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 MAX_INTEL_MICRO_ARCHITECTURE 30 }; 31 32 // Accessors for CPU information. 33 const std::string& vendor_name() const { return cpu_vendor_; } 34 int signature() const { return signature_; } 35 int stepping() const { return stepping_; } 36 int model() const { return model_; } 37 int family() const { return family_; } 38 int type() const { return type_; } 39 int extended_model() const { return ext_model_; } 40 int extended_family() const { return ext_family_; } 41 bool has_mmx() const { return has_mmx_; } 42 bool has_sse() const { return has_sse_; } 43 bool has_sse2() const { return has_sse2_; } 44 bool has_sse3() const { return has_sse3_; } 45 bool has_ssse3() const { return has_ssse3_; } 46 bool has_sse41() const { return has_sse41_; } 47 bool has_sse42() const { return has_sse42_; } 48 bool has_avx() const { return has_avx_; } 49 bool has_non_stop_time_stamp_counter() const { 50 return has_non_stop_time_stamp_counter_; 51 } 52 IntelMicroArchitecture GetIntelMicroArchitecture() const; 53 const std::string& cpu_brand() const { return cpu_brand_; } 54 55 private: 56 // Query the processor for CPUID information. 57 void Initialize(); 58 59 int signature_; // raw form of type, family, model, and stepping 60 int type_; // process type 61 int family_; // family of the processor 62 int model_; // model of processor 63 int stepping_; // processor revision number 64 int ext_model_; 65 int ext_family_; 66 bool has_mmx_; 67 bool has_sse_; 68 bool has_sse2_; 69 bool has_sse3_; 70 bool has_ssse3_; 71 bool has_sse41_; 72 bool has_sse42_; 73 bool has_avx_; 74 bool has_non_stop_time_stamp_counter_; 75 std::string cpu_vendor_; 76 std::string cpu_brand_; 77 }; 78 79 } // namespace base 80 81 #endif // BASE_CPU_H_ 82
