common: scope_exit: Add a cancellable ScopeExit macro.

2021-01-31 16:54:10 +07:00 · 2021-01-31 16:54:10 +07:00 · 18175c71ed
parent ff3c7c068b
commit 18175c71ed
1 changed files with 6 additions and 0 deletions
--- a/src/common/scope_exit.h
+++ b/src/common/scope_exit.h
@ -49,3 +49,9 @@ ScopeExitHelper<Func> ScopeExit(Func&& func) {
 * \endcode
 */
 #define SCOPE_EXIT(body) auto CONCAT2(scope_exit_helper_, __LINE__) = detail::ScopeExit([&]() body)
+
+/**
+ * This macro is similar to SCOPE_EXIT, except the object is caller managed. This is intended to be
+ * used when the caller might want to cancel the ScopeExit.
+ */
+#define SCOPE_GUARD(body) detail::ScopeExit([&]() body)