diff options
Diffstat (limited to 'ChangeLog')
| -rw-r--r-- | ChangeLog | 19 |
1 files changed, 19 insertions, 0 deletions
@@ -1,3 +1,22 @@ +2017-01-25 Andrew J. Schorr <aschorr@telemetry-investments.com> + + * awk.h (BLOCK): Remove typedef. BLOCK was used for 2 different + purposes: to contain a block allocation list header, and to hold + each individual allocated item. This was confusing, because the "size" + field was set only in the header, but not in each element. + (struct block_header): The block header contains a pointer to the first + element and the element size. + (struct block_item): Represent a single allocated item. This contains + only a pointer to the next element. This reduces the minimum allocated + item size from 2 pointers to 1 (16 bytes to 8 bytes on x86_64). + (nextfree): Change array item type from BLOCK to struct block_header. + (getblock, freeblock): Change cast from 'BLOCK' to 'struct block_item'. + * node.c (nextfree): Now an array of 'struct block_header' instead of + BLOCK. Switch the ordering to put the next pointer before the size. + (more_blocks): Replace 'BLOCK' with 'struct block_item', and add + an assert to ensure that the allocation size is at least as large + as 'struct block_item', i.e. 1 pointer. + 2017-01-22 Andrew J. Schorr <aschorr@telemetry-investments.com> * awk.h (numtype_choose): New backend macro used to implement |