cpu: Clean up some style issues in pc_event.(hh|cc).

The record_t typedef isn't all that helpful, and is also not consistent
with gem5 style. The map_t style is more useful but is also not
compliant. This change eliminates the first typedef and replaces the
second with a type called Map.

There are some other small style fixups added in as well, like making
the member variable pc_map pcMap.

Change-Id: I8ffea529004fd6d5b42fdc60250804e2e4987e88
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/21781
Reviewed-by: Bobby R. Bruce <bbruce@ucdavis.edu>
Maintainer: Gabe Black <gabeblack@google.com>
Tested-by: kokoro <noreply+kokoro@google.com>

src/cpu/pc_event.cc

@@ -57,17 +57,15 @@ PCEventQueue::remove(PCEvent *event)
     int removed = 0;
     range_t range = equal_range(event);
     iterator i = range.first;
-    while (i != range.second &&
-           i != pc_map.end()) {
+    while (i != range.second && i != pcMap.end()) {
         if (*i == event) {
             DPRINTF(PCEvent, "PC based event removed at %#x: %s\n",
                     event->pc(), event->descr());
-            i = pc_map.erase(i);
+            i = pcMap.erase(i);
             ++removed;
         } else {
             i++;
         }
-
     }
 
     return removed > 0;
@@ -76,8 +74,8 @@ PCEventQueue::remove(PCEvent *event)
 bool
 PCEventQueue::schedule(PCEvent *event)
 {
-    pc_map.push_back(event);
-    sort(pc_map.begin(), pc_map.end(), MapCompare());
+    pcMap.push_back(event);
+    sort(pcMap.begin(), pcMap.end(), MapCompare());
 
     DPRINTF(PCEvent, "PC based event scheduled for %#x: %s\n",
             event->pc(), event->descr());
@@ -114,8 +112,8 @@ PCEventQueue::doService(ThreadContext *tc)
 void
 PCEventQueue::dump() const
 {
-    const_iterator i = pc_map.begin();
-    const_iterator e = pc_map.end();
+    const_iterator i = pcMap.begin();
+    const_iterator e = pcMap.end();
 
     for (; i != e; ++i)
         cprintf("%d: event at %#x: %s\n", curTick(), (*i)->pc(),
@@ -125,7 +123,7 @@ PCEventQueue::dump() const
 PCEventQueue::range_t
 PCEventQueue::equal_range(Addr pc)
 {
-    return std::equal_range(pc_map.begin(), pc_map.end(), pc, MapCompare());
+    return std::equal_range(pcMap.begin(), pcMap.end(), pc, MapCompare());
 }
 
 BreakPCEvent::BreakPCEvent(PCEventQueue *q, const std::string &desc, Addr addr,

src/cpu/pc_event.hh

@@ -66,31 +66,36 @@ class PCEvent
 class PCEventQueue
 {
   protected:
-    typedef PCEvent * record_t;
     class MapCompare {
       public:
-        bool operator()(const record_t &l, const record_t &r) const {
+        bool
+        operator()(PCEvent * const &l, PCEvent * const &r) const
+        {
             return l->pc() < r->pc();
         }
-        bool operator()(const record_t &l, Addr pc) const {
+        bool
+        operator()(PCEvent * const &l, Addr pc) const
+        {
             return l->pc() < pc;
         }
-        bool operator()(Addr pc, const record_t &r) const {
+        bool
+        operator()(Addr pc, PCEvent * const &r) const
+        {
             return pc < r->pc();
         }
     };
-    typedef std::vector<record_t> map_t;
+    typedef std::vector<PCEvent *> Map;
 
   public:
-    typedef map_t::iterator iterator;
-    typedef map_t::const_iterator const_iterator;
+    typedef Map::iterator iterator;
+    typedef Map::const_iterator const_iterator;
 
   protected:
     typedef std::pair<iterator, iterator> range_t;
     typedef std::pair<const_iterator, const_iterator> const_range_t;
 
   protected:
-    map_t pc_map;
+    Map pcMap;
 
     bool doService(ThreadContext *tc);
 
@@ -102,7 +107,7 @@ class PCEventQueue
     bool schedule(PCEvent *event);
     bool service(ThreadContext *tc)
     {
-        if (pc_map.empty())
+        if (pcMap.empty())
             return false;
 
         return doService(tc);