1 files changed, 40 insertions, 0 deletions
diff --git a/rts/Hash.h b/rts/Hash.h
new file mode 100644
index 0000000000..ad55953da4
--- /dev/null
+++ b/rts/Hash.h
@@ -0,0 +1,40 @@
+/*-----------------------------------------------------------------------------
+ *
+ * (c) The GHC Team, 1999
+ *
+ * Prototypes for Hash.c
+ *
+ * -------------------------------------------------------------------------- */
+
+#ifndef HASH_H
+#define HASH_H
+
+typedef struct hashtable HashTable; /* abstract */
+
+/* Hash table access where the keys are StgWords */
+HashTable * allocHashTable    ( void );
+void *      lookupHashTable ( HashTable *table, StgWord key );
+void        insertHashTable ( HashTable *table, StgWord key, void *data );
+void *      removeHashTable ( HashTable *table, StgWord key, void *data );
+
+/* Hash table access where the keys are C strings (the strings are
+ * assumed to be allocated by the caller, and mustn't be deallocated
+ * until the corresponding hash table entry has been removed).
+ */
+HashTable * allocStrHashTable ( void );
+
+#define lookupStrHashTable(table, key)  \
+   (lookupHashTable(table, (StgWord)key))
+
+#define insertStrHashTable(table, key, data)  \
+   (insertHashTable(table, (StgWord)key, data))
+
+#define removeStrHashTable(table, key, data) \
+   (removeHashTable(table, (StgWord)key, data))
+
+/* Freeing hash tables 
+ */
+void freeHashTable ( HashTable *table, void (*freeDataFun)(void *) );
+
+#endif /* HASH_H */
+