luosheng/Modbus.Net
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

2017-12-27 Update 3 Add semaphore in FifoController

Browse Source
This commit is contained in:
parallelbgls
2017-12-27 18:22:04 +08:00
parent 786cf51162
commit 61284758e6
1 changed files with 32 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

34
Modbus.Net/Modbus.Net/FifoController.cs
View File

@@ -17,6 +17,10 @@ namespace Modbus.Net
private bool _taskCancel = false;
private int _waitingListMaxCount = 10000;
private Semaphore _taskCycleSema;
/// <summary>
/// 间隔时间
/// </summary>
@@ -28,6 +32,7 @@ namespace Modbus.Net
/// <param name="acquireTime">间隔时间</param>
public FifoController(int acquireTime)
{
_taskCycleSema = new Semaphore(0, _waitingListMaxCount);
AcquireTime = acquireTime;
}
@@ -36,12 +41,14 @@ namespace Modbus.Net
{
try
{
_taskCycleSema.WaitOne();
while (!_taskCancel)
{
if (AcquireTime > 0)
{
Thread.Sleep(AcquireTime);
}
bool sendSuccess = false;
lock (WaitingMessages)
{
if (_currentSendingPos == null)
@@ -50,21 +57,29 @@ namespace Modbus.Net
{
_currentSendingPos = WaitingMessages.First();
_currentSendingPos.SendMutex.Set();
sendSuccess = true;
}
}
if (_currentSendingPos != null)
else
{
if (WaitingMessages.Count <= 0)
{
_currentSendingPos = null;
_taskCycleSema.Close();
sendSuccess = true;
}
if (WaitingMessages.Count > WaitingMessages.IndexOf(_currentSendingPos) + 1)
else if (WaitingMessages.Count > WaitingMessages.IndexOf(_currentSendingPos) + 1)
{
_currentSendingPos = WaitingMessages[WaitingMessages.IndexOf(_currentSendingPos) + 1];
_currentSendingPos.SendMutex.Set();
sendSuccess = true;
}
}
}
if (sendSuccess)
{
_taskCycleSema.WaitOne();
}
}
}
catch (ObjectDisposedException)
@@ -102,5 +117,20 @@ namespace Modbus.Net
{
return WaitingMessages.FirstOrDefault();
}
/// <inheritdoc />
protected override bool AddMessageToList(MessageWaitingDef def)
{
if (WaitingMessages.Count > _waitingListMaxCount)
{
return false;
}
var success = base.AddMessageToList(def);
if (success)
{
_taskCycleSema.Release();
}
return success;
}
}
}