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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4 
5 #ifndef BASE_CPU_H_
6 #define BASE_CPU_H_
7 
8 #include <string>
9 
10 #include "base/base_export.h"
11 
12 namespace base {
13 
14 // Query information about the processor.
15 class BASE_EXPORT CPU {
16  public:
17   // Constructor
18   CPU();
19 
20   enum IntelMicroArchitecture {
21     PENTIUM,
22     SSE,
23     SSE2,
24     SSE3,
25     SSSE3,
26     SSE41,
27     SSE42,
28     AVX,
29     AVX2,
30     MAX_INTEL_MICRO_ARCHITECTURE
31   };
32 
33   // Accessors for CPU information.
vendor_name()34   const std::string& vendor_name() const { return cpu_vendor_; }
signature()35   int signature() const { return signature_; }
stepping()36   int stepping() const { return stepping_; }
model()37   int model() const { return model_; }
family()38   int family() const { return family_; }
type()39   int type() const { return type_; }
extended_model()40   int extended_model() const { return ext_model_; }
extended_family()41   int extended_family() const { return ext_family_; }
has_mmx()42   bool has_mmx() const { return has_mmx_; }
has_sse()43   bool has_sse() const { return has_sse_; }
has_sse2()44   bool has_sse2() const { return has_sse2_; }
has_sse3()45   bool has_sse3() const { return has_sse3_; }
has_ssse3()46   bool has_ssse3() const { return has_ssse3_; }
has_sse41()47   bool has_sse41() const { return has_sse41_; }
has_sse42()48   bool has_sse42() const { return has_sse42_; }
has_popcnt()49   bool has_popcnt() const { return has_popcnt_; }
has_avx()50   bool has_avx() const { return has_avx_; }
has_avx2()51   bool has_avx2() const { return has_avx2_; }
has_aesni()52   bool has_aesni() const { return has_aesni_; }
has_non_stop_time_stamp_counter()53   bool has_non_stop_time_stamp_counter() const {
54     return has_non_stop_time_stamp_counter_;
55   }
56 
57   IntelMicroArchitecture GetIntelMicroArchitecture() const;
cpu_brand()58   const std::string& cpu_brand() const { return cpu_brand_; }
59 
60  private:
61   // Query the processor for CPUID information.
62   void Initialize();
63 
64   int signature_;  // raw form of type, family, model, and stepping
65   int type_;  // process type
66   int family_;  // family of the processor
67   int model_;  // model of processor
68   int stepping_;  // processor revision number
69   int ext_model_;
70   int ext_family_;
71   bool has_mmx_;
72   bool has_sse_;
73   bool has_sse2_;
74   bool has_sse3_;
75   bool has_ssse3_;
76   bool has_sse41_;
77   bool has_sse42_;
78   bool has_popcnt_;
79   bool has_avx_;
80   bool has_avx2_;
81   bool has_aesni_;
82   bool has_non_stop_time_stamp_counter_;
83   std::string cpu_vendor_;
84   std::string cpu_brand_;
85 };
86 
87 }  // namespace base
88 
89 #endif  // BASE_CPU_H_
90