thodg/libgit2/src

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  • Hash : 9679df57
    Author : lhchavez
    Date : 2020-02-08T20:47:24 

    mwindow: set limit on number of open files

There are some cases in which repositories accrue a large number of
packfiles. The existing mwindow limit applies only to the total size of
mmap'd files, not on their number. This leads to a situation in which
having lots of small packfiles could exhaust the allowed number of open
files, particularly on macOS, where the default ulimit is very low
(256).

This change adds a new configuration parameter
(GIT_OPT_SET_MWINDOW_FILE_LIMIT) that sets the maximum number of open
packfiles, with a default of 128. This is low enough so that even macOS
users should not hit it during normal use.

Based on PR #5386, originally written by @josharian.

Fixes: #2758

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