+extern __thread uword __os_thread_index;
+extern __thread uword __os_numa_index;
+
+static_always_inline uword
+os_get_thread_index (void)
+{
+ return __os_thread_index;
+}
+
+static_always_inline void
+os_set_thread_index (uword thread_index)
+{
+ __os_thread_index = thread_index;
+}
+
+static_always_inline uword
+os_get_numa_index (void)
+{
+ return __os_numa_index;
+}
+
+static_always_inline void
+os_set_numa_index (uword numa_index)
+{
+ __os_numa_index = numa_index;
+}
+
+static_always_inline uword
+os_get_cpu_number (void) __attribute__ ((deprecated));
+
+static_always_inline uword
+os_get_cpu_number (void)
+{
+ return __os_thread_index;
+}
+
+uword os_get_nthreads (void);