dotMemory 2024.2 Help

Instances

The Instances view shows what instances make up the object set. Use this view as a means to select a specific instance for more detailed analysis.

The list of instances consists of the following columns:

Name

Description

Type

Type name.

Address

Virtual memory address of the instance.

Bytes

The size of the instance in bytes.

Retained bytes

The overall size in bytes of objects exclusively retained by the instance.

Example

Instances view example

Filter objects

You can filter out objects that are of no interest to your analysis by type or string value .

To narrow the list

  • Start typing the desired string pattern. dotMemory will highlight matching strings.

You can make your search more efficient by using the following tips:

  • Use CamelHumps. E.g. fo will return objects of both System.Drawing.Font and MS.Utility.FrugalObjectList types.

  • For instances of the String type, you can search by the string value. Type any string value into the filter field, and dotMemory will highlight matching strings.

  • For string values, you can use regular expressions. For example, ^Client.* will match all strings that start with Client like ClientRequest or ClientController.

  • You can also search for object instances by their memory address. This is useful for tracking specific objects directly.

  • Use special symbols, like wildcards and others. The full list is shown in the table below.

Special symbols and filter examples

Symbol

Description

Example

*

Wildcard

*


All objects in the set

sys.*.data


All types and namespaces that match the pattern. E.g. System.Data, System.Windows.Controls.Datagrid, and System.Windows.Data.Binding.

sys.*.data.


Only namespaces that match the pattern. E.g. System.Windows.Data.Binding but not System.Windows.Controls.Datagrid.

Arrays

[]

Leave only arrays

str[]


Arrays, containing str in their type or namespace. E.g. String[].

[,


[,,


...


or


[,]


[,,]


...

Leave only arrays of the specified or higher (if brackets are not closed) dimension

str[,,


Arrays with the dimension 3 and higher containing str in their type or namespace. E.g. String[,,] and String[,,,].

str[,,]


Three-dimensional arrays containing str in their type or namespace. E.g. String[,,].

!a

Exclude arrays from the result

!a str


Objects (excluding arrays) containing str in their type or namespace. E.g. String but not String[].

Ranked arrays

[N..


[N..]


[N..M]


[N..M, X..Y]


... where N, M, X, Y are integers

Leave only arrays with the specified number of elements

byte[10..100]


Arrays with Byte in their type or namespace with 10 - 100 number of elements. E.g. Byte[98].

byte[10..100, 25..


Two- (or more) dimensional arrays with Byte in their type or namespace with 10 - 100 number of elements in the first dimension and more than 25 elements in the second. E.g. Byte[98, 30, 1000] but not Byte[98].

If range is not specified, the filter is treated as a text filter. For example, byte[1 will match Byte[195] and Byte[1, 50].


byte[1*5] will match Byte[13853].

Generic type arguments

<

Leave only types with generic type arguments

str<


Only objects containing str in their type or namespace and having generic type arguments. E.g. FileStreamStorage<Char> but not List<String>.

<str


Only objects containing str in their generic type arguments. E.g. List<String> but not FileStreamStorage<Char>.

<,


<,,


...


or


<,>


<,,>


...


Leave only objects with the specified number of generic type arguments

fun<,,>


Objects containing fun in their type or namespace and having three generic type arguments. E.g. Func<String, Object, Object>.

fun<str,,task


Objects containing fun in their type or namespace and having three or generic type arguments that match the pattern. E.g. Func<Stream, IAsyncResult, TaskResult, EventArgs>.

!g

Exclude generic type arguments from the search scope

!g str


Objects (that do not have generic type arguments) containing str in their type or namespace. E.g. String but not List<String>.

#c


#struct


#m


#ns

Search by type, value type, method, or namespace.

#ns Feature


Objects containing Feature in their namespace.

Select objects for further analysis

In the Instances view, you can select the following subjects for further analysis:

To select a particular instance

  • Do one of the following:

    • Double-click the instance in the list.

    • Right-click the instance and select Open this instance.

    After this, the Instance from set subject will be added to the Analysis Path and you can use specific instance views to analyze the instance in more details.

To select the objects that are exclusively retained by the analyzed objects set

  • Click the Open retained objects Open objects retained by this set button.

    After this, the Exclusively retained objects subject will be added to the Analysis Path and the list of desired objects will be displayed in the Group by Types view.

Last modified: 24 July 2024