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> 32 static void Dealloc(T* t) { 33 jvmti_env->Deallocate(reinterpret_cast<unsigned char*>(t)); 34 } 35 36 template <typename T, typename ...Rest> 37 static void Dealloc(T* t, Rest... rs) { 38 Dealloc(t); 39 Dealloc(rs...); 40 } 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 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 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 91 extern "C" JNIEXPORT void JNICALL Java_art_Test1951_waitForStart(JNIEnv*, jclass) { 92 while (!started) {} 93 } 94 95 extern "C" JNIEXPORT void JNICALL Java_art_Test1951_otherThreadResume(JNIEnv*, jclass) { 96 resumed = true; 97 } 98 99 extern "C" JNIEXPORT jboolean JNICALL Java_art_Test1951_otherThreadProgressed(JNIEnv*, jclass) { 100 return progress; 101 } 102 103 } // namespace Test1951MonitorEnterNoSuspend 104 } // namespace art 105
