static async Task <string> IssueAsynchronousRequestAsync()
{
#if HttpClientAwait
// https://source.dot.net/#System.Net.Http/System/Net/Http/HttpClient.cs,6b7ffca539f4a368
var str = await new HttpClient().GetStringAsync("https://contososyncfusion.azurewebsites.net/");
#elif HttpClientWait
var str = new HttpClient().GetStringAsync("https://contososyncfusion.azurewebsites.net/").Result;
#elif ReadAllTextAsync
// https://source.dot.net/#System.IO.FileSystem/System/IO/File.cs,321993cd4729625c
var str = await File.ReadAllTextAsync("MT078體驗執行緒集區的WorkerIOCPThread.deps.json");
#elif FileOpen
string filename = @"MT078體驗執行緒集區的WorkerIOCPThread.deps.json";
byte[] result;
using (FileStream SourceStream = File.Open(filename, FileMode.Open, FileAccess.Read, FileShare.Read))
{
result = new byte[SourceStream.Length];
await SourceStream.ReadAsync(result, 0, (int)SourceStream.Length);
}
var str = System.Text.Encoding.ASCII.GetString(result);
#elif FileStream
// https://source.dot.net/#System.Private.CoreLib/FileStream.cs,2c203718e302b739
byte[] result;
using (FileStream SourceStream = new FileStream("MT078體驗執行緒集區的WorkerIOCPThread.deps.json",
FileMode.Open, FileAccess.Read, FileShare.Read, 4096, true))
{
result = new byte[SourceStream.Length];
await SourceStream.ReadAsync(result, 0, (int)SourceStream.Length);
}
var str = System.Text.Encoding.ASCII.GetString(result);
#elif EntityFrameworkCore
string str = "Async Result";
AsyncDBContext context = new AsyncDBContext();
List <MyUser> myUsers = new List <MyUser>();
for (int i = 0; i < 10; i++)
{
myUsers.Add(new MyUser()
{
Account = $"Account{Thread.CurrentThread.ManagedThreadId}-{i}",
Name = $"Name{Thread.CurrentThread.ManagedThreadId}-{i}",
Password = $"Password{Thread.CurrentThread.ManagedThreadId}-{i}",
});
}
try
{
context.AddRange(myUsers);
await context.SaveChangesAsync();
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
}
#elif TaskDelay
string str = "Async Result";
await Task.Delay(500);
#endif
// 非同步作業完成後的強制休息
Thread.Sleep(ioThreadSleep);
return(str);
}
static void Main(string[] args)
{
//SetThreadPoolConfiguration();
PrintThreadPoolConfiguration();
PrintSummaryThreadCounts();
#if EntityFrameworkCore
#region 適用於 Code First ，刪除資料庫與移除資料庫
AsyncDBContext context = new AsyncDBContext();
context.Database.EnsureDeleted();
context.Database.EnsureCreated();
#endregion
PrintSummaryThreadCounts();
#endif
var tasks = new List <Task <string> >();
for (int i = 0; i < loopCount; i++)
{
tasks.Add(Task.Run(() =>
{
// 執行非同步作業前的強制休息
Thread.Sleep(workThreadSleep);
return(IssueAsynchronousRequestAsync());
}));
}
#region 若全部非同步工作尚未完成，每秒鐘列印執行緒集區使用情況
var allComplete = Task.WhenAll(tasks);
while (allComplete.Status != TaskStatus.RanToCompletion)
{
Thread.Sleep(monitorThreadUsageSleep);
PrintSummaryThreadCounts();
}
#endregion
}
