#include <sys/types.h>#include <sys/socket.h>#include <arpa/inet.h>#include <stdio.h>#include <stdlib.h>#include <string.h>#include <signal.h>#include <pthread.h> #define sprint sprintf#define print printf#define fprint dprintf#define OREAD O_RDONLY#define exits(S) pthread_exit((int)(S))#define RWLock pthread_rwlock_t #define nil NULL #define mallocz(a, b) malloc(a) #define rlock pthread_rwlock_rdlock#define runlock pthread_rwlock_unlock#define wlock pthread_rwlock_wrlock#define wunlock pthread_rwlock_unlock