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
#!/usr/bin/env python
# Dump revlogs as raw data stream
# $ find .hg/store/ -name "*.i" | xargs dumprevlog > repo.dump
from __future__ import absolute_import, print_function
import sys
from mercurial import (
node,
revlog,
)
from mercurial.utils import (
procutil,
)
for fp in (sys.stdin, sys.stdout, sys.stderr):
procutil.setbinary(fp)
def binopen(path, mode='rb'):
if 'b' not in mode:
mode = mode + 'b'
return open(path, mode)
for f in sys.argv[1:]:
r = revlog.revlog(binopen, f)
print("file:", f)
for i in r:
n = r.node(i)
p = r.parents(n)
d = r.revision(n)
print("node:", node.hex(n))
print("linkrev:", r.linkrev(i))
print("parents:", node.hex(p[0]), node.hex(p[1]))
print("length:", len(d))
print("-start-")
print(d)
print("-end-")