/* dict - a generic dictionary, variation over hash table */
-/* Copyright (c) 2004-2011. The SimGrid Team.
+/* Copyright (c) 2004-2013. The SimGrid Team.
* All rights reserved. */
/* This program is free software; you can redistribute it and/or modify it
* under the terms of the license (GNU LGPL) which comes with this package. */
-#define DJB2_HASH_FUNCTION
-//#define FNV_HASH_FUNCTION
-
#include <string.h>
#include <stdio.h>
#include "xbt/ex.h"
#include "xbt/log.h"
#include "xbt/mallocator.h"
#include "xbt_modinter.h"
+#include "xbt/str.h"
#include "dict_private.h"
XBT_LOG_NEW_DEFAULT_SUBCATEGORY(xbt_dict, xbt,
return (dict ? (unsigned int) dict->count : (unsigned int) 0);
}
-/**
- * Returns the hash code of a string.
- */
-static XBT_INLINE unsigned int xbt_dict_hash_ext(const char *str,
- int str_len)
-{
-
-
-#ifdef DJB2_HASH_FUNCTION
- /* fast implementation of djb2 algorithm */
- int c;
- register unsigned int hash = 5381;
-
- while (str_len--) {
- c = *str++;
- hash = ((hash << 5) + hash) + c; /* hash * 33 + c */
- }
-# elif defined(FNV_HASH_FUNCTION)
- register unsigned int hash = 0x811c9dc5;
- unsigned char *bp = (unsigned char *) str; /* start of buffer */
- unsigned char *be = bp + str_len; /* beyond end of buffer */
-
- while (bp < be) {
- /* multiply by the 32 bit FNV magic prime mod 2^32 */
- hash +=
- (hash << 1) + (hash << 4) + (hash << 7) + (hash << 8) +
- (hash << 24);
-
- /* xor the bottom with the current octet */
- hash ^= (unsigned int) *bp++;
- }
-
-# else
- register unsigned int hash = 0;
-
- while (str_len--) {
- hash += (*str) * (*str);
- str++;
- }
-#endif
-
- return hash;
-}
-
-static XBT_INLINE unsigned int xbt_dict_hash(const char *str)
-{
-#ifdef DJB2_HASH_FUNCTION
- /* fast implementation of djb2 algorithm */
- int c;
- register unsigned int hash = 5381;
-
- while ((c = *str++)) {
- hash = ((hash << 5) + hash) + c; /* hash * 33 + c */
- }
-
-# elif defined(FNV_HASH_FUNCTION)
- register unsigned int hash = 0x811c9dc5;
-
- while (*str) {
- /* multiply by the 32 bit FNV magic prime mod 2^32 */
- hash +=
- (hash << 1) + (hash << 4) + (hash << 7) + (hash << 8) +
- (hash << 24);
-
- /* xor the bottom with the current byte */
- hash ^= (unsigned int) *str++;
- }
-
-# else
- register unsigned int hash = 0;
-
- while (*str) {
- hash += (*str) * (*str);
- str++;
- }
-#endif
- return hash;
-}
-
/* Expend the size of the dict */
static void xbt_dict_rehash(xbt_dict_t dict)
{
void *data, void_f_pvoid_t free_ctn)
{
- unsigned int hash_code = xbt_dict_hash_ext(key, key_len);
+ unsigned int hash_code = xbt_str_hash_ext(key, key_len);
xbt_dictelm_t current, previous = NULL;
xbt_assert(dict);
{
- unsigned int hash_code = xbt_dict_hash_ext(key, key_len);
+ unsigned int hash_code = xbt_str_hash_ext(key, key_len);
xbt_dictelm_t current;
xbt_assert(dict);
int key_len)
{
- unsigned int hash_code = xbt_dict_hash_ext(key, key_len);
+ unsigned int hash_code = xbt_str_hash_ext(key, key_len);
xbt_dictelm_t current;
xbt_assert(dict);
*/
XBT_INLINE void *xbt_dict_get(xbt_dict_t dict, const char *key)
{
-
- unsigned int hash_code = xbt_dict_hash(key);
- xbt_dictelm_t current;
-
- xbt_assert(dict);
-
- current = dict->table[hash_code & dict->table_size];
- while (current != NULL
- && (hash_code != current->hash_code || strcmp(key, current->key)))
- current = current->next;
+ return xbt_dict_get_elm(dict, key)->content;
+}
+/**
+ * \brief Retrieve element from the dict (null-terminated key)
+ *
+ * \param dict the dealer of data
+ * \param key the key to find data
+ * \return the s_xbt_dictelm_t that we are looking for
+ *
+ * Search the given \a key. Throws not_found_error when not found.
+ * Check xbt_dict_get_or_null() for a version returning NULL without exception when
+ * not found.
+ */
+XBT_INLINE xbt_dictelm_t xbt_dict_get_elm(xbt_dict_t dict, const char *key)
+{
+ xbt_dictelm_t current = xbt_dict_get_elm_or_null(dict, key);
if (current == NULL)
THROWF(not_found_error, 0, "key %s not found", key);
- return current->content;
+ return current;
}
/**
*/
XBT_INLINE void *xbt_dict_get_or_null(xbt_dict_t dict, const char *key)
{
- unsigned int hash_code = xbt_dict_hash(key);
+ xbt_dictelm_t current = xbt_dict_get_elm_or_null(dict, key);
+
+ if (current == NULL)
+ return NULL;
+
+ return current->content;
+}
+/**
+ * \brief like xbt_dict_get_elm(), but returning NULL when not found
+ */
+XBT_INLINE xbt_dictelm_t xbt_dict_get_elm_or_null(xbt_dict_t dict, const char *key)
+{
+ unsigned int hash_code = xbt_str_hash(key);
xbt_dictelm_t current;
xbt_assert(dict);
while (current != NULL &&
(hash_code != current->hash_code || strcmp(key, current->key)))
current = current->next;
-
- if (current == NULL)
- return NULL;
-
- return current->content;
+ return current;
}
{
- unsigned int hash_code = xbt_dict_hash_ext(key, key_len);
+ unsigned int hash_code = xbt_str_hash_ext(key, key_len);
xbt_dictelm_t current, previous = NULL;
xbt_assert(dict);
*/
void xbt_dict_preinit(void)
{
- if (dict_elm_mallocator != NULL) {
- /* Already created. I guess we want to switch to MC mode, so kill the previously created mallocator */
- xbt_mallocator_free(dict_elm_mallocator);
- xbt_mallocator_free(dict_het_elm_mallocator);
- }
-
dict_elm_mallocator = xbt_mallocator_new(256,
dict_elm_mallocator_new_f,
dict_elm_mallocator_free_f,
#include "xbt/ex.h"
#include "portable.h"
-XBT_LOG_EXTERNAL_CATEGORY(xbt_dict);
-XBT_LOG_DEFAULT_CATEGORY(xbt_dict);
+XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(xbt_dict);
XBT_TEST_SUITE("dict", "Dict data container");
-static void print_str(void *str)
-{
- printf("%s", (char *) PRINTF_STR(str));
-}
-
static void debuged_add_ext(xbt_dict_t head, const char *key,
const char *data_to_fill, void_f_pvoid_t free_f)
{
xbt_test_add("Search %s", key);
found = xbt_dict_get(head, key);
xbt_test_log("Found %s", (char *) found);
- if (data)
+ if (data) {
xbt_test_assert(found,
- "data do not match expectations: found NULL while searching for %s",
- data);
- if (found)
- xbt_test_assert(!strcmp((char *) data, found),
- "data do not match expectations: found %s while searching for %s",
- (char *) found, data);
+ "data do not match expectations: found NULL while searching for %s",
+ data);
+ if (found)
+ xbt_test_assert(!strcmp((char *) data, found),
+ "data do not match expectations: found %s while searching for %s",
+ (char *) found, data);
+ } else {
+ xbt_test_assert(!found,
+ "data do not match expectations: found %s while searching for NULL",
+ found);
+ }
}
static void search(xbt_dict_t head, const char *key)
