Mercurial > hg > truffle
annotate src/share/vm/services/memTrackWorker.hpp @ 9093:cd22923e7ca7
removed unnecessary code
author | Doug Simon <doug.simon@oracle.com> |
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date | Fri, 12 Apr 2013 21:35:27 +0200 |
parents | 4102b59539ce |
children | 35f8765422b9 |
rev | line source |
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6197 | 1 /* |
2 * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved. | |
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | |
20 * or visit www.oracle.com if you need additional information or have any | |
21 * questions. | |
22 * | |
23 */ | |
24 | |
25 #ifndef SHARE_VM_SERVICES_MEM_TRACK_WORKER_HPP | |
26 #define SHARE_VM_SERVICES_MEM_TRACK_WORKER_HPP | |
27 | |
28 #include "memory/allocation.hpp" | |
29 #include "runtime/thread.hpp" | |
30 #include "services/memRecorder.hpp" | |
31 | |
32 // Maximum MAX_GENERATIONS generation data can be tracked. | |
33 #define MAX_GENERATIONS 512 | |
34 | |
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35 class GenerationData : public _ValueObj { |
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36 private: |
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37 int _number_of_classes; |
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38 MemRecorder* _recorder_list; |
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39 |
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40 public: |
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41 GenerationData(): _number_of_classes(0), _recorder_list(NULL) { } |
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42 |
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43 inline int number_of_classes() const { return _number_of_classes; } |
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44 inline void set_number_of_classes(long num) { _number_of_classes = num; } |
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45 |
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46 inline MemRecorder* next_recorder() { |
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47 if (_recorder_list == NULL) { |
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48 return NULL; |
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49 } else { |
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50 MemRecorder* tmp = _recorder_list; |
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51 _recorder_list = _recorder_list->next(); |
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52 return tmp; |
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53 } |
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54 } |
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55 |
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56 inline bool has_more_recorder() const { |
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57 return (_recorder_list != NULL); |
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58 } |
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59 |
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60 // add recorders to this generation |
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61 void add_recorders(MemRecorder* head) { |
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62 if (head != NULL) { |
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63 if (_recorder_list == NULL) { |
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64 _recorder_list = head; |
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65 } else { |
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66 MemRecorder* tmp = _recorder_list; |
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67 for (; tmp->next() != NULL; tmp = tmp->next()); |
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68 tmp->set_next(head); |
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69 } |
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70 } |
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71 } |
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72 |
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73 void reset(); |
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74 |
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75 NOT_PRODUCT(MemRecorder* peek() const { return _recorder_list; }) |
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76 }; |
6197 | 77 |
78 class MemTrackWorker : public NamedThread { | |
79 private: | |
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80 // circular buffer. This buffer contains generation data to be merged into global |
6197 | 81 // snaphsot. |
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82 // Each slot holds a generation |
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83 GenerationData _gen[MAX_GENERATIONS]; |
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84 int _head, _tail; // head and tail pointers to above circular buffer |
6197 | 85 |
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86 bool _has_error; |
6197 | 87 |
88 public: | |
89 MemTrackWorker(); | |
90 ~MemTrackWorker(); | |
91 _NOINLINE_ void* operator new(size_t size); | |
92 _NOINLINE_ void* operator new(size_t size, const std::nothrow_t& nothrow_constant); | |
93 | |
94 void start(); | |
95 void run(); | |
96 | |
97 inline bool has_error() const { return _has_error; } | |
98 | |
99 // task at synchronization point | |
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100 void at_sync_point(MemRecorder* pending_recorders, int number_of_classes); |
6197 | 101 |
102 // for debugging purpose, they are not thread safe. | |
103 NOT_PRODUCT(static int count_recorder(const MemRecorder* head);) | |
104 NOT_PRODUCT(int count_pending_recorders() const;) | |
105 | |
106 NOT_PRODUCT(int _sync_point_count;) | |
107 NOT_PRODUCT(int _merge_count;) | |
108 NOT_PRODUCT(int _last_gen_in_use;) | |
109 | |
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110 // how many generations are queued |
6197 | 111 inline int generations_in_use() const { |
6231 | 112 return (_tail >= _head ? (_tail - _head + 1) : (MAX_GENERATIONS - (_head - _tail) + 1)); |
6197 | 113 } |
114 }; | |
115 | |
116 #endif // SHARE_VM_SERVICES_MEM_TRACK_WORKER_HPP |