There is an issue linking dl0* which has not been resolved.
This issue is being tracked but is not considered a release
blocker. This patch is a workaround which disables libdl
for the v850 until the ticket is resolved.
updates 2260.
There is an issue linking dl0* which has not been resolved.
This issue is being tracked but is not considered a release
blocker. This patch is a workaround which disables libdl
for the bfin until the ticket is resolved.
updates 2252.
This enables per-object SMP locks on SMP configurations and is the first
step to support fine-grained locking. On uni-processor configuration
there will be no overhead. The _Objects_Acquire() is intended to
replace _Objects_Get_isr_disable().
Update #2273.
The _Thread_Dispatch() function is quite complex and the time to set up
and tear down the stack frame is significant. Split this function into
two parts. The complex part is now in _Thread_Do_dispatch(). Call
_Thread_Do_dispatch() in _Thread_Enable_dispatch() only if necessary.
This increases the average case performance.
Simplify _Thread_Handler() for SMP configurations.
Update #2273.
Previously, the _Thread_Heir was updated unconditionally in case a new
heir was determined. The _Thread_Dispatch_necessary was only updated in
case the executing thread was preemptible or an internal thread was
unblocked. Change this to update the _Thread_Heir and
_Thread_Dispatch_necessary only in case the currently selected heir
thread is preemptible or a dispatch is forced. Move the schedule
decision into the change priority operation and use the schedule
operation only in rtems_task_mode() in case preemption is enabled or an
ASR dispatch is necessary. This is a behaviour change. Previously, the
RTEMS_NO_PREEMPT also prevented signal delivery in certain cases (not
always). Now, signal delivery is no longer influenced by
RTEMS_NO_PREEMPT. Since the currently selected heir thread is used to
determine if a new heir is chosen, non-preemptible heir threads
currently not executing now prevent a new heir. This may have an
application impact, see change test tm04. Document this change in sp04.
Update #2273.
Empty structures are implementation-defined in C. GCC gives them a size
of zero. In C++ empty structures have a non-zero size.
Add ISR_LOCK_DEFINE() to define ISR locks for structures used by C and
C++.
Update #2273.
