Authors: Thiago Esteves ([email protected]
).
The Mserver application is dependent on GPROC library and rebar3
This is just an simple example of how to handle multiple gen_servers that are using the exactly same code and are under the same supervisor (this is a different approach than simple_one_for_one)
In order to execute the application just call make:
make
The user can create as many gen_servers as needed:
1> mserver_sup:create_mserver(0).
{ok,<0.149.0>}
2> mserver_sup:create_mserver(1).
{ok,<0.151.0>}
3> mserver_sup:create_mserver(2).
{ok,<0.153.0>}
4> mserver_sup:create_mserver(3).
{ok,<0.155.0>}
5> mserver:find_me(0).
[CALL] I'm here, State: 0
ok
6> mserver:show_yourself(0).
[CAST] I'm here, State: 0
ok
7> mserver_sup:remove_mserver(0).
ok
8> mserver:find_me(0).
{error,invalid_mserver}
The supervisor tree of all gen_servers created can be easily viewed with the observer, try the sequence of commands below and have a look at the Applications->mserver.
1> mserver_sup:create_mserver(0).
{ok,<0.149.0>}
2> mserver_sup:create_mserver(1).
{ok,<0.151.0>}
3> mserver_sup:create_mserver(2).
{ok,<0.153.0>}
4> mserver_sup:create_mserver(3).
{ok,<0.155.0>}
5> observer:start().
ok