src/libstd/sys/unix/ext/thread.rs

   1 // Copyright 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 //! Unix-specific extensions to primitives in the `std::process` module.
  12
  13 #![unstable(feature = "thread_extensions", issue = "29791")]
  14
  15 use os::unix::raw::{pthread_t};
  16 use sys_common::{AsInner, IntoInner};
  17 use thread::{JoinHandle};
  18
  19 #[unstable(feature = "thread_extensions", issue = "29791")]
  20 pub type RawPthread = pthread_t;
  21
  22 /// Unix-specific extensions to `std::thread::JoinHandle`
  23 #[unstable(feature = "thread_extensions", issue = "29791")]
  24 pub trait JoinHandleExt {
  25     /// Extracts the raw pthread_t without taking ownership
  26     fn as_pthread_t(&self) -> RawPthread;
  27     /// Consumes the thread, returning the raw pthread_t
  28     ///
  29     /// This function **transfers ownership** of the underlying pthread_t to
  30     /// the caller. Callers are then the unique owners of the pthread_t and
  31     /// must either detech or join the pthread_t once it's no longer needed.
  32     fn into_pthread_t(self) -> RawPthread;
  33 }
  34
  35 #[unstable(feature = "thread_extensions", issue = "29791")]
  36 impl<T> JoinHandleExt for JoinHandle<T> {
  37     fn as_pthread_t(&self) -> RawPthread {
  38         self.as_inner().id() as RawPthread
  39     }
  40     fn into_pthread_t(self) -> RawPthread {
  41         self.into_inner().into_id() as RawPthread
  42     }
  43 }