Function create_arena

nodedb-mem/src/arena.rs:135–141

()

/// Create a new jemalloc arena. Returns the new arena's index.
#[cfg(not(target_arch = "wasm32"))]
fn create_arena() -> Result<u32> {
    // SAFETY: `arenas.create` is a standard jemalloc mallctl that creates a new
    // arena and returns its unsigned index. No pointers are involved.
    let arena_idx: u32 = unsafe { tikv_jemalloc_ctl::raw::read(b"arenas.create\0") }
        .map_err(|e| MemError::Jemalloc(format!("failed to create arena: {e:?}")))?;
    Ok(arena_idx)
}

/// Pin the calling thread to a specific arena.
#[cfg(not(target_arch = "wasm32"))]