/* ----------------
* index_close - close an index relation
*
* If lockmode is not "NO_LOCK", we then release the specified lock.
*
* Note that it is often sensible to hold a lock beyond index_close;
* in that case, the lock is released automatically at xact end.
* ----------------
*/
void index_close(struct relation *relation, lockmode_t lockmode)
{
struct lock_rel_id relid;
relid = relation->rd_lockInfo.lockRelId;
ASSERT(lockmode >= NO_LOCK && lockmode < MAX_LOCKMODE);
/* The relcache does the real work... */
rel_close(relation);
if (lockmode != NO_LOCK)
unlock_rel_id(&relid, lockmode);
}
int main(int argc, char **argv) {
if(argc<3) { fprintf(stderr,"Usage: hw6_receiver <remote host> <base port>\n"); exit(1);}
int sock = rel_socket(AF_INET, SOCK_DGRAM, 0);
if(sock < 0) {
perror("Creating socket failed: ");
exit(1);
}
struct sockaddr_in addr; // internet socket address data structure
addr.sin_family = AF_INET;
addr.sin_port = htons(atoi(argv[2])+3); // byte order is significant
addr.sin_addr.s_addr = INADDR_ANY;
int res = bind(sock, (struct sockaddr*)&addr, sizeof(addr));
if(res < 0) {
perror("Error binding: ");
exit(1);
}
int starttime = current_msec();
int totalbytes = 0;
char segment[MAX_SEGMENT];
while(1) {
int recv_count = rel_recv(sock, segment, MAX_SEGMENT);
if(recv_count == 0) break;
totalbytes+=recv_count;
// write out payload to stdout
fwrite(segment,1,recv_count,stdout);
}
int finished_msec = current_msec();
fprintf(stderr,"\nReceived %d bytes in %.4f seconds, %.2f kB/s\n",
totalbytes,
(finished_msec-starttime)/1000.0,
totalbytes/(float)(finished_msec-starttime));
fprintf(stderr, "\nFinished receiving file, closing socket.\n");
rel_close(sock);
fflush(stdout);
exit(0);
}
