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 <atomic>
18
19 #include "android-base/logging.h"
20 #include "jni.h"
21 #include "scoped_local_ref.h"
22 #include "scoped_primitive_array.h"
23
24 #include "jvmti.h"
25
26 // Test infrastructure
27 #include "jvmti_helper.h"
28 #include "test_env.h"
29
30 namespace art {
31 namespace Test1920NativeSuspendMonitor {
32
33 std::atomic<bool> should_pause(false);
34 std::atomic<bool> paused(false);
35 std::atomic<bool> done(false);
36 std::atomic<bool> started(false);
37
Java_art_Test1920_nativeSpin(JNIEnv * env,jclass)38 extern "C" JNIEXPORT void JNICALL Java_art_Test1920_nativeSpin(JNIEnv* env, jclass) {
39 jrawMonitorID mon;
40 if (JvmtiErrorToException(
41 env, jvmti_env, jvmti_env->CreateRawMonitor("Test1920 monitor", &mon))) {
42 return;
43 }
44 while (!done.load()) {
45 while (should_pause.load()) {
46 paused.store(true);
47 }
48 paused.store(false);
49 if (JvmtiErrorToException(env, jvmti_env, jvmti_env->RawMonitorEnter(mon))) {
50 return;
51 }
52 started.store(true);
53 if (JvmtiErrorToException(env, jvmti_env, jvmti_env->RawMonitorExit(mon))) {
54 return;
55 }
56 }
57 }
58
Java_art_Test1920_isNativeThreadSpinning(JNIEnv *,jclass)59 extern "C" JNIEXPORT jboolean JNICALL Java_art_Test1920_isNativeThreadSpinning(JNIEnv*, jclass) {
60 return started.load();
61 }
62
Java_art_Test1920_pause(JNIEnv *,jclass)63 extern "C" JNIEXPORT void JNICALL Java_art_Test1920_pause(JNIEnv*, jclass) {
64 should_pause.store(true);
65 paused.store(false);
66 while (!paused.load()) { }
67 }
Java_art_Test1920_resume(JNIEnv *,jclass)68 extern "C" JNIEXPORT void JNICALL Java_art_Test1920_resume(JNIEnv*, jclass) {
69 should_pause.store(false);
70 while (paused.load()) { }
71 }
72
Java_art_Test1920_reset(JNIEnv *,jclass)73 extern "C" JNIEXPORT void JNICALL Java_art_Test1920_reset(JNIEnv*, jclass) {
74 started.store(false);
75 }
Java_art_Test1920_nativeFinish(JNIEnv *,jclass)76 extern "C" JNIEXPORT void JNICALL Java_art_Test1920_nativeFinish(JNIEnv*, jclass) {
77 done.store(true);
78 }
79
80 } // namespace Test1920NativeSuspendMonitor
81 } // namespace art
82