oysteikt/mpd
0
0
Fork 0
Code Issues Pull Requests Releases Activity

thread/SafeSingleton: pass parameters to constructor

Browse Source
This commit is contained in:
Max Kellermann 2018-01-02 12:26:53 +01:00
parent 1fd8d46064
commit 5544375002
1 changed files with 3 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
src/thread/SafeSingleton.hxx
View File

@ -37,11 +37,12 @@ class SafeSingleton {
static T *instance; static T *instance;
public: public:
SafeSingleton() { template<typename... Args>
explicit SafeSingleton(Args&&... args) {
const std::lock_guard<Mutex> lock(mutex); const std::lock_guard<Mutex> lock(mutex);
if (ref == 0) if (ref == 0)
instance = new T; instance = new T(std::forward<Args>(args)...);
/* increment after creating the instance; this way is /* increment after creating the instance; this way is
exception-safe, because we must not increment the exception-safe, because we must not increment the