1 files changed, 262 insertions, 240 deletions

diff --git a/src/mem/ruby/buffers/MessageBuffer.cc b/src/mem/ruby/buffers/MessageBuffer.cc
index d157e2a94..83bb34dad 100644
--- a/src/mem/ruby/buffers/MessageBuffer.cc
+++ b/src/mem/ruby/buffers/MessageBuffer.cc
@@ -1,4 +1,3 @@
-
 /*
  * Copyright (c) 1999-2008 Mark D. Hill and David A. Wood
  * All rights reserved.
@@ -27,318 +26,341 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-/*
- * $Id$
- */
-
 #include "mem/ruby/buffers/MessageBuffer.hh"
 #include "mem/ruby/system/System.hh"
 
 MessageBuffer::MessageBuffer(const string &name)
 {
-  m_msg_counter = 0;
-  m_consumer_ptr = NULL;
-  m_ordering_set = false;
-  m_strict_fifo = true;
-  m_size = 0;
-  m_max_size = -1;
-  m_last_arrival_time = 0;
-  m_randomization = true;
-  m_size_last_time_size_checked = 0;
-  m_time_last_time_size_checked = 0;
-  m_time_last_time_enqueue = 0;
-  m_time_last_time_pop = 0;
-  m_size_at_cycle_start = 0;
-  m_msgs_this_cycle = 0;
-  m_not_avail_count = 0;
-  m_priority_rank = 0;
-  m_name = name;
+    m_msg_counter = 0;
+    m_consumer_ptr = NULL;
+    m_ordering_set = false;
+    m_strict_fifo = true;
+    m_size = 0;
+    m_max_size = -1;
+    m_last_arrival_time = 0;
+    m_randomization = true;
+    m_size_last_time_size_checked = 0;
+    m_time_last_time_size_checked = 0;
+    m_time_last_time_enqueue = 0;
+    m_time_last_time_pop = 0;
+    m_size_at_cycle_start = 0;
+    m_msgs_this_cycle = 0;
+    m_not_avail_count = 0;
+    m_priority_rank = 0;
+    m_name = name;
 }
 
-int MessageBuffer::getSize()
+int
+MessageBuffer::getSize()
 {
-  if(m_time_last_time_size_checked == g_eventQueue_ptr->getTime()){
-    return m_size_last_time_size_checked;
-  } else {
-    m_time_last_time_size_checked = g_eventQueue_ptr->getTime();
-    m_size_last_time_size_checked = m_size;
-    return m_size;
-  }
+    if (m_time_last_time_size_checked == g_eventQueue_ptr->getTime()) {
+        return m_size_last_time_size_checked;
+    } else {
+        m_time_last_time_size_checked = g_eventQueue_ptr->getTime();
+        m_size_last_time_size_checked = m_size;
+        return m_size;
+    }
 }
 
-bool MessageBuffer::areNSlotsAvailable(int n)
+bool
+MessageBuffer::areNSlotsAvailable(int n)
 {
 
-  // fast path when message buffers have infinite size
-  if(m_max_size == -1) {
-    return true;
-  }
-
-  // determine my correct size for the current cycle
-  // pop operations shouldn't effect the network's visible size until next cycle,
-  // but enqueue operations effect the visible size immediately
-  int current_size = max(m_size_at_cycle_start, m_size);
-  if (m_time_last_time_pop < g_eventQueue_ptr->getTime()) {  // no pops this cycle - m_size is correct
-    current_size = m_size;
-  } else {
-    if (m_time_last_time_enqueue < g_eventQueue_ptr->getTime()) {  // no enqueues this cycle - m_size_at_cycle_start is correct
-      current_size = m_size_at_cycle_start;
-    } else {  // both pops and enqueues occured this cycle - add new enqueued msgs to m_size_at_cycle_start
-      current_size = m_size_at_cycle_start+m_msgs_this_cycle;
+    // fast path when message buffers have infinite size
+    if (m_max_size == -1) {
+        return true;
+    }
+
+    // determine my correct size for the current cycle
+    // pop operations shouldn't effect the network's visible size
+    // until next cycle, but enqueue operations effect the visible
+    // size immediately
+    int current_size = max(m_size_at_cycle_start, m_size);
+    if (m_time_last_time_pop < g_eventQueue_ptr->getTime()) {
+        // no pops this cycle - m_size is correct
+        current_size = m_size;
+    } else {
+        if (m_time_last_time_enqueue < g_eventQueue_ptr->getTime()) {
+            // no enqueues this cycle - m_size_at_cycle_start is correct
+            current_size = m_size_at_cycle_start;
+        } else {
+            // both pops and enqueues occured this cycle - add new
+            // enqueued msgs to m_size_at_cycle_start
+            current_size = m_size_at_cycle_start+m_msgs_this_cycle;
+        }
+    }
+
+    // now compare the new size with our max size
+    if (current_size + n <= m_max_size) {
+        return true;
+    } else {
+        DEBUG_MSG(QUEUE_COMP, MedPrio, n);
+        DEBUG_MSG(QUEUE_COMP, MedPrio, current_size);
+        DEBUG_MSG(QUEUE_COMP, MedPrio, m_size);
+        DEBUG_MSG(QUEUE_COMP, MedPrio, m_max_size);
+        m_not_avail_count++;
+        return false;
     }
-  }
-
-  // now compare the new size with our max size
-  if(current_size+n <= m_max_size){
-    return true;
-  } else {
-    DEBUG_MSG(QUEUE_COMP,MedPrio,n);
-    DEBUG_MSG(QUEUE_COMP,MedPrio,current_size);
-    DEBUG_MSG(QUEUE_COMP,MedPrio,m_size);
-    DEBUG_MSG(QUEUE_COMP,MedPrio,m_max_size);
-    m_not_avail_count++;
-    return false;
-  }
 }
 
-const MsgPtr MessageBuffer::getMsgPtrCopy() const
+const MsgPtr
+MessageBuffer::getMsgPtrCopy() const
 {
-  assert(isReady());
+    assert(isReady());
 
-  MsgPtr temp_msg;
-  temp_msg = *(m_prio_heap.peekMin().m_msgptr.ref());
-  assert(temp_msg.ref() != NULL);
-  return temp_msg;
+    MsgPtr temp_msg;
+    temp_msg = *(m_prio_heap.peekMin().m_msgptr.ref());
+    assert(temp_msg.ref() != NULL);
+    return temp_msg;
 }
 
-const Message* MessageBuffer::peekAtHeadOfQueue() const
+const Message*
+MessageBuffer::peekAtHeadOfQueue() const
 {
-  const Message* msg_ptr;
-  DEBUG_NEWLINE(QUEUE_COMP,MedPrio);
+    const Message* msg_ptr;
+    DEBUG_NEWLINE(QUEUE_COMP, MedPrio);
 
-  DEBUG_MSG(QUEUE_COMP,MedPrio,"Peeking at head of queue " + m_name + " time: "
-            + int_to_string(g_eventQueue_ptr->getTime()) + ".");
-  assert(isReady());
+    DEBUG_MSG(QUEUE_COMP, MedPrio,
+              "Peeking at head of queue " + m_name + " time: "
+              + int_to_string(g_eventQueue_ptr->getTime()) + ".");
+    assert(isReady());
 
-  msg_ptr = m_prio_heap.peekMin().m_msgptr.ref();
-  assert(msg_ptr != NULL);
+    msg_ptr = m_prio_heap.peekMin().m_msgptr.ref();
+    assert(msg_ptr != NULL);
 
-  DEBUG_EXPR(QUEUE_COMP,MedPrio,*msg_ptr);
-  DEBUG_NEWLINE(QUEUE_COMP,MedPrio);
-  return msg_ptr;
+    DEBUG_EXPR(QUEUE_COMP, MedPrio, *msg_ptr);
+    DEBUG_NEWLINE(QUEUE_COMP, MedPrio);
+    return msg_ptr;
 }
 
 // FIXME - move me somewhere else
-int random_time()
+int
+random_time()
 {
-  int time = 1;
-  time += random() & 0x3;  // [0...3]
-  if ((random() & 0x7) == 0) {  // 1 in 8 chance
-    time += 100 + (random() % 0xf); // 100 + [1...15]
-  }
-  return time;
+    int time = 1;
+    time += random() & 0x3;  // [0...3]
+    if ((random() & 0x7) == 0) {  // 1 in 8 chance
+        time += 100 + (random() % 0xf); // 100 + [1...15]
+    }
+    return time;
 }
 
-void MessageBuffer::enqueue(const MsgPtr& message, Time delta)
+void
+MessageBuffer::enqueue(const MsgPtr& message, Time delta)
 {
-  DEBUG_NEWLINE(QUEUE_COMP,HighPrio);
-  DEBUG_MSG(QUEUE_COMP,HighPrio,"enqueue " + m_name + " time: "
-            + int_to_string(g_eventQueue_ptr->getTime()) + ".");
-  DEBUG_EXPR(QUEUE_COMP,MedPrio,message);
-  DEBUG_NEWLINE(QUEUE_COMP,HighPrio);
-
-  m_msg_counter++;
-  m_size++;
-
-  // record current time incase we have a pop that also adjusts my size
-  if (m_time_last_time_enqueue < g_eventQueue_ptr->getTime()) {
-    m_msgs_this_cycle = 0;  // first msg this cycle
-    m_time_last_time_enqueue = g_eventQueue_ptr->getTime();
-  }
-  m_msgs_this_cycle++;
-
-  //  ASSERT(m_max_size == -1 || m_size <= m_max_size + 1);
-  // the plus one is a kluge because of a SLICC issue
-
-  if (!m_ordering_set) {
-    //    WARN_EXPR(*this);
-    WARN_EXPR(m_name);
-    ERROR_MSG("Ordering property of this queue has not been set");
-  }
-
-  // Calculate the arrival time of the message, that is, the first
-  // cycle the message can be dequeued.
-//  printf ("delta %i \n", delta);
-  assert(delta>0);
-  Time current_time = g_eventQueue_ptr->getTime();
-  Time arrival_time = 0;
-  if (!RubySystem::getRandomization() || (m_randomization == false)) {
-    // No randomization
-    arrival_time = current_time + delta;
-
-  } else {
-    // Randomization - ignore delta
-    if (m_strict_fifo) {
-      if (m_last_arrival_time < current_time) {
-        m_last_arrival_time = current_time;
-      }
-      arrival_time = m_last_arrival_time + random_time();
-    } else {
-      arrival_time = current_time + random_time();
+    DEBUG_NEWLINE(QUEUE_COMP, HighPrio);
+    DEBUG_MSG(QUEUE_COMP, HighPrio, "enqueue " + m_name + " time: "
+              + int_to_string(g_eventQueue_ptr->getTime()) + ".");
+    DEBUG_EXPR(QUEUE_COMP, MedPrio, message);
+    DEBUG_NEWLINE(QUEUE_COMP, HighPrio);
+
+    m_msg_counter++;
+    m_size++;
+
+    // record current time incase we have a pop that also adjusts my size
+    if (m_time_last_time_enqueue < g_eventQueue_ptr->getTime()) {
+        m_msgs_this_cycle = 0;  // first msg this cycle
+        m_time_last_time_enqueue = g_eventQueue_ptr->getTime();
     }
-  }
+    m_msgs_this_cycle++;
+
+    //  ASSERT(m_max_size == -1 || m_size <= m_max_size + 1);
+    // the plus one is a kluge because of a SLICC issue
 
-  // Check the arrival time
-  assert(arrival_time > current_time);
-  if (m_strict_fifo) {
-    if (arrival_time >= m_last_arrival_time) {
+    if (!m_ordering_set) {
+        //    WARN_EXPR(*this);
+        WARN_EXPR(m_name);
+        ERROR_MSG("Ordering property of this queue has not been set");
+    }
 
+    // Calculate the arrival time of the message, that is, the first
+    // cycle the message can be dequeued.
+    //printf ("delta %i \n", delta);
+    assert(delta>0);
+    Time current_time = g_eventQueue_ptr->getTime();
+    Time arrival_time = 0;
+    if (!RubySystem::getRandomization() || (m_randomization == false)) {
+        // No randomization
+        arrival_time = current_time + delta;
+    } else {
+        // Randomization - ignore delta
+        if (m_strict_fifo) {
+            if (m_last_arrival_time < current_time) {
+                m_last_arrival_time = current_time;
+            }
+            arrival_time = m_last_arrival_time + random_time();
+        } else {
+            arrival_time = current_time + random_time();
+        }
+    }
+
+    // Check the arrival time
+    assert(arrival_time > current_time);
+    if (m_strict_fifo) {
+        if (arrival_time < m_last_arrival_time) {
+            WARN_EXPR(*this);
+            WARN_EXPR(m_name);
+            WARN_EXPR(current_time);
+            WARN_EXPR(delta);
+            WARN_EXPR(arrival_time);
+            WARN_EXPR(m_last_arrival_time);
+            ERROR_MSG("FIFO ordering violated");
+        }
+    }
+    m_last_arrival_time = arrival_time;
+
+    // compute the delay cycles and set enqueue time
+    Message* msg_ptr = message.mod_ref();
+    assert(msg_ptr != NULL);
+
+    assert(g_eventQueue_ptr->getTime() >= msg_ptr->getLastEnqueueTime() &&
+           "ensure we aren't dequeued early");
+
+    msg_ptr->setDelayedCycles(g_eventQueue_ptr->getTime() -
+                              msg_ptr->getLastEnqueueTime() +
+                              msg_ptr->getDelayedCycles());
+    msg_ptr->setLastEnqueueTime(arrival_time);
+
+    // Insert the message into the priority heap
+    MessageBufferNode thisNode(arrival_time, m_msg_counter, message);
+    m_prio_heap.insert(thisNode);
+
+    DEBUG_NEWLINE(QUEUE_COMP, HighPrio);
+    DEBUG_MSG(QUEUE_COMP, HighPrio, "enqueue " + m_name
+              + " with arrival_time " + int_to_string(arrival_time)
+              + " cur_time: " + int_to_string(g_eventQueue_ptr->getTime())
+              + ".");
+    DEBUG_EXPR(QUEUE_COMP, MedPrio, message);
+    DEBUG_NEWLINE(QUEUE_COMP, HighPrio);
+
+    // Schedule the wakeup
+    if (m_consumer_ptr != NULL) {
+        g_eventQueue_ptr->scheduleEventAbsolute(m_consumer_ptr, arrival_time);
     } else {
-      WARN_EXPR(*this);
-      WARN_EXPR(m_name);
-      WARN_EXPR(current_time);
-      WARN_EXPR(delta);
-      WARN_EXPR(arrival_time);
-      WARN_EXPR(m_last_arrival_time);
-      ERROR_MSG("FIFO ordering violated");
+        WARN_EXPR(*this);
+        WARN_EXPR(m_name);
+        ERROR_MSG("No consumer");
     }
-  }
-  m_last_arrival_time = arrival_time;
-
-  // compute the delay cycles and set enqueue time
-  Message* msg_ptr = NULL;
-  msg_ptr = message.mod_ref();
-  assert(msg_ptr != NULL);
-  assert(g_eventQueue_ptr->getTime() >= msg_ptr->getLastEnqueueTime());  // ensure we aren't dequeued early
-  msg_ptr->setDelayedCycles((g_eventQueue_ptr->getTime() - msg_ptr->getLastEnqueueTime())+msg_ptr->getDelayedCycles());
-  msg_ptr->setLastEnqueueTime(arrival_time);
-
-  // Insert the message into the priority heap
-  MessageBufferNode thisNode(arrival_time, m_msg_counter, message);
-  m_prio_heap.insert(thisNode);
-
-  DEBUG_NEWLINE(QUEUE_COMP,HighPrio);
-  DEBUG_MSG(QUEUE_COMP,HighPrio,"enqueue " + m_name
-            + " with arrival_time " + int_to_string(arrival_time)
-            + " cur_time: " + int_to_string(g_eventQueue_ptr->getTime()) + ".");
-  DEBUG_EXPR(QUEUE_COMP,MedPrio,message);
-  DEBUG_NEWLINE(QUEUE_COMP,HighPrio);
-
-  // Schedule the wakeup
-  if (m_consumer_ptr != NULL) {
-    g_eventQueue_ptr->scheduleEventAbsolute(m_consumer_ptr, arrival_time);
-  } else {
-    WARN_EXPR(*this);
-    WARN_EXPR(m_name);
-    ERROR_MSG("No consumer");
-  }
 }
 
-int MessageBuffer::dequeue_getDelayCycles(MsgPtr& message)
+int
+MessageBuffer::dequeue_getDelayCycles(MsgPtr& message)
 {
-  int delay_cycles = -1;  // null value
+    int delay_cycles = -1;  // null value
 
-  dequeue(message);
+    dequeue(message);
 
-  // get the delay cycles
-  delay_cycles = setAndReturnDelayCycles(message);
+    // get the delay cycles
+    delay_cycles = setAndReturnDelayCycles(message);
 
-  assert(delay_cycles >= 0);
-  return delay_cycles;
+    assert(delay_cycles >= 0);
+    return delay_cycles;
 }
 
-void MessageBuffer::dequeue(MsgPtr& message)
+void
+MessageBuffer::dequeue(MsgPtr& message)
 {
-  DEBUG_MSG(QUEUE_COMP,MedPrio,"dequeue from " + m_name);
-  message = m_prio_heap.peekMin().m_msgptr;
+    DEBUG_MSG(QUEUE_COMP, MedPrio, "dequeue from " + m_name);
+    message = m_prio_heap.peekMin().m_msgptr;
 
-  pop();
-  DEBUG_EXPR(QUEUE_COMP,MedPrio,message);
+    pop();
+    DEBUG_EXPR(QUEUE_COMP, MedPrio, message);
 }
 
-int MessageBuffer::dequeue_getDelayCycles()
+int
+MessageBuffer::dequeue_getDelayCycles()
 {
-  int delay_cycles = -1;  // null value
+    int delay_cycles = -1;  // null value
 
-  // get MsgPtr of the message about to be dequeued
-  MsgPtr message = m_prio_heap.peekMin().m_msgptr;
+    // get MsgPtr of the message about to be dequeued
+    MsgPtr message = m_prio_heap.peekMin().m_msgptr;
 
-  // get the delay cycles
-  delay_cycles = setAndReturnDelayCycles(message);
+    // get the delay cycles
+    delay_cycles = setAndReturnDelayCycles(message);
 
-  dequeue();
+    dequeue();
 
-  assert(delay_cycles >= 0);
-  return delay_cycles;
+    assert(delay_cycles >= 0);
+    return delay_cycles;
 }
 
-void MessageBuffer::pop()
+void
+MessageBuffer::pop()
 {
-  DEBUG_MSG(QUEUE_COMP,MedPrio,"pop from " + m_name);
-  assert(isReady());
-  m_prio_heap.extractMin();
-  // record previous size and time so the current buffer size isn't adjusted until next cycle
-  if (m_time_last_time_pop < g_eventQueue_ptr->getTime()) {
-    m_size_at_cycle_start = m_size;
-    m_time_last_time_pop = g_eventQueue_ptr->getTime();
-  }
-  m_size--;
+    DEBUG_MSG(QUEUE_COMP, MedPrio, "pop from " + m_name);
+    assert(isReady());
+    m_prio_heap.extractMin();
+    // record previous size and time so the current buffer size isn't
+    // adjusted until next cycle
+    if (m_time_last_time_pop < g_eventQueue_ptr->getTime()) {
+        m_size_at_cycle_start = m_size;
+        m_time_last_time_pop = g_eventQueue_ptr->getTime();
+    }
+    m_size--;
 }
 
-void MessageBuffer::clear()
+void
+MessageBuffer::clear()
 {
-  while(m_prio_heap.size() > 0){
-    m_prio_heap.extractMin();
-  }
+    while(m_prio_heap.size() > 0){
+        m_prio_heap.extractMin();
+    }
 
-  ASSERT(m_prio_heap.size() == 0);
+    ASSERT(m_prio_heap.size() == 0);
 
-  m_msg_counter = 0;
-  m_size = 0;
-  m_time_last_time_enqueue = 0;
-  m_time_last_time_pop = 0;
-  m_size_at_cycle_start = 0;
-  m_msgs_this_cycle = 0;
+    m_msg_counter = 0;
+    m_size = 0;
+    m_time_last_time_enqueue = 0;
+    m_time_last_time_pop = 0;
+    m_size_at_cycle_start = 0;
+    m_msgs_this_cycle = 0;
 }
 
-void MessageBuffer::recycle()
+void
+MessageBuffer::recycle()
 {
-  DEBUG_MSG(QUEUE_COMP,MedPrio,"recycling " + m_name);
-  assert(isReady());
-  MessageBufferNode node = m_prio_heap.extractMin();
-  node.m_time = g_eventQueue_ptr->getTime() + m_recycle_latency;
-  m_prio_heap.insert(node);
-  g_eventQueue_ptr->scheduleEventAbsolute(m_consumer_ptr, g_eventQueue_ptr->getTime() + m_recycle_latency);
+    DEBUG_MSG(QUEUE_COMP, MedPrio, "recycling " + m_name);
+    assert(isReady());
+    MessageBufferNode node = m_prio_heap.extractMin();
+    node.m_time = g_eventQueue_ptr->getTime() + m_recycle_latency;
+    m_prio_heap.insert(node);
+    g_eventQueue_ptr->scheduleEventAbsolute(m_consumer_ptr,
+        g_eventQueue_ptr->getTime() + m_recycle_latency);
 }
 
-int MessageBuffer::setAndReturnDelayCycles(MsgPtr& message)
+int
+MessageBuffer::setAndReturnDelayCycles(MsgPtr& message)
 {
-  int delay_cycles = -1;  // null value
+    int delay_cycles = -1;  // null value
 
-  // get the delay cycles of the message at the top of the queue
-  Message* msg_ptr = message.ref();
+    // get the delay cycles of the message at the top of the queue
+    Message* msg_ptr = message.ref();
 
-  // this function should only be called on dequeue
-  // ensure the msg hasn't been enqueued
-  assert(msg_ptr->getLastEnqueueTime() <= g_eventQueue_ptr->getTime());
-  msg_ptr->setDelayedCycles((g_eventQueue_ptr->getTime() - msg_ptr->getLastEnqueueTime())+msg_ptr->getDelayedCycles());
-  delay_cycles = msg_ptr->getDelayedCycles();
+    // this function should only be called on dequeue
+    // ensure the msg hasn't been enqueued
+    assert(msg_ptr->getLastEnqueueTime() <= g_eventQueue_ptr->getTime());
+    msg_ptr->setDelayedCycles(g_eventQueue_ptr->getTime() -
+                              msg_ptr->getLastEnqueueTime() +
+                              msg_ptr->getDelayedCycles());
+    delay_cycles = msg_ptr->getDelayedCycles();
 
-  assert(delay_cycles >= 0);
-  return delay_cycles;
+    assert(delay_cycles >= 0);
+    return delay_cycles;
 }
 
-void MessageBuffer::print(ostream& out) const
+void
+MessageBuffer::print(ostream& out) const
 {
-  out << "[MessageBuffer: ";
-  if (m_consumer_ptr != NULL) {
-    out << " consumer-yes ";
-  }
-  out << m_prio_heap << "] " << m_name << endl;
+    out << "[MessageBuffer: ";
+    if (m_consumer_ptr != NULL) {
+        out << " consumer-yes ";
+    }
+    out << m_prio_heap << "] " << m_name << endl;
 }
 
-void MessageBuffer::printStats(ostream& out)
+void
+MessageBuffer::printStats(ostream& out)
 {
-  out << "MessageBuffer: " << m_name << " stats - msgs:" << m_msg_counter << " full:" << m_not_avail_count << endl;
+    out << "MessageBuffer: " << m_name << " stats - msgs:" << m_msg_counter
+        << " full:" << m_not_avail_count << endl;
 }
-