Back to the GeoServer
Now that we’ve designed and implemented a ThreadPool, let’s take advantage of it. The first step is to change usersInBox to take a listener, or callback, as an argument. We update its code to return User objects to the client via the callback so that they can be asynchronously gathered.
The listener implementation in our test simply tracks users passed to its updated callback.
| c9/13/GeoServerTest.cpp | |
| | TEST(AGeoServer_UsersInBox, AnswersUsersInSpecifiedRange) { |
* | class GeoServerUserTrackingListener: public GeoServerListener { |
* | public: |
* | void updated(const User& user) { Users.push_back(user); } |
* | vector<User> Users; |
* | } trackingListener; |
| | |
| | server.updateLocation( |
| | bUser, Location{aUserLocation.go(Width / 2 - TenMeters, ... |
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