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      1 // Copyright (c) 2012 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 <ApplicationServices/ApplicationServices.h>
      8 #include <CoreServices/CoreServices.h>
      9 #include <mach/mach_host.h>
     10 #include <mach/mach_init.h>
     11 #include <sys/sysctl.h>
     12 #include <sys/types.h>
     13 
     14 #include "base/logging.h"
     15 #include "base/mac/scoped_mach_port.h"
     16 #include "base/strings/stringprintf.h"
     17 
     18 namespace base {
     19 
     20 // static
     21 std::string SysInfo::OperatingSystemName() {
     22   return "Mac OS X";
     23 }
     24 
     25 // static
     26 std::string SysInfo::OperatingSystemVersion() {
     27   int32 major, minor, bugfix;
     28   OperatingSystemVersionNumbers(&major, &minor, &bugfix);
     29   return base::StringPrintf("%d.%d.%d", major, minor, bugfix);
     30 }
     31 
     32 // static
     33 void SysInfo::OperatingSystemVersionNumbers(int32* major_version,
     34                                             int32* minor_version,
     35                                             int32* bugfix_version) {
     36   Gestalt(gestaltSystemVersionMajor,
     37       reinterpret_cast<SInt32*>(major_version));
     38   Gestalt(gestaltSystemVersionMinor,
     39       reinterpret_cast<SInt32*>(minor_version));
     40   Gestalt(gestaltSystemVersionBugFix,
     41       reinterpret_cast<SInt32*>(bugfix_version));
     42 }
     43 
     44 // static
     45 int64 SysInfo::AmountOfPhysicalMemory() {
     46   struct host_basic_info hostinfo;
     47   mach_msg_type_number_t count = HOST_BASIC_INFO_COUNT;
     48   base::mac::ScopedMachPort host(mach_host_self());
     49   int result = host_info(host,
     50                          HOST_BASIC_INFO,
     51                          reinterpret_cast<host_info_t>(&hostinfo),
     52                          &count);
     53   if (result != KERN_SUCCESS) {
     54     NOTREACHED();
     55     return 0;
     56   }
     57   DCHECK_EQ(HOST_BASIC_INFO_COUNT, count);
     58   return static_cast<int64>(hostinfo.max_mem);
     59 }
     60 
     61 // static
     62 int64 SysInfo::AmountOfAvailablePhysicalMemory() {
     63   base::mac::ScopedMachPort host(mach_host_self());
     64   vm_statistics_data_t vm_info;
     65   mach_msg_type_number_t count = HOST_VM_INFO_COUNT;
     66 
     67   if (host_statistics(host.get(),
     68                       HOST_VM_INFO,
     69                       reinterpret_cast<host_info_t>(&vm_info),
     70                       &count) != KERN_SUCCESS) {
     71     NOTREACHED();
     72     return 0;
     73   }
     74 
     75   return static_cast<int64>(
     76       vm_info.free_count - vm_info.speculative_count) * PAGE_SIZE;
     77 }
     78 
     79 // static
     80 std::string SysInfo::CPUModelName() {
     81   char name[256];
     82   size_t len = arraysize(name);
     83   if (sysctlbyname("machdep.cpu.brand_string", &name, &len, NULL, 0) == 0)
     84     return name;
     85   return std::string();
     86 }
     87 
     88 }  // namespace base
     89