base/sys_info_openbsd.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/param.h>
   8 #include <sys/shm.h>
   9 #include <sys/sysctl.h>
  10
  11 #include "base/logging.h"
  12
  13 namespace base {
  14
  15 int SysInfo::NumberOfProcessors() {
  16   int mib[] = { CTL_HW, HW_NCPU };
  17   int ncpu;
  18   size_t size = sizeof(ncpu);
  19   if (sysctl(mib, arraysize(mib), &ncpu, &size, NULL, 0) == -1) {
  20     NOTREACHED();
  21     return 1;
  22   }
  23   return ncpu;
  24 }
  25
  26 int64 SysInfo::AmountOfPhysicalMemory() {
  27   long pages = sysconf(_SC_PHYS_PAGES);
  28   long page_size = sysconf(_SC_PAGESIZE);
  29   if (pages == -1 || page_size == -1) {
  30     NOTREACHED();
  31     return 0;
  32   }
  33
  34   return static_cast<int64>(pages) * page_size;
  35 }
  36
  37 size_t SysInfo::MaxSharedMemorySize() {
  38   int mib[] = { CTL_KERN, KERN_SHMINFO, KERN_SHMINFO_SHMMAX };
  39   size_t limit;
  40   size_t size = sizeof(limit);
  41   if (sysctl(mib, arraysize(mib), &limit, &size, NULL, 0) < 0) {
  42     NOTREACHED();
  43     return 0;
  44   }
  45   return limit;
  46 }
  47
  48 }  // namespace base