Mercurial > hg
view mercurial/utils/memorytop.py @ 50393:f95ab2c53303
outgoing: fix common-heads computation from `missingroots` argument
When initializing a `outgoing` object, the `common set` can be defined explicitly (with the `commonheads` argument`) or implicitly (with the missingroots arguments).
It turns out the logic to compute `commonheads` from `missingroots` is buggy, as it does not consider the parents of enough changesets. Previously, it only considered parents of "missingroots` items, while it need to consider all parents of missing. Here is an example:
F
|\
C E
| |
B D
|/
A
If we use [E] as missing-roots, the missing set is [E, F], and the common-heads
are [C, D]. However you cannot only consider the parent of [E] to find them, as
[C] is not a parent of [E].
This already fix the bundle generated in one test, and it would prevent many
other to misbehave with future change from this series.
author | Pierre-Yves David <pierre-yves.david@octobus.net> |
---|---|
date | Fri, 10 Mar 2023 04:04:10 +0100 |
parents | 5b6c0af021da |
children | 1c5810ce737e |
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# memorytop requires Python 3.4 # # Usage: set PYTHONTRACEMALLOC=n in the environment of the hg invocation, # where n>= is the number of frames to show in the backtrace. Put calls to # memorytop in strategic places to show the current memory use by allocation # site. import gc import tracemalloc def memorytop(limit=10): gc.collect() snapshot = tracemalloc.take_snapshot() snapshot = snapshot.filter_traces( ( tracemalloc.Filter(False, "<frozen importlib._bootstrap>"), tracemalloc.Filter(False, "<frozen importlib._bootstrap_external>"), tracemalloc.Filter(False, "<unknown>"), ) ) stats = snapshot.statistics('traceback') total = sum(stat.size for stat in stats) print("\nTotal allocated size: %.1f KiB\n" % (total / 1024)) print("Lines with the biggest net allocations") for index, stat in enumerate(stats[:limit], 1): print( "#%d: %d objects using %.1f KiB" % (index, stat.count, stat.size / 1024) ) for line in stat.traceback.format(most_recent_first=True): print(' ', line) other = stats[limit:] if other: size = sum(stat.size for stat in other) count = sum(stat.count for stat in other) print( "%s other: %d objects using %.1f KiB" % (len(other), count, size / 1024) ) print()