src/libstd/sys/unix/thread_local.rs

   1 // Copyright 2014-2015 The Rust Project Developers. See the COPYRIGHT
   2 // file at the top-level directory of this distribution and at
   3 // http://rust-lang.org/COPYRIGHT.
   4 //
   5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
   6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
   7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
   8 // option. This file may not be copied, modified, or distributed
   9 // except according to those terms.
  10
  11 #![allow(dead_code)] // not used on all platforms
  12
  13 use mem;
  14 use libc;
  15
  16 pub type Key = libc::pthread_key_t;
  17
  18 #[inline]
  19 pub unsafe fn create(dtor: Option<unsafe extern fn(*mut u8)>) -> Key {
  20     let mut key = 0;
  21     assert_eq!(libc::pthread_key_create(&mut key, mem::transmute(dtor)), 0);
  22     key
  23 }
  24
  25 #[inline]
  26 pub unsafe fn set(key: Key, value: *mut u8) {
  27     let r = libc::pthread_setspecific(key, value as *mut _);
  28     debug_assert_eq!(r, 0);
  29 }
  30
  31 #[inline]
  32 pub unsafe fn get(key: Key) -> *mut u8 {
  33     libc::pthread_getspecific(key) as *mut u8
  34 }
  35
  36 #[inline]
  37 pub unsafe fn destroy(key: Key) {
  38     let r = libc::pthread_key_delete(key);
  39     debug_assert_eq!(r, 0);
  40 }
  41
  42 #[inline]
  43 pub fn requires_synchronized_create() -> bool {
  44     false
  45 }