史上最全的iOS各種設備信息獲取總結(iPhone 12已更新)

更新至iPhone 12 Pro Max

為了統(tǒng)計用戶信息闻蛀、下發(fā)廣告匪傍，服務器端往往需要手機用戶設備及app的各種信息，下面講述一下各種信息的獲取方式：

點擊下載以上展示效果的GitHub源碼

一行代碼就搞定的統(tǒng)一來役衡！

    // 這個方法后面會列出來
    NSString *deviceName = [self getDeviceName];
    NSLog(@"設備型號-->%@", deviceName);
    
    NSString *iPhoneName = [UIDevice currentDevice].name;
    NSLog(@"iPhone名稱-->%@", iPhoneName); 
    
    NSString *appVerion = [[[NSBundle mainBundle] infoDictionary] objectForKey:@"CFBundleShortVersionString"];
    NSLog(@"app版本號-->%@", appVerion);
 
    CGFloat batteryLevel = [[UIDevice currentDevice] batteryLevel];
    NSLog(@"電池電量-->%f", batteryLevel);
    
    NSString *localizedModel = [UIDevice currentDevice].localizedModel;
    NSLog(@"localizedModel-->%@", localizedModel);
    
    NSString *systemName = [UIDevice currentDevice].systemName;
    NSLog(@"當前系統(tǒng)名稱-->%@", systemName);
    
    NSString *systemVersion = [UIDevice currentDevice].systemVersion;
    NSLog(@"當前系統(tǒng)版本號-->%@", systemVersion);

    struct utsname systemInfo;
    uname(&systemInfo);
    NSString *device_model = [NSString stringWithCString:systemInfo.machine encoding:NSUTF8StringEncoding];
    NSLog(@"device_model-->%@", device_model);

    // 這個方法后面會單獨列出
    NSString *macAddress = [self getMacAddress];
    NSLog(@"macAddress-->%@", macAddress);
    
    // 這個方法后面會單獨列出
    NSString *deviceIP = [self getDeviceIPAddresses];
    NSLog(@"deviceIP-->%@", deviceIP);

   // 設備上次重啟的時間
   NSTimeInterval time = [[NSProcessInfo processInfo] systemUptime];
   NSDate *lastRestartDate = [[NSDate alloc] initWithTimeIntervalSinceNow:(0 - time)];

廣告位標識符：在同一個設備上的所有App都會取到相同的值，是蘋果專門給各廣告提供商用來追蹤用戶而設的薪棒，用戶可以在設置|隱私|廣告追蹤里重置此id的值手蝎，或限制此id的使用，故此id有可能會取不到值俐芯，但好在Apple默認是允許追蹤的棵介，而且一般用戶都不知道有這么個設置，所以基本上用來監(jiān)測推廣效果吧史，是戳戳有余了

    NSString *idfa = [[[ASIdentifierManager sharedManager] advertisingIdentifier] UUIDString];
    NSLog(@"廣告位標識符idfa-->%@", idfa);

UUID是Universally Unique Identifier的縮寫邮辽，中文意思是通用唯一識別碼。它是讓分布式系統(tǒng)中的所有元素贸营，都能有唯一的辨識資訊吨述，而不需要透過中央控制端來做辨識資訊的指定。這樣钞脂，每個人都可以建立不與其它人沖突的 UUID揣云。在此情況下，就不需考慮數(shù)據(jù)庫建立時的名稱重復問題冰啃。蘋果公司建議使用UUID為應用生成唯一標識字符串邓夕。

    NSString *uuid = [[[UIDevice currentDevice] identifierForVendor] UUIDString];
    NSLog(@"唯一識別碼uuid-->%@", uuid);

獲取設備型號

// 獲取設備型號然后手動轉(zhuǎn)化為對應名稱
- (NSString *)getDeviceName
{
    // 需要#import "sys/utsname.h"
    struct utsname systemInfo;
    uname(&systemInfo);
    NSString *deviceString = [NSString stringWithCString:systemInfo.machine encoding:NSUTF8StringEncoding];
    
    if ([deviceString isEqualToString:@"iPhone3,1"])    return @"iPhone 4";
    if ([deviceString isEqualToString:@"iPhone3,2"])    return @"iPhone 4";
    if ([deviceString isEqualToString:@"iPhone3,3"])    return @"iPhone 4";
    if ([deviceString isEqualToString:@"iPhone4,1"])    return @"iPhone 4S";
    if ([deviceString isEqualToString:@"iPhone5,1"])    return @"iPhone 5";
    if ([deviceString isEqualToString:@"iPhone5,2"])    return @"iPhone 5 (GSM+CDMA)";
    if ([deviceString isEqualToString:@"iPhone5,3"])    return @"iPhone 5c (GSM)";
    if ([deviceString isEqualToString:@"iPhone5,4"])    return @"iPhone 5c (GSM+CDMA)";
    if ([deviceString isEqualToString:@"iPhone6,1"])    return @"iPhone 5s (GSM)";
    if ([deviceString isEqualToString:@"iPhone6,2"])    return @"iPhone 5s (GSM+CDMA)";
    if ([deviceString isEqualToString:@"iPhone7,1"])    return @"iPhone 6 Plus";
    if ([deviceString isEqualToString:@"iPhone7,2"])    return @"iPhone 6";
    if ([deviceString isEqualToString:@"iPhone8,1"])    return @"iPhone 6s";
    if ([deviceString isEqualToString:@"iPhone8,2"])    return @"iPhone 6s Plus";
    if ([deviceString isEqualToString:@"iPhone8,4"])    return @"iPhone SE";
    // 日行兩款手機型號均為日本獨占，可能使用索尼FeliCa支付方案而不是蘋果支付
    if ([deviceString isEqualToString:@"iPhone9,1"])    return @"國行阎毅、日版翎迁、港行iPhone 7";
    if ([deviceString isEqualToString:@"iPhone9,2"])    return @"港行、國行iPhone 7 Plus";
    if ([deviceString isEqualToString:@"iPhone9,3"])    return @"美版净薛、臺版iPhone 7";
    if ([deviceString isEqualToString:@"iPhone9,4"])    return @"美版、臺版iPhone 7 Plus";
    if ([deviceString isEqualToString:@"iPhone10,1"])   return @"國行(A1863)蒲拉、日行(A1906)iPhone 8";
    if ([deviceString isEqualToString:@"iPhone10,4"])   return @"美版(Global/A1905)iPhone 8";
    if ([deviceString isEqualToString:@"iPhone10,2"])   return @"國行(A1864)肃拜、日行(A1898)iPhone 8 Plus";
    if ([deviceString isEqualToString:@"iPhone10,5"])   return @"美版(Global/A1897)iPhone 8 Plus";
    if ([deviceString isEqualToString:@"iPhone10,3"])   return @"國行(A1865)、日行(A1902)iPhone X";
    if ([deviceString isEqualToString:@"iPhone10,6"])   return @"美版(Global/A1901)iPhone X";
    if ([deviceString isEqualToString:@"iPhone11,2"])   return @"iPhone XS";
    if ([deviceString isEqualToString:@"iPhone11,4"])   return @"iPhone XS Max";
    if ([deviceString isEqualToString:@"iPhone11,6"])   return @"iPhone XS Max";
    if ([deviceString isEqualToString:@"iPhone11,8"])   return @"iPhone XR";
    if ([deviceString isEqualToString:@"iPhone12,1"])   return @"iPhone 11";
    if ([deviceString isEqualToString:@"iPhone12,3"])   return @"iPhone 11 Pro";
    if ([deviceString isEqualToString:@"iPhone12,5"])   return @"iPhone 11 Pro Max";
    if ([deviceString isEqualToString:@"iPhone12,8"])   return @"iPhone SE 2";
    if ([deviceString isEqualToString:@"iPhone13,1"])   return @"iPhone 12 mini";
    if ([deviceString isEqualToString:@"iPhone13,2"])   return @"iPhone 12";
    if ([deviceString isEqualToString:@"iPhone13,3"])   return @"iPhone 12 Pro";
    if ([deviceString isEqualToString:@"iPhone13,4"])   return @"iPhone 12 Pro Max";
    
    if ([deviceString isEqualToString:@"iPod1,1"])      return @"iPod Touch 1G";
    if ([deviceString isEqualToString:@"iPod2,1"])      return @"iPod Touch 2G";
    if ([deviceString isEqualToString:@"iPod3,1"])      return @"iPod Touch 3G";
    if ([deviceString isEqualToString:@"iPod4,1"])      return @"iPod Touch 4G";
    if ([deviceString isEqualToString:@"iPod5,1"])      return @"iPod Touch (5 Gen)";
    
    if ([deviceString isEqualToString:@"iPad1,1"])      return @"iPad";
    if ([deviceString isEqualToString:@"iPad1,2"])      return @"iPad 3G";
    if ([deviceString isEqualToString:@"iPad2,1"])      return @"iPad 2 (WiFi)";
    if ([deviceString isEqualToString:@"iPad2,2"])      return @"iPad 2";
    if ([deviceString isEqualToString:@"iPad2,3"])      return @"iPad 2 (CDMA)";
    if ([deviceString isEqualToString:@"iPad2,4"])      return @"iPad 2";
    if ([deviceString isEqualToString:@"iPad2,5"])      return @"iPad Mini (WiFi)";
    if ([deviceString isEqualToString:@"iPad2,6"])      return @"iPad Mini";
    if ([deviceString isEqualToString:@"iPad2,7"])      return @"iPad Mini (GSM+CDMA)";
    if ([deviceString isEqualToString:@"iPad3,1"])      return @"iPad 3 (WiFi)";
    if ([deviceString isEqualToString:@"iPad3,2"])      return @"iPad 3 (GSM+CDMA)";
    if ([deviceString isEqualToString:@"iPad3,3"])      return @"iPad 3";
    if ([deviceString isEqualToString:@"iPad3,4"])      return @"iPad 4 (WiFi)";
    if ([deviceString isEqualToString:@"iPad3,5"])      return @"iPad 4";
    if ([deviceString isEqualToString:@"iPad3,6"])      return @"iPad 4 (GSM+CDMA)";
    if ([deviceString isEqualToString:@"iPad4,1"])      return @"iPad Air (WiFi)";
    if ([deviceString isEqualToString:@"iPad4,2"])      return @"iPad Air (Cellular)";
    if ([deviceString isEqualToString:@"iPad4,4"])      return @"iPad Mini 2 (WiFi)";
    if ([deviceString isEqualToString:@"iPad4,5"])      return @"iPad Mini 2 (Cellular)";
    if ([deviceString isEqualToString:@"iPad4,6"])      return @"iPad Mini 2";
    if ([deviceString isEqualToString:@"iPad4,7"])      return @"iPad Mini 3";
    if ([deviceString isEqualToString:@"iPad4,8"])      return @"iPad Mini 3";
    if ([deviceString isEqualToString:@"iPad4,9"])      return @"iPad Mini 3";
    if ([deviceString isEqualToString:@"iPad5,1"])      return @"iPad Mini 4 (WiFi)";
    if ([deviceString isEqualToString:@"iPad5,2"])      return @"iPad Mini 4 (LTE)";
    if ([deviceString isEqualToString:@"iPad5,3"])      return @"iPad Air 2";
    if ([deviceString isEqualToString:@"iPad5,4"])      return @"iPad Air 2";
    if ([deviceString isEqualToString:@"iPad6,3"])      return @"iPad Pro 9.7";
    if ([deviceString isEqualToString:@"iPad6,4"])      return @"iPad Pro 9.7";
    if ([deviceString isEqualToString:@"iPad6,7"])      return @"iPad Pro 12.9";
    if ([deviceString isEqualToString:@"iPad6,8"])      return @"iPad Pro 12.9";
    if ([deviceString isEqualToString:@"iPad6,11"])    return @"iPad 5 (WiFi)";
    if ([deviceString isEqualToString:@"iPad6,12"])    return @"iPad 5 (Cellular)";
    if ([deviceString isEqualToString:@"iPad7,1"])     return @"iPad Pro 12.9 inch 2nd gen (WiFi)";
    if ([deviceString isEqualToString:@"iPad7,2"])     return @"iPad Pro 12.9 inch 2nd gen (Cellular)";
    if ([deviceString isEqualToString:@"iPad7,3"])     return @"iPad Pro 10.5 inch (WiFi)";
    if ([deviceString isEqualToString:@"iPad7,4"])     return @"iPad Pro 10.5 inch (Cellular)";
    if ([deviceString isEqualToString:@"iPad7,5"])     return @"iPad 6th generation";
    if ([deviceString isEqualToString:@"iPad7,6"])     return @"iPad 6th generation";
    if ([deviceString isEqualToString:@"iPad8,1"])     return @"iPad Pro (11-inch)";
    if ([deviceString isEqualToString:@"iPad8,2"])     return @"iPad Pro (11-inch)";
    if ([deviceString isEqualToString:@"iPad8,3"])     return @"iPad Pro (11-inch)";
    if ([deviceString isEqualToString:@"iPad8,4"])     return @"iPad Pro (11-inch)";
    if ([deviceString isEqualToString:@"iPad8,5"])     return @"iPad Pro (12.9-inch) (3rd generation)";
    if ([deviceString isEqualToString:@"iPad8,6"])     return @"iPad Pro (12.9-inch) (3rd generation)";
    if ([deviceString isEqualToString:@"iPad8,7"])     return @"iPad Pro (12.9-inch) (3rd generation)";
    if ([deviceString isEqualToString:@"iPad8,8"])     return @"iPad Pro (12.9-inch) (3rd generation)";
    if ([deviceString isEqualToString:@"iPad8,9"])     return @"iPad Pro (11-inch) (2rd generation)";
    if ([deviceString isEqualToString:@"iPad8,10"])   return @"iPad Pro (11-inch) (2rd generation)";
    if ([deviceString isEqualToString:@"iPad8,11"])   return @"iPad Pro (12.9-inch) (4rd generation)";
    if ([deviceString isEqualToString:@"iPad8,12"])   return @"iPad Pro (12.9-inch) (4rd generation)";

    
   if ([deviceString isEqualToString:@"AppleTV2,1"])    return @"Apple TV 2";
   if ([deviceString isEqualToString:@"AppleTV3,1"])    return @"Apple TV 3";
   if ([deviceString isEqualToString:@"AppleTV3,2"])    return @"Apple TV 3";
   if ([deviceString isEqualToString:@"AppleTV5,3"])    return @"Apple TV 4";

    if ([deviceString isEqualToString:@"i386"])         return @"Simulator";
    if ([deviceString isEqualToString:@"x86_64"])       return @"Simulator";
    
    return deviceString;
}

獲取 iPhone 設備顏色/外殼顏色

#warning 該方法是私有API雌团，上線會被拒
// 由于每款手機同一顏色具體色號不一樣燃领，如 iPhone 6和 iPhone SE粉色的兩個具體色值是不一樣的，因此在這里只能返回一個色號
UIDevice *device = [UIDevice currentDevice];
SEL selector = NSSelectorFromString(@"deviceInfoForKey:");
if (![device respondsToSelector:selector]) {
    selector = NSSelectorFromString(@"_deviceInfoForKey:");
}
if ([device respondsToSelector:selector]) {
    // 消除警告“performSelector may cause a leak because its selector is unknown”
    IMP imp = [device methodForSelector:selector];
    NSString * (*func)(id, SEL, NSString *) = (void *)imp;
    
    NSString *deviceColor  = func(device, selector, @"DeviceColor");
    NSString *deviceEnclosureColor  = func(device, selector, @"DeviceEnclosureColor");
    NSLog(@"deviceColor --> %@ \n @"deviceEnclosureColor --> %@ ", deviceColor, deviceEnclosureColor);
}

這里是一些已知的設備顏色

mac 地址

- (NSString *)getMacAddress {
    int mib[6];
    size_t len;
    char *buf;
    unsigned char *ptr;
    struct if_msghdr *ifm;
    struct sockaddr_dl *sdl;
    
    mib[0] = CTL_NET;
    mib[1] = AF_ROUTE;
    mib[2] = 0;
    mib[3] = AF_LINK;
    mib[4] = NET_RT_IFLIST;
    
    if ((mib[5] = if_nametoindex("en0")) == 0) {
        printf("Error: if_nametoindex error/n");
        return NULL;
    }
    
    if (sysctl(mib, 6, NULL, &len, NULL, 0) < 0) {
        printf("Error: sysctl, take 1/n");
        return NULL;
    }
    
    if ((buf = malloc(len)) == NULL) {
        printf("Could not allocate memory. error!/n");
        return NULL;
    }
    
    if (sysctl(mib, 6, buf, &len, NULL, 0) < 0) {
        printf("Error: sysctl, take 2");
        return NULL;
    }
    
    ifm = (struct if_msghdr *)buf;
    sdl = (struct sockaddr_dl *)(ifm + 1);
    ptr = (unsigned char *)LLADDR(sdl);
    
    NSString *outstring = [NSString stringWithFormat:@"%02x%02x%02x%02x%02x%02x", *ptr, *(ptr+1), *(ptr+2), *(ptr+3), *(ptr+4), *(ptr+5)];
    free(buf);
    
    return [outstring uppercaseString];
}

IP地址

- (NSString *)getDeviceIPAddresses {
    
    int sockfd = socket(AF_INET, SOCK_DGRAM, 0);
    
    NSMutableArray *ips = [NSMutableArray array];
    
    int BUFFERSIZE = 4096;
    
    struct ifconf ifc;
    
    char buffer[BUFFERSIZE], *ptr, lastname[IFNAMSIZ], *cptr;
    
    struct ifreq *ifr, ifrcopy;
    
    ifc.ifc_len = BUFFERSIZE;
    ifc.ifc_buf = buffer;
    
    if (ioctl(sockfd, SIOCGIFCONF, &ifc) >= 0){
        
        for (ptr = buffer; ptr < buffer + ifc.ifc_len; ){
            
            ifr = (struct ifreq *)ptr;
            int len = sizeof(struct sockaddr);
            
            if (ifr->ifr_addr.sa_len > len) {
                len = ifr->ifr_addr.sa_len;
            }
            
            ptr += sizeof(ifr->ifr_name) + len;
            if (ifr->ifr_addr.sa_family != AF_INET) continue;
            if ((cptr = (char *)strchr(ifr->ifr_name, ':')) != NULL) *cptr = 0;
            if (strncmp(lastname, ifr->ifr_name, IFNAMSIZ) == 0) continue;
            
            memcpy(lastname, ifr->ifr_name, IFNAMSIZ);
            ifrcopy = *ifr;
            ioctl(sockfd, SIOCGIFFLAGS, &ifrcopy);
            
            if ((ifrcopy.ifr_flags & IFF_UP) == 0) continue;
            
            NSString *ip = [NSString  stringWithFormat:@"%s", inet_ntoa(((struct sockaddr_in *)&ifr->ifr_addr)->sin_addr)];
            [ips addObject:ip];
        }
    }
    
    close(sockfd);
    NSString *deviceIP = @"";
    
    for (int i=0; i < ips.count; i++) {
        if (ips.count > 0) {
            deviceIP = [NSString stringWithFormat:@"%@",ips.lastObject];
        }
    }
    return deviceIP;
}

// CPU總數(shù)目
- (NSUInteger)getCPUCount {
    return [NSProcessInfo processInfo].activeProcessorCount;
}
// 已使用的CPU比例
- (float)getCPUUsage {
    float cpu = 0;
    NSArray *cpus = [self getPerCPUUsage];
    if (cpus.count == 0) return -1;
    for (NSNumber *n in cpus) {
        cpu += n.floatValue;
    }
    return cpu;
}
// 獲取每個cpu的使用比例
- (NSArray *)getPerCPUUsage {
    processor_info_array_t _cpuInfo, _prevCPUInfo = nil;
    mach_msg_type_number_t _numCPUInfo, _numPrevCPUInfo = 0;
    unsigned _numCPUs;
    NSLock *_cpuUsageLock;
    
    int _mib[2U] = { CTL_HW, HW_NCPU };
    size_t _sizeOfNumCPUs = sizeof(_numCPUs);
    int _status = sysctl(_mib, 2U, &_numCPUs, &_sizeOfNumCPUs, NULL, 0U);
    if (_status)
        _numCPUs = 1;
    
    _cpuUsageLock = [[NSLock alloc] init];
    
    natural_t _numCPUsU = 0U;
    kern_return_t err = host_processor_info(mach_host_self(), PROCESSOR_CPU_LOAD_INFO, &_numCPUsU, &_cpuInfo, &_numCPUInfo);
    if (err == KERN_SUCCESS) {
        [_cpuUsageLock lock];
        
        NSMutableArray *cpus = [NSMutableArray new];
        for (unsigned i = 0U; i < _numCPUs; ++i) {
            Float32 _inUse, _total;
            if (_prevCPUInfo) {
                _inUse = (
                          (_cpuInfo[(CPU_STATE_MAX * i) + CPU_STATE_USER]   - _prevCPUInfo[(CPU_STATE_MAX * i) + CPU_STATE_USER])
                          + (_cpuInfo[(CPU_STATE_MAX * i) + CPU_STATE_SYSTEM] - _prevCPUInfo[(CPU_STATE_MAX * i) + CPU_STATE_SYSTEM])
                          + (_cpuInfo[(CPU_STATE_MAX * i) + CPU_STATE_NICE]   - _prevCPUInfo[(CPU_STATE_MAX * i) + CPU_STATE_NICE])
                          );
                _total = _inUse + (_cpuInfo[(CPU_STATE_MAX * i) + CPU_STATE_IDLE] - _prevCPUInfo[(CPU_STATE_MAX * i) + CPU_STATE_IDLE]);
            } else {
                _inUse = _cpuInfo[(CPU_STATE_MAX * i) + CPU_STATE_USER] + _cpuInfo[(CPU_STATE_MAX * i) + CPU_STATE_SYSTEM] + _cpuInfo[(CPU_STATE_MAX * i) + CPU_STATE_NICE];
                _total = _inUse + _cpuInfo[(CPU_STATE_MAX * i) + CPU_STATE_IDLE];
            }
            [cpus addObject:@(_inUse / _total)];
        }
        
        [_cpuUsageLock unlock];
        if (_prevCPUInfo) {
            size_t prevCpuInfoSize = sizeof(integer_t) * _numPrevCPUInfo;
            vm_deallocate(mach_task_self(), (vm_address_t)_prevCPUInfo, prevCpuInfoSize);
        }
        return cpus;
    } else {
        return nil;
    }
}

Disk磁盤空間

// 獲取磁盤總空間
- (int64_t)getTotalDiskSpace {
    NSError *error = nil;
    NSDictionary *attrs = [[NSFileManager defaultManager] attributesOfFileSystemForPath:NSHomeDirectory() error:&error];
    if (error) return -1;
    int64_t space =  [[attrs objectForKey:NSFileSystemSize] longLongValue];
    if (space < 0) space = -1;
    return space;
}
// 獲取未使用的磁盤空間
- (int64_t)getFreeDiskSpace {
    NSError *error = nil;
    NSDictionary *attrs = [[NSFileManager defaultManager] attributesOfFileSystemForPath:NSHomeDirectory() error:&error];
    if (error) return -1;
    int64_t space =  [[attrs objectForKey:NSFileSystemFreeSize] longLongValue];
    if (space < 0) space = -1;
    return space;
}
// 獲取已使用的磁盤空間
- (int64_t)getUsedDiskSpace {
    int64_t totalDisk = [self getTotalDiskSpace];
    int64_t freeDisk = [self getFreeDiskSpace];
    if (totalDisk < 0 || freeDisk < 0) return -1;
    int64_t usedDisk = totalDisk - freeDisk;
    if (usedDisk < 0) usedDisk = -1;
    return usedDisk;
}

Memory內(nèi)存相關數(shù)據(jù)

// 系統(tǒng)總內(nèi)存空間
- (int64_t)getTotalMemory {
    int64_t totalMemory = [[NSProcessInfo processInfo] physicalMemory];
    if (totalMemory < -1) totalMemory = -1;
    return totalMemory;
}

// 活躍的內(nèi)存,正在使用或者很短時間內(nèi)被使用過
- (int64_t)getActiveMemory {
    mach_port_t host_port = mach_host_self();
    mach_msg_type_number_t host_size = sizeof(vm_statistics_data_t) / sizeof(integer_t);
    vm_size_t page_size;
    vm_statistics_data_t vm_stat;
    kern_return_t kern;
    
    kern = host_page_size(host_port, &page_size);
    if (kern != KERN_SUCCESS) return -1;
    kern = host_statistics(host_port, HOST_VM_INFO, (host_info_t)&vm_stat, &host_size);
    if (kern != KERN_SUCCESS) return -1;
    return vm_stat.active_count * page_size;
}

// 最近使用過,但是目前處于不活躍狀態(tài)的內(nèi)存
- (int64_t)getInActiveMemory {
    mach_port_t host_port = mach_host_self();
    mach_msg_type_number_t host_size = sizeof(vm_statistics_data_t) / sizeof(integer_t);
    vm_size_t page_size;
    vm_statistics_data_t vm_stat;
    kern_return_t kern;
    
    kern = host_page_size(host_port, &page_size);
    if (kern != KERN_SUCCESS) return -1;
    kern = host_statistics(host_port, HOST_VM_INFO, (host_info_t)&vm_stat, &host_size);
    if (kern != KERN_SUCCESS) return -1;
    return vm_stat.inactive_count * page_size;
}

// 空閑的內(nèi)存空間
- (int64_t)getFreeMemory {
    mach_port_t host_port = mach_host_self();
    mach_msg_type_number_t host_size = sizeof(vm_statistics_data_t) / sizeof(integer_t);
    vm_size_t page_size;
    vm_statistics_data_t vm_stat;
    kern_return_t kern;
    
    kern = host_page_size(host_port, &page_size);
    if (kern != KERN_SUCCESS) return -1;
    kern = host_statistics(host_port, HOST_VM_INFO, (host_info_t)&vm_stat, &host_size);
    if (kern != KERN_SUCCESS) return -1;
    return vm_stat.free_count * page_size;
}

// 已使用的內(nèi)存空間
- (int64_t)getUsedMemory {
    mach_port_t host_port = mach_host_self();
    mach_msg_type_number_t host_size = sizeof(vm_statistics_data_t) / sizeof(integer_t);
    vm_size_t page_size;
    vm_statistics_data_t vm_stat;
    kern_return_t kern;
    
    kern = host_page_size(host_port, &page_size);
    if (kern != KERN_SUCCESS) return -1;
    kern = host_statistics(host_port, HOST_VM_INFO, (host_info_t)&vm_stat, &host_size);
    if (kern != KERN_SUCCESS) return -1;
    return page_size * (vm_stat.active_count + vm_stat.inactive_count + vm_stat.wire_count);
}

// 用來存放內(nèi)核和數(shù)據(jù)結構的內(nèi)存,framework锦援、用戶級別的應用無法分配
- (int64_t)getWiredMemory {
    mach_port_t host_port = mach_host_self();
    mach_msg_type_number_t host_size = sizeof(vm_statistics_data_t) / sizeof(integer_t);
    vm_size_t page_size;
    vm_statistics_data_t vm_stat;
    kern_return_t kern;
    
    kern = host_page_size(host_port, &page_size);
    if (kern != KERN_SUCCESS) return -1;
    kern = host_statistics(host_port, HOST_VM_INFO, (host_info_t)&vm_stat, &host_size);
    if (kern != KERN_SUCCESS) return -1;
    return vm_stat.wire_count * page_size;
}

// 可釋放的內(nèi)存空間：內(nèi)存吃緊自動釋放猛蔽，針對大對象存放所需的大塊內(nèi)存空間
- (int64_t)getPurgableMemory {
    mach_port_t host_port = mach_host_self();
    mach_msg_type_number_t host_size = sizeof(vm_statistics_data_t) / sizeof(integer_t);
    vm_size_t page_size;
    vm_statistics_data_t vm_stat;
    kern_return_t kern;
    
    kern = host_page_size(host_port, &page_size);
    if (kern != KERN_SUCCESS) return -1;
    kern = host_statistics(host_port, HOST_VM_INFO, (host_info_t)&vm_stat, &host_size);
    if (kern != KERN_SUCCESS) return -1;
    return vm_stat.purgeable_count * page_size;
}

再放一下GitHub源碼

最后編輯于：2021.01.26 11:16:28

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