Struct solana_bpf_loader_program::syscalls::SyscallAllocFree

pub struct SyscallAllocFree {}

Dynamic memory allocation syscall called when the SBF 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 SyscallAllocFree

pub fn rust( invoke_context: &mut InvokeContext<'_>, size: u64, free_addr: u64, _arg3: u64, _arg4: u64, _arg5: u64, _memory_mapping: &mut MemoryMapping<'_> ) -> Result<u64, Box<dyn Error>>

Rust interface

pub fn vm( invoke_context: *mut EbpfVm<'_, InvokeContext<'_>>, size: u64, free_addr: u64, _arg3: u64, _arg4: u64, _arg5: u64 )

VM interface