46 lines
1.4 KiB
C++
46 lines
1.4 KiB
C++
/*
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* Copyright (C) 2021 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "base/utils.h"
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#include "gc/heap.h"
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#include "jni.h"
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#include "runtime.h"
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#include <stddef.h>
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namespace art {
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namespace HugeNativeBuf {
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static constexpr size_t HUGE_SIZE = 10'000'000;
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extern "C" JNIEXPORT jobject JNICALL Java_Main_getHugeNativeBuffer(
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JNIEnv* env, jclass klass ATTRIBUTE_UNUSED) {
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char* buffer = new char[HUGE_SIZE];
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return env->NewDirectByteBuffer(buffer, HUGE_SIZE);
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}
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extern "C" JNIEXPORT void JNICALL Java_Main_deleteHugeNativeBuffer(
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JNIEnv* env, jclass klass ATTRIBUTE_UNUSED, jobject jbuffer) {
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delete [] static_cast<char*>(env->GetDirectBufferAddress(jbuffer));
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}
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extern "C" JNIEXPORT jint JNICALL Java_Main_getGcNum(
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JNIEnv* env ATTRIBUTE_UNUSED, jclass klass ATTRIBUTE_UNUSED) {
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return Runtime::Current()->GetHeap()->GetCurrentGcNum();
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}
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} // namespace HugeNativeBuf
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} // namespace art
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