RTOS

Records in reverse chronological order.

v6.3.17 2023-05-21

0869a4b os-version.h: remove -beta
77b2b44 os-memory.h: disable doxy for operator()
5910137 c-syscalls: disable doxygen

2023-05-08

2f1a3b8 #75: cannot clear members in destructor

2023-05-04

46e2836 #76: Exclude socket definitions used by LWIP

2023-05-03

9ecdf5d #75: Revert statically initialised lists to BSS

v6.3.16 2023-05-03

[#74]: add the os_thread_kill() wrapper to thread::kill()

v6.3.15 2018-11-19

[#47] stack::available() comment (size in bytes)
[#46]: protected mutex, do not keep ownership if error
[#45]: rtos/os-core.cpp: check locked()

v6.3.14 2018-07-04

[#44] os_main.cpp: add os_main_thread cast
[#35] add missing _fini()
[#17] fix _LITE_EXIT redefinition
rtos/thread: unlock dangling mutexes
add support for Chan FatFS to the POSIX I/O layer
add file_descriptors_manager::used() to tell how many file descriptors are used
[#41] add nonstandard timegm(), as the opposite of gmtime()
implement alignment in memory allocators
[#40] posix: add statvfs()/fstatvfs()
[#36] posix: add tcdrain()/tcflush()/tcgetattr()/tcsendbreak()/ tcgetattr() to POSIX aliases
[#29] add thread top try/catch for exceptions; support for C++ exceptions was tested and is now available
[#20] add sys/ioctl.h

v6.3.13 2017-08-26

posix-io/c-syscalls-posix.cpp: __posix_gettimeofday() calls rtclock.now ()
add posix/termios.h
add posix-io/tty class
posix/*.h: update guard macros

v6.3.12 2017-08-24

[#13] Fix typo (aquire -> acquire)
[#13] fix typos in documentation
replace most CMSIS++ references by µOS++

v6.3.11 2017-01-02

os-mqueue.cpp: remove wrong assert from *_receive()
cortexm/os-core.cpp: setMSP() with uint32_t* volatile vectors_addr
cortexm/os-core.cpp: align thread stack to 8 byte boundary
cortexm/os-core.cpp: assert both thread stack and MSP aligned

v6.3.10 2016-11-27

os-clocks: check timestamps to trigger timer actions after deep sleep
first-fit-top: fix free list chunk init
startup/initialize-hardware.c: use __ARM_FP instead of __VFP_FP__
micro-os-plus-iii-cortexm.git/os-core: fix PendSV stack frame for FP
micro-os-plus-iii-cortexm.git/os-core: fix setMSP() optimisation bug

v6.3.9 2016-10-13

assert stack size > min_size_bytes_
diag/trace.cpp: puts() accepts empty string
rtos/os-main.cpp: display interrupts stack size
rtos/os-clock: add update_for_slept_time()
rename tests -> test
reorganise test with subfolders
rework xpack.json (rename to µOS++ IIIe)

v6.3.8 2016-10-05

refine thread user storage support, available only when OS_INCLUDE_RTOS_CUSTOM_THREAD_USER_STORAGE
startup: temporarily disable weak os_startup_initialize_hardware()
rename startup.c -> startup.cpp to be able to call C++ code, like the code to initialise the main stack
rename OS_USE_RTOS_PORT_SYSTICK_CLOCK_SLEEP_FOR -> OS_USE_RTOS_PORT_CLOCK_SYSTICK_WAIT_FOR
rename OS_USE_RTOS_PORT_REALTIME_CLOCK_SLEEP_FOR -> OS_USE_RTOS_PORT_CLOCK_REALTIME_WAIT_FOR
os-c-wrapper: fix object creation return values
idle thread: use separate os_rtos_idle_actions ()
integrate posix-io & posix-driver git subtrees
rename folder cmsis-plus/drivers -> cmsis-plus/driver (singular)
update posix-io & posix-driver to all lower case naming convention
add separate utils, with generic utility code, like lists
automate char device registry by using lists; no more need to manually add/remove devices

v6.3.7 2016-09-14

always include assert_failed() (used by STM HAL)
for ARMv7-M, in default handlers use BKPT(0) only if C_DEBUGEN is enabled, to prevent crashes when not connected to debugger
add os_rtos_idle_enter_power_saving_mode_hook()
rename include folder cmsis-plus/iso -> cmsis-plus/estd
add memory resource manager first-fit-top for variable size allocations
add memory resource manager lifo for one-time allocations
add memory resource manager null to completely disable dynamic allocations
add os_startup_initialize_free_store() to initialise the application free store
if OS_INTEGER_RTOS_DYNAMIC_MEMORY_SIZE_BYTES is defined, optionally initialise a separate RTOS system allocation area and class specific pools
adjust _sbrk() to acknowledge all available RAM is used
refurbish C malloc & C++ new/delete to be thread safe and use the memory resource manager
for bare bone, if dynamic memory is not used, the default manager is null_resource
for POSIX, the default is malloc_resource
the standard definitions were moved to the C++17-like estd::pmr namespace
estd::malloc() is no longer needed and was removed, the standard malloc() is now thread safe
a C API was added for memory resources
add statistics to memory_resource
rename C API _create -> _construct, _destroy -> _destruct (add compatibility macros for the old names)
to make use of the system allocator in system classes, add custom new/delete operators to class object_named_system, and use it as base for all system objects
add rtos::make_shared<> to use the system allocator (experimental, to be further refined with thread safe)
for Cortex-M, manage the interrupts stack via the thread::stack class; initialise interrupts stack with pattern and check the bottom marker in the idle thread
add os_irq_get_stack() to the C API
add os_terminate_goodbye() to display memory usage statistics
refubish the exit code to avoid crashes when building freestanding apps
rename os_initialize_args() -> os_startup_initialize_args()
rename os_initialize_hardware_early() -> os_startup_initialize_hardware_early()
rename os_initialize_hardware() -> os_startup_initialize_hardware()
add out of memory hooks to memory managers
add os_terminate() as a portable function to terminate the application (implemented as reset on Cortex-M)
add the block_pool class to manage pools of memory blocks
add block_pool_typed_allocated and block_pool_typed_inclusive templates
add first_fit_top_allocated and first_fit_top_inclusive templates
add lifo_allocated and lifo_inclusive templates
add os_startup_create_thread_idle() as weak
add OS_INTEGER_RTOS_ALLOC_MUTEX_POOL_SIZE and similar, to create pools of storage for system objects
rename thread_static<> -> thread_inclusive<>
rename memory_pool_static<> -> memory_pool_inclusive<>
rename message_queue_static<> -> message_queue_inclusive<>

Problematic incompatible changes

Experience proved that one of the above changes was trickier than planned: the rename of the os_startup_initialize_hardware(), since without the renamed function the linker used the weak version of this function. To help developers, the weak definition was temporarily disabled, so if this function was not yet renamed in the application, the linker will complain.

v6.3.6 2016-08-07

move lists to internal::
rename named_object -> internal::object_named
rename clocked_attributes -> internal::attribute_clocked
rename Allocator -> allocator_type
add thread::priority_inherited(), thread::priority_inherited(int)
make thread::priority() public
reimplement POSIX mutex inheritance
implement POSIX robust mutexes
make default mutex inheritable
add class mutex_recursive
prefix protected functions with internal_

v6.3.5 2016-07-31

addd OS_TRACE_RTOS_LISTS_CLOCKS
refurbish scheduler lock(), unlock(), locked(state_t)
rename os_irq_status_t -> os_irq_state_t
rename interrupts::status_t -> interrupts::state_t
flags clear() no longer accept 0 mask; use flags::all
add mutex accessors type(), protocol(), robustness()
add class double_list_iterator; use it in waiting_threads_list
rename timer::periodic_attributes -> timer::attributes_periodic
add internal::event_flags; not public.

v6.3.4 2016-07-21

rtos/os-semaphore: remove defaults, initial value must be explicitly specified
doxy: re-enable Operators section
rtos/os-mutex: add consistent_ & recoverable_ flags; not yet fully functional
rename recursive_attributes -> attributes_recursive
rename recursive_initializer -> initializer_recursive
rename normal_initializer -> initializer_normal
rename os_mutex_attr_init_recursive() -> os_mutex_attr_recursive_init()
rtos: add scheduler::preemptive() & scheduler::preemptive(bool)
add OS_BOOL_RTOS_SCHEDULER_PREEMPTIVE
add os_sched_is_preemptive() & os_sched_set_preemptive().

v6.3.3 2016-07-11

rtos/c api: add os_clock_get_hrclock()
doxy: add details for thread attributes
rtos/thread state: remove inactive, os_thread_state_inactive
rtos/thread: rename sched_prio() -> priority()
rename os_thread_get_priority(), os_thread_set_priority()
rtos/thread: rename thread::sched_state() -> state()
rename os_thread_get_state().

v6.3.2 2016-07-11

fix thread::flags_try_wait() spelling
semaphores refurbished (make default as binary, add classes semaphore_binary and semaphore_counting)
add binary_attributes
os-semaphore: add explicit initial_value to os_semaphore_attr_binary_init() and os_semaphore_binary_create()
os-semaphore: rename attributes_binary, attributes_counting, initializer_binary

v6.3.1 2016-07-10

validation: waiting function are allowed only if scheduler is not locked
thread waiting renamed suspended
os_thread_stack_get_bottom(), os_thread_stack_get_top(), os_thread_stack_check_bottom_magic(), os_thread_stack_check_top_magic() added
os_thread_stack_element_t and os_thread_stack_allocation_element_t added to C API
flags_clear(), flags_get() moved from thread to this_thread
for consistency reasons, thread signals were renamed thread event flags

v6.2.1 2016-06-21

First fully functional reference implementation. The C and C++ APIs were completely refurbished and use all lower case letters.

Changes, in reverse chronological order:

C API updated, with complete reference manual
rename OS_USE_SEMIHOSTING_SYSCALLS
add OS_EXCLUDE_RTOS_IDLE_SLEEP
rename header <cmsis-plus/os-app-config.h>
support for SEGGER RTT added
thread statistics (context switches & cpu cycles)
high resolution clock added
add iterators to get thread children
add iterators to C API
implement intrusive lists for threads
check stack overflow with each context switch
update the ISO C++ API & add to tests
templates for static allocation
complete refurbish of C++ API to use embedded classes instead of namespaces
add explicit object names to all objects constructors
update all to lower case
add new_delete_allocator
prefix all init functions with os_
many other, too many to mention, inherent for first versions...

v0.1.1 2016-03-11

initial version of the APIs announced on ARM Connected Community