+
+#if defined(HOST_ARM) || defined (HOST_ARM64)
+
+ /* ARM platforms tries really hard to save power by powering off CPUs on SMP phones which
+ * means the normal way to query cpu count returns a wrong value with userspace API. */
+
+#ifdef _SC_NPROCESSORS_CONF
+ {
+ int count = sysconf (_SC_NPROCESSORS_CONF);
+ if (count > 0)
+ return count;
+ }
+#endif
+
+#else
+
+#ifdef HAVE_SCHED_GETAFFINITY
+ {
+ cpu_set_t set;
+ if (sched_getaffinity (getpid (), sizeof (set), &set) == 0)
+ return CPU_COUNT (&set);
+ }
+#endif