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 final {
16  public:
17   CPU();
18 
19   enum IntelMicroArchitecture {
20     PENTIUM,
21     SSE,
22     SSE2,
23     SSE3,
24     SSSE3,
25     SSE41,
26     SSE42,
27     AVX,
28     AVX2,
29     MAX_INTEL_MICRO_ARCHITECTURE
30   };
31 
32   // Accessors for CPU information.
vendor_name()33   const std::string& vendor_name() const { return cpu_vendor_; }
signature()34   int signature() const { return signature_; }
stepping()35   int stepping() const { return stepping_; }
model()36   int model() const { return model_; }
family()37   int family() const { return family_; }
type()38   int type() const { return type_; }
extended_model()39   int extended_model() const { return ext_model_; }
extended_family()40   int extended_family() const { return ext_family_; }
has_mmx()41   bool has_mmx() const { return has_mmx_; }
has_sse()42   bool has_sse() const { return has_sse_; }
has_sse2()43   bool has_sse2() const { return has_sse2_; }
has_sse3()44   bool has_sse3() const { return has_sse3_; }
has_ssse3()45   bool has_ssse3() const { return has_ssse3_; }
has_sse41()46   bool has_sse41() const { return has_sse41_; }
has_sse42()47   bool has_sse42() const { return has_sse42_; }
has_popcnt()48   bool has_popcnt() const { return has_popcnt_; }
has_avx()49   bool has_avx() const { return has_avx_; }
has_avx2()50   bool has_avx2() const { return has_avx2_; }
has_aesni()51   bool has_aesni() const { return has_aesni_; }
has_non_stop_time_stamp_counter()52   bool has_non_stop_time_stamp_counter() const {
53     return has_non_stop_time_stamp_counter_;
54   }
55 
56   IntelMicroArchitecture GetIntelMicroArchitecture() const;
cpu_brand()57   const std::string& cpu_brand() const { return cpu_brand_; }
58 
59  private:
60   // Query the processor for CPUID information.
61   void Initialize();
62 
63   int signature_;  // raw form of type, family, model, and stepping
64   int type_;  // process type
65   int family_;  // family of the processor
66   int model_;  // model of processor
67   int stepping_;  // processor revision number
68   int ext_model_;
69   int ext_family_;
70   bool has_mmx_;
71   bool has_sse_;
72   bool has_sse2_;
73   bool has_sse3_;
74   bool has_ssse3_;
75   bool has_sse41_;
76   bool has_sse42_;
77   bool has_popcnt_;
78   bool has_avx_;
79   bool has_avx2_;
80   bool has_aesni_;
81   bool has_non_stop_time_stamp_counter_;
82   std::string cpu_vendor_;
83   std::string cpu_brand_;
84 };
85 
86 }  // namespace base
87 
88 #endif  // BASE_CPU_H_
89