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 #include <sstream>
36
37 #include "art_jvmti.h"
38 #include "base/mutex.h"
39 #include "deopt_manager.h"
40 #include "events-inl.h"
41 #include "runtime_callbacks.h"
42 #include "scoped_thread_state_change-inl.h"
43 #include "thread-current-inl.h"
44 #include "thread_list.h"
45
46 namespace openjdkjvmti {
47
48 struct DumpCallback : public art::RuntimeSigQuitCallback {
SigQuitopenjdkjvmti::DumpCallback49 void SigQuit() override REQUIRES_SHARED(art::Locks::mutator_lock_) {
50 art::Thread* thread = art::Thread::Current();
51 art::ScopedThreadSuspension sts(thread, art::ThreadState::kNative);
52 event_handler->DispatchEvent<ArtJvmtiEvent::kDataDumpRequest>(art::Thread::Current());
53 }
54
55 EventHandler* event_handler = nullptr;
56 };
57
58 static DumpCallback gDumpCallback;
59
Register(EventHandler * handler)60 void DumpUtil::Register(EventHandler* handler) {
61 gDumpCallback.event_handler = handler;
62 art::ScopedThreadStateChange stsc(art::Thread::Current(),
63 art::ThreadState::kWaitingForDebuggerToAttach);
64 art::ScopedSuspendAll ssa("Add sigquit callback");
65 art::Runtime::Current()->GetRuntimeCallbacks()->AddRuntimeSigQuitCallback(&gDumpCallback);
66 }
67
Unregister()68 void DumpUtil::Unregister() {
69 art::ScopedThreadStateChange stsc(art::Thread::Current(),
70 art::ThreadState::kWaitingForDebuggerToAttach);
71 art::ScopedSuspendAll ssa("Remove sigquit callback");
72 art::Runtime::Current()->GetRuntimeCallbacks()->RemoveRuntimeSigQuitCallback(&gDumpCallback);
73 }
74
DumpInternalState(jvmtiEnv * jvmti,char ** data)75 jvmtiError DumpUtil::DumpInternalState(jvmtiEnv *jvmti, char **data) {
76 art::Thread* self = art::Thread::Current();
77 if (jvmti == nullptr || self == nullptr) {
78 return ERR(INVALID_ENVIRONMENT);
79 } else if (data == nullptr) {
80 return ERR(NULL_POINTER);
81 }
82
83 std::stringstream ss;
84 // TODO Add more stuff on here.
85 DeoptManager::Get()->DumpDeoptInfo(self, ss);
86
87 jvmtiError err = OK;
88 JvmtiUniquePtr<char[]> res = CopyString(jvmti, ss.str().c_str(), &err);
89 *data = res.release();
90 return err;
91 }
92
93 } // namespace openjdkjvmti
94