#ifndef _HASH_TABLE_H
#define _HASH_TABLE_H
+#include <stdlib.h>
#include <inttypes.h>
#include <stdbool.h>
-
-#include "main/compiler.h"
+#include "c99_compat.h"
+#include "macros.h"
#ifdef __cplusplus
extern "C" {
struct hash_table {
struct hash_entry *table;
+ uint32_t (*key_hash_function)(const void *key);
bool (*key_equals_function)(const void *a, const void *b);
const void *deleted_key;
uint32_t size;
struct hash_table *
_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,
+ void (*delete_function)(struct hash_entry *entry));
void _mesa_hash_table_set_deleted_key(struct hash_table *ht,
const void *deleted_key);
+static inline uint32_t _mesa_hash_table_num_entries(struct hash_table *ht)
+{
+ return ht->entries;
+}
+
+struct hash_entry *
+_mesa_hash_table_insert(struct hash_table *ht, const void *key, void *data);
struct hash_entry *
-_mesa_hash_table_insert(struct hash_table *ht, uint32_t hash,
- const void *key, void *data);
+_mesa_hash_table_insert_pre_hashed(struct hash_table *ht, uint32_t hash,
+ const void *key, void *data);
struct hash_entry *
-_mesa_hash_table_search(struct hash_table *ht, uint32_t hash,
- const void *key);
+_mesa_hash_table_search(struct hash_table *ht, const void *key);
+struct hash_entry *
+_mesa_hash_table_search_pre_hashed(struct hash_table *ht, uint32_t hash,
+ const void *key);
void _mesa_hash_table_remove(struct hash_table *ht,
struct hash_entry *entry);
bool (*predicate)(struct hash_entry *entry));
uint32_t _mesa_hash_data(const void *data, size_t size);
-uint32_t _mesa_hash_string(const char *key);
+uint32_t _mesa_hash_string(const void *key);
bool _mesa_key_string_equal(const void *a, const void *b);
bool _mesa_key_pointer_equal(const void *a, const void *b);
+static inline uint32_t _mesa_key_hash_string(const void *key)
+{
+ return _mesa_hash_string((const char *)key);
+}
+
static inline uint32_t _mesa_hash_pointer(const void *pointer)
{
- return _mesa_hash_data(&pointer, sizeof(pointer));
+ uintptr_t num = (uintptr_t) pointer;
+ return (uint32_t) ((num >> 2) ^ (num >> 6) ^ (num >> 10) ^ (num >> 14));
}
+enum {
+ _mesa_fnv32_1a_offset_bias = 2166136261u,
+};
+
+static inline uint32_t
+_mesa_fnv32_1a_accumulate_block(uint32_t hash, const void *data, size_t size)
+{
+ const uint8_t *bytes = (const uint8_t *)data;
+
+ while (size-- != 0) {
+ hash ^= *bytes;
+ hash = hash * 0x01000193;
+ bytes++;
+ }
+
+ return hash;
+}
+
+#define _mesa_fnv32_1a_accumulate(hash, expr) \
+ _mesa_fnv32_1a_accumulate_block(hash, &(expr), sizeof(expr))
+
/**
* This foreach function is safe against deletion (which just replaces
* an entry's data with the deleted marker), but not against insertion
entry != NULL; \
entry = _mesa_hash_table_next_entry(ht, entry))
+static inline void
+hash_table_call_foreach(struct hash_table *ht,
+ void (*callback)(const void *key,
+ void *data,
+ void *closure),
+ void *closure)
+{
+ struct hash_entry *entry;
+
+ hash_table_foreach(ht, entry)
+ callback(entry->key, entry->data, closure);
+}
+
+/**
+ * Hash table wrapper which supports 64-bit keys.
+ */
+struct hash_table_u64 {
+ struct hash_table *table;
+ void *deleted_key_data;
+};
+
+struct hash_table_u64 *
+_mesa_hash_table_u64_create(void *mem_ctx);
+
+void
+_mesa_hash_table_u64_destroy(struct hash_table_u64 *ht,
+ void (*delete_function)(struct hash_entry *entry));
+
+void
+_mesa_hash_table_u64_insert(struct hash_table_u64 *ht, uint64_t key,
+ void *data);
+
+void *
+_mesa_hash_table_u64_search(struct hash_table_u64 *ht, uint64_t key);
+
+void
+_mesa_hash_table_u64_remove(struct hash_table_u64 *ht, uint64_t key);
+
#ifdef __cplusplus
} /* extern C */
#endif