robert.nagy@gmail.com | ea54e46 | 2011-10-25 07:05:27 +0900 | [diff] [blame] | 1 | // Copyright (c) 2011 The Chromium Authors. All rights reserved. |
evan@chromium.org | fae7268 | 2009-11-24 06:57:11 +0900 | [diff] [blame] | 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_info.h" |
| 6 | |
avi | a6a6a68 | 2015-12-27 07:15:14 +0900 | [diff] [blame^] | 7 | #include <stddef.h> |
| 8 | #include <stdint.h> |
| 9 | |
robert.nagy@gmail.com | ea54e46 | 2011-10-25 07:05:27 +0900 | [diff] [blame] | 10 | #include <limits> |
| 11 | |
brettw@chromium.org | 01f3da4 | 2014-08-14 05:22:14 +0900 | [diff] [blame] | 12 | #include "base/files/file_util.h" |
rmcilroy@chromium.org | e6d3510 | 2013-11-05 05:50:14 +0900 | [diff] [blame] | 13 | #include "base/lazy_instance.h" |
evan@chromium.org | fae7268 | 2009-11-24 06:57:11 +0900 | [diff] [blame] | 14 | #include "base/logging.h" |
ljagielski | 8af7af7 | 2015-04-14 22:45:42 +0900 | [diff] [blame] | 15 | #include "base/numerics/safe_conversions.h" |
brettw@chromium.org | abcde5c | 2013-02-07 11:57:22 +0900 | [diff] [blame] | 16 | #include "base/strings/string_number_conversions.h" |
jochen@chromium.org | 4abdb3e | 2013-11-20 20:14:51 +0900 | [diff] [blame] | 17 | #include "base/sys_info_internal.h" |
avi | a6a6a68 | 2015-12-27 07:15:14 +0900 | [diff] [blame^] | 18 | #include "build/build_config.h" |
evan@chromium.org | fae7268 | 2009-11-24 06:57:11 +0900 | [diff] [blame] | 19 | |
mdempsky@google.com | 9272150 | 2013-04-10 11:22:15 +0900 | [diff] [blame] | 20 | namespace { |
evan@chromium.org | fae7268 | 2009-11-24 06:57:11 +0900 | [diff] [blame] | 21 | |
avi | 95a2f37 | 2015-12-09 09:44:49 +0900 | [diff] [blame] | 22 | int64_t AmountOfMemory(int pages_name) { |
mdempsky@google.com | 9272150 | 2013-04-10 11:22:15 +0900 | [diff] [blame] | 23 | long pages = sysconf(pages_name); |
| 24 | long page_size = sysconf(_SC_PAGESIZE); |
evan@chromium.org | fae7268 | 2009-11-24 06:57:11 +0900 | [diff] [blame] | 25 | if (pages == -1 || page_size == -1) { |
| 26 | NOTREACHED(); |
| 27 | return 0; |
| 28 | } |
avi | 95a2f37 | 2015-12-09 09:44:49 +0900 | [diff] [blame] | 29 | return static_cast<int64_t>(pages) * page_size; |
evan@chromium.org | fae7268 | 2009-11-24 06:57:11 +0900 | [diff] [blame] | 30 | } |
| 31 | |
avi | 95a2f37 | 2015-12-09 09:44:49 +0900 | [diff] [blame] | 32 | int64_t AmountOfPhysicalMemory() { |
rmcilroy@chromium.org | e6d3510 | 2013-11-05 05:50:14 +0900 | [diff] [blame] | 33 | return AmountOfMemory(_SC_PHYS_PAGES); |
| 34 | } |
| 35 | |
avi | 95a2f37 | 2015-12-09 09:44:49 +0900 | [diff] [blame] | 36 | uint64_t MaxSharedMemorySize() { |
rmcilroy@chromium.org | e6d3510 | 2013-11-05 05:50:14 +0900 | [diff] [blame] | 37 | std::string contents; |
| 38 | base::ReadFileToString(base::FilePath("/proc/sys/kernel/shmmax"), &contents); |
| 39 | DCHECK(!contents.empty()); |
| 40 | if (!contents.empty() && contents[contents.length() - 1] == '\n') { |
| 41 | contents.erase(contents.length() - 1); |
| 42 | } |
| 43 | |
avi | 95a2f37 | 2015-12-09 09:44:49 +0900 | [diff] [blame] | 44 | uint64_t limit; |
brettw@chromium.org | 5acbd2d | 2014-08-16 01:25:18 +0900 | [diff] [blame] | 45 | if (!base::StringToUint64(contents, &limit)) { |
rmcilroy@chromium.org | e6d3510 | 2013-11-05 05:50:14 +0900 | [diff] [blame] | 46 | limit = 0; |
| 47 | } |
danakj | a7ea666 | 2015-03-10 07:27:25 +0900 | [diff] [blame] | 48 | DCHECK_GT(limit, 0u); |
ljagielski | 8af7af7 | 2015-04-14 22:45:42 +0900 | [diff] [blame] | 49 | return limit; |
rmcilroy@chromium.org | e6d3510 | 2013-11-05 05:50:14 +0900 | [diff] [blame] | 50 | } |
| 51 | |
jochen@chromium.org | 4abdb3e | 2013-11-20 20:14:51 +0900 | [diff] [blame] | 52 | base::LazyInstance< |
avi | 95a2f37 | 2015-12-09 09:44:49 +0900 | [diff] [blame] | 53 | base::internal::LazySysInfoValue<int64_t, AmountOfPhysicalMemory>>::Leaky |
rmcilroy@chromium.org | e6d3510 | 2013-11-05 05:50:14 +0900 | [diff] [blame] | 54 | g_lazy_physical_memory = LAZY_INSTANCE_INITIALIZER; |
jochen@chromium.org | 4abdb3e | 2013-11-20 20:14:51 +0900 | [diff] [blame] | 55 | base::LazyInstance< |
avi | 95a2f37 | 2015-12-09 09:44:49 +0900 | [diff] [blame] | 56 | base::internal::LazySysInfoValue<uint64_t, MaxSharedMemorySize>>::Leaky |
rmcilroy@chromium.org | e6d3510 | 2013-11-05 05:50:14 +0900 | [diff] [blame] | 57 | g_lazy_max_shared_memory = LAZY_INSTANCE_INITIALIZER; |
| 58 | |
dglazkov@chromium.org | 69cd2b5 | 2013-10-30 05:14:54 +0900 | [diff] [blame] | 59 | } // namespace |
rmcilroy@chromium.org | 75d0ba2 | 2013-10-30 04:32:45 +0900 | [diff] [blame] | 60 | |
dglazkov@chromium.org | 69cd2b5 | 2013-10-30 05:14:54 +0900 | [diff] [blame] | 61 | namespace base { |
| 62 | |
| 63 | // static |
avi | 95a2f37 | 2015-12-09 09:44:49 +0900 | [diff] [blame] | 64 | int64_t SysInfo::AmountOfAvailablePhysicalMemory() { |
dglazkov@chromium.org | 69cd2b5 | 2013-10-30 05:14:54 +0900 | [diff] [blame] | 65 | return AmountOfMemory(_SC_AVPHYS_PAGES); |
| 66 | } |
| 67 | |
| 68 | // static |
avi | 95a2f37 | 2015-12-09 09:44:49 +0900 | [diff] [blame] | 69 | int64_t SysInfo::AmountOfPhysicalMemory() { |
rmcilroy@chromium.org | e6d3510 | 2013-11-05 05:50:14 +0900 | [diff] [blame] | 70 | return g_lazy_physical_memory.Get().value(); |
| 71 | } |
| 72 | |
| 73 | // static |
avi | 95a2f37 | 2015-12-09 09:44:49 +0900 | [diff] [blame] | 74 | uint64_t SysInfo::MaxSharedMemorySize() { |
rmcilroy@chromium.org | e6d3510 | 2013-11-05 05:50:14 +0900 | [diff] [blame] | 75 | return g_lazy_max_shared_memory.Get().value(); |
evan@chromium.org | fae7268 | 2009-11-24 06:57:11 +0900 | [diff] [blame] | 76 | } |
| 77 | |
dglazkov@chromium.org | 69cd2b5 | 2013-10-30 05:14:54 +0900 | [diff] [blame] | 78 | // static |
| 79 | std::string SysInfo::CPUModelName() { |
zelidrag@chromium.org | cedb267 | 2013-05-06 14:35:27 +0900 | [diff] [blame] | 80 | #if defined(OS_CHROMEOS) && defined(ARCH_CPU_ARMEL) |
| 81 | const char kCpuModelPrefix[] = "Hardware"; |
| 82 | #else |
| 83 | const char kCpuModelPrefix[] = "model name"; |
| 84 | #endif |
hongbo.min@intel.com | 893f7d6 | 2012-09-08 18:53:01 +0900 | [diff] [blame] | 85 | std::string contents; |
dglazkov@chromium.org | 69cd2b5 | 2013-10-30 05:14:54 +0900 | [diff] [blame] | 86 | ReadFileToString(FilePath("/proc/cpuinfo"), &contents); |
hongbo.min@intel.com | 893f7d6 | 2012-09-08 18:53:01 +0900 | [diff] [blame] | 87 | DCHECK(!contents.empty()); |
| 88 | if (!contents.empty()) { |
| 89 | std::istringstream iss(contents); |
| 90 | std::string line; |
zelidrag@chromium.org | cedb267 | 2013-05-06 14:35:27 +0900 | [diff] [blame] | 91 | while (std::getline(iss, line)) { |
| 92 | if (line.compare(0, strlen(kCpuModelPrefix), kCpuModelPrefix) == 0) { |
hongbo.min@intel.com | 893f7d6 | 2012-09-08 18:53:01 +0900 | [diff] [blame] | 93 | size_t pos = line.find(": "); |
| 94 | return line.substr(pos + 2); |
| 95 | } |
| 96 | } |
| 97 | } |
| 98 | return std::string(); |
| 99 | } |
| 100 | |
evan@chromium.org | fae7268 | 2009-11-24 06:57:11 +0900 | [diff] [blame] | 101 | } // namespace base |