1 files changed, 148 insertions, 0 deletions
diff --git a/src/sim/sim_events.cc b/src/sim/sim_events.cc
new file mode 100644
index 000000000..c2bdca9df
--- /dev/null
+++ b/src/sim/sim_events.cc
@@ -0,0 +1,148 @@
+/*
+ * Copyright (c) 2002-2005 The Regents of The University of Michigan
+ * All rights reserved.
+ *
+ * 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.
+ */
+
+#include <string>
+
+#include "base/callback.hh"
+#include "base/hostinfo.hh"
+#include "sim/eventq.hh"
+#include "sim/param.hh"
+#include "sim/sim_events.hh"
+#include "sim/sim_exit.hh"
+#include "sim/startup.hh"
+#include "sim/stats.hh"
+
+using namespace std;
+
+//
+// handle termination event
+//
+void
+SimExitEvent::process()
+{
+    // This event does not autodelete because exitNow may be called,
+    // and the function will never be allowed to finish.
+    if (theQueue() == &mainEventQueue) {
+        string _cause = cause;
+        int _code = code;
+        delete this;
+        exitNow(_cause, _code);
+    } else {
+        new SimExitEvent(cause, code);
+        delete this;
+    }
+}
+
+
+const char *
+SimExitEvent::description()
+{
+    return "simulation termination";
+}
+
+//
+// constructor: automatically schedules at specified time
+//
+CountedExitEvent::CountedExitEvent(EventQueue *q, const std::string &_cause,
+                                   Tick _when, int &_downCounter)
+    : Event(q, Sim_Exit_Pri),
+      cause(_cause),
+      downCounter(_downCounter)
+{
+    // catch stupid mistakes
+    assert(downCounter > 0);
+
+    schedule(_when);
+}
+
+
+//
+// handle termination event
+//
+void
+CountedExitEvent::process()
+{
+    if (--downCounter == 0) {
+        new SimExitEvent(cause, 0);
+    }
+}
+
+
+const char *
+CountedExitEvent::description()
+{
+    return "counted exit";
+}
+
+#ifdef CHECK_SWAP_CYCLES
+new CheckSwapEvent(&mainEventQueue, CHECK_SWAP_CYCLES);
+#endif
+
+void
+CheckSwapEvent::process()
+{
+    /*  Check the amount of free swap space  */
+    long swap;
+
+    /*  returns free swap in KBytes  */
+    swap = procInfo("/proc/meminfo", "SwapFree:");
+
+    if (swap < 1000)
+        ccprintf(cerr, "\a\a\aWarning! Swap space is low (%d)\n", swap);
+
+    if (swap < 100) {
+        cerr << "\a\aAborting Simulation! Inadequate swap space!\n\n";
+        new SimExitEvent("Lack of swap space");
+    }
+
+    schedule(curTick + interval);
+}
+
+const char *
+CheckSwapEvent::description()
+{
+    return "check swap";
+}
+
+//
+// handle progress event: print message and reschedule
+//
+void
+ProgressEvent::process()
+{
+    DPRINTFN("ProgressEvent\n");
+    // reschedule for next interval
+    schedule(curTick + interval);
+}
+
+
+const char *
+ProgressEvent::description()
+{
+    return "progress message";
+}