Add is_interrupted

Author: NathanRoyer

library/std/src/os/custom/mod.rs

@@ -219,6 +219,7 @@ pub mod os {
         fn get_pid(&self) -> u32;
 
         fn decode_error_kind(&self, errno: i32) -> crate::io::ErrorKind;
+        fn is_interrupted(&self, errno: i32) -> bool;
         fn hashmap_random_keys(&self) -> (u64, u64);
     }
 }

library/std/src/sys/custom/mod.rs

@@ -50,6 +50,11 @@ pub fn decode_error_kind(errno: i32) -> std_io::ErrorKind {
     custom_os_impl!(os, decode_error_kind, errno)
 }
 
+#[inline]
+pub(crate) fn is_interrupted(errno: i32) -> bool {
+    custom_os_impl!(os, is_interrupted, errno)
+}
+
 pub fn abort_internal() -> ! {
     fn infinite_loop() -> ! {
         loop {}