tree cf0a5878dc4da6f2abc9776a9f1dc57791a67d17
parent ff59754a3935da7783d05c170a692d44c253cb2b
author Paul Kirth <paulkirth@google.com> 1594698698 +0000
committer Paul Kirth <paulkirth@google.com> 1596582841 +0000

Simplify resource management for allocd

Some resources, such as network or mobile interfaces have complex
multistage configuration. Having classes which can acquire and release
static resources will make managing these resource lifetimes much more
straightforward.

The abstract base class StaticResource, is the common interface that
clients can use to acquire and release resources. The client can
configure the derived static resource class, and then ask for the list
of resources to be acquired. Should any of these operations fail, then
unwinding the operations is still straightforward, and may be achievable
in the destructor.

Thus far only mobile and wireless interface classes have been
implemented, but any new resource types can be supported with minimal
effort.

This commit does not use these classes yet, but ResourceManager is
expected to use them heavily.

Bug: 148823285
Test: make -j
Change-Id: I8c02ed371810e10c72dfe5f4ab88dee5d964f09c