test/1942-suspend-raw-monitor-exit/native_suspend_monitor.cc

/*
 * Copyright (C) 2017 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#include <atomic>

#include "android-base/logging.h"
#include "jni.h"
#include "scoped_local_ref.h"
#include "scoped_primitive_array.h"

#include "jvmti.h"

// Test infrastructure
#include "jvmti_helper.h"
#include "test_env.h"

namespace art {
namespace Test1942SuspendRawMonitorExit {

jrawMonitorID mon;
std::atomic<bool> should_pause(true);
std::atomic<bool> paused(false);
std::atomic<bool> done(false);
std::atomic<bool> locked(false);

extern "C" JNIEXPORT void JNICALL Java_art_Test1942_nativeRun(JNIEnv* env, jclass) {
  if (JvmtiErrorToException(
      env, jvmti_env, jvmti_env->CreateRawMonitor("Test1942 monitor", &mon))) {
    return;
  }
  if (JvmtiErrorToException(env, jvmti_env, jvmti_env->RawMonitorEnter(mon))) {
    return;
  }
  locked.store(true);
  while (should_pause.load()) {
    paused.store(true);
  }
  paused.store(false);
  if (JvmtiErrorToException(env, jvmti_env, jvmti_env->RawMonitorExit(mon))) {
    return;
  }
  locked.store(false);
}

extern "C" JNIEXPORT jboolean JNICALL Java_art_Test1942_isLocked(JNIEnv*, jclass) {
  return locked.load();
}

extern "C" JNIEXPORT void JNICALL Java_art_Test1942_waitForPause(JNIEnv*, jclass) {
  while (!paused.load()) { }
}
extern "C" JNIEXPORT void JNICALL Java_art_Test1942_resume(JNIEnv*, jclass) {
  should_pause.store(false);
  while (paused.load()) { }
}

extern "C" JNIEXPORT void JNICALL Java_art_Test1942_grabRawMonitor(JNIEnv* env, jclass) {
  if (JvmtiErrorToException(env, jvmti_env, jvmti_env->RawMonitorEnter(mon))) {
    return;
  }
  if (JvmtiErrorToException(env, jvmti_env, jvmti_env->RawMonitorExit(mon))) {
    return;
  }
}

}  // namespace Test1942SuspendRawMonitorExit
}  // namespace art