view tests/test-persistent-nodemap.t @ 44308:5962fd0d1045

nodemap: write nodemap data on disk

Let us start writing data on disk (so that we can read it from there later).
This series of changeset is going to focus first on having data on disk and
updating it.

Right now the data is written right next to the revlog data, in the store. We
might move it to cache (with proper cache validation mechanism) later, but for
now revlog have a storevfs instance and it is simpler to us it. The right
location for this data is not the focus of this series.

Differential Revision: https://phab.mercurial-scm.org/D7835

===================================
Test the persistent on-disk nodemap
===================================


  $ hg init test-repo
  $ cd test-repo
  $ cat << EOF >> .hg/hgrc
  > [experimental]
  > exp-persistent-nodemap=yes
  > EOF
  $ hg debugbuilddag .+5000
  $ hg debugnodemap --dump | f --sha256 --size
  size=122880, sha256=b961925120e1c9bc345c199b2cc442abc477029fdece37ef9d99cbe59c0558b7
  $ f --sha256 --bytes=256 --hexdump --size < .hg/store/00changelog.n
  size=122880, sha256=b961925120e1c9bc345c199b2cc442abc477029fdece37ef9d99cbe59c0558b7
  0000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff |................|
  0010: ff ff ff ff ff ff ff ff ff ff fa c2 ff ff ff ff |................|
  0020: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff |................|
  0030: ff ff ff ff ff ff ed b3 ff ff ff ff ff ff ff ff |................|
  0040: ff ff ff ff ff ff ee 34 00 00 00 00 ff ff ff ff |.......4........|
  0050: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff |................|
  0060: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff |................|
  0070: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff |................|
  0080: ff ff ff ff ff ff f8 50 ff ff ff ff ff ff ff ff |.......P........|
  0090: ff ff ff ff ff ff ff ff ff ff ec c7 ff ff ff ff |................|
  00a0: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff |................|
  00b0: ff ff ff ff ff ff fa be ff ff f2 fc ff ff ff ff |................|
  00c0: ff ff ff ff ff ff ef ea ff ff ff ff ff ff f9 17 |................|
  00d0: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff |................|
  00e0: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff |................|
  00f0: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff |................|