Mercurial > hg > graal-compiler
view src/share/vm/services/memTrackWorker.hpp @ 6408:e5768e936147
Allow snippets to inherit the stateAfter and stamp from the replacee
author | Christian Wimmer <christian.wimmer@oracle.com> |
---|---|
date | Fri, 14 Sep 2012 14:21:33 -0700 |
parents | 7e5976e66c62 |
children | ecd24264898b |
line wrap: on
line source
/* * Copyright (c) 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_SERVICES_MEM_TRACK_WORKER_HPP #define SHARE_VM_SERVICES_MEM_TRACK_WORKER_HPP #include "memory/allocation.hpp" #include "runtime/thread.hpp" #include "services/memRecorder.hpp" // Maximum MAX_GENERATIONS generation data can be tracked. #define MAX_GENERATIONS 512 class MemTrackWorker : public NamedThread { private: // circular buffer. This buffer contains recorders to be merged into global // snaphsot. // Each slot holds a linked list of memory recorders, that contains one // generation of memory data. MemRecorder* _gen[MAX_GENERATIONS]; int _head, _tail; // head and tail pointers to above circular buffer bool _has_error; public: MemTrackWorker(); ~MemTrackWorker(); _NOINLINE_ void* operator new(size_t size); _NOINLINE_ void* operator new(size_t size, const std::nothrow_t& nothrow_constant); void start(); void run(); inline bool has_error() const { return _has_error; } // task at synchronization point void at_sync_point(MemRecorder* pending_recorders); // for debugging purpose, they are not thread safe. NOT_PRODUCT(static int count_recorder(const MemRecorder* head);) NOT_PRODUCT(int count_pending_recorders() const;) NOT_PRODUCT(int _sync_point_count;) NOT_PRODUCT(int _merge_count;) NOT_PRODUCT(int _last_gen_in_use;) inline int generations_in_use() const { return (_tail >= _head ? (_tail - _head + 1) : (MAX_GENERATIONS - (_head - _tail) + 1)); } }; #endif // SHARE_VM_SERVICES_MEM_TRACK_WORKER_HPP