1 #include <stdlib.h> 2 #include <sys/wait.h> 3 #include <pthread.h> 4 #include <sys/types.h> 5 #include <unistd.h> 6 #include <stdio.h> 7 #include <signal.h> 8 9 static void *threadmain( void *dummy ) 10 { 11 sleep( (unsigned long)dummy ); 12 return NULL; 13 } 14 15 int main( int argc, char **argv ) 16 { 17 int ctr; 18 pid_t childpid; 19 pthread_t childthread; 20 void *res; 21 int status; 22 23 pthread_create( &childthread, NULL, threadmain, (void *)2 ); 24 25 childpid = fork(); 26 switch( childpid ) { 27 case 0: 28 pthread_create( &childthread, NULL, threadmain, 0 ); 29 pthread_join( childthread, &res ); 30 exit(0); 31 break; 32 case -1: 33 perror( "FAILED: fork failed\n" ); 34 break; 35 default: 36 break; 37 } 38 39 pthread_join( childthread, &res ); 40 ctr = 0; 41 while(waitpid(childpid, &status, 0) != childpid) { 42 sleep(1); 43 ctr++; 44 if (ctr >= 10) { 45 printf("FAILED - timeout waiting for child\n"); 46 return 0; 47 } 48 } 49 50 printf("PASS\n"); 51 52 return 0; 53 } 54 55 56
