diff -r 41d12a329ec7 -r 983a1ebcc848 hotspot/src/share/vm/services/memTrackWorker.hpp --- a/hotspot/src/share/vm/services/memTrackWorker.hpp Tue Aug 12 14:04:21 2014 -0700 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,118 +0,0 @@ -/* - * Copyright (c) 2013, 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 GenerationData VALUE_OBJ_CLASS_SPEC { - private: - int _number_of_classes; - MemRecorder* _recorder_list; - - public: - GenerationData(): _number_of_classes(0), _recorder_list(NULL) { } - - inline int number_of_classes() const { return _number_of_classes; } - inline void set_number_of_classes(long num) { _number_of_classes = num; } - - inline MemRecorder* next_recorder() { - if (_recorder_list == NULL) { - return NULL; - } else { - MemRecorder* tmp = _recorder_list; - _recorder_list = _recorder_list->next(); - return tmp; - } - } - - inline bool has_more_recorder() const { - return (_recorder_list != NULL); - } - - // add recorders to this generation - void add_recorders(MemRecorder* head) { - if (head != NULL) { - if (_recorder_list == NULL) { - _recorder_list = head; - } else { - MemRecorder* tmp = _recorder_list; - for (; tmp->next() != NULL; tmp = tmp->next()); - tmp->set_next(head); - } - } - } - - void reset(); - - NOT_PRODUCT(MemRecorder* peek() const { return _recorder_list; }) -}; - -class MemTrackWorker : public NamedThread { - private: - // circular buffer. This buffer contains generation data to be merged into global - // snaphsot. - // Each slot holds a generation - GenerationData _gen[MAX_GENERATIONS]; - int _head, _tail; // head and tail pointers to above circular buffer - - bool _has_error; - - MemSnapshot* _snapshot; - - public: - MemTrackWorker(MemSnapshot* snapshot); - ~MemTrackWorker(); - _NOINLINE_ void* operator new(size_t size) throw(); - _NOINLINE_ void* operator new(size_t size, const std::nothrow_t& nothrow_constant) throw(); - - void start(); - void run(); - - inline bool has_error() const { return _has_error; } - - // task at synchronization point - void at_sync_point(MemRecorder* pending_recorders, int number_of_classes); - - // 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;) - - // how many generations are queued - 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