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2020-01-20libcamera: bound_method: Avoid deadlock with ConnectionTypeBlockingLaurent Pinchart
ConnectionTypeBlocking always invokes the method through inter-thread message passing, which results in deadlocks if the sender and receiver live in the same thread. The deadlock can easily be avoided by turning the invocation into a direct call in this case. Do so to make ConnectionTypeBlocking easier to use when some of the senders live in the same thread as the receiver while the other senders don't. Extend the object-invoke test to cover this usage. While at it reformat the documentation to avoid long \brief lines. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
2020-01-07test: object-invoke: Test invoking a non-void methodLaurent Pinchart
Test that Object::invokeMethod() can be used to invoke a non-void method. Verify that the return value is correctly propagated to the caller. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
2020-01-07test: object-invoke: Test direct invocationLaurent Pinchart
Test the ConnectionTypeDirect type when the object lives in a different thread. This test passes but generates a memory leak. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
2020-01-03test: object-invoke: Test invocation of method taking a reference argumentLaurent Pinchart
Object::invokeMethod() fails with a compilation error when the invoked method takes a reference argument. Add a test case for this issue. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
2019-11-27test: object-invoke: Delete InvokeObject after thread terminationLaurent Pinchart
The InvokeObject instance is created on the stack in the run() method, and is thus destroyed before the thread the object is bound to terminates. This creates a race condition as the object message handler could be running when the object is deleted. Fix this by moving the InvokeObject to a member field. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
2019-10-29test: object-invoke: Invoke method in blocking modeJacopo Mondi
Change the object-invoke test to perform the second method invocation operation in blocking mode. Signed-off-by: Jacopo Mondi <jacopo@jmondi.org> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
2019-10-29libcamera: object: Add connection type parameter to invokeMethod()Jacopo Mondi
Allow specifying a different connection type than ConnectionTypeQueued for Object::invokeMethod(). Signed-off-by: Jacopo Mondi <jacopo@jmondi.org> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
2019-08-19test: Get event dispatcher from current threadLaurent Pinchart
For all tests that don't otherwise require access to the camera manager, get the event dispatcher from the current thread instead of the camera manager. This prepares for the removal of CameraManager::instance(). Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
2019-08-17test: Add Object::invokeMethod() testLaurent Pinchart
The test verifies correct behaviour of asynchronous method invocation for Object instances. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>