Tue, 11 May 2010 14:35:43 -0700
6931180: Migration to recent versions of MS Platform SDK
6951582: Build problems on win64
Summary: Changes to enable building JDK7 with Microsoft Visual Studio 2010
Reviewed-by: ohair, art, ccheung, dcubed
duke@435 | 1 | /* |
xdono@631 | 2 | * Copyright 2001-2008 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 | |
coleenp@548 | 25 | // Methods of protected closure types |
coleenp@548 | 26 | |
coleenp@548 | 27 | template <class T> |
coleenp@548 | 28 | inline void DefNewGeneration::KeepAliveClosure::do_oop_work(T* p) { |
coleenp@548 | 29 | #ifdef ASSERT |
coleenp@548 | 30 | { |
coleenp@548 | 31 | // We never expect to see a null reference being processed |
coleenp@548 | 32 | // as a weak reference. |
coleenp@548 | 33 | assert (!oopDesc::is_null(*p), "expected non-null ref"); |
coleenp@548 | 34 | oop obj = oopDesc::load_decode_heap_oop_not_null(p); |
coleenp@548 | 35 | assert (obj->is_oop(), "expected an oop while scanning weak refs"); |
coleenp@548 | 36 | } |
coleenp@548 | 37 | #endif // ASSERT |
coleenp@548 | 38 | |
coleenp@548 | 39 | _cl->do_oop_nv(p); |
coleenp@548 | 40 | |
coleenp@548 | 41 | // Card marking is trickier for weak refs. |
coleenp@548 | 42 | // This oop is a 'next' field which was filled in while we |
coleenp@548 | 43 | // were discovering weak references. While we might not need |
coleenp@548 | 44 | // to take a special action to keep this reference alive, we |
coleenp@548 | 45 | // will need to dirty a card as the field was modified. |
coleenp@548 | 46 | // |
coleenp@548 | 47 | // Alternatively, we could create a method which iterates through |
coleenp@548 | 48 | // each generation, allowing them in turn to examine the modified |
coleenp@548 | 49 | // field. |
coleenp@548 | 50 | // |
coleenp@548 | 51 | // We could check that p is also in an older generation, but |
coleenp@548 | 52 | // dirty cards in the youngest gen are never scanned, so the |
coleenp@548 | 53 | // extra check probably isn't worthwhile. |
coleenp@548 | 54 | if (Universe::heap()->is_in_reserved(p)) { |
coleenp@548 | 55 | oop obj = oopDesc::load_decode_heap_oop_not_null(p); |
coleenp@548 | 56 | _rs->inline_write_ref_field_gc(p, obj); |
coleenp@548 | 57 | } |
duke@435 | 58 | } |
duke@435 | 59 | |
coleenp@548 | 60 | template <class T> |
coleenp@548 | 61 | inline void DefNewGeneration::FastKeepAliveClosure::do_oop_work(T* p) { |
coleenp@548 | 62 | #ifdef ASSERT |
coleenp@548 | 63 | { |
coleenp@548 | 64 | // We never expect to see a null reference being processed |
coleenp@548 | 65 | // as a weak reference. |
coleenp@548 | 66 | assert (!oopDesc::is_null(*p), "expected non-null ref"); |
coleenp@548 | 67 | oop obj = oopDesc::load_decode_heap_oop_not_null(p); |
coleenp@548 | 68 | assert (obj->is_oop(), "expected an oop while scanning weak refs"); |
duke@435 | 69 | } |
coleenp@548 | 70 | #endif // ASSERT |
duke@435 | 71 | |
coleenp@548 | 72 | _cl->do_oop_nv(p); |
coleenp@548 | 73 | |
coleenp@548 | 74 | // Optimized for Defnew generation if it's the youngest generation: |
coleenp@548 | 75 | // we set a younger_gen card if we have an older->youngest |
coleenp@548 | 76 | // generation pointer. |
coleenp@548 | 77 | oop obj = oopDesc::load_decode_heap_oop_not_null(p); |
coleenp@548 | 78 | if (((HeapWord*)obj < _boundary) && Universe::heap()->is_in_reserved(p)) { |
coleenp@548 | 79 | _rs->inline_write_ref_field_gc(p, obj); |
duke@435 | 80 | } |
duke@435 | 81 | } |