gcc/libgo/runtime/getncpu-bsd.c

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// Copyright 2012 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
#include <sys/types.h>
#include <sys/sysctl.h>
#include "runtime.h"
#include "defs.h"
int32
getproccount(void)
{
int mib[2], out;
size_t len;
mib[0] = CTL_HW;
mib[1] = HW_NCPU;
len = sizeof(out);
if(sysctl(mib, 2, &out, &len, NULL, 0) >= 0)
return (int32)out;
else
return 0;
}