Integrate parallel_emerge with emerge, boosting performance.

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Instead of loosely wrapping emerge, parallel_emerge now integrates tightly with emerge. This boosts performance while allowing us to map dependencies more accurately.

With this change, build_image --fast can clock under 4 minutes, and build_packages --fast now clocks as low as 4:30. With the --rebuild option, build_packages takes 5:30, but it has the big benefit of producing actually-correct results.

Note that this change also depends on us updating the various build scripts to prefix
calls to parallel_emerge with sudo -E.

TEST=Ran several parallel_emerge test cases, build_packages --fast, and
     build_image --fast
BUG=none

Review URL: http://codereview.chromium.org/2891013

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This commit is contained in:

David James 2010-07-20 11:21:23 -07:00

parent b44b04d0f9

commit dd059edd58

1 changed files with 1074 additions and 607 deletions

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