Re: [Boost-users] ASIO async IO, will the buffer corrupt?

Subject: Re: [Boost-users] ASIO async IO, will the buffer corrupt?
From: Lloyd (lloyd_at_[hidden])
Date: 2010-05-25 04:45:56

Thank you Rutger for suggesting the idea...

----- Original Message ----- 
From: "Rutger ter Borg" <rutger_at_[hidden]>
To: <boost-users_at_[hidden]>
Sent: Friday, May 21, 2010 3:25 PM
Subject: Re: [Boost-users] ASIO async IO, will the buffer corrupt?

> Lloyd wrote:
>
>> Hello,
>>   we are trying to write a high performane storage server. For that we 
>> are
>>   using Aynchronous IO with boost::asio. The data will be received at the
>>   storage server with the help of boost::asio::async_read(), and the data
>>   will be written to the storage with boost::asio::async_write() in the
>>   asyn_read() completion handler. Here we are planning to share the data
>>   buffer. The async read will be running in a loop, so if the write is 
>> not
>>   completed and if the next async_read() attempts to access the buffer,
>>   will the buffer be corrupted?
>
> Yes.
>
>>
>> If we use seperate buffer for each async_read()+async_write() operation,
>> wouldn't it be inefficient?
>>
>
> It's as efficient, it only takes more memory. What happens if the reads go
> faster than the writes? It sounds like you use a typical producer/consumer
> pattern and could use off-the-shelf solutions for that, like, e.g., a
> circular buffer.
>
> Cheers,
>
> Rutger
>
>
>
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