int main(int argc, char *argv[])
{
int sock;
struct sockaddr_in addr;
int port = get_port(argc, argv);
char server_address_string[16];
char buf[BUF_SIZE];
char repeat = 1;
int id;
set_address(argc, argv, server_address_string, LENGTH_OF(server_address_string));
srand(time(NULL));
id = rand();
sock = socket(AF_INET, SOCK_STREAM, 0);
if(WRONG_SOC(sock)) {
perror("socket");
exit(1);
}
addr.sin_family = AF_INET;
addr.sin_port = htons(port);
/* addr.sin_addr.s_addr = htonl(INADDR_LOOPBACK); */
addr.sin_addr.s_addr = inet_addr(server_address_string);
if(connect(sock, (struct sockaddr *)&addr, sizeof(addr)) < 0) {
perror("connect");
exit(2);
}
printf("%s:%d, ID: %d\n", server_address_string, port, id);
send(sock, &id, sizeof(id), EMPTY_FLAGS);
while(repeat) {
printf("-> ");
read_stdin(buf, LENGTH_OF(buf));
if(strlen(buf) == 0) continue;
if(!strncmp(buf, "close", LENGTH_OF(buf))) repeat = 0;
send_to(sock, buf);
// download file if its exists
if(strstr(buf, "download") && receive_int(sock)) {
receive_file(sock);
printf("%s\n", FILE_DOWNLOADED_MSG);
continue;
}
// prints info or error mesages
receive_and_print_msg(sock);
}
close(sock);
return 0;
}
void receive_file(int sock) {
char file_name[BUF_SIZE];
int file_size, buf_size, bytes, readed_bytes = 0;
FILE *f;
//receive file name
readed_bytes = recv(sock, file_name, LENGTH_OF(file_name), 0);
file_name[readed_bytes] = '\0';
//receive file size
file_size = receive_int(sock);
//receive buf size
buf_size = receive_int(sock);
print_file_info(file_name, file_size, buf_size);
if((f = fopen(file_name, "wb")) == NULL) {
printf("Can't create file\n");
return;
}
char buf[buf_size];
do {
bytes = recv(sock, buf, LENGTH_OF(buf), 0);
printf("%i\n", bytes);
// if last package
if(bytes < buf_size - 1){
char new_buf[bytes];
strncpy(new_buf, buf, bytes);
new_buf[bytes] = '\0';
fprintf(f, "%s", new_buf);
} else {
fprintf(f, "%s", buf);
fseek(f, readed_bytes, SEEK_SET);
}
readed_bytes += bytes;
printf("%i\n", readed_bytes);
} while(bytes >= buf_size - 1);
fclose(f);
}
/*** receive_str ******************************************************
Receive a character string. This function will block if the data
is not available.
Input: socket - the socket to receive the string from.
str - pointer to char array to put result into. It is
assumed to be of sufficient size.
Output: str will have the string received
Return: 0 if the connection was lost
non-zero if successful
**********************************************************************/
int receive_str( int socket, char str[] )
{
int len;
if ( receive_int(socket, &len) ) {
if ( receive_data(socket, str, len)==len ) {
str[len] = '\0';
return 1;
}
}
return 0;
}
Service* service_request (string service_name) {
int socket;
Service_description* s_description = NULL;
if (service_name == "" ||
!socket_initialization_client (&socket, SR_address, SR_port)) return NULL;
if (send_string (socket, "get_service") &&
receive_int (socket) != -1 &&
send_string (socket, service_name)) s_description = receive_service_description (socket);
close(socket);
return (s_description == NULL) ? NULL : new Service (s_description);
}
bool register_service (Service_description* s_description) {
int socket;
bool result = false;
if (s_description == NULL ||
!socket_initialization_client (&socket, SR_address, SR_port)) return false;
if (send_string (socket, "add_service") &&
receive_int (socket) != -1 &&
send_service_description(socket, s_description)) result = true;
close(socket);
return result;
}
bool register_service_provider (string address, string port) {
int socket;
bool result = false;
if (!check_address (address) ||
atoi(port.c_str()) < 1023 || atoi(port.c_str()) > 65535 ||
!socket_initialization_client (&socket, SR_address, SR_port)) return false;
if (send_string (socket, "add_service_provider") &&
receive_int (socket) != -1 &&
send_string (socket, address) &&
send_string (socket, port)) result = true;
close(socket);
return result;
}
int main(int argc, char ** argv){
/* variables declaration */
int i;
int *size_of_buffer = 0;
int num_of_ones = 0;
/* Number of rounds that the algorithm will run */
int rounds = 0;
/* buffer that master will send */
char *buffer = NULL;
/* sessionC handler */
session *s;
join_session(&argc, &argv, &s, "Slave3.spr");
role *Master = s->get_role(s, "Master");
/* receive size of buffer */
receive_int(Master, &size_of_buffer);
printf("size of buffer is %d\n", *size_of_buffer);
/* Dynamic memory allocation */
buffer = (char *) malloc( (*size_of_buffer) * sizeof(char));
/* Receive the buffer */
receive_string(Master, &buffer);
/* For 100000 rounds */
while(rounds++ < 100000){
/* Compute the number of ones */
num_of_ones = number_of_ones(buffer);
}
printf("num of ones is %d\n", num_of_ones);
/* Send the result to the master node */
send_int(Master, num_of_ones);
/* Deallocate memory */
free(buffer);
/* End current session */
end_session(s);
return EXIT_SUCCESS;
}
/* Main function */
int main(int argc, char **argv){
/* Variables declaration */
int i;
int j;
/* The number of non zero elements */
int *num_of_no_zeros = NULL;
/* number of rounds */
int rounds = 0;
/* Session start */
session *s;
join_session(&argc, &argv, &s, "worker3.spr");
role *Master = s->get_role(s, "Master");
printf("I am here\n");
/* Receive number of non zero elements */
receive_int(Master, &num_of_no_zeros);
printf("NUm of zeros is %d\n", *num_of_no_zeros);
/* Number of non zero elements */
int no_zeros = *num_of_no_zeros;
/* Declaration and dynamic memory allocation af array row_ptr */
int *row_ptr = (int *) malloc((nrows + 1) * sizeof(int));
if(row_ptr == NULL){
fprintf(stderr, "Out of memory, aborting program...\n");
exit(-1);
}
/* Decalration and dynamic memory allocation af array values */
int *values = (int *) malloc(no_zeros * sizeof(int));
if(values == NULL){
fprintf(stderr, "Out of memory, aborting program...\n");
exit(-1);
}
/* Declaration and dynamic memory allocation af col_ind array */
int *col_ind = (int *) malloc(no_zeros * sizeof(int));
if(col_ind == NULL){
fprintf(stderr, "Out of memory, aborting program...\n");
exit(-1);
}
/* Declaration and dynamic memory allocation af x array */
int *x = (int *) malloc(ncolumns * sizeof(int));
if(x == NULL){
fprintf(stderr, "Out of memory, aborting program...\n");
exit(-1);
}
/* Expected size of array */
size_t sz_rows = 1001;
size_t sz_cols = 1000;
size_t sz_no_zeros = no_zeros;
/* Receive row_ptr from master */
recv_int_array(Master, row_ptr, &sz_rows);
/* Receive values array from master */
recv_int_array(Master, values, &sz_no_zeros);
/* Receive col_ind array from master */
recv_int_array(Master, col_ind, &sz_no_zeros);
/* Receive x array from master */
recv_int_array(Master, x, &sz_cols);
printf("value[%d] = %d\n", 0, values[0]);
/* The array that will hold the results of the main computation */
int *results = NULL;
/* Define the amount of work that worker 1 will do */
int start_work;
int end_work;
int amount_of_work;
/* The amount of work that the master will do */
start_work = floor((worker3 * nrows)/participants) / 10;
end_work = floor(((worker3 + 1) * nrows)/participants) / 10;
amount_of_work = (end_work - start_work);
printf("start = %d - end = %d - amount of work = %d\n", start_work, end_work, amount_of_work);
/* Declaration and dynamic memory allocation af x array */
results = (int *) malloc( 2 * amount_of_work * sizeof(int));
if(results == NULL){
fprintf(stderr, "Out of memory, aborting program...\n");
exit(-1);
}
/* Run for 100 rounds */
while(rounds++ < 10000){
/* Main computation of the result. Worker1
computes the work that is assigned to it*/
for(i = start_work; i < end_work; i++){
for(j = row_ptr[i]; j < row_ptr[i + 1]; j++)
results[i] += values[j] * x[col_ind[j]];
}
}
int array[amount_of_work];
for(i = 0; i < amount_of_work; i++)
array[i] = 0;
//send_int_array(Master, array, amount_of_work);
//printf("here i am \n");
/* Send the results to the master */
//send_int_array(Master, values, amount_of_work);
send_int_array(Master, results, amount_of_work);
//send_int(Master, amount_of_work);
//recv_int_array(Master, col_ind, &sz_no_zeros);
printf("gamw!!!\n");
/* End current session */
end_session(s);
/* Free memory */
free(row_ptr);
row_ptr = NULL;
free(values);
values = NULL;
free(col_ind);
col_ind = NULL;
free(x);
x = NULL;
free(results);
results = NULL;
return EXIT_SUCCESS;
}