Improve `MallocMemory` implementation

bytecodealliance / wasmtime

A fast and secure runtime for WebAssembly

https://wasmtime.dev/

Apache License 2.0

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Closed alexcrichton closed 5 days ago

alexcrichton commented 5 days ago

Optimize memory growth in debug mode which was showing up locally in profiles as being particularly slow.
Fix a bug where the memory_reservation_for_growth was accidentally initialized instead of leaving it uninitialized as intended.