Minor optimization of Dispatcher::dispatcher handler

eidheim · eidheim · commit b48eca9c9f3e · 2017-12-05T14:54:44.000+01:00
diff --git a/src/dispatcher.cc b/src/dispatcher.cc
@@ -6,6 +6,8 @@ Dispatcher::Dispatcher() {
     std::vector<std::list<std::function<void()>>::iterator> its;
     {
       std::unique_lock<std::mutex> lock(functions_mutex);
+      if(functions.empty())
+        return;
       its.reserve(functions.size());
       for(auto it=functions.begin();it!=functions.end();++it)
         its.emplace_back(it);

Original file line number	Diff line number	Diff line change
`@@ -6,6 +6,8 @@ Dispatcher::Dispatcher() {`
`6`	`6`	`std::vector<std::list<std::function<void()>>::iterator> its;`
`7`	`7`	`{`
`8`	`8`	`std::unique_lock<std::mutex> lock(functions_mutex);`
	`9`	`+ if(functions.empty())`
	`10`	`+ return;`
`9`	`11`	`its.reserve(functions.size());`
`10`	`12`	`for(auto it=functions.begin();it!=functions.end();++it)`
`11`	`13`	`its.emplace_back(it);`