Tue, 14 Jul 2009 15:40:39 -0700
6700789: G1: Enable use of compressed oops with G1 heaps
Summary: Modifications to G1 so as to allow the use of compressed oops.
Reviewed-by: apetrusenko, coleenp, jmasa, kvn, never, phh, tonyp
1 /*
2 * Copyright 1997-2006 Sun Microsystems, Inc. All Rights Reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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13 * accompanied this code).
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23 */
25 # include "incls/_precompiled.incl"
26 # include "incls/_barrierSet.cpp.incl"
28 // count is number of array elements being written
29 void BarrierSet::static_write_ref_array_pre(HeapWord* start, size_t count) {
30 assert(count <= (size_t)max_intx, "count too large");
31 #if 0
32 warning("Pre: \t" INTPTR_FORMAT "[" SIZE_FORMAT "]\t",
33 start, count);
34 #endif
35 if (UseCompressedOops) {
36 Universe::heap()->barrier_set()->write_ref_array_pre((narrowOop*)start, (int)count);
37 } else {
38 Universe::heap()->barrier_set()->write_ref_array_pre( (oop*)start, (int)count);
39 }
40 }
42 // count is number of array elements being written
43 void BarrierSet::static_write_ref_array_post(HeapWord* start, size_t count) {
44 assert(count <= (size_t)max_intx, "count too large");
45 HeapWord* end = start + objArrayOopDesc::array_size((int)count);
46 #if 0
47 warning("Post:\t" INTPTR_FORMAT "[" SIZE_FORMAT "] : [" INTPTR_FORMAT","INTPTR_FORMAT")\t",
48 start, count, start, end);
49 #endif
50 Universe::heap()->barrier_set()->write_ref_array_work(MemRegion(start, end));
51 }