mem-ruby: Add a ruby namespace

Encapsulate all ruby-related files in a ruby namespace.

Change-Id: If642c9751ecefc35b45c5dd69d85e67813cc5224
Issued-on: https://gem5.atlassian.net/browse/GEM5-984
Signed-off-by: Daniel R. Carvalho <odanrc@yahoo.com.br>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/47307
Reviewed-by: Bobby R. Bruce <bbruce@ucdavis.edu>
Maintainer: Bobby R. Bruce <bbruce@ucdavis.edu>
Tested-by: kokoro <noreply+kokoro@google.com>

src/mem/slicc/symbols/StateMachine.py

@@ -244,7 +244,7 @@ from m5.objects.Controller import RubyController
 class $py_ident(RubyController):
     type = '$py_ident'
     cxx_header = 'mem/ruby/protocol/${c_ident}.hh'
-    cxx_class = 'gem5::$py_ident'
+    cxx_class = 'gem5::ruby::$py_ident'
 ''')
         code.indent()
         for param in self.config_parameters:
@@ -301,6 +301,9 @@ class $py_ident(RubyController):
 namespace gem5
 {
 
+namespace ruby
+{
+
 extern std::stringstream ${ident}_transitionComment;
 
 class $c_ident : public AbstractController
@@ -458,6 +461,7 @@ void unset_tbe(${{self.TBEType.c_ident}}*& m_tbe_ptr);
         code('''
 };
 
+} // namespace ruby
 } // namespace gem5
 
 #endif // __${ident}_CONTROLLER_H__
@@ -540,6 +544,9 @@ void unset_tbe(${{self.TBEType.c_ident}}*& m_tbe_ptr);
 namespace gem5
 {
 
+namespace ruby
+{
+
 int $c_ident::m_num_controllers = 0;
 std::vector<statistics::Vector *>  $c_ident::eventVec;
 std::vector<std::vector<statistics::Vector *> >  $c_ident::transVec;
@@ -1211,6 +1218,7 @@ $c_ident::functionalReadBuffers(PacketPtr& pkt, WriteMask &mask)
     return read;
 }
 
+} // namespace ruby
 } // namespace gem5
 ''')
 
@@ -1266,6 +1274,9 @@ $c_ident::functionalReadBuffers(PacketPtr& pkt, WriteMask &mask)
 namespace gem5
 {
 
+namespace ruby
+{
+
 void
 ${ident}_Controller::wakeup()
 {
@@ -1341,6 +1352,7 @@ ${ident}_Controller::wakeup()
     }
 }
 
+} // namespace ruby
 } // namespace gem5
 ''')
 
@@ -1375,6 +1387,9 @@ ${ident}_Controller::wakeup()
 namespace gem5
 {
 
+namespace ruby
+{
+
 TransitionResult
 ${ident}_Controller::doTransition(${ident}_Event event,
 ''')
@@ -1603,6 +1618,7 @@ if (!checkResourceAvailable(%s_RequestType_%s, addr)) {
     return TransitionResult_Valid;
 }
 
+} // namespace ruby
 } // namespace gem5
 ''')
         code.write(path, "%s_Transitions.cc" % self.ident)