void *dowork(void *threadarg){ //our worker thread
threadargs *contain = (threadargs *) threadarg;//translate our args...
pthread_mutex_t *mutex = contain->mutex;
while(1){
pthread_mutex_lock(mutex);
int numthreads = (contain->numthreads);
pthread_cond_t *worker = (contain->worker);
int *requests = (contain->requests);
while ((*requests) == 0){//make sure its thread safe
pthread_cond_wait(worker, mutex);
}
int nextout = *(contain->nextout);
int socket = (*(contain->socketnumber))[nextout];//socket to send info to
//fprintf(stderr,"Socket: %d\n", socket);
if (socket == -9999){//exit hatch
pthread_mutex_unlock(mutex);
return NULL;
}
handlerequest(socket, (*(contain->saddr))[nextout]);//meat and potatos --> it sends out the string and logs the file
nextout = ( nextout + 1 ) % numthreads; // find numthreads from arg that is passed
(*(contain->socketnumber))[nextout] = nextout;//administrative duties here and down
(*requests) = (*requests)-1;
pthread_cond_t *producer = (contain->producer);
pthread_cond_signal(producer);
pthread_mutex_unlock(mutex);
}
return NULL;
}
int main( int argc , char *argv[] )
{
int ls , cs ;
ls = startserver( argc , argv ) ;
while( (cs = accept( ls , NULL , NULL )) > 0 )
handlerequest( cs ) ;
perror( "Accept" ) ;
}
void
serve(int fd)
{
int clfd, pid;
socklen_t clilen;
struct sockaddr_in cli_addr;
char ipaddr[INET6_ADDRSTRLEN];
const char *s;
for (;;) {
clilen = sizeof(struct sockaddr_in);
clfd = accept(fd, (struct sockaddr *) &cli_addr, &clilen);
if (clfd < 0) {
perror("error accepting");
exit(1);
}
pid = fork();
if (pid < 0) {
perror("error forking");
exit(1);
} else if (pid == 0) {
/* we use the fork twice trick to eliminate zombie process */
if ((pid = fork()) < 0) {
perror("error forking");
exit(1);
} else if (pid > 0)
exit(0);
close(fd);
s = inet_ntop(AF_INET, &(cli_addr.sin_addr), ipaddr, sizeof(ipaddr));
if (!s) {
perror("error inet_ntop");
exit(1);
}
handlerequest(clfd, s);
close(clfd);
exit(0);
} else {
close(clfd);
waitpid(pid, 0, 0);
}
}
}