1 /* Copyright (C) 2017 The Android Open Source Project
2  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
3  *
4  * This file implements interfaces from the file jvmti.h. This implementation
5  * is licensed under the same terms as the file jvmti.h.  The
6  * copyright and license information for the file jvmti.h follows.
7  *
8  * Copyright (c) 2003, 2011, Oracle and/or its affiliates. All rights reserved.
9  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
10  *
11  * This code is free software; you can redistribute it and/or modify it
12  * under the terms of the GNU General Public License version 2 only, as
13  * published by the Free Software Foundation.  Oracle designates this
14  * particular file as subject to the "Classpath" exception as provided
15  * by Oracle in the LICENSE file that accompanied this code.
16  *
17  * This code is distributed in the hope that it will be useful, but WITHOUT
18  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
19  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
20  * version 2 for more details (a copy is included in the LICENSE file that
21  * accompanied this code).
22  *
23  * You should have received a copy of the GNU General Public License version
24  * 2 along with this work; if not, write to the Free Software Foundation,
25  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
26  *
27  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
28  * or visit www.oracle.com if you need additional information or have any
29  * questions.
30  */
31 
32 #ifndef ART_OPENJDKJVMTI_TI_BREAKPOINT_H_
33 #define ART_OPENJDKJVMTI_TI_BREAKPOINT_H_
34 
35 #include "jni.h"
36 #include "jvmti.h"
37 
38 #include "base/mutex.h"
39 
40 namespace art {
41 class ArtMethod;
42 namespace mirror {
43 class Class;
44 }  // namespace mirror
45 }  // namespace art
46 
47 namespace openjdkjvmti {
48 
49 struct ArtJvmTiEnv;
50 class EventHandler;
51 
52 class Breakpoint {
53  public:
54   Breakpoint(art::ArtMethod* m, jlocation loc);
55 
56   // Get the hash code of this breakpoint.
57   size_t hash() const;
58 
59   bool operator==(const Breakpoint& other) const {
60     return method_ == other.method_ && location_ == other.location_;
61   }
62 
GetMethod()63   art::ArtMethod* GetMethod() const {
64     return method_;
65   }
66 
GetLocation()67   jlocation GetLocation() const {
68     return location_;
69   }
70 
71  private:
72   art::ArtMethod* method_;
73   jlocation location_;
74 };
75 
76 class BreakpointUtil {
77  public:
78   static void Register(EventHandler* eh);
79   static void Unregister();
80 
81   static jvmtiError SetBreakpoint(jvmtiEnv* env, jmethodID method, jlocation location);
82   static jvmtiError ClearBreakpoint(jvmtiEnv* env, jmethodID method, jlocation location);
83   // Used by class redefinition to remove breakpoints on redefined classes.
84   static void RemoveBreakpointsInClass(ArtJvmTiEnv* env, art::mirror::Class* klass)
85       REQUIRES_SHARED(art::Locks::mutator_lock_);
86 };
87 
88 }  // namespace openjdkjvmti
89 
90 namespace std {
91 template<> struct hash<openjdkjvmti::Breakpoint> {
92   size_t operator()(const openjdkjvmti::Breakpoint& b) const {
93     return b.hash();
94   }
95 };
96 
97 }  // namespace std
98 #endif  // ART_OPENJDKJVMTI_TI_BREAKPOINT_H_
99