libcamera/include
Laurent Pinchart 98bd9cb8c9 libcamera: signal: Disconnect signal automatically on slot deletion
When a signal is connected to a member function slot, the slot is not
disconnected when the slot object is deleted. This can lead to calling a
member function of a deleted object if the signal isn't disconnected
manually by the slot object's destructor.

Make signal handling easier by implementing a base Object class that
tracks all connected signals and disconnects from them automatically
when the object is deleted, using template specialization resolution in
the Signal class.

As inheriting from the Object class may to a too harsh requirement for
Signal usage in applications, keep the existing behaviour working if the
slot doesn't inherit from the Object class. We may reconsider this later
and require all slot objects to inherit from the Object class.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
2019-02-13 13:23:43 +02:00
..
libcamera libcamera: signal: Disconnect signal automatically on slot deletion 2019-02-13 13:23:43 +02:00
linux include: linux: Import V4L2 uAPI headers from Linux v4.19 2019-01-17 16:37:03 +02:00
meson.build include: Install include files 2018-11-27 12:10:57 +00:00