[gem5-dev] Change in gem5/gem5[master]: systemc: If no sc_module_name was used, throw an error.

[Gabe Black (Gerrit)]

Gabe Black has uploaded this change for review. (  
https://gem5-review.googlesource.com/c/public/gem5/+/12251

Change subject: systemc: If no sc_module_name was used, throw an error.
......................................................................

systemc: If no sc_module_name was used, throw an error.

This is tested by the regression tests. Also make sure the handshake
which sets up instances of sc_module is cleaned up if we bail partway
through for some reason, for instance if an intermediate class throws
an exception as part of its constructor.

Change-Id: I89afe5f76832cc132aa2bb8f19916dea64546784
---
M src/systemc/core/module.cc
M src/systemc/core/module.hh
M src/systemc/core/sc_module.cc
3 files changed, 22 insertions(+), 2 deletions(-)



diff --git a/src/systemc/core/module.cc b/src/systemc/core/module.cc
index b13b50d..0c118e0 100644
--- a/src/systemc/core/module.cc
+++ b/src/systemc/core/module.cc
@@ -32,6 +32,7 @@
 #include <cassert>

 #include "base/logging.hh"
+#include "systemc/ext/utils/sc_report_handler.hh"

 namespace sc_gem5
 {
@@ -52,7 +53,14 @@
     _new_module = this;
 }

-Module::~Module() { allModules.remove(this); }
+Module::~Module()
+{
+    if (_new_module == this) {
+        // Aborted module construction?
+        _new_module = nullptr;
+    }
+    allModules.remove(this);
+}

 void
 Module::finish(Object *this_obj)
@@ -86,6 +94,17 @@
 }

 Module *
+newModuleChecked()
+{
+    if (!_new_module) {
+        SC_REPORT_ERROR("(E533) module name stack is empty: "
+                "did you forget to add a sc_module_name parameter to "
+                "your module constructor?", nullptr);
+    }
+    return _new_module;
+}
+
+Module *
 newModule()
 {
     return _new_module;
diff --git a/src/systemc/core/module.hh b/src/systemc/core/module.hh
index e988b96..e276dad 100644
--- a/src/systemc/core/module.hh
+++ b/src/systemc/core/module.hh
@@ -116,6 +116,7 @@
 };

 Module *currentModule();
+Module *newModuleChecked();
 Module *newModule();

 void callbackModule(Module *m);
diff --git a/src/systemc/core/sc_module.cc b/src/systemc/core/sc_module.cc
index 016b9ed..c515aaf 100644
--- a/src/systemc/core/sc_module.cc
+++ b/src/systemc/core/sc_module.cc
@@ -168,7 +168,7 @@
 }

 sc_module::sc_module() :
-    sc_object(sc_gem5::newModule()->name()),
+    sc_object(sc_gem5::newModuleChecked()->name()),
     _gem5_module(sc_gem5::currentModule())
 {}


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Gerrit-Project: public/gem5
Gerrit-Branch: master
Gerrit-Change-Id: I89afe5f76832cc132aa2bb8f19916dea64546784
Gerrit-Change-Number: 12251
Gerrit-PatchSet: 1
Gerrit-Owner: Gabe Black <gabebl...@google.com>
Gerrit-MessageType: newchange
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