library/std/src/sys/unix/thread_local_key.rs

   1 #![allow(dead_code)] // not used on all platforms
   2
   3 use crate::mem;
   4
   5 pub type Key = libc::pthread_key_t;
   6
   7 #[inline]
   8 pub unsafe fn create(dtor: Option<unsafe extern "C" fn(*mut u8)>) -> Key {
   9     let mut key = 0;
  10     assert_eq!(libc::pthread_key_create(&mut key, mem::transmute(dtor)), 0);
  11     key
  12 }
  13
  14 #[inline]
  15 pub unsafe fn set(key: Key, value: *mut u8) {
  16     let r = libc::pthread_setspecific(key, value as *mut _);
  17     debug_assert_eq!(r, 0);
  18 }
  19
  20 #[inline]
  21 pub unsafe fn get(key: Key) -> *mut u8 {
  22     libc::pthread_getspecific(key) as *mut u8
  23 }
  24
  25 #[inline]
  26 pub unsafe fn destroy(key: Key) {
  27     let r = libc::pthread_key_delete(key);
  28     debug_assert_eq!(r, 0);
  29 }