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/*******************************************************************************
* Copyright (c) 2012 Draeger Medical GmbH (http://www.draeger.com).
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* CONTRIBUTORS:
* Peter Karlitschek (initial contribution)
*
*******************************************************************************/
#include <algorithm>
#include "MessageServiceController.h"
namespace etRuntime {
MessageServiceController::MessageServiceController() :
m_messageServices(),
m_freeIDs(),
m_running(false),
m_nextFreeID(0),
m_terminateServices(){
etMutex_construct(&m_mutex);
etSema_construct(&m_terminateSema);
}
int MessageServiceController::getNewID() {
etMutex_enter(&m_mutex);
int newID;
if (m_freeIDs.empty())
newID = m_nextFreeID++;
else {
newID = m_freeIDs.back();
m_freeIDs.pop();
}
etMutex_leave(&m_mutex);
return newID;
}
void MessageServiceController::freeID(int id) {
etMutex_enter(&m_mutex);
m_freeIDs.push(id);
etMutex_leave(&m_mutex);
}
void MessageServiceController::addMsgSvc(IMessageService& msgSvc) {
etMutex_enter(&m_mutex);
if (m_nextFreeID <= msgSvc.getAddress().m_threadID)
m_nextFreeID = msgSvc.getAddress().m_threadID + 1;
m_messageServices.push_back(&msgSvc);
etMutex_leave(&m_mutex);
}
void MessageServiceController::removeMsgSvc(IMessageService& msgSvc) {
etMutex_enter(&m_mutex);
MsgSvcList::iterator it = std::find(m_messageServices.begin(), m_messageServices.end(), &msgSvc);
if (it!=m_messageServices.end()) {
m_messageServices.erase(it);
}
etMutex_leave(&m_mutex);
}
IMessageService* MessageServiceController::getMsgSvc(int id) {
IMessageService* msgSvc = 0;
etMutex_enter(&m_mutex);
for (MsgSvcList::iterator it = m_messageServices.begin(); it!=m_messageServices.end(); ++it) {
if ((*it)->getAddress().m_threadID==id) {
msgSvc = *it;
break;
}
}
etMutex_leave(&m_mutex);
return msgSvc;
}
void MessageServiceController::start() {
// start all message services
for (MsgSvcList::iterator it = m_messageServices.begin(); it != m_messageServices.end(); ++it) {
(*it)->start();
}
m_running = true;
}
void MessageServiceController::stop() {
if (!m_running)
return;
//dumpThreads("org.eclipse.etrice.runtime.java.messaging.MessageServiceController.stop()");
terminate();
waitTerminate();
m_running = false;
}
void MessageServiceController::dumpThreads(std::string msg) {
// std::cout << "<<< begin dump threads <<<" << std::endl;
// std::cout << "=== " << msg << std::endl;
//TODO dump stack traces
// Map<Thread, StackTraceElement[]> traces = Thread.getAllStackTraces();
// for (Thread thread : traces.keySet()) {
// std::cout << "thread " << thread.getName() << std::endl;
// StackTraceElement[] elements = traces.get(thread);
// int n = 2;
// if (elements.length < n)
// n = elements.length;
// for (int i = 0; i < n; i++) {
// std::cout << " " << elements[i].toString() << std::endl;
// }
// }
// std::cout <<(">>> end dump threads >>>");
}
void MessageServiceController::terminate() {
// terminate all message services
etMutex_enter(&m_mutex);
m_terminateServices = m_messageServices;
MsgSvcList::reverse_iterator it = m_terminateServices.rbegin();
for (; it != m_terminateServices.rend(); ++it) {
(*it)->terminate();
}
etMutex_leave(&m_mutex);
}
void MessageServiceController::waitTerminate() {
etBool wait = true;
while(wait){
etMutex_enter(&m_mutex);
wait = !m_terminateServices.empty();
etMutex_leave(&m_mutex);
if(wait)
etSema_waitForWakeup(&m_terminateSema);
}
}
void MessageServiceController::resetAll() {
stop();
etMutex_enter(&m_mutex);
m_messageServices.clear();
while (!m_freeIDs.empty()) {
m_freeIDs.pop();
}
m_nextFreeID = 0;
etMutex_leave(&m_mutex);
}
void MessageServiceController::setMsgSvcTerminated(const IMessageService& msgSvc){
etMutex_enter(&m_mutex);
MsgSvcList::iterator it = std::find(m_terminateServices.begin(), m_terminateServices.end(), &msgSvc);
if (it!=m_terminateServices.end()) {
m_terminateServices.erase(it);
}
etSema_wakeup(&m_terminateSema);
etMutex_leave(&m_mutex);
}
} /* namespace etRuntime */
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