mirror of
https://github.com/lax1dude/unsafe-memcpy-for-java.git
synced 2024-09-16 07:35:59 -07:00
185 lines
9.2 KiB
C
185 lines
9.2 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 <string.h>
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#include <stdint.h>
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#include "utils.h"
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// =============== UNALIGNED VERSIONS ===============
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#define UNSAFE_MEMCPY_IMPL(dst, src, len) memcpy((void*)(dst), (const void*)(src), (size_t)(len))
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#define UNSAFE_MEMCPY_ARRAY_TO_NATIVE_IMPL(jniHandle, dstAddress, srcAddress, srcOffset, srcType, srcGetElements, srcReleaseElements, byteLength)\
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uint64_t srcArray = (uint64_t)(*jniHandle)->GetPrimitiveArrayCritical(jniHandle, srcAddress, NULL);\
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if(!srcArray) {\
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unsafeThrowOutOfMemory(jniHandle);\
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return;\
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}\
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UNSAFE_MEMCPY_IMPL(dstAddress, srcArray + srcOffset, byteLength);\
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(*jniHandle)->ReleasePrimitiveArrayCritical(jniHandle, srcAddress, (void*)srcArray, JNI_ABORT);
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#define UNSAFE_MEMCPY_BUFFER_TO_NATIVE_IMPL(jniHandle, dstAddress, srcAddress, srcOffset, byteLength)\
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uint64_t srcBuffer = (uint64_t)(*jniHandle)->GetDirectBufferAddress(jniHandle, srcAddress);\
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if(!srcBuffer) {\
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unsafeThrowNotDirectBuffer(jniHandle);\
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return;\
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}\
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UNSAFE_MEMCPY_IMPL(dstAddress, srcBuffer + srcOffset, byteLength);
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#define UNSAFE_MEMCPY_NATIVE_TO_BUFFER_IMPL(jniHandle, dstAddress, dstOffset, srcAddress, byteLength)\
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uint64_t dstBuffer = (uint64_t)(*jniHandle)->GetDirectBufferAddress(jniHandle, dstAddress);\
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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_MEMCPY_IMPL(dstBuffer + dstOffset, srcAddress, byteLength);
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#define UNSAFE_MEMCPY_BUFFER_TO_BUFFER_IMPL(jniHandle, dstAddress, dstOffset, srcAddress, srcOffset, byteLength)\
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uint64_t dstBuffer = (uint64_t)(*jniHandle)->GetDirectBufferAddress(jniHandle, dstAddress);\
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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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uint64_t srcBuffer = (uint64_t)(*jniHandle)->GetDirectBufferAddress(jniHandle, srcAddress);\
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if(!srcBuffer) {\
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unsafeThrowNotDirectBuffer(jniHandle);\
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return;\
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}\
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UNSAFE_MEMCPY_IMPL(dstBuffer + dstOffset, srcBuffer + srcOffset, byteLength);
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#define UNSAFE_MEMCPY_ARRAY_TO_BUFFER_IMPL(jniHandle, dstAddress, dstOffset, srcAddress, srcOffset, srcType, srcGetElements, srcReleaseElements, byteLength)\
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uint64_t dstBuffer = (uint64_t)(*jniHandle)->GetDirectBufferAddress(jniHandle, dstAddress);\
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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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uint64_t srcArray = (uint64_t)(*jniHandle)->GetPrimitiveArrayCritical(jniHandle, srcAddress, NULL);\
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if(!srcArray) {\
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unsafeThrowOutOfMemory(jniHandle);\
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return;\
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}\
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UNSAFE_MEMCPY_IMPL(dstBuffer + dstOffset, srcArray + srcOffset, byteLength);\
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(*jniHandle)->ReleasePrimitiveArrayCritical(jniHandle, srcAddress, (void*)srcArray, JNI_ABORT);
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#define UNSAFE_MEMCPY_NATIVE_TO_ARRAY_IMPL(jniHandle, dstAddress, dstOffset, dstType, dstGetElements, dstReleaseElements, srcAddress, byteLength)\
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uint64_t dstArray = (uint64_t)(*jniHandle)->GetPrimitiveArrayCritical(jniHandle, dstAddress, 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_MEMCPY_IMPL(dstArray + dstOffset, srcAddress, byteLength);\
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(*jniHandle)->ReleasePrimitiveArrayCritical(jniHandle, dstAddress, (void*)dstArray, JNI_COMMIT);
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#define UNSAFE_MEMCPY_BUFFER_TO_ARRAY_IMPL(jniHandle, dstAddress, dstOffset, dstType, dstGetElements, dstReleaseElements, srcAddress, srcOffset, byteLength)\
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uint64_t srcBuffer = (uint64_t)(*jniHandle)->GetDirectBufferAddress(jniHandle, srcAddress);\
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if(!srcBuffer) {\
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unsafeThrowNotDirectBuffer(jniHandle);\
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return;\
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}\
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uint64_t dstArray = (uint64_t)(*jniHandle)->GetPrimitiveArrayCritical(jniHandle, dstAddress, 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_MEMCPY_IMPL(dstArray + dstOffset, srcBuffer + srcOffset, byteLength);\
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(*jniHandle)->ReleasePrimitiveArrayCritical(jniHandle, dstAddress, (void*)dstArray, JNI_COMMIT);
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#define UNSAFE_MEMCPY_ARRAY_TO_ARRAY_IMPL(jniHandle, dstAddress, dstOffset, dstType, dstGetElements, dstReleaseElements, srcAddress, srcOffset, srcType, srcGetElements, srcReleaseElements, byteLength)\
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uint64_t srcArray = (uint64_t)(*jniHandle)->GetPrimitiveArrayCritical(jniHandle, srcAddress, NULL);\
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if(!srcArray) {\
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unsafeThrowOutOfMemory(jniHandle);\
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return;\
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}\
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uint64_t dstArray = (uint64_t)(*jniHandle)->GetPrimitiveArrayCritical(jniHandle, dstAddress, NULL);\
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if(!dstArray) {\
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(*jniHandle)->ReleasePrimitiveArrayCritical(jniHandle, srcAddress, (void*)srcArray, JNI_ABORT);\
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unsafeThrowOutOfMemory(jniHandle);\
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return;\
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}\
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UNSAFE_MEMCPY_IMPL(dstArray + dstOffset, srcArray + srcOffset, byteLength);\
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(*jniHandle)->ReleasePrimitiveArrayCritical(jniHandle, dstAddress, (void*)dstArray, JNI_COMMIT);\
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(*jniHandle)->ReleasePrimitiveArrayCritical(jniHandle, srcAddress, (void*)srcArray, JNI_ABORT);
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// =============== ALIGNED SRC VERSIONS ===============
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#define UNSAFE_MEMCPY_ARRAY_ALIGN_TO_NATIVE_IMPL(jniHandle, dstAddress, srcAddress, srcOffset, srcType, srcGetElements, srcReleaseElements, length, srcGetRegionFunction)\
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(*jniHandle)->srcGetRegionFunction(jniHandle, srcAddress, srcOffset, length, (srcType*)dstAddress);
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#define UNSAFE_MEMCPY_ARRAY_ALIGN_TO_BUFFER_IMPL(jniHandle, dstAddress, dstOffset, srcAddress, srcOffset, srcType, srcGetElements, srcReleaseElements, length, srcGetRegionFunction)\
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uint64_t dstBuffer = (uint64_t)(*jniHandle)->GetDirectBufferAddress(jniHandle, dstAddress);\
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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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(*jniHandle)->srcGetRegionFunction(jniHandle, srcAddress, srcOffset, length, (srcType*)(dstBuffer + dstOffset));
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#define UNSAFE_MEMCPY_ARRAY_ALIGN_TO_ARRAY_IMPL(jniHandle, dstAddress, dstOffset, dstType, dstGetElements, dstReleaseElements, srcAddress, srcOffset, srcType, srcGetElements, srcReleaseElements, length, srcGetRegionFunction)\
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uint64_t dstArray = (uint64_t)(*jniHandle)->dstGetElements(jniHandle, dstAddress, 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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(*jniHandle)->srcGetRegionFunction(jniHandle, srcAddress, srcOffset, length, (srcType*)(dstArray + dstOffset));\
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(*jniHandle)->dstReleaseElements(jniHandle, dstAddress, (dstType*)dstArray, JNI_COMMIT);\
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// =============== ALIGNED DST VERSIONS ===============
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#define UNSAFE_MEMCPY_NATIVE_TO_ARRAY_ALIGN_IMPL(jniHandle, dstAddress, dstOffset, dstType, dstGetElements, dstReleaseElements, srcAddress, length, dstSetRegionFunction)\
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(*jniHandle)->dstSetRegionFunction(jniHandle, dstAddress, dstOffset, length, (const dstType*)srcAddress);
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#define UNSAFE_MEMCPY_BUFFER_TO_ARRAY_ALIGN_IMPL(jniHandle, dstAddress, dstOffset, dstType, dstGetElements, dstReleaseElements, srcAddress, srcOffset, length, dstSetRegionFunction)\
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uint64_t srcBuffer = (uint64_t)(*jniHandle)->GetDirectBufferAddress(jniHandle, srcAddress);\
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if(!srcBuffer) {\
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unsafeThrowNotDirectBuffer(jniHandle);\
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return;\
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}\
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(*jniHandle)->dstSetRegionFunction(jniHandle, dstAddress, dstOffset, length, (const dstType*)(srcBuffer + srcOffset));
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#define UNSAFE_MEMCPY_ARRAY_TO_ARRAY_ALIGN_IMPL(jniHandle, dstAddress, dstOffset, dstType, dstGetElements, dstReleaseElements, srcAddress, srcOffset, srcType, srcGetElements, srcReleaseElements, length, dstSetRegionFunction)\
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uint64_t srcArray = (uint64_t)(*jniHandle)->srcGetElements(jniHandle, srcAddress, NULL);\
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if(!srcArray) {\
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unsafeThrowOutOfMemory(jniHandle);\
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return;\
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}\
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(*jniHandle)->dstSetRegionFunction(jniHandle, dstAddress, dstOffset, length, (const dstType*)(srcArray + srcOffset));\
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(*jniHandle)->srcReleaseElements(jniHandle, srcAddress, (void*)srcArray, JNI_ABORT);
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// =============== FULLY ALIGNED VERSIONS ===============
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#define UNSAFE_MEMCPY_ARRAY_ALIGN_TO_ARRAY_ALIGN_IMPL(jniHandle, dstAddress, dstOffset, dstType, dstGetElements, dstReleaseElements, srcAddress, srcOffset, srcType, srcGetElements, srcReleaseElements, length, srcGetRegionFunction, dstSetRegionFunction)\
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UNSAFE_MEMCPY_ARRAY_TO_ARRAY_ALIGN_IMPL(jniHandle, dstAddress, dstOffset, dstType, dstGetElements, dstReleaseElements, srcAddress, (srcOffset * (jsize)sizeof(srcType)), srcType, srcGetElements, srcReleaseElements, length, dstSetRegionFunction)
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