Revision history for Future-IO

0.23    2026-03-12
        [CHANGES]
         * Improved performance of ImplBase's timer queue implementation
         * Also probe for KQueue implementation on OpenBSD and Darwin

        [BUGFIXES]
         * Fixed handling of `O_NONBLOCK` flag on default impl
         * Ensure that `->poll` enqueued during another `->poll` in default
           impl is not immediately invoked

0.22    2026-02-27
        [CHANGES]
         * Document that you should always `poll` for at least one of the
           `POLLIN`, `POLLOUT` or `POLLPRI` flags
         * Provide optional base implementation methods for handling an
           alarm+sleep timer queue, to reduce code duplication
         * Probe for `Future::IO::Impl::KQueue` on FreeBSD

        [BUGFIXES]
         * Make sure to actually load the `POSIX` module to get its constants
         * Skip over probed impl modules that do not support the `poll` method

0.21    2026-02-26
        [CHANGES]
         * Much improved default internal implementation:
            - Supports ->poll with `POLLPRI`
            - Supports ->poll on multiple filehandles at once

        [BUGFIXES]
         * Need to `->poll` for both `POLLOUT` and `POLLPRI` while waiting for
           `->connect`; this may make it work on Windows

0.20    2026-02-10
        [CHANGES]
         * Also export and document the `POLLPRI` polling constant
         * Add `PERL_FUTURE_IO_IMPL` environment variable

0.19    2026-01-18
        [CHANGES]
         * Added new `->poll` method as a neater and standardised way of doing
           what used to informally use ->ready_for_read or ->ready_for_write
         * Clarify in documentation the limits of guarantees around what
           happens when filehandle IO futures are cancelled

0.18    2026-01-08
        [CHANGES]
         * Added `->load_best_impl`

        [BUGFIXES]
         * Require `Test::Future::IO::Impl` version 0.16 for portability
           bugfixes to the 'connect' and 'send' tests
         * Be prepared for the fact that `IO::Socket->send` might throw
         * Don't close() the local end of the STDIN stream in System.pm, as
           that upsets most implementation modules
         * `->send` in ImplBase should try agian using _send1, not _syswrite1

0.17    2025-07-15
        [CHANGES]
         * Added new `->send`, `->recv` and `->recvfrom` socket IO wrapping
           methods
         * Provide `->read` and `->write` as better names for what were named
           `->sysread` and `->syswrite`

0.16    2024-09-16
        [CHANGES]
         * Added `Future::IO->load_impl` convenience method for toplevel
           applications

0.15    2023-10-18
        [BUGFIXES]
         * Avoid creating a long `->then` chain of Futures when handling
           EAGAIN (RT150117)
         * Temporarily enable blocking mode on filehandles when the default
           event loop is not using `select()`, to avoid a CPU spin (RT150117)

0.14    2023-04-25
        [CHANGES]
         * Moved `Test::Future::IO::Impl` into its own distribution, so that
           downstream packages don't have to runtime-depend on `Test2`

0.13    2023-02-19
        [CHANGES]
         * Swap all unit tests from `Test::More` to `Test2::V0`
         * Reomved test-time dependency on `Test::Identity`

        [BUGFIXES]
         * t/30system.t should check that the impl actually provides a
           `->waitpid` method before using it
         * Insert a hacky "sleep 1" into the connect tests on MSWin32 in case
           that helps fix the test failures

0.12    2023-01-31
        [CHANGES]
         * Added `Future::IO::System`, containing a system()-like and a
           qx()-like method
         * Added `->sysread_until_eof` method
         * Update to perl v5.14 `package NAME VERSION` syntax
         * Use `await` notation in method minisynopsis lines

        [BUGFIXES]
         * Need to work harder to set LocalAddr during socket tests

0.11    2022-01-07
        [CHANGES]
         * Added ->connect and ->accept for socket-based code
         * Provide ->HAVE_MULTIPLE_FILEHANDLES for user code to check if a
           real impl has been loaded
         * Simplify the default implementation so it can reuse most of the
           ImplBase class
         * Wording fix in docs for ->alarm

0.10    2021-08-26
        [BUGFIXES]
         * Skip the unit test about filling pipes with ->syswrite on MSWin32
           because the test just hangs there (RT138985)

0.09    2021-08-24
        [CHANGES]
         * Added ->waitpid that real event loop implementations can provide
           (though built-in default implementation does not provide it)
         * Extracted impl tests to shareable Test::Future::IO::Impl module
         * Add links to existing CPAN implementations and test modules

0.08    2020-12-31
        [CHANGES]
         * Added Future::IO->alarm

        [BUGFIXES]
         * Avoid CPU-spin in the single-filehandle case on nonblocking
           filehandles

0.07    2020-03-24
        [CHANGES]
         * Make the ->await method wait until the future instance is ready
         * Document ->await

0.06    2019-06-26 18:11:54
        [CHANGES]
         * Added Future::IO::ImplBase to assist implementation authors

0.05    2019-05-07 01:00:19
        [CHANGES]
         * Misc small docs fixes

        [BUGFIXES]
         * Expect EINVAL on MSWin32 for pipe close write test, rather than
           EPIPE

0.04    2019-04-27 19:08:40
        [CHANGES]
         * Added ->syswrite and ->syswrite_exactly

        [BUGFIXES]
         * Implement ->sysread_exactly test a better way that shouldn't break
           on Windows due to select() on pipes

0.03    2019-04-25 22:39:55
        [CHANGES]
         * Add ->sysread_exactly

0.02    2019-04-10 14:01:17
        [CHANGES]
         * Provide and document the $IMPL package variable mechanism

        [BUGFIXES]
         * Skip t/10sleep+sysread.t on MSWin32 because Windows doesn't support
           select() on pipes (RT129108)

0.01    2019-04-10 01:44:18
        First version, released on an unsuspecting world.