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authorJörg Frings-Fürst <jff@merkur>2014-05-18 16:08:14 +0200
committerJörg Frings-Fürst <jff@merkur>2014-05-18 16:08:14 +0200
commita15cf65c44d5c224169c32ef5495b68c758134b7 (patch)
tree3419f58fc8e1b315ba8171910ee044c5d467c162 /libcult/cult/mm/arch/generic/counter.hxx
Imported Upstream version 3.3.0.2upstream/3.3.0.2
Diffstat (limited to 'libcult/cult/mm/arch/generic/counter.hxx')
-rw-r--r--libcult/cult/mm/arch/generic/counter.hxx45
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diff --git a/libcult/cult/mm/arch/generic/counter.hxx b/libcult/cult/mm/arch/generic/counter.hxx
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+// file : cult/mm/arch/generic/counter.hxx
+// author : Boris Kolpackov <boris@kolpackov.net>
+// copyright : Copyright (c) 2005-2010 Boris Kolpackov
+// license : GNU GPL v2 + exceptions; see accompanying LICENSE file
+
+#ifndef CULT_MM_ARCH_GENERIC_COUNTER_HXX
+#define CULT_MM_ARCH_GENERIC_COUNTER_HXX
+
+#include <cult/types/fundamental.hxx>
+#include <cult/sched/spin.hxx>
+
+namespace Cult
+{
+ namespace MM
+ {
+ class Counter: public NonCopyable
+ {
+ public:
+ Counter ();
+
+ // After failure assume the counter has its old value.
+ //
+ Void
+ inc_ref ();
+
+
+ // After failure assume the counter has its new value.
+ //
+ Boolean
+ dec_ref ();
+
+
+ Size
+ count () const;
+
+ private:
+ Size value_;
+ mutable Sched::Spin spin_;
+ };
+ }
+}
+
+#include <cult/mm/arch/generic/counter.ixx>
+
+#endif // CULT_MM_ARCH_GENERIC_COUNTER_HXX