1 // Copyright 2013 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 #include "chrome/browser/extensions/api/system_cpu/cpu_info_provider.h" 6 7 #include "base/sys_info.h" 8 9 namespace extensions { 10 11 using api::system_cpu::CpuInfo; 12 13 // Static member intialization. 14 base::LazyInstance<scoped_refptr<CpuInfoProvider> > 15 CpuInfoProvider::provider_ = LAZY_INSTANCE_INITIALIZER; 16 17 CpuInfoProvider::CpuInfoProvider() {} 18 19 CpuInfoProvider::~CpuInfoProvider() {} 20 21 const CpuInfo& CpuInfoProvider::cpu_info() const { 22 return info_; 23 } 24 25 void CpuInfoProvider::InitializeForTesting( 26 scoped_refptr<CpuInfoProvider> provider) { 27 DCHECK(provider.get() != NULL); 28 provider_.Get() = provider; 29 } 30 31 bool CpuInfoProvider::QueryInfo() { 32 info_.num_of_processors = base::SysInfo::NumberOfProcessors(); 33 info_.arch_name = base::SysInfo::OperatingSystemArchitecture(); 34 info_.model_name = base::SysInfo::CPUModelName(); 35 info_.features = GetFeatures(); 36 37 info_.processors.clear(); 38 // Fill in the correct number of uninitialized ProcessorInfos. 39 for (int i = 0; i < info_.num_of_processors; ++i) { 40 info_.processors.push_back(linked_ptr<api::system_cpu::ProcessorInfo>( 41 new api::system_cpu::ProcessorInfo())); 42 } 43 // Initialize the ProcessorInfos, or return an empty array if that fails. 44 if (!QueryCpuTimePerProcessor(&info_.processors)) 45 info_.processors.clear(); 46 return true; 47 } 48 49 std::vector<std::string> CpuInfoProvider::GetFeatures() const { 50 std::vector<std::string> features; 51 // These are the feature codes used by /proc/cpuinfo on Linux. 52 if (cpu_.has_mmx()) features.push_back("mmx"); 53 if (cpu_.has_sse()) features.push_back("sse"); 54 if (cpu_.has_sse2()) features.push_back("sse2"); 55 if (cpu_.has_sse3()) features.push_back("sse3"); 56 if (cpu_.has_ssse3()) features.push_back("ssse3"); 57 if (cpu_.has_sse41()) features.push_back("sse4_1"); 58 if (cpu_.has_sse42()) features.push_back("sse4_2"); 59 if (cpu_.has_avx()) features.push_back("avx"); 60 return features; 61 } 62 63 // static 64 CpuInfoProvider* CpuInfoProvider::Get() { 65 if (provider_.Get().get() == NULL) 66 provider_.Get() = new CpuInfoProvider(); 67 return provider_.Get(); 68 } 69 70 } // namespace extensions 71
