Fri, 16 Nov 2012 09:05:19 -0500
8003487: NMT: incorrect assertion in VMMemPointerIterator::remove_released_region method (memSnapshot.cpp)
Summary: The assertion is applied to only the region to be released, also performs region integrity checking
Reviewed-by: acorn, coleenp
zgu@3900 | 1 | /* |
zgu@3900 | 2 | * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved. |
zgu@3900 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
zgu@3900 | 4 | * |
zgu@3900 | 5 | * This code is free software; you can redistribute it and/or modify it |
zgu@3900 | 6 | * under the terms of the GNU General Public License version 2 only, as |
zgu@3900 | 7 | * published by the Free Software Foundation. |
zgu@3900 | 8 | * |
zgu@3900 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
zgu@3900 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
zgu@3900 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
zgu@3900 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
zgu@3900 | 13 | * accompanied this code). |
zgu@3900 | 14 | * |
zgu@3900 | 15 | * You should have received a copy of the GNU General Public License version |
zgu@3900 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
zgu@3900 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
zgu@3900 | 18 | * |
zgu@3900 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
zgu@3900 | 20 | * or visit www.oracle.com if you need additional information or have any |
zgu@3900 | 21 | * questions. |
zgu@3900 | 22 | * |
zgu@3900 | 23 | */ |
zgu@3900 | 24 | |
zgu@3900 | 25 | #include "precompiled.hpp" |
zgu@3900 | 26 | #include "runtime/mutexLocker.hpp" |
zgu@3900 | 27 | #include "utilities/decoder.hpp" |
zgu@3900 | 28 | #include "services/memBaseline.hpp" |
zgu@3900 | 29 | #include "services/memPtr.hpp" |
zgu@3900 | 30 | #include "services/memPtrArray.hpp" |
zgu@3900 | 31 | #include "services/memSnapshot.hpp" |
zgu@3900 | 32 | #include "services/memTracker.hpp" |
zgu@3900 | 33 | |
zgu@4248 | 34 | #ifdef ASSERT |
zgu@4248 | 35 | |
zgu@4248 | 36 | void decode_pointer_record(MemPointerRecord* rec) { |
zgu@4248 | 37 | tty->print("Pointer: [" PTR_FORMAT " - " PTR_FORMAT "] size = %d bytes", rec->addr(), |
zgu@4248 | 38 | rec->addr() + rec->size(), (int)rec->size()); |
zgu@4248 | 39 | tty->print(" type = %s", MemBaseline::type2name(FLAGS_TO_MEMORY_TYPE(rec->flags()))); |
zgu@4248 | 40 | if (rec->is_vm_pointer()) { |
zgu@4248 | 41 | if (rec->is_allocation_record()) { |
zgu@4248 | 42 | tty->print_cr(" (reserve)"); |
zgu@4248 | 43 | } else if (rec->is_commit_record()) { |
zgu@4248 | 44 | tty->print_cr(" (commit)"); |
zgu@4248 | 45 | } else if (rec->is_uncommit_record()) { |
zgu@4248 | 46 | tty->print_cr(" (uncommit)"); |
zgu@4248 | 47 | } else if (rec->is_deallocation_record()) { |
zgu@4248 | 48 | tty->print_cr(" (release)"); |
zgu@4248 | 49 | } else { |
zgu@4248 | 50 | tty->print_cr(" (tag)"); |
zgu@4248 | 51 | } |
zgu@4248 | 52 | } else { |
zgu@4274 | 53 | if (rec->is_arena_memory_record()) { |
zgu@4248 | 54 | tty->print_cr(" (arena size)"); |
zgu@4248 | 55 | } else if (rec->is_allocation_record()) { |
zgu@4248 | 56 | tty->print_cr(" (malloc)"); |
zgu@4248 | 57 | } else { |
zgu@4248 | 58 | tty->print_cr(" (free)"); |
zgu@4248 | 59 | } |
zgu@4248 | 60 | } |
zgu@4248 | 61 | if (MemTracker::track_callsite()) { |
zgu@4248 | 62 | char buf[1024]; |
zgu@4248 | 63 | address pc = ((MemPointerRecordEx*)rec)->pc(); |
zgu@4248 | 64 | if (pc != NULL && os::dll_address_to_function_name(pc, buf, sizeof(buf), NULL)) { |
zgu@4248 | 65 | tty->print_cr("\tfrom %s", buf); |
zgu@4248 | 66 | } else { |
zgu@4248 | 67 | tty->print_cr("\tcould not decode pc = " PTR_FORMAT "", pc); |
zgu@4248 | 68 | } |
zgu@4248 | 69 | } |
zgu@4248 | 70 | } |
zgu@4248 | 71 | |
zgu@4248 | 72 | void decode_vm_region_record(VMMemRegion* rec) { |
zgu@4248 | 73 | tty->print("VM Region [" PTR_FORMAT " - " PTR_FORMAT "]", rec->addr(), |
zgu@4248 | 74 | rec->addr() + rec->size()); |
zgu@4248 | 75 | tty->print(" type = %s", MemBaseline::type2name(FLAGS_TO_MEMORY_TYPE(rec->flags()))); |
zgu@4248 | 76 | if (rec->is_allocation_record()) { |
zgu@4248 | 77 | tty->print_cr(" (reserved)"); |
zgu@4248 | 78 | } else if (rec->is_commit_record()) { |
zgu@4248 | 79 | tty->print_cr(" (committed)"); |
zgu@4248 | 80 | } else { |
zgu@4248 | 81 | ShouldNotReachHere(); |
zgu@4248 | 82 | } |
zgu@4248 | 83 | if (MemTracker::track_callsite()) { |
zgu@4248 | 84 | char buf[1024]; |
zgu@4248 | 85 | address pc = ((VMMemRegionEx*)rec)->pc(); |
zgu@4248 | 86 | if (pc != NULL && os::dll_address_to_function_name(pc, buf, sizeof(buf), NULL)) { |
zgu@4248 | 87 | tty->print_cr("\tfrom %s", buf); |
zgu@4248 | 88 | } else { |
zgu@4248 | 89 | tty->print_cr("\tcould not decode pc = " PTR_FORMAT "", pc); |
zgu@4248 | 90 | } |
zgu@4248 | 91 | |
zgu@4248 | 92 | } |
zgu@4248 | 93 | } |
zgu@4248 | 94 | |
zgu@4248 | 95 | #endif |
zgu@4248 | 96 | |
zgu@4193 | 97 | |
zgu@4193 | 98 | bool VMMemPointerIterator::insert_record(MemPointerRecord* rec) { |
zgu@4193 | 99 | VMMemRegionEx new_rec; |
zgu@4193 | 100 | assert(rec->is_allocation_record() || rec->is_commit_record(), |
zgu@4193 | 101 | "Sanity check"); |
zgu@4193 | 102 | if (MemTracker::track_callsite()) { |
zgu@4193 | 103 | new_rec.init((MemPointerRecordEx*)rec); |
zgu@4193 | 104 | } else { |
zgu@4193 | 105 | new_rec.init(rec); |
zgu@4193 | 106 | } |
zgu@4193 | 107 | return insert(&new_rec); |
zgu@4193 | 108 | } |
zgu@4193 | 109 | |
zgu@4193 | 110 | bool VMMemPointerIterator::insert_record_after(MemPointerRecord* rec) { |
zgu@4193 | 111 | VMMemRegionEx new_rec; |
zgu@4193 | 112 | assert(rec->is_allocation_record() || rec->is_commit_record(), |
zgu@4193 | 113 | "Sanity check"); |
zgu@4193 | 114 | if (MemTracker::track_callsite()) { |
zgu@4193 | 115 | new_rec.init((MemPointerRecordEx*)rec); |
zgu@4193 | 116 | } else { |
zgu@4193 | 117 | new_rec.init(rec); |
zgu@4193 | 118 | } |
zgu@4193 | 119 | return insert_after(&new_rec); |
zgu@4193 | 120 | } |
zgu@4193 | 121 | |
zgu@4193 | 122 | // we don't consolidate reserved regions, since they may be categorized |
zgu@4193 | 123 | // in different types. |
zgu@4193 | 124 | bool VMMemPointerIterator::add_reserved_region(MemPointerRecord* rec) { |
zgu@4193 | 125 | assert(rec->is_allocation_record(), "Sanity check"); |
zgu@4272 | 126 | VMMemRegion* reserved_region = (VMMemRegion*)current(); |
zgu@4193 | 127 | |
zgu@4193 | 128 | // we don't have anything yet |
zgu@4272 | 129 | if (reserved_region == NULL) { |
zgu@4193 | 130 | return insert_record(rec); |
zgu@4193 | 131 | } |
zgu@4193 | 132 | |
zgu@4272 | 133 | assert(reserved_region->is_reserved_region(), "Sanity check"); |
zgu@4193 | 134 | // duplicated records |
zgu@4272 | 135 | if (reserved_region->is_same_region(rec)) { |
zgu@4193 | 136 | return true; |
zgu@4193 | 137 | } |
zgu@4272 | 138 | // Overlapping stack regions indicate that a JNI thread failed to |
zgu@4272 | 139 | // detach from the VM before exiting. This leaks the JavaThread object. |
zgu@4272 | 140 | if (CheckJNICalls) { |
zgu@4272 | 141 | guarantee(FLAGS_TO_MEMORY_TYPE(reserved_region->flags()) != mtThreadStack || |
zgu@4272 | 142 | !reserved_region->overlaps_region(rec), |
zgu@4272 | 143 | "Attached JNI thread exited without being detached"); |
zgu@4272 | 144 | } |
zgu@4272 | 145 | // otherwise, we should not have overlapping reserved regions |
zgu@4272 | 146 | assert(FLAGS_TO_MEMORY_TYPE(reserved_region->flags()) == mtThreadStack || |
zgu@4272 | 147 | reserved_region->base() > rec->addr(), "Just check: locate()"); |
zgu@4272 | 148 | assert(FLAGS_TO_MEMORY_TYPE(reserved_region->flags()) == mtThreadStack || |
zgu@4272 | 149 | !reserved_region->overlaps_region(rec), "overlapping reserved regions"); |
zgu@4272 | 150 | |
zgu@4193 | 151 | return insert_record(rec); |
zgu@4193 | 152 | } |
zgu@4193 | 153 | |
zgu@4193 | 154 | // we do consolidate committed regions |
zgu@4193 | 155 | bool VMMemPointerIterator::add_committed_region(MemPointerRecord* rec) { |
zgu@4193 | 156 | assert(rec->is_commit_record(), "Sanity check"); |
zgu@4248 | 157 | VMMemRegion* reserved_rgn = (VMMemRegion*)current(); |
zgu@4248 | 158 | assert(reserved_rgn->is_reserved_region() && reserved_rgn->contains_region(rec), |
zgu@4193 | 159 | "Sanity check"); |
zgu@4193 | 160 | |
zgu@4193 | 161 | // thread's native stack is always marked as "committed", ignore |
zgu@4193 | 162 | // the "commit" operation for creating stack guard pages |
zgu@4248 | 163 | if (FLAGS_TO_MEMORY_TYPE(reserved_rgn->flags()) == mtThreadStack && |
zgu@4193 | 164 | FLAGS_TO_MEMORY_TYPE(rec->flags()) != mtThreadStack) { |
zgu@4193 | 165 | return true; |
zgu@4193 | 166 | } |
zgu@4193 | 167 | |
zgu@4248 | 168 | // if the reserved region has any committed regions |
zgu@4248 | 169 | VMMemRegion* committed_rgn = (VMMemRegion*)next(); |
zgu@4248 | 170 | while (committed_rgn != NULL && committed_rgn->is_committed_region()) { |
zgu@4193 | 171 | // duplicated commit records |
zgu@4248 | 172 | if(committed_rgn->contains_region(rec)) { |
zgu@4193 | 173 | return true; |
zgu@4248 | 174 | } else if (committed_rgn->overlaps_region(rec)) { |
zgu@4248 | 175 | // overlaps front part |
zgu@4248 | 176 | if (rec->addr() < committed_rgn->addr()) { |
zgu@4248 | 177 | committed_rgn->expand_region(rec->addr(), |
zgu@4248 | 178 | committed_rgn->addr() - rec->addr()); |
zgu@4193 | 179 | } else { |
zgu@4248 | 180 | // overlaps tail part |
zgu@4248 | 181 | address committed_rgn_end = committed_rgn->addr() + |
zgu@4248 | 182 | committed_rgn->size(); |
zgu@4248 | 183 | assert(committed_rgn_end < rec->addr() + rec->size(), |
zgu@4248 | 184 | "overlap tail part"); |
zgu@4248 | 185 | committed_rgn->expand_region(committed_rgn_end, |
zgu@4248 | 186 | (rec->addr() + rec->size()) - committed_rgn_end); |
zgu@4193 | 187 | } |
zgu@4248 | 188 | } else if (committed_rgn->base() + committed_rgn->size() == rec->addr()) { |
zgu@4248 | 189 | // adjunct each other |
zgu@4248 | 190 | committed_rgn->expand_region(rec->addr(), rec->size()); |
zgu@4193 | 191 | VMMemRegion* next_reg = (VMMemRegion*)next(); |
zgu@4193 | 192 | // see if we can consolidate next committed region |
zgu@4193 | 193 | if (next_reg != NULL && next_reg->is_committed_region() && |
zgu@4248 | 194 | next_reg->base() == committed_rgn->base() + committed_rgn->size()) { |
zgu@4248 | 195 | committed_rgn->expand_region(next_reg->base(), next_reg->size()); |
zgu@4248 | 196 | // delete merged region |
zgu@4193 | 197 | remove(); |
zgu@4193 | 198 | } |
zgu@4193 | 199 | return true; |
zgu@4248 | 200 | } else if (committed_rgn->base() > rec->addr()) { |
zgu@4248 | 201 | // found the location, insert this committed region |
zgu@4248 | 202 | return insert_record(rec); |
zgu@4193 | 203 | } |
zgu@4248 | 204 | committed_rgn = (VMMemRegion*)next(); |
zgu@4193 | 205 | } |
zgu@4193 | 206 | return insert_record(rec); |
zgu@4193 | 207 | } |
zgu@4193 | 208 | |
zgu@4193 | 209 | bool VMMemPointerIterator::remove_uncommitted_region(MemPointerRecord* rec) { |
zgu@4193 | 210 | assert(rec->is_uncommit_record(), "sanity check"); |
zgu@4193 | 211 | VMMemRegion* cur; |
zgu@4193 | 212 | cur = (VMMemRegion*)current(); |
zgu@4193 | 213 | assert(cur->is_reserved_region() && cur->contains_region(rec), |
zgu@4193 | 214 | "Sanity check"); |
zgu@4193 | 215 | // thread's native stack is always marked as "committed", ignore |
zgu@4193 | 216 | // the "commit" operation for creating stack guard pages |
zgu@4193 | 217 | if (FLAGS_TO_MEMORY_TYPE(cur->flags()) == mtThreadStack && |
zgu@4193 | 218 | FLAGS_TO_MEMORY_TYPE(rec->flags()) != mtThreadStack) { |
zgu@4193 | 219 | return true; |
zgu@4193 | 220 | } |
zgu@4193 | 221 | |
zgu@4193 | 222 | cur = (VMMemRegion*)next(); |
zgu@4193 | 223 | while (cur != NULL && cur->is_committed_region()) { |
zgu@4193 | 224 | // region already uncommitted, must be due to duplicated record |
zgu@4193 | 225 | if (cur->addr() >= rec->addr() + rec->size()) { |
zgu@4193 | 226 | break; |
zgu@4193 | 227 | } else if (cur->contains_region(rec)) { |
zgu@4193 | 228 | // uncommit whole region |
zgu@4193 | 229 | if (cur->is_same_region(rec)) { |
zgu@4193 | 230 | remove(); |
zgu@4193 | 231 | break; |
zgu@4193 | 232 | } else if (rec->addr() == cur->addr() || |
zgu@4193 | 233 | rec->addr() + rec->size() == cur->addr() + cur->size()) { |
zgu@4193 | 234 | // uncommitted from either end of current memory region. |
zgu@4193 | 235 | cur->exclude_region(rec->addr(), rec->size()); |
zgu@4193 | 236 | break; |
zgu@4193 | 237 | } else { // split the committed region and release the middle |
zgu@4193 | 238 | address high_addr = cur->addr() + cur->size(); |
zgu@4193 | 239 | size_t sz = high_addr - rec->addr(); |
zgu@4193 | 240 | cur->exclude_region(rec->addr(), sz); |
zgu@4193 | 241 | sz = high_addr - (rec->addr() + rec->size()); |
zgu@4193 | 242 | if (MemTracker::track_callsite()) { |
zgu@4193 | 243 | MemPointerRecordEx tmp(rec->addr() + rec->size(), cur->flags(), sz, |
zgu@4193 | 244 | ((VMMemRegionEx*)cur)->pc()); |
zgu@4193 | 245 | return insert_record_after(&tmp); |
zgu@4193 | 246 | } else { |
zgu@4193 | 247 | MemPointerRecord tmp(rec->addr() + rec->size(), cur->flags(), sz); |
zgu@4193 | 248 | return insert_record_after(&tmp); |
zgu@4193 | 249 | } |
zgu@4193 | 250 | } |
zgu@4193 | 251 | } |
zgu@4193 | 252 | cur = (VMMemRegion*)next(); |
zgu@4193 | 253 | } |
zgu@4193 | 254 | |
zgu@4193 | 255 | // we may not find committed record due to duplicated records |
zgu@4193 | 256 | return true; |
zgu@4193 | 257 | } |
zgu@4193 | 258 | |
zgu@4193 | 259 | bool VMMemPointerIterator::remove_released_region(MemPointerRecord* rec) { |
zgu@4193 | 260 | assert(rec->is_deallocation_record(), "Sanity check"); |
zgu@4193 | 261 | VMMemRegion* cur = (VMMemRegion*)current(); |
zgu@4193 | 262 | assert(cur->is_reserved_region() && cur->contains_region(rec), |
zgu@4193 | 263 | "Sanity check"); |
zgu@4285 | 264 | if (rec->is_same_region(cur)) { |
zgu@4285 | 265 | // release whole reserved region |
zgu@4193 | 266 | #ifdef ASSERT |
zgu@4285 | 267 | VMMemRegion* next_region = (VMMemRegion*)peek_next(); |
zgu@4285 | 268 | // should not have any committed memory in this reserved region |
zgu@4285 | 269 | assert(next_region == NULL || !next_region->is_committed_region(), "Sanity check"); |
zgu@4193 | 270 | #endif |
zgu@4193 | 271 | remove(); |
zgu@4193 | 272 | } else if (rec->addr() == cur->addr() || |
zgu@4193 | 273 | rec->addr() + rec->size() == cur->addr() + cur->size()) { |
zgu@4193 | 274 | // released region is at either end of this region |
zgu@4193 | 275 | cur->exclude_region(rec->addr(), rec->size()); |
zgu@4285 | 276 | assert(check_reserved_region(), "Integrity check"); |
zgu@4193 | 277 | } else { // split the reserved region and release the middle |
zgu@4193 | 278 | address high_addr = cur->addr() + cur->size(); |
zgu@4193 | 279 | size_t sz = high_addr - rec->addr(); |
zgu@4193 | 280 | cur->exclude_region(rec->addr(), sz); |
zgu@4193 | 281 | sz = high_addr - rec->addr() - rec->size(); |
zgu@4193 | 282 | if (MemTracker::track_callsite()) { |
zgu@4193 | 283 | MemPointerRecordEx tmp(rec->addr() + rec->size(), cur->flags(), sz, |
zgu@4193 | 284 | ((VMMemRegionEx*)cur)->pc()); |
zgu@4285 | 285 | bool ret = insert_reserved_region(&tmp); |
zgu@4285 | 286 | assert(!ret || check_reserved_region(), "Integrity check"); |
zgu@4285 | 287 | return ret; |
zgu@4193 | 288 | } else { |
zgu@4193 | 289 | MemPointerRecord tmp(rec->addr() + rec->size(), cur->flags(), sz); |
zgu@4285 | 290 | bool ret = insert_reserved_region(&tmp); |
zgu@4285 | 291 | assert(!ret || check_reserved_region(), "Integrity check"); |
zgu@4285 | 292 | return ret; |
zgu@4193 | 293 | } |
zgu@4193 | 294 | } |
zgu@4193 | 295 | return true; |
zgu@4193 | 296 | } |
zgu@4193 | 297 | |
zgu@4193 | 298 | bool VMMemPointerIterator::insert_reserved_region(MemPointerRecord* rec) { |
zgu@4193 | 299 | // skip all 'commit' records associated with previous reserved region |
zgu@4193 | 300 | VMMemRegion* p = (VMMemRegion*)next(); |
zgu@4193 | 301 | while (p != NULL && p->is_committed_region() && |
zgu@4193 | 302 | p->base() + p->size() < rec->addr()) { |
zgu@4193 | 303 | p = (VMMemRegion*)next(); |
zgu@4193 | 304 | } |
zgu@4193 | 305 | return insert_record(rec); |
zgu@4193 | 306 | } |
zgu@4193 | 307 | |
zgu@4193 | 308 | bool VMMemPointerIterator::split_reserved_region(VMMemRegion* rgn, address new_rgn_addr, size_t new_rgn_size) { |
zgu@4193 | 309 | assert(rgn->contains_region(new_rgn_addr, new_rgn_size), "Not fully contained"); |
zgu@4193 | 310 | address pc = (MemTracker::track_callsite() ? ((VMMemRegionEx*)rgn)->pc() : NULL); |
zgu@4193 | 311 | if (rgn->base() == new_rgn_addr) { // new region is at the beginning of the region |
zgu@4193 | 312 | size_t sz = rgn->size() - new_rgn_size; |
zgu@4193 | 313 | // the original region becomes 'new' region |
zgu@4193 | 314 | rgn->exclude_region(new_rgn_addr + new_rgn_size, sz); |
zgu@4193 | 315 | // remaining becomes next region |
zgu@4193 | 316 | MemPointerRecordEx next_rgn(new_rgn_addr + new_rgn_size, rgn->flags(), sz, pc); |
zgu@4193 | 317 | return insert_reserved_region(&next_rgn); |
zgu@4193 | 318 | } else if (rgn->base() + rgn->size() == new_rgn_addr + new_rgn_size) { |
zgu@4193 | 319 | rgn->exclude_region(new_rgn_addr, new_rgn_size); |
zgu@4193 | 320 | MemPointerRecordEx next_rgn(new_rgn_addr, rgn->flags(), new_rgn_size, pc); |
zgu@4193 | 321 | return insert_reserved_region(&next_rgn); |
zgu@4193 | 322 | } else { |
zgu@4193 | 323 | // the orginal region will be split into three |
zgu@4193 | 324 | address rgn_high_addr = rgn->base() + rgn->size(); |
zgu@4193 | 325 | // first region |
zgu@4193 | 326 | rgn->exclude_region(new_rgn_addr, (rgn_high_addr - new_rgn_addr)); |
zgu@4193 | 327 | // the second region is the new region |
zgu@4193 | 328 | MemPointerRecordEx new_rgn(new_rgn_addr, rgn->flags(), new_rgn_size, pc); |
zgu@4193 | 329 | if (!insert_reserved_region(&new_rgn)) return false; |
zgu@4193 | 330 | // the remaining region |
zgu@4193 | 331 | MemPointerRecordEx rem_rgn(new_rgn_addr + new_rgn_size, rgn->flags(), |
zgu@4193 | 332 | rgn_high_addr - (new_rgn_addr + new_rgn_size), pc); |
zgu@4193 | 333 | return insert_reserved_region(&rem_rgn); |
zgu@4193 | 334 | } |
zgu@4193 | 335 | } |
zgu@4193 | 336 | |
zgu@4053 | 337 | static int sort_in_seq_order(const void* p1, const void* p2) { |
zgu@4053 | 338 | assert(p1 != NULL && p2 != NULL, "Sanity check"); |
zgu@4053 | 339 | const MemPointerRecord* mp1 = (MemPointerRecord*)p1; |
zgu@4053 | 340 | const MemPointerRecord* mp2 = (MemPointerRecord*)p2; |
zgu@4053 | 341 | return (mp1->seq() - mp2->seq()); |
zgu@4053 | 342 | } |
zgu@3900 | 343 | |
zgu@4053 | 344 | bool StagingArea::init() { |
zgu@4053 | 345 | if (MemTracker::track_callsite()) { |
zgu@4053 | 346 | _malloc_data = new (std::nothrow)MemPointerArrayImpl<SeqMemPointerRecordEx>(); |
zgu@4053 | 347 | _vm_data = new (std::nothrow)MemPointerArrayImpl<SeqMemPointerRecordEx>(); |
zgu@3900 | 348 | } else { |
zgu@4053 | 349 | _malloc_data = new (std::nothrow)MemPointerArrayImpl<SeqMemPointerRecord>(); |
zgu@4053 | 350 | _vm_data = new (std::nothrow)MemPointerArrayImpl<SeqMemPointerRecord>(); |
zgu@3900 | 351 | } |
zgu@3900 | 352 | |
zgu@4053 | 353 | if (_malloc_data != NULL && _vm_data != NULL && |
zgu@4053 | 354 | !_malloc_data->out_of_memory() && |
zgu@4053 | 355 | !_vm_data->out_of_memory()) { |
zgu@3900 | 356 | return true; |
zgu@4053 | 357 | } else { |
zgu@4053 | 358 | if (_malloc_data != NULL) delete _malloc_data; |
zgu@4053 | 359 | if (_vm_data != NULL) delete _vm_data; |
zgu@4053 | 360 | _malloc_data = NULL; |
zgu@4053 | 361 | _vm_data = NULL; |
zgu@4053 | 362 | return false; |
zgu@3900 | 363 | } |
zgu@3900 | 364 | } |
zgu@3900 | 365 | |
zgu@3900 | 366 | |
zgu@4193 | 367 | VMRecordIterator StagingArea::virtual_memory_record_walker() { |
zgu@4053 | 368 | MemPointerArray* arr = vm_data(); |
zgu@4053 | 369 | // sort into seq number order |
zgu@4053 | 370 | arr->sort((FN_SORT)sort_in_seq_order); |
zgu@4193 | 371 | return VMRecordIterator(arr); |
zgu@4053 | 372 | } |
zgu@3900 | 373 | |
zgu@3900 | 374 | |
zgu@3900 | 375 | MemSnapshot::MemSnapshot() { |
zgu@3900 | 376 | if (MemTracker::track_callsite()) { |
zgu@3900 | 377 | _alloc_ptrs = new (std::nothrow) MemPointerArrayImpl<MemPointerRecordEx>(); |
zgu@3900 | 378 | _vm_ptrs = new (std::nothrow)MemPointerArrayImpl<VMMemRegionEx>(64, true); |
zgu@3900 | 379 | } else { |
zgu@3900 | 380 | _alloc_ptrs = new (std::nothrow) MemPointerArrayImpl<MemPointerRecord>(); |
zgu@3900 | 381 | _vm_ptrs = new (std::nothrow)MemPointerArrayImpl<VMMemRegion>(64, true); |
zgu@3900 | 382 | } |
zgu@3900 | 383 | |
zgu@4053 | 384 | _staging_area.init(); |
zgu@3936 | 385 | _lock = new (std::nothrow) Mutex(Monitor::max_nonleaf - 1, "memSnapshotLock"); |
zgu@3900 | 386 | NOT_PRODUCT(_untracked_count = 0;) |
zgu@3900 | 387 | } |
zgu@3900 | 388 | |
zgu@3900 | 389 | MemSnapshot::~MemSnapshot() { |
zgu@3900 | 390 | assert(MemTracker::shutdown_in_progress(), "native memory tracking still on"); |
zgu@3900 | 391 | { |
zgu@3900 | 392 | MutexLockerEx locker(_lock); |
zgu@3900 | 393 | if (_alloc_ptrs != NULL) { |
zgu@3900 | 394 | delete _alloc_ptrs; |
zgu@3900 | 395 | _alloc_ptrs = NULL; |
zgu@3900 | 396 | } |
zgu@3900 | 397 | |
zgu@3900 | 398 | if (_vm_ptrs != NULL) { |
zgu@3900 | 399 | delete _vm_ptrs; |
zgu@3900 | 400 | _vm_ptrs = NULL; |
zgu@3900 | 401 | } |
zgu@3900 | 402 | } |
zgu@3900 | 403 | |
zgu@3900 | 404 | if (_lock != NULL) { |
zgu@3900 | 405 | delete _lock; |
zgu@3900 | 406 | _lock = NULL; |
zgu@3900 | 407 | } |
zgu@3900 | 408 | } |
zgu@3900 | 409 | |
zgu@4274 | 410 | |
zgu@4274 | 411 | void MemSnapshot::copy_seq_pointer(MemPointerRecord* dest, const MemPointerRecord* src) { |
zgu@3900 | 412 | assert(dest != NULL && src != NULL, "Just check"); |
zgu@3900 | 413 | assert(dest->addr() == src->addr(), "Just check"); |
zgu@4274 | 414 | assert(dest->seq() > 0 && src->seq() > 0, "not sequenced"); |
zgu@3900 | 415 | |
zgu@4274 | 416 | if (MemTracker::track_callsite()) { |
zgu@4274 | 417 | *(SeqMemPointerRecordEx*)dest = *(SeqMemPointerRecordEx*)src; |
zgu@4274 | 418 | } else { |
zgu@4274 | 419 | *(SeqMemPointerRecord*)dest = *(SeqMemPointerRecord*)src; |
zgu@4274 | 420 | } |
zgu@4274 | 421 | } |
zgu@4274 | 422 | |
zgu@4274 | 423 | void MemSnapshot::assign_pointer(MemPointerRecord*dest, const MemPointerRecord* src) { |
zgu@4274 | 424 | assert(src != NULL && dest != NULL, "Just check"); |
zgu@4274 | 425 | assert(dest->seq() == 0 && src->seq() >0, "cast away sequence"); |
zgu@3900 | 426 | |
zgu@3900 | 427 | if (MemTracker::track_callsite()) { |
zgu@3900 | 428 | *(MemPointerRecordEx*)dest = *(MemPointerRecordEx*)src; |
zgu@3900 | 429 | } else { |
zgu@4274 | 430 | *(MemPointerRecord*)dest = *(MemPointerRecord*)src; |
zgu@3900 | 431 | } |
zgu@3900 | 432 | } |
zgu@3900 | 433 | |
zgu@4274 | 434 | // merge a recorder to the staging area |
zgu@3900 | 435 | bool MemSnapshot::merge(MemRecorder* rec) { |
zgu@3900 | 436 | assert(rec != NULL && !rec->out_of_memory(), "Just check"); |
zgu@3900 | 437 | |
zgu@3900 | 438 | SequencedRecordIterator itr(rec->pointer_itr()); |
zgu@3900 | 439 | |
zgu@3900 | 440 | MutexLockerEx lock(_lock, true); |
zgu@4053 | 441 | MemPointerIterator malloc_staging_itr(_staging_area.malloc_data()); |
zgu@4274 | 442 | MemPointerRecord* incoming_rec = (MemPointerRecord*) itr.current(); |
zgu@4274 | 443 | MemPointerRecord* matched_rec; |
zgu@4274 | 444 | |
zgu@4274 | 445 | while (incoming_rec != NULL) { |
zgu@4274 | 446 | if (incoming_rec->is_vm_pointer()) { |
zgu@4053 | 447 | // we don't do anything with virtual memory records during merge |
zgu@4274 | 448 | if (!_staging_area.vm_data()->append(incoming_rec)) { |
zgu@3900 | 449 | return false; |
zgu@3900 | 450 | } |
zgu@4053 | 451 | } else { |
zgu@4193 | 452 | // locate matched record and/or also position the iterator to proper |
zgu@4193 | 453 | // location for this incoming record. |
zgu@4274 | 454 | matched_rec = (MemPointerRecord*)malloc_staging_itr.locate(incoming_rec->addr()); |
zgu@4274 | 455 | // we have not seen this memory block in this generation, |
zgu@4274 | 456 | // so just add to staging area |
zgu@4274 | 457 | if (matched_rec == NULL) { |
zgu@4274 | 458 | if (!malloc_staging_itr.insert(incoming_rec)) { |
zgu@4053 | 459 | return false; |
zgu@4053 | 460 | } |
zgu@4274 | 461 | } else if (incoming_rec->addr() == matched_rec->addr()) { |
zgu@4274 | 462 | // whoever has higher sequence number wins |
zgu@4274 | 463 | if (incoming_rec->seq() > matched_rec->seq()) { |
zgu@4274 | 464 | copy_seq_pointer(matched_rec, incoming_rec); |
zgu@4053 | 465 | } |
zgu@4274 | 466 | } else if (incoming_rec->addr() < matched_rec->addr()) { |
zgu@4274 | 467 | if (!malloc_staging_itr.insert(incoming_rec)) { |
zgu@3900 | 468 | return false; |
zgu@3900 | 469 | } |
zgu@3900 | 470 | } else { |
zgu@4274 | 471 | ShouldNotReachHere(); |
zgu@3900 | 472 | } |
zgu@3900 | 473 | } |
zgu@4274 | 474 | incoming_rec = (MemPointerRecord*)itr.next(); |
zgu@3900 | 475 | } |
zgu@3900 | 476 | NOT_PRODUCT(void check_staging_data();) |
zgu@3900 | 477 | return true; |
zgu@3900 | 478 | } |
zgu@3900 | 479 | |
zgu@3900 | 480 | |
zgu@3900 | 481 | // promote data to next generation |
zgu@4053 | 482 | bool MemSnapshot::promote() { |
zgu@4053 | 483 | assert(_alloc_ptrs != NULL && _vm_ptrs != NULL, "Just check"); |
zgu@4053 | 484 | assert(_staging_area.malloc_data() != NULL && _staging_area.vm_data() != NULL, |
zgu@4053 | 485 | "Just check"); |
zgu@3900 | 486 | MutexLockerEx lock(_lock, true); |
zgu@4053 | 487 | |
zgu@4053 | 488 | MallocRecordIterator malloc_itr = _staging_area.malloc_record_walker(); |
zgu@4053 | 489 | bool promoted = false; |
zgu@4053 | 490 | if (promote_malloc_records(&malloc_itr)) { |
zgu@4193 | 491 | VMRecordIterator vm_itr = _staging_area.virtual_memory_record_walker(); |
zgu@4053 | 492 | if (promote_virtual_memory_records(&vm_itr)) { |
zgu@4053 | 493 | promoted = true; |
zgu@4053 | 494 | } |
zgu@4053 | 495 | } |
zgu@4053 | 496 | |
zgu@4053 | 497 | NOT_PRODUCT(check_malloc_pointers();) |
zgu@4053 | 498 | _staging_area.clear(); |
zgu@4053 | 499 | return promoted; |
zgu@4053 | 500 | } |
zgu@4053 | 501 | |
zgu@4053 | 502 | bool MemSnapshot::promote_malloc_records(MemPointerArrayIterator* itr) { |
zgu@4053 | 503 | MemPointerIterator malloc_snapshot_itr(_alloc_ptrs); |
zgu@4053 | 504 | MemPointerRecord* new_rec = (MemPointerRecord*)itr->current(); |
zgu@4053 | 505 | MemPointerRecord* matched_rec; |
zgu@4053 | 506 | while (new_rec != NULL) { |
zgu@4053 | 507 | matched_rec = (MemPointerRecord*)malloc_snapshot_itr.locate(new_rec->addr()); |
zgu@4053 | 508 | // found matched memory block |
zgu@4053 | 509 | if (matched_rec != NULL && new_rec->addr() == matched_rec->addr()) { |
zgu@4193 | 510 | // snapshot already contains 'live' records |
zgu@4274 | 511 | assert(matched_rec->is_allocation_record() || matched_rec->is_arena_memory_record(), |
zgu@4053 | 512 | "Sanity check"); |
zgu@4053 | 513 | // update block states |
zgu@4274 | 514 | if (new_rec->is_allocation_record()) { |
zgu@4274 | 515 | assign_pointer(matched_rec, new_rec); |
zgu@4274 | 516 | } else if (new_rec->is_arena_memory_record()) { |
zgu@4274 | 517 | if (new_rec->size() == 0) { |
zgu@4274 | 518 | // remove size record once size drops to 0 |
zgu@4274 | 519 | malloc_snapshot_itr.remove(); |
zgu@4274 | 520 | } else { |
zgu@4274 | 521 | assign_pointer(matched_rec, new_rec); |
zgu@4274 | 522 | } |
zgu@4053 | 523 | } else { |
zgu@4053 | 524 | // a deallocation record |
zgu@4053 | 525 | assert(new_rec->is_deallocation_record(), "Sanity check"); |
zgu@4053 | 526 | // an arena record can be followed by a size record, we need to remove both |
zgu@4053 | 527 | if (matched_rec->is_arena_record()) { |
zgu@4053 | 528 | MemPointerRecord* next = (MemPointerRecord*)malloc_snapshot_itr.peek_next(); |
zgu@4274 | 529 | if (next->is_arena_memory_record() && next->is_memory_record_of_arena(matched_rec)) { |
zgu@4053 | 530 | malloc_snapshot_itr.remove(); |
zgu@3900 | 531 | } |
zgu@4053 | 532 | } |
zgu@4053 | 533 | // the memory is deallocated, remove related record(s) |
zgu@4053 | 534 | malloc_snapshot_itr.remove(); |
zgu@4053 | 535 | } |
zgu@4053 | 536 | } else { |
zgu@4274 | 537 | // don't insert size 0 record |
zgu@4274 | 538 | if (new_rec->is_arena_memory_record() && new_rec->size() == 0) { |
zgu@4274 | 539 | new_rec = NULL; |
zgu@4053 | 540 | } |
zgu@4274 | 541 | |
zgu@4053 | 542 | if (new_rec != NULL) { |
zgu@4274 | 543 | if (new_rec->is_allocation_record() || new_rec->is_arena_memory_record()) { |
zgu@4053 | 544 | if (matched_rec != NULL && new_rec->addr() > matched_rec->addr()) { |
zgu@4053 | 545 | if (!malloc_snapshot_itr.insert_after(new_rec)) { |
zgu@4053 | 546 | return false; |
zgu@4053 | 547 | } |
zgu@3900 | 548 | } else { |
zgu@4053 | 549 | if (!malloc_snapshot_itr.insert(new_rec)) { |
zgu@4053 | 550 | return false; |
zgu@4053 | 551 | } |
zgu@4053 | 552 | } |
zgu@4053 | 553 | } |
zgu@4053 | 554 | #ifndef PRODUCT |
zgu@4053 | 555 | else if (!has_allocation_record(new_rec->addr())) { |
zgu@4053 | 556 | // NMT can not track some startup memory, which is allocated before NMT is on |
zgu@4053 | 557 | _untracked_count ++; |
zgu@4053 | 558 | } |
zgu@4053 | 559 | #endif |
zgu@4053 | 560 | } |
zgu@4053 | 561 | } |
zgu@4053 | 562 | new_rec = (MemPointerRecord*)itr->next(); |
zgu@4053 | 563 | } |
zgu@4053 | 564 | return true; |
zgu@4053 | 565 | } |
zgu@4053 | 566 | |
zgu@4053 | 567 | bool MemSnapshot::promote_virtual_memory_records(MemPointerArrayIterator* itr) { |
zgu@4053 | 568 | VMMemPointerIterator vm_snapshot_itr(_vm_ptrs); |
zgu@4053 | 569 | MemPointerRecord* new_rec = (MemPointerRecord*)itr->current(); |
zgu@4193 | 570 | VMMemRegion* reserved_rec; |
zgu@4053 | 571 | while (new_rec != NULL) { |
zgu@4053 | 572 | assert(new_rec->is_vm_pointer(), "Sanity check"); |
zgu@4193 | 573 | |
zgu@4193 | 574 | // locate a reserved region that contains the specified address, or |
zgu@4193 | 575 | // the nearest reserved region has base address just above the specified |
zgu@4193 | 576 | // address |
zgu@4193 | 577 | reserved_rec = (VMMemRegion*)vm_snapshot_itr.locate(new_rec->addr()); |
zgu@4193 | 578 | if (reserved_rec != NULL && reserved_rec->contains_region(new_rec)) { |
zgu@4053 | 579 | // snapshot can only have 'live' records |
zgu@4193 | 580 | assert(reserved_rec->is_reserved_region(), "Sanity check"); |
zgu@4193 | 581 | if (new_rec->is_allocation_record()) { |
zgu@4193 | 582 | if (!reserved_rec->is_same_region(new_rec)) { |
zgu@4193 | 583 | // only deal with split a bigger reserved region into smaller regions. |
zgu@4193 | 584 | // So far, CDS is the only use case. |
zgu@4193 | 585 | if (!vm_snapshot_itr.split_reserved_region(reserved_rec, new_rec->addr(), new_rec->size())) { |
zgu@4053 | 586 | return false; |
zgu@3900 | 587 | } |
zgu@3900 | 588 | } |
zgu@4193 | 589 | } else if (new_rec->is_uncommit_record()) { |
zgu@4193 | 590 | if (!vm_snapshot_itr.remove_uncommitted_region(new_rec)) { |
zgu@4193 | 591 | return false; |
zgu@4193 | 592 | } |
zgu@4193 | 593 | } else if (new_rec->is_commit_record()) { |
zgu@4193 | 594 | // insert or expand existing committed region to cover this |
zgu@4193 | 595 | // newly committed region |
zgu@4193 | 596 | if (!vm_snapshot_itr.add_committed_region(new_rec)) { |
zgu@4193 | 597 | return false; |
zgu@4193 | 598 | } |
zgu@4193 | 599 | } else if (new_rec->is_deallocation_record()) { |
zgu@4193 | 600 | // release part or all memory region |
zgu@4193 | 601 | if (!vm_snapshot_itr.remove_released_region(new_rec)) { |
zgu@4193 | 602 | return false; |
zgu@4193 | 603 | } |
zgu@4193 | 604 | } else if (new_rec->is_type_tagging_record()) { |
zgu@4193 | 605 | // tag this reserved virtual memory range to a memory type. Can not re-tag a memory range |
zgu@4193 | 606 | // to different type. |
zgu@4193 | 607 | assert(FLAGS_TO_MEMORY_TYPE(reserved_rec->flags()) == mtNone || |
zgu@4193 | 608 | FLAGS_TO_MEMORY_TYPE(reserved_rec->flags()) == FLAGS_TO_MEMORY_TYPE(new_rec->flags()), |
zgu@4193 | 609 | "Sanity check"); |
zgu@4193 | 610 | reserved_rec->tag(new_rec->flags()); |
zgu@4193 | 611 | } else { |
zgu@4193 | 612 | ShouldNotReachHere(); |
zgu@4193 | 613 | } |
zgu@4193 | 614 | } else { |
zgu@4193 | 615 | /* |
zgu@4193 | 616 | * The assertion failure indicates mis-matched virtual memory records. The likely |
zgu@4193 | 617 | * scenario is, that some virtual memory operations are not going through os::xxxx_memory() |
zgu@4193 | 618 | * api, which have to be tracked manually. (perfMemory is an example). |
zgu@4193 | 619 | */ |
zgu@4193 | 620 | assert(new_rec->is_allocation_record(), "Sanity check"); |
zgu@4193 | 621 | if (!vm_snapshot_itr.add_reserved_region(new_rec)) { |
zgu@4193 | 622 | return false; |
zgu@4193 | 623 | } |
zgu@3900 | 624 | } |
zgu@4053 | 625 | new_rec = (MemPointerRecord*)itr->next(); |
zgu@4053 | 626 | } |
zgu@4053 | 627 | return true; |
zgu@3900 | 628 | } |
zgu@3900 | 629 | |
zgu@3994 | 630 | #ifndef PRODUCT |
zgu@3900 | 631 | void MemSnapshot::print_snapshot_stats(outputStream* st) { |
zgu@3900 | 632 | st->print_cr("Snapshot:"); |
zgu@3900 | 633 | st->print_cr("\tMalloced: %d/%d [%5.2f%%] %dKB", _alloc_ptrs->length(), _alloc_ptrs->capacity(), |
zgu@3900 | 634 | (100.0 * (float)_alloc_ptrs->length()) / (float)_alloc_ptrs->capacity(), _alloc_ptrs->instance_size()/K); |
zgu@3900 | 635 | |
zgu@3900 | 636 | st->print_cr("\tVM: %d/%d [%5.2f%%] %dKB", _vm_ptrs->length(), _vm_ptrs->capacity(), |
zgu@3900 | 637 | (100.0 * (float)_vm_ptrs->length()) / (float)_vm_ptrs->capacity(), _vm_ptrs->instance_size()/K); |
zgu@3900 | 638 | |
zgu@4053 | 639 | st->print_cr("\tMalloc staging Area: %d/%d [%5.2f%%] %dKB", _staging_area.malloc_data()->length(), |
zgu@4053 | 640 | _staging_area.malloc_data()->capacity(), |
zgu@4053 | 641 | (100.0 * (float)_staging_area.malloc_data()->length()) / (float)_staging_area.malloc_data()->capacity(), |
zgu@4053 | 642 | _staging_area.malloc_data()->instance_size()/K); |
zgu@4053 | 643 | |
zgu@4053 | 644 | st->print_cr("\tVirtual memory staging Area: %d/%d [%5.2f%%] %dKB", _staging_area.vm_data()->length(), |
zgu@4053 | 645 | _staging_area.vm_data()->capacity(), |
zgu@4053 | 646 | (100.0 * (float)_staging_area.vm_data()->length()) / (float)_staging_area.vm_data()->capacity(), |
zgu@4053 | 647 | _staging_area.vm_data()->instance_size()/K); |
zgu@3900 | 648 | |
zgu@3900 | 649 | st->print_cr("\tUntracked allocation: %d", _untracked_count); |
zgu@3900 | 650 | } |
zgu@3900 | 651 | |
zgu@3900 | 652 | void MemSnapshot::check_malloc_pointers() { |
zgu@3900 | 653 | MemPointerArrayIteratorImpl mItr(_alloc_ptrs); |
zgu@3900 | 654 | MemPointerRecord* p = (MemPointerRecord*)mItr.current(); |
zgu@3900 | 655 | MemPointerRecord* prev = NULL; |
zgu@3900 | 656 | while (p != NULL) { |
zgu@3900 | 657 | if (prev != NULL) { |
zgu@3900 | 658 | assert(p->addr() >= prev->addr(), "sorting order"); |
zgu@3900 | 659 | } |
zgu@3900 | 660 | prev = p; |
zgu@3900 | 661 | p = (MemPointerRecord*)mItr.next(); |
zgu@3900 | 662 | } |
zgu@3900 | 663 | } |
zgu@3900 | 664 | |
zgu@3994 | 665 | bool MemSnapshot::has_allocation_record(address addr) { |
zgu@4053 | 666 | MemPointerArrayIteratorImpl itr(_staging_area.malloc_data()); |
zgu@3994 | 667 | MemPointerRecord* cur = (MemPointerRecord*)itr.current(); |
zgu@3994 | 668 | while (cur != NULL) { |
zgu@3994 | 669 | if (cur->addr() == addr && cur->is_allocation_record()) { |
zgu@3994 | 670 | return true; |
zgu@3994 | 671 | } |
zgu@3994 | 672 | cur = (MemPointerRecord*)itr.next(); |
zgu@3994 | 673 | } |
zgu@3994 | 674 | return false; |
zgu@3994 | 675 | } |
zgu@3994 | 676 | #endif // PRODUCT |
zgu@3994 | 677 | |
zgu@3994 | 678 | #ifdef ASSERT |
zgu@3900 | 679 | void MemSnapshot::check_staging_data() { |
zgu@4053 | 680 | MemPointerArrayIteratorImpl itr(_staging_area.malloc_data()); |
zgu@3900 | 681 | MemPointerRecord* cur = (MemPointerRecord*)itr.current(); |
zgu@3900 | 682 | MemPointerRecord* next = (MemPointerRecord*)itr.next(); |
zgu@3900 | 683 | while (next != NULL) { |
zgu@3900 | 684 | assert((next->addr() > cur->addr()) || |
zgu@3900 | 685 | ((next->flags() & MemPointerRecord::tag_masks) > |
zgu@3900 | 686 | (cur->flags() & MemPointerRecord::tag_masks)), |
zgu@3900 | 687 | "sorting order"); |
zgu@3900 | 688 | cur = next; |
zgu@3900 | 689 | next = (MemPointerRecord*)itr.next(); |
zgu@3900 | 690 | } |
zgu@4053 | 691 | |
zgu@4053 | 692 | MemPointerArrayIteratorImpl vm_itr(_staging_area.vm_data()); |
zgu@4053 | 693 | cur = (MemPointerRecord*)vm_itr.current(); |
zgu@4053 | 694 | while (cur != NULL) { |
zgu@4053 | 695 | assert(cur->is_vm_pointer(), "virtual memory pointer only"); |
zgu@4053 | 696 | cur = (MemPointerRecord*)vm_itr.next(); |
zgu@4053 | 697 | } |
zgu@3900 | 698 | } |
zgu@4193 | 699 | |
zgu@4193 | 700 | void MemSnapshot::dump_all_vm_pointers() { |
zgu@4193 | 701 | MemPointerArrayIteratorImpl itr(_vm_ptrs); |
zgu@4193 | 702 | VMMemRegion* ptr = (VMMemRegion*)itr.current(); |
zgu@4193 | 703 | tty->print_cr("dump virtual memory pointers:"); |
zgu@4193 | 704 | while (ptr != NULL) { |
zgu@4193 | 705 | if (ptr->is_committed_region()) { |
zgu@4193 | 706 | tty->print("\t"); |
zgu@4193 | 707 | } |
zgu@4193 | 708 | tty->print("[" PTR_FORMAT " - " PTR_FORMAT "] [%x]", ptr->addr(), |
zgu@4193 | 709 | (ptr->addr() + ptr->size()), ptr->flags()); |
zgu@4193 | 710 | |
zgu@4193 | 711 | if (MemTracker::track_callsite()) { |
zgu@4193 | 712 | VMMemRegionEx* ex = (VMMemRegionEx*)ptr; |
zgu@4193 | 713 | if (ex->pc() != NULL) { |
zgu@4193 | 714 | char buf[1024]; |
zgu@4193 | 715 | if (os::dll_address_to_function_name(ex->pc(), buf, sizeof(buf), NULL)) { |
zgu@4193 | 716 | tty->print_cr("\t%s", buf); |
zgu@4193 | 717 | } else { |
zgu@4193 | 718 | tty->print_cr(""); |
zgu@4193 | 719 | } |
zgu@4193 | 720 | } |
zgu@4193 | 721 | } |
zgu@4193 | 722 | |
zgu@4193 | 723 | ptr = (VMMemRegion*)itr.next(); |
zgu@4193 | 724 | } |
zgu@4193 | 725 | tty->flush(); |
zgu@4193 | 726 | } |
zgu@3994 | 727 | #endif // ASSERT |
zgu@3900 | 728 |