branchcache: add a "pure topological head" fast path
In a narrow but actually quick common case, all topological heads are all on
the same branch and all open. In this case, computing the branch map is very
simple. We can quickly detect situation where this situation will not change.
So we update the V3 format to be able to express this situation and upgrade the
update code to detect we remains in that mode.
The branch cache is populated with the actual value when the branch map is
accessed, but the update_disk method can do the update without needing to
populate it.
# same user, same group
trusted
global = /some/path
local = /another/path
untrusted
. . global = /some/path
. . local = /another/path
# same user, different group
trusted
global = /some/path
local = /another/path
untrusted
. . global = /some/path
. . local = /another/path
# different user, same group
not trusting file .hg/hgrc from untrusted user abc, group bar
trusted
global = /some/path
untrusted
. . global = /some/path
. . local = /another/path
# different user, same group, but we trust the group
trusted
global = /some/path
local = /another/path
untrusted
. . global = /some/path
. . local = /another/path
# different user, different group
not trusting file .hg/hgrc from untrusted user abc, group def
trusted
global = /some/path
untrusted
. . global = /some/path
. . local = /another/path
# different user, different group, but we trust the user
trusted
global = /some/path
local = /another/path
untrusted
. . global = /some/path
. . local = /another/path
# different user, different group, but we trust the group
trusted
global = /some/path
local = /another/path
untrusted
. . global = /some/path
. . local = /another/path
# different user, different group, but we trust the user and the group
trusted
global = /some/path
local = /another/path
untrusted
. . global = /some/path
. . local = /another/path
# we trust all users
# different user, different group
trusted
global = /some/path
local = /another/path
untrusted
. . global = /some/path
. . local = /another/path
# we trust all groups
# different user, different group
trusted
global = /some/path
local = /another/path
untrusted
. . global = /some/path
. . local = /another/path
# we trust all users and groups
# different user, different group
trusted
global = /some/path
local = /another/path
untrusted
. . global = /some/path
. . local = /another/path
# we don't get confused by users and groups with the same name
# different user, different group
not trusting file .hg/hgrc from untrusted user abc, group def
trusted
global = /some/path
untrusted
. . global = /some/path
. . local = /another/path
# list of user names
# different user, different group, but we trust the user
trusted
global = /some/path
local = /another/path
untrusted
. . global = /some/path
. . local = /another/path
# list of group names
# different user, different group, but we trust the group
trusted
global = /some/path
local = /another/path
untrusted
. . global = /some/path
. . local = /another/path
# Can't figure out the name of the user running this process
# different user, different group
not trusting file .hg/hgrc from untrusted user abc, group def
trusted
global = /some/path
untrusted
. . global = /some/path
. . local = /another/path
# prints debug warnings
# different user, different group
not trusting file .hg/hgrc from untrusted user abc, group def
trusted
ignoring untrusted configuration option paths.local = /another/path
global = /some/path
untrusted
. . global = /some/path
. ignoring untrusted configuration option paths.local = /another/path
. local = /another/path
# report_untrusted enabled without debug hides warnings
# different user, different group
trusted
global = /some/path
untrusted
. . global = /some/path
. . local = /another/path
# report_untrusted enabled with debug shows warnings
# different user, different group
not trusting file .hg/hgrc from untrusted user abc, group def
trusted
ignoring untrusted configuration option paths.local = /another/path
global = /some/path
untrusted
. . global = /some/path
. ignoring untrusted configuration option paths.local = /another/path
. local = /another/path
# ui.readconfig sections
quux
# read trusted, untrusted, new ui, trusted
not trusting file foobar from untrusted user abc, group def
trusted:
ignoring untrusted configuration option foobar.baz = quux
None
untrusted:
quux
# error handling
# file doesn't exist
# same user, same group
# different user, different group
# parse error
# different user, different group
not trusting file .hg/hgrc from untrusted user abc, group def
ignored .hg/hgrc:1: foo
# same user, same group
config error at .hg/hgrc:1: foo
# access typed information
# different user, different group
not trusting file .hg/hgrc from untrusted user abc, group def
# suboptions, trusted and untrusted
(None, []) ('main', [('one', 'one'), ('two', 'two')])
# path, trusted and untrusted
None .hg/monty/python
# bool, trusted and untrusted
False True
# int, trusted and untrusted
0 42
# bytes, trusted and untrusted
0 84934656
# list, trusted and untrusted
[] ['spam', 'ham', 'eggs']