mirror of
https://github.com/lax1dude/unsafe-memcpy-for-java.git
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55 lines
2.2 KiB
C
55 lines
2.2 KiB
C
/*
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* Copyright (c) 2024 lax1dude
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS “AS IS”
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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#include <jni.h>
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#include <stdlib.h>
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#include <stdint.h>
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#include <string.h>
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#include "utils.h"
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#define UNSAFE_MEMSET_IMPL(address, value, byteLength)\
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memset((void*)(address), (int)(value), (size_t)(byteLength));
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#define UNSAFE_MEMSET_BUFFER_IMPL(jniHandle, address, offset, value, byteLength)\
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uint64_t dstBuffer = (uint64_t)(*jniHandle)->GetDirectBufferAddress(jniHandle, address);\
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if(!dstBuffer) {\
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unsafeThrowNotDirectBuffer(jniHandle);\
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return;\
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}\
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UNSAFE_MEMSET_IMPL(dstBuffer + offset, value, byteLength);
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#define UNSAFE_MEMSET_ARRAY_IMPL(jniHandle, address, offset, value, byteLength)\
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uint64_t dstArray = (uint64_t)(*jniHandle)->GetPrimitiveArrayCritical(jniHandle, address, NULL);\
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if(!dstArray) {\
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unsafeThrowOutOfMemory(jniHandle);\
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return;\
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}\
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UNSAFE_MEMSET_IMPL(dstArray + offset, value, byteLength);\
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(*jniHandle)->ReleasePrimitiveArrayCritical(jniHandle, address, (void*)dstArray, JNI_COMMIT);
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