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extent_t bitpacking logic refactoring

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Rajeev Misra 2018-01-02 21:10:01 -08:00 committed by David Goldblatt
parent f47e39d11a
commit 72bdbc35e3
1 changed files with 28 additions and 28 deletions
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56
include/jemalloc/internal/extent_structs.h
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@ -86,42 +86,42 @@ struct extent_s {
* serial number to both resulting adjacent extents. * serial number to both resulting adjacent extents.
*/ */
uint64_t e_bits; uint64_t e_bits;
#define EXTENT_BITS_ARENA_SHIFT 0 #define MASK(CURRENT_FIELD_WIDTH, CURRENT_FIELD_SHIFT) ((((((uint64_t)0x1U) << (CURRENT_FIELD_WIDTH)) - 1)) << (CURRENT_FIELD_SHIFT))
#define EXTENT_BITS_ARENA_MASK \
(((uint64_t)(1U << MALLOCX_ARENA_BITS) - 1) << EXTENT_BITS_ARENA_SHIFT)
#define EXTENT_BITS_SLAB_SHIFT MALLOCX_ARENA_BITS #define EXTENT_BITS_ARENA_WIDTH MALLOCX_ARENA_BITS
#define EXTENT_BITS_SLAB_MASK \ #define EXTENT_BITS_ARENA_SHIFT 0
((uint64_t)0x1U << EXTENT_BITS_SLAB_SHIFT) #define EXTENT_BITS_ARENA_MASK MASK(EXTENT_BITS_ARENA_WIDTH, EXTENT_BITS_ARENA_SHIFT)
#define EXTENT_BITS_COMMITTED_SHIFT (MALLOCX_ARENA_BITS + 1) #define EXTENT_BITS_SLAB_WIDTH 1
#define EXTENT_BITS_COMMITTED_MASK \ #define EXTENT_BITS_SLAB_SHIFT (EXTENT_BITS_ARENA_WIDTH + EXTENT_BITS_ARENA_SHIFT)
((uint64_t)0x1U << EXTENT_BITS_COMMITTED_SHIFT) #define EXTENT_BITS_SLAB_MASK MASK(EXTENT_BITS_SLAB_WIDTH, EXTENT_BITS_SLAB_SHIFT)
#define EXTENT_BITS_DUMPABLE_SHIFT (MALLOCX_ARENA_BITS + 2) #define EXTENT_BITS_COMMITTED_WIDTH 1
#define EXTENT_BITS_DUMPABLE_MASK \ #define EXTENT_BITS_COMMITTED_SHIFT (EXTENT_BITS_SLAB_WIDTH + EXTENT_BITS_SLAB_SHIFT)
((uint64_t)0x1U << EXTENT_BITS_DUMPABLE_SHIFT) #define EXTENT_BITS_COMMITTED_MASK MASK(EXTENT_BITS_COMMITTED_WIDTH, EXTENT_BITS_COMMITTED_SHIFT)
#define EXTENT_BITS_ZEROED_SHIFT (MALLOCX_ARENA_BITS + 3) #define EXTENT_BITS_DUMPABLE_WIDTH 1
#define EXTENT_BITS_ZEROED_MASK \ #define EXTENT_BITS_DUMPABLE_SHIFT (EXTENT_BITS_COMMITTED_WIDTH + EXTENT_BITS_COMMITTED_SHIFT)
((uint64_t)0x1U << EXTENT_BITS_ZEROED_SHIFT) #define EXTENT_BITS_DUMPABLE_MASK MASK(EXTENT_BITS_DUMPABLE_WIDTH, EXTENT_BITS_DUMPABLE_SHIFT)
#define EXTENT_BITS_STATE_SHIFT (MALLOCX_ARENA_BITS + 4) #define EXTENT_BITS_ZEROED_WIDTH 1
#define EXTENT_BITS_STATE_MASK \ #define EXTENT_BITS_ZEROED_SHIFT (EXTENT_BITS_DUMPABLE_WIDTH + EXTENT_BITS_DUMPABLE_SHIFT)
((uint64_t)0x3U << EXTENT_BITS_STATE_SHIFT) #define EXTENT_BITS_ZEROED_MASK MASK(EXTENT_BITS_ZEROED_WIDTH, EXTENT_BITS_ZEROED_SHIFT)
#define EXTENT_BITS_SZIND_SHIFT (MALLOCX_ARENA_BITS + 6) #define EXTENT_BITS_STATE_WIDTH 2
#define EXTENT_BITS_SZIND_MASK \ #define EXTENT_BITS_STATE_SHIFT (EXTENT_BITS_ZEROED_WIDTH + EXTENT_BITS_ZEROED_SHIFT)
(((uint64_t)(1U << LG_CEIL_NSIZES) - 1) << EXTENT_BITS_SZIND_SHIFT) #define EXTENT_BITS_STATE_MASK MASK(EXTENT_BITS_STATE_WIDTH, EXTENT_BITS_STATE_SHIFT)
#define EXTENT_BITS_NFREE_SHIFT \ #define EXTENT_BITS_SZIND_WIDTH LG_CEIL_NSIZES
(MALLOCX_ARENA_BITS + 6 + LG_CEIL_NSIZES) #define EXTENT_BITS_SZIND_SHIFT (EXTENT_BITS_STATE_WIDTH + EXTENT_BITS_STATE_SHIFT)
#define EXTENT_BITS_NFREE_MASK \ #define EXTENT_BITS_SZIND_MASK MASK(EXTENT_BITS_SZIND_WIDTH, EXTENT_BITS_SZIND_SHIFT)
((uint64_t)((1U << (LG_SLAB_MAXREGS + 1)) - 1) << EXTENT_BITS_NFREE_SHIFT)
#define EXTENT_BITS_SN_SHIFT \ #define EXTENT_BITS_NFREE_WIDTH (LG_SLAB_MAXREGS + 1)
(MALLOCX_ARENA_BITS + 6 + LG_CEIL_NSIZES + (LG_SLAB_MAXREGS + 1)) #define EXTENT_BITS_NFREE_SHIFT (EXTENT_BITS_SZIND_WIDTH + EXTENT_BITS_SZIND_SHIFT)
#define EXTENT_BITS_SN_MASK (UINT64_MAX << EXTENT_BITS_SN_SHIFT) #define EXTENT_BITS_NFREE_MASK MASK(EXTENT_BITS_NFREE_WIDTH, EXTENT_BITS_NFREE_SHIFT)
#define EXTENT_BITS_SN_SHIFT (EXTENT_BITS_NFREE_WIDTH + EXTENT_BITS_NFREE_SHIFT)
#define EXTENT_BITS_SN_MASK (UINT64_MAX << EXTENT_BITS_SN_SHIFT)
/* Pointer to the extent that this structure is responsible for. */ /* Pointer to the extent that this structure is responsible for. */
void *e_addr; void *e_addr;