libgo/runtime/getncpu-bsd.c

   1 // Copyright 2012 The Go Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style
   3 // license that can be found in the LICENSE file.
   4
   5 #include <sys/types.h>
   6 #include <sys/sysctl.h>
   7
   8 #include "runtime.h"
   9 #include "defs.h"
  10
  11 int32
  12 getproccount(void)
  13 {
  14         int mib[2], out;
  15         size_t len;
  16
  17         mib[0] = CTL_HW;
  18         mib[1] = HW_NCPU;
  19         len = sizeof(out);
  20         if(sysctl(mib, 2, &out, &len, NULL, 0) >= 0)
  21                 return (int32)out;
  22         else
  23                 return 0;
  24 }