mirror of
https://github.com/servo/servo.git
synced 2025-06-09 09:03:23 +00:00
bb0d08432e
* Migrate to 2024 edition Signed-off-by: Simon Wülker <simon.wuelker@arcor.de> * Allow unsafe_op_in_unsafe_fn lint This lint warns by default in the 2024 edition, but is *way* too noisy for servo. We might enable it in the future, but not now. Signed-off-by: Simon Wülker <simon.wuelker@arcor.de> * Compile using the 2024 edition Signed-off-by: Simon Wülker <simon.wuelker@arcor.de> --------- Signed-off-by: Simon Wülker <simon.wuelker@arcor.de>
81 lines
2.3 KiB
Rust
81 lines
2.3 KiB
Rust
/* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
* file, You can obtain one at https://mozilla.org/MPL/2.0/. */
|
|
|
|
//! Selecting the default global allocator for Servo
|
|
|
|
#[global_allocator]
|
|
static ALLOC: Allocator = Allocator;
|
|
|
|
pub use crate::platform::*;
|
|
|
|
#[cfg(not(any(windows, feature = "use-system-allocator", target_env = "ohos")))]
|
|
mod platform {
|
|
use std::os::raw::c_void;
|
|
|
|
pub use tikv_jemallocator::Jemalloc 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 { tikv_jemallocator::usable_size(ptr) }
|
|
}
|
|
|
|
/// Memory allocation APIs compatible with libc
|
|
pub mod libc_compat {
|
|
pub use tikv_jemalloc_sys::{free, malloc, realloc};
|
|
}
|
|
}
|
|
|
|
#[cfg(all(
|
|
not(windows),
|
|
any(feature = "use-system-allocator", target_env = "ohos")
|
|
))]
|
|
mod platform {
|
|
pub use std::alloc::System as Allocator;
|
|
use std::os::raw::c_void;
|
|
|
|
/// 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 {
|
|
#[cfg(target_vendor = "apple")]
|
|
return libc::malloc_size(ptr);
|
|
|
|
#[cfg(not(target_vendor = "apple"))]
|
|
return libc::malloc_usable_size(ptr as *mut _);
|
|
}
|
|
|
|
pub mod libc_compat {
|
|
pub use libc::{free, malloc, realloc};
|
|
}
|
|
}
|
|
|
|
#[cfg(windows)]
|
|
mod platform {
|
|
pub use std::alloc::System as Allocator;
|
|
use std::os::raw::c_void;
|
|
|
|
use windows_sys::Win32::Foundation::FALSE;
|
|
use windows_sys::Win32::System::Memory::{GetProcessHeap, HeapSize, HeapValidate};
|
|
|
|
/// 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(mut ptr: *const c_void) -> usize {
|
|
let heap = GetProcessHeap();
|
|
|
|
if HeapValidate(heap, 0, ptr) == FALSE {
|
|
ptr = *(ptr as *const *const c_void).offset(-1)
|
|
}
|
|
|
|
HeapSize(heap, 0, ptr) as usize
|
|
}
|
|
}
|