oracular (3) Test2::Manual::Concurrency.3pm.gz

Provided by: libtest2-suite-perl_0.000163-1_all bug

NAME
       Test2::Manual::Concurrency - Documentation for Concurrency support.


FORKING
   Test2
       Test2 supports forking. For forking to work you need to load Test2::IPC.

   Test::Builder
       Test::Builder Did not used to support forking, but now that it is based on Test2 it does. Test2::IPC must
       be loaded just as with Test2.

   Test2::Suite
       Test2::Suite tools should all work fine with true forking unless otherwise noted. Pseudo-fork via threads
       (Windows and a few others) is not supported, but may work.

       Patches will be accepted to repair any pseudo-fork issues, but for these to be used or tested they must
       be requested. Fork tests should not run on pseudo-fork systems unless they are requested with an
       environment var, or the AUTHOR_TESTING var. Pseudo-fork is fragile, and we do not want to block install
       due to a pseudo-fork flaw.

   Test::SharedFork
       Test::SharedFork is currently support and maintained, though it is no longer necessary thanks to
       Test2::IPC. If usage ever drops off then the module may be deprecated, but for now the policy is to not
       let it break. Currently it simply loads Test2::IPC if it can, and falls back to the old methods on legacy
       installs.

   Others
       Individual authors are free to support or not support forking as they see fit.


THREADING
       Note This only applies to ithreads.

   Test2
       The core of Test2 supports threading so long as Test2::IPC is loaded. Basic threading support (making
       sure events make it to the parent thread) is fully supported, and must not be broken.

       Some times perl installs have broken threads (Some 5.10 versions compiled on newer gcc's will segv by
       simply starting a thread). This is beyond Test2's control, and not solvable in Test2. That said we strive
       for basic threading support on perl 5.8.1+.

       If Test2 fails for threads on any perl 5.8 or above, and it is reasonably possible for Test2 to work
       around the issue, it should. (Patches and bug reports welcome).

   Test::Builder
       Test::Builder has had thread support for a long time. With Test2 the mechanism for thread support was
       switched to Test2::IPC. Test::Builder should still support threads as much as it did before the switch to
       Test2.  Support includes auto-enabling thread support if threads is loaded before Test::Builder.

       If there is a deviation between the new and old threading behavior then it is a bug (unless the old
       behavior itself can be classified as a bug.) Please report (or patch!) any such threading issues.

   Test2::Suite
       Tools in Test2::Suite have minimal threading support. Most of these tools do not care/notice threading
       and simply work because Test2::IPC handles it.  Feel free to report any thread related bugs in
       Test2::Suite. Be aware though that these tools are not legacy, and have no pre-existing thread support,
       we reserve the right to refuse adding thread support to them.

       Test2::Workflow

       Test2::Workflow has been merged into Test2::Suite, so it gets addressed by this policy.

       Test2::Workflow has thread support, but you must ask for it. Thread tests for Test2::Workflow do not
       event run without setting either the AUTHOR_TESTING env var, or the T2_DO_THREAD_TESTS env var.

       To use threads with Test2::Workflow you must set the T2_WORKFLOW_USE_THREADS env var.

       If you do rely on threads with Test2::Workflow and find a bug please report it, but it will be given an
       ultra-low priority. Merging patches that fix threading issues will be given normal priority.


SEE ALSO
       Test2 - Test2 itself.

       Test2::Suite - Initial tools built using Test2.

       Test2::Manual - Primary index of the manual.


SOURCE
       The source code repository for Test2-Manual can be found at https://github.com/Test-More/Test2-Suite/.


MAINTAINERS
       Chad Granum <exodist@cpan.org>


AUTHORS
       Chad Granum <exodist@cpan.org>


       Copyright 2018 Chad Granum <exodist@cpan.org>.

       This program is free software; you can redistribute it and/or modify it under the same terms as Perl
       itself.

       See http://dev.perl.org/licenses/