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view src/share/vm/memory/space.inline.hpp @ 10405:f2110083203d
8005849: JEP 167: Event-Based JVM Tracing
Reviewed-by: acorn, coleenp, sla
Contributed-by: Karen Kinnear <karen.kinnear@oracle.com>, Bengt Rutisson <bengt.rutisson@oracle.com>, Calvin Cheung <calvin.cheung@oracle.com>, Erik Gahlin <erik.gahlin@oracle.com>, Erik Helin <erik.helin@oracle.com>, Jesper Wilhelmsson <jesper.wilhelmsson@oracle.com>, Keith McGuigan <keith.mcguigan@oracle.com>, Mattias Tobiasson <mattias.tobiasson@oracle.com>, Markus Gronlund <markus.gronlund@oracle.com>, Mikael Auno <mikael.auno@oracle.com>, Nils Eliasson <nils.eliasson@oracle.com>, Nils Loodin <nils.loodin@oracle.com>, Rickard Backman <rickard.backman@oracle.com>, Staffan Larsen <staffan.larsen@oracle.com>, Stefan Karlsson <stefan.karlsson@oracle.com>, Yekaterina Kantserova <yekaterina.kantserova@oracle.com>
author | sla |
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date | Mon, 10 Jun 2013 11:30:51 +0200 |
parents | b9a9ed0f8eeb |
children | c49dcaf78a65 |
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/* * Copyright (c) 2000, 2012, 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_MEMORY_SPACE_INLINE_HPP #define SHARE_VM_MEMORY_SPACE_INLINE_HPP #include "gc_interface/collectedHeap.hpp" #include "memory/space.hpp" #include "memory/universe.hpp" #include "runtime/safepoint.hpp" inline HeapWord* Space::block_start(const void* p) { return block_start_const(p); } inline HeapWord* OffsetTableContigSpace::allocate(size_t size) { HeapWord* res = ContiguousSpace::allocate(size); if (res != NULL) { _offsets.alloc_block(res, size); } return res; } // Because of the requirement of keeping "_offsets" up to date with the // allocations, we sequentialize these with a lock. Therefore, best if // this is used for larger LAB allocations only. inline HeapWord* OffsetTableContigSpace::par_allocate(size_t size) { MutexLocker x(&_par_alloc_lock); // This ought to be just "allocate", because of the lock above, but that // ContiguousSpace::allocate asserts that either the allocating thread // holds the heap lock or it is the VM thread and we're at a safepoint. // The best I (dld) could figure was to put a field in ContiguousSpace // meaning "locking at safepoint taken care of", and set/reset that // here. But this will do for now, especially in light of the comment // above. Perhaps in the future some lock-free manner of keeping the // coordination. HeapWord* res = ContiguousSpace::par_allocate(size); if (res != NULL) { _offsets.alloc_block(res, size); } return res; } inline HeapWord* OffsetTableContigSpace::block_start_const(const void* p) const { return _offsets.block_start(p); } #endif // SHARE_VM_MEMORY_SPACE_INLINE_HPP