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List:       opensolaris-mdb-discuss
Subject:    Re: [mdb-discuss] Is there a regression introduced for mdb
From:       Brian Xu - Sun Microsystems - Beijing China <Brian.Xu () Sun ! COM>
Date:       2010-01-21 10:35:03
Message-ID: 4B582DD7.2010608 () sun ! com
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To memorize, I list the mdb pipe I used here, which includes ¨::list¨ 
and ¨::walk list¨ :-)

 > *mptsas_state::softstate 0|::print mptsas_t m_active|::print -a 
mptsas_slots_t  m_tgttbl|::array mptsas_hash_node_t* 0t16 |/Kn|::list 
mptsas_hash_node_t next|::print mptsas_hash_node_t data|::print 
mptsas_target_t m_tgt_dma_cookie_cache_list|::walk list|::print 
mptsas_target_dma_cookie_cache_t timestamp
timestamp = 0x1008d4
timestamp = 0x1008d5
timestamp = 0x1008d5
timestamp = 0x1008d6
timestamp = 0x1008d6
timestamp = 0x1008d7
timestamp = 0x1008d7
...

I like mdb...

-Brian

On 01/21/10 14:59, Brian Xu - Sun Microsystems - Beijing China wrote:
> On 01/21/10 14:41, Peter Memishian wrote:
>> Hey Brian,
>>
>>  > Here is my C code:
>>  > typedef struct mptsas_target_dma_cookie_cache {
>>  >    ddi_dma_handle_t    dmahandle;
>>  >    ddi_dma_cookie_t    cookie;
>>  >    pfn_t            pagenum;
>>  >    clock_t            timestamp;
>>  >    list_node_t        node;
>>  > } mptsas_target_dma_cookie_cache_t;
>>
>> As an aside: please prefix these field names so that cscope will be able
>> to find uses easily.
>>
>>   
> Understood.
>>  > typedef    struct mptsas_target {
>>  > ...
>>  >    list_t            m_tgt_dma_cookie_cache_list;
>>  >        int            m_tgt_dma_cookie_cache_n;
>>  >  > } mptsas_target_t;
>>  >  > In mdb,
>>  >  > 0x6003ea22bc8::print mptsas_hash_node_t data|::print -a 
>> mptsas_target_t
>>  > 6003ecce188 {
>>  > ...
>>  > 6003ecce1c8 m_tgt_dma_cookie_cache_list = {
>>  >        6003ecce1c8 list_size = 0x40
>>  >        6003ecce1d0 list_offset = 0x30
>>  >        6003ecce1d8 list_head = {
>>  >            6003ecce1d8 list_next = 0x6003d9f3eb0
>>  >            6003ecce1e0 list_prev = 0x6003ee03670
>>  >        }
>>  >    }
>>  >    6003ecce1e8 m_tgt_dma_cookie_cache_n = 0xd
>>  > }
>>
>> Try 6003ecce1c8::walk list
>>
>>   
> Yes, that's it. I must have ever used this command :-( .
>> The '::list' dcmd is for walking singly-linked (and possibly circular)
>> lists of objects that refer to one another through traditional pointers.
>> In contrast, '::walk list' is for walking a list_t.
>>   
> Thanks for the clarifying. I think I will not forget it anymore.
>
> Thanks,
> Brian
>> Hope things are well,
>> -- 
>> meem
>>   
>
> _______________________________________________
> mdb-discuss mailing list
> mdb-discuss@opensolaris.org

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