1 /*
2 * Copyright (C) 2013 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 "jvmti.h"
20
21 // Test infrastructure
22 #include "jvmti_helper.h"
23 #include "scoped_local_ref.h"
24 #include "test_env.h"
25
26 namespace art {
27 namespace Test1951MonitorEnterNoSuspend {
28
29 using RawMonitorEnterNoSuspend = jvmtiError(*)(jvmtiEnv* env, jrawMonitorID mon);
30
31 template <typename T>
Dealloc(T * t)32 static void Dealloc(T* t) {
33 jvmti_env->Deallocate(reinterpret_cast<unsigned char*>(t));
34 }
35
36 template <typename T, typename ...Rest>
Dealloc(T * t,Rest...rs)37 static void Dealloc(T* t, Rest... rs) {
38 Dealloc(t);
39 Dealloc(rs...);
40 }
DeallocParams(jvmtiParamInfo * params,jint n_params)41 static void DeallocParams(jvmtiParamInfo* params, jint n_params) {
42 for (jint i = 0; i < n_params; i++) {
43 Dealloc(params[i].name);
44 }
45 }
46
GetNoSuspendFunction(JNIEnv * env)47 RawMonitorEnterNoSuspend GetNoSuspendFunction(JNIEnv* env) {
48 // Get the extensions.
49 jint n_ext = 0;
50 jvmtiExtensionFunctionInfo* infos = nullptr;
51 if (JvmtiErrorToException(env, jvmti_env, jvmti_env->GetExtensionFunctions(&n_ext, &infos))) {
52 return nullptr;
53 }
54 RawMonitorEnterNoSuspend result = nullptr;
55 for (jint i = 0; i < n_ext; i++) {
56 jvmtiExtensionFunctionInfo* cur_info = &infos[i];
57 if (strcmp("com.android.art.concurrent.raw_monitor_enter_no_suspend", cur_info->id) == 0) {
58 result = reinterpret_cast<RawMonitorEnterNoSuspend>(cur_info->func);
59 }
60 // Cleanup the cur_info
61 DeallocParams(cur_info->params, cur_info->param_count);
62 Dealloc(cur_info->id, cur_info->short_description, cur_info->params, cur_info->errors);
63 }
64 // Cleanup the array.
65 Dealloc(infos);
66 return result;
67 }
68
69 static std::atomic<bool> started(false);
70 static std::atomic<bool> resumed(false);
71 static std::atomic<bool> progress(false);
72
Java_art_Test1951_otherThreadStart(JNIEnv * env,jclass)73 extern "C" JNIEXPORT void JNICALL Java_art_Test1951_otherThreadStart(JNIEnv* env, jclass) {
74 jrawMonitorID mon;
75 if (JvmtiErrorToException(env, jvmti_env, jvmti_env->CreateRawMonitor("test 1951", &mon))) {
76 return;
77 }
78 RawMonitorEnterNoSuspend enter_func = GetNoSuspendFunction(env);
79 if (enter_func == nullptr) {
80 return;
81 }
82 started = true;
83 while (!resumed) {}
84 jvmtiError err = enter_func(jvmti_env, mon);
85 CHECK_EQ(err, JVMTI_ERROR_NONE);
86 progress = true;
87 err = jvmti_env->RawMonitorExit(mon);
88 CHECK_EQ(err, JVMTI_ERROR_NONE);
89 }
90
Java_art_Test1951_waitForStart(JNIEnv *,jclass)91 extern "C" JNIEXPORT void JNICALL Java_art_Test1951_waitForStart(JNIEnv*, jclass) {
92 while (!started) {}
93 }
94
Java_art_Test1951_otherThreadResume(JNIEnv *,jclass)95 extern "C" JNIEXPORT void JNICALL Java_art_Test1951_otherThreadResume(JNIEnv*, jclass) {
96 resumed = true;
97 }
98
Java_art_Test1951_otherThreadProgressed(JNIEnv *,jclass)99 extern "C" JNIEXPORT jboolean JNICALL Java_art_Test1951_otherThreadProgressed(JNIEnv*, jclass) {
100 return progress;
101 }
102
103 } // namespace Test1951MonitorEnterNoSuspend
104 } // namespace art
105