public async Task <GeneticEvolutionStates> EvolveUntil(
IPopulation population,
Func <GeneticEvolutionStates, bool> termination,
CancellationToken token = default)
{
var statesHolder = new StatesHolder();
await Evolve(population, termination, token, statesHolder);
return(statesHolder.States);
}
public async Task <(GeneticEvolutionStates, bool)> TryEvolveUntil(
IPopulation population,
Func <GeneticEvolutionStates, bool> termination,
CancellationToken token)
{
var statesHolder = new StatesHolder();
try
{
await Evolve(population, termination, token, statesHolder);
}
catch (OperationCanceledException)
{
return(statesHolder.States, false);
}
return(statesHolder.States, true);
}
private async Task Evolve(
IPopulation population,
Func <GeneticEvolutionStates, bool> termination,
CancellationToken token,
StatesHolder statesHolder)
{
try
{
while (!termination.Invoke(statesHolder.States))
{
var startTime = DateTime.Now;
var offspring = await _strategy.Operate(population.Chromosomes, population.Capacity, token);
statesHolder.EvolutionTime += DateTime.Now - startTime;
population.Chromosomes = offspring;
statesHolder.EvolutionCount++;
}
}
finally
{
_statesHolder.Extend(statesHolder.States);
}
}
