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adds .cvsignore.
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that contains:
* Removes remaining (now illegal) references to $(SRC) from a couple of
Makefile.ams
* Removes duplicate AC_CONFIG_SUBDIRS macro from c/configure.in
* Moves ENABLE_LIBCDIR into RTEMS_PROG_C[C|XX]_FOR_TARGET (hides LIBCDIR
from most configure scripts, i.e. LIBCDIR becomes less visible)
* Adds RTEMS_PROG_C[C|XX]_FOR_TARGET and RTEMS_CANONICALIZE_TOOLS to
libbsp/*/configure.ins (A minor bug in previous implementations, which
only has an impact when switching to GNU/Cygnus canonicalization)
* Cleans up several bogus comments.
* Removes MKLIB
* Switches the version number to 4.5.0 (for testing version number
handling)
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<andrew@pogo.wv.tek.com>.
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<andrew@pogo.wv.tek.com>.
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Eric Norum <eric@cls.usask.ca>.
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I'd like to propose a change to RTEMS task variables that I think would
make them more useful. I think that it is early enough in their
existence to still make changes to their API.
1) Change type from `int' to `void *'.
2) Add extra argument to task_variable_add -- if non-NULL, a pointer to
a `destructor' function to be called when the task exits. This function
would be called with that task's value of the task variable as its
argument. In many cases, the `dtor' function could be `free'.
rtems_status_code rtems_task_variable_add (
rtems_id tid, void **ptr, void (*dtor)(void *));
rtems_status_code rtems_task_variable_delete (rtems_id tid, void **ptr);
This would be all we'd need to cleanly and efficiently support C++
per-thread exception information without dragging in all that POSIX API
stuff.
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blocking sends when the queue is full. The SuperCore was enhanced
to support blocking on send. The existing POSIX API was debugged
and numerous test cases were added to psxmsgq01 by Jennifer Averett.
SuperCore enhancements and resulting modifications to other APIs
were done by Joel.
There is one significant point of interpretation for the POSIX API.
What happens to threads already blocked on a message queue when the
mode of that same message queue is changed from blocking to non-blocking?
We decided to unblock all waiting tasks with an EAGAIN error just
as if a non-blocking version of the same operation had returned
unsatisfied. This case is not discussed in the POSIX standard and
other implementations may have chosen differently.
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power binary/mutex style semaphores already supported by RTEMS. This
was done at the request of Eric Norum <eric@cls.usask.ca> in support
of his effort to port EPICS to RTEMS. This change consisted of
changing the nesting_allowed boolean into a lock_nesting_behavior
enumerated value as well as allowing the core mutex object to optionally
support ensuring that the holder of a binary semaphore released it.
Finally, a more subtle enhancement was to allow the non-holder to release
a priority inheritance/ceiling mutex and still allow the holding task
to return to its original priority.
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"mutex" and counting semaphore. This is at the request of Eric Norum
and his EPICS porting effort.
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which (among other things) converted the mptests to automake.
SUB_DIRS was used instead of SUBDIRS in some Makefile.ins
(apparently a leftover from moving the start* directories)
Addtional major bugs:
* psxtests/include was empty (incomplete psxtests changes).
* bogus handling of *.scn in itrontests (screens/sptests vs.
screens/itrontests installation dirs)
In addition I have added a few more changes (I couldn't resist)
* automake support for itrontests
* OPERATION_COUNT support in tmitrontests/
* automake support for tmitrontests
* automake suppport for mptests
* Some (minor) corrections to several configure.in/Makefile.ams
=> c/src/tests/ is completly under automake control, now.
=> we could start to sort out the structural issues with c/src/tests
(tests/support, stubdr, tools, get "make dist" working)
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to convert the libc directory to automake and "dozens of
small fixes for Makefile.ins/configure.ins below c/src/lib."
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.. a major configuration cleanup
... major enhancement of automake support.
... and it contains a *major* breakthough:
Automake support for libchip and libmisc *LEAF* directories.
To implement this I have used several nasty tricks
* The basical trick is to wrap an old Makefile.in's contents into a
Makefile.am and still continue to use (i.e include) the old
*.cfg files.
* Replaced each INSTALL_IF_CHANGE and INSTALL_VARIANT with make
dependencies
* Add a gnu-make ifdef AUTOMAKE to main.cfg to avoid conflicts between
automake and RTEMS make rules
* Replaced each install:: and preinstall:: rule with make dependencies
* Replaced SUB_DIRS with SUBDIRS in all Makefile.ins (Automake
convention)
* Removed each manually added autoconf substitution which automake
performs automatically.
This is not yet full automake support, because using the temporary
installation directory, preinstallation in general and building variants
are in contradiction to automake's basic working principles ...
... the new Makefile.ams work still somewhat clumsy
... nevertheless they work (quite well).
WARNING:
At first glance this patch is small, but
* it affects the whole configuration system.
* it opens the road to introducing automake to all Makefile.ins
currently not being under automake control.
JOEL> Does this remove or add any files?
Both, all Makefile.ins below libchip and libmisc get replaced with
Makefile.ams.
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RTEMS API extension to avoid problems when the extension is freed.
Eventually the task variable switch extension should become part
of the core context switch and the Ada tcb self implemented in
terms of it.
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it is now typedef'ed.
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just "rtems_task_variable_t".
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task_variables field to API extension, and two directives
(rtems_task_variable_add and rtems_task_variable_delete).
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After being submitted, this support was rewritten to be inside the
executive rather than layered on top of it using an extension.
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Working Group. Included are tests.
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particular, using bsp.h, or getting information from the BSP which
should properly be obtained from RTEMS is forbidden. This is
necessary to strengthen the division between the BSP independent
parts of RTEMS and the BSPs themselves. This started after
comments and analysis by Ralf Corsepius <corsepiu@faw.uni-ulm.de>.
The changes primarily eliminated the need to include bsp.h and
peeking at BSP_Configuration. The use of Cpu_table in each
BSP needs to be eliminated.
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is added in the future.
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_RTEMS_tasks_Start_extension, _RTEMS_tasks_Delete_extension, and
_RTEMS_tasks_Switch_extension.
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maximum semaphore count is exceeded.
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and initialize it to a value that would keep it from every being
a problem.
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Eric Norum.
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where wrapup left pieces out of the librtemsall.a.
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Ralf Corsepius <corsepiu@faw.uni-ulm.de> which converted many
Makefile.in's to Makefile.am's. This added a lot of files.
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in the compiler not in the header file.
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old_priority parameter is provided.
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