| /* |
| * Copyright (C) 2021 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 "base/utils.h" |
| #include "gc/heap.h" |
| #include "jni.h" |
| #include "runtime.h" |
| #include <stddef.h> |
| |
| namespace art { |
| namespace HugeNativeBuf { |
| |
| static constexpr size_t HUGE_SIZE = 10'000'000; |
| |
| extern "C" JNIEXPORT jobject JNICALL Java_Main_getHugeNativeBuffer( |
| JNIEnv* env, [[maybe_unused]] jclass klass) { |
| char* buffer = new char[HUGE_SIZE]; |
| return env->NewDirectByteBuffer(buffer, HUGE_SIZE); |
| } |
| |
| extern "C" JNIEXPORT void JNICALL Java_Main_deleteHugeNativeBuffer( |
| JNIEnv* env, [[maybe_unused]] jclass klass, jobject jbuffer) { |
| delete [] static_cast<char*>(env->GetDirectBufferAddress(jbuffer)); |
| } |
| |
| extern "C" JNIEXPORT jint JNICALL Java_Main_getGcNum( |
| [[maybe_unused]] JNIEnv* env, [[maybe_unused]] jclass klass) { |
| return Runtime::Current()->GetHeap()->GetCurrentGcNum(); |
| } |
| |
| } // namespace HugeNativeBuf |
| } // namespace art |