Re: System call support in reversible debugging

[Hui Zhu <teawater@gmail.com>]

No.  munmap is not memory change.  It release memory.

Hui

On Fri, Nov 27, 2009 at 23:11, Sean Chen <sean.chen1234@gmail.com> wrote:
> On Fri, Nov 27, 2009 at 4:04 PM, Hui Zhu <teawater@gmail.com> wrote:
>> This is a old query.  For now, this munmap just can let prec ignore
>> some memory change record entry.
>>
>> You can answer 'no' then inferior will keep exec.  Most of thing will
>> be find.  :)
>>
>> Maybe we need update this query looks not so scary and  do some other update.
>>
>> Thanks,
>> Hui
>>
>> On Fri, Nov 27, 2009 at 14:31, Sean Chen <sean.chen1234@gmail.com> wrote:
>>> Hi,
>>>
>>> Can gdb record system calls without checkpoints or snapshots
>>> currently? If not, is it possible to record the instructions and
>>> reverse the inferior?
>>>
>>> When I recorded fclose(), I got the following message.
>>> The next instruction is syscall munmap.  It will free the memory addr
>>> = 0xb7fe0000 len = 4096.  It will make record target get error.  Do
>>> you want to stop the program?([y] or n)
>>>
>>> Thanks in advance.
>>>
>>> --
>>> Best Regards,
>>> Sean Chen
>>>
>>
>
> Thanks for your reply.
>
> Does it mean that we have to ignore all memory changes in all system
> calls or kernel space code?
>
> --
> Best Regards,
> Sean Chen
>