Experimental autodetection of 64 bit timespec on 32 bit platforms

src/lib.rs

@@ -3,7 +3,35 @@
 #![allow(non_upper_case_globals)]
 #![no_std]
 
-use libc::{FILE, pid_t, pollfd, timespec, timeval};
+use core::mem::zeroed;
+
+use libc::{FILE, pid_t, pollfd, timeval};
+
+#[derive(Copy, Clone)]
+#[repr(C)]
+pub union timespec {
+    t: libc::timespec,
+    t64: [i64; 2],
+}
+
+#[cfg(not(target_pointer_width = "32"))]
+impl timespec {
+    #[inline(always)]
+    pub fn tv_sec(&self) -> i64 { unsafe { self.t.tv_sec as i64 } }
+    #[inline(always)]
+    pub fn tv_nsec(&self) -> i64 { unsafe { self.t.tv_nsec as i64 } }
+}
+
+#[cfg(target_pointer_width = "32")]
+impl timespec {
+    unsafe fn is64(&self) -> bool { self.t64[1] != 0 }
+    pub fn tv_sec(&self) -> i64 { unsafe { if self.is64() { self.t64[0] } else { self.t.tv_sec as i64 } } }
+    pub fn tv_nsec(&self) -> i64 { unsafe { if self.is64() { self.t64[1] } else { self.t.tv_nsec as i64 } } }
+}
+
+impl Default for timespec {
+    fn default() -> Self { unsafe { zeroed() } }
+}
 
 #[cfg(feature = "use-bindgen")]
 include!(concat!(env!("OUT_DIR"), "/generated.rs"));