Mercurial > hg > truffle
annotate src/share/vm/services/mallocTracker.cpp @ 20553:417e3b8d04c5
8059100: SIGSEGV VirtualMemoryTracker::remove_released_region
Summary: Disallow increasing native memory tracking level
Reviewed-by: hseigel, ctornqvi, gtriantafill
| author | coleenp |
|---|---|
| date | Fri, 10 Oct 2014 19:36:12 +0000 |
| parents | 1ff288f0dae4 |
| children | 787c9c28311f |
| rev | line source |
|---|---|
| 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)); | |
| 75 if (tracking_level() == NMT_detail) { | |
| 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"); | |
|
20553
417e3b8d04c5
8059100: SIGSEGV VirtualMemoryTracker::remove_released_region
coleenp
parents:
20509
diff
changeset
|
111 assert (from != NMT_minimal, "cannot transition from minimal state"); |
| 20360 | 112 |
|
20553
417e3b8d04c5
8059100: SIGSEGV VirtualMemoryTracker::remove_released_region
coleenp
parents:
20509
diff
changeset
|
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 | |
| 131 switch(level) { | |
| 132 case NMT_off: | |
| 133 return malloc_base; | |
| 134 case NMT_minimal: { | |
| 135 MallocHeader* hdr = ::new (malloc_base) MallocHeader(); | |
| 136 break; | |
| 137 } | |
| 138 case NMT_summary: { | |
|
20509
1ff288f0dae4
8058818: Allocation of more then 1G of memory using Unsafe.allocateMemory is still causing a fatal error on 32bit platforms
coleenp
parents:
20360
diff
changeset
|
139 assert(size <= MAX_MALLOC_SIZE, "malloc size overrun for NMT"); |
| 20360 | 140 header = ::new (malloc_base) MallocHeader(size, flags); |
| 141 break; | |
| 142 } | |
| 143 case NMT_detail: { | |
|
20509
1ff288f0dae4
8058818: Allocation of more then 1G of memory using Unsafe.allocateMemory is still causing a fatal error on 32bit platforms
coleenp
parents:
20360
diff
changeset
|
144 assert(size <= MAX_MALLOC_SIZE, "malloc size overrun for NMT"); |
| 20360 | 145 header = ::new (malloc_base) MallocHeader(size, flags, stack); |
| 146 break; | |
| 147 } | |
| 148 default: | |
| 149 ShouldNotReachHere(); | |
| 150 } | |
| 151 memblock = (void*)((char*)malloc_base + sizeof(MallocHeader)); | |
| 152 | |
| 153 // The alignment check: 8 bytes alignment for 32 bit systems. | |
| 154 // 16 bytes alignment for 64-bit systems. | |
| 155 assert(((size_t)memblock & (sizeof(size_t) * 2 - 1)) == 0, "Alignment check"); | |
| 156 | |
| 157 // Sanity check | |
| 158 assert(get_memory_tracking_level(memblock) == level, | |
| 159 "Wrong tracking level"); | |
| 160 | |
| 161 #ifdef ASSERT | |
| 162 if (level > NMT_minimal) { | |
| 163 // Read back | |
| 164 assert(get_size(memblock) == size, "Wrong size"); | |
| 165 assert(get_flags(memblock) == flags, "Wrong flags"); | |
| 166 } | |
| 167 #endif | |
| 168 | |
| 169 return memblock; | |
| 170 } | |
| 171 | |
| 172 void* MallocTracker::record_free(void* memblock) { | |
| 173 // Never turned on | |
| 174 if (MemTracker::tracking_level() == NMT_off || | |
| 175 memblock == NULL) { | |
| 176 return memblock; | |
| 177 } | |
| 178 MallocHeader* header = malloc_header(memblock); | |
| 179 header->release(); | |
| 180 | |
| 181 return (void*)header; | |
| 182 } | |
| 183 | |
| 184 |