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Side by Side Diff: chrome/browser/extensions/api/system_cpu/cpu_info_provider.cc

Issue 389633002: Move system.* family of APIs to extensions/ (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: Better comments Created 6 years, 5 months ago
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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
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