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// Copyright (c) 2012 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 <mach/mach.h>
#include <stddef.h>
#include <stdint.h>
#include <sys/sysctl.h>
#include <sys/types.h>
#import <UIKit/UIKit.h>
#include "base/logging.h"
#include "base/mac/scoped_mach_port.h"
#include "base/mac/scoped_nsautorelease_pool.h"
#include "base/macros.h"
#include "base/strings/sys_string_conversions.h"
namespace base {
// static
std::string SysInfo::OperatingSystemName() {
static dispatch_once_t get_system_name_once;
static std::string* system_name;
dispatch_once(&get_system_name_once, ^{
base::mac::ScopedNSAutoreleasePool pool;
system_name = new std::string(
SysNSStringToUTF8([[UIDevice currentDevice] systemName]));
});
// Examples of returned value: 'iPhone OS' on iPad 5.1.1
// and iPhone 5.1.1.
return *system_name;
}
// static
std::string SysInfo::OperatingSystemVersion() {
static dispatch_once_t get_system_version_once;
static std::string* system_version;
dispatch_once(&get_system_version_once, ^{
base::mac::ScopedNSAutoreleasePool pool;
system_version = new std::string(
SysNSStringToUTF8([[UIDevice currentDevice] systemVersion]));
});
return *system_version;
}
// static
void SysInfo::OperatingSystemVersionNumbers(int32_t* major_version,
int32_t* minor_version,
int32_t* bugfix_version) {
base::mac::ScopedNSAutoreleasePool pool;
std::string system_version = OperatingSystemVersion();
if (!system_version.empty()) {
// Try to parse out the version numbers from the string.
int num_read = sscanf(system_version.c_str(), "%d.%d.%d", major_version,
minor_version, bugfix_version);
if (num_read < 1)
*major_version = 0;
if (num_read < 2)
*minor_version = 0;
if (num_read < 3)
*bugfix_version = 0;
}
}
// static
int64_t SysInfo::AmountOfPhysicalMemory() {
struct host_basic_info hostinfo;
mach_msg_type_number_t count = HOST_BASIC_INFO_COUNT;
base::mac::ScopedMachSendRight host(mach_host_self());
int result = host_info(host.get(),
HOST_BASIC_INFO,
reinterpret_cast<host_info_t>(&hostinfo),
&count);
if (result != KERN_SUCCESS) {
NOTREACHED();
return 0;
}
DCHECK_EQ(HOST_BASIC_INFO_COUNT, count);
return static_cast<int64_t>(hostinfo.max_mem);
}
// static
int64_t SysInfo::AmountOfAvailablePhysicalMemory() {
base::mac::ScopedMachSendRight host(mach_host_self());
vm_statistics_data_t vm_info;
mach_msg_type_number_t count = HOST_VM_INFO_COUNT;
if (host_statistics(host.get(),
HOST_VM_INFO,
reinterpret_cast<host_info_t>(&vm_info),
&count) != KERN_SUCCESS) {
NOTREACHED();
return 0;
}
return static_cast<int64_t>(vm_info.free_count - vm_info.speculative_count) *
PAGE_SIZE;
}
// static
std::string SysInfo::CPUModelName() {
char name[256];
size_t len = arraysize(name);
if (sysctlbyname("machdep.cpu.brand_string", &name, &len, NULL, 0) == 0)
return name;
return std::string();
}
} // namespace base
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