int main(int argc, char **argv)
{
int listenfd, *connfd, port, clientlen, i;
struct sockaddr_in clientaddr;
pthread_t tid;
port_queue prod_var;
/* Check command line args */
if (argc != 2) {
fprintf(stderr, "usage: %s <port>\n", argv[0]);
exit(1);
}
port = atoi(argv[1]);
connfdqp = queueInit ();
prod_var.port = port;
prod_var.q = connfdqp;
Pthread_create(&tid, NULL, producer, &prod_var);
printf("Producer thread created %u\n", (unsigned int) tid);
Pthread_detach(tid);
printf ("Producer thread detached\n");
for (i = 0; i < MAXTHREAD; i++) {
Pthread_create(&tid, NULL, consumer, connfdqp);
printf("Consumer thread created %u\n", (unsigned int) tid);
Pthread_detach(tid);
printf("Consumer thread detached\n");
}
printf("Main thread exited\n");
Pthread_exit(NULL);
}
int main() {
int i;
pthread_t tid;
char *msgs[] = {"hello from foo", "hello from bar"};
ptr = msgs;
for (i = 0; i < N; ++i)
Pthread_create(&tid, NULL, thread, (void *)i);
Pthread_exit(NULL);
}
/*
* job - a thread function to process http request and response
*
* basically it finish three tasks:
* forward request to server when no cache hit
* forward response to client from server or cache
* safely close file descriptor and exit thread when error
*
*/
void job(void *arg) {
Pthread_detach(pthread_self());
// get file descriptor and free the pointer
int to_client_fd = *(int *)arg;
Free(arg);
int to_server_fd = -1;
int rc = 0;
char cache_id[MAXLINE];
char cache_content[MAX_OBJECT_SIZE];
unsigned int cache_length;
rc = forward_to_server(to_client_fd, &to_server_fd, cache_id,
cache_content, &cache_length);
if (rc == -1) {
// some error
close_fd(&to_client_fd, &to_server_fd);
Pthread_exit(NULL);
} else if (rc == 1) {
// found in cache, read from cache
if (forward_to_client_from_cache(to_client_fd, cache_content,
cache_length) == -1) {
close_fd(&to_client_fd, &to_server_fd);
Pthread_exit(NULL);
}
} else if (rc == 2) {
// non GET method, POST etc.
if (forward_to_client(to_client_fd, to_server_fd) == -1) {
close_fd(&to_client_fd, &to_server_fd);
Pthread_exit(NULL);
}
} else {
// GET method and write to cache
if (forward_to_client_and_cache(to_client_fd, to_server_fd, cache_id,
cache_content) == -1) {
close_fd(&to_client_fd, &to_server_fd);
Pthread_exit(NULL);
}
}
close_fd(&to_client_fd, &to_server_fd);
return;
}
/* these errors only terminate thread, not the whole application */
void unix_error(char *msg) /* unix-style error */
{
fprintf(stderr, "%s: %s\n", msg, strerror(errno));
fflush(stderr);
Pthread_exit(0);
}
void app_error(char *msg) /* application error */
{
fprintf(stderr, "%s\n", msg);
fflush(stderr);
Pthread_exit(0);
}
void dns_error(char *msg) /* dns-style error */
{
fprintf(stderr, "%s: DNS error %d\n", msg, h_errno);
fflush(stderr);
Pthread_exit(0);
}
void posix_error(int code, char *msg) /* posix-style error */
{
fprintf(stderr, "%s: %s\n", msg, strerror(code));
fflush(stderr);
Pthread_exit(0);
}
