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
30class 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
73static 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
83TEST_VM(code, dependency_context) {
84 test_remove_dependent_nmethod(0);
85 test_remove_dependent_nmethod(1);
86 test_remove_dependent_nmethod(2);
87}
88