From a715926f3a2dc33f605b119561ccac38322f1c7b Mon Sep 17 00:00:00 2001
From: Adam Dickmeiss <adam@indexdata.dk>
Date: Wed, 18 Apr 2007 12:06:59 +0000
Subject: [PATCH] Fixed bug #1064: Test test_thread_pool_observer hangs.

---
 src/test_thread_pool_observer.cpp |   12 ++++++++++--
 src/thread_pool_observer.cpp      |   12 +++++++++---
 2 files changed, 19 insertions(+), 5 deletions(-)

diff --git a/src/test_thread_pool_observer.cpp b/src/test_thread_pool_observer.cpp
index 6138759..c5810c2 100644
--- a/src/test_thread_pool_observer.cpp
+++ b/src/test_thread_pool_observer.cpp
@@ -1,4 +1,4 @@
-/* $Id: test_thread_pool_observer.cpp,v 1.12 2007-01-25 14:05:54 adam Exp $
+/* $Id: test_thread_pool_observer.cpp,v 1.13 2007-04-18 12:06:59 adam Exp $
    Copyright (c) 2005-2007, Index Data.
 
    See the LICENSE file for details
@@ -82,6 +82,14 @@ void My_Timer_Thread::socketNotify(int event)
     m->m_val = m_requests++;
     m->m_timer = this;
     m_t->put(m);
+#if 0
+    // prevent input queue from being filled up..
+    // bug #1064: Test test_thread_pool_observer hangs
+    // fortunately we don't need this hack. because put (ebove)
+    // will block itself if needed
+    if (m->m_val == 30)
+         m_obs->deleteObserver(this);
+#endif
 }
 
 BOOST_AUTO_UNIT_TEST( thread_pool_observer1 ) 
@@ -93,7 +101,7 @@ BOOST_AUTO_UNIT_TEST( thread_pool_observer1 )
     while (t.m_responses < 30 && mySocketManager.processEvent() > 0)
         ;
     BOOST_CHECK_EQUAL(t.m_responses, 30);
-    BOOST_CHECK(t.m_sum >= 435);
+    BOOST_CHECK(t.m_sum >= 435); // = 29*30/2
 }
 
 /*
diff --git a/src/thread_pool_observer.cpp b/src/thread_pool_observer.cpp
index ab72255..36cf783 100644
--- a/src/thread_pool_observer.cpp
+++ b/src/thread_pool_observer.cpp
@@ -1,4 +1,4 @@
-/* $Id: thread_pool_observer.cpp,v 1.19 2007-02-19 12:51:08 adam Exp $
+/* $Id: thread_pool_observer.cpp,v 1.20 2007-04-18 12:06:59 adam Exp $
    Copyright (c) 2005-2007, Index Data.
 
    See the LICENSE file for details
@@ -52,15 +52,18 @@ namespace metaproxy_1 {
         boost::thread_group m_thrds;
         boost::mutex m_mutex_input_data;
         boost::condition m_cond_input_data;
+        boost::condition m_cond_input_full;
         boost::mutex m_mutex_output_data;
         std::deque<IThreadPoolMsg *> m_input;
         std::deque<IThreadPoolMsg *> m_output;
         bool m_stop_flag;
-        int m_no_threads;
+        unsigned m_no_threads;
     };
+    const unsigned int queue_size_per_thread = 64;
 }
 
 
+
 using namespace yazpp_1;
 using namespace metaproxy_1;
 
@@ -141,7 +144,8 @@ void ThreadPoolSocketObserver::run(void *p)
                 break;
             
             in = m_p->m_input.front();
-            m_p->m_input.pop_front();
+            m_p->m_input.pop_front(); 
+            m_p->m_cond_input_full.notify_all();
         }
         IThreadPoolMsg *out = in->handle();
         {
@@ -159,6 +163,8 @@ void ThreadPoolSocketObserver::run(void *p)
 void ThreadPoolSocketObserver::put(IThreadPoolMsg *m)
 {
     boost::mutex::scoped_lock input_lock(m_p->m_mutex_input_data);
+    while (m_p->m_input.size() >= m_p->m_no_threads * queue_size_per_thread)
+        m_p->m_cond_input_full.wait(input_lock);
     m_p->m_input.push_back(m);
     m_p->m_cond_input_data.notify_one();
 }
-- 
1.7.10.4