Struct smithay_client_toolkit::shm::DoubleMemPool

pub struct DoubleMemPool {
    pool1: MemPool,
    pool2: MemPool,
    free: Rc<RefCell<bool>>,
}

A Double memory pool, for convenient double-buffering

This type wraps two internal memory pool, and can be use for conveniently implementing double-buffering in your apps.

DoubleMemPool requires a implementation that is called when one of the two internal memory pools becomes free after None was returned from the pool() method.

Fields

pool1: MemPool

pool2: MemPool

free: Rc<RefCell<bool>>

Implementations

impl DoubleMemPool

pub fn new<F>(shm: Attached<WlShm>, callback: F) -> Result<DoubleMemPool>where F: FnMut(DispatchData<'_>) + 'static,

Create a double memory pool

pub fn pool(&mut self) -> Option<&mut MemPool>

This method checks both its internal memory pools and returns one if that pool does not contain any buffers that are still in use by the server. If both the memory pools contain buffers that are currently in use by the server None will be returned.

Trait Implementations

impl Debug for DoubleMemPool

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.