db: log SQL worker shutdown state

src/db/DBManager.cpp

@@ -4,6 +4,26 @@
 
 extern std::string g_stLocale;
 
+namespace
+{
+const char* SQLSlotName(int slot)
+{
+	switch (slot)
+	{
+		case SQL_PLAYER:
+			return "player";
+		case SQL_ACCOUNT:
+			return "account";
+		case SQL_COMMON:
+			return "common";
+		case SQL_HOTBACKUP:
+			return "hotbackup";
+		default:
+			return "unknown";
+	}
+}
+}
+
 CDBManager::CDBManager()
 {
 	Initialize();
@@ -45,6 +65,16 @@ void CDBManager::Quit()
 {
 	for (int i = 0; i < SQL_MAX_NUM; ++i)
 	{
+		sys_log(0,
+			"[SHUTDOWN] DBManager slot=%s begin main_pending=%u main_copied=%u main_results=%u async_pending=%u async_copied=%u async_results=%u",
+			SQLSlotName(i),
+			m_mainSQL[i] ? m_mainSQL[i]->CountQuery() : 0,
+			m_mainSQL[i] ? m_mainSQL[i]->CountCopiedQueryQueue() : 0,
+			m_mainSQL[i] ? m_mainSQL[i]->CountResult() : 0,
+			m_asyncSQL[i] ? m_asyncSQL[i]->CountQuery() : 0,
+			m_asyncSQL[i] ? m_asyncSQL[i]->CountCopiedQueryQueue() : 0,
+			m_asyncSQL[i] ? m_asyncSQL[i]->CountResult() : 0);
+
 		if (m_mainSQL[i])
 			m_mainSQL[i]->Quit();
 
@@ -53,6 +83,8 @@ void CDBManager::Quit()
 
 		if (m_directSQL[i])
 			m_directSQL[i]->Quit();
+
+		sys_log(0, "[SHUTDOWN] DBManager slot=%s done", SQLSlotName(i));
 	}
 }
 
@@ -182,4 +214,3 @@ void CDBManager::QueryLocaleSet()
 		m_asyncSQL[n]->QueryLocaleSet();
 	}
 }
-