[boost] Re: Boost Thread - Read Write Mutex Problem

From: Michael Glassford (glassfordm_at_[hidden])
Date: 2004-12-02 13:13:54

Just wanted to let you know: unfortunately, I won't be able to look at 
this until at least this weekend. If anyone else wants to volunteer, 
help would be welcome.

Mike

"David Brownell" <david_brownell_at_[hidden]> wrote in message 
news:BAY101-DAV107F654EE1B22D622CD3CEEDBF0_at_phx.gbl...
> When running the simple program listed below, the scoped_read_lock 
> appears
> to never acquire a read lock on the mutex and, as a result, the 
> program
> never finishes.  In looking through the documentation, I don't think 
> there
> is anything additional I need to do and was a bit surprised that 
> this didn't
> work.
>
> Here is the code:
>
> boost::read_write_mutex
> m(static_cast<boost::read_write_scheduling_policy::read_write_scheduling_pol
> icy_enum>(alternating_many_reads));
>
>    std::cout << "Before\n";
>    {
>        boost::read_write_mutex::scoped_write_lock  l(m);
>    }
>    std::cout << "Middle\n";
>    {
>        boost::read_write_mutex::scoped_read_lock   l(m);
>    }
>    std::cout << "After\n";
>
>
> And some more details:
> - Windows XP SP2
> - Microsoft Visual Studio 2003
> - I am compiling with the Multithreaded DLL version of the CRT, so
> boost_thread-vc71-mt-gd-1_32.lib is being used
> - test_read_write_mutex.cpp completed without problems
> - writer_priority and reader_priority completed without problems. 
> Only
> alternating_many_reads and alternating_single_read seem to have 
> problems.
>
> Thanks for your help!
> David Brownell
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