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Improving the perfomance of the coro-prime-sieve algorithm in C# implementation #479

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Improving the perfomance of the coro-prime-sieve algorithm in C# implementation #479

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333 changes: 319 additions & 14 deletions bench/algorithm/coro-prime-sieve/1.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -24,39 +24,344 @@ public static async Task Main(string[] args)

using var cts = new CancellationTokenSource();
var ch = Channel.CreateBounded<int>(s_channelOptions);
_ = GenerateAsync(ch.Writer, cts.Token);

using var output = Console.OpenStandardOutput();

GenerateAsync(ch.Writer, cts.Token);

for (var i = 0; i < n; i++)
{
var prime = await ch.Reader.ReadAsync().ConfigureAwait(false);
Console.WriteLine(prime);
if (!ch.Reader.TryRead(out var prime)
&& !ch.Reader.TryRead(out prime)
&& !ch.Reader.TryRead(out prime)
&& !ch.Reader.TryRead(out prime)
&& !ch.Reader.TryRead(out prime)
&& !ch.Reader.TryRead(out prime)
&& !ch.Reader.TryRead(out prime)
&& !ch.Reader.TryRead(out prime)
&& !ch.Reader.TryRead(out prime)
&& !ch.Reader.TryRead(out prime)

&& !ch.Reader.TryRead(out prime)
&& !ch.Reader.TryRead(out prime)
&& !ch.Reader.TryRead(out prime)
&& !ch.Reader.TryRead(out prime)
&& !ch.Reader.TryRead(out prime)
&& !ch.Reader.TryRead(out prime)
&& !ch.Reader.TryRead(out prime)
&& !ch.Reader.TryRead(out prime)
&& !ch.Reader.TryRead(out prime)

&& !ch.Reader.TryRead(out prime)
&& !ch.Reader.TryRead(out prime)
&& !ch.Reader.TryRead(out prime)
&& !ch.Reader.TryRead(out prime)
&& !ch.Reader.TryRead(out prime)
&& !ch.Reader.TryRead(out prime)
&& !ch.Reader.TryRead(out prime)
&& !ch.Reader.TryRead(out prime)
&& !ch.Reader.TryRead(out prime)

&& !ch.Reader.TryRead(out prime)
&& !ch.Reader.TryRead(out prime)
&& !ch.Reader.TryRead(out prime)
&& !ch.Reader.TryRead(out prime)
&& !ch.Reader.TryRead(out prime)
&& !ch.Reader.TryRead(out prime)
&& !ch.Reader.TryRead(out prime)
&& !ch.Reader.TryRead(out prime)
&& !ch.Reader.TryRead(out prime)

&& !ch.Reader.TryRead(out prime)
&& !ch.Reader.TryRead(out prime)
&& !ch.Reader.TryRead(out prime)
&& !ch.Reader.TryRead(out prime)
&& !ch.Reader.TryRead(out prime)
&& !ch.Reader.TryRead(out prime)
&& !ch.Reader.TryRead(out prime)
&& !ch.Reader.TryRead(out prime)
&& !ch.Reader.TryRead(out prime)

&& !ch.Reader.TryRead(out prime)
&& !ch.Reader.TryRead(out prime)
&& !ch.Reader.TryRead(out prime)
&& !ch.Reader.TryRead(out prime)
&& !ch.Reader.TryRead(out prime)
&& !ch.Reader.TryRead(out prime)
&& !ch.Reader.TryRead(out prime)
&& !ch.Reader.TryRead(out prime)
&& !ch.Reader.TryRead(out prime)

&& !ch.Reader.TryRead(out prime)
&& !ch.Reader.TryRead(out prime)
&& !ch.Reader.TryRead(out prime)
&& !ch.Reader.TryRead(out prime)
&& !ch.Reader.TryRead(out prime)
&& !ch.Reader.TryRead(out prime)
&& !ch.Reader.TryRead(out prime)
&& !ch.Reader.TryRead(out prime)
&& !ch.Reader.TryRead(out prime)

&& !ch.Reader.TryRead(out prime)
&& !ch.Reader.TryRead(out prime)
&& !ch.Reader.TryRead(out prime)
&& !ch.Reader.TryRead(out prime)
&& !ch.Reader.TryRead(out prime)
&& !ch.Reader.TryRead(out prime)
&& !ch.Reader.TryRead(out prime)
&& !ch.Reader.TryRead(out prime)
&& !ch.Reader.TryRead(out prime)
)
{
var readed = ch.Reader.ReadAsync();
prime = readed.IsCompleted ? readed.Result : await readed.ConfigureAwait(false);
}

Span<byte> f = stackalloc byte[(int)Math.Ceiling(Math.Log10(prime)) + 1];
var c = prime;
var wI = 2;
while (c != 0)
{
const byte zero = (byte)'0';
f[^wI] = (byte)(zero + (c % 10));
c = c / 10;
wI += 1;
}

f[^1] = (byte)'\n';

output.Write(f);

var chNext = Channel.CreateBounded<int>(s_channelOptions);
_ = FilterAsync(ch.Reader, chNext.Writer, prime, cts.Token);

FilterAsync(ch.Reader, chNext.Writer, prime, cts.Token);

ch = chNext;
}
cts.Cancel();
}

static async Task GenerateAsync(ChannelWriter<int> writer, CancellationToken ct)
static void GenerateAsync(ChannelWriter<int> writer, CancellationToken ct)
{
for (var i = 2; !ct.IsCancellationRequested; i++)
ThreadPool.QueueUserWorkItem(async delegate
{
await writer.WriteAsync(i, ct).ConfigureAwait(false);
}
for (var i = 2; !ct.IsCancellationRequested; i++)
{
if (!writer.TryWrite(i))
{
try
{
var writed = writer.WriteAsync(i, ct);
if (!writed.IsCompleted) await writed;
}
catch { }
}
}
});
}

static async Task FilterAsync(
static void FilterAsync(
ChannelReader<int> reader,
ChannelWriter<int> writer,
int prime,
CancellationToken ct)
{
while (!ct.IsCancellationRequested)
ThreadPool.QueueUserWorkItem(async delegate
{
var n = await reader.ReadAsync(ct).ConfigureAwait(false);
if (n % prime != 0)
while (!ct.IsCancellationRequested)
{
await writer.WriteAsync(n, ct).ConfigureAwait(false);
if (!reader.TryRead(out var n)
&& !reader.TryRead(out n)
&& !reader.TryRead(out n)
&& !reader.TryRead(out n)
&& !reader.TryRead(out n)
&& !reader.TryRead(out n)
&& !reader.TryRead(out n)
&& !reader.TryRead(out n)
&& !reader.TryRead(out n)
&& !reader.TryRead(out n)
&& !reader.TryRead(out n)
&& !reader.TryRead(out n)
&& !reader.TryRead(out n)

&& !reader.TryRead(out n)
&& !reader.TryRead(out n)
&& !reader.TryRead(out n)
&& !reader.TryRead(out n)
&& !reader.TryRead(out n)
&& !reader.TryRead(out n)
&& !reader.TryRead(out n)
&& !reader.TryRead(out n)
&& !reader.TryRead(out n)
&& !reader.TryRead(out n)
&& !reader.TryRead(out n)
&& !reader.TryRead(out n)

&& !reader.TryRead(out n)
&& !reader.TryRead(out n)
&& !reader.TryRead(out n)
&& !reader.TryRead(out n)
&& !reader.TryRead(out n)
&& !reader.TryRead(out n)
&& !reader.TryRead(out n)
&& !reader.TryRead(out n)
&& !reader.TryRead(out n)
&& !reader.TryRead(out n)
&& !reader.TryRead(out n)
&& !reader.TryRead(out n)

&& !reader.TryRead(out n)
&& !reader.TryRead(out n)
&& !reader.TryRead(out n)
&& !reader.TryRead(out n)
&& !reader.TryRead(out n)
&& !reader.TryRead(out n)
&& !reader.TryRead(out n)
&& !reader.TryRead(out n)
&& !reader.TryRead(out n)
&& !reader.TryRead(out n)
&& !reader.TryRead(out n)
&& !reader.TryRead(out n)

&& !reader.TryRead(out n)
&& !reader.TryRead(out n)
&& !reader.TryRead(out n)
&& !reader.TryRead(out n)
&& !reader.TryRead(out n)
&& !reader.TryRead(out n)
&& !reader.TryRead(out n)
&& !reader.TryRead(out n)
&& !reader.TryRead(out n)
&& !reader.TryRead(out n)
&& !reader.TryRead(out n)
&& !reader.TryRead(out n)

&& !reader.TryRead(out n)
&& !reader.TryRead(out n)
&& !reader.TryRead(out n)
&& !reader.TryRead(out n)
&& !reader.TryRead(out n)
&& !reader.TryRead(out n)
&& !reader.TryRead(out n)
&& !reader.TryRead(out n)
&& !reader.TryRead(out n)
&& !reader.TryRead(out n)
&& !reader.TryRead(out n)
&& !reader.TryRead(out n)

&& !reader.TryRead(out n)
&& !reader.TryRead(out n)
&& !reader.TryRead(out n)
&& !reader.TryRead(out n)
&& !reader.TryRead(out n)
&& !reader.TryRead(out n)
&& !reader.TryRead(out n)
&& !reader.TryRead(out n)
&& !reader.TryRead(out n)
&& !reader.TryRead(out n)
&& !reader.TryRead(out n)
&& !reader.TryRead(out n)
)
{
try
{
var readed = reader.ReadAsync(ct);
n = readed.IsCompleted ? readed.Result : await readed.ConfigureAwait(false);
}
catch { }
}

if (n % prime != 0)
{
if (!writer.TryWrite(n)
&& !writer.TryWrite(n)
&& !writer.TryWrite(n)
&& !writer.TryWrite(n)
&& !writer.TryWrite(n)
&& !writer.TryWrite(n)
&& !writer.TryWrite(n)
&& !writer.TryWrite(n)
&& !writer.TryWrite(n)
&& !writer.TryWrite(n)
&& !writer.TryWrite(n)
&& !writer.TryWrite(n)
&& !writer.TryWrite(n)

&& !writer.TryWrite(n)
&& !writer.TryWrite(n)
&& !writer.TryWrite(n)
&& !writer.TryWrite(n)
&& !writer.TryWrite(n)
&& !writer.TryWrite(n)
&& !writer.TryWrite(n)
&& !writer.TryWrite(n)
&& !writer.TryWrite(n)
&& !writer.TryWrite(n)
&& !writer.TryWrite(n)
&& !writer.TryWrite(n)

&& !writer.TryWrite(n)
&& !writer.TryWrite(n)
&& !writer.TryWrite(n)
&& !writer.TryWrite(n)
&& !writer.TryWrite(n)
&& !writer.TryWrite(n)
&& !writer.TryWrite(n)
&& !writer.TryWrite(n)
&& !writer.TryWrite(n)
&& !writer.TryWrite(n)
&& !writer.TryWrite(n)
&& !writer.TryWrite(n)

&& !writer.TryWrite(n)
&& !writer.TryWrite(n)
&& !writer.TryWrite(n)
&& !writer.TryWrite(n)
&& !writer.TryWrite(n)
&& !writer.TryWrite(n)
&& !writer.TryWrite(n)
&& !writer.TryWrite(n)
&& !writer.TryWrite(n)
&& !writer.TryWrite(n)
&& !writer.TryWrite(n)
&& !writer.TryWrite(n)

&& !writer.TryWrite(n)
&& !writer.TryWrite(n)
&& !writer.TryWrite(n)
&& !writer.TryWrite(n)
&& !writer.TryWrite(n)
&& !writer.TryWrite(n)
&& !writer.TryWrite(n)
&& !writer.TryWrite(n)
&& !writer.TryWrite(n)
&& !writer.TryWrite(n)
&& !writer.TryWrite(n)
&& !writer.TryWrite(n)

&& !writer.TryWrite(n)
&& !writer.TryWrite(n)
&& !writer.TryWrite(n)
&& !writer.TryWrite(n)
&& !writer.TryWrite(n)
&& !writer.TryWrite(n)
&& !writer.TryWrite(n)
&& !writer.TryWrite(n)
&& !writer.TryWrite(n)
&& !writer.TryWrite(n)
&& !writer.TryWrite(n)
&& !writer.TryWrite(n)
)
{
try
{
var writed = writer.WriteAsync(n, ct);
if (!writed.IsCompleted) await writed.ConfigureAwait(false);
}
catch { }
}
}
}
}
});
}
}