Re: [PATCH] libxl: rework setting the state of virDomainObj

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On 07/08/2015 09:01 AM, Michal Privoznik wrote:
On 08.07.2015 00:34, Jim Fehlig wrote:
Set the state of virDomainObj in the functions that
actually change the domain state, instead of the generic
libxlDomainCleanup function. This approach gives functions
calling libxlDomainCleanup more flexibility wrt when and
how they change virDomainObj state via virDomainObjSetState.

The prior approach of calling virDomainObjSetState in
libxlDomainCleanup resulted in the following incorrect
coding pattern in the various functions that change
domain state

  libxlDomain<DoStateTransition>
    call libxl function to do state transition
    emit lifecycle event
    libxlDomainCleanup
      virDomainObjSetState

Once simple manifestation of this bug is seeing a domain
running in virt-manager after selecting the shutdown button,
even after the domain has long shutdown.

Signed-off-by: Jim Fehlig <jfehlig@xxxxxxxx>
---

I considered emitting the lifecycle event in libxlDomainCleanup,
but IMO it is best to change the state and emit the event where
where the state change actually occurs.

  src/libxl/libxl_domain.c    | 23 ++++++++++++-----------
  src/libxl/libxl_domain.h    |  3 +--
  src/libxl/libxl_driver.c    | 28 ++++++++++++++++++----------
  src/libxl/libxl_migration.c |  8 ++++++--
  4 files changed, 37 insertions(+), 25 deletions(-)
ACK

Thanks again :-).  Pushed now.

Regards,
Jim

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