Questions tagged [allocate]
The allocate tag has no usage guidance.
6 questions
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In solana anchor, how to use max_len macro to define multi-dimensional vector?
I'm using anchor to build solana program.
In account struct, I have multi-dimensional vector.
#[max_len(2,50)]
element: Vec<Vec<MyType>>,
In this case, what is the meaning of (2, 50)?
I ...
- 190
3
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1
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197
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Handling out of memory issues in heap
We have a CPI that uses ~4000 bytes of heap, and it executes a few times in a loop, so for a few executes the program will fail with memory allocation failed, out of memory.
The solution has been to ...
- 3,597
1
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1
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How to calculate space for an account dynamically using remaining_accounts
Is it possible to allocate space to an account based on account provided in remaining_accounts? I want to allocate enough space to store public key of the accounts provided in remaining_accounts in a ...
- 113
3
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1
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560
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What is the memory usage limit on solana's programs?
What is the maximum memory that a solana program can allocate before throwing an out of memory exception, and how is it handled during the program's execution? Is this documented anywhere, like the ...
- 51
1
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Is it possible to write a custom allocator at all? where do I store internal data structure?
Static writable data is not supported.
I could store it in the heap itself, only if there is some way to store a flag indicating if initialization is called.
Has this ever been done before?
This is ...
- 61
1
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1
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109
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Allocate data on memory region
I have initilized a PDA with 10000 bytes of space and a Vector on its stored data:
#[derive(Accounts, Clone)]
pub struct CreateVectorPda<'info> {
/// CHECK: Just testing
#[account(mut)]
...
- 375