Add helper functions wrapping calls to the virtual functions
defined in SpiceCharDeviceCallbacks.
Acked-by: Pavel Grunt <pgrunt@redhat.com>
Acked-by: Frediano Ziglio <fziglio@redhat.com>
Store a reference to the server in the SpiceCharDeviceState struct and
use that rather than the global 'reds' variable
Acked-by: Frediano Ziglio <fziglio@redhat.com>
Since this is public API, we can't easily change the signature of the
function to take a RedsState argument, so instead we apply a hack and
store the reds argument inside the device state struct when the
interface is added, and retrieve it for use later when it is removed.
Acked-by: Pavel Grunt <pgrunt@redhat.com>
In preparation for getting rid of the global 'reds' variable, we need to
pass the RedsState variable to all functions where it is needed. For now
the callers just pass in the global reds variable.
Functions changed:
- reds_mig_fill_wait_disconnect;
- reds_mig_cleanup_wait_disconnect;
- reds_mig_remove_wait_disconnect_client;
- reds_migrate_channels_seamless;
- reds_mig_finished;
- reds_mig_switch;
- reds_enable_mm_time;
- reds_disable_mm_time;
- attach_to_red_agent;
- reds_char_device_add_state;
- reds_char_device_remove_state;
- reds_on_char_device_state_destroy;
- spice_server_char_device_remove_interface;
- migrate_timeout.
Acked-by: Frediano Ziglio <fziglio@redhat.com>
This patch and previous ones want to solve the problem of not having a
context in SpiceCoreInterface. SpiceCoreInterface defines a set of
callbacks to handle events in spice-server. These callbacks allow to
handle timers, watch for file descriptors and send channel events.
All these callbacks do not accept a context (usually in C passed as a
void* parameter) so it is hard for them to differentiate the interface
specified.
Unfortunately this structure is used even internally from different
contexts for instance every RedWorker thread has a different context. To
solve this issue some workarounds are used. Currently for timers a variable
depending on the current thread is used while for watches the opaque
parameter to pass to the event callback is used as it currently points just
to RedChannelClient structure. This however imposes some implicit
maintainance problem in the future. What happens for instance if for some
reason a timer is registered during worker initialization, run in another
thread? What if we decide to register a file descriptor callback for
something not a RedChannelClient? Could be that the program will run
without any issue till some bytes change and weird things could happen.
The implementation of this solution is done implementing an internal "core"
interface that has context specific and use it to differentiate the
context instead of relying on some other, hard to maintain, detail. Then an
adapter structure (name inpired to the adapter pattern) will provide the
internal core interface using the external, public, definition (in the
future this technique can be used to extend the external interface without
breaking the ABI).
Signed-off-by: Frediano Ziglio <fziglio@redhat.com>
Acked-by: Christophe Fergeau <cfergeau@redhat.com>
Some integer type definitions are different between 32 and 64 bit
systems which causes problems in printf. The PRI macros automatically
provide the printf format appropriate for the system.
Signed-off-by: Francois Gouget <fgouget@codeweavers.com>
Acked-by: Jonathon Jongsma <jjongsma@redhat.com>
