260d80f42d Update ns_nvm_helper license text and format (#98)
git-subtree-dir: features/frameworks/nanostack-libservice
git-subtree-split: 260d80f42da24fa41656222294abc38f7779bdcf
If same allocator (alloc call) allocates multiple dynamic memory blocks,
the additional blocks are added to extended memory block list, and
the allocator list reference count and total sizes are increased.
When statistics are calculated, it is only needed to process the
allocator list, not the whole memory block list.
Added also optional hash function to calculate the (start) index where
memory block information is stored on extended memory block list. Hash
is calculated from memory block address.
It is expected that hash distributes the free index searches evenly
to whole memory area allocated for extended memory block list. So if
area is large enough, in most cases the index pointed by the hash, or
the index few indexes from that, should be empty and available for use.
Similarly, when memory block is freed, the search for the block on
the extended memory block list, starts from the index pointed by the
hash.
If hash is not used, extended memory block list searches start always
from index 0.
Nanostack dynamic memory tracker tracks memory allocations. It has following
interface:
ns_dyn_mem_tracker_lib_alloc: is called on alloc
ns_dyn_mem_tracker_lib_free: is called on free
ns_dyn_mem_tracker_lib_step: updates the lifetime of individual memory
blocks (is used to detected which blocks are permanent and which
have been allocated lately)
ns_dyn_mem_tracker_lib_allocator_lists_update: updates allocator lists,
there are lists for top allocators, permanent allocators and allocators
going to permanent allocators list
ns_dyn_mem_tracker_lib_max_snap_shot_update: can be used to update memory
maximum usage snap shot, this can be called on alloc if snap shot is
needed
Prevent compilation issues when someone has included <stdint.h> before
a header file that needs to include <ns_list.h>.
Some toolchains like ARM C 5 will not provide UINT_FAST8_MAX in C++
unless __STDC_LIMIT_MACROS is defined, and if this was not defined the
first time <stdint.h> was included, it's too late.
We can get the maximum value for our unsigned list offset by casting -1
to it, thanks to modulo arithmetic.
Currently there are two issues which prevent building Mbed OS with
-std=gnu++11 when using Arm Compiler 6:
* NanostackRfPhys2lp.cpp contains a narrowing conversion in a braced
initializer list
* ns_types.h includes <stdalign.h> which Arm Compiler 6 currently
does not provide
This patch fixes both issues. The first one is fixed by changing the
underlying type of the corresponding enumeration when the code is
compiled as C++11. The second issue is worked around by avoiding the
use of <stdalign.h> header for Arm Compiler versions prior to 6.12.
Nanostack related files moved under 'feature/nanostack'
Common libraries moved to 'features/frameworks'
Allow FEATURE_COMMON_PAL still to be defined in the build so
that we don't break any builds.
Arto Kinnunen
Mika Leppänen
Seppo Takalo
Kevin Bracey
Mikhail Maltsev
Juhani Puurula