/
alloc.rs
121 lines (105 loc) · 4.54 KB
/
alloc.rs
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// Copyright 2017 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
//! dox
#![unstable(issue = "32838", feature = "allocator_api")]
#[doc(inline)] #[allow(deprecated)] pub use alloc_crate::alloc::Heap;
#[doc(inline)] pub use alloc_crate::alloc::Global;
#[doc(inline)] pub use alloc_system::System;
#[doc(inline)] pub use core::alloc::*;
#[cfg(not(test))]
#[doc(hidden)]
#[allow(unused_attributes)]
pub mod __default_lib_allocator {
use super::{System, Layout, GlobalAlloc, Void};
// for symbol names src/librustc/middle/allocator.rs
// for signatures src/librustc_allocator/lib.rs
// linkage directives are provided as part of the current compiler allocator
// ABI
#[no_mangle]
#[rustc_std_internal_symbol]
pub unsafe extern fn __rdl_alloc(size: usize, align: usize) -> *mut u8 {
let layout = Layout::from_size_align_unchecked(size, align);
System.alloc(layout) as *mut u8
}
#[no_mangle]
#[rustc_std_internal_symbol]
pub unsafe extern fn __rdl_oom() -> ! {
System.oom()
}
#[no_mangle]
#[rustc_std_internal_symbol]
pub unsafe extern fn __rdl_dealloc(ptr: *mut u8,
size: usize,
align: usize) {
System.dealloc(ptr as *mut Void, Layout::from_size_align_unchecked(size, align))
}
#[no_mangle]
#[rustc_std_internal_symbol]
pub unsafe extern fn __rdl_realloc(ptr: *mut u8,
old_size: usize,
align: usize,
new_size: usize) -> *mut u8 {
let old_layout = Layout::from_size_align_unchecked(old_size, align);
System.realloc(ptr as *mut Void, old_layout, new_size) as *mut u8
}
#[no_mangle]
#[rustc_std_internal_symbol]
pub unsafe extern fn __rdl_alloc_zeroed(size: usize, align: usize) -> *mut u8 {
let layout = Layout::from_size_align_unchecked(size, align);
System.alloc_zeroed(layout) as *mut u8
}
#[cfg(stage0)]
pub mod stage0 {
#[no_mangle]
#[rustc_std_internal_symbol]
pub unsafe extern fn __rdl_usable_size(_layout: *const u8,
_min: *mut usize,
_max: *mut usize) {
unimplemented!()
}
#[no_mangle]
#[rustc_std_internal_symbol]
pub unsafe extern fn __rdl_alloc_excess(_size: usize,
_align: usize,
_excess: *mut usize,
_err: *mut u8) -> *mut u8 {
unimplemented!()
}
#[no_mangle]
#[rustc_std_internal_symbol]
pub unsafe extern fn __rdl_realloc_excess(_ptr: *mut u8,
_old_size: usize,
_old_align: usize,
_new_size: usize,
_new_align: usize,
_excess: *mut usize,
_err: *mut u8) -> *mut u8 {
unimplemented!()
}
#[no_mangle]
#[rustc_std_internal_symbol]
pub unsafe extern fn __rdl_grow_in_place(_ptr: *mut u8,
_old_size: usize,
_old_align: usize,
_new_size: usize,
_new_align: usize) -> u8 {
unimplemented!()
}
#[no_mangle]
#[rustc_std_internal_symbol]
pub unsafe extern fn __rdl_shrink_in_place(_ptr: *mut u8,
_old_size: usize,
_old_align: usize,
_new_size: usize,
_new_align: usize) -> u8 {
unimplemented!()
}
}
}