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pycompat: export queue module instead of symbols in module (API)...

pycompat: export queue module instead of symbols in module (API) Previously, pycompat and util re-exported individual symbols from the queue module. This had the side-effect of forcing the loading of the queue module whenever pycompat/util was imported. These symbols aren't used very often. So importing the module to get a handle on the symbols is wasteful. This commit changes pycompat so it no longer exports the individual symbols in the queue module. Instead, we make the imported module a "public" symbol. We drop the individual symbol aliases from the util module. All consumers are updated to use pycompat.queue.* instead. This change makes 300 invocations of `hg log -r. -T '{rev}\n'` a little faster: before: 18.44s after: 17.87s Differential Revision: https://phab.mercurial-scm.org/D3441

Boris Feld - - Load All Authors

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      ====================================

      Testing head checking code: Case B-1

      ====================================

      Mercurial checks for the introduction of new heads on push. Evolution comes

      into play to detect if existing branches on the server are being replaced by

      some of the new one we push.

      This case is part of a series of tests checking this behavior.

      Category B: simple case involving pruned changesets

      TestCase 1: single pruned changeset

      .. old-state:

      ..

      .. * 1 changeset branch

      ..

      .. new-state:

      ..

      .. * old branch is pruned

      .. * 1 new unrelated branch

      ..

      .. expected-result:

      ..

      .. * push allowed

      ..

      .. graph-summary:

      ..

      ..       ◔ B

      ..       |

      ..   A ⊗ |

      ..     |/

      ..     ●

        $ . $TESTDIR/testlib/push-checkheads-util.sh

      Test setup

      ----------

        $ mkdir B1

        $ cd B1

        $ setuprepos

        creating basic server and client repo

        updating to branch default

        2 files updated, 0 files merged, 0 files removed, 0 files unresolved

        $ cd client

        $ hg up 0

        0 files updated, 0 files merged, 1 files removed, 0 files unresolved

        $ mkcommit B0

        created new head

        $ hg debugobsolete --record-parents `getid "desc(A0)"`

        obsoleted 1 changesets

        $ hg log -G --hidden

        @  74ff5441d343 (draft): B0

        |

        | x  8aaa48160adc (draft): A0

        |/

        o  1e4be0697311 (public): root

      Actual testing

      --------------

        $ hg push

        pushing to $TESTTMP/B1/server

        searching for changes

        adding changesets

        adding manifests

        adding file changes

        added 1 changesets with 1 changes to 1 files (+1 heads)

        1 new obsolescence markers

        obsoleted 1 changesets

        $ cd ../..

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				====================================
				Testing head checking code: Case B-1
				====================================

				Mercurial checks for the introduction of new heads on push. Evolution comes
				into play to detect if existing branches on the server are being replaced by
				some of the new one we push.

				This case is part of a series of tests checking this behavior.

				Category B: simple case involving pruned changesets
				TestCase 1: single pruned changeset

				.. old-state:
				..
				.. * 1 changeset branch
				..
				.. new-state:
				..
				.. * old branch is pruned
				.. * 1 new unrelated branch
				..
				.. expected-result:
				..
				.. * push allowed
				..
				.. graph-summary:
				..
				.. ◔ B
				.. \|
				.. A ⊗ \|
				.. \|/
				.. ●

				$ . $TESTDIR/testlib/push-checkheads-util.sh

				Test setup
				----------

				$ mkdir B1
				$ cd B1
				$ setuprepos
				creating basic server and client repo
				updating to branch default
				2 files updated, 0 files merged, 0 files removed, 0 files unresolved
				$ cd client
				$ hg up 0
				0 files updated, 0 files merged, 1 files removed, 0 files unresolved
				$ mkcommit B0
				created new head
				$ hg debugobsolete --record-parents `getid "desc(A0)"`
				obsoleted 1 changesets
				$ hg log -G --hidden
				@ 74ff5441d343 (draft): B0
				\|
				\| x 8aaa48160adc (draft): A0
				\|/
				o 1e4be0697311 (public): root


				Actual testing
				--------------

				$ hg push
				pushing to $TESTTMP/B1/server
				searching for changes
				adding changesets
				adding manifests
				adding file changes
				added 1 changesets with 1 changes to 1 files (+1 heads)
				1 new obsolescence markers
				obsoleted 1 changesets

				$ cd ../..