Difference between revisions of "SetPriorityClass"

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(SetPriorityClass - a function that sets the priority class for a specified process.)
(SetPriorityClass - a function that sets the priority class for a specified process.)
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IDLE_PRIORITY_CLASS = Idle performs tasks when the system is idle.
 
IDLE_PRIORITY_CLASS = Idle performs tasks when the system is idle.
 
NORMAL_PRIORITY_CLASS = Normal performs tasks at regular speed.
 
NORMAL_PRIORITY_CLASS = Normal performs tasks at regular speed.
REALTIME_PRIORITY_CLASS = Real Time performs tasks immediately and above all other tasks, including operating system tasks.
+
REALTIME_PRIORITY_CLASS = Real Time performs tasks immediately and above
 +
    all other tasks, including operating system tasks.
  
Use caution when using REALTIME_PRIORITY_CLASS.  It can potentially take so much of the CPU resources that there may not be anything left for other items to run, including operating system requests.
+
Use caution when using REALTIME_PRIORITY_CLASS.  It can potentially take so
 +
much of the CPU resources that there may not be anything left for other items
 +
to run, including operating system requests.
 
</delphi>
 
</delphi>
  

Revision as of 09:39, 25 July 2010

SetPriorityClass - a function that sets the priority class for a specified process. This function is specific to Windows.

<delphi> The SetPriorityClass may have one of the following priority classes:

HIGH_PRIORITY_CLASS = High performs tasks immediately. IDLE_PRIORITY_CLASS = Idle performs tasks when the system is idle. NORMAL_PRIORITY_CLASS = Normal performs tasks at regular speed. REALTIME_PRIORITY_CLASS = Real Time performs tasks immediately and above

    all other tasks, including operating system tasks.

Use caution when using REALTIME_PRIORITY_CLASS. It can potentially take so much of the CPU resources that there may not be anything left for other items to run, including operating system requests. </delphi>

EXAMPLE:

<delphi> uses Windows; // Unit containing the SetPriorityClass function.

procedure TForm1.FormCreate(Sender: TObject); begin

    SetPriorityClass(GetCurrentProcess(), HIGH_PRIORITY_CLASS);
    // Sets the current running application to High Priority.

end;

</delphi>