// Called when the core is done with a bank item
public void release_item(Core core, Bank bank, Dictionary <int, ItemLock> bank_lock, int id)
{
#if VM_MULTI_CORE
core.ASSERT_ERR(!bank.contains(id), CoreErrorType.INVALID_BANK_ID, "Bank item doesn't exist, so can't be released: " + id);
bank_lock[id].release_use();
#endif
}
// Used when an instruction wants to request access to a bank item
// The request will only be granted if the item is available
public WItem request_item(Core core, Bank bank, Dictionary <int, ItemLock> bank_lock, int id)
{
core.ASSERT_ERR(!bank.contains(id), CoreErrorType.INVALID_BANK_ID, "Bank item doesn't exist: " + id);
// Dealing with multi threading
#if VM_MULTI_CORE
// First request use of the item
if (bank_lock[id].request_use(core.state.id))
{
core.state.multi_core_state = MultiCoreState.RUNNING;
return(bank.get_item(id));
}
// If we are denied the request, we are in a BLOCKED state
else
{
core.state.multi_core_state = MultiCoreState.BLOCKED;
return null
}
#else
// Dealing with a single thread
// We don't need to check locks, as it impossible to encounter concurrent locks
return(bank.get_item(id));
#endif
}
public T pop()
{
core.ASSERT_ERR(empty(), CoreErrorType.STACK_UNDERFLOW, "Stack underflow!");
return(this.stack[this.sp--]);
}
