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1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2011 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 "base/sys_info.h" | 5 #include "base/sys_info.h" |
6 | 6 |
7 #include <limits> | 7 #include <limits> |
8 | 8 |
9 #include "base/file_util.h" | 9 #include "base/file_util.h" |
10 #include "base/lazy_instance.h" | 10 #include "base/lazy_instance.h" |
11 #include "base/logging.h" | 11 #include "base/logging.h" |
12 #include "base/strings/string_number_conversions.h" | 12 #include "base/strings/string_number_conversions.h" |
| 13 #include "base/sys_info_internal.h" |
13 | 14 |
14 namespace { | 15 namespace { |
15 | 16 |
16 int64 AmountOfMemory(int pages_name) { | 17 int64 AmountOfMemory(int pages_name) { |
17 long pages = sysconf(pages_name); | 18 long pages = sysconf(pages_name); |
18 long page_size = sysconf(_SC_PAGESIZE); | 19 long page_size = sysconf(_SC_PAGESIZE); |
19 if (pages == -1 || page_size == -1) { | 20 if (pages == -1 || page_size == -1) { |
20 NOTREACHED(); | 21 NOTREACHED(); |
21 return 0; | 22 return 0; |
22 } | 23 } |
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40 limit = 0; | 41 limit = 0; |
41 } | 42 } |
42 if (limit < 0 || | 43 if (limit < 0 || |
43 static_cast<uint64>(limit) > std::numeric_limits<size_t>::max()) { | 44 static_cast<uint64>(limit) > std::numeric_limits<size_t>::max()) { |
44 limit = 0; | 45 limit = 0; |
45 } | 46 } |
46 DCHECK(limit > 0); | 47 DCHECK(limit > 0); |
47 return static_cast<size_t>(limit); | 48 return static_cast<size_t>(limit); |
48 } | 49 } |
49 | 50 |
50 template<typename T, T (*F)(void)> | 51 base::LazyInstance< |
51 class LazySysInfoValue { | 52 base::internal::LazySysInfoValue<int64, AmountOfPhysicalMemory> >::Leaky |
52 public: | |
53 LazySysInfoValue() | |
54 : value_(F()) { } | |
55 | |
56 ~LazySysInfoValue() { } | |
57 | |
58 T value() { return value_; } | |
59 | |
60 private: | |
61 const T value_; | |
62 | |
63 DISALLOW_COPY_AND_ASSIGN(LazySysInfoValue); | |
64 }; | |
65 | |
66 base::LazyInstance<LazySysInfoValue<int64, AmountOfPhysicalMemory> >::Leaky | |
67 g_lazy_physical_memory = LAZY_INSTANCE_INITIALIZER; | 53 g_lazy_physical_memory = LAZY_INSTANCE_INITIALIZER; |
68 base::LazyInstance<LazySysInfoValue<size_t, MaxSharedMemorySize> >::Leaky | 54 base::LazyInstance< |
| 55 base::internal::LazySysInfoValue<size_t, MaxSharedMemorySize> >::Leaky |
69 g_lazy_max_shared_memory = LAZY_INSTANCE_INITIALIZER; | 56 g_lazy_max_shared_memory = LAZY_INSTANCE_INITIALIZER; |
70 | 57 |
71 } // namespace | 58 } // namespace |
72 | 59 |
73 namespace base { | 60 namespace base { |
74 | 61 |
75 // static | 62 // static |
76 int64 SysInfo::AmountOfAvailablePhysicalMemory() { | 63 int64 SysInfo::AmountOfAvailablePhysicalMemory() { |
77 return AmountOfMemory(_SC_AVPHYS_PAGES); | 64 return AmountOfMemory(_SC_AVPHYS_PAGES); |
78 } | 65 } |
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104 if (line.compare(0, strlen(kCpuModelPrefix), kCpuModelPrefix) == 0) { | 91 if (line.compare(0, strlen(kCpuModelPrefix), kCpuModelPrefix) == 0) { |
105 size_t pos = line.find(": "); | 92 size_t pos = line.find(": "); |
106 return line.substr(pos + 2); | 93 return line.substr(pos + 2); |
107 } | 94 } |
108 } | 95 } |
109 } | 96 } |
110 return std::string(); | 97 return std::string(); |
111 } | 98 } |
112 | 99 |
113 } // namespace base | 100 } // namespace base |
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