• Paul Eggert's avatar
    Remove arbitrary limit of 2**31 entries in hash tables. · 0de4bb68
    Paul Eggert authored
    * 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):
    * print.c (print): Likewise.
    * alloc.c (allocate_vectorlike): Check for overflow in vector size
    * 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.
    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.
ChangeLog 148 KB