Add pthread_atfork

Author: jackpot51

src/unix/redox/mod.rs

@@ -336,6 +336,9 @@ pub const PTHREAD_COND_INITIALIZER: ::pthread_cond_t = -1isize as *mut _;
 pub const PTHREAD_RWLOCK_INITIALIZER: ::pthread_rwlock_t = -1isize as *mut _;
 pub const PTHREAD_STACK_MIN : ::size_t = 4096;
 extern {
+    pub fn pthread_atfork(prepare: ::Option<unsafe extern fn()>,
+                          parent: ::Option<unsafe extern fn()>,
+                          child: ::Option<unsafe extern fn()>) -> ::c_int;
     pub fn pthread_create(tid: *mut ::pthread_t,
                           attr: *const ::pthread_attr_t,
                           start: extern fn(*mut ::c_void) -> *mut ::c_void,