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Several functions in libcamera classes are marked as thread-bound,
restricting the contexts in which those functions can be called. There
is no infrastructure to enforce these restrictions, causing difficult to
debug race conditions when they are not met by callers.
As a first step to solve this, add an assertThreadBound() protected
function to the Object class to test if the calling thread context is
valid, and use it in member functions of Object subclasses marked as
thread-bound. This replaces manual tests in a few locations.
The thread-bound member functions of classes that do not inherit from
Object are not checked, and neither are the functions of classes marked
as thread-bound at the class level. These issue should be addressed in
the future.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Milan Zamazal <mzamazal@redhat.com>
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Usage of the std::enable_if_t type doesn't need to be prefixed by
typename. Drop the unnecessary keyword.
Reported-by: Jacopo Mondi <jacopo@jmondi.org>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Umang Jain <umang.jain@ideasonboard.com>
Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
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Template argument deduction results in the lvalue and lvalue reference
arguments to the invokeMethod() function causing deduction of the Args
template type to a non-reference type. This results in the argument
being passed by value and copied.
Fix this by using a cv-unqualified rvalue reference parameter type. The
type is then deduced to an lvalue reference when the argument is an
lvalue or lvalue reference, due to a combination of the special template
argument deduction rule for rvalue reference parameter types:
If P is an rvalue reference to a cv-unqualified template parameter
(so-called forwarding reference), and the corresponding function call
argument is an lvalue, the type lvalue reference to A is used in place
of A for deduction.
(https://en.cppreference.com/w/cpp/language/template_argument_deduction)
and the reference collapsing rule
(https://en.cppreference.com/w/cpp/language/reference#Reference_collapsing).
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Umang Jain <umang.jain@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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Remove the verbose #ifndef/#define/#endif pattern for maintaining
header idempotency, and replace it with a simple #pragma once.
This simplifies the headers, and prevents redundant changes when
header files get moved.
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Jean-Michel Hautbois <jeanmichel.hautbois@ideasonboard.com>
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Move the functionality for the following components to the new
base support library:
- BoundMethod
- EventDispatcher
- EventDispatcherPoll
- Log
- Message
- Object
- Signal
- Semaphore
- Thread
- Timer
While it would be preferable to see these split to move one component
per commit, these components are all interdependent upon each other,
which leaves us with one big change performing the move for all of them.
Reviewed-by: Hirokazu Honda <hiroh@chromium.org>
Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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