Packageflash.sampler
Classpublic class Sample
InheritanceSample Inheritance Object
Subclasses DeleteObjectSample, NewObjectSample

Language Version: ActionScript 3.0
Runtime Versions: AIR 1.0 Flash Player 9.0.115.0

The Sample class creates objects that hold memory analysis information over distinct durations. For Flash Player debugger version only.

View the examples

See also

flash.sampler.getSamples()

Public Properties
 PropertyDefined By
 Inheritedconstructor : Object
A reference to the class object or constructor function for a given object instance.
Object
 Inheritedprototype : Object
[static] A reference to the prototype object of a class or function object.
Object
Public Methods
 MethodDefined By
 Inherited
hasOwnProperty(name:String):Boolean
Indicates whether an object has a specified property defined.
Object
 Inherited
isPrototypeOf(theClass:Object):Boolean
Indicates whether an instance of the Object class is in the prototype chain of the object specified as the parameter.
Object
 Inherited
propertyIsEnumerable(name:String):Boolean
Indicates whether the specified property exists and is enumerable.
Object
 Inherited
setPropertyIsEnumerable(name:String, isEnum:Boolean = true):void
Sets the availability of a dynamic property for loop operations.
Object
 Inherited
toLocaleString():String
Returns the string representation of this object, formatted according to locale-specific conventions.
Object
 Inherited
toString():String
Returns the string representation of the specified object.
Object
 Inherited
valueOf():Object
Returns the primitive value of the specified object.
Object
Public Constants
 ConstantDefined By
  stack : Array
Contains information about the methods executed by Flash Player over a specified period of time.
Sample
  time : Number
The microseconds that define the duration of the Sample instance.
Sample
Constant Detail
stackConstant
public const stack:Array

Language Version: ActionScript 3.0
Runtime Versions: AIR 1.0 Flash Player 9.0.115.0

Contains information about the methods executed by Flash Player over a specified period of time. The format for the stack trace is similiar to the content shown in the exception dialog box of the Flash Player debugger version. For Flash Player debugger version only.

timeConstant 
public const time:Number

Language Version: ActionScript 3.0
Runtime Versions: AIR 1.0 Flash Player 9.0.115.0

The microseconds that define the duration of the Sample instance. For Flash Player debugger version only.

Examples How to use this example
SampleTypesExample.as

The following example uses the stack and time properties of a Sample object s to collect memory samples. The samples contain NewObjectSample objects (the newSamples array), DeleteObjectSample objects (the delSamples array), and CPU memory sample objects (the cpuSamples array). To use the memory profiler, you need to have Flash Player debugger version 9.0.115.0 or later installed. 
package 
{
    import flash.sampler.*
    import flash.system.*
    import flash.utils.*
    import flash.display.Sprite
    public class sampleTypes extends Sprite
    {
      var b:Boolean = true
        public function sampleTypes() {
            flash.sampler.startSampling();
            for(var i:int=0;i<10000;i++)
              new Object();

            var cpuSamples:Array=[];
            var newSamples:Array=[];
            var delSamples:Array=[];
            var ids:Array=[]

            var lastTime:Number=0;
            for each(var s:Sample in getSamples()) {
              
              assert(s.time > 0); // positive
              assert(Math.floor(s.time) == s.time, s.time); // integral
              assert(s.time >= lastTime, s.time + ":" + lastTime); // ascending
              assert(s.stack == null || s.stack is Array)
              if(s.stack) {
                assert(s.stack[0] is StackFrame);
                assert(s.stack[0].name is String);
            }
              
              if(s is NewObjectSample) {
                var nos = NewObjectSample(s);
                assert(s.id > 0, s.id);
                assert(s.type is Class, getQualifiedClassName(s.type));
                newSamples.push(s);
                ids[s.id] = "got one";
              } else if(s is DeleteObjectSample) {
                var dos = DeleteObjectSample(s);
                delSamples.push(s);
                assert(ids[dos.id] == "got one");
              } else if(s is Sample)
                cpuSamples.push(s);
              else {
                assert(false);
              }
              lastTime = s.time;
            }

            trace(b)
            trace(newSamples.length > 0)
            trace(cpuSamples.length > 0)
            trace(delSamples.length > 0)

        }

        private function assert(e:Boolean, mess:String=null):void {
          b = e && b;
          if(true && !e) {
            if(mess) trace(mess);
            trace(new Error().getStackTrace());
          }     
        }         
    }
}



© 2009 Adobe Systems Incorporated. All rights reserved.
Wed Jul 29 2009, 04:58 PM -07:00
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