X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=lib%2Fhash.h;h=9994f5f6656048423e1b09934e0118ca5a373672;hb=7ef6c64e210ac0979d7e8ac69bc5b5208c2405ab;hp=9f694be5551383af58996bfc3ad43046fe84649e;hpb=5f5a2a49aa08210d09e31c6d3c77f12b4c93d149;p=gnulib.git

diff --git a/lib/hash.h b/lib/hash.h
index 9f694be55..9994f5f66 100644
--- a/lib/hash.h
+++ b/lib/hash.h
@@ -1,5 +1,5 @@
 /* hash - hashing table processing.
-   Copyright (C) 1998-1999, 2001, 2003, 2009-2011 Free Software Foundation,
+   Copyright (C) 1998-1999, 2001, 2003, 2009-2014 Free Software Foundation,
    Inc.
    Written by Jim Meyering <meyering@ascend.com>, 1998.
 
@@ -19,7 +19,7 @@
 /* A generic hash table package.  */
 
 /* Make sure USE_OBSTACK is defined to 1 if you want the allocator to use
-   obstacks instead of malloc, and recompile `hash.c' with same setting.  */
+   obstacks instead of malloc, and recompile 'hash.c' with same setting.  */
 
 #ifndef HASH_H_
 # define HASH_H_
@@ -35,6 +35,16 @@
 #  define _GL_ATTRIBUTE_WUR /* empty */
 # endif
 
+# ifndef _GL_ATTRIBUTE_DEPRECATED
+/* The __attribute__((__deprecated__)) feature
+   is available in gcc versions 3.1 and newer.  */
+#  if __GNUC__ < 3 || (__GNUC__ == 3 && __GNUC_MINOR__ < 1)
+#   define _GL_ATTRIBUTE_DEPRECATED /* empty */
+#  else
+#   define _GL_ATTRIBUTE_DEPRECATED __attribute__ ((__deprecated__))
+#  endif
+# endif
+
 typedef size_t (*Hash_hasher) (const void *, size_t);
 typedef bool (*Hash_comparator) (const void *, const void *);
 typedef void (*Hash_data_freer) (void *);
@@ -42,8 +52,8 @@ typedef bool (*Hash_processor) (void *, void *);
 
 struct hash_tuning
   {
-    /* This structure is mainly used for `hash_initialize', see the block
-       documentation of `hash_reset_tuning' for more complete comments.  */
+    /* This structure is mainly used for 'hash_initialize', see the block
+       documentation of 'hash_reset_tuning' for more complete comments.  */
 
     float shrink_threshold;     /* ratio of used buckets to trigger a shrink */
     float shrink_factor;        /* ratio of new smaller size to original size */
@@ -59,22 +69,22 @@ struct hash_table;
 typedef struct hash_table Hash_table;
 
 /* Information and lookup.  */
-size_t hash_get_n_buckets (const Hash_table *);
-size_t hash_get_n_buckets_used (const Hash_table *);
-size_t hash_get_n_entries (const Hash_table *);
-size_t hash_get_max_bucket_length (const Hash_table *);
-bool hash_table_ok (const Hash_table *);
+size_t hash_get_n_buckets (const Hash_table *) _GL_ATTRIBUTE_PURE;
+size_t hash_get_n_buckets_used (const Hash_table *) _GL_ATTRIBUTE_PURE;
+size_t hash_get_n_entries (const Hash_table *) _GL_ATTRIBUTE_PURE;
+size_t hash_get_max_bucket_length (const Hash_table *) _GL_ATTRIBUTE_PURE;
+bool hash_table_ok (const Hash_table *) _GL_ATTRIBUTE_PURE;
 void hash_print_statistics (const Hash_table *, FILE *);
 void *hash_lookup (const Hash_table *, const void *);
 
 /* Walking.  */
-void *hash_get_first (const Hash_table *);
+void *hash_get_first (const Hash_table *) _GL_ATTRIBUTE_PURE;
 void *hash_get_next (const Hash_table *, const void *);
 size_t hash_get_entries (const Hash_table *, void **, size_t);
 size_t hash_do_for_each (const Hash_table *, Hash_processor, void *);
 
 /* Allocation and clean-up.  */
-size_t hash_string (const char *, size_t);
+size_t hash_string (const char *, size_t) _GL_ATTRIBUTE_PURE;
 void hash_reset_tuning (Hash_tuning *);
 Hash_table *hash_initialize (size_t, const Hash_tuning *,
                              Hash_hasher, Hash_comparator,
@@ -85,8 +95,13 @@ void hash_free (Hash_table *);
 /* Insertion and deletion.  */
 bool hash_rehash (Hash_table *, size_t) _GL_ATTRIBUTE_WUR;
 void *hash_insert (Hash_table *, const void *) _GL_ATTRIBUTE_WUR;
-int hash_insert0 (Hash_table *table, const void *entry,
-                  const void **matched_ent);
+
+/* Deprecate this interface.  It has been renamed to hash_insert_if_absent.  */
+int hash_insert0 (Hash_table *table, /* FIXME: remove in 2013 */
+                  const void *entry,
+                  const void **matched_ent) _GL_ATTRIBUTE_DEPRECATED;
+int hash_insert_if_absent (Hash_table *table, const void *entry,
+                           const void **matched_ent);
 void *hash_delete (Hash_table *, const void *);
 
 #endif