Mercurial > hg > truffle
annotate src/share/vm/ci/ciCallSite.cpp @ 20543:e7d0505c8a30
8059758: Footprint regressions with JDK-8038423
Summary: Changes in JDK-8038423 always initialize (zero out) virtual memory used for auxiliary data structures. This causes a footprint regression for G1 in startup benchmarks. This is because they do not touch that memory at all, so the operating system does not actually commit these pages. The fix is to, if the initialization value of the data structures matches the default value of just committed memory (=0), do not do anything.
Reviewed-by: jwilhelm, brutisso
author | tschatzl |
---|---|
date | Fri, 10 Oct 2014 15:51:58 +0200 |
parents | fdb992d83a87 |
children |
rev | line source |
---|---|
1138
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
diff
changeset
|
1 /* |
2357
8033953d67ff
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
1972
diff
changeset
|
2 * Copyright (c) 2009, 2011, Oracle and/or its affiliates. All rights reserved. |
1138
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
diff
changeset
|
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
diff
changeset
|
4 * |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
diff
changeset
|
5 * This code is free software; you can redistribute it and/or modify it |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
diff
changeset
|
6 * under the terms of the GNU General Public License version 2 only, as |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
diff
changeset
|
7 * published by the Free Software Foundation. |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
diff
changeset
|
8 * |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
diff
changeset
|
9 * This code is distributed in the hope that it will be useful, but WITHOUT |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
diff
changeset
|
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
diff
changeset
|
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
diff
changeset
|
12 * version 2 for more details (a copy is included in the LICENSE file that |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
diff
changeset
|
13 * accompanied this code). |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
diff
changeset
|
14 * |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
diff
changeset
|
15 * You should have received a copy of the GNU General Public License version |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
diff
changeset
|
16 * 2 along with this work; if not, write to the Free Software Foundation, |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
diff
changeset
|
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
diff
changeset
|
18 * |
1552
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
1138
diff
changeset
|
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
1138
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:
1138
diff
changeset
|
21 * questions. |
1138
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
diff
changeset
|
22 * |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
diff
changeset
|
23 */ |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
diff
changeset
|
24 |
1972 | 25 #include "precompiled.hpp" |
26 #include "ci/ciCallSite.hpp" | |
27 #include "ci/ciUtilities.hpp" | |
1138
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
diff
changeset
|
28 |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
diff
changeset
|
29 // ciCallSite |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
diff
changeset
|
30 |
3852
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
2357
diff
changeset
|
31 bool ciCallSite::is_constant_call_site() { |
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
2357
diff
changeset
|
32 return klass()->is_subclass_of(CURRENT_ENV->ConstantCallSite_klass()); |
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
2357
diff
changeset
|
33 } |
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
2357
diff
changeset
|
34 bool ciCallSite::is_mutable_call_site() { |
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
2357
diff
changeset
|
35 return klass()->is_subclass_of(CURRENT_ENV->MutableCallSite_klass()); |
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
2357
diff
changeset
|
36 } |
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
2357
diff
changeset
|
37 bool ciCallSite::is_volatile_call_site() { |
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
2357
diff
changeset
|
38 return klass()->is_subclass_of(CURRENT_ENV->VolatileCallSite_klass()); |
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
2357
diff
changeset
|
39 } |
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
2357
diff
changeset
|
40 |
1138
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
diff
changeset
|
41 // ------------------------------------------------------------------ |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
diff
changeset
|
42 // ciCallSite::get_target |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
diff
changeset
|
43 // |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
diff
changeset
|
44 // Return the target MethodHandle of this CallSite. |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
diff
changeset
|
45 ciMethodHandle* ciCallSite::get_target() const { |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
diff
changeset
|
46 VM_ENTRY_MARK; |
2357
8033953d67ff
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
1972
diff
changeset
|
47 oop method_handle_oop = java_lang_invoke_CallSite::target(get_oop()); |
1138
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
diff
changeset
|
48 return CURRENT_ENV->get_object(method_handle_oop)->as_method_handle(); |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
diff
changeset
|
49 } |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
diff
changeset
|
50 |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
diff
changeset
|
51 // ------------------------------------------------------------------ |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
diff
changeset
|
52 // ciCallSite::print |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
diff
changeset
|
53 // |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
diff
changeset
|
54 // Print debugging information about the CallSite. |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
diff
changeset
|
55 void ciCallSite::print() { |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
diff
changeset
|
56 Unimplemented(); |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
diff
changeset
|
57 } |