Genode 16.05 Fault handler

[Denis Huber]

Hello Sebastian,

I moved sigh to the member attributes [1], but without success. I also 
tried to use a heap to store the Signal_handler, also without success.

[1] 
https://github.com/702nADOS/genode-CheckpointRestore-SharedMemory/blob/93eaec436ce9b6d3b3a6663558bff9af925ae70f/src/test/fault_handler/main.cc#L19

I am using run script [2], if it helps.

[2] 
https://github.com/702nADOS/genode-CheckpointRestore-SharedMemory/blob/93eaec436ce9b6d3b3a6663558bff9af925ae70f/run/fault_handler.run


Kind regards,
Denis

On 30.08.2016 14:36, Sebastian Sumpf wrote:
> Hi Denis,
>
>> Signal_handler<Main> sigh = {env.ep(), *this, &Main::_handle_fault};
>
> The line above, creates the Signal_handler on the stack and destructs
> this handler as soon as the 'Main' constructor is finished.
>
> Therefore, 'sigh' should be a member of the 'Main' class.
>
> Regards,
>
> Sebastian
>
> On 08/30/2016 02:10 PM, Denis Huber wrote:
>> Dear Genode community,
>>
>> in Genode 16.05 the old usage of Signal_receivers and Signal_contexts is
>> considered deprecated. Instead Signal_handler and Signal_transmitter
>> shall be used.
>>
>> I am trying to use a Signal_handler as a fault handler for env's address
>> space. I wrote a short test to illustrate the problem [1].
>>
>> [1]
>> https://github.com/702nADOS/genode-CheckpointRestore-SharedMemory/blob/c9a5a1f999a2ce1c6ffd5c316eee127c93d87308/src/test/fault_handler/main.cc
>>
>> The output of [1] is as follows:
>> "
>> [init -> pf-signal_handler] --- pf-signal_handler started ---
>> no RM attachment (WRITE pf_addr=1000 pf_ip=100061c from 2ae000)
>> Genode::Pager_entrypoint::entry()::<lambda(Genode::Pager_object*)>:
>> Could not resolve pf=1000 ip=100061c
>> "
>>
>> The signal handler was registered correctly, because the line
>> "
>> Genode::Core_pd_session_component::submit(Genode::Capability<Genode::Signal_context>,
>> unsigned int)::<lambda(Genode::Signal_context_component*)>: invalid
>> signal-context capability
>> "
>> is missing. However, the method _handle_fault() is never entered. What
>> am I doing wrong?
>>
>>
>> Kind regards,
>> Denis
>>
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>
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