Method ~GlobalObjectHolder

src/jrd/Database.cpp:655–688

	}

	Database::GlobalObjectHolder::~GlobalObjectHolder()
	{
		// dtor is executed under g_mutex protection

		// Stole the object from the hash table without incrementing ref counter, so we will be the one who will delete the object
		// at the end of this function.
		RefPtr<Database::GlobalObjectHolder::DbId> entry(REF_NO_INCR, g_hashTable->lookup(m_id));
		fb_assert(entry);
		fb_assert(entry->holder == this);
		// We need to unlock the global mutex to safely shutdown some managers, so lock shutdown mutex to make sure that
		// other threads will wait until we done our shutdown routine.
		// This is done to eliminate potential race conditions involving global objects, such as shared memory.
		//! Be careful with order of mutex locking: first - `g_mutex`, second - `shutdownMutex`, but after `MutexUnlockGuard`
		//! this order will be reversed, so potentially a deadlock situation may occur here.
		MutexLockGuard guard(entry->shutdownMutex, FB_FUNCTION);

		{ // scope
			// here we cleanup what should not be globally protected
			MutexUnlockGuard guard(g_mutex, FB_FUNCTION);
			if (m_replMgr)
				m_replMgr->shutdown();
		}

		m_lockMgr = nullptr;
		m_eventMgr = nullptr;
		m_replMgr = nullptr;

		if (!g_hashTable->remove(m_id))
			fb_assert(false);

		entry->holder = nullptr;

		fb_assert(m_tempCacheUsage == 0);
	}

	LockManager* Database::GlobalObjectHolder::getLockManager()
	{