/*----------------------------------------------------------------------------*/
void pinInput(struct Pin pin)
{
LPC_GPIO_Type * const reg = calcPort(pin.data);
commonPinInit(pin);
reg->DIR &= ~(1 << pin.data.offset);
}
/*----------------------------------------------------------------------------*/
void pinOutput(struct Pin pin, bool value)
{
LPC_GPIO_Type * const reg = calcPort(pin.data);
commonPinInit(pin);
reg->DIR |= 1 << pin.data.offset;
pinWrite(pin, value);
}
/*----------------------------------------------------------------------------*/
struct Pin pinInit(PinNumber id)
{
struct Pin pin;
pin.data.port = PIN_TO_PORT(id);
pin.data.offset = PIN_TO_OFFSET(id);
pin.reg = id ? calcPort(pin.data) : 0;
return pin;
}
/*----------------------------------------------------------------------------*/
static inline void *calcMaskedReg(struct PinData data)
{
return (void *)(calcPort(data)->MASKED_ACCESS + (1UL << data.offset));
}
//Server - reciever
void createReciever(argsOfThreadRecieve *args)
{
int i, index = 0;
int len = (args->dvCount + 1);//correct length for buffer = DV+1
int* m_buffer = malloc(sizeof(int)*len);
if(m_buffer == NULL)
{
printf("Error Allocating\n");
pthread_exit(NULL);
}
int fixPort = calcPort(args->name, args->port);//calculate the correct port
int m_socket_fd = 0 , m_conn_fd = 0;
struct sockaddr_in m_socket_struct;
struct sockaddr_in client_addr;
socklen_t size = sizeof (client_addr);
//creates an endpoint for communication and returns a descriptor
m_socket_fd = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP);
if (m_socket_fd < 0 )
{
perror("Error creating socket\n");
free(m_buffer);
pthread_exit(NULL);
}
memset(&m_socket_struct, 0, sizeof(m_socket_struct)); //initialize the sockaddr_in memory block to 0
m_socket_struct.sin_family = AF_INET;
m_socket_struct.sin_addr.s_addr = htonl(INADDR_ANY);
m_socket_struct.sin_port = htons(fixPort);
//assigning a name to a socket
if ((bind(m_socket_fd, (struct sockaddr*) &m_socket_struct, sizeof(m_socket_struct))) < 0 )
{
perror("Error in Bind\n");
close(m_socket_fd);
free(m_buffer);
pthread_exit(NULL);
}
//listen for connections on a socket
if (listen(m_socket_fd, 10) < 0 )
{
perror("Error listening to socket\n");
close(m_socket_fd);
free(m_buffer);
pthread_exit(NULL);
}
//accept/reject jobs sent to a destination
m_conn_fd = accept(m_socket_fd, (struct sockaddr *) &client_addr, &size);
if (m_conn_fd < 0)
{
perror("Error on accepting\n");
free(m_buffer);
pthread_exit(NULL);
}
while(1)
{
pthread_mutex_lock(&mutexLock);
if(calc == 1)//reciever done
{
break;
}
int res;
pthread_mutex_unlock(&mutexLock);
//read from a file descriptor(m_buffer in our case)
sleep(1);
if ((res = read(m_conn_fd, m_buffer, len*sizeof(int))) < 0)
{
perror("Error in read\n");
close(m_conn_fd);
free(m_buffer);
pthread_exit(NULL);
}
else
{ //If read was successful
//findes the index and update the global array when done wake up calc
index = findNeiIndex(args->name, args->mySelf);
pthread_mutex_lock(&mutexLock);
//copy data to neighborsDv
for (i = 0; i < len; ++i)
{
args->neighborsDv[index][i] = m_buffer[i];
}
//check if got all neighbors DV
int check = 1;
for (i = 0; i < args->neighbors; ++i)
{
if(args->neighborsDv[i][0] == -1)
{
check = 0;
}
}
if(check)//got all neighbors DV
{
pthread_cond_signal(&calcCond);
}
pthread_mutex_unlock(&mutexLock);
}
}
pthread_mutex_unlock(&mutexLock);
free(m_buffer);
close(m_conn_fd);
pthread_exit(NULL);
}
//Client - sender
void createSender(argsOfThreadSender *args)
{
int m_socket_fd = 0, m_conn_fd, res, j, i;
int fixPort = calcPort(args->name, args->port);//calculate the correct port
char* localHost = args->ip;
int len = (args->dvCount + 1);//correct length for buffer = DV+1
int* m_buffer = malloc(sizeof(int)*len);
if(m_buffer == NULL)
{
printf("Error Allocating\n");
pthread_exit(NULL);
}
struct sockaddr_in m_serv_addr;
//creates an endpoint for communication and returns a descriptor
m_socket_fd = socket(AF_INET, SOCK_STREAM, 0);
if (m_socket_fd < 0 )
{
perror("Error creating socket\n");
free(m_buffer);
pthread_exit(NULL);
}
bzero(&m_serv_addr, sizeof(m_serv_addr));
m_serv_addr.sin_family = AF_INET;
m_serv_addr.sin_port = htons(fixPort);
m_serv_addr.sin_addr.s_addr = inet_addr(localHost);
//initiate a connection on a socket
i = 0;
while(i < (args->conLoop))//attempts to connect
{
m_conn_fd = connect(m_socket_fd,(struct sockaddr *)&m_serv_addr, sizeof(m_serv_addr));
if (m_conn_fd < 0)
{
sleep(1);
}
else
{
break;
}
i++;
}
sleep(1);
if(m_conn_fd < 0)
{
printf("ERROR in connecting - server\n");
close(m_socket_fd);
free(m_buffer);
pthread_exit(NULL);
}
while(1)
{
pthread_mutex_lock(&mutexLock);
if(dvIsChaneged == 1)//own dv changed
{
m_buffer[0] = 1;
}
else
{
m_buffer[0] = 0;
dvIsChaneged = 0;
}
//copy DV
for (j = 0; j < (len - 1); ++j)
{
m_buffer[j+1] = args->routerDV[j];
}
pthread_mutex_unlock(&mutexLock);
//send the DV
if((res = write(m_socket_fd, m_buffer, len*sizeof(int))) < 0)
{
free(m_buffer);
close(m_socket_fd);
pthread_exit(NULL);
}
pthread_mutex_lock(&mutexLock);
if(calc == 1)//sender done
{
break;
}
pthread_cond_wait(&senderCond, &mutexLock);//wait until calc wakes me up
pthread_mutex_unlock(&mutexLock);
}
pthread_mutex_unlock(&mutexLock);
free(m_buffer);
// if (close(m_socket_fd) < 0)
// printf("Error closing socketFD\n");
close(m_socket_fd);
pthread_exit(NULL);
}