* cleanup_func if any (in context settings), add current process to trashbin
* and yields back to maestro.
* From time to time, maestro calls SIMIX_context_empty_trash, which destroy
* cleanup_func if any (in context settings), add current process to trashbin
* and yields back to maestro.
* From time to time, maestro calls SIMIX_context_empty_trash, which destroy