changeset 399f35ed5cca in /z/repo/gem5
details: http://repo.gem5.org/gem5?cmd=changeset;node=399f35ed5cca
description:
mem: Use shared_ptr for Ruby Message classes
This patch transitions the Ruby Message and its derived classes from
the ad-hoc RefCountingPtr to the c++11 shared_ptr. There are no
changes in behaviour, and the code modifications are mainly replacing
"new" with "make_shared".
The cloning of derived messages is slightly changed as they previously
relied on overriding the base-class through covariant return types.
diffstat:
src/mem/ruby/slicc_interface/Message.hh | 8 ++++----
src/mem/ruby/slicc_interface/NetworkMessage.hh | 3 ++-
src/mem/ruby/slicc_interface/RubyRequest.hh | 3 ++-
src/mem/ruby/system/DMASequencer.cc | 8 ++++++--
src/mem/ruby/system/DMASequencer.hh | 1 +
src/mem/ruby/system/Sequencer.cc | 11 ++++++-----
src/mem/slicc/ast/EnqueueStatementAST.py | 4 ++--
src/mem/slicc/symbols/Type.py | 12 +++++++++++-
8 files changed, 34 insertions(+), 16 deletions(-)
diffs (169 lines):
diff -r 0433264984ce -r 399f35ed5cca src/mem/ruby/slicc_interface/Message.hh
--- a/src/mem/ruby/slicc_interface/Message.hh Thu Oct 16 05:49:48 2014 -0400
+++ b/src/mem/ruby/slicc_interface/Message.hh Thu Oct 16 05:49:49 2014 -0400
@@ -30,14 +30,14 @@
#define __MEM_RUBY_SLICC_INTERFACE_MESSAGE_HH__
#include <iostream>
+#include <memory>
-#include "base/refcnt.hh"
#include "mem/packet.hh"
class Message;
-typedef RefCountingPtr<Message> MsgPtr;
+typedef std::shared_ptr<Message> MsgPtr;
-class Message : public RefCounted
+class Message
{
public:
Message(Tick curTime)
@@ -54,7 +54,7 @@
virtual ~Message() { }
- virtual Message* clone() const = 0;
+ virtual MsgPtr clone() const = 0;
virtual void print(std::ostream& out) const = 0;
virtual void setIncomingLink(int) {}
virtual void setVnet(int) {}
diff -r 0433264984ce -r 399f35ed5cca
src/mem/ruby/slicc_interface/NetworkMessage.hh
--- a/src/mem/ruby/slicc_interface/NetworkMessage.hh Thu Oct 16 05:49:48
2014 -0400
+++ b/src/mem/ruby/slicc_interface/NetworkMessage.hh Thu Oct 16 05:49:49
2014 -0400
@@ -30,13 +30,14 @@
#define __MEM_RUBY_SLICC_INTERFACE_NETWORKMESSAGE_HH__
#include <iostream>
+#include <memory>
#include "mem/protocol/MessageSizeType.hh"
#include "mem/ruby/common/NetDest.hh"
#include "mem/ruby/slicc_interface/Message.hh"
class NetworkMessage;
-typedef RefCountingPtr<NetworkMessage> NetMsgPtr;
+typedef std::shared_ptr<NetworkMessage> NetMsgPtr;
class NetworkMessage : public Message
{
diff -r 0433264984ce -r 399f35ed5cca src/mem/ruby/slicc_interface/RubyRequest.hh
--- a/src/mem/ruby/slicc_interface/RubyRequest.hh Thu Oct 16 05:49:48
2014 -0400
+++ b/src/mem/ruby/slicc_interface/RubyRequest.hh Thu Oct 16 05:49:49
2014 -0400
@@ -71,7 +71,8 @@
}
RubyRequest(Tick curTime) : Message(curTime) {}
- RubyRequest* clone() const { return new RubyRequest(*this); }
+ MsgPtr clone() const
+ { return std::shared_ptr<Message>(new RubyRequest(*this)); }
const Address& getLineAddress() const { return m_LineAddress; }
const Address& getPhysicalAddress() const { return m_PhysicalAddress; }
diff -r 0433264984ce -r 399f35ed5cca src/mem/ruby/system/DMASequencer.cc
--- a/src/mem/ruby/system/DMASequencer.cc Thu Oct 16 05:49:48 2014 -0400
+++ b/src/mem/ruby/system/DMASequencer.cc Thu Oct 16 05:49:49 2014 -0400
@@ -26,6 +26,8 @@
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
+#include <memory>
+
#include "debug/RubyDma.hh"
#include "debug/RubyStats.hh"
#include "mem/protocol/SequencerMsg.hh"
@@ -69,7 +71,8 @@
active_request.bytes_issued = 0;
active_request.pkt = pkt;
- SequencerMsg *msg = new SequencerMsg(clockEdge());
+ std::shared_ptr<SequencerMsg> msg =
+ std::make_shared<SequencerMsg>(clockEdge());
msg->getPhysicalAddress() = Address(paddr);
msg->getLineAddress() = line_address(msg->getPhysicalAddress());
msg->getType() = write ? SequencerRequestType_ST : SequencerRequestType_LD;
@@ -107,7 +110,8 @@
return;
}
- SequencerMsg *msg = new SequencerMsg(clockEdge());
+ std::shared_ptr<SequencerMsg> msg =
+ std::make_shared<SequencerMsg>(clockEdge());
msg->getPhysicalAddress() = Address(active_request.start_paddr +
active_request.bytes_completed);
diff -r 0433264984ce -r 399f35ed5cca src/mem/ruby/system/DMASequencer.hh
--- a/src/mem/ruby/system/DMASequencer.hh Thu Oct 16 05:49:48 2014 -0400
+++ b/src/mem/ruby/system/DMASequencer.hh Thu Oct 16 05:49:49 2014 -0400
@@ -30,6 +30,7 @@
#define __MEM_RUBY_SYSTEM_DMASEQUENCER_HH__
#include <ostream>
+#include <memory>
#include "mem/protocol/DMASequencerRequestType.hh"
#include "mem/ruby/common/DataBlock.hh"
diff -r 0433264984ce -r 399f35ed5cca src/mem/ruby/system/Sequencer.cc
--- a/src/mem/ruby/system/Sequencer.cc Thu Oct 16 05:49:48 2014 -0400
+++ b/src/mem/ruby/system/Sequencer.cc Thu Oct 16 05:49:49 2014 -0400
@@ -679,11 +679,12 @@
pc = pkt->req->getPC();
}
- RubyRequest *msg = new RubyRequest(clockEdge(), pkt->getAddr(),
- pkt->getPtr<uint8_t>(true),
- pkt->getSize(), pc, secondary_type,
- RubyAccessMode_Supervisor, pkt,
- PrefetchBit_No, proc_id);
+ std::shared_ptr<RubyRequest> msg =
+ std::make_shared<RubyRequest>(clockEdge(), pkt->getAddr(),
+ pkt->getPtr<uint8_t>(true),
+ pkt->getSize(), pc, secondary_type,
+ RubyAccessMode_Supervisor, pkt,
+ PrefetchBit_No, proc_id);
DPRINTFR(ProtocolTrace, "%15s %3s %10s%20s %6s>%-6s %s %s\n",
curTick(), m_version, "Seq", "Begin", "", "",
diff -r 0433264984ce -r 399f35ed5cca src/mem/slicc/ast/EnqueueStatementAST.py
--- a/src/mem/slicc/ast/EnqueueStatementAST.py Thu Oct 16 05:49:48 2014 -0400
+++ b/src/mem/slicc/ast/EnqueueStatementAST.py Thu Oct 16 05:49:49 2014 -0400
@@ -54,8 +54,8 @@
self.symtab.newSymbol(v)
# Declare message
- code("${{msg_type.ident}} *out_msg = "\
- "new ${{msg_type.ident}}(clockEdge());")
+ code("std::shared_ptr<${{msg_type.ident}}> out_msg = "\
+ "std::make_shared<${{msg_type.ident}}>(clockEdge());")
# The other statements
t = self.statements.generate(code, None)
diff -r 0433264984ce -r 399f35ed5cca src/mem/slicc/symbols/Type.py
--- a/src/mem/slicc/symbols/Type.py Thu Oct 16 05:49:48 2014 -0400
+++ b/src/mem/slicc/symbols/Type.py Thu Oct 16 05:49:49 2014 -0400
@@ -283,7 +283,16 @@
code('}')
# create a clone member
- code('''
+ if self.isMessage:
+ code('''
+MsgPtr
+clone() const
+{
+ return std::shared_ptr<Message>(new ${{self.c_ident}}(*this));
+}
+''')
+ else:
+ code('''
${{self.c_ident}}*
clone() const
{
@@ -391,6 +400,7 @@
*/
#include <iostream>
+#include <memory>
#include "mem/protocol/${{self.c_ident}}.hh"
#include "mem/ruby/common/Global.hh"
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