russell@unturf.com
0a580b313d
Authors: russell@unturf.com · brackishbert@gmail.com · foxhop.net · TimeHexOn.com Patches, unit tests, benchmarks, whitepaper, and outreach briefs. Public domain — no copyright claimed. Use freely.
51 lines
2 KiB
C
51 lines
2 KiB
C
/*
|
|
* Copyright (c) 2023, Oracle and/or its affiliates. All rights reserved.
|
|
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
|
|
*
|
|
* This code is free software; you can redistribute it and/or modify it
|
|
* under the terms of the GNU General Public License version 2 only, as
|
|
* published by the Free Software Foundation.
|
|
*
|
|
* This code is distributed in the hope that it will be useful, but WITHOUT
|
|
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
|
* version 2 for more details (a copy is included in the LICENSE file that
|
|
* accompanied this code).
|
|
*
|
|
* You should have received a copy of the GNU General Public License version
|
|
* 2 along with this work; if not, write to the Free Software Foundation,
|
|
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
*
|
|
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
|
|
* or visit www.oracle.com if you need additional information or have any
|
|
* questions.
|
|
*/
|
|
#include <stdint.h>
|
|
#include <stdlib.h>
|
|
#include "jni.h"
|
|
|
|
// private static native ByteBuffer newDirectByteBuffer(long addr, long size)
|
|
JNIEXPORT jobject JNICALL
|
|
Java_NewDirectByteBuffer_newDirectByteBuffer
|
|
(JNIEnv *env, jclass cls, jlong addr, jlong size)
|
|
{
|
|
// Create the direct byte buffer, freeing the native memory if an exception
|
|
// is thrown while constructing the buffer
|
|
return (*env)->NewDirectByteBuffer(env, (void*)(uintptr_t)addr, size);
|
|
}
|
|
|
|
// private static native long getDirectByteBufferCapacity(ByteBuffer buf)
|
|
JNIEXPORT jlong JNICALL
|
|
Java_NewDirectByteBuffer_getDirectByteBufferCapacity
|
|
(JNIEnv *env, jclass cls, jobject buf)
|
|
{
|
|
return (*env)->GetDirectBufferCapacity(env, buf);
|
|
}
|
|
|
|
// private static native long getDirectBufferAddress(ByteBuffer buf)
|
|
JNIEXPORT jlong JNICALL
|
|
Java_NewDirectByteBuffer_getDirectBufferAddress
|
|
(JNIEnv *env, jclass cls, jobject buf)
|
|
{
|
|
return (jlong)(uintptr_t)(*env)->GetDirectBufferAddress(env, buf);
|
|
}
|