C# timer and thread use
How to deal with lag, multi-threading. Multithreading is easier to read than timer. Let's take a look at the relationship between timer and thread.
There are 3 timeser types
timer under. It is the timer that drags the control to the UI.
The source file is in this path C:\Windows\\Framework64\v4.0.30319
namespace
{
// Abstract: Implement a timer to raise events at user-defined time intervals. This timer is best used in Windows Forms applications and must be used in windows . [DefaultEvent("Tick")]
[DefaultProperty("Interval")][SRDescriptionAttribute("DescriptionTimer")][ToolboxItemFilter("")]
public class Timer : Component
}The startup timer code is as follows:
[SRCategory("CatBehavior")]
[DefaultValue(false)]
[SRDescription("TimerEnabledDescr")]
public virtual bool Enabled
{
get
{
if ( == null)
{
return ;
}
return ;
}
set
{
lock ()
{
if ( != value)
{
= value;
if (!)
{
if (value)
{
if ( == null)
{
= new TimerNativeWindow(this);
}
= (this);
();
}
else
{
if ( != null)
{
();
}
if ()
{
();
}
}
}
}
}
}
}Finally, the source code is called ();
It can be seen that the system's timer is finally called? The system has a timer. On Ucos, there are 32 timers, and of course you can also open threads.
They are different concepts. Windows is about the same. These timers should be CPU-related.
public void StartTimer(int interval)
{
if (this._timerID == 0 && !this._stoppingTimer && ())
{
this._timerID = (int)(new HandleRef(this, ), ++, interval, );
}
}2. public sealed class Timer : MarshalByRefObject, IDisposable
public Timer(TimerCallback callback)
{
int dueTime = -1;
int period = -1;
StackCrawlMark stackCrawlMark = ;
(callback, this, (uint)dueTime, (uint)period, ref stackCrawlMark);
}
[SecurityCritical]
private void TimerSetup(TimerCallback callback, object state, uint dueTime, uint period, ref StackCrawlMark stackMark)
{
if (callback == null)
{
throw new ArgumentNullException("TimerCallback");
}
this.m_timer = new TimerHolder(new TimerQueueTimer(callback, state, dueTime, period, ref stackMark));
}
[SecurityCritical]
internal static void Pause()
{
();
}
[SecurityCritical]
internal static void Resume()
{
();
}Here is the operation of the TimerQueue queue. Since it is under the Threading namespace, it may be related to threads. The dll he is in is mscorlib.
3. , in. Just the right package.
[TimersDescription("TimerEnabled")]
[DefaultValue(false)]
public bool Enabled
{
get
{
return ;
}
set
{
if ()
{
= value;
= value;
}
else if ()
{
= value;
}
else if ( != value)
{
if (!value)
{
if ( != null)
{
= null;
();
= null;
}
= value;
}
else
{
= value;
if ( == null)
{
if ()
{
throw new ObjectDisposedException(().Name);
}
int num = (int)();
= new object();
= new (, , num, ? num : (-1));
}
else
{
();
}
}
}
}
}4. Use:
void Application_Start(object sender, EventArgs e)
{
// Code running at application startup if (timer != null)
{
();
();
timer = null;
}
int Interval = 3600000;//6 hours
timer = new (Interval);//Ten minutes += SendSMS.Send_ticker;
= Interval;
= true;
();
}C# new thread delay
Open a new thread
In this thread, queue tasks.
After task 1 is completed, wait for the delay of 200ms, and then run task 2
private void Timer1_Tick(object sender, EventArgs e)
{
//throw new NotImplementedException();
(() =>
{
( new Action( () =>
{
("Into interrupt"+() + "\r\n");
}));
//RS485.Set_io(7);//ok
//RS485.Rest_io(7);//ok
if (i > 8) i = 0;
RS485.Set_io(i++);//ok
(new Action(() =>
{
("First output" + () + "\r\n");
}));
(200);
RS485.Rest_io((ushort)(i - 2));//ok
(new Action(() =>
{
("2nd output" + () + "\r\n");
}));
(200);
//RS485.Read_io_out(0,8);//ok
RS485.Read_io_in(0, 8);//ok
(new Action(() =>
{
("3rd output" + () + "\r\n");
}));
//RS485.Read_io_Reg(0,4);//
//RS485.Read_io_Regs(0, 6);//
(200);
});
}The above is personal experience. I hope you can give you a reference and I hope you can support me more.