duke@435: /*
duke@435:  * Copyright 2002-2004 Sun Microsystems, Inc.  All Rights Reserved.
duke@435:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
duke@435:  *
duke@435:  * This code is free software; you can redistribute it and/or modify it
duke@435:  * under the terms of the GNU General Public License version 2 only, as
duke@435:  * published by the Free Software Foundation.
duke@435:  *
duke@435:  * This code is distributed in the hope that it will be useful, but WITHOUT
duke@435:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
duke@435:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
duke@435:  * version 2 for more details (a copy is included in the LICENSE file that
duke@435:  * accompanied this code).
duke@435:  *
duke@435:  * You should have received a copy of the GNU General Public License version
duke@435:  * 2 along with this work; if not, write to the Free Software Foundation,
duke@435:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
duke@435:  *
duke@435:  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
duke@435:  * CA 95054 USA or visit www.sun.com if you need additional information or
duke@435:  * have any questions.
duke@435:  *
duke@435:  */
duke@435: 
duke@435: // A GenerationCounter is a holder class for performance counters
duke@435: // that track a generation
duke@435: 
duke@435: class GenerationCounters: public CHeapObj {
duke@435:   friend class VMStructs;
duke@435: 
duke@435:  protected:
duke@435:   PerfVariable*      _current_size;
duke@435:   VirtualSpace*      _virtual_space;
duke@435: 
duke@435:   // Constant PerfData types don't need to retain a reference.
duke@435:   // However, it's a good idea to document them here.
duke@435:   // PerfStringConstant*     _name;
duke@435:   // PerfConstant*           _min_size;
duke@435:   // PerfConstant*           _max_size;
duke@435:   // PerfConstant*           _spaces;
duke@435: 
duke@435:   char*              _name_space;
duke@435: 
duke@435:   // This constructor is only meant for use with the PSGenerationCounters
duke@435:   // constructor.  The need for such an constructor should be eliminated
duke@435:   // when VirtualSpace and PSVirtualSpace are unified.
duke@435:   GenerationCounters() : _name_space(NULL), _current_size(NULL), _virtual_space(NULL) {}
duke@435:  public:
duke@435: 
duke@435:   GenerationCounters(const char* name, int ordinal, int spaces,
duke@435:                      VirtualSpace* v);
duke@435: 
duke@435:   ~GenerationCounters() {
duke@435:     if (_name_space != NULL) FREE_C_HEAP_ARRAY(char, _name_space);
duke@435:   }
duke@435: 
duke@435:   virtual void update_all() {
duke@435:     _current_size->set_value(_virtual_space->committed_size());
duke@435:   }
duke@435: 
duke@435:   const char* name_space() const        { return _name_space; }
duke@435: };