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
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