864d304156
Reflects refactoring of JNI helper code that depends on private methods within libnativehelper. Bug: 151443957 Test: Treehugger Change-Id: I7af128f42ae89a77a8e3fb113ea533331153c535 Merged-In: I7af128f42ae89a77a8e3fb113ea533331153c535 Exempt-From-Owner-Approval: cherry pick (cherry picked from commit 329c612e3d5ae440bf13e1f5fc9a4012263524e9)
47 lines
1.6 KiB
C++
47 lines
1.6 KiB
C++
/*
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* Copyright (C) 2008 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 "android_nio_utils.h"
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#include <nativehelper/JNIPlatformHelp.h>
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namespace android {
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AutoBufferPointer::AutoBufferPointer(JNIEnv* env, jobject nioBuffer, jboolean commit)
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: fEnv(env), fCommit(commit) {
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jlong pointer = jniGetNioBufferPointer(fEnv, nioBuffer);
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if (pointer != 0L) {
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// Buffer is backed by a direct buffer.
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fArray = nullptr;
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fElements = nullptr;
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fPointer = reinterpret_cast<void*>(pointer);
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} else {
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// Buffer is backed by a managed array.
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jint byteOffset = jniGetNioBufferBaseArrayOffset(fEnv, nioBuffer);
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fArray = jniGetNioBufferBaseArray(fEnv, nioBuffer);
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fElements = fEnv->GetPrimitiveArrayCritical(fArray, /* isCopy= */ nullptr);
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fPointer = reinterpret_cast<void*>(reinterpret_cast<char*>(fElements) + byteOffset);
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}
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}
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AutoBufferPointer::~AutoBufferPointer() {
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if (nullptr != fArray) {
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fEnv->ReleasePrimitiveArrayCritical(fArray, fElements, fCommit ? 0 : JNI_ABORT);
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}
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}
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} // namespace android
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