Tue, 09 Oct 2012 10:09:34 -0700
7197424: update copyright year to match last edit in jdk8 hotspot repository
Summary: Update copyright year to 2012 for relevant files
Reviewed-by: dholmes, coleenp
zgu@3900 | 1 | /* |
zgu@3900 | 2 | * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved. |
zgu@3900 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
zgu@3900 | 4 | * |
zgu@3900 | 5 | * This code is free software; you can redistribute it and/or modify it |
zgu@3900 | 6 | * under the terms of the GNU General Public License version 2 only, as |
zgu@3900 | 7 | * published by the Free Software Foundation. |
zgu@3900 | 8 | * |
zgu@3900 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
zgu@3900 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
zgu@3900 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
zgu@3900 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
zgu@3900 | 13 | * accompanied this code). |
zgu@3900 | 14 | * |
zgu@3900 | 15 | * You should have received a copy of the GNU General Public License version |
zgu@3900 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
zgu@3900 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
zgu@3900 | 18 | * |
zgu@3900 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
zgu@3900 | 20 | * or visit www.oracle.com if you need additional information or have any |
zgu@3900 | 21 | * questions. |
zgu@3900 | 22 | * |
zgu@3900 | 23 | */ |
zgu@3900 | 24 | |
zgu@3900 | 25 | #ifndef SHARE_VM_SERVICES_MEM_TRACK_WORKER_HPP |
zgu@3900 | 26 | #define SHARE_VM_SERVICES_MEM_TRACK_WORKER_HPP |
zgu@3900 | 27 | |
zgu@3900 | 28 | #include "memory/allocation.hpp" |
zgu@3900 | 29 | #include "runtime/thread.hpp" |
zgu@3900 | 30 | #include "services/memRecorder.hpp" |
zgu@3900 | 31 | |
zgu@3900 | 32 | // Maximum MAX_GENERATIONS generation data can be tracked. |
zgu@3900 | 33 | #define MAX_GENERATIONS 512 |
zgu@3900 | 34 | |
zgu@3900 | 35 | |
zgu@3900 | 36 | class MemTrackWorker : public NamedThread { |
zgu@3900 | 37 | private: |
zgu@3900 | 38 | // circular buffer. This buffer contains recorders to be merged into global |
zgu@3900 | 39 | // snaphsot. |
zgu@3900 | 40 | // Each slot holds a linked list of memory recorders, that contains one |
zgu@3900 | 41 | // generation of memory data. |
zgu@3900 | 42 | MemRecorder* _gen[MAX_GENERATIONS]; |
zgu@3900 | 43 | int _head, _tail; // head and tail pointers to above circular buffer |
zgu@3900 | 44 | |
zgu@3900 | 45 | bool _has_error; |
zgu@3900 | 46 | |
zgu@3900 | 47 | public: |
zgu@3900 | 48 | MemTrackWorker(); |
zgu@3900 | 49 | ~MemTrackWorker(); |
zgu@3900 | 50 | _NOINLINE_ void* operator new(size_t size); |
zgu@3900 | 51 | _NOINLINE_ void* operator new(size_t size, const std::nothrow_t& nothrow_constant); |
zgu@3900 | 52 | |
zgu@3900 | 53 | void start(); |
zgu@3900 | 54 | void run(); |
zgu@3900 | 55 | |
zgu@3900 | 56 | inline bool has_error() const { return _has_error; } |
zgu@3900 | 57 | |
zgu@3900 | 58 | // task at synchronization point |
zgu@3900 | 59 | void at_sync_point(MemRecorder* pending_recorders); |
zgu@3900 | 60 | |
zgu@3900 | 61 | // for debugging purpose, they are not thread safe. |
zgu@3900 | 62 | NOT_PRODUCT(static int count_recorder(const MemRecorder* head);) |
zgu@3900 | 63 | NOT_PRODUCT(int count_pending_recorders() const;) |
zgu@3900 | 64 | |
zgu@3900 | 65 | NOT_PRODUCT(int _sync_point_count;) |
zgu@3900 | 66 | NOT_PRODUCT(int _merge_count;) |
zgu@3900 | 67 | NOT_PRODUCT(int _last_gen_in_use;) |
zgu@3900 | 68 | |
zgu@3900 | 69 | inline int generations_in_use() const { |
zgu@3935 | 70 | return (_tail >= _head ? (_tail - _head + 1) : (MAX_GENERATIONS - (_head - _tail) + 1)); |
zgu@3900 | 71 | } |
zgu@3900 | 72 | }; |
zgu@3900 | 73 | |
zgu@3900 | 74 | #endif // SHARE_VM_SERVICES_MEM_TRACK_WORKER_HPP |