Commit 0fd6f25507 relaxed the thread begin
extension execution environment. This broke the stack check which only
partially initialized the stack pattern in its create extension. Move
the part of the begin extension to the create extension.
This patches some issues with the capture engine:
1. Check is the engine is open in ctrace commands.
2. Check all record open and appends for overflow.
3. Fix the record open to take the size of user data and
not the record header.
4. Use packed structs for data being written to the per
cpu buffers.
5. Remove direct struct access to the capture buffers to
avoid misaligned accesses.
6. Add support to extract records, no struct access to the
capture buffers.
7. Update ctrace to extract records from the capture buffers.
8. Add support to ctrace to always print the task name if it
has one.
9. Add support to manage names or the lack of a name.
10. Range of minor fixes.
11. Fix a long standing bug in ctset's handling of args.
Closes#2780.
This patch fixes a number of bugs in the cache when requests are
made to read close to the end of the file and the data is copied
from the top of the cache buffer to the bottom of the buffer. This
was compounded by attempting to read past the end of the file.
Closes#2754.
This is an optimization for _Thread_queue_Surrender(). It helps to
encapsulate the priority boosting in the priority inheritance thread
queue operations.
Dismantle _Thread_queue_Do_extract_locked() into re-usable parts like
_Thread_queue_MP_set_callout() and _Thread_queue_Make_ready_again().
Use them in _Thread_queue_Surrender() to propare for a new thread queue
surrender operation.
We always build a C++ compiler and building with C++ does not effect
RTEMS or the runtime. This patch always enabled the support. There is
no need to manually enable it any more.
You can disable C++ with '--disable-cxx'.
If an architecture does not have a C++ compiler support is automatically
disabled.
Split up the potential thread priority change in the scheduler
release/cancel job operation. Protect the rate monotonic period state
with a dedicated SMP lock. This avoids a race condition during
_Rate_monotonic_Timeout() while _Rate_monotonic_Cancel() is called on
another processor.
It is possible that the owner of the terminal link of a thread queue
path waits on a thread queue. However, this thread queue has no owner,
e.g. a thread queue of a message queue.
There was a subtile race condition in _Thread_queue_Do_extract_locked().
It must first update the thread wait flags and then restore the default
thread wait state. In the previous implementation this could lead under
rare timing conditions to an ineffective _Thread_Wait_tranquilize()
resulting to a corrupt system state.
Update #2556.
The newly created macro adds any kind of variable into a linker set. It
allows (for example) the saving an execution state of a function using
the following method:
- put a group of different variables into one linker set
- save the memory area containing the group of variables before the
execution of a function
- restore the memory area after the function has been executed
The mutex objects use the owner field of the thread queues for the mutex
owner. Use this and add a deadlock detection to
_Thread_queue_Enqueue_critical() for thread queues with an owner.
Update #2412.
Update #2556.
Close#2765.
The _Thread_Lock_acquire() function had a potentially infinite run-time
due to the lack of fairness at atomic operations level.
Update #2412.
Update #2556.
Update #2765.
Move the priority change due to priority interitance to the thread queue
enqueue operation to simplify the locking on SMP configurations.
Update #2412.
Update #2556.
Update #2765.
Raise the priority under thread queue lock protection and omit the
superfluous thread queue priority change, since the thread is extracted
anyway. The unblock operation will pick up the new priority.
Update #2412.
Update #2556.
Update #2765.
* Fixes a bug with elapsed time calculations misusing absolute time
arguments in nanosleep_helper by passing the requested relative interval.
* Fixes a bug with truncation of absolute timeouts by passing the
full 64-bit value to Thread_queue_Enqueue.
* Share yield logic between nanosleep and clock_nanosleep.
updates #2732
Sebastian Huber
Chris Johns
Kevin Kirspel
Gedare Bloom
Christian Mauderer
Alexander Krutwig