C++获取多路CPU信息

[LL596214569]

C++如何获取当前电脑的CPU信息？包括CPU个数、线程数、内核数等等；
我试过
SYSTEM_INFO SysInfo;
GetSystemInfo(&SysInfo);
没法获取多路CPU下的正确信息，只能取到一个CPU的，还有下面这份代码，也没法获取多路CPU的信息，

那么该如何取得多路CPU信息呢？不同平台下都该用什么接口？

[tiger波波]

引用 4 楼 LL596214569 的回复:

[quote=引用 2 楼 tiger波波 的回复:] CPU一般只有一个吧，多核多线程

你发的链接里的代码和我图上的是一样的，这个在单CPU下好用，多CPU不好用； 多路CPU是指一个主板上插了多个CPU，不是多核；[/quote] https://blog.csdn.net/blaider/article/details/8456367

[tiger波波]

https://blog.csdn.net/farmwang/article/details/80658662 https://www.0xaa55.com/thread-1355-1-1.html

[tiger波波]

亲测可用 https://blog.csdn.net/chenlycly/article/details/84991596

[tiger波波]

CPU一般只有一个吧，多核多线程

[zgl7903]

WMI Win32_Processor

[LL596214569]

引用 2 楼 tiger波波 的回复:

CPU一般只有一个吧，多核多线程

你发的链接里的代码和我图上的是一样的，这个在单CPU下好用，多CPU不好用； 多路CPU是指一个主板上插了多个CPU，不是多核；

[LL596214569]

引用 12 楼 zgl7903 的回复:

MSDN说明例子中有一段 参考下， 留意NumberOfProcessors， 还有后面的是循环枚举，那它的循环次数可能就是处理器数量 Wscript.Echo "Processors" Set colCompSys = objWMIService.ExecQuery("Select * from Win32_ComputerSystem") For Each objCS in colCompSys WScript.Echo " NumberOfProcessors: " & objCS.NumberOfProcessors WScript.Echo " NumberOfLogicalProcessors: " & objCS.NumberOfLogicalProcessors WScript.Echo " PCSystemType: " & objCS.PCSystemType Next Set colProcessors = objWMIService.ExecQuery("Select * from Win32_Processor") For Each objProcessor in colProcessors WScript.Echo " Manufacturer: " & objProcessor.Manufacturer WScript.Echo " Name: " & objProcessor.Name WScript.Echo " Description: " & objProcessor.Description WScript.Echo " ProcessorID: " & objProcessor.ProcessorID WScript.Echo " Architecture: " & objProcessor.Architecture WScript.Echo " AddressWidth: " & objProcessor.AddressWidth WScript.Echo " NumberOfCores: " & objProcessor.NumberOfCores WScript.Echo " DataWidth: " & objProcessor.DataWidth WScript.Echo " Family: " & objProcessor.Family WScript.Echo " MaximumClockSpeed: " & objProcessor.MaxClockSpeed Next

这个例子是VB写的，大概意思我能动，但是这个转换成C++。。。。enmmmm 感觉是需要这个 objWMIService = GetObject("winmgmts:" _ & "{impersonationLevel=impersonate}!\\" & strComputer & "\root\cimv2") 大佬你能翻译一下吗。。。。

[LL596214569]

引用 6 楼 tiger波波 的回复:

https://blog.csdn.net/farmwang/article/details/80658662 https://www.0xaa55.com/thread-1355-1-1.html

[NtQuerySystemInformation may be altered or unavailable in future versions of Windows. 并且 The NumberOfProcessors member contains the number of processors present in the system. Use GetSystemInfo instead to retrieve this information. 微软建议用 GetSystemInfo 来替代它获取 NumberOfProcessors ，而 GetSystemInfo 实测无法读取多路CPU的信息。

[LL596214569]

引用 6 楼 tiger波波 的回复:

https://blog.csdn.net/farmwang/article/details/80658662 https://www.0xaa55.com/thread-1355-1-1.html

https://docs.microsoft.com/en-us/windows/win32/api/winternl/nf-winternl-ntquerysysteminformation

[LL596214569]

引用 3 楼 zgl7903 的回复:

WMI Win32_Processor

NumberOfCores Data type: uint32 Access type: Read-only Qualifiers: MappingStrings ("WMI") Number of cores for the current instance of the processor. A core is a physical processor on the integrated circuit. For example, in a dual-core processor this property has a value of 2. For more information, see Remarks. 这个的意思是读取当前处理器的信息吧，应该不是多个处理器的信息吧

[zgl7903]

NumberOfLogicalProcessors ?

[LL596214569]

引用 10 楼 zgl7903 的回复:

NumberOfLogicalProcessors ?

Number of logical processors for the current instance of the processor 这个意思不是读的单个CPU吗。。。。

[zgl7903]

MSDN说明例子中有一段 参考下， 留意NumberOfProcessors， 还有后面的是循环枚举，那它的循环次数可能就是处理器数量 Wscript.Echo "Processors" Set colCompSys = objWMIService.ExecQuery("Select * from Win32_ComputerSystem") For Each objCS in colCompSys WScript.Echo " NumberOfProcessors: " & objCS.NumberOfProcessors WScript.Echo " NumberOfLogicalProcessors: " & objCS.NumberOfLogicalProcessors WScript.Echo " PCSystemType: " & objCS.PCSystemType Next Set colProcessors = objWMIService.ExecQuery("Select * from Win32_Processor") For Each objProcessor in colProcessors WScript.Echo " Manufacturer: " & objProcessor.Manufacturer WScript.Echo " Name: " & objProcessor.Name WScript.Echo " Description: " & objProcessor.Description WScript.Echo " ProcessorID: " & objProcessor.ProcessorID WScript.Echo " Architecture: " & objProcessor.Architecture WScript.Echo " AddressWidth: " & objProcessor.AddressWidth WScript.Echo " NumberOfCores: " & objProcessor.NumberOfCores WScript.Echo " DataWidth: " & objProcessor.DataWidth WScript.Echo " Family: " & objProcessor.Family WScript.Echo " MaximumClockSpeed: " & objProcessor.MaxClockSpeed Next