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1 /* |
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2 * Copyright (c) 2003, 2015, Oracle and/or its affiliates. All rights reserved. |
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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4 * |
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5 * This code is free software; you can redistribute it and/or modify it |
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6 * under the terms of the GNU General Public License version 2 only, as |
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7 * published by the Free Software Foundation. |
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8 * |
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9 * This code is distributed in the hope that it will be useful, but WITHOUT |
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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12 * version 2 for more details (a copy is included in the LICENSE file that |
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13 * accompanied this code). |
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14 * |
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15 * You should have received a copy of the GNU General Public License version |
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16 * 2 along with this work; if not, write to the Free Software Foundation, |
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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18 * |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
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22 * |
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23 */ |
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24 |
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25 #ifndef SHARE_VM_GC_PARALLEL_ASPSOLDGEN_HPP |
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26 #define SHARE_VM_GC_PARALLEL_ASPSOLDGEN_HPP |
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27 |
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28 #include "gc/parallel/mutableSpace.hpp" |
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29 #include "gc/parallel/objectStartArray.hpp" |
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30 #include "gc/parallel/psOldGen.hpp" |
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31 #include "gc/parallel/psVirtualspace.hpp" |
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32 #include "gc/parallel/spaceCounters.hpp" |
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33 #include "gc/shared/generationCounters.hpp" |
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34 |
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35 class ASPSOldGen : public PSOldGen { |
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36 friend class VMStructs; |
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37 size_t _gen_size_limit; // Largest size the generation's reserved size |
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38 // can grow. |
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39 public: |
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40 ASPSOldGen(size_t initial_byte_size, |
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41 size_t minimum_byte_size, |
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42 size_t byte_size_limit, |
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43 const char* gen_name, int level); |
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44 ASPSOldGen(PSVirtualSpace* vs, |
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45 size_t initial_byte_size, |
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46 size_t minimum_byte_size, |
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47 size_t byte_size_limit, |
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48 const char* gen_name, int level); |
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49 size_t gen_size_limit() { return _gen_size_limit; } |
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50 size_t max_gen_size() { return _reserved.byte_size(); } |
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51 void set_gen_size_limit(size_t v) { _gen_size_limit = v; } |
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52 |
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53 virtual void initialize_work(const char* perf_data_name, int level); |
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54 |
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55 // After a shrink or expand reset the generation |
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56 void reset_after_change(); |
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57 |
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58 // Return number of bytes that the virtual space in the generation is willing |
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59 // to expand or contract. The results from these methods should feed into the |
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60 // decisions about adjusting the virtual space. |
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61 size_t available_for_expansion(); |
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62 size_t available_for_contraction(); |
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63 |
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64 // Accessors |
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65 void set_reserved(MemRegion v) { _reserved = v; } |
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66 |
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67 // Debugging support |
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68 virtual const char* short_name() const { return "ASPSOldGen"; } |
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69 }; |
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70 |
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71 #endif // SHARE_VM_GC_PARALLEL_ASPSOLDGEN_HPP |