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smartset: split generatorset classes to avoid cycle...
smartset: split generatorset classes to avoid cycle I uncovered a cycle manifesting in a memory leak by running `hgperfrevset '::tip'`. The cycle was due to generatorset.__init__ assigning a bound method to self.__contains__. Internet sleuthing revealed that assigning a bound method to an instance attribute always creates a cycle. This commit creates two new variants of generatorset for the special cases of ascending and descending generators. The special implementations of __contains__ have been extracted to these classes where they are defined as __contains__. generatorset now implements __new__ and changes the spawned type to one of the new classes if needed. Differential Revision: https://phab.mercurial-scm.org/D1780
Pulkit Goyal - - Load All Authors

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dumprevlog
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/ contrib / dumprevlog
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#!/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,
util,
)
for fp in (sys.stdin, sys.stdout, sys.stderr):
util.setbinary(fp)
for f in sys.argv[1:]:
binopen = lambda fn: open(fn, 'rb')
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-")