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5 | =head1 SYNOPSIS |
5 | =head1 SYNOPSIS |
6 | |
6 | |
7 | use IO::AIO; |
7 | use IO::AIO; |
8 | |
8 | |
9 | aio_open "/etc/passwd", O_RDONLY, 0, sub { |
9 | aio_open "/etc/passwd", O_RDONLY, 0, sub { |
10 | my ($fh) = @_; |
10 | my $fh = shift |
|
|
11 | or die "/etc/passwd: $!"; |
11 | ... |
12 | ... |
12 | }; |
13 | }; |
13 | |
14 | |
14 | aio_unlink "/tmp/file", sub { }; |
15 | aio_unlink "/tmp/file", sub { }; |
15 | |
16 | |
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99 | poll => 'r', |
100 | poll => 'r', |
100 | cb => \&IO::AIO::poll_cb); |
101 | cb => \&IO::AIO::poll_cb); |
101 | |
102 | |
102 | # queue the request to open /etc/passwd |
103 | # queue the request to open /etc/passwd |
103 | aio_open "/etc/passwd", O_RDONLY, 0, sub { |
104 | aio_open "/etc/passwd", O_RDONLY, 0, sub { |
104 | my $fh = $_[0] |
105 | my $fh = shift |
105 | or die "error while opening: $!"; |
106 | or die "error while opening: $!"; |
106 | |
107 | |
107 | # stat'ing filehandles is generally non-blocking |
108 | # stat'ing filehandles is generally non-blocking |
108 | my $size = -s $fh; |
109 | my $size = -s $fh; |
109 | |
110 | |
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189 | use strict 'vars'; |
190 | use strict 'vars'; |
190 | |
191 | |
191 | use base 'Exporter'; |
192 | use base 'Exporter'; |
192 | |
193 | |
193 | BEGIN { |
194 | BEGIN { |
194 | our $VERSION = '2.2'; |
195 | our $VERSION = '2.3'; |
195 | |
196 | |
196 | our @AIO_REQ = qw(aio_sendfile aio_read aio_write aio_open aio_close aio_stat |
197 | our @AIO_REQ = qw(aio_sendfile aio_read aio_write aio_open aio_close aio_stat |
197 | aio_lstat aio_unlink aio_rmdir aio_readdir aio_scandir aio_symlink |
198 | aio_lstat aio_unlink aio_rmdir aio_readdir aio_scandir aio_symlink |
198 | aio_readlink aio_fsync aio_fdatasync aio_readahead aio_rename aio_link |
199 | aio_readlink aio_fsync aio_fdatasync aio_readahead aio_rename aio_link |
199 | aio_move aio_copy aio_group aio_nop aio_mknod); |
200 | aio_move aio_copy aio_group aio_nop aio_mknod); |
200 | our @EXPORT = (@AIO_REQ, qw(aioreq_pri aioreq_nice)); |
201 | our @EXPORT = (@AIO_REQ, qw(aioreq_pri aioreq_nice aio_block)); |
201 | our @EXPORT_OK = qw(poll_fileno poll_cb poll_wait flush |
202 | our @EXPORT_OK = qw(poll_fileno poll_cb poll_wait flush |
202 | min_parallel max_parallel max_idle |
203 | min_parallel max_parallel max_idle |
203 | nreqs nready npending nthreads |
204 | nreqs nready npending nthreads |
204 | max_poll_time max_poll_reqs); |
205 | max_poll_time max_poll_reqs); |
205 | |
206 | |
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461 | errors are being ignored. |
462 | errors are being ignored. |
462 | |
463 | |
463 | =cut |
464 | =cut |
464 | |
465 | |
465 | sub aio_copy($$;$) { |
466 | sub aio_copy($$;$) { |
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467 | aio_block { |
466 | my ($src, $dst, $cb) = @_; |
468 | my ($src, $dst, $cb) = @_; |
467 | |
469 | |
468 | my $pri = aioreq_pri; |
470 | my $pri = aioreq_pri; |
469 | my $grp = aio_group $cb; |
471 | my $grp = aio_group $cb; |
470 | |
472 | |
471 | aioreq_pri $pri; |
473 | aioreq_pri $pri; |
472 | add $grp aio_open $src, O_RDONLY, 0, sub { |
474 | add $grp aio_open $src, O_RDONLY, 0, sub { |
473 | if (my $src_fh = $_[0]) { |
475 | if (my $src_fh = $_[0]) { |
474 | my @stat = stat $src_fh; |
476 | my @stat = stat $src_fh; |
475 | |
477 | |
476 | aioreq_pri $pri; |
478 | aioreq_pri $pri; |
477 | add $grp aio_open $dst, O_CREAT | O_WRONLY | O_TRUNC, 0200, sub { |
479 | add $grp aio_open $dst, O_CREAT | O_WRONLY | O_TRUNC, 0200, sub { |
478 | if (my $dst_fh = $_[0]) { |
480 | if (my $dst_fh = $_[0]) { |
479 | aioreq_pri $pri; |
481 | aioreq_pri $pri; |
480 | add $grp aio_sendfile $dst_fh, $src_fh, 0, $stat[7], sub { |
482 | add $grp aio_sendfile $dst_fh, $src_fh, 0, $stat[7], sub { |
481 | if ($_[0] == $stat[7]) { |
483 | if ($_[0] == $stat[7]) { |
482 | $grp->result (0); |
484 | $grp->result (0); |
483 | close $src_fh; |
485 | close $src_fh; |
484 | |
486 | |
485 | # those should not normally block. should. should. |
487 | # those should not normally block. should. should. |
486 | utime $stat[8], $stat[9], $dst; |
488 | utime $stat[8], $stat[9], $dst; |
487 | chmod $stat[2] & 07777, $dst_fh; |
489 | chmod $stat[2] & 07777, $dst_fh; |
488 | chown $stat[4], $stat[5], $dst_fh; |
490 | chown $stat[4], $stat[5], $dst_fh; |
489 | close $dst_fh; |
491 | close $dst_fh; |
490 | } else { |
492 | } else { |
491 | $grp->result (-1); |
493 | $grp->result (-1); |
492 | close $src_fh; |
494 | close $src_fh; |
493 | close $dst_fh; |
495 | close $dst_fh; |
494 | |
496 | |
495 | aioreq $pri; |
497 | aioreq $pri; |
496 | add $grp aio_unlink $dst; |
498 | add $grp aio_unlink $dst; |
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|
499 | } |
497 | } |
500 | }; |
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|
501 | } else { |
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|
502 | $grp->result (-1); |
498 | }; |
503 | } |
499 | } else { |
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|
500 | $grp->result (-1); |
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|
501 | } |
504 | }, |
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505 | |
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|
506 | } else { |
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507 | $grp->result (-1); |
502 | }, |
508 | } |
503 | |
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504 | } else { |
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505 | $grp->result (-1); |
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|
506 | } |
509 | }; |
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510 | |
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511 | $grp |
507 | }; |
512 | } |
508 | |
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|
509 | $grp |
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510 | } |
513 | } |
511 | |
514 | |
512 | =item aio_move $srcpath, $dstpath, $callback->($status) |
515 | =item aio_move $srcpath, $dstpath, $callback->($status) |
513 | |
516 | |
514 | Try to move the I<file> (directories not supported as either source or |
517 | Try to move the I<file> (directories not supported as either source or |
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… | |
520 | that is successful, unlinking the C<$srcpath>. |
523 | that is successful, unlinking the C<$srcpath>. |
521 | |
524 | |
522 | =cut |
525 | =cut |
523 | |
526 | |
524 | sub aio_move($$;$) { |
527 | sub aio_move($$;$) { |
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528 | aio_block { |
525 | my ($src, $dst, $cb) = @_; |
529 | my ($src, $dst, $cb) = @_; |
526 | |
530 | |
527 | my $pri = aioreq_pri; |
531 | my $pri = aioreq_pri; |
528 | my $grp = aio_group $cb; |
532 | my $grp = aio_group $cb; |
529 | |
533 | |
530 | aioreq_pri $pri; |
534 | aioreq_pri $pri; |
531 | add $grp aio_rename $src, $dst, sub { |
535 | add $grp aio_rename $src, $dst, sub { |
532 | if ($_[0] && $! == EXDEV) { |
536 | if ($_[0] && $! == EXDEV) { |
533 | aioreq_pri $pri; |
537 | aioreq_pri $pri; |
534 | add $grp aio_copy $src, $dst, sub { |
538 | add $grp aio_copy $src, $dst, sub { |
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539 | $grp->result ($_[0]); |
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540 | |
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541 | if (!$_[0]) { |
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542 | aioreq_pri $pri; |
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543 | add $grp aio_unlink $src; |
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544 | } |
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|
545 | }; |
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|
546 | } else { |
535 | $grp->result ($_[0]); |
547 | $grp->result ($_[0]); |
536 | |
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537 | if (!$_[0]) { |
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538 | aioreq_pri $pri; |
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539 | add $grp aio_unlink $src; |
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|
540 | } |
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541 | }; |
548 | } |
542 | } else { |
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543 | $grp->result ($_[0]); |
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544 | } |
549 | }; |
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550 | |
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551 | $grp |
545 | }; |
552 | } |
546 | |
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547 | $grp |
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548 | } |
553 | } |
549 | |
554 | |
550 | =item aio_scandir $path, $maxreq, $callback->($dirs, $nondirs) |
555 | =item aio_scandir $path, $maxreq, $callback->($dirs, $nondirs) |
551 | |
556 | |
552 | Scans a directory (similar to C<aio_readdir>) but additionally tries to |
557 | Scans a directory (similar to C<aio_readdir>) but additionally tries to |
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600 | directory counting heuristic. |
605 | directory counting heuristic. |
601 | |
606 | |
602 | =cut |
607 | =cut |
603 | |
608 | |
604 | sub aio_scandir($$$) { |
609 | sub aio_scandir($$$) { |
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610 | aio_block { |
605 | my ($path, $maxreq, $cb) = @_; |
611 | my ($path, $maxreq, $cb) = @_; |
606 | |
612 | |
607 | my $pri = aioreq_pri; |
613 | my $pri = aioreq_pri; |
608 | |
614 | |
609 | my $grp = aio_group $cb; |
615 | my $grp = aio_group $cb; |
610 | |
616 | |
611 | $maxreq = 4 if $maxreq <= 0; |
617 | $maxreq = 4 if $maxreq <= 0; |
612 | |
618 | |
613 | # stat once |
619 | # stat once |
614 | aioreq_pri $pri; |
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615 | add $grp aio_stat $path, sub { |
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616 | return $grp->result () if $_[0]; |
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617 | my $now = time; |
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618 | my $hash1 = join ":", (stat _)[0,1,3,7,9]; |
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619 | |
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620 | # read the directory entries |
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621 | aioreq_pri $pri; |
620 | aioreq_pri $pri; |
622 | add $grp aio_readdir $path, sub { |
621 | add $grp aio_stat $path, sub { |
623 | my $entries = shift |
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|
624 | or return $grp->result (); |
622 | return $grp->result () if $_[0]; |
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623 | my $now = time; |
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624 | my $hash1 = join ":", (stat _)[0,1,3,7,9]; |
625 | |
625 | |
626 | # stat the dir another time |
626 | # read the directory entries |
627 | aioreq_pri $pri; |
627 | aioreq_pri $pri; |
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628 | add $grp aio_readdir $path, sub { |
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629 | my $entries = shift |
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630 | or return $grp->result (); |
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631 | |
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632 | # stat the dir another time |
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633 | aioreq_pri $pri; |
628 | add $grp aio_stat $path, sub { |
634 | add $grp aio_stat $path, sub { |
629 | my $hash2 = join ":", (stat _)[0,1,3,7,9]; |
635 | my $hash2 = join ":", (stat _)[0,1,3,7,9]; |
630 | |
636 | |
631 | my $ndirs; |
637 | my $ndirs; |
632 | |
638 | |
633 | # take the slow route if anything looks fishy |
639 | # take the slow route if anything looks fishy |
634 | if ($hash1 ne $hash2 or (stat _)[9] == $now) { |
640 | if ($hash1 ne $hash2 or (stat _)[9] == $now) { |
635 | $ndirs = -1; |
641 | $ndirs = -1; |
636 | } else { |
642 | } else { |
637 | # if nlink == 2, we are finished |
643 | # if nlink == 2, we are finished |
638 | # on non-posix-fs's, we rely on nlink < 2 |
644 | # on non-posix-fs's, we rely on nlink < 2 |
639 | $ndirs = (stat _)[3] - 2 |
645 | $ndirs = (stat _)[3] - 2 |
640 | or return $grp->result ([], $entries); |
646 | or return $grp->result ([], $entries); |
641 | } |
647 | } |
642 | |
648 | |
643 | # sort into likely dirs and likely nondirs |
649 | # sort into likely dirs and likely nondirs |
644 | # dirs == files without ".", short entries first |
650 | # dirs == files without ".", short entries first |
645 | $entries = [map $_->[0], |
651 | $entries = [map $_->[0], |
646 | sort { $b->[1] cmp $a->[1] } |
652 | sort { $b->[1] cmp $a->[1] } |
647 | map [$_, sprintf "%s%04d", (/.\./ ? "1" : "0"), length], |
653 | map [$_, sprintf "%s%04d", (/.\./ ? "1" : "0"), length], |
648 | @$entries]; |
654 | @$entries]; |
649 | |
655 | |
650 | my (@dirs, @nondirs); |
656 | my (@dirs, @nondirs); |
651 | |
657 | |
652 | my $statgrp = add $grp aio_group sub { |
658 | my $statgrp = add $grp aio_group sub { |
653 | $grp->result (\@dirs, \@nondirs); |
659 | $grp->result (\@dirs, \@nondirs); |
654 | }; |
660 | }; |
655 | |
661 | |
656 | limit $statgrp $maxreq; |
662 | limit $statgrp $maxreq; |
657 | feed $statgrp sub { |
663 | feed $statgrp sub { |
658 | return unless @$entries; |
664 | return unless @$entries; |
659 | my $entry = pop @$entries; |
665 | my $entry = pop @$entries; |
660 | |
666 | |
661 | aioreq_pri $pri; |
667 | aioreq_pri $pri; |
662 | add $statgrp aio_stat "$path/$entry/.", sub { |
668 | add $statgrp aio_stat "$path/$entry/.", sub { |
663 | if ($_[0] < 0) { |
669 | if ($_[0] < 0) { |
664 | push @nondirs, $entry; |
670 | push @nondirs, $entry; |
665 | } else { |
671 | } else { |
666 | # need to check for real directory |
672 | # need to check for real directory |
667 | aioreq_pri $pri; |
673 | aioreq_pri $pri; |
668 | add $statgrp aio_lstat "$path/$entry", sub { |
674 | add $statgrp aio_lstat "$path/$entry", sub { |
669 | if (-d _) { |
675 | if (-d _) { |
670 | push @dirs, $entry; |
676 | push @dirs, $entry; |
671 | |
677 | |
672 | unless (--$ndirs) { |
678 | unless (--$ndirs) { |
673 | push @nondirs, @$entries; |
679 | push @nondirs, @$entries; |
674 | feed $statgrp; |
680 | feed $statgrp; |
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681 | } |
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682 | } else { |
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683 | push @nondirs, $entry; |
675 | } |
684 | } |
676 | } else { |
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677 | push @nondirs, $entry; |
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678 | } |
685 | } |
679 | } |
686 | } |
680 | } |
687 | }; |
681 | }; |
688 | }; |
682 | }; |
689 | }; |
683 | }; |
690 | }; |
684 | }; |
691 | }; |
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692 | |
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693 | $grp |
685 | }; |
694 | } |
686 | |
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687 | $grp |
|
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688 | } |
695 | } |
689 | |
696 | |
690 | =item aio_fsync $fh, $callback->($status) |
697 | =item aio_fsync $fh, $callback->($status) |
691 | |
698 | |
692 | Asynchronously call fsync on the given filehandle and call the callback |
699 | Asynchronously call fsync on the given filehandle and call the callback |
… | |
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1109 | *$sym |
1116 | *$sym |
1110 | } |
1117 | } |
1111 | |
1118 | |
1112 | min_parallel 8; |
1119 | min_parallel 8; |
1113 | |
1120 | |
1114 | END { |
1121 | END { flush } |
1115 | min_parallel 1; |
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1116 | flush; |
|
|
1117 | }; |
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1118 | |
1122 | |
1119 | 1; |
1123 | 1; |
1120 | |
1124 | |
1121 | =head2 FORK BEHAVIOUR |
1125 | =head2 FORK BEHAVIOUR |
1122 | |
1126 | |