1 files changed, 25 insertions, 0 deletions
diff --git a/src/sys/pthread.rs b/src/sys/pthread.rs
index f730408..d42e45d 100644
--- a/src/sys/pthread.rs
+++ b/src/sys/pthread.rs
@@ -1,5 +1,14 @@
+//! Low level threading primitives
+
+#[cfg(not(target_os = "redox"))]
+use crate::errno::Errno;
+#[cfg(not(target_os = "redox"))]
+use crate::Result;
+#[cfg(not(target_os = "redox"))]
+use crate::sys::signal::Signal;
 use libc::{self, pthread_t};
 
+/// Identifies an individual thread.
 pub type Pthread = pthread_t;
 
 /// Obtain ID of the calling thread (see
@@ -11,3 +20,19 @@ pub type Pthread = pthread_t;
 pub fn pthread_self() -> Pthread {
     unsafe { libc::pthread_self() }
 }
+
+/// Send a signal to a thread (see [`pthread_kill(3)`]).
+///
+/// If `signal` is `None`, `pthread_kill` will only preform error checking and
+/// won't send any signal.
+///
+/// [`pthread_kill(3)`]: https://pubs.opengroup.org/onlinepubs/9699919799/functions/pthread_kill.html
+#[cfg(not(target_os = "redox"))]
+pub fn pthread_kill<T: Into<Option<Signal>>>(thread: Pthread, signal: T) -> Result<()> {
+    let sig = match signal.into() {
+        Some(s) => s as libc::c_int,
+        None => 0,
+    };
+    let res = unsafe { libc::pthread_kill(thread, sig) };
+    Errno::result(res).map(drop)
+}