iOS各種設(shè)備信息獲取

//設(shè)備型號(hào)

? ? ?NSString?*deviceName?=?[self?getDeviceName];

????NSLog(@"設(shè)備型號(hào)-->%@",?deviceName);


????NSString?*iPhoneName?=?[UIDevice?currentDevice].name;

????NSLog(@"iPhone名稱-->%@",?iPhoneName);?


????NSString?*appVerion?=?[[[NSBundle?mainBundle]?infoDictionary]?objectForKey:@"CFBundleShortVersionString"];

????NSLog(@"app版本號(hào)-->%@",?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(dāng)前系統(tǒng)名稱-->%@",?systemName);


????NSString?*systemVersion?=?[UIDevice?currentDevice].systemVersion;

????NSLog(@"當(dāng)前系統(tǒng)版本號(hào)-->%@",?systemVersion);


????struct?utsname?systemInfo;

????uname(&systemInfo);

????NSString?*device_model?=?[NSString?stringWithCString:systemInfo.machine?encoding:NSUTF8StringEncoding];

????NSLog(@"device_model-->%@",?device_model);


????// MAC地址

????NSString?*macAddress?=?[self?getMacAddress];

????NSLog(@"macAddress-->%@",?macAddress);


????// IP

????NSString?*deviceIP?=?[self?getDeviceIPAddresses];

????NSLog(@"deviceIP-->%@",?deviceIP);


???//?設(shè)備上次重啟的時(shí)間

???NSTimeInterval?time?=?[[NSProcessInfo?processInfo]?systemUptime];

???NSDate?*lastRestartDate?=?[[NSDate?alloc]?initWithTimeIntervalSinceNow:(0?-?time)];

廣告位標(biāo)識(shí)符：在同一個(gè)設(shè)備上的所有App都會(huì)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(shè)的，用戶可以在 設(shè)置|隱私|廣告追蹤里重置此id的值，或限制此id的使用，故此id有可能會(huì)取不到值，但好在Apple默認(rèn)是允許追蹤的，而且一般用戶都不知道有這么個(gè)設(shè)置，所以基本上用來監(jiān)測推廣效果NSString?*idfa?=?[[[ASIdentifierManager?sharedManager]?advertisingIdentifier]?UUIDString];

????NSLog(@"廣告位標(biāo)識(shí)符idfa-->%@",?idfa);

UUID是Universally Unique Identifier的縮寫，中文意思是通用唯一識(shí)別碼。它是讓分布式系統(tǒng)中的所有元素，都能有唯一的辨識(shí)資訊，而不需要透過中央控制端來做辨識(shí)資訊的指 定。這樣，每個(gè)人都可以建立不與其它人沖突的 UUID。在此情況下，就不需考慮數(shù)據(jù)庫建立時(shí)的名稱重復(fù)問題。蘋果公司建議使用UUID為應(yīng)用生成唯一標(biāo)識(shí)字符串。

NSString?*uuid?=?[[[UIDevice?currentDevice]?identifierForVendor]?UUIDString];

NSLog(@"唯一識(shí)別碼uuid-->%@",?uuid);

獲取設(shè)備型號(hào)//?獲取設(shè)備型號(hào)然后手動(dòng)轉(zhuǎn)化為對(duì)應(yīng)名稱

-?(NSString?*)getDeviceName

{

????//?需要#import?"sys/utsname.h"

????#warning?題主嘔心瀝血總結(jié)！！最全面！親測！全網(wǎng)獨(dú)此一份！！

????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(jī)型號(hào)均為日本獨(dú)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、日版、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、臺(tái)版iPhone?7";

????if?([deviceString?isEqualToString:@"iPhone9,4"])????return?@"美版、臺(tái)版iPhone?7?Plus";

????if?([deviceString?isEqualToString:@"iPhone10,1"])???return?@"國行(A1863)、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)、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:@"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?([machineString?isEqualToString:@"iPad6,11"])????return?@"iPad?5?(WiFi)";

????if?([machineString?isEqualToString:@"iPad6,12"])????return?@"iPad?5?(Cellular)";

????if?([machineString?isEqualToString:@"iPad7,1"])?????return?@"iPad?Pro?12.9?inch?2nd?gen?(WiFi)";

????if?([machineString?isEqualToString:@"iPad7,2"])?????return?@"iPad?Pro?12.9?inch?2nd?gen?(Cellular)";

????if?([machineString?isEqualToString:@"iPad7,3"])?????return?@"iPad?Pro?10.5?inch?(WiFi)";

????if?([machineString?isEqualToString:@"iPad7,4"])?????return?@"iPad?Pro?10.5?inch?(Cellular)";


???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;

}

mac 地址

-?(NSString?*)getMacAddress?{

????intmib[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");

????????returnNULL;

????}


????if(sysctl(mib,?6,?NULL,?&len,?NULL,?0)?<?0)?{

????????printf("Error:?sysctl,?take?1/n");

????????returnNULL;

????}


????if((buf?=?malloc(len))?==?NULL)?{

????????printf("Could?not?allocate?memory.?error!/n");

????????returnNULL;

????}


????if(sysctl(mib,?6,?buf,?&len,?NULL,?0)?<?0)?{

????????printf("Error:?sysctl,?take?2");

????????returnNULL;

????}


????ifm?=?(struct?if_msghdr?*)buf;

????sdl?=?(struct?sockaddr_dl?*)(ifm?+?1);

????ptr?=?(unsigned?char?*)LLADDR(sdl);


????NSString?*outstring?=?[NSString?stringWithFormat:@"xxxxxx",?*ptr,?*(ptr+1),?*(ptr+2),?*(ptr+3),?*(ptr+4),?*(ptr+5)];

????free(buf);


????return[outstring?uppercaseString];

}

IP地址

-?(NSString?*)getDeviceIPAddresses?{


????intsockfd?=?socket(AF_INET,?SOCK_DGRAM,?0);


????NSMutableArray?*ips?=?[NSMutableArray?array];


????intBUFFERSIZE?=?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;

????????????intlen?=?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(inti=0;?i?<?ips.count;?i++)?{

????????if(ips.count?>?0)?{

????????????deviceIP?=?[NSString?stringWithFormat:@"%@",ips.lastObject];

????????}

????}

????returndeviceIP;

}

CPU

//?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?incpus)?{

????????cpu?+=?n.floatValue;

????}

????returncpu;

}

//?獲取每個(gè)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);

????????}

????????returncpus;

????}?else{

????????returnnil;

????}

}

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;

????returnspace;

}

//?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;

????returnspace;

}

//?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;

????returnusedDisk;

}

Memory內(nèi)存相關(guān)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;

????returntotalMemory;

}


//?活躍的內(nèi)存,正在使用或者很短時(shí)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;

????5

????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;

????returnvm_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;

????returnvm_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;

????returnvm_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;

????returnpage_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(jié)構(gòu)的內(nèi)存,framework、用戶級(jí)別的應(yīng)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;

????returnvm_stat.wire_count?*?page_size;

}


//?可釋放的內(nèi)存空間：內(nèi)存吃緊自動(dòng)釋放，針對(duì)大對(duì)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;

????returnvm_stat.purgeable_count?*?page_size;

}

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