Constant SYS_SIGTIMEDWAIT 

pub const SYS_SIGTIMEDWAIT: usize = 326; // 326usize

Suspend the current thread until a specific signal is delivered.

• set_ptr: pointer to signal set to wait for
• info_ptr: pointer to receive signal info
• timeout_ptr: pointer to timeout (0 = infinite)

Returns the signal number that was delivered.