/*
* 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
Messung V0.5 in Prozent C=61 H=90 G=76
¤ Dauer der Verarbeitung: 0.12 Sekunden
(vorverarbeitet am 2026-06-29)
¤
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