int main(int argc, char * argv[])
{
context_t * context;
pthread_t * readers;
pthread_t * writers;
int check;
int a;
int arg;
int NUM_READERS = 5;
int NUM_WRITERS = 2;
int timeout = -1;
for(arg=1;arg<argc;arg++)
{
if (!strcmp(argv[arg], "--num-readers"))
{
arg++;
if (arg == argc)
{
fprintf(stderr, "--num-readers accepts an argument!\n");
exit(-1);
}
NUM_READERS = atoi(argv[arg]);
}
else if (!strcmp(argv[arg], "--num-writers"))
{
arg++;
if (arg == argc)
{
fprintf(stderr, "--num-writers accepts an argument!\n");
exit(-1);
}
NUM_WRITERS = atoi(argv[arg]);
}
else if (!strcmp(argv[arg], "--timeout"))
{
arg++;
if (arg == argc)
{
fprintf(stderr, "--timeout accepts an argument!\n");
exit(-1);
}
timeout = atoi(argv[arg]);
}
else
{
fprintf(stderr, "Unknown option - \"%s\"!\n", argv[arg]);
exit(-1);
}
}
num_active_mutex = initial_mutex_constant;
pthread_mutex_init(&num_active_mutex, NULL);
readers = malloc(sizeof(readers[0])*NUM_READERS);
writers = malloc(sizeof(writers[0])*NUM_WRITERS);
mylock = pthread_rwlock_fcfs_alloc();
for(a=0;a<NUM_READERS;a++)
{
context = malloc(sizeof(*context));
context->index = a;
check = pthread_create(
&readers[a],
NULL,
reader_thread,
context
);
if (check != 0)
{
fprintf(stderr, "Could not create Reader #%i!\n", a);
exit(-1);
}
}
for(a=0;a<NUM_WRITERS;a++)
{
context = malloc(sizeof(*context));
context->index = a;
check = pthread_create(
&writers[a],
NULL,
writer_thread,
context
);
if (check != 0)
{
fprintf(stderr, "Could not create Writer #%i!\n", a);
exit(-1);
}
}
if (timeout < 0)
{
while(1)
{
sleep(1);
}
}
else
{
int local_num_active = 1;
sleep(timeout);
stop = 1;
while (local_num_active)
{
usleep(500);
pthread_mutex_lock(&num_active_mutex);
local_num_active = num_active_threads;
pthread_mutex_unlock(&num_active_mutex);
}
}
pthread_rwlock_fcfs_destroy(mylock);
for(a=0;a<NUM_READERS;a++)
{
pthread_join(readers[a], NULL);
}
for(a=0;a<NUM_WRITERS;a++)
{
pthread_join(writers[a], NULL);
}
free(readers);
free(writers);
return 0;
}
void * create_lock()
{
pthread_rwlock_fcfs_t * lk;
lk = pthread_rwlock_fcfs_alloc();
return lk;
}
