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#![cfg(target_thread_local)]
#![unstable(feature = "thread_local_internals", issue = "0")]
#[cfg(any(target_os = "linux", target_os = "fuchsia", target_os = "hermit"))]
pub unsafe fn register_dtor(t: *mut u8, dtor: unsafe extern fn(*mut u8)) {
use libc;
use mem;
use sys_common::thread_local::register_dtor_fallback;
extern {
#[linkage = "extern_weak"]
static __dso_handle: *mut u8;
#[linkage = "extern_weak"]
static __cxa_thread_atexit_impl: *const libc::c_void;
}
if !__cxa_thread_atexit_impl.is_null() {
type F = unsafe extern fn(dtor: unsafe extern fn(*mut u8),
arg: *mut u8,
dso_handle: *mut u8) -> libc::c_int;
mem::transmute::<*const libc::c_void, F>(__cxa_thread_atexit_impl)
(dtor, t, &__dso_handle as *const _ as *mut _);
return
}
register_dtor_fallback(t, dtor);
}
#[cfg(target_os = "macos")]
pub unsafe fn register_dtor(t: *mut u8, dtor: unsafe extern fn(*mut u8)) {
extern {
fn _tlv_atexit(dtor: unsafe extern fn(*mut u8),
arg: *mut u8);
}
_tlv_atexit(dtor, t);
}
pub fn requires_move_before_drop() -> bool {
cfg!(target_os = "macos")
}