static void UnBalancedRangeInsert(btree bt, int[] range, bool recursv = false)
{
int constthread = 4;
if (range.Length > (2 ^ 12) && !recursv)
{
for (int i = 2, count = 1; count < 5; i *= 2, count++)
{
for (int j = (range.Length / i); j < range.Length; j += (range.Length / i))
{
bt.Insert(range[j]);
}
}
System.Collections.Generic.List<Task> wh = new List<Task>();
for (int i = 1, cnt = 1; cnt <= constthread; i += (range.Length / constthread), cnt++)
{
int start = i;
int end = (range.Length / constthread) * cnt;
var t = new Task(() =>
{
int[] rng = Enumerable.Range(start, end).ToArray();
UnBalancedRangeInsert(bt, rng, true);
});
t.Start();
wh.Add(t);
}
//Task.WaitAll(wh.ToArray());
}
else
{
for (int i = 1; i < range.Length; i++)
{
bt.Insert(range[i]);
}
}
}
static void Main(string[] args)
{
for (int i = 0; i < 20; i++)
{
var rand = new Random();
LockHelper lockhelp = new MonitorLockHelper();
var sw = new System.Diagnostics.Stopwatch();
int[] range = Enumerable.Range(1, (int)Math.Pow(2.0, 23)).ToArray();
//sw.Restart();
//var btTestNoLookupSTRand = new btree(lockhelp);
//RandomRangeInsert(btTestNoLookupSTRand, range, sw, true);
//sw.Stop();
//Console.WriteLine("Random insert single threaded time {0}ms for {1} nodes", sw.Elapsed.TotalMilliseconds, (int)Math.Pow(2.0, 24));
//sw.Restart();
//var btTestNoLookupRand = new btree(lockhelp);
//RandomRangeInsert(btTestNoLookupRand, range, sw);
//Task.WaitAll(wh.ToArray());
//sw.Stop();
//wh.Clear();
//Console.WriteLine("Random insert multi threaded time {0}ms for {1} nodes", sw.Elapsed.TotalMilliseconds, (int)Math.Pow(2.0, 24));
//sw.Restart();
//var btTestNoLookupsST = new btree(lockhelp);
//BalancedRangeInsert(btTestNoLookupsST, range, sw, true);
//sw.Stop();
//Console.WriteLine("Balanced insert single threaded time {0}ms for {1} nodes", sw.Elapsed.TotalMilliseconds, (int)Math.Pow(2.0, 24));
//sw.Restart();
//var btTestNoLookups = new btree(lockhelp);
//BalancedRangeInsert(btTestNoLookups, range, sw);
//Task.WaitAll(wh.ToArray());
//sw.Stop();
//wh.Clear();
//Console.WriteLine("Balanced insert multi threaded time {0}ms for {1} nodes", sw.Elapsed.TotalMilliseconds, (int)Math.Pow(2.0, 24));
sw.Restart();
var bttest = new btree(lockhelp);
BalancedRangeInsert(bttest, range, sw);
var cts = new System.Threading.CancellationTokenSource();
var t = new Task(() =>
{
bool contains = true;
while (!cts.IsCancellationRequested)
{
contains &= bttest.Contains(rand.Next(1, (int)Math.Pow(2.0, 22)));
System.Threading.Thread.Sleep(1);
}
}, cts.Token);
var t2 = new Task(() =>
{
while (!cts.IsCancellationRequested)
{
bttest.Remove(rand.Next(1, (int)Math.Pow(2.0, 22)));
System.Threading.Thread.Sleep(1);
}
}, cts.Token);
t2.Start();
Task.WaitAll(wh.ToArray());
sw.Stop();
cts.Cancel();
Console.WriteLine("Balanced insert multi threaded, w/ lookup and removal time: {0}", sw.Elapsed.TotalMilliseconds);
}
Console.ReadLine();
}
static void RandomRangeInsert(btree bt, int[] range, System.Diagnostics.Stopwatch sw, bool recursv = false)
{
int constthread = 4;
if (range.Length > (2 ^ 8) && !recursv)
{
for (int i = 1, cnt = 1; cnt <= constthread; cnt++)
{
int start = i;
int end = (range.Length / constthread) * cnt;
i = end;
var t = new Task(() =>
{
int[] rng = Enumerable.Range(start, end - start).ToArray();
RandomRangeInsert(bt, rng, sw, true);
});
t.Start();
wh.Add(t);
}
}
else
{
var sw2 = new System.Diagnostics.Stopwatch();
var rand = new Random();
for (int j = 0; j < range.Length; j++)
{
int rnd = rand.Next(range.First(), range.Last());
sw2.Start();
bt.Insert(rnd);
sw2.Stop();
}
//Console.WriteLine("Time taken to randomly insert {0} nodes: {1}ms", range.Length, sw2.Elapsed.TotalMilliseconds);
}
}
static void BalancedRangeInsert(btree bt, int[] range, System.Diagnostics.Stopwatch sw, bool recursv = false)
{
int constthread = 4;
if (range.Length > (2 ^ 8) && !recursv)
{
for (int i = 2, count = 1; count < 5; i *= 2, count++)
{
for (int j = (range.Length / i); j < range.Length; j += (range.Length / i))
{
bt.Insert(range[j]);
}
}
for (int i = 1, cnt = 1; cnt <= constthread; cnt++)
{
int start = i;
int end = (range.Length / constthread) * cnt;
i = end;
var t = new Task(() =>
{
int[] rng = Enumerable.Range(start, end - start).ToArray();
BalancedRangeInsert(bt, rng, sw, true);
});
t.Start();
wh.Add(t);
}
}
else
{
var sw2 = new System.Diagnostics.Stopwatch();
for (int i = 2; i < range.Length; i *= 2)
{
for (int j = (range.Length / i); j < range.Length; j += (range.Length / i))
{
int skip = 0;
if (i > 2)
{
// Skip the previous round
skip = (range.Length / (i / 2));
}
if (j != skip)
{
sw2.Start();
bt.Insert(range[j]);
sw2.Stop();
}
}
//Console.WriteLine("Time taken to balance insert {0} nodes: {1}ms", range.Length, sw2.Elapsed.TotalMilliseconds);
}
}
}