ADOBE® FLEX® BUILDER™ 3: USING ADOBE FLEX BUILDER 3

ADOBE FLEX BUILDER 3

Using Adobe Flex Builder 3

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The following table describes the columns in the Memory Snapshot view:

You typically use a memory snapshot as a starting point to determine which classes you should focus on for memory

optimizations or to find memory leaks. You do this by creating multiple memory snapshots at different points in time

and then comparing the differences in the Loitering Objects or Allocation Trace views.

You can save memory snapshots to compare an application’s state during a different profiling session. For more infor-

mation, see “Saving and loading profiling data” on page 162.

When you double-click a row in the Memory Snapshot view, the profiler displays the Object References view. This

view displays the stack traces for the current class’s instances. You view the stack traces for the current class’s

instances in the Object References view. For more information about the Object References view, see “Using the

Object References view” on page 169.

You can also limit the data in the Memory Snapshot view by using the profiler filters. For more information, see

“About profiler filters” on page 183.

Using the Object References view

The Object References view displays stack traces for classes that were instantiated in the application.

To open the Object References view, double-click a class name in the Memory Snapshot or Loitering Objects views.

The Object References view displays information about the selected class’s instances.

The Object References view displays data in two tables: the Instances table and the Allocation Trace table.

The Instances table lists all objects that hold references to the current object. The number in parentheses after the

class name is the total number of references to the current object. You cannot view the number of forward references

for an object. If no objects hold references to the specified object, then there will be no objects listed in this table.

This would not normally happen because that object should have been garbage collected if it had no references.

Column Description

Class The classes that had instances in memory at the time that you recorded the memory snapshot.

Package The package that each class is in. If the class is not in a package, then the value of this field is the file name that the class is

in. The number following the dollar sign is a unique ID for that class.

If the Package field is empty, the class is in the global package or the unnamed package.

Instances The number of instances in memory of each class at the time that you recorded the memory snapshot.

Memory The amount of memory, in bytes, that all instances of each class used at the time that you recorded the memory snapshot.

ADOBE FLEX BUILDER 3

Using Adobe Flex Builder 3

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The following example shows the Instances table in the Object References view:

The following table describes the columns in the Instances table:

The Allocation Trace table shows the stack trace for the selected instance in the Instances table. When you select an

instance in the Instances table, the profiler displays the call stack for that instance in the Allocation Trace table.

Column Description

Instance The class of the object that holds a reference to the specified object.

Property The property of the object that holds a reference to the specified object. For example, if you have object o with a

property

i, and assign that property to point to your button’s label:

o.i = myButton.label;

That creates a reference to myButton.label from property i.

id The reference ID of the object that holds the reference to the selected object.