Add add-standard-as-possible version of C++11 <mutex>.
A lot of the stuff in there is generic, but the actual mutex classes and
call_once need to interface with the OS.
For those, they're not available in ARMC5 or IAR; retargetting would be
necessary for ARMC6 and GCC, and I've yet to investigate how whether
that's possible. So for now I'm using local implementations.
Although `Mutex` in principle could support `timed_mutex` and
`recursive_timed_mutex`, we don't have `chrono` for the time parameters,
so hold off for now.
For the generic stuff like mstd::unique_lock, they are aliased to
std::unique_lock where possible.
* 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.
Regularise the C++ support glue, adding `<mstd_type_traits>` etc.
These include the base toolchain file, backfill `namespace std` as much
as possible for ARM C 5, and then arrange to create unified
`namespace mstd`, which can incorporate toolchain bypasses
(eg `mstd::swap` for ARM C 5, or `mstd::atomic`), and include local
implementations of post-ARM C++14 stuff.
All APIs in `namespace mstd` are intended to function as their
`namespace std` equivalent, and their presence there indicates they
are functional on all toolchains, and should be safe to use in
an Mbed OS build (including not unreasonable memory footprint).
See README.md for more info.
Do not specify the debug level for develop and release profiles. Instead
rely on the compiler to choose sensible default (-g2). Note that -g1 is
minimal debugging information and does not include structure definitions
which quite heavily reduces debugging experience.
For develop and release profiles this results in elf file containing
structure definitions. This does not impact debug profile as it already
did use -g3 which is the highest debug level.
Compatible debuggers (eg. gdb, SEGGER Ozone) can use the extra information
to provide better debugging experience. For example, when compiled .elf is
loaded in gdb, this change makes it trivial to access internal RTX data.
Without this change on develop profile:
(gdb) print osRtxInfo.thread.run
'osRtxInfo' has unknown type; cast it to its declared type
With this change on develop profile:
(gdb) print osRtxInfo.thread.run
$1 = {curr = 0x20014F04, next = 0x20014F04}
As something of a cheat, exclude platform/cxxsupport from astyle.
astyle really can't process the sort of template metaprogramming going
on in there; treat it as a "black box" like the toolchains' own
libraries.
For all compilers add post-C++14 stuff to namespace mbed:
* invoke, invoke_result, is_invocable, is_invocable_r,
is_nothrow_invocable, is_nothrow_invocable_r, unwrap_reference,
unwrap_ref_decay
For ARM C 5, add C++11 bits based on above to namespace std:
* result_of, reference_wrapper, ref, cref, mem_fn
The IRQ disable was always disabling both rising
and falling edges of the interrupt thereby causing
failures in cases when one of the two should stay enabled.
Signed-off-by: Mahesh Mahadevan <mahesh.mahadevan@nxp.com>
Ari Parkkila
Seppo Takalo
int_szyk
Marcin Tomczyk
Kyle Kearney
Ben Cooke
Kevin Bracey
Neil Tuttle
Vladislav Talanov
Tomasz Moń
Mahesh Mahadevan
Balaji
George Beckstein