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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
// Copyright (c) 2008 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "base/sys_info.h"
#include "base/basictypes.h"
#include <errno.h>
#include <string.h>
#ifndef ANDROID
#include <sys/statvfs.h>
#endif
#include <sys/utsname.h>
#include <unistd.h>
#if defined(OS_MACOSX)
#include <mach/mach_host.h>
#include <mach/mach_init.h>
#endif
#if defined(OS_NETBSD)
#include <sys/param.h>
#include <sys/sysctl.h>
#endif
#include "base/logging.h"
#include "base/string_util.h"
namespace base {
int SysInfo::NumberOfProcessors() {
// It seems that sysconf returns the number of "logical" processors on both
// mac and linux. So we get the number of "online logical" processors.
#ifdef _SC_NPROCESSORS_ONLN
static long res = sysconf(_SC_NPROCESSORS_ONLN);
#else
static long res = 1;
#endif
if (res == -1) {
NOTREACHED();
return 1;
}
return static_cast<int>(res);
}
// static
int64_t SysInfo::AmountOfPhysicalMemory() {
// _SC_PHYS_PAGES is not part of POSIX and not available on OS X
#if defined(OS_MACOSX)
struct host_basic_info hostinfo;
mach_msg_type_number_t count = HOST_BASIC_INFO_COUNT;
int result = host_info(mach_host_self(),
HOST_BASIC_INFO,
reinterpret_cast<host_info_t>(&hostinfo),
&count);
DCHECK_EQ(HOST_BASIC_INFO_COUNT, count);
if (result != KERN_SUCCESS) {
NOTREACHED();
return 0;
}
return static_cast<int64_t>(hostinfo.max_mem);
#elif defined(OS_NETBSD)
int mib[2];
int rc;
int64_t memSize;
size_t len = sizeof(memSize);
mib[0] = CTL_HW;
mib[1] = HW_PHYSMEM64;
rc = sysctl( mib, 2, &memSize, &len, NULL, 0 );
if (-1 != rc) {
return memSize;
}
return 0;
#else
long pages = sysconf(_SC_PHYS_PAGES);
long page_size = sysconf(_SC_PAGE_SIZE);
if (pages == -1 || page_size == -1) {
NOTREACHED();
return 0;
}
return static_cast<int64_t>(pages) * page_size;
#endif
}
// static
int64_t SysInfo::AmountOfFreeDiskSpace(const std::wstring& path) {
#ifndef ANDROID
struct statvfs stats;
if (statvfs(WideToUTF8(path).c_str(), &stats) != 0) {
return -1;
}
return static_cast<int64_t>(stats.f_bavail) * stats.f_frsize;
#else
return -1;
#endif
}
// static
bool SysInfo::HasEnvVar(const wchar_t* var) {
std::string var_utf8 = WideToUTF8(std::wstring(var));
return getenv(var_utf8.c_str()) != NULL;
}
// static
std::wstring SysInfo::GetEnvVar(const wchar_t* var) {
std::string var_utf8 = WideToUTF8(std::wstring(var));
char* value = getenv(var_utf8.c_str());
if (!value) {
return L"";
} else {
return UTF8ToWide(value);
}
}
// static
std::string SysInfo::OperatingSystemName() {
#if !defined(XP_SOLARIS)
utsname info;
#else
struct utsname info;
#endif
if (uname(&info) < 0) {
NOTREACHED();
return "";
}
return std::string(info.sysname);
}
// static
std::string SysInfo::CPUArchitecture() {
#if !defined(XP_SOLARIS)
utsname info;
#else
struct utsname info;
#endif
if (uname(&info) < 0) {
NOTREACHED();
return "";
}
return std::string(info.machine);
}
// static
void SysInfo::GetPrimaryDisplayDimensions(int* width, int* height) {
NOTIMPLEMENTED();
}
// static
int SysInfo::DisplayCount() {
NOTIMPLEMENTED();
return 1;
}
// static
size_t SysInfo::VMAllocationGranularity() {
return getpagesize();
}
} // namespace base
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