Fri, 09 May 2008 08:55:13 -0700
6670684: 4/5 SA command universe did not print out CMS space information
Summary: Forward port of Yumin's fix for 6670684 from HSX-11; Yumin verified the port was correct.
Reviewed-by: dcubed
duke@435 | 1 | /* |
duke@435 | 2 | * Copyright 2001-2006 Sun Microsystems, Inc. All Rights Reserved. |
duke@435 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
duke@435 | 4 | * |
duke@435 | 5 | * This code is free software; you can redistribute it and/or modify it |
duke@435 | 6 | * under the terms of the GNU General Public License version 2 only, as |
duke@435 | 7 | * published by the Free Software Foundation. |
duke@435 | 8 | * |
duke@435 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
duke@435 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
duke@435 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
duke@435 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
duke@435 | 13 | * accompanied this code). |
duke@435 | 14 | * |
duke@435 | 15 | * You should have received a copy of the GNU General Public License version |
duke@435 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
duke@435 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
duke@435 | 18 | * |
duke@435 | 19 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
duke@435 | 20 | * CA 95054 USA or visit www.sun.com if you need additional information or |
duke@435 | 21 | * have any questions. |
duke@435 | 22 | * |
duke@435 | 23 | */ |
duke@435 | 24 | |
duke@435 | 25 | # include "incls/_precompiled.incl" |
duke@435 | 26 | # include "incls/_freeChunk.cpp.incl" |
duke@435 | 27 | |
duke@435 | 28 | #ifndef PRODUCT |
duke@435 | 29 | |
duke@435 | 30 | #define baadbabeHeapWord badHeapWordVal |
duke@435 | 31 | #define deadbeefHeapWord 0xdeadbeef |
duke@435 | 32 | |
duke@435 | 33 | size_t const FreeChunk::header_size() { |
duke@435 | 34 | return sizeof(FreeChunk)/HeapWordSize; |
duke@435 | 35 | } |
duke@435 | 36 | |
duke@435 | 37 | void FreeChunk::mangleAllocated(size_t size) { |
duke@435 | 38 | // mangle all but the header of a just-allocated block |
duke@435 | 39 | // of storage |
duke@435 | 40 | assert(size >= MinChunkSize, "smallest size of object"); |
duke@435 | 41 | // we can't assert that _size == size because this may be an |
duke@435 | 42 | // allocation out of a linear allocation block |
duke@435 | 43 | assert(sizeof(FreeChunk) % HeapWordSize == 0, |
duke@435 | 44 | "shouldn't write beyond chunk"); |
duke@435 | 45 | HeapWord* addr = (HeapWord*)this; |
duke@435 | 46 | size_t hdr = header_size(); |
duke@435 | 47 | Copy::fill_to_words(addr + hdr, size - hdr, baadbabeHeapWord); |
duke@435 | 48 | } |
duke@435 | 49 | |
duke@435 | 50 | void FreeChunk::mangleFreed(size_t size) { |
duke@435 | 51 | assert(baadbabeHeapWord != deadbeefHeapWord, "Need distinct patterns"); |
duke@435 | 52 | // mangle all but the header of a just-freed block of storage |
duke@435 | 53 | // just prior to passing it to the storage dictionary |
duke@435 | 54 | assert(size >= MinChunkSize, "smallest size of object"); |
duke@435 | 55 | assert(size == _size, "just checking"); |
duke@435 | 56 | HeapWord* addr = (HeapWord*)this; |
duke@435 | 57 | size_t hdr = header_size(); |
duke@435 | 58 | Copy::fill_to_words(addr + hdr, size - hdr, deadbeefHeapWord); |
duke@435 | 59 | } |
duke@435 | 60 | |
duke@435 | 61 | void FreeChunk::verifyList() const { |
duke@435 | 62 | FreeChunk* nextFC = next(); |
duke@435 | 63 | if (nextFC != NULL) { |
duke@435 | 64 | assert(this == nextFC->prev(), "broken chain"); |
duke@435 | 65 | assert(size() == nextFC->size(), "wrong size"); |
duke@435 | 66 | nextFC->verifyList(); |
duke@435 | 67 | } |
duke@435 | 68 | } |
duke@435 | 69 | #endif |