Struct solana_bpf_loader_program::syscalls::SyscallAllocFree

pub struct SyscallAllocFree<'a, 'b> { /* private fields */ }

Dynamic memory allocation syscall called when the BPF program calls sol_alloc_free_(). The allocator is expected to allocate/free from/to a given chunk of memory and enforce size restrictions. The memory chunk is given to the allocator during allocator creation and information about that memory (start address and size) is passed to the VM to use for enforcement.

Implementations

impl<'a, 'b> SyscallAllocFree<'a, 'b>

pub fn init(
    invoke_context: Rc<RefCell<&'a mut InvokeContext<'b>>>
) -> Box<dyn SyscallObject<BpfError> + 'a>

Trait Implementations

impl<'a, 'b> SyscallObject<BpfError> for SyscallAllocFree<'a, 'b>

fn call(
    &mut self,
    size: u64,
    free_addr: u64,
    _arg3: u64,
    _arg4: u64,
    _arg5: u64,
    _memory_mapping: &mut MemoryMapping<'_>,
    result: &mut Result<u64, EbpfError<BpfError>>
)

Call the syscall function