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-rw-r--r--include/hashtab.h10
1 files changed, 10 insertions, 0 deletions
diff --git a/include/hashtab.h b/include/hashtab.h
index c110ac5..a577c5e 100644
--- a/include/hashtab.h
+++ b/include/hashtab.h
@@ -98,6 +98,10 @@ struct htab
/* The following member is used for debugging. Its value is number
of collisions fixed for time of work with the hash table. */
unsigned int collisions;
+
+ /* This is non-zero if we are allowed to return NULL for function calls
+ that allocate memory. */
+ int return_allocation_failure;
};
typedef struct htab *htab_t;
@@ -109,6 +113,12 @@ enum insert_option {NO_INSERT, INSERT};
extern htab_t htab_create PARAMS ((size_t, htab_hash,
htab_eq, htab_del));
+
+/* This function is like htab_create, but may return NULL if memory
+ allocation fails, and also signals that htab_find_slot_with_hash and
+ htab_find_slot are allowed to return NULL when inserting. */
+extern htab_t htab_try_create PARAMS ((size_t, htab_hash,
+ htab_eq, htab_del));
extern void htab_delete PARAMS ((htab_t));
extern void htab_empty PARAMS ((htab_t));