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24 | $req->cancel; # cancel request if still in queue |
24 | $req->cancel; # cancel request if still in queue |
25 | |
25 | |
26 | my $grp = aio_group sub { print "all stats done\n" }; |
26 | my $grp = aio_group sub { print "all stats done\n" }; |
27 | add $grp aio_stat "..." for ...; |
27 | add $grp aio_stat "..." for ...; |
28 | |
28 | |
29 | # AnyEvent integration |
29 | # AnyEvent integration (EV, Event, Glib, Tk, urxvt, pureperl...) |
30 | open my $fh, "<&=" . IO::AIO::poll_fileno or die "$!"; |
30 | open my $fh, "<&=" . IO::AIO::poll_fileno or die "$!"; |
31 | my $w = AnyEvent->io (fh => $fh, poll => 'r', cb => sub { IO::AIO::poll_cb }); |
31 | my $w = AnyEvent->io (fh => $fh, poll => 'r', cb => sub { IO::AIO::poll_cb }); |
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32 | |
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33 | # EV integration |
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34 | my $w = EV::io IO::AIO::poll_fileno, EV::READ, \&IO::AIO::poll_cb; |
32 | |
35 | |
33 | # Event integration |
36 | # Event integration |
34 | Event->io (fd => IO::AIO::poll_fileno, |
37 | Event->io (fd => IO::AIO::poll_fileno, |
35 | poll => 'r', |
38 | poll => 'r', |
36 | cb => \&IO::AIO::poll_cb); |
39 | cb => \&IO::AIO::poll_cb); |
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546 | Delete a directory tree starting (and including) $path, return the |
549 | Delete a directory tree starting (and including) $path, return the |
547 | status of the final "rmdir" only. This is a composite request that |
550 | status of the final "rmdir" only. This is a composite request that |
548 | uses "aio_scandir" to recurse into and rmdir directories, and unlink |
551 | uses "aio_scandir" to recurse into and rmdir directories, and unlink |
549 | everything else. |
552 | everything else. |
550 | |
553 | |
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554 | aio_sync $callback->($status) |
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555 | Asynchronously call sync and call the callback when finished. |
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556 | |
551 | aio_fsync $fh, $callback->($status) |
557 | aio_fsync $fh, $callback->($status) |
552 | Asynchronously call fsync on the given filehandle and call the |
558 | Asynchronously call fsync on the given filehandle and call the |
553 | callback with the fsync result code. |
559 | callback with the fsync result code. |
554 | |
560 | |
555 | aio_fdatasync $fh, $callback->($status) |
561 | aio_fdatasync $fh, $callback->($status) |
556 | Asynchronously call fdatasync on the given filehandle and call the |
562 | Asynchronously call fdatasync on the given filehandle and call the |
557 | callback with the fdatasync result code. |
563 | callback with the fdatasync result code. |
558 | |
564 | |
559 | If this call isn't available because your OS lacks it or it couldn't |
565 | If this call isn't available because your OS lacks it or it couldn't |
560 | be detected, it will be emulated by calling "fsync" instead. |
566 | be detected, it will be emulated by calling "fsync" instead. |
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567 | |
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568 | aio_pathsync $path, $callback->($status) |
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569 | This request tries to open, fsync and close the given path. This is |
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570 | a composite request intended tosync directories after directory |
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571 | operations (E.g. rename). This might not work on all operating |
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572 | systems or have any specific effect, but usually it makes sure that |
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573 | directory changes get written to disc. It works for anything that |
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574 | can be opened for read-only, not just directories. |
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575 | |
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576 | Passes 0 when everything went ok, and -1 on error. |
561 | |
577 | |
562 | aio_group $callback->(...) |
578 | aio_group $callback->(...) |
563 | This is a very special aio request: Instead of doing something, it |
579 | This is a very special aio request: Instead of doing something, it |
564 | is a container for other aio requests, which is useful if you want |
580 | is a container for other aio requests, which is useful if you want |
565 | to bundle many requests into a single, composite, request with a |
581 | to bundle many requests into a single, composite, request with a |
… | |
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647 | }; |
663 | }; |
648 | |
664 | |
649 | This makes it very easy to create composite requests (see the source of |
665 | This makes it very easy to create composite requests (see the source of |
650 | "aio_move" for an application) that work and feel like simple requests. |
666 | "aio_move" for an application) that work and feel like simple requests. |
651 | |
667 | |
652 | * The IO::AIO::GRP objects will be cleaned up during calls to |
668 | * The IO::AIO::GRP objects will be cleaned up during calls to |
653 | "IO::AIO::poll_cb", just like any other request. |
669 | "IO::AIO::poll_cb", just like any other request. |
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670 | |
654 | * They can be canceled like any other request. Canceling will cancel not |
671 | * They can be canceled like any other request. Canceling will cancel |
655 | only the request itself, but also all requests it contains. |
672 | not only the request itself, but also all requests it contains. |
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673 | |
656 | * They can also can also be added to other IO::AIO::GRP objects. |
674 | * They can also can also be added to other IO::AIO::GRP objects. |
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675 | |
657 | * You must not add requests to a group from within the group callback |
676 | * You must not add requests to a group from within the group callback |
658 | (or any later time). |
677 | (or any later time). |
659 | |
678 | |
660 | Their lifetime, simplified, looks like this: when they are empty, they |
679 | Their lifetime, simplified, looks like this: when they are empty, they |
661 | will finish very quickly. If they contain only requests that are in the |
680 | will finish very quickly. If they contain only requests that are in the |
662 | "done" state, they will also finish. Otherwise they will continue to |
681 | "done" state, they will also finish. Otherwise they will continue to |
663 | exist. |
682 | exist. |
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680 | request itself. Useful when you queued a lot of events but got a |
699 | request itself. Useful when you queued a lot of events but got a |
681 | result early. |
700 | result early. |
682 | |
701 | |
683 | $grp->result (...) |
702 | $grp->result (...) |
684 | Set the result value(s) that will be passed to the group callback |
703 | Set the result value(s) that will be passed to the group callback |
685 | when all subrequests have finished and set thre groups errno to the |
704 | when all subrequests have finished and set the groups errno to the |
686 | current value of errno (just like calling "errno" without an error |
705 | current value of errno (just like calling "errno" without an error |
687 | number). By default, no argument will be passed and errno is zero. |
706 | number). By default, no argument will be passed and errno is zero. |
688 | |
707 | |
689 | $grp->errno ([$errno]) |
708 | $grp->errno ([$errno]) |
690 | Sets the group errno value to $errno, or the current value of errno |
709 | Sets the group errno value to $errno, or the current value of errno |