Changeset c941a98 in rtems for c/src/exec/rtems/include/rtems

Patch from Eric Norum <eric@…> to implement this:

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.