/*
- * Copyright 2013 Facebook, Inc.
+ * Copyright 2014 Facebook, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
#define FOLLY_CPUID_H_
#include <cstdint>
+#include <folly/Portability.h>
namespace folly {
class CpuId {
public:
CpuId() {
-#if defined(__x86_64__) || defined(__i386__)
+#ifdef _MSC_VER
+ int reg[4];
+
+ __cpuid((int *)reg, 1);
+ c_ = reg[2];
+ d_ = reg[3];
+
+#elif FOLLY_X64 || defined(__i386__)
__asm__("cpuid" : "=c"(c_), "=d"(d_) : "a"(1) : "ebx");
#else
// On non-Intel, none of these features exist; at least not in the same form