Re: [Qemu-devel] [PATCH 3/8] RunState: Add additional states

[Jan Kiszka <jan.kiszka@siemens.com>]

On 2011-09-01 20:12, Luiz Capitulino wrote:
> Currently, only vm_start() and vm_stop() change the VM state.
> That's, the state is only changed when starting or stopping the VM.
> 
> This commit adds the runstate_set() function, which makes it possible
> to also do state transitions when the VM is stopped or running.
> 
> Additional states are also added and the current state is stored.
> 
> Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
> ---
>  cpus.c      |    1 +
>  migration.c |    8 +++++++-
>  sysemu.h    |   10 +++++++++-
>  vl.c        |   20 ++++++++++++++++++++
>  4 files changed, 37 insertions(+), 2 deletions(-)
> 

...

> diff --git a/vl.c b/vl.c
> index f0b56a4..59f71fc 100644
> --- a/vl.c
> +++ b/vl.c
> @@ -321,6 +321,22 @@ static int default_driver_check(QemuOpts *opts, void *opaque)
>  }
>  
>  /***********************************************************/
> +/* QEMU state */
> +
> +static RunState current_run_state = RSTATE_NO_STATE;
> +
> +bool runstate_check(RunState state)
> +{
> +    return current_run_state == state;
> +}
> +
> +void runstate_set(RunState state)
> +{
> +    assert(state < RSTATE_MAX);
> +    current_run_state = state;

I still think this should check for valid state transitions instead of
blindly accepting what the caller passes in.

Jan

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