/// <summary>
/// Creates a new JavaScript engine pool.
/// </summary>
private ZeroJsPool CreatePool()
{
var poolConfig = new ZeroJsPoolConfig
{
EngineFactory = EngineFactory,
StartEngines = _config.StartEngines,
MaxEngines = _config.MaxEngines,
MaxUsagesPerEngine = _config.MaxUsagesPerEngine,
};
var pool = new ZeroJsPool(poolConfig);
return(pool);
}
public ZeroJsPool(ZeroJsPoolConfig config)
{
_config = config;
new Thread(
() =>
{
while (!_disposedFlag.IsSet())
{
if (_engines.Count >= _config.StartEngines)
{
_enginePopulater?.WaitOne(500);
}
//pupulater
while (!_disposedFlag.IsSet() && _engines.Count < _config.StartEngines)
{
CreateEngine();
}
//MaxUsagesPerEngine
if (!_disposedFlag.IsSet() &&
_config.MaxUsagesPerEngine > 0 &&
_engines.Count < _config.MaxEngines)
{
var currentUsages = _engines.Values.Sum();
var maxUsages = _engines.Count * _config.MaxUsagesPerEngine;
var engineAverageOverflow = currentUsages > maxUsages * 0.5;
if (engineAverageOverflow)
{
CreateEngine();
_enginePopulater?.Set();
}
}
}
})
{
IsBackground = true,
Name = "ZeroReact Engine creator"
}
.Start();
new Thread(
() =>
{
while (!_disposedFlag.IsSet() && _config.MaxUsagesPerEngine > 0)
{
_engineMaintenance?.WaitOne();
var engineToDispose = _engines
.Where(x => x.Value >= _config.MaxUsagesPerEngine)
.OrderByDescending(x => x.Value)
.Select(x => x.Key)
.Take(2); //maxiumum 2 engines to dispose
bool anyDisposed = false;
foreach (var engine in engineToDispose)
{
if (!_disposedFlag.IsSet() && _engines.Count >= _config.StartEngines)
{
DisposeEngine(engine);
anyDisposed = true;
}
else
{
break;
}
}
if (!_disposedFlag.IsSet() && anyDisposed)
{
_enginePopulater?.Set();
_engineMaintenance?.Set();
}
}
})
{
IsBackground = true,
Name = "ZeroReact Engine destroyer"
}
.Start();
}