Latency measurements, compiled out of production code.

git-svn-id: https://svn.apache.org/repos/asf/qpid/trunk/qpid@736135 13f79535-47bb-0310-9956-ffa450edef68

1 files changed, 25 insertions, 8 deletions

diff --git a/cpp/src/qpid/cluster/Event.cpp b/cpp/src/qpid/cluster/Event.cpp
index 8d4429a8ed..59a7241715 100644
--- a/cpp/src/qpid/cluster/Event.cpp
+++ b/cpp/src/qpid/cluster/Event.cpp
@@ -35,16 +35,21 @@ using framing::Buffer;
 const size_t EventHeader::HEADER_SIZE =
     sizeof(uint8_t) +  // type
     sizeof(uint64_t) + // connection pointer only, CPG provides member ID.
-    sizeof(uint32_t);  // payload size
+    sizeof(uint32_t)  // payload size
+#ifdef QPID_LATENCY_METRIC
+    + sizeof(int64_t)           // timestamp
+#endif
+    ;
 
 EventHeader::EventHeader(EventType t, const ConnectionId& c,  size_t s)
     : type(t), connectionId(c), size(s) {}
 
+
+Event::Event() {}
+
 Event::Event(EventType t, const ConnectionId& c,  size_t s)
     : EventHeader(t,c,s), store(RefCountedBuffer::create(s+HEADER_SIZE))
-{
-    encodeHeader();
-}
+{}
 
 void EventHeader::decode(const MemberId& m, framing::Buffer& buf) {
     if (buf.available() <= HEADER_SIZE)
@@ -54,14 +59,17 @@ void EventHeader::decode(const MemberId& m, framing::Buffer& buf) {
         throw ClusterLeaveException("Invalid multicast event type");
     connectionId = ConnectionId(m, reinterpret_cast<Connection*>(buf.getLongLong()));
     size = buf.getLong();
+#ifdef QPID_LATENCY_METRIC
+    latency_metric_timestamp = buf.getLongLong();
+#endif
 }
 
 Event Event::decodeCopy(const MemberId& m, framing::Buffer& buf) {
-    EventHeader h;
-    h.decode(m, buf);           // Header
-    Event e(h.getType(), h.getConnectionId(), h.getSize());
+    Event e;
+    e.decode(m, buf);           // Header
     if (buf.available() < e.size)
         throw ClusterLeaveException("Not enough data for multicast event");
+    e.store = RefCountedBuffer::create(e.size + HEADER_SIZE);
     memcpy(e.getData(), buf.getPointer() + buf.getPosition(), e.size);
     return e;
 }
@@ -73,11 +81,20 @@ Event Event::control(const framing::AMQBody& body, const ConnectionId& cid) {
     f.encode(buf);
     return e;
 }
-    
+
+iovec Event::toIovec() {
+    encodeHeader();
+    iovec iov = { const_cast<char*>(getStore()), getStoreSize() };
+    return iov;
+}
+
 void EventHeader::encode(Buffer& b) const {
     b.putOctet(type);
     b.putLongLong(reinterpret_cast<uint64_t>(connectionId.getPointer()));
     b.putLong(size);
+#ifdef QPID_LATENCY_METRIC
+    b.putLongLong(latency_metric_timestamp);
+#endif
 }
 
 // Encode my header in my buffer.