Port: Make getAddrRanges const

This patch makes getAddrRanges const throughout the code base. There
is no reason why it should not be, and making it const prevents adding
any unintentional side-effects.

src/mem/bridge.cc

@@ -443,7 +443,7 @@ Bridge::BridgeMasterPort::checkFunctional(PacketPtr pkt)
 }
 
 AddrRangeList
-Bridge::BridgeSlavePort::getAddrRanges()
+Bridge::BridgeSlavePort::getAddrRanges() const
 {
     return ranges;
 }

src/mem/bridge.hh

@@ -276,7 +276,7 @@ class Bridge : public MemObject
 
         /** When receiving a address range request the peer port,
             pass it to the bridge. */
-        virtual AddrRangeList getAddrRanges();
+        virtual AddrRangeList getAddrRanges() const;
     };
 
 

src/mem/bus.cc

@@ -269,7 +269,7 @@ BaseBus::findPort(Addr addr)
         return dest_id;
 
     // Check normal port ranges
-    PortIter i = portMap.find(RangeSize(addr,1));
+    PortMapConstIter i = portMap.find(RangeSize(addr,1));
     if (i != portMap.end()) {
         dest_id = i->second;
         updatePortCache(dest_id, i->first.start, i->first.end);
@@ -278,8 +278,8 @@ BaseBus::findPort(Addr addr)
 
     // Check if this matches the default range
     if (useDefaultRange) {
-        AddrRangeIter a_end = defaultRange.end();
-        for (AddrRangeIter i = defaultRange.begin(); i != a_end; i++) {
+        AddrRangeConstIter a_end = defaultRange.end();
+        for (AddrRangeConstIter i = defaultRange.begin(); i != a_end; i++) {
             if (*i == addr) {
                 DPRINTF(BusAddrRanges, "  found addr %#llx on default\n",
                         addr);
@@ -332,7 +332,7 @@ BaseBus::recvRangeChange(PortID master_port_id)
         MasterPort *port = masterPorts[master_port_id];
 
         // Clean out any previously existent ids
-        for (PortIter portIter = portMap.begin();
+        for (PortMapIter portIter = portMap.begin();
              portIter != portMap.end(); ) {
             if (portIter->second == master_port_id)
                 portMap.erase(portIter++);
@@ -367,22 +367,22 @@ BaseBus::recvRangeChange(PortID master_port_id)
 }
 
 AddrRangeList
-BaseBus::getAddrRanges()
+BaseBus::getAddrRanges() const
 {
     AddrRangeList ranges;
 
     DPRINTF(BusAddrRanges, "received address range request, returning:\n");
 
-    for (AddrRangeIter dflt_iter = defaultRange.begin();
+    for (AddrRangeConstIter dflt_iter = defaultRange.begin();
          dflt_iter != defaultRange.end(); dflt_iter++) {
         ranges.push_back(*dflt_iter);
         DPRINTF(BusAddrRanges, "  -- Dflt: %#llx : %#llx\n",dflt_iter->start,
                 dflt_iter->end);
     }
-    for (PortIter portIter = portMap.begin();
+    for (PortMapConstIter portIter = portMap.begin();
          portIter != portMap.end(); portIter++) {
         bool subset = false;
-        for (AddrRangeIter dflt_iter = defaultRange.begin();
+        for (AddrRangeConstIter dflt_iter = defaultRange.begin();
              dflt_iter != defaultRange.end(); dflt_iter++) {
             if ((portIter->first.start < dflt_iter->start &&
                 portIter->first.end >= dflt_iter->start) ||

src/mem/bus.hh

@@ -85,7 +85,8 @@ class BaseBus : public MemObject
 
     Event * drainEvent;
 
-    typedef range_map<Addr, PortID>::iterator PortIter;
+    typedef range_map<Addr, PortID>::iterator PortMapIter;
+    typedef range_map<Addr, PortID>::const_iterator PortMapConstIter;
     range_map<Addr, PortID> portMap;
 
     AddrRangeList defaultRange;
@@ -187,7 +188,7 @@ class BaseBus : public MemObject
      *
      * @return a list of non-overlapping address ranges
      */
-    AddrRangeList getAddrRanges();
+    AddrRangeList getAddrRanges() const;
 
     /** Calculate the timing parameters for the packet.  Updates the
      * firstWordTime and finishTime fields of the packet object.

src/mem/cache/cache.hh

@@ -101,7 +101,7 @@ class Cache : public BaseCache
         virtual unsigned deviceBlockSize() const
         { return cache->getBlockSize(); }
 
-        virtual AddrRangeList getAddrRanges();
+        virtual AddrRangeList getAddrRanges() const;
 
       public:
 

src/mem/cache/cache_impl.hh

@@ -1588,7 +1588,7 @@ Cache<TagStore>::unserialize(Checkpoint *cp, const std::string &section)
 
 template<class TagStore>
 AddrRangeList
-Cache<TagStore>::CpuSidePort::getAddrRanges()
+Cache<TagStore>::CpuSidePort::getAddrRanges() const
 {
     return cache->getAddrRanges();
 }

src/mem/coherent_bus.hh

@@ -124,7 +124,7 @@ class CoherentBus : public BaseBus
         /**
          * Return the union of all adress ranges seen by this bus.
          */
-        virtual AddrRangeList getAddrRanges()
+        virtual AddrRangeList getAddrRanges() const
         { return bus.getAddrRanges(); }
 
         /**

src/mem/comm_monitor.cc

@@ -345,7 +345,7 @@ CommMonitor::deviceBlockSizeSlave()
 }
 
 AddrRangeList
-CommMonitor::getAddrRanges()
+CommMonitor::getAddrRanges() const
 {
     // get the address ranges of the connected slave port
     return masterPort.getAddrRanges();

src/mem/comm_monitor.hh

@@ -230,7 +230,7 @@ class CommMonitor : public MemObject
             return mon.deviceBlockSizeSlave();
         }
 
-        AddrRangeList getAddrRanges()
+        AddrRangeList getAddrRanges() const
         {
             return mon.getAddrRanges();
         }
@@ -269,7 +269,7 @@ class CommMonitor : public MemObject
 
     unsigned deviceBlockSizeSlave();
 
-    AddrRangeList getAddrRanges();
+    AddrRangeList getAddrRanges() const;
 
     bool isSnooping() const;
 

src/mem/noncoherent_bus.hh

@@ -120,7 +120,7 @@ class NoncoherentBus : public BaseBus
         /**
          * Return the union of all adress ranges seen by this bus.
          */
-        virtual AddrRangeList getAddrRanges()
+        virtual AddrRangeList getAddrRanges() const
         { return bus.getAddrRanges(); }
 
         /**

src/mem/port.hh

@@ -64,6 +64,7 @@
 
 typedef std::list<Range<Addr> > AddrRangeList;
 typedef std::list<Range<Addr> >::iterator AddrRangeIter;
+typedef std::list<Range<Addr> >::const_iterator AddrRangeConstIter;
 
 class MemObject;
 
@@ -379,7 +380,7 @@ class SlavePort : public Port
      *
      * @return a list of ranges responded to
      */
-    virtual AddrRangeList getAddrRanges() = 0;
+    virtual AddrRangeList getAddrRanges() const = 0;
 
   protected:
 

src/mem/ruby/system/RubyPort.cc

@@ -669,7 +669,7 @@ RubyPort::PioPort::sendNextCycle(PacketPtr pkt)
 }
 
 AddrRangeList
-RubyPort::M5Port::getAddrRanges()
+RubyPort::M5Port::getAddrRanges() const
 {
     // at the moment the assumption is that the master does not care
     AddrRangeList ranges;

src/mem/ruby/system/RubyPort.hh

@@ -86,7 +86,7 @@ class RubyPort : public MemObject
         virtual bool recvTimingReq(PacketPtr pkt);
         virtual Tick recvAtomic(PacketPtr pkt);
         virtual void recvFunctional(PacketPtr pkt);
-        virtual AddrRangeList getAddrRanges();
+        virtual AddrRangeList getAddrRanges() const;
 
       private:
         bool isPhysMemAddress(Addr addr);

src/mem/simple_mem.cc

@@ -132,7 +132,7 @@ SimpleMemory::MemoryPort::MemoryPort(const std::string& _name,
 { }
 
 AddrRangeList
-SimpleMemory::MemoryPort::getAddrRanges()
+SimpleMemory::MemoryPort::getAddrRanges() const
 {
     AddrRangeList ranges;
     ranges.push_back(memory.getAddrRange());

src/mem/simple_mem.hh

@@ -77,7 +77,7 @@ class SimpleMemory : public AbstractMemory
 
         virtual void recvFunctional(PacketPtr pkt);
 
-        virtual AddrRangeList getAddrRanges();
+        virtual AddrRangeList getAddrRanges() const;
 
     };