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-rw-r--r--mesalib/src/mesa/program/hash_table.c5
-rw-r--r--mesalib/src/mesa/program/hash_table.h17
2 files changed, 16 insertions, 6 deletions
diff --git a/mesalib/src/mesa/program/hash_table.c b/mesalib/src/mesa/program/hash_table.c
index dc8563a33..7dabadc50 100644
--- a/mesalib/src/mesa/program/hash_table.c
+++ b/mesalib/src/mesa/program/hash_table.c
@@ -149,7 +149,7 @@ hash_table_insert(struct hash_table *ht, void *data, const void *key)
insert_at_head(& ht->buckets[bucket], & node->link);
}
-void
+bool
hash_table_replace(struct hash_table *ht, void *data, const void *key)
{
const unsigned hash_value = (*ht->hash)(key);
@@ -162,7 +162,7 @@ hash_table_replace(struct hash_table *ht, void *data, const void *key)
if ((*ht->compare)(hn->key, key) == 0) {
hn->data = data;
- return;
+ return true;
}
}
@@ -172,6 +172,7 @@ hash_table_replace(struct hash_table *ht, void *data, const void *key)
hn->key = key;
insert_at_head(& ht->buckets[bucket], & hn->link);
+ return false;
}
void
diff --git a/mesalib/src/mesa/program/hash_table.h b/mesalib/src/mesa/program/hash_table.h
index e1c234ea4..b814497a6 100644
--- a/mesalib/src/mesa/program/hash_table.h
+++ b/mesalib/src/mesa/program/hash_table.h
@@ -32,6 +32,7 @@
#define HASH_TABLE_H
#include <string.h>
+#include <stdbool.h>
#include <stdlib.h>
#include <stdint.h>
#include <limits.h>
@@ -115,6 +116,10 @@ extern void hash_table_insert(struct hash_table *ht, void *data,
/**
* Add an element to a hash table with replacement
*
+ * \return
+ * 1 if it did replace the the value (in which case the old key is kept), 0 if
+ * it did not replace the value (in which case the new key is kept).
+ *
* \warning
* If \c key is already in the hash table, \c data will \b replace the most
* recently inserted \c data (see the warning in \c hash_table_insert) for
@@ -122,7 +127,7 @@ extern void hash_table_insert(struct hash_table *ht, void *data,
*
* \sa hash_table_insert
*/
-extern void hash_table_replace(struct hash_table *ht, void *data,
+extern bool hash_table_replace(struct hash_table *ht, void *data,
const void *key);
/**
@@ -220,6 +225,7 @@ public:
*/
void clear()
{
+ hash_table_call_foreach(this->ht, delete_key, NULL);
hash_table_clear(this->ht);
}
@@ -259,9 +265,12 @@ public:
* because UINT_MAX+1 = 0.
*/
assert(value != UINT_MAX);
- hash_table_replace(this->ht,
- (void *) (intptr_t) (value + 1),
- strdup(key));
+ char *dup_key = strdup(key);
+ bool result = hash_table_replace(this->ht,
+ (void *) (intptr_t) (value + 1),
+ dup_key);
+ if (result)
+ free(dup_key);
}
private: