Mercurial > hg > truffle
annotate src/share/vm/runtime/orderAccess.cpp @ 10246:194f52aa2f23
7176479: G1: JVM crashes on T5-8 system with 1.5 TB heap
Summary: Refactor G1's hot card cache and card counts table into their own files. Simplify the card counts table, including removing the encoding of the card index in each entry. The card counts table now has a 1:1 correspondence with the cards spanned by heap. Space for the card counts table is reserved from virtual memory (rather than C heap) during JVM startup and is committed/expanded when the heap is expanded. Changes were also reviewed-by Vitaly Davidovich.
Reviewed-by: tschatzl, jmasa
author | johnc |
---|---|
date | Thu, 09 May 2013 11:16:39 -0700 |
parents | f95d63e2154a |
children |
rev | line source |
---|---|
0 | 1 /* |
1711
a6bff45449bc
6973570: OrderAccess::storestore() scales poorly on multi-socket x64 and sparc: cache-line ping-ponging
ysr
parents:
1552
diff
changeset
|
2 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
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 | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
1552
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
844
diff
changeset
|
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
844
diff
changeset
|
20 * or visit www.oracle.com if you need additional information or have any |
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
844
diff
changeset
|
21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
26 #include "runtime/orderAccess.hpp" | |
27 #include "runtime/stubRoutines.hpp" | |
28 #include "runtime/thread.hpp" | |
0 | 29 |
671
d0994e5bebce
6822204: volatile fences should prefer lock:addl to actual mfence instructions
never
parents:
0
diff
changeset
|
30 void OrderAccess::StubRoutines_fence() { |
d0994e5bebce
6822204: volatile fences should prefer lock:addl to actual mfence instructions
never
parents:
0
diff
changeset
|
31 // Use a stub if it exists. It may not exist during bootstrap so do |
d0994e5bebce
6822204: volatile fences should prefer lock:addl to actual mfence instructions
never
parents:
0
diff
changeset
|
32 // nothing in that case but assert if no fence code exists after threads have been created |
d0994e5bebce
6822204: volatile fences should prefer lock:addl to actual mfence instructions
never
parents:
0
diff
changeset
|
33 void (*func)() = CAST_TO_FN_PTR(void (*)(), StubRoutines::fence_entry()); |
d0994e5bebce
6822204: volatile fences should prefer lock:addl to actual mfence instructions
never
parents:
0
diff
changeset
|
34 |
d0994e5bebce
6822204: volatile fences should prefer lock:addl to actual mfence instructions
never
parents:
0
diff
changeset
|
35 if (func != NULL) { |
d0994e5bebce
6822204: volatile fences should prefer lock:addl to actual mfence instructions
never
parents:
0
diff
changeset
|
36 (*func)(); |
d0994e5bebce
6822204: volatile fences should prefer lock:addl to actual mfence instructions
never
parents:
0
diff
changeset
|
37 return; |
d0994e5bebce
6822204: volatile fences should prefer lock:addl to actual mfence instructions
never
parents:
0
diff
changeset
|
38 } |
d0994e5bebce
6822204: volatile fences should prefer lock:addl to actual mfence instructions
never
parents:
0
diff
changeset
|
39 assert(Threads::number_of_threads() == 0, "for bootstrap only"); |
d0994e5bebce
6822204: volatile fences should prefer lock:addl to actual mfence instructions
never
parents:
0
diff
changeset
|
40 } |