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This commit is contained in:
Daan Leijen 2023-03-28 09:14:17 -07:00
parent a21ddd03fe
commit 560e32b2e1
1 changed files with 4 additions and 6 deletions
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10
src/arena.c
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@ -11,12 +11,10 @@ large blocks (>= MI_ARENA_BLOCK_SIZE, 32MiB).
In contrast to the rest of mimalloc, the arenas are shared between
threads and need to be accessed using atomic operations.
Currently arenas are only used to for huge OS page (1GiB) reservations,
otherwise it delegates to direct allocation from the OS.
In the future, we can expose an API to manually add more kinds of arenas
which is sometimes needed for embedded devices or shared memory for example.
(We can also employ this with WASI or `sbrk` systems to reserve large arenas
on demand and be able to reuse them efficiently).
Arenas are used to for huge OS page (1GiB) reservations or for reserving
OS memory upfront which can be improve performance or is sometimes needed
on embedded devices. We can also employ this with WASI or `sbrk` systems
to reserve large arenas upfront and be able to reuse the memory more effectively.
The arena allocation needs to be thread safe and we use an atomic bitmap to allocate.
-----------------------------------------------------------------------------*/