Mercurial > hg > graal-jvmci-8
annotate src/share/vm/classfile/metadataOnStackMark.hpp @ 23822:626f594dffa6
8139040: Fix initializations before ShouldNotReachHere() etc. and enable -Wuninitialized on linux.
Reviewed-by: stuefe, coleenp, roland
author | csahu |
---|---|
date | Tue, 01 Mar 2016 12:50:37 +0530 |
parents | b12a2a9b05ca |
children |
rev | line source |
---|---|
7949
5daaddd917a1
8006040: NPG: on_stack processing wastes space in ConstantPool
coleenp
parents:
diff
changeset
|
1 /* |
5daaddd917a1
8006040: NPG: on_stack processing wastes space in ConstantPool
coleenp
parents:
diff
changeset
|
2 * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved. |
5daaddd917a1
8006040: NPG: on_stack processing wastes space in ConstantPool
coleenp
parents:
diff
changeset
|
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
5daaddd917a1
8006040: NPG: on_stack processing wastes space in ConstantPool
coleenp
parents:
diff
changeset
|
4 * |
5daaddd917a1
8006040: NPG: on_stack processing wastes space in ConstantPool
coleenp
parents:
diff
changeset
|
5 * This code is free software; you can redistribute it and/or modify it |
5daaddd917a1
8006040: NPG: on_stack processing wastes space in ConstantPool
coleenp
parents:
diff
changeset
|
6 * under the terms of the GNU General Public License version 2 only, as |
5daaddd917a1
8006040: NPG: on_stack processing wastes space in ConstantPool
coleenp
parents:
diff
changeset
|
7 * published by the Free Software Foundation. |
5daaddd917a1
8006040: NPG: on_stack processing wastes space in ConstantPool
coleenp
parents:
diff
changeset
|
8 * |
5daaddd917a1
8006040: NPG: on_stack processing wastes space in ConstantPool
coleenp
parents:
diff
changeset
|
9 * This code is distributed in the hope that it will be useful, but WITHOUT |
5daaddd917a1
8006040: NPG: on_stack processing wastes space in ConstantPool
coleenp
parents:
diff
changeset
|
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
5daaddd917a1
8006040: NPG: on_stack processing wastes space in ConstantPool
coleenp
parents:
diff
changeset
|
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
5daaddd917a1
8006040: NPG: on_stack processing wastes space in ConstantPool
coleenp
parents:
diff
changeset
|
12 * version 2 for more details (a copy is included in the LICENSE file that |
5daaddd917a1
8006040: NPG: on_stack processing wastes space in ConstantPool
coleenp
parents:
diff
changeset
|
13 * accompanied this code). |
5daaddd917a1
8006040: NPG: on_stack processing wastes space in ConstantPool
coleenp
parents:
diff
changeset
|
14 * |
5daaddd917a1
8006040: NPG: on_stack processing wastes space in ConstantPool
coleenp
parents:
diff
changeset
|
15 * You should have received a copy of the GNU General Public License version |
5daaddd917a1
8006040: NPG: on_stack processing wastes space in ConstantPool
coleenp
parents:
diff
changeset
|
16 * 2 along with this work; if not, write to the Free Software Foundation, |
5daaddd917a1
8006040: NPG: on_stack processing wastes space in ConstantPool
coleenp
parents:
diff
changeset
|
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
5daaddd917a1
8006040: NPG: on_stack processing wastes space in ConstantPool
coleenp
parents:
diff
changeset
|
18 * |
5daaddd917a1
8006040: NPG: on_stack processing wastes space in ConstantPool
coleenp
parents:
diff
changeset
|
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
5daaddd917a1
8006040: NPG: on_stack processing wastes space in ConstantPool
coleenp
parents:
diff
changeset
|
20 * or visit www.oracle.com if you need additional information or have any |
5daaddd917a1
8006040: NPG: on_stack processing wastes space in ConstantPool
coleenp
parents:
diff
changeset
|
21 * questions. |
5daaddd917a1
8006040: NPG: on_stack processing wastes space in ConstantPool
coleenp
parents:
diff
changeset
|
22 * |
5daaddd917a1
8006040: NPG: on_stack processing wastes space in ConstantPool
coleenp
parents:
diff
changeset
|
23 */ |
5daaddd917a1
8006040: NPG: on_stack processing wastes space in ConstantPool
coleenp
parents:
diff
changeset
|
24 |
5daaddd917a1
8006040: NPG: on_stack processing wastes space in ConstantPool
coleenp
parents:
diff
changeset
|
25 #ifndef SHARE_VM_CLASSFILE_METADATAONSTACKMARK_HPP |
5daaddd917a1
8006040: NPG: on_stack processing wastes space in ConstantPool
coleenp
parents:
diff
changeset
|
26 #define SHARE_VM_CLASSFILE_METADATAONSTACKMARK_HPP |
5daaddd917a1
8006040: NPG: on_stack processing wastes space in ConstantPool
coleenp
parents:
diff
changeset
|
27 |
5daaddd917a1
8006040: NPG: on_stack processing wastes space in ConstantPool
coleenp
parents:
diff
changeset
|
28 #include "memory/allocation.hpp" |
20619
b12a2a9b05ca
8056240: Investigate increased GC remark time after class unloading changes in CRM Fuse
stefank
parents:
7949
diff
changeset
|
29 #include "utilities/chunkedList.hpp" |
7949
5daaddd917a1
8006040: NPG: on_stack processing wastes space in ConstantPool
coleenp
parents:
diff
changeset
|
30 |
5daaddd917a1
8006040: NPG: on_stack processing wastes space in ConstantPool
coleenp
parents:
diff
changeset
|
31 class Metadata; |
5daaddd917a1
8006040: NPG: on_stack processing wastes space in ConstantPool
coleenp
parents:
diff
changeset
|
32 |
20619
b12a2a9b05ca
8056240: Investigate increased GC remark time after class unloading changes in CRM Fuse
stefank
parents:
7949
diff
changeset
|
33 typedef ChunkedList<Metadata*, mtInternal> MetadataOnStackBuffer; |
b12a2a9b05ca
8056240: Investigate increased GC remark time after class unloading changes in CRM Fuse
stefank
parents:
7949
diff
changeset
|
34 |
7949
5daaddd917a1
8006040: NPG: on_stack processing wastes space in ConstantPool
coleenp
parents:
diff
changeset
|
35 // Helper class to mark and unmark metadata used on the stack as either handles |
5daaddd917a1
8006040: NPG: on_stack processing wastes space in ConstantPool
coleenp
parents:
diff
changeset
|
36 // or executing methods, so that it can't be deleted during class redefinition |
5daaddd917a1
8006040: NPG: on_stack processing wastes space in ConstantPool
coleenp
parents:
diff
changeset
|
37 // and class unloading. |
5daaddd917a1
8006040: NPG: on_stack processing wastes space in ConstantPool
coleenp
parents:
diff
changeset
|
38 // This is also used for other things that can be deallocated, like class |
5daaddd917a1
8006040: NPG: on_stack processing wastes space in ConstantPool
coleenp
parents:
diff
changeset
|
39 // metadata during parsing, relocated methods, and methods in backtraces. |
5daaddd917a1
8006040: NPG: on_stack processing wastes space in ConstantPool
coleenp
parents:
diff
changeset
|
40 class MetadataOnStackMark : public StackObj { |
5daaddd917a1
8006040: NPG: on_stack processing wastes space in ConstantPool
coleenp
parents:
diff
changeset
|
41 NOT_PRODUCT(static bool _is_active;) |
20619
b12a2a9b05ca
8056240: Investigate increased GC remark time after class unloading changes in CRM Fuse
stefank
parents:
7949
diff
changeset
|
42 |
b12a2a9b05ca
8056240: Investigate increased GC remark time after class unloading changes in CRM Fuse
stefank
parents:
7949
diff
changeset
|
43 static volatile MetadataOnStackBuffer* _used_buffers; |
b12a2a9b05ca
8056240: Investigate increased GC remark time after class unloading changes in CRM Fuse
stefank
parents:
7949
diff
changeset
|
44 static volatile MetadataOnStackBuffer* _free_buffers; |
b12a2a9b05ca
8056240: Investigate increased GC remark time after class unloading changes in CRM Fuse
stefank
parents:
7949
diff
changeset
|
45 |
b12a2a9b05ca
8056240: Investigate increased GC remark time after class unloading changes in CRM Fuse
stefank
parents:
7949
diff
changeset
|
46 static MetadataOnStackBuffer* allocate_buffer(); |
b12a2a9b05ca
8056240: Investigate increased GC remark time after class unloading changes in CRM Fuse
stefank
parents:
7949
diff
changeset
|
47 static void retire_buffer(MetadataOnStackBuffer* buffer); |
b12a2a9b05ca
8056240: Investigate increased GC remark time after class unloading changes in CRM Fuse
stefank
parents:
7949
diff
changeset
|
48 |
7949
5daaddd917a1
8006040: NPG: on_stack processing wastes space in ConstantPool
coleenp
parents:
diff
changeset
|
49 public: |
20619
b12a2a9b05ca
8056240: Investigate increased GC remark time after class unloading changes in CRM Fuse
stefank
parents:
7949
diff
changeset
|
50 MetadataOnStackMark(bool visit_code_cache); |
b12a2a9b05ca
8056240: Investigate increased GC remark time after class unloading changes in CRM Fuse
stefank
parents:
7949
diff
changeset
|
51 ~MetadataOnStackMark(); |
b12a2a9b05ca
8056240: Investigate increased GC remark time after class unloading changes in CRM Fuse
stefank
parents:
7949
diff
changeset
|
52 |
b12a2a9b05ca
8056240: Investigate increased GC remark time after class unloading changes in CRM Fuse
stefank
parents:
7949
diff
changeset
|
53 static void record(Metadata* m, Thread* thread); |
b12a2a9b05ca
8056240: Investigate increased GC remark time after class unloading changes in CRM Fuse
stefank
parents:
7949
diff
changeset
|
54 static void retire_buffer_for_thread(Thread* thread); |
b12a2a9b05ca
8056240: Investigate increased GC remark time after class unloading changes in CRM Fuse
stefank
parents:
7949
diff
changeset
|
55 static bool has_buffer_for_thread(Thread* thread); |
7949
5daaddd917a1
8006040: NPG: on_stack processing wastes space in ConstantPool
coleenp
parents:
diff
changeset
|
56 }; |
5daaddd917a1
8006040: NPG: on_stack processing wastes space in ConstantPool
coleenp
parents:
diff
changeset
|
57 |
5daaddd917a1
8006040: NPG: on_stack processing wastes space in ConstantPool
coleenp
parents:
diff
changeset
|
58 #endif // SHARE_VM_CLASSFILE_METADATAONSTACKMARK_HPP |