greg/pcompress
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

Fix slab sizing.

Browse source
This commit is contained in:
Moinak Ghosh 2012-07-29 00:36:20 +05:30
parent 94563a7ecd
commit a6f3756e68
1 changed files with 5 additions and 4 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

9
allocator.c
View file

@ -67,7 +67,6 @@
#define SLAB_START_POW2 8 /* 2 ^ SLAB_START_POW2 = SLAB_START. */ #define SLAB_START_POW2 8 /* 2 ^ SLAB_START_POW2 = SLAB_START. */
#define HTABLE_SZ 8192 #define HTABLE_SZ 8192
#define TWOM (2UL * 1024UL * 1024UL)
#define ONEM (1UL * 1024UL * 1024UL) #define ONEM (1UL * 1024UL * 1024UL)
static const unsigned int bv[] = { static const unsigned int bv[] = {
@ -125,7 +124,8 @@ slab_init()
slab_sz *= 2; slab_sz *= 2;
} }
/* At this point slab_sz is 1M. So linear slots start at 1M. */ /* Linear slots start at 1M. */
slab_sz = ONEM;
for (i = NUM_POW2; i < SLAB_POS_HASH; i++) { for (i = NUM_POW2; i < SLAB_POS_HASH; i++) {
slabheads[i].avail = NULL; slabheads[i].avail = NULL;
slabheads[i].next = NULL; slabheads[i].next = NULL;
@ -382,9 +382,10 @@ slab_alloc(void *p, size_t size)
/* Next slots are in intervals of 1M. */ /* Next slots are in intervals of 1M. */
div = size / ONEM; div = size / ONEM;
if (size % ONEM) div++; if (size % ONEM) div++;
if (div < NUM_LINEAR) slab = &slabheads[div + NUM_POW2]; if (div < NUM_LINEAR) slab = &slabheads[div + NUM_POW2 - 1];
} }
} }
if (!slab) { if (!slab) {
struct bufentry *buf = (struct bufentry *)malloc(sizeof (struct bufentry)); struct bufentry *buf = (struct bufentry *)malloc(sizeof (struct bufentry));
uint32_t hindx; uint32_t hindx;
@ -510,4 +511,4 @@ slab_free(void *p, void *address)
int int
slab_cache_add(size_t size) {} slab_cache_add(size_t size) {}
#endif #endif