Mercurial > hg > truffle
diff src/share/vm/gc_implementation/shared/hSpaceCounters.hpp @ 3289:b52782ae3880
6946417: G1: Java VisualVM does not support G1 properly.
Summary: Added counters for jstat
Reviewed-by: tonyp, jwilhelm, stefank, ysr, johnc
author | jmasa |
---|---|
date | Thu, 21 Apr 2011 10:23:44 -0700 |
parents | |
children | d2a62e0f25eb |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/share/vm/gc_implementation/shared/hSpaceCounters.hpp Thu Apr 21 10:23:44 2011 -0700 @@ -0,0 +1,87 @@ +/* + * Copyright (c) 2011, 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 + +#ifndef SERIALGC +#include "gc_implementation/shared/generationCounters.hpp" +#include "memory/generation.hpp" +#include "runtime/perfData.hpp" +#endif + +// 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 { + 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); + } + + 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