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Lokathor 2019-09-20 09:10:03 -06:00
parent 876da036e4
commit 8cdf598be4
1 changed files with 9 additions and 5 deletions
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14
src/allocation.rs
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@ -1,9 +1,13 @@
//! Stuff to boost things in the `alloc` crate.
use super::*;
use alloc::{boxed::Box, rc::Rc, sync::Arc, vec::Vec};
use alloc::alloc::Layout;
use alloc::alloc::alloc_zeroed;
use alloc::{
alloc::{alloc_zeroed, Layout},
boxed::Box,
rc::Rc,
sync::Arc,
vec::Vec,
};
/// As [`try_cast_box`](try_cast_box), but unwraps for you.
#[inline]
@ -39,7 +43,7 @@ pub fn try_cast_box<A: Pod, B: Pod>(input: Box<A>) -> Result<Box<B>, (PodCastErr
/// the contents of the box never exists on the stack, so this can create very
/// large boxes without fear of a stack overflow.
#[inline]
pub fn try_zeroed_box<T: Zeroable>() -> Result<Box<T>,()> {
pub fn try_zeroed_box<T: Zeroable>() -> Result<Box<T>, ()> {
let layout = Layout::from_size_align(size_of::<T>(), align_of::<T>()).unwrap();
let ptr = unsafe { alloc_zeroed(layout) };
if ptr.is_null() {
@ -52,7 +56,7 @@ pub fn try_zeroed_box<T: Zeroable>() -> Result<Box<T>,()> {
/// As [`try_zeroed_box`], but unwraps for you.
#[inline]
pub fn zeroed_box<T: Zeroable>() -> Box<T> {
pub fn zeroed_box<T: Zeroable>() -> Box<T> {
try_zeroed_box().unwrap()
}