// Copyright (c) 2012 The Chromium Authors. All rights reserved. // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. #ifndef BASE_CPU_H_ #define BASE_CPU_H_ #include <string> #include "base/base_export.h" namespace base { // Query information about the processor. class BASE_EXPORT CPU { public: // Constructor CPU(); enum IntelMicroArchitecture { PENTIUM, SSE, SSE2, SSE3, SSSE3, SSE41, SSE42, AVX, MAX_INTEL_MICRO_ARCHITECTURE }; // Accessors for CPU information. const std::string& vendor_name() const { return cpu_vendor_; } int signature() const { return signature_; } int stepping() const { return stepping_; } int model() const { return model_; } int family() const { return family_; } int type() const { return type_; } int extended_model() const { return ext_model_; } int extended_family() const { return ext_family_; } bool has_mmx() const { return has_mmx_; } bool has_sse() const { return has_sse_; } bool has_sse2() const { return has_sse2_; } bool has_sse3() const { return has_sse3_; } bool has_ssse3() const { return has_ssse3_; } bool has_sse41() const { return has_sse41_; } bool has_sse42() const { return has_sse42_; } bool has_avx() const { return has_avx_; } // has_avx_hardware returns true when AVX is present in the CPU. This might // differ from the value of |has_avx()| because |has_avx()| also tests for // operating system support needed to actually call AVX instuctions. // Note: you should never need to call this function. It was added in order // to workaround a bug in NSS but |has_avx()| is what you want. bool has_avx_hardware() const { return has_avx_hardware_; } bool has_aesni() const { return has_aesni_; } bool has_non_stop_time_stamp_counter() const { return has_non_stop_time_stamp_counter_; } IntelMicroArchitecture GetIntelMicroArchitecture() const; const std::string& cpu_brand() const { return cpu_brand_; } private: // Query the processor for CPUID information. void Initialize(); int signature_; // raw form of type, family, model, and stepping int type_; // process type int family_; // family of the processor int model_; // model of processor int stepping_; // processor revision number int ext_model_; int ext_family_; bool has_mmx_; bool has_sse_; bool has_sse2_; bool has_sse3_; bool has_ssse3_; bool has_sse41_; bool has_sse42_; bool has_avx_; bool has_avx_hardware_; bool has_aesni_; bool has_non_stop_time_stamp_counter_; std::string cpu_vendor_; std::string cpu_brand_; }; } // namespace base #endif // BASE_CPU_H_