Re: [boost] ARM help needed

From: Rene Rivera (grafikrobot_at_[hidden])
Date: 2008-04-09 18:27:11

Peter Dimov wrote:
> Rene Rivera:
> 
>> Peter Dimov wrote:
>>> Can someone with access to ARM please run
>>> libs/smart_ptr/test/spinlock_test.cpp and/or take a look at
>>> boost/detail/spinlock_gcc_arm.hpp? I've verified that it compiles, but 
>>> can't
>>> run it.
>> What is the expected behavior? I get no output, no CPU usage, and an
>> indefinite running time.
> 
> This means a deadlock. The test just locks and unlocks two spinlocks, the 
> expected behavior is to return immediately. You can try 
> spinlock_try_test.cpp which might produce some output.

OK, I made it output which code it's going to execute. And it only gets 
as far as the first call:

====
coda$ ./spinlock_test
// sp.lock();
// boost::detail::yield( 0 );
// boost::detail::yield( 1 );
// boost::detail::yield( 2 );
// boost::detail::yield( 3 );
// boost::detail::yield( 4 );
[and so on...]
====

> Here's the relevant portion of spinlock_gcc_arm.hpp:
> 
>     bool try_lock()
[...]

That would help if I knew ARM assembly ;-)

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