Yes, I have realized,libuv runs no problem in this point.
It's sorry for my fault.


On Friday, July 18, 2014 1:39:23 PM UTC+8, Fedor Indutny wrote:
>
> Hello!
>
> This is just copying the *pointers* to the supplied data, not the data 
> itself.
>
> Cheers,
> Fedor.
>
>
> On Fri, Jul 18, 2014 at 5:55 AM, vegertar hu <[email protected] 
> <javascript:>> wrote:
>
>> The libuv is the latest git master version.
>>
>> I have tracked the memory of the buffer and will free on send_cb, but in 
>> the source of uv__udp_send, I found some "copy" fragment:
>>
>>   req->bufs = req->bufsml;                                               
>>           
>>  
>>   if (nbufs > ARRAY_SIZE(req->bufsml))                                  
>>            
>>
>>     req->bufs = malloc(nbufs * sizeof(bufs[0]));                        
>>    
>>                                                                         
>>        
>>
>>   if (req->bufs == NULL)                                                
>>            
>>
>>     return -ENOMEM;                      
>>                                                                         
>>                                                     
>>
>>   memcpy(req->bufs, bufs, nbufs * sizeof(bufs[0]));                     
>>            
>>
>>   handle->send_queue_size += uv__count_bufs(req->bufs, req->nbufs);       
>>          
>>
>>   handle->send_queue_count++;                                             
>>          
>>
>>   QUEUE_INSERT_TAIL(&handle->write_queue, &req->queue);                   
>>          
>>
>>   uv__handle_start(handle);                                          
>>
>> It should be zero-copy, shouldn't it ?
>>
>> I also wonder the same stuff when I calling uv_write.
>>
>> Thanks for your consideration.
>>
>>
>>
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>

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