romenskiy2012/jemalloc
1
0
Fork 0
mirror of https://github.com/jemalloc/jemalloc.git synced 2026-06-05 11:44:18 +03:00
Code Issues Projects Releases Packages Wiki Activity

Try to use __builtin_ffsl if ffsl is unavailable.

Browse source 
Some platforms (like those using Newlib) don't have ffs/ffsl.  This
commit adds a check to configure.ac for __builtin_ffsl if ffsl isn't
found.  __builtin_ffsl performs the same function as ffsl, and has the
added benefit of being available on any platform utilizing
Gcc-compatible compiler.

This change does not address the used of ffs in the MALLOCX_ARENA()
macro.
This commit is contained in:
Richard Diamond 2014-05-28 21:37:02 -05:00 • committed by Jason Evans
parent 0b5c92213f
commit 9c3a10fdf6
9 changed files with 71 additions and 17 deletions
Download patch file Download diff file Expand all files Collapse all files

4
src/rtree.c
View file

@ -9,8 +9,8 @@ rtree_new(unsigned bits, rtree_alloc_t *alloc, rtree_dalloc_t *dalloc)
assert(bits > 0 && bits <= (sizeof(uintptr_t) << 3));
bits_per_level = ffs(pow2_ceil((RTREE_NODESIZE / sizeof(void *)))) - 1;
bits_in_leaf = ffs(pow2_ceil((RTREE_NODESIZE / sizeof(uint8_t)))) - 1;
bits_per_level = jemalloc_ffs(pow2_ceil((RTREE_NODESIZE / sizeof(void *)))) - 1;
bits_in_leaf = jemalloc_ffs(pow2_ceil((RTREE_NODESIZE / sizeof(uint8_t)))) - 1;
if (bits > bits_in_leaf) {
height = 1 + (bits - bits_in_leaf) / bits_per_level;
if ((height-1) * bits_per_level + bits_in_leaf != bits)