PerformanceMonitor Class

Article
04/11/2014

The PerformanceMonitor class fetches data for processes that are running on the system.

Syntax

class PerformanceMonitor extends Object

Run On

Called

Methods

	Method	Description
	cancelTimeOut	Cancels a previous method call to the setTimeOut method. (Inherited from Object.)
	equal	Determines whether the specified object is equal to the current one. (Inherited from Object.)
	getTimeOutTimerHandle	Returns the timer handle for the object. (Inherited from Object.)
	handle	Retrieves the handle of the class of the object. (Inherited from Object.)
	instance
	instanceCount	Returns the instance count, which is the number of processes in the current snapshot.
	new	Initializes a new instance of the PerformanceMonitor class. (Overrides the new Method.)
	notify	Releases the hold on an object that has called the wait method on this object. (Inherited from Object.)
	notifyAll	Releases a lock on the object that was issued by the wait method on this object. (Inherited from Object.)
	objectOnServer	Determines whether the object is on a server. (Inherited from Object.)
	owner	Returns the instance that owns the object. (Inherited from Object.)
	processId	Returns the processId value of the process that is running this method.
	setTimeOut	Sets up the scheduled execution of a specified method. (Inherited from Object.)
	systemName
	takeSnapshot
	toString	Returns a string that contains the class handle and name, and possibly additional information. (Overrides the toString Method.)
	usageCount	Returns the current number of references, that is, the value of the reference counter, that the object has. (Inherited from Object.)
	wait	Pauses a process. (Inherited from Object.)
	xml	Returns an XML string that represents the current object. (Inherited from Object.)

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Remarks

You can take a snapshot of the system at any time and traverse the counters for any process that is running on the system.

Examples

The following example prints the processId and workingset values for all the currently running processes.

static void pvPerformanceMonitorTest(args a) 
{ 
    int i, j;  
    PerformanceMonitorInstance instance;  
    PerformanceMonitorCounter counter1, counter2;  
  
    PerformanceMonitor pm = new PerformanceMonitor();  
  
    // Take a current snapshot of the system. 
    pm.takeSnapshot ();  
  
    // Traverse all the running processes. 
    for (i= 1; i <= pm.instanceCount(); i++)  
    {  
        instance = pm.instance(i);  
        counter1 = instance.getCounter("ID Process");  
        counter2 = instance.getCounter("Working Set");  
        print instance.name(), " ",  
        counter1.intData(), " ",  
        counter2.intData();  
    } 
    pause;  
}

Inheritance Hierarchy

Object Class
PerformanceMonitor Class