genode/repos/ports/include/vmm
Norman Feske 6b289a1423 base/core: use references instead of pointers
This patch replaces the former prominent use of pointers by references
wherever feasible. This has the following benefits:

* The contract between caller and callee becomes more obvious. When
  passing a reference, the contract says that the argument cannot be
  a null pointer. The caller is responsible to ensure that. Therefore,
  the use of reference eliminates the need to add defensive null-pointer
  checks at the callee site, which sometimes merely exist to be on the
  safe side. The bottom line is that the code becomes easier to follow.

* Reference members must be initialized via an object initializer,
  which promotes a programming style that avoids intermediate object-
  construction states. Within core, there are still a few pointers
  as member variables left though. E.g., caused by the late association
  of 'Platform_thread' objects with their 'Platform_pd' objects.

* If no pointers are present as member variables, we don't need to
  manually provide declarations of a private copy constructor and
  an assignment operator to avoid -Weffc++ errors "class ... has
  pointer data members [-Werror=effc++]".

This patch also changes a few system bindings on NOVA and Fiasco.OC,
e.g., the return value of the global 'cap_map' accessor has become a
reference. Hence, the patch touches a few places outside of core.

Fixes 
2019-02-12 10:33:13 +01:00
..
guest_memory.h Streamline exception types 2017-05-31 13:16:07 +02:00
log.h vbox4/5: remove printf 2017-05-31 13:16:19 +02:00
types.h Adjust file headers to refer to the AGPLv3 2017-02-28 12:59:29 +01:00
utcb_guard.h nova: fix syscall bindings with GCC 6 2017-05-31 13:15:52 +02:00
vcpu_dispatcher.h pthread: prevent copy of Genode::Thread object 2018-01-17 12:14:34 +01:00
vcpu_thread.h base/core: use references instead of pointers 2019-02-12 10:33:13 +01:00