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| author | Sverker Eriksson <[email protected]> | 2012-11-14 19:25:09 +0100 |
|---|---|---|
| committer | Sverker Eriksson <[email protected]> | 2012-11-15 18:20:48 +0100 |
| commit | 1ff4fffe893346160e5136a3e4a1999e8927b5ec (patch) | |
| tree | c2f3e13ad5acbce2089ddf08366177a8a75c8936 /erts/emulator/beam/erl_alloc_util.h | |
| parent | 51277f5dcf29a085dc478e560d3b92a438c8ae2f (diff) | |
| download | otp-1ff4fffe893346160e5136a3e4a1999e8927b5ec.tar.gz otp-1ff4fffe893346160e5136a3e4a1999e8927b5ec.tar.bz2 otp-1ff4fffe893346160e5136a3e4a1999e8927b5ec.zip | |
erts: Add carrier pointer to header of free block
Diffstat (limited to 'erts/emulator/beam/erl_alloc_util.h')
| -rw-r--r-- | erts/emulator/beam/erl_alloc_util.h | 17 |
1 files changed, 12 insertions, 5 deletions
diff --git a/erts/emulator/beam/erl_alloc_util.h b/erts/emulator/beam/erl_alloc_util.h index 7d6f61fdff..06a5a5a346 100644 --- a/erts/emulator/beam/erl_alloc_util.h +++ b/erts/emulator/beam/erl_alloc_util.h @@ -218,6 +218,7 @@ erts_aint32_t erts_alcu_fix_alloc_shrink(Allctr_t *, erts_aint32_t); #define FLG_MASK INV_UNIT_MASK #define SBC_BLK_SZ_MASK UNIT_MASK +#define MBC_FBLK_SZ_MASK UNIT_MASK #define CARRIER_SZ_MASK UNIT_MASK @@ -225,12 +226,13 @@ erts_aint32_t erts_alcu_fix_alloc_shrink(Allctr_t *, erts_aint32_t); # define CARRIER_OFFSET_BITS 13 # define CARRIER_OFFSET_SHIFT (sizeof(UWord)*8 - CARRIER_OFFSET_BITS) # define CARRIER_OFFSET_MASK (~((UWord)0) << CARRIER_OFFSET_SHIFT) -# define MBC_BLK_SZ_MASK (~CARRIER_OFFSET_MASK & ~FLG_MASK) +# define MBC_ABLK_SZ_MASK (~CARRIER_OFFSET_MASK & ~FLG_MASK) #else -# define MBC_BLK_SZ_MASK (~FLG_MASK) +# define MBC_ABLK_SZ_MASK (~FLG_MASK) #endif -#define MBC_BLK_SZ(B) (ASSERT_EXPR(!is_sbc_blk(B)), (B)->bhdr & MBC_BLK_SZ_MASK) +#define MBC_ABLK_SZ(B) (ASSERT_EXPR(!is_sbc_blk(B)), (B)->bhdr & MBC_ABLK_SZ_MASK) +#define MBC_FBLK_SZ(B) (ASSERT_EXPR(!is_sbc_blk(B)), (B)->bhdr & MBC_FBLK_SZ_MASK) #define SBC_BLK_SZ(B) (ASSERT_EXPR(is_sbc_blk(B)), (B)->bhdr & SBC_BLK_SZ_MASK) #define CARRIER_SZ(C) \ @@ -257,9 +259,14 @@ typedef struct { UWord bhdr; #if !HAVE_SUPER_ALIGNED_MB_CARRIERS Carrier_t *carrier; -#endif +#endif + union { + Carrier_t *carrier; /* if free */ + char udata__[1]; /* if allocated */ + }u; } Block_t; -typedef UWord FreeBlkFtr_t; + +typedef UWord FreeBlkFtr_t; /* Footer of a free block */ typedef struct { UWord giga_no; |