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 #include "art_jvmti.h"
37 #include "base/mutex.h"
38 #include "events-inl.h"
39 #include "runtime_callbacks.h"
40 #include "scoped_thread_state_change-inl.h"
41 #include "thread-current-inl.h"
42 #include "thread_list.h"
43
44 namespace openjdkjvmti {
45
46 struct DumpCallback : public art::RuntimeSigQuitCallback {
SigQuitopenjdkjvmti::DumpCallback47 void SigQuit() OVERRIDE REQUIRES_SHARED(art::Locks::mutator_lock_) {
48 art::Thread* thread = art::Thread::Current();
49 art::ScopedThreadSuspension sts(thread, art::ThreadState::kNative);
50 event_handler->DispatchEvent<ArtJvmtiEvent::kDataDumpRequest>(art::Thread::Current());
51 }
52
53 EventHandler* event_handler = nullptr;
54 };
55
56 static DumpCallback gDumpCallback;
57
Register(EventHandler * handler)58 void DumpUtil::Register(EventHandler* handler) {
59 gDumpCallback.event_handler = handler;
60 art::ScopedThreadStateChange stsc(art::Thread::Current(),
61 art::ThreadState::kWaitingForDebuggerToAttach);
62 art::ScopedSuspendAll ssa("Add sigquit callback");
63 art::Runtime::Current()->GetRuntimeCallbacks()->AddRuntimeSigQuitCallback(&gDumpCallback);
64 }
65
Unregister()66 void DumpUtil::Unregister() {
67 art::ScopedThreadStateChange stsc(art::Thread::Current(),
68 art::ThreadState::kWaitingForDebuggerToAttach);
69 art::ScopedSuspendAll ssa("Remove sigquit callback");
70 art::Runtime::Current()->GetRuntimeCallbacks()->RemoveRuntimeSigQuitCallback(&gDumpCallback);
71 }
72
73 } // namespace openjdkjvmti
74