The work areas (RTEMS work space and C program heap) will be initialized
now in a separate step and are no longer part of
rtems_initialize_data_structures(). Initialization is performed with
tables of Heap_Area entries. This allows usage of scattered memory
areas present on various small scale micro-controllers.
The sbrk() support API changes also. The bsp_sbrk_init() must now deal
with a minimum size for the first memory chunk to take the configured
work space size into account.
Script does what is expected and tries to do it as
smartly as possible.
+ remove occurrences of two blank comment lines
next to each other after Id string line removed.
+ remove entire comment blocks which only exited to
contain CVS Ids
+ If the processing left a blank line at the top of
a file, it was removed.
The implementation of RBTree_Next was using an awkward construction to detect
and avoid accessing the false root of the red-black tree. To deal with the
false root, RBTree_Next was comparing node parents with the control node.
Instead the false root can be detected by checking if the grandparent of a
node exists; the grandparent of the tree's true root is NULL by definition
so the root of the tree is found while walking up the tree by checking for
the non-existence of a grandparent.
This change propagates into the predecessor/successor and iterate functions.
In the Red-Black Tree Heap the administration data structures are not
contained in the managed memory area. This can be used for example in a
task stack allocator which protects the task stacks from access by other
tasks.
PR 1729/cpukit
* configure.ac, sapi/include/confdefs.h, sapi/src/exinit.c,
score/Makefile.am, score/preinstall.am,
score/cpu/i386/rtems/score/cpu.h, score/cpu/sparc/cpu_asm.S,
score/cpu/sparc/rtems/score/cpu.h,
score/include/rtems/score/basedefs.h,
score/include/rtems/score/context.h,
score/include/rtems/score/percpu.h, score/src/percpu.c,
score/src/thread.c, score/src/threadcreateidle.c: Add next step in
SMP support. This adds an allocated array of the Per_CPU structures
to support multiple cpus vs a single instance of the structure which
is still used if SMP support is disabled. Configuration support is
also added to explicitly enable or disable SMP. But SMP can only be
enabled for the CPUs which will support it initially -- SPARC and
i386. With the stub BSP support, a BSP can be run as a single core
SMP system from an RTEMS data structure standpoint.
* aclocal/check-smp.m4, aclocal/enable-smp.m4,
score/include/rtems/bspsmp.h, score/include/rtems/score/smplock.h,
score/src/smp.c, score/src/smplock.c: New files.
PR 1635/cpukit
* sapi/src/exinit.c, score/Makefile.am, score/preinstall.am,
score/include/rtems/score/bitfield.h,
score/include/rtems/score/priority.h,
score/include/rtems/score/thread.h,
score/inline/rtems/score/priority.inl,
score/inline/rtems/score/thread.inl,
score/src/threadchangepriority.c, score/src/threadclearstate.c,
score/src/threadready.c, score/src/threadresume.c,
score/src/threadsetpriority.c, score/src/threadsetstate.c,
score/src/threadsettransient.c, score/src/threadsuspend.c:
Refactoring of priority handling, to isolate the bitmap
implementation of priorities in the supercore so that priority
management is a little more modular. This change is in anticipation
of scheduler implementations that can select how they manage tracking
priority levels / finding the highest priority ready task. Note that
most of the changes here are simple renaming, to clarify the use of
the bitmap-based priority management.
* score/include/rtems/score/prioritybitmap.h,
score/inline/rtems/score/prioritybitmap.inl: New files.
* cpukit/sapi/include/rtems/io.h: Documentation.
* cpukit/sapi/src/ioregisterdriver.c: Call from interrupt context is
an error.
* cpukit/sapi/src/iounregisterdriver.c: Disable preemption during
critical section.
* sapi/src/ioregisterdriver.c: Reowork so this is a context switch
disable critical section not interrupt disable critical section.
Hopefully eliminated dead code which showed up in coverage runs.
* sapi/include/rtems/io.h, sapi/src/ioregisterdriver.c: Documenation.
rtems_io_lookup_name() is now deprecated. Added
rtems_io_driver_io_error(). rtems_io_register_driver() is now
thread-safe.
* itron/src/task.c, posix/src/pthread.c, rtems/src/tasks.c,
sapi/src/exinit.c, score/include/rtems/score/apiext.h,
score/src/apiext.c: No APIs currently implemented use the
predriver_hook so disable it until such time as it is used.
* libcsupport/src/gxx_wrappers.c, posix/include/mqueue.h,
posix/include/rtems/posix/semaphore.h,
posix/inline/rtems/posix/barrier.inl,
posix/inline/rtems/posix/key.inl,
posix/inline/rtems/posix/mqueue.inl,
posix/inline/rtems/posix/rwlock.inl,
posix/inline/rtems/posix/semaphore.inl,
posix/inline/rtems/posix/spinlock.inl,
posix/inline/rtems/posix/timer.inl, posix/src/condget.c,
posix/src/mqueuenametoid.c, posix/src/mutexget.c,
posix/src/semaphorenametoid.c, posix/src/semopen.c,
sapi/src/itronapi.c, sapi/src/posixapi.c: Make changes necessary for
all tests to run on SPARC with 16-bit Ids. This required ensuring
that all POSIX and compilering binding code makes a distinction
between the public Id type (e.g. pthread_t, etc.) and the RTEMS
Object_Id type. All POSIX Object Get routines should not take the
POSIX Id type as the argument. Sixteen bit RTEMS Ids should be placed
into the 32-bits reserved by the POSIX API type in a uniform manner
now. This removed all assumptions that the external Id types in POSIX
and ITRON are the same as the internal Object Id type.
* rtems/include/rtems/rtems/regionmp.h, sapi/include/rtems/config.h,
sapi/src/exinit.c, score/Makefile.am,
score/include/rtems/score/object.h,
score/include/rtems/score/objectmp.h, score/src/objectmp.c: Eliminate
Object Handler Initialization routine since it was all for MP
configurations.
* score/src/object.c: Removed.
