52 lines
2.0 KiB
C
52 lines
2.0 KiB
C
/*
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* Copyright (c) 2023, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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#include <stdint.h>
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#include <stdlib.h>
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#include "jni.h"
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// private static native ByteBuffer newDirectByteBuffer(long addr, long size)
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JNIEXPORT jobject JNICALL
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Java_NewDirectByteBuffer_newDirectByteBuffer
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(JNIEnv *env, jclass cls, jlong addr, jlong size)
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{
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// Create the direct byte buffer, freeing the native memory if an exception
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// is thrown while constructing the buffer
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return (*env)->NewDirectByteBuffer(env, (void*)(uintptr_t)addr, size);
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}
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// private static native long getDirectByteBufferCapacity(ByteBuffer buf)
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JNIEXPORT jlong JNICALL
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Java_NewDirectByteBuffer_getDirectByteBufferCapacity
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(JNIEnv *env, jclass cls, jobject buf)
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{
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return (*env)->GetDirectBufferCapacity(env, buf);
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}
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// private static native long getDirectBufferAddress(ByteBuffer buf)
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JNIEXPORT jlong JNICALL
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Java_NewDirectByteBuffer_getDirectBufferAddress
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(JNIEnv *env, jclass cls, jobject buf)
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{
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return (jlong)(uintptr_t)(*env)->GetDirectBufferAddress(env, buf);
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}
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