/// <summary>
/// 创建新的 Prime 对象。
/// </summary>
/// <param name="id">Id 属性的初始值。</param>
public static Prime CreatePrime(global::System.Int64 id)
{
Prime prime = new Prime();
prime.Id = id;
return prime;
}
/// <summary>
/// 用于向 Prime EntitySet 添加新对象的方法，已弃用。请考虑改用关联的 ObjectSet<T> 属性的 .Add 方法。
/// </summary>
public void AddToPrime(Prime prime)
{
base.AddObject("Prime", prime);
}
static void Main(string[] args)
{
BigInteger maxFound;
Int64 foundCount = 0;
using (var pdb = new PrimeDB())
{
if (!pdb.Primes.Any())
{
maxFound = 2;
}
else
{
var maxId = pdb.Primes.Max(p => p.Id);
var v = pdb.Primes.Single(p => p.Id == maxId);
maxFound = BigInteger.Parse(v.PrimeNumber) + 1;
foundCount = v.Id;
}
}
var max = BigInteger.Parse(new string('9', 9999));
var sw = new Stopwatch();
var a = new ConcurrentBag <BigInteger>();
const int gap = 1000000;
sw.Start();
for (var i = maxFound; i < max; i += gap)
{
var sortedList = new List <BigInteger>();
var last = maxFound;
ParallelFor(i, i + gap, j =>
{
if (j.IsProbablePrime())
{
a.Add(j);
}
});
sortedList.AddRange(a);
sortedList.Sort();
Prime p;
using (var pdb = new PrimeDB())
{
pdb.BeginTransaction();
foreach (var bigInteger in sortedList)
{
p = new Prime
{
Id = ++foundCount,
PrimeNumber = bigInteger.ToString()
};
if (p.Id % 10000 == 0)
{
pdb.Insert(p);
}
if (bigInteger - last > gap)
{
sw.Stop();
Console.WriteLine("{0} -第{1}个- -{2}位- [{3}]", sw.Elapsed, p.Id, p.PrimeNumber.Length,
p.PrimeNumber);
sw.Reset();
sw.Start();
last = bigInteger;
}
}
pdb.CommitTransaction();
}
sortedList.Clear();
while (!a.IsEmpty)
{
BigInteger someItem;
a.TryTake(out someItem);
}
Thread.Sleep(500);
}
Console.WriteLine(sw.Elapsed);
Console.WriteLine(a.Count);
Console.ReadLine();
}
