Canceling a thread in C - c

Question

I'm trying to cancel a thread that way :
pthread_cancel(threads[id]);
And I release the mutex before cancelling the thread.
And after that I need to restart it because it was causing a DeadLock
usleep(1);
pthread_create(&threads[id], NULL, aFunction, &id );
usleep(1);
pthread_join(threads[id], NULL);
usleep(1);
I tried to remove pthread_join, but no luck.
This is a big part of the code :
#define LEFT(i) i
#define RIGHT(i) (i+1) % N
#define CreateSemaphore(s,v) sem_init( &s, 0, v)
#define WaitSemaphore(s) sem_wait( &s )
#define SignalSemaphore(s) sem_post( &s )
#define ReleaseSemaphore(s) sem_destroy( &s )
void restart(int id) {
release(id, LEFT(id));
int res;
if (allocated[id][RIGHT(id)] == 1) {
release(id, RIGHT(id));
}
res = pthread_cancel(threads[id]);
if (res != 0) {
perror("Thread cancelation failed");
exit(EXIT_FAILURE);
}
usleep(1);
res = pthread_create(&threads[id], NULL, aFunction, &id );
usleep(1);
if (res != 0 ) {
fprintf( stderr, "Error creating the thread %d \n", id );
exit( 1 );
}
printf("Waiting for thread to finish...\n");
res = pthread_join(threads[id], NULL);
if (res != 0) {
perror("Thread join failed");
exit(EXIT_FAILURE);
} else
printf("Passed join...\n");
usleep(1);
}
void * aFunction( void *i )
{
int value = *((int *)i);
while ( 1 ){
think( value );
take( value );
eat( value );
drop( value );
}
pthread_exit( NULL );
}
void take( int i ) {
request(i, LEFT(i));
WaitSemaphore( fork[LEFT(i)] );
allocation(i, LEFT(i));
usleep(100);
request(i, RIGHT(i));
WaitSemaphore( fork[RIGHT(i)] );
allocation(i, RIGHT(i));
usleep(100);
}
void drop( int i )
{
SignalSemaphore( forks[LEFT(i)] );
release(i, LEFT(i));
usleep(100);
SignalSemaphore( forks[RIGHT(i)] );
release(i, RIGHT(i));
usleep(100);
}
void release(int id, int f) {
WaitSemaphore(mutex[f]);
beingUsed[id][f] = 0;
currentAvail[f] = 1;
SignalSemaphore(mutex[f]);
}

Answer 1

did you try with pthread_exit(1) inside the thread code? This is other way to finish the running thread when it finishes it work.