Hi,
Thanks for the help. It turns out that the problem was that the L1Dir
constructor was not being called. I resolved this by calling the constructor
with the `construct_at`function.
Best,
Rumen
________________________________
From: Alexander Boettcher <alexander.boettc...@genode-labs.com>
Sent: Friday, January 24, 2025 9:38 AM
To: users@lists.genode.org <users@lists.genode.org>
Subject: Re: Trying to modify Bit_array throws 'Invalid_index_access'
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Hi,
I took your L1 calculation and tried:
#define BITS_PER_WORD sizeof(addr_t) * 8UL
#define WORD_ALIGN(_BITS) (BITS_PER_WORD) - (_BITS % (BITS_PER_WORD)) + _BITS
static const unsigned int L1_SIZE . = WORD_ALIGN(256);
log(" ", L1_SIZE); -> 320
Bit_array<L1_SIZE> test { };
test.set(0, L1_SIZE);
which works without exception.
The exception is only thrown at one specific place in the bit_array
implementation. Just instrument it and see which of the 3 condition don't match
for you.
Cheers,
Alex.
On 22.01.25 16:20, Rumen Mitov wrote:
> Hello,
>
> I am facing a problem when using the Bit_array class.
>
> I have a class called L1Dir which contains the property freemask which is a
> Bit_array with L1_SIZE bits. I want to initialize every bit to value 1 in
> freemask. However, when I try to call freemask.set(0, L1Dir) outside of the
> L1Dir default constructor the following error is thrown:
> 'Genode::Bit_array_base::Invalid_index_access'.
>
> I have tried changing the call to freemask.set(1,2) but I still get the same
> exception. I have also tried with freemask.get(...) and freemask.clear(...)
> with no success.
>
> I have initialized freemask with enough space:
>
> Genode::Bit_array<L1_SIZE> freemask;
>
> This leads me to believe that the problem has something to do with the
> underlying memory of Bit_array_base. If you know what I am doing wrong,
> please let me know!
>
> Best,
> Rumen
>
>
> P.S. If you need more context, you can find the current state of my code
> here:
> https://github.com/rumenmitov/genode-squid/tree/a726c5da3099a7f5de1d4d3d98a59b3a77812000
>
>
>
>
>
>
>
>
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--
Alexander Boettcher
Genode Labs
https://www.genodians.org - https://www.genode.org
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