Mercurial > hg > graal-compiler
diff src/share/vm/runtime/monitorChunk.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/runtime/monitorChunk.hpp Sat Dec 01 00:00:00 2007 +0000 @@ -0,0 +1,58 @@ +/* + * Copyright 1997-2000 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. + * + */ + +// Data structure for holding monitors for one activation during +// deoptimization. + +class MonitorChunk: public CHeapObj { + private: + int _number_of_monitors; + BasicObjectLock* _monitors; + BasicObjectLock* monitors() const { return _monitors; } + MonitorChunk* _next; + public: + // Constructor + MonitorChunk(int number_on_monitors); + ~MonitorChunk(); + + // link operations + MonitorChunk* next() const { return _next; } + void set_next(MonitorChunk* next) { _next = next; } + + // Tells whether the monitor chunk is linked into the JavaThread + bool is_linked() const { return next() != NULL; } + + // Returns the number of monitors + int number_of_monitors() const { return _number_of_monitors; } + + // Returns the index'th monitor + BasicObjectLock* at(int index) { assert(index >= 0 && index < number_of_monitors(), "out of bounds check"); return &monitors()[index]; } + + + // Memory management + void oops_do(OopClosure* f); + + // Tells whether the addr point into the monitors. + bool contains(void* addr) const { return (addr >= (void*) monitors()) && (addr < (void*) (monitors() + number_of_monitors())); } +};