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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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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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It can be useful to connect a signal to a functor, and in particular a
lambda function, while still operating in the context of a receiver
object (to support both object-based disconnection and queued
connections to Object instances).
Add a BoundMethodFunctor class to bind a functor, and a corresponding
Signal::connect() function. There is no corresponding disconnect()
function, as a lambda passed to connect() can't be later passed to
disconnect(). Disconnection typically uses disconnect(T *object), which
will cover the vast majority of use cases.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Umang Jain <umang.jain@ideasonboard.com>
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The BoundMethodArgs specialization for the void return type is only
needed to avoid accessing the ret_ member variable that is lacking from
the corresponding BoundMethodPack specialization. As the member variable
is only accessed in the invokePack() function, instead of specializing
the whole class we can use SFINAE to select between two different
implementations of the function.
SFINAE can only depend on the function template parameters, not the
parameters of the class template in which the function is defined:
"Only the failures in the types and expressions in the immediate context
of the function type or its template parameter types are SFINAE errors."
We thus can't use the type R in an std::enable_if expression for the
invokePack() function. To work around this, we have to add a type T to
the function template definition, which defaults to R, and use T with
std::enable_if.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Umang Jain <umang.jain@ideasonboard.com>
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The BoundMethodMember specialization for the void return type is only
needed to avoid accessing the ret_ member variable that is lacking from
the corresponding BoundMethodPack specialization. By adding a
BoundMethodPack::returnValue() function to read the member variable, we
can remove the complete BoundMethodMember specialization.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Umang Jain <umang.jain@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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