Method free

datafusion/execution/src/memory_pool/mod.rs:391–397

Frees all bytes from this reservation back to the underlying pool, returning the number of bytes freed.

(&self)

    /// Frees all bytes from this reservation back to the underlying
    /// pool, returning the number of bytes freed.
    pub fn free(&self) -> usize {
        let size = self.size.swap(0, atomic::Ordering::Relaxed);
        if size != 0 {
            self.registration.pool.shrink(self, size);
        }
        size
    }

    /// Frees `capacity` bytes from this reservation
    ///