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#include "ti_dump.h"
33
34#include <limits>
35
36
37#include "art_jvmti.h"
38#include "base/mutex.h"
39#include "events-inl.h"
40#include "runtime_callbacks.h"
41#include "scoped_thread_state_change-inl.h"
42#include "thread-inl.h"
43#include "thread_list.h"
44
45namespace openjdkjvmti {
46
47struct DumpCallback : public art::RuntimeSigQuitCallback {
48  void SigQuit() OVERRIDE REQUIRES_SHARED(art::Locks::mutator_lock_) {
49    art::Thread* thread = art::Thread::Current();
50    art::ScopedThreadSuspension sts(thread, art::ThreadState::kNative);
51    event_handler->DispatchEvent<ArtJvmtiEvent::kDataDumpRequest>(nullptr);
52  }
53
54  EventHandler* event_handler = nullptr;
55};
56
57static DumpCallback gDumpCallback;
58
59void DumpUtil::Register(EventHandler* handler) {
60  gDumpCallback.event_handler = handler;
61  art::ScopedThreadStateChange stsc(art::Thread::Current(),
62                                    art::ThreadState::kWaitingForDebuggerToAttach);
63  art::ScopedSuspendAll ssa("Add sigquit callback");
64  art::Runtime::Current()->GetRuntimeCallbacks()->AddRuntimeSigQuitCallback(&gDumpCallback);
65}
66
67void DumpUtil::Unregister() {
68  art::ScopedThreadStateChange stsc(art::Thread::Current(),
69                                    art::ThreadState::kWaitingForDebuggerToAttach);
70  art::ScopedSuspendAll ssa("Remove sigquit callback");
71  art::Runtime::Current()->GetRuntimeCallbacks()->RemoveRuntimeSigQuitCallback(&gDumpCallback);
72}
73
74}  // namespace openjdkjvmti
75