1 files changed, 69 insertions, 0 deletions
diff --git a/util/systemc/systemc_within_gem5/systemc_simple_object/feeder.cc b/util/systemc/systemc_within_gem5/systemc_simple_object/feeder.cc
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index 000000000..599e1b1cf
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+++ b/util/systemc/systemc_within_gem5/systemc_simple_object/feeder.cc
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+/*
+ * Copyright 2018 Google, Inc.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met: redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer;
+ * redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution;
+ * neither the name of the copyright holders nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Authors: Gabe Black
+ */
+
+#include "params/Gem5_Feeder.hh"
+#include "sim/sim_exit.hh"
+#include "systemc_simple_object/feeder.hh"
+
+Feeder::Feeder(Gem5_FeederParams *params) :
+    SimObject(params), printer(params->printer), delay(params->delay),
+    strings(params->strings), index(0), event(this)
+{
+    // Bind the printer objects "input" port to our sc_buffer. This will let
+    // us feed it values. If some other object was responsible for the
+    // sc_buffer, we could interact with it directly and not have built it
+    // ourselves.
+    //
+    // Alternatively Printer could define a normal c++ method which we could
+    // call to feed it words without involving any systemc specific classes.
+    printer->input(buf);
+}
+
+void
+Feeder::startup()
+{
+    schedule(&event, curTick() + delay);
+}
+
+void
+Feeder::feed()
+{
+    if (index >= strings.size())
+        exitSimLoop("Printed all the words.");
+    else
+        buf.write(strings[index++].c_str());
+
+    schedule(&event, curTick() + delay);
+}
+
+Feeder *
+Gem5_FeederParams::create()
+{
+    return new Feeder(this);
+}