X-Git-Url: https://main.carlh.net/gitweb/?a=blobdiff_plain;f=src%2Flib%2Fsignaller.h;h=44650de871cbbd4109aa403d6e465ce7899c7b6b;hb=dddc0771d9d4896f84d8a23d66c9c643e02950fa;hp=b67a639173cf3e4a5547568bf17797c266f0b761;hpb=c6871fe8617b3de03662b7630355059393bf8043;p=dcpomatic.git diff --git a/src/lib/signaller.h b/src/lib/signaller.h index b67a63917..44650de87 100644 --- a/src/lib/signaller.h +++ b/src/lib/signaller.h @@ -1,5 +1,5 @@ /* - Copyright (C) 2015 Carl Hetherington + Copyright (C) 2015-2021 Carl Hetherington This file is part of DCP-o-matic. @@ -18,20 +18,18 @@ */ + #ifndef DCPOMATIC_SIGNALLER_H #define DCPOMATIC_SIGNALLER_H + #include "signal_manager.h" #include + class WrapperBase { public: - WrapperBase () - : _valid (true) - , _finished (false) - {} - virtual ~WrapperBase () {} /* Can be called from any thread */ @@ -59,10 +57,11 @@ public: protected: /* Protect _valid and _finished */ mutable boost::mutex _mutex; - bool _valid; - bool _finished; + bool _valid = true; + bool _finished = false; }; + /** Helper class to manage lifetime of signals, specifically to address * the problem where an object containing a signal is deleted before * its signal is emitted. @@ -91,6 +90,7 @@ private: T _signal; }; + /** Parent for any class which needs to raise cross-thread signals (from non-UI * to UI). Subclasses should call, e.g. emit (boost::bind (boost::ref (MySignal), foo, bar)); */ @@ -100,8 +100,8 @@ public: /* Can be called from any thread */ virtual ~Signaller () { boost::mutex::scoped_lock lm (_signaller_mutex); - for (std::list::iterator i = _wrappers.begin(); i != _wrappers.end(); ++i) { - (*i)->invalidate (); + for (auto i: _wrappers) { + i->invalidate(); } } @@ -109,17 +109,17 @@ public: template void emit (T signal) { - Wrapper* w = new Wrapper (signal); + auto w = new Wrapper (signal); if (signal_manager) { - signal_manager->emit (boost::bind (&Wrapper::signal, w)); + signal_manager->emit (boost::bind(&Wrapper::signal, w)); } boost::mutex::scoped_lock lm (_signaller_mutex); /* Clean up finished Wrappers */ - std::list::iterator i = _wrappers.begin (); + auto i = _wrappers.begin (); while (i != _wrappers.end ()) { - std::list::iterator tmp = i; + auto tmp = i; ++tmp; if ((*i)->finished ()) { delete *i; @@ -138,4 +138,5 @@ private: std::list _wrappers; }; + #endif