Method set_readonly

cranelift/jit/src/memory/system.rs:114–129

Set all memory allocated in this `Memory` up to now as readonly.

(&mut self)

    /// Set all memory allocated in this `Memory` up to now as readonly.
    pub(crate) fn set_readonly(&mut self) -> ModuleResult<()> {
        self.finish_current();

        for &PtrLen { ptr, len, .. } in self.non_protected_allocations_iter() {
            unsafe {
                region::protect(ptr, len, region::Protection::READ).map_err(|e| {
                    ModuleError::Backend(
                        anyhow::Error::new(e).context("unable to make memory readonly"),
                    )
                })?;
            }
        }

        self.already_protected = self.allocations.len();
        Ok(())
    }

    /// Iterates non protected memory allocations that are of not zero bytes in size.
    fn non_protected_allocations_iter(&self) -> impl Iterator<Item = &PtrLen> {