void CSw::vSwitchStateMachine()
{
if (m_pTimer->isWaitSwitch() == false) {
return;
}
for (int i = 0;i < SW_NAME_MAX;i++) {
int iNowState = digitalRead(iGetPort(i));
switch(m_tSwStatus[i].iOldState) {
case SW_STATE_OFF:
if (iNowState == HIGH) {
vOffToOff(i);
} else {
vOffToOn(i);
}
break;
case SW_STATE_ON:
if (iNowState == HIGH) {
vOnToOff(i);
} else {
vOnToOn(i);
}
break;
case SW_STATE_LONG_ON:
if (iNowState == HIGH) {
vLongOnToOff(i);
} else {
vLongOnToLongOn(i);
}
break;
}
}
}
void *vProcessConnect(void *_vArg)
{
// Thread's argument is cast to a XPCConnectInfo object
XPCConnectInfo *connectInfo = (XPCConnectInfo *)_vArg;
int iRet; // Number of bytes returned from receiving
// or sending data on the socket
int iPid; // Process ID of the spawn application
char sSocketBuf[1024]; // Stores the raw bytes received from the
// socket
XPCPort aPort; // Stores the chosen socket port number
// XPCClientConnection linked-list pointers
XPCClientConnection *currentClient;
XPCClientConnection *previousClient;
try
{
// Receive socket data
iRet = connectInfo->getSocket()->iRecieveMessage((void *)sSocketBuf, sizeof(sSocketBuf));
if (iRet == 0)
{
cout << "Receive Error: No Data Received of Socket" << endl;
delete connectInfo;
return 1;
}
// Cast raw data to a XPCSpawnInfo object
XPCSpawnInfo *spawnData = (XPCSpawnInfo *)sSocketBuf;
if (spawnData->cGetAction() == SPAWN)
{
// If the action from the connected process is SPAWN, an attempt
// is made to spawn the requested application
iPid = fork();
if (iPid == 0) // This is the child process
{
// The requested application is spawned
if (execlp(spawnData->sGetAppName(), spawnData->sGetAppName(), NULL) == -1)
{
// If the requested application cannot be
// spawned, a XPCPort object is returned to the
// client with a port value of -1 indicating an
// error occured
XPCPort failurePort((long int)-1);
iRet = connectInfo->getSocket()->iSendMessage((void *)&failurePort, sizeof(XPCPort));
if (iRet == 0)
{
cerr << "Socket Send Error: Error sending failure to client" << endl;
}
delete connectInfo;
return 1;
}
}
// Lock the domain semaphore and insert the socket message into
// the XPCClientConnection linked-list
connectInfo->getSem()->vLockWait();
vCClientConnectionInsert(spawnData->sGetAppName(), iPid, connectInfo->getSocket());
// The semaphore is unlocked once the socket message is inserted
// into the linked-list
connectInfo->getSem()->vUnlock();
}
else
{
// Since the connected process's action is REGISTER, the socket
// data is cast to a XPCServerSpawn object
XPCServerSpawn *serverSpawn = (XPCServerSpawn *)sSocketBuf;
// Retrieve an Unused Port
int iPort = iGetPort();
aPort.vSetPort(iPort);
// The domain sempaphore is locked before the XPCClientConnection
// linked-list is traversed
connectInfo->getSem()->vLockWait();
// The linked-list is traversed until the registered application
// name and process ID can be located
previousClient = currentClient = firstClient;
while (currentClient != NULL)
{
if (*currentClient == *serverSpawn)
{
// If the client information is found, the XPCPort
// object is sent to both the client and the
// server
iRet = connectInfo->getSocket()->iSendMessage((void *)&aPort, sizeof(XPCPort));
if (iRet == 0)
{
cerr << "Error sending XPCPort to client" << endl;
}
// A sleep is done to insure the server receives
// the socket port and binds to it before the
// client has the change to connect
sleep(2);
iRet = currentClient->getSocket()->iSendMessage((void *)&aPort, sizeof(XPCPort));
if (iRet == 0)
{
cerr << "Error sending XPCPort to server" << endl;
}
// Remove the found client node from the linked-list
vRemoveNode(currentClient);
break;
}
previousClient = currentClient;
currentClient = currentClient->next;
}
// If the client information could not be located, a XPCPort object
// containing a -1 is sent to the server indicating failure
if (currentClient == NULL)
{
XPCPort failurePort((long int)-1);
iRet = connectInfo->getSocket()->iSendMessage((void *)&failurePort, sizeof(XPCPort));
if (iRet == 0)
{
cerr << "Error sending socket data" << endl;
}
}
// The domain semaphore protecting the linked-list is unlocked
connectInfo->getSem()->vUnlock();
}
}
catch(XPCException &exceptObject)
{
// All socket related errors are caught and displayed to the user
cout << "Spawn Server Error: " << exceptObject.sGetException() << endl;
}
delete connectInfo;
}
