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Re: [cdt-dev] Interacting with GDB/MI through Eclipse console

Try to find a command that does require user input and check how it is
implemented. I think command like to create a new gdb function (or
needs input (it is cdt command not mi - but should not be different)

On Sat, Jan 23, 2010 at 3:25 PM, Rohit Girme <rgirme@xxxxxxx> wrote:
> Hi guys,
> I have been partially able to add a new MI command to GDB and to CDT. I can
> call a test GDB/MI command which displays "Hello", from the Eclipse UI. I
> embedded a call to my function/ MI command in the stepinto() function. So
> when I press the stepinto button in Eclipse UI, my test command in 'gdb'
> gets called and "Hello" is displayed in the Eclipse Console.
> The real command which I now intend to call from Eclipse UI requires user
> input. It processes the user input and then displays the result. If I try
> calling this command using the method similar to the test command (the
> command displaying "Hello"), Eclipse hangs. Rather at the backend 'gdb'
> waits for user input which it does not receive. I have a scanf statement in
> the function corresponding to my gdb command. Since that scanf does not
> receive any data, everything stops working. I guess gdb when working through
> the MI interface requires some out of band result records like *stopped or
> ^running which it then interprets and displays result accordingly. Hence
> there is no output.
> If I hardcode the user input, without asking the user for it (commenting the
> scanf statement), and run Eclipse I receive the output on the Eclipse
> Console as necessary. Because this time at the end of the function gdb knows
> that the function for my command is over.
> But if I ask user to input the values, nothing happens as explained above. I
> thought that Eclipse will display the prompt "Enter your Choice" as my
> function in gdb does if I run the command in the Terminal. But that does not
> happen too. Is there any way to tell the GDB/MI that user input is needed
> and to display the prompt on the Eclipse console ? Because normal command
> like step or resume or step over do not need user input so I cannot make any
> sense even after reading that code.
> Can anyone please help me on this ? If you have not understood my issue
> please let me know I will try to further clarify it. Thanks for your help
> guys.
> --
> Thanks & Regards,
> Rohit Girme
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> cdt-dev mailing list
> cdt-dev@xxxxxxxxxxx

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