Duvida Hibernate como configurar xml pra pegar Pool de Conexão do Servidor de Aplicação

<hibernate-configuration>
	<session-factory>

		<property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property>
		<property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
		<property name="hibernate.connection.url">jdbc:mysql://localhost/usu</property>
		<property name="hibernate.connection.username">root</property>
		<property name="hibernate.connection.password">xxxxx</property>

		<property name="hibernate.show_sql">true</property>
		<property name="hibernate.format_sql">true</property>

		<property name="hibernate.c3p0.min_size">5</property>
		<property name="hibernate.c3p0.max_size">20</property>
		<property name="hibernate.c3p0.timeout">180</property>
		<property name="hibernate.c3p0.idle_test_period">100</property>

		
		<mapping class="entidades.Aluno"/>
		<mapping class="entidades.Curso"/>
		<mapping class="entidades.Matricula"/>
		
	</session-factory>
</hibernate-configuration>