composable_allocators/
system.rs

1use crate::base::*;
2use const_default_derive::ConstDefault;
3use core::alloc::{self, AllocError, Allocator};
4use core::ptr::NonNull;
5
6#[cfg(windows)]
7const IMPL: crate::winapi::WinApi = crate::winapi::WinApi;
8
9#[cfg(not(windows))]
10const IMPL: crate::posix::Posix = crate::posix::Posix;
11
12#[derive(Debug, Copy, Clone, ConstDefault)]
13pub struct System;
14
15unsafe impl NonUnwinding for System { }
16
17unsafe impl Allocator for System {
18    fn allocate(&self, layout: alloc::Layout) -> Result<NonNull<[u8]>, AllocError> {
19        IMPL.allocate(layout)
20    }
21
22    fn allocate_zeroed(&self, layout: alloc::Layout) -> Result<NonNull<[u8]>, AllocError> {
23        IMPL.allocate_zeroed(layout)
24    }
25
26    unsafe fn deallocate(&self, ptr: NonNull<u8>, layout: alloc::Layout) {
27        IMPL.deallocate(ptr, layout)
28    }
29
30    unsafe fn grow(
31        &self, 
32        ptr: NonNull<u8>,
33        old_layout: alloc::Layout, 
34        new_layout: alloc::Layout
35    ) -> Result<NonNull<[u8]>, AllocError> {
36        IMPL.grow(ptr, old_layout, new_layout)
37    }
38
39    unsafe fn grow_zeroed(
40        &self, 
41        ptr: NonNull<u8>, 
42        old_layout: alloc::Layout, 
43        new_layout: alloc::Layout
44    ) -> Result<NonNull<[u8]>, AllocError> {
45        IMPL.grow_zeroed(ptr, old_layout, new_layout)
46    }
47
48    unsafe fn shrink(
49        &self, 
50        ptr: NonNull<u8>, 
51        old_layout: alloc::Layout, 
52        new_layout: alloc::Layout
53    ) -> Result<NonNull<[u8]>, AllocError> {
54        IMPL.shrink(ptr, old_layout, new_layout)
55    }
56}
composable_allocators/system.rs

composable_allocators/
system.rs
