Remove arbitrary limit of 2**31 entries in hash tables.

[bpt/emacs.git] / src / ChangeLog

diff --git a/src/ChangeLog b/src/ChangeLog
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@@ -1,3 +1,52 @@
+2011-05-31  Paul Eggert  <eggert@cs.ucla.edu>
+
+       Remove arbitrary limit of 2**31 entries in hash tables.
+       * category.c (hash_get_category_set): Use 'EMACS_UINT' and 'EMACS_INT'
+       for hashes and hash indexes, instead of 'unsigned' and 'int'.
+       * ccl.c (ccl_driver): Likewise.
+       * charset.c (Fdefine_charset_internal): Likewise.
+       * charset.h (struct charset.hash_index): Likewise.
+       * composite.c (get_composition_id, gstring_lookup_cache):
+       (composition_gstring_put_cache): Likewise.
+       * composite.h (struct composition.hash_index): Likewise.
+       * dispextern.h (struct image.hash): Likewise.
+       * fns.c (next_almost_prime, larger_vector, cmpfn_eql):
+       (cmpfn_equal, cmpfn_user_defined, hashfn_eq, hashfn_eql):
+       (hashfn_equal, hashfn_user_defined, make_hash_table):
+       (maybe_resize_hash_table, hash_lookup, hash_put):
+       (hash_remove_from_table, hash_clear, sweep_weak_table, SXHASH_COMBINE):
+       (sxhash_string, sxhash_list, sxhash_vector, sxhash_bool_vector):
+       (Fsxhash, Fgethash, Fputhash, Fmaphash): Likewise.
+       * image.c (make_image, search_image_cache, lookup_image):
+       (xpm_put_color_table_h): Likewise.
+       * lisp.h (struct Lisp_Hash_Table): Likewise, for 'count', 'cmpfn',
+       and 'hashfn' members.
+       * minibuf.c (Ftry_completion, Fall_completions, Ftest_completion):
+       Likewise.
+       * print.c (print): Likewise.
+       * alloc.c (allocate_vectorlike): Check for overflow in vector size
+       calculations.
+       * ccl.c (ccl_driver): Check for overflow when converting EMACS_INT
+       to int.
+       * fns.c, image.c: Remove unnecessary static decls that would otherwise
+       need to be updated by these changes.
+       * fns.c (make_hash_table, maybe_resize_hash_table): Check for integer
+       overflow with large hash tables.
+       (make_hash_table, maybe_resize_hash_table, Fmake_hash_table):
+       Prefer the faster XFLOAT_DATA to XFLOATINT where either will do.
+       (SXHASH_REDUCE): New macro.
+       (sxhash_string, sxhash_list, sxhash_vector, sxhash_bool_vector):
+       Use it instead of discarding useful hash info with large hash values.
+       (sxhash_float): New function.
+       (sxhash): Use it.  No more need for "& INTMASK" due to above changes.
+       * lisp.h (FIXNUM_BITS): New macro, useful for SXHASH_REDUCE etc.
+       (MOST_NEGATIVE_FIXNUM, MOST_POSITIVE_FIXNUM, INTMASK): Rewrite
+       to use FIXNUM_BITS, as this simplifies things.
+       (next_almost_prime, larger_vector, sxhash, hash_lookup, hash_put):
+       Adjust signatures to match updated version of code.
+       (consing_since_gc): Now EMACS_INT, since a single hash table can
+       use more than INT_MAX bytes.
+
 2011-05-31  Paul Eggert  <eggert@cs.ucla.edu>
 
        Use 'inline', not 'INLINE'.