[Tarantool-patches] [PATCH 5/7] box/error: clarify purpose of reference counting in struct error
Nikita Pettik
korablev at tarantool.org
Wed Feb 19 17:16:54 MSK 2020
---
src/lib/core/diag.h | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/src/lib/core/diag.h b/src/lib/core/diag.h
index 5271733cb..a9181c522 100644
--- a/src/lib/core/diag.h
+++ b/src/lib/core/diag.h
@@ -72,6 +72,15 @@ struct error {
error_f raise;
error_f log;
const struct type_info *type;
+ /**
+ * Reference counting is basically required since
+ * instances of this structure are available in Lua
+ * as well (as cdata with overloaded fields and methods
+ * by the means of introspection). Thus, it may turn
+ * out that Lua's GC attempts at releasing object
+ * meanwhile it is still used in C internals or vice
+ * versa. For details see luaT_pusherror().
+ */
int refs;
/**
* Errno at the moment of the error
--
2.15.1
More information about the Tarantool-patches
mailing list