Merge pull request rust-lang#3833 from tgross35/backport-potato

[0.2] Backport two pull requests

libc-test/semver/netbsd.txt

@@ -1190,6 +1190,9 @@ _cpuset_destroy
 _cpuset_isset
 _cpuset_set
 _cpuset_zero
+_lwp_park
+_lwp_unpark
+_lwp_unpark_all
 _lwp_self
 abs
 accept4

libc-test/semver/unix.txt

@@ -687,6 +687,7 @@ pthread_condattr_init
 pthread_condattr_t
 pthread_create
 pthread_detach
+pthread_equal
 pthread_exit
 pthread_getspecific
 pthread_join

src/unix/bsd/netbsdlike/netbsd/mod.rs

@@ -2875,6 +2875,22 @@ extern "C" {
     pub fn getrandom(buf: *mut ::c_void, buflen: ::size_t, flags: ::c_uint) -> ::ssize_t;
 
     pub fn reboot(mode: ::c_int, bootstr: *mut ::c_char) -> ::c_int;
+
+    #[link_name = "___lwp_park60"]
+    pub fn _lwp_park(
+        clock: ::clockid_t,
+        flags: ::c_int,
+        ts: *const ::timespec,
+        unpark: ::lwpid_t,
+        hint: *const ::c_void,
+        unparkhint: *mut ::c_void,
+    ) -> ::c_int;
+    pub fn _lwp_unpark(lwp: ::lwpid_t, hint: *const ::c_void) -> ::c_int;
+    pub fn _lwp_unpark_all(
+        targets: *const ::lwpid_t,
+        ntargets: ::size_t,
+        hint: *const ::c_void,
+    ) -> ::c_int;
 }
 
 #[link(name = "rt")]

src/unix/mod.rs

@@ -1056,6 +1056,7 @@ extern "C" {
     pub fn times(buf: *mut ::tms) -> ::clock_t;
 
     pub fn pthread_self() -> ::pthread_t;
+    pub fn pthread_equal(t1: ::pthread_t, t2: ::pthread_t) -> ::c_int;
     #[cfg_attr(
         all(target_os = "macos", target_arch = "x86"),
         link_name = "pthread_join$UNIX2003"