src/alloc.c · b222e1aaf968b9c8da5313906ab7536a868020be · emacs / emacs

Don’t assume sizeof (size_t) == 4 in allocators · b222e1aa

Paul Eggert authored Jan 18, 2020

This removes some old 32-bit assumptions in Emacs allocator tuning,
and improves performance of ‘make compile-always’ by about 7% on a
couple of 64-bit GNU/Linux platforms I tried it on.  It should not
affect performance on 32-bit platforms.
* src/alloc.c (MALLOC_SIZE_NEAR): New macro.
(MALLOC_ALIGNMENT): New constant.
(INTERVAL_BLOCK_SIZE, SBLOCK_SIZE, STRING_BLOCK_SIZE): Use the new
macro.  Make these enum constants since they need not be macros.

b222e1aa

alloc.c 209 KB

Replace alloc.c