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common: scope_exit: Implement mechanism for canceling a scope exit.

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This commit is contained in:
bunnei 2020-03-31 15:16:07 -04:00
parent 4caff51710
commit 4df6ef04ac
1 changed files with 8 additions and 1 deletions
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9
src/common/scope_exit.h
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@ -12,10 +12,17 @@ template <typename Func>
struct ScopeExitHelper { struct ScopeExitHelper {
explicit ScopeExitHelper(Func&& func) : func(std::move(func)) {} explicit ScopeExitHelper(Func&& func) : func(std::move(func)) {}
~ScopeExitHelper() { ~ScopeExitHelper() {
func(); if (active) {
func();
}
}
void Cancel() {
active = false;
} }
Func func; Func func;
bool active{true};
}; };
template <typename Func> template <typename Func>