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The embedded brains GmbH & Co. KG is the legal successor of embedded
brains GmbH.
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Updates #4625.
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Updates #3053.
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The _Thread_queue_Extract() does not deal with potential priority
updates and the SMP locking protocol handling. Use
_Thread_queue_Continue(). For the POSIX signals processing this is
currently probably unnecessary, however, the use case is similar to the
restart so use the same appoach.
Close #4546.
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In case the processor set is not large enough to contain the processor
affinity set of the task return RTEMS_INVALID_SIZE instead of
RTEMS_INVALID_NUMBER. This is more in line with other directives since
the issue is related to the size of an object.
Close #4393.
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Replace Objects_Name_or_id_lookup_errors with new Status_Control codes.
Get rid of the _Status_Object_name_errors_to_status lookup table.
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The value of STATUS_CLASSIC_INTERNAL_ERROR must be equal to
RTEMS_INTERNAL_ERROR. Add static assertions to ensure that the status
codes match.
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Use common phrases for the file brief descriptions.
Update #3706.
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Return a status code and differentiate between error conditions.
Update #4007.
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Do not cast to unsigned int to avoid an unsigned long long enum type.
Use a multiplication/division instead to preserve the signedness of the
POSIX status.
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Modify the status code returned by _CORE_message_queue_Submit() when it
detects a wait about to happen in an ISR (which would be deadly) to
return a status which translated to EAGAIN instead of ENOMEM.
This is only relevant for POSIX message queues, since Classic API message
queues cannot block on send.
The motivation is to match the "most related" errno value returned from
mq_send() and mq_timedsend() according to POSIX, via Open Group:
[EAGAIN]
The O_NONBLOCK flag is set in the message queue description
associated with mqdes, and the specified message queue is full.
or via the RTEMS POSIX users documentation
EAGAIN
The message queue is non-blocking, and there is no room on the queue
for another message as specified by the mq_maxmsg.
Neither of these matches the case ofi avoided ISR wait perfectly, but
they seem to be the closest equivalent, unless it is desirable to keep a
new non-standard error for this case. It is presumed that this is not
desirable.
The previously returned ENOMEM error value is not documented in either
the Open Group or the RTEMS POSIX uses documentation. A companion patch
corrects the documentation to include this error condition.
Based on the discussion in:
https://lists.rtems.org/pipermail/devel/2020-January/056891.html
closes #3857.
Message-Id: <CAF9ehCW5P12ZkZja4UPYTbdBFUyC1VKVL-tU7nyUtvK1Lz2Z3g@mail.gmail.com>
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Remove THREAD_STATUS_PROXY_BLOCKING and replace it with
STATUS_PROXY_BLOCKING.
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A speciality of the RTEMS build system was the make preinstall step. It
copied header files from arbitrary locations into the build tree. The
header files were included via the -Bsome/build/tree/path GCC command
line option.
This has at least seven problems:
* The make preinstall step itself needs time and disk space.
* Errors in header files show up in the build tree copy. This makes it
hard for editors to open the right file to fix the error.
* There is no clear relationship between source and build tree header
files. This makes an audit of the build process difficult.
* The visibility of all header files in the build tree makes it
difficult to enforce API barriers. For example it is discouraged to
use BSP-specifics in the cpukit.
* An introduction of a new build system is difficult.
* Include paths specified by the -B option are system headers. This
may suppress warnings.
* The parallel build had sporadic failures on some hosts.
This patch removes the make preinstall step. All installed header
files are moved to dedicated include directories in the source tree.
Let @RTEMS_CPU@ be the target architecture, e.g. arm, powerpc, sparc,
etc. Let @RTEMS_BSP_FAMILIY@ be a BSP family base directory, e.g.
erc32, imx, qoriq, etc.
The new cpukit include directories are:
* cpukit/include
* cpukit/score/cpu/@RTEMS_CPU@/include
* cpukit/libnetworking
The new BSP include directories are:
* bsps/include
* bsps/@RTEMS_CPU@/include
* bsps/@RTEMS_CPU@/@RTEMS_BSP_FAMILIY@/include
There are build tree include directories for generated files.
The include directory order favours the most general header file, e.g.
it is not possible to override general header files via the include path
order.
The "bootstrap -p" option was removed. The new "bootstrap -H" option
should be used to regenerate the "headers.am" files.
Update #3254.
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The internal status codes encode a Classic rtems_status_code and error
codes used by the POSIX and C11/C++11 APIs. In case the POSIX API is
disabled, the C11/C++11 support must still work.
Close #3167.
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Add configuration option CONFIGURE_MAXIMUM_THREAD_NAME_SIZE.
Update #2858.
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Update #2556.
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Cast POSIX error codes to unsigned int to avoid undefined behaviour in
case of PTHREAD_BARRIER_SERIAL_THREAD which is -1.
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Task priorities are only valid within a scheduler instance. The
rtems_task_set_scheduler() directive moves a task from one scheduler
instance to another using the current priority of the thread. However,
the current task priority of the source scheduler instance is undefined
in the target scheduler instance. Add a third parameter to specify the
priority.
Close #2749.
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Introduce map/unmap priority scheduler operations to map thread priority
values from/to the user domain to/from the scheduler domain. Use the
map priority operation to validate the thread priority. The EDF
schedulers use this new operation to distinguish between normal
priorities and priorities obtain through a job release.
Update #2173.
Update #2556.
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Use same structure as POSIX API for thread priority conversion to/from
SuperCore.
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Unify the status codes of the Classic and POSIX API to use the new enum
Status_Control. This eliminates the Thread_Control::Wait::timeout_code
field and the timeout parameter of _Thread_queue_Enqueue_critical() and
_MPCI_Send_request_packet(). It gets rid of the status code translation
tables and instead uses simple bit operations to get the status for a
particular API. This enables translation of status code constants at
compile time. Add _Thread_Wait_get_status() to avoid direct access of
thread internal data structures.
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