base/sys_info_freebsd.cc

   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
   3 // found in the LICENSE file.
   4
   5 #include "base/sys_info.h"
   6
   7 #include <sys/sysctl.h>
   8
   9 #include "base/logging.h"
  10
  11 namespace base {
  12
  13 int64 SysInfo::AmountOfPhysicalMemory() {
  14   int pages, page_size;
  15   size_t size = sizeof(pages);
  16   sysctlbyname("vm.stats.vm.v_page_count", &pages, &size, NULL, 0);
  17   sysctlbyname("vm.stats.vm.v_page_size", &page_size, &size, NULL, 0);
  18   if (pages == -1 || page_size == -1) {
  19     NOTREACHED();
  20     return 0;
  21   }
  22   return static_cast<int64>(pages) * page_size;
  23 }
  24
  25 // static
  26 size_t SysInfo::MaxSharedMemorySize() {
  27   size_t limit;
  28   size_t size = sizeof(limit);
  29   if (sysctlbyname("kern.ipc.shmmax", &limit, &size, NULL, 0) < 0) {
  30     NOTREACHED();
  31     return 0;
  32   }
  33   return limit;
  34 }
  35
  36 }  // namespace base