Mercurial > jdk8-mips64-public > hotspot / file comparison
comparison: src/share/vm/services/memSnapshot.cpp
src/share/vm/services/memSnapshot.cpp
- changeset 5053
- c18152e0554e
- parent 4641
- fc64254f5579
- child 6680
- 78bbf4d43a14
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| 5051:9c8e2f44228d | 5053:c18152e0554e |
|---|---|
| 1 /* | 1 /* |
| 2 * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved. | 2 * Copyright (c) 2012, 2013, Oracle and/or its affiliates. All rights reserved. |
| 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | 4 * |
| 5 * This code is free software; you can redistribute it and/or modify it | 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 | 6 * under the terms of the GNU General Public License version 2 only, as |
| 7 * published by the Free Software Foundation. | 7 * published by the Free Software Foundation. |
| 260 assert(rec->is_deallocation_record(), "Sanity check"); | 260 assert(rec->is_deallocation_record(), "Sanity check"); |
| 261 VMMemRegion* cur = (VMMemRegion*)current(); | 261 VMMemRegion* cur = (VMMemRegion*)current(); |
| 262 assert(cur->is_reserved_region() && cur->contains_region(rec), | 262 assert(cur->is_reserved_region() && cur->contains_region(rec), |
| 263 "Sanity check"); | 263 "Sanity check"); |
| 264 if (rec->is_same_region(cur)) { | 264 if (rec->is_same_region(cur)) { |
| 265 // release whole reserved region | 265 |
| 266 // In snapshot, the virtual memory records are sorted in following orders: | |
| 267 // 1. virtual memory's base address | |
| 268 // 2. virtual memory reservation record, followed by commit records within this reservation. | |
| 269 // The commit records are also in base address order. | |
| 270 // When a reserved region is released, we want to remove the reservation record and all | |
| 271 // commit records following it. | |
| 266 #ifdef ASSERT | 272 #ifdef ASSERT |
| 267 VMMemRegion* next_region = (VMMemRegion*)peek_next(); | 273 address low_addr = cur->addr(); |
| 268 // should not have any committed memory in this reserved region | 274 address high_addr = low_addr + cur->size(); |
| 269 assert(next_region == NULL || !next_region->is_committed_region(), "Sanity check"); | |
| 270 #endif | 275 #endif |
| 276 // remove virtual memory reservation record | |
| 271 remove(); | 277 remove(); |
| 278 // remove committed regions within above reservation | |
| 279 VMMemRegion* next_region = (VMMemRegion*)current(); | |
| 280 while (next_region != NULL && next_region->is_committed_region()) { | |
| 281 assert(next_region->addr() >= low_addr && | |
| 282 next_region->addr() + next_region->size() <= high_addr, | |
| 283 "Range check"); | |
| 284 remove(); | |
| 285 next_region = (VMMemRegion*)current(); | |
| 286 } | |
| 272 } else if (rec->addr() == cur->addr() || | 287 } else if (rec->addr() == cur->addr() || |
| 273 rec->addr() + rec->size() == cur->addr() + cur->size()) { | 288 rec->addr() + rec->size() == cur->addr() + cur->size()) { |
| 274 // released region is at either end of this region | 289 // released region is at either end of this region |
| 275 cur->exclude_region(rec->addr(), rec->size()); | 290 cur->exclude_region(rec->addr(), rec->size()); |
| 276 assert(check_reserved_region(), "Integrity check"); | 291 assert(check_reserved_region(), "Integrity check"); |
