| /* |
| * Copyright (c) 2011, 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_GC_IMPLEMENTATION_SHARED_HSPACECOUNTERS_HPP |
| #define SHARE_VM_GC_IMPLEMENTATION_SHARED_HSPACECOUNTERS_HPP |
| |
| #include "utilities/macros.hpp" |
| #include "gc_implementation/shared/generationCounters.hpp" |
| #include "memory/generation.hpp" |
| #include "runtime/perfData.hpp" |
| |
| // A HSpaceCounter is a holder class for performance counters |
| // that track a collections (logical spaces) in a heap; |
| |
| class HeapSpaceUsedHelper; |
| class G1SpaceMonitoringSupport; |
| |
| class HSpaceCounters: public CHeapObj<mtGC> { |
| friend class VMStructs; |
| |
| private: |
| PerfVariable* _capacity; |
| PerfVariable* _used; |
| |
| // Constant PerfData types don't need to retain a reference. |
| // However, it's a good idea to document them here. |
| |
| char* _name_space; |
| |
| public: |
| |
| HSpaceCounters(const char* name, int ordinal, size_t max_size, |
| size_t initial_capacity, GenerationCounters* gc); |
| |
| ~HSpaceCounters() { |
| if (_name_space != NULL) FREE_C_HEAP_ARRAY(char, _name_space, mtGC); |
| } |
| |
| inline void update_capacity(size_t v) { |
| _capacity->set_value(v); |
| } |
| |
| inline void update_used(size_t v) { |
| _used->set_value(v); |
| } |
| |
| debug_only( |
| // for security reasons, we do not allow arbitrary reads from |
| // the counters as they may live in shared memory. |
| jlong used() { |
| return _used->get_value(); |
| } |
| jlong capacity() { |
| return _used->get_value(); |
| } |
| ) |
| |
| inline void update_all(size_t capacity, size_t used) { |
| update_capacity(capacity); |
| update_used(used); |
| } |
| |
| const char* name_space() const { return _name_space; } |
| }; |
| #endif // SHARE_VM_GC_IMPLEMENTATION_SHARED_HSPACECOUNTERS_HPP |