Re: [boost] [asio] Question regarding io_service.post() and pool of threads

Subject: Re: [boost] [asio] Question regarding io_service.post() and pool of threads
From: Rutger ter Borg (rutger_at_[hidden])
Date: 2010-09-28 05:15:06

On 2010-09-28 10:24, Romain CHANU wrote:
> Hi Vivek,
>
> I did a simple program that creates a pool of threads running
> io_service.run() and calling a function many times (through
> io_service.post() ) (like the simple program in the website given earlier).
>
> My function accesses / modifies an object (without lock) and the program
> just crashes.
>
> I am not really sure of the behavior of functions posted to io_service (i.e
> io_service.post() ) with multiple threads running io_service.run().
>
> Anyone?
>

if the io_service is running in a threadpool, handlers that are posted 
may execute at any time from any thread. If you would like to run 
handlers which access shared resources that need protection, you could 
consider looking into Asio's strand facility.

Rutger