Gabe Black has uploaded this change for review. (
https://gem5-review.googlesource.com/c/public/gem5/+/12447
Change subject: systemc: Raise an error when SC_METHOD, etc. is used after
starting.
......................................................................
systemc: Raise an error when SC_METHOD, etc. is used after starting.
Those mechanisms for creating processes are only allowed before the
end of elaboration, or in other words before sc_start is called.
Technically the check in Accellera's implementation won't trigger if
the simulation is stopped, and we immitate that behavior.
Change-Id: I9b8b5bd32f876781b6e0d5c0ee0e09de19bdabc1
---
M src/systemc/channel/sc_clock.cc
M src/systemc/core/sc_module.cc
M src/systemc/ext/core/sc_module.hh
3 files changed, 37 insertions(+), 8 deletions(-)
diff --git a/src/systemc/channel/sc_clock.cc
b/src/systemc/channel/sc_clock.cc
index 6736e57..7cdd1c1 100644
--- a/src/systemc/channel/sc_clock.cc
+++ b/src/systemc/channel/sc_clock.cc
@@ -32,6 +32,7 @@
#include "sim/core.hh"
#include "sim/eventq.hh"
#include "systemc/core/kernel.hh"
+#include "systemc/core/process_types.hh"
#include "systemc/core/sched_event.hh"
#include "systemc/core/scheduler.hh"
#include "systemc/ext/channel/sc_clock.hh"
@@ -60,7 +61,8 @@
{
_name += (to ? ".up_tick" : ".down_tick");
_procName = _name + ".p";
- p = newMethodProcess(_procName.c_str(), &funcWrapper);
+ p = new Method(_procName.c_str(), &funcWrapper);
+ scheduler.reg(p);
scheduler.dontInitialize(p);
}
diff --git a/src/systemc/core/sc_module.cc b/src/systemc/core/sc_module.cc
index bbb9993..44e442d 100644
--- a/src/systemc/core/sc_module.cc
+++ b/src/systemc/core/sc_module.cc
@@ -28,6 +28,7 @@
*/
#include <memory>
+#include <string>
#include <vector>
#include "base/logging.hh"
@@ -36,6 +37,7 @@
#include "systemc/core/process_types.hh"
#include "systemc/ext/core/sc_module.hh"
#include "systemc/ext/core/sc_module_name.hh"
+#include "systemc/ext/utils/sc_report_handler.hh"
namespace sc_gem5
{
@@ -43,7 +45,14 @@
Process *
newMethodProcess(const char *name, ProcessFuncWrapper *func)
{
- Process *p = new Method(name, func);
+ Method *p = new Method(name, func);
+ if (::sc_core::sc_is_running()) {
+ std::string name = p->name();
+ delete p;
+ SC_REPORT_ERROR("(E541) call to SC_METHOD in sc_module while "
+ "simulation running", name.c_str());
+ return nullptr;
+ }
scheduler.reg(p);
return p;
}
@@ -51,7 +60,14 @@
Process *
newThreadProcess(const char *name, ProcessFuncWrapper *func)
{
- Process *p = new Thread(name, func);
+ Thread *p = new Thread(name, func);
+ if (::sc_core::sc_is_running()) {
+ std::string name = p->name();
+ delete p;
+ SC_REPORT_ERROR("(E542) call to SC_THREAD in sc_module while "
+ "simulation running", name.c_str());
+ return nullptr;
+ }
scheduler.reg(p);
return p;
}
@@ -59,7 +75,14 @@
Process *
newCThreadProcess(const char *name, ProcessFuncWrapper *func)
{
- Process *p = new CThread(name, func);
+ CThread *p = new CThread(name, func);
+ if (::sc_core::sc_is_running()) {
+ std::string name = p->name();
+ delete p;
+ SC_REPORT_ERROR("(E543) call to SC_CTHREAD in sc_module while "
+ "simulation running", name.c_str());
+ return nullptr;
+ }
scheduler.reg(p);
p->dontInitialize();
return p;
diff --git a/src/systemc/ext/core/sc_module.hh
b/src/systemc/ext/core/sc_module.hh
index 539d275..0e5e679 100644
--- a/src/systemc/ext/core/sc_module.hh
+++ b/src/systemc/ext/core/sc_module.hh
@@ -289,7 +289,8 @@
#name, new ::sc_gem5::ProcessMemberFuncWrapper< \
SC_CURRENT_USER_MODULE>(this, \
&SC_CURRENT_USER_MODULE::name)); \
- this->sensitive << p; \
+ if (p) \
+ this->sensitive << p; \
}
#define SC_THREAD(name) \
{ \
@@ -298,7 +299,8 @@
#name, new ::sc_gem5::ProcessMemberFuncWrapper< \
SC_CURRENT_USER_MODULE>(this, \
&SC_CURRENT_USER_MODULE::name)); \
- this->sensitive << p; \
+ if (p) \
+ this->sensitive << p; \
}
#define SC_CTHREAD(name, clk) \
{ \
@@ -307,8 +309,10 @@
#name, new ::sc_gem5::ProcessMemberFuncWrapper< \
SC_CURRENT_USER_MODULE>(this, \
&SC_CURRENT_USER_MODULE::name)); \
- this->sensitive << p; \
- this->sensitive << clk; \
+ if (p) { \
+ this->sensitive << p; \
+ this->sensitive << clk; \
+ } \
}
// Nonstandard
--
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Gerrit-Project: public/gem5
Gerrit-Branch: master
Gerrit-Change-Id: I9b8b5bd32f876781b6e0d5c0ee0e09de19bdabc1
Gerrit-Change-Number: 12447
Gerrit-PatchSet: 1
Gerrit-Owner: Gabe Black <[email protected]>
Gerrit-MessageType: newchange
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