initial commit

src/platform.c

@@ -0,0 +1,27 @@
+#include <util.h>
+#include <platform.h>
+
+#ifdef __APPLE__
+#include <sys/types.h>
+#include <sys/sysctl.h>
+#elif linux
+#else
+#error unsupported platform
+#endif
+
+
+#ifdef __APPLE__
+int nr_cpus()
+{
+        int n;
+        size_t size = sizeof(n);
+
+        if (sysctlbyname("machdep.cpu.core_count", &n, &size, NULL, 0) != 0) {
+                pr_err("failed to get number of cpu cores: %s\n", strerrno());
+                return -1;
+        }
+
+        return n;
+}
+#endif
+