From 8c4603c73675958efc960fbd4bb599a2909d106a Mon Sep 17 00:00:00 2001 From: Konstantin Date: Mon, 16 Jan 2023 14:52:43 +0100 Subject: Source codes --- ComLightLib/server/RefCounter.hpp | 38 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 38 insertions(+) create mode 100644 ComLightLib/server/RefCounter.hpp (limited to 'ComLightLib/server/RefCounter.hpp') diff --git a/ComLightLib/server/RefCounter.hpp b/ComLightLib/server/RefCounter.hpp new file mode 100644 index 0000000..9698cc8 --- /dev/null +++ b/ComLightLib/server/RefCounter.hpp @@ -0,0 +1,38 @@ +#pragma once +#include +#include +#include + +namespace ComLight +{ + // Very base class of objects, implements reference counting. + class RefCounter + { + std::atomic_uint referenceCounter; + + public: + + RefCounter() : referenceCounter( 0 ) { } + + inline virtual ~RefCounter() { } + + RefCounter( const RefCounter &that ) = delete; + RefCounter( RefCounter &&that ) = delete; + + protected: + + uint32_t implAddRef() + { + return ++referenceCounter; + } + + uint32_t implRelease() + { + // Might be a good idea to use locks, at least in debug builds. They're much slower than atomics, but with locks it's possible to detect when 2 threads call release at the same time, for object with counter = 1. + // It's a memory management bug, but it would be nice if debug builds would handle that case gracefully. + const uint32_t rc = --referenceCounter; + assert( rc != UINT_MAX ); + return rc; + } + }; +} \ No newline at end of file -- cgit v1.2.3