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hardened_malloc
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align size class metadata to cacheline size

pull/50/head
Daniel Micay 2018-08-31 23:10:26 -04:00
parent fad10ce943
commit f441dfe2e3
1 changed files with 2 additions and 1 deletions
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3
malloc.c
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@ -18,6 +18,7 @@
static_assert(sizeof(void *) == 8, "64-bit only"); static_assert(sizeof(void *) == 8, "64-bit only");
#define CACHELINE_SIZE 64
#define PAGE_SHIFT 12 #define PAGE_SHIFT 12
#define PAGE_SIZE ((size_t)1 << PAGE_SHIFT) #define PAGE_SIZE ((size_t)1 << PAGE_SHIFT)
#define PAGE_MASK ((size_t)(PAGE_SIZE - 1)) #define PAGE_MASK ((size_t)(PAGE_SIZE - 1))
@ -196,7 +197,7 @@ static struct size_class {
struct random_state rng; struct random_state rng;
size_t metadata_allocated; size_t metadata_allocated;
size_t metadata_count; size_t metadata_count;
} size_class_metadata[N_SIZE_CLASSES]; } __attribute__((aligned(CACHELINE_SIZE))) size_class_metadata[N_SIZE_CLASSES];
static const size_t class_region_size = 128ULL * 1024 * 1024 * 1024; static const size_t class_region_size = 128ULL * 1024 * 1024 * 1024;
static const size_t real_class_region_size = class_region_size * 2; static const size_t real_class_region_size = class_region_size * 2;