Alexandre Chartre wrote:
>
> You can do:
>
> *swap_vnodes::array "struct vnode *" 0t2048 | /Kn | ::grep .
>
> alex.
Hi alex,
Thanks, it works.
Whille I still would like to know whether this is a way to specify
"not equal" in mdb, so I can exclude the variables with some specific
value, something like ::grep .!= 0x1234
Regards,
Zhijun
>
> zhijun wrote:
>> Hi folks,
>> I met a problem when investigating the swap code. There is an array
>> called swap_vnodes[],which contains pointers to all the swap vnodes in
>> system.
>>
>> static struct vnode **swap_vnodes;
>> #define MAX_SWAP_VNODES 2048
>>
>> While this is a pointer to pointer,I would like to dump the array and
>> see which slots are already allocated.
>>
>> mdb -k
>>> swap_vnodes/K
>> swap_vnodes:
>> swap_vnodes: fffffffecc47e000
>>> fffffffecc47e000::array "struct vnode *" 0t2048 p|::eval <p/K
>> 0xfffffffecc47e000: 0
>> 0xfffffffecc47e008: 0
>> 0xfffffffecc47e010: 0
>> 0xfffffffecc47e018: 0
>> 0xfffffffecc47e020: 0
>> 0xfffffffecc47e028: 0
>> 0xfffffffecc47e030: 0
>> 0xfffffffecc47e038: 0
>> 0xfffffffecc47e040: 0
>> 0xfffffffecc47e048: 0
>> 0xfffffffecc47e050: 0
>> 0xfffffffecc47e058: 0
>> 0xfffffffecc47e060: 0
>> 0xfffffffecc47e068: 0
>> 0xfffffffecc47e070: 0
>> ......
>>
>>> fffffffecc47e000::array "struct vnode *" 0t2048 p|::eval <p/K|::grep
>>> .!=0
>> sh: =0: not found
>> mdb: syntax error on line 1 of (pipeline) near ":"
>>> fffffffecc47e000::array "struct vnode *" 0t2048 p|::eval <p/K|::grep
>>> .==0
>> mdb: syntax error on line 1 of (pipeline) near ":"
>>
>>> 0xfffffffecc47e000/K|::grep .!=0
>> sh: =0: not found
>>> 0xfffffffecc47e000/K|::grep .==0
>> 0
>>
>> My two questions:
>> 1) It seems that != is not supported in mdb, so how can I specify "not
>> equal" in mdb?
>> 2) While == works, it doesn't work for the above case, I guess it is
>> related to "/K", is there any way to work around it or do we need to
>> fix it?
>>
>> Thanks,
>> Zhijun
>> _______________________________________________
>> mdb-discuss mailing list
>> mdb-discuss at opensolaris.org
