Add some constants for learning about cpus

Author: alexcrichton

src/unix/bsd/mod.rs

@@ -98,6 +98,10 @@ pub const ST_RDONLY: ::c_ulong = 1;
 
 pub const NI_MAXHOST: ::socklen_t = 1025;
 
+pub const CTL_HW: ::c_int = 6;
+pub const HW_AVAILCPU: ::c_int = 25;
+pub const HW_NCPU: ::c_int = 3;
+
 f! {
     pub fn FD_CLR(fd: ::c_int, set: *mut fd_set) -> () {
         let fd = fd as usize;

src/unix/notbsd/android/mod.rs

@@ -163,6 +163,7 @@ pub const _SC_THREAD_PRIORITY_SCHEDULING: ::c_int = 82;
 pub const _SC_THREAD_PRIO_INHERIT: ::c_int = 83;
 pub const _SC_THREAD_PRIO_PROTECT: ::c_int = 84;
 pub const _SC_THREAD_SAFE_FUNCTIONS: ::c_int = 85;
+pub const _SC_NPROCESSORS_ONLN: ::c_int = 97;
 
 pub const PTHREAD_STACK_MIN: ::size_t = 8192;
 pub const PTHREAD_MUTEX_INITIALIZER: pthread_mutex_t = pthread_mutex_t {