project-base/server-skynet-source-3rd-jemalloc
2
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Implement compile-time bitmap size computation.

Browse Source
This commit is contained in:
Jason Evans
2014-09-28 14:43:11 -07:00
parent 6ef80d68f0
commit f97e5ac4ec
3 changed files with 54 additions and 26 deletions
Download Patch File Download Diff File Expand all files Collapse all files

18
src/bitmap.c
View File

@@ -2,19 +2,6 @@
#include "jemalloc/internal/jemalloc_internal.h"
/******************************************************************************/
/* Function prototypes for non-inline static functions. */
static size_t bits2groups(size_t nbits);
/******************************************************************************/
static size_t
bits2groups(size_t nbits)
{
return ((nbits >> LG_BITMAP_GROUP_NBITS) +
!!(nbits & BITMAP_GROUP_NBITS_MASK));
}
void
bitmap_info_init(bitmap_info_t *binfo, size_t nbits)
@@ -31,15 +18,16 @@ bitmap_info_init(bitmap_info_t *binfo, size_t nbits)
* that requires only one group.
*/
binfo->levels[0].group_offset = 0;
group_count = bits2groups(nbits);
group_count = BITMAP_BITS2GROUPS(nbits);
for (i = 1; group_count > 1; i++) {
assert(i < BITMAP_MAX_LEVELS);
binfo->levels[i].group_offset = binfo->levels[i-1].group_offset
+ group_count;
group_count = bits2groups(group_count);
group_count = BITMAP_BITS2GROUPS(group_count);
}
binfo->levels[i].group_offset = binfo->levels[i-1].group_offset
+ group_count;
assert(binfo->levels[i].group_offset <= BITMAP_GROUPS_MAX);
binfo->nlevels = i;
binfo->nbits = nbits;
}