Mercurial > hg > truffle
annotate src/share/vm/services/memRecorder.cpp @ 7421:ad5dd04754ee
8005031: Some cleanup in c2 to prepare for incremental inlining support
Summary: collection of small changes to prepare for incremental inlining.
Reviewed-by: twisti, kvn
author | roland |
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date | Tue, 18 Dec 2012 14:55:25 +0100 |
parents | 716c64bda5ba |
children | ecd24264898b |
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 #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() { | |
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34 MemPointerRecord* itr_cur = (MemPointerRecord*)_itr.current(); |
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35 if (itr_cur == NULL) { |
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36 return itr_cur; |
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37 } |
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38 |
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39 MemPointerRecord* itr_next = (MemPointerRecord*)_itr.next(); |
6197 | 40 |
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41 // don't collapse virtual memory records |
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42 while (itr_next != NULL && !itr_cur->is_vm_pointer() && |
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43 !itr_next->is_vm_pointer() && |
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44 same_kind(itr_cur, itr_next)) { |
6197 | 45 itr_cur = itr_next; |
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46 itr_next = (MemPointerRecord*)_itr.next(); |
6197 | 47 } |
48 | |
49 return itr_cur; | |
50 } | |
51 | |
52 | |
6231 | 53 volatile jint MemRecorder::_instance_count = 0; |
6197 | 54 |
55 MemRecorder::MemRecorder() { | |
56 assert(MemTracker::is_on(), "Native memory tracking is off"); | |
6231 | 57 Atomic::inc(&_instance_count); |
6197 | 58 debug_only(set_generation();) |
59 | |
60 if (MemTracker::track_callsite()) { | |
61 _pointer_records = new (std::nothrow)FixedSizeMemPointerArray<SeqMemPointerRecordEx, | |
62 DEFAULT_RECORDER_PTR_ARRAY_SIZE>(); | |
63 } else { | |
64 _pointer_records = new (std::nothrow)FixedSizeMemPointerArray<SeqMemPointerRecord, | |
65 DEFAULT_RECORDER_PTR_ARRAY_SIZE>(); | |
66 } | |
67 _next = NULL; | |
68 | |
69 | |
70 if (_pointer_records != NULL) { | |
71 // recode itself | |
72 record((address)this, (MemPointerRecord::malloc_tag()|mtNMT|otNMTRecorder), | |
73 sizeof(MemRecorder), CALLER_PC); | |
74 record((address)_pointer_records, (MemPointerRecord::malloc_tag()|mtNMT|otNMTRecorder), | |
75 _pointer_records->instance_size(),CURRENT_PC); | |
76 } | |
77 } | |
78 | |
79 MemRecorder::~MemRecorder() { | |
80 if (_pointer_records != NULL) { | |
81 if (MemTracker::is_on()) { | |
82 MemTracker::record_free((address)_pointer_records, mtNMT); | |
83 MemTracker::record_free((address)this, mtNMT); | |
84 } | |
85 delete _pointer_records; | |
86 } | |
87 if (_next != NULL) { | |
88 delete _next; | |
89 } | |
90 | |
91 Atomic::dec(&_instance_count); | |
92 } | |
93 | |
94 // Sorting order: | |
95 // 1. memory block address | |
96 // 2. mem pointer record tags | |
97 // 3. sequence number | |
98 int MemRecorder::sort_record_fn(const void* e1, const void* e2) { | |
99 const MemPointerRecord* p1 = (const MemPointerRecord*)e1; | |
100 const MemPointerRecord* p2 = (const MemPointerRecord*)e2; | |
101 int delta = UNSIGNED_COMPARE(p1->addr(), p2->addr()); | |
102 if (delta == 0) { | |
103 int df = UNSIGNED_COMPARE((p1->flags() & MemPointerRecord::tag_masks), | |
104 (p2->flags() & MemPointerRecord::tag_masks)); | |
105 if (df == 0) { | |
106 assert(p1->seq() != p2->seq(), "dup seq"); | |
107 return p1->seq() - p2->seq(); | |
108 } else { | |
109 return df; | |
110 } | |
111 } else { | |
112 return delta; | |
113 } | |
114 } | |
115 | |
116 bool MemRecorder::record(address p, MEMFLAGS flags, size_t size, address pc) { | |
117 #ifdef ASSERT | |
118 if (MemPointerRecord::is_virtual_memory_record(flags)) { | |
119 assert((flags & MemPointerRecord::tag_masks) != 0, "bad virtual memory record"); | |
120 } else { | |
121 assert((flags & MemPointerRecord::tag_masks) == MemPointerRecord::malloc_tag() || | |
122 (flags & MemPointerRecord::tag_masks) == MemPointerRecord::free_tag() || | |
123 IS_ARENA_OBJ(flags), | |
124 "bad malloc record"); | |
125 } | |
126 // a recorder should only hold records within the same generation | |
127 unsigned long cur_generation = SequenceGenerator::current_generation(); | |
128 assert(cur_generation == _generation, | |
129 "this thread did not enter sync point"); | |
130 #endif | |
131 | |
132 if (MemTracker::track_callsite()) { | |
133 SeqMemPointerRecordEx ap(p, flags, size, pc); | |
134 debug_only(check_dup_seq(ap.seq());) | |
135 return _pointer_records->append(&ap); | |
136 } else { | |
137 SeqMemPointerRecord ap(p, flags, size); | |
138 debug_only(check_dup_seq(ap.seq());) | |
139 return _pointer_records->append(&ap); | |
140 } | |
141 } | |
142 | |
143 // iterator for alloc pointers | |
144 SequencedRecordIterator MemRecorder::pointer_itr() { | |
145 assert(_pointer_records != NULL, "just check"); | |
146 _pointer_records->sort((FN_SORT)sort_record_fn); | |
147 return SequencedRecordIterator(_pointer_records); | |
148 } | |
149 | |
150 | |
151 #ifdef ASSERT | |
152 void MemRecorder::set_generation() { | |
153 _generation = SequenceGenerator::current_generation(); | |
154 } | |
155 | |
156 void MemRecorder::check_dup_seq(jint seq) const { | |
157 MemPointerArrayIteratorImpl itr(_pointer_records); | |
158 MemPointerRecord* rc = (MemPointerRecord*)itr.current(); | |
159 while (rc != NULL) { | |
160 assert(rc->seq() != seq, "dup seq"); | |
161 rc = (MemPointerRecord*)itr.next(); | |
162 } | |
163 } | |
164 | |
165 #endif |