internal ThreadPoolImpl(int minPoolSize, int maxPoolSize)
{
// TODO: check is these defaults make any size
// minimum 4
_minPoolSize = minPoolSize > 0 ? minPoolSize : Math.Max(4, GetNumCores() - 1);
// CLR has max 250 threads per core...
if (maxPoolSize <= 0)
{
// min-max 20;
var maxThreadsMultiplier = 4;
maxPoolSize = (_minPoolSize + 1) * maxThreadsMultiplier;
}
if (maxPoolSize < minPoolSize)
{
maxPoolSize = minPoolSize;
}
var queue = new RunnableQueue(this);
_threadPool = new ThreadPoolExecutor(_minPoolSize, maxPoolSize, 60L, TimeUnit.SECONDS, queue);
// there could be some logic to automatic reduce the number of threads again if they are
// not needed. For now, we have the MemoryPressure approach.
// TODO: MemoryPressure should automatically be called when Android signals memory pressure,
// probalby best from Dot42.Internal.Application.
}
/// <summary>
/// Default ctor
/// </summary>
internal ThreadPoolScheduler(bool isIOScheduler)
{
lowMaxPoolSize = Math.Max(1, numCores - 1);
highMaxPoolSize = isIOScheduler ? lowMaxPoolSize * 2 : lowMaxPoolSize * 3;
var queue = new RunnableQueue();
threadPool = new ThreadPoolExecutor(lowMaxPoolSize, lowMaxPoolSize, 60L, TimeUnit.SECONDS, queue);
queue.Executor = threadPool;
}
