Method flush

crates/stdlib/src/mmap.rs:1007–1033

(&self, options: FlushOptions, vm: &VirtualMachine)

        #[pymethod]
        fn flush(&self, options: FlushOptions, vm: &VirtualMachine) -> PyResult<()> {
            let (offset, size) = options
                .values(self.__len__())
                .ok_or_else(|| vm.new_value_error("flush values out of range"))?;

            if self.access == AccessMode::Read || self.access == AccessMode::Copy {
                return Ok(());
            }

            match self.check_valid(vm)?.deref().as_ref().unwrap() {
                MmapObj::Read(_mmap) => {}
                MmapObj::Write(mmap) => {
                    mmap.flush_range(offset, size)
                        .map_err(|e| e.to_pyexception(vm))?;
                }
                #[cfg(windows)]
                MmapObj::Named(named) => {
                    let ptr = unsafe { named.view_ptr.add(offset) };
                    let result = unsafe { FlushViewOfFile(ptr as *const _, size) };
                    if result == 0 {
                        return Err(io::Error::last_os_error().to_pyexception(vm));
                    }
                }
            }

            Ok(())
        }

        #[cfg(all(unix, not(target_os = "redox")))]
        #[pymethod]