view tests/test-rebuildstate.t @ 13760:ed97955e0c04

convert/mtn: add support for using monotone's "automate stdio" when available

Currently the convert extension spawns a new mtn process for each
operation. For a large repository, this ends up being hundreds of
thousands of processes. The following enables usage of monotone's
"automate stdio" functionality - documented at:

http://www.monotone.ca/docs/Automation.html#index-mtn-automate-stdio-188

The effect is that (after determining that a new enough mtn executable
is available) a single long-running mtn process is used for all the
operations, using stdin/stdout to send commands and read output.

This has a pretty significant effect on the performance of some parts
of the conversion process.

basic test for hg debugrebuildstate

  $ hg init repo
  $ cd repo

  $ touch foo bar
  $ hg ci -Am 'add foo bar'
  adding bar
  adding foo

  $ touch baz
  $ hg add baz
  $ hg rm bar

  $ hg debugrebuildstate

state dump after

  $ hg debugstate --nodates | sort
  n 666         -1 bar
  n 666         -1 foo

status

  $ hg st -A
  ! bar
  ? baz
  C foo