Mercurial > hg > graal-compiler
view src/share/vm/services/memTrackWorker.hpp @ 12141:cc56f122f3f7
8023720: (hotspot) setjmp/longjmp changes the process signal mask on OS X
Reviewed-by: dholmes, rbackman
author | sla |
---|---|
date | Thu, 29 Aug 2013 11:05:55 +0200 |
parents | b80cc96882f7 |
children | 9758d9f36299 |
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/* * 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 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); _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, 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