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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 "base/sys_utils.h" | |
6 | |
7 #include "base/base_switches.h" | |
8 #include "base/command_line.h" | |
9 #include "base/lazy_instance.h" | |
10 #include "base/sys_info.h" | |
11 #include "base/sys_info_internal.h" | |
12 | |
13 #if !defined(OS_ANDROID) | |
14 namespace { | |
brettw
2014/06/09 22:49:57
blank lines around this, also check other namespac
c.shu
2014/06/10 17:36:26
Done.
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15 static const int kLowMemoryDeviceThresholdMB = 512; | |
16 | |
17 bool DetectLowEndDevice() { | |
18 CommandLine* command_line = CommandLine::ForCurrentProcess(); | |
19 if (command_line->HasSwitch(switches::kEnableLowEndDeviceMode )) { | |
20 return true; | |
brettw
2014/06/09 22:49:57
Check indenting.
c.shu
2014/06/10 17:36:26
Done.
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21 } | |
22 if (command_line->HasSwitch(switches::kDisableLowEndDeviceMode)) { | |
23 return false; | |
24 } | |
25 | |
26 if (command_line->HasSwitch(switches::kDetectLowEndDevice)) { | |
27 int ram_size_mb = base::SysInfo::AmountOfPhysicalMemoryMB(); | |
28 return (ram_size_mb > 0 && ram_size_mb < kLowMemoryDeviceThresholdMB); | |
29 } | |
30 return false; | |
31 } | |
32 | |
33 static base::LazyInstance< | |
34 base::internal::LazySysInfoValue<bool, DetectLowEndDevice> >::Leaky | |
35 g_lazy_low_end_device = LAZY_INSTANCE_INITIALIZER; | |
36 | |
37 } // namespace | |
38 | |
39 namespace base { | |
40 // static | |
41 bool SysUtils::IsLowEndDevice() { | |
42 return g_lazy_low_end_device.Get().value(); | |
brettw
2014/06/09 22:49:57
I think this leaky stuff is overkill for this use
ostap
2014/06/10 17:05:57
There are several places in base/sys-*.cc where La
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43 } | |
44 } // namespace base | |
45 #endif | |
46 | |
47 namespace base { | |
48 // static | |
49 size_t SysUtils::AmountOfPhysicalMemoryKB() { | |
50 return SysInfo::AmountOfPhysicalMemory() / 1024; | |
51 } | |
52 | |
53 SysUtils::SysUtils() { } | |
54 } // namespace base | |
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