raphtory 0.17.0

raphtory, a temporal graph library
Documentation 
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use crate::core::state::{compute_state::ComputeState, shuffle_state::ShuffleComputeState};
use std::{borrow::Cow, sync::Arc};

// this only contains the global state and it is synchronized after each task run
#[derive(Clone, Debug)]
pub struct Global<CS: ComputeState>(Arc<ShuffleComputeState<CS>>);

// this contains the node specific shard state and it is synchronized after each task run
#[derive(Clone, Debug)]
pub struct Shard<CS: ComputeState>(Arc<ShuffleComputeState<CS>>);

#[derive(Debug, Copy, Clone)]
pub(crate) struct PrevLocalState<'a, S> {
    pub(crate) state: &'a Vec<S>,
}

impl<'a, S: 'static> PrevLocalState<'a, S> {
    pub(crate) fn new(prev_local_state: &'a Vec<S>) -> Self {
        Self {
            state: prev_local_state,
        }
    }
}

impl<CS: ComputeState> Shard<CS> {
    pub(crate) fn new(total_len: usize, num_morcels: usize, morcel_size: usize) -> Self {
        Self(Arc::new(ShuffleComputeState::new(
            total_len,
            num_morcels,
            morcel_size,
        )))
    }

    pub(crate) fn as_cow(&self) -> Cow<'_, ShuffleComputeState<CS>> {
        Cow::Borrowed(&*self.0)
    }

    pub(crate) fn from_state(state: ShuffleComputeState<CS>) -> Shard<CS> {
        Self(Arc::new(state))
    }

    pub fn unwrap(self) -> Arc<ShuffleComputeState<CS>> {
        self.0
    }

    pub fn inner(&self) -> &ShuffleComputeState<CS> {
        &self.0
    }

    pub fn consume(self) -> Result<ShuffleComputeState<CS>, Arc<ShuffleComputeState<CS>>> {
        Arc::try_unwrap(self.0)
    }

    pub fn reset(&mut self, ss: usize, resetable_states: &[u32]) {
        if let Some(s) = Arc::get_mut(&mut self.0) {
            s.copy_over_next_ss(ss);
            s.reset_states(ss, resetable_states);
        }
    }
}

impl<CS: ComputeState> From<Arc<ShuffleComputeState<CS>>> for Shard<CS> {
    fn from(state: Arc<ShuffleComputeState<CS>>) -> Self {
        Self(state)
    }
}

impl<CS: ComputeState> Global<CS> {
    pub(crate) fn new() -> Self {
        Self(Arc::new(ShuffleComputeState::global()))
    }

    pub(crate) fn as_cow(&self) -> Cow<'_, ShuffleComputeState<CS>> {
        Cow::Borrowed(&*self.0)
    }

    pub(crate) fn from_state(global_state: ShuffleComputeState<CS>) -> Global<CS> {
        Self(Arc::new(global_state))
    }

    pub fn unwrap(self) -> Arc<ShuffleComputeState<CS>> {
        self.0
    }

    pub fn inner(&self) -> &ShuffleComputeState<CS> {
        &self.0
    }

    pub fn reset(&mut self, ss: usize, resetable_states: &[u32]) {
        if let Some(s) = Arc::get_mut(&mut self.0) {
            s.copy_over_next_ss(ss);
            s.reset_states(ss, resetable_states);
        }
    }
}

impl<CS: ComputeState> From<Arc<ShuffleComputeState<CS>>> for Global<CS> {
    fn from(state: Arc<ShuffleComputeState<CS>>) -> Self {
        Self(state)
    }
}