alloc

To use alloc you must implement a global (heap) allocator.

# // Copyright 2023 Google LLC
# // SPDX-License-Identifier: Apache-2.0
#
{{#include alloc-example/src/main.rs:Alloc}}

• buddy_system_allocator is a crate implementing a basic buddy system allocator. Other crates are available, or you can write your own or hook into your existing allocator.
• The const parameter of LockedHeap is the max order of the allocator; i.e. in this case it can allocate regions of up to 2**32 bytes.
• If any crate in your dependency tree depends on alloc then you must have exactly one global allocator defined in your binary. Usually this is done in the top-level binary crate.
• extern crate panic_halt as _ is necessary to ensure that the panic_halt crate is linked in so we get its panic handler.
• This example will build but not run, as it doesn't have an entry point.