Mercurial > hg > graal-compiler
diff src/share/vm/memory/watermark.hpp @ 0:a61af66fc99e jdk7-b24
Initial load
author | duke |
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date | Sat, 01 Dec 2007 00:00:00 +0000 |
parents | |
children | c18cbe5936b8 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/share/vm/memory/watermark.hpp Sat Dec 01 00:00:00 2007 +0000 @@ -0,0 +1,53 @@ +/* + * Copyright 2000-2001 Sun Microsystems, Inc. All Rights Reserved. + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * This code is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 only, as + * published by the Free Software Foundation. + * + * This code is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * version 2 for more details (a copy is included in the LICENSE file that + * accompanied this code). + * + * You should have received a copy of the GNU General Public License version + * 2 along with this work; if not, write to the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, + * CA 95054 USA or visit www.sun.com if you need additional information or + * have any questions. + * + */ + +// A water mark points into a space and is used during GC to keep track of +// progress. + +class Space; + +class WaterMark VALUE_OBJ_CLASS_SPEC { + friend class VMStructs; + private: + HeapWord* _point; + Space* _space; + public: + // Accessors + Space* space() const { return _space; } + void set_space(Space* s) { _space = s; } + HeapWord* point() const { return _point; } + void set_point(HeapWord* p) { _point = p; } + + // Constructors + WaterMark(Space* s, HeapWord* p) : _space(s), _point(p) {}; + WaterMark() : _space(NULL), _point(NULL) {}; +}; + +inline bool operator==(const WaterMark& x, const WaterMark& y) { + return (x.point() == y.point()) && (x.space() == y.space()); +} + +inline bool operator!=(const WaterMark& x, const WaterMark& y) { + return !(x == y); +}