Method getEvent

src/common/os/win32/isc_ipc.cpp:93–135

	}

	HANDLE getEvent(SLONG pid, SLONG signal_number)
	{
		Firebird::MutexLockGuard guard(&m_mutex, FB_FUNCTION);

		Item* oldestEvent = NULL;
		FB_UINT64 oldestAge = ~(0ULL);

		Item* evnt = m_events;
		const Item* const end = evnt + m_count;
		for (; evnt < end; evnt++)
		{
			if (evnt->pid == pid && evnt->signal == signal_number)
				break;

			if (evnt->age < oldestAge)
			{
				oldestEvent = evnt;
				oldestAge = evnt->age;
			}
		}

		if (evnt >= end)
		{
			HANDLE handle = ISC_make_signal(false, false, pid, signal_number);
			if (!handle)
				return NULL;

			if (m_count < MAX_OPN_EVENTS)
				m_count++;
			else
			{
				evnt = oldestEvent;
				CloseHandle(evnt->handle);
			}

			evnt->pid = pid;
			evnt->signal = signal_number;
			evnt->handle = handle;
		}

		evnt->age = ++m_clock;
		return evnt->handle;
	}

private:
	struct Item