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epriestley ceb082ef6b Give Futures clearer start/end and exception semantics
Summary:
Ref T13555. Currently:

  - If an exception is raised in "start()", the exception state is not set on the future.
  - Futures do not always call "startFuture()" before starting, and do not always call "endFuture()" once they become resolvable.
  - If you start an ExecFuture which immediately fails and then call "getPID()" on it, you get an unclear exception.

Simplify these behaviors:

  - In FutureIterator, only start futures which have not already started.
  - When starting a future on any pathway, run start code.
  - When a future becomes resolvable on any pathway, run end code.
  - Raise a more clear exception when calling "getPID()" on a future with no subprocess.

Test Plan: Faked a failing subprocess with "$proc = null", ran "bin/phd debug taskmaster" etc. Got clearer errors and more consistent future lifecycle workflows.

Maniphest Tasks: T13555

Differential Revision: https://secure.phabricator.com/D21423
2020-07-23 11:22:20 -07:00
bin When "ArcanistRuntime" exits with a nonzero exit code, emit that exit code 2020-02-27 06:17:02 -08:00
externals Fully merge "libphutil/" into "arcanist/" 2020-02-12 15:17:38 -08:00
resources Merge utility/support changes from "wilds" to "master" 2020-02-13 14:10:09 -08:00
scripts Alias newer "--library" to "--load-phutil-library" in legacy workflows 2020-06-07 06:44:07 -07:00
src Give Futures clearer start/end and exception semantics 2020-07-23 11:22:20 -07:00
support When saving and restoring local state in Mercurial, also save and restore bookmarks 2020-07-08 15:30:17 -07:00
.arcconfig Set "history.immutable" to "false" explicitly in .arcconfig in Arcanist 2016-08-03 08:13:09 -07:00
.arclint Add new "Hardpoint" classes to support request parallelization 2020-04-08 09:23:50 -07:00
.arcunit Rough version of configuration driven unit test engine 2015-08-11 06:54:16 +10:00
.editorconfig Test XHPAST linter rules in isolation 2015-11-19 08:57:23 +11:00
.gitignore Allow "hg arc-ls-markers" to run under Python 2 or Python 3 2020-07-06 15:29:35 -07:00
LICENSE Fix text lint issues 2015-04-07 18:09:27 +10:00
NOTICE Remove duplicate newline 2014-07-17 08:25:22 +10:00
README.md Move README to Markdown 2015-04-13 13:01:16 -07:00

Arcanist is the command-line tool for Phabricator. It allows you to interact with Phabricator installs to send code for review, download patches, transfer files, view status, make API calls, and various other things. You can read more in the User Guide

For more information about Phabricator, see http://phabricator.org/.

LICENSE

Arcanist is released under the Apache 2.0 license except as otherwise noted.