// This test routine is only called by the master thread (thread_num = 0).
bool team_example(void)
{ bool ok = true;
size_t num_threads = NUMBER_THREADS;
// Check that no memory is in use or avialable at start
// (using thread_alloc in sequential mode)
size_t thread_num;
for(thread_num = 0; thread_num < num_threads; thread_num++)
{ ok &= thread_alloc::inuse(thread_num) == 0;
ok &= thread_alloc::available(thread_num) == 0;
}
// initialize work_all_
for(thread_num = 0; thread_num < num_threads; thread_num++)
{ // allocate separate memory for this thread to avoid false sharing
size_t min_bytes(sizeof(work_one_t)), cap_bytes;
void* v_ptr = thread_alloc::get_memory(min_bytes, cap_bytes);
work_all_[thread_num] = static_cast<work_one_t*>(v_ptr);
// incase this thread's worker does not get called
work_all_[thread_num]->ok = false;
// parameter that defines the work for this thread
work_all_[thread_num]->x = double(thread_num) + 1.;
}
ok &= team_create(num_threads);
ok &= team_work(worker);
ok &= team_destroy();
// go down so that free memrory for other threads before memory for master
thread_num = num_threads;
while(thread_num--)
{ // check that this thread was ok with the work it did
ok &= work_all_[thread_num]->ok;
// delete problem specific information
void* v_ptr = static_cast<void*>( work_all_[thread_num] );
thread_alloc::return_memory( v_ptr );
// check that there is no longer any memory inuse by this thread
// (for general applications, the master might still be using memory)
ok &= thread_alloc::inuse(thread_num) == 0;
// return all memory being held for future use by this thread
thread_alloc::free_available(thread_num);
}
return ok;
}
bool simple_ad(void)
{ bool ok = true;
size_t num_threads = NUMBER_THREADS;
// Check that no memory is in use or avialable at start
// (using thread_alloc in sequential mode)
size_t thread_num;
for(thread_num = 0; thread_num < num_threads; thread_num++)
{ ok &= thread_alloc::inuse(thread_num) == 0;
ok &= thread_alloc::available(thread_num) == 0;
}
// initialize info_all
problem_specific *info, *info_all[NUMBER_THREADS];
for(thread_num = 0; thread_num < num_threads; thread_num++)
{ // problem specific information
size_t min_bytes(sizeof(info)), cap_bytes;
void* v_ptr = thread_alloc::get_memory(min_bytes, cap_bytes);
info = static_cast<problem_specific*>(v_ptr);
info->x = double(thread_num) + 1.;
info_all[thread_num] = info;
}
ok &= run_all_workers(num_threads, info_all);
// go down so that free memory for other threads before memory for master
thread_num = num_threads;
while(thread_num--)
{ // delete problem specific information
void* v_ptr = static_cast<void*>( info_all[thread_num] );
thread_alloc::return_memory( v_ptr );
// check that there is no longer any memory inuse by this thread
ok &= thread_alloc::inuse(thread_num) == 0;
// return all memory being held for future use by this thread
thread_alloc::free_available(thread_num);
}
return ok;
}
