1 | /* |
2 | * Copyright (c) 2016, 2018, Oracle and/or its affiliates. All rights reserved. |
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 | */ |
24 | |
25 | #include "precompiled.hpp" |
26 | #include "code/dependencyContext.hpp" |
27 | #include "code/nmethod.hpp" |
28 | #include "unittest.hpp" |
29 | |
30 | class TestDependencyContext { |
31 | public: |
32 | nmethod _nmethods[3]; |
33 | |
34 | nmethodBucket* volatile _dependency_context; |
35 | volatile uint64_t _last_cleanup; |
36 | |
37 | DependencyContext dependencies() { |
38 | DependencyContext depContext(&_dependency_context, &_last_cleanup); |
39 | return depContext; |
40 | } |
41 | |
42 | TestDependencyContext() |
43 | : _dependency_context(NULL), |
44 | _last_cleanup(0) { |
45 | CodeCache_lock->lock_without_safepoint_check(); |
46 | |
47 | _nmethods[0].clear_unloading_state(); |
48 | _nmethods[1].clear_unloading_state(); |
49 | _nmethods[2].clear_unloading_state(); |
50 | |
51 | dependencies().add_dependent_nmethod(&_nmethods[2]); |
52 | dependencies().add_dependent_nmethod(&_nmethods[1]); |
53 | dependencies().add_dependent_nmethod(&_nmethods[0]); |
54 | } |
55 | |
56 | ~TestDependencyContext() { |
57 | wipe(); |
58 | CodeCache_lock->unlock(); |
59 | } |
60 | |
61 | void wipe() { |
62 | DependencyContext ctx(&_dependency_context, &_last_cleanup); |
63 | nmethodBucket* b = ctx.dependencies(); |
64 | ctx.set_dependencies(NULL); |
65 | while (b != NULL) { |
66 | nmethodBucket* next = b->next(); |
67 | delete b; |
68 | b = next; |
69 | } |
70 | } |
71 | }; |
72 | |
73 | static void test_remove_dependent_nmethod(int id) { |
74 | TestDependencyContext c; |
75 | DependencyContext depContext = c.dependencies(); |
76 | |
77 | nmethod* nm = &c._nmethods[id]; |
78 | depContext.remove_dependent_nmethod(nm); |
79 | |
80 | NOT_PRODUCT(ASSERT_FALSE(depContext.is_dependent_nmethod(nm))); |
81 | } |
82 | |
83 | TEST_VM(code, dependency_context) { |
84 | test_remove_dependent_nmethod(0); |
85 | test_remove_dependent_nmethod(1); |
86 | test_remove_dependent_nmethod(2); |
87 | } |
88 | |