From 5a769bdde526fa83c317ad4feb7d9ac0351eeea9 Mon Sep 17 00:00:00 2001
From: Alan Conway <aconway@apache.org>
Date: Mon, 4 May 2009 18:38:18 +0000
Subject: LatenchTracker: a tool for measuring latencies.

Added measurement points to cluster code.


git-svn-id: https://svn.apache.org/repos/asf/qpid/trunk/qpid@771392 13f79535-47bb-0310-9956-ffa450edef68
---
 cpp/src/qpid/cluster/Cluster.cpp | 21 ++++++++++++++-------
 1 file changed, 14 insertions(+), 7 deletions(-)

(limited to 'cpp/src/qpid/cluster')

diff --git a/cpp/src/qpid/cluster/Cluster.cpp b/cpp/src/qpid/cluster/Cluster.cpp
index 221f12990e..09e053dc28 100644
--- a/cpp/src/qpid/cluster/Cluster.cpp
+++ b/cpp/src/qpid/cluster/Cluster.cpp
@@ -48,6 +48,7 @@
 #include "qpid/memory.h"
 #include "qpid/shared_ptr.h"
 #include "qpid/sys/Thread.h"
+#include "qpid/sys/LatencyTracker.h"
 
 #include <boost/bind.hpp>
 #include <boost/cast.hpp>
@@ -196,8 +197,8 @@ void Cluster::leave() {
     leave(l);
 }
 
-#define LEAVE_TRY(STMT) try { STMT; } \
-    catch (const std::exception& e) { \
+#define LEAVE_TRY(STMT) try { STMT; }                                   \
+    catch (const std::exception& e) {                                   \
         QPID_LOG(warning, *this << " error leaving cluster: " << e.what()); \
     } do {} while(0)
 
@@ -228,17 +229,20 @@ void Cluster::deliver(
 }
 
 void Cluster::deliverEvent(const Event& e) {
+    LATENCY_START(Event, "enqueue event", e.getData());
     deliverEventQueue.push(e);
 }
 
 void Cluster::deliverFrame(const EventFrame& e) {
+    LATENCY_START(EventFrame, "enqueue frame", e.frame.getBody());
     deliverFrameQueue.push(e);
 }
 
 // Handler for deliverEventQueue.
 // This thread decodes frames from events.
 void Cluster::deliveredEvent(const Event& e) {
-        QPID_LOG(trace, *this << " DLVR: " << e);
+    LATENCY_STAGE(Event, "dequeue event", e.getData());
+    QPID_LOG(trace, *this << " DLVR: " << e);
     if (e.isCluster()) {
         EventFrame ef(e, e.getFrame());
         // Stop the deliverEventQueue on update offers.
@@ -253,9 +257,10 @@ void Cluster::deliveredEvent(const Event& e) {
             deliverFrame(EventFrame(e, e.getFrame()));
         else
             decoder.decode(e, e.getData());
-}
+    }
     else // Discard connection events if discarding is set.
         QPID_LOG(trace, *this << " DROP: " << e);
+    LATENCY_END(Event, "processed event", e.getData());
 }
 
 void Cluster::flagError(Connection& connection, ErrorCheck::ErrorType type) {
@@ -266,11 +271,13 @@ void Cluster::flagError(Connection& connection, ErrorCheck::ErrorType type) {
 // Handler for deliverFrameQueue.
 // This thread executes the main logic.
 void Cluster::deliveredFrame(const EventFrame& e) {
+    LATENCY_STAGE(EventFrame, "dequeued frame", e.frame.getBody());
     Mutex::ScopedLock l(lock);
     // Process each frame through the error checker.
     error.delivered(e);
     while (error.canProcess())  // There is a frame ready to process.
         processFrame(error.getNext(), l);
+    LATENCY_END(EventFrame, "processed frame", e.frame.getBody());
 }
 
 void Cluster::processFrame(const EventFrame& e, Lock& l) {
@@ -543,7 +550,7 @@ Manageable::status_t Cluster::ManagementMethod (uint32_t methodId, Args& args, s
     Lock l(lock);
     QPID_LOG(debug, *this << " managementMethod [id=" << methodId << "]");
     switch (methodId) {
-    case _qmf::Cluster::METHOD_STOPCLUSTERNODE :
+      case _qmf::Cluster::METHOD_STOPCLUSTERNODE :
         {
             _qmf::ArgsClusterStopClusterNode& iargs = (_qmf::ArgsClusterStopClusterNode&) args;
             stringstream stream;
@@ -552,10 +559,10 @@ Manageable::status_t Cluster::ManagementMethod (uint32_t methodId, Args& args, s
                 stopClusterNode(l);
         }
         break;
-    case _qmf::Cluster::METHOD_STOPFULLCLUSTER :
+      case _qmf::Cluster::METHOD_STOPFULLCLUSTER :
         stopFullCluster(l);
         break;
-    default:
+      default:
         return Manageable::STATUS_UNKNOWN_METHOD;
     }
     return Manageable::STATUS_OK;
-- 
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