void *wait_for_work(void *tp_v)
{
tpool_t *tp = tp_v;
for(;;) {
/* aquire M & K */
//pthread_mutex_lock(&tp->work_lock);
//INFO("aquired work_lock");
pthread_mutex_lock(&tp->addr_valid_lock);
INFO("aquired addr_valid_lock");
while( tp->new_fn == NULL ) {
pthread_cond_wait(&tp->addr_valid_signal,
&tp->addr_valid_lock);
}
dispatch_fn work_func = tp->new_fn;
void * work_args = tp->new_fn_arg;
pthread_mutex_lock(&tp->addr_null_lock);
tp->new_fn = NULL;
pthread_cond_signal(&tp->addr_null_signal);
pthread_mutex_unlock(&tp->addr_null_lock);
pthread_mutex_unlock(&tp->addr_valid_lock);
//pthread_mutex_unlock(&tp->work_lock);
work_func(work_args);
}
}
Server::Server(void (*a_work_func)(char *, char *, int), int my_port) {
work_func = a_work_func;
port = my_port;
int address_size;
int i, len;
char buf[4000]; // for receiving data from clients
temp_buf = new char[16384]; // space for return data
sock_descriptor = socket(AF_INET, SOCK_STREAM, 0);
if (sock_descriptor == -1) {
perror("call to socket");
exit(1);
}
bzero(&sin, sizeof(sin));
sin.sin_family = AF_INET;
sin.sin_addr.s_addr = INADDR_ANY;
sin.sin_port = htons(port);
if (bind(sock_descriptor, (struct sockaddr *)&sin, sizeof(sin)) == -1) {
perror("call to bind");
exit(1);
}
if (listen(sock_descriptor, 20) == -1) {
perror("call to listen");
exit(1);
}
while(1) {
temp_sock_descriptor =
accept(sock_descriptor, (struct sockaddr *)&pin,
&address_size);
if (temp_sock_descriptor == -1) {
perror("call to accept");
exit(1);
}
if (recv(temp_sock_descriptor, buf, 4000, 0) == -1) {
perror("call to recv");
exit(1);
}
// this calls the work function passed to the class constructor:
work_func(buf, temp_buf, 16384);
// the virtual function doWork has filled in the
// data to be returned to the client in 'temp_buf':
len = strlen(temp_buf);
if (send(temp_sock_descriptor, temp_buf, len, 0) == -1) {
perror("call to send");
exit(1);
}
close(temp_sock_descriptor);
}
}
void thread_func(detail::barrier& work_barrier, const random_generator_ptr& rng)
{
work_barrier.count_down_and_wait();
work_func(rng);
}
