f3a3488cda
By default, `rustfmt` persists the import granularity. In practice, most Rust code has import granularity "Module" due to LSP's actions. "Item" gets rid of import groupings and achieves cleaner diffs and better conflict resolution. Better greppability is a positive side effect. Note: it's an unstable rustfmt feature. `cargo +nightly fmt` must be used instead of `cargo fmt`.
42 lines
1.4 KiB
Rust
42 lines
1.4 KiB
Rust
/*
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* Copyright (c) 2026-present, the Ladybird developers.
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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// Under `cargo test`, fall back to the standard system allocator so that the
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// crate's unit tests don't need to link against the C++ runtime.
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#![cfg(not(test))]
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use std::alloc::GlobalAlloc;
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use std::alloc::Layout;
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unsafe extern "C" {
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fn ladybird_rust_alloc(size: usize, alignment: usize) -> *mut u8;
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fn ladybird_rust_alloc_zeroed(size: usize, alignment: usize) -> *mut u8;
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fn ladybird_rust_dealloc(ptr: *mut u8, alignment: usize);
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fn ladybird_rust_realloc(ptr: *mut u8, old_size: usize, new_size: usize, alignment: usize) -> *mut u8;
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}
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struct LadybirdAllocator;
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#[global_allocator]
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static LADYBIRD_ALLOCATOR: LadybirdAllocator = LadybirdAllocator;
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unsafe impl GlobalAlloc for LadybirdAllocator {
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unsafe fn alloc(&self, layout: Layout) -> *mut u8 {
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unsafe { ladybird_rust_alloc(layout.size(), layout.align()) }
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}
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unsafe fn alloc_zeroed(&self, layout: Layout) -> *mut u8 {
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unsafe { ladybird_rust_alloc_zeroed(layout.size(), layout.align()) }
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}
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unsafe fn dealloc(&self, ptr: *mut u8, layout: Layout) {
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unsafe { ladybird_rust_dealloc(ptr, layout.align()) }
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}
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unsafe fn realloc(&self, ptr: *mut u8, layout: Layout, new_size: usize) -> *mut u8 {
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unsafe { ladybird_rust_realloc(ptr, layout.size(), new_size, layout.align()) }
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}
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}
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