Replace non-cross-platform pthread_yield() with Boost's yield implementation.

CollectAgent/Makefile

@@ -4,8 +4,8 @@ include ../config.mk
 CXXFLAGS =	-O0 -g -Wall -fmessage-length=0 -I$(DCDBDEPLOYPATH)/include/
 OBJS =		collectagent.o simplemqttserver.o simplemqttserverthread.o simplemqttservermessage.o cassandra/Cassandra.o cassandra/cassandra_constants.o cassandra/cassandra_types.o
 SRC = 		$(patsubst cassandra/%,,$(OBJS:.o=.cpp))
-#LIBS =		$(shell ./cxx11flags.sh $(CXX) -L$(DCDBDEPLOYPATH)/lib/ -lthrift -lssl -lcrypto -lpthread -lboost_system | tail -1)
-LIBS =		-L$(DCDBDEPLOYPATH)/lib/ -lthrift -lssl -lcrypto -lpthread -lboost_system
+#LIBS =		$(shell ./cxx11flags.sh $(CXX) -L$(DCDBDEPLOYPATH)/lib/ -lthrift -lssl -lcrypto -lpthread -lboost_system -lboost_thread | tail -1)
+LIBS =		-L$(DCDBDEPLOYPATH)/lib/ -lthrift -lssl -lcrypto -lpthread -lboost_system -lboost_thread
 TARGET =	collectagent
 
 SUBTARGETS = cassandra/Cassandra.h

CollectAgent/simplemqttserver.h

@@ -19,8 +19,9 @@
 
 #include <boost/ptr_container/ptr_list.hpp>
 #include <boost/ptr_container/ptr_vector.hpp>
-#include <boost/thread/mutex.hpp>
 #include <boost/system/system_error.hpp>
+#include <boost/thread/mutex.hpp>
+#include <boost/thread/thread.hpp>
 
 #ifndef SIMPLEMQTTSERVER_H_
 #define SIMPLEMQTTSERVER_H_

CollectAgent/simplemqttserverthread.cpp

@@ -98,7 +98,7 @@ void SimpleMQTTServerThread::yield()
    * may have to wait a long time before the lock will be given
    * to the acceptThread.
    */
-  pthread_yield();
+  boost::this_thread::yield();
 }
 
 void SimpleMQTTServerAcceptThread::run()