From daecb2b529e81c54fe4804ea35e74f4840b93511 Mon Sep 17 00:00:00 2001
From: Gabe Black <gabeblack@google.com>
Date: Fri, 14 Sep 2018 21:38:45 -0700
Subject: systemc: Check whether the simulation is running when creating
 sensitivities.

Change-Id: I499cde0d0eb45ba3287a8719174e1c794c1fb634
Reviewed-on: https://gem5-review.googlesource.com/c/12810
Reviewed-by: Gabe Black <gabeblack@google.com>
Maintainer: Gabe Black <gabeblack@google.com>
---
 src/systemc/core/sc_sensitive.cc                   | 25 ++++++++++++++++++++++
 .../kernel/sc_sensitive/test04/expected_returncode |  1 +
 2 files changed, 26 insertions(+)
 create mode 100644 src/systemc/tests/systemc/kernel/sc_sensitive/test04/expected_returncode

diff --git a/src/systemc/core/sc_sensitive.cc b/src/systemc/core/sc_sensitive.cc
index 9b8ae2de4..2accc93c1 100644
--- a/src/systemc/core/sc_sensitive.cc
+++ b/src/systemc/core/sc_sensitive.cc
@@ -33,16 +33,31 @@
 #include "systemc/ext/channel/sc_inout.hh"
 #include "systemc/ext/channel/sc_signal_in_if.hh"
 #include "systemc/ext/core/sc_interface.hh"
+#include "systemc/ext/core/sc_main.hh"
 #include "systemc/ext/core/sc_sensitive.hh"
+#include "systemc/ext/utils/sc_report_handler.hh"
 
 namespace sc_core
 {
 
+namespace
+{
+
+void
+checkIfRunning()
+{
+    if (sc_is_running())
+        SC_REPORT_ERROR("(E526) make sensitive failed", "simulation running");
+}
+
+} // anonymous namespace
+
 sc_sensitive::sc_sensitive() : currentProcess(nullptr) {}
 
 sc_sensitive &
 sc_sensitive::operator << (const sc_event &e)
 {
+    checkIfRunning();
     sc_gem5::newStaticSensitivityEvent(currentProcess, &e);
     return *this;
 }
@@ -50,6 +65,7 @@ sc_sensitive::operator << (const sc_event &e)
 sc_sensitive &
 sc_sensitive::operator << (const sc_interface &i)
 {
+    checkIfRunning();
     sc_gem5::newStaticSensitivityInterface(currentProcess, &i);
     return *this;
 }
@@ -57,6 +73,7 @@ sc_sensitive::operator << (const sc_interface &i)
 sc_sensitive &
 sc_sensitive::operator << (const sc_port_base &b)
 {
+    checkIfRunning();
     sc_gem5::newStaticSensitivityPort(currentProcess, &b);
     return *this;
 }
@@ -64,6 +81,7 @@ sc_sensitive::operator << (const sc_port_base &b)
 sc_sensitive &
 sc_sensitive::operator << (sc_event_finder &f)
 {
+    checkIfRunning();
     sc_gem5::newStaticSensitivityFinder(currentProcess, &f);
     return *this;
 }
@@ -80,6 +98,7 @@ void
 sc_sensitive::operator () (::sc_gem5::Process *p,
                            const sc_signal_in_if<bool> &i)
 {
+    checkIfRunning();
     sc_gem5::newStaticSensitivityEvent(p, &i.posedge_event());
 }
 
@@ -87,12 +106,14 @@ void
 sc_sensitive::operator () (::sc_gem5::Process *p,
                            const sc_signal_in_if<sc_dt::sc_logic> &i)
 {
+    checkIfRunning();
     sc_gem5::newStaticSensitivityEvent(p, &i.posedge_event());
 }
 
 void
 sc_sensitive::operator () (::sc_gem5::Process *p, const sc_in<bool> &port)
 {
+    checkIfRunning();
     sc_gem5::newStaticSensitivityFinder(p, &port.pos());
 }
 
@@ -100,12 +121,14 @@ void
 sc_sensitive::operator () (::sc_gem5::Process *p,
                            const sc_in<sc_dt::sc_logic> &port)
 {
+    checkIfRunning();
     sc_gem5::newStaticSensitivityFinder(p, &port.pos());
 }
 
 void
 sc_sensitive::operator () (::sc_gem5::Process *p, const sc_inout<bool> &port)
 {
+    checkIfRunning();
     sc_gem5::newStaticSensitivityFinder(p, &port.pos());
 }
 
@@ -113,12 +136,14 @@ void
 sc_sensitive::operator () (::sc_gem5::Process *p,
                            const sc_inout<sc_dt::sc_logic> &port)
 {
+    checkIfRunning();
     sc_gem5::newStaticSensitivityFinder(p, &port.pos());
 }
 
 void
 sc_sensitive::operator () (::sc_gem5::Process *p, sc_event_finder &f)
 {
+    checkIfRunning();
     sc_gem5::newStaticSensitivityFinder(p, &f);
 }
 
diff --git a/src/systemc/tests/systemc/kernel/sc_sensitive/test04/expected_returncode b/src/systemc/tests/systemc/kernel/sc_sensitive/test04/expected_returncode
new file mode 100644
index 000000000..d00491fd7
--- /dev/null
+++ b/src/systemc/tests/systemc/kernel/sc_sensitive/test04/expected_returncode
@@ -0,0 +1 @@
+1
-- 
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