From 16fa8d7cc8c92f5ab879e4cf9c6c0bbb3567860f Mon Sep 17 00:00:00 2001
From: Gabe Black <gabeblack@google.com>
Date: Thu, 24 May 2018 01:37:55 -0700
Subject: systemc: Import tests from the Accellera systemc distribution.

Change-Id: Iad76b398949a55d768a34d027a2d8e3739953da6
Reviewed-on: https://gem5-review.googlesource.com/10845
Reviewed-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Maintainer: Gabe Black <gabeblack@google.com>
---
 .../misc/memory_explosion/test01/test01.cpp        | 113 +++++++++++++++++++++
 1 file changed, 113 insertions(+)
 create mode 100644 src/systemc/tests/systemc/misc/memory_explosion/test01/test01.cpp

(limited to 'src/systemc/tests/systemc/misc/memory_explosion/test01/test01.cpp')

diff --git a/src/systemc/tests/systemc/misc/memory_explosion/test01/test01.cpp b/src/systemc/tests/systemc/misc/memory_explosion/test01/test01.cpp
new file mode 100644
index 000000000..3ddfe6efa
--- /dev/null
+++ b/src/systemc/tests/systemc/misc/memory_explosion/test01/test01.cpp
@@ -0,0 +1,113 @@
+/*****************************************************************************
+
+  Licensed to Accellera Systems Initiative Inc. (Accellera) under one or
+  more contributor license agreements.  See the NOTICE file distributed
+  with this work for additional information regarding copyright ownership.
+  Accellera licenses this file to you under the Apache License, Version 2.0
+  (the "License"); you may not use this file except in compliance with the
+  License.  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+  implied.  See the License for the specific language governing
+  permissions and limitations under the License.
+
+ *****************************************************************************/
+
+/*****************************************************************************
+
+  test01.cpp -- 
+
+  Original Author: Martin Janssen, Synopsys, Inc., 2002-02-15
+
+ *****************************************************************************/
+
+/*****************************************************************************
+
+  MODIFICATION LOG - modifiers, enter your name, affiliation, date and
+  changes you are making here.
+
+      Name, Affiliation, Date:
+  Description of Modification:
+
+ *****************************************************************************/
+
+/*
+Martin,
+tis is a very simple test that I used to verify functionality and timing
+with 1.2.1 on NT and I can see how memory consumption grows linearly with
+time. When I ran my implementation I could see the program footprint of
+about 400K during the whole simulation.
+The test runs about 20 seconds and memory footprint grows to about 90MB. If
+you run it longer it starts swapping memory do the disk and goes very
+slowly. So I waited till it grew to 1GB and then killed it because all
+computer does at that point is swapping memory. I guess if you let it run
+long enough it would eventually die. I think this happens only with
+optimized libraries.
+*/
+
+//--------------------------------------------------------------------------
+
+#include <systemc.h>
+
+#define sc_ns SC_NS
+#define sc_ms SC_MS
+
+class A : public sc_module
+{
+  sc_event e1;
+
+  void f()
+  {
+    while(true)
+    {
+      e1.notify(sc_time(5,sc_ns));
+      wait(e1);
+
+      wait(2,sc_ns);
+    }
+  }
+  public:
+  sc_in_clk clk;
+  SC_CTOR(A) { SC_THREAD(f); sensitive<<clk;}
+};
+
+class B : public sc_module
+{
+  sc_event e2, e3;
+  void f()
+  {
+    while(true)
+    {
+      e2.notify(sc_time(1,sc_ns));
+      wait(e2);
+
+      e3.notify(sc_time(10,sc_ns));
+
+      wait(e3);
+    }
+  }
+  public:
+  sc_in_clk clk;
+  SC_CTOR(B) { SC_THREAD(f); sensitive<<clk;}
+};
+
+int sc_main(int argc, char* argv[])
+{
+  A a("a");
+  B b("b");
+
+ sc_time clk_time(10.0, sc_ns);
+ sc_clock clock("clock",clk_time);
+ a.clk(clock);
+ b.clk(clock);
+
+  sc_start(0, SC_NS);
+  sc_time sim_time(10.,sc_ms);
+  sc_start(sim_time);
+  return 0;
+}
+//--------------------------------------------------------------------------
-- 
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