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remove stale document from malloc src directory

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this was an unfinished draft document present since the initial
check-in, that was never intended to ship in its current form. remove
it as part of reorganizing for replacement of the allocator.
This commit is contained in:
Rich Felker 2020-06-03 18:51:21 -04:00
parent c4694f4061
commit 96490a4aef
1 changed files with 0 additions and 22 deletions
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22
src/malloc/DESIGN
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In principle, this memory allocator is roughly equivalent to Doug
Lea's dlmalloc with fine-grained locking.
malloc:
Uses a freelist binned by chunk size, with a bitmap to optimize
searching for the smallest non-empty bin which can satisfy an
allocation. If no free chunks are available, it creates a new chunk of
the requested size and attempts to merge it with any existing free
chunk immediately below the newly created chunk.
Whether the chunk was obtained from a bin or newly created, it's
likely to be larger than the requested allocation. malloc always
finishes its work by passing the new chunk to realloc, which will
split it into two chunks and free the tail portion.