Sinity d96752e0f1 Allocate history buffer segments with mmap ...

glibc can raise its dynamic mmap threshold above these MB-scale allocations, routing later scrollback segments through brk. Closing windows then leaves the freed segments stranded in allocator bins and grows the long-lived kitty process.

Back the existing batched segment layout with anonymous mappings instead. This preserves zero-initialization and pointer layout while ensuring the memory is returned to the OS when a history buffer is cleared or destroyed.

Co-Authored-By: Claude <noreply@anthropic.com>

2026-07-11 21:46:30 +02:00

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