Struct ArenaMemoryProvider 

pub struct ArenaMemoryProvider { /* private fields */ }

ArenaMemoryProvider allocates segments from a contiguous memory region that is reserved up-front.

The arena’s memory is initially allocated with PROT_NONE and gradually updated as the JIT requires more space. This approach allows for stable addresses throughout the lifetime of the JIT.

Depending on the underlying platform, requesting large parts of the address space to be allocated might fail. This implementation currently doesn’t do overcommit on Windows.

Note: Memory will be leaked by default unless JITMemoryProvider::free_memory is called to ensure function pointers remain valid for the remainder of the program’s life.

Implementations

impl ArenaMemoryProvider

pub fn new_with_size(reserve_size: usize) -> Result<Self, Error>

Create a new memory region with the given size.

Trait Implementations

impl Drop for ArenaMemoryProvider

fn drop(&mut self)

Executes the destructor for this type.

impl JITMemoryProvider for ArenaMemoryProvider

fn allocate_readexec(&mut self, size: usize, align: u64) -> Result<*mut u8>

Allocate memory that will be executable once finalized.

fn allocate_readwrite(&mut self, size: usize, align: u64) -> Result<*mut u8>

Allocate writable memory.

fn allocate_readonly(&mut self, size: usize, align: u64) -> Result<*mut u8>

Allocate memory that will be read-only once finalized.

unsafe fn free_memory(&mut self)

Free the memory region.

fn finalize(&mut self, branch_protection: BranchProtection) -> ModuleResult<()>

Finalize the memory region and apply memory protections.

impl Send for ArenaMemoryProvider