Jeff Hostetler 642d8280a4 string-list: use ALLOC_GROW macro when reallocing string_list ...

Use ALLOC_GROW() macro when reallocing a string_list array
rather than simply increasing it by 32.  This is a performance
optimization.

During status on a very large repo and there are many changes,
a significant percentage of the total run time was spent
reallocing the wt_status.changes array.

This change decreased the time in wt_status_collect_changes_worktree()
from 125 seconds to 45 seconds on my very large repository.

Signed-off-by: Jeff Hostetler <jeffhost@microsoft.com>

2016-12-12 12:49:46 -05:00

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