#region Copyright notice and license

// Copyright 2015, Google Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
//     * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//     * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
//     * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

#endregion

using System;
using System.Threading;
using Grpc.Core;
using Grpc.Core.Internal;
using System.Collections.Generic;
using System.Diagnostics;

namespace Grpc.Microbenchmarks
{
    public class ThreadedBenchmark
    {
        List<ThreadStart> runners;

        public ThreadedBenchmark(IEnumerable<ThreadStart> runners)
        {
            this.runners = new List<ThreadStart>(runners);
        }

        public ThreadedBenchmark(int threadCount, Action threadBody)
        {
            this.runners = new List<ThreadStart>();
            for (int i = 0; i < threadCount; i++)
            {
                this.runners.Add(new ThreadStart(() => threadBody()));
            }
        }
        
        public void Run()
        {
            Console.WriteLine("Running threads.");
            var threads = new List<Thread>();
            for (int i = 0; i < runners.Count; i++)
            {
                var thread = new Thread(runners[i]);
                thread.Start();
                threads.Add(thread);
            }

            foreach (var thread in threads)
            {
                thread.Join();
            }
            Console.WriteLine("All threads finished.");
        }
    }
}