Getting the address of a pointer

Collapse
This topic is closed.
X
X
Collapse
 
  • Page of 1
  • Time
  • Show
Clear All
new posts
Previous template Next
  • Rob Nicholson
    #1

    Getting the address of a pointer

    I've got a suspicion that two user (and therefore threads) in an ASP.NET
    application are sharing the same pointers - which they shouldn't be! The
    easiest way for me to possibly debug this is to compare the addresses of the
    pointers but VB.NET has lost ObjPtr so this is a bit tricky.

    Is there a way to debug the address of a variable/pointers like this?

    Thanks, Rob.


    Tags: None
    • Wei-Dong XU [MSFT]
      #2
      RE: Getting the address of a pointer

      Hi Rob,

      Currently I am finding one support professional for you on this issue. When
      any update, we will reply here at the first time.

      Best Regards,
      Wei-Dong XU
      Microsoft Product Support Services
      This posting is provided "AS IS" with no warranties, and confers no rights.
      It is my pleasure to be of assistance.

        Comment

        • Herfried K. Wagner [MVP]
          #3
          Re: Getting the address of a pointer

          Rob,

          "Rob Nicholson" <informed@commu nity.nospam> schrieb:[color=blue]
          > I've got a suspicion that two user (and therefore threads) in an ASP.NET
          > application are sharing the same pointers - which they shouldn't be! The
          > easiest way for me to possibly debug this is to compare the addresses of
          > the
          > pointers but VB.NET has lost ObjPtr so this is a bit tricky.[/color]

          What pointers are you talking about? Are you dealing with unmanaged code?

          --
          M S Herfried K. Wagner
          M V P <URL:http://dotnet.mvps.org/>
          V B <URL:http://classicvb.org/petition/>

            Comment

            • Rob Nicholson
              #4
              Re: Getting the address of a pointer

              > Currently I am finding one support professional for you on this issue.
              When[color=blue]
              > any update, we will reply here at the first time.[/color]

              Hi - doesn't matter now thanks. I didn't need to print out the address in
              the end - that was just my "old ways" showing whereby looking at hex numbers
              to check pointers :-) I was able to simply "?Ptr1 is Ptr2" in the command
              window to achieve the same result.

              Thanks, Rob.


                Comment

                • Peter Huang [MSFT]
                  #5
                  Re: Getting the address of a pointer

                  Hi Rob,

                  As Herfried said, what do you mean by Ptr?
                  If you mean the Object reference, in .NET we can use the
                  Object.Referenc eEquals Method to determines whether the specified Object
                  instances are the same instance.

                  If I have any misunderstandin g, please feel free to post here.
                  Best regards,

                  Peter Huang
                  Microsoft Online Partner Support

                  Get Secure! - www.microsoft.com/security
                  This posting is provided "AS IS" with no warranties, and confers no rights.

                    Comment

                    • Rob Nicholson
                      #6
                      Re: Getting the address of a pointer

                      > What pointers are you talking about? Are you dealing with unmanaged code?

                      The pointers that VB.NET uses all over the place. They might have a new
                      fancy name, but they are pointers still when it comes down to it :-)

                      Rob.


                        Comment

                        • Rob Nicholson
                          #7
                          Re: Getting the address of a pointer

                          > The pointers that VB.NET uses all over the place. They might have a new[color=blue]
                          > fancy name, but they are pointers still when it comes down to it :-)[/color]

                          And before you say, I know they're not really pointers in the C++ sense of
                          the word, i.e. a 32 bit variable that holds the address of something else,
                          e.g. an object :-) But they still *work* like pointers/references. I assume
                          under the hood they are indirect references to the actual object/memory to
                          allow the garbage collector to move this around behind the scenes.

                          Cheers, Rob.


                            Comment

                            • Peter Huang [MSFT]
                              #8
                              Re: Getting the address of a pointer

                              Hi

                              If so I think you means the reference in vb.net.
                              Did my suggestion help you?

                              e.g.
                              Dim o1 as MyClass
                              Dim o2 as New MyClass
                              o1 = o2
                              Object.Referenc eEquals(o1,o2) will be TRUE.


                              Best regards,

                              Peter Huang
                              Microsoft Online Partner Support

                              Get Secure! - www.microsoft.com/security
                              This posting is provided "AS IS" with no warranties, and confers no rights.

                                Comment

                                • Rob Nicholson
                                  #9
                                  Re: Getting the address of a pointer

                                  > If so I think you means the reference in vb.net.[color=blue]
                                  > Did my suggestion help you?[/color]

                                  Yes - but is "o1 is o2" then same?

                                  Cheers, Rob.


                                    Comment

                                    • Herfried K. Wagner [MVP]
                                      #10
                                      Re: Getting the address of a pointer

                                      "Rob Nicholson" <informed@commu nity.nospam> schrieb:[color=blue][color=green]
                                      >> If so I think you means the reference in vb.net.
                                      >> Did my suggestion help you?[/color]
                                      >
                                      > Yes - but is "o1 is o2" then same?[/color]

                                      Yes.

                                      --
                                      M S Herfried K. Wagner
                                      M V P <URL:http://dotnet.mvps.org/>
                                      V B <URL:http://classicvb.org/petition/>

                                        Comment

                                        • Peter Huang [MSFT]
                                          #11
                                          RE: Getting the address of a pointer

                                          Hi Rob,

                                          If you still have any concern for this issue, please feel free to post here.

                                          Best regards,

                                          Peter Huang
                                          Microsoft Online Partner Support

                                          Get Secure! - www.microsoft.com/security
                                          This posting is provided "AS IS" with no warranties, and confers no rights.

                                            Comment

                                            Previous template Next
                                            Working...