Class Pool<T>

Example

interface Allocator {
  live: Set<number>;
  handles: hegel.stateful.Pool<number>;
}

const allocator: hegel.stateful.StateMachine<Allocator> = {
  rules: {
    alloc: (_tc, state) => {
      const handle = allocate();
      state.live.add(handle);
      state.handles.add(handle);
    },
    free: (tc, state) => {
      // Draws a handle that a previous `alloc` step put in the pool.
      const handle = tc.draw(state.handles.valuesConsumed());
      release(handle);
      state.live.delete(handle);
    },
  },
};

hegel.test((tc) => {
  const state = { live: new Set<number>(), handles: new hegel.stateful.Pool<number>(tc) };
  hegel.stateful.run(tc, allocator, state);
});
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