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698fba94ef
Rename INCLUDE_ALTERNATE_GCS to INCLUDE_ALL_GCS and replace SERIALGC with INCLUDE_ALL_GCS. Reviewed-by: coleenp, stefank
114 lines
3.3 KiB
C++
114 lines
3.3 KiB
C++
/*
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* Copyright (c) 2002, 2012, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*
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*/
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#ifndef SHARE_VM_GC_IMPLEMENTATION_SHARED_GSPACECOUNTERS_HPP
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#define SHARE_VM_GC_IMPLEMENTATION_SHARED_GSPACECOUNTERS_HPP
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#include "utilities/macros.hpp"
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#if INCLUDE_ALL_GCS
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#include "gc_implementation/shared/generationCounters.hpp"
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#include "memory/generation.hpp"
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#include "runtime/perfData.hpp"
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#endif // INCLUDE_ALL_GCS
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// A GSpaceCounter is a holder class for performance counters
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// that track a space;
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class GSpaceCounters: public CHeapObj<mtGC> {
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friend class VMStructs;
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private:
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PerfVariable* _capacity;
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PerfVariable* _used;
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// Constant PerfData types don't need to retain a reference.
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// However, it's a good idea to document them here.
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// PerfConstant* _size;
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Generation* _gen;
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char* _name_space;
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public:
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GSpaceCounters(const char* name, int ordinal, size_t max_size, Generation* g,
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GenerationCounters* gc, bool sampled=true);
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~GSpaceCounters() {
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if (_name_space != NULL) FREE_C_HEAP_ARRAY(char, _name_space, mtGC);
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}
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inline void update_capacity() {
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_capacity->set_value(_gen->capacity());
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}
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inline void update_used() {
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_used->set_value(_gen->used());
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}
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// special version of update_used() to allow the used value to be
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// passed as a parameter. This method can can be used in cases were
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// the utilization is already known and/or when the _gen->used()
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// method is known to be expensive and we want to avoid unnecessary
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// calls to it.
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//
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inline void update_used(size_t used) {
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_used->set_value(used);
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}
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inline void inc_used(size_t size) {
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_used->inc(size);
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}
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debug_only(
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// for security reasons, we do not allow arbitrary reads from
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// the counters as they may live in shared memory.
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jlong used() {
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return _used->get_value();
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}
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jlong capacity() {
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return _used->get_value();
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}
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)
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inline void update_all() {
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update_used();
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update_capacity();
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}
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const char* name_space() const { return _name_space; }
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};
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class GenerationUsedHelper : public PerfLongSampleHelper {
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private:
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Generation* _gen;
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public:
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GenerationUsedHelper(Generation* g) : _gen(g) { }
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inline jlong take_sample() {
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return _gen->used();
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}
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};
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#endif // SHARE_VM_GC_IMPLEMENTATION_SHARED_GSPACECOUNTERS_HPP
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