1 /*
2 * Copyright (C) 2017 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include <signal.h>
18 #include <sys/types.h>
19
20 #include <atomic>
21
22 #include "android-base/logging.h"
23 #include "android-base/macros.h"
24 #include "jni.h"
25 #include "jvmti.h"
26
27 // Test infrastructure
28 #include "jvmti_helper.h"
29 #include "test_env.h"
30
31 namespace art {
32 namespace Test933MiscEvents {
33
34 static std::atomic<bool> saw_dump_request(false);
35
DumpRequestCallback(jvmtiEnv * jenv ATTRIBUTE_UNUSED)36 static void DumpRequestCallback(jvmtiEnv* jenv ATTRIBUTE_UNUSED) {
37 printf("Received dump request.\n");
38 saw_dump_request.store(true, std::memory_order::memory_order_relaxed);
39 }
40
Java_art_Test933_testSigQuit(JNIEnv * env,jclass Main_klass ATTRIBUTE_UNUSED)41 extern "C" JNIEXPORT void JNICALL Java_art_Test933_testSigQuit(
42 JNIEnv* env, jclass Main_klass ATTRIBUTE_UNUSED) {
43 jvmtiEventCallbacks callbacks;
44 memset(&callbacks, 0, sizeof(jvmtiEventCallbacks));
45 callbacks.DataDumpRequest = DumpRequestCallback;
46 jvmtiError ret = jvmti_env->SetEventCallbacks(&callbacks, sizeof(callbacks));
47 if (JvmtiErrorToException(env, jvmti_env, ret)) {
48 return;
49 }
50
51 ret = jvmti_env->SetEventNotificationMode(JVMTI_ENABLE,
52 JVMTI_EVENT_DATA_DUMP_REQUEST,
53 nullptr);
54 if (JvmtiErrorToException(env, jvmti_env, ret)) {
55 return;
56 }
57
58 // Send sigquit to self.
59 kill(getpid(), SIGQUIT);
60
61 // Busy-wait for request.
62 for (;;) {
63 sleep(1);
64 if (saw_dump_request.load(std::memory_order::memory_order_relaxed)) {
65 break;
66 }
67 }
68
69 ret = jvmti_env->SetEventNotificationMode(JVMTI_DISABLE, JVMTI_EVENT_DATA_DUMP_REQUEST, nullptr);
70 JvmtiErrorToException(env, jvmti_env, ret);
71 }
72
73 } // namespace Test933MiscEvents
74 } // namespace art
75