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https://github.com/fluencelabs/marine.git
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34 lines
1.2 KiB
Rust
34 lines
1.2 KiB
Rust
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/*
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* Copyright 2020 Fluence Labs Limited
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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use std::alloc::{alloc as global_alloc, dealloc as global_dealloc, Layout};
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use std::ptr::NonNull;
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/// Allocates memory area of specified size and returns its address.
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#[no_mangle]
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pub unsafe fn allocate(size: usize) -> NonNull<u8> {
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let layout: Layout = Layout::from_size_align(size, std::mem::align_of::<u8>()).unwrap();
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NonNull::new_unchecked(global_alloc(layout))
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}
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/// Deallocates memory area for provided memory pointer and size.
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#[no_mangle]
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pub unsafe fn deallocate(ptr: NonNull<u8>, size: usize) {
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let layout = Layout::from_size_align(size, std::mem::align_of::<u8>()).unwrap();
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global_dealloc(ptr.as_ptr(), layout);
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}
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