Mercurial > hg > graal-compiler
comparison src/share/vm/services/memRecorder.cpp @ 6197:d2a62e0f25eb
6995781: Native Memory Tracking (Phase 1)
7151532: DCmd for hotspot native memory tracking
Summary: Implementation of native memory tracking phase 1, which tracks VM native memory usage, and related DCmd
Reviewed-by: acorn, coleenp, fparain
author | zgu |
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date | Thu, 28 Jun 2012 17:03:16 -0400 |
parents | |
children | 7e5976e66c62 |
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6174:74533f63b116 | 6197:d2a62e0f25eb |
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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 #include "precompiled.hpp" | |
26 | |
27 #include "runtime/atomic.hpp" | |
28 #include "services/memBaseline.hpp" | |
29 #include "services/memRecorder.hpp" | |
30 #include "services/memPtr.hpp" | |
31 #include "services/memTracker.hpp" | |
32 | |
33 MemPointer* SequencedRecordIterator::next_record() { | |
34 MemPointer* itr_cur = _itr.current(); | |
35 if (itr_cur == NULL) return NULL; | |
36 MemPointer* itr_next = _itr.next(); | |
37 | |
38 while (itr_next != NULL && | |
39 same_kind((MemPointerRecord*)itr_cur, (MemPointerRecord*)itr_next)) { | |
40 itr_cur = itr_next; | |
41 itr_next = _itr.next(); | |
42 } | |
43 | |
44 return itr_cur; | |
45 } | |
46 | |
47 | |
48 debug_only(volatile jint MemRecorder::_instance_count = 0;) | |
49 | |
50 MemRecorder::MemRecorder() { | |
51 assert(MemTracker::is_on(), "Native memory tracking is off"); | |
52 debug_only(Atomic::inc(&_instance_count);) | |
53 debug_only(set_generation();) | |
54 | |
55 if (MemTracker::track_callsite()) { | |
56 _pointer_records = new (std::nothrow)FixedSizeMemPointerArray<SeqMemPointerRecordEx, | |
57 DEFAULT_RECORDER_PTR_ARRAY_SIZE>(); | |
58 } else { | |
59 _pointer_records = new (std::nothrow)FixedSizeMemPointerArray<SeqMemPointerRecord, | |
60 DEFAULT_RECORDER_PTR_ARRAY_SIZE>(); | |
61 } | |
62 _next = NULL; | |
63 | |
64 | |
65 if (_pointer_records != NULL) { | |
66 // recode itself | |
67 record((address)this, (MemPointerRecord::malloc_tag()|mtNMT|otNMTRecorder), | |
68 sizeof(MemRecorder), CALLER_PC); | |
69 record((address)_pointer_records, (MemPointerRecord::malloc_tag()|mtNMT|otNMTRecorder), | |
70 _pointer_records->instance_size(),CURRENT_PC); | |
71 } | |
72 } | |
73 | |
74 MemRecorder::~MemRecorder() { | |
75 if (_pointer_records != NULL) { | |
76 if (MemTracker::is_on()) { | |
77 MemTracker::record_free((address)_pointer_records, mtNMT); | |
78 MemTracker::record_free((address)this, mtNMT); | |
79 } | |
80 delete _pointer_records; | |
81 } | |
82 if (_next != NULL) { | |
83 delete _next; | |
84 } | |
85 | |
86 #ifdef ASSERT | |
87 Atomic::dec(&_instance_count); | |
88 #endif | |
89 } | |
90 | |
91 // Sorting order: | |
92 // 1. memory block address | |
93 // 2. mem pointer record tags | |
94 // 3. sequence number | |
95 int MemRecorder::sort_record_fn(const void* e1, const void* e2) { | |
96 const MemPointerRecord* p1 = (const MemPointerRecord*)e1; | |
97 const MemPointerRecord* p2 = (const MemPointerRecord*)e2; | |
98 int delta = UNSIGNED_COMPARE(p1->addr(), p2->addr()); | |
99 if (delta == 0) { | |
100 int df = UNSIGNED_COMPARE((p1->flags() & MemPointerRecord::tag_masks), | |
101 (p2->flags() & MemPointerRecord::tag_masks)); | |
102 if (df == 0) { | |
103 assert(p1->seq() != p2->seq(), "dup seq"); | |
104 return p1->seq() - p2->seq(); | |
105 } else { | |
106 return df; | |
107 } | |
108 } else { | |
109 return delta; | |
110 } | |
111 } | |
112 | |
113 bool MemRecorder::record(address p, MEMFLAGS flags, size_t size, address pc) { | |
114 #ifdef ASSERT | |
115 if (MemPointerRecord::is_virtual_memory_record(flags)) { | |
116 assert((flags & MemPointerRecord::tag_masks) != 0, "bad virtual memory record"); | |
117 } else { | |
118 assert((flags & MemPointerRecord::tag_masks) == MemPointerRecord::malloc_tag() || | |
119 (flags & MemPointerRecord::tag_masks) == MemPointerRecord::free_tag() || | |
120 IS_ARENA_OBJ(flags), | |
121 "bad malloc record"); | |
122 } | |
123 // a recorder should only hold records within the same generation | |
124 unsigned long cur_generation = SequenceGenerator::current_generation(); | |
125 assert(cur_generation == _generation, | |
126 "this thread did not enter sync point"); | |
127 #endif | |
128 | |
129 if (MemTracker::track_callsite()) { | |
130 SeqMemPointerRecordEx ap(p, flags, size, pc); | |
131 debug_only(check_dup_seq(ap.seq());) | |
132 return _pointer_records->append(&ap); | |
133 } else { | |
134 SeqMemPointerRecord ap(p, flags, size); | |
135 debug_only(check_dup_seq(ap.seq());) | |
136 return _pointer_records->append(&ap); | |
137 } | |
138 } | |
139 | |
140 // iterator for alloc pointers | |
141 SequencedRecordIterator MemRecorder::pointer_itr() { | |
142 assert(_pointer_records != NULL, "just check"); | |
143 _pointer_records->sort((FN_SORT)sort_record_fn); | |
144 return SequencedRecordIterator(_pointer_records); | |
145 } | |
146 | |
147 | |
148 #ifdef ASSERT | |
149 void MemRecorder::set_generation() { | |
150 _generation = SequenceGenerator::current_generation(); | |
151 } | |
152 | |
153 void MemRecorder::check_dup_seq(jint seq) const { | |
154 MemPointerArrayIteratorImpl itr(_pointer_records); | |
155 MemPointerRecord* rc = (MemPointerRecord*)itr.current(); | |
156 while (rc != NULL) { | |
157 assert(rc->seq() != seq, "dup seq"); | |
158 rc = (MemPointerRecord*)itr.next(); | |
159 } | |
160 } | |
161 | |
162 #endif |