tree 063fc22439e0eb99210a51d8521b73cdcad2c6a4
parent d41dc171496e20e6918909b4a34776eada4b7862
author Mike Klein <mtklein@chromium.org> 1504281196 -0400
committer Skia Commit-Bot <skia-commit-bot@chromium.org> 1504282787 +0000

Add FIFO thread pool, use it for most things.

We like a LIFO default thread pool in tools like DM for better
memory/time locality... the bots use less memory this way, and
generally run faster.

But most use cases want a FIFO queue, so that they can get going
on the next parts of early work while later work is still running.

This splits the implementation into one using SkTArray and pop_back
for LIFO, and a new one using std::deque and pop_front for FIFO.

Change-Id: Ief203b6869a00f1f8084019431a781d15fc63750
Reviewed-on: https://skia-review.googlesource.com/41849
Commit-Queue: Mike Klein <mtklein@chromium.org>
Commit-Queue: Brian Osman <brianosman@google.com>
Reviewed-by: Yuqian Li <liyuqian@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>