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author | Michal Schmidt <mschmidt@redhat.com> | 2014-10-14 23:35:24 +0200 |
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committer | Michal Schmidt <mschmidt@redhat.com> | 2014-10-23 17:38:02 +0200 |
commit | e4c691b59db60ef2e6d8e64766d6ae02cd0dd457 (patch) | |
tree | f6af93bdc6599e642099d3f9fc3a3b3e4ca2aee1 /src/shared/blkid-util.h | |
parent | 9700d6980f7c212b10a69399e6430b82a6f45587 (diff) |
hashmap: introduce hashmap_reserve()
With the current hashmap implementation that uses chaining, placing a
reservation can serve two purposes:
- To optimize putting of entries if the number of entries to put is
known. The reservation allocates buckets, so later resizing can be
avoided.
- To avoid having very long bucket chains after using
hashmap_move(_one).
In an alternative hashmap implementation it will serve an additional
purpose:
- To guarantee a subsequent hashmap_move(_one) will not fail with
-ENOMEM (this never happens in the current implementation).
Diffstat (limited to 'src/shared/blkid-util.h')
0 files changed, 0 insertions, 0 deletions