// Copyright 2025 Lablup Inc. and Jeongkyu Shin
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

//! Shared test-only process environment lock.

use std::sync::{Mutex, MutexGuard};

static ENV_LOCK: Mutex<()> = Mutex::new(());

pub(crate) fn lock_env() -> MutexGuard<'static, ()> {
    ENV_LOCK.lock().unwrap_or_else(|e| e.into_inner())
}
