Re: [Xen-devel] [PATCH v2 1/2] libxl: rename libxlConsoleCallback

[Joao Martins <joao.m.martins@xxxxxxxxxx>]

On 12/02/2015 12:08 AM, Jim Fehlig wrote:
> On 11/23/2015 11:56 AM, Joao Martins wrote:
>> . to a more generic name i.e. libxlDomainStartCallback,
>> since it will now cover another case other than the console.
>>
>> Signed-off-by: Joao Martins <joao.m.martins@xxxxxxxxxx>
>> ---
>>  src/libxl/libxl_domain.c | 4 ++--
>>  1 file changed, 2 insertions(+), 2 deletions(-)
>>
>> diff --git a/src/libxl/libxl_domain.c b/src/libxl/libxl_domain.c
>> index 40dcea1..a7267b0 100644
>> --- a/src/libxl/libxl_domain.c
>> +++ b/src/libxl/libxl_domain.c
>> @@ -854,7 +854,7 @@ libxlDomainFreeMem(libxl_ctx *ctx, libxl_domain_config 
>> *d_config)
>>  }
>>  
>>  static void
>> -libxlConsoleCallback(libxl_ctx *ctx, libxl_event *ev, void *for_callback)
>> +libxlDomainStartCallback(libxl_ctx *ctx, libxl_event *ev, void 
>> *for_callback)
>>  {
>>      virDomainObjPtr vm = for_callback;
>>      size_t i;
>> @@ -988,7 +988,7 @@ libxlDomainStart(libxlDriverPrivatePtr driver, 
>> virDomainObjPtr vm,
>>      virObjectUnlock(vm);
>>  
>>      aop_console_how.for_callback = vm;
>> -    aop_console_how.callback = libxlConsoleCallback;
>> +    aop_console_how.callback = libxlDomainStartCallback;
> 
> Before pushing, I wanted to change the 'aop_console_how' variable to something
> more generic too, but realized it is the 'const libxl_asyncprogress_how
> *aop_console_how' parameter to libxl_domain_create_{new,restore}. AFAICT, this
> callback is invoked when a console becomes available for the domain. It might 
> be
> possible that network devices have not been created (devid = -1) when the
> callback is invoked. I thought about adding a separate 
> libxlDomainStartCallback
> and registering it with the 'const libxl_asyncop_how *ao_how' parameter, but
> this would change the synchronous behavior of libxlDomainStart and be quite a
> bit more intrusive.
I see, I wasn't aware of that.

> 
> In the end, I think it is best to explicitly call a function that creates the
> ifnames after a successful libxl_domain_create_{new,restore}. See my reply to
> 2/2 for an example of this idea.
OK, Thanks for all the feedback!

Regards,
Joao

> 
> Regards,
> Jim
> 

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