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hash_table: allow constant key

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This commit is contained in:
Steffen Vogel 2018-08-23 13:12:03 +02:00
parent ceeff5e9bb
commit bf0b8f949e
2 changed files with 8 additions and 8 deletions
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8
common/include/villas/hash_table.h
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@ -32,7 +32,7 @@ extern "C" {
#endif
struct hash_table_entry {
void *key;
const void *key;
void *data;
struct hash_table_entry *next;
@ -62,20 +62,20 @@ int hash_table_destroy(struct hash_table *ht, dtor_cb_t dtor, bool release);
/** Insert a new key/value pair into the hash table.
*
*/
int hash_table_insert(struct hash_table *ht, void *key, void *data);
int hash_table_insert(struct hash_table *ht, const void *key, void *data);
/** Delete a key from the hash table.
*
*
*/
int hash_table_delete(struct hash_table *ht, void *key);
int hash_table_delete(struct hash_table *ht, const void *key);
/** Perform a lookup in the hash table.
*
* @retval != NULL The value for the given key.
* @retval NULL The given key is not stored in the hash table.
*/
void * hash_table_lookup(struct hash_table *ht, void *key);
void * hash_table_lookup(struct hash_table *ht, const void *key);
/** Dump the contents of the hash table in a human readable format to stdout. */
void hash_table_dump(struct hash_table *ht);

8
common/lib/hash_table.c
View file

@ -25,7 +25,7 @@
#include <villas/utils.h>
#include <villas/hash_table.h>
static int hash_table_hash(struct hash_table *ht, void *key)
static int hash_table_hash(struct hash_table *ht, const void *key)
{
uintptr_t ptr = (uintptr_t) key;
@ -89,7 +89,7 @@ int hash_table_destroy(struct hash_table *ht, dtor_cb_t dtor, bool release)
return 0;
}
int hash_table_insert(struct hash_table *ht, void *key, void *data)
int hash_table_insert(struct hash_table *ht, const void *key, void *data)
{
int ret, ikey = hash_table_hash(ht, key);
struct hash_table_entry *hte, *cur;
@ -130,7 +130,7 @@ int hash_table_insert(struct hash_table *ht, void *key, void *data)
#include <stdio.h>
int hash_table_delete(struct hash_table *ht, void *key)
int hash_table_delete(struct hash_table *ht, const void *key)
{
int ret, ikey = hash_table_hash(ht, key);
struct hash_table_entry *cur, *prev;
@ -163,7 +163,7 @@ int hash_table_delete(struct hash_table *ht, void *key)
return ret;
}
void * hash_table_lookup(struct hash_table *ht, void *key)
void * hash_table_lookup(struct hash_table *ht, const void *key)
{
int ikey = hash_table_hash(ht, key);
struct hash_table_entry *hte;