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hashmap: introduce hash_ops to make struct Hashmap smaller

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It is redundant to store 'hash' and 'compare' function pointers in
struct Hashmap separately. The functions always comprise a pair.
Store a single pointer to struct hash_ops instead.

systemd keeps hundreds of hashmaps, so this saves a little bit of
memory.
This commit is contained in:
Michal Schmidt
2014-09-15 16:08:50 +02:00
parent f44541bc93
commit d5099efc47
82 changed files with 278 additions and 226 deletions
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src/machine/machined.c
+3 -3
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@@ -44,9 +44,9 @@ Manager *manager_new(void) {
if (!m)
return NULL;
m->machines = hashmap_new(string_hash_func, string_compare_func);
m->machine_units = hashmap_new(string_hash_func, string_compare_func);
m->machine_leaders = hashmap_new(trivial_hash_func, trivial_compare_func);
m->machines = hashmap_new(&string_hash_ops);
m->machine_units = hashmap_new(&string_hash_ops);
m->machine_leaders = hashmap_new(NULL);
if (!m->machines || !m->machine_units || !m->machine_leaders) {
manager_free(m);