Re: [Boost-users] Problem with boost::asio and boost::coroutine.

Subject: Re: [Boost-users] Problem with boost::asio and boost::coroutine.
From: Иван Бобев (bobeff_at_[hidden])
Date: 2015-07-27 06:58:38

I forgot to mention that used by me boost version is *1.57 *and the used
compiler is *GCC 4.8.3 *on *CentOS Linux release 7.1.1503*. Thank you in
advance.

2015-07-27 13:46 GMT+03:00 Иван Бобев <bobeff_at_[hidden]>:

> This is my first post so sorry if it is not in the appropriate form.
>
> I have trouble with specific *boost::asio* and *boost::coroutine *usage
> pattern.  I have a multi-thread application which uses *boost::asio* and
> *boost::coroutine* via its integration in *boost::asio*. Every thread has
> its own *io_service* object. The only shared state between threads are
> connection pools which are locked with *mutex* when connection is get or
> returned from/to the connection pool. When there is not enough connections
> in the pool I push infinite *asio::steady_tiemer *in internal structure
> of the pool and asynchronously waiting on it and I yielding from the
> couroutine function. When other thread returns connection to the pool it
> checks whether there is waiting timers, it gets waiting timer from the
> internal structure, it gets its *io_service* object and posts a lambda
> which wakes up the timer to resume the suspended coroutine. I have random
> crashes in the application. I try to investigate the problem with
> *valgrind*. It founds some issues but I cannot understand them because
> they happen in *boost::coroutine* and *boost::asio *internals. I posted
> two questions in *stckoverflow *with extract from my code and from
> valgrind and *GDB* output. The first link is with original question with
> extracts from my source and the second one contains proof of concept
> application aimed to investigate the problem in isolation. Can someone help
> me explaining what is my mistake which causes those problems?
>
>
> http://stackoverflow.com/questions/31610415/what-causes-a-random-crash-in-boostcoroutine
>
> http://stackoverflow.com/questions/31639888/whats-wrong-with-this-boostasio-and-boostcoroutine-usage-pattern
>