author | zgu |
Wed, 27 Nov 2019 11:52:57 -0500 | |
changeset 59296 | 9186be5c78ba |
permissions | -rw-r--r-- |
59296
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
1 |
/* |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
2 |
* Copyright (c) 2019, Red Hat, Inc. All rights reserved. |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
3 |
* |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
4 |
* This code is free software; you can redistribute it and/or modify it |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
5 |
* under the terms of the GNU General Public License version 2 only, as |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
6 |
* published by the Free Software Foundation. |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
7 |
* |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
8 |
* This code is distributed in the hope that it will be useful, but WITHOUT |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
9 |
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
10 |
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
11 |
* version 2 for more details (a copy is included in the LICENSE file that |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
12 |
* accompanied this code). |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
13 |
* |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
14 |
* You should have received a copy of the GNU General Public License version |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
15 |
* 2 along with this work; if not, write to the Free Software Foundation, |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
16 |
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
17 |
* |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
18 |
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
19 |
* or visit www.oracle.com if you need additional information or have any |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
20 |
* questions. |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
21 |
* |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
22 |
*/ |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
23 |
|
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
24 |
#ifndef SHARE_GC_SHENANDOAH_SHENANDOAHNMETHOD_HPP |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
25 |
#define SHARE_GC_SHENANDOAH_SHENANDOAHNMETHOD_HPP |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
26 |
|
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
27 |
#include "code/nmethod.hpp" |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
28 |
#include "gc/shenandoah/shenandoahHeap.hpp" |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
29 |
#include "gc/shenandoah/shenandoahLock.hpp" |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
30 |
#include "memory/allocation.hpp" |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
31 |
#include "utilities/growableArray.hpp" |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
32 |
|
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
33 |
// ShenandoahNMethod tuple records the internal locations of oop slots within reclocation stream in |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
34 |
// the nmethod. This allows us to quickly scan the oops without doing the nmethod-internal scans, |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
35 |
// that sometimes involves parsing the machine code. Note it does not record the oops themselves, |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
36 |
// because it would then require handling these tuples as the new class of roots. |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
37 |
class ShenandoahNMethod : public CHeapObj<mtGC> { |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
38 |
private: |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
39 |
nmethod* const _nm; |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
40 |
oop** _oops; |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
41 |
int _oops_count; |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
42 |
bool _has_non_immed_oops; |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
43 |
bool _unregistered; |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
44 |
ShenandoahReentrantLock _lock; |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
45 |
|
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
46 |
public: |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
47 |
ShenandoahNMethod(nmethod *nm, GrowableArray<oop*>& oops, bool has_non_immed_oops); |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
48 |
~ShenandoahNMethod(); |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
49 |
|
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
50 |
inline nmethod* nm() const; |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
51 |
inline ShenandoahReentrantLock* lock(); |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
52 |
void oops_do(OopClosure* oops, bool fix_relocations = false); |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
53 |
// Update oops when the nmethod is re-registered |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
54 |
void update(); |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
55 |
|
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
56 |
bool has_cset_oops(ShenandoahHeap* heap); |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
57 |
|
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
58 |
inline int oop_count() const; |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
59 |
inline bool has_oops() const; |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
60 |
|
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
61 |
inline void mark_unregistered(); |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
62 |
inline bool is_unregistered() const; |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
63 |
|
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
64 |
static ShenandoahNMethod* for_nmethod(nmethod* nm); |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
65 |
static inline ShenandoahReentrantLock* lock_for_nmethod(nmethod* nm); |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
66 |
|
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
67 |
static void heal_nmethod(nmethod* nm); |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
68 |
static inline void disarm_nmethod(nmethod* nm); |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
69 |
|
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
70 |
static inline ShenandoahNMethod* gc_data(nmethod* nm); |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
71 |
static inline void attach_gc_data(nmethod* nm, ShenandoahNMethod* gc_data); |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
72 |
|
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
73 |
void assert_alive_and_correct() NOT_DEBUG_RETURN; |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
74 |
void assert_same_oops(bool allow_dead = false) NOT_DEBUG_RETURN; |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
75 |
static void assert_no_oops(nmethod* nm, bool allow_dea = false) NOT_DEBUG_RETURN; |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
76 |
|
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
77 |
private: |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
78 |
bool has_non_immed_oops() const { return _has_non_immed_oops; } |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
79 |
static void detect_reloc_oops(nmethod* nm, GrowableArray<oop*>& oops, bool& _has_non_immed_oops); |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
80 |
}; |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
81 |
|
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
82 |
class ShenandoahNMethodTable; |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
83 |
|
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
84 |
// An opaque snapshot of current nmethod table for iteration |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
85 |
class ShenandoahNMethodTableSnapshot : public CHeapObj<mtGC> { |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
86 |
friend class ShenandoahNMethodTable; |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
87 |
private: |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
88 |
ShenandoahHeap* const _heap; |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
89 |
ShenandoahNMethodTable* _table; |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
90 |
ShenandoahNMethod** const _array; |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
91 |
const int _length; |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
92 |
|
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
93 |
DEFINE_PAD_MINUS_SIZE(0, DEFAULT_CACHE_LINE_SIZE, sizeof(volatile size_t)); |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
94 |
volatile size_t _claimed; |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
95 |
DEFINE_PAD_MINUS_SIZE(1, DEFAULT_CACHE_LINE_SIZE, 0); |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
96 |
|
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
97 |
public: |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
98 |
ShenandoahNMethodTableSnapshot(ShenandoahNMethodTable* table); |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
99 |
|
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
100 |
template<bool CSET_FILTER> |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
101 |
void parallel_blobs_do(CodeBlobClosure *f); |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
102 |
|
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
103 |
void concurrent_nmethods_do(NMethodClosure* cl); |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
104 |
}; |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
105 |
|
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
106 |
class ShenandoahNMethodTable : public CHeapObj<mtGC> { |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
107 |
friend class ShenandoahNMethodTableSnapshot; |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
108 |
private: |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
109 |
enum { |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
110 |
minSize = 1024 |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
111 |
}; |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
112 |
|
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
113 |
ShenandoahHeap* const _heap; |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
114 |
ShenandoahNMethod** _array; |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
115 |
int _size; |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
116 |
int _index; |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
117 |
ShenandoahLock _lock; |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
118 |
bool _iteration_in_progress; |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
119 |
|
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
120 |
public: |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
121 |
ShenandoahNMethodTable(); |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
122 |
~ShenandoahNMethodTable(); |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
123 |
|
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
124 |
void register_nmethod(nmethod* nm); |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
125 |
void unregister_nmethod(nmethod* nm); |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
126 |
void flush_nmethod(nmethod* nm); |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
127 |
|
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
128 |
bool contain(nmethod* nm) const; |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
129 |
int length() const { return _index; } |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
130 |
|
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
131 |
// Table iteration support |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
132 |
ShenandoahNMethodTableSnapshot* snapshot_for_iteration(); |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
133 |
void finish_iteration(ShenandoahNMethodTableSnapshot* snapshot); |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
134 |
|
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
135 |
void assert_nmethods_alive_and_correct() NOT_DEBUG_RETURN; |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
136 |
private: |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
137 |
// Rebuild table and replace current one |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
138 |
void rebuild(int size); |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
139 |
|
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
140 |
bool is_full() const { |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
141 |
assert(_index <= _size, "Sanity"); |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
142 |
return _index == _size; |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
143 |
} |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
144 |
|
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
145 |
ShenandoahNMethod* at(int index) const; |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
146 |
int index_of(nmethod* nm) const; |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
147 |
void remove(int index); |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
148 |
void append(ShenandoahNMethod* snm); |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
149 |
|
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
150 |
inline bool iteration_in_progress() const; |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
151 |
void wait_until_concurrent_iteration_done(); |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
152 |
|
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
153 |
// Logging support |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
154 |
void log_register_nmethod(nmethod* nm); |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
155 |
void log_unregister_nmethod(nmethod* nm); |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
156 |
void log_flush_nmethod(nmethod* nm); |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
157 |
}; |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
158 |
|
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
159 |
class ShenandoahConcurrentNMethodIterator { |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
160 |
private: |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
161 |
ShenandoahNMethodTable* const _table; |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
162 |
ShenandoahNMethodTableSnapshot* _table_snapshot; |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
163 |
|
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
164 |
public: |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
165 |
ShenandoahConcurrentNMethodIterator(ShenandoahNMethodTable* table); |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
166 |
|
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
167 |
void nmethods_do_begin(); |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
168 |
void nmethods_do(NMethodClosure* cl); |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
169 |
void nmethods_do_end(); |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
170 |
}; |
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
171 |
|
9186be5c78ba
8228720: Shenandoah: Implementation of concurrent class unloading
zgu
parents:
diff
changeset
|
172 |
#endif // SHARE_GC_SHENANDOAH_SHENANDOAHNMETHOD_HPP |