void lifLEDArray::handle_msg() {
std::string toDo;
lifMsg nextMsg;
runThread = true;
bool sendStatus;
std::string successMsg;
while (runThread) {
//Lock the msgMutex
pthread_mutex_lock(&msgMutex);
//Check if msgQueue is empty
// - If it is empty, wait hear until you receive a signal that
// a message has been pushed onto mainMsgQueue
if (msgQueue.empty()) {
pthread_cond_wait(&msgQueuePushed, &msgMutex);
}
nextMsg = msgQueue.front();
msgQueue.pop();
pthread_mutex_unlock(&msgMutex);
toDo = nextMsg.get_command();
sendStatus = true;
successMsg = "";
try {
if (toDo == "Initialize") {
initialize();
} else if (toDo == "TurnOnLED") {
successMsg = turn_on_LED(to_num<unsigned int>(nextMsg.get_param_at(0)));
} else if (toDo == "TurnOffLED") {
turn_off_LED();
} else if (toDo == "NextLED") {
successMsg = turn_on_next_LED();
} else if (toDo == "ListLEDs") {
lifMsg LEDmsg;
LEDmsg.set_target("MainComm");
LEDmsg.set_source(devName);
LEDmsg.set_command("Output");
std::string LEDList;
LEDList = "";
std::string sp = " ";
std::string sc = ";";
for (int i = 0; i < LEDs.size(); i++)
LEDList = LEDList + LEDs.at(i)->get_name() + sp + to_string(LEDs.at(i)->get_wavelength()) + sc;
LEDmsg.add_params(LEDList);
send_back_msg(LEDmsg);
} else if (toDo == "Print") {
} else if (toDo == "StatusReport") {
sendStatus = false;
} else {
default_msg_handling(nextMsg);
}
if (sendStatus)
status_report("ALL", toDo + "SUCCESS" + " " + successMsg);
} catch (std::string errStr) {
status_report("ALL", toDo + "ERROR " + errStr);
}
}
}
void lifDIODevice::handle_msg() {
std::string toDo;
lifMsg nextMsg;
runThread = true;
bool sendStatus;
std::string successMsg;
while (runThread) {
//Lock the msgMutex
pthread_mutex_lock(&msgMutex);
//Check if msgQueue is empty
// - If it is empty, wait hear until you receive a signal that
// a message has been pushed onto mainMsgQueue
if (msgQueue.empty()) {
pthread_cond_wait(&msgQueuePushed, &msgMutex);
}
nextMsg = msgQueue.front();
msgQueue.pop();
pthread_mutex_unlock(&msgMutex);
//PUT CODE TO DO STUFF HERE
toDo = nextMsg.get_command();
successMsg = "";
sendStatus = true;
try {
if (toDo == "Initialize") {
initialize();
} else if (toDo == "Output") {
output(nextMsg);
} else if (toDo == "Input") {
input(nextMsg);
} else if (toDo == "High") {
high(nextMsg);
} else if (toDo == "Low") {
low(nextMsg);
} else if (toDo == "TurnOn") {
turn_on(nextMsg);
} else if (toDo == "TurnOff") {
turn_off(nextMsg);
} else if (toDo == "GetPinNames") {
get_pin_names();
} else if (toDo == "StatusReport") {
sendStatus = false;
} else {
default_msg_handling(nextMsg);
}
if (sendStatus)
status_report("ALL", toDo + "SUCCESS" + " " + successMsg);
} catch (std::string errStr) {
status_report("ALL", toDo + "ERROR " + errStr);
}
}
}
/* 'Cleans' the request and calls the appropriate handlers.
* This function alters the path to prepare it for processpath().
*/
static int
process_request (client_t *client, char *path)
{
char *p;
int rc, pathlen;
pathlen = strlen(path);
if (!pathlen)
return 1;
if (pathlen >= 12 && memcmp(path, "GET ", 4) == 0)
{
/* looks like a http request, validate it and update path_p */
char *http_p = path + pathlen - 9;
if (memcmp(http_p, " HTTP/1.0", 9) && memcmp(http_p, " HTTP/1.1", 9))
return 1;
*http_p = 0;
pathlen = strlen(path + 4);
memmove(path, path + 4, pathlen + 1);
client->http = 1;
}
if (*path != '/')
return 1;
if (!strcmp(path, "/status"))
{
status_report(client);
return 2;
}
/* Check for illegal characters in element */
if (strcspn(path, ">!@#$%`;|\"\\'<") < pathlen)
return 1;
p = strchr(path, '?');
if (p)
{
*p = 0;
debug_msg("Found subtree %s and %s", path, p+1);
rc = processfilter(client, p+1);
if (rc) return 1;
}
return 0;
}
void display()
{
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
gluPerspective(g_fovy,g_xy_aspect,1.0,10000.0);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
gluLookAt(g_CameraPos.x, g_CameraPos.y, g_CameraPos.z, g_CameraPos.x + g_CameraForward.x, g_CameraPos.y + g_CameraForward.y, g_CameraPos.z + g_CameraForward.z, 0.0f, 1.0f, 0.0f);
/*为了在程序打开时能观察到模型，请在此处自定义z轴负方向平移大小*/
glPushMatrix();
//call render function
render();
glPopMatrix();
status_report();
glCheckError("display");
glutSwapBuffers();
}
void
library_computer(void)
{
string sTemp;
if (d[8] < 0.0)
{
printf("Library Computer inoperable\n");
return;
}
printf("Computer active and awaiting command: ");
reads(sTemp);
printf("\n");
if (! strncmp(sTemp, "0", 1))
galactic_record();
else if (! strncmp(sTemp, "1", 1))
status_report();
else if (! strncmp(sTemp, "2", 1))
torpedo_data();
else if (! strncmp(sTemp, "3", 1))
nav_data();
else if (! strncmp(sTemp, "4", 1))
dirdist_calc();
else if (! strncmp(sTemp, "5", 1))
galaxy_map();
else
{
printf("Functions available from Library-Computer:\n\n");
printf(" 0 = Cumulative Galactic Record\n");
printf(" 1 = Status Report\n");
printf(" 2 = Photon Torpedo Data\n");
printf(" 3 = Starbase Nav Data\n");
printf(" 4 = Direction/Distance Calculator\n");
printf(" 5 = Galaxy 'Region Name' Map\n\n");
}
}
void mydg_echo( int sockfd, SA *servaddr, socklen_t servlen, SA *cliaddr , socklen_t clilen, char *filename )
{
int n, persist_timer_flag=0;
char mesg[MAXLINE];
socklen_t len, slen, slen1;
int connfd;
struct sockaddr_in ss, ss1;
char IPServer[20], IPClient[20];
FILE *ifp;
ssize_t bytes;
char sendline[MAXLINE], recvline[MAXLINE + 1];
const int on=1;
int onlength;
onlength = sizeof( on );
printf( "\n******************* CHILD SERVER INITIATED *********************\n" );
//printf( "Creating Datagram...\n" );
if( ( connfd = socket( AF_INET, SOCK_DGRAM, 0 ) ) == NULL )
{
printf( "socket error\n" );
exit(1);
}
getsockopt( sockfd, SOL_SOCKET, SO_DONTROUTE, &on, &onlength ) ;
setsockopt( connfd, SOL_SOCKET, SO_DONTROUTE, &on, sizeof( on ) );
printf("Setting connection socket to SO_DONTROUTE..\n", on );
/* Bind to IPServer and EPHEMERAL PORT and return EPHEMERAL PORT */
bind( connfd, (SA *) servaddr, sizeof( struct sockaddr_in ) );
slen = sizeof( ss );
if( getsockname( connfd, (SA *)&ss, &slen ) < 0 )
{
printf( "sockname error\n" );
exit(1);
}
printf("BOUND SOCKET ADDRESSES : %s\n", inet_ntop( AF_INET, &(ss.sin_addr), IPServer, MAXLINE ));
printf( "SERVER PORT: %d\n", ntohl(ss.sin_port) );
/* Connect to IPClient */
if( connect( connfd, cliaddr, clilen ) < 0 )
{
printf( "Error in connecting to server..\n" );
exit(1);
}
slen1 = sizeof( ss1 );
if( getpeername( connfd, (SA *)&ss1, &slen1 ) < 0 )
{
printf( "peername error\n" );
exit(1);
}
inet_ntop( AF_INET, &(ss1.sin_addr), IPClient, MAXLINE );
printf( "DESTINATION ADDRESS : %s\n",IPClient );
printf( "DESTINATION PORT : %d\n", ss1.sin_port);
sprintf( mesg, "%d\n", ss.sin_port );
printf("Sending the Ephemeral port number to client : %s..\n", mesg );
if( sendto( sockfd, mesg, sizeof( mesg ), 0, cliaddr, clilen) < 0 )
{
printf("ERROR IN SENDTO : %d ",errno);
exit(0);
}
printf( "Reading from the newly connected socket..\n" );
n = read( connfd, mesg, MAXLINE );
printf("Received data : %s\n",mesg );
if( n > 0 && strcmp( mesg, "ACK\n" ) == 0 )
{
printf("ACK recieved..\n");
printf("Closing the listening socket on parent..\n");
close( sockfd );
}
printf( "Reading file..\n" );
ifp = fopen( filename, "r" );
swnd1 = malloc( sender_window_size*sizeof(send_buffer) );
int i;
for( i = 0 ; i<sender_window_size; i++)
{
swnd1[i].data[0] = '\0';
}
int buffer_position, send_counter = 0, t, previous_na;
memset( sendline, '\0', sizeof( sendline ) );
printf("Sending file to the client..\n");
int j, sender_usable_window, ack_recieved, closing_child=0 ;
recv_advertisement = INT_MAX;
ssthresh=recv_window_size;
printf("\nSSTHRESH initiated to: %d\n",ssthresh);
while(1)
{
if( cwnd > ( nt - na ) )
sender_usable_window = cwnd - ( nt - na ) ;
else
sender_usable_window = 0 ;
printf("\nCongestion window : \nSender usable window : %d\nReciever window advertisement : %d\n", cwnd, sender_usable_window, recv_advertisement );
if(sender_usable_window==0)
{
printf( "\n*********************BUFFER FULL*************************\n");
}
/* Check for if recv_adv == 0 i.e. no more packets to be sent. */
j = MIN( sender_usable_window , recv_advertisement );
if( (j == 0) || (send_counter == recv_advertisement) )
{
while(1)
{
if( recv_advertisement == 0
&& persist_timer_flag == 0 )
{
persist_timer_flag = 1;
//signal(SIGALRM, sig_alrm);
//rtt_newpack( &rttinfo );
printf("************** PERSIST TIMER **************\n");
printf("Sending Probe packet..\n");
dg_retransmit( connfd, -1 );
}
// previous_na = na;
ack_recieved = dg_recieve_ack( connfd );
if( persist_timer_flag == 1 )
{
if( recv_advertisement > 0)
{
persist_timer_flag = 0;
struct itimerval value, ovalue, pvalue;
value.it_interval.tv_sec = 0; /* Zero seconds */
value.it_interval.tv_usec = 0; /* Two hundred milliseconds */
value.it_value.tv_sec = 0; /* Zero seconds */
value.it_value.tv_usec = 0; /* Five hundred milliseconds */
setitimer( ITIMER_REAL, &value, &ovalue );
//alarm(0);
break;
}
}
if( dup_ack == 3 && persist_timer_flag == 0 )
{
/* DUP ACK's case */
//dup_ack = 0;
ssthresh = MIN( cwnd, recv_advertisement );
ssthresh = ( MAX( ssthresh, 2 ) )/2;
printf("\n****************** 3 DUPLICATE ACK'S REC'VED ******************\n");
printf("Retransmitting the packet %d.. \n", ack_recieved);
printf("Setting ssthresh to half of current window size : '%d'.. \n", ssthresh );
dg_retransmit( connfd, ack_recieved );
}
if( ack_recieved == nt && persist_timer_flag == 0 )
{
/* All Acks have been recieved.. */
printf("All ACK's have been recieved for buffer..\n");
struct itimerval value, ovalue, pvalue;
value.it_interval.tv_sec = 0; /* Zero seconds */
value.it_interval.tv_usec = 0; /* Two hundred milliseconds */
value.it_value.tv_sec = 0; /* Zero seconds */
value.it_value.tv_usec = 0; /* Five hundred milliseconds */
setitimer( ITIMER_REAL, &value, &ovalue );
send_counter = 0;
break;
}
}
if( slowstart == 0 )
{
cwnd += 1;
}
}
else if( fread( sendline, 1, PACKET_SIZE, ifp ) != NULL )
{
printf("********************************* SENDING DATA ************************************\n");
printf("DATA being sent : '%s'\n", sendline );
printf("Size : %d\n", strlen(sendline) );
printf("***********************************************************************************\n");
printf("Starting RTT timer..\n");
if( rttinit == 0 )
{
rtt_init( &rttinfo ); /* first time we're called */
rttinit = 1;
rtt_d_flag = 1;
}
if( send_counter == 0 )
{
struct itimerval value, ovalue, pvalue;
signal(SIGALRM, sig_alrm);
rtt_newpack( &rttinfo ); /* initialize for this packet and sets retransmission counter to 0*/
value=rtt_start(&rttinfo);
setitimer( ITIMER_REAL, &value, &ovalue );
}
buffer_position = dg_send( connfd, sendline, strlen( sendline ) );
if ( sigsetjmp( jmpbuf, 1 ) != 0 )
{
if ( rtt_timeout( &rttinfo ) < 0 && persist_timer_flag == 1 )
{
err_msg( "Error : no response from client, giving up" );
rttinit = 0; /* reinit in case we're called again */
errno = ETIMEDOUT;
return(-1);
}
goto sendagain;
}
send_counter++;
status_report();
printf("Buffer position : %d\n", buffer_position );
memset( sendline, '\0', sizeof( sendline ) );
}
else
{
/* the last packets */
while( na != nt || (closing_child == 1) )
{
ack_recieved = dg_recieve_ack( connfd );
if( dup_ack == 3 )
{
/* DUP ACK's case */
ssthresh = MIN( cwnd, recv_advertisement );
ssthresh = ( MAX( ssthresh, 2 ) )/2;
printf("****************** 3 DUPLICATE ACK'S REC'VED ******************\n");
printf("Retransmitting the packet %d.. \n", ack_recieved);
printf("Setting ssthresh to half of current window size : '%d'.. \n", ssthresh );
dg_retransmit( connfd, ack_recieved );
}
status_report();
}
printf("**************** SERVER CHILD SHUTDOWN PROCEDURE INTITIATED *****************\n");
printf("\nCOMPLETED SENDING ALL PACKETS TO CLIENT..\n");
printf("SENDING A FIN..\n");
dg_retransmit(connfd,-3); //FIN PACKET
dg_recieve_ack( connfd );
dg_retransmit(connfd,-4); //final ACK
closing_child = 1;
printf("\nSHUTTING DOWN CHILD SERVER IN 2MSL seconds (ASSUMED AS 10 SECONDS)..\n");
struct itimerval value, ovalue, pvalue;
value.it_interval.tv_sec = 0; /* Zero seconds */
value.it_interval.tv_usec = 0; /* Two hundred milliseconds */
value.it_value.tv_sec = 10; /* Zero seconds */
value.it_value.tv_usec = 0; /* Five hundred milliseconds */
setitimer( ITIMER_REAL, &value, &ovalue );
}
continue;
sendagain :
if( closing_child == 1 )
{
printf("CLOSING THE CHILD PROCESS ON THE SERVER..\n");
exit(0);
break;
// TERMINATE SAFELY
}
if( recv_advertisement == 0 )
{
dg_retransmit( connfd, -1 );
}
else
{
printf("******************RTT TIMEOUT EXPERIENCED******************..\n");
printf("Retransmitting the packet %d.. )\n", na);
dg_retransmit( connfd, na );
}
ssthresh = MIN( cwnd, recv_advertisement );
ssthresh = ( MAX( ssthresh, 2 ) )/2;
cwnd = 1;
slowstart = 1;
printf("\n\nSetting ssthresh to half of current window size : '%d'.. \n", ssthresh );
}
}
void
Optimizer_thread::
emit_status()
{
emit (status_report(f_->status(timer_period_)));
}
void
Meshing_thread::
emit_status()
{
emit (status_report(f_->status(timer_period_)));
}
