154 lines
4.5 KiB
Plaintext
154 lines
4.5 KiB
Plaintext
// Copyright (c) 2012 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "base/system/sys_info.h"
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#import <UIKit/UIKit.h>
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#include <mach/mach.h>
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#include <stddef.h>
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#include <stdint.h>
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#include <sys/sysctl.h>
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#include <sys/types.h>
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#include "base/logging.h"
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#include "base/mac/scoped_mach_port.h"
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#include "base/process/process_metrics.h"
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#include "base/stl_util.h"
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#include "base/strings/string_util.h"
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#include "base/strings/sys_string_conversions.h"
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namespace base {
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namespace {
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// Queries sysctlbyname() for the given key and returns the value from the
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// system or the empty string on failure.
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std::string GetSysctlValue(const char* key_name) {
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char value[256];
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size_t len = base::size(value);
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if (sysctlbyname(key_name, &value, &len, nullptr, 0) == 0) {
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DCHECK_GE(len, 1u);
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DCHECK_EQ('\0', value[len - 1]);
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return std::string(value, len - 1);
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}
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return std::string();
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}
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} // namespace
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// static
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std::string SysInfo::OperatingSystemName() {
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static dispatch_once_t get_system_name_once;
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static std::string* system_name;
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dispatch_once(&get_system_name_once, ^{
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@autoreleasepool {
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system_name = new std::string(
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SysNSStringToUTF8([[UIDevice currentDevice] systemName]));
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}
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});
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// Examples of returned value: 'iPhone OS' on iPad 5.1.1
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// and iPhone 5.1.1.
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return *system_name;
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}
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// static
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std::string SysInfo::OperatingSystemVersion() {
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static dispatch_once_t get_system_version_once;
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static std::string* system_version;
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dispatch_once(&get_system_version_once, ^{
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@autoreleasepool {
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system_version = new std::string(
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SysNSStringToUTF8([[UIDevice currentDevice] systemVersion]));
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}
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});
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return *system_version;
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}
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// static
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void SysInfo::OperatingSystemVersionNumbers(int32_t* major_version,
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int32_t* minor_version,
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int32_t* bugfix_version) {
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@autoreleasepool {
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std::string system_version = OperatingSystemVersion();
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if (!system_version.empty()) {
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// Try to parse out the version numbers from the string.
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int num_read = sscanf(system_version.c_str(), "%d.%d.%d", major_version,
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minor_version, bugfix_version);
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if (num_read < 1)
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*major_version = 0;
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if (num_read < 2)
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*minor_version = 0;
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if (num_read < 3)
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*bugfix_version = 0;
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}
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}
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}
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// static
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std::string SysInfo::GetIOSBuildNumber() {
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int mib[2] = {CTL_KERN, KERN_OSVERSION};
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unsigned int namelen = sizeof(mib) / sizeof(mib[0]);
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size_t buffer_size = 0;
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sysctl(mib, namelen, nullptr, &buffer_size, nullptr, 0);
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char build_number[buffer_size];
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int result = sysctl(mib, namelen, build_number, &buffer_size, nullptr, 0);
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DCHECK(result == 0);
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return build_number;
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}
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// static
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int64_t SysInfo::AmountOfPhysicalMemoryImpl() {
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struct host_basic_info hostinfo;
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mach_msg_type_number_t count = HOST_BASIC_INFO_COUNT;
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base::mac::ScopedMachSendRight host(mach_host_self());
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int result = host_info(host.get(), HOST_BASIC_INFO,
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reinterpret_cast<host_info_t>(&hostinfo), &count);
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if (result != KERN_SUCCESS) {
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NOTREACHED();
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return 0;
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}
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DCHECK_EQ(HOST_BASIC_INFO_COUNT, count);
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return static_cast<int64_t>(hostinfo.max_mem);
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}
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// static
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int64_t SysInfo::AmountOfAvailablePhysicalMemoryImpl() {
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SystemMemoryInfoKB info;
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if (!GetSystemMemoryInfo(&info))
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return 0;
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// We should add inactive file-backed memory also but there is no such
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// information from iOS unfortunately.
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return static_cast<int64_t>(info.free + info.speculative) * 1024;
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}
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// static
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std::string SysInfo::CPUModelName() {
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return GetSysctlValue("machdep.cpu.brand_string");
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}
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// static
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std::string SysInfo::HardwareModelName() {
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#if TARGET_OS_SIMULATOR
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// On the simulator, "hw.machine" returns "i386" or "x86_64" which doesn't
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// match the expected format, so supply a fake string here.
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return "Simulator1,1";
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#else
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// Note: This uses "hw.machine" instead of "hw.model" like the Mac code,
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// because "hw.model" doesn't always return the right string on some devices.
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return GetSysctlValue("hw.machine");
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#endif
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}
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// static
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SysInfo::HardwareInfo SysInfo::GetHardwareInfoSync() {
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HardwareInfo info;
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info.manufacturer = "Apple Inc.";
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info.model = HardwareModelName();
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DCHECK(IsStringUTF8(info.manufacturer));
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DCHECK(IsStringUTF8(info.model));
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return info;
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}
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} // namespace base
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