如何在运行时获取iOS设备CPU架构

本文介绍了如何在运行时获取iOS设备CPU架构的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

有没有一种方法可以在运行时识别iOS设备CPU架构?

Is there a way to identify the iOS device CPU architecture in runtime?

谢谢.

推荐答案

您可以使用sysctlbyname:

You can use sysctlbyname :

#include <sys/types.h>
#include <sys/sysctl.h>
#include <mach/machine.h>

NSString *getCPUType(void)
{
    NSMutableString *cpu = [[NSMutableString alloc] init];
    size_t size;
    cpu_type_t type;
    cpu_subtype_t subtype;
    size = sizeof(type);
    sysctlbyname("hw.cputype", &type, &size, NULL, 0);

    size = sizeof(subtype);
    sysctlbyname("hw.cpusubtype", &subtype, &size, NULL, 0);

    // values for cputype and cpusubtype defined in mach/machine.h
    if (type == CPU_TYPE_X86)
    {
            [cpu appendString:@"x86 "];
             // check for subtype ...

    } else if (type == CPU_TYPE_ARM)
    {
            [cpu appendString:@"ARM"];
            switch(subtype)
            {
                    case CPU_SUBTYPE_ARM_V7:
                    [cpu appendString:@"V7"];
                    break;
                    // ...
            }
    }
    return [cpu autorelease];
}