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 {
  14
  15 int64 AmountOfMemory(int pages_name) {
  16   long pages = sysconf(pages_name);
  17   long page_size = sysconf(_SC_PAGESIZE);
  18   if (pages == -1 || page_size == -1) {
  19     NOTREACHED();
  20     return 0;
  21   }
  22   return static_cast<int64>(pages) * page_size;
  23 }
  24
  25 }  // namespace
  26
  27 namespace base {
  28
  29 // static
  30 int SysInfo::NumberOfProcessors() {
  31   int mib[] = { CTL_HW, HW_NCPU };
  32   int ncpu;
  33   size_t size = sizeof(ncpu);
  34   if (sysctl(mib, arraysize(mib), &ncpu, &size, NULL, 0) < 0) {
  35     NOTREACHED();
  36     return 1;
  37   }
  38   return ncpu;
  39 }
  40
  41 // static
  42 int64 SysInfo::AmountOfPhysicalMemory() {
  43   return AmountOfMemory(_SC_PHYS_PAGES);
  44 }
  45
  46 // static
  47 int64 SysInfo::AmountOfAvailablePhysicalMemory() {
  48   return AmountOfMemory(_SC_AVPHYS_PAGES);
  49 }
  50
  51 // static
  52 size_t SysInfo::MaxSharedMemorySize() {
  53   int mib[] = { CTL_KERN, KERN_SHMINFO, KERN_SHMINFO_SHMMAX };
  54   size_t limit;
  55   size_t size = sizeof(limit);
  56   if (sysctl(mib, arraysize(mib), &limit, &size, NULL, 0) < 0) {
  57     NOTREACHED();
  58     return 0;
  59   }
  60   return limit;
  61 }
  62
  63 // static
  64 std::string SysInfo::CPUModelName() {
  65   int mib[] = { CTL_HW, HW_MODEL };
  66   char name[256];
  67   size_t len = arraysize(name);
  68   if (sysctl(mib, arraysize(mib), name, &len, NULL, 0) < 0) {
  69     NOTREACHED();
  70     return std::string();
  71   }
  72   return name;
  73 }
  74
  75 }  // namespace base