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104 lines
2.8 KiB
C++
104 lines
2.8 KiB
C++
// Copyright (c) 2012 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef BASE_CPU_H_
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#define BASE_CPU_H_
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#include <string>
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#include <tuple>
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#include "base/base_export.h"
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#include "build/build_config.h"
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namespace base {
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#if defined(ARCH_CPU_X86_FAMILY)
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namespace internal {
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// Compute the CPU family and model based on the vendor and CPUID signature.
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// Returns in order: family, model, extended family, extended model.
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BASE_EXPORT std::tuple<int, int, int, int> ComputeX86FamilyAndModel(
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const std::string& vendor,
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int signature);
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} // namespace internal
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#endif // defined(ARCH_CPU_X86_FAMILY)
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// Query information about the processor.
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class BASE_EXPORT CPU final {
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public:
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CPU();
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enum IntelMicroArchitecture {
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PENTIUM,
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SSE,
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SSE2,
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SSE3,
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SSSE3,
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SSE41,
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SSE42,
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AVX,
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AVX2,
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MAX_INTEL_MICRO_ARCHITECTURE
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};
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// Accessors for CPU information.
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const std::string& vendor_name() const { return cpu_vendor_; }
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int signature() const { return signature_; }
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int stepping() const { return stepping_; }
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int model() const { return model_; }
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int family() const { return family_; }
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int type() const { return type_; }
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int extended_model() const { return ext_model_; }
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int extended_family() const { return ext_family_; }
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bool has_mmx() const { return has_mmx_; }
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bool has_sse() const { return has_sse_; }
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bool has_sse2() const { return has_sse2_; }
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bool has_sse3() const { return has_sse3_; }
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bool has_ssse3() const { return has_ssse3_; }
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bool has_sse41() const { return has_sse41_; }
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bool has_sse42() const { return has_sse42_; }
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bool has_popcnt() const { return has_popcnt_; }
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bool has_avx() const { return has_avx_; }
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bool has_avx2() const { return has_avx2_; }
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bool has_aesni() const { return has_aesni_; }
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bool has_non_stop_time_stamp_counter() const {
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return has_non_stop_time_stamp_counter_;
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}
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bool is_running_in_vm() const { return is_running_in_vm_; }
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IntelMicroArchitecture GetIntelMicroArchitecture() const;
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const std::string& cpu_brand() const { return cpu_brand_; }
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private:
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// Query the processor for CPUID information.
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void Initialize();
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int signature_; // raw form of type, family, model, and stepping
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int type_; // process type
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int family_; // family of the processor
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int model_; // model of processor
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int stepping_; // processor revision number
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int ext_model_;
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int ext_family_;
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bool has_mmx_;
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bool has_sse_;
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bool has_sse2_;
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bool has_sse3_;
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bool has_ssse3_;
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bool has_sse41_;
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bool has_sse42_;
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bool has_popcnt_;
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bool has_avx_;
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bool has_avx2_;
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bool has_aesni_;
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bool has_non_stop_time_stamp_counter_;
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bool is_running_in_vm_;
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std::string cpu_vendor_;
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std::string cpu_brand_;
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};
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} // namespace base
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#endif // BASE_CPU_H_
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