/* test readline() */#include	"unpthread.h"static char	*infile;	/* from argv[1]; read-only by threads */void *myfunc(void *ptr){	int		i, fdin;	char	buf[MAXLINE];	FILE	*fpout;	snprintf(buf, sizeof(buf), "temp.%d", pthread_self());	fpout = Fopen(buf, "w+");	/* printf("created %s\n", buf); */	for (i = 0; i < 5; i++) {		fdin = Open(infile, O_RDONLY, 0);		while (Readline(fdin, buf, sizeof(buf)) > 0) {			fputs(buf, fpout);		}		Close(fdin);	}	Fclose(fpout);	printf("thread %d done\n", pthread_self());	return(NULL);}intmain(int argc, char **argv){	int				i, nthreads;	pthread_t		tid;	if (argc != 3)		err_quit("usage: test04 <input-file> <#threads>");	infile = argv[1];	nthreads = atoi(argv[2]);	for (i = 0; i < nthreads; i++) {		Pthread_create(&tid, NULL, myfunc, NULL);	}	pause();	exit(0);}