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Side by Side Diff: extensions/browser/api/system_cpu/cpu_info_provider_win.cc

Issue 389633002: Move system.* family of APIs to extensions/ (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: No ash/ dependency anymore Created 6 years, 3 months ago
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1 // Copyright 2014 The Chromium Authors. All rights reserved. 1 // Copyright 2014 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be 2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file. 3 // found in the LICENSE file.
4 4
5 #include "chrome/browser/extensions/api/system_cpu/cpu_info_provider.h" 5 #include "extensions/browser/api/system_cpu/cpu_info_provider.h"
6 6
7 #include <windows.h> 7 #include <windows.h>
8 #include <winternl.h> 8 #include <winternl.h>
9 9
10 #include "base/sys_info.h" 10 #include "base/sys_info.h"
11 11
12 namespace extensions { 12 namespace extensions {
13 13
14 namespace { 14 namespace {
15 15
16 const wchar_t kNtdll[] = L"ntdll.dll"; 16 const wchar_t kNtdll[] = L"ntdll.dll";
17 const char kNtQuerySystemInformationName[] = "NtQuerySystemInformation"; 17 const char kNtQuerySystemInformationName[] = "NtQuerySystemInformation";
18 18
19 // See MSDN about NtQuerySystemInformation definition. 19 // See MSDN about NtQuerySystemInformation definition.
20 typedef DWORD (WINAPI *NtQuerySystemInformationPF)(DWORD system_info_class, 20 typedef DWORD(WINAPI* NtQuerySystemInformationPF)(DWORD system_info_class,
21 PVOID system_info, 21 PVOID system_info,
22 ULONG system_info_length, 22 ULONG system_info_length,
23 PULONG return_length); 23 PULONG return_length);
24 24
25 } // namespace 25 } // namespace
26 26
27 bool CpuInfoProvider::QueryCpuTimePerProcessor( 27 bool CpuInfoProvider::QueryCpuTimePerProcessor(
28 std::vector<linked_ptr<api::system_cpu::ProcessorInfo> >* infos) { 28 std::vector<linked_ptr<core_api::system_cpu::ProcessorInfo> >* infos) {
29 DCHECK(infos); 29 DCHECK(infos);
30 30
31 HMODULE ntdll = GetModuleHandle(kNtdll); 31 HMODULE ntdll = GetModuleHandle(kNtdll);
32 CHECK(ntdll != NULL); 32 CHECK(ntdll != NULL);
33 NtQuerySystemInformationPF NtQuerySystemInformation = 33 NtQuerySystemInformationPF NtQuerySystemInformation =
34 reinterpret_cast<NtQuerySystemInformationPF>( 34 reinterpret_cast<NtQuerySystemInformationPF>(
35 ::GetProcAddress(ntdll, kNtQuerySystemInformationName)); 35 ::GetProcAddress(ntdll, kNtQuerySystemInformationName));
36 36
37 CHECK(NtQuerySystemInformation != NULL); 37 CHECK(NtQuerySystemInformation != NULL);
38 38
39 int num_of_processors = base::SysInfo::NumberOfProcessors(); 39 int num_of_processors = base::SysInfo::NumberOfProcessors();
40 scoped_ptr<SYSTEM_PROCESSOR_PERFORMANCE_INFORMATION[]> processor_info( 40 scoped_ptr<SYSTEM_PROCESSOR_PERFORMANCE_INFORMATION[]> processor_info(
41 new SYSTEM_PROCESSOR_PERFORMANCE_INFORMATION[num_of_processors]); 41 new SYSTEM_PROCESSOR_PERFORMANCE_INFORMATION[num_of_processors]);
42 42
43 ULONG returned_bytes = 0, bytes = 43 ULONG returned_bytes = 0,
44 sizeof(SYSTEM_PROCESSOR_PERFORMANCE_INFORMATION) * num_of_processors; 44 bytes = sizeof(SYSTEM_PROCESSOR_PERFORMANCE_INFORMATION) *
45 if (!NT_SUCCESS(NtQuerySystemInformation( 45 num_of_processors;
46 SystemProcessorPerformanceInformation, 46 if (!NT_SUCCESS(
47 processor_info.get(), bytes, &returned_bytes))) 47 NtQuerySystemInformation(SystemProcessorPerformanceInformation,
48 processor_info.get(),
49 bytes,
50 &returned_bytes)))
48 return false; 51 return false;
49 52
50 int returned_num_of_processors = 53 int returned_num_of_processors =
51 returned_bytes / sizeof(SYSTEM_PROCESSOR_PERFORMANCE_INFORMATION); 54 returned_bytes / sizeof(SYSTEM_PROCESSOR_PERFORMANCE_INFORMATION);
52 55
53 if (returned_num_of_processors != num_of_processors) 56 if (returned_num_of_processors != num_of_processors)
54 return false; 57 return false;
55 58
56 DCHECK_EQ(num_of_processors, static_cast<int>(infos->size())); 59 DCHECK_EQ(num_of_processors, static_cast<int>(infos->size()));
57 for (int i = 0; i < returned_num_of_processors; ++i) { 60 for (int i = 0; i < returned_num_of_processors; ++i) {
58 double kernel = static_cast<double>(processor_info[i].KernelTime.QuadPart), 61 double kernel = static_cast<double>(processor_info[i].KernelTime.QuadPart),
59 user = static_cast<double>(processor_info[i].UserTime.QuadPart), 62 user = static_cast<double>(processor_info[i].UserTime.QuadPart),
60 idle = static_cast<double>(processor_info[i].IdleTime.QuadPart); 63 idle = static_cast<double>(processor_info[i].IdleTime.QuadPart);
61 64
62 // KernelTime needs to be fixed-up, because it includes both idle time and 65 // KernelTime needs to be fixed-up, because it includes both idle time and
63 // real kernel time. 66 // real kernel time.
64 infos->at(i)->usage.kernel = kernel - idle; 67 infos->at(i)->usage.kernel = kernel - idle;
65 infos->at(i)->usage.user = user; 68 infos->at(i)->usage.user = user;
66 infos->at(i)->usage.idle = idle; 69 infos->at(i)->usage.idle = idle;
67 infos->at(i)->usage.total = kernel + user; 70 infos->at(i)->usage.total = kernel + user;
68 } 71 }
69 72
70 return true; 73 return true;
71 } 74 }
72 75
73 } // namespace extensions 76 } // namespace extensions
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