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Memory Validator Help


Searching for memory


Using the Find Memory dialog below, you can search the data in some of the tab views for different types of memory allocations.


Searches can be:


based on allocation location such as in a function, file or module

based on the allocated object such as size, type or address

based on other identifiers like tag id, sequence id, or allocation type



The find memory dialog


To show the Find Memory dialog, choose the menu option below:


menu Query menu instructionStep choose Search... instructionStep displays the Find Memory dialog


Or use the search icon on the Query Toolbar.




The Find Memory dialog has many search options, each of which can be switched on and off.




There is a different instance of the dialog for each of the following tabs:


The Memory tab

The Hotspots tab

The Analysis tab

The Pages tab


Note that the Find Memory dialog can remain open while you inspect the results.



Search Criteria


Each of the desired search options needs to be enabled and criteria specified:


To find objects...

enable the option and choose...

of type

a data type from the drop down list

in function

a function from the list

allocated in file

a file from the list

in module

an .exe, DLL or other module

in heap

a heap ID

with allocation id

the allocation request id

of allocation type

opne of alloc, realloc or free from the dropdown list

with tag tracker

a tag tracker id

by thread id

a thread id


Objects between...



type in the values or choose the current minimum or maximum from the drop down list





sequence ids



For options where there is a set choice of values, the lists show all the options that Memory Validator knows about at the time the dialog is shown.


Where a range is specified, you can enter the same value for the beginning and end of the range.


note If you want to search by object type, note that Memory Validator only fetches type information for each memory location when it is requested. This improves performance, but can mean the drop down list doesn't have all the datatypes in yet. If you don't see a datatype you want, type it in instead, and the list will be updated when possible.



Resetting fields


To start over and create a new set of search criteria, there's a handy reset option:


Reset instructionStep clears all the fields and enables all options as seen in the picture above



Exclusive or inclusive searches


There are two ways of searching:


Exclusive instructionStep search results satisfy all the enabled search criteria


Inclusive instructionStep search results satisfy at least one of the enabled search criteria


As a general rule, exclusive searches return a tightly focused set of results, while inclusive searches return a broader set of results.


For those who prefer logic notation, exclusive searches use AND logic, while inclusive use OR logic.



Performing the search


Once search criteria are enabled, and search mode selected, results can be found


Find... instructionStep matching results in the corresponding tab are highlighted


The colour of selected objects is set on the colours tab of the Global Settings dialog.





In the picture above, the dialog shows a search setup to find:


objects of size 4

objects of type CtestParsing_c.


The results of that search are shown in the Memory tab below, first as an exclusive search and then an inclusive one.


Example results: Exclusive results, showing only the 4 byte CtestParsing_c object allocation:





Example results: Inclusive results, now showing the 4 byte CString objects also selected.