message: Add `sys_wait` functions (Fixes
diff: @@ -9,6 +9,59 @@ extern crate sys_resource;
  use platform::types::*;
  use sys_resource::rusage;
  +pub const WNOHANG: c_int = 1;
  +pub const WUNTRACED: c_int = 2;
  +
  +pub const WSTOPPED: c_int = 2;
  +pub const WEXITED: c_int = 4
  +pub const WCONTINUED: c_int = 8
  +pub const WNOWAIT: c_int = 0x1000000
  +
  +pub const __WNOTHREAD: c_int = 0x20000000
  +pub const __WALL: c_int = 0x40000000
  +pub const __WCLONE: c_int = 0x80000000
  +
  +#[inline]
  +pub fn WEXITSTATUS(status: c_int) -> c_int {
  + (status & 0xff00) >> 8
  +}
  +
  +#[inline]
  +pub fn WTERMSIG(status: c_int) -> c_int {
  + status & 0x7f
  +}
  +
  +#[inline]
  +pub fn WSTOPSIG(status: c_int) -> c_int {
  + WEXITSTATUS(status)
  +}
  +
  +#[inline]
  +pub fn WCOREDUMP(status: c_int) -> c_int {
  + status & 0x80
  +}
  +
  +#[inline]
  +pub fn WIFEXITED(status: c_int) -> c_int {
  + // This is simulate the Not operator when used for regular integers in C
  + (WTERMSIG(status) == 0) as c_int
  +}
  +
  +#[inline]
  +pub fn WIFSTOPPED(status: c_int) -> c_int {
  + (((((status & 0xffff) * 0x10001) >> 8) as c_short) > 0x7f00) as c_int
  +}
  +
  +#[inline]
  +pub fn WIFSIGNALED(status: c_int) -> c_int {
  + ((status & 0xffff) - (1 as c_uint) < 0xffu) as c_int
  +}
  +
  +#[inline]
  +pub fn WIFSIGNALED(status: c_int) -> c_int {
  + (status == 0xffff) as c_int
  +}
  +
  #[no_mangle]
  pub unsafe extern "C" fn wait(stat_loc: *mut c_int) -> pid_t {
  waitpid(!0, stat_loc, 0)
  