Mercurial > hg > truffle
annotate src/share/vm/services/mallocTracker.cpp @ 21183:565d7dbae77c
LIRGenerator: replace doBlockStart/doBlockEnd with an AutoCloseable.
author | Josef Eisl <josef.eisl@jku.at> |
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date | Mon, 20 Apr 2015 11:16:15 +0200 |
parents | 787c9c28311f |
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rev | line source |
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20360 | 1 /* |
2 * Copyright (c) 2014, 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 #include "precompiled.hpp" | |
25 | |
26 #include "runtime/atomic.hpp" | |
27 #include "runtime/atomic.inline.hpp" | |
28 #include "services/mallocSiteTable.hpp" | |
29 #include "services/mallocTracker.hpp" | |
30 #include "services/mallocTracker.inline.hpp" | |
31 #include "services/memTracker.hpp" | |
32 | |
33 size_t MallocMemorySummary::_snapshot[CALC_OBJ_SIZE_IN_TYPE(MallocMemorySnapshot, size_t)]; | |
34 | |
35 // Total malloc'd memory amount | |
36 size_t MallocMemorySnapshot::total() const { | |
37 size_t amount = 0; | |
38 for (int index = 0; index < mt_number_of_types; index ++) { | |
39 amount += _malloc[index].malloc_size(); | |
40 } | |
41 amount += _tracking_header.size() + total_arena(); | |
42 return amount; | |
43 } | |
44 | |
45 // Total malloc'd memory used by arenas | |
46 size_t MallocMemorySnapshot::total_arena() const { | |
47 size_t amount = 0; | |
48 for (int index = 0; index < mt_number_of_types; index ++) { | |
49 amount += _malloc[index].arena_size(); | |
50 } | |
51 return amount; | |
52 } | |
53 | |
54 // Make adjustment by subtracting chunks used by arenas | |
55 // from total chunks to get total free chunck size | |
56 void MallocMemorySnapshot::make_adjustment() { | |
57 size_t arena_size = total_arena(); | |
58 int chunk_idx = NMTUtil::flag_to_index(mtChunk); | |
59 _malloc[chunk_idx].record_free(arena_size); | |
60 } | |
61 | |
62 | |
63 void MallocMemorySummary::initialize() { | |
64 assert(sizeof(_snapshot) >= sizeof(MallocMemorySnapshot), "Sanity Check"); | |
65 // Uses placement new operator to initialize static area. | |
66 ::new ((void*)_snapshot)MallocMemorySnapshot(); | |
67 } | |
68 | |
69 void MallocHeader::release() const { | |
70 // Tracking already shutdown, no housekeeping is needed anymore | |
71 if (MemTracker::tracking_level() <= NMT_minimal) return; | |
72 | |
73 MallocMemorySummary::record_free(size(), flags()); | |
74 MallocMemorySummary::record_free_malloc_header(sizeof(MallocHeader)); | |
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75 if (MemTracker::tracking_level() == NMT_detail) { |
20360 | 76 MallocSiteTable::deallocation_at(size(), _bucket_idx, _pos_idx); |
77 } | |
78 } | |
79 | |
80 bool MallocHeader::record_malloc_site(const NativeCallStack& stack, size_t size, | |
81 size_t* bucket_idx, size_t* pos_idx) const { | |
82 bool ret = MallocSiteTable::allocation_at(stack, size, bucket_idx, pos_idx); | |
83 | |
84 // Something went wrong, could be OOM or overflow malloc site table. | |
85 // We want to keep tracking data under OOM circumstance, so transition to | |
86 // summary tracking. | |
87 if (!ret) { | |
88 MemTracker::transition_to(NMT_summary); | |
89 } | |
90 return ret; | |
91 } | |
92 | |
93 bool MallocHeader::get_stack(NativeCallStack& stack) const { | |
94 return MallocSiteTable::access_stack(stack, _bucket_idx, _pos_idx); | |
95 } | |
96 | |
97 bool MallocTracker::initialize(NMT_TrackingLevel level) { | |
98 if (level >= NMT_summary) { | |
99 MallocMemorySummary::initialize(); | |
100 } | |
101 | |
102 if (level == NMT_detail) { | |
103 return MallocSiteTable::initialize(); | |
104 } | |
105 return true; | |
106 } | |
107 | |
108 bool MallocTracker::transition(NMT_TrackingLevel from, NMT_TrackingLevel to) { | |
109 assert(from != NMT_off, "Can not transition from off state"); | |
110 assert(to != NMT_off, "Can not transition to off state"); | |
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111 assert (from != NMT_minimal, "cannot transition from minimal state"); |
20360 | 112 |
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113 if (from == NMT_detail) { |
20360 | 114 assert(to == NMT_minimal || to == NMT_summary, "Just check"); |
115 MallocSiteTable::shutdown(); | |
116 } | |
117 return true; | |
118 } | |
119 | |
120 // Record a malloc memory allocation | |
121 void* MallocTracker::record_malloc(void* malloc_base, size_t size, MEMFLAGS flags, | |
122 const NativeCallStack& stack, NMT_TrackingLevel level) { | |
123 void* memblock; // the address for user data | |
124 MallocHeader* header = NULL; | |
125 | |
126 if (malloc_base == NULL) { | |
127 return NULL; | |
128 } | |
129 | |
130 // Uses placement global new operator to initialize malloc header | |
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131 |
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132 if (level == NMT_off) { |
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133 return malloc_base; |
20360 | 134 } |
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135 |
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136 header = ::new (malloc_base)MallocHeader(size, flags, stack, level); |
20360 | 137 memblock = (void*)((char*)malloc_base + sizeof(MallocHeader)); |
138 | |
139 // The alignment check: 8 bytes alignment for 32 bit systems. | |
140 // 16 bytes alignment for 64-bit systems. | |
141 assert(((size_t)memblock & (sizeof(size_t) * 2 - 1)) == 0, "Alignment check"); | |
142 | |
143 #ifdef ASSERT | |
144 if (level > NMT_minimal) { | |
145 // Read back | |
146 assert(get_size(memblock) == size, "Wrong size"); | |
147 assert(get_flags(memblock) == flags, "Wrong flags"); | |
148 } | |
149 #endif | |
150 | |
151 return memblock; | |
152 } | |
153 | |
154 void* MallocTracker::record_free(void* memblock) { | |
155 // Never turned on | |
156 if (MemTracker::tracking_level() == NMT_off || | |
157 memblock == NULL) { | |
158 return memblock; | |
159 } | |
160 MallocHeader* header = malloc_header(memblock); | |
161 header->release(); | |
162 | |
163 return (void*)header; | |
164 } | |
165 | |
166 |