Mercurial > hg > truffle
view src/share/vm/oops/klassOop.hpp @ 2100:b1a2afa37ec4
7003271: Hotspot should track cumulative Java heap bytes allocated on a per-thread basis
Summary: Track allocated bytes in Thread's, update on TLAB retirement and direct allocation in Eden and tenured, add JNI methods for ThreadMXBean.
Reviewed-by: coleenp, kvn, dholmes, ysr
author | phh |
---|---|
date | Fri, 07 Jan 2011 10:42:32 -0500 |
parents | f95d63e2154a |
children | c7f3d0b4570f |
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/* * Copyright (c) 1997, 2010, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. * */ #ifndef SHARE_VM_OOPS_KLASSOOP_HPP #define SHARE_VM_OOPS_KLASSOOP_HPP #include "oops/oop.hpp" // A klassOop is the C++ equivalent of a Java class. // Part of a klassOopDesc is a Klass which handle the // dispatching for the C++ method calls. // klassOop object layout: // [header ] // [klass_field] // [KLASS ] class klassOopDesc : public oopDesc { public: // size operation static int header_size() { return sizeof(klassOopDesc)/HeapWordSize; } // support for code generation static int klass_part_offset_in_bytes() { return sizeof(klassOopDesc); } // returns the Klass part containing dispatching behavior Klass* klass_part() { return (Klass*)((address)this + klass_part_offset_in_bytes()); } }; #endif // SHARE_VM_OOPS_KLASSOOP_HPP