author | tschatzl |
Sat, 18 May 2019 22:11:25 +0200 | |
changeset 54934 | 39814e0a8964 |
parent 53244 | 9807daeb47c4 |
permissions | -rw-r--r-- |
40905 | 1 |
/* |
53244
9807daeb47c4
8216167: Update include guards to reflect correct directories
coleenp
parents:
47216
diff
changeset
|
2 |
* Copyright (c) 2016, 2019, Oracle and/or its affiliates. All rights reserved. |
40905 | 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 |
* |
|
19 |
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
|
20 |
* or visit www.oracle.com if you need additional information or have any |
|
21 |
* questions. |
|
22 |
*/ |
|
23 |
||
53244
9807daeb47c4
8216167: Update include guards to reflect correct directories
coleenp
parents:
47216
diff
changeset
|
24 |
#ifndef SHARE_GC_G1_G1CODEROOTSETTABLE_HPP |
9807daeb47c4
8216167: Update include guards to reflect correct directories
coleenp
parents:
47216
diff
changeset
|
25 |
#define SHARE_GC_G1_G1CODEROOTSETTABLE_HPP |
40905 | 26 |
|
27 |
#include "utilities/hashtable.hpp" |
|
28 |
||
29 |
class nmethod; |
|
30 |
||
31 |
class G1CodeRootSetTable : public Hashtable<nmethod*, mtGC> { |
|
32 |
friend class G1CodeRootSetTest; |
|
33 |
typedef HashtableEntry<nmethod*, mtGC> Entry; |
|
34 |
||
35 |
static G1CodeRootSetTable* volatile _purge_list; |
|
36 |
||
37 |
G1CodeRootSetTable* _purge_next; |
|
38 |
||
39 |
unsigned int compute_hash(nmethod* nm) { |
|
40 |
uintptr_t hash = (uintptr_t)nm; |
|
41 |
return hash ^ (hash >> 7); // code heap blocks are 128byte aligned |
|
42 |
} |
|
43 |
||
44 |
void remove_entry(Entry* e, Entry* previous); |
|
45 |
Entry* new_entry(nmethod* nm); |
|
46 |
||
47 |
public: |
|
48 |
G1CodeRootSetTable(int size) : Hashtable<nmethod*, mtGC>(size, sizeof(Entry)), _purge_next(NULL) {} |
|
49 |
~G1CodeRootSetTable(); |
|
50 |
||
51 |
// Needs to be protected by locks |
|
52 |
bool add(nmethod* nm); |
|
53 |
bool remove(nmethod* nm); |
|
54 |
||
55 |
// Can be called without locking |
|
56 |
bool contains(nmethod* nm); |
|
57 |
||
58 |
int entry_size() const { return BasicHashtable<mtGC>::entry_size(); } |
|
59 |
||
60 |
void copy_to(G1CodeRootSetTable* new_table); |
|
61 |
void nmethods_do(CodeBlobClosure* blk); |
|
62 |
||
63 |
template<typename CB> |
|
64 |
int remove_if(CB& should_remove); |
|
65 |
||
66 |
static void purge_list_append(G1CodeRootSetTable* tbl); |
|
67 |
static void purge(); |
|
68 |
||
69 |
static size_t static_mem_size() { |
|
70 |
return sizeof(_purge_list); |
|
71 |
} |
|
72 |
||
73 |
size_t mem_size(); |
|
74 |
}; |
|
75 |
||
53244
9807daeb47c4
8216167: Update include guards to reflect correct directories
coleenp
parents:
47216
diff
changeset
|
76 |
#endif // SHARE_GC_G1_G1CODEROOTSETTABLE_HPP |