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strmap: enable allocations to come from a mem_pool

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For heavy users of strmaps, allowing the keys and entries to be
allocated from a memory pool can provide significant overhead savings.
Add an option to strmap_init_with_options() to specify a memory pool.

Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Elijah Newren
2020-11-11 20:02:18 +00:00
committed by Junio C Hamano
parent 1201eb628a
commit a208ec1f0b
2 changed files with 30 additions and 12 deletions
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11
strmap.h
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@ -3,8 +3,10 @@
#include "hashmap.h"
struct mem_pool;
struct strmap {
struct hashmap map;
struct mem_pool *pool;
unsigned int strdup_strings:1;
};
@ -37,9 +39,10 @@ void strmap_init(struct strmap *map);
/*
* Same as strmap_init, but for those who want to control the memory management
* carefully instead of using the default of strdup_strings=1.
* carefully instead of using the default of strdup_strings=1 and pool=NULL.
*/
void strmap_init_with_options(struct strmap *map,
struct mem_pool *pool,
int strdup_strings);
/*
@ -137,9 +140,10 @@ static inline void strintmap_init(struct strintmap *map, int default_value)
static inline void strintmap_init_with_options(struct strintmap *map,
int default_value,
struct mem_pool *pool,
int strdup_strings)
{
strmap_init_with_options(&map->map, strdup_strings);
strmap_init_with_options(&map->map, pool, strdup_strings);
map->default_value = default_value;
}
@ -221,9 +225,10 @@ static inline void strset_init(struct strset *set)
}
static inline void strset_init_with_options(struct strset *set,
struct mem_pool *pool,
int strdup_strings)
{
strmap_init_with_options(&set->map, strdup_strings);
strmap_init_with_options(&set->map, pool, strdup_strings);
}
static inline void strset_clear(struct strset *set)