| // Copyright (c) 2011 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "base/sys_info.h" |
| |
| #include <sys/sysctl.h> |
| |
| #include "base/logging.h" |
| |
| namespace base { |
| |
| int64 SysInfo::AmountOfPhysicalMemory() { |
| int pages, page_size; |
| size_t size = sizeof(pages); |
| sysctlbyname("vm.stats.vm.v_page_count", &pages, &size, NULL, 0); |
| sysctlbyname("vm.stats.vm.v_page_size", &page_size, &size, NULL, 0); |
| if (pages == -1 || page_size == -1) { |
| NOTREACHED(); |
| return 0; |
| } |
| return static_cast<int64>(pages) * page_size; |
| } |
| |
| // static |
| size_t SysInfo::MaxSharedMemorySize() { |
| size_t limit; |
| size_t size = sizeof(limit); |
| if (sysctlbyname("kern.ipc.shmmax", &limit, &size, NULL, 0) < 0) { |
| NOTREACHED(); |
| return 0; |
| } |
| return limit; |
| } |
| |
| } // namespace base |