il2_utils/mem/impl_linux/
mod.rs

1/*
2 * BSD 3-Clause License
3 *
4 * Copyright (c) 2019-2020, InterlockLedger Network
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions are met:
9 *
10 * * Redistributions of source code must retain the above copyright notice, this
11 *   list of conditions and the following disclaimer.
12 *
13 * * Redistributions in binary form must reproduce the above copyright notice,
14 *   this list of conditions and the following disclaimer in the documentation
15 *   and/or other materials provided with the distribution.
16 *
17 * * Neither the name of the copyright holder nor the names of its
18 *   contributors may be used to endorse or promote products derived from
19 *   this software without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
22 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
24 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
27 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
28 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
29 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
30 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31 */
32//! This module provides the Linux implementation of the memory manipulation
33//! functions.
34
35#[cfg(test)]
36mod tests;
37
38use core::ffi::c_void;
39use libc::{mlock, munlock};
40
41#[allow(clippy::not_unsafe_ptr_arg_deref)]
42#[inline]
43pub fn lock_mem_core(ptr: *const c_void, size: usize) -> bool {
44    unsafe { matches!(mlock(ptr, size), 0) }
45}
46
47#[allow(clippy::not_unsafe_ptr_arg_deref)]
48#[inline]
49pub fn unlock_mem_core(ptr: *const c_void, size: usize) -> bool {
50    unsafe { matches!(munlock(ptr, size), 0) }
51}
52
53#[inline]
54pub fn lock_supported_core() -> bool {
55    true
56}
il2_utils/mem/impl_linux/mod.rs

il2_utils/mem/impl_linux/
mod.rs
