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/* ==== test_sock_1.c =========================================================
* Copyright (c) 1993 by Chris Provenzano, proven@athena.mit.edu
*
* Description : Test pthread_create() and pthread_exit() calls.
*
* 1.00 93/08/03 proven
* -Started coding this file.
*/
#include <pthread.h>
#include <pthread_np.h>
#include <errno.h>
#include <stdio.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <unistd.h>
#include <string.h>
#include "test.h"
struct sockaddr_in a_sout;
#define MESSAGE5 "This should be message #5"
#define MESSAGE6 "This should be message #6"
void *
sock_write(arg)
void *arg;
{
int fd = *(int *)arg;
pthread_set_name_np(pthread_self(), "writer");
CHECKe(write(fd, MESSAGE5, sizeof(MESSAGE5)));
return(NULL);
}
static pthread_mutex_t waiter_mutex = PTHREAD_MUTEX_INITIALIZER;
void*
waiter(sig)
{
int status;
pid_t pid;
pthread_set_name_np(pthread_self(), "waiter");
CHECKr(pthread_mutex_lock(&waiter_mutex));
printf("waiting for child\n");
CHECKe(pid = wait(&status));
ASSERT(WIFEXITED(status));
ASSERT(WEXITSTATUS(status) == 0);
printf("child exited\n");
CHECKr(pthread_mutex_unlock(&waiter_mutex));
return (NULL);
}
void *
sock_accept(arg)
void *arg;
{
pthread_t thread, wthread;
struct sockaddr a_sin;
int a_sin_size, a_fd, fd;
u_int16_t port;
char buf[1024];
pid_t pid;
port = 3276;
a_sout.sin_family = AF_INET;
a_sout.sin_port = htons(port);
a_sout.sin_addr.s_addr = INADDR_ANY;
CHECKe(a_fd = socket(AF_INET, SOCK_STREAM, 0));
while(1) {
if (bind(a_fd, (struct sockaddr *)&a_sout, sizeof(a_sout))==0)
break;
if (errno == EADDRINUSE) {
a_sout.sin_port = htons((++port));
continue;
}
DIE(errno, "bind");
}
printf("listening on port %d\n", port);
CHECKe(listen(a_fd, 2));
printf("%d: This should be message #1\n", getpid());
CHECKr(pthread_mutex_init(&waiter_mutex, NULL));
CHECKr(pthread_mutex_lock(&waiter_mutex));
CHECKr(pthread_create(&wthread, NULL, waiter, NULL));
CHECKe(pid = fork());
switch(pid) {
case 0:
execl("test_sock_2a", "test_sock_2a", "fork okay", NULL);
DIE(errno, "execl");
default:
break;
}
CHECKr(pthread_mutex_unlock(&waiter_mutex));
pthread_yield();
a_sin_size = sizeof(a_sin);
CHECKe(fd = accept(a_fd, &a_sin, &a_sin_size));
CHECKe(close(fd));
sleep(1);
printf("%d: This should be message #4\n", getpid());
a_sin_size = sizeof(a_sin);
memset(&a_sin, 0, sizeof(a_sin));
CHECKe(fd = accept(a_fd, &a_sin, &a_sin_size));
/* Setup a write thread */
CHECKr(pthread_create(&thread, NULL, sock_write, &fd));
CHECKe(read(fd, buf, 1024));
printf("%d: %s\n", getpid(), buf); /* message 6 */
CHECKe(close(fd));
if (pthread_mutex_trylock(&waiter_mutex) == EBUSY) {
sleep(2);
if (pthread_mutex_trylock(&waiter_mutex) == EBUSY) {
/* forcibly kill child */
CHECKe(kill(pid, SIGKILL));
PANIC("child %d took too long to exit", pid);
}
}
CHECKr(pthread_join(wthread, NULL));
return(NULL);
}
int
main()
{
pthread_t thread;
setbuf(stdout, NULL);
setbuf(stderr, NULL);
CHECKr(pthread_create(&thread, NULL, sock_accept,
(void *)0xdeadbeaf));
CHECKr(pthread_join(thread, NULL));
SUCCEED;
}
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