為了統(tǒng)計(jì)用戶信息、下發(fā)廣告，服務(wù)器端往往需要手機(jī)用戶設(shè)備及app的各種信息，下面講述一下各種信息的獲取方式：
一行代碼就搞定的統(tǒng)一來！
?//?這個(gè)方法后面會(huì)列出來
????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);
????//?這個(gè)方法后面會(huì)單獨(dú)列出
????NSString?*macAddress?=?[self?getMacAddress];
????NSLog(@"macAddress-->%@",?macAddress);
????//?這個(gè)方法后面會(huì)單獨(dú)列出
????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(cè)推廣效果，是戳戳有余了
???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)?。∽钊?！親測(cè)！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(guó)行、日版、港行iPhone?7";
????if([deviceString?isEqualToString:@"iPhone9,2"])????return@"港行、國(guó)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(guó)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(guó)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(guó)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";
????returndeviceString;
}
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;????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(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;
????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.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;
????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.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;
????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;
????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;
????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.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;
????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.purgeable_count?*?page_size;
}
