXDEV) { |
651 | if ($_[0] && $! == EXDEV) { |
657 | aioreq_pri $pri; |
652 | aioreq_pri $pri; |
658 | add $grp aio_copy $src, $dst, sub { |
653 | 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]); |
654 | $grp->result ($_[0]); |
|
|
655 | |
|
|
656 | if (!$_[0]) { |
|
|
657 | aioreq_pri $pri; |
|
|
658 | add $grp aio_unlink $src; |
|
|
659 | } |
668 | } |
660 | }; |
|
|
661 | } else { |
|
|
662 | $grp->result ($_[0]); |
669 | }; |
663 | } |
670 | |
|
|
671 | $grp |
|
|
672 | } |
664 | }; |
|
|
665 | |
|
|
666 | $grp |
673 | } |
667 | } |
674 | |
668 | |
675 | =item aio_scandir $path, $maxreq, $callback->($dirs, $nondirs) |
669 | =item aio_scandir $path, $maxreq, $callback->($dirs, $nondirs) |
676 | |
670 | |
677 | Scans a directory (similar to C<aio_readdir>) but additionally tries to |
671 | Scans a directory (similar to C<aio_readdir>) but additionally tries to |
… | |
… | |
725 | directory counting heuristic. |
719 | directory counting heuristic. |
726 | |
720 | |
727 | =cut |
721 | =cut |
728 | |
722 | |
729 | sub aio_scandir($$;$) { |
723 | sub aio_scandir($$;$) { |
730 | aio_block { |
|
|
731 | my ($path, $maxreq, $cb) = @_; |
724 | my ($path, $maxreq, $cb) = @_; |
732 | |
725 | |
733 | my $pri = aioreq_pri; |
726 | my $pri = aioreq_pri; |
734 | |
727 | |
735 | my $grp = aio_group $cb; |
728 | my $grp = aio_group $cb; |
736 | |
729 | |
737 | $maxreq = 4 if $maxreq <= 0; |
730 | $maxreq = 4 if $maxreq <= 0; |
738 | |
731 | |
739 | # stat once |
732 | # stat once |
|
|
733 | aioreq_pri $pri; |
|
|
734 | add $grp aio_stat $path, sub { |
|
|
735 | return $grp->result () if $_[0]; |
|
|
736 | my $now = time; |
|
|
737 | my $hash1 = join ":", (stat _)[0,1,3,7,9]; |
|
|
738 | |
|
|
739 | # read the directory entries |
740 | aioreq_pri $pri; |
740 | aioreq_pri $pri; |
741 | add $grp aio_stat $path, sub { |
741 | add $grp aio_readdir $path, sub { |
|
|
742 | my $entries = shift |
742 | return $grp->result () if $_[0]; |
743 | or return $grp->result (); |
743 | my $now = time; |
|
|
744 | my $hash1 = join ":", (stat _)[0,1,3,7,9]; |
|
|
745 | |
744 | |
746 | # read the directory entries |
745 | # stat the dir another time |
747 | aioreq_pri $pri; |
746 | 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 { |
747 | add $grp aio_stat $path, sub { |
755 | my $hash2 = join ":", (stat _)[0,1,3,7,9]; |
748 | my $hash2 = join ":", (stat _)[0,1,3,7,9]; |
756 | |
749 | |
757 | my $ndirs; |
750 | my $ndirs; |
758 | |
751 | |
759 | # take the slow route if anything looks fishy |
752 | # take the slow route if anything looks fishy |
760 | if ($hash1 ne $hash2 or (stat _)[9] == $now) { |
753 | if ($hash1 ne $hash2 or (stat _)[9] == $now) { |
761 | $ndirs = -1; |
754 | $ndirs = -1; |
762 | } else { |
755 | } else { |
763 | # if nlink == 2, we are finished |
756 | # if nlink == 2, we are finished |
764 | # on non-posix-fs's, we rely on nlink < 2 |
757 | # on non-posix-fs's, we rely on nlink < 2 |
765 | $ndirs = (stat _)[3] - 2 |
758 | $ndirs = (stat _)[3] - 2 |
766 | or return $grp->result ([], $entries); |
759 | or return $grp->result ([], $entries); |
767 | } |
760 | } |
768 | |
761 | |
769 | # sort into likely dirs and likely nondirs |
762 | # sort into likely dirs and likely nondirs |
770 | # dirs == files without ".", short entries first |
763 | # dirs == files without ".", short entries first |
771 | $entries = [map $_->[0], |
764 | $entries = [map $_->[0], |
772 | sort { $b->[1] cmp $a->[1] } |
765 | sort { $b->[1] cmp $a->[1] } |
773 | map [$_, sprintf "%s%04d", (/.\./ ? "1" : "0"), length], |
766 | map [$_, sprintf "%s%04d", (/.\./ ? "1" : "0"), length], |
774 | @$entries]; |
767 | @$entries]; |
775 | |
768 | |
776 | my (@dirs, @nondirs); |
769 | my (@dirs, @nondirs); |
777 | |
770 | |
778 | my $statgrp = add $grp aio_group sub { |
771 | my $statgrp = add $grp aio_group sub { |
779 | $grp->result (\@dirs, \@nondirs); |
772 | $grp->result (\@dirs, \@nondirs); |
780 | }; |
773 | }; |
781 | |
774 | |
782 | limit $statgrp $maxreq; |
775 | limit $statgrp $maxreq; |
783 | feed $statgrp sub { |
776 | feed $statgrp sub { |
784 | return unless @$entries; |
777 | return unless @$entries; |
785 | my $entry = pop @$entries; |
778 | my $entry = pop @$entries; |
786 | |
779 | |
787 | aioreq_pri $pri; |
780 | aioreq_pri $pri; |
788 | add $statgrp aio_stat "$path/$entry/.", sub { |
781 | add $statgrp aio_stat "$path/$entry/.", sub { |
789 | if ($_[0] < 0) { |
782 | if ($_[0] < 0) { |
790 | push @nondirs, $entry; |
783 | push @nondirs, $entry; |
791 | } else { |
784 | } else { |
792 | # need to check for real directory |
785 | # need to check for real directory |
793 | aioreq_pri $pri; |
786 | aioreq_pri $pri; |
794 | add $statgrp aio_lstat "$path/$entry", sub { |
787 | add $statgrp aio_lstat "$path/$entry", sub { |
795 | if (-d _) { |
788 | if (-d _) { |
796 | push @dirs, $entry; |
789 | push @dirs, $entry; |
797 | |
790 | |
798 | unless (--$ndirs) { |
791 | unless (--$ndirs) { |
799 | push @nondirs, @$entries; |
792 | push @nondirs, @$entries; |
800 | feed $statgrp; |
793 | feed $statgrp; |
801 | } |
|
|
802 | } else { |
|
|
803 | push @nondirs, $entry; |
|
|
804 | } |
794 | } |
|
|
795 | } else { |
|
|
796 | push @nondirs, $entry; |
805 | } |
797 | } |
806 | } |
798 | } |
807 | }; |
799 | } |
808 | }; |
800 | }; |
809 | }; |
801 | }; |
810 | }; |
802 | }; |
811 | }; |
803 | }; |
812 | |
|
|
813 | $grp |
|
|
814 | } |
804 | }; |
|
|
805 | |
|
|
806 | $grp |
815 | } |
807 | } |
816 | |
808 | |
817 | =item aio_rmtree $path, $callback->($status) |
809 | =item aio_rmtree $path, $callback->($status) |
818 | |
810 | |
819 | Delete a directory tree starting (and including) C<$path>, return the |
811 | Delete a directory tree starting (and including) C<$path>, return the |
… | |
… | |
823 | |
815 | |
824 | =cut |
816 | =cut |
825 | |
817 | |
826 | sub aio_rmtree; |
818 | sub aio_rmtree; |
827 | sub aio_rmtree($;$) { |
819 | sub aio_rmtree($;$) { |
828 | aio_block { |
|
|
829 | my ($path, $cb) = @_; |
820 | my ($path, $cb) = @_; |
830 | |
821 | |
831 | my $pri = aioreq_pri; |
822 | my $pri = aioreq_pri; |
832 | my $grp = aio_group $cb; |
823 | my $grp = aio_group $cb; |
833 | |
824 | |
834 | aioreq_pri $pri; |
825 | aioreq_pri $pri; |
835 | add $grp aio_scandir $path, 0, sub { |
826 | add $grp aio_scandir $path, 0, sub { |
836 | my ($dirs, $nondirs) = @_; |
827 | my ($dirs, $nondirs) = @_; |
837 | |
828 | |
838 | my $dirgrp = aio_group sub { |
829 | my $dirgrp = aio_group sub { |
839 | add $grp aio_rmdir $path, sub { |
830 | add $grp aio_rmdir $path, sub { |
840 | $grp->result ($_[0]); |
831 | $grp->result ($_[0]); |
841 | }; |
|
|
842 | }; |
832 | }; |
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 | }; |
833 | }; |
849 | |
834 | |
850 | $grp |
835 | (aioreq_pri $pri), add $dirgrp aio_rmtree "$path/$_" for @$dirs; |
|
|
836 | (aioreq_pri $pri), add $dirgrp aio_unlink "$path/$_" for @$nondirs; |
|
|
837 | |
|
|
838 | add $grp $dirgrp; |
851 | } |
839 | }; |
|
|
840 | |
|
|
841 | $grp |
852 | } |
842 | } |
853 | |
843 | |
854 | =item aio_sync $callback->($status) |
844 | =item aio_sync $callback->($status) |
855 | |
845 | |
856 | Asynchronously call sync and call the callback when finished. |
846 | Asynchronously call sync and call the callback when finished. |
… | |
… | |
880 | Passes C<0> when everything went ok, and C<-1> on error. |
870 | Passes C<0> when everything went ok, and C<-1> on error. |
881 | |
871 | |
882 | =cut |
872 | =cut |
883 | |
873 | |
884 | sub aio_pathsync($;$) { |
874 | sub aio_pathsync($;$) { |
885 | aio_block { |
|
|
886 | my ($path, $cb) = @_; |
875 | my ($path, $cb) = @_; |
887 | |
876 | |
888 | my $pri = aioreq_pri; |
877 | my $pri = aioreq_pri; |
889 | my $grp = aio_group $cb; |
878 | my $grp = aio_group $cb; |
890 | |
879 | |
891 | aioreq_pri $pri; |
880 | aioreq_pri $pri; |
892 | add $grp aio_open $path, O_RDONLY, 0, sub { |
881 | add $grp aio_open $path, O_RDONLY, 0, sub { |
893 | my ($fh) = @_; |
882 | my ($fh) = @_; |
894 | if ($fh) { |
883 | if ($fh) { |
|
|
884 | aioreq_pri $pri; |
|
|
885 | add $grp aio_fsync $fh, sub { |
|
|
886 | $grp->result ($_[0]); |
|
|
887 | |
895 | aioreq_pri $pri; |
888 | 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; |
889 | add $grp aio_close $fh; |
901 | }; |
|
|
902 | } else { |
|
|
903 | $grp->result (-1); |
|
|
904 | } |
890 | }; |
|
|
891 | } else { |
|
|
892 | $grp->result (-1); |
905 | }; |
893 | } |
906 | |
|
|
907 | $grp |
|
|
908 | } |
894 | }; |
|
|
895 | |
|
|
896 | $grp |
909 | } |
897 | } |
910 | |
898 | |
911 | =item aio_group $callback->(...) |
899 | =item aio_group $callback->(...) |
912 | |
900 | |
913 | This is a very special aio request: Instead of doing something, it is a |
901 | This is a very special aio request: Instead of doing something, it is a |
… | |
… | |
1259 | |
1247 | |
1260 | The default is probably ok in most situations, especially if thread |
1248 | 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 |
1249 | creation is fast. If thread creation is very slow on your system you might |
1262 | want to use larger values. |
1250 | want to use larger values. |
1263 | |
1251 | |
1264 | =item $oldmaxreqs = IO::AIO::max_outstanding $maxreqs |
1252 | =item IO::AIO::max_outstanding $maxreqs |
1265 | |
1253 | |
1266 | This is a very bad function to use in interactive programs because it |
1254 | 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 |
1255 | blocks, and a bad way to reduce concurrency because it is inexact: Better |
1268 | use an C<aio_group> together with a feed callback. |
1256 | use an C<aio_group> together with a feed callback. |
1269 | |
1257 | |
… | |
… | |
1274 | |
1262 | |
1275 | The default value is very large, so there is no practical limit on the |
1263 | The default value is very large, so there is no practical limit on the |
1276 | number of outstanding requests. |
1264 | number of outstanding requests. |
1277 | |
1265 | |
1278 | You can still queue as many requests as you want. Therefore, |
1266 | 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 |
1267 | 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). |
1268 | as a stop gap to shield against fatal memory overflow (with large values). |
1281 | |
1269 | |
1282 | =back |
1270 | =back |
1283 | |
1271 | |
1284 | =head3 STATISTICAL INFORMATION |
1272 | =head3 STATISTICAL INFORMATION |