diff options
Diffstat (limited to 'gcc/hash-traits.h')
| -rw-r--r-- | gcc/hash-traits.h | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/gcc/hash-traits.h b/gcc/hash-traits.h index c580de9ddf9..8f97646f3e1 100644 --- a/gcc/hash-traits.h +++ b/gcc/hash-traits.h @@ -121,6 +121,27 @@ pointer_hash <Type>::is_empty (Type *e) return e == NULL; } +/* Hasher for "const char *" strings, using string rather than pointer + equality. */ + +struct string_hash : pointer_hash <const char> +{ + static inline hashval_t hash (const char *); + static inline bool equal (const char *, const char *); +}; + +inline hashval_t +string_hash::hash (const char *id) +{ + return htab_hash_string (id); +} + +inline bool +string_hash::equal (const char *id1, const char *id2) +{ + return strcmp (id1, id2) == 0; +} + /* Remover and marker for entries in gc memory. */ template<typename T> @@ -190,6 +211,11 @@ struct ggc_ptr_hash : pointer_hash <T>, ggc_remove <T *> {}; template <typename T> struct ggc_cache_ptr_hash : pointer_hash <T>, ggc_cache_remove <T *> {}; +/* Traits for string elements that should not be freed when an element + is deleted. */ + +struct nofree_string_hash : string_hash, typed_noop_remove <const char *> {}; + template <typename T> struct default_hash_traits; template <typename T> |