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Allow usage of the mimalloc allocator

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Signed-off-by: webbeef <me@webbeef.org>
This commit is contained in:
webbeef 2025-06-02 22:50:13 -07:00
parent 8d086b9fe5
commit 48faed54f7
4 changed files with 58 additions and 2 deletions
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26
components/allocator/lib.rs
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@ -9,7 +9,7 @@ static ALLOC: Allocator = Allocator;
pub use crate::platform::*;
#[cfg(not(any(windows, feature = "use-system-allocator", target_env = "ohos")))]
#[cfg(not(any(windows, feature = "use-system-allocator", feature = "use-mimalloc", target_env = "ohos")))]
mod platform {
use std::os::raw::c_void;
@ -32,6 +32,7 @@ mod platform {
#[cfg(all(
not(windows),
not(feature = "use-mimalloc"),
any(feature = "use-system-allocator", target_env = "ohos")
))]
mod platform {
@ -60,7 +61,7 @@ mod platform {
}
}
#[cfg(windows)]
#[cfg(all(windows, not(feature = "use-mimalloc")))]
mod platform {
pub use std::alloc::System as Allocator;
use std::os::raw::c_void;
@ -85,3 +86,24 @@ mod platform {
}
}
}
#[cfg(feature = "use-mimalloc")]
mod platform {
use std::os::raw::c_void;
pub use mimalloc::MiMalloc as Allocator;
/// Get the size of a heap block.
///
/// # Safety
///
/// Passing a non-heap allocated pointer to this function results in undefined behavior.
pub unsafe extern "C" fn usable_size(ptr: *const c_void) -> usize {
unsafe { Allocator.usable_size(ptr as _) }
}
/// Memory allocation APIs compatible with libc
pub mod libc_compat {
pub use libmimalloc_sys::{ mi_free as free, mi_malloc as malloc, mi_realloc as realloc };
}
}