From 6baaf4291b7ee83a50038a215412ab1de75b0f32 Mon Sep 17 00:00:00 2001 From: Thomas Helland Date: Mon, 9 Jan 2017 23:01:50 +0100 Subject: [PATCH] util: Implement a hash table cloning function V2: Don't rzalloc; we are about to rewrite the whole thing (Vladislav) Reviewed-by: Eric Anholt Reviewed-by: Emil Velikov --- src/util/hash_table.c | 22 ++++++++++++++++++++++ src/util/hash_table.h | 2 ++ 2 files changed, 24 insertions(+) diff --git a/src/util/hash_table.c b/src/util/hash_table.c index b7421a0144c..f8d5d0f88aa 100644 --- a/src/util/hash_table.c +++ b/src/util/hash_table.c @@ -141,6 +141,28 @@ _mesa_hash_table_create(void *mem_ctx, return ht; } +struct hash_table * +_mesa_hash_table_clone(struct hash_table *src, void *dst_mem_ctx) +{ + struct hash_table *ht; + + ht = ralloc(dst_mem_ctx, struct hash_table); + if (ht == NULL) + return NULL; + + memcpy(ht, src, sizeof(struct hash_table)); + + ht->table = ralloc_array(ht, struct hash_entry, ht->size); + if (ht->table == NULL) { + ralloc_free(ht); + return NULL; + } + + memcpy(ht->table, src->table, ht->size * sizeof(struct hash_entry)); + + return ht; +} + /** * Frees the given hash table. * diff --git a/src/util/hash_table.h b/src/util/hash_table.h index d3e0758b265..3846dad4b4a 100644 --- a/src/util/hash_table.h +++ b/src/util/hash_table.h @@ -62,6 +62,8 @@ _mesa_hash_table_create(void *mem_ctx, uint32_t (*key_hash_function)(const void *key), bool (*key_equals_function)(const void *a, const void *b)); +struct hash_table * +_mesa_hash_table_clone(struct hash_table *src, void *dst_mem_ctx); void _mesa_hash_table_destroy(struct hash_table *ht, void (*delete_function)(struct hash_entry *entry)); void _mesa_hash_table_clear(struct hash_table *ht, -- 2.30.2