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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
pub use std::thread::*;
// Mock `spawn` just to issue a warning that mocking within the thread won't work without manual
// intervention.
pub fn spawn<F, T>(f: F) -> JoinHandle<T>
where
F: FnOnce() -> T + Send + 'static,
T: Send + 'static,
{
eprintln!("warning: mocking won't work in `std::thread::spawn`ed threads by default. Use `std::mock::SharedMockData` if mocking is needed and it's safe to do so.");
std::thread::spawn(f)
}
pub struct Scope<'scope, 'env: 'scope> {
mock_data: super::mock::SharedMockData,
scope: &'scope std::thread::Scope<'scope, 'env>,
}
impl<'scope, 'env> Scope<'scope, 'env> {
pub fn spawn<F, T>(&self, f: F) -> ScopedJoinHandle<'scope, T>
where
F: FnOnce() -> T + Send + 'scope,
T: Send + 'scope,
{
let mock_data = self.mock_data.clone();
self.scope.spawn(move || {
// # Safety
// `thread::scope` guarantees that the mock data will outlive the thread.
unsafe { mock_data.set() };
f()
})
}
}
pub fn scope<'env, F, T>(f: F) -> T
where
F: for<'scope> FnOnce(Scope<'scope, 'env>) -> T,
{
let mock_data = super::mock::SharedMockData::new();
std::thread::scope(|scope| f(Scope { mock_data, scope }))
}
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