From: Junio C Hamano <gitster@pobox.com>
Date: Tue, 12 Jan 2016 23:16:54 +0000 (-0800)
Subject: Merge branch 'sb/submodule-parallel-fetch'
X-Git-Tag: v2.8.0-rc0~127
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=187c0d3d9e63f7d84d7055372f07bedb52849f06;p=thirdparty%2Fgit.git

Merge branch 'sb/submodule-parallel-fetch'

Add a framework to spawn a group of processes in parallel, and use
it to run "git fetch --recurse-submodules" in parallel.

Rerolled and this seems to be a lot cleaner.  The merge of the
earlier one to 'next' has been reverted.

* sb/submodule-parallel-fetch:
  submodules: allow parallel fetching, add tests and documentation
  fetch_populated_submodules: use new parallel job processing
  run-command: add an asynchronous parallel child processor
  sigchain: add command to pop all common signals
  strbuf: add strbuf_read_once to read without blocking
  xread: poll on non blocking fds
  submodule.c: write "Fetching submodule <foo>" to stderr
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187c0d3d9e63f7d84d7055372f07bedb52849f06