util/RefCount: remove obsolete class

Makefile.am

@@ -450,7 +450,6 @@ libutil_a_SOURCES = \
 	src/util/TimeParser.cxx src/util/TimeParser.hxx \
 	src/util/UriUtil.cxx src/util/UriUtil.hxx \
 	src/util/Manual.hxx \
-	src/util/RefCount.hxx \
 	src/util/StaticFifoBuffer.hxx \
 	src/util/ForeignFifoBuffer.hxx \
 	src/util/DynamicFifoBuffer.hxx \

src/util/RefCount.hxx

-/*
- * Copyright 2003-2017 The Music Player Daemon Project
- * http://www.musicpd.org
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * - Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * - Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the
- * distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- * FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE
- * FOUNDATION OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
- * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
- * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
- * OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-/** \file
- *
- * A very simple reference counting library.
- */
-
-#ifndef MPD_REFCOUNT_HXX
-#define MPD_REFCOUNT_HXX
-
-#include <atomic>
-
-class RefCount {
-	std::atomic_uint n;
-
-public:
-#ifndef _LIBCPP_VERSION
-	/* the "constexpr" is missing in libc++'s "atomic"
-	   implementation */
-	constexpr
-#endif
-	RefCount():n(1) {}
-
-	void Increment() {
-		++n;
-	}
-
-	/**
-	 * @return true if the number of references has been dropped to 0
-	 */
-	bool Decrement() {
-		return --n == 0;
-	}
-};
-
-#endif