michael@0: // Copyright (c) 2008 The Chromium Authors. All rights reserved.
michael@0: // Use of this source code is governed by a BSD-style license that can be
michael@0: // found in the LICENSE file.
michael@0: 
michael@0: #include "base/sys_info.h"
michael@0: #include "base/basictypes.h"
michael@0: 
michael@0: #include <errno.h>
michael@0: #include <string.h>
michael@0: #ifndef ANDROID
michael@0: #include <sys/statvfs.h>
michael@0: #endif
michael@0: #include <sys/utsname.h>
michael@0: #include <unistd.h>
michael@0: 
michael@0: #if defined(OS_MACOSX)
michael@0: #include <mach/mach_host.h>
michael@0: #include <mach/mach_init.h>
michael@0: #endif
michael@0: 
michael@0: #if defined(OS_NETBSD)
michael@0: #include <sys/param.h>
michael@0: #include <sys/sysctl.h>
michael@0: #endif
michael@0: 
michael@0: #include "base/logging.h"
michael@0: #include "base/string_util.h"
michael@0: 
michael@0: namespace base {
michael@0: 
michael@0: int SysInfo::NumberOfProcessors() {
michael@0:   // It seems that sysconf returns the number of "logical" processors on both
michael@0:   // mac and linux.  So we get the number of "online logical" processors.
michael@0: #ifdef _SC_NPROCESSORS_ONLN
michael@0:   static long res = sysconf(_SC_NPROCESSORS_ONLN);
michael@0: #else
michael@0:   static long res = 1;
michael@0: #endif
michael@0:   if (res == -1) {
michael@0:     NOTREACHED();
michael@0:     return 1;
michael@0:   }
michael@0: 
michael@0:   return static_cast<int>(res);
michael@0: }
michael@0: 
michael@0: // static
michael@0: int64_t SysInfo::AmountOfPhysicalMemory() {
michael@0:   // _SC_PHYS_PAGES is not part of POSIX and not available on OS X
michael@0: #if defined(OS_MACOSX)
michael@0:   struct host_basic_info hostinfo;
michael@0:   mach_msg_type_number_t count = HOST_BASIC_INFO_COUNT;
michael@0:   int result = host_info(mach_host_self(),
michael@0:                          HOST_BASIC_INFO,
michael@0:                          reinterpret_cast<host_info_t>(&hostinfo),
michael@0:                          &count);
michael@0:   DCHECK_EQ(HOST_BASIC_INFO_COUNT, count);
michael@0:   if (result != KERN_SUCCESS) {
michael@0:     NOTREACHED();
michael@0:     return 0;
michael@0:   }
michael@0: 
michael@0:   return static_cast<int64_t>(hostinfo.max_mem);
michael@0: #elif defined(OS_NETBSD)
michael@0:   int mib[2];
michael@0:   int rc;
michael@0:   int64_t memSize;
michael@0:   size_t len = sizeof(memSize);
michael@0: 
michael@0:   mib[0] = CTL_HW;
michael@0:   mib[1] = HW_PHYSMEM64;
michael@0:   rc = sysctl( mib, 2, &memSize, &len, NULL, 0 );
michael@0:   if (-1 != rc)  {
michael@0:     return memSize;
michael@0:   }
michael@0:   return 0;
michael@0: 
michael@0: #else
michael@0:   long pages = sysconf(_SC_PHYS_PAGES);
michael@0:   long page_size = sysconf(_SC_PAGE_SIZE);
michael@0:   if (pages == -1 || page_size == -1) {
michael@0:     NOTREACHED();
michael@0:     return 0;
michael@0:   }
michael@0: 
michael@0:   return static_cast<int64_t>(pages) * page_size;
michael@0: #endif
michael@0: }
michael@0: 
michael@0: // static
michael@0: int64_t SysInfo::AmountOfFreeDiskSpace(const std::wstring& path) {
michael@0: #ifndef ANDROID
michael@0:   struct statvfs stats;
michael@0:   if (statvfs(WideToUTF8(path).c_str(), &stats) != 0) {
michael@0:     return -1;
michael@0:   }
michael@0:   return static_cast<int64_t>(stats.f_bavail) * stats.f_frsize;
michael@0: #else
michael@0:   return -1;
michael@0: #endif
michael@0: }
michael@0: 
michael@0: // static
michael@0: bool SysInfo::HasEnvVar(const wchar_t* var) {
michael@0:   std::string var_utf8 = WideToUTF8(std::wstring(var));
michael@0:   return getenv(var_utf8.c_str()) != NULL;
michael@0: }
michael@0: 
michael@0: // static
michael@0: std::wstring SysInfo::GetEnvVar(const wchar_t* var) {
michael@0:   std::string var_utf8 = WideToUTF8(std::wstring(var));
michael@0:   char* value = getenv(var_utf8.c_str());
michael@0:   if (!value) {
michael@0:     return L"";
michael@0:   } else {
michael@0:     return UTF8ToWide(value);
michael@0:   }
michael@0: }
michael@0: 
michael@0: // static
michael@0: std::string SysInfo::OperatingSystemName() {
michael@0:   utsname info;
michael@0:   if (uname(&info) < 0) {
michael@0:     NOTREACHED();
michael@0:     return "";
michael@0:   }
michael@0:   return std::string(info.sysname);
michael@0: }
michael@0: 
michael@0: // static
michael@0: std::string SysInfo::OperatingSystemVersion() {
michael@0:   utsname info;
michael@0:   if (uname(&info) < 0) {
michael@0:     NOTREACHED();
michael@0:     return "";
michael@0:   }
michael@0:   return std::string(info.release);
michael@0: }
michael@0: 
michael@0: // static
michael@0: std::string SysInfo::CPUArchitecture() {
michael@0:   utsname info;
michael@0:   if (uname(&info) < 0) {
michael@0:     NOTREACHED();
michael@0:     return "";
michael@0:   }
michael@0:   return std::string(info.machine);
michael@0: }
michael@0: 
michael@0: // static
michael@0: void SysInfo::GetPrimaryDisplayDimensions(int* width, int* height) {
michael@0:   NOTIMPLEMENTED();
michael@0: }
michael@0: 
michael@0: // static
michael@0: int SysInfo::DisplayCount() {
michael@0:   NOTIMPLEMENTED();
michael@0:   return 1;
michael@0: }
michael@0: 
michael@0: // static
michael@0: size_t SysInfo::VMAllocationGranularity() {
michael@0:   return getpagesize();
michael@0: }
michael@0: 
michael@0: }  // namespace base