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// Copyright (c) 2011 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 <errno.h>
#include <string.h>
#include <sys/param.h>
#include <sys/utsname.h>
#include <unistd.h>
#include "base/basictypes.h"
#include "base/file_util.h"
#include "base/logging.h"
#include "base/utf_string_conversions.h"
#if defined(OS_ANDROID)
#include <sys/vfs.h>
#define statvfs statfs // Android uses a statvfs-like statfs struct and call.
#else
#include <sys/statvfs.h>
#endif
namespace base {
#if !defined(OS_OPENBSD)
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.
long res = sysconf(_SC_NPROCESSORS_ONLN);
if (res == -1) {
NOTREACHED();
return 1;
}
return static_cast<int>(res);
}
#endif
// static
int64 SysInfo::AmountOfFreeDiskSpace(const FilePath& path) {
struct statvfs stats;
if (statvfs(path.value().c_str(), &stats) != 0) {
return -1;
}
return static_cast<int64>(stats.f_bavail) * stats.f_frsize;
}
#if !defined(OS_MACOSX)
// static
std::string SysInfo::OperatingSystemName() {
struct utsname info;
if (uname(&info) < 0) {
NOTREACHED();
return "";
}
return std::string(info.sysname);
}
// static
std::string SysInfo::OperatingSystemVersion() {
struct utsname info;
if (uname(&info) < 0) {
NOTREACHED();
return "";
}
return std::string(info.release);
}
#endif
// static
std::string SysInfo::CPUArchitecture() {
struct utsname info;
if (uname(&info) < 0) {
NOTREACHED();
return "";
}
return std::string(info.machine);
}
// static
size_t SysInfo::VMAllocationGranularity() {
return getpagesize();
}
} // namespace base
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