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#![cfg(target_thread_local)]
#![unstable(feature = "thread_local_internals", issue = "none")]
// Simplify dtor registration by using a list of destructors.
// The this solution works like the implementation of macOS and
// doesn't additional OS support
use crate::cell::RefCell;
#[thread_local]
static DTORS: RefCell<Vec<(*mut u8, unsafe extern "C" fn(*mut u8))>> = RefCell::new(Vec::new());
pub unsafe fn register_dtor(t: *mut u8, dtor: unsafe extern "C" fn(*mut u8)) {
match DTORS.try_borrow_mut() {
Ok(mut dtors) => dtors.push((t, dtor)),
Err(_) => rtabort!("global allocator may not use TLS"),
}
}
// every thread call this function to run through all possible destructors
pub unsafe fn run_dtors() {
let mut list = DTORS.take();
while !list.is_empty() {
for (ptr, dtor) in list {
dtor(ptr);
}
list = DTORS.take();
}
}
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