From b33a63b36c659a894143382d0a61efe6a598fcc6 Mon Sep 17 00:00:00 2001
From: Gordon Sim <gsim@apache.org>
Date: Thu, 6 Sep 2007 20:27:33 +0000
Subject: Implementation of execution.result on the client side

git-svn-id: https://svn.apache.org/repos/asf/incubator/qpid/trunk/qpid@573359 13f79535-47bb-0310-9956-ffa450edef68
---
 cpp/src/qpid/client/CompletionTracker.cpp | 74 +++++++++++++++++++++++++++----
 1 file changed, 65 insertions(+), 9 deletions(-)

(limited to 'cpp/src/qpid/client/CompletionTracker.cpp')

diff --git a/cpp/src/qpid/client/CompletionTracker.cpp b/cpp/src/qpid/client/CompletionTracker.cpp
index 996971dbd2..46a7384ac2 100644
--- a/cpp/src/qpid/client/CompletionTracker.cpp
+++ b/cpp/src/qpid/client/CompletionTracker.cpp
@@ -20,45 +20,101 @@
  */
 
 #include "CompletionTracker.h"
+#include <algorithm>
 
 using qpid::client::CompletionTracker;
 using namespace qpid::framing;
 using namespace boost;
 
+namespace 
+{
+const std::string empty;
+}
+
 CompletionTracker::CompletionTracker() {}
 CompletionTracker::CompletionTracker(const SequenceNumber& m) : mark(m) {}
 
+void CompletionTracker::close()
+{   
+    sys::Mutex::ScopedLock l(lock);
+    while (!listeners.empty()) {
+        Record r(listeners.front());
+        {
+            sys::Mutex::ScopedUnlock u(lock);
+            r.completed();
+        }
+        listeners.pop_front();
+    }
+}
 
 void CompletionTracker::completed(const SequenceNumber& _mark)
 {   
     sys::Mutex::ScopedLock l(lock);
     mark = _mark;
-    while (!listeners.empty() && !(listeners.front().first > mark)) {
-        Listener f(listeners.front().second);
+    while (!listeners.empty() && !(listeners.front().id > mark)) {
+        Record r(listeners.front());
         {
             sys::Mutex::ScopedUnlock u(lock);
-            f();
+            r.completed();
         }
-        listeners.pop();
+        listeners.pop_front();
+    }
+}
+
+void CompletionTracker::received(const SequenceNumber& id, const std::string& result)
+{
+    sys::Mutex::ScopedLock l(lock);
+    Listeners::iterator i = seek(id);
+    if (i != listeners.end() && i->id == id) {
+        i->received(result);
+        listeners.erase(i);
     }
 }
 
-void CompletionTracker::listen(const SequenceNumber& point, Listener listener)
+void CompletionTracker::listenForCompletion(const SequenceNumber& point, CompletionListener listener)
 {
-    if (!add(point, listener)) {
+    if (!add(Record(point, listener))) {
         listener();
     }
 }
 
-bool CompletionTracker::add(const SequenceNumber& point, Listener listener)
+void CompletionTracker::listenForResult(const SequenceNumber& point, ResultListener listener)
+{
+    if (!add(Record(point, listener))) {
+        listener(empty);
+    }
+}
+
+bool CompletionTracker::add(const Record& record)
 {
     sys::Mutex::ScopedLock l(lock);
-    if (point < mark) {
+    if (record.id < mark) {
         return false;
     } else {
-        listeners.push(make_pair(point, listener));
+        //insert at the correct position
+        Listeners::iterator i = seek(record.id);
+        if (i == listeners.end()) i = listeners.begin();
+        listeners.insert(i, record);
+
         return true;
     }
 }
 
+CompletionTracker::Listeners::iterator CompletionTracker::seek(const framing::SequenceNumber& point)
+{
+    Listeners::iterator i = listeners.begin(); 
+    while (i != listeners.end() && i->id < point) i++;
+    return i;
+}
+
 
+void CompletionTracker::Record::completed() 
+{ 
+    if (f)     f(); 
+    else if(g) g(empty);//won't get a result if command is now complete
+}
+
+void CompletionTracker::Record::received(const std::string& result) 
+{ 
+    if (g) g(result);
+}
-- 
cgit v1.2.1