Ruby: Remove RubyEventQueue

This patch removes RubyEventQueue. Consumer objects now rely on RubySystem
or themselves for scheduling events.

6 files changed, 97 insertions, 29 deletions

diff --git a/src/mem/ruby/common/Consumer.cc b/src/mem/ruby/common/Consumer.cc
new file mode 100644
index 000000000..a81396217
--- /dev/null
+++ b/src/mem/ruby/common/Consumer.cc
@@ -0,0 +1,63 @@
+/*
+ * Copyright (c) 2012 Mark D. Hill and David A. Wood
+ * 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 "mem/ruby/common/Consumer.hh"
+#include "mem/ruby/common/Global.hh"
+#include "mem/ruby/system/System.hh"
+
+void
+Consumer::scheduleEvent(Time timeDelta)
+{
+    scheduleEvent(g_system_ptr, timeDelta);
+}
+
+void
+Consumer::scheduleEvent(EventManager *em, Time timeDelta)
+{
+    scheduleEventAbsolute(em, timeDelta + g_system_ptr->getTime());
+}
+
+void
+Consumer::scheduleEventAbsolute(Time timeAbs)
+{
+    scheduleEventAbsolute(g_system_ptr, timeAbs);
+}
+
+void
+Consumer::scheduleEventAbsolute(EventManager *em, Time timeAbs)
+{
+    Tick evt_time = timeAbs * g_system_ptr->getClock();
+    if (!alreadyScheduled(evt_time)) {
+        // This wakeup is not redundant
+        ConsumerEvent *evt = new ConsumerEvent(this);
+        assert(timeAbs > g_system_ptr->getTime());
+
+        em->schedule(evt, evt_time);
+        insertScheduledWakeupTime(evt_time);
+    }
+}
diff --git a/src/mem/ruby/common/Consumer.hh b/src/mem/ruby/common/Consumer.hh
index a119abb39..6a67bde39 100644
--- a/src/mem/ruby/common/Consumer.hh
+++ b/src/mem/ruby/common/Consumer.hh
@@ -38,10 +38,8 @@
 #include <iostream>
 #include <set>
 
-#include "mem/ruby/common/Global.hh"
-#include "mem/ruby/eventqueue/RubyEventQueue.hh"
-
-class MessageBuffer;
+#include "mem/ruby/common/TypeDefines.hh"
+#include "sim/eventq.hh"
 
 class Consumer
 {
@@ -55,55 +53,68 @@ class Consumer
     ~Consumer()
     { }
 
-    void
-    triggerWakeup(RubyEventQueue *eventQueue)
-    {
-        Time time = eventQueue->getTime();
-        if (m_last_wakeup != time) {
-            wakeup();
-            m_last_wakeup = time;
-        }
-    }
-
     virtual void wakeup() = 0;
     virtual void print(std::ostream& out) const = 0;
     virtual void storeEventInfo(int info) {}
 
-    const Time&
+    const Tick&
     getLastScheduledWakeup() const
     {
         return m_last_scheduled_wakeup;
     }
 
     void
-    setLastScheduledWakeup(const Time& time)
+    setLastScheduledWakeup(const Tick& time)
     {
         m_last_scheduled_wakeup = time;
     }
 
     bool
-    alreadyScheduled(Time time)
+    alreadyScheduled(Tick time)
     {
         return m_scheduled_wakeups.find(time) != m_scheduled_wakeups.end();
     }
 
     void
-    insertScheduledWakeupTime(Time time)
+    insertScheduledWakeupTime(Tick time)
     {
         m_scheduled_wakeups.insert(time);
     }
 
     void
-    removeScheduledWakeupTime(Time time)
+    removeScheduledWakeupTime(Tick time)
     {
         assert(alreadyScheduled(time));
         m_scheduled_wakeups.erase(time);
     }
 
+    void scheduleEvent(EventManager* em, Time timeDelta);
+    void scheduleEventAbsolute(EventManager* em, Time timeAbs);
+    void scheduleEvent(Time timeDelta);
+    void scheduleEventAbsolute(Time timeAbs);
+
   private:
-    Time m_last_scheduled_wakeup;
-    std::set<Time> m_scheduled_wakeups;
-    Time m_last_wakeup;
+    Tick m_last_scheduled_wakeup;
+    std::set<Tick> m_scheduled_wakeups;
+    Tick m_last_wakeup;
+
+    class ConsumerEvent : public Event
+    {
+      public:
+          ConsumerEvent(Consumer* _consumer)
+              : Event(Default_Pri, AutoDelete), m_consumer_ptr(_consumer)
+          {
+          }
+
+          void process()
+          {
+              m_consumer_ptr->wakeup();
+              m_consumer_ptr->removeScheduledWakeupTime(when());
+          }
+
+      private:
+          Consumer* m_consumer_ptr;
+    };
 };
 
 inline std::ostream&
diff --git a/src/mem/ruby/common/Global.cc b/src/mem/ruby/common/Global.cc
index e771de7ae..a2ed4e6ae 100644
--- a/src/mem/ruby/common/Global.cc
+++ b/src/mem/ruby/common/Global.cc
@@ -28,6 +28,4 @@
 
 #include "mem/ruby/common/Global.hh"
 
-RubyEventQueue* g_eventQueue_ptr = 0;
 RubySystem* g_system_ptr = 0;
-
diff --git a/src/mem/ruby/common/Global.hh b/src/mem/ruby/common/Global.hh
index cae7cb16b..f76a1a26b 100644
--- a/src/mem/ruby/common/Global.hh
+++ b/src/mem/ruby/common/Global.hh
@@ -31,9 +31,6 @@
 
 #include "base/str.hh"
 
-class RubyEventQueue;
-extern RubyEventQueue* g_eventQueue_ptr;
-
 class RubySystem;
 extern RubySystem* g_system_ptr;
 
diff --git a/src/mem/ruby/common/SConscript b/src/mem/ruby/common/SConscript
index aab35a09c..c7e774b47 100644
--- a/src/mem/ruby/common/SConscript
+++ b/src/mem/ruby/common/SConscript
@@ -34,6 +34,7 @@ if env['PROTOCOL'] == 'None':
     Return()
 
 Source('Address.cc')
+Source('Consumer.cc')
 Source('DataBlock.cc')
 Source('Global.cc')
 Source('Histogram.cc')
diff --git a/src/mem/ruby/common/TypeDefines.hh b/src/mem/ruby/common/TypeDefines.hh
index 233c9146a..a7b8a6101 100644
--- a/src/mem/ruby/common/TypeDefines.hh
+++ b/src/mem/ruby/common/TypeDefines.hh
@@ -35,8 +35,6 @@ typedef unsigned char uint8;
 typedef unsigned int uint32;
 typedef unsigned long long uint64;
 
-typedef signed char int8;
-typedef int int32;
 typedef long long int64;
 
 typedef long long integer_t;