* Adjust definition to make the default constructor `constexpr`.
This permits use in classes that want lazy initialization and their
own `constexpr` constructor, such as `mstd::mutex`.
* Add `get_no_init()` method to allow an explicit optimisation for
paths that know they won be the first call (such as
`mstd::mutex::unlock`).
* Add `destroy()` method to permit destruction of the contained object.
(`SingletonPtr`'s destructor does not call its destructor - a cheat
to omit destructors of static objects). Needed if using in a class
that needs proper destruction.
There are two EventQueue.h in mbed-os codebase:
events/EventQueue.h
features/FEATURE_BLE/ble/pal/EventQueue.h
By accident, `mbed compile` generates includes.txt with the correct
order of include search paths. This is not the case for the CMake
exporter: targets with FEATURE_BLE enables fail to compile with errors:
mbed-os/features/cellular/framework/AT/ATHandler.h:99:60: error:
'events' has not been declared
Update all places to always include either "events/EventQueue.h"
or "ble/pal/EventQueue.h": to always find the correct header.
mbed.h has 'using namespace mbed;', hence some of the files skip
adding required namespace to the code, it is always good to specify the
namespace around the elements in header and `using namespace` in
specific CPP files, instead of all
Kevin Bracey
Yogesh Pande
Jarkko Paso
Arto Kinnunen
Volodymyr Medvid
Antti Kauppila
Martin Kojtal
deepikabhavnani