33 lines
1.1 KiB
Rust
33 lines
1.1 KiB
Rust
/*
|
|
* This file is part of espanso.
|
|
*
|
|
* Copyright (C) 2019-2021 Federico Terzi
|
|
*
|
|
* espanso is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation, either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* espanso is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with espanso. If not, see <https://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
use std::sync::atomic::{AtomicUsize, Ordering};
|
|
|
|
static STRUCT_COUNTER: AtomicUsize = AtomicUsize::new(0);
|
|
|
|
pub type StructId = usize;
|
|
|
|
/// For performance reasons, some structs need a unique id to be
|
|
/// compared efficiently with one another.
|
|
/// In order to generate it, we use an atomic static variable
|
|
/// that is incremented for each struct.
|
|
pub fn next_id() -> StructId {
|
|
STRUCT_COUNTER.fetch_add(1, Ordering::SeqCst)
|
|
}
|