Make sure thread pool has at least 1 worker.

Make sure thread pool has at least 1 worker.

When doing a 'git cl archive' if there are no branches other then master the
command will crash with a 'ValueError: Number of processes must be at least 1'
when attempting to create the thread pool.

This Cl modifies the code to use the maximum of the changes and 1 as the number
of threads to create so we have at least one thread to work with.

Committed: https://chromium.googlesource.com/chromium/tools/depot_tools/+/99d3017946e02465e04c557e0c1b1201ada85a58

[dsinclair, 2016-08-09 17:43:33]

The CQ bit was checked by dsinclair@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2016-08-09 17:43:44]

Dry run: CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[dsinclair, 2016-08-09 17:43:49]

dsinclair@chromium.org changed reviewers:
+ dpranke@chromium.org

[dsinclair, 2016-08-09 17:43:50]

PTAL.

[tandrii(chromium), 2016-08-09 17:44:59]

tandrii@chromium.org changed reviewers:
+ tandrii@chromium.org

[tandrii(chromium), 2016-08-09 17:45:00]

Perfect! LGTM

[dsinclair, 2016-08-09 17:45:56]

The CQ bit was unchecked by dsinclair@chromium.org

[dsinclair, 2016-08-09 17:45:57]

The CQ bit was checked by dsinclair@chromium.org

[commit-bot: I haz the power, 2016-08-09 17:46:04]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2016-08-09 17:49:02]

Description was changed from

==========
Make sure thread pool has at least 1 worker.

When doing a 'git cl archive' if there are no branches other then master the
command will crash with a 'ValueError: Number of processes must be at least 1'
when attempting to create the thread pool.

This Cl modifies the code to use the maximum of the changes and 1 as the number
of threads to create so we have at least one thread to work with.
==========

to

==========
Make sure thread pool has at least 1 worker.

When doing a 'git cl archive' if there are no branches other then master the
command will crash with a 'ValueError: Number of processes must be at least 1'
when attempting to create the thread pool.

This Cl modifies the code to use the maximum of the changes and 1 as the number
of threads to create so we have at least one thread to work with.

Committed:
https://chromium.googlesource.com/chromium/tools/depot_tools/+/99d3017946e024...
==========

[commit-bot: I haz the power, 2016-08-09 17:49:03]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/tools/depot_tools/+/99d3017946e024...

[Dirk Pranke, 2016-08-09 18:23:57]

lgtm